Motor with good heat dissipation performance

Abstract

The utility model discloses a motor with good heat dissipation performance, which comprises a motor shell, a motor shaft rotationally connected with the motor shell, a rotor connected to the motor shaft, a stator connected to the inner side wall of the motor shell, and a first fan blade arranged in the tail end of the motor shell and connected with the motor shaft, a first air outlet hole is formed in the side wall of the front end of the motor shell, a plurality of ventilation grooves are formed in the inner side wall, corresponding to the outer side of the stator, of the motor shell, one end of each ventilation groove is communicated with the first air outlet hole, the other end of each ventilation groove extends to the rear end of the motor shell, and a ventilation channel is formed between the ventilation grooves and the outer side wall of the stator. According to the technical scheme, the ventilating duct is arranged between the stator of the motor and the motor shell, and air generated by rotation of the first fan blades can penetrate through the ventilating duct and is output from the first air outlet to cool the motor, so that the heat dissipation performance of the motor is improved, and the service life of the motor is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field related to motors, and in particular to a motor with good heat dissipation performance. Background Art

[0002] An electric motor, commonly known as a "motor", is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque as a power source for electrical appliances or various machines.

[0003] Existing motor heat dissipation generally involves installing fan blades connected to the motor shaft at the rear end of the motor. The wind generated by the rotation of the fan blades passes through the air gap between the rotor and the stator and the gap between adjacent stators to dissipate heat. The heat dissipation effect is average and the service life is short. Therefore, how to design a motor with good heat dissipation performance has become a technical problem that needs to be solved urgently. Utility Model Content

[0004] In order to overcome the existing technical defects, the purpose of the utility model is to provide a motor with good heat dissipation performance to solve the above technical problems.

[0005] The technical solution adopted by the utility model to solve the technical problem is as follows:

[0006] According to one aspect of the utility model, a motor with good heat dissipation performance is designed, comprising: a motor housing, a motor shaft rotatably connected to the motor housing, a rotor connected to the motor shaft, a stator connected to the inner side wall of the motor housing, and a first fan blade arranged inside the rear end of the motor housing and connected to the motor shaft, the front end side wall of the motor housing is provided with a first air outlet, and the inner side wall of the motor housing corresponding to the outside of the stator is provided with a plurality of ventilation slots, one end of which is connected to the first air outlet and the other end extends to the rear end of the motor housing, and a ventilation duct is formed between the ventilation slot and the outer side wall of the stator.

[0007] By adopting the above technical solution, a ventilation duct is set between the stator and the motor housing of the motor. When the first fan blade rotates, the wind generated can pass through the ventilation duct and be output from the first air outlet to dissipate heat and cool the motor, thereby improving the heat dissipation performance of the motor and further increasing the service life of the motor.

[0008] In order to better solve the above technical defects, the utility model also has a better technical solution:

[0009] In some embodiments, a second fan blade connected to the motor shaft is disposed at the front end of the motor housing, thereby further improving the heat dissipation performance of the motor.

[0010] In some embodiments, the first air outlet is a long strip structure, and an inclined surface is provided at the inner edge thereof.

[0011] In some embodiments, the front and rear side walls of the motor housing are provided with a first air outlet.

[0012] In some embodiments, a plurality of the first air outlet holes are distributed circumferentially on the front and rear side walls of the motor housing.

[0013] In some embodiments, the motor housing includes a casing and an end plate connected to the front end of the casing, a mounting plate integrally formed therewith is disposed inside the rear end of the casing, the front end of the motor shaft is rotatably matched with a bearing mounted on the end plate, and the rear end is rotatably matched with the mounting plate, a plurality of connecting holes are distributed circumferentially on the mounting plate, and the ventilation groove extends to the right side of the mounting plate.

[0014] In some embodiments, a plurality of second air outlet holes are distributed circumferentially on the end plate, and a rear cover plate provided with air inlet holes is connected to the rear end of the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a motor with good heat dissipation performance according to an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0017] Figure 3 Schematic diagram of the state of hiding the end cover and rear cover of the motor with good heat dissipation performance;

[0018] Figure 4 for Figure 3 State diagram from another perspective;

[0019] Reference numerals:

[0020] 1. Motor housing; 11. Casing; 111. Mounting plate; 112. First air outlet; 113. Inclined surface; 114. Ventilation slot; 12. End plate; 121. Second air outlet; 13. Rear cover; 2. Motor shaft; 3. First fan blade; 4. Second fan blade. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0022] In the description of the present utility model, it should be understood that when it comes to orientation descriptions, such as the up, down, front, back, left, right, etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0023] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, fixedly connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0024] Refer to Figures 1 to 4 As shown, a motor with good heat dissipation performance provided by the present utility model includes: a motor housing 1, a motor shaft 2 rotatably connected to the motor housing 1, a rotor (not shown in the figure) connected to the motor shaft 2, a plurality of stators (not shown in the figure) connected to the inner side wall of the motor housing 1, and a first fan blade 3 disposed inside the rear end of the motor housing 1 and connected to the motor shaft 2.

