FLUID RELEASE VALVE USING FLEXIBLE FLUID PERMEABLE MEMBRANE

摘要

PROBLEM TO BE SOLVED: To provide a fluid release valve using a flexible fluid permeable membrane.SOLUTION: The present invention provides a gas release device that includes a reservoir of pressurized gas and a passageway from the reservoir to an outlet. There is an elastic gas permeable membrane in the passageway that allows gas release only via the membrane. A gas impermeable member is provided in the passageway and includes an interface positioned to contact the gas permeable membrane. The displacement of the gas permeable membrane is responsive to the pressure of the gas in the reservoir such that there is a greater interfacial contact between the gas impermeable member and the gas permeable membrane at a high pressure than at a low pressure to thereby vary the exposed cross sectional area of the permeable membrane available to the flow in an inverse relationship to the pressure.