阅读说明：本技术 应用于电机的高效风冷结构 (Efficient air cooling structure applied to motor ) 是由 李晓雨 梁太海 牟廷超 朱颂恩 陶思钧 赵健 于 2021-08-27 设计创作，主要内容包括：本发明涉及到一种应用于电机的高效风冷结构,包括壳体、固定设置在壳体内的定子、连接在壳体两端的前端板和后端板、同轴设置于定子内的转子,转子的转轴前端穿过前端板伸出壳体外,转轴后端穿过后端板伸出壳体外,壳体外壁上周向均布有多个截面成“n”形或倒“V”形的散热片,散热片的两边分别与壳体外壁密封焊接,任一散热片与壳体构成一个风道,转轴的后端固定连接有风扇,风扇位于壳体外部,壳体后端外缘连接有罩住风扇的保护罩,保护罩后端开设有大量风孔,保护罩通过一环形连接板与壳体后端连接,连接板的前端与壳体后端面以及各散热片的后端面焊接,保护罩前端焊接在连接板的后端外缘,连接板上开设有与风道一一对应的过孔。(The invention relates to a high-efficiency air cooling structure applied to a motor, which comprises a shell, a stator fixedly arranged in the shell, a front end plate and a rear end plate connected with two ends of the shell, and a rotor coaxially arranged in the stator, wherein the front end of a rotating shaft of the rotor passes through the front end plate and extends out of the shell, the rear end of the rotating shaft passes through the rear end plate and extends out of the shell, a plurality of radiating fins with n-shaped or inverted V-shaped cross sections are uniformly distributed on the outer wall of the shell in the circumferential direction, two sides of each radiating fin are respectively welded with the outer wall of the shell in a sealing way, any radiating fin and the shell form an air duct, the rear end of the rotating shaft is fixedly connected with a fan, the fan is positioned outside the shell, the outer edge of the rear end of the shell is connected with a protective cover for covering the fan, the rear end of the protective cover is provided with a large number of air holes, the protective cover is connected with the rear end of the shell through an annular connecting plate, and the front end of the connecting plate is welded with the rear end surface of the shell and the rear end surface of each radiating fin, the front end of the protective cover is welded at the outer edge of the rear end of the connecting plate, and the connecting plate is provided with through holes which are in one-to-one correspondence with the air ducts.)

1. A high-efficiency air cooling structure applied to a motor comprises a cylindrical shell (1), a stator (2) fixedly arranged on the inner wall of the shell (1), a front end plate (3) connected to the front end of the shell (1), a rear end plate (4) connected to the rear end of the shell (1), and a rotor (5) coaxially arranged in the stator (2), wherein the front end of a rotating shaft (6) of the rotor (5) penetrates through the front end plate (3) and extends out of the shell (1), the rear end of the rotating shaft (6) penetrates through the rear end plate (4) and extends out of the shell (1), the rotating shaft (6) is rotatably connected with the front end plate (3) and the rear end plate (4), the novel heat dissipation device is characterized in that a plurality of radiating fins (7) with n-shaped or inverted V-shaped cross sections are evenly distributed on the outer wall of the shell (1) in the circumferential direction, the axial direction of each radiating fin (7) is parallel to the axial direction of the shell (1) and extends to the two ends of the shell (1), and the two sides of each radiating fin (7) are respectively welded with the outer wall of the shell (1) in a sealing mode.

2. The efficient air cooling structure applied to the motor according to claim 1, wherein any one of the heat dissipating fins (7) and the casing (1) form an air duct (8), the rear end of the rotating shaft (6) is fixedly connected with a fan (9), the fan (9) is located outside the casing (1), the outer edge of the rear end of the casing (1) is connected with a protective cover (10) covering the fan (9), the rear end of the protective cover (10) is provided with a plurality of air holes (11), the protective cover (10) is connected with the rear end of the casing (1) through an annular connecting plate (12), the front end of the connecting plate (12) is welded with the rear end face of the casing (1) and the rear end faces of the heat dissipating fins (7), the front end of the protective cover (10) is welded at the outer edge of the rear end of the connecting plate (12), and the connecting plate (12) is provided with through holes (13) corresponding to the air duct one to one.

3. A highly efficient air cooling structure applied to an electric motor according to claim 2, wherein the front end opening of said heat radiating fin (7) is formed as an inclined notch inclined outward.

4. The efficient air cooling structure applied to the motor according to claim 3, wherein grooves (14) corresponding to the heat radiating fins (7) one by one are formed in the outer wall of the casing (1), and the grooves (14) are located in the air duct (8) and extend from the front end of the casing (1) to the rear end of the casing (1).

5. A highly efficient air cooling structure for electric motor according to claim 1 wherein the interval angle between two adjacent fins (7) is not more than 3 °.

6. The high-efficiency air cooling structure applied to the motor as claimed in claim 2, wherein the fan (901) of the fan (9) has an outer edge opposite to the air duct (8).

