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Patent Searching and Data


Title:
CENTRIFUGAL PUMP
Document Type and Number:
WIPO Patent Application WO/2014/073140
Kind Code:
A1
Abstract:
A casing that houses a centrifugal impeller has a partition surface that opposes the standing end surface of the centrifugal impeller blade, with a prescribed clearance in the direction of the axial center of rotation. A protruding part, which protrudes from the partition surface in the direction of the axial center of rotation and thus separates the inside and the outside in the radial direction, is arranged in a ring shape on the partition surface so as to surround a suction port. Multiple notches are provided in the ring-shaped protruding part so as to provide a connection between the inside and the outside in the radial direction.

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Inventors:
SHIMIZU, Hiromasa (1-1, Shinmeiwa-cho, Takarazuka-sh, Hyogo 50, 〒6658550, JP)
TACHIBANAKI, Takahisa (1-1, Shinmeiwa-cho, Takarazuka-sh, Hyogo 50, 〒6658550, JP)
Application Number:
JP2013/005592
Publication Date:
May 15, 2014
Filing Date:
September 20, 2013
Export Citation:
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Assignee:
SHINMAYWA INDUSTRIES, LTD. (1-1 Shinmeiwa-cho, Takarazuka-shi Hyogo, 50, 〒6658550, JP)
International Classes:
F04D7/04; F04D29/70
Foreign References:
JPS54145802U
JPS52140401U
JPS55142990A
JP2007205167A
JPS51120504U
JPS53128901U
Attorney, Agent or Firm:
MAEDA & PARTNERS (Osaka-Marubeni Bldg.5F, 5-7 Hommachi 2-chome, Chuo-ku, Osaka-sh, Osaka 53, 〒5410053, JP)
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