Entries |
Document | Title | Date |
20080223065 | AIR CONDITIONING SYSTEM AND CONTROL METHOD THEREOF - An air conditioning system including an outdoor heat-exchanging unit, at least one indoor heat-exchanging unit, a gaseous refrigerant line connected between the outdoor heat-exchanging unit and the indoor heat-exchanging unit, to allow a refrigerant in a gaseous state to flow between the outdoor heat-exchanging unit and the indoor heat-exchanging unit, and a pressure compensation device for increasing a pressure of the gaseous refrigerant flowing through the gaseous refrigerant line. The pressure compensation device is located along the gaseous refrigerant line at a position closer to the indoor heat-exchanging unit than to the outdoor heat-exchanging unit. A pressure compensation device for use in an air conditioning system is also provided. | 09-18-2008 |
20080236184 | Injectible two-staged rotary compressor and heat pump system - In an injectable two-staged rotary compressor, a second suction pipe includes a heat-exchange promoting unit that promotes heat exchange between intermediary-pressure injected refrigerant and internal space or an external surface of a sealed container. The heat being exchanged by the intermediary-pressure injected refrigerant absorbing heat. | 10-02-2008 |
20080307820 | Air-Conditioning - An air supply system ( | 12-18-2008 |
20080314064 | AIR CONDITIONING SYSTEM - An air conditioning and heating system includes an condenser, an expansion valve, an evaporator and a compressor interconnected in a closed loop system, and a motor for driving the compressor. The system also includes a refrigerant disposed within the closed loop system. The compressor compresses the refrigerant and pumps the refrigerant through the system. The system also includes one or more feedback loops to reduce the temperature (pre-cool) the refrigerant before it reaches the expansion valve in the cooling mode and the same or a different heat exchanger in the heating mode. The additional heat exchangers are placed in the loop to reduce the electric energy being used. | 12-25-2008 |
20090000327 | Heat Pump - Heat pump comprising a number of hollow elements ( | 01-01-2009 |
20090025416 | Controlling cooling fluid flow in a cooling system with a variable orifice - In a cooling system, a variable orifice controls the flow of cooling fluid through a cooling fluid flow path. The variable orifice includes an adjustable diaphragm shutter through which the cooling fluid flows. Upon manipulation of the adjustable diaphragm shutter, a diameter of an opening of the adjustable diaphragm shutter is adjusted to control the flow of the cooling fluid. | 01-29-2009 |
20090049857 | HEAT PUMP SYSTEM HAVING AUXILIARY WATER HEATING AND HEAT EXCHANGER BYPASS - A heat pump system ( | 02-26-2009 |
20090071183 | CAPACITY MODULATED COMPRESSOR - A heat pump system may include first and second heat exchangers, a compressor, and a fluid conduit. The compressor may include a capacity modulation system providing first, second, and third capacities of the compressor. The second capacity may be less than the first capacity and greater than the third capacity. The fluid conduit may provide fluid communication between the first and second heat exchangers and the compressor. The fluid conduit may define a first flow path from the compressor to the first heat exchanger and from the first heat exchanger to the second heat exchanger during a cooling mode and a second flow path from the compressor to the second heat exchanger and from the second heat exchanger to the first heat exchanger during a heating mode. The compressor may operate at the first capacity during the heating mode and at the second capacity during the cooling mode. | 03-19-2009 |
20090241581 | EXPANDER AND HEAT PUMP USING THE EXPANDER - An expander of the present invention includes a plurality of suction ports for guiding a working fluid to a working chamber, and the plurality of suction ports includes a first suction port ( | 10-01-2009 |
20090277207 | High Speed Defrosting Heat Pump - Disclosed is a high speed defrosting heat pump having a closed refrigerant circulation loop including a four-way valve so as to conduct cooling and heating operations by switching a refrigerant-circulating direction by means of the four-way valve. A three-way valve is disposed on a refrigerant pipe connected between a compressor and the four-way valve, and a bypass pipe is branched off from the three-way valve in such a manner as to be connected to a refrigerant pipe connected between an expansion valve and a exterior heat exchanger, such that the hot gas discharged from the compressor is introduced to the exterior heat exchanger via the bypass tube by the control of the three-way valve. | 11-12-2009 |
20100050679 | Air conditioning system - An air conditioner includes: a compressor configured to compress refrigerant; an indoor heat exchanger configured to condense the refrigerant compressed by the compressor; an outdoor heat exchanger configured to evaporate the refrigerant condensed by indoor heat exchanger; a heater configured to transfer heat to the refrigerant condensed by the indoor heat exchanger; a first pipe configured to flow fluid towards the heater; a second pipe configured to flow fluid away from the heater; and a bypass pipe configured to flow fluid between the first pipe and the second pipe. | 03-04-2010 |
20100077788 | CASCADING AIR-SOURCE HEAT PUMP - An improved air-source heat pump for residential and commercial use, employing two closed refrigerant systems having different refrigerants in cascade relationship to each other to address efficiency and space concerns, with the first closed refrigerant system partitionable into a first sub-system and a second sub-system, with the first sub-system working in conjunction with the second closed refrigerant system in heating mode and the second sub-system working independently in cooling mode. | 04-01-2010 |
20100095701 | Heat pump with pressure reducer - A heat pump HVAC system with an integrated pressure reducer which reduces the head pressure of the system when operating in the cooling mode and thus reduces compressor workload. The heat pump HVAC system includes a compressor for compressing a refrigerant, an exterior coil positioned outside of a building, an interior coil positioned within the building, and a reversing valve for changing the flow direction of refrigerant in the refrigerant circuit. A heat exchanger is provided between the outlet of the exterior coil and the thermal expansion valve. The heat exchanger cools the refrigerant flowing between the outlet of the exterior coil and thermal expansion valve using refrigerant exiting the interior coil. | 04-22-2010 |
20100101256 | AIR CONDITIONER - Out of switching mechanisms ( | 04-29-2010 |
20100147005 | METHOD AND APPARATUS FOR COOLANT CONTROL WITHIN REFRIGERATORS - A method for cooling an icemaker is disclosed. The icemaker includes an ice mold body having a channel for transport of coolant and a plurality of ice cavities. The method includes the steps of injecting a coolant into the channel, adding water to the ice cavities, forming ice cubes in the ice cavities, removing coolant from the channel, heating the ice mold body, and ejecting the ice cubes from the ice mold body. The removal step is performed by reversing direction of a coolant pump. | 06-17-2010 |
20100251742 | HVAC&R SYSTEM VALVING - An HVAC&R system is disclosed that utilizes energy-efficient valving. The valving controls the flow of refrigerant and may be adapted for evaporator or condenser applications, on both AC systems and heat pumps (as well as chillers and other refrigeration systems). The valving may provide simultaneous and individualized control of flow through individual coils or groups of coils for improved control of evaporation, condensation, defrosting and so forth. In some configurations a common sensor may be shared between individual coils or groups of coils and may provide sensed parameters to control circuitry for controlling the valving. Other configurations may include bypass valving to direct fluid around the flow control valving. In yet other configurations, a valve may be used to bypass tapped vapor around a heat exchanger functioning as an evaporator. | 10-07-2010 |
20100263397 | Motor-operated valve and refrigeration cycle using the same - A motor-operated valve which can control the flow rate at a high accuracy during a normal flow, and can pass the fluid so as to suppress pressure loss as much as possible during a reverse flow, and a refrigeration cycle using the same are provided. It is configured such that during a normal flow, the fluid is made to flow only from between the main valve body | 10-21-2010 |
20100275634 | REFRIGERATION APPARATUS - A refrigerant circuit ( | 11-04-2010 |
20100281907 | HEAT PUMP DEVICE - A device for heating and cooling, respectively, includes a heat pump ( | 11-11-2010 |
20100287969 | REFRIGERATOR - A refrigerator is provided in which a refrigerant supplied to an evaporator is precooled to a dryness of nearly zero and is supplied in a single liquid phase to increase the amount of heat exchanged by the evaporator, thereby improving cooling performance or reducing the size of the evaporator. A refrigerator ( | 11-18-2010 |
20100293982 | HEATING AND AIR-CONDITIONING INSTALLATION WITH A HEAT PUMP, THE INSTALLATION INCLUDING AT LEAST ONE HEAT TRANSFER FLUID DISTRIBUTOR UNIT WITH COUPLING TO A PLURALITY OF HEAT COLLECTION AND DELIVERY CIRCUITS - The distributor unit ( | 11-25-2010 |
