HIGH-SPEED WATER JET PROPULSION PUMP AND POWERED SURFBOARD

WIPO Patent Application WO/2022/252551

A1

A high-speed water jet propulsion pump and a powered surfboard. The water jet propulsion pump comprises an outer stator (210), an inner rotor (220), and an impeller (230) provided in the inner rotor (220); the inner rotor (220) is annular, the outer edge of the impeller (230) is connected to the inner wall of the inner rotor (220); a wheel axle (240) is provided in the middle of the impeller (230); the wheel axle (240) is fixed in the middle of a water inlet flow channel (100) by means of a radial support (250), such that the inner rotor (220) can rotate in the outer stator (210) by means of the wheel axle (240); a gap is left between the inner rotor (220) and the outer stator (210); when the inner rotor (220) drives the impeller (230) to rotate, a low-pressure area is formed on the side of water flow located at a water inlet of the impeller (230), a high-pressure area is formed on the side located at a water outlet of the impeller (230), and a cooling water path is formed by the high-pressure area and the low-pressure area by means of the gap; and the water flow in the cooling water path takes away heat on the outer stator (210) in a flowing process, such that the working temperature of a motor of the high-speed water jet propulsion pump is decreased.

LI GUONENG (CN)
WANG RULONG (CN)
CHEN YUANZHANG (CN)

PCT/CN2021/136966

December 08, 2022

December 10, 2021

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ZHEJIANG MOOVI TECH CO LTD (CN)

F04D13/06; B63B32/10; B63H11/08; F04D29/20; F04D29/54; F04D29/58; F04D29/64

CN113187735A	2021-07-30
CN214837186U	2021-11-23
CN201300970Y	2009-09-02
CN110697011A	2020-01-17
KR20180064057A	2018-06-14
CN106762804A	2017-05-31
US3182623A	1965-05-11
CN2464632Y	2001-12-12

ZHEJIANG SHINE PATENT OFFICE (GENERAL PARTNER) (CN)

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