FUJITSU GENERAL LIMITED Patent applications |
Patent application number | Title | Published |
20160131135 | ROTARY COMPRESSOR - A rotary compressor includes: a vertically-positioned airtight compressor housing having an upper section including a discharge portion of a refrigerant, and a lower section including an inlet unit of the refrigerant and storing lubricant oil; a compressing unit, disposed in the lower section, compressing the refrigerant sucked in via the inlet unit and discharging the refrigerant from the discharge portion; a motor, disposed in the upper section, driving the compressing unit via a rotation shaft; and an accumulator attached to the compressor housing and connected to the inlet unit. Inside the accumulator and/or the compressor housing, silicon dioxide having a crystal structure containing a vacancy with a diameter equal to or less than a diameter of a water molecule or a composite including silicon dioxide having a crystal structure containing a vacancy with a diameter equal to or less than that of the water molecule is placed. | 05-12-2016 |
20150372610 | MATRIX CONVERTER - Disclosed is a matrix converter that directly converts input three-phase AC power into three-phase AC power and outputs the converted three-phase AC power to a load. The matrix converter includes: a bidirectional switch circuit that switches on or off the supply of the three-phase AC power to the load; and a controller that performs different virtual AC/DC conversion processes according to a plurality of modes which are divided depending on magnitude correlation between respective phase voltages in the input three-phase AC power, with respect to the input three-phase AC power, selects two phases from the input three-phase AC power, and generates switching patterns of the bidirectional switch circuit so as to perform the different DC/AC conversion processes according to the plurality of modes with respect to line voltages of the two selected phases. | 12-24-2015 |
20150040592 | OUTDOOR UNIT OF AIR CONDITIONER AND AIR CONDITIONER - An outdoor unit of an air conditioner includes: an outdoor fan; an outdoor air temperature detector; and a controller, wherein the controller performs: a fan defrost operation to circulate the refrigerant in the same order as in the case of a cooling operation and rotate the outdoor fan when the outdoor air temperature is within a predetermined temperature range, a fan defrost operation over a period of a first fan defrost operation time when the outdoor air temperature is lower than a first predetermined temperature, and a fan defrost operation over a period of a second fan defrost operation time that is longer than the first fan defrost operation time when the outdoor air temperature is equal to or higher than a second predetermined temperature that is higher than the first predetermined temperature. | 02-12-2015 |
20150035404 | ELECTRIC MOTOR - The electric motor includes a rotor and a stator, the stator having a conductive wire wound thereon via a stator core and insulators. The insulators include an annular outer peripheral wall portion with the conductive wire run on an outer periphery side of the peripheral wall portion, a plurality of winding body portions protruding radially from the outer peripheral wall portion, and an inner flange portion. The outer peripheral wall portion on the winding body portion side includes an outer peripheral surface formed in an arc shape. The radial thickness of the outer peripheral wall portion is increasingly greater toward the circumferential center of the winding body portions. | 02-05-2015 |
20140324231 | AIR CONDITIONING SYSTEM AND REMOTE CONTROLLER - An air conditioning system includes a plurality of air conditioner bodies that perform air-conditioning operation, a plurality of remote controllers that operate each of the air conditioner bodies, and pairing-setting unit. The pairing-setting unit has a main machine registration function and a sub machine registration function. A mode of operating the main machine with the remote controller is defined as a main-machine operation mode, while a mode of operating the sub machine with the remote controller is defined as a sub-machine operation mode. When the main-machine operation mode is switched to the sub-machine operation mode, the remote controller acquires operation information of all the registered sub machines. | 10-30-2014 |
