Adaptive defrost control for a refrigerator
Patent
·
OSTI ID:5930331
A control is described for a refrigeration device having cooling apparatus including an evaporator, defrosting apparatus for removing frost from the evaporator and means for energizing the defrosting apparatus at the end of a cooling cycle to initiate a defrost cycle, comprising: detecting means for detecting the rate of change of evaporator temperature during a defrosting cycle; determining means for determining the length of time the rate of change of evaporator temperature remains at substantially zero; and establishing means for establishing the duration of a subsequent cooling cycle in dependence upon the determined length of time.
- Assignee:
- Whirlpool Corp., Benton Harbor, MI
- Patent Number(s):
- US 4689965
- OSTI ID:
- 5930331
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
BUILDINGS
COMPUTERIZED CONTROL SYSTEMS
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
COOLING
DEFROSTING
EQUIPMENT
EVAPORATORS
REFRIGERATORS
TEMPERATURE CONTROL
THERMOSTATS
TIME DEPENDENCE
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
BUILDINGS
COMPUTERIZED CONTROL SYSTEMS
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
COOLING
DEFROSTING
EQUIPMENT
EVAPORATORS
REFRIGERATORS
TEMPERATURE CONTROL
THERMOSTATS
TIME DEPENDENCE