초록 ▼

A bistable solenoid valve with an armature in the form of a movable core disposed within a core guide tube. The armature is resettable by a spring force with one single electromagnetic winding surrounding the tube. The movable core is mechanically coupled with a locking mechanism which is alternatel

A bistable solenoid valve with an armature in the form of a movable core disposed within a core guide tube. The armature is resettable by a spring force with one single electromagnetic winding surrounding the tube. The movable core is mechanically coupled with a locking mechanism which is alternately engageable and releasable. A second locking member is longitudinally displaceable against a first member and, in its lifted position, is rotatable through a preset angle. The two locking members, as well as the spring and the movable core, are supported within the core guide tube and surrounded by the fluid medium. The core guide tube is open at one end facing the valve chamber and closed at the other end.

대표청구항 ▼

A valve having a valve chamber supporting a valve seat selectively engaged by a valve diaphragm for controlling the flow of a medium comprising a bistable, eletromagnetic solenoid valve including (i) a longitudinally-extending core guide tube having a first end opening towards the valve chamber and

A valve having a valve chamber supporting a valve seat selectively engaged by a valve diaphragm for controlling the flow of a medium comprising a bistable, eletromagnetic solenoid valve including (i) a longitudinally-extending core guide tube having a first end opening towards the valve chamber and a second closed end, wherein said core guide tube is filled with the medium, (ii) a single electromagnetic winding surrounding said core guide tube, and (iii) an armature comprising a movable core disposed within said core guide tube for opening and closing said valve diaphragm, and (iv) a locking mechanism, coaxially located with respect to said movable core, within said core guide tube, said locking mechanism comprising: (a) a first locking member longitudinally displaceable within said core guide tube; (b) a second locking member longitudinally displaceable against said first locking member and means for rotating said second locking member in a lifted position through a preset angle, whereby said locking mechanism alternates between an engaged and a released state; and (c) a coil spring for biasing said second locking member and operating as a return spring for resetting said movable core into one of two stable positions corresponding to the engaged and released states and the open and closed positions of said valve diaphragm; wherein successive excitation of said electromagnetic winding displaces said movable core to lift and rotate said second locking member so that said locking mechanism is alternately engaged and released with said coil spring resetting said movable core to open and close the valve to control the flow of the medium.