Title:
CENTRIFUGAL PUMP DIRECTLY CONNECTED TO ULTRA-HIGH SPEED PERMANENT MAGNET MOTOR
Document Type and Number:
WIPO Patent Application WO/2020/246686
Kind Code:
A1
Abstract:
The present invention relates to a centrifugal pump directly connected to an ultra-high speed permanent magnet motor. The motor comprises: a motor housing; a rotor having an intermediate rotor part, arranged in the center of a motor housing, with permanent magnets mounted thereon, an upper rotor part extending upward from the intermediate rotor part and drawn out through an upper draw-out hole of the motor housing, and a lower rotor part extending downward from the intermediate rotor part and drawn out through a lower draw-out hole of the motor housing; and a stator arranged around the outer circumference of the intermediate rotor part, with a coil wound therearound, and fixed to an inner wall of the motor housing. An impeller is fixed to the bottom end of the lower rotor part on the same shaft. A casing discharges, through a fluid outlet, fluid passing through a fluid passage from a fluid inlet, and receives the impeller in the fluid passage through an upper opening. A stuffing box is arranged between the motor housing and the casing so as to maintain airtightness between the upper opening of the casing and the lower rotor part.
Inventors:
HA KI YOUNG (KR)
Application Number:
PCT/KR2020/001710
Publication Date:
December 10, 2020
Filing Date:
February 06, 2020
Export Citation:
Assignee:
DONGYANG CHEMICAL PUMP CO LTD (KR)
International Classes:
F04D13/06; F04D29/046; F04D29/44; F04D29/58; H02K9/06
Foreign References:
| JP2015146716A | 2015-08-13 | |||
| KR20130036405A | 2013-04-12 | |||
| KR20150061942A | 2015-06-05 | |||
| KR20170013532A | 2017-02-07 | |||
| US20100232949A1 | 2010-09-16 |
Attorney, Agent or Firm:
SINJI PATENT FIRM (KR)
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