Title:
VEHICULAR AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2018/088124
Kind Code:
A1
Abstract:
Provided is a vehicular air conditioner capable of eliminating the inconvenience that a compressor is operated in a state where the operational efficiency is low. The progress of frost formation on an outdoor heat exchanger 7 is determined on the basis of the difference ΔTXO = TXObase - TXO between refrigerant evaporation temperature TXO and refrigerant evaporation temperature TXObase when the refrigerant evaporation temperature TXO of the outdoor heat exchanger 7 becomes lower than the refrigerant evaporation temperature TXObase of the outdoor heat exchanger during no frost formation, or on the basis of the difference ΔPXO between refrigerant evaporation pressure PXO and refrigerant evaporation pressure PXObase during no frost formation. If the state in which the frost formation on the outdoor heat exchanger 7 is proceeding is maintained for a predetermined time period, a compressor 2 is stopped.
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Inventors:
MIYAKOSHI RYO (JP)
YAMASHITA KOUHEI (JP)
YAMASHITA KOUHEI (JP)
Application Number:
PCT/JP2017/037291
Publication Date:
May 17, 2018
Filing Date:
October 10, 2017
Export Citation:
Assignee:
SANDEN AUTOMOTIVE CLIMATE SYSTEMS CORP (JP)
International Classes:
B60H1/22; F25B47/02
Foreign References:
| JP2014231261A | 2014-12-11 | |||
| JP2011127853A | 2011-06-30 | |||
| JP2012176660A | 2012-09-13 | |||
| JP2015215101A | 2015-12-03 | |||
| JP2004053207A | 2004-02-19 | |||
| US20150040589A1 | 2015-02-12 |
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