20110000246 | REFRIGERATION APPARATUS - A refrigeration apparatus includes a compression mechanism, a heat source-side heat exchanger, a usage-side heat exchanger, an intercooler, an intercooler bypass tube and an intake return tube. The compression mechanism has a plurality of compression elements configured so that refrigerant discharged from a first-stage compression element is sequentially compressed by a second-stage compression element. The intercooler is connected to an intermediate refrigerant tube configured to draw refrigerant discharged from the first-stage compression element into the second-stage compression element to cool the refrigerant discharged from the first-stage compression element and drawn into the second-stage compression element. The intercooler bypass tube is connected to the intermediate refrigerant tube so as to bypass the intercooler. The intake return tube is configured to connect the intercooler and an intake side of the compression mechanism when the refrigerant discharged from the first-stage compression element is drawn into the second-stage compression element through the intercooler bypass tube. | 01-06-2011 |
20110030408 | ROTATING VALVE AND HEAT PUMP - A rotating valve is provided that includes an inlet region having a plurality of stationary separate inlets for several flows of a fluid and an outlet region having an in particular identical plurality of stationary separate outlets for the flows of the fluid, wherein between the inlet region and the outlet region a switching region having a switching member that can be rotated about an axis is provided, wherein in a first position of the switching member the plurality of inlets are connected to the plurality of outlets in a first association, and wherein in a second position of the switching member the plurality of inlets are connected to the plurality of outlets in a second association, wherein the switching member comprises a plurality of openings through which the fluid flows flow axially in the direction of the rotation axis and which are moved together with the switching member, the openings alternately covering a plurality of stationary, axially directed openings in the course of the rotation of the switching member, wherein the different associations of the inlets with the outlets are carried out by the alternating covering of the axially directed openings. | 02-10-2011 |
20110030409 | REFRIGERATION APPARATUS - A refrigeration apparatus uses supercritical range refrigerant, and includes a multi-stage compression mechanism, a heat source-side heat exchanger, a usage-side heat exchanger, a switching mechanism switchable between cooling and heating operation states, an intermediate heat exchanger integrated with the heat source-side heat exchanger, and an intermediate heat exchanger bypass tube connected to the intermediate refrigerant tube so as to bypass the intermediate heat exchanger. The intermediate heat exchanger is connected to an intermediate refrigerant tube to draw refrigerant discharged from the first-stage compression element into the second-stage compression element, and functions as a cooler of the refrigerant discharged from the first-stage compression element and drawn into the second-stage compression element. The intermediate heat exchanger bypass tube ensures that refrigerant does not flow to the intermediate heat exchanger when a reverse cycle defrosting operation is performed. | 02-10-2011 |
20110048053 | AIR CONDITIONER - A triple-pipeline type first outdoor unit | 03-03-2011 |
20110048054 | AIR CONDITIONER - A triple-pipeline type first outdoor unit | 03-03-2011 |
20110048055 | REFRIGERATION APPARATUS - A refrigeration apparatus includes a multi-stage compression mechanism, heat source-side and usage side heat exchangers each operable as a radiator/evaporator, a switching mechanism switchable between cooling and heating operation states, a second-stage injection tube, an intermediate heat exchanger and an intermediate heat exchanger bypass tube. The intermediate heat exchanger bypass tube ensures that refrigerant discharged from the first-stage compression element and drawn into the second-stage compression element is not cooled by the intermediate heat exchanger during a heating operation. Injection rate optimization controls a flow rate of refrigerant returned to the second-stage compression element through the second-stage injection tube so that an injection ratio is greater during the heating operation than during a cooling operation. The injection ratio is a ratio of flow rate of the refrigerant returned to the second-stage compression element through the second-stage injection tube relative to flow rate of the refrigerant discharged from the compression mechanism. | 03-03-2011 |
20110067427 | Air Conditioning Device For Heating, Ventilation and/or Air Conditioning Installation - The invention is related to an AC loop ( | 03-24-2011 |
20110113809 | HEATING AND COOLING SYSTEM - A heating and cooling system, which includes a refrigerant circulation circuit, first and second targets, first and second refrigerant circuits, a first switching section, and a control device, is disclosed. The first switching section is selectively switched between a first position at which a refrigerant discharged from a discharge area of a compressor is permitted to flow to the first target and a second position at which the refrigerant is not permitted to flow to the first target. The control device switches the first switching section to the first position so that the refrigerant circulation circuit functions as a first refrigerant circuit, thereby heating the first target and cooling the second target. The control device switches the first switching section to the second position so that the refrigerant circulation circuit functions as a second refrigerant circuit, thereby cooling only the second target. | 05-19-2011 |
20110120168 | COMBINED REFRIGERATING/FREEZING AND AIR CONDITIONING SYSTEM - A combined refrigerating/freezing and air conditioning system is provided. The system may include an air conditioning circuit, a refrigerating circuit, a freezing circuit, a first heat exchanger, and a second heat exchanger. The air conditioning circuit may include a compressor, an outdoor heat exchanger, and an indoor heat exchanger. The refrigerating circuit may include compressor, a condenser, and an evaporator. The freezing circuit may include a compressor, a condenser, and an evaporator. The refrigerant of the air conditioning circuit may be heat-exchanged with the refrigerant of the refrigerating circuit in the first heat exchanger, and the refrigerant of the refrigerating circuit may be heat-exchanged with the refrigerant of the freezing circuit in the second heat exchanger to improve air conditioning efficiency and refrigerating/freezing efficiency of the system. | 05-26-2011 |
20110146321 | HEAT PUMP SYSTEM - A heat pump system includes a base refrigeration circuit, a heat accumulator, an auxiliary heat exchanger and an outdoor heat exchanger defrosting and cooling means. In the base refrigeration circuit, a compressor, a four-way valve, an indoor heat exchanger, a cooling expansion valve, a heating expansion valve, an outdoor heat exchanger and the four-way valve are connected in a sequence by a refrigerant conduit. The four-way valve and the compressor are connected by a refrigerant suction conduit. The heat accumulator includes a bypass refrigerant conduit connected to the refrigerant conduit between the cooling and heating expansion valves. The heat accumulator has a heating heat exchanger and is injected with a heat medium. The auxiliary heat exchanger is installed in the outdoor heat exchanger and connected to the heat accumulator by a heat medium supply conduit and a heat medium return conduit. The defrosting and cooling means includes a heat exchanger and a costless heat reservoir. | 06-23-2011 |
20110154847 | Air conditioner - In an air conditioner having a double-pipe heat exchanger in a refrigerating cycle, the degree of opening of a bypass expansion valve is controlled easily without liquid return to a compressor and without considering the state of a low-pressure two-phase refrigerant in the double-pipe heat exchanger. In the air conditioner including a refrigerating cycle | 06-30-2011 |
20110154848 | HEAT PUMP-TYPE COOLING/HEATING SYSTEM - A heat pump-type cooling/heating system of the present invention includes a refrigeration circuit, a hot water generating means and an indoor heat exchanger assisting means. In the refrigeration circuit, a compressor, a four-way valve, an indoor heat exchanger, a cooling expansion valve, a heating expansion valve, an outdoor heat exchanger and the four-way valve are connected in a sequence by a refrigerant conduit. The four-way valve and the compressor are connected by a suction conduit. The hot water generating means includes a bypass conduit and a double tube-type heat exchanger. The double tube-type heat exchanger has a condensation tube which is provided in a storage reservoir, and a heat medium heating conduit inserted into the condensation tube. The indoor heat exchanger assisting means includes an auxiliary heat exchanger which is located beside the indoor heat exchanger and connected to the heat medium heating conduit by a supply conduit provided and by a return conduit. | 06-30-2011 |
20110154849 | SYMMETRIC REFRIGERANT REGULATOR FOR FLOODED MULTICHANNEL EVAPORATOR - A regulator of refrigerant for a refrigeration circuit with flooded evaporator. The refrigerant can be distributed to many separate evaporator channels. The flow of refrigerant can be changed so that the evaporator and condenser change functions. This provides the opportunity for a fast defrosting of the evaporator or the evaporator can alternately be applied for cooling and heating. The regulator functions independently of the gravitational field and therefore it can be applied for air-conditioning systems in aeroplane and space crafts. The regulator is without movable parts. It has two throttling steps, e.g. two capillary tubes separated by a suction-gas heat exchanger. It requires neither adjustment nor maintenance and therefore it can be placed at inaccessible places or it can be embedded completely in insulation foam. | 06-30-2011 |
20110203304 | HEAT PUMP UNIT AND RECIPROCATING COMPRESSOR FOR REFRIGERANT - To prevent the decline in the volumetric efficiency and the decline in the performance of the heat pump having the reciprocating compressor integrated therein by decreasing the temperature of discharge gas in the reciprocating compressor with a simple construction, a heat pump unit | 08-25-2011 |
