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公开(公告)号：US20180297446A1
公开(公告)日：2018-10-18
申请号：US15580037
申请日：2016-06-01
Inventor： Ryo MIYAKOSHI , Kenichi SUZUKI , Kohei YAMASHITA
Abstract: Vehicle air conditioning device of a heat pump system in which comfort is compatible with decrease of power consumption. The vehicle air conditioning device includes a heating medium circulating circuit 23 to heat air to be supplied from an air flow passage 3 to a vehicle interior, and in a heating mode, a controller has an energy saving prior mode in which the controller operates a compressor 2 at a maximum number of revolution and complements a shortage of a heating capability by a radiator 4 with heating by a heating medium-air heat exchanger 40 of the heating medium circulating circuit 23, and a comfort prior mode in which the controller limits a number of revolution of the compressor 2 and complements the shortage of the heating capability by the radiator 4 with the heating by the heating medium-air heat exchanger 40 of the heating medium circulating circuit 23.
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公开(公告)号：US20180194191A1
公开(公告)日：2018-07-12
申请号：US15738746
申请日：2016-06-07
Inventor： Kenichi SUZUKI , Ryo MIYAKOSHI , Kohei YAMASHITA
Abstract: Air conditioner for a vehicle in which low pressure protection is accurately performed to improve reliability. A controller adjusts a number of revolution Nc of a compressor 2 so that a detected value does not decrease below a limiting target value TGTs, on the basis of the detected value of a suction temperature sensor and a limiting target value TGTs set to a suction refrigerant temperature of the compressor 2. The controller has a predetermined limiting lower limit TGTsL and a predetermined limiting upper limit TGTsH which is higher than the predetermined limiting lower limit, and adjusts the number of revolution Nc of compressor 2 so that the limiting target value TGTs is the limiting upper limit TGTsH on startup of compressor 2, and the controller gradually decreases the limiting target value TGTs toward the limiting lower limit TGTsL, when the detected value decreases to the limiting upper limit TGTsH.
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公开(公告)号：US20180178628A1
公开(公告)日：2018-06-28
申请号：US15579712
申请日：2016-06-01
Inventor： Kenichi SUZUKI , Ryo MIYAKOSHI , Kohei YAMASHITA
IPC: B60H1/00
Abstract: Vehicular air-conditioning device capable of inhibiting liquid return and generation of noise in an accumulator on startup of a compressor, and improving reliability and comfort. A controller lets a refrigerant discharged from a compressor 2 radiate heat in a radiator 4, and decompresses the refrigerant from which the heat has been radiated, to let the refrigerant absorb heat in an outdoor heat exchanger 7, thereby heating a vehicle interior. On startup of the compressor 2, the controller continues an operation at a predetermined startup number of revolution for a predetermined time, and then raises a number of revolution of the compressor 2 to a predetermined target number of revolution at a predetermined rising speed, and changes the startup number of revolution of the compressor 2 so as to lower the startup number of revolution as the outdoor air temperature is higher, on the basis of an outdoor air temperature.
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公开(公告)号：US20180141411A1
公开(公告)日：2018-05-24
申请号：US15572365
申请日：2016-05-02
Inventor： Ryo MIYAKOSHI , Kenichi SUZUKI
CPC classification number: B60H1/2209 , B60H1/20 , B60H1/2218 , B60H1/2225 , B60H2001/2231 , B60H2001/2256 , B60H2001/2287 , B60L1/003 , B60L3/0046 , B60L2240/34 , F24H3/0429 , F24H9/2071 , H05B1/0236 , H05B3/0004
Abstract: There is disclosed a vehicle air conditioner which is capable of achieving protection of an air flow passage without hindrance, even when a temperature sensor which detects a temperature of an electric heater fails. When a detected value of an electric heater temperature sensor detecting the highest temperature among a plurality of electric heater temperature sensors 61 to 64 is in excess of a predetermined threshold value, a controller executes a protecting operation of limiting energization to the electric heater or stopping the energization. The controller calculates an estimated value Thtrest of the temperature which is calculated back from a consumed power of the electric heater, and when one of the electric heater temperature sensors fails, the controller executes the protecting operation on the basis of the highest value among the detected values of the temperature sensors other than the electric heater temperature sensor and the estimated value.
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Patent Agency Ranking
公开(公告)号：US20210016629A1
公开(公告)日：2021-01-21
申请号：US16077209
申请日：2017-02-21
Inventor： Ryo MIYAKOSHI , Kenichi SUZUKI , Kohei YAMASHITA
Abstract: There is provided a vehicle air conditioning device of a heat pump system which improves comfortability when changing to heating only by an auxiliary heating device. The device includes a heating medium circulating circuit 23 to heat air to be supplied from an air flow passage 3 to a vehicle interior, and when shifting to the heating of the vehicle interior only by the heating medium circulating circuit 23 in a heating mode, a controller executes a shifting control to increase a heating capability of the heating medium circulating circuit 23 prior to stopping a compressor 2 and decrease a heating capability of a radiator 4 in accordance with the increase of the heating capability of the heating medium circulating circuit 23.
