| FUJITSU GENERAL LIMITED Patent applications |
| Patent application number | Title | Published |
|---|
| 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 |
