| Patent application number | Description | Published |
|---|
| 20090280191 | PREVENTIVE REMEDIAL THERAPEUTIC AGENT FOR PHOSPHORUS IMPAIRMENT, ORAL AGENT FOR ADSORBING PHOSPHATE ION CONTAINED IN FOOD, BEVERAGE AND CHEMICAL, AND PROCESS FOR PRODUCING THEM - The present invention provides agents for preventing, improving or treating phosphorus-related disorders and oral preparations; agents high in biosafety and phosphorus adsorptive power, which contain, as an active ingredient, ferric hydroxide as produced under such conditions that a ferrous species is present. | 11-12-2009 |
| 20100000243 | REFRIGERATION AIR CONDITIONING SYSTEM - To obtain a refrigeration air conditioning system having a dehumidifying function by means of a moisture adsorption means, allowing the moisture adsorption means to be regenerated by use of discharged condensation heat or other discharged heat of a low temperature range in the refrigeration cycle, and exerting stable cooling performance even at a dry-bulb temperature of 0° C. or less. | 01-07-2010 |
| 20100107681 | HEAT EXCHANGER AND REFRIGERATION CYCLE APPARATUS - Heat exchangers | 05-06-2010 |
| 20100170273 | REFRIGERATING AND AIR CONDITIONING APPARATUS - In a range of a wind velocity of 0.5 to 3.5 (m/s) in a refrigeration cycle, when combining absorbent having a small dependency on the wind velocity and the refrigeration cycle, it is not possible to vary dehumidification capability by changing the wind velocity and matching with an actual load is poor. In a refrigerating and air conditioning apparatus having a refrigerator | 07-08-2010 |
| 20100245133 | KEY SHEET - An object of the present invention is to provide a satisfactorily operable key sheet having a structure which entirely has rigidity and shape stability but which is capable of increasing the degree of freedom in the selection of a material, thickness or the like. The key sheet according to the present invention is a key sheet having a plurality of keys, including a metal plate, and a key top portion secured to the surface of the metal plate so as to cover a large part of the metal plate, and the key top portion has a sheet-like base portion and the plurality of keys each formed in a protruding shape on the surface of this sheet-like base portion. | 09-30-2010 |
| 20100282455 | HEAT EXCHANGER AND MANUFACTURING METHOD OF THE SAME - A heat exchanger is used which has heat transfer tubes acting as flow paths of a refrigerant and metal fins having pores opened inward from the surfaces thereof for adsorbing and desorbing moisture in air within the range of a relative pressure of 0.1 to 0.9 so as to transfer heat of the heat transfer tubes to air, wherein the pores have a diameter of 1 to 20 nm and a depth of 1 to 100 μm. | 11-11-2010 |
| 20110088421 | AIR CONDITIONING APPARATUS - A heat source-side refrigerant circuit A including a compressor | 04-21-2011 |
| 20110100042 | REFRIGERATING CYCLE DEVICE AND AIR CONDITIONER - A compressor for compressing a refrigerant containing a substance having a double bond, a condenser for condensing the refrigerant by heat exchange, expanding means for decompressing the condensed refrigerant, and an evaporator for evaporating the decompressed refrigerant by heat exchange are connected by piping so as to configure a refrigerant circuit through which the refrigerant is circulated, and control means is provided for controlling an operation of the refrigerant circuit so that a pressure of the refrigerant in the refrigerant circuit becomes less than a critical pressure of the substance having the double bond. | 05-05-2011 |
| 20110113802 | AIR CONDITIONER - A multi-chamber air conditioner including a heat-source side refrigerant circuit in which a compressor, an outdoor heat exchanger, a first heat exchanger, a refrigerant flow-rate controller, and a second heat exchanger are connected in series, a first use-side refrigerant circuit in which the first heat exchanger and an indoor heat exchanger are connected in series, and a second use-side refrigerant circuit in which the second heat exchanger and the indoor heat exchanger are connected in series, and a heat-source side refrigerant circulating in the heat-source side refrigerant circuit and a use-side refrigerant circulating in the use-side refrigerant circuit are heat-exchanged in the first heat exchanger. The heat-source side refrigerant circulating in the heat-source side refrigerant circuit and the use-side refrigerant circulating in the use-side refrigerant circuit are heat-exchanged in the second heat exchanger. | 05-19-2011 |
| 20110146339 | AIR-CONDITIONING APPARATUS - In an air-conditioning apparatus, a heat source side heat exchanger, intermediate heat exchangers, and use side heat exchangers are formed in separate bodies respectively and adapted to be disposed at separate locations one another. In a heat medium circulation circuit where the intermediate heat exchanger and the use side heat exchanger are connected, temperature sensors are installed. An anti-freezing operation mode is provided in which, when the detection temperatures of the temperature sensors become equal to or lower than a set temperature Ts while a compressor or pumps are stopped, the heat medium is circulated to perform anti-freezing of the heat medium. | 06-23-2011 |
| 20110185754 | AIR-CONDITIONING APPARATUS - To provide an air-conditioning apparatus that is safer and has small conveying power for such as water at the indoor unit side can be made small. It is characterized in that a compressor | 08-04-2011 |
| 20110185756 | AIR-CONDITIONING APPARATUS - In an air-conditioning apparatus, a heat source side heat exchanger | 08-04-2011 |
| 20110192184 | AIR-CONDITIONING APPARATUS AND RELAY UNIT - To obtain an air-conditioner apparatus that can achieve energy-saving without making refrigerant circulate up to an indoor unit and whose construction work is easy. A refrigeration cycle is configured by connecting a compressor, a four-way valve, a heat source side heat exchanger, expansion valves, and intermediate heat exchangers by piping. A heat medium circulation circuit is configured by connecting intermediate heat exchangers, pumps, and use side heat exchangers by piping. The outdoor unit that is installed in a space such as outdoors of the building and accommodates the compressor, the four-way valve, and the heat source side heat exchanger, and the relay unit that is installed in a non-subject space which is different from an indoor space and is on a installation floor separated by two or more floors and accommodates the expansion valves, the pump, and intermediate heat exchangers are connected by two pipelines. The relay unit and an indoor unit that accommodates use side heat exchangers and is installed at a position where an indoor space can be air-conditioned are connected by two pipelines from outside of the wall which is a partition between inside and outside of the room. | 08-11-2011 |
