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公开(公告)号：US11192428B2
公开(公告)日：2021-12-07
申请号：US16614188
申请日：2018-04-23
发明人： Ryo Miyakoshi , Megumi Shigeta , Osamu Takazawa , Kohei Yamashita
摘要： A vehicle air-conditioning device is provided which is capable of eliminating or suppressing vibration and noise generated due to the application of a counterpressure to an opening/closing valve. The vehicle air-conditioning device includes a refrigerant circuit R having a compressor 2, a radiator 4 to perform heat exchange between a refrigerant and air, an outdoor heat exchanger 7, a heat absorber 9, and a solenoid valve 40. The compressor 2 and the solenoid valve 40 are controlled to air-condition a vehicle interior. A decompression speed at a refrigerant inflow side of the solenoid valve when the compressor 2 is stopped and the solenoid valve 40 is closed is faster than that at a refrigerant outflow side thereof. When operation is stopped from a state in which the compressor 2 is operating with the solenoid valve 40 being in an opened state, the opened state of the solenoid valve 40 is maintained even after the compressor 2 is stopped.
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公开(公告)号：US10926609B2
公开(公告)日：2021-02-23
申请号：US16305774
申请日：2017-05-11
发明人： Tetsuya Ishizeki , Yuma Yamazaki , Akira Horikoshi , Kohei Yamashita , Ryo Miyakoshi , Megumi Shigeta
IPC分类号： B60H1/32
摘要： There is disclosed a vehicle air conditioning device which is capable of judging, as early as possible, refrigerant shortage, for example, due to leakage of refrigerant with elapse of time, and protecting a compressor. The vehicle air conditioning device includes a compressor 2, a radiator 4, an outdoor expansion valve 6, and a heat absorber 9. A control device possesses normal time data indicating a relation between a suction refrigerant temperature Ts and a discharge refrigerant temperature Td of the compressor when a refrigerant circuit R is charged with a sufficient amount of the refrigerant. The control device calculates, from the normal time data, a discharge refrigerant temperature estimated value Tdst at normal time on the basis of the current suction refrigerant temperature Ts, and compares the value and the current discharge refrigerant temperature Td, thereby judging refrigerant shortage of the refrigerant circuit.
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公开(公告)号：US11618301B2
公开(公告)日：2023-04-04
申请号：US17273613
申请日：2019-08-08
发明人： Tetsuya Ishizeki , Megumi Shigeta
IPC分类号： B60H1/00
摘要： 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 heater 32 in a heat medium circuit 30 flows to a heat medium radiator 16 without flowing on a battery B side while heating operation is performed.
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