Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1981-12-28
1984-06-26
Schwadron, Martin P.
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
137102, 137528, G05D 1610
Patent
active
044560257
ABSTRACT:
A regulator is provided for controlling air flow at high volume at either low vacuum or low pressure levels. The regulator includes an accumulator chamber having a first opening for providing flow of air from the accumulator chamber to a plenum and a second opening to facilitate air flow from either a positive pressure pump or a vacuum pump to the accumulator chamber. A regulator chamber is provided adjacent to the accumulator chamber for controlling pressure in the accumulator chamber, the two chambers being separated by a piston which moves in response to relative pressure changes in the chambers. This movement is controlled by means of a pressure transducer connected to the regulator chamber which controls air pressure to the regulator chamber through a valve by means of a comparison circuit which senses any difference between the pressure in the accumulator chamber and the desired pressure.
In the preferred embodiment, a manifold plate at one end of the accumulator chamber is provided with the required ports and a pair of plugs which can be removably placed in selected ports to change the regulator from a pressure regulator to a vacuum regulator and vice versa.
REFERENCES:
patent: 2574414 (1949-08-01), Ragland
patent: 2984251 (1961-05-01), Quinby
patent: 3636969 (1972-01-01), Jacobellis
patent: 3774628 (1973-11-01), Norton
patent: 4006919 (1977-02-01), Neuman
patent: 4253480 (1981-03-01), Kessel
Schwadron Martin P.
Shay James R.
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