Ventil

摘要

1,068,610. Electromagnets. SKINNER PRECISION INDUSTRIES Inc. Oct. 5, 1964 [Oct. 9, 1963], No. 40428/64. Heading HIP. [Also in Divisions F2 and H2] In a magnetically operated fluid control valve, ports 7 and 9 are alternately connectable with port 10 by a plunger 12 slidable in a flow passage 4 and provided with a permanent magnet 14 contained therein to hold magnetic polepieces 16, having elastomeric seal inserts 18 and longitudinal fluid passage grooves 17, in position upon one of respective seats 13 from which it is displaced to the other upon energization of an electromagnet 20. The E-shaped core of the electromagnet comprises legs 22, 23 and 24 and legs 22, 23 may also comprise the cover. Alternatively (Fig. 10, not shown), the plunger may be formed of magnetic material with a permanent magnet provided in each outer leg (22) of the electromagnetic core and being each of reversed polarity. The valve (Figs. 14-16, not shown) may also comprise two side-by-side separate arrangements of ports and plungers similar to the Fig. 1 embodiment, but operated by a single electromagnet with the polarity of each plunger reversed. In single way valve (Fig. 9, not shown), the @ leg (40) of the electromagnet core (42) extends across the flow passageway and is apertured (at 46) to accommodate the plunger (44) which effects closure only upon one of the passageways (53), the right-hand polepiece of the plunger being provided with a groove (56) to provide communication between the passageways (53 and 55) when the plunger is unseated. The electromagnets may be actuated from a battery source (32) (Fig. 3) acting through a capacitor (34) in series with the electromagnet coil (26) and double throw switch (36); the actuating circuit being provided as a power pack mounted within the valve cover. Alternatively (Fig. 13, not shown) an A.C. power source may be provided selectively connectible through a pair of opposed parallel rectifiers by a double throw switch. In an alternative embodiment (see Division H2), with an arrangement of ports and a plunger similar to the Fig. 1 embodiment, the electromagnet is replaced by a magnetic coupling.