| 20110197608 | AIR-CONDITIONING APPARATUS - A refrigeration cycle is configured by connecting a compressor that compresses the refrigerant, a four-way valve that switches the circulation path of the refrigerant, a heat source side heat exchanger that exchanges heat, expansion valves that adjust the pressure of the refrigerant, and two or more intermediate heat exchangers that exchange heat between the refrigerant and the heat medium to heat and cool the heat medium, by piping. A heat medium circulation circuit is configured by connecting two or more intermediate heat exchangers, pumps that pressurize the heat medium, two or more use side heat exchangers that exchange heat between the heat medium and the air in the indoor space, and flow path switching valves that switch paths of the heated heat medium or the cooled heat medium to the use side heat exchangers, by piping. | 08-18-2011 |
| 20110225998 | AIR-CONDITIONING APPARATUS - To obtain an air-conditioning apparatus that does not make a refrigerant circulate up to an indoor unit and further can achieve energy-saving. A refrigeration cycle is configured by connecting a compressor that pressurizes a refrigerant, a four-way valve that switches a circulation path of the refrigerant, a heat source side heat exchanger that performs heat exchange, expansion valves for pressure-adjusting the refrigerant, and a plurality of intermediate heat exchangers that performs heat exchange between the refrigerant and the heat medium to heat and cool the heat medium, with piping. A heat medium circuit is configured by connecting intermediate heat exchangers, pumps that pressurize the heat medium, and a plurality of use side heat exchangers that perform heat exchange between the heat medium and the air in the indoor space, with piping. | 09-22-2011 |
| 20110232308 | AIR CONDITIONER - An air conditioner that can perform defrosting efficiently while heating or the like is continued even if the air conditioner is configured by one outdoor unit is obtained. In an air conditioner in which an outdoor unit having a compressor that pressurizes and discharges a refrigerant, a plurality of outdoor heat exchangers that exchange heat between outside air and the refrigerant, and a four-way valve that switches a channel on the basis of an operation form and a plurality of indoor units, each having an indoor heat exchanger that exchanges heat between the air in a space to be air-conditioned and the refrigerant and an indoor throttle device are connected by a pipeline so as to configure a refrigerant circuit, a bypass pipeline that divides the refrigerant discharged from the compressor so as to allow the refrigerant to flow into each of the outdoor heat exchangers connected in parallel by a pipeline, a plurality of outdoor third opening/closing valves that pass or shut off the refrigerant from the bypass pipeline to each of the outdoor heat exchangers, and a plurality of outdoor second opening/closing valves that pass or shut off the refrigerant from the indoor unit to each of the outdoor heat exchangers are disposed in the outdoor unit. | 09-29-2011 |
| 20120006050 | AIR-CONDITIONING APPARATUS - Use side heat exchangers, an intermediate heat exchanger that heats a heat medium flowing to the use side heat exchangers, an intermediate heat exchanger that cools the heat medium flowing to the use side heat exchangers, three-way valves that switch between a flow path connecting the intermediate heat exchanger to the use side heat exchangers and a flow path connecting the intermediate heat exchanger to the use side heat exchangers, and three-way valves and bypasses that control the flow rate of the heat medium flowing into the use side heat exchangers are included. When at least one of the use side heat exchangers is switched from a stop state to an operation state or switched to another operation mode, the flow rate of the heat medium flowing into this use side heat exchanger is suppressed, and a change in air output temperature in the use side heat exchangers other than this use side heat exchanger is suppressed. | 01-12-2012 |
| 20120006436 | VALVE BLOCK, VALVE BLOCK UNIT, AND METHOD OF INSPECTING VALVE BLOCK UNIT - Provided are a valve block and a valve block unit which allow simplification and miniaturization of a pipe arrangement. | 01-12-2012 |
| 20120031130 | RELAY UNIT AND AIR CONDITIONING APPARATUS - A relay unit connected to one or a plurality of outdoor units and a plurality of indoor units by different pipeline systems, respectively, so as to exchange heat between a refrigerant circulating through the outdoor unit and a heat medium different from the refrigerant and to circulate the heat medium through the indoor unit, provided with a valve block unit in which a plurality of valve blocks integrated with at least a plurality of branch pipes connected to the indoor unit, a plurality of main pipes which become channels for the heat medium relating to the heat exchange, and heat medium flow direction switching devices that switch the main pipes to communicate with the branch pipes are connected. | 02-09-2012 |
| 20120036887 | AIR-CONDITIONING APPARATUS - A multi-chamber type air-conditioning apparatus is provided in which a refrigerant whose effect on human bodies is a concern is prevented from leaking into a room or the like in which an indoor unit is installed, simultaneous operation of cooling and heating is possible, and performance deterioration by a refrigerant flow control device or drop of the cooling capacity of the indoor unit can be prevented. | 02-16-2012 |
| 20120042674 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus capable of achieving enhancement of the system COP while suppressing product cost. The air-conditioning apparatus controls the difference between the temperatures of brine at a position before and at a position after an indoor heat exchanger or at a position before and at a position after an intermediate heat exchanger to be a preset target value and to be larger at the time of a heating operation than at the time of a cooling operation. | 02-23-2012 |
