Pumps – Motor driven – Motor within rotary pumping member
Patent
1990-06-05
1992-09-22
Bertsch, Richard A.
Pumps
Motor driven
Motor within rotary pumping member
417372, 417420, 310 86, 310156, F04D 1306
Patent
active
051492539
ABSTRACT:
A magnet pump in which an impeller having a permanent magnet embedded therein is rotatably driven by a magnetic force from the outside of the impeller is disclosed. The pump comprises a pump casing including a suction port, a discharge port and a pumping chamber in which the impeller is contained. The impeller is rotatably contained in the pumping chamber of the casing and has the permanent magnet embedded therein. A pair of bearings, one being fixed to the casing and the other being fixed to the impeller is provided. A magnetic force driving mechanism constitutes a means for affording the magnetic force on the permanent magnet within the impeller to rotatably drive the latter. The magnetic force driving mechanism is mounted on a non-liquid-contacting portion of the casing at a position facing the impeller in respect to the direction of the rotary shaft axis of the impeller. A fluid inlet passage for communicating between the suction port and the pumping chamber is formed to pass through the center portion of the magnetic force driving mechanism.
REFERENCES:
patent: 3194165 (1965-07-01), Sorlin
patent: 3291056 (1966-12-01), Steinman
patent: 3867655 (1975-02-01), Stengel et al.
patent: 4806080 (1989-02-01), Mizabuchi et al.
Patent Abstracts of Japan, unexamined applications, M field, vol. 5, No. 72, May 14, 1981, The Patent Office Japanese Govt., p. 136 M68, Kokai-No. 56-23 592 (Yazaki).
Patent Abstracts of Japan, unexamined applications, M field, vol. 11, No. 114, Apr. 10, 1987, The Patent Office Japanese Govt., p. 121 M 579, Kokai-No. 61-258 992 (Mitsubishi).
Kanamori Toshiya
Miyamoto Eiji
Ojima Yoshinori
Yakabe Tadashi
Bertsch Richard A.
Ebara Corporation
Scheuermann David W.
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