Refrigeration control circuit

Details Refrigeration control circuit Refrigeration control circuit

1974-11-15

1976-06-29

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62234, F25D 2108

Patent

active

039656926

ABSTRACT:
The electrical control panel for a refrigeration unit using single or three phase power. The control portion has an oil pressure safety switch, defrost timer, temperature controls and perhaps a refrigerant pressure control in conjunction with the normal internal overload circuit breakers for the compressor. After operation of the refrigeration unit for a period of time, a defrost control device cuts off the compressor and turns on the electric defrost heaters. As the evaporator coils are defrosted, defrost thermostats open the defrost heater supply circuits. When the current sensing relay senses that all the defrost heaters have been shut off via the defrost thermostats, a time delay relay will return the refrigeration unit to the normal refrigeration cycle. The same current sensing relay will prevent false triggering by the oil pressure safety switch if the compressor's internal overload circuit breaker opens.

REFERENCES:
patent: 2199426 (1940-05-01), Wolfert
patent: 2548324 (1951-04-01), Smith
patent: 3436929 (1969-04-01), Harbour
patent: 3439511 (1969-04-01), Christman

Affiliated with

Also associated with

Rating

Refrigeration control circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Refrigeration control circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Refrigeration control circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1268752