| 20120043054 | AIR-CONDITIONING APPARATUS - In a first cycle, a first heat exchanger, in which a first medium exchanges heat with the outside air, a second heat exchanger and a third heat exchanger, in which heat is exchanged between the first cycle and a second cycle and between the first cycle and a third cycle, respectively, are connected in series with a first reducing valve and a second reducing valve. In the second cycle and the third cycle that convey cooling energy and heating energy, the flow rates of a second medium in respective branches are adjusted by flow-rate-adjusting valves in accordance with the entrance and exit temperatures of indoor units, and the total flow rate is determined by controlling the rotation speed of a pump by a minimum resistance method. Therefore, even if there are a plurality of loads and the loads change significantly, a stable controlling operation is realized, enabling a highly efficient operation. | 02-23-2012 |
| 20120043056 | AIR CONDITIONING APPARATUS - A first cycle, in which a first medium is circulated, employs a compressor, a first heat exchanger structured with an air heat exchanger, a second heat exchanger, and a third heat exchanger. A second cycle, in which a second medium is circulated and heat is exchanged with the first medium through the second heat exchanger, employs indoor units, each having a fan. A third cycle, in which the second medium is circulated and heat is exchanged with the first medium through the third heat exchanger, shares the indoor units with the second cycle. Flow path switching valves switch flow paths between the second cycle and third cycle. Before the first heat exchanger is defrosted, a halted indoor unit is filled with the second medium in the third cycle with its fan being halted. The third heat exchanger functions as an evaporator during a defrosting operation. | 02-23-2012 |
| 20120100226 | PREVENTIVE REMEDIAL THERAPEUTIC AGENT FOR PHOSPHORUS IMPAIRMENT, ORAL AGENT FOR ADSORBING PHOSPHATE ION CONTAINED IN FOOD, BEVERAGE AND CHEMICAL, AND PROCESS FOR PRODUCING THEM - The present invention provides agents for preventing, improving or treating phosphorus-related disorders and oral preparations; agents high in biosafety and phosphorus adsorptive power, which contain, as an active ingredient, ferric hydroxide as produced under such conditions that a ferrous species is present. | 04-26-2012 |
| 20120118005 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus achieves improvement of safety and further achieves saving of energy without allowing a refrigerant to circulate in or near an indoor unit. The air-conditioning apparatus is configured such that heat medium pipes have a larger inner cross-sectional area per unit capacity than that of refrigerant pipes. | 05-17-2012 |
| 20120118530 | AIR-CONDITIONING APPARATUS - To provide an air-conditioning apparatus which achieves improvement of safety and further achieves saving of energy without circulating a refrigerant in or near an indoor unit. The air-conditioning apparatus includes one expansion device disposed on an outlet side of a heat exchanger related to the heat medium on the heating side. Another expansion device is disposed on an inlet side of a heat exchanger related to the heat medium on the cooling side such that the expansion devices are directly connected through a connecting pipe. | 05-17-2012 |
| 20120131948 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus is provided with a refrigerant cycle through which a heat-source-side refrigerant is to be circulated, a first heat medium channel to which a pump is connected and through which a heat medium such as water, an anti-freezing solution or the like is circulated, a first heat medium channel to which a pump is connected and through which a heat medium is circulated, and a plurality of use-side heat exchangers connected to the first heat medium channels. Also, the first heat medium channels are connected to the suction side of a pump through a pump flow direction switching device, and the first heat medium channels are connected to the discharge side of the pump through a pump flow direction switching device. By controlling opening degrees of the pump flow direction switching devices, the first heat medium channel which communicates with the pump is selected. | 05-31-2012 |
| 20120151949 | AIR CONDITIONING DEVICE - To provide an air-conditioning apparatus capable of achieving energy saving. An air-conditioning apparatus controls first heat medium flow switching devices and second heat medium flow switching devices in a heating only operation mode and a cooling only operation mode such that a flow rate through which a heat medium circulates is formed between all of the heat exchangers related to heat medium and at least one of use side heat exchangers. | 06-21-2012 |
| 20120168139 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes a heat medium side device with plural pumps for circulating the heat medium related to the heating or the cooling of plural intermediate heat exchangers. Plural use side heat exchangers exchange heat between the heat medium and air. Plural flow path switching valves switch the flow path for supplying the heat medium related to a selected system among the heating media circulating in plural systems to each use side heat exchanger. A relay unit side control device controls the flow path switching valves so as to circulate the heat medium between the use side heat exchanger causing the heat medium to absorb the heat and the use side heat exchanger causing the heat medium to emit the preferentially set heat, when it is determined that it is impossible to perform the heating or the cooling of the heat medium by the intermediate heat exchanger. | 07-05-2012 |
| 20120174611 | AIR-CONDITIONING APPARATUS - To provide an air-conditioning apparatus capable of achieving energy saving, a pump control of controlling the operating capacity of a pump is performed such that an opening degree of a heat medium flow control device, controlled by a heat-medium-flow-control-device control, approaches a target opening degree, and a refrigeration cycle of a refrigerant circuit is controlled such that the temperature of a heat medium, whose flow rate is controlled by the heat-medium-flow-control-device control and the pump control, approaches a target temperature. | 07-12-2012 |
| 20120180513 | AIR-CONDITIONING APPARATUS - To provide an air-conditioning apparatus capable of achieving energy saving. | 07-19-2012 |
