A composite motor with integrated air cooling function

Abstract

The present invention discloses a composite motor with integrated air cooling function, which relates to the technical field of motors and comprises: an outer cylinder, the inner wall of which is fixed with a stator; a rotor, which is rotatably arranged inside the outer cylinder and matched with the stator; a baffle, which is fixed to the inner wall of the left end of the outer cylinder; wherein a plurality of cooling channels distributed in a circumferential array are provided in the cylinder wall of the outer cylinder, and the cooling channels run through the left and right ends of the outer cylinder; a contraction channel, a direct current channel and an expansion channel are sequentially formed in the cooling channels from right to left; a first side hole connected to the direct current channel is also provided in the inner wall of the outer cylinder; the first side hole is located on the left side of the stator; an air control duct is also embedded in the first side hole, and the air control duct adjusts its opening based on its own temperature, thereby taking into account both the heat dissipation and stability of the composite motor.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a composite motor with integrated air cooling function. Background Art

[0002] With the rapid development of modern industry and technology, motors, as core power components in various equipment and systems, have increasingly higher performance and reliability requirements. Especially in the fields of electricity, transportation, manufacturing, etc., motors must not only have efficient and stable operation capabilities, but also have excellent heat dissipation performance to ensure that the internal temperature of the motor is effectively controlled under long-term, high-load working conditions to avoid performance degradation or damage caused by overheating.

[0003] Traditional motor cooling technology mainly relies on natural cooling or simple air cooling structure. Natural cooling is usually suitable for motors with low power and low heat generation, and heat is dissipated through natural convection between the motor housing and the surrounding air. However, for high-power motors, especially modern motors with high integration and compact structure, natural cooling can no longer meet the heat dissipation requirements.

[0004] With the continuous advancement of motor technology, composite motors with integrated air cooling function have emerged. This type of motor not only has all the functions of traditional motors, but also achieves more efficient and reliable heat dissipation through innovative air cooling design. However, although the optimization of the air cooling structure improves the heat dissipation effect, it may also lead to the complexity of the air cooling system itself and increase the manufacturing cost. In addition, strong air cooling inside the motor may also cause unstable rotation of the rotor inside the motor.

[0005] Therefore, it is necessary to provide a composite motor with integrated air cooling function to solve the above problems. Summary of the invention

[0006] In order to solve the above problems, the present invention provides the following technical solution: a composite motor with integrated air cooling function, comprising:

[0007] An outer cylinder, the inner wall of which is fixed with a stator;

[0008] A rotor rotatably disposed inside the outer cylinder and matched with the stator;

[0009] A baffle plate fixed to the inner wall of the left end of the outer cylinder;

[0010] Wherein, a plurality of cooling channels distributed in a circumferential array are opened in the wall of the outer cylinder, and the cooling channels run through the left and right ends of the outer cylinder;

[0011] The cooling channel also forms a contraction channel, a direct flow channel and an expansion channel from right to left in sequence;

[0012] The inner wall of the outer cylinder is also provided with a first side hole connected to the direct current channel;

[0013] The first side hole is located on the left side of the stator;

[0014] An air control duct is also embedded in the first side hole, and the air control duct adjusts its opening based on its own temperature.

[0015] Preferably, the air control duct comprises:

[0016] A pipe body, wherein the middle portion of the pipe body has a wind control channel penetrating the pipe body;

[0017] Mounting holes and accommodating holes are correspondingly provided on both sides of the air control flow channel;

[0018] A two-way shape memory spring has one end fixedly embedded in the mounting hole and the other end capable of being accommodated in the accommodation hole.

[0019] Preferably, the two-way shape memory spring shows a contraction tendency under a temperature lower than a first temperature, and shows an extension tendency under a temperature higher than a second temperature, wherein the second temperature is higher than the first temperature.

[0020] Preferably, in the initial stage, the length of the two-way shape memory spring is greater than or equal to the sum of the axial length of the mounting hole and the diameter of the wind control channel.

