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Patent Searching and Data


Title:
CENTRIFUGAL PUMP
Document Type and Number:
WIPO Patent Application WO/2019/058669
Kind Code:
A1
Abstract:
According to the present invention, an impeller (5) is provided with: a main plate (35) that is fixed to a rotating shaft (1); a shroud (37) that has a liquid inlet (30) and that faces the main plate (35); and a plurality of blades (38) that are disposed between the main plate (35) and the shroud (37). A balancing hole (40) is formed in the main plate (35), a plurality of trim edges (42), which are recessed radially toward the inside, are formed on an outer circumference part of the main plate (35), and outside portions of the blades (38) are positioned between two adjacent trim edges (42) among the plurality of trim edges (42). This centrifugal pump is a single liner type that has a liner ring (31) only on the shroud side of the impeller (5).

Inventors:
YOMOGIDA, Ryoken (11-1 Haneda Asahi-cho, Ohta-k, Tokyo 10, 〒1448510, JP)
KAWASAKI, Hiroyuki (11-1 Haneda Asahi-cho, Ohta-k, Tokyo 10, 〒1448510, JP)
KUROIWA, So (11-1 Haneda Asahi-cho, Ohta-k, Tokyo 10, 〒1448510, JP)
HSU, Shu Yu (11-1 Haneda Asahi-cho, Ohta-k, Tokyo 10, 〒1448510, JP)
BENETTON, Fabrizio (Via Campo Sportivo 30 Cles, 38023, IT)
TROVI, Marco (Via Campo Sportivo 30 Cles, 38023, IT)
SAKIHAMA, Dai (11-1 Haneda Asahi-cho, Ohta-k, Tokyo 10, 〒1448510, JP)
Application Number:
JP2018/023057
Publication Date:
March 28, 2019
Filing Date:
June 18, 2018
Export Citation:
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Assignee:
EBARA CORPORATION (11-1, Haneda Asahi-cho Ohta-k, Tokyo 10, 〒1448510, JP)
International Classes:
F04D29/22; F04D1/08; F04D15/00; F04D29/041
Foreign References:
JPS54136604U1979-09-21
JPH03160195A1991-07-10
JP2007205360A2007-08-16
JP2017531757A2017-10-26
JPS58192995A1983-11-10
JPS6236286U1987-03-03
JPS56161195U1981-12-01
Attorney, Agent or Firm:
HIROSAWA, Tetsuya et al. (GOWA Nishi-Shinjuku 4F, 5-8 Nishi-Shinjuku 7-chome, Shinjuku-k, Tokyo 23, 〒1600023, JP)
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