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breathing motor

A motor and air guide technology, applied in the field of motors, can solve the problems that the cooling performance of motors is heavily dependent on the direction of rotation of the rotor, the motor has a small load capacity, high development, production and storage costs, etc.

Active Publication Date: 2016-06-22
BROSE FAHRZEUGTEILE GMBH & CO KG HALLSTADT (DE)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] On the downside, the cooling performance of such self-cooling electric motors is heavily dependent on the direction of rotation of the rotor
This leads to different motor types being often developed and manufactured for applications with different main directions of rotation, which leads to relatively high development, production and storage costs
[0006] Furthermore, conventional electric motors with self-cooling often have a relatively poor and uneven cooling performance, which can lead to localized overheating of the motor and a correspondingly low load-carrying capacity of the motor

Method used

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Examples

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Embodiment Construction

[0033] figure 1Fans 1 for a radiator of a motor vehicle are shown separated from one another. The fan 1 comprises a fan wheel 2 with a shroud 3 around the outer periphery of which seven (only the beginning is shown) air guide vanes 4 are evenly arranged. Furthermore, the fan 1 should comprise a (fan) motor 5 by means of which the fan impeller 2 is driven in rotation.

[0034] The electric machine 5 comprises a (hollow-cylindrical for simplicity) stator 6 , which is wound by a three-phase rotating field winding 7 . Furthermore, the electric machine 5 includes a (disc-shaped for simplicity) permanently excited rotor 8 , which is mounted rotatably about a machine axis 9 inside the stator 6 . To support the rotor 8 , the electric machine 5 includes two roller bearings 10 and 11 , which act on the rotor 8 from axially opposite sides. Here, the axial play of the rotor 8 between the two rolling bearings 10 and 11 is spring-loaded by means of spring coils 12 .

[0035] Furthermore...

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PUM

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Abstract

An electric motor (5) with high efficiency self-cooling is provided. The electric motor (5) includes a rotor (8) mounted rotatably relative to the stator (6). Here, a first air-guiding contour ( 20 a ) is formed on a first partial section ( 23 a ) of the end face ( 19 ) of the rotor ( 8 ), which first air-guiding contour ( 20 a ) is formed on the rotor ( 8 ) in the reference direction of rotation. (R) Rotation creates an outwardly directed air flow (S). On the second partial section ( 23b ) of the same end face ( 19 ), a second air-guiding contour ( 20b ) is formed, which is produced when the rotor ( 8 ) rotates in the reference direction of rotation ( R ) Inwardly directed air flow (S).

Description

technical field [0001] The invention relates to a motor, especially a self-cooling brushless motor. Background technique [0002] Electric motors generally comprise a rotor (or mover) that is rotatably mounted relative to a stationary stator (or stator). In brushless motors, the stator is usually equipped with a rotating field winding through which a rotating field is generated by applying an alternating current to the rotating winding. The rotor, which is often arranged inside the stator, is generally equipped with permanent magnets, which generate an excitation field that interacts with the rotating magnetic field of the stator. [0003] In brushless motors, the alternating current provided for supplying the stator windings is usually generated by means of inverter electronics (also referred to below as inverter). In smaller electric motors, the inverter is often accommodated together with the associated control electronics in an electronics compartment which is integrat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K9/06H02K11/00
CPCH02K1/22H02K3/522H02K5/10H02K11/33H02K9/06H02K9/00H02K5/207H02K1/2706H02K1/32
Inventor 托比亚斯·希伦布兰德
Owner BROSE FAHRZEUGTEILE GMBH & CO KG HALLSTADT (DE)
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