摘要 |
The present invention. comprises a diaphragm type solenoid fluid valve assembly of the class used in the on/off control of pressurized fluid flow. The valve assembly has a housing, a solenoid, and a magnetized cylindrical armature engagingly coupled to the solenoid and residing within the hollow center of the solenoi d. The armature further has a spring affixed to one end of the armature and affixed to the end of the solenoid, wherein the spring and armature are capable of linear motio n within the fluid chamber of the valve housing and within the cylindrical plunger guide of the solenoid. The linear motion is controlled by the magnetic field of the solenoid and the spring so as to enable the magnetized armature to abut against the orifice fluid exit of the orifice plate to prevent fluid flow there-through. The valve assembly further comprises a solenoid driver adapted to generate a pulse width modulated sign al having two voltage levels other than zero volts, so as to control valve operation, wherein the first voltage level is to initiate movement of the magnetized armature, and the second voltage level is to hold the magnetized armature in the energized position.
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