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:
Jul. 22, 2014
Filed:
Jan. 26, 2010
Wei Cai, Beijing, CN;
Yi Zheng, Beijing, CN;
Xinglian Yuan, Beijing, CN;
Jing-Jin Electric Technologies (Beijing) Co., Ltd., Beijing, CN;
Abstract
An electrical machine including a casing (), an oil inlet hole (), an oil passage (), oil outlet holes (), a stator retainer (), a casing end cover (), a stator iron core (), winding coils (), slot insulations () and oil-guides (). The oil passage () is located inside the casing () and links with the oil inlet hole () of the casing () and the oil outlet holes () of the stator retainer (). The oil outlet holes () are located above the winding coils () and the oil-guides () are located between the oil outlet holes () and the winding coils (). Oil entering from the oil inlet hole () pours onto the winding coils () by the guidance of the oil-guides () after flowing through the oil passage () and flowing out of the oil outlet holes (). The winding coils of the electrical machine can be effectively cooled and the electrical machine can achieve higher thermal durability. An oil cooling method for the electrical machine is also provided.