US 11,898,576 B2
Centrifugal fan and air conditioning apparatus
Huanwen Huang, Dongguan (CN); Hsienchou Lin, Shenzhen (CN); and Jingyi Luo, Foshan (CN)
Assigned to Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN); and Fans-tech Electric Co., Ltd., Foshan (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN); and Fans-tech Electric Co., Ltd., Foshan (CN)
Filed on Dec. 10, 2021, as Appl. No. 17/548,228.
Application 17/548,228 is a continuation of application No. PCT/CN2020/109648, filed on Aug. 17, 2020.
Claims priority of application No. 202020229013.7 (CN), filed on Feb. 29, 2020.
Prior Publication US 2022/0099106 A1, Mar. 31, 2022
Int. Cl. F04D 29/44 (2006.01); F04D 17/16 (2006.01); F04D 25/06 (2006.01); F04D 29/62 (2006.01)
CPC F04D 29/441 (2013.01) [F04D 17/16 (2013.01); F04D 25/06 (2013.01); F04D 29/624 (2013.01)] 15 Claims
OG exemplary drawing
 
9. An air conditioning apparatus comprising: a centrifugal fan, wherein the centrifugal fan comprises:
a top plate;
a baseplate with a motor mounting hole;
a plurality of blades disposed between the top plate and the baseplate, wherein the plurality of blades are separately fastened to the top plate and the baseplate, and the plurality of blades are disposed around the motor mounting hole;
a motor with a motor housing, wherein the motor housing is mounted on the motor mounting hole and is fixedly connected to the baseplate, and the motor housing at least partially extends between the baseplate and the top plate;
a flow guiding cover detachably mounted on the baseplate, wherein the flow guiding cover is sheathed on an outer peripheral side of the motor housing, and the flow guiding cover comprises at least two stacked sub flow guiding covers which are sequentially stacked along a direction away from the baseplate; and
wherein a highest point of the flow guiding cover is substantially flush with a lowest point of an edge of a rounded corner at a top of the motor housing.