Patent · US Expired

Electric machine with improved cooling feature

US6731028B2 · kind B2 · utility

15Cited by

11References

12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Erhard Derleth · Großwenkheim, DE
Klaus Greubel · Bad Neustadt an der Saale, DE
Klaus Happel · Bastheim, DE
Bruno Heim · Großeibstadt, DE
Felix Ludwig · Bad Kissingen, DE
Thomas Niklaus · Bad Neustadt an der Saale, DE
Jochen Pecher · Heustreu, DE

Key dates

Filing date	Sep 20, 2001
Grant date	May 4, 2004
Priority date	—
Expiry date	Sep 20, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH02K5/203
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric machine, includes a stator with a laminated stator body having winding end portions potted in a cast, and a rotor for interaction with the stator. In order to cope with the increased heat development in the zone of the winding end portions compared to the zone of the stator body, the cast of the winding end portions is formed with surface-enlarging structures in heat-conducting contact with a cooling jacket or with a cooling medium, and/or the cast is provided at least partially with a heat-conducting envelope which carries off heat.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.