[0021] Preferably, the right end of the outer cylinder is provided with an air collecting slot for collecting cooling airflow for the cooling channel;

[0022] The inner wall of the outer cylinder is further provided with a second side hole connected to the cooling channel, and the second side hole faces the air collecting groove.

[0023] Preferably, a wind plate is fixed to a side of the air collecting slot close to the outer cylinder, the wind plate is embedded in the inner wall of the outer cylinder, and a plurality of slots are provided on a side of the wind plate close to the stator.

[0024] Preferably, an elastic porous pad is embedded in the card slot.

[0025] Preferably, a clamping block is fixed on a side of the elastic porous pad facing the stator, and an arc-shaped groove is formed on a side of the clamping block facing the stator.

[0026] Preferably, the block is provided with a plurality of air vents located on both sides of the arc-shaped groove, and the air vents penetrate the block.

[0027] Compared with the prior art, the present invention provides a composite motor with integrated air cooling function, which has the following beneficial effects:

[0028] In the present invention, the cooling airflow introduced through the cooling channel exchanges heat with the heat inside the motor, takes the heat away and discharges it outside the motor, thereby achieving the effect of air-cooling and heat dissipation. A special channel structure is used to guide a small amount of cooling airflow inside the outer cylinder into the cooling channel, which not only ensures the heat dissipation effect but also avoids affecting the stability of the rotor or stator.

[0029] The central control air duct of the present invention can automatically adjust the opening according to the temperature, ensuring that the best heat dissipation effect can be maintained under different working conditions, and also ensuring the stable operation of the motor at different temperatures.

[0030] The central control air duct of the present invention combines the characteristics of a two-way shape memory spring to achieve intelligent and precise adjustment of the air flow rate, which not only improves the heat dissipation effect of the motor, but also reduces procurement costs and maintenance difficulties. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the main structure of a composite motor with integrated air cooling function;

[0032] Figure 2 A schematic diagram of the structure of an outer cylinder of a composite motor with integrated air cooling function;

[0033] Figure 3 A schematic diagram of the structure of a composite motor central control air duct with integrated air cooling function;

[0034] Figure 4 A schematic diagram of the structure of a wind board in a composite motor with integrated air cooling function;

[0035] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at point A;

[0036] Figure 6 A schematic diagram of the cooling airflow direction in a composite motor with integrated air cooling function;

[0037] In the figure: 1. outer cylinder; 2. stator; 3. rotor; 4. wind plate; 5. baffle; 6. air collecting slot; 7. air control duct; 11. cooling channel; 12. contraction channel; 13. direct current channel; 14. expansion channel; 15. first side hole; 16. second side hole; 31. rotor cooling hole; 41. slot; 42. elastic pore pad; 43. block; 44. arc slot; 45. air pore; 71. tube body; 72. air control channel; 73. mounting hole; 74. accommodation hole; 75. two-way shape memory spring. DETAILED DESCRIPTION

[0038] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned description of the drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, which is merely a way of distinguishing the objects of the same attributes when describing them in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0039] Please refer to Figure 1-Figure 6 In an embodiment of the present invention, a composite motor with integrated air cooling function is provided, comprising:

[0040] An outer cylinder 1, a stator 2 is fixed on the inner wall thereof;

[0041] A rotor 3, which is rotatably disposed inside the outer cylinder 1 and matched with the stator 2;

[0042] A baffle 5 is fixed to the inner wall of the left end of the outer tube 1;

[0043] The outer tube 1 has a plurality of cooling channels 11 arranged in a circumferential array in the wall thereof. The cooling channels 11 penetrate the left and right ends of the outer tube 1 and are used to introduce external cooling airflow.

[0044] The cooling channel 11 also forms a contraction channel 12, a direct flow channel 13 and an expansion channel 14 from right to left.

[0045] The inner wall of the outer cylinder 1 is also provided with a first side hole 15 connected to the direct current channel 13;

[0046] The first side hole 15 is located on the left side of the stator 2;

[0047] An air control tube 7 is also embedded in the first side hole 15, and the air control tube 7 adjusts its opening based on its own temperature.

