The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2018
Filed:
Aug. 01, 2014
Gree Electric Appliances, Inc. of Zhuhai, Zhuhai, Guangdong, CN;
Zhao Fan, Guangdong, CN;
Yabin Ding, Guangdong, CN;
Ying Chen, Guangdong, CN;
Huaican Liu, Guangdong, CN;
Abstract
A stator and a rotor are mounted inside a case of the permanent magnet motor, and separate the inner cavity of the case into a first inner cavity and a second inner cavity. Axial ventilation holes in communication with the first inner cavity and with the second inner cavity, are disposed in teeth of a stator core of the stator, and each axial ventilation hole is a taper hole extending in a height direction of each tooth. The width of one end of the axial ventilation hole, which is close to a head of the tooth, is greater than the width of the other end of the axial ventilation hole, which is close to a root of the tooth. The taper holes enable fluid to fully carry out exchange heat at the teeth where heat is generated most intensively.