| 20120198879 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus including an outdoor unit having a compressor compressing a refrigerant and a heat source side heat exchanger exchanging heat between the refrigerant and air; a plurality of indoor units having use side heat exchangers exchanging heat between a heat medium that flows therein and air; and a relay unit disposed between the outdoor unit and the indoor units, the relay unit exchanging heat between the refrigerant conveyed from the outdoor unit and the heat medium flowing in the indoor units, in which the relay unit includes a main relay unit that is connected to the outdoor unit with two pipings and a sub relay unit that is connected to the main relay unit with three pipings. | 08-09-2012 |
| 20120204585 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus capable of achieving energy saving is provided. In the air-conditioning apparatus, even when a switching state of a first refrigerant flow switching device varies, a pressure state of a heat source side refrigerant in a bypass pipe is switched between high and low pressures by second refrigerant flow switching devices and a third refrigerant flow switching device (on-off device). | 08-16-2012 |
| 20120234032 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes a refrigerant circuit having a plurality of expansion devices that controls a flow rate of the refrigerant flowing in each of a plurality of heat exchangers related to heat medium; a heat medium circuit having the heat exchangers related to heat medium and a use side heat exchanger that exchanges heat between the heat medium and air; heat medium flow switching devices disposed on an inflow side and an outflow side of the use side heat exchanger to mix or diverge the heat medium pertaining to the heat exchangers related to heat medium; and a controller that controls at least the heat medium flow switching device on the inflow side or the outflow side that controls the amount of heat exchange in each of the heat exchangers related to heat medium during cooling only operation mode or heating only operation mode. | 09-20-2012 |
| 20120272672 | AIR-CONDITIONING APPARATUS - Providing an air-conditioning apparatus that is capable of securing safety while reducing load to the environment. | 11-01-2012 |
| 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 |
| 20120292006 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes a heat medium relay unit accommodating heat exchangers for exchanging heat between a flammable refrigerant and a heat medium different from the refrigerant. The heat medium relay unit is disposed in a space in a structure that is not an air conditioned space. One or more outdoor units are connected to the heat medium relay unit to circulate the refrigerant therein. The outdoor units are disposed in a space outside the structure or a space inside the structure that is not isolated completely from the space outside the structure. One or more indoor units are connected to the heat medium relay unit by a different system than that of the outdoor units. The indoor units circulate the heat medium therein to exchange heat with air related to the indoor space. | 11-22-2012 |
| 20120297803 | AIR-CONDITIONING APPARATUS - To provide an air-conditioning apparatus capable of achieving energy saving. In an air-conditioning apparatus, a first housing (an outdoor unit) that accommodates a compressor and a heat source side heat exchanger; a second housing (a heat medium relay unit) that accommodates a heat exchanger related to heat medium, an expansion device, and a pump; a third housing (a heat medium regulating unit) that accommodates a first heat medium flow switching device, a second heat medium flow switching device, and a heat medium flow control device; and a fourth housing (indoor unit) that accommodates a use side heat exchanger have separately different casings. | 11-29-2012 |
| 20120297804 | REFRIGERATION CYCLE APPARATUS - In the invention, control of the expansion device is carried out based on the temperature difference between the refrigerant temperature of the first representative point that becomes a predetermined enthalpy under the refrigerant pressure of the gas cooler and the detection temperature of the outlet temperature sensor, and control of the rotation speed of the compressor and/or the rotation speed of the heat medium sending device is/are carried out based on the second representative point that is, under the refrigerant pressure of the gas cooler, a temperature different from the first representative point. | 11-29-2012 |
| 20120324932 | AIR-CONDITIONING APPARATUS - To provide an air-conditioning apparatus that reduces large refrigerant noise generated when changing an operation mode. In an air-conditioning apparatus, when switching to a second operation mode from a first operation mode, switching to the second operation mode is performed after a predetermined time has elapsed after controlling either or all of expansion devices, controlling either or all of second flow switching devices, and controlling either or all of a first on-off device and a second on-off device such that a pressure difference of a heat source side refrigerant before and after each of the expansion devices is smaller compared to that in an operation state of the first operation mode. | 12-27-2012 |
| 20130031921 | REFRIGERATING AND AIR-CONDITIONING APPARATUS - A refrigeration cycle that is formed by connecting a compressor, a condenser, expansion means, and an evaporator and that performs cooling operation; an evaporator heating device that heats the evaporator; a drain pan that receives drain-water from the evaporator and drains the drain-water; a drain-pan heating device that heats the drain pan; frost detecting means including a light-emitting element that emits light to the evaporator and a light-receiving element that receives reflected light from the evaporator and outputs a voltage according to the reflected light; and a control device that controls on-off operation of the evaporator heating device and the drain-pan heating device. The control device determines a frosting condition on the evaporator from an output of the frost detecting means and individually controls the evaporator heating device and the drain-pan heating device in accordance with the determination result. | 02-07-2013 |
