Direct-current brushless motor with aluminum alloy casing

Abstract

The utility model relates to the technical field of direct current brushless motors, and discloses a direct current brushless motor with an aluminum alloy casing, which comprises a rear end cover and a front end cover, an aluminum alloy casing is arranged between the rear end cover and the front end cover, and a plurality of bolts are arranged on the rear end cover and the front end cover. The rear end cover and the aluminum alloy shell are fixed through a plurality of bolts, the front end cover and the aluminum alloy shell are fixed through a plurality of bolts, two supporting plates are fixed to the bottom of the aluminum alloy shell, and a water tank is fixed between the two supporting plates. Water in the water tank and water in the aluminum alloy shell can be driven to flow circularly through the water pump in the water tank, so that the aluminum alloy shell can conduct heat to the water tank depending on the heat conductivity of the aluminum alloy shell and can also conduct out heat generated by operation of the direct-current brushless motor with the help of water. Therefore, the direct-current brushless motor can be rapidly cooled with the help of external air and the water tank, and the heat dissipation requirement of the direct-current brushless motor can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of direct current brushless motors, and more specifically, to a direct current brushless motor with a casing made of aluminum alloy. Background Art

[0002] The brushless DC motor consists of an electric motor and a driver. It has the advantages of a traditional DC motor, but without the carbon brushes and slip rings. It 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. It is widely used in industries such as automobiles, automation, aerospace, and home appliances.

[0003] Aluminum alloy has low density but high strength, close to or exceeding high-quality steel, good plasticity, can be processed into various profiles, and has excellent electrical conductivity, thermal conductivity and corrosion resistance. Therefore, it is often used as a raw material for the DC brushless motor housing. However, if the thermal conductivity of the aluminum alloy housing is relied on to help the DC brushless motor dissipate heat, its heat dissipation efficiency is difficult to meet the requirements of long-term operation of the DC brushless motor. The accumulation of heat will reduce the operating efficiency of the DC brushless motor and affect the service life of the DC brushless motor. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a brushless DC motor with an aluminum alloy casing. A water pump in the water tank can drive the water inside the water tank and the water inside the aluminum alloy casing to circulate, so that the aluminum alloy casing can not only rely on its own thermal conductivity to transfer heat to the water tank, but also use water to conduct the heat generated by the operation of the brushless DC motor, so that the brushless DC motor can be quickly cooled down with the help of the outside air and the water tank.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a brushless DC motor with an aluminum alloy casing, comprising a rear end cover and a front end cover, an aluminum alloy shell is arranged between the rear end cover and the front end cover, a plurality of bolts are arranged on the rear end cover and the front end cover, and the rear end cover and the aluminum alloy shell, and the front end cover and the aluminum alloy shell are fixed by a plurality of bolts, two support plates are fixed to the bottom of the aluminum alloy shell, a water tank is fixed between the two support plates, a plurality of semiconductor refrigeration plates are arranged between the water tank and the aluminum alloy shell, a pad and a plurality of heat dissipation fins are fixed to the bottom of the water tank, a water pump is arranged inside the water tank, a water outlet end of the water pump is fixedly connected with a water pipe, the water pipe is connected with the aluminum alloy shell, and a reflux pipe is fixedly connected between the water tank and the aluminum alloy shell.

[0006] As a preferred technical solution of the utility model, a plurality of the heat dissipation fins are arranged in a linear manner, and a plurality of the heat dissipation fins are arranged on both sides of the pad.

[0007] As a preferred technical solution of the utility model, a water injection pipe is fixedly passed through one side of the water tank, and a valve is arranged on the water injection pipe.

[0008] As a preferred technical solution of the utility model, a base is fixed at the bottom of the two support plates, the cushion block is fixedly mounted on the base, and a plurality of mounting holes are opened on the base.

[0009] As a preferred technical solution of the utility model, sealing gaskets are provided at the joints between the rear end cover and the aluminum alloy shell, and at the joints between the front end cover and the aluminum alloy shell.

[0010] As a preferred technical solution of the utility model, the aluminum alloy shell includes two flanges, an inner shell and an outer shell are fixed between the two flanges, the outer shell is sleeved on the outside of the inner shell, a groove matching the semiconductor refrigeration plate is provided at the bottom of the outer shell, a water storage cavity is formed between the inner shell and the outer shell, a plurality of first partitions arranged in a linear manner are fixed to the outer wall of the inner shell, a plurality of second partitions arranged in a linear manner are fixed to the inner wall of the outer shell, the plurality of first partitions and the plurality of second partitions are spaced apart, and the plurality of first partitions and the plurality of second partitions are all located inside the water storage cavity.

