Title:
CLOSED IMPELLER AND MANUFACTURING METHOD FOR CLOSED IMPELLER
Document Type and Number:
Japanese Patent JP2021177075
Kind Code:
A
Abstract:
To suppress failure upon brazing a shroud having been subjected to press molding.SOLUTION: An impeller body (20) has a plurality of blade parts (22). A shroud (30) is press-molded into a shape along the tip part of the blade part (22). A plurality of protrusion parts (33) is provided on the surface of the shroud (30) on the impeller body (20) side. The protrusion part (33) extends along the blade part (22) and is joined to the blade part (22) with a brazing material (32).SELECTED DRAWING: Figure 7
Inventors:
OKADA TADASHI
Application Number:
JP2020082754A
Publication Date:
November 11, 2021
Filing Date:
May 08, 2020
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
F04D29/28
Domestic Patent References:
| JPS4890008A | 1973-11-24 | |||
| JP2015048708A | 2015-03-16 | |||
| JP2010121612A | 2010-06-03 | |||
| JP2020508732A | 2020-03-26 | |||
| JP2015158165A | 2015-09-03 | |||
| JP2012526230A | 2012-10-25 | |||
| JPH06272696A | 1994-09-27 | |||
| JPS5173607A | 1976-06-25 | |||
| JPS54145005A | 1979-11-12 |
Foreign References:
| KR20150011237A | 2015-01-30 | |||
| CN102817869A | 2012-12-12 |
Attorney, Agent or Firm:
Maeda patent office
Previous Patent: Display system, display device and display method
Next Patent: Air pump anti-vibration installation stand
Next Patent: Air pump anti-vibration installation stand