Vehicle air conditioner with hot-gas heater cycle

Details Vehicle air conditioner with hot-gas heater cycle Vehicle air conditioner with hot-gas heater cycle

2006-03-21

2006-03-21

Ford, John K. (Department: 3753)

Heat exchange

With timer, programmer, time delay, or condition responsive...

Having heating and cooling capability

C165S042000, C165S043000, C165S265000, C062S001000, C062S164000, C062S196400

Reexamination Certificate

active

07013966

ABSTRACT:
A vehicle air conditioner selectively switches one of a cooling mode in which an interior heat exchanger of a refrigerant cycle is operated as an evaporator for cooling air, and a hot-gas heating mode in which the interior heat exchanger is operated as a radiator for heating air. The cooling mode is selected by turning on an air-conditioning switch, and the hot-gas heating mode is selected by turning on a hot gas switch. When both the switches are turned on at the same time, a control unit determines a priority mode having a higher necessity among the hot-gas heating mode and the cooling mode. Specifically, the hot-gas heating mode is automatically set by the control unit when the outside air temperature is lower than a predetermined temperature, and the cooling mode is automatically set by the control unit when the outside air temperature is higher than the predetermined temperature.

REFERENCES:
patent: 5291941 (1994-03-01), Enomoto et al.
patent: 6105375 (2000-08-01), Takano et al.
patent: 0 894 651 (1999-02-01), None
patent: 0 913 281 (1999-05-01), None
patent: 3-121905 (1991-12-01), None
Japanese Examination Report dated May 11, 2004 from corresponding Japanese Application No. 2001-371782.
European Office Action dated Dec. 2, 2003 from corresponding European Application No. 02 02 6903.

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