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

[0012] 1. The utility model can drive the water inside the water tank and the water inside the aluminum alloy shell to circulate through the water pump in the water tank, so that the aluminum alloy shell can not only transfer heat to the water tank by relying on its own thermal conductivity, but also conduct the heat generated by the operation of the DC brushless motor with the help of water, so that the DC brushless motor can be quickly cooled down with the help of the outside air and the water tank, and the heat dissipation requirements of the DC brushless motor can be better met.

[0013] 2. The utility model can cool down the aluminum alloy shell through the semiconductor refrigeration sheet, so that the cooling efficiency of the DC brushless motor is further improved; with the help of the mutual cooperation of a plurality of first baffles and a plurality of second baffles, the water flows in the water storage chamber in a unidirectional serpentine shape, which can ensure that the water in the water storage chamber and the aluminum alloy shell have sufficient heat exchange, thereby improving the cooling effect of the DC brushless motor. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is a schematic diagram of the structure of the water tank, semiconductor cooling sheet, heat dissipation fins and base in the utility model;

[0016] Figure 3It is a three-dimensional structural schematic diagram of the aluminum alloy shell in the utility model;

[0017] Figure 4 It is a longitudinal section view of the aluminum alloy shell in the utility model.

[0018] In the figure: 1. rear end cover; 2. front end cover; 3. bolts; 4. support plate; 5. water tank; 6. semiconductor refrigeration plate; 7. gasket; 8. heat dissipation fin; 9. water supply pipe; 10. return pipe; 11. water injection pipe; 12. base; 13. mounting hole; 14. sealing gasket; 15. flange; 16. inner shell; 17. outer shell; 18. groove; 19. water storage chamber; 20. first partition; 21. second partition. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figures 1 to 4 As shown, the utility model provides a DC brushless motor with an aluminum alloy casing, including a rear cover 1 and a front cover 2, an aluminum alloy shell is arranged between the rear cover 1 and the front cover 2, and a sealing gasket 14 is arranged at the junction of the rear cover 1 and the aluminum alloy shell, and at the junction of the front cover 2 and the aluminum alloy shell, a plurality of bolts 3 are arranged on the rear cover 1 and the front cover 2, and the rear cover 1 and the aluminum alloy shell, and the front cover 2 and the aluminum alloy shell are fixed by a plurality of bolts 3, two support plates 4 are fixed to the bottom of the aluminum alloy shell, a water tank 5 is fixed between the two support plates 4, and a plurality of semiconductor cooling sheets 6 are arranged between the water tank 5 and the aluminum alloy shell, and a built-in driving machine body and a motor rotor body are loaded inside the aluminum alloy shell, and the built-in driving machine body is connected to the motor rotor body by the built-in driving machine body. The motive body drives the motor rotor body to rotate, so that the motor rotor body can cut the magnetic flux lines, so as to realize the rotation of the motor rotor body. A pad 7 is fixed at the bottom of the water tank 5, and a water pump is arranged inside the water tank 5. The water outlet end of the water pump is fixedly connected with a water pipe 9, and the water pipe 9 is connected with the aluminum alloy shell. A return pipe 10 is fixedly connected between the water tank 5 and the aluminum alloy shell. A water injection pipe 11 is fixed through one side of the water tank 5, and a valve is arranged on the water injection pipe 11. A base 12 is fixed at the bottom of the two support plates 4, and the pad 7 is fixedly installed on the base 12. A plurality of mounting holes 13 are opened on the base 12. The rear end cover 1, the front end cover 2, the support plate 4, the water tank 5, the pad 7 and the base 12 are all made of aluminum alloy material.

[0021] The water pump in the water tank 5 can drive the water inside the water tank 5 and the water inside the aluminum alloy shell to circulate, so that the aluminum alloy shell can not only rely on its own thermal conductivity to transfer heat to the water tank 5, but also use the water to conduct the heat generated by the operation of the DC brushless motor. The DC brushless motor can be quickly cooled down with the help of the outside air and the water tank 5, and the heat dissipation requirements of the DC brushless motor can be better met. The aluminum alloy shell can be cooled down with the help of the semiconductor refrigeration sheet 6, so that the cooling efficiency of the DC brushless motor is further improved.

[0022] A plurality of heat dissipation fins 8 arranged in a linear manner are fixed to the bottom of the water tank 5 , and the plurality of heat dissipation fins 8 are arranged on both sides of the cushion block 7 .

[0023] With the help of multiple heat dissipation fins 8 arranged at the bottom of the water tank 5, the contact area between the water tank 5 and the outside air can be increased, so that the cooling effect of the water in the water tank 5 is better, so as to better meet the heat dissipation requirements of the DC brushless motor under long-term operation.

