Patent · US Active

Reel motor with closed cooling circuit

US11999574B2 · kind B2 · utility

0Cited by

6References

15Claims

0Family size

Assignee

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

Inventors

Tobias Sieger · Geisingen, DE
Johannes Fehrenbach · Unterkirnach, DE
Jörg Hornberger · Dornstetten, DE
Markus Flaig · Remshagen, DE

Key dates

Filing date	May 16, 2019
Grant date	Jun 4, 2024
Priority date	—
Expiry date	Dec 13, 2041

Classification

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

Abstract

A reel motor (1) for a driven conveyor roller has a stator (11) that is surrounded by a stator housing (10). A rotor (12) drives a rotor shaft (13). A tubular external housing (30) runs around the stator housing (10) at a distance in the circumferential direction. A cooling duct (20) is fluidically connected to an interior of the stator housing (10) holding the stator (11). The cooling duct 20 is formed between the external housing (30) and the stator housing (10). An impeller wheel (14) is secured to the rotor shaft (13). The impeller wheel generates a cooling air flow (K). The interior of the stator housing (10) and the cooling duct (20) determine a closed cooling circuit. The cooling air flow is guided through the closed cooling circuit.

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