VALVE FOR VISCOUS FLUID APPLICATOR

PROBLEM TO BE SOLVED: To miniaturize a magnetic force for driving an armature. SOLUTION: This viscous fluid feeding valve 10 is provided with a valve element 12 defining a fluid chamber and a stepped armature 16 arranged therein. The armature 16 includes a first part 102 defining a first clearance 1...

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Bibliographische Detailangaben
Hauptverfasser:	STOBBS THOMAS J, WARD JAMES R
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING NOZZLES PERFORMING OPERATIONS SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL TAPS THERMAL INSULATION IN GENERAL TRANSPORTING VALVES WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To miniaturize a magnetic force for driving an armature. SOLUTION: This viscous fluid feeding valve 10 is provided with a valve element 12 defining a fluid chamber and a stepped armature 16 arranged therein. The armature 16 includes a first part 102 defining a first clearance 134 toward the inside face of the valve element 12 by holding the distance from the inside face and a small-diameter second part 100 engaged with the inside face of the valve element 12 so as to support the armature 16 in the valve element 12 and defining a second clearance 130 with a low magnetic resistance. When exciting a solenoid coil 20 by a peak hold type driving current, a magnetic field is formed to move the armature 16 relative to a magnetic pole piece 14 and the valve element 12. When the second part 100 is saturated by the magnet in a peak part of the driving current, a magnetic flux aims at the first part 102 inside. The second part 100 gets rid of the saturated state in a driving current hold part so that a part of the magnetic flux passes through the clearance 130 with low magnetic resistance.