Unlock instant, AI-driven research and patent intelligence for your innovation.

Internal rotor motor

An inner rotor motor and motor technology, which is applied in the field of electronically commutated inner rotor motors, can solve the problems of debris at the connection and unreliable connection operation methods, etc., and achieve the effect of reliable connection

Active Publication Date: 2014-04-02
EBM PAPST ST GEORGEN & -
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Debris at the junction
[0007] 2. Since the hardness fluctuations of the materials are correlated with each other, the connection operation is not reliable in terms of method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Internal rotor motor
  • Internal rotor motor
  • Internal rotor motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 A cross section is schematically depicted, which extends perpendicularly to the shaft 18 through a three-phase inner rotor motor 20 with a shell-shaped housing 24 . The laminated core 27 of the outer stator 28 is arranged therein. The outer stator 28 has an inner opening 34 in which an eight-pole inner rotor 36 is arranged on the shaft 18, the eight-pole inner rotor 36 having a stack 37 of rotor laminations 41 (in image 3 schematically depicted in ) and has a total of eight permanent magnets 38A to 38H (see Figures 1 to 3 ). A magnetically effective air gap 32 separates the stator 28 from the rotor 36 . Such motors can be referred to in various ways, such as "permanent magnet excited synchronous inner rotor machines", or "electronically commutated sine wave motors", or simply "three-phase motors". which can be supplied with electricity, for example, from a three-phase grid, or by figure 1 A suitable three-phase inverter 25 is shown in the example.

[00...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An internal rotor motor, in particular an electronically commutated internal rotor motor, has a multi-pole stator (28) and a laminated rotor core (52, 54, 56) which is mounted such that it can rotate relative to said stator (28), and also has a central recess (47) which is provided in the laminated rotor core, wherein the laminated rotor core has individual laminations (41) and the central recesses (47) in said individual laminations have radially inner first sections (50) into which a shaft (18) is pressed, and said central recesses (47) have second sections (51) in the regions between the radially inner first sections (50), said second sections being spaced apart from the outside of the shaft (18) in the assembled state, wherein at least some of the individual laminations (41) of the laminated rotor core (52) are arranged with an angular offset in relation to one another.

Description

technical field [0001] The present invention relates to an inner rotor motor, in particular to an electronically commutated inner rotor motor. Background technique [0002] Such motors have a rotor, usually in the form of a rotor lamination, in which permanent magnets are embedded. The rotor is connected to the shaft to transmit torque in the shaft / rotor system. [0003] If the shaft is press-fit directly into the rotor, excessive press-fit forces can be generated during manufacture, which can damage or destroy the rotor on the one hand, and can also cause damage to the shaft, since the shaft can collapse due to excessive buckling loads. Bending thus leads to repulsion. [0004] DE 10 2006 037 804 A1 to EBM-PAPST discloses an inner rotor motor with a hollow shaft, on the outer surface of which is provided grooves for connecting the rotor. This reduces the surface pressure on the shaft and thus results in a lower press-fit force in the installation situation of the shaft, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/28
CPCH02K1/276H02K1/22H02K1/28H02K1/27
Inventor 多米尼克·法尔科阿诺尔德·舒尔德莫加巴·莫伊尼
Owner EBM PAPST ST GEORGEN & -