20140312130 | AIR CONDITIONER - An air conditioner includes an air-conditioner body performing air-conditioning operation, and a remote controller to operate the air-conditioner body. The air-conditioner body includes control unit that performs operation control of the air-conditioner body, and body receiving unit that receives a transmission signal from the remote controller. The remote controller includes temperature detecting unit for detecting temperatures around the remote controller, and remote-controller transmission unit. At the time of cooling operation, the control unit compares the detected temperature received from the remote controller and a preset temperature predetermined. When the detected temperature is lower than the preset temperature, the control unit operates the air-conditioner body so as to reduce a temperature difference between the detected temperature and the preset temperature, or when the detected temperature is equal to or higher than the preset temperature, the control unit operates the air-conditioner body based on the preset temperature. | 10-23-2014 |
20140238069 | AIR CONDITIONER OUTDOOR UNIT AND AIR CONDITIONER - An air conditioner outdoor unit includes: a compressor; a heat source-side heat exchanger connected to the compressor; an oil separator disposed between a refrigerant discharge opening of the compressor and the heat source-side heat exchanger configured to separate a refrigerant oil from a refrigerant discharged from the compressor; and a first three-way valve fitted to a refrigerant pipe between the oil separator and the heat source-side heat exchange. | 08-28-2014 |
20140119968 | ROTARY COMPRESSOR - A rotary compressor includes a compression unit that includes an annular cylinder including a cylinder inner wall, a suction port, and a vane groove, an end plate covering an end portion of the cylinder, an annular piston revolving in the cylinder to form an actuation chamber between the cylinder inner wall and the annular piston; and a vane protruding into the actuation chamber to divide the actuation chamber into a suction chamber and a compression chamber. A discharge port, which is provided in the end plate near the vane groove, communicates with the compression chamber, and a discharge groove, which is provided in the cylinder inner wall near the vane groove, communicates the compression chamber with the discharge port, and one side end portion of the discharge groove is located in an end portion of a wall portion of the vane groove on the compression chamber side. | 05-01-2014 |
20140093414 | ROTARY COMPRESSOR - A rotary compressor, used e.g. in an air conditioner, includes a compressing unit having an end plate that closes an end portion of an annular cylinder. The end plate includes a groove portion accommodating a discharge valve portion having a reed valve type discharge valve and a discharge-valve limiter. The discharge valve portion is attached to the groove portion with a rivet. The groove portion has a rivet-side enlarged diameter portion formed into a semicircular step shape, and a diameter of the rivet-side enlarged diameter portion other than a bottom side thereof is larger than a diameter of the bottom side. This prevents a punch P that swages the rivet from interfering with the groove portion when attaching the discharge valve portion to the groove portion with the rivet. | 04-03-2014 |
20130314544 | NIGHT VISION IMAGE CAPTURING APPARATUS AND INFRARED RADIATING APPARATUS AND NIGHT VISION IMAGE CAPTURING SYSTEM - An imaging device includes pixels configured to sequentially output image signals for an infrared radiation having a first wavelength, an infrared radiation having a second wavelength and an infrared radiation having a third wavelength. A first pixel has the sensitivity to a first color of a primary color and outputting a first signal in response to reception of the infrared radiation having the shortest wavelength of the first wavelength, the second wavelength and the third wavelength. A second pixel has the sensitivity to a second color of the primary color and outputting a second signal in response to the reception of the infrared radiation having the shortest wavelength. A discriminating circuit is configured to compare the first signal and the second signal with each other to discriminate a reception timing of an infrared radiation having a selected wavelength in response to a relative sensitivity ratio. | 11-28-2013 |
20130297081 | AIR CONDITIONER - An air conditioner includes a remote controller that performs bidirectional communication using radio waves with an air-conditioner main body. The air-conditioner main body includes a main-body receiver that receives a control signal from the remote controller and a main-body transmitter that transmits operating information to the remote controller. The remote controller includes a remote-control transmitter that transmits a control signal to the main-body receiver, a remote-control receiver that receives the operating information from the main-body transmitter, a display unit that displays the operating information, a display controller that controls the display unit. The display controller displays, on the display unit, the operating information when the display controller receives the operating information from the main-body transmitter, and an indication of communication error when the display controller failes to receive the operating information, when communication between the remote controller and the air-conditioner main body is not established. | 11-07-2013 |