20110226001 | CHANNEL SWITCHING VALVE AND HEAT PUMP SYSTEM USING THE SAME - A rotary type channel switching valve for use in a heat pump system is provided. The channel switching valve provides a plurality of channel switching means required when switching connection of a plurality of devices to parallel/series connection, e.g., in a system including the plurality of devices including inlet/outlet ports for a fluid. The channel-switching valve can play a role of a plurality of channel switching means which are required when connecting a plurality of heat exchangers in parallel when a refrigerant is passed in a normal direction, and when connecting a plurality of heat exchangers in series when the refrigerant is passed in a reverse direction, for example, in a heat pump including the plurality of heat exchangers, and thereby, can realize simplification of a configuration of the heat pump, reduction in an occupied space, cost and energy consumption, or the like. | 09-22-2011 |
20110232319 | AIR CONDITIONING SYSTEM WITH VARIABLE CONDENSER REHEAT AND REFRIGERANT FLOW SEQUENCER - A vapor-compression air conditioning system comprising a blower positioned in a return air flow path from a conditioned space, a reheat heat exchanger positioned in the return air flow path and downstream from the blower, a system reversing valve fluidly coupled to the reheat heat exchanger, and a refrigerant flow sequencer interposed the system reversing valve and the reheat heat exchanger. A method of manufacturing an air conditioning system is also provided. | 09-29-2011 |
20110232320 | FLOW REVERSING VALVE AND HEAT PUMP DEVICE USING SAME - A flow reversing valve includes a reversing valve main body adapted to assume a first circulatory state where a first main valve part is in a fully-open state and a second main valve part is in a fully-closed state and a second circulatory state where the first main valve part is in a fully-closed state and the second main valve part is in a fully-open state; and a flow regulating valve adapted to regulate the pressures of the respective back pressure chambers and of the first main valve part and the second main valve part. The flow regulating valve places the reversing valve main body in the first circulatory state by gradually reducing the pressure of the back pressure chamber of the first main valve part, and in the second circulatory state by gradually reducing the pressure of the back pressure chamber of the second main valve part. | 09-29-2011 |
20110247354 | UNDERGROUND HEAT EXCHANGER AND AIR CONDITIONING SYSTEM INCLUDING THE SAME - An outer pipe ( | 10-13-2011 |
20110302947 | HEAT PUMP SYSTEM - A heat pump system includes a refrigerant circuit, an inlet temperature sensor measuring a heat exchanger inlet temperature of an aqueous medium in a usage-side heat exchanger of the refrigerant circuit, an outlet temperature sensor measuring a heat exchanger outlet temperature of the aqueous medium in the usage-side heat exchanger, a variable-capacity circulating pump circulating the aqueous medium inside a hot-water circuit of a loop, and a controller. The controller controls refrigerant-side circulation rate in the refrigerant circuit to bring a temperature of the aqueous medium at the outlet of the usage-side heat exchanger to a targeted first target temperature, and operating capacity of the circulating pump to bring a medium temperature differential of the aqueous medium between the outlet and the inlet of the usage-side heat exchanger to a targeted second target temperature differential. | 12-15-2011 |
20110302948 | HEAT PUMP SYSTEM - A heat pump system includes a heat source unit, a first usage unit, and a second usage unit. The heat source unit has a heat-source-side compressor, a heat-source-side heat exchanger, a heat-source-side blower, and a heat-source-side switching mechanism. The first usage unit has at least a radiation amount adjusting element, and a first usage-side flow rate adjustment valve. The second usage unit has at least a second usage-side flow rate adjustment valve. In a case in which the second usage unit performs an air-cooling operation and the first usage unit performs an aqueous medium heating operation, the amount of radiation adjusted by the radiation amount adjusting element or operating capacity of the heat-source-side blower is controlled in accordance with a state of the first usage-side flow rate adjustment valve and the second usage-side flow rate adjustment valve. | 12-15-2011 |
20110302949 | HEAT PUMP SYSTEM - A heat pump system includes a first usage unit operable to perform a hot-water supply operation to heat an aqueous medium and a second usage unit operable to perform air-cooling and air-warming operations to cool or heat an air medium. The first and second usage units are both connected to a heat source unit in such a manner that the first and second usage units are incapable of individually selecting and performing a hot-water supply operation, an air-cooling operation, or an air-warming operation. The heat pump system is capable of switching operation to a thermoregulation mode different from the switched state of a heat-source-side switching mechanism in response to a thermoregulation mode command issued by a first usage-side controller, a second usage side controller or a centralized controller. | 12-15-2011 |
20120000237 | HEAT PUMP SYSTEM - A heat pump system includes a heat pump circuit, a heat load circuit, first and second heat exchangers, a flow rate adjustment element, and a controller. The heat pump circuit circulates primary refrigerant through a low and high stage-side compression elements, an expansion element and an evaporator. The heat load circuit circulates a first fluid and has a first and second branching portions, first and second branching channels, and a heat-load-processing section. The first and second heat exchangers perform heat exchange between the primary refrigerant and the first fluid. Flow rate of the first fluid in the first and/or second branching channel is adjustable. The controller performs flow rate adjustment control so as to maintain a state in which a predetermined temperature condition is satisfied, or to reduce a difference between the temperature of the first fluid flowing through portions of the first and second branching channels. | 01-05-2012 |
20120111046 | THERMAL MANAGEMENT SYSTEM WITH STAGED COOLING - A thermal management system comprises a first heat exchanger having an inlet and an outlet, a second heat exchanger having an inlet and an outlet, a fluid loop, a first heat pump, and a second heat pump. The fluid loop circulates a fluid, and forms a continuous path between the first and second heat exchangers. The first heat pump is connected to the fluid loop and is disposed between the outlet of the second heat exchanger and the inlet of the first heat exchanger. The second heat pump is connected to the fluid loop and is disposed between the outlet of the first heat exchanger and the inlet of the second heat exchanger. | 05-10-2012 |
20120151955 | Energy-Saving Heat Pump Device - An energy-saving heat pump device includes first, second, third, and fourth pipes connected in sequence in a loop. A condenser is mounted between the first and second pipes. An expansion valve is mounted between the second and third pipes. An evaporator is mounted between the third and fourth pipes. A compressor is mounted between the first and fourth pipes. The compressor compresses and outputs a coolant mixture including at least two coolants. The coolant mixture in the first pipe has a pressure of 24-30 kg/cm | 06-21-2012 |
20120180515 | HEAT MEDIUM RELAY UNIT AND AIR-CONDITIONING APPARATUS - A heat medium relay unit and an air-conditioning apparatus or the like are provided that are compact and have improved serviceability while achieving energy saving. A heat medium relay unit according to the invention includes heat medium delivering devices and heat medium flow switching devices (first heat medium flow switching devices and second heat medium flow switching devices) that are provided so as to be detachable from a predetermined side. | 07-19-2012 |
20120198881 | ROTATING VALVE AND HEAT PUMP - A rotating valve includes an inlet region, an outlet region, and a switching region having a switching member that can be rotated about an axis. In a first position of the switching member the plurality of inlets are connected to the plurality of outlets in a first association, and in a second position of the switching member the plurality of inlets are connected to the plurality of outlets in a second association. The switching member has a plurality of openings through which the fluid flows flow axially in the direction of the rotation axis and are moved together with the switching member. The openings alternately cover a plurality of stationary, axially directed openings in the course of the rotation of the switching member. Different associations of the inlets with the outlets are carried out by the alternating covering of the axially directed openings. | 08-09-2012 |
20120266624 | HEAT PUMP CYCLE - A heat pump cycle includes a compressor having a suction port and a discharge port, a heating heat exchanger which heats air, a gas-liquid separator, and a cooling heat exchanger which cools air upstream of the heating heat exchanger in an air flow direction. The heat pump cycle further includes an intermediate pressure passage which guides gas refrigerant from the gas-liquid separator to the suction port. A variable open-close portion opens the intermediate pressure passage and decompresses the gas refrigerant in the intermediate pressure passage, so that the gas refrigerant is introduced into the suction port when a bypass dehumidifying-heating mode is selected as a dehumidifying-heating mode in which the air having been heated in the heating heat exchanger becomes equal to or higher than air in an air-conditioning target space in temperature. | 10-25-2012 |
