Control circuit unit for a variable capacity compressor incorpor

Details Control circuit unit for a variable capacity compressor incorpor Control circuit unit for a variable capacity compressor incorpor

1989-02-03

1991-05-28

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

307254, 361154, F25B 100

Patent

active

050183664

ABSTRACT:
A control circuit unit for controlling the energization of a solenoid of a solenoid-operated capacity control unit incorporated in a a variable capacity compressor, typically, a variable capacity wobble plate type refrigerant compressor for a car air-conditioner, having a switching unit for establishing an electric conduction of the energizing circuit of the solenoid when the solenoid-operated valve is actuated for changing the compressor capacity, and an electric energizing voltage control circuit used to apply a high electric starting voltage to the solenoid emergizing circuit at a predetermined initial starting time of the solenoid, and a low electric retaining voltage required for retention of the energization of the solenoid valve after the predetermined starting time has elapsed.

REFERENCES:
patent: 3577040 (1971-05-01), Campbell, Jr.
patent: 3614543 (1971-10-01), Dick
patent: 4310868 (1982-01-01), Lille et al.
patent: 4586874 (1986-05-01), Hiraga et al.
patent: 4747754 (1988-05-01), Fujii et al.
Basic Electronics; Bureau of Naval Personnel, 6/1955, pp. 58-60.

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