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公开(公告)号：US20190047362A1
公开(公告)日：2019-02-14
申请号：US16076963
申请日：2017-02-21
Inventor： Kenichi SUZUKI , Ryo MIYAKOSHI , Kohei YAMASHITA
Abstract: Vehicle air conditioning device comprising a bypass pipe which passes a radiator and an outdoor expansion valve, and opening/closing valves. A control device executes a heating mode to open solenoid valve 30 and close solenoid valve 40, and a dehumidifying and heating mode to close the solenoid valve 30, open solenoid valve 40, let a refrigerant radiate heat in outdoor heat exchanger 7, let the refrigerant absorb heat in heat absorber 9, and generate heat in auxiliary heater 23. When changing from the heating mode to the dehumidifying and heating mode, the control device sends the refrigerant to receiver drier portion 14, controls a compressor to reduce a difference between pressures before and after the solenoid valve 40, opens solenoid valve 40, closes solenoid valve 30, shuts off the outdoor expansion valve, and shifts the compressor to control in the dehumidifying and heating mode.
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公开(公告)号：US20180354343A1
公开(公告)日：2018-12-13
申请号：US15745541
申请日：2016-07-01
Inventor： Kenichi SUZUKI , Ryo MYAKOSHI , Kohei YAMASHITA
CPC classification number: B60H1/2225 , B60H1/00921 , B60H1/3213 , B60H2001/00957 , B60H2001/3263 , B60H2001/3272
Abstract: In an air-conditioning apparatus of a so-called heat pump system, wasteful power consumption to be generated when an auxiliary heating means is disposed on an air upstream side of a radiator is decreased, and comfortable heating of a vehicle interior is also achieved. The air-conditioning apparatus includes an electric heater 57 disposed on an upstream side of air flowing through an air flow passage 3 to a radiator 4, and a controller executes a cooperative operation of heating air to be supplied to the vehicle interior by the electric heater 57 and the radiator 4, and stops a compressor 2 on the basis of establishment of a condition that an inlet refrigerant temperature Tcxin of the radiator is lower than an outlet refrigerant temperature TCI of the radiator (Tcxin
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公开(公告)号：US20180178629A1
公开(公告)日：2018-06-28
申请号：US15738857
申请日：2016-06-07
Inventor： Kenichi SUZUKI , Ryo MIYAKOSHI , Kohei YAMASHITA
IPC: B60H1/00
CPC classification number: B60H1/00921 , B60H1/00385 , B60H1/00792 , B60H1/00885 , B60H1/32 , B60H1/3213 , B60H2001/006 , B60H2001/3248 , B60H2001/3272 , B60H2001/3285 , F25B13/00 , F25B40/02 , F25B41/00 , F25B2700/1931 , F25B2700/21151 , F25B2700/21152
Abstract: Heat pump type air conditioner for a vehicle in which a noise generated in opening an opening/closing valve (a solenoid valve) during changing of an operation mode is eliminated or reduced. The air conditioner has a dehumidifying and heating mode to let a refrigerant radiate heat in a radiator 4, decompress the refrigerant, and let the refrigerant absorb heat in heat absorber 9 and outdoor heat exchanger 7, and a cooling mode to let the refrigerant radiate heat in the outdoor heat exchanger, decompress the refrigerant, and let the refrigerant absorb heat in the heat absorber. Solenoid valve 21 and solenoid valve 22 opened in the dehumidifying and heating mode. When changing an operation mode from the cooling mode to the dehumidifying and heating mode, a difference between a pressure before each solenoid valve and a pressure after the valve is reduced, and then these valves are opened.
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公开(公告)号：US20180354342A1
公开(公告)日：2018-12-13
申请号：US15579821
申请日：2016-06-01
Inventor： Ryo MIYAKOSHI , Kenichi SUZUKI , Kohei YAMASHITA
CPC classification number: B60H1/00921 , B60H1/3207 , B60H1/3213 , B60H2001/00957 , B60H2001/3263 , B60H2001/3285 , F25B1/00 , F25B29/00 , F25B40/00 , F25B41/04 , F25B2341/066 , F25B2400/0409 , F25B2400/0411 , F25B2600/02 , F25B2600/11 , F25B2600/2513 , F25B2700/02 , F25B2700/1931 , F25B2700/1933 , F25B2700/2104 , F25B2700/2106 , F25B2700/21151 , F25B2700/21152
Abstract: Vehicle air conditioning device executes the dehumidifying mode in which a controller lets refrigerant discharged from compressor 2 radiate heat in radiator 4, decompresses the refrigerant from which heat has been radiated and then lets the refrigerant absorb heat in heat absorber 9 and outdoor heat exchanger 7, or lets the refrigerant discharged from compressor 2 radiate heat in radiator 4 and outdoor heat exchanger 7, decompresses the refrigerant from which heat has been radiated and then lets the refrigerant absorb heat in heat absorber 9. In the dehumidifying mode, the controller executes simple control to compare a target value of an index that is a basis of control of the outdoor expansion valve with an actual detected value and to change a valve position of the outdoor expansion valve from a magnitude relation between the value in an enlarging direction or a reducing direction as much as a constant value.
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