Valve assemblies

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 31/04 (2006.01) F16K 31/06 (2006.01) F16K 31/10 (2006.01) F16K 31/40 (2006.01) F16K 39/02 (2006.01)

Patent

CA 2736513

An electronically actuatable valve assembly having a primary face seating valve, including a primary valve member, and a secondary valve, including a secondary valve member. The secondary valve opens before the primary valve to equilibrate pressure across the primary valve member and thereby facilitate opening of the primary valve member. The secondary valve is coupled to an armature which moves from a first position to a second position, in use, attracted by an electromagnet. The coupling between the armature and the secondary valve is configured to enable the armature to begin to move from the first position without movement of the secondary valve. The armature has therefore moved from the first position, closer to the electromagnet, when the secondary valve is opened by way of the forces exerted through the coupling between the armature and the secondary valve member, and so a greater force can be exerted to open the secondary valve than would be the case if the secondary valve member was fixedly coupled to the armature.

L'invention porte sur un ensemble soupape qui peut être actionné de manière électronique, ayant une soupape à siège de face principale, comprenant un élément de soupape principal, et une soupape secondaire, comprenant un élément de soupape secondaire. La soupape secondaire s'ouvre avant la soupape principale de façon à équilibrer la pression à travers l'élément de soupape principal et à faciliter louverture de cette dernière. La soupape secondaire est accouplée à une armature qui se déplace à partir d'une première position vers une seconde position, lors de l'utilisation, attirée par un électroaimant. L'accouplement entre l'armature et la soupape secondaire est configuré pour permettre à l'armature de commencer à se déplacer à partir de la première position sans mouvement de la soupape secondaire. L'armature se déplace ainsi à partir de la première position, plus près de l'électroaimant, lorsque la soupape secondaire est ouverte au moyen des forces exercées par l'intermédiaire de laccouplement entre l'armature et l'élément de soupape secondaire, et il peut ainsi être exercé une force pour ouvrir la soupape secondaire plus en grand que dans le cas où l'élément de soupape secondaire serait accouplé de façon fixe à l'armature.

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