CN218829485U

CN218829485U - Motor heat radiation structure and motor

Info

Publication number: CN218829485U
Application number: CN202223277397.8U
Authority: CN
Inventors: 钟成堡; 陈应翔; 刘娜
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Kaibang Motor Manufacture Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Kaibang Motor Manufacture Co Ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-04-07
Anticipated expiration: 2032-12-07

Abstract

The utility model provides a motor heat radiation structure, motor heat radiation structure includes: the fan comprises a main shaft, a worm and a shell, wherein at least two fans are arranged on the shell, the worm is located in the shell, the worm is connected with the main shaft, a worm wheel is arranged on the worm, the worm wheel is connected with a driving shaft of the fans, and the main shaft can drive the worm wheel to rotate so as to drive the fans to rotate. According to the utility model discloses, it is lower to have inside radiating efficiency in the motor that can overcome among the prior art, leads to the easy defect of damaging of motor, improves the heat dispersion of motor.

Description

Motor heat radiation structure and motor

Technical Field

The utility model relates to the technical field of motors, concretely relates to motor heat radiation structure, motor.

Background

With the rapid development of industrial automation and intellectualization, the servo motor is widely used in industrial production equipment due to the advantages of high control precision, high response speed and the like. When the servo motor works for a long time, parts such as an internal winding and the like can generate a large amount of heat, if the heat is not discharged in time, the operation of precision electronic devices such as an encoder and the like can be seriously influenced, and if the temperature rise of a stator winding exceeds the temperature rise specified by the insulation grade of the motor, the servo motor has the risk of fusing, and the service life of the servo motor is influenced.

At present, most of common heat dissipation modes in servo motors comprise heat dissipation structures such as externally added heat dissipation ribs and the like, and water cooling, air cooling and other methods. The methods can increase the heat dissipation speed of the motor to a certain extent, but the heat dissipation efficiency is low, and some auxiliary devices are required to be matched, such as a condensing device and the like which are generally required by water cooling, so that the complexity of the use of the motor is increased.

Because there is inside radiating efficiency lower in the motor among the prior art, cause the motor to damage easily, technical problem such as complexity height that the motor used, consequently the utility model discloses a motor heat radiation structure, motor are designed to the research.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the motor among the prior art and having inside radiating efficiency lower, leads to the easy defect of damaging of motor to a motor heat radiation structure, motor are provided.

In order to solve the above problem, the utility model provides a motor heat radiation structure, it includes:

the fan comprises a main shaft, a worm and a shell, wherein at least two fans are arranged on the shell, the worm is located in the shell, the worm is connected with the main shaft, a worm wheel is arranged on the worm, the worm wheel is connected with a driving shaft of the fans, and the main shaft can drive the worm wheel to rotate so as to drive the fans to rotate.

In some embodiments, first fixing shafts are disposed on two sides of the worm wheel, the first fixing shafts are connected with driving shafts of the fans, when the main shaft drives the worm wheel to rotate through the worm, the worm wheel drives at least two fans to synchronously rotate through the first fixing shafts, and the central axis of the first fixing shafts coincides with the central axis of the worm wheel.

In some embodiments, the first fixing shaft is connected to a second fixing shaft, the second fixing shaft is connected to a driving shaft of the fan, the central axis of the second fixing shaft coincides with the central axis of the first fixing shaft, the worm wheel drives the second fixing shaft to rotate synchronously through the first fixing shaft, and the central axis of the second fixing shaft is perpendicular to the central axis of the main shaft.

In some embodiments, a stator is disposed on the main shaft, the stator is located in the housing, the stator is extended from both ends of the main shaft, one end of the main shaft is extended from the housing, the other end of the main shaft is located in the housing, a cavity is formed between the stator and the housing, a worm is connected with the other end of the main shaft, the worm is located in the cavity, at least two fans are symmetrically arranged about the central axis of the main shaft, at least one of the fans is an air inlet fan, and at least one of the fans is an air outlet fan.

In some embodiments, the air inlet fan and the air outlet fan are symmetrically arranged about a central axis of the main shaft, and air outside the motor can be conveyed into the cavity through the air inlet fan, and the air is discharged outside the motor through the air outlet fan after heat exchange in the cavity.

In some embodiments, the housing includes two first cover bodies, the two first cover bodies form a cavity structure, a second cover body is disposed on the first cover body, a connection hole is disposed on one of the second cover bodies, a groove is disposed on the other of the second cover bodies, a fixing member is disposed in the connection hole, and the fixing member penetrates through the connection hole and then is connected to the groove, so that the two first cover bodies are connected to each other.

