Direct-current brushless motor with noise reduction mechanism

Abstract

The utility model relates to the technical field of motor noise reduction, and discloses a direct current brushless motor with a noise reduction mechanism, which comprises a bottom plate and a motor main body, a first water tank, a water pump and a second water tank are arranged on the upper surface of the bottom plate, a noise reduction box is fixed at the tops of the first water tank and the second water tank, and a cooling box is fixed at the bottom of the inner side of the noise reduction box. A fixing assembly is arranged at the top of the cooling box and used for fixing the motor body in the noise reduction box. Water in the first water tank, the second water tank and the heat exchange pipes is driven by the water pump to circularly flow, and the first water tank and the second water tank are arranged outside the noise reduction box and can directly exchange heat with the external environment, so that heat generated by the motor body in the noise reduction box is guided out through the first water tank and the second water tank; in this way, it can be ensured that the motor body can still dissipate heat in order in a completely-wrapped state, and the motor body is subjected to noise reduction treatment and temperature reduction treatment.

Description

Technical Field

[0001] The utility model relates to the technical field of motor noise reduction, and more specifically, to a brushless DC motor with a noise reduction mechanism. Background Art

[0002] Brushless DC motor is a kind of motor with wide application and stable performance, and it is an important driving component in many fields. Brushless DC motor is composed of motor body and driver, which has the advantages of traditional DC motor, and eliminates carbon brush and slip ring structure, and can run at low speed and high power. It is not only small in size and light in weight, but also has the advantages of good stability, high efficiency, long life, low noise and good speed-torque characteristics, and is widely used in automobile, automation, aerospace, household appliances and other industries.

[0003] The motor will generate certain noise during operation. As we all know, complete wrapping is the best means of noise reduction. However, the DC brushless motor will generate heat during operation. The heat cannot be discharged in time when the DC brushless motor is fully wrapped, which will cause the DC brushless motor to operate inefficiently and even burn out the internal circuits of the DC brushless motor. The opening of the vents will cause noise to be transmitted, which will greatly reduce the noise reduction effect and make it difficult to meet the noise reduction needs. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a brushless DC motor with a noise reduction mechanism, which drives the water in a first water tank, a second water tank and a plurality of heat exchange tubes to circulate through a water pump. Because the first water tank and the second water tank are arranged outside the noise reduction box, they can directly exchange heat with the external environment, so that the heat generated by the motor body inside the noise reduction box is discharged through the first water tank and the second water tank.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a DC brushless motor with a noise reduction mechanism, comprising a base plate and a motor body, a first water tank, a water pump and a second water tank are arranged on the upper surface of the base plate, a noise reduction box is fixed on the top of the first water tank and the second water tank, a cooling box is fixed on the bottom of the inner side of the noise reduction box, a fixing assembly is arranged on the top of the cooling box, and the fixing assembly is used to fix the motor body in the noise reduction box, two ventilation pipes are fixed through the top of the cooling box, a ventilation fan is arranged inside one of the ventilation pipes, a plurality of heat exchange pipes are fixedly connected between the first water tank and the second water tank, and the heat exchange pipes pass through the cooling box, semiconductor refrigeration sheets are arranged on the outside of the first water tank and the second water tank, a first water delivery pipe is fixedly connected between the first water tank and the water pump, and a second water delivery pipe is fixedly connected between the water pump and the second water tank, a box cover is arranged on the fixing assembly, a through hole for the output shaft of the motor body to pass through is opened on the box cover, and a plurality of bolts are arranged on the box cover, and the plurality of bolts are used to fix the noise reduction box and the box cover.

[0006] As a preferred technical solution of the utility model, the interior of the noise reduction box and the box cover are both provided with sound insulation cotton, a water inlet pipe is fixedly passed through the first water tank, and a valve is provided on the water inlet pipe.

[0007] As a preferred technical solution of the utility model, the fixing assembly includes a slide rail, a clamp and two sets of fixing blocks. The slide rail is fixedly installed on the top of the cooling box. A slider is slidably arranged in the slide rail. The box cover is fixedly installed on the outer end of the slider.