20130284417 | CONTROLLER CIRCUIT FOR AIR CONDITIONER AND COMPUTER-READABLE STORAGE MEDIUM CONTAINING PROGRAM INSTRUCTIONS FOR CONTROLLING AIR CONDITIONER - A first fan controlling section of a controller circuit is configured to control a first blower fan so as to induce the discharge of the airflow of a cool air through a first air outlet defined in a first enclosure of an indoor unit of the air conditioner. A second fan controlling section is configured to control second blower fans so as to induce the discharge of the airflows of a room air through second air outlets, respectively, defined in a pair of second enclosures disposed on the opposite sides of the first enclosure. An enclosure attitude controlling section is configured to change the respective attitude of the second enclosures relative to the first enclosure. | 10-31-2013 |
20130284411 | AIR CONDITIONER - An air conditioner includes a main unit having an enclosure defining an air outlet. The enclosure contains a heat exchanger generating a cool air or a warm air forming airflow running out of the air outlet. A pair of fan units are disposed on the opposite sides of the air outlet. The fan units are configured to suck a room air and to blow the room air. The heat exchanger includes a rear section having a length larger than that of a front section in the longitudinal direction of the air outlet. The rear section extends into at least one of spaces respectively defined behind the fan units. | 10-31-2013 |
20130284410 | AIR CONDITIONER - An air conditioner includes a main unit having an enclosure defining an air outlet. The enclosure contains a heat exchanger generating a cool air or a warm air forming airflow running out of the air outlet. A pair of fan units are disposed on the opposite sides of the air outlet. The fan units are configured to suck a room air and to blow the room air. The airflow of the room air can be utilized to control the direction and/or movement of the airflow of the cool air or the warm air. The cool air or the warm air can be conveyed to desired locations. | 10-31-2013 |
20130259725 | ROTARY COMPRESSOR - A rotary compressor includes an oiling mechanism that contains a vertical fitting hole formed on a countershaft portion in the lower part of the rotating shaft, and an oil pipe having an inlet port at the lower end and an opening at the upper end. The upper part of the oil pipe is press-fitted into the vertical fitting hole. The oiling mechanism further contains a pump vane having a vane portion and a base portion. The vane portion is twisting processed and inserted into the vertical oil hole to provide a space. The base portion is fixed into the lower part of the oil pipe that has an inner diameter smaller than the width thereof. | 10-03-2013 |
20130249329 | MOLDED MOTOR - A molded motor includes an annular yoke part, a stator including a stator core having, a plurality of teeth parts extending from an inner peripheral surface of the annular yoke part toward a center thereof, an insulator covering the stator core, an outer shell formed around the stator core and the insulator and made of resin, a rotor coaxially disposed at the center of the stator, a connecting wire guide provided on the insulator to stand in an axial direction of the stator core at a position corresponding to an engagement recess of an outer peripheral part of the outer shell, and a connecting wire guided by the connecting wire guide. A crimped part of a bracket adapted to be attached to an end face of the stator is engaged with the engagement recess when a part of a side end face of the bracket is crimped and secured. | 09-26-2013 |
20130227978 | AIR CONDITIONER - An air conditioner | 09-05-2013 |
20130192284 | AIR CONDITIONING APPARATUS - When the temperatures of outdoor heat exchangers | 08-01-2013 |
20130169085 | ELECTRIC MOTOR - An electric motor is provided with a rotator and a stator | 07-04-2013 |
20130108461 | PROPELLER FAN AND MANUFACTURING METHOD THEREOF | 05-02-2013 |
20130081417 | AIR CONDITIONING APPARATUS - An air conditioning apparatus | 04-04-2013 |
20130019622 | AIR CONDITIONING APPARATUS | 01-24-2013 |