[0048] The cooling channel 11 includes a contraction channel 12, a direct current channel 13 and an expansion channel 14 from right to left, forming a special channel structure. This channel structure can utilize the principle of fluid mechanics to generate a low-pressure area at the direct current channel 13, thereby guiding a small amount of cooling airflow inside the outer tube 1 to enter the cooling channel 11 through the first side hole 15.

[0049] Furthermore, since the first side hole 15 is located on the left side of the stator 2 , a small amount of cooling airflow can be guided from the right side of the stator 2 and the rotor 3 to the left side of the stator 2 and the rotor 3 , taking away the heat on the stator 2 and the rotor 3 and then entering the first side hole 15 .

[0050] Furthermore, a rotor cooling hole 31 is provided on the rotor 3 to further improve the cooling effect of the rotor 3 .

[0051] In addition, the air control pipe 7 is embedded in the first side hole 15. The air control pipe 7 can adjust its opening according to the temperature inside the outer tube 1, so as to control the air flow entering the cooling channel 11.

[0052] Specifically, when the temperature inside the outer cylinder 1 is high, the opening of the air control pipe 7 increases, allowing more airflow inside the outer cylinder 1 to enter the cooling channel 11 to enhance the heat dissipation effect. Conversely, when the temperature is low, the opening of the air control pipe 7 decreases, reducing the airflow to maintain the stable operation of the rotor 3.

[0053] That is to say, in this embodiment, the cooling airflow introduced through the cooling channel 11 performs heat exchange with the heat inside the composite motor, takes away the heat and discharges it outside the composite motor, thereby achieving the effect of air cooling and heat dissipation, wherein a small amount of cooling airflow inside the outer cylinder 1 is guided into the cooling channel 11 by a special channel structure, which not only ensures the heat dissipation effect, but also avoids affecting the stability of the rotor 3 or the stator 2. In addition, the air control pipe 7 can automatically adjust the opening according to the temperature, ensuring that the best heat dissipation effect can be maintained under different working conditions, and also ensuring the stable operation of the composite motor at different temperatures.

[0054] Specifically, the air control pipe 7 includes:

[0055] A tube body 71, wherein the middle portion of the tube body 71 has a wind control channel 72 passing through the tube body 71;

[0056] The mounting holes 73 and the receiving holes 74 are correspondingly opened on both sides of the air control channel 72;

[0057] One end of the two-way shape memory spring 75 is fixedly embedded in the mounting hole 73 , and the other end can be accommodated in the accommodation hole 74 .

[0058] The two-way shape memory spring 75 has a contraction tendency when the temperature is lower than the first temperature, and has an extension tendency when the temperature is higher than the second temperature, and the second temperature is higher than the first temperature.

[0059] The two-way shape memory spring 75 is a special spring that can present different shapes (contract or extend) at different temperatures. Specifically, when the temperature is lower than the first temperature, the two-way shape memory spring 75 tends to contract, and the overall length of the two-way shape memory spring 75 is small, and the gap of the two-way shape memory spring 75 is also small, which limits the amount of cooling airflow. When the temperature is higher than the second temperature, the two-way shape memory spring 75 tends to extend, and the overall length of the two-way shape memory spring 75 increases, and the gap of the two-way shape memory spring 75 also increases, thereby allowing more cooling airflow to pass.

[0060] The introduction of the two-way shape memory spring 75 enables the air control pipe 7 to automatically adjust the air flow according to the temperature. When the temperature inside the composite motor increases, the gap of the two-way shape memory spring 75 also increases, increasing the amount of cooling air flow and improving the heat dissipation effect; when the temperature of the composite motor decreases, the gap of the two-way shape memory spring 75 also shrinks, reducing the amount of cooling air flow and maintaining the stable operation of the motor.

[0061] In the initial stage, the length of the two-way shape memory spring 75 is greater than or equal to the sum of the axial length of the mounting hole 73 and the diameter of the wind control channel 72 .