[0008] As a preferred technical solution of the utility model, limit rods are fixed to the front and rear sides of the sliding block, and a limit groove for the limit rod to slide is provided on the sliding rail.

[0009] As a preferred technical solution of the utility model, a support plate is fixed on the top of the slider, the clamping plate is located directly above the support plate, a group of fixed blocks has two in number, and one of the fixed blocks is fixedly mounted on the support plate, and the other fixed block is fixedly mounted on the clamping plate.

[0010] As a preferred technical solution of the utility model, a group of the fixing blocks are provided with stud screws, a slot for the stud screws to pass through is opened on the fixing blocks, two nuts are threadedly connected on the stud screws, a group of the fixing blocks are located between the two nuts, and rubber pads are provided on the support plate and the clamping plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model drives the water in the first water tank, the second water tank and a plurality of heat exchange tubes to circulate through a water pump. Since the first water tank and the second water tank are arranged outside the noise reduction box, they can directly exchange heat with the external environment, so that the heat generated by the motor body inside the noise reduction box is discharged through the first water tank and the second water tank. In this way, it can be ensured that the motor body can still dissipate heat in an orderly manner when it is in a completely wrapped state, so that the motor body can be treated with both noise reduction and temperature reduction. The ventilation fan can drive the air in the noise reduction box to exchange and circulate with the air in the cooling box, so as to better help the motor body to cool down. The use of semiconductor refrigeration sheets can speed up the cooling efficiency of the water in the first water tank and the second water tank, so that the cooling efficiency of the motor body is improved accordingly.

[0013] 2. The utility model can clamp and fix the motor body placed between the support plate and the clamping plate through the stud screws and two nuts. The rubber pad can provide shock-absorbing protection for the motor body. The slider can slide in the slide rail so that the support plate can be pulled out of the noise reduction box, which makes the loading and unloading of the motor body more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the noise reduction box in the utility model;

[0016] Figure 3 It is a longitudinal section view of the noise reduction box, cooling box and ventilation pipe in the utility model;

[0017] Figure 4 It is a schematic diagram of the overall structure of the fixing assembly in the utility model;

[0018] Figure 5 It is a partial structural schematic diagram of the fixing component in the utility model.

[0019] In the figure: 1. bottom plate; 2. first water tank; 3. water pump; 4. second water tank; 5. noise reduction box; 6. cooling box; 7. ventilation pipe; 8. ventilation fan; 9. heat exchange pipe; 10. semiconductor refrigeration plate; 11. first water pipe; 12. second water pipe; 13. motor body; 14. box cover; 15. bolt; 16. sound insulation cotton; 17. slide rail; 18. slider; 19. limit rod; 20. limit groove; 21. support plate; 22. splint; 23. fixing block; 24. stud screw; 25. slot; 26. nut; 27. rubber pad. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figures 1 to 5 As shown, the utility model provides a brushless DC motor with a noise reduction mechanism, including a bottom plate 1 and a motor body 13, the upper surface of the bottom plate 1 is provided with a first water tank 2, a water pump 3 and a second water tank 4, a water inlet pipe is fixedly passed through the first water tank 2, a valve is provided on the water inlet pipe, a noise reduction box 5 is fixedly provided on the top of the first water tank 2 and the second water tank 4, a cooling box 6 is fixedly provided on the bottom of the inner side of the noise reduction box 5, a fixing component is provided on the top of the cooling box 6, and the fixing component is used to fix the motor body 13 in the noise reduction box 5, two ventilation pipes 7 are fixedly passed through the top of the cooling box 6, a ventilation fan 8 is provided inside one of the ventilation pipes 7, the first water tank 2 is provided with a water pump 3 and a second water tank 4 is provided with a water pump 3 and a valve, a noise reduction box 5 is fixedly provided on the top of the first water tank 2 and the second water tank 4, a cooling box 6 is fixedly provided on the bottom of the inner side of the noise reduction box 5, a fixing component is provided on the top of the cooling box 6, and the fixing component is used to fix the motor body 13 in the noise reduction box 5, two ventilation pipes 7 are fixedly provided on the top of the cooling box 6, a ventilation fan 8 is provided inside one of the ventilation pipes 7, A plurality of heat exchange tubes 9 are fixedly connected between the first water tank 2 and the second water tank 4, and the heat exchange tubes 9 pass through the cooling box 6. Semiconductor refrigeration plates 10 are arranged on the outside of the first water tank 2 and the second water tank 4. A first water pipe 11 is fixedly connected between the first water tank 2 and the water pump 3, and a second water pipe 12 is fixedly connected between the water pump 3 and the second water tank 4. A box cover 14 is arranged on the fixed assembly, and a through hole is opened on the box cover 14 for the output shaft of the motor body 13 to pass through. Sound insulation cotton 16 is arranged inside the noise reduction box 5 and the box cover 14, and a plurality of bolts 15 are arranged on the box cover 14, and the plurality of bolts 15 are used to fix the noise reduction box 5 and the box cover 14.

