Automatic pressure regulator
OwnerJohn F. Taplininventor
Life of this patent
Estimating the term…
Abstract
An automatic pressure regulator of the rolling diaphragm type requiring but one single rolling diaphragm. The diaphragm is of the deep convolution type. The rolling wall of the diaphragm controls the effective cross-sectional area of an orifice means which, in turn, effects the regulation of pressure. The force created by the high pressure acts against a spring tending to move the rolling wall of the rolling diaphragm to the orifice closing position thereof. The effective area of the rolling wall of the rolling diaphragm is variable to compensate for variations of the force of the spring resulting from changes of its length.
Claims14
An automatic pressure regulator including in combination
- (a) housing means defining an inlet passageway and an outlet passageway and an inlet area adjacent said inlet passageway and an outlet area adjacent said outlet passageway;
- (b) a piston body arranged and movable inside said housing means, said piston body defining an additional passageway through said piston body allowing the flow of fluid from said inlet area to said outlet area of said housing means;
- (c) a deep convolution rolling diaphragm having a radially outer portion affixed to said housing means, a radially inner portion affixed to said piston body and a rolling wall interposed between said housing means and said piston body, one side of said rolling wall being acted upon by the pressure prevailing in said inlet area and the other side of said rolling wall being acted upon by the pressure prevailing in said outlet area, and said rolling wall being arranged to control the effective cross-sectional area of said additional passageway so as to control the flow of fluid from said inlet area through said piston body to said outlet area;
- (d) spring means interposed between said housing means and said piston body biasing said piston body to move in a direction tending to cause said rolling wall of said rolling diaphragm to reduce said effective cross-sectional area of said additional passageway;
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- (e) means for increasing the effective area of said rolling wall of said rolling diaphragm as said piston body moves against the action of said spring means.
An automatic pressure regulator including
- (a) a housing defining an inlet passageway and an outlet passageway;
- (b) a piston body movably arranged inside said housing and having aperture means defining an additional passageway through said piston body from said inlet passageway to said outlet passageway;
- (c) a rolling diaphragm having a radially outer portion affixed to said housing, a radially inner portion affixed to said piston body and a rolling wall arranged inside a toroidal gap left between said housing and said piston body and controlling the effective cross-sectional area of said additional passageway;
- (d) a spring interposed between said housing and said piston body biasing said piston body to move in one direction against the pressure of fluid admitted to said inlet passageway upon said rolling wall of said rolling diaphragm;
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- (e) means biasing said piston body to move in opposite direction against the action of said spring, said means including said rolling wall of said rolling diaphragm and means causing the effective area of said rolling wall of said rolling diaphragm to increase as said piston body means against the bias of said spring.
Dependencies are inferred from the claim text.