US 12,266,974 B2
Stator assembly, electrical motor, wind power generator set and method for cooling stator assembly
Shengjun Ma, Beijing (CN)
Assigned to BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT. CO., LTD., Beijing (CN)
Filed by BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD., Beijing (CN)
Filed on Dec. 6, 2022, as Appl. No. 18/075,861.
Application 18/075,861 is a division of application No. 17/043,225, granted, now 11,552,511, previously published as PCT/CN2019/104153, filed on Sep. 3, 2019.
Claims priority of application No. 201811074884.X (CN), filed on Sep. 14, 2018.
Prior Publication US 2023/0101634 A1, Mar. 30, 2023
Int. Cl. H02K 1/20 (2006.01); H02K 1/18 (2006.01); H02K 9/10 (2006.01); H02K 9/22 (2006.01)
CPC H02K 1/20 (2013.01) [H02K 1/18 (2013.01); H02K 9/10 (2013.01); H02K 9/227 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A stator assembly, comprising:
a stator bracket;
a stator core;
an airflow delivering unit; and
at least one bridging portion;
wherein:
the stator bracket comprises a support enclosure plate;
the stator core is mounted on the support enclosure plate;
a first axial airflow channel is formed between the support enclosure plate and a radial side surface of the stator core;
the airflow delivering unit is configured to supply a first airflow to the first axial airflow channel, the first airflow flowing in an axial direction of the first axial airflow channel;
the at least one bridging portion is provided in the first axial airflow channel, the bridging portion extending in a radial direction of the stator assembly; and
the airflow delivering unit comprises a vortex tube comprising:
a vortex chamber; and
a nozzle in communication with the vortex chamber tangentially in a radial direction of the vortex chamber.