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Patent Searching and Data


Title:
IMPELLER FOR BATH WATER SELE-PRIMING PUMP FOR WASHING MACHINE
Document Type and Number:
Japanese Patent JP2002070781
Kind Code:
A
Abstract:

To relieve cavitations occurring at the rotation of an impeller, to prevent intake air, to shorten an initial bath water suction time and to increase the volume of discharge water.

A closed type impeller equipped with a shroud ring at a suction pipe side 20 and a shroud ring 25 at a motor side is changed to the semi-open type impeller 10 which opens the shroud ring 25 at the motor side, and curved surface shape is provided in the inner face of a water intake 29 which is not equipped with a prominent cylindrical wall at the center of the shroud ring at the suction pipe side.


Inventors:
WAKIZAKA KATSUMI
Application Number:
JP2000254989A
Publication Date:
March 08, 2002
Filing Date:
August 25, 2000
Export Citation:
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Assignee:
TECHNO EXCEL CO LTD
International Classes:
D06F39/08; F04D9/02; F04D29/24; (IPC1-7): F04D9/02; D06F39/08; F04D29/24