In some embodiments, the housing is provided with a plurality of dustproof units, the dustproof units are opposite to the fan, each dustproof unit comprises a fixing piece, a filter screen is arranged on each fixing piece, and the filter screens and the fan are symmetrically arranged, so that air outside the motor can enter the housing through the filter screens.

In some embodiments, the housing is provided with a plurality of through holes, the center of each through hole is located on the central line of the worm wheel, the fan is located in each through hole, and the through holes are opposite to the dustproof units.

In some embodiments, a bearing is disposed in the fixing member, an outer wall of the bearing is connected to the fixing member, an inner wall of the bearing is connected to a driving shaft of the fan, and the driving shaft of the fan penetrates through fan blades of the fan and then is connected to the bearing, so that the fan blades of the fan are located in the through holes.

The utility model also provides a motor, it includes preceding arbitrary motor heat radiation structure.

The utility model provides a pair of motor heat radiation structure, motor have following beneficial effect: through be provided with two at least fans on the casing, be provided with the worm wheel on the worm, the worm wheel with the drive shaft of fan is connected, adopts the worm gear transmission, turns into the rotation of the axle of motor spindle with it quadrature to make the fan exhaust, the air inlet direction becomes both sides from the past back, two fans of both sides play respectively breathe in, carminative effect, form the convection current, inside and outside gas mobility is stronger, change the exhaust of fan, the direction of admitting air, two fans form the convection current about, has strengthened inside and outside gas mobility, has improved the radiating efficiency. The main shaft and the worm can be integrated, so that the strength of the main shaft and the worm is improved, and the power of the main shaft of the motor is converted into the power of the fan.

Drawings

Fig. 1 is a sectional view of a heat dissipation structure of a motor according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a motor heat dissipation structure according to an embodiment of the present invention;

fig. 3 is a perspective view of a heat dissipation structure of a motor according to an embodiment of the present invention.

The reference numbers are given as:

1. a main shaft; 2. a worm; 3. a second cover body; 4. a worm gear; 5. a first fixed shaft; 6. a first cover body; 7. a control unit; 8. a second fixed shaft; 9. a fan; 10. a bearing; 11. a fixing member; 12. filtering with a screen; 13. and a stator.

Detailed Description

Referring to fig. 1 to 3 in combination, according to an embodiment of the present invention, there is provided a heat dissipation structure for a motor, including: the fan comprises a main shaft 1, a worm 2 and a shell, wherein the shell is provided with at least two fans 9, the worm 2 is positioned in the shell, the worm 2 is connected with the main shaft 1, the worm 2 is provided with a worm wheel 4, the worm wheel 4 is connected with a driving shaft of the fan 9, and the main shaft 1 can drive the worm wheel 4 to rotate through the worm 2 so as to drive the fans 9 to rotate. Among this technical scheme, through be provided with two at least fans 9 on the casing, at least two fan 9 about the central axis symmetrical arrangement of main shaft 1 makes a fan 9 for the casing internal air intake, and another fan is the casing external exhaust, forms the convection current of motor both sides, be provided with worm wheel 4 on the worm 2, worm wheel 4 with the drive shaft of fan 9 is connected, adopts worm wheel 4 worm 2 transmission, turns into the rotation of motor main shaft 1 with the rotation of its orthogonal axle to make two fans 9 of airing exhaust, the air inlet direction change both sides from the past after, and two fans 9 in both sides play respectively and inhale, exhaust effect, form the convection current, and inside and outside gas mobility is stronger, changes the exhaust of fan 9, and the direction of admitting air, and two fans on the left and right sides form the convection current, has strengthened inside and outside gas mobility, has improved the radiating efficiency. Of course, the main shaft 1 and the worm 2 can be integrated, so that the strength of the main shaft 1 and the worm 2 is improved, and the power of the main shaft of the motor is converted into the power of the fan 9.

In some embodiments, the two sides of the worm wheel 4 are provided with first fixing shafts 5, the first fixing shafts 5 are connected with the driving shafts of the fans 9, when the main shaft 1 drives the worm wheel 4 to rotate through the worm 2, the worm wheel 4 drives at least two fans 9 to rotate synchronously through the first fixing shafts 5, and the central axis of the first fixing shafts 5 coincides with the central axis of the worm wheel 4. In the technical scheme, the two sides of the worm wheel 4 are provided with the first fixing shafts 5, the worm wheel 4 provides power for the fan 9 through the first fixing shafts 5, so that the fan 9 is driven to rotate, the central axis of the first fixing shaft 5 coincides with the central axis of the worm wheel 4, the fan 9 is guaranteed to operate stably, the noise of the fan 9 is reduced, and the abrasion between the worm wheel 4 and the worm 2 is reduced.

