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Patent Searching and Data


Title:
VEHICULAR AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/146264
Kind Code:
A1
Abstract:
Provided is a vehicular air-conditioning device which is provided with flow path switching devices, and bypass piping which bypasses a radiator and an outdoor expansion valve, wherein the required minimum level of in-cabin air conditioning is ensured even if the flow path switching devices fail. The present invention is provided with: a compressor 2; a radiator 4; a heat absorber 9; an outdoor heat exchanger 7; bypass piping 35 which allows a refrigerant discharged from the compressor to flow directly into the outdoor heat exchanger without flowing thorough the radiator; solenoid valves 30, 40; an auxiliary heater 23; and a controller. The present invention switches between and executes a plurality of operation modes. The controller is capable of operating even if the solenoid valves 30, 40 fail. If the solenoid valves 30, 40 fail, the controller continues in-cabin air conditioning according to the selected operation mode, or continues air conditioning in an operating state capable of achieving in-cabin air conditioning substantially equivalent thereto.

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Inventors:
MIYAKOSHI RYO (JP)
SUZUKI KENICHI (JP)
Application Number:
PCT/JP2017/008037
Publication Date:
August 31, 2017
Filing Date:
February 21, 2017
Export Citation:
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Assignee:
SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORP (JP)
International Classes:
B60H1/22; B60H1/32; F25B49/02
Foreign References:
JP2013522116A2013-06-13
JP2011031704A2011-02-17
JP2014094676A2014-05-22
JP2012082992A2012-04-26
JP2012250708A2012-12-20
JP2002067659A2002-03-08
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