Air conditioning apparatus

Details Air conditioning apparatus Air conditioning apparatus

1996-06-21

1997-09-23

Tanner, Harry B.

Refrigeration

Automatic control

Refrigeration producer

62213, 62223, B60H 100

Patent

active

056692315

ABSTRACT:
When a defroster switch is input in a heating operation mode, an opening degree of an electric type of a heating expansion valve is controlled to be smaller when temperature of refrigerant discharged from a compressor is less than a predetermined temperature. Therefore, the supercooling degree of the liquid refrigerant of an indoor heating heat exchanger becomes large, the temperature of the heat exchanger becomes high, so that the temperature of air which is blown from a defroster outlet becomes high. Thus, the defrosting effect of a front windshield glass can be increased. Accordingly, when the defrosting of the front windshield is needed, the defrosting effect is increased as compared with when the defrosting is not needed.

REFERENCES:
patent: 4354547 (1982-10-01), Sugiura
patent: 4848444 (1989-07-01), Heinle et al.
patent: 4852363 (1989-08-01), Kampf et al.
patent: 4917293 (1990-04-01), Fedter et al.
patent: 4920755 (1990-05-01), Tadahiro
patent: 4966012 (1990-10-01), Iida
patent: 5572877 (1996-11-01), Ikeda et al.

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