Self-regulating deicer valve

Details Self-regulating deicer valve Self-regulating deicer valve

1986-02-24

1988-04-05

Schwadron, Martin P.

Pumps

One fluid pumped by contact or entrainment with another

Jet

137114, 244134A, 417187, F04F 552, B64D 1516

Patent

active

047355549

ABSTRACT:
A self-regulating vacuum control valve with a needle valve operating in a narrow central bore that regulates the flow of pressurized air from a pressure source into such narrow central bore for passage and discharge from an enlarged bore. A vacuum is pulled in passageways in such enlarged bore which exert a vacuum pull on a control chamber and on one end of a diaphragm means. The diaphragm means is connected to the needle valve and has its one end subjected to atmospheric pressure. Such diaphragm and needle valve are spring biased to increase the air flow past such needle valve in opposition to the vacuum pull on such diaphragm. Such spring bias is adjustable to provide a predetermind vacuum pull on the control chamber that can be connected to a deicer pad for maintaining a predetermined vacuum pull thereon.

REFERENCES:
patent: 1636919 (1927-07-01), Miller
patent: 2457388 (1948-12-01), Lung
patent: 2642813 (1953-06-01), Woodruff et al.
patent: 2753138 (1956-07-01), MacIntyre
patent: 3845932 (1974-11-01), Fontaine
patent: 4089622 (1978-05-01), Anbel et al.
patent: 4228958 (1980-10-01), Perry
patent: 4482299 (1984-11-01), Eulass

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