Heat exchange – With timer – programmer – time delay – or condition responsive... – Having heating and cooling capability
Reexamination Certificate
2007-04-24
2007-04-24
Ford, John K. (Department: 3744)
Heat exchange
With timer, programmer, time delay, or condition responsive...
Having heating and cooling capability
C165S042000, C165S043000, C165S240000, C165S241000, C062S196400, C062S133000, C062S228300, C062S238600, C237S00200B
Reexamination Certificate
active
10382975
ABSTRACT:
An automotive air conditioning system comprising a main heating unit4for heating air passing through an air conditioning duct2with cooling water of an engine E and a refrigeration cycle device20having a first refrigerant circulating circuit21which is a cooler mode and a second refrigerant circulating circuit22which is a heater mode and whose operation is controlled by an ECU10, wherein while the automotive air conditioning system is operated in a heater mode functioning as auxiliary heating, in the event that a heating load is equal to or larger than a predetermined value, a refrigerant compressor7is kept switched off until a predetermined time T1has elapsed after the engine E has started.In addition, a heating device is provided on the refrigerant compressor or an accumulator so that the refrigerant compressor or the accumulator is heated by the heating devices while the automotive air conditioning system is operated in the heater mode functioning as auxiliary heating.
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Patent Abstracts of Japan, Publication No. 11042934 dated Feb. 16, 1999.
Kurata Shun
Takano Yoshiaki
DENSO Corporation
Ford John K.
Harness Dickey & Pierce PLC
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