Pressure responsive safety control for refrigerant compressor

Details Pressure responsive safety control for refrigerant compressor Pressure responsive safety control for refrigerant compressor

1982-07-30

1984-08-07

Tanner, Harry

Refrigeration

Automatic control

Time or program actuator

622283, 623234, G05D 2332, F25B 2700

Patent

active

044635737

ABSTRACT:
A compressor protector system is an air conditioning system that includes a compressor driven by an engine through an electromagnetic clutch. If the refrigerant charge is below the level necessary for proper compressor cooling and lubrication a pressure or temperature responsive switch cycles at an excessive rate. A digital counter adds the number of cycles occuring over a given time, compares the rate of switch pulses to a predetermined maximum and operates to disengage the clutch and signal the vehicle operator that corrective action to restore the refrigerant charge is required.

REFERENCES:
patent: 3298192 (1967-01-01), Morgan
patent: 4034570 (1977-07-01), Anderson et al.

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