Electromagnetically operable fluid flow control valve mechanism

Details Electromagnetically operable fluid flow control valve mechanism Electromagnetically operable fluid flow control valve mechanism

1985-12-18

1987-05-19

Rosenthal, Arnold

Fluid handling

Systems

Multi-way valve unit

251 65, F16K 3108, F16K 1107

Patent

active

046659480

ABSTRACT:
An electromagnetic fluid flow control valve mechanism has a hollow slide valve linearly movable on and along a core in response to energization of a coil disposed around the slide valve for selective fluid communication between a inlet port and first and second outlet ports through a chamber in a casing. The ratio of a cross-sectional area of the inlet port to that of each of the first and second outlet ports is selected such that the chamber will develop a relatively small vacuum such as of 20 mmAg at maximum. Preferably, the ratio is 6.5 or greater. This arrangement prevents a fluid, typically air, from flowing from the second outlet port back into the chamber.

REFERENCES:
patent: 4307752 (1981-12-01), Inada et al.
patent: 4350319 (1982-09-01), Kawata et al.
patent: 4368759 (1983-01-01), Akagi
patent: 4437645 (1984-03-01), Nomura et al.

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