CN205544756U - Three -phase magnetic efficient energy -saving motor - Google Patents

Abstract

The utility model discloses a three-phase magnetic force high-efficiency energy-saving motor, which mainly relates to a heat dissipation shaft structure of the three-phase magnetic force high-efficiency energy-saving motor. Including permanent magnet squirrel cage rotor, stator, antimagnetic shell, stator composed of magnetic conductive metal fixed iron core, permanent magnet in stator, permanent magnet squirrel cage rotor, three-phase AC winding of stator, and antimagnetic shell installed on motor The wind blades on the body, the wind blade cover and the junction box; it also includes the motor shaft, there is a spline on the motor shaft, and there is a ventilation hole at the center of the motor shaft. There are three cooling holes in the groove of the spline, and the inner ends of the cooling holes are connected with the ventilation holes. The utility model solves the problem that the heat dissipation effect of the existing three-phase magnetic high-efficiency energy-saving motor is not ideal.

Description

Three-phase magnetic high-efficiency energy-saving motor

technical field

The utility model relates to a motor structure, in particular to a heat dissipation shaft structure of a three-phase magnetic high-efficiency energy-saving motor.

Background technique

The three-phase magnetic high-efficiency energy-saving motor has obvious advantages such as simple structure, reliable operation, small size, light weight, low loss, high efficiency, flexible shape and size of the motor, etc., so the application range is extremely wide, almost throughout aerospace, national defense, All fields of industrial and agricultural production and daily life. Chinese patent document CN203014623U discloses a three-phase magnetic high-efficiency energy-saving motor, which uses a permanent magnet squirrel-cage rotor itself to have a complete and constant rotating magnetic field, which reduces the inductive current of the rotating magnetic field of the winding in the stator, thereby achieving the purpose of high efficiency and energy saving. At the same time, the performance of the motor is improved, the power of the motor is improved, the vibration and noise of the motor are reduced, and the internal consumption of the motor is reduced. The heat dissipation of the above-mentioned motor only adopts fan blades to dissipate heat. Since there are dense permanent magnets between the stator and the rotor, the heat dissipation effect is not ideal.

Utility model content

The utility model provides a three-phase magnetic force high-efficiency energy-saving motor, and the utility model solves the problem that the existing three-phase magnetic force high-efficiency energy-saving motor has an unsatisfactory heat dissipation effect.

In order to solve the above problems, the utility model adopts the following technical scheme: a three-phase magnetic high-efficiency energy-saving motor, including a permanent magnet squirrel cage rotor and a stator, and the permanent magnet squirrel cage rotor and stator are multi-pole permanent magnets, and also include an antimagnetic shell, a guide Stator composed of magnetic metal fixed iron core, permanent magnet in the stator, permanent magnet squirrel cage rotor, three-phase AC winding of the stator, fan blade, fan blade cover and junction box installed on the antimagnetic shell of the motor; also includes the motor There is a spline on the rotating shaft of the motor, and the spline is matched with the permanent magnet squirrel cage rotor; there is a ventilation hole at the center of the motor shaft, the ventilation hole is a blind hole, and the end of the ventilation hole is set at the center of one end face of the motor shaft. The port of the rotating shaft is trumpet-shaped; there are 3 heat dissipation holes in the groove of the spline, and the inner ends of the heat dissipation holes are connected to the ventilation holes. The circumferences of the rotating shafts form an angle of 120 degrees with each other.

The utility model has the advantages that the port of the ventilation hole is trumpet-shaped, has a good air suction effect, and improves the heat dissipation effect to the greatest extent. Long life, energy saving and high efficiency.

Description of drawings

Fig. 1 is a sectional view of the utility model;

Fig. 2 is a schematic structural view of the motor shaft;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the B-B sectional view of Fig. 2;

Fig. 5 is a C-C sectional view of Fig. 2 .

Explanation of symbols in the figure: antimagnetic housing 1, stator 2, permanent magnet 3, permanent magnet squirrel cage rotor 4, stator three-phase AC winding 5, permanent magnet 6, motor shaft 7, spline 8, ventilation hole 9, port 10, Cooling holes 11.

detailed description

The utility model is described in detail below with the best embodiment.

As shown in Figure 1-5, the three-phase magnetic high-efficiency energy-saving motor includes a permanent magnet squirrel cage rotor and a stator, both of which are multi-pole permanent magnets, and also includes an antimagnetic shell 1, a magnetic conductive metal body stator A stator 2 composed of an iron core, a permanent magnet 3 in the stator 2, a permanent magnet squirrel cage rotor 4, a stator three-phase AC winding 5, and fan blades, fan blade covers and junction boxes installed on the motor antimagnetic housing 1; the above The structure is the same as that of a three-phase magnetic high-efficiency energy-saving motor disclosed in Chinese patent document CN203014623U. It also includes the motor shaft 7, the motor shaft 7 has a spline 8, the spline 8 cooperates with the permanent magnet squirrel cage rotor 4; there is a ventilation hole 9 at the center of the motor shaft 7, the ventilation hole 9 is a blind hole, and the ventilation hole 9 The end is set at the center of one end face of the motor shaft 7. The port 10 of the motor shaft 7 is trumpet-shaped; there are three cooling holes 11 in the groove of the spline 8, and the inner ends of the cooling holes 11 communicate with the ventilation hole 9 and the cooling hole 11. The axial positions are distributed at equal intervals along the axis of the motor rotating shaft 7 , and the radial positions of the cooling holes 11 are mutually formed at an angle of 120 degrees along the circumference of the motor rotating shaft 7 .

Since opening holes on the motor shaft 7 will reduce the strength of the shaft, the axial and radial positions of the three cooling holes 11 are staggered. Experiments have proved that this structure can minimize the strength of the shaft. The port of the ventilation hole 9 of the utility model is trumpet-shaped and has a good air suction effect. The inhaled wind is scattered to the center of the rotor through the heat dissipation hole 11, and the heat generated by the motor operation is dissipated, thereby improving the heat dissipation effect to the greatest extent.

Finally, it should be noted that obviously, the above-mentioned embodiments are only examples for clearly illustrating the utility model, rather than limiting the implementation manner. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the protection scope of the present utility model.

Claims (1)

1. Three-phase magnetic high-efficiency energy-saving motor, including permanent magnet squirrel cage rotor and stator, both permanent magnet squirrel cage rotor and stator are multi-pole permanent magnets, and also include stator and stator composed of antimagnetic shell and fixed iron core of magnetic conductive metal body The permanent magnet in the permanent magnet, the permanent magnet squirrel cage rotor, the three-phase AC winding of the stator, and the fan blade, the fan blade cover and the junction box installed on the antimagnetic shell of the motor; it is characterized in that it also includes the motor shaft, and there are flowers on the motor shaft The keys and splines are matched with the permanent magnet squirrel cage rotor; there is a ventilation hole at the center of the motor shaft, the ventilation hole is a blind hole, the end of the ventilation hole is set at the center of one end face of the motor shaft, and the port of the motor shaft is trumpet-shaped; There are 3 heat dissipation holes in the groove of the spline, and the inner ends of the heat dissipation holes are connected to the ventilation holes. The axial positions of the heat dissipation holes are distributed at equal intervals along the axial direction of the motor shaft, and the radial positions of the heat dissipation holes are 120 degrees along the circumference of the motor shaft. .