Patent · US Active

Electrical motor having radially offset cooling stream and cooling method

US8686607B2 · kind B2 · utility

8Cited by

5References

7Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Gunther Elender · Kaufbeuren, DE
Oliver Memminger · Passau, DE
Norbert Schönbauer · Annaberg-Buchholz, DE
Karl Senninger · Egglham, DE

Key dates

Filing date	Nov 24, 2009
Grant date	Apr 1, 2014
Priority date	—
Expiry date	May 24, 2030

Classification

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

Abstract

The rotor of an electrical motor should be designed simply and able to be efficiently cooled. To this end, the invention relates to an electrical motor having a rotor that has at least one radial cooling slot (16) and axially running cooling channels. The first cooling channels (18) run having their central axis at a different radial height opposite the axis of the rotor (11) than the second cooling channels (19). A spacer (29) is arranged in the at least one radial cooling slot (16) by means of which a first cooling stream (28) can be conducted from one of the first cooling channels (18) into one of the second cooling channels (19). A second partial package (T2) in the flow direction can also be supplied with cool air in this way if it flows through the first partial package (T1) in a cool region, such as near the shaft.

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