20120291472 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus that that is capable of saving energy is provided. An air-conditioning apparatus includes a refrigerant indoor unit that air-conditions a conditioned space by using a heat source side refrigerant supplied from an outdoor unit, and a heat medium indoor unit that air-conditions a conditioned space by using a heat medium different from the heat source side refrigerant. The air-conditioning apparatus includes a first heat medium relay unit that is supplied with the heat source side refrigerant from the outdoor unit, a third heat medium relay unit interposed between the first heat medium relay unit and the refrigerant indoor unit, and a third heat medium relay unit interposed between the first heat medium relay unit and the heat medium indoor unit. | 11-22-2012 |
20120297812 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes refrigerating cycle systems each connecting a compressor for compressing a refrigerant, a refrigerant flow path switching device, a heat source side heat exchanger for exchanging heat for the refrigerant, an expansion device for adjusting the pressure of the refrigerant, and heat exchangers related to heat medium which exchanges heat between the refrigerant and heat medium different from the refrigerant, by piping so as to constitute refrigerant circuits; and heat medium side systems each connecting pumps for circulating the heat medium for the heat exchangers related to heat medium, use side heat exchangers for exchange heat between the heat medium and air of an air-conditioning target space and heat medium flow switching systems for switching the heat medium which passes through each heat exchangers related to heat medium to each use side heat exchanger, by piping so as to constitute a heat medium circulation circuit. | 11-29-2012 |
20120304681 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes a heat medium circuit that circulates a heat medium different to the refrigerant on a heat source side. The heat medium circuit includes, for example, heat exchangers related to heat medium, use side heat exchangers, first heat medium flow switching devices and second heat medium flow switching devices that change passages of the use side heat exchangers, heat medium flow control devices that controls a heat medium amount in the corresponding use side heat exchangers. An on-off device is each provided on the upstream side of the heat medium flow control device and on the downstream side of the second heat medium flow switching device and a first backflow prevention device is each provided on the downstream side of the heat medium flow control device and on the upstream side of the first heat medium flow switching device. | 12-06-2012 |
20130055749 | AIR CONDITIONER - Provided is an air conditioner. The air conditioner includes a compressor, a condenser, an expansion device, an evaporator, and a supercooling device configured to supercool a refrigerant passing through the condenser. The supercooling device includes a supercooling main body in which the refrigerant passing through the condenser and a refrigerant to be injected into the compressor are introduced, a first passage disposed within the supercooling main body so that the refrigerant passing through the condenser flows in one direction, a second passage disposed on a side of the first passage so that the refrigerant passing through the condenser flows in the other direction, and a third passage in which the refrigerant to be injected into the compressor flows, the third passage being heat-exchanged with at least one of the first and second passages. | 03-07-2013 |
20130098096 | HEAT PUMP SYSTEM - A heat pump system includes a heat pump circuit, a heat load circuit, first and second heat exchangers, a flow rate regulation mechanism and a controller. A first passage connects branching and converging portions of the heat load circuit. A second passage connects the branching and converging portions without converging with the first passage. The first and second heat exchanger perform heat exchange between discharge refrigerant from the low and high stage compression mechanisms and fluid in the first and second passages, respectively. The flow rate regulation mechanism regulates a ratio between flow rates through the first and second passages. The controller controls the flow rate regulation mechanism so that the fluid is allowed to flow to the first heat exchanger when a temperature of refrigerant flowing into the first heat exchanger is lower than a heating target temperature of converged fluid flowing through the heat load circuit. | 04-25-2013 |
20130139539 | AIR-CONDITIONING APPARATUS - In an air-conditioning apparatus, an expansion device, a second refrigerant flow switching device, and heat exchangers related to heat medium, connected between the expansion device and the second refrigerant flow switching device such that a heat source side refrigerant flows in parallel, are connected in a part of refrigerant passages, and an expansion device, a second refrigerant flow switching device, and heat exchangers related to heat medium, connected between the expansion device and the second refrigerant flow switching device such that the heat source side refrigerant flows in series, are connected in the rest of the refrigerant passages. | 06-06-2013 |
20130186126 | AIR-CONDITIONING APPARATUS - [Object] To reduce pressure loss of refrigerant while suppressing a cost increase. | 07-25-2013 |
20130205824 | HEAT PUMP DEVICE - A heat pump device heats a second heat medium to a high temperature with high efficiency by using a secondary-loop refrigeration cycle while achieving a cooling operation and a heating operation simultaneously in a state where reliability and efficiency are ensured. | 08-15-2013 |
20130213077 | MULTI-SPLIT AIR CONDITIONER CAPABLE OF REFRIGERATING AND HEATING SIMULTANEOUSLY - Disclosed is a multi-split air conditioner capable of refrigerating and heating simultaneously. A heating circuit consists of a compressor ( | 08-22-2013 |
20130213078 | AIR-CONDITIONING APPARATUS - Obtained is an air-conditioning apparatus capable of having a thin low-pressure gas pipe even when a refrigerant with a low refrigerant density at low pressure is used. An air-conditioning apparatus includes a refrigerant circuit connecting a compressor, a heat source side heat exchanger, expansion devices, and use side heat exchangers with pipes and circulating a refrigerant whose density in a saturated refrigerant gas at 0 degrees C. is 35 to 65% of the density of an R410A refrigerant, and supercooling means (supercooling heat exchanger, expansion device, and bypass) making a liquid temperature sent from the heat source side heat exchanger to the expansion devices be 5 degrees C. or less in a cooling operation. | 08-22-2013 |
20130213079 | AIR-CONDITIONING SYSTEM AND HUMIDITY CONTROL DEVICE - An air-conditioning system includes at least one outdoor unit including a compressor, a four-way valve, and an outdoor heat exchanger, at least one indoor unit including an indoor unit expansion valve and an indoor unit heat exchanger, and at least one humidity control device including a humidity control device expansion valve, a humidity control device heat exchanger, and first and second water adsorption/desorption devices. The compressor, the four-way valve, the outdoor heat exchanger, the indoor unit expansion valve, the indoor unit heat exchanger, the humidity control device expansion valve, and the humidity control device heat exchanger are connected to each other with pipes so as to constitute a refrigerant circuit. | 08-22-2013 |
20130219943 | OUTDOOR HEAT EXCHANGER AND AIR CONDITIONER COMPRISING THE SAME - The present invention relates to an outdoor heat exchanger and air conditioner in which the passage of a refrigerant is varied in an air cooling operation and an air heating operation. An outdoor heat exchanger according to an embodiment of the present invention includes a first header pipe configured to have a refrigerant, compressed by a compressor, to flow therein in the air cooling operation, a first heat exchange unit coupled to the first header pipe and configured to thermally exchange the refrigerant with air, a bypass pipe configured to have the refrigerant, thermally exchanged in the first heat exchange unit, to flow therein in the air cooling operation, a first distribution pipe coupled to the bypass pipe, a second header pipe configured to have the refrigerant, passing through the bypass pipe, to flow therein in the air cooling operation, a second heat exchange unit coupled to the second header pipe and configured to thermally exchange the refrigerant with air, a second distribution pipe configured to have the refrigerant, thermally exchanged in the second heat exchange unit, to flow therein in the air cooling operation, a second hot gas pipe configured to couple the compressor and the second distribution pipe, and a second hot gas control valve disposed in the second hot gas pipe to control a flow of the refrigerant. | 08-29-2013 |
20130219944 | HEAT EXCHANGER - A heat exchanger included in an air conditioner includes a first header pipe to have a refrigerant, compressed by a compressor, to flow therein and a first heat exchange unit coupled to the first header pipe to receive the refrigerant flowing in the first header, a second header pipe to have the refrigerant to flow therein and a second heat exchange unit coupled to the second header pipe to receive the refrigerant flowing in the second header pipe in the air cooling operation. A bypass pipe couples the first heat exchange unit with the second header pipe and a bypass valve controls a flow of the refrigerant through the bypass pipe. A controller controls the bypass valve such that the refrigerant is allowed to flow from the first heat exchange unit to the second header pipe in the air cooling operation. | 08-29-2013 |
20130219945 | COMBINED HOT WATER SUPPLY AND AIR-CONDITIONING DEVICE - A combined hot water supply and air-conditioning device supplies heat source even in a case where the outside air temperature is high such as in summertime. | 08-29-2013 |
