Self-cooling outer rotor EC motor

Abstract

The invention discloses a self-cooling type outer rotor EC motor, relates to the technical field of motors, and aims to solve the technical problems that the motor is easily in a high-temperature state for a long time and is difficult to self-cool under the condition of long-time working of the motor, the self-cooling type outer rotor EC motor comprises an outer rotor EC motor main body, and the outer rotor EC motor main body comprises an outer shell and a mounting seat; a transmission gear set is arranged at the output end of the outer rotor EC motor body, a spiral cooling channel is arranged in a shell layer of the outer shell, a barrel is integrally formed on the side wall of the outer shell, an inner cavity of the barrel communicates with an inner cavity of the spiral cooling channel, a circulating power assembly is arranged in the inner cavity of the barrel, and a cooling assembly is arranged on the top face of the mounting base. The cooling assembly comprises a cooling pipe communicated with the inner cavity of the barrel, and the output end of the cooling pipe is communicated with the inner cavity of the spiral cooling channel. The self-cooling motor has the advantage that continuous self-cooling operation can be realized by using the power of the motor during working.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and more particularly to a self-cooling outer rotor EC motor. Background Art

[0002] The outer rotor EC motor, also known as the brushless DC outer rotor motor, is a new type of motor whose rotor is located outside the stator. The electronic controller commutates the current in the motor winding to drive the motor to rotate.

[0003] The shell of the existing outer rotor EC motor is generally made of metal materials with good thermal conductivity, such as aluminum alloy, etc. Its large heat dissipation area can naturally dissipate the heat generated inside the motor to the surrounding environment, and the heat dissipation efficiency is improved by designing ribs or heat sinks on the surface of the shell to achieve a natural cooling effect; however, when the motor works for a long time, it will continuously generate heat inside, and it is difficult to dissipate the continuous heat only through the motor shell structure, which easily causes the motor to be in a high temperature state for a long time and is difficult to self-cool. In view of this, we propose a self-cooling outer rotor EC motor. Summary of the invention

[0004] The purpose of the present invention is to provide a self-cooling outer rotor EC motor to solve the technical problem that when the motor works for a long time, it is easy to cause the motor to be in a high temperature state for a long time and it is difficult to self-cool.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a self-cooling outer rotor EC motor, comprising an outer rotor EC motor body; wherein the outer rotor EC motor body comprises an outer shell and a mounting seat, and the outer shell is arranged on the top surface of the mounting seat; a transmission gear set is arranged at the output end of the outer rotor EC motor body; a spiral cooling channel is arranged in the shell layer of the outer shell, and a cylinder is integrally formed on the side wall of the outer shell, the inner cavity of the cylinder is connected to the inner cavity of the spiral cooling channel, and a circulating power component is arranged in the inner cavity of the cylinder; a cooling component is also arranged on the top surface of the mounting seat, and the cooling component comprises a cooling pipe connected to the inner cavity of the cylinder, and the output end of the cooling pipe is connected to the inner cavity of the spiral cooling channel, and the cooling component also comprises a blowing component, and the The blowing component cooperates with the circulating power component; the transmission gear set is used to transfer the kinetic energy generated by the operation of the outer rotor EC motor body to the circulating power component, so that the circulating power component transports the cooling oil in the inner cavity of the cylinder. The cooling oil flows into the inner cavity of the cooling pipe through the cylinder, flows into the inner cavity of the spiral cooling channel through the cooling pipe, and finally returns to the inner cavity of the cylinder, forming a circulating flow of cooling oil. Through the circulation of the cooling oil, the heat generated by the operation of the outer rotor EC motor body is absorbed and brought into the inner cavity of the cooling pipe. The circulating power component drives the blowing component to perform a blowing operation, accelerates the air flow, and takes away the heat on the cooling pipe, forming a continuous self-cooling temperature reduction operation for the outer rotor EC motor body.

[0006] Preferably, the transmission gear set includes a gear support plate and a protective cover plate connected to the top surface of the mounting seat, and the transmission gear set also includes gear 1 arranged at the output end of the outer rotor EC motor body, the output end of gear 1 is meshedly connected with gear 2, the output end of gear 2 is meshedly connected with gear 3, and gear 2 and gear 3 are rotatably arranged between the gear support plate and the protective cover plate.

