Aspirator integrated pressure relief valve and vent valve assembly for an inflation system

Patent metadata

Field	Value
Publication number	US-10704568-B2
Application number	US-201816153156-A
Country	US
Kind code	B2
Filing date	Oct 5, 2018
Priority date	Feb 15, 2018
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A valve assembly for an inflation system that includes a pressure relief valve and a vent valve. The pressure relief valve has a pressure relief housing and a pressure relief valve poppet. The pressure relief housing defines a first pressure relief cavity that is disposed between a first end wall defining a first flow port and a first wall defining a passageway and a second pressure relief cavity disposed between the first wall and a second wall. The pressure relief valve poppet is movably disposed within the first pressure relief cavity and the second pressure relief cavity. The vent valve has a vent housing and a vent valve poppet. The vent housing defines a vent cavity that is disposed between the second wall defining a vent flow port and a second end wall. The vent valve poppet is movably disposed within the vent cavity.

First claim

What is claimed is:

1. An inflation system, comprising:
an aspirator having an aspirator body defining an outlet fluidly connected to an inflatable structure, a vent port, and an inlet fluidly connected to a pressure source; and
a valve assembly fluidly connected to the aspirator body through the vent port, the valve assembly comprising:
a pressure relief valve, having:
a pressure relief housing defining a first pressure relief cavity and a second pressure relief cavity, and
a pressure relief valve poppet movably disposed within the first pressure relief cavity and the second pressure relief cavity, and

a vent valve, having:
a vent housing defining a vent cavity, and
a vent valve poppet movably disposed within the vent cavity.

2. The inflation system of claim 1 , wherein the pressure relief valve poppet includes a first head disposed within the first pressure relief cavity, a second head having a radial seal disposed within the second pressure relief cavity, and a pressure relief valve stem extending between the first head and the second head.

3. The inflation system of claim 2 , wherein the pressure relief valve housing includes a first end wall defining a first flow port and a first wall defining a passageway through which the pressure relief valve stem extends, the first wall being disposed between the first pressure relief cavity and the second pressure relief cavity.

4. The inflation system of claim 3 , further comprising: a first biasing member extending between the first wall and the first head and arranged to bias the pressure relief valve poppet towards a closed position.

5. The inflation system of claim 4 , wherein the pressure relief housing defines a first vent port that is fluidly connected to the first pressure relief cavity.

6. The inflation system of claim 4 , wherein the pressure relief housing defines a first charge port that is fluidly connected to the second pressure relief cavity and the pressure source.

7. The inflation system of claim 6 , wherein at least one of the pressure relief valve housing and the vent housing includes a second wall that extends between the second pressure relief cavity and the vent cavity.

8. The inflation system of claim 7 , wherein the vent housing includes a second end wall that is spaced apart from the second wall.

9. The inflation system of claim 8 , further comprising: a second biasing member extending between the second end wall and a valve head having another radial seal of the valve poppet.

10. The inflation system of claim 9 , wherein the valve head is disposed within the vent cavity.

11. The inflation system of claim 9 , wherein the second wall defines a vent flow port.

12. The inflation system of claim 11 , wherein the vent housing defines a second vent port.

13. The inflation system of claim 12 , wherein the vent housing defines a second charge port that is fluidly connected to the pressure source.

14. The inflation system of claim 13 , wherein responsive to a fluid flow from the pressure source through at least one of the first charge port and the second charge port, the first head is biased towards the first end wall to block the first flow port and the vent valve is biased towards the second wall to vent a fluid pressure from the second pressure relief cavity.

15. The inflation system of claim 13 , wherein responsive to a decrease in a fluid flow from the pressure source through at least one of the first charge port and the second charge port, the first head moves away from the first end wall and the second biasing member urges the valve head away from the second wall.

Assignees

• Goodrich Corp

Inventors

• John Poly Puthur
• Anavadiya Priyank

Classifications

• F04F5/16

  displacing elastic fluids · CPC title

• B64D25/14

  Inflatable escape chutes · CPC title

• F16K17/105 Primary

  using choking or throttling means to control the fluid operation of the main valve · CPC title

• A62B1/20

  by making use of sliding-ropes, sliding-poles or chutes, e.g. hoses, pipes, sliding-grooves, sliding-sheets · CPC title

• F04F99/00

  Subject matter not provided for in other groups of this subclass · CPC title