In some embodiments, the first fixing shaft 5 is connected with a second fixing shaft 8 in a clamping manner, the second fixing shaft 8 is connected with a driving shaft of the fan 9, a central axis of the second fixing shaft 8 coincides with a central axis of the first fixing shaft 5, the worm wheel 4 drives the second fixing shaft 8 to rotate synchronously through the first fixing shaft 5, and the central axis of the second fixing shaft 8 is perpendicular to the central axis of the main shaft 1. In the technical scheme, the first fixing shaft 5 is connected with the second fixing shaft 8 in a clamping mode, the second fixing shaft 8 is connected with the driving shaft of the fan 9, the worm wheel 4 is convenient to disassemble, the second fixing shaft 8 can be disassembled to replace the worm wheel 4 to prevent abrasion, the fan 9 and the fixing part 11 can also be cleaned, the service life of the heat dissipation mechanism is ensured, the central axis of the second fixing shaft 8 is perpendicular to the central axis of the main shaft 1, so that the rotation of the main shaft 1 is changed into the rotation of the worm wheel 4 in the plane orthogonal to the main shaft through worm and gear transmission, the transmission efficiency is improved, and the transmission stability is ensured.

In some embodiments, a stator 13 is disposed on the main shaft 1, the stator 13 is located in the housing, two ends of the main shaft 1 extend out of the stator 13, one end of the main shaft 1 extends out of the housing, the other end of the main shaft is located in the housing, a cavity is formed between the stator and the housing, the worm 2 is connected with the other end of the main shaft 1, the worm 2 is located in the cavity, at least two fans 9 are symmetrically arranged about the central axis of the main shaft 1, at least one of the fans 9 is an air inlet fan, and at least one of the fans 9 is an air outlet fan. In this technical scheme, at least two fan 9 about the central axis symmetrical arrangement of main shaft 1, at least two fan 9 wherein at least one fan 9 is air inlet fan, and at least one is exhaust fan, and two fan 9 play respectively and breathe in, carminative effect, form the convection current, and inside and outside gas mobility is stronger, compares traditional air-cooled radiating efficiency higher, realizes more easily that exhaust and the function of admitting air, and at least two fan 9 are the same in the direction of rotation, and inside and outside air convection current makes radiating efficiency increase by a wide margin.

In some embodiments, the air inlet fan and the air outlet fan are symmetrically arranged about a central axis of the main shaft 1, and air outside the motor can be conveyed into the cavity through the air inlet fan, and after heat exchange in the cavity, the air is discharged outside the motor through the air outlet fan. In the technical scheme, the air inlet fan and the air exhaust fan are symmetrically arranged about the central axis of the main shaft 1, so that air outside the motor flows through air in the motor, the air circulation efficiency inside and outside the motor is improved, convection is formed between the air inlet fan and the air exhaust fan, the flowability of air inside and outside is enhanced, and the heat dissipation efficiency is improved.

In some embodiments, the housing includes two first covers 6, the two first covers 6 form a cavity structure, the second cover 3 is disposed on the first cover 6, a connection hole is disposed on one of the second covers 3, and a groove is disposed on the other second cover 3, a fixing member is disposed in the connection hole, and the fixing member penetrates through the connection hole and then is connected to the groove, so that the two first covers 6 are connected to each other. Among this technical scheme, motor casing adopts split type structure, and easy dismounting pulls down second fixed axle 8, can change worm wheel 4 in order to prevent wearing and tearing, also can clean fan 9 and dustproof unit, guarantees heat dissipation mechanism's life, and the running accuracy is high, is convenient for adjust worm gear mechanism's drive ratio.

In some embodiments, the housing is provided with a plurality of dustproof units, the dustproof units are opposite to the fan 9, each dustproof unit comprises a fixing part 11, a filter screen 12 is arranged on each fixing part 11, and the filter screens 12 and the fan 9 are symmetrically arranged, so that air outside the motor can enter the housing through the filter screens 12. In this technical scheme, dustproof unit includes mounting 11, be provided with filter screen 12 on mounting 11, avoid the outer ant of motor, dust to enter into the motor, cause the damage to the motor, pull down second fixed axle 8, can change worm wheel 4 in order to prevent wearing and tearing, also can clean fan 9 and mounting 11, guarantee heat dissipation mechanism's life.

In some embodiments, the housing is provided with a plurality of through holes, the center of the through hole is located on the central line of the worm wheel 4, and the fan 9 is located in the through hole, and the through hole is opposite to the dustproof unit. In the technical scheme, be provided with a plurality of through-holes on the casing, fan 9 is located in the through-hole, improves fan 9's air supply efficiency, when avoiding fan 9 to rotate, the flabellum of fan causes the damage to the outer personnel of motor.

