Patent ID: 8567440
Filing Date: 2013-10-29
Classification: F16K,Y10T

Abstract:
1. A solenoid operated valve for controlling liquid or gaseous media, the valve comprising: an armature; a valve body housing including a non-magnetic material; a solenoid with a yoke and a coil; and at least two media ports configured to be opened and closed by the armature and the solenoid, wherein the armature includes a magnetizable material that is movably arranged inside the valve body housing, wherein the at least two media ports empty into the valve body housing, wherein the valve body housing is arranged between the yoke and an additional element for magnetically interacting with the armature, wherein the armature includes a permanent magnetic material, wherein the armature is formed as a multi part armature in such a manner that a north pole is situated at one end of the armature in a longitudinal axis direction and wherein a south pole is situated at an opposite end, wherein lines of magnetic flux running between the north pole and the south pole leave from the armature and enter into the armature basically perpendicularly to the longitudinal axis, wherein the yoke is designed as a U-shaped yoke with two yoke poles, a first one of the two yoke poles interacting with the north pole of the armature and a second one of the two yoke poles interacting with the south pole of the armature, wherein the multipart armature comprises a permanent magnet arranged between two ferromagnetic components, and wherein the armature closes one of a pair of independent magnetic circuits through the additional element if the armature is in a first position and the armature closes another of the pair of independent magnetic circuits through the yoke if the armature is in a second position.