US 11,808,284 B2
Blower
Sho Koyama, Osaka (JP); and Masao Kojima, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/755,224
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Aug. 28, 2020, PCT No. PCT/JP2020/032538
§ 371(c)(1), (2) Date Apr. 24, 2022,
PCT Pub. No. WO2021/090557, PCT Pub. Date May 14, 2021.
Claims priority of application No. 2019-202824 (JP), filed on Nov. 8, 2019.
Prior Publication US 2022/0403855 A1, Dec. 22, 2022
Int. Cl. F04D 29/70 (2006.01); F04D 17/16 (2006.01); F04D 25/06 (2006.01); F04D 29/056 (2006.01); F04D 29/28 (2006.01); F04D 29/42 (2006.01)
CPC F04D 29/703 (2013.01) [F04D 17/16 (2013.01); F04D 25/06 (2013.01); F04D 29/056 (2013.01); F04D 29/281 (2013.01); F04D 29/4226 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A blower comprising a fan and a motor, wherein
the motor includes:
a shaft including an axis;
a bearing that supports the shaft; and
a motor case that covers at least a part of the bearing,
wherein:
the fan includes:
a main plate having a first surface facing the motor case and a second surface opposite to the first surface, and connected to the shaft; and
a plurality of blades erected on the second surface of the main plate, and arranged radially with respect to the axis included in the shaft,
at least one of the fan and the motor case includes one or more blocking members, the one or more blocking members being configured to prevent entry of minute foreign matters,
the one or more blocking members are located apart from the shaft in a radial direction orthogonal to the axis between the first surface of the main plate and the motor case, and surround the shaft,
in the main plate, one or more through holes penetrating between the first surface and the second surface are formed between the axis included in the shaft and a region where the plurality of blades are erected, and
the one or more blocking members are disposed at positions closer to the shaft than the one or more through holes are.