Patent · US Active

Electrical machine with multiple cooling flows and cooling method

US8648505B2 · kind B2 · utility

5Cited by

8References

5Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Oliver Memminger · Passau, DE
Friedrich Schöberl · Pocking, DE
Norbert Schönbauer · Annaberg-Buchholz, DE
Johann Stegner · Ruhstorf, DE
Robert Danner · Tettenweis, DE
Jürgen Draber · Passau, DE
Daniel Friedl · Fürstenzell, DE
Anatoli Vogel · Passau, DE

Key dates

Filing date	Nov 24, 2009
Grant date	Feb 11, 2014
Priority date	—
Expiry date	Aug 30, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH02K9/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electrical machine with a stator has a winding support, which has at least one radial cooling slot, and a rotor, which likewise has at least one radial cooling slot. The winding support of the stator has on its outer shell a number of axially running cooling ribs, along which an axially running first cooling flow can be directed. Furthermore, the rotor has axially running first cooling ducts, which open out into its at least one radial cooling slot, so that a second cooling flow can be directed in the axial direction along the axial cooling ribs of the stator through the axial first cooling ducts of the rotor, the at least one radial cooling slot of the rotor, the air gap between the rotor and the stator and the at least one radial cooling slot. In this way, the stator can be cooled by two different cooling flows.

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