Patent · US Active

Electric motor with heat dissipation for the motor shaft bearing

US11742715B2 · kind B2 · utility

0Cited by

4References

16Claims

0Family size

Assignee

ebm-papst St. Georgen GmbH & Co. KG · DE

Inventors

Michael Kisch · St. Georgen, DE
Wilhelm Weisser · Warnekow, DE
Jochen SCHEFFCZYK · Villingen-Schwenningen, DE
Hassan Ghodsi-Khameneh · Offenburg, DE
Daniel Hauer · Ortenberg, DE
Marcus HELLMANN · Unterkirnach, DE
Alexander Zwetkow · Rottweil, DE

Key dates

Filing date	Aug 20, 2019
Grant date	Aug 29, 2023
Priority date	—
Expiry date	Jun 4, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2211/03
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A motor housing (2) has a shaft section to receive a motor shaft (4) and a motor section to receive motor electronics (5) and motor windings (6). The shaft section and the motor section are separated from each other in a sealed manner by a separating pot (7) arranged in the motor housing (2). A metal ball bearing pot (8) with a ball bearing (9) is arranged in the separating pot. The ball bearing pot (8) lies indirectly against a motor housing section that is connected to the outer surroundings, via the separating pot (7). Thus, the motor housing functions as a cooling body. Accordingly, heat generated by the ball bearing (9) during operation is dissipated onto the motor housing and the outer surroundings, via the ball bearing pot (8) and the separating pot (7).

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