20130283843 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus uses R32, a refrigerant mixture containing R32 and HFO1234yf in which R32 has a mass percentage of 40% or higher, or a refrigerant mixture containing R32 and HFO1234ze in which R32 has a mass percentage of 15% or higher, as a heat-source refrigerant. The air-conditioning apparatus includes a low-pressure shell-structure compressor, a first flow switching valve, a heat-source-side heat exchanger, first flow control devices, and plural use-side heat exchangers connected by refrigerant pipes, forming a refrigeration cycle. The compressor includes a compression chamber within a sealed container including an opening extending between inside and outside of the sealed container. The air-conditioning apparatus can perform only a heating at the use-side heat exchangers, only a cooling at the use-side heat exchangers, and a mixed cooling and heating in a mixed fashion at the use-side heat exchangers. | 10-31-2013 |
20130305764 | AIR-CONDITIONING APPARATUS - In an air-conditioning apparatus equipped with an outdoor unit having outdoor devices including a compressor that compresses a refrigerant, a flow switching valve that switches the flowing direction of the refrigerant, an outdoor heat exchanger that exchanges heat between the refrigerant and outdoor air, a first expansion valve that reduces the pressure of the refrigerant, an excess-refrigerant container that retains an excess refrigerant of the refrigerant, and a second expansion valve that reduces the pressure of the refrigerant; and an indoor unit having an indoor heat exchanger that exchanges heat between the refrigerant and indoor air, the air-conditioning apparatus includes an outdoor-heat-exchanger refrigerant injection port provided in a refrigerant pipe that is directly connected to the outdoor heat exchanger, and an excess-refrigerant-container refrigerant injection port provided in a refrigerant pipe that is directly connected to the excess-refrigerant container. | 11-21-2013 |
20130312447 | HEAT PUMP CYCLE - A heat pump cycle is capable of switching an operation mode to a cooling operation mode, a heating operation mode and a dehumidifying-heating operation mode, and is applicable to an air conditioning device. The heat pump cycle is configured to set both of a high-pressure side pressure reducing device and a low-pressure side pressure reducing deviceāin a throttled state and a fully open state. In this way, the heat pump cycle realizes cooling, heating, and dehumidifying-heating by a simple structure without providing separate refrigerant flow passages extended from a compressor to an outside heat exchanger based on the operation modes of the air conditioning device. | 11-28-2013 |
20140007607 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus in which a primary-side refrigerant in a two-phase gas-liquid state that has flowed into each of intermediate heat exchangers absorbs heat from a secondary-side refrigerant flowing in counterflow to the primary-side refrigerant, and evaporates and turns into a low-temperature, low-pressure gas state. The air-conditioning apparatus ensures high heat exchange efficiency even when a direction of a heat source-side refrigerant (secondary-side refrigerant) flowing through an intermediate heat exchanger changes, and enables an appropriate operation in any operation mode. | 01-09-2014 |
20140013788 | HEAT-PUMP CHILLER WITH IMPROVED HEAT RECOVERY FEATURES - A heating and cooling system includes an evaporator, a compressor, and a condenser. A heat exchanger, which may be an outdoor heat exchanger, is configured to receive the refrigerant from the condenser, to selectively extract heat from or to add heat to the refrigerant, and to transfer the refrigerant to the evaporator. First control valving, disposed between the condenser and the heat exchanger, is configured to regulate flow of the refrigerant from the condenser to the heat exchanger in a first mode of operation. Second control valving, disposed between the condenser and the heat exchanger, is configured to regulate flow of the refrigerant from the heat exchanger to the evaporator in a second mode of operation. The system may be operated in a variety of modes by appropriate control of the valving and other system components. | 01-16-2014 |
20140083126 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus is capable of suppressing refrigerant flow noise regardless the refrigerant state of an inlet of an expansion mechanism. In parallel to a flow control valve, an opening and closing valve that opens and closes a refrigerant passage and an expansion mechanism having porous bodies capable of passing a refrigerant therethrough are connected in series with each other. In a heating mode, in the case where a controller stops an operation of one or more of a plurality of indoor units and causes the other indoor unit(s) to operate, the flow control valve of the stopped indoor unit is fully closed and the opening and closing valve of the stopped indoor unit is opened. | 03-27-2014 |
20140090412 | MOTOR-DRIVEN COMPRESSOR AND AIR CONDITONER - A motor-driven compressor includes a housing assembly, a compression mechanism, an electric motor, a discharge port, an outlet, a discharge passage, discharge valve and a valve device. The compression mechanism is accommodated in the housing assembly. The electric motor drives the compression mechanism. The discharge chamber is formed in the housing assembly. The discharge port is formed in the housing assembly for communication between the discharge chamber and the compression mechanism. The outlet is formed in the housing assembly for communication with an external circuit. The discharge passage is formed in the housing assembly for communication between the discharge chamber and the outlet. The discharge valve is disposed in the discharge chamber for opening and closing the discharge port. The valve device is configured to adjust an opening of the discharge passage. | 04-03-2014 |
20140096557 | REFRIGERATION CYCLE DEVICE AND AIR-CONDITIONING APPARATUS - A refrigeration cycle device selectively performs a heating operation and a cooling operation. The refrigeration cycle device includes: a compressor that suctions a refrigerant and compresses the refrigerant; a first heat exchanger, a second heat exchanger, a third heat exchanger, and a fourth heat exchanger each of which exchanges heat with the refrigerant; an ejector that includes a refrigerant inlet port, a refrigerant suction port, and a refrigerant outlet port; a controller that is connected between the first heat exchanger and the second heat exchanger and configured to control a flow rate of the refrigerant; and a switching device configured to perform switching of a flow path of the refrigerant in both the heating and cooling operations. | 04-10-2014 |
20140109611 | HEAT PUMP APPARATUS - It is an object to prevent a liquid refrigerant from being drawn into a compressor. A heat pump apparatus includes a refrigerant circuit in which a refrigerant circulates, and which is configured by sequentially connecting a compressor, a first heat exchanger, an expansion valve, a second heat exchanger, and a third heat exchanger, and connecting a bypass flow path bypassing the third heat exchanger between the second heat exchanger and the compressor. The heat pump apparatus also includes a water circuit in which water circulates, and which is configured by sequentially connecting the third heat exchanger, the first heat exchanger, and a tank. In the heat pump apparatus, if there is a risk of the liquid refrigerant being drawn into the compressor, a three-way valve is controlled such that the refrigerant flows through the third heat exchanger to be heated by water and evaporated. | 04-24-2014 |
20140116082 | HEAT EXCHANGE APPARATUS - A heat exchange apparatus that performs heat exchange between a refrigerant and a temperature-adjusted unit includes: a compressor that circulates the refrigerant; a heat exchanger that performs heat exchange between the refrigerant and outside air; an expansion valve that reduces a pressure of the refrigerant; a heat exchanger that performs heat exchange between the refrigerant and air-conditioning air; a cooling passage that forms a path for the refrigerant to flow between the heat exchanger and the expansion valve; and a heating passage that forms a path for the refrigerant to flow between the expansion valve and the heat exchanger. The temperature-adjusted unit is disposed to be capable of exchanging heat with the refrigerant flowing through the cooling passage and to be capable of exchanging heat with the refrigerant flowing through the heating passage. | 05-01-2014 |
20140137592 | OUTDOOR HEAT EXCHANGER, AND AIR CONDITIONING DEVICE FOR VEHICLE - A corrugated fin ( | 05-22-2014 |
20140144174 | BIDIRECTIONAL FILTER AND HEAT PUMP SYSTEM - A bidirectional filter and a heat pump system. The bidirectional filter comprises a housing and at least two control value components. The two control value components divide the inner chamber of the housing into a filter chamber and two transitional chambers. The control value component comprises a frame body fixed on an inner wall of the housing, and an outlet blocking piece fitting an outlet of the frame body. The outlet blocking piece is on an outer side of the frame body. The bidirectional filter further comprises a protective member located in the filter chamber and fixed relative to the housing. The protective member is provided with a protective surface opposite to an outer side surface of the outlet blocking piece. When the pressure of a refrigerant in the pipeline is too high, the protective surface of the protective member can limit movement of the outlet blocking piece. | 05-29-2014 |
20140202194 | Heat Exchange and Heat Pump System Using the Same - A heat exchanger includes a main core portion ( | 07-24-2014 |
