Explosion-proof brushless motor

Abstract

The utility model discloses an explosion-proof brushless motor, and relates to the brushless motor technology field, the explosion-proof brushless motor comprises a brushless motor body, a heat radiation mechanism and an air induction mechanism, the heat radiation mechanism is arranged on the outer wall of the brushless motor body, the heat radiation mechanism comprises a plurality of connecting fins, the plurality of connecting fins are fixedly connected to the outer wall of the brushless motor body, and the air induction mechanism is arranged on the outer wall of the brushless motor body. The air inducing mechanism is arranged outside the heat dissipation mechanism and used for guiding airflow generated by the brushless motor to the position of the heat dissipation mechanism. Heat generated by the brushless motor during working can be discharged through the connecting fins, the contact area with the outside is increased through the wavy connecting fins, so that the heat conduction effect of the connecting fins is improved, meanwhile, airflow can be blown into the two adjacent connecting fins through the air inducing mechanism, and the heat dissipation efficiency of the brushless motor is improved. Therefore, heat on the connecting fins can be quickly taken away, the heat conduction effect is further improved, the danger of explosion caused by internal heat accumulation in the brushless motor is avoided, and the working safety of the brushless motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brushless motors, in particular to an explosion-proof brushless motor. Background Art

[0002] Brushless motors use semiconductor switching devices to achieve electronic commutation, that is, electronic switching devices are used to replace traditional contact commutators and brushes.

[0003] When a brushless motor is working, the internal coils and wires have a certain resistance, which causes a certain amount of heat to be generated when current passes through. The changes and interactions of the internal magnetic field of the brushless motor will also cause energy loss and generate heat. In addition, due to mechanical friction when the brushless motor is working, heat will be generated when the brushless motor is working.

[0004] However, the brushless motor now has a compact structure and a small internal space, which causes the heat generated by the brushless motor when it is working to easily accumulate inside the brushless motor. As a result, the brushless motor is prone to explosion when too much heat accumulates, thereby reducing the safety of the brushless motor. Utility Model Content

[0005] The purpose of the present utility model is to provide an explosion-proof brushless motor to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an explosion-proof brushless motor, comprising:

[0007] Brushless motor body;

[0008] A heat dissipation mechanism, the heat dissipation mechanism is arranged on the outer wall of the brushless motor body, the heat dissipation mechanism includes a plurality of connecting fins, and the plurality of connecting fins are fixedly connected to the outer wall of the brushless motor body;

[0009] The air induction mechanism is arranged outside the heat dissipation mechanism and is used to guide the airflow generated by the brushless motor to the position of the heat dissipation mechanism.

[0010] Preferably, the bottom end of the brushless motor body is fixedly connected to a bottom frame, and the top end of the bottom frame is provided with a spiral air duct.

[0011] Preferably, the connecting fins are arranged in a wave shape, the connecting fins are fixedly connected to the outer wall of the brushless motor body in a ring array, and the material of the connecting fins is copper.

[0012] Preferably, the air ducting mechanism includes an air duct, which is sleeved on the outside of the brushless motor body, and one side of the multiple connecting fins is fixedly connected to the inner wall of the air duct. The air duct is made of copper, and an air ducting mechanism is provided below the air duct.

[0013] Preferably, the air guiding mechanism includes an air collecting hood, the top of the air collecting hood is fixedly connected to the bottom end of the air guiding duct, the air collecting hood is arranged above the bottom frame, the material of the air collecting hood is copper, and a fixing mechanism is provided between the air collecting hood and the bottom frame.

[0014] Preferably, the fixing mechanism includes a fixing plate, which is fixedly connected to the outer wall of the wind collecting hood. The outer wall of the fixing plate is provided with a socket, and the inner wall of the socket is movably connected with a fixing bolt. The outer wall of the bottom frame is provided with a threaded hole, and the outer wall of the fixing bolt is threadedly connected to the inner wall of the threaded hole.

