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Patent Searching and Data


Title:
VEHICLE AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2017/179597
Kind Code:
A1
Abstract:
Provided is a vehicle air conditioner such that liquid returning to a compressor and noise generation due to bumping in an accumulator can be suppressed. This vehicle air conditioner executes a heating mode and a dehumidifying and heating mode. In the heating mode, when a solenoid valve 17 is closed and a solenoid valve 21 is opened, the heat in a refrigerant is dissipated by a radiator 4, and the refrigerant is decompressed by an outdoor expansion valve 6 and then absorbs heat in an outdoor heat exchanger 7 and flows to an accumulator 12. In the dehumidifying and heating mode, when the solenoid valve 17 is opened and the solenoid valve 21 is closed, the refrigerant is decompressed by an indoor expansion valve 8 and then absorbs heat in a heat absorber and heats an auxiliary heater 23. The opening degree of the outdoor expansion valve 6 is reduced for a predetermined time period before the transition from the heating mode to the dehumidifying and heating mode.

Inventors:
ISHIZEKI TETSUYA (JP)
SEKIGUCHI KAZUKI (JP)
YAMASHITA KOHEI (JP)
MIYAKOSHI RYO (JP)
Application Number:
PCT/JP2017/014891
Publication Date:
October 19, 2017
Filing Date:
April 05, 2017
Export Citation:
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Assignee:
SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORP (JP)
International Classes:
B60H1/22; B60H1/32; F25B1/00
Domestic Patent References:
WO2015182219A12015-12-03
Foreign References:
JP2013241094A2013-12-05
JPH05264134A1993-10-12
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