Title:
DRAIN IMPELLER
Document Type and Number:
Japanese Patent JP2018119430
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a drain impeller which improves water pumping efficiency and decrease generation of air bubbles.SOLUTION: A drain impeller 10 is provided with one shaft center 11, one annular bottom plate 21 and one annular wall surface 31. The shaft center 11 causes one end to have a linkage tank 13, is used for linking one driving shaft and allows a plurality of support ribs 15 to be extended toward a radial direction outer side. The annular bottom plate 21 is provided on bottom parts of the plurality of support ribs 15, the annular bottom plate 21 and the shaft center 11 are separated from each other, a plurality of engraving parts are formed among the shaft center 11, the plurality of support ribs 15 and the annular bottom plate 21, and a bottom surface of the annular bottom plate 21 is formed in wavy undulations. The annular wall surface 31 includes one upper edge part 33 and one lower edge part 35, is connected with an outer end part of each support rib 15 and is connected to the annular bottom plate 21 by the lower edge part 35, the upper edge part 33 is undulated in a wave shape and the lower edge part 35 is undulated in a wave shape.SELECTED DRAWING: Figure 1
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Inventors:
XIAO YU-MING
Application Number:
JP2017010075A
Publication Date:
August 02, 2018
Filing Date:
January 24, 2017
Export Citation:
Assignee:
HOLIMAY CORP
International Classes:
F04D1/14; F04D29/24; F04D29/66
Domestic Patent References:
| JP3129485U | 2007-02-22 | |||
| JPH09145085A | 1997-06-06 | |||
| JP2001123977A | 2001-05-08 | |||
| JP2010007909A | 2010-01-14 | |||
| JP2011017262A | 2011-01-27 | |||
| JPH06307375A | 1994-11-01 |
Attorney, Agent or Firm:
Masaki Hattori