Technical Field

The invention relates to a high-efficiency air cooling structure applied to a motor.

Background

The motor and the servo system thereof are widely applied to the fields of industrial driving, servo control and the like due to the advantages of small volume, high efficiency, good dynamic response characteristic and the like. When the frequency converter controls the motor to operate in a frequency conversion mode, the operating frequency of the motor changes at a frequency of 50 Hz or below, and the rotating speed of the motor corresponds to the frequency of the motor.

However, the heat dissipation fan built in the motor also changes with the change of the rotating speed of the motor, and the exhaust air volume of the motor also changes with the change of the rotating speed of the motor, and under the state of low-frequency operation of the motor, the rotating speed of the motor is low, and the rotating speed of the fan is also low, so that the flow speed of cooling air flow for cooling the motor is reduced, and further the cooling air flow is diffused outwards in the radial direction of the motor in advance, so that the front end of the motor cannot be effectively cooled, the heat dissipation volume of the motor is reduced, the temperature of the motor is increased, the service life of the motor is influenced, the motor is easy to damage, the production is influenced, and certain maintenance cost is generated. In order to solve the heat dissipation problem, the existing motor adopts a mode of directly arranging fins on a motor shell to increase the heat conduction area for heat dissipation. However, this structure can only radiate heat by means of heat radiation, and the increase of the heat radiation effect is limited.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the utility model provides a be applied to high-efficient forced air cooling structure of motor, this structure can effectively restrain the quick diffusion of the cooling air that the fan provided, ensures that the cooling air axial runs through motor casing, takes away the heat on the casing fast, realizes high-efficient forced air cooling's technical goal.

In order to solve the technical problems, the invention adopts the technical scheme that: be applied to high-efficient air-cooled structure of motor, including cylinder casing, the fixed stator that sets up on shells inner wall, connect the front end plate at the casing front end, connect rear end plate, the coaxial rotor that sets up in the stator at the casing rear end, the pivot front end of rotor passes outside the front end plate stretches out the casing, and the pivot rear end passes outside the rear end plate stretches out the casing, and the pivot is connected with front end plate, rear end plate rotation, the circumference equipartition has the fin that a plurality of cross-sections become "n" shape or fall "V" shape on the casing outer wall, and the axial direction of fin is on a parallel with the casing axial and sets up and extends to the casing both ends, the both sides of fin respectively with casing outer wall seal weld.

As an optimal scheme, any radiating fin and a shell form an air channel, the rear end of the rotating shaft is fixedly connected with a fan, the fan is located outside the shell, the outer edge of the rear end of the shell is connected with a protective cover for covering the fan, a large number of air holes are formed in the rear end of the protective cover, the protective cover is connected with the rear end of the shell through an annular connecting plate, the front end of the connecting plate is welded with the rear end face of the shell and the rear end faces of the radiating fins, the front end of the protective cover is welded on the outer edge of the rear end of the connecting plate, and through holes corresponding to the air channels one to one are formed in the connecting plate.

Preferably, the front end of the heat sink is opened with a chamfered cut inclined outward.

As a preferred scheme, grooves corresponding to the radiating fins one by one are formed in the outer wall of the shell, and the grooves are located in the air duct and extend from the front end of the shell to the rear end of the shell.

Preferably, the interval angle between two adjacent radiating fins does not exceed 3 degrees.

Preferably, the outer edge of the fan blade of the fan is opposite to the air duct.

The invention has the beneficial effects that: according to the invention, a large number of n-shaped or inverted V-shaped radiating fins are welded on the outer wall of the shell, so that the radiating area of the shell is greatly increased, and the radiating effect of the shell is improved.

According to the invention, the cooling fins are utilized to construct a large number of air channels on the outer wall of the shell, then the fan is used for providing cooling air flow, and the cooling air flow flows to the front end of the shell along the air channels and is discharged, so that the problem that the cooling air flow provided by the fan is diffused to the outside rapidly at the rear end of the shell and cannot be cooled to the front end of the shell is solved, the cooling air flow is ensured to penetrate through the shell of the motor axially, the heat on the shell is taken away rapidly, and the technical aim of efficiently cooling the shell by the fan at low rotating speed is fulfilled.

