Adaptive defrost control system for a refrigerator

Details Adaptive defrost control system for a refrigerator Adaptive defrost control system for a refrigerator

1982-07-28

1984-11-13

Tanner, Harry B.

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

62155, 62156, F25D 2106

Patent

active

044817851

ABSTRACT:
An adaptive demand defrost control system controls the length of an interval between defrost operations in accordance with the number and duration of compartment door-openings, the duration of a previous defrost operation as corrected by the temperature of the evaporator prior to defrost, and the length of time the compressor has been energized. A count is stored which is varied according to a decrementing schedule, with the decrementing schedule in turn being based upon a comparison of the corrected defrost duration with either a desired defrost duration or a range of desired defrost durations. A defrost operation is initiated when the count reaches a predetermined value. An alternative embodiment of the invention develops an indication of the ambient humidity and controls humidity-dependent apparatus in accordance with the indication.

REFERENCES:
patent: 2725196 (1955-11-01), Trittschuh
patent: 3460352 (1969-08-01), Lorenz
patent: 3518841 (1970-07-01), West, Jr.
patent: 3548609 (1970-12-01), Kusuda et al.
patent: 3759049 (1973-09-01), Bell et al.
patent: 4156350 (1979-05-01), Elliott et al.
patent: 4173871 (1979-11-01), Brooks
patent: 4227411 (1980-10-01), Abramovich
patent: 4251988 (1981-02-01), Allard et al.
patent: 4297852 (1981-11-01), Brooks
patent: 4327557 (1982-05-01), Clarke et al.
patent: 4328680 (1982-05-01), Stamp, Jr. et al.

Affiliated with

Also associated with

Rating

Adaptive defrost control system for a refrigerator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive defrost control system for a refrigerator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive defrost control system for a refrigerator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2354495