Compressor crankcase heater control

Details Compressor crankcase heater control Compressor crankcase heater control

1991-12-12

1993-07-27

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62472, F25B 4302

Patent

active

052302229

ABSTRACT:
A crankcase heater control system for a refrigeration system includes a first temperature sensor for sensing the outdoor temperature, and, a second temperature sensor for sensing compressor discharge temperature. A controller is operatively connected to temperature sensors and the crankcase heater. When the ambient temperature falls below a first pre-determined temperature the controller compares the compressor discharge temperature to a second pre-determined temperature which is greater than the first pre-determined temperature and energizes the crankcase heater when the compressor discharge temperature falls below the second pre-determined temperature.

REFERENCES:
patent: 5012652 (1991-05-01), Dudley

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