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Electric motor

A technology of electric motors and electronic devices, which is applied in the field of electric motors and can solve problems such as the accumulation of waste heat

Active Publication Date: 2014-11-26
GRUNDFOS HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Especially when frequency converters are installed in the electronics housing, this creates problems mainly because a large amount of waste heat accumulates in the electronics housing to be dissipated

Method used

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Embodiment Construction

[0036] The electric motor according to the invention shown in the figure has a stator housing 2 in which a stator 4 is arranged, inside which a rotor with a rotor shaft 6 is rotatably located. A rotor shaft 6 protrudes outwardly from the stator housing 2 in the direction of the axis of rotation X for connection to external components such as a pump unit. An electronics housing 8 is arranged on the outer circumference of the stator housing 2 on the radial side with respect to the axis of rotation X. FIG. The electronics housing 8 is composed of two parts, including a lower part 8a and a cover 8b. The lower part 8 a is mounted with its bottom surface on the circumferential side of the stator housing 2 . The upper part of the lower part 8a facing away from the stator housing 2 is closed by a cover 8b. The stator housing 2 , the lower part 8 a of the electronics housing 8 and preferably also the cover 8 b of the electronics housing are preferably made of metal, for example an al...

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PUM

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Abstract

The electromotor has a stator housing (2) and an electronic housing (8), where a portion of the electronic housing is arranged radially to the stator housing. A fan is arranged on an axial end (22) of the stator housing. The electronic housing extends beyond the axial end of the stator housing along an axial direction such that another portion of the electronic housing is arranged in an interior of one of heat-generating electronic components and positioned radially to the fan. The heat-generating electronic components generate heat in the interior of the electronics housing.

Description

technical field [0001] The invention relates to an electric motor and to a pump assembly having such an electric motor as drive motor. Background technique [0002] The electric motor usually has a stator housing and a terminal box or electronics housing in which the electrical components and in particular the electronics for controlling the electric motor are arranged. It is known here that such an electronics housing is arranged on the circumferential or radial side of the stator housing. In this case, the length of the electronics housing is usually less than or equal to the length of the stator housing. In order to dissipate the waste heat accumulated in the stator housing and the electronics housing, a ventilation device for cooling the electric motor is usually provided at the first axial end of the stator housing. Cooling ribs can be provided on the electronics housing and / or on the stator housing, through which the airflow generated by the fan flows in a cooling ma...

Claims

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Application Information

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IPC IPC(8): H02K5/18H02K11/00
CPCH02K5/18H02K9/06H02K11/0073H02K11/0141H02K11/33
Inventor 帕勒·曼德森·欧贝尔拉尔斯·厄斯特高
Owner GRUNDFOS HLDG