Air conditioner operable in a room cooling mode and a room warmi

Details Air conditioner operable in a room cooling mode and a room warmi Air conditioner operable in a room cooling mode and a room warmi

1982-03-29

1984-11-13

Richter, Sheldon J.

Heat exchange

Movable heating or cooling surface

Rotary drum

62160, 622284, 622386, 623244, 62509, F25B 2900

Patent

active

044820089

ABSTRACT:
The disclosed airconditioner has a refrigerant compressor connected to a refrigerant circuit through a four-way valve in each of the room cooling mode and a first room warming mode of operation. The refrigerant circuit has an indoor heat exchanger, an externally heated heat exchanger, a piping, a first electromagnetic valve and an outdoor heat exchanger connected in series. A second electromagnetic valve is connected in parallel to the outdoor heat exchanger between the piping and the four-way valve to form the refrigerant circuit along with the indoor heat exchanger, the externally heated heat exchanger and the piping for the second room warming mode of operation. During the room cooling mode and first room warming mode of operation, the first electromagnetic valve is opened and the piping and the externally heated heat exchanger hold an amount of liquid refrigerant equal to the volume of the outdoor heat exchanger, while in the second room warming mode of operation in which the second electromagnetic valve and an electromagnetic valve connected across the compressor are open the outdoor heat exchange is filled with liquid refrigerant.

REFERENCES:
patent: 3529659 (1970-09-01), Trask
patent: 3563304 (1969-01-01), McGrath
patent: 3627031 (1971-10-01), Ware
patent: 3777508 (1973-12-01), Imabayashi et al.
patent: 4177649 (1979-12-01), Venema
patent: 4196595 (1980-04-01), Shaw
patent: 4333316 (1982-06-01), Stamp, Jr. et al.
patent: 4409796 (1983-10-01), Fisher

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