G - Physics – 05 – D
Patent
G - Physics
05
D
341/27, 341/4
G05D 23/32 (2006.01) F25D 21/00 (2006.01) F25D 29/00 (2006.01)
Patent
CA 1315371
REFRIGERATION CONTROL SYSTEM WITH SELF-ADJUSTING DEFROST INTERVAL Abstract of the Disclosure A refrigeration control system with self-adjusting defrost interval is provided. The system includes en improved control circuit including an external comparator and a microprocessor having a compressor output drive function and a defrost output drive function. The comparator is linked with the microprocessor with circuit elements for detecting the the period of a defrost operation, comparing the time period with predetermined defrost period limits, generating an output control signal in response to a predetermined relationship between the time period and the limits, and adjusting the defrost interval in response to the control signal whereby the defrost operation is maintained within a preferred preselected time period.
529521
Beach Sammie C.
Bonicatto Damian G.
Jahr Richard T.
Jenski Leonard Wayne
Kasparek Edward F.
Cassan Maclean
White Consolidated Industries Inc.
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