Title:
Centrifugal ventilation fan
Document Type and Number:
Japanese Patent JP6228728
Kind Code:
B2
Abstract:
A centrifugal blowing fan comprises a back yoke made from metal, having a substantially bottomed cylindrical portion around a rotating shaft of a motor, an inner surface attached with a magnet of the motor mounted thereon and a flange portion disposed around a periphery of an opening of the cylindrical portion; and a cylindrical impeller made from resin, having a plurality of blades circumferentially arranged, an annular collar portion joined with first ends of the plurality of blades and a doughnut-shaped disk portion joined with second ends of the plurality of blades, wherein the disk portion has at least one fitting, and the flange portion has at least one fitted space receiving the at least one fitting so as to concentrically and fixedly connect the impeller 16 and the back yoke.
Inventors:
Kazuhiko Fujita
Application Number:
JP2012122300A
Publication Date:
November 08, 2017
Filing Date:
May 29, 2012
Export Citation:
Assignee:
MinebeaMitsumi Co., Ltd.
International Classes:
F04D29/28; F04D25/08
Domestic Patent References:
| JP775288A | ||||
| JP6365896U | ||||
| JP200492446A | ||||
| JP7332290A |
Attorney, Agent or Firm:
Tomohiro Sakamoto