Method and apparatus for reducing energy use by refrigeration do

Details Method and apparatus for reducing energy use by refrigeration do Method and apparatus for reducing energy use by refrigeration do

1997-03-25

1999-05-04

Wayner, William

Refrigeration

Processes

Defrosting or frost inhibiting

62150, 62275, F25D 2100, B60S 154

Patent

active

058990780

ABSTRACT:
A system is provided for reducing power consumption of door and frame heaters of refrigerating devices while maintaining protection against condensation. One or more condensation sensors are attached to the door and are monitored by control circuitry which controls power applied to the door or frame heater. Condensation on the sensor will increase the conductivity of the sensor, which is detected by the control circuitry. When condensation occurs, power is applied to the heater until the condensation is eliminated. The invention includes two different condensation sensor configurations.

REFERENCES:
patent: 3495416 (1970-02-01), Morrissey, Jr. et al.
patent: 3902040 (1975-08-01), Ikeda et al.
patent: 3939666 (1976-02-01), Bashark
patent: 4260876 (1981-04-01), Hochheiser
patent: 4261179 (1981-04-01), Dageford

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