20120308425 | ROTARY COMPRESSOR - A rotary compressor includes a first compressing unit and a second compressing unit arranged one on top of another with a partition board therebetween. The partition board is provided with a vertical hole and a horizontal hole. After the front end of an injection copper tube to inject a refrigerant liquid is loose fit in the horizontal hole, an injection liner having an outer diameter larger than the inner diameter of the injection copper tube is inserted into the injection copper tube from the back end and is pressed up to the front end to increase the diameter of the front end of the injection copper tube such that the injection copper tube is tight fit in the horizontal hole. | 12-06-2012 |
20120263612 | AXIAL GAP MOTOR AND PUMP DEVICE - Disclosed are a single rotor-type axial gap motor with low magnetic loss and high output, and a pump device using the axial gap motor. A first contact surface ( | 10-18-2012 |
20120248911 | MOLDED MOTOR - Provided is a molded motor that hardly causes electric corrosion in bearings and produces less noise and vibration. Electrical continuity between a bracket | 10-04-2012 |
20120195000 | OUTDOOR UNIT OF AIR CONDITIONER - An outdoor unit of air conditioner for efficiently cooling a board having a heater element and a heat generating component in an electrical component box, thereby enhansing heat release efficiency. Air flowing from a machinery chamber | 08-02-2012 |
20120194041 | OUTDOOR UNIT OF AIR CONDITIONER - An outdoor unit of air conditioner for ensuring strength against an impact applied to an electrical component box in a front-back, left-right, or top-bottom direction. The electrical component box | 08-02-2012 |
20120192585 | OUTDOOR UNIT OF AIR CONDITIONER - An outdoor unit of an air conditioner for facilitating setting of an electrical component box into the outdoor unit. A blower chamber | 08-02-2012 |
20120000553 | REFRIGERANT DISTRIBUTION UNIT FOR AIR CONDITIONER - A refrigerant distribution unit for an air conditioner, includes: a refrigerant pipe provided on an outdoor unit side; branch refrigerant pipes provided on an indoor unit side; a distribution portion which distributes a refrigerant from the refrigerant pipe to the branch refrigerant pipes; a main unit which stores the distribution portion and includes a first side face from which the refrigerant pipe is drawn out and a second side face from which the branch refrigerant pipes are drawn out; and an electric component box. Each of the branch refrigerant pipes includes a branch gas pipe and a branch liquid pipe which are drawn out from the second side face. The adjacent branch gas pipes are disposed parallel such that lengths of the branch gas pipes increase sequentially from one toward the other, and the adjacent branch liquid pipes are disposed parallel such that lengths of the branch liquid pipes similarly increase sequentially. | 01-05-2012 |
20120000230 | REFRIGERANT DISTRIBUTION UNIT FOR AIR CONDITIONER - A refrigerant distribution unit for an air conditioner, includes: a pipe unit for distributing a refrigerant from a refrigerant pipe on an outdoor unit to branch refrigerant pipes on indoor units; and a main body including: upper and lower seal case which include first edge portions around the upper seal case and second edge portions around the lower seal case, and engage the second edge portions with the first edge portions for sealing an inside of the first and second seal cases to store the pipe unit; upper and lower insulator cases for covering the upper and lower seal cases; and upper and lower case constituting a contour of the refrigerant distribution unit. The pipe unit is fixed to a pipe mounting portion of the upper seal case using a pipe holder and a pipe hanging bracket. | 01-05-2012 |
20120000227 | REFRIGERANT DISTRIBUTION UNIT FOR AIR CONDITIONER - A refrigerant distribution unit for an air conditioner, includes: a pipe unit which distributes a refrigerant from a refrigerant pipe on an outdoor unit side to multiple branch refrigerant pipes, which includes an electromagnetic valve and a temperature sensor, on an indoor unit side; a main unit which stores the pipe unit covered by an insulator case, upper and lower cases; and an electric component box which controls the electromagnetic valves and the temperature sensors by connecting the valves with the sensors by cables. A cable draw-out recessed portion is formed in one of side faces of the insulator case where the connecting slots for the pipes are formed, and a bottom face recessed portion for storing the cables is formed in a bottom face of the insulator case. The upper case includes a cable draw-out slot for guiding the cables to a cable guide hole formed in the electric component box. | 01-05-2012 |
