MAGNETICALLY DRIVEN PUMP DEVICE

WIPO Patent Application WO/2013/150646

A1

A magnetically driven pump device is configured in such a manner that an impeller (12b) is rotated relative to a pump case (11) by a rotating magnetic field applied without contact by a drive unit (20) to a driven body (12d). Permanent magnets are arranged on the driven body (12d) so that different poles appear alternately on the outer periphery of the driven body (12d) when the driven body (12d) is rotated. The drive unit (20) is provided with: a magnet body (23) having permanent magnets arranged thereon so that different poles appear alternately on the outer periphery of the magnet body (23) when the magnet body (23) is rotated about a predetermined axis; and a rotary actuator (22) for rotating the magnet body (23) about the axis thereof. The magnet body (23) is disposed next to the driven body (12d) in such a manner that the axis of the magnet body (23) is oriented so as not to be perpendicular to the center of rotation of the impeller (12b). The impeller (12b) is rotated through the driven body (12d) by rotating the magnetic body (23) by means of the rotary actuator (22).

ISHIYAMA KAZUSHI
MATSUMURA SYUJI
OZAKI MASARU

PCT/JP2012/059548

October 10, 2013

April 06, 2012

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UNIV TOHOKU (JP)
I & P CO LTD (JP)
ISHIYAMA KAZUSHI
MATSUMURA SYUJI
OZAKI MASARU

F04D13/02

JPH0637588U	1994-05-20
JPH01173490U	1989-12-08
JPH10122176A	1998-05-12
JP2004011634A	2004-01-15
JP2000102605A	2000-04-11

SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)

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