Refrigeration – Automatic control – By accumulation on freezing surface – e.g. – ice
Patent
1978-11-03
1981-02-03
Wayner, William E.
Refrigeration
Automatic control
By accumulation on freezing surface, e.g., ice
340580, F25D 2102, G08B 1902
Patent
active
042480523
ABSTRACT:
A sensor for detecting changes in the rate of flow of a gaseous stream by sensing changes of temperature up and down stream of a single heat source. The invention finds application as a frost sensor for use in a defrost system.
REFERENCES:
patent: 3107499 (1963-10-01), Jokela
patent: 3250083 (1966-05-01), Orth
patent: 3374643 (1968-03-01), Thorner
Adams Harold W.
Robertshaw Controls Company
Tanner Harry
Wayner William E.
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