[0062] In fact, if Figure 3 The air control channel 72 and the two-way shape memory spring 75 are arranged perpendicular to each other. The purpose of such arrangement is to create a gap between the two. Therefore, even when the two-way shape memory spring 75 is in the minimum state (contraction tendency), the air control channel 72 will not be completely blocked, thereby ensuring that there is always cooling airflow passing through the air control channel 72 into the cooling channel 11.

[0063] It should also be noted that the two-way shape memory spring 75 is a standard part, which is easy to purchase and has a low cost, thereby reducing the manufacturing cost of the entire air control duct 7. In addition, the two-way shape memory spring 75 is easy to install, and only needs to fix one end of it in the installation hole 73. At the same time, the air control duct 7 is also easy to embed into the first side hole 15, which is convenient for installation and maintenance.

[0064] In this embodiment, the right end of the outer tube 1 is provided with an air collecting groove 6 for collecting cooling airflow for the cooling channel 11. When there is cooling airflow outside (such as cooling airflow provided by a forced ventilation system), the cooling airflow will be effectively captured by the air collecting groove 6 and guided to the entrance of the cooling channel 11.

[0065] The inner wall of the outer cylinder 1 is further provided with a second side hole 16 connected to the cooling channel 11 , and the second side hole 16 faces the air collecting groove 6 .

[0066] The cooling airflow in the cooling channel 11 can enter the interior of the outer cylinder 1 through the second side hole 16 , and then perform heat exchange inside the composite motor, and be discharged from the left end of the outer cylinder 1 after absorbing heat.

[0067] Since the second side hole 16 faces the air collecting slot 6, and its size and position can be calculated and adjusted in advance, it is ensured that only a small amount of cooling airflow can enter the outer cylinder 1 through the second side hole 16. This avoids direct blowing of the cooling airflow on the rotor 3, reduces vibration and noise caused by unstable airflow, and improves the overall reliability of the composite motor.

[0068] Although the amount of cooling air entering is limited, the airflow can still effectively exchange heat with the heat inside the composite motor through the cooling channel 11 and the special channel structure. This design not only maintains the heat dissipation efficiency, but also avoids the energy loss and increased flow resistance caused by excessive airflow. In addition, the direct impact of the airflow on the rotor 3 is reduced, the overall structure of the composite motor is more stable, and the service life of the composite motor is extended.

[0069] Furthermore, a wind plate 4 is fixed to a side of the air collecting slot 6 close to the outer cylinder 1 , and the wind plate 4 is embedded in the inner wall of the outer cylinder 1 . A plurality of slots 41 are formed on a side of the wind plate 4 close to the stator 2 .

[0070] An elastic porous pad 42 is embedded in the slot 41 .

[0071] The elastic porous pad 42 is embedded in the card slot 41. The material thereof has certain elasticity and air permeability. The hole design on the elastic porous pad 42 allows cooling airflow to pass through, and its elasticity can play a buffering role.

[0072] A clamping block 43 is fixed on a side of the elastic porous pad 42 facing the stator 2 , and an arc groove 44 is formed on a side of the clamping block 43 facing the stator 2 .

[0073] The arc-shaped groove 44 formed on the block 43 can further disperse and guide the cooling airflow, thereby reducing the direct impact of the airflow on the stator 2 and the rotor 3 .

[0074] The holes on the elastic porous pad 42 and the arc groove 44 on the block 43 work together to disperse and guide the cooling airflow collected in the air collecting groove 6, thereby avoiding the direct impact of the cooling airflow on the stator 2 and reducing the local overheating problem caused by concentrated airflow.

[0075] Furthermore, the elastic properties of the elastic porous pad 42 can absorb and buffer the impact and vibration caused by the cooling airflow.

[0076] In this embodiment, a plurality of air holes 45 are formed on the block 43 and are located on both sides of the arc-shaped groove 44 . The air holes 45 penetrate the block 43 .

