Patent · US Active

Cooling device for an electric motor and electric motor with cooling device

US11289977B2 · kind B2 · utility

1Cited by

12References

32Claims

0Family size

Assignee

ZIEHL-ABEGG SE · DE

Inventors

Frieder Lörcher · Braunsbach, DE
Lothar Ernemann · Heilbronn, DE

Key dates

Filing date	Dec 11, 2017
Grant date	Mar 29, 2022
Priority date	—
Expiry date	Apr 1, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2213/03
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The cooling device is intended for an electric motor and has a rotor cooling flange and a stator cooling flange (2), of which one is rotatable with respect to the other. At least one of the two cooling flanges (2) is provided with cooling ribs (8) arranged distributed over its circumference. During operation of the electric motor, at least one of the two cooling flanges gives off heat to the surrounding air. At least some of the cooling ribs (8) of a heat-emitting cooling flange (2) have an undulating profile over their length. In this context, the surface area of a cooling rib (8) having an undulating profile is larger than the surface area of the associated straight reference rib.

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