Air conditioner

Details Air conditioner Air conditioner

1998-11-09

2000-02-15

Bennett, Henry

Refrigeration

Processes

Condensing and evaporating

621963, 62472, 62503, 62DIG22, F25D 1500

Patent

active

060239352

ABSTRACT:
An air conditioner has a refrigeration circuit formed by sequentially connecting a compressor 1, a condenser 2, an electronic expansion valve 4 and an evaporator 7 by pipes (6, 10). A compressor bypass pipe 12 is provided to connect an outlet of the evaporator 7 with an inlet of the condenser 2. A first on-off valve 11 is located in the bypass pipe 12. The air conditioner is controlled to switch to either a forced circulation operation or a natural circulation operation. In the forced circulation operation, the first on-off valve 11 is closed, the expansion valve 4 is opened to a first degree to allow refrigerant to pass therethrough, and the compressor 1 is operated in a running state. In the natural circulation operation, the first on-off valve 11 is opened, the expansion valve 4 is opened to a second degree, different from the first degree, to allow refrigerant to pass therethrough, and the compressor 1 is stopped.

REFERENCES:
patent: 4904165 (1990-02-01), Fraser, Jr. et al.

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