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Inner ventilated motor

A technology of electric motor and internal air, which is applied in the direction of electric components, electrical components, electromechanical devices, etc., to achieve the effect of short heat flow path, reduced external size and weight, and high protection performance

Inactive Publication Date: 2010-06-23
昆明电机厂有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the second structure is not suitable for sites with poor environment and high protection requirements

Method used

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Embodiment Construction

[0011] Such as figure 1 As shown, the present invention includes a motor central shaft 7, a motor rotor 3 sleeved on the central shaft, a stator 2, a left end cover 3 and a right end cover 4 packaged at both ends of the rotor and the stator. In the present embodiment, fan 6 is arranged on the outer end of the right end cover, and is covered with wind cover 5 . On the yoke of the stator core, there is a through stator air guide hole 8 in the axial direction, and correspondingly, on the left end cover 3 and the right end cover 4, there is a through end cover air guide hole that is connected with the stator air guide hole in the axial direction. 9, 9', end cover air guide holes 9, 9' are annular air guide holes. Such as figure 2 As shown, the stator air guide hole 8 surrounds the stator core and is opened on the yoke of the same width as the stator iron core. In the stator air guide hole 8, a radial partition 10 penetrating the axial direction is arranged. Between the radial p...

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Abstract

The invention discloses an inner ventilated motor, comprising a central shaft (7), a stator (2), a rotor (3), a left end cap (3) and a right end cap (4), wherein the yoke part of a stator iron core is provided with a penetrating stator ducting hole (8) in the axial direction, and the left end cap (3) and the right end cap (4) are provided with penetrating end cap ducting holes (9, 9') which are in butt joint with the stator ducting hole in the axial direction. The invention combines the advantages of sealed external cooling structure with opening direct cooling structure and has favorable repellency and cooling effect.

Description

technical field [0001] The invention belongs to the technical field of electric motor structure. Background technique [0002] The cooling mode of the existing motor is generally fan self-cooling. There are two commonly used cooling structures. The first is a closed external cooling structure. The heat in the motor winding passes through the iron core, the gap between the iron core and the frame or the insulating layer, the frame, the surface of the frame, etc. and the cold air. Carry out energy conversion and take away heat. The second type is an open direct cooling structure. Some of the heat in the motor winding directly forms convective energy transfer with the air, and some passes through the iron core, and the iron core forms convective energy exchange with the air in the radial direction to take away heat. The second structure has a higher specific power density due to its good heat dissipation effect. In the same frame size, the output power is more than one level ...

Claims

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Application Information

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IPC IPC(8): H02K9/02
Inventor 韦文云
Owner 昆明电机厂有限责任公司
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