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Title:
VEHICLE AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2014/073691
Kind Code:
A1
Abstract:
[Problem] To provide a vehicle air conditioner that can reduce electricity consumption by improving the accuracy of frost determination on an outdoor heat exchanger, maintaining heating performance, and avoiding unnecessary defrosting. [Solution] A controller that implements a heating mode. A controller (32) ascertains the formation of frost on an outdoor heat exchanger (7) either on the basis of the refrigerant evaporation pressure (PXO) of the outdoor heat exchanger (7) and the refrigerant evaporation pressure (PXObase) of the outdoor heat exchanger (7) when no frost is present, or on the basis of the refrigerant evaporation temperature (TXO) of the outdoor heat exchanger (7) and the refrigerant evaporation temperature (TXObase) of the outdoor heat exchanger (7) when no frost is present, and then feeds high temperature refrigerant gas to the outdoor heat exchanger (7) to defrost the outdoor heat exchanger (7).

Inventors:
MIYAKOSHI Ryo (20 Kotobuki-ch, Isesaki-shi Gunma 02, 〒3728502, JP)
SUZUKI Kenichi (20 Kotobuki-ch, Isesaki-shi Gunma 02, 〒3728502, JP)
TAKEI Hidenori (20 Kotobuki-ch, Isesaki-shi Gunma 02, 〒3728502, JP)
YAMASHITA Kouhei (20 Kotobuki-ch, Isesaki-shi Gunma 02, 〒3728502, JP)
Application Number:
JP2013/080476
Publication Date:
May 15, 2014
Filing Date:
November 11, 2013
Export Citation:
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Assignee:
SANDEN CORPORATION (20 Kotobuki-cho, Isesaki-shi Gunma, 02, 〒3728502, JP)
International Classes:
B60H1/22; B60H1/32; F25B47/02
Domestic Patent References:
WO2009093297A12009-07-30
Foreign References:
JP2012176660A2012-09-13
JP2011127853A2011-06-30
JP2007225158A2007-09-06
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