Pressure-regulating valves

Patent metadata

Field	Value
Publication number	US-2016273667-A1
Application number	US-201514664533-A
Country	US
Kind code	A1
Filing date	Mar 20, 2015
Priority date	Mar 20, 2015
Publication date	Sep 22, 2016
Grant date	—

Abstract

A multi-bend control circuit for fluid communication with an outlet port of a valve includes a first circuit leg extending in a first direction and a second circuit leg extending at an angle from the first circuit leg in a second direction. A third circuit leg extends at an angle from the second circuit leg in a third direction different from the second direction. A sense line tap is in fluid communication with at least one of the first, second or third legs.

First claim

1 . A multi-bend control circuit for fluid communication with an outlet port of a valve, the multi-bend control circuit comprising:
a first circuit leg extending in a first direction; a second circuit leg extending at an angle from the first circuit leg in a second direction; a third circuit leg extending at an angle from the second circuit leg in a third direction different from the second direction, wherein the first, second and third circuit legs form a sigmoidal flow path; and a sense line tap in fluid communication with at least one of the first, second or third legs.

2 . A multi-bend control circuit as recited in claim 1 , wherein the second direction is perpendicular to the first direction.

3 . A multi-bend control circuit as recited in claim 1 , wherein the third direction is perpendicular to the second direction.

4 . A multi-bend control circuit as recited in claim 1 , wherein the third direction is at an angle with respect to the first direction.

5 . A multi-bend control circuit as recited in claim 1 , wherein the third direction is oblique with respect to a plane defined by the first and second directions.

6 . A multi-bend control circuit as recited in claim 1 , wherein a portion of the second circuit leg extends beyond the intersection of the second circuit leg and the third circuit leg.

7 . A multi-bend control circuit as recited in claim 1 , wherein the first circuit leg has an inlet, and wherein the sense line tap is in fluid communication with at least one of the first, second or third legs at a point that has a pressure less than that of the inlet of the first circuit leg.

8 . A pressure valve comprising:
a valve body having a first end and a second end defining a longitudinal axis therebetween, the valve body including an inlet port, an outlet port and a sense port, wherein all ports are in fluid communication with the valve body to regulate pressure at the outlet port based on pressure at the sense port; a multi-bend control circuit in fluid communication with the outlet port and the sense port, wherein the multi-bend control circuit includes:
a first circuit leg extending from the outlet port in a first direction;
a second circuit leg extending at an angle from the first circuit leg in a second direction;
a third circuit leg extending at an angle from the second circuit leg in a third direction different from the second direction, wherein the first, second and third circuit legs form a sigmoidal flow path;
a sense line tap in fluid communication with at least one of the first, second or third legs; and
a sense line fluidly connecting the sense port and the sense line tap.

9 . A pressure valve as recited in claim 8 , wherein the sense line tap is in fluid communication with at least one of the first, second or third legs at a point that has a pressure less than that of the outlet port.

10 . A pressure valve as recited in claim 8 , wherein the second direction is perpendicular to the first direction.

11 . A pressure valve as recited in claim 8 , wherein the third direction is perpendicular to the second direction.

12 . A pressure valve as recited in claim 8 , wherein the third direction is at an angle with respect to the first direction.

13 . A pressure valve as recited in claim 8 , wherein the third direction is in a plane parallel to and off set from that of the first direction.

14 . A pressure valve as recited in claim 8 , wherein a portion of the second circuit leg extends beyond the intersection of the second circuit leg and the third circuit leg.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Rickis Aaron F
• Marconi Gary R

Classifications

• G05D16/02 Primary

  Modifications to reduce the effects of instability, e.g. due to vibrations, friction, abnormal temperature, overloading or imbalance · CPC title

• F16K17/02 Primary

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

• G05D16/2013

  using throttling means as controlling means · CPC title