Brushless motor with heat dissipation and noise reduction functions

Abstract

The utility model relates to the technical field of brushless motors, in particular to a brushless motor with heat dissipation and noise reduction functions, which comprises a shell. A front cover and a rear cover are arranged at the front end and the rear end of the shell respectively and fixedly connected with the shell through high-strength bolts, an inner sound insulation layer is fixedly connected to the inner wall of the shell, a front sound insulation layer is fixedly connected to the inner wall of the front cover, and a rear sound insulation layer is fixedly connected to the inner wall of the rear cover. A water cooling system is further arranged in the shell, the water cooling system achieves cooling of the brushless motor in the working process through water cooling, by means of the water cooling system, the internal temperature can be effectively reduced when the motor works, stable operation is ensured, meanwhile, a closed space is formed among an inner sound insulation layer, a front sound insulation layer and a rear sound insulation layer, and the motor is more stable in operation. Sound insulation and noise reduction of the brushless motor in the working process are achieved, working noise is remarkably reduced, and a more quiet operation environment is provided.

Description

TECHNICAL FIELD

[0001] The utility model relates to brushless motor technical field, concretely is a brushless motor with heat dissipation and noise reduction function. BACKGROUND

[0002] Permanent magnet brushless DC motor adopts permanent magnet material excitation, adopts electronic device to reverse, therefore has high efficiency, light weight, simple control, good reliability and other obvious advantages, has achieved successful application in computer equipment, mechanical equipment, medical equipment, automobile industry and household appliance etc.

[0003] The brushless motor needs to be handled in the use of noise reduction, the existing noise reduction device is mostly directly wrapped up in the use of brushless motor, thereby difficult guarantee the heat dissipation condition of brushless motor, cannot guarantee that brushless motor is under the good temperature and runs, makes brushless motor easy to damage. UTILITY MODEL CONTENTS

[0004] In view of the deficiency of prior art, the utility model provides a brushless motor with heat dissipation and noise reduction function can realize the sound insulation and noise reduction of brushless motor in the working process, provides more peaceful operation environment, and realizes the cooling of brushless motor.

[0005] In order to realize the above object, the utility model realizes through the following technical scheme:

[0006] A brushless motor with heat dissipation and noise reduction function, including the casing;

[0007] The front cover and rear cover are fixedly connected with the casing through high-strength bolts, and the front cover and rear cover are rotatably connected with the crankshaft, the outer portion of the crankshaft is fixedly connected with a permanent magnet, and the outer portion of the permanent magnet is provided with a winding coil;

[0008] The inner sound insulation layer is fixedly connected on the inner wall of the casing, the front sound insulation layer is fixedly connected on the inner wall of the front cover, and the rear sound insulation layer is fixedly connected on the inner wall of the rear cover, and the inner sound insulation layer, the front sound insulation layer and the rear sound insulation layer form a closed space;

[0009] The water cooling system is further arranged in the casing, and the water cooling system realizes the cooling of the brushless motor in the working process through water cooling.

[0010] Preferably, the inner sound insulation layer, the front sound insulation layer and the rear sound insulation layer are made of glass fiber material.

[0011] Preferably, the water cooling system comprises a circulating water pipe spirally arranged outside the winding coil, the circulating water pipe does not contact the winding coil, both ends of the circulating water pipe are spirally connected with pipe joints, and the pipe joints are installed on the casing.

[0012] Preferably, the circulating water pipe is made of stainless steel

[0013] Preferably, the pipe joint comprises a hollow pipe body, one end of the pipe body is fixedly connected with the first joint, and the other end of the pipe body is screw-connected with the second joint, and the second joint is screw-connected with one end of the circulating water pipe.