In some embodiments, a bearing 10 is disposed in the fixing member 11, an outer wall of the bearing 10 is connected to the fixing member 11, an inner wall of the bearing 10 is connected to the driving shaft of the fan 9, and the driving shaft of the fan 9 penetrates through the fan blades of the fan 9 and then is connected to the bearing 10, so that the fan blades of the fan 9 are located in the through holes. Among this technical scheme, fan 9's drive shaft is connected with bearing 10, guarantees fan 9's normal operating, is provided with bearing 10 in the mounting 11 for more steady when the drive shaft rotates, small in noise, wearing and tearing are low, and when avoiding fan 9 to rotate, the drive shaft causes the damage to filter screen 12, convenient to detach, maintenance fan 9.

Referring to fig. 1, the motor of the present invention is composed of a main shaft 1, a control unit 7, and a stator 13, and the structure of the motor is the same as that of the motor in the prior art.

The utility model relates to a motor heat radiation structure's installation step as follows:

firstly, the half assembly of the servo motor is completely assembled, namely the first cover body 6 and the stator 13 are completely assembled, and then the worm wheel 4 and the first fixed shaft 5 are assembled to ensure the circumferential positioning of the worm wheel 4; then the second cover body 3 is opened, the worm wheel 4 is clamped by using a workpiece and is conveyed into the first cover body 6 together with the first fixed shaft 5, and the worm wheel and the worm are correctly meshed according to the selected center distance a and can normally rotate;

next, the fan 9 and the bearing 10 are assembled on the second fixed shaft 8, and then the bearing 10 is pressed into the bearing chamber of the fixing member 11, so that the fixing member 11 is assembled on the second fixed shaft 8;

finally, the assembled 2 second fixing shafts 8 and the first fixing shaft 5 are respectively assembled left and right to ensure the axial positioning of the worm wheel 4, and the dustproof cover unit is fixed on the outer wall of the first cover body 6 through screws after the assembly is finished;

the utility model relates to a motor heat radiation structure's theory of operation as follows:

when the main shaft 1 of the motor rotates, the fan 9 on the second fixed shaft 8 is driven to rotate through the transmission of the worm gear and the worm, and redundant heat in the cavity of the motor is discharged, so that the purpose of heat dissipation is achieved; the dustproof unit is provided with a dustproof net structure, so that the dustproof requirement of the motor can be met.

When the main shaft 1 rotates, the worm wheel 4 can be automatically driven, and then the fan 9 is driven to rotate, and other mechanisms are not needed to be added to supply power to the fan, so that the whole structure is simple;

the worm gear mechanism can change the plane of the rotary motion, for example, in the utility model, the rotation of the main shaft 1 is changed into the rotation of the worm wheel 4 in the plane orthogonal to the main shaft through the worm gear transmission; the fan 9 of the utility model is arranged at the left and right side walls, is driven by the worm wheel 4, and can intake air and exhaust air at the same time, thereby forming left and right convection, accelerating the circulation speed of the air inside and outside the motor and having higher heat dissipation efficiency;

the transmission ratio i = z2/z1 of the worm gear mechanism, wherein z1 and z2 are the number of heads of the worm 2 and the number of teeth of the worm wheel 4, respectively, as shown in fig. 2, it can be known from the national standard that, under the condition that the center distance a is not changed, different values of z1 and z2 are selected within a certain range, and worm gear mechanisms with different transmission ratios can be obtained, for the utility model, different worm wheels 4 and different worms 2 are replaced, so that the fan 9 can obtain different rotating speeds under the condition that the rotating speeds of the worms 2 are the same, and can be adapted to different heat dissipation requirements;

when the worm wheel 4 is fixed, a split structure is adopted, the second fixing shaft 8 is detached, the worm wheel 4 can be replaced to prevent abrasion, the fan machine 9 and the dustproof unit can be cleaned, and the service life of the heat dissipation mechanism is ensured;

in the embodiment, the number of the worm wheels 4 is 1, in other embodiments, if the space is enough, the length of the worm tooth structure on the worm 2 can be increased, the worm wheels are matched with the worm wheels 4, the worm wheels are linearly and equidistantly arranged on the worm 2, and each 1 worm wheel drives 2 fans on the side wall, so that the heat dissipation speed is higher;

