Title:
MULTIBLADE CENTRIFUGAL FAN
Document Type and Number:
WIPO Patent Application WO/2022/085175
Kind Code:
A1
Abstract:
This multiblade centrifugal fan comprises: an impeller having a disc-shaped main plate, a plurality of blades that are arrayed in the circumferential direction on the circumferential edge portion of the main plate, and a ring-shaped side plate that is disposed facing the main plate and fixes the plurality of blades; and a spiral-type scroll casing accommodating the impeller and guiding air entering from the side-plate side so as to exit circumferentially outward. The impeller is formed from metal. Each blade spans from the main-plate side to the side-plate side, has a constant thickness, and extends further inward than the inner circumferential end of the side plate.
Inventors:
HAYASHI HIROYASU (JP)
TERAMOTO TAKUYA (JP)
FUJIKI KATSUHIRO (JP)
SHINGU WAHEI (JP)
TERAMOTO TAKUYA (JP)
FUJIKI KATSUHIRO (JP)
SHINGU WAHEI (JP)
Application Number:
PCT/JP2020/039898
Publication Date:
April 28, 2022
Filing Date:
October 23, 2020
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04D29/30
Foreign References:
| JP2002357196A | 2002-12-13 | |||
| JP2000145693A | 2000-05-26 | |||
| JP2012036885A | 2012-02-23 |
Other References:
See also references of EP 4234946A4
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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