Sanden Automotive Climate Systems Corporation

Sanden Corporation

Sanden Holdings Corporation

Tetsuya Ishizeki

Ryo Miyakoshi

Kohei Yamashita

Megumi Shigeta

Yoshiyuki Okamoto

Akira Horikoshi

Kouhei Yamashita

Takashi Toyama

Takayuki Matsumura

Takefumi Tomiya

Nobuhiko Fujii

Kazuki Sekiguchi

Yuma Yamazaki

Hidenori Takei

Osamu Takazawa

Yoshihito Chabata

Kentaro Moriya

Yasunobu Takano

Taichi Fujita

There is provided a vehicle air-conditioning device capable of smoothly achieving pre-air-conditioning for preliminarily heating a vehicle interior without forming frost on an outdoor heat exchanger or while preventing frost formation thereon as much as possible. When the temperature of a batteryor a motorfor running is higher than or equal to a predetermined specified value upon executing the pre-air-conditioning for preliminarily heating the vehicle interior before boarding, a controlleroperates a compressorto let a refrigerant discharged from the compressor radiate heat in a radiator, decompress the refrigerant from which the heat is radiated, and then let the refrigerant absorb heat in a waste heat recovering heat exchangerwithout using an outdoor heat exchanger

Vehicle air-conditioning device

A cooling and battery cooling mode is performed to release the heat from the refrigerant in a heat releasing unit and an outdoor heat exchanger and to absorb the heat into the refrigerant in a heat absorbing unit and a refrigerant-heat medium heat exchanger, and a heating and battery cooling mode is performed to release the heat from the refrigerant in the heat releasing unit and to absorb the heat into the refrigerant in the outdoor heat exchanger and the in-vehicle device heat exchanger. In a case where the cooling and battery cooling mode is performed, when a temperature of the heat absorbing unit is lower than a target value of the temperature of the heat absorbing unit even though the flowing of the refrigerant into the heat absorbing unit is blocked, the operation mode is moved to the heating and battery cooling mode.

Vehicle air conditioning apparatus

The vehicle air conditioning device includes a compressor, a radiator, an outdoor heat exchanger, and an air conditioning controller, and a cabin is, air conditioned with power supplied from a battery. The air conditioning controller can perform air conditioning operation that causes a refrigerant from the compressor to radiate heat in the radiator, decompresses the refrigerant, causes the refrigerant to absorb heat in the outdoor heat exchanger so as to heat the cabin, and defrosting operation that causes the refrigerant from the compressor to radiate heat in the outdoor heat exchanger so as to defrost the outdoor heat exchanger, and determines whether it is possible to perform the defrosting operation on the basis of outside humidity.

Vehicle air conditioning device

A vehicle air conditioning device executes an air conditioning operation for heating inside of a cabin by causing a refrigerant discharged from a compressorto dissipate heat in a radiator, decompressing the refrigerant, and then causing the refrigerant to absorb heat in an outdoor heat exchanger, and includes an equipment temperature adjusting devicecapable of adjusting, using the refrigerant, the temperature of a batteryand the temperature of a traveling motor, which is a temperature-adjusted object other than the battery, the batteryand the traveling motorbeing mounted on a vehicle. An air conditioning controller has a heating/waste heat recovery mode for cooling the traveling motorwithout cooling the battery with the refrigerant by controlling the equipment temperature adjusting devicein the air conditioning operation for heating the inside of the cabin.

To provide a vehicle air conditioning apparatus capable of smoothly performing temperature adjustment of a battery and a temperature-adjusted object other than the battery that are mounted on a vehicle. A vehicle air conditioning apparatus includes an equipment temperature adjusting devicefor circulating a heating medium to a batteryand a traveling motorto adjust the temperature of the batteryand the temperature of the traveling motor. The equipment temperature adjusting device includes circulating pumps, andfor circulating the heating medium to the battery and the temperature-adjusted object, a refrigerant-heating medium heat exchangerfor exchanging heat between a refrigerant and the heating medium, an air-heating medium heat exchangerfor exchanging heat between outdoor air and the heating medium, and three-way valvestofor controlling circulation of the heating medium to the battery and the traveling motor.

Provided is a vehicle air conditioning device that can save the space for installing constituent apparatuses of a vehicle by using a heater for multiple purposes and reduce the manufacturing cost. Heating assisting operation for heating air to be supplied into a cabin is performed in a manner that a heat medium heated by a heat medium heaterin a heat medium circuitflows to a heat medium radiatorwithout flowing on a battery B side while heating operation is performed.

Vehicle air conditioner

A vehicle air conditioner having a compressor to compress a refrigerant, an air flow passage to supply air to the vehicle; a radiator; an outdoor heat exchanger; a battery temperature adjustment device for letting a heat medium circulate through a battery mounted in the vehicle, thereby adjusting a temperature of the battery; and a control device. The battery temperature adjustment device has a refrigerant-heat medium heat exchanger for performing exchange of heat between the refrigerant and the heat medium. The control device is configured to execute: a radiator and outdoor heat exchanger heating/battery cooling mode, and an obstruct inflow heating/battery cooling mode.