Drawings

The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings, in which:

FIG. 1 is a schematic view of a half-section of the present invention;

FIG. 2 is a schematic view of the connection structure of the housing and the heat sink;

FIG. 3 is a schematic structural view of a connection plate;

in FIGS. 1 to 3: 1. the fan comprises a shell, 2, a stator, 3, a front end plate, 4, a rear end plate, 5, a rotor, 6, a rotating shaft, 7, radiating fins, 8, an air duct, 9, a fan, 901, fan blades, 10, a protective cover, 11, an air hole, 12, a connecting plate, 13, a through hole, 14, a groove, 15 and an oblique notch.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to fig. 3, the high-efficiency air cooling structure applied to a motor includes a cylindrical housing 1, a stator 2 fixedly disposed on an inner wall of the housing 1, a front end plate 3 connected to a front end of the housing 1, a rear end plate 4 connected to a rear end of the housing 1, and a rotor 5 coaxially disposed in the stator 2, wherein a front end of a rotating shaft 6 of the rotor 5 penetrates through the front end plate 3 and extends out of the housing 1, a rear end of the rotating shaft 6 penetrates through the rear end plate 4 and extends out of the housing 1, the rotating shaft 6 is rotatably connected to the front end plate 3 and the rear end plate 4, a plurality of radiating fins 7 having an "n" or an inverted "V" shape in cross section are circumferentially and uniformly distributed on an outer wall of the housing 1, an axial direction of the radiating fins 7 is parallel to an axial direction of the housing 1 and extends to two ends of the housing 1, two sides of the radiating fins 7 are respectively welded to an outer wall of the housing 1 in a sealing manner, an air duct 8 is formed by any radiating fin 7 and the housing 1, a rear end of the rotating shaft 6 is fixedly connected to a fan 9, the fan 9 is located the casing 1 outside, casing 1 rear end outer fringe is connected with a safety cover 10 that covers fan 9, a large amount of wind holes 11 have been seted up to safety cover 10 rear end, safety cover 10 is connected with casing 1 rear end through an annular connecting plate 12, the front end of this connecting plate 12 and the rear end face welding of 1 rear end face of casing and each fin 7, the welding of safety cover 10 front end is in the rear end outer fringe of connecting plate 12, set up the via hole 13 with the wind channel one-to-one on the connecting plate 12.

According to the invention, the cooling fins 7 are utilized to construct the air channels 8 on the outer wall of the shell 1, then the fan 9 is used for providing cooling air flow, and the cooling air flow flows to the front end of the shell 1 from the rear end along the air channels 8 and is discharged, so that the problem that the cooling air flow provided by the fan 9 is diffused to the outside rapidly at the rear end of the shell 1 and cannot be cooled to the front end of the shell 1 is solved, the cooling air flow penetrates through the motor shell 1 axially, the heat on the shell 1 is taken away rapidly, and the technical aim of efficiently cooling the shell 1 by the fan at low rotating speed is achieved.

As shown in fig. 1, the front end opening of the heat sink 7 is an oblique cut 15 which is inclined outward, so as to ensure the smooth circulation of the cooling airflow in the air duct 8, and avoid the problem that the air cooling effect is reduced due to the fact that the front end of the air duct 8 is blocked when the motor is installed and the air cannot be exhausted normally.

As shown in fig. 1 and 2, grooves 14 corresponding to the heat dissipation fins 7 one by one are formed in the outer wall of the housing 1, and the grooves 14 are located in the air duct 8 and extend from the front end of the housing 1 to the rear end of the housing 1. The groove 14 enlarges the heat dissipation area of the outer wall of the shell 1, enlarges the sectional area of the air duct 8, improves the ventilation quantity of the air duct 8 and further improves the cooling effect.

The interval angle between two adjacent radiating fins 7 is not more than 3 degrees. The cooling effect of the air cooling structure on the shell 1 and the whole motor is ensured, when the interval angle between the two radiating fins 7 exceeds 3 degrees, the heat diffusion speed on the shell 1 between the two radiating fins 7 is greatly reduced, and the heat dissipation effect of the whole motor is seriously influenced.

As shown in fig. 1, the outer edge of the fan blade 901 of the fan 9 is opposite to the air duct 8, so as to improve the driving effect of the fan on the cooling air flow and improve the flow speed of the air flow in the air duct 8.

The working principle of the invention is as follows: as shown in fig. 1-3, when the motor operates, the rotor 5 drives the rotating shaft 6 to rotate in the casing 1, the rear end of the rotating shaft 6 drives the fan 9 to rotate, the fan 9 drives the cooling air flow to enter the protective cover 10 from the air hole 11 at the rear end of the protective cover 10 and further flow to the front end of the casing 1 through each air channel 8, the cooling air flow exchanges heat with the casing 1 and the radiating fins 7 in the process of flowing into the air channels 8, absorbs heat on the casing 1 and the radiating fins 7 and flows out from the front end of the air channels 8, so that the casing 1 is cooled integrally from the rear end to the front end, and the air cooling effect is greatly improved.

The radiating fins 7 are arranged on the outer wall of the shell 1, so that the contact area of the shell 1 and air is enlarged, and the radiating effect of the motor can be improved.

Set up the recess on 1 outer wall of casing to enlarge the area of contact of 1 outer wall of casing and air, also can improve the radiating effect of motor, and when the recess setting was in wind channel 8, still further improved the flow area in wind channel, improved the air volume, further improved the forced air cooling effect.

The above embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments in use, and are not intended to limit the invention; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.