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1. (WO2018108492) ELECTRIC DRIVE MOTOR AND DOMESTIC APPLIANCE OR MOTOR MODULE SYSTEM CONTAINING SAME

Pub. No.:    WO/2018/108492    International Application No.:    PCT/EP2017/080407
Publication Date: Fri Jun 22 01:59:59 CEST 2018 International Filing Date: Sat Nov 25 00:59:59 CET 2017
IPC: H02K 1/27
H02K 15/03
H02K 1/28
Applicants: BSH HAUSGERÄTE GMBH
Inventors: BÖTTGER, Torsten
SEUBERT, Joachim
WALTER, Axel
Title: ELECTRIC DRIVE MOTOR AND DOMESTIC APPLIANCE OR MOTOR MODULE SYSTEM CONTAINING SAME
Abstract:
The invention relates to an electric drive motor comprising a stator with teeth and grooves, and a permanent magnet rotor (1) that has a motor shaft and a laminated core (2) which is seated on said motor shaft and has at least a number of pockets (5) that corresponds to the number of poles (4) of the permanent magnet rotor (1), with a permanent magnet (6) being positioned in the radial direction in each pocket, said permanent magnets (6) being distributed with alternating polarity in the circumferential direction of the permanent magnet rotor (1) and being magnetised in the tangential direction such that a magnetic flux proceeding from each permanent magnet (6) runs in the tangential direction of the permanent magnet rotor (1), and the permanent magnets (6) extend in the axial direction of the permanent magnet rotor (1) beyond the laminated core (2), wherein a segment (11) of the laminated core (2) is disposed between each set of adjacent pockets (5) and designed to concentrate the magnetic flux of the respective permanent magnets (6) in an air gap (7) between the stator and said permanent magnet rotor (1), the laminated core (2) forming a web part (8) extending in the axial direction of the permanent magnet rotor (1), over each permanent magnet (6) respectively on the side of the air gap (7), and said web part (8) interconnecting two segments (11) of the laminated core (2) and comprising web elements (9) and web recesses (10). The invention also relates to a domestic appliance or motor module system containing such a drive motor.