US 4,061,160 AGranted

Control valve

AssigneeAir Products and Chemicals, Inc.

InventorsJames C. Kashmer, Charles R. Tobin

Life of this patent

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Abstract

A fluid control valve being a combination of a needle valve and a gate valve disposed in a manifold sleeve having an inlet, a sensor outlet and a fluid outlet. The control valve is so constructed that the gate valve controls fluid flow through the inlet and the needle valve meters fluid flow through the outlet. Simultaneously, upon opening of the gate valve and needle valve and at all times when fluid is flowing through the control valve, fluid in the form of a reference pressure is present at the sensor oulet. Control valves according to the present invention are ideally suited for use in anesthesia machines for dispensing oxygen gas into the patient breathing circuit.

Claims12

Dependent claims

A control valve comprising:

a manifold sleeve including a fluid inlet, a sensor outlet and a fluid outlet all of which link the interior of the manifold sleeve to the exterior thereof, said sleeve having a proximal and a distal end with the fluid inlet being located adjacent the distal end;
a hollow plug mounted in the distal end of said sleeve to seal it, the interior of said plug being in concentric alignment with the interior of said sleeve, said plug including a portion which extends longitudinally into the interior of the sleeve;
a hollow valve housing mounted on the proximal end of said sleeve to seal it, the interior of said housing being in concentric alignment with the interior of said sleeve;
a first valve member, generally tubular in cross-section, which is reciprocally and concentrically mounted within said sleeve, in juxtaposition with the interior walls thereof, said valve member terminating proximate said fluid inlet in a valve surface, said valve member also including a radial passageway proximate each of said sensor and fluid outlets;
a seating surface mounted on said longitudinally extending portion of said plug, which acts in conjunction with said valve surface and which, at one extreme of reciprocation of said first valve member, completely blocks flow through said inlet and which, at the other extreme of reciprocation, permits maximum flow;
a second valve member, mounted on said first valve member and linked thereto, for reciprocation therewith, said second member having a proximal portion extending into and mounted in said valve housing, and a distal axially extending tapered valve which terminates within the tubular portion of said first valve member;
a longitudinally extending valve slider mounted reciprocally and concentrically within said first valve member, said slider including, at one end, a seat portion which mates with the tapered valve of said second valve member to control flow rate to said fluid outlet, and a terminal portion at the other end which is retained in the hollow plug, said valve slider further including passageways linking both said fluid inlet and said sensor outlet with said seat portion;
means for reciprocating the combination if said first and second valve members with respect to said manifold sleeve, between predetermined limits;
and
means for reciprocally positioning the valve slider with respect to the first valve member to adjust the spacing between the tapered valve and the seat portion of said valve slider;
whereby whenever there is flow through the fluid inlet, the passageways in the valve slider providing a hydraulic control pressure at said sensor outlet and fluid to said seat portion for deliveryat adjustable flow rate to said fluid outlet.

8 more elements

A control valve comprising in combination:

a manifold sleeve having a proximal end and a distal end and including a fluid inlet, a sensor outlet and fluid outlet therebetween all of which link the interior of the manifold sleeve to the exterior thereof:
a hollow plug closing the distal end of said sleeve to seal it, the interior of said plug being in concentric alignment with the interior of said sleeve, said plug terminating in a valve seat extending into the interior of the sleeve;
a hollow valve housing mounted on the proximal end of said sleeve to seal it, the interior of said housing being in concentric alignment with the interior of said sleeve;
a first valve member, generally tubular in cross-section, which is reciprocally and concentrically mounted within said sleeve, said valve member terminating in a valve surface proximate said fluid inlet, said valve member also including a passageway proximate each of said sensor and fluid outlets, said seating surface and said valve seat cooperatively disposed in said manifold so that at one extreme of reciprocation said first valve member completely blocks flow through said inlet and at the other extreme of reciprocation, permits maximum flow through said inlet;
a second valve member, mounted on said first valve member and linked thereto for reciprocation therewith, said second member having a proximal portion extending into and mounted in said valve housing, and a distal axially extending tapered valve which terminates within the tubular portion of said first valve member;
a longitudinally extending valve slider mounted reciprocally and concentrically within said first valve member, said slider including, at one end, a seat portion which mates with the tapered valve of said second valve member to control flow rate to said fluid outlet, and a terminal portion at the other end which is retained in the hollow plug, said valve slider further including passageways linking both said fluid inlet and said sensor outlet with said seat portion;
said slider being adjustable to vary the spacing between the tapered valve and the seat portion of said slider;
and
means for reciprocating the combination of said first and second valve members with respect to said manifold sleeve, between predetermined limits;
and
whereby whenever there is flow through the fluid inlet, the passageways in the valve slider provide a hydraulic control pressure at said sensor outlet and fluid to said seat portion of such slider for delivery fluid outlet at a flow rate determined by the position of said tapered valve.

8 more elements

Dependencies are inferred from the claim text.

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Abstract

A control valve comprising:

a manifold sleeve including a fluid inlet, a sensor outlet and a fluid outlet all of which link the interior of the manifold sleeve to the exterior thereof, said sleeve having a proximal and a distal end with the fluid inlet being located adjacent the distal end;
a hollow plug mounted in the distal end of said sleeve to seal it, the interior of said plug being in concentric alignment with the interior of said sleeve, said plug including a portion which extends longitudinally into the interior of the sleeve;
a hollow valve housing mounted on the proximal end of said sleeve to seal it, the interior of said housing being in concentric alignment with the interior of said sleeve;
a first valve member, generally tubular in cross-section, which is reciprocally and concentrically mounted within said sleeve, in juxtaposition with the interior walls thereof, said valve member terminating proximate said fluid inlet in a valve surface, said valve member also including a radial passageway proximate each of said sensor and fluid outlets;
a seating surface mounted on said longitudinally extending portion of said plug, which acts in conjunction with said valve surface and which, at one extreme of reciprocation of said first valve member, completely blocks flow through said inlet and which, at the other extreme of reciprocation, permits maximum flow;
a second valve member, mounted on said first valve member and linked thereto, for reciprocation therewith, said second member having a proximal portion extending into and mounted in said valve housing, and a distal axially extending tapered valve which terminates within the tubular portion of said first valve member;
a longitudinally extending valve slider mounted reciprocally and concentrically within said first valve member, said slider including, at one end, a seat portion which mates with the tapered valve of said second valve member to control flow rate to said fluid outlet, and a terminal portion at the other end which is retained in the hollow plug, said valve slider further including passageways linking both said fluid inlet and said sensor outlet with said seat portion;
means for reciprocating the combination if said first and second valve members with respect to said manifold sleeve, between predetermined limits;
and
means for reciprocally positioning the valve slider with respect to the first valve member to adjust the spacing between the tapered valve and the seat portion of said valve slider;
whereby whenever there is flow through the fluid inlet, the passageways in the valve slider providing a hydraulic control pressure at said sensor outlet and fluid to said seat portion for deliveryat adjustable flow rate to said fluid outlet.

8 more elements