[0024] Among them, the aluminum alloy shell includes two flanges 15, an inner shell 16 and an outer shell 17 are fixed between the two flanges 15, the outer shell 17 is sleeved on the outside of the inner shell 16, and a groove 18 compatible with the semiconductor refrigeration plate 6 is opened at the bottom of the outer shell 17. A water storage chamber 19 is formed between the inner shell 16 and the outer shell 17. A plurality of first partitions 20 arranged in a linear manner are fixed to the outer wall of the inner shell 16, and a plurality of second partitions 21 arranged in a linear manner are fixed to the inner wall of the outer shell 17. The plurality of first partitions 20 and the plurality of second partitions 21 are arranged at intervals, and the plurality of first partitions 20 and the plurality of second partitions 21 are both located inside the water storage chamber 19.

[0025] With the help of the mutual cooperation of multiple first partitions 20 and multiple second partitions 21, water flows in the water storage chamber 19 in a one-way serpentine shape, which can ensure that the water in the water storage chamber 19 fully exchanges heat with the aluminum alloy shell and improve the cooling effect of the DC brushless motor.

[0026] The working principle and use process of this utility model:

[0027] The rear end cover 1 and the front end cover 2 are fixed to the two ends of the aluminum alloy shell by bolts 3. Sealing pads 14 are arranged between the rear end cover 1 and the aluminum alloy shell, and between the front end cover 2 and the aluminum alloy shell, so as to enhance the tightness of the connection between the three. The DC brushless motor generates heat when it is running. The aluminum alloy shell can exchange heat with the outside air by virtue of its own thermal conductivity to achieve initial cooling. The semiconductor cooling sheet 6 is powered on, and the semiconductor cooling sheet 6 helps the aluminum alloy shell to cool down, so that the cooling efficiency of the aluminum alloy shell is further improved.

[0028] Start the water pump in the water tank 5 so that the water pump drives the water exchange flow between the water tank 5 and the aluminum alloy shell, which can accelerate the cooling efficiency of the aluminum alloy shell. The multiple heat dissipation fins 8 arranged at the bottom of the water tank 5 can increase the contact area between the water tank 5 and the outside air, so that the cooling efficiency of the water in the water tank 5 can be improved. In this way, the water in the water tank 5 can continuously cool the DC brushless motor with the help of the water pump.

[0029] 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.

[0030] Although 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 having a housing made of aluminum alloy, comprising a rear end cover (1) and a front end cover (2), characterized in that: An aluminum alloy shell is arranged between the rear end cover (1) and the front end cover (2), a plurality of bolts (3) are arranged on the rear end cover (1) and the front end cover (2), and the rear end cover (1) and the aluminum alloy shell, and the front end cover (2) and the aluminum alloy shell are fixed by the plurality of bolts (3), two support plates (4) are fixed to the bottom of the aluminum alloy shell, a water tank (5) is fixed between the two support plates (4), a plurality of semiconductor cooling plates (6) are arranged between the water tank (5) and the aluminum alloy shell, a cushion block (7) and a plurality of heat dissipation fins (8) are fixed to the bottom of the water tank (5), a water pump is arranged inside the water tank (5), a water outlet end of the water pump is fixedly connected to a water delivery pipe (9), the water delivery pipe (9) is connected to the aluminum alloy shell, and a return pipe (10) is fixedly connected between the water tank (5) and the aluminum alloy shell.

2. A brushless DC motor with an aluminum alloy housing according to claim 1, characterized in that: The plurality of heat dissipation fins (8) are arranged in a linear arrangement, and the plurality of heat dissipation fins (8) are arranged on both sides of the pad (7).

3. The brushless DC motor with an aluminum alloy housing according to claim 1, characterized in that: A water injection pipe (11) is fixedly passed through one side of the water tank (5), and a valve is provided on the water injection pipe (11).

4. The brushless DC motor with an aluminum alloy housing according to claim 1, characterized in that: A base (12) is fixed at the bottom of the two support plates (4), the cushion block (7) is fixedly mounted on the base (12), and a plurality of mounting holes (13) are provided on the base (12).

5. The brushless DC motor with an aluminum alloy housing according to claim 1, characterized in that: A sealing gasket (14) is provided at the joint between the rear end cover (1) and the aluminum alloy shell, and at the joint between the front end cover (2) and the aluminum alloy shell.

6. The brushless DC motor with an aluminum alloy housing according to claim 1, characterized in that: The aluminum alloy shell comprises two flanges (15), an inner shell (16) and an outer shell (17) are fixed between the two flanges (15), the outer shell (17) is sleeved on the outside of the inner shell (16), a groove (18) adapted to the semiconductor refrigeration plate (6) is provided at the bottom of the outer shell (17), a water storage chamber (19) is formed between the inner shell (16) and the outer shell (17), a plurality of first partitions (20) arranged in a linear arrangement are fixed to the outer wall of the inner shell (16), a plurality of second partitions (21) arranged in a linear arrangement are fixed to the inner wall of the outer shell (17), the plurality of first partitions (20) and the plurality of second partitions (21) are arranged at intervals, and the plurality of first partitions (20) and the plurality of second partitions (21) are both located inside the water storage chamber (19).

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