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A cooling structure to balance the air pressure inside the base

A cooling structure and machine base technology, applied in cooling/ventilation devices, magnetic circuit shape/style/structure, electromechanical devices, etc., can solve the problem of unreasonable motor air path layout, small air volume far away, large air volume near the air inlet, etc. problems, to achieve good ventilation and overall heat dissipation, optimized air volume and pressure, and reasonable air volume distribution

Active Publication Date: 2021-04-02
CRRC YONGJI ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve a series of technical problems such as the large air volume near the air inlet and the small air volume far away due to the unreasonable layout of the air passage of the motor, the present invention provides a cooling structure for balancing the internal air pressure of the machine base.

Method used

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  • A cooling structure to balance the air pressure inside the base
  • A cooling structure to balance the air pressure inside the base
  • A cooling structure to balance the air pressure inside the base

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Embodiment Construction

[0026] The axial air duct on the circumference of the stator 12 includes several waist-shaped air ducts 2 arranged at intervals around the center of the stator 12; the aperture of the waist-shaped air duct 2 positioned at the bottom of the stator 12 is larger than the waist-shaped air duct 2 positioned at the upper part of the stator; The air channel 2 is opened on the body of the stator punching plate.

[0027] Such as figure 2 As shown, the aperture of the waist-shaped ventilation channel 2 gradually increases from top to bottom; the top of the stator 12 has a semicircular marking groove 4 between the two waist-shaped ventilation channels 2; A circular lightening hole 1 is also arranged.

[0028] Such as figure 1 As shown, the sealing ring 13 extends obliquely from the inner side of the air inlet end cover near its center to the direction of the stator, forming a flaring structure, and then extends horizontally to the stator teeth and seals the rotor with the stator teet...

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Abstract

A cooling structure for balancing the air pressure inside a machine base, comprising a machine base (8), and an air inlet end cover (10) and an air outlet end cover (7) respectively mounted at the front and rear ends of the machine base (8). A stator (12) is provided in the machine base (8). The top of the base (8) close to the front end thereof is provided with an air inlet (9). The inner side of the inlet end cover (10) extends out of a sealing ring (13) toward stator teeth to seal a rotor. The sealing ring (13) and the inlet end cover (10) form a V-shaped air path structure. The structure combines the advantages of axial ventilation holes, optimized air volume and air pressure, and small space occupied. The structure can be widely used in the field of locomotive direct drive traction motors. In particular, when there is a high requirement for the space at the bottom of the locomotive and a user cannot provide a large air pressure, the structure has significant advantages.

Description

technical field [0001] The invention relates to a ventilation cooling structure for a motor, in particular to a cooling structure for balancing the wind pressure inside a machine base. Background technique [0002] With the continuous development of the industry, freight locomotives require continuous increase in power and torque, and the volume and weight of the car body are limited, resulting in a smaller installation space for equipment on the car body. This requires traction motors to have strong cooling and heat dissipation capabilities, small size, and low weight. light features. The punched sheet and the iron core made of the punched sheet are the magnetizer of the motor and the medium for electromechanical energy conversion. The quality of its structure directly affects the performance of the motor. In order to meet the volume, weight, ventilation and heat dissipation requirements of the traction motor, it is necessary to invent a new stator ventilation and cooling ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K9/10H02K5/20H02K1/20
CPCH02K1/20H02K5/20H02K9/10
Inventor 吴楠孙德强屈斌张江涛倪伟
Owner CRRC YONGJI ELECTRIC CO LTD
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