Motor-driven proportional fluid flow control valve

Details Motor-driven proportional fluid flow control valve Motor-driven proportional fluid flow control valve

1983-09-20

1986-04-29

Rosenthal, Arnold

Fluid handling

Systems

Multi-way valve unit

F16K 3104, F16K 3108

Patent

active

045850283

ABSTRACT:
A motor-driven proportional fluid flow control valve has a linear motor including a slide valve body slidably mounted on a hollow iron core and an electromagnetic coil wound around the iron core. After a drive circuit has been energized, a constant current is passed through the electromagnetic coil to keep the slide valve body spaced from a stop surface while cutting off fluid communication between an inlet port and an outlet port. With the slide valve body out of contact with the stop surface, the slide valve does not produce noise which would otherwise be given off due to a fluctuating current flowing, through or vibrations of, the electromagnetic coil.

REFERENCES:
patent: 3099280 (1963-07-01), Holzbock
patent: 3688495 (1972-09-01), Fehler et al.
patent: 4227443 (1980-10-01), Toot
patent: 4291358 (1981-09-01), Dettmann et al.
patent: 4350319 (1982-09-01), Kawata et al.
patent: 4368759 (1983-01-01), Akagi

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