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:
Jun. 05, 2018
Filed:
Sep. 03, 2014
Siemens Aktiengesellschaft, Munich, DE;
Esteban Grau Sorarrain, Dusseldorf, DE;
Christian Jäkel, Duisburg, DE;
Mario Koebe, Mulheim an der Ruhr, DE;
Matthias Kowalski, Mulheim an der Ruhr, DE;
Christoph Lehmann, Neukirchen-Vluyn, DE;
Andrey Mashkin, Cologne, DE;
Olga Plotnikova, Wuppertal, DE;
Carolin Schild, Mulheim an der Ruhr, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A cooling device for an electric motor includes at least one closed capillary tube, within which a cooling fluid is located and which is introduced into an opening of a lamination stack of the electric motor such that the capillary tube is connected to the lamination stack to conduct heat and partially projects out of the lamination stack, such that the capillary tube has a cold end disposed outside and a hot end disposed inside the lamination stack. The cooling fluid and the degree of filling of the capillary tube with the cooling fluid is chosen such that an input of heat from the lamination stack into the capillary tube leads to evaporation of the cooling fluid, and the cold end of the capillary tube is cooled such that vapor produced during the evaporation condenses and heat input into the capillary tube is dissipated out of the capillary tube.