US 11,852,157 B2
Blower
Kenji Suzuki, Ohme (JP); and Satsuki Yuzuki, Ohme (JP)
Assigned to YAMABIKO CORPORATION
Filed by YAMABIKO CORPORATION, Tokyo (JP)
Filed on Jan. 12, 2023, as Appl. No. 18/153,445.
Claims priority of application No. 2022-011252 (JP), filed on Jan. 27, 2022.
Prior Publication US 2023/0235747 A1, Jul. 27, 2023
Int. Cl. F04D 29/28 (2006.01); A01G 20/47 (2018.01)
CPC F04D 29/281 (2013.01) [A01G 20/47 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A blower, comprising:
a blower main body having a front side, a rear side, a left side, a right side, a top side, and a bottom side, the left and right sides having first and second ventilation portions, respectively;
a centrifugal fan provided at an inner space of the blower main body; and
a motor fixed to the centrifugal fan, a frame of the motor being positioned at an inside of the centrifugal fan between a right edge and a left edge of the centrifugal fan when viewed along a first direction facing the top side of the blower main body,
wherein the centrifugal fan includes a support plate having a rotation axis, and the support plate has first and second surfaces outwardly opposite to each other,
the centrifugal fan includes a plurality of first blades and a plurality of second blades provided on the first surface and the second surface of the support plate, respectively, and
a position of at least part of the plurality of first blades and a position of at least part of the plurality of second blades are misaligned in a circumferential direction, and/or a number of the plurality of first blades differs from a number of the plurality of second blades.