| 20130031932 | CROSS-FIN TYPE HEAT EXCHANGER AND REFRIGERATION CYCLE APPARATUS INCLUDING THE SAME - A plurality of heat transfer fins are arranged so as to surround straight pipe portions of heat transfer tubes connected through bends in a serpentine arrangement. Heat transfer surfaces for transferring heat between air of the heat transfer tubes and the heat transfer fins have holes each having a radius smaller than the critical radius of a nucleus that occurs upon phase change from water vapor to condensed water droplets such that the holes are filled with the air at all times. Water is allowed to move from the holes filled with the air having low surface energy to metal part having high surface energy, thus improving drainage. | 02-07-2013 |
| 20130133361 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus once transfers energy to a heat medium other than a refrigerant and introduces the heat medium to another refrigeration cycle to achieve safety improvement and high efficiency. | 05-30-2013 |
| 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 |
| 20130152613 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes a high-pressure side pressure detection device detecting high-pressure side pressure, a low-pressure side pressure detection device detecting low-pressure side pressure, a high-low pressure bypass pipe connecting a pipe on a discharge side of a compressor and a pipe on a suction side of the compressor, a bypass expansion device disposed in the high-low pressure bypass pipe, a high-pressure side temperature detection device detecting high-pressure side temperature, and a low-pressure side temperature detection device detecting low-pressure side temperature; an outdoor unit side controller that detects circulation composition of refrigerant on the basis of the high-pressure side pressure, the low-pressure side pressure, the high-pressure side temperature, and the low-pressure side temperature; and a relay unit side controller performing at least one of a calculation of evaporating temperature and degree of superheat, and a calculation of condensing temperature and degree of subcooling on the basis of the circulation composition. | 06-20-2013 |
| 20130167572 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus uses a zeotropic refrigerant mixture, in which its saturated liquid refrigerant temperature is lower than the saturated gas refrigerant temperature under the same pressure condition, as the heat source side refrigerant. When one or some of a plurality of heat exchangers related to heat medium functions as an evaporator, the air-conditioning apparatus executes an anti-freezing control that prevents the heat medium from freezing by estimating occurrence of freezing of the heat medium on the basis of a value obtained by subtracting a freezing temperature correction value that is set as a positive value larger than zero from an evaporating temperature of the refrigerant in the heat exchanger related to heat medium. | 07-04-2013 |
| 20130174592 | OUTDOOR UNIT AND AIR-CONDITIONING APPARATUS - An outdoor unit includes a compressor that compresses a flammable refrigerant, a heat source side heat exchanger that exchanges heat between the refrigerant and air in an unconditioned space, an outdoor unit air-sending device disposed at a position where the air is enabled to flow out of a housing to the outside, the outdoor unit air-sending device being driven to maintain the concentration of the refrigerant in the housing at or below a predetermined concentration, and an outdoor unit controller that controls an operation of the compressor and an operation of the outdoor air-sending device. The outdoor unit controller allows the outdoor unit air-sending device to operate in order to maintain the concentration of the refrigerant at or below the predetermined concentration even when the compressor is stopped. | 07-11-2013 |
| 20130174594 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes a heat medium circuit with a heat medium flow reversing device that can switch the flow direction of a heat medium in the heat medium side passage of the heat exchanger related to heat medium. | 07-11-2013 |
| 20130186126 | AIR-CONDITIONING APPARATUS - [Object] To reduce pressure loss of refrigerant while suppressing a cost increase. | 07-25-2013 |
| 20130192283 | AIR-CONDITIONING APPARATUS - A refrigerant circuit device includes a compressor, a heat exchanger that is capable of exchanging heat between the refrigerant and a heat medium, and other components that are connected by pipes, in which the refrigerant circuit circulates a refrigerant. A heat medium circulating circuit circulates the heat medium in the heat exchanger. At least the compressor is housed in an outdoor unit, at least the heat exchanger is housed in a heat medium relay unit, and an indoor unit is housed in a use side heat exchanger. The outdoor unit, the heat medium relay unit, and the indoor unit are formed separately and can be disposed in separate positions. A housing of the heat medium relay unit has an opening that allows ventilation between the housing space of the heat exchanger related to heat medium and the space outside the housing space. | 08-01-2013 |
| 20130199231 | HEAT MEDIUM RELAY UNIT AND AIR-CONDITIONING APPARATUS EQUIPPED WITH SAME - Obtained is a heat medium relay unit capable of having improved serviceability and an air-conditioning apparatus equipped with the heat medium relay unit. | 08-08-2013 |
| 20130205812 | METHOD OF PART REPLACEMENT FOR REFRIGERATION CYCLE APPARATUS AND REFRIGERATION CYCLE APPARATUS - A part replacement method replaces a part of a refrigeration cycle apparatus including a compressor, a heat source side heat exchanger, an expansion device, a heat exchanger related to heat medium, and first and second refrigerant flow closing devices. The first and second refrigerant flow closing devices control a flow of a refrigerant into and out of an outdoor unit accommodating the compressor and the heat source side heat exchanger. The method includes a pump-down step of closing the first refrigerant flow closing device, allowing the refrigerant in a pressure reduction section to flow into the outdoor unit and reducing a pressure in the reduction section until a set pressure or time is reached, a flow closing step of closing the second refrigerant flow closing device, and a part replacement step of removing the part from the refrigerant circuit by heating to replace the part. | 08-15-2013 |
