Fluid handling – Systems – Multi-way valve unit
Patent
1982-05-03
1985-07-23
Rosenthal, Arnold
Fluid handling
Systems
Multi-way valve unit
13762533, 13762548, 251 65, 251129, 251139, F16K 3104, F16K 1107
Patent
active
045303746
ABSTRACT:
A linear motor-actuated flow control valve includes: a casing having an inlet port and an outlet port; a moving-coil linear motor disposed within said casing, said linear motor including a hollow, ferromagnetic core which delimits the interior of said casing into valve chambers and which has a valve hole or holes for communicating said inlet and outlet ports with each other, a bobbin slidably disposed on said core for controlling the opening degree of the valve hole(s), an electromagnetic coil wound on said bobbin, a permanent magnet so arranged that the magnetic flux produced thereby extends axially of said electromagnetic coil, and a magnetic body for forming a magnetic circuit, in cooperation with said core, for the flux produced by said permanent magnet; and spring for biasing said bobbin so that said bobbin is retained at a predetermined position by said spring means when said electromagnetic coil is in the de-energized state, whereby said valve hole(s) is/are held open or closed to a predetermined degree, said spring serving as power supply lines for said electromagnetic coil, wherein the improvement comprises some of said valve holes, referred to a first valve hole(s), disposed at a position lying within said magnetic circuit along the length of said hollow ferromagnetic core, and a second valve hole(s) disposed at the other position(s) lying outside of said magnetic circuit along the length of said core.
REFERENCES:
patent: 4056178 (1977-11-01), Detty
patent: 4216938 (1980-08-01), Inada et al.
patent: 4350319 (1982-09-01), Kawata et al.
patent: 4368759 (1983-01-01), Akagi
Akagi Motonobu
Hattori Kyo
Kawabata Yasuhiro
Aisin Seiki Kabushiki Kaisha
Rosenthal Arnold
Toyota Jidoshakogyo Kabushiki Kaisha
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