20110241467 | PERMANENT MAGNET MOTOR - A permanent magnet motor is provided. The permanent magnet motor includes: a stator including a stator core, and an insulator for insulating the stator core from the wire; and a rotor in which a rotating shaft is attached to a center of the rotor and a permanent magnet is provided in an outer peripheral portion of the rotor. The stator core includes an annular yoke portion, a plurality of teeth extended radially from an inner periphery of the yoke portion, and a plurality of slots for accommodating a wire to be wound around the teeth at both ends in a circumferential direction of the teeth. A number of the slots in the stator core is set to be | 10-06-2011 |
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 |
20110138846 | DUCT TYPE AIR CONDITIONER - Even in the case of drop accident occurring due to a certain cause during transport or the like, it is intended by the present invention that any deformation of a motor support or a fan panel will not occur. A fan mechanism includes fan units having fan panels disposed vertically, motor supports mounted inwardly of said fan panels, motors mounted on said motor supports so that output shafts of the motors are parallel to the surfaces of the fan panels, fans positioned inwardly of said fan panels and driven by the motors, and spacers mounted to the motor supports so as to be positioned between the motor supports and a top plate or a bottom plate that serves as a bottom during conveyance. | 06-16-2011 |
20110138845 | DUCT TYPE AIR CONDITIONER - There is provided a duct type air conditioner that solves problems of assembling properties and serviceability. | 06-16-2011 |
20110138844 | DUCT TYPE AIR CONDITIONER - The present invention solves a problem that the registration of screw holes for mounting fan panels on a front plate is practically solved. | 06-16-2011 |
20110072840 | HEAT PUMP APPARATUS - A heat pump apparatus includes: a refrigerant circuit which includes a compressor, an utilization-side heat exchanger, a first expansion valve, and an outdoor heat exchanger; an injection pipe which includes a solenoid switching valve and a second expansion valve; and an objective supercooling degree table which stores objective supercooling degrees according to condensing pressure in the refrigerant circuit and rotation number of the compressor. In the heat pump apparatus, liquid refrigerant is injected to the compressor by way of the injection pipe. The heat pump apparatus switches between a first case where the liquid refrigerant is injected to the compressor and a second case where the liquid refrigerant is not injected, and a value of the objective supercooling degree is changed between the first case and the second case to control the first expansion valve based on the value of the objective supercooling degree. | 03-31-2011 |
20110072839 | HEAT PUMP APPARATUS - A heat pump apparatus includes: a refrigerant circuit which includes a compressor, a utilization-side heat exchanger for exchanging heat between water and refrigerant, an electronic expansion valve, and an outdoor heat exchanger; a controller which controls the compressor and the electronic expansion valve; a subcooling value calculating unit which calculates a subcooling value of the refrigerant circuit; a condensing pressure detector which detects condensing pressure of the compressor; a compressor rotation number detector which detects rotation number of the compressor; and an objective subcooling value extracting unit which selects and extracting an objective subcooling value stored in advance, from the condensing pressure and the rotation number of the compressor. The controller adjusts an opening degree of the electronic expansion valve so that the calculated subcooling value of the refrigerant circuit reaches the objective subcooling value. | 03-31-2011 |
20110068646 | Molded motor - To prevent electrolytic corrosion from occurring by reliably establishing an electrical conduction between a motor output shaft and brackets. A first bracket | 03-24-2011 |
20110050139 | PHASE DETECTION METHOD, PHASE DETECTING APPARATUS, SYNCHRONOUS-MOTOR CONTROL METHOD, AND SYNCHRONOUS MOTOR CONTROLLER - It is determined which of six continuous sections having different magnitude correlation of signal amplitude of each phase of an input three-phase signal a section is. Predetermined subtraction is performed between respective phases in the section, to obtain a normalized amplitude value normalized in the section, using the subtraction result. The normalized amplitude value is converted to a vector phase for one cycle based on a predetermined phase and output corresponding to the determined section. | 03-03-2011 |
20100236268 | AIR CONDITIONER - The filter | 09-23-2010 |
20100181863 | Electronic motor - There is provided an electronic motor in which a stator core is thinned to obtain an increased diameter of a rotor is to produce a high power output, and a stator can be positioned with high accuracy at the time when a coil is wound on the stator. The outside peripheral surface of a yoke part | 07-22-2010 |
