Refrigeration evaporators with ice detectors

Details Refrigeration evaporators with ice detectors Refrigeration evaporators with ice detectors

1974-08-26

1977-07-26

Wayner, William E.

Refrigeration

With indicator or tester

Atmospheric condensation accumulation, e.g., frost

62140, 340234, F25D 2104

Patent

active

040374270

ABSTRACT:
A refrigeration evaporator with a drain pan which contains a heated temperature sensitive element for distinguishing between the abnormal condition of water or ice in the drain pan and the normal condition of cold air there. The distinguishing action of the element takes place because the heated element is warmer in the presence of air than in the presence of moisture. An alarm or signal, for alerting operating or service personnel, responds to the temperature of the sensor.

REFERENCES:
patent: 2071148 (1937-02-01), Weisberg et al.
patent: 2269019 (1942-01-01), Hall
patent: 2505201 (1950-04-01), Peterson
patent: 3224216 (1965-12-01), Crouch
patent: 3285275 (1966-11-01), Couffer, Jr. et al.
patent: 3358467 (1967-12-01), Hickox et al.

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