the utility model adopts the worm gear transmission to convert the rotation of the main shaft 1 into the rotation of the shaft orthogonal to the main shaft, thereby the air exhaust and air inlet directions of the fan 9 are changed from front to back to left and right, the left and right fans respectively play the functions of air suction and air exhaust to form convection, the inner and outer gas mobility is stronger, and the heat dissipation efficiency is higher compared with the traditional air cooling; the transmission ratio can be adjusted by changing the number of the heads of the worm 2 part on the main shaft 1 and the number of teeth of the worm wheel 4, so that the fan 9 can obtain different rotating speeds under the condition that the rotating speeds of the motors are the same, and the fan is suitable for occasions with different heat dissipation requirements; the second fixing shaft 8 of the worm wheel 4 and the first fixing shaft 5 adopt a split structure, so that the worm wheel 4 is convenient to replace and the fan is convenient to clean.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a motor heat radiation structure which characterized in that: the method comprises the following steps: main shaft (1), worm (2) and casing, be provided with two at least fans (9) on the casing, worm (2) are located in the casing, worm (2) with main shaft (1) is connected, be provided with worm wheel (4) on worm (2), worm wheel (4) with the drive shaft of fan (9) is connected, main shaft (1) passes through worm (2) can drive worm wheel (4) rotate, with the drive fan (9) rotate.

2. The motor heat dissipation structure of claim 1, wherein: the two sides of the worm wheel (4) are provided with first fixing shafts (5), the first fixing shafts (5) are connected with a driving shaft of the fan (9), when the main shaft (1) drives the worm wheel (4) to rotate, the worm wheel (4) drives at least two fans (9) to synchronously rotate through the first fixing shafts (5), and the central axis of the first fixing shafts (5) coincides with the central axis of the worm wheel (4).

3. The motor heat dissipation structure of claim 2, wherein: the joint has second fixed axle (8) on first fixed axle (5), second fixed axle (8) are connected the drive shaft of fan (9), just, second fixed axle (8) the central axis with the central axis of first fixed axle (5) coincides mutually, worm wheel (4) pass through first fixed axle (5) drive second fixed axle (8) synchronous rotation, just, the central axis of second fixed axle (8) with the central axial of main shaft (1) is mutually perpendicular.

4. The motor heat dissipation structure of claim 1, wherein: be provided with stator (13) on main shaft (1), stator (13) are located in the casing, the both ends of main shaft (1) all stretch out stator (13), just, the one end of main shaft (1) stretches out the casing, and the other end is located in the casing, the stator with the cavity has between the casing, worm (2) with the other end of main shaft (1) is connected, worm (2) are located in the cavity, at least two fan (9) about the central axis symmetrical arrangement of main shaft (1), at least two fan (9) wherein at least one fan (9) are air intake fan, and at least one is exhaust fan.

5. The heat dissipation structure for a motor of claim 4, wherein: the air inlet fan and the air outlet fan are symmetrically arranged about the central axis of the main shaft (1), air outside the motor can be conveyed into the cavity through the air inlet fan, and the air is discharged out of the motor through the air outlet fan after heat exchange in the cavity.

6. The motor heat dissipation structure of claim 1, wherein: the shell comprises two first cover bodies (6), the two first cover bodies (6) form a cavity structure, a second cover body (3) is arranged on the first cover body (6), a connecting hole is formed in one second cover body (3), a groove is formed in the other second cover body (3), a fixing piece is arranged in the connecting hole, penetrates through the connecting hole and then is connected with the groove, and therefore the two first cover bodies (6) are connected with each other.

7. The motor heat dissipation structure of claim 1, wherein: be provided with a plurality of dustproof units on the casing, dustproof unit with fan (9) are relative, dustproof unit includes mounting (11), be provided with filter screen (12) on mounting (11), filter screen (12) with fan (9) symmetry is laid to make the air outside the motor can pass through filter screen (12) get into in the casing.

8. The motor heat dissipation structure of claim 7, wherein: the dustproof fan is characterized in that a plurality of through holes are formed in the shell, the centers of the through holes are located on the central line of the worm wheel (4), the fan (9) is located in the through holes, and the through holes are opposite to the dustproof unit.

9. The motor heat dissipation structure of claim 8, wherein: the fan is characterized in that a bearing (10) is arranged in the fixing piece (11), the outer wall of the bearing (10) is connected with the fixing piece (11), the inner wall of the bearing (10) is connected with the driving shaft of the fan (9), and the driving shaft of the fan (9) penetrates through the fan blades of the fan (9) and then is connected with the bearing (10), so that the fan blades of the fan (9) are located in the through holes.

10. An electric machine characterized by: a heat dissipating structure for an electric motor including the structure as claimed in any one of claims 1 to 9.