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Title:
VEHICLE AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/129495
Kind Code:
A1
Abstract:
[Problem] To provide a heat pump-type vehicle air conditioning device that enables cooling of an object to be temperature controlled, wherein noise (abnormal noise) generated by a valve device when switching operation modes is eliminated or reduced. [Solution] A control device includes: a battery cooling (only) mode in which a solenoid valve 35 is closed and heat in a cooling medium is absorbed in a cooling medium/heat medium heat exchanger 64; and a battery cooling (priority) + air conditioning mode in which the solenoid valve 35 is opened and heat is absorbed from the cooling medium by a heat absorber 9 and the cooling medium/heat medium heat exchanger 64. The control device executes, when switching from battery cooling (only) mode to battery cooling (priority) + air conditioning mode, noise suppression control in which the pressure difference between the front and rear of the solenoid valve 35 is reduced and then the solenoid valve is opened.

Inventors:
YAMAZAKI YUMA (JP)
MIYAKOSHI RYO (JP)
YAMASHITA KOHEI (JP)
AOKI TAKAFUMI (JP)
ZHANG HONGMING (JP)
SHIBAOKA YOSHIKI (JP)
TOYAMA TAKASHI (JP)
Application Number:
PCT/JP2019/044843
Publication Date:
June 25, 2020
Filing Date:
November 15, 2019
Export Citation:
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Assignee:
SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORP (JP)
International Classes:
B60H1/22; B60H1/32; B60L3/00; B60L50/50
Domestic Patent References:
WO2017146270A12017-08-31
WO2015182219A12015-12-03
WO2017002547A12017-01-05
WO2017146266A12017-08-31
Foreign References:
JP2003279180A2003-10-02
JP2014088151A2014-05-15
JPH08268030A1996-10-15
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