[0022] The water pump 3 is used to drive the water in the first water tank 2, the second water tank 4 and the multiple heat exchange tubes 9 to circulate. Because the first water tank 2 and the second water tank 4 are arranged outside the noise reduction box 5, they can directly exchange heat with the external environment, so that the heat generated by the motor body 13 inside the noise reduction box 5 is discharged through the first water tank 2 and the second water tank 4. In this way, it can be ensured that the motor body 13 can still dissipate heat in an orderly manner when it is in a completely wrapped state, so that the motor body 13 can be treated with both noise reduction and temperature reduction. The ventilation fan 8 can drive the air in the noise reduction box 5 to exchange and circulate with the air in the cooling box 6, so as to better help the motor body 13 to cool down. The use of the semiconductor refrigeration sheet 10 can accelerate the cooling efficiency of the water in the first water tank 2 and the second water tank 4, so that the cooling efficiency of the motor body 13 is improved accordingly.

[0023] Among them, the fixing assembly includes a slide rail 17, a clamping plate 22 and two groups of fixing blocks 23. The slide rail 17 is fixedly installed on the top of the cooling box 6. A slider 18 is slidably arranged in the slide rail 17. The box cover 14 is fixedly installed on the outer end of the slider 18. The front and rear sides of the slider 18 are fixed with a limiting rod 19. The slide rail 17 is provided with a limiting groove 20 for the sliding of the limiting rod 19.

[0024] The slide block 18 is designed to slide in the slide rail 17 so that the slide block 18 can be drawn out from the noise reduction box 5 , which makes it more convenient to load and unload the motor body 13 on the fixed assembly.

[0025] Among them, a support plate 21 is fixed to the top of the slider 18, and the clamping plate 22 is located directly above the support plate 21. There are two sets of fixed blocks 23, and one of the fixed blocks 23 is fixedly installed on the support plate 21, and the other fixed block 23 is fixedly installed on the clamping plate 22. A set of fixed blocks 23 is provided with stud screws 24, and a slot 25 for the stud screws 24 to pass through is opened on the fixed block 23. Two nuts 26 are threadedly connected to the stud screws 24. A set of fixed blocks 23 is located between the two nuts 26, and rubber pads 27 are provided on both the support plate 21 and the clamping plate 22.

[0026] The motor body 13 placed between the support plate 21 and the clamping plate 22 can be clamped and fixed by using the stud screws 24 and the two nuts 26 , and the rubber pad 27 can provide shock-absorbing protection for the motor body 13 .

[0027] The working principle and use process of this utility model:

[0028] When in use, pull the box cover 14 away from the noise reduction box 5, the box cover 14 will pull the slider 18 to slide in the slide rail 17, and the cooperation of the limit rod 19 and the limit groove 20 can prevent the slide rail 17 from being completely separated from the slider 18. After the support plate 21 is pulled out of the noise reduction box 5, the motor body 13 can be placed on the support plate 21, the clamping plate 22 is taken out to cover the top of the motor body 13, and the two stud screws 24 are taken out so that the two stud screws 24 are respectively inserted into the two sets of fixing blocks 23, and the two nuts 26 on the stud screws 24 are used to adjust the distance between the support plate 21 and the clamping plate 22 so that the two can clamp the motor body 13. After the motor body 13 is installed, the motor body 13 can be pushed into the interior of the noise reduction box 5, and the noise reduction box 5 and the box cover 14 are locked by bolts 15. At this time, the motor body 13 is completely wrapped, and the sound insulation cotton 16 in the noise reduction box 5 and the box cover 14 can prevent the noise from overflowing when the motor body 13 is running, thereby playing a noise reduction role.