[0077] The block 43 is also provided with a plurality of air holes 45, which are located on both sides of the arc groove 44 and penetrate the block 43. The air holes 45 allow the cooling airflow to be dispersed more evenly when passing through and discharged from another air hole 45, thereby achieving effective dispersion and buffering of the cooling airflow. Through the design of the slot 41, the elastic air hole pad 42, the block 43, the arc groove 44 and the air holes 45, the cooling airflow can be effectively dispersed and buffered when entering the interior of the composite motor.

[0078] This reduces the direct impact of the cooling airflow on the stator and other key components, improving the stability and reliability of the motor. The dispersed cooling airflow can more evenly cover the heat-generating components inside the motor, improving the heat dissipation efficiency. At the same time, due to the dispersion and buffering of the cooling airflow, it also reduces the energy loss and increased flow resistance caused by excessive airflow.

[0079] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A composite motor with integrated air cooling function, characterized in that: include: An outer cylinder (1) having a stator (2) fixed on its inner wall; A rotor (3) rotatably disposed inside the outer cylinder (1) and engaged with the stator (2); A baffle (5) fixed to the inner wall of the left end of the outer cylinder (1); Wherein, a plurality of cooling channels (11) distributed in a circumferential array are provided in the wall of the outer cylinder (1), and the cooling channels (11) penetrate the left and right ends of the outer cylinder (1); The cooling channel (11) also forms a contraction channel (12), a direct flow channel (13) and an expansion channel (14) from right to left in sequence; The inner wall of the outer cylinder (1) is also provided with a first side hole (15) connected to the direct current channel (13); The first side hole (15) is located on the left side of the stator (2); An air control tube (7) is also embedded in the first side hole (15), and the air control tube (7) adjusts its opening degree based on its own temperature.

2. The composite motor with integrated air cooling function according to claim 1, characterized in that: The air control duct (7) comprises: A tube body (71), wherein a wind control channel (72) is provided in the middle thereof and passes through the tube body (71); Mounting holes (73) and accommodating holes (74) are correspondingly provided on both sides of the air control flow channel (72); A two-way shape memory spring (75) has one end fixedly embedded in the mounting hole (73) and the other end capable of being accommodated in the accommodation hole (74).

3. The composite motor with integrated air cooling function according to claim 2, characterized in that: The two-way shape memory spring (75) has a contraction tendency under conditions below a first temperature, and has an extension tendency under conditions above a second temperature, wherein the second temperature is higher than the first temperature.

4. The composite motor with integrated air cooling function according to claim 2, characterized in that: In the initial stage, the length of the two-way shape memory spring (75) is greater than or equal to the sum of the axial length of the mounting hole (73) and the diameter of the wind control flow channel (72).

5. The composite motor with integrated air cooling function according to claim 1, characterized in that: The right end of the outer cylinder (1) is provided with an air collecting groove (6) for collecting cooling airflow for the cooling channel (11); The inner wall of the outer cylinder (1) is further provided with a second side hole (16) connected to the cooling channel (11), and the second side hole (16) faces the air collecting groove (6).

6. The composite motor with integrated air cooling function according to claim 5, characterized in that: A wind plate (4) is fixed to a side of the wind collecting slot (6) close to the outer cylinder (1); the wind plate (4) is embedded in the inner wall of the outer cylinder (1); and a plurality of slots (41) are provided on a side of the wind plate (4) close to the stator (2).

7. The composite motor with integrated air cooling function according to claim 6, characterized in that: An elastic porous pad (42) is embedded in the card slot (41).

8. The composite motor with integrated air cooling function according to claim 7, characterized in that: A clamping block (43) is fixed on the side of the elastic porous pad (42) facing the stator (2), and an arc-shaped groove (44) is formed on the side of the clamping block (43) facing the stator (2).

9. The composite motor with integrated air cooling function according to claim 8, characterized in that: The clamping block (43) is also provided with a plurality of air vents (45) located on both sides of the arc-shaped groove (44), and the air vents (45) penetrate the clamping block (43).

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