Freeze element for A/C throttling valve

Details Freeze element for A/C throttling valve Freeze element for A/C throttling valve

1975-08-11

1976-12-28

Wayner, William E.

Automatic temperature and humidity regulation

Thermostatic

In fluid controlled

62217, 137 59, 236 98, H01M 472, F25B 4104

Patent

active

039997081

ABSTRACT:
A thermally responsive freeze type actuator for operating an air conditioning throttle valve. The actuator includes a rigid walled tubular portion which contains water and is attached to an axially extendable and contractible bellows portion. The bellows portion contains an immiscible fluid such as oil which floats on the water. The pressure forces created by the formation of ice in the tubular portion is transmitted to the oil by compression of one end of a hollow bladder member made of flexible material such as rubber which extends axially through the tubular portion and the bellows portion.

REFERENCES:
patent: 2453851 (1948-11-01), Miller
patent: 3480027 (1969-11-01), Noland
patent: 3798921 (1974-03-01), Scherer et al.

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