[0007] Preferably, the spiral cooling channel is a channel with a spiral annular structure, one end of the spiral cooling channel is connected to an oil inlet pipe arranged on the side wall of the outer shell, the output end of the cooling pipe is detachably connected to the oil inlet pipe, and the inner cavity of the cooling pipe is connected to the inner cavity of the spiral cooling channel through the oil inlet pipe.

[0008] Preferably, the inner cavity of the cylinder is a cylindrical structure, and the side wall of the inner cavity of the cylinder is provided with an oil inlet channel connected to the other end of the spiral cooling channel, and the outer wall of the cylinder is arranged with an oil outlet pipe connected to the inner cavity of the cylinder, the input end of the cooling pipe is detachably connected to the oil outlet pipe, and the inner cavity of the cooling pipe is connected to the inner cavity of the cylinder through the oil outlet pipe.

[0009] Preferably, the circulating power assembly includes a first rotating rod rotatably arranged in the inner cavity of the cylinder, one end of the first rotating rod passes through the side wall of the cylinder and the side wall of the gear support plate and is connected to the gear three; a plurality of spiral plates are connected to the circumferential side wall of the first rotating rod, there are two spiral plates, two of the spiral plates are arranged in the inner cavity of the cylinder, the spiral plate is a spiral plate structure, and the spiral directions of the two spiral plates are consistent.

[0010] Preferably, a plurality of stirring rods connected to the circumferential outer wall of the first rotating rod are arranged between the two spiral plates, the plurality of stirring rods are distributed in a spiral shape, the stirring rods are rod bodies with a columnar structure, and the side walls of the stirring rods are configured as an arc surface structure.

[0011] Preferably, the cooling assembly also includes a supporting side plate connected to the top surface of the mounting seat, the side walls of the supporting side plate are connected to a plurality of cooling fins and a top plate, the top plate is arranged above the cooling fins, and the top plate and the mounting seat are connected via a fixed column; wherein the plurality of cooling fins are arranged in an array with equal spacing, and the cooling pipe penetrates through the side walls of the plurality of cooling fins in a reciprocating spiral shape.

[0012] Preferably, the top plate is provided with a plurality of square slots from top to bottom, and the blowing assembly is arranged in the square slots.

[0013] Preferably, the blowing assembly includes a fan frame, the outer wall of the fan frame is connected to the inner wall of the square slot, the fan frame is connected to a fixed seat via a connecting rod, the top surface of the fixed seat is rotatably connected to fan blades via a rotating shaft, a protective frame is arranged on the top surface of the fan frame, and the fan blades are arranged between the fan frame and the protective frame.

[0014] Preferably, the top surface of the fan blade is connected with a transmission column, and the top of the transmission column is connected with a bevel gear four; Two symmetrically distributed fixed blocks are connected to the top surface of the top plate, a second rotating rod is rotatably arranged between the two fixed blocks, a plurality of bevel gears five meshing with the bevel gear four are connected to the circumferential outer wall of the second rotating rod, one end of the second rotating rod passes through the side wall of the fixed block and is connected to sprocket one, the sprocket one is connected to sprocket two through chain transmission, and the sprocket two is arranged on the circumferential outer wall of the first rotating rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention transmits the kinetic energy generated by the operation of the outer rotor EC motor body to the circulating power component by utilizing the transmission gear set, and the circulating power component drives the blowing component coordinated therewith to perform the blowing operation, and the circulating power component generates a transmission force on the cooling oil in the inner cavity of the cylinder body, so that the cooling oil flows into the inner cavity of the cooling pipe through the cylinder body, flows into the inner cavity of the spiral cooling channel through the cooling pipe, and finally returns to the inner cavity of the cylinder body, thereby forming a circulating flow of the cooling oil. Through the circulation of the cooling oil, the heat generated by the operation of the outer rotor EC motor body is absorbed and brought into the inner cavity of the cooling pipe. Through the blowing operation of the blowing component, the air flow is accelerated, and the heat on the cooling pipe is taken away, thereby forming a continuous self-cooling temperature reduction operation of the outer rotor EC motor body. The self-cooling operation is realized by utilizing the power of the motor itself when it is working, so that the motor can maintain a continuous self-cooling operation under the condition of long-term operation, thereby solving the problem that the motor is easily caused to be in a high temperature state for a long time and is difficult to self-cool under the condition of long-term operation.