[0014] The utility model provides a brushless motor with heat dissipation and noise reduction function has the following beneficial effects:

[0015] 1. In the utility model, through adopting water cooling system, the internal temperature of motor can be effectively reduced when working, and stable operation is ensured, simultaneously, the closed space is formed between the inner sound insulation layer, front sound insulation layer and rear sound insulation layer, realizes the sound insulation and noise reduction of brushless motor in working process, and the working noise is reduced significantly, and more peaceful operation environment is provided.

[0016] 2. In the utility model, through the combination pipe joint of setting, the assembly process is simplified, and the production efficiency is improved. DRAWINGS

[0017] Figure 1 It is the whole structure schematic view of brushless motor in the utility model;

[0018] Figure 2 It is the internal structure schematic view of brushless motor in the utility model;

[0019] Figure 3 It is the structure schematic view of pipe joint in the utility model.

[0020] In the drawing: 1 - shell, 2 - rear cover plate, 3 - front cover plate, 4 - crankshaft, 5 - pipe joint, 7 - front sound insulation layer, 8 - rear sound insulation layer, 9 - circulating water pipe, 10 - inner sound insulation layer, 11 - coil, 12 - permanent magnet. DETAILED DESCRIPTION

[0021] In order to facilitate understanding of the utility model, the utility model will be described more comprehensively below with reference to relevant drawings. The preferred embodiment of the utility model is shown in the drawings. However, the utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Please see Figures 1-2 In this invention, a technical solution is provided:

[0025] A brushless motor with heat dissipation and noise reduction functions includes:

[0026] The housing 1 is a hollow outer shell made of alloy. A front cover 3 and a rear cover 2 are respectively provided at the front and rear ends of the housing 1. The front cover 3 and the rear cover 2 are fixedly connected to the housing 1 by high-strength bolts. The front cover 3 and the rear cover 2 are rotatably connected to the crankshaft 4. A permanent magnet 12 is fixedly connected to the outside of the crankshaft 4. A winding coil 11 is provided on the outside of the permanent magnet 12. An inner sound insulation layer 10 is fixedly connected to the inner wall of the housing 1. A front sound insulation layer 7 is fixedly connected to the inner wall of the front cover 3. A rear sound insulation layer 8 is fixedly connected to the inner wall of the rear cover 2. A sealed space is formed between the inner sound insulation layer 10, the front sound insulation layer 7 and the rear sound insulation layer 8 to achieve sound insulation and noise reduction of the brushless motor during operation. The housing 1 is also equipped with a water cooling system, which cools the brushless motor during operation through water cooling.

[0027] Furthermore, the inner sound insulation layer 10, the front sound insulation layer 7, and the rear sound insulation layer 8 are made of fiberglass. The fiberglass structure is porous and elastic, which can absorb and scatter sound waves, thereby reducing the speed and intensity of sound propagation. When sound waves pass through the sound insulation layer, their energy is absorbed and scattered, thus achieving the effect of noise reduction.

[0028] Furthermore, the water cooling system includes a circulating water pipe 9 spirally wrapped around the outside of the winding coil 11. The circulating water pipe 9 does not contact the winding coil 11 to avoid current interference. The circulating water pipe 9 is made of stainless steel. Both ends of the circulating water pipe 9 are spirally connected to pipe joints 5, and the pipe joints 5 are installed on the housing 1.

[0029] Further, the pipe joint 5 comprises a hollow pipe body 52, one end of the pipe body 52 is fixedly connected with the joint one 53, and the other end of the pipe body 52 is screw-connected with the joint two 51, and the joint two 51 is screw-connected with one end of the circulating water pipe 9, thus, by designing the pipe joint 5 as a combined joint, the installation of the pipe joint 5 is facilitated, and the assembly efficiency is improved.

