Automatic controlling device for maintaining a constant rate of

Details Automatic controlling device for maintaining a constant rate of Automatic controlling device for maintaining a constant rate of

1974-11-25

1976-05-25

Schwadron, Martin P.

Pipes and tubular conduits

With flow regulators and/or baffles

Restrictors

137504, 1375563, G05D 700

Patent

active

039586057

ABSTRACT:
The present invention relates to automatic control devices generally for the purpose, in the terminal equipment of an air-conditioning system which blows conditioned air, flowing thereinto through the duct from the central air conditioner, out into the room, of keeping the rate of flow at a certain fixed level. More specifically, the present invention relates to a new and improved type of automatic control device which is worked in a stabilized condition at as low wind pressure as possible and which is capable of blowing air out always at a certain prefixed rate of flow irrespective of fluctuations of the pressure inside the duct.

REFERENCES:
patent: 2577405 (1951-12-01), Cones
patent: 2890716 (1959-06-01), Werder
patent: 3000395 (1961-09-01), Waterfill
patent: 3179125 (1965-04-01), O'Day et al.

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