US 12,078,182 B2
Direct current induced draft fan
Yanhu Lin, Zhongshan (CN); Wei Wang, Zhongshan (CN); Zhicheng Liang, Zhongshan (CN); Xiaolei Kang, Zhongshan (CN); Miao Zhang, Zhongshan (CN); Jianwei Zha, Zhongshan (CN); and Zhihan Wu, Zhongshan (CN)
Assigned to ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD., Zhongshan (CN)
Filed by Zhongshan Broad-Ocean Motor Co., Ltd., Zhongshan (CN)
Filed on Jun. 15, 2022, as Appl. No. 17/841,650.
Application 17/841,650 is a continuation in part of application No. PCT/CN2021/079553, filed on Mar. 8, 2021.
Claims priority of application No. 202023048756.3 (CN), filed on Dec. 17, 2020.
Prior Publication US 2022/0307507 A1, Sep. 29, 2022
Int. Cl. F04D 25/06 (2006.01); F04D 29/44 (2006.01); F04D 29/62 (2006.01); H02K 5/22 (2006.01); H02K 11/33 (2016.01)
CPC F04D 25/068 (2013.01) [F04D 25/0693 (2013.01); F04D 29/441 (2013.01); F04D 29/624 (2013.01); H02K 5/22 (2013.01); H02K 11/33 (2016.01)] 6 Claims
OG exemplary drawing
 
1. A direct current induced draft fan, comprising:
a volute;
a wind wheel;
a motor comprising a motor body and a motor controller; and
a locking assembly;
wherein:
the motor is disposed on a top of the volute, and the wind wheel is disposed in the volute;
the motor is configured to drive the wind wheel to rotate;
the motor controller is disposed on one side of the motor body and is fixed on the motor body through the locking assembly;
a side plate of the motor controller extends from the motor body to the volute;
the motor body comprises a stator assembly, a rotor assembly, a rotating shaft, and a housing; the rotor assembly is disposed on the rotating shaft; the stator assembly is nested in the housing; the rotor assembly is nested in the stator assembly; the housing comprises an end cover on one end; and the motor controller is fixed on the end cover through the locking assembly;
the motor controller comprises a control box and a control circuit board disposed in the control box; the control box comprises an end plate and the side plate extending from an outer edge of the end plate along an axial direction of the rotating shaft; the end plate is fixed on the end cover through the locking assembly; and the side plate extends in a direction from the end cover to the volute;
the side plate comprises an inner plate, an outer plate, a first side plate, and a second side plate; the first side plate is disposed between the inner plate and the outer plate and connects a first end of the inner plate and a first end of the outer plate; the second side plate is disposed between the inner plate and the outer plate and connects a second end of the inner plate and a second end of the outer plate; the end plate, the inner plate, the outer plate, the first side plate, and the second side plate form a cavity; and the control circuit board is disposed in the cavity and fixed on the end plate; and
the inner plate comprises an inner arc segment and two inner linear segments respectively disposed on two ends of the inner arc segment; the housing further comprises a cylindrical body, and the end cover is disposed on one end of the cylindrical body; and the inner arc segment abuts against the cylindrical body.