| 20130205813 | METHOD OF PART REPLACEMENT FOR REFRIGERATION CYCLE APPARATUS - A part replacement method for replacement of a part of a refrigeration cycle apparatus includes a refrigerant circuit in which a flammable refrigerant is circulated and a container connecting device for controlling the refrigerant such that the refrigerant is allowed to flow out of the refrigerant circuit. The method includes a refrigerant recovery step of allowing the refrigerant to flow out of the refrigerant circuit through the container connecting device, a pressure reduction step of connecting a pressure reducing device to the container connecting device to reduce a pressure in the refrigerant circuit until the pressure in the refrigerant circuit reaches a set pressure or a setting time is reached, and a part replacement step of removing the part from the refrigerant circuit by heating to replace the part. | 08-15-2013 |
| 20130205818 | AIR-CONDITIONING APPARATUS - In an air-conditioning apparatus including a refrigerant circulating circuit A and a heat medium circulating circuit B that performs passing of heat to and from the refrigerant circulating circuit A, the heat medium circulating circuit is a closed circuit, the maximum pump head Pp of a pump of the heat medium circulating circuit is 150 kPa or more, and a pressure near at least a suction side of the pump is set to a charged pressure that is maintained equal to or higher than the atmospheric pressure during operation of the pump. | 08-15-2013 |
| 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 |
| 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 |
| 20130219937 | AIR-CONDITIONING APPARATUS - When using at least one of heat exchangers related to heat medium that exchange heat between a heat source side refrigerant and a heat medium as an evaporator, in a case where an air-conditioning apparatus has detected, in the heat exchanger related to heat medium that functions as the evaporator, an evaporating temperature of the heat source side refrigerant which causes the temperature of the heat medium passing through this heat exchanger related to heat medium to become equal to or lower than a freezing temperature, the air-conditioning apparatus performs a heat medium anti-freezing operation by blocking entry of the heat source side refrigerant into the heat exchanger related to heat medium that functions as the evaporator, and causing the heat source side refrigerant to flow to a bypass pipe. | 08-29-2013 |
| 20130219940 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus controls a heat medium passage reversing device so that, when it detects a heat medium flowing through a heat medium flow passage of the heat exchanger will not be frozen, a refrigerant flowing through a refrigerant flow passage of the heat exchanger related to heat medium and the heat medium flowing through the heat medium flow passage of the heat exchanger related to heat medium are in counter flow, and control the heat medium passage reversing device so that, when it detects that there is a possibility of freezing of the heat medium flowing through the heat medium flow passage of the heat exchanger related to heat medium, the refrigerant flowing through the refrigerant flow passage of the heat exchanger related to heat medium and the heat medium flowing through the heat medium flow passage of the heat exchanger related to heat medium are in parallel flow. | 08-29-2013 |
| 20130227976 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes a heat medium flow control device that adjusts the flow rate of a heat medium circulating in a use side heat exchanger, temperature sensors that are disposed in an inlet-side passage and an outlet-side passage of the use side heat exchanger and that detect temperatures of the heat medium, and a controller that controls the heat medium flow control device so that a temperature difference between a detection value of the temperature sensors is equal to a first target value. A refrigerant flowing through a refrigerant flow passage of the heat exchanger related to heat medium and a heat medium flowing through a heat medium flow passage of the heat exchanger related to heat medium are in counter flow relative to one another, and the controller changes the first target value in accordance with an operation state of a refrigerant circuit. | 09-05-2013 |
| 20130227977 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus directly detects leakage of a plurality of types of refrigerant by computing refrigerant concentrations, and ensure safety. On the basis of calibration curve information, a computing device computes the concentration of heat source side refrigerant in a heat medium relay unit from detected information received from a concentration detecting device. | 09-05-2013 |
| 20130233006 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus that includes a refrigeration cycle in which a compressor, a heat-source side heat exchanger, an expansion unit, and a load-side heat exchanger are included and are connected with refrigerant pipes, includes cutoff units capable of flowing or cut off a refrigerant circulating in the refrigeration cycle; a detection unit detecting leaking of the refrigerant on the basis of a resistance that changes with densities of plural kinds of leaked refrigerants; a concentration calculation unit calculating a concentration of a refrigerant that has leaked, on the basis of the resistance of the detection unit; a concentration detection unit outputting a calculation result of the concentration calculation unit in order that the calculation result is used for controlling the cutoff units; and a cutoff control unit controlling the cutoff units on the basis of an output of the concentration detection unit. | 09-12-2013 |
| 20130233008 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes a refrigerant circuit including a low-pressure shell structure compressor into which a refrigerant flowing through an injection pipe flows, a first heat exchanger, a second heat exchanger, a first expansion device, a refrigerant flow switching device, and a second expansion device configured to allow the refrigerant which has passed through the first expansion device and flows from the second heat exchanger to the first heat exchanger to have an intermediate pressure, the compressor, the first heat exchanger, the second heat exchanger, the first expansion device, the refrigerant flow switching device, and the second expansion device being connected by pipes to constitute the refrigerant circuit, and further includes a controller that controls an amount of refrigerant flowing through the injection pipe into a compression chamber. A part of a high-pressure refrigerant flowing from the first heat exchanger to the second heat exchanger flows through the injection pipe. | 09-12-2013 |
