Compression type refrigeration device

Details Compression type refrigeration device Compression type refrigeration device

1980-02-07

1982-06-01

Wayner, William E.

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

62228, F04B 4906

Patent

active

043325289

ABSTRACT:
The compression type refrigerating device having a compressor defining a pressure space and being driven by an asynchronous motor comprises a pressure sensitive switch arranged in a sealed housing communicating with the pressure space of the compressor and connecting in response to a predetermined pressure level in the housing an additional field coil in series with a main field coil of stator of the electromotor. In this manner the efficiency of the intermittently operating asynchronous driving motor is improved.

REFERENCES:
patent: 2229986 (1941-01-01), Page
patent: 2646204 (1953-07-01), Rosenschold
patent: 3898527 (1975-08-01), Cawley
patent: 3985467 (1976-10-01), Lefferson
patent: 4064420 (1977-12-01), Yuda et al.

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