Fluid handling – Self-proportioning or correlating systems – Supply and exhaust type
Patent
1973-09-12
1976-02-10
Cohan, Alan
Fluid handling
Self-proportioning or correlating systems
Supply and exhaust type
13762565, 251129, F16K 3104
Patent
active
039372421
ABSTRACT:
A pressure control device for a flowing fluid medium is described which comprises a fluid inlet conduit structure and a fluid return conduit structure each of which conduit structures has a valve seat; a connecting structure for linkup with a fuel consuming device; and a movable valve member for controlling the cross sectional area of the outflow of fluid from the control device, wherein the movable valve member which is arranged between the valve seats of the inlet and return conduit structures, controls the cross sectional areas of flow through the inlet conduit structure and the return conduit structure, respectively, in opposite sense and is biased by a resetting force, and wherein the valve seat cross sectional area of the return conduit structure is smaller than that of the inlet conduit structure, whereby a force resulting from the inlet fluid pressure and the cross sectional flow area of the inlet conduit structure acts on the movable valve member in a direction causing reduction of fluid influx and is opposed by the resetting force as well as by a force resulting from the fluid pressure in the connecting structure and from the area difference between the valve seat across sectional areas of the inlet and the return conduit structures. The movable valve member is preferably a membrane, and an electromagnet or spring structure may be used to provide the resetting force.
REFERENCES:
patent: 2435076 (1948-01-01), Hall
patent: 3001549 (1961-09-01), Nelson
patent: 3022799 (1962-02-01), Padula
patent: 3529620 (1970-09-01), Leiber
patent: 3828818 (1974-08-01), Hunt
Cohan Alan
Greigg Edwin E.
Robert Bosch G.m.b.H.
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