[0030] Working principle: during assembly, first, the inner sound insulation layer 10 is wrapped on the inner wall of the shell 1, the front sound insulation layer 7 is wrapped on the inner wall of the front cover 3, and the rear sound insulation layer 8 is wrapped on the rear cover 2, the rear cover 2 is connected with the shell 1 through high-strength bolts, the winding coil 11 is arranged in the interior of the shell 1, then the crankshaft 4 and the permanent magnet 12 are placed in the interior of the winding coil 11, the crankshaft 4 is rotationally connected with the rear cover 2, the joint two 51 is screw-connected with one end of the circulating water pipe 9, then the whole pipe joint 5 is passed through the shell 1 and the inner sound insulation layer 10, finally, the joint one 53 is fixed on the shell 1, that is, the pipe joint 5 is assembled on the shell 1, at the same time, the circulating water pipe 9 is placed in the interior of the shell 1 and connected with the pipe joint 5, after completion, the front cover 3 is connected with the shell 1 through high-strength bolts, a closed space is formed between the inner sound insulation layer 10, the front sound insulation layer 7 and the rear sound insulation layer 8, the sound insulation and noise reduction of the brushless motor during working are realized, before the motor operates, the pipe joint 5 is connected with the external water pipe, when the motor works, the winding coil 11 and other components will generate heat, the circulating water pipe 9 takes away the heat in the interior of the motor by continuously circulating cooling water, so that the temperature of the motor is ensured to be kept in a safe range.

[0031] It should be noted that when the winding coil 11 passes through a specific sequence of current, a magnetic field is generated around it. The magnetic field generated by the permanent magnet 12 interacts with the magnetic field generated by the winding coil 11, thereby generating a torque to drive the rotation of the crankshaft 4. The brushless motor realizes electronic commutation through a driver (not explicitly shown in the figure, but is a key component of the brushless motor). The driver accurately controls the on-off and direction of the current in the winding coil 11 according to the rotor position information provided by the Hall sensor (or other position detection elements), thereby ensuring that the magnetic field always maintains a certain angle difference with the permanent magnet, generating a continuous torque. This is the prior art, and will not be described here.

[0032] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent substitutions or changes to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A brushless motor with heat dissipation and noise reduction function, characterized in that, Including shell (1); The front and rear ends of the shell (1) are respectively provided with a front cover (3) and a rear cover (2), the front cover (3) and the rear cover (2) are fixedly connected with the shell (1) through high-strength bolts, and the front cover (3) and the rear cover (2) are rotatably connected with the crankshaft (4), the outer portion of the crankshaft (4) is fixedly connected with a permanent magnet (12), and the outer portion of the permanent magnet (12) is provided with a winding coil (11); The inner wall of the shell (1) is fixedly connected with an inner sound insulation layer (10), the inner wall of the front cover (3) is fixedly connected with a front sound insulation layer (7), the inner wall of the rear cover (2) is fixedly connected with a rear sound insulation layer (8), and the inner sound insulation layer (10), the front sound insulation layer (7) and the rear sound insulation layer (8) form a closed space. The inside of the shell (1) is further provided with a water cooling system, and the water cooling system realizes cooling of the brushless motor during working through water cooling.

2. The brushless motor with heat dissipation and noise reduction function according to claim 1, characterized in that: The inner sound insulation layer (10), the front sound insulation layer (7) and the rear sound insulation layer (8) are made of glass fiber material.

3. The brushless motor with heat dissipation and noise reduction function according to claim 1, characterized in that: The water cooling system comprises a circulating water pipe (9) spirally surrounding the outside of the winding coil (11), the circulating water pipe (9) does not contact the winding coil (11), both ends of the circulating water pipe (9) are spirally connected with pipe joints (5), and the pipe joints (5) are installed on the shell (1).

4. The brushless motor with heat dissipation and noise reduction function according to claim 3, characterized in that: The circulating water pipe (9) is made of stainless steel material.

5. The brushless motor with heat-dissipation and noise-reduction functions according to claim 3, characterized in that: The pipe joint (5) comprises a hollow pipe body (52), one end of the pipe body (52) is fixedly connected with a joint one (53), the other end of the pipe body (52) is spirally connected with a joint two (51), and the joint two (51) is spirally connected with one end of the circulating water pipe (9).

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