20140208791 | HEATING MEDIUM UTILIZING APPARATUS - In a heating medium utilizing apparatus utilizing heating medium heated by a heating device, it is aimed to provide a pipe which achieves both of the strength of a connection part to an external pipe and the ease of pipe layout without increasing a manufacturing time. On a tip portion of an internal pipe through which the heating medium or fluid to be heat-exchanged with the heating medium flows, a pipe expanding process to expand a pipe diameter and a pipe shrinking process to shrink the pipe diameter are carried out, thereby forming the connection part to be connected to the external pipe connected to external equipment by work hardening. | 07-31-2014 |
20140238066 | System Including High-Side and Low-Side Compressors - A heat pump system may be operable to circulate fluid between first and second heat exchangers in a first direction in a heating mode and in a second direction in a cooling mode. The heat pump system may include a suction conduit, a low-side compressor and a high-side compressor. The low-side and high-side compressors may both be in fluid communication with the suction conduit. | 08-28-2014 |
20140238067 | INTEGRATION VALVE AND HEAT PUMP CYCLE - In an integration valve, a body, in which a vapor-liquid separating space is provided, includes a fixed throttle decompressing liquid-phase refrigerant, a liquid-phase refrigerant side valve body member opening or closing a liquid-phase refrigerant passage, and a vapor-phase refrigerant side valve body member opening or closing a vapor-phase refrigerant passage. Further, the vapor-phase refrigerant side valve body member is configured by a differential pressure regulating valve operated based on a pressure difference between a refrigerant pressure at a side of the vapor-phase refrigerant passage and a refrigerant pressure at a side of the liquid-phase refrigerant passage. The vapor-phase refrigerant side valve body member is movable when the liquid-phase refrigerant side valve body member is moved by a solenoid. Therefore, a cycle configuration of a heat pump cycle configuring a gas injection cycle can be simplified. | 08-28-2014 |
20140245773 | ROTARY ACTUATOR AND VALVE - Various systems, methods and apparatuses for a rotary valve are disclosed. A rotary valve apparatus may have a case, a fluid conducting apparatus inside the case, and an electromagnetic actuator. The electromagnetic actuator may align the fluid conducting apparatus with various ports in the case. In this manner, fluid may be conducted through the ports. The electromagnetic actuator may rotate the fluid conducting apparatus to align with different ports in the case. Thus, the apparatus may operate as a valve, connecting and disconnecting various ports in response to the electromagnetic actuator. | 09-04-2014 |
20140283541 | BUILDING BUILT-IN AIR CONDITIONING SYSTEM - A building built-in air conditioning system comprising: an external heat exchanger ( | 09-25-2014 |
20140290298 | REFRIGERATION CYCLE APPARATUS - A refrigeration cycle apparatus includes a refrigerant circuit of a refrigeration cycle through which a refrigerant that transits in a supercritical state is allowed to flow, and a flow dividing device that divides the flow of a high-pressure liquid refrigerant in a subcritical state into two or more parts. The flow dividing device is configured such that the device is oriented substantially in the horizontal direction or upward in the vertical direction relative to the direction of flow of the refrigerant in a liquid state. With such a configuration, the flow of refrigerating machine oil is equally divided, thus offering high energy saving while keeping heat-medium conveyance power at a low level without reducing the heat exchanging performance. | 10-02-2014 |
20140290299 | VEHICLE AIR-CONDITIONING DEVICE - A vehicle air-conditioning device is provided that makes it possible to avoid the occurrence of condensation at a heat exchanger, and to avoid decreases in the heat exchange efficiency of the heat exchanger caused by uneven temperature distribution in the heat exchanger itself. This vehicle air-conditioning device employs a configuration comprising: a heat exchanger that performs heat exchange between air passing through a first flow path and air flowing through a second flow path; and a switching means that alternately switches either the first flow path or the second flow path from a discharge path that discharges the air inside the vehicle toward the outside of the vehicle to an intake path that guides air from outside of the vehicle into the vehicle, and switches the other flow path from the intake path to the discharge path. | 10-02-2014 |
20140305154 | CHANNEL SWITCHING VALVE AND VEHICLE AIR CONDITIONING DEVICE PROVIDED WITH CHANNEL SWITCHING VALVE - The invention is provided with: a housing having a refrigerant inlet and plurality of refrigerant outlets, through which a refrigerant flows in or out; and a valve body having refrigerant channels which are movably accommodated in the housing and can be selectively switched between communicating with the refrigerant inlet and with each of the refrigerant outlets; the refrigerant channels being partially constituted of an orifice and able to be selectively switched between a route passing through the orifice and a route not passing therethrough. | 10-16-2014 |
20140311177 | REFRIGERATION APPARATUS - A refrigeration apparatus includes a multistage compression mechanism, switching mechanisms, intercoolers, oil separators, and a control unit. The multistage compression mechanism has one high-stage-side compression mechanism and a plurality of low-stage-side compression mechanisms connected in series. The switching mechanisms are connected to blow-out pipes of the low-stage-side compression mechanisms. The switching mechanisms switch between cooling and heating operation cycles. The intercoolers cool refrigerant blown out from the low-stage-side compression mechanisms during the cooling cycle. The oil separators are disposed between the switching mechanisms and the intercoolers. The oil separators separate lubricating oil from refrigerant blown out from the low-stage-side compression mechanisms during the cooling cycle. The control unit controls the multi-stage compression mechanism and the switching mechanisms. Refrigerant from the low-stage-side compression mechanisms passes through the oil separators and intercoolers during the cooling cycle, not during the heating cycle. | 10-23-2014 |
20140318171 | HIGH PERFORMANCE HEAT PUMP UNIT - A heat pump unit ( | 10-30-2014 |
20140360218 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes an outdoor-side flow rate control device (a fourth flow rate control device) that generates an intermediate pressure for injection into a compressor, and a bypass flow rate control device (a sixth flow rate control device) that is placed at a bypass pipe allowing bypassing of an outdoor heat exchanger in parallel to the outdoor-side flow rate control device and that controls the amount of heat exchange of the outdoor heat exchanger together with the outdoor-side flow rate control device. | 12-11-2014 |
20150047384 | HEAT PUMP SYSTEM WITH A FLOW DIRECTING SYSTEM - A heat pump system is provided that includes a flow directing system that allows an outdoor heat exchanger to be switchable between a single-pass arrangement and a two-pass arrangement. The heat pump system includes an outdoor heat exchanger, an indoor heat exchanger, and a flow directing system of check valves and piping segments that enable switching of the outdoor heat exchanger between the single-pass and the two-pass arrangement. The outdoor heat exchanger is operable as a two-pass condenser in the cooling mode and as a single-pass evaporator in the heating mode. | 02-19-2015 |
20150047385 | PARTITIONED EVAPORATOR FOR A REVERSIBLE HEAT PUMP SYSTEM OPERATING IN THE HEATING MODE - Disclosed are embodiments of a partitioned evaporator for a reversible heat pump system operating in the heating mode. Embodiments include a partitioned evaporator having a first part and a second part, the first part exchanging heat between a working fluid upstream from a reversible metering device, and the working fluid downstream from the reversible metering device. Heat energy from the upstream fluid is recovered and introduced into the first and second parts aiding in the evaporation of the working fluid rather than being rejected and unused. | 02-19-2015 |
20150059392 | Multi-Type Air Conditioner System - The disclosure discloses a multi-type air conditioner system including: an outdoor machine, a refrigerant pipe connected with an output end of the outdoor machine, a manifold connected with an input end of the refrigerant pipe, an indoor machine connected with an output end of the refrigerant pipe, and a controller connected respectively with the outdoor machine and the indoor machine through a shielded signal line, wherein the multi-type air conditioner system may further include: a pipe set including a composite pipe, a third cutoff valve, a third filter, a third electronic expanding valve, a fourth cutoff valve and a pipe control board. With the disclosure, heating can be provided by precisely controlling indoor temperature and effectively lower power consumption. | 03-05-2015 |
20150068241 | Outdoor Unit of Air-Conditioner, Two-Pipe Air-Conditioning System and Three-Pipe Air-Conditioning System Having The Same - An outdoor unit of an air-conditioner and two-pipe and three-pipe air-conditioning systems having the same are provided. The outdoor unit includes a compressor defining an outlet and an inlet; a first four-way valve defining a first valve communicated with the outlet, second and third ports communicated with the inlet; a second four-way valve defining second and third ports communicated with the inlet; an outdoor heat exchanger defining a first refrigerant valve Communicated with the fourth port of the first four-way valve; a first gas pipe defining a first end connected with the second and third ports of the first and second four-way valves and, the inlet; a second gas pipe defining a first end connected with the fourth port of the second four-way valve; a third gas pipe defining a first end connected with the outlet and a second end connected with the first port of the second four-way valve. | 03-12-2015 |
