Compressor-controlling device and method for air conditioner...

Details Compressor-controlling device and method for air conditioner... Compressor-controlling device and method for air conditioner...

2005-03-29

2005-03-29

Tanner, Harry B. (Department: 3744)

Refrigeration

Automatic control

Time or program actuator

C062S175000, C236S0010EA

Reexamination Certificate

active

06871505

ABSTRACT:
Disclosed are compressor-controlling device and method for an air conditioner comprising a plurality of compressors. In case several compressors selected from the plural compressors are stopped for a long period of time according to cooling or heating load, the refrigerant contained in a higher-pressure state inside of the stopped compressors moves toward a refrigerant pipe of a lower-pressure inlet port, and oil used to operate the compressors leaks toward the inlet port, thus lowering the oil level within the stopped compressors. Since the stopped compressors are operated during a second designated time when stopped time of the stopped compressors exceeds a first designated time, the stopped compressors are protected from damage due to poor lubrication.

REFERENCES:
patent: 5572878 (1996-11-01), Kapoor
patent: 5634345 (1997-06-01), Alsenz
patent: 5901559 (1999-05-01), Westermeyer et al.
patent: 405052384 (1993-03-01), None

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