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US 6,211,760 B1Granted
Solenoid valve
AssigneeDanfoss A/S
InventorChristian Hammerich
Life of this patent
Estimating the term…
Abstract
A solenoid valve comprising a coil surrounding a guide for an armature, the armature being movable in the guide through magnetising of the coil or by means of a return mechanism, and a valve seat co-operating with a closing member for selective opening or closing of a valve opening through the valve seat controlled by the armature movement. As the closing member is a separate device in relation to the armature, which closing member is activated by the armature movement to a rocking movement around a contact point with the valve seat, an normally open or normally closed solenoid is obtained.
Claims12
Normally open solenoid valve comprising:
- a coil surrounding a guide,
- an armature located in the guide,
- a return spring extending between the armature and a bottom end of the guide,
- a valve seat located at a valve opening,
- a closing member located between the armature and the valve seat,
- a closing spring extending between the armature and the closing member,
- the armature being movable towards the bottom end of the guide by energization of the coil,
- the return spring biasing the armature away from the bottom end of the guide, when the coil is deenergized,
- the closing member being urged towards the valve seat by the closing spring,
- the valve seat co-operating with the closing member for selectively, controlled by the movement of the armature, opening or closing the valve opening,
- the closing member co-operating with the armature, when the coil is deenergized, by means of a projecting edge at a point radially offset in relation to the valve seat centre, such that the closing member is activated by the movement of the armature to making a rocking movement with respect to a rolling contact/touching point between the closing member and the valve seat.
8 more elements
Dependencies are inferred from the claim text.