20150075204 | VEHICULAR AIR-CONDITIONING SYSTEM WITH A SWITCHING HEAT EXCHANGER - An air-conditioning system for a vehicle includes a switching heat exchanger. The switching heat exchanger includes a heat exchanger core, a receiver tank, and a switch valve. The switch valve may be arranged between the heat exchanger core and the receiver tank to control the flow of refrigerant. A controller can be configured to control the switch valve in an access position during a cooling mode and a bypass position during a heating mode. In the access position, the heat exchanger core is in communication with the receiver tank such that the refrigerant flows from a primary region of the heat exchanger core to the receiver tank. In the bypass position, the heat exchanger core is in communication with its outlet such that the refrigerant from the primary region flows out from the switching heat exchanger. | 03-19-2015 |
20150075205 | COMPRESSOR CRANKCASE HEATING CONTROL SYSTEMS AND METHODS - A first switching device includes a first and second inputs connected to first and second power lines, respectively, the first and second power lines for receiving a first voltage. The first switching device selectively connects and disconnects the first and second inputs to and from first and second nodes, respectively. A second switching device includes a third input connected to the first node, includes a fourth input connected to a third power line, and includes a first output connected to a first end of a stator winding. A third switching device includes a fifth input connected to the second node and includes a sixth input connected to a fourth power line, the third and fourth power lines for receiving a second voltage that is less than the first voltage. The third switching device further includes a second output connected to a second end of the stator winding. A compressor crankcase heating control module controls the second and third switching devices to control compressor crankcase heating. | 03-19-2015 |
20150075206 | ENGINE DRIVEN HEAT PUMP - Regarding an engine driven heat pump in which an engine, a compressor, a refrigerant circuit, and a generator are stored in a main body package, an engine actuation battery to actuate the engine, a battery charging circuit to charge the engine actuation battery, and an inverter to convert output power from the generator into a predetermined voltage and a predetermined frequency are stored in a separate body package, which is a separate body with respect to the main body package, and a front surface and a back surface of the separate body package is made up of an area in such a manner as to fit in a side surface of the main body package, and the separate body package is provided on a side surface near to the generator, out of side surfaces of the main body package and supported by the main body package. | 03-19-2015 |
20150107289 | HIGH PRESSURE RATIO MULTI-STAGE CENTRIFUGAL COMPRESSOR - A heat pump system includes a refrigerant circuit. First and second heat exchangers are arranged in the refrigerant circuit. A flow reversing device selectively changes a direction of flow in the refrigerant circuit between the first and second heat exchangers. A centrifugal compressor is arranged in the fluid circuit and has first and second impellers arranged in series relative to one another to provide a desired compressor pressure ratio. In one example, the centrifugal compressor mounts the first and second impellers on opposing ends of a shaft. The first and second impellers respectively include first and second stage inlets and outlets. One example desired compressor pressure ratio of at least 10:1 corresponds to a second stage outlet pressure to a first stage inlet pressure. A first diffuser is arranged at the first stage outlet, and the first diffuser is a variable geometry diffuser. | 04-23-2015 |
20150107290 | AIR-CONDITIONING APPARATUS - In the case of a heating operation in which a use side heat exchanger functions as a condenser when the outside air has a predetermined low temperature, a low-outside-air-temperature heating operation start mode is executed in which, while a refrigerant, as discharged from a compressor, flows into the use side heat exchanger, the refrigerant is supplied to the injection port of the compressor via an injection pipe and a part of a refrigerant that is accumulated in an accumulator is supplied to the compressor via a connecting pipe, and thereafter a low-outside-air-temperature heating operation mode is executed in which the refrigerant, as discharged from the compressor, is supplied to the injection port of the compressor via the injection pipe while flowing into the use side heat exchanger. | 04-23-2015 |
20150121939 | REFRIGERATION CYCLE DEVICE - When a refrigerant flow-path switch performs switching to a first refrigerant flow path, an interior condenser heating air blown into an interior as a first temperature-adjustment subject and an auxiliary heat exchanger are connected in parallel, and the auxiliary heat exchanger heats air blown to a battery as a second temperature-adjustment subject. In contrast, when the refrigerant flow-path switch performs switching to a second refrigerant flow path, an interior evaporator cooling air blown into the interior and the auxiliary heat exchanger are connected in parallel, and the auxiliary heat exchanger cools the air blown to the battery. With this arrangement, one common auxiliary heat exchanger can cool or heat the air for the battery, thereby leading to reduction in size of an entire refrigeration cycle device. | 05-07-2015 |
20150128632 | VEHICULAR THERMO-CONTROL DEVICE - A vehicular thermo-control device adjusts a temperature of a battery. The device has a primary system through which cooling water circulates, and a secondary system through which a refrigerant circulates. The primary system has a heat exchanger which performs heat exchange between the battery and the cooling water, and a heat exchanger which performs heat exchange between the cooling water and an ambient air. The secondary system is a refrigerating cycle. Both heat exchangers on a high temperature side and a low temperature side of the refrigerating cycle are thermally coupled with the primary system. Only one heat exchanger provides heat exchange with the ambient air. The pump of the primary system can switch circulating direction of the cooling water. A controller controls devices to perform cooling and heating operation. | 05-14-2015 |
20150135756 | MULTI-ROOM AIR-CONDITIONING APPARATUS - A multi-room air-conditioning apparatus includes an outdoor unit, a relay unit connected to an outdoor unit by first and second connection pipes, and a plurality of indoor units connected to the relay unit. The outdoor unit includes a second gas-liquid separating device provided on the suction side of the compressor. The suction side of the compressor and the second gas-liquid separating device are connected to each other by a gas-side outlet pipe and a liquid-side outlet pipe. | 05-21-2015 |
20150300706 | REFRIGERATION CYCLE APPARATUS - In a dehumidification-air heating mode, a refrigerant circuit is configured such that a refrigerant outlet side of an exterior heat exchanger communicates with a heating side refrigerant suction port of a heating side ejector as a refrigerant decompression means, and that a refrigerant inlet side of an interior evaporator communicates with an outlet side of a heating side diffuser of the heating side ejector. A refrigerant evaporation temperature in the exterior heat exchanger is set lower than that of the interior evaporator by a pressurizing effect of the heating side ejector. Thus, the amount of heat absorption by the refrigerant at the exterior heat exchanger is increased to improve the heating capacity of the air in an interior condenser. | 10-22-2015 |
20150338139 | HEAT PUMP WITH WATER HEATING - Heat pump systems and methods for providing chilled/hot liquid for air-conditioning and domestic hot-water, are provided. The heat pump systems include a first heat exchanger, a second heat exchanger and a third heat exchanger (e.g., a hot-water heat exchanger) that share at least one expansion valve disposed at a downstream position of the hot-water heat exchanger. The at least one expansion valve is disposed between the hot-water heat exchanger and the first and second heat exchangers. The heat pump systems can provide six operation modes, including a cooling mode, a heating mode, a water-heating mode, a heat-recovery mode, a simultaneous heating and water heating mode, and a defrost mode. | 11-26-2015 |
20150377389 | USE OF SEMI-AROMATIC COPOLYAMIDE FOR TRANSPORTING REFRIGERANT FLUID - The invention relates to the use of a layer consisting of a composition comprising a copolyamide of formula X/10.T/Y for transporting a heat transfer fluid in a vapor compression circuit, wherein: X represents either the residues of an aliphatic amino acid comprising between 8 and 18 carbon atoms, or a lactam, or the unit X | 12-31-2015 |
20160009161 | HEAT PUMP APPARATUS FOR VEHICLE | 01-14-2016 |
20160033179 | AIR CONDITIONER - An air conditioner includes a compressor, a flow switching part, an outdoor heat exchanger including a plurality of refrigerant tubes for guiding the refrigerant heat exchanged with outdoor air, a main expansion valve disposed at one side of the outdoor heat exchanger, a first inlet/outlet tube extending from the flow switching part to the outdoor heat exchanger, and a second inlet/outlet tube extending from the outdoor heat exchanger to the main expansion valve. The outdoor heat exchanger includes a header defining a flow space for the refrigerant, the header including an upper header and a lower header, a check valve disposed between the upper header and the lower header to guide the refrigerant to flow in one direction, and a bypass tube extending from the lower header to the second inlet/outlet tube to guide a discharge of a liquid refrigerant existing in the lower header. | 02-04-2016 |