[0029] When the motor body 13 is running, heat is generated, and the water pump 3 is started to operate. The water pump 3 can drive the water in the first water tank 2, the second water tank 4 and the multiple heat exchange tubes 9 to circulate. The ventilation fan 8 introduces the hot air in the noise reduction box 5 into the interior of the cooling box 6. The hot air and water exchange heat to cool down. The use of the semiconductor refrigeration plate 10 can speed up the cooling efficiency of the water in the first water tank 2 and the second water tank 4. The first water tank 2 and the second water tank 4 are exposed to the outside of the noise reduction box 5, and can directly exchange heat with the outside, so that the water in the first water tank 2 and the second water tank 4 can be cooled. This can not only meet the cooling demand of the motor body 13, but also ensure that the motor body 13 effectively reduces noise.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brushless DC motor with a noise reduction mechanism, comprising a base plate (1) and a motor body (13), characterized in that: The upper surface of the bottom plate (1) is provided with a first water tank (2), a water pump (3) and a second water tank (4); a noise reduction box (5) is fixed on the top of the first water tank (2) and the second water tank (4); a cooling box (6) is fixed on the bottom of the inner side of the noise reduction box (5); a fixing component is provided on the top of the cooling box (6); the fixing component is used to fix the motor body (13) in the noise reduction box (5); two ventilation pipes (7) are fixedly passed through the top of the cooling box (6); a ventilation fan (8) is provided inside one of the ventilation pipes (7); a plurality of heat exchange pipes (9) are fixedly connected between the first water tank (2) and the second water tank (4). The heat exchange tube (9) passes through the cooling box (6); semiconductor refrigeration plates (10) are arranged outside the first water tank (2) and the second water tank (4); a first water pipe (11) is fixedly connected between the first water tank (2) and the water pump (3); a second water pipe (12) is fixedly connected between the water pump (3) and the second water tank (4); a box cover (14) is arranged on the fixed assembly; a through hole is formed on the box cover (14) for the output shaft of the motor body (13) to pass through; a plurality of bolts (15) are arranged on the box cover (14); and the plurality of bolts (15) are used to fix the noise reduction box (5) and the box cover (14).

2. A brushless DC motor with a noise reduction mechanism according to claim 1, characterized in that: The interior of the noise reduction box (5) and the box cover (14) are both provided with sound insulation cotton (16), and a water inlet pipe is fixedly passed through the first water tank (2), and a valve is provided on the water inlet pipe.

3. A brushless DC motor with a noise reduction mechanism according to claim 1, characterized in that: The fixing assembly comprises a slide rail (17), a clamping plate (22) and two sets of fixing blocks (23); the slide rail (17) is fixedly mounted on the top of the cooling box (6); a slider (18) is slidably arranged in the slide rail (17); and the box cover (14) is fixedly mounted on the outer end of the slider (18).

4. A brushless DC motor with a noise reduction mechanism according to claim 3, characterized in that: Limit rods (19) are fixed to the front and rear sides of the sliding block (18), and a limit groove (20) for the limit rod (19) to slide is provided on the sliding rail (17).

5. A brushless DC motor with a noise reduction mechanism according to claim 3, characterized in that: A support plate (21) is fixed on the top of the slider (18), the clamping plate (22) is located directly above the support plate (21), and a set of two fixing blocks (23) is provided, one of the fixing blocks (23) is fixedly mounted on the support plate (21), and the other of the fixing blocks (23) is fixedly mounted on the clamping plate (22).

6. A brushless DC motor with a noise reduction mechanism according to claim 5, characterized in that: A set of the fixing blocks (23) is provided with a stud screw (24), a slot (25) for the stud screw (24) to pass through is provided on the fixing blocks (23), two nuts (26) are threadedly connected to the stud screw (24), and a set of the fixing blocks (23) is located between the two nuts (26), and rubber pads (27) are provided on the support plate (21) and the clamping plate (22).

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