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Patent Searching and Data


Title:
A CENTRIFUGAL DISCHARGE PUMP
Document Type and Number:
WIPO Patent Application WO/2005/124157
Kind Code:
A1
Abstract:
A centrifugal discharge pump includes a pump body, a pump cover, permanent magnetic rotor, a rotating shaft and an impeller. The permanent magnetic rotor is disposed in magnetic chamber and the impeller is arranged in an impeller chamber formed with the pump cover. The rotating shaft extends from the pump body to the impeller chamber. The permanent magnetic rotor is fixed to the lower end of the rotating shaft and a shaft sleeve is fiE5d to its top end. There is a screw transmission structure between the impeller and the shaft sleeve. The rotation of the impeller is slightly later than startup of the rotor and the rotating shaft. This situation benefits the permanent magnetic rotor start-up with zero resistance, and then the rotor forces the impeller to rotate with it together when the rotor is accelerated to a high speed. Therefore, the invention can reduce the resistance to startup of the motor to a lowest level and decrease the load of startup and output power of the motor.

Inventors:
Shi, Huashan (Building 1, Huan Shi Dong Feng Industrial Estate Jiangmen, Guangdong 0, 52900, CN)
Application Number:
PCT/CN2004/001355
Publication Date:
December 29, 2005
Filing Date:
November 26, 2004
Export Citation:
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Assignee:
JIANGMEN HANYU ELECTRICAL CO., LTD. (Building 1, Huan Shi Dong Feng Industrial Estate Jiangmen, Guangdong 0, 52900, CN)
Shi, Huashan (Building 1, Huan Shi Dong Feng Industrial Estate Jiangmen, Guangdong 0, 52900, CN)
International Classes:
D06F17/08; D06F39/08; F04D1/04; F04D13/02; F04D13/06; F16D1/12; H02K7/118; H02K51/00; (IPC1-7): F04D13/06; D06F17/08; F16D1/12; H02K51/00
Attorney, Agent or Firm:
GUANGZHOU SINO PATENT AGENT CO., LTD. (4th floor, No. 87 Cangbian Roa, Guangzhou Guangdong 0, 51003, CN)
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