[0016] 2. The present invention enters a working state through an outer rotor EC motor body, and gear 1 at its output end rotates. Gear 1 drives gear 3 to rotate through gear 2, and gear 3 drives the first rotating rod to rotate. The first rotating rod drives two spiral plates arranged in the inner cavity of the cylinder to rotate. By designing the spiral plate as a spiral plate-like structure, the centrifugal force generated by the rotation of the spiral plate pushes the cooling oil in the inner cavity of the cylinder to move forward. During the forward movement of the cooling oil, the spiral plate causes a disturbance to the cooling oil, destroying its original laminar state, making it easier to form turbulent flow. In the turbulent state, particles of the cooling oil mix with each other and collide violently, and the heat transfer efficiency is higher, thereby enhancing the ability of the cooling oil to remove heat from the motor, and further improving the cooling effect of the cooling oil on the motor.

[0017] 3. The present invention also drives multiple stirring rods to rotate by the first rotating rod during the process of the cooling oil moving forward in the inner cavity of the cylinder. By designing the multiple stirring rods to be spirally distributed, the multiple stirring rods can be more consistent with the flow trend of the cooling oil pushed by the spiral plate when rotating, and form a stirring effect on the cooling oil. By setting the side wall of the stirring rod to an arc surface structure, the resistance of the stirring rod to the cooling oil can be reduced, and the stirring effect of the stirring rod on the cooling oil can be improved, so that the mixing state of the cooling oil itself is better, which not only avoids the accumulation of sediment that easily blocks the pipeline, but also further enhances the heat transfer capacity of the cooling oil, thereby improving the cooling effect of the cooling oil on the motor.

[0018] 4. The present invention transfers the kinetic energy generated by the operation of the outer rotor EC motor body to the circulating power component by designing a transmission gear set, so that when the outer rotor EC motor body runs at a high speed, it drives the first rotating rod to rotate at a high speed, further accelerating the rotation speed of the spiral plate, thereby accelerating the circulation flow speed of the cooling oil, improving the heat exchange efficiency between the cooling oil and the spiral cooling channel, and enabling the cooling oil to more quickly absorb and take away the heat generated by the outer rotor EC motor body, thereby effectively reducing the temperature of the outer rotor EC motor body and ensuring its stability in operation under high speed mode.

[0019] 5. The present invention drives sprocket two to rotate by rotating the first rotating rod, sprocket two drives sprocket one to rotate through the chain, sprocket one drives the second rotating rod to rotate, the second rotating rod drives three bevel gears five to rotate, bevel gear five drives bevel gear four to rotate, bevel gear four drives fan blades to rotate on the fixed seat through the transmission column, the rotation of the fan blades generates wind force, accelerates the speed of air flow between multiple heat dissipation fins, further takes away the heat on the cooling pipe, makes the cooling oil become a low-temperature state, ensures the low-temperature state of the cooling oil itself during the circulation process, maintains the heat exchange capacity of the cooling oil, and enables the cooling oil to continuously take away the heat in the spiral cooling channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cutaway structure of the outer shell and the cylinder of the present invention; Figure 3 It is a schematic diagram of the disassembly of the transmission gear set structure of the present invention; Figure 4 This is a schematic diagram of the split structure of the outer shell of the present invention; Figure 5 It is a schematic diagram of the structure of the outer shell and the cylinder body cut at another angle of the present invention; Figure 6 It is a schematic diagram of the structure of the circulating power assembly of the present invention; Figure 7 for Figure 6 The enlarged structural diagram at A in the middle; Figure 8 It is a schematic diagram of the cooling assembly structure of the present invention; Fig. 9 It is a schematic diