Patent · US Active

External cooling tube arrangement for a stator of an electric motor

US9768666B2 · kind B2 · utility

6Cited by

30References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Klaus Büttner · Hollstadt, DE
Klaus Kirchner · Nidderau, DE
Norbert Wöhner · Heustreu, DE

Key dates

Filing date	Aug 15, 2012
Grant date	Sep 19, 2017
Priority date	—
Expiry date	Jan 28, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH02K9/18
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A stator for an electric motor includes a substantially hollow-cylindrical stator stack provided with wire windings and an end winding, which adjoins the stator stack in the axial direction. The stator stack includes a number of slots, wherein a coolant line is inserted into the respective slot. To improve efficiency of the electric motor, a section of the respective coolant line extends into the region of the end winding.

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