| 20130239602 | AIR-CONDITIONING APPARATUS - A heat pump hot-water supply apparatus controls a second expansion device during a heating operation so as to adjust the amount of refrigerant flowing through an injection pipe, and controls a third expansion device during a cooling operation so as to adjust the amount of refrigerant flowing through the injection pipe. | 09-19-2013 |
| 20130333862 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus controls that a discharge temperature does not become too high with a refrigerant whose compressor discharge temperature readily rises, and thus suppress degradation of the refrigerant and a refrigerating machine oil. An injection pipe that injects a heat source side refrigerant into a compressor is installed, connected a pipe between a backflow prevention device and an opening and closing device installed on a branching pipe, and an aperture unit in the compressor. | 12-19-2013 |
| 20140026605 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus controls an opening degree of at least one of a second expansion device and a third expansion device to adjust the amount of refrigerant to flow through the injection pipe. | 01-30-2014 |
| 20140033754 | AIR-CONDITIONING APPARATUS - An outdoor unit is configured to include a compressor and a heat source side heat exchanger. Indoor units are configured to include first expansion devices and use side heat exchangers, and air-condition an air-conditioned space. Branching devices, connected by pipes to the outdoor unit by a plurality of main pipes and connected by pipes to each indoor unit by a plurality of branch pipes, are configured to branch a refrigerant from a side of the main pipes and circulate the refrigerant to the branch pipes, and converge the refrigerant from a side of the branch pipes and circulate the refrigerant to the main pipes. A refrigerant concentration detecting device is installed in a non-air-conditioned space. A shutoff valve control device is configured, upon determining that the refrigerant has leaked, to control shutoff devices and to shut off the refrigerant flows. | 02-06-2014 |
| 20140083123 | AIR-CONDITIONING APPARATUS - In an air-conditioning apparatus, a controller controls an amount of refrigerant injection into a compressor by controlling an opening area of an expansion device such that the electric power consumption of the compressor becomes smaller, or such that a heating capacity or a cooling capacity of an intermediate heat exchanger becomes larger. | 03-27-2014 |
| 20140090409 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes a controller which calculates a composition ratio of a refrigerant mixture using a high-pressure-side pressure of a refrigerant discharged from a compressor, a low-pressure-side pressure of a refrigerant to be sucked into the compressor, a high-pressure-side temperature of a refrigerant at an inlet side of a second expansion device in a high/low pressure bypass pipe, and a low-pressure-side temperature of a refrigerant at an outlet side of the second expansion device in the high/low pressure bypass pipe and which determines whether to open or close a bypass-channel opening/closing device. | 04-03-2014 |
| 20140096551 | AIR-CONDITIONING APPARATUS - A computing device calculates a quality of a refrigerant flowing out of a second expansion device on the basis of an inlet liquid enthalpy calculated on the basis of a temperature of the refrigerant flowing into the second expansion device and a saturated gas enthalpy and a saturated liquid enthalpy calculated on the basis of a temperature of the refrigerant flowing out of the second expansion device or a pressure of the refrigerant sucked into a compressor; calculates a liquid-phase concentration and a gas-phase concentration of the refrigerant flowing out of the second expansion device on the basis of the temperature of the refrigerant flowing out of the second expansion device and the pressure of the refrigerant sucked into the compressor; and calculates a composition of the refrigerant circulating in a refrigeration cycle on the basis of the calculated quality, liquid-phase concentration, and gas-phase concentration. | 04-10-2014 |
| 20140130528 | AIR-CONDITIONING APPARATUS - A computing device calculates a quality of a refrigerant flowing out of an expansion device on the basis of an inlet liquid enthalpy calculated on the basis of a temperature of the refrigerant flowing into the expansion device, and a saturated gas enthalpy and a saturated liquid enthalpy calculated on the basis of a temperature or pressure of the refrigerant flowing out of the expansion device; calculates a liquid-phase concentration and a gas-phase concentration of the refrigerant flowing out of the expansion device on the basis of the temperature and pressure of the refrigerant flowing out of the expansion device; and calculates a composition of the refrigerant circulating in a refrigeration cycle on the basis of the calculated quality, liquid-phase concentration, and gas-phase concentration. | 05-15-2014 |
| 20140165635 | AIR-CONDITIONING APPARATUS - A channel on an upstream side of a third expansion device and a channel on an upstream side of a second expansion device are connected during a heating operation, and medium pressure refrigerant generated by the third expansion device during the heating operation is introduced on a suction side of a compressor via the second expansion device and a suction injection pipe. | 06-19-2014 |
| 20140182320 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes: an outdoor unit including a compressor, a first refrigerant flow path switching device, and a heat-source-side heat exchanger; a heat medium relay unit including an intermediate heat exchanger, an expansion device, a second refrigerant flow path switching device, and a pump; and at least one indoor unit including a use-side heat exchanger. The compressor, the first refrigerant flow path switching device, the expansion device, the second refrigerant flow path switching device, and the intermediate heat exchanger are connected using a refrigerant pipe, thereby making up a refrigeration cycle. The intermediate heat exchanger and the use-side heat exchanger are connected using a heat medium pipe, thereby making up a heat medium circulation circuit in which a heat medium different from the refrigerant circulates. | 07-03-2014 |
