Fluid release valve using flexible fluid permeable membrane

Details Fluid release valve using flexible fluid permeable membrane Fluid release valve using flexible fluid permeable membrane

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 31/126 (2006.01) A23B 7/152 (2006.01) B65D 81/18 (2006.01) F16K 17/08 (2006.01)

Patent

CA 2664758

A gas release device that includes a reservoir of pressurised gas and a passageway from said 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 that includes an interface positioned to contact said gas permeable membrane. 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 higher gas pressure than at lower pressure to thereby vary the exposed cross sectional area of the permeable membrane available to the flow in an inverse relationship to pressure.

Dispositif de libération de gaz comprenant un réservoir de gaz sous pression et un passage entre ledit réservoir et une sortie. Une membrane souple perméable aux gaz disposée dans le passage constitue le seul point par lequel le gaz peut être libéré. Dans ce même passage est disposée une membrane imperméable aux gaz comprenant une interface positionnée pour entrer en contact avec ladite membrane perméable aux gaz. Comme le déplacement de cette membrane perméable aux gaz est fonction de la pression du gaz dans le réservoir, le contact interfacial entre la membrane imperméable au gaz et la membrane non imperméable au gaz augmente lorsque la pression s'accroît, ce qui fait la surface de la section transversale exposée de la membrane perméable disponible pour le flux selon une relation inverse à la pression.

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