Rotary flow-path exchanging valve

Details Rotary flow-path exchanging valve Rotary flow-path exchanging valve

1998-06-25

1999-11-30

Fox, John

Fluid handling

Systems

Multi-way valve unit

13762546, F16K 1106

Patent

active

059924594

ABSTRACT:
In a rotary flow-path exchanging valve, the magnetic force generated in a pair of main magnetic pole pieces 66 by energization of an electromagnetic solenoid is acted on a multi-pole magnet 71 of a main valve element accommodated within a valve housing 1 so that the main valve element 3 is rotated to exchange a flow-path. The multi-pole magnet 71 is made of a plastic magnet of plastic material mixed with magnetic powder. The main valve element 3 and multi-pole magnet 71 are integrally formed by multiple molding. A pair of main magnetic pole pieces 66 magnetically connected to one polarity of the electromagnetic solenoid 11 are arranged. A pair of auxiliary magnetic pole pieces 70 connected to the other polarity of the electromagnetic solenoid 11 are arranged at positions out of phase from the magnetic pole pieces by 90.degree.. The pair of auxiliary magnetic poles 70 are opposed to portions of the multi-pole magnet 71 having a reverse polarity to that of portions of the multi-pole magnet 71 opposite to the main magnetic poles 66.

REFERENCES:
patent: 2693930 (1954-11-01), Carter
patent: 5690144 (1997-11-01), Tahahashi

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