Enhanced ventilation slotted vane

Abstract

The invention discloses an enhanced ventilation slotted vane which is composed of a fanning strip, ventilation channel steel, a lining opening ring and heat dissipation fins. According to the invention, the heat dissipation capability of the ventilation ducts formed by the ventilation slotted vanes is greatly enhanced.

Description

Technical Field

[0001] The invention relates to the field of motors, and in particular to an enhanced ventilation slot sheet. Background Art

[0002] At present, the stator core of the motor with radial ventilation is assembled and pressed by fan-shaped silicon steel sheets, ventilation slot sheets, positioning ribs, tooth pressure plates, tension screws and fixing sheets. The ventilation slot sheets and the adjacent upper and lower fan-shaped silicon steel sheets form the stator core ventilation groove. The cooling air flows from the inner diameter of the stator through the ventilation groove to the outer diameter of the stator to cool the stator core of the motor, and then cools the stator coil of the motor. Its ventilation slot sheet is composed of fan-shaped sheets, ventilation slot steel and lining ring. Reducing the thermal resistance between the ventilation slot sheet and the air in the ventilation groove is an effective means to reduce the temperature rise of the motor. Researchers in motor cooling technology have been working in this area. The usual way is to increase the wind speed in the ventilation groove. In order to reduce the thermal resistance between the ventilation slot sheet and the air in the ventilation groove. There are usually two ways, one is to increase the wind speed in the ventilation groove to improve the heat transfer coefficient; the other is to increase the heat dissipation area and reduce the thermal resistance. In the prior art, the heat flow on the core is only exchanged between the core surface and the air, and there is only one heat path. Summary of the invention

[0003] In view of this, the purpose of the present invention is to reduce the thermal resistance between the ventilation slot and the air in the ventilation groove and provide an enhanced ventilation slot. The technical solution of the present invention is: it is composed of a fan-shaped sheet, a ventilation channel steel, a lining ring and a heat dissipation fin, the ventilation channel steel and the lining ring are fixed on the fan-shaped sheet, and the heat dissipation fin is fixed on the ventilation channel steel. The number, size and shape of the ventilation channel steel on a single tooth of the fan-shaped sheet are determined by the designed capacity and speed of the motor.

[0004] In the above-mentioned enhanced ventilation slot sheet, the heat dissipation fins are arranged in one or more layers.

[0005] In the above-mentioned enhanced ventilation slot sheet, the heat dissipation fins are made of copper.

[0006] The present invention increases the heat dissipation area of ​​the iron core in the ventilation groove by adding heat dissipation fins to the ventilation channel steel. In the prior art, the heat flow on the iron core is only exchanged between the surface of the iron core and the air, and there is only one heat path. The present invention adds heat dissipation fins to the ventilation channel steel, and the heat flow on the iron core is conducted to the heat dissipation fins through the ventilation channel steel, and then heat is exchanged with the air through the heat dissipation fins, adding a heat path, achieving the purpose of reducing thermal resistance, and effectively reducing the temperature rise of the motor.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] The present invention adds heat dissipation ribs in the middle of the ventilation slot steel on the basis of the original ventilation slot, so that the heat flow of the stator core adds another parallel heat path, effectively reducing the thermal resistance of the original unit and achieving the purpose of reducing the temperature rise of the stator. It is another technical breakthrough in motor cooling technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The following is a brief introduction to the drawings required for use in the implementation of this application:

[0010] Figure 1 It is the front view of the present invention.

[0011] Figure 2 for Figure 1 Left view of .

[0012] Markings in the figure: 1- fan-shaped piece; 2- ventilation channel steel; 3- lining ring; 4- heat dissipation rib. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and beneficial effects of the present invention clearer, further explanation will be given below in conjunction with the accompanying drawings and specific embodiments, but each embodiment does not constitute a limitation of the present invention. The specific embodiments described in the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0014] like Figure 1-2 As shown, the present invention is composed of a fan-shaped sheet 1, a ventilation channel steel 2, a lining ring 3 and a heat dissipation fin 4. The present invention is based on the original ventilation slot sheet, and adds a heat dissipation fin 4 in the middle position of the ventilation channel steel 2, so that the heat flow of the stator core has another parallel heat path, which effectively reduces the thermal resistance of the original unit. The heat dissipation fin 4 can be arranged in one or more layers according to needs. In addition, in order to improve the heat dissipation efficiency of the heat dissipation fin 4, the ventilation channel steel 2 is compositely manufactured to improve the thermal conductivity coefficient of the ventilation channel steel 2 in the height direction.

[0015] Finally, the protection scope of the present invention is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the scope and spirit of the present invention. If these changes and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these changes and modifications.

Claims

1. An enhanced ventilation slot sheet, characterized by: The invention comprises a fan-shaped sheet (1), a ventilation channel steel (2), a lining ring (3) and a heat dissipation rib (4), wherein the ventilation channel steel (2) and the lining ring (3) are fixed on the fan-shaped sheet (1), and the heat dissipation rib (4) is fixed on the ventilation channel steel (2). The number, size and shape of the ventilation channel steel (2) on a single tooth of the fan-shaped sheet (1) are determined by the designed capacity and rotation speed of the motor.

2. The enhanced ventilation slot sheet according to claim 1 is characterized in that: The heat dissipation fins (4) are arranged in one or more layers.

3. The enhanced ventilation slot sheet according to claim 2 is characterized in that: The heat dissipation fins (4) are made of copper.

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