Air-conditioning apparatus

Details Air-conditioning apparatus Air-conditioning apparatus

1988-12-21

1989-11-07

Wayner, William E.

Refrigeration

Automatic control

Selective heating or cooling

623246, 622284, F25B 1300

Patent

active

048783579

ABSTRACT:
A multiroom air conditioning apparatus includes an outdoor side unit having a compressor and an outdoor heat exchanger, and a plurality of room units having an indoor heat exchanger. A high-pressure gas pipe and a low-pressure gas pipe, connected to the compressor, are branched so that a high-side branch pipe and a low-side branch pipe are connected to the outdoor heat exchanger via outside valves. A liquid pipe through which a refrigerant passes from the high-pressure gas pipe is connected to the outdoor heat exchanger, and branched to provide liquid pipes. The indoor heat exchanger is connected to the branched liquid pipes via expansion device and to the high-side branch pipe and the low-side branch pipe via inside valves. By controlling the outside and inside valves, a selected room unit or units can be cooled or heated.

REFERENCES:
patent: 3234754 (1966-02-01), Quick
patent: 4441335 (1984-04-01), Bonne

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