Air conditioner for vehicle

A vehicle air-conditioning device includes a compressor, a radiator, an outdoor heat exchanger, a first heat medium circulating deviceto let a first heat medium circulate in a heat medium heating heater, and a second heat medium circulating deviceto let a second heat medium circulate in a battery. The first heat medium circulating device has a first heat medium heat exchanging unitA which exchanges heat between a refrigerant and the first heat medium. The second heat medium circulating device has a second heat medium heat exchanging unitB which exchanges heat between the first heat medium and the second heat medium.

A vehicle air conditioning apparatus includes: a refrigerant circuit that adjusts a temperature or a humidity of air in a vehicle compartment, including a compressor, indoor heat exchangers, an outdoor heat exchanger, and expansion valves; a first heat medium circuit that allows a first heat medium absorbing heat released from a first heat releasing body to flow therethrough; a second heat medium circuit that allows a second heat medium absorbing heat released from a second heat releasing body to flow therethrough; a first heat medium heat releasing unit that performs a heat exchange between the refrigerant and the first heat medium to release the heat from the first heat medium to the refrigerant; and a second heat medium heat releasing unit that performs a heat exchange between the first heat medium and the second heat medium to release the heat from the second heat medium to the first heat medium.

A vehicle air-conditioning apparatus is provided which is capable of expanding an effective range of a dehumidifying and heating mode to achieve comfortable vehicle interior air conditioning. A control device (controller) executes a dehumidifying and heating mode to let a refrigerant discharged from a compressorradiate heat in a radiator, let a part of the refrigerant flow from a bypass circuit (refrigerant pipeF) to an indoor expansion valve, and let the residual refrigerant flow through an outdoor expansion valve. In the dehumidifying and heating mode, the control device has a state of controlling the operation of the compressor, based on a heat absorber temperature Te and executes a radiator temperature priority mode which enlarges a capability of the compressor when heat radiation in the radiator is insufficient.

Vehicle air-conditioning apparatus

A vehicular air conditioning device is provided which is capable of cooling a heat medium of a battery temperature adjustment device by a refrigerant in a refrigerant circuit to improve operation efficiency when a battery is to be cooled. The vehicular air conditioning device includes a battery temperature adjustment device () for circulating a heat medium in a battery () to cool the same, a refrigerant-heat medium heat exchanger () for exchanging heat between at least part of the refrigerant flowing out from an outdoor heat exchanger () and the heat medium circulating in the battery temperature adjustment device, and an auxiliary expansion valve () for decompressing the refrigerant flowing into the refrigerant-heat medium heat exchanger. A control device controls a compressor () or the auxiliary expansion valve on the basis of a temperature Tw of the refrigerant of the refrigerant-heat medium heat exchanger to thereby adjust a battery temperature Tb to a target battery temperature TBO.

Vehicular air conditioning device

An air conditioner includes a battery temperature adjustment device which adjusts the temperature of a battery and has a refrigerant-heat medium heat exchanger to exchange heat between a refrigerant and a heat medium. A controller executes a first heating/battery cooling mode to let the refrigerant discharged from a compressor radiate heat in a radiator, decompress the refrigerant, and then let the refrigerant absorb heat in an outdoor heat exchanger and the refrigerant-heat medium heat exchanger, and a second heating/battery cooling mode to let the refrigerant discharged from the compressor radiate heat in the radiator and the outdoor heat exchanger, decompress the refrigerant, and then let the refrigerant absorb heat in the refrigerant-heat medium heat exchanger.

There is disclosed a vehicle air conditioning device which inhibits generation of noise in a solenoid valvedisposed on an inlet side of a radiatorand improves durability of the solenoid valve. A second operation mode is executed to shut off an outdoor expansion valve, close the solenoid valve, open a solenoid valveand thereby send a refrigerant discharged from a compressorthrough a bypass pipeto an outdoor heat exchanger. When a first operation mode to open the solenoid valveand close the solenoid valveand thereby send the refrigerant to the radiatoris shifted to the second operation mode, a controller opens the solenoid valveat a timing to stop the compressor

A vehicle air-conditioning device is provided which is capable of eliminating inconvenience due to a reduction in heating capability when changing from heat absorption from outdoor air to heat absorption from a heat medium. A heat-generating equipment temperature adjusting devicehas a heat medium heating heaterand a refrigerant-heat medium heat exchanger. The vehicle air-conditioning device has first and second heat medium heat absorption/heating modes to let a refrigerant discharged from a compressorradiate heat in a radiator, decompress the refrigerant from which the heat has been radiated, and then let the refrigerant absorb heat in the refrigerant-heat medium heat exchanger. When the temperature of the heat medium is a predetermined threshold Tor less upon changing from a heating operation to the first and second heat medium heat absorption/heating modes, the heat medium is heated by the heat medium heating heater before the changing.

A vehicular air conditioner is provided which is capable of heating a vehicle interior with heat of a battery and also preventing deterioration in heating performance due to a decrease in circulating refrigerant. The vehicular air conditioner includes a battery temperature adjustment deviceto circulate a heat medium to thereby adjust the temperature of a batterymounted on a vehicle. The battery temperature adjustment devicehas a refrigerant-heat medium heat exchangerto exchange heat between the refrigerant and the heat medium, and includes a check valveto return the refrigerant flowing out from the refrigerant-heat medium heat exchangerto a suction side of the compressorand to obstruct the flow of the refrigerant flowing out from the refrigerant-heat medium heat exchangerand directed toward an outdoor heat exchangerand a heat absorber

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Isesaki, Japan

Tetsuya Ishizeki