Title:
DOUBLE INVERSION TYPE FAN
Document Type and Number:
Japanese Patent JP2019178656
Kind Code:
A
Abstract:
To provide a double inversion type fan which increases an air capacity.SOLUTION: As one embodiment, a double inversion type fan 100 comprises: a first fan 1 including a first impeller 10 including multiple first blades disposed radially around a predetermined central axis J, a first motor part 11 for rotating the first impeller around the central axis, and a first case enclosing an outer periphery of the first impeller; and a second fan 2 including a second impeller 20 including multiple second blades disposed radially around the central axis, a second motor part 21 for rotating the second impeller around the central axis, and a second case enclosing an outer periphery of the second impeller. The multiple first blades include a front edge part which is positioned at a frontmost side in a rotation direction, and a rear edge part which is positioned at a rearmost position in the rotation direction. A radially outermost end of the rear edge part is positioned closer to the second fan than a radially innermost end.SELECTED DRAWING: Figure 4
Inventors:
KATO YOSHIHIKO
BAMBA TAKAHIRO
KAGAWA YOSHIHISA
ABE TAKANORI
BAMBA TAKAHIRO
KAGAWA YOSHIHISA
ABE TAKANORI
Application Number:
JP2018069445A
Publication Date:
October 17, 2019
Filing Date:
March 30, 2018
Export Citation:
Assignee:
NIDEC SERVO CORP
International Classes:
F04D25/16; F04D19/02; F04D29/00; F04D29/38; F04D29/52; H02K11/33
Attorney, Agent or Firm:
Nidec Corporation