Title:
IMPELLER FOR CENTRIFUGAL FAN, AND METHOD AND DEVICE FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2017/115490
Kind Code:
A1
Abstract:
An impeller (8) has: main plate-side weld sections (8a, 8b) between a main plate (60) and main plate-side axial ends (71) of blades; and shroud-side weld sections (8c) between a shroud (80) and shroud-side axial ends (72) of the blades. The main plate-side weld sections (8a, 8b) have formed therein main plate-side weld holes (8d) each extending through the main plate (60) to reach a part of the main plate-side axial end (71) of a blade. The shroud-side weld sections (8c) have formed therein shroud-side weld holes (8e) which are recesses extending through the shroud (80) to reach the shroud-side axial ends (72) of the blades.
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Inventors:
KUMAOU SHIGEO
Application Number:
PCT/JP2016/073637
Publication Date:
July 06, 2017
Filing Date:
August 10, 2016
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F04D29/28; B06B1/02; B23K20/10; F04D29/30; F04D29/62
Domestic Patent References:
WO2009128299A1 | 2009-10-22 |
Foreign References:
JP2015086827A | 2015-05-07 | |||
JPH10156555A | 1998-06-16 | |||
JP2010510911A | 2010-04-08 | |||
JP2008111393A | 2008-05-15 | |||
JP2014172083A | 2014-09-22 | |||
JP2010069492A | 2010-04-02 |
Other References:
See also references of EP 3399195A4
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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