Rotary adjustable orifice plate valve

Patent metadata

Field	Value
Publication number	US-10371267-B2
Application number	US-201715411836-A
Country	US
Kind code	B2
Filing date	Jan 20, 2017
Priority date	Jan 20, 2017
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

A valve with a rotationally adjustable flow area can include a first member defining a first wall having a first opening therein, and a second member defining a second wall having a second opening therein, the first member being rotatable relative to the second member, and flow area through the valve being defined by fluidic communication between the first opening and the second opening that varies with relative rotational position between the first member and the second member.

First claim

What is claimed is:

1. A rotary adjustable plate orifice valve, comprising:
a housing including a first fluid path opening and a second fluid path opening;
a sleeve disposed at least partially within the housing and having a sleeve opening defined by a cam surface; and
a spool disposed at least partially within the sleeve and the housing and configured to rotate relative to the sleeve, the spool including:
a plate face that abuts the cam surface; and
a plate orifice defined in the plate face and configured to be positioned to be partially in fluid communication with the sleeve opening and to be partially blocked by the cam surface, wherein an amount of open area of the plate orifice that is in fluid communication with the sleeve opening changes as a function of a rotational position of the orifice relative to the cam surface;

wherein fluid can flow between the first fluid path and the second fluid path through the plate orifice, wherein the spool extends through the sleeve opening to contact the cam surface.

2. The valve of claim 1 , wherein the sleeve further includes radial openings for receiving pressure from the second fluid path at the sleeve opening.

3. The valve of claim 2 , wherein a filter is disposed over the radial openings.

4. The valve of claim 1 , wherein the cam surface defines a spiral shape.

5. The valve of claim 1 , wherein the plate orifice is circular in cross-sectional shape.

6. The valve of claim 1 , wherein the spool includes a face seal in sealing communication with the housing.

7. The valve of claim 1 , further comprising a ring seal disposed around an outer diameter of the sleeve in sealing communication with the housing.

8. The valve of claim 1 , wherein the spool includes a threaded end opposite the plate face.

9. The valve of claim 8 , further comprising a lock nut in threaded connection with the threaded end of the spool and configured to tighten the plate face of the spool against the cam surface of the sleeve.

10. The valve of claim 9 , wherein the spool includes a ring seal disposed in sealing communication with an inner diameter of the sleeve.

11. The valve of claim 9 , further comprising a cap configured to connect to the sleeve at an opposite end relative to the cam surface to cover the threaded end of the spool and the lock nut disposed on the threaded end.

12. The valve of claim 1 , wherein flow from the first fluid path is filtered flow according to a filtration hierarchy for fuel control.

13. A method, comprising:
rotating a spool of a valve such that a plate orifice defined in a plate face thereof is positioned relative to a cam surface of a sleeve at a predetermined rotational position to block a predetermined amount of flow area of the plate orifice, the cam surface defines a sleeve opening, wherein the spool extends through the sleeve opening to contact the cam surface.

14. The method of claim 13 , further comprising locking the spool in place after position the spool and the plate orifice in the predetermined rotational position.

15. The method of claim 13 , wherein locking the spool includes tightening a lock nut threadably engaged with a threaded end of the spool against an inner surface of the sleeve to compress the plate face of the spool against the cam surface.

16. A valve with a rotationally adjustable flow area, comprising:
a first member defining a first wall having a first opening therein; and
a second member defining a second wall having a second opening therein, the first member being rotatable relative to the second member, and flow area through the valve being defined by fluidic communication between the first opening and the second opening that varies with relative rotational position between the first member and the second member, wherein the first member extends through the second opening to contact the first and second walls together.

17. The valve of claim 16 , further comprising a housing including a first fluid path opening and a second fluid path opening, wherein the first member includes a sleeve disposed at least partially within the housing, wherein the first wall includes a cam surface, wherein the first opening is a sleeve opening defined by the cam surface, and wherein the second member includes a spool disposed at least partially within the sleeve and the housing and configured to rotate relative to the sleeve, wherein the second wall is a plate face of the spool that abuts the cam surface, and wherein the second opening includes a plate orifice defined in the plate face and positioned to be partially in fluid communication with the opening and to be partially blocked by the cam surface, wherein an amount of open area of the orifice that is in fluid communication with the sleeve opening changes as a function of a rotational position of the orifice relative to the cam surface.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Coretto August M
• Ballard Peter M
• Rickis Aaron F

Classifications

• F16K3/08

  with circular plates rotatable around their centres · CPC title

• F05D2250/90

  Variable geometry · CPC title

• F02C7/232 Primary

  Fuel valves {(control of fuel supply by means of fuel metering valves F02C9/263)}; Draining valves or systems (valves in general F16K) · CPC title

• F05D2250/411

  in rotation · CPC title

• F05D2250/36

  in inner-outer relationship, e.g. shaft-bearing arrangements · CPC title