| 20140182329 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes a suction-injection pipe that introduces a refrigerant in a liquid or two-phase state into a suction side of a compressor, an expansion device that is arranged at the suction-injection pipe, and a controller that regulates the suction-injection flow rate of a refrigerant introduced into the suction side of the compressor through the suction-injection pipe by controlling the opening degree of the expansion device. | 07-03-2014 |
| 20140216076 | REFRIGERANT CHARGING METHOD FOR AIR-CONDITIONING APPARATUS AND AIR-CONDITIONING APPARATUS - When a first temperature difference is the difference between a saturated gas temperature of a first refrigerant at an inlet side and a saturated liquid temperature of the first refrigerant at an outlet side in a heat exchanger for heating, and when a second temperature difference is the difference between a saturated gas temperature of a second refrigerant at an outlet side and a temperature of the second refrigerant at an inlet side in the heat exchanger for heating, the difference between the first temperature difference and the second temperature difference is held in a predetermined value or less by charging the second refrigerant to the second refrigeration cycle so that a plurality of single refrigerants forming the second refrigerant have a predetermined mixing ratio. | 08-07-2014 |
| 20140216082 | AIR-CONDITIONING APPARATUS - A computing device calculates an evaporating temperature Te* and a dew-point temperature Tdew* from a quality X, a temperature glide ΔT determined by a difference between a boiling temperature and a dew-point temperature at a predetermined pressure, and a refrigerant temperature detected by second temperature detection means. | 08-07-2014 |
| 20140230473 | AIR-CONDITIONING APPARATUS - In an air-conditioning apparatus, a heat source side heat exchanger, intermediate heat exchangers, and use side heat exchangers are separately formed and adapted to be disposed at separate locations, respectively. There is provided a defrosting operation function to melt frost attached around the heat source side heat exchanger, and a heating function during defrosting operation that drives a pump to circulate a heat medium and supply heating energy to the use side heat exchangers in need of heating to perform heating operation. The defrosting operation function can be executed by switching a four-way valve to cooling side to introduce a high-temperature high-pressure refrigerant flowed out of the compressor into the heat source side heat exchanger. | 08-21-2014 |
| 20140260405 | AIR-CONDITIONING APPARATUS - When a first temperature difference is the difference between an inlet temperature of a first refrigerant and an outlet temperature of the first refrigerant in the heat exchanger for heating, and a second temperature difference is the difference between an inlet temperature of a second refrigerant and an outlet temperature of the second refrigerant in the heat exchanger for heating, the difference between the first temperature difference and the second temperature difference is held in a predetermined value or less by controlling the opening degree of a second expansion device. | 09-18-2014 |
| 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 |
| 20140331702 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus including a refrigeration cycle configured by connecting one or more load-side units including a load-side heat exchanger and a load-side expansion device with a heat-source-side unit including a heat-source-side heat exchanger and a compressor and by causing refrigerant to circulate through a refrigerant circuit including the load-side heat exchanger, the load-side expansion device, the heat-source-side heat exchanger, and the compressor, controls, during a heating operation, the opening degree of the load-side expansion device, based on the discharge pressure of the compressor, so that the pressure of refrigerant at the outlet of the compressor becomes equal to a target pressure, in the case where the operation capacity of the compressor is approximately at the maximum value of the operation capacity of the compressor. | 11-13-2014 |
| 20150020535 | 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, upon flowing into the injection pipe, merges with a part of the refrigerant discharged from the compressor, which has traveled through the connecting pipe and has transferred heat in the heat source side heat exchanger, and a merged refrigerant is supplied to the injection port of the compressor, 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. | 01-22-2015 |
| 20150033780 | AIR-CONDITIONING APPARATUS - In a case of a heating operation in which the use side heat exchanger functions as a condenser when an outside temperature is a predetermined low temperature, a low-outside-temperature heating operation start-up mode in which, while a refrigerant discharged from the compressor is caused to flow into the use side heat exchanger, a refrigerant is supplied to the injection port of the compressor via the injection pipe and part of the refrigerant that has transferred heat in the heat source side heat exchanger is supplied to the compressor, is followed by a low-outside-temperature heating operation mode in which the refrigerant discharged from the compressor is supplied to the injection port of the compressor via the injection pipe while the refrigerant being caused to flow into the use side heat exchanger. | 02-05-2015 |
| 20150075194 | AIR-CONDITIONING APPARATUS - An air-conditioning apparatus includes a refrigerant circuit formed by connecting a compressor that discharges a zeotropic refrigerant, an outdoor-side heat exchanger that exchanges heat between outside air and the refrigerant, a first expansion device that regulates the pressure of the refrigerant, and a load-side heat exchanger that exchanges heat between the air in an air-conditioning target space and the refrigerant. The air-conditioning apparatus includes a controller that has a composition computing function unit and a composition determining function unit The composition determining function unit is configured to adopt a predetermined value set in advance and related to composition as a circulating composition if the computation result is determined as incorrect, and adopt the computation result as the circulating composition if the computation result is determined as correct. | 03-19-2015 |
