Inline pressure regulating valve assembly with inlet pressure bias

Patent metadata

Field	Value
Publication number	US-9849992-B2
Application number	US-201615161404-A
Country	US
Kind code	B2
Filing date	May 23, 2016
Priority date	May 23, 2016
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

An assembly includes a first enclosed flexible pressure chamber. A first extension arm extends from a first endwall of the first enclosed flexible pressure chamber. A second enclosed flexible pressure chamber includes a second extension arm extending from a second endwall of the second enclosed flexible pressure chamber. A lever arm is disposed on a pivot. A first end of the lever arm is attached to the first extension arm and a second end of the lever arm is attached to the second extension arm. A variable restriction element is connected to the second end of the lever arm.

First claim

The invention claimed is:

1. An assembly comprising:
a first enclosed flexible pressure chamber with a first extension arm extending from a first endwall of the first enclosed flexible pressure chamber, wherein the assembly is fluidly connected to a regulating valve with a regulating valve element, wherein the first flexible pressure chamber is fluidly connected to an inlet of the regulating valve;
a second enclosed flexible pressure chamber with a second extension arm extending from a second endwall of the second enclosed flexible pressure chamber;
a lever arm disposed on a pivot, wherein a first end of the lever arm is attached to the first extension arm, and wherein a second end of the lever arm is attached to the second extension arm; and
a variable restriction element connected to the second end of the lever arm.

2. The assembly of claim 1 , wherein the variable restriction element comprises:
a pintle.

3. The assembly of claim 1 , wherein the second flexible pressure chamber is fluidly connected to an outlet of the regulating valve.

4. The assembly of claim 1 , wherein the regulating valve is fluidly connected to an anti-icing system for a nacelle inlet of an aircraft engine.

5. The assembly of claim 1 , wherein the variable restriction element comprises a pintle, and further comprising:
a solenoid valve fluidly connected to the pintle and to a pressure chamber of the regulating valve.

6. The assembly of claim 5 , wherein the solenoid valve is electrically connected to a full authority digital engine control of an aircraft.

7. The assembly of claim 5 , wherein the regulating valve element comprises:
a hole on a first face of the valve element facing the inlet of the regulating valve.

8. The assembly of claim 1 , wherein the variable restriction element comprises a pintle, and further comprising:
a solenoid valve fluidly connected to the pintle, to a pressure chamber of the regulating valve, and to the inlet of the regulating valve.

9. A method of regulating pressure of a fluid in an assembly, the method comprising:
biasing a fluid inlet pressure of a regulating valve, wherein biasing the fluid inlet pressure comprises:
receiving fluid in a first flexible pressure chamber;
exerting a first force onto the first flexible pressure chamber from the fluid;
actuating a lever arm attached to a first extension arm connected to the first flexible pressure chamber;
actuating a pintle connected to the lever arm;
adjusting an amount of the fluid released into an ambient environment from the assembly;

changing a fluid servo pressure within a pressure chamber of the regulating valve;
modulating a regulating valve element of the regulating valve; and
adjusting a fluid outlet pressure of the fluid flowing out of an outlet of the regulating valve.

10. The method of claim 9 , wherein actuating the lever arm further comprises:
receiving the outlet pressure in a second flexible pressure chamber;
exerting a second force onto the second flexible pressure chamber; and
applying a moment balance to the lever arm about a pivot upon which the lever arm is attached.

11. The method of claim 9 , further comprising:
biasing the lever arm by adjusting a spring force of a first spring element connected to a first end of the lever arm.

12. The method of claim 9 , further comprising:
energizing a solenoid valve which actuates a solenoid valve element of the solenoid valve.

13. The method of claim 12 , further comprising:
controlling the solenoid valve with an electrical signal from a full authority digital engine control.

14. An assembly comprising:
a regulating valve with an inlet;
a controller fluidly connected to the inlet of the regulating valve, wherein the controller comprises:
a first enclosed flexible pressure chamber;
a second enclosed flexible pressure chamber fluidly connected to an outlet of the regulating valve;
a lever arm disposed on a pivot;
a first end of the lever arm, wherein the first end of the lever arm is connected to a first extension arm extending from a first endwall of the first enclosed flexible pressure chamber;
a second end of the lever arm, wherein the second end of the lever arm is connected to a second extension arm extending from a second endwall of the second enclosed flexible pressure chamber;

a pintle connected to the second end of the lever arm; and
a solenoid valve fluidly connected to the pintle and to a pressure chamber of the regulating valve.

15. The assembly of claim 14 , wherein the regulating valve is fluidly connected to an anti-icing system for a nacelle inlet of an aircraft engine.

16. The assembly of claim 14 , wherein at least one of the first enclosed flexible pressure chamber and the second enclosed flexible pressure chamber comprise:
a bellows with rigid endwalls.

17. The assembly of claim 14 , wherein the solenoid valve is fluidly connected to the inlet of the regulating valve.

18. The assembly of claim 17 , wherein the regulating valve element comprises:
a hole on a first face of the valve element facing the inlet of the regulating valve.

Assignees

• United Technologies Corp

Inventors

• Goodman Robert
• Zheng Zhijun
• Greenberg Michael D

Classifications

• F01D25/02

  De-icing means for engines having icing phenomena · CPC title

• F01D17/141

  by means of shiftable members or valves obturating part of the flow path · CPC title

• B64D2033/0233

  comprising de-icing means · CPC title

• F16K17/02

  opening on surplus pressure on one side; closing on insufficient pressure on one side (check valves F16K15/00) · CPC title

• F02C7/047 Primary

  Heating to prevent icing · CPC title