Title:
CLOSED IMPELLER AND METHOD FOR PRODUCING CLOSED IMPELLER
Document Type and Number:
WIPO Patent Application WO/2021/225024
Kind Code:
A1
Abstract:
An impeller main body (20) has a plurality of vanes (22). A shroud (30) is press-molded into a shape which extends along the tip end sections of the vanes (22). The surface of the shroud (30) on the impeller main body (20) side thereof is provided with a plurality of projecting parts (33). The projecting parts (33) extend along the vanes (22) and are joined to the vanes (22) by a brazing material (32).
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Inventors:
OKADA TADASHI (JP)
Application Number:
PCT/JP2021/007762
Publication Date:
November 11, 2021
Filing Date:
March 01, 2021
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F04D29/28
Foreign References:
| JPS4890008A | 1973-11-24 | |||
| KR20150011237A | 2015-01-30 | |||
| JP2015048708A | 2015-03-16 | |||
| JP2012526230A | 2012-10-25 | |||
| JP2015158165A | 2015-09-03 | |||
| JPH06272696A | 1994-09-27 | |||
| JP2000145690A | 2000-05-26 | |||
| JP2010174652A | 2010-08-12 |
Other References:
See also references of EP 4134553A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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