Shut off valves and components thereof for ecology fuel return systems

Patent metadata

Field	Value
Publication number	US-9982602-B2
Application number	US-201514686888-A
Country	US
Kind code	B2
Filing date	Apr 15, 2015
Priority date	Apr 15, 2015
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

In at least one aspect of this disclosure, a shut off valve for an ecology fuel return system can include an inlet for receiving a fluid, an outlet for effusing the fluid, and a valve member configured to move between an open position such that the valve member allows fluid to effuse from the outlet and a closed position such that the valve member prevents fluid from effusing from the outlet. The valve member can include a pressure deflector configured to prevent fluid flow from biasing the valve member toward the closed position.

First claim

What is claimed is:

1. A shut off valve for an ecology fuel return system, comprising:
an inlet for receiving a fluid;
an outlet for effusing the fluid; and
a valve member configured to move between an open position such that the valve member allows fluid to effuse from the outlet and a closed position such that the valve member prevents fluid from effusing from the outlet, wherein the valve member includes a disk body and a pressure deflector extending from the disk body at an angle and configured to prevent fluid flow from biasing the valve member toward the closed position, wherein the valve member is slidably disposed in a valve chamber configured to retain the valve member and allow the valve member to move between the open position and the closed positon, wherein the valve chamber includes a guide structure for linearly guiding the valve member between the open and closed positions, wherein the pressure deflector is annular with the disk body; wherein the disk body includes a seal disposed on an outlet face thereof.

2. The shutoff valve of claim 1 , wherein the valve member includes a poppet.

3. The shutoff valve of claim 1 , wherein the valve member includes a guide post configured to be received by the guide structure.

4. The shutoff valve of claim 1 , wherein the valve member is configured to connect to an armature to be actuated by a float.

5. An ecology fuel return system for a turbomachine, comprising:
a reservoir;
a float disposed within the reservoir;
an armature operatively attached at one end to the float, wherein the armature is hinged about a fulcrum; and
a shutoff valve disposed in fluid communication with the reservoir, wherein the shutoff valve includes:
an inlet for receiving a fluid;
an outlet for effusing the fluid; and
a valve member configured to move between an open position such that the valve member allows fluid to effuse from the outlet and a closed position such that the valve member prevents fluid from effusing from the outlet, wherein the valve member includes a disk body and a pressure deflector extending from the disk body at an angle and configured to prevent fluid flow from biasing the valve member toward the closed position, wherein the valve member is operatively connected to the armature at a second end thereof, wherein the valve member is slidably disposed in a valve chamber configured to retain the valve member and allow the valve member to move between the open position and the closed positon, wherein the valve chamber includes a guide structure for linearly guiding the valve member between the open and closed positions, wherein the pressure deflector is annular with the disk body; wherein the disk body includes a seal disposed on an outlet face thereof.

6. The system of claim 5 , wherein the valve member includes a poppet.

7. The system of claim 5 , wherein the valve member includes a guide post configured to be received by the guide structure.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Carpenter Richard J
• Veilleux Jr Leo J
• Ribarov Lubomir A

Classifications

• 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

• F16K31/20

  actuating a lift valve · CPC title

• F16K39/022 Primary

  using balancing surfaces · CPC title

• F16K39/02

  for lift valves · CPC title

• F16K31/26

  with the valve guided for rectilinear movement and the float attached to a pivoted arm · CPC title