Rotor punched sheet air path structure

Abstract

The invention discloses a rotor punched sheet air path structure. Outer radial air paths are formed in the outer circumferential surfaces of rotor punched sheets at two sides, and therefore, a ventilation area is greatly increased, and wind resistance is reduced; large ventilation flow can be obtained by means of the rotation of a rotor, so that a good cooling effect can be obtained; an axial airpath is formed in a rotor punched sheet at an air incoming side; and the rotor punched sheets of different structures are superimposed on one another, so that the distribution of ventilation flow canbe realized, and therefore, the air incoming end and air outgoing end of a motor can both enable an effective cooling effect, and temperature distribution is uniform and reasonable, and the service life of the insulation of the motor can be prolonged. The motor cooling air path structure is of simplicity and enables a good cooling effect. With the motor cooling air path structure adopted, the design of a motor structure with a larger load capacity can be possible.

Description

technical field [0001] The invention relates to a wind path structure for punching a rotor used in the technical field of motors. Background technique [0002] In order to increase the power density of the motor in the design of large and medium-sized motors, it is generally necessary to design the motor as compact and simple as possible, without using other cooling systems, and the common cooling medium is air, so the design of the internal ventilation structure of the motor is particularly important. In the traditional single air path motor design scheme, the cooled air enters the motor from the motor air inlet at the shaft extension end and is divided into two paths. The air from the main air path enters the rotor ribs and is transported to the stator through the radial air path under the action of the rotor rotation. , and flow out from the back of the stator through the stator air duct; a small amount of air directly enters the air gap between the stator and the rotor t...

AI Technical Summary

Problems solved by technology

[0004] 1 The rotor needs to be equipped with more radial air ducts, and the process is complex and labor-intensive

[0005] 2 The mechanical loss generated by the radial air duct of the rotor is relatively large, which reduces the efficiency of the motor

[0006] 3 The loss caused by the radial air duct of the rotor makes the gap between the front and rear ends of the motor significantly different in the amount of cooling air delivered, resulting in uneven cooling effects on both sides

[0007] 4 The wind speed in the radial air duct of the rotor is relatively high, resulting in relatively large aerodynamic noise

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