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Patent Searching and Data


Title:
VEHICLE AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/137235
Kind Code:
A1
Abstract:
[Problem] To provide a vehicle air-conditioning device that has improved responsiveness by avoiding a shortage of compressor capacity (target rotational speed) when shifting to an operation state in which the number of evaporators for evaporating a refrigerant increases. [Solution] The present invention has a first operation state in which the refrigerant is evaporated by a heat absorber 9 or a refrigerant-heat medium heat exchanger 64 and a second operation state in which the refrigerant is evaporated by both. The target rotational speed of the compressor 2 is calculated by F/F calculation based on the target heat absorber temperature TEO for the heat absorber temperature Te and the target heat medium temperature TWO for the heat medium temperature Tw, and in the second operation state, correction is performed in a direction in which the F/F operation amount calculated by the F/F calculation becomes larger than in the first operation state.

Inventors:
AOKI TAKAFUMI (JP)
MIYAKOSHI RYO (JP)
YAMASHITA KOHEI (JP)
YAMAZAKI YUMA (JP)
ZHANG HONGMING (JP)
Application Number:
PCT/JP2019/044845
Publication Date:
July 02, 2020
Filing Date:
November 15, 2019
Export Citation:
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Assignee:
SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORP (JP)
International Classes:
B60H1/32; B60H1/00; F25B1/00; F25B5/02
Domestic Patent References:
WO2018147039A12018-08-16
Foreign References:
JP2013151231A2013-08-08
JP2012030663A2012-02-16
JP2013180722A2013-09-12
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