CANNED MOTOR PUMP

WIPO Patent Application WO/2022/059709

A1

In order to provide a high-precision canned motor pump which is lightweight and with which efficiency is not liable to deteriorate: a rear bearing (5), which is an insert member, is held by insert molding in a bearing holding portion (10) at the center of a bottom surface provided at the rear end of a back casing (4); a recessed portion (27) provided in the outer circumference of the rear bearing mates with a projecting portion (28) of the inner circumference of the bearing holding portion; an outer cylinder wall (17) is provided extending parallel to the axial direction of a shaft (7) as a cylindrical outer extended portion, on a bottom surface outer circumferential portion of the back casing; a lid (20) mates with and is sealed to a distal end of the outer cylinder wall; an intermediate casing (13, 14) for holding a front bearing (6) is provided between a motor portion (2) and a pump portion (3); the rear bearing and the front bearing support the shaft with freedom to rotate; and the back casing, the cylindrical outer extended portion, the lid, and the outer circumference of a stator are covered and formed as an integrated body by means of a resin molding (29).

JP2006233836	PUMP
JP2012052506	ELECTRIC PUMP

CAO YINCHUN (JP)
NAGANO HIROTADA (JP)
IMAGAWA YU (JP)
NORISADA KENTA (JP)
FUKUSHIMA MASAKAZU (JP)

PCT/JP2021/033947

March 24, 2022

September 15, 2021

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SANSO ELEC MFG (JP)

F04D13/06; F04D5/00

JP2012154282A	2012-08-16
JP2001231213A	2001-08-24
US20200056616A1	2020-02-20
JP2009299628A	2009-12-24
JP2008057513A	2008-03-13
JP2008075462A	2008-04-03
JP2012202320A	2012-10-22

YOKOI Kenji et al. (JP)

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