[0015] The technical effects and advantages of this utility model are:

[0016] The utility model utilizes the setting of connecting fins, and fixes the wavy connecting fins made of copper at intervals on the outer wall of the brushless motor body, so that the connecting fins can discharge the heat generated by the brushless motor through the connecting fins, and the wavy connecting fins increase the contact area with the outside world, thereby improving the heat conduction effect of the connecting fins. At the same time, the air induction mechanism can blow an air flow with a higher flow rate into two adjacent connecting fins, which can quickly take away the heat on the connecting fins, further improving the heat conduction effect, avoiding the risk of explosion due to internal heat accumulation in the brushless motor, and improving the safety of the brushless motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the connecting fins of the utility model.

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the air guide pipe of the utility model.

[0020] In the figure: 101, brushless motor body; 201, connecting fins; 301, air guide duct; 401, air collecting cover; 501, fixing plate; 502, socket; 503, fixing bolt; 504, threaded hole; 601, bottom frame; 602, spiral air duct. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides Figure 1-Figure 3 The explosion-proof brushless motor shown includes a brushless motor body 101, a heat dissipation mechanism, and an air induction mechanism. Two electrode sheets are provided at the top of the brushless motor body 101, which serve as the positive and negative electrodes of the brushless motor. By connecting the external circuit to the positive and negative electrodes, the brushless motor can be powered on and operate.

[0023] In a preferred embodiment, a heat dissipation mechanism is provided on the outer wall of the brushless motor body 101, and the heat dissipation mechanism includes a plurality of connecting fins 201, and the plurality of connecting fins 201 are fixedly connected to the outer wall of the brushless motor body 101. The wavy connecting fins 201 made of copper are fixed to the outer wall of the brushless motor body 101 at intervals, so that the connecting fins 201 can discharge the heat generated by the operation of the brushless motor through the connecting fins 201, and the wavy connecting fins 201 increase the contact area with the outside world, thereby improving the heat conduction effect of the connecting fins 201. At the same time, the air induction mechanism can blow a high flow rate of air into two adjacent connecting fins 201, which can quickly take away the heat on the connecting fins 201, further improving the heat conduction effect, avoiding the risk of explosion due to internal heat accumulation inside the brushless motor, and improving the safety of the brushless motor.

[0024] In a preferred embodiment, the air induced mechanism is arranged outside the heat dissipation mechanism, and the air induced mechanism is used to guide the airflow generated by the brushless motor to the position of the heat dissipation mechanism. Through the setting of the air induced mechanism, the airflow generated by the brushless motor when working can enter between two adjacent connecting fins 201, thereby increasing the air flow between the two adjacent connecting fins 201, so that the heat in the connecting fins 201 can be quickly dissipated with the airflow, thereby improving the heat dissipation effect of the heat dissipation mechanism.

[0025] Among them, the bottom end of the brushless motor body 101 is fixedly connected to the bottom frame 601, and a spiral air duct 602 is provided at the top of the bottom frame 601. An air inlet is provided at the bottom end of the bottom frame 601, and a fan blade connected to the main shaft of the brushless motor is provided in the air inlet. The air can be allowed to enter the air inlet by rotating the fan blade, and then the wind is discharged from the spiral air duct 602. The spiral air duct 602 is a spiral air outlet. This kind of wind is not only strong, but also has a longer wind distance, which can effectively promote air flow.

[0026] The connecting fins 201 are arranged in a wavy shape and are fixedly connected to the outer wall of the brushless motor body 101 in a ring array. The connecting fins 201 are made of copper. The wavy connecting fins 201 have a larger surface area, thereby increasing the contact area between the connecting fins 201 and the outside world, making the connecting fins 201 have a better heat dissipation effect. The crystal structure of copper is a face-centered cubic structure. This structure makes the distance between copper atoms relatively small, which is conducive to the rapid transfer of heat between atoms. The atoms of copper are closely arranged and the bonding force between atoms is strong, which helps to efficiently conduct heat in the lattice. Copper has a large number of free electrons. These free electrons move quickly in the lattice structure and become the main carrier of heat conduction. When heat is applied to copper, these free electrons can quickly absorb and transfer heat, making the heat more evenly distributed throughout the material. Copper's metal bonding is stronger than many other metals, which means that copper's electrons are more efficient in transferring energy within the metal. Therefore, copper can respond to temperature changes more quickly and effectively conduct heat from a high-temperature area to a low-temperature area, thereby making the copper connecting fins 201 more heat-conducting.

