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Patent Searching and Data


Title:
WET-ROTOR MOTOR PUMP
Document Type and Number:
WIPO Patent Application WO/2013/079178
Kind Code:
A3
Abstract:
The invention relates to a wet-rotor motor pump comprising a can (5) which separates the motor stator (4) from the rotor mounted in the can (5) on a motor shaft (2), said motor shaft (2) projecting into the pump chamber (10) and carrying, in said pump chamber, the impeller (1). A coaxial annular space (12), which is open towards the pump chamber (10), is provided on the rear of the impeller, the rear of the impeller having a throttled throughflow opening (15) in the region of the annular space (12), said throughflow opening connecting the annular space (12) to the interior of the impeller, especially to the pump intake side.

Inventors:
STRELOW GUENTER (DE)
Application Number:
PCT/EP2012/004851
Publication Date:
October 03, 2013
Filing Date:
November 23, 2012
Export Citation:
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Assignee:
WILO SE (DE)
International Classes:
F04D13/06; F04D29/58
Foreign References:
DE3931665C11991-02-21
DE10240800A12004-03-18
US4047847A1977-09-13
DE29610799U11997-02-27
US6012909A2000-01-11
Attorney, Agent or Firm:
COHAUSZ HANNIG BORKOWSKI WISSGOTT (Düsseldorf, DE)
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