[0025] The motor housing 1 includes a housing 11 and an end plate 12 connected to the front end of the housing 11. An installation plate 111 integrally formed with the housing 11 is provided inside the rear end of the housing 11. The front end of the motor shaft 2 is rotatably engaged with a bearing installed on the end plate 12, and the rear end of the motor shaft 2 is rotatably engaged with the installation plate 111. A plurality of communication holes are circumferentially distributed on the installation plate 111. The communication holes communicate the inside of the housing 11 with the space on the right side of the installation plate 111. The first fan blade 3 is located on the right side of the installation plate 111. A rear cover plate 13 is connected to the rear end of the housing 11, and a plurality of air inlet holes are circumferentially provided on the rear cover plate 13.

[0026] A first air outlet hole 112 is provided on the front side wall of the housing 11 of the motor housing 1. The first air outlet hole 112 is in a strip-shaped structure, and an inclined surface 113 is provided at the inner edge position thereof. One or more first air outlet holes 112 are provided. When there are multiple first air outlet holes 112, they are circumferentially distributed. In this embodiment, it is preferably that three first air outlet holes 112 are provided, which are respectively located on the front and rear side walls and the top of the left end of the housing 11.

[0027] On the inner side wall of the housing 11 corresponding to the outside of the stator, a plurality of ventilation grooves 114 are provided. One end of each ventilation groove 114 communicates with the first air outlet hole 112, and the other end extends to the rear end of the housing 11. The cross section of the ventilation groove 114 is in a U-shaped or U-shaped or semi-circular shape, etc. The right end of the ventilation groove 114 extends to the right side of the installation plate 111. A ventilation duct is formed between the ventilation groove 114 and the outer side wall of the stator.

[0028] A plurality of second air outlet holes 121 are circumferentially distributed on the end plate 12.

[0029] A second fan blade 4 connected to the motor shaft 2 is arranged at the front end of the motor housing 1 .

[0030] When the motor shaft 2 rotates, it can drive the first fan blade 3 and the second fan blade 4 to rotate. The wind generated by the rotation of the first fan blade 3 can pass through the air gap between the rotor and the stator, the gap between adjacent stators and the ventilation duct, and be output from the first air outlet 112 and the second air outlet 121 to dissipate heat and cool the motor.

[0031] The above are only some embodiments of the present invention. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A motor with good heat dissipation performance, characterized in that: include: A motor housing, a motor shaft rotatably connected to the motor housing, a rotor connected to the motor shaft, a stator connected to the inner wall of the motor housing, and a first fan blade arranged inside the rear end of the motor housing and connected to the motor shaft, the front end side wall of the motor housing is provided with a first air outlet, and the inner wall of the motor housing corresponding to the outside of the stator is provided with a plurality of ventilation slots, one end of which is connected to the first air outlet and the other end extends to the rear end of the motor housing, and a ventilation duct is formed between the ventilation slot and the outer wall of the stator.

2. A motor with good heat dissipation performance according to claim 1, characterized in that: A second fan blade connected to the motor shaft is arranged at the front end of the motor housing.

3. A motor with good heat dissipation performance according to claim 1, characterized in that: The first air outlet is a long strip structure, and an inclined surface is arranged at the inner edge thereof.

4. A motor with good heat dissipation performance according to claim 1, 2 or 3, characterized in that: The front and rear side walls of the motor housing are provided with a first air outlet.

5. A motor with good heat dissipation performance according to claim 1, 2 or 3, characterized in that: A plurality of the first air outlet holes are distributed circumferentially on the front and rear side walls of the motor housing.

6. A motor with good heat dissipation performance according to claim 1, 2 or 3, characterized in that: The motor housing includes a casing and an end plate connected to the front end of the casing. A mounting plate integrally formed with the casing is arranged inside the rear end of the casing. The front end of the motor shaft is rotatably matched with a bearing installed on the end plate, and the rear end is rotatably matched with the mounting plate. A plurality of connecting holes are distributed circumferentially on the mounting plate, and the ventilation groove extends to the right side of the mounting plate.

7. A motor with good heat dissipation performance according to claim 6, characterized in that: The end plate has a plurality of second air outlet holes distributed circumferentially thereon, and the rear end of the housing is connected to a rear cover plate provided with air inlet holes.

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