[0027] Among them, the air-inducing mechanism includes an air duct 301, which is sleeved on the outside of the brushless motor body 101. One side of multiple connecting fins 201 is fixedly connected to the inner wall of the air duct 301. The air duct 301 is made of copper. An air-inducing mechanism is arranged under the air duct 301. Through the arrangement of the air duct 301, the air duct mechanism can stably allow the airflow discharged from the spiral air duct 602 to enter the air duct 301. After the airflow enters the air duct 301, it will flow through the space between two adjacent connecting fins 201, thereby increasing the air flow speed between the connecting fins 201, so that the heat dissipation effect of the heat dissipation mechanism is better.

[0028] Among them, the air guide mechanism includes an air collecting hood 401, the top of the air collecting hood 401 is fixedly connected to the bottom end of the air guide duct 301, the air collecting hood 401 is arranged above the bottom frame 601, the air collecting hood 401 is made of copper, and a fixing mechanism is arranged between the air collecting hood 401 and the bottom frame 601. Through the setting of the air collecting hood 401, the airflow discharged from the spiral air duct 602 can stably pass through the air collecting hood 401 and enter the air guide duct 301.

[0029] Among them, the fixing mechanism includes a fixing plate 501, which is fixedly connected to the outer wall of the wind collecting hood 401. The outer wall of the fixing plate 501 is provided with a socket 502, and the inner wall of the socket 502 is movably connected with a fixing bolt 503. The outer wall of the bottom frame 601 is provided with a threaded hole 504, and the outer wall of the fixing bolt 503 is threadedly connected to the inner wall of the threaded hole 504. The fixing bolt 503 passes through the socket 502 and is tightened in the threaded hole 504, so that the fixing plate 501 and the bottom frame 601 can be fixed, so that the air guide mechanism can work stably, thereby improving the stability of the air guide mechanism.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Explosion-proof brushless motor, characterized by: include: Brushless motor body (101); A heat dissipation mechanism, the heat dissipation mechanism being arranged on the outer wall of the brushless motor body (101), the heat dissipation mechanism comprising a plurality of connecting fins (201), the plurality of connecting fins (201) being fixedly connected to the outer wall of the brushless motor body (101); The air induction mechanism is arranged outside the heat dissipation mechanism and is used to guide the airflow generated by the brushless motor to the position of the heat dissipation mechanism.

2. The explosion-proof brushless motor according to claim 1, characterized in that: The bottom end of the brushless motor body (101) is fixedly connected to a bottom frame (601), and the top end of the bottom frame (601) is provided with a spiral air duct (602).

3. The explosion-proof brushless motor according to claim 1, characterized in that: The connecting fins (201) are arranged in a wave shape, and are fixedly connected to the outer wall of the brushless motor body (101) in an annular array. The connecting fins (201) are made of copper.

4. The explosion-proof brushless motor according to claim 2, characterized in that: The air induction mechanism comprises an air guide pipe (301), the air guide pipe (301) is sleeved on the outside of the brushless motor body (101), one side of the plurality of connecting fins (201) is fixedly connected to the inner wall of the air guide pipe (301), the material of the air guide pipe (301) is copper, and an air guide mechanism is provided below the air guide pipe (301).

5. The explosion-proof brushless motor according to claim 4, characterized in that: The air guide mechanism comprises an air collecting hood (401), the top end of the air collecting hood (401) is fixedly connected to the bottom end of the air guide pipe (301), the air collecting hood (401) is arranged above the bottom frame (601), the material of the air collecting hood (401) is copper, and a fixing mechanism is arranged between the air collecting hood (401) and the bottom frame (601).

6. The explosion-proof brushless motor according to claim 5, characterized in that: The fixing mechanism comprises a fixing plate (501), the fixing plate (501) is fixedly connected to the outer wall of the wind collecting cover (401), the outer wall of the fixing plate (501) is provided with a socket (502), the inner wall of the socket (502) is movably connected with a fixing bolt (503), the outer wall of the bottom frame (601) is provided with a threaded hole (504), and the outer wall of the fixing bolt (503) is threadedly connected to the inner wall of the threaded hole (504).

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