Refrigerant heating type air conditioner

Details Refrigerant heating type air conditioner Refrigerant heating type air conditioner

1992-12-30

1994-06-28

Ford, John K.

Heat exchange

Movable heating or cooling surface

Rotary drum

622386, 622387, 237 2B, F25B 2900

Patent

active

053238443

ABSTRACT:
A refrigerant heating type air conditioner operable in a cooling mode and a heating mode includes a first external heat exchanger which works as a condenser in the cooling mode and a second external heat-exchanger which works as an evaporator. Bypass means is disposed between a discharge side of a compressor and the second external heat-exchanger. An expansion valve is connected to an inner heat-exchanger, which works as a condenser in the heating mode, and to both the first and second external heat-exchangers. A control valve is disposed between a suction port side of the second external heat-exchanger for preventing the refrigerant from flowing to the second external heat-exchanger in the cooling mode. Pressure of the refrigerant which is trapped between the control valve and the expansion valve is increased by applying heat, by heating means, to the second external heat-exchanger. The heated refrigerant is released to the bypass means when its pressure exceeds to the pressure of discharged refrigerant from the compressor.

REFERENCES:
patent: 3188829 (1965-06-01), Siewert et al.
patent: 4112705 (1978-09-01), Sisk et al.
patent: 4441901 (1984-04-01), Endoh
patent: 4506521 (1985-03-01), Asano et al.
patent: 4516408 (1985-05-01), Chiba
patent: 4802529 (1989-02-01), Sumitani et al.
patent: 4905894 (1990-03-01), Noguchi
patent: 5174365 (1992-12-01), Noguchi et al.

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