20100176680 | Permanent magnet motor - There is provided a permanent magnet motor capable of reducing cogging torque and torque ripple while suppressing a decrease in motor output. In a permanent magnet motor | 07-15-2010 |
20100166575 | Magnet Embedded Rotor, Electric Motor Using the Same Rotor, and Compressor Using the Same Motor - A magnet embedded rotor is provided in which permanent magnets are embedded in the iron core of the rotor at a fixed interval. Notch parts are formed at the first protruding part and both the sides of the first protruding parts on the outer face between salient poles in the iron core of the rotor correspond to the multiple permanent magnets. Non-magnetic parts for preventing the short circuit of magnetic flux are formed at both the edges of the permanent magnets. A bridge part between the non-magnetic parts and the notch parts are narrowed as much as possible to an extent to cause a magnetic saturation, and one or multiple of the second protruding part extending to the direction of the outer face are formed at the notch parts. | 07-01-2010 |
20100147018 | Refrigeration apparatus - In the case where one compressor that is operated by being connected in parallel is a compressor in which the discharged oil amount is small, and the other compressor is a compressor in which the discharged oil amount is large, the amounts of refrigerator oil in the compressors are made approximately equal. In the refrigeration apparatus in which an outdoor unit | 06-17-2010 |
20100146998 | Refrigeration apparatus - There is provided a refrigeration apparatus in which a refrigerant accumulating in non-operating outdoor units is supplied to an outdoor unit being operated in which a shortage of refrigerant occurs without starting the compressors of the non-operating outdoor units. In the control method for the refrigeration apparatus in which to refrigerant piping | 06-17-2010 |
20100146994 | Refrigeration apparatus and method for controlling the same - In a refrigeration apparatus having a plurality of compressors, which are connected in parallel and are operated, in an outdoor unit, a compressor (inverter compressor) is started surely after the stoppage of operation. In the refrigeration apparatus in which the outdoor unit | 06-17-2010 |
20090284096 | Electrical motor and method for manufacturing the same - There is provided an electrical motor in which the dimensional accuracy of a stator is increased more easily, and the influence exerted on a magnetic circuit is kept as little as possible. In an electrical motor in which the stator | 11-19-2009 |
20090183521 | AIR CONDITIONER - There are provided a first guide channel | 07-23-2009 |
20090183471 | AIR CONDITIONER - An air conditioner has a dust catch filter interposed between an inlet and a heat exchanger, a cleaning unit | 07-23-2009 |
20090173817 | Method for manufacturing an axial air-gap electronic motor - An axial air-gap electronic motor has a teeth surface of a stator and a magnet surface of a rotor arranged opposedly along an axis line direction of an output shaft of the rotor with a predetermined gap being provided therebetween. The stator has a plurality of core members connected in a ring form. In manufacturing the electronic motor, after the teeth surfaces of the core members are arranged so as to face to each other and a dummy member is arranged between predetermined core members, a coil is wound from one end side toward the other end side of the core members continuously without being cut, and a coil of a length corresponding to a transition wire set between the core members is wound on the dummy member. | 07-09-2009 |
20080267804 | Rotary compressor - In a two-cylinder rotary compressor, two compressing sections accommodated in a compressor body and an accumulator are connected to each other by two suction pipes each formed with an L-shaped bend part in the intermediate pipe part thereof To reduce a pressure loss caused by the flow resistance of a refrigerant sucked from the accumulator into the compressor, the L-shaped bend parts of the two suction pipes are arranged on different imaginary planes including the center axis line of the compressor body. | 10-30-2008 |
20080240954 | Rotary compressor - There is provided a two-stage compression rotary compressor in which the balancer mass of a rotor can be made as small as possible, and the moments that tilt the whole of a shaft can be balanced. The axial length L | 10-02-2008 |
20080236192 | Rotary compressor and heat pump system - There is provided a rotary compressor in which the pressure loss in a refrigerant suction pipe connecting the compressor and an accumulator to each other is reduced, and the compression efficiency is increased. The inside diameter D | 10-02-2008 |