公开(公告)号：US12151538B2

公开(公告)日：2024-11-26

申请号：US17894581

申请日：2022-08-24

Applicant: DENSO CORPORATION

Inventor： Kazuhiro Tada ,  Yuuichi Kami ,  Zhaoliang Xu ,  Atsushi Inaba

IPC: B60H1/32 ,  B60H1/00

Abstract: A vehicle air conditioner includes a compressor, a heating unit, an outside air heat exchanger, a wind speed regulation unit, and a controller. The controller includes a melting control unit, a dry control unit, and a dry completion determination unit. In a dry defrosting mode, the melting control unit performs melting-defrosting to melt frost adhering to the outside air heat exchanger. The dry control unit performs a dry defrosting in which at least one of the amount of heat in a predetermined range or a wind speed regulated in a predetermined range by the wind speed regulation unit is supplied to residual water adhering to the outside air heat exchanger, due to melting of frost in the melting-defrosting, to dry the residual water. The dry completion determination unit determines whether drying of the residual water in the outside air heat exchanger is completed, in the dry defrosting.

公开(公告)号：US11472262B2

公开(公告)日：2022-10-18

申请号：US17194353

申请日：2021-03-08

Applicant: DENSO CORPORATION

Inventor： Jingyi Zhu ,  Zhaoliang Xu ,  Ziliang Yin

IPC: B60H1/00

Abstract: A heat pump air-conditioning system for a vehicle includes a refrigerant circuit, an auxiliary heater, and a control unit. The control unit compares a difference between a target blowout temperature and an actual blowout temperature with a predetermined first temperature threshold value in magnitudes, The control unit adjusts an opening degree of a first expansion valve and an opening degree of a second expansion valve. The control unit adjusts an output power of the auxiliary heater. The control unit executes a plurality of different modes of a heat pump air-conditioning to control the actual blowout temperature to approach and maintain at the target blowout temperature.