20160069594 | RE-COOLING TYPE AIR CONDITIONING APPARATUS - The present invention is comprised of a heat supply circulation circuit: the liquid refrigerant from the refrigerant tank, after being boosted by the cryogenic liquid pump, enters the condensing evaporator, to transfer the cold to the backflow refrigerant at a higher temperature, after increasing pressure and temperature via the compressor, it is sent to the user system to supply heat, the refrigerant gas from the user system enters the condensing evaporator, and returns via the throttle valve to the refrigerant tank; and a cold supply circulation circuit: the liquid refrigerant from the refrigerant tank, after boosting by the cryogenic liquid pump, enters the condensing evaporator, to transfer the cold to the backflow refrigerant in the cold recovery channel, the refrigerant, after releasing the cold energy with increased temperature, flows to the user system to supply cold, the refrigerant gas from the user system returns via the compressor, condensing evaporator, and throttle valve to the refrigerant tank. | 03-10-2016 |
20160084546 | HEAT PUMP APPARATUS - A heat pump apparatus, including: a two-cylinder compressor including: an electric motor; two compression units to be driven by the electric motor, the two-cylinder compressor being structured to switch between two operation modes including single operation in which one of the compression units is brought into a non-compression state, and parallel operation in which both the compression units are brought into a compression state; an inverter drive control device supplying drive power to the electric motor of the two-cylinder compressor; an operation mode detecting-determining unit determining a current operation mode based on an electric signal acquired from the inverter drive control device; and a capacity control device determining a rotating frequency of the electric motor so that a temperature of a target object is brought close to a set value, to thereby control the inverter drive control device based on a result of determination of the operation mode detecting-determining unit. | 03-24-2016 |
20160097569 | HEAT PUMP APPARATUS - To obtain long-term reliability of a heat pump apparatus by using an insulating material that is less liable to be hydrolyzed even when a refrigerating machine oil having high hygroscopicity and a high water content in oil is used, an electric motor of a compressor includes: a stator fixed to a sealed container with a winding being wound around the stator through intermediation of an insulating material; and a rotator surrounded by the stator. The insulating material includes wholly aromatic liquid crystal polyester (LCP) containing, as an essential component, p-hydroxybenzoic acid (PHB) as a monomer and having a main chain of a molecule formed by linking p-hydroxybenzoic acid and, as another monomer, only a monomer having a benzene ring, through an ester bond. A saturated water amount of the refrigerating machine oil is 1% or less at 40 degrees Celsius and a relative humidity of 80%. | 04-07-2016 |
20160097573 | DAMPER VALVE AND A HEAT PUMP WATER HEATER APPLIANCE - The present subject matter provides a damper valve. The damper valve includes an outer sleeve and an inner sleeve. The inner sleeve is positioned within the outer sleeve and is pivotable between a first position and a second position within the outer sleeve. Radial openings of the inner sleeve align with radial openings of the outer sleeve when the inner sleeve is in the first position, and axial openings of the inner sleeve align with axial openings of the outer sleeve when the inner sleeve is in the second position. A related heat pump water heater appliance is also provided. | 04-07-2016 |
20160109160 | PACKAGED TERMINAL AIR CONDITIONER UNIT - A packaged terminal air conditioner unit includes a phase separator positioned within a casing of the packaged terminal air conditioner unit. The phase separator is coupled to a supply conduit that extends between an exterior coil and an interior coil of the packaged terminal air conditioner unit. The phase separator is configured for separating liquid refrigerant within the supply conduit from vapor refrigerant within the supply conduit. | 04-21-2016 |
20160131402 | HEAT PUMP - A heat pipe provided with an outdoor unit having a compressor and an outdoor heat exchanger, a plurality of indoor units provided to be driven at a cooling mode or a heating mode. an indoor unit mode control unit to control the each of the plurality of indoor units to be driven at a cooling mode or a heating mode. and a flow path conversion apparatus connected to a first refrigerant pipe and a second refrigerant pipe connected from the outdoor unit, connected to a high pressure gas pipe and a low pressure gas pipe connected to the indoor unit mode controlling unit, and configured to change the flow path of a refrigerant by selectively connect all or some of the first refrigerant pipe, the second refrigerant pipe, the high pressure gas pipe, and the low pressure gas pipe according to the mode at which the indoor units are driven. | 05-12-2016 |
20160146523 | HEAT PUMP DEVICE, AND AIR CONDITIONER, HEAT PUMP WATER HEATER, REFRIGERATOR, AND FREEZING MACHINE INCLUDING HEAT PUMP DEVICE - A heat pump device capable of efficiently and reliably preventing a liquid refrigerant from stagnating in a compressor an air conditioner, a heat pump water heater, a refrigerator, and a freezing machine including the heat pump device. The configuration is such that, when the compressor is under operation standby, a high-frequency voltage synchronizing with a carrier signal is supplied to the compressor motor to carry out the locked energization of the compressor motor. From respective inter-phase voltages, respective phase voltages, or respective phase currents of the compressor motor for a plurality of high-frequency energization cycles, the detection values for one high-frequency energization cycle are restored. A power value calculated using the restored detection values for one high-frequency energization cycle is controlled to coincide with a heating power command necessary for discharging the liquid refrigerant stagnated in the compressor to the outside of the compressor. | 05-26-2016 |
20160153685 | AUTONOMOUS INDUCTION HEAT EXCHANGE METHOD USING PRESSURE DIFFERENCE AND GAS COMPRESSOR AND HEAT PUMP USING THE SAME | 06-02-2016 |
20160161158 | Multi-Cycle Power Generator - This invention relates to a multi-cycle power generator. More specifically, the invention relates to a power generator having a heat pump cycle and at least a hot power gener-ating cycle, the cycles being configured relative to one another to transfer heat there between two or more times in a single cycle thereby to recover energy through the reuse of unused heat energy that is typically discarded in conventional ther-modynamic cycles. The multi-cycle power gener-ator includes a heat pump cycle and a hot power cycle, wherein at least a pair of heat exchangers of the hot power cycle are common with a pair of heat exchangers of the heat pump cycle. The multi-cycle power generator may further include a cool power generating cycle In combination with the heat pump and hot power generating cycles. | 06-09-2016 |
20160187032 | STEAM INJECTOR AND HEAT PUMP DEVICE - A steam injector including an introducing portion introducing a liquid flow of a refrigerant and a steam flow of the refrigerant; a mixing portion that has a shape with an internal cross-sectional area decreasing toward a moving direction of the liquid flow, and internally mixes the jet-like liquid flow with the steam flow to form a refrigerant flow; a throat portion formed on an outlet side of the mixing portion; and a diffuser portion that has a shape with an internal cross-sectional area increasing from the throat portion toward a moving direction of the refrigerant flow, and discharges the refrigerant flow at an increased pressure from a discharge portion. The throat portion has an internal cross-sectional area smaller than a critical cross-sectional area at which a discharge pressure of the refrigerant flow discharged from the discharge portion nonlinearly increases when the internal cross-sectional area of the throat portion is reduced. | 06-30-2016 |
20160377332 | REFRIGERANT CHANNEL SWITCHING UNIT - A refrigerant channel switching unit is disposed between a heat source unit and a utilization unit to switch flow of refrigerant in the refrigerant circuit. The refrigerant channel switching unit includes a first refrigerant pipe connected to a suction gas communicating pipe extending from the heat source unit, a second refrigerant pipe connected to a high-low pressure gas communicating pipe extending from the heat source unit, a third refrigerant pipe connected to a gas pipe extending to the utilization unit, a coupling portion, a first switch valve mounted to the first refrigerant pipe, and a second switch valve mounted to the second refrigerant pipe. The coupling portion is connected to the first, second and third refrigerant pipes. The first second and third are coupled through the coupling portion. | 12-29-2016 |
20190145675 | HEAT PUMP SYSTEM FOR VEHICLE | 05-16-2019 |
20220136741 | REFRIGERATION CYCLE APPARATUS - In a refrigeration cycle apparatus according to the present disclosure, the circulation direction of refrigerant is switched between a first circulation direction and a second circulation direction opposite to the first circulation direction. The first circulation direction is a circulation direction in order of a compressor, a first heat exchanger, a first expansion valve, a third heat exchanger, a fourth heat exchanger, a second expansion valve, and a second heat exchanger. When a circulation direction of the refrigerant is the first circulation direction, the refrigerant from the third heat exchanger exchanges heat with the refrigerant from the second heat exchanger in the fourth heat exchanger. When a circulation direction of the refrigerant is the second circulation direction, the refrigerant from the fourth heat exchanger exchanges heat with the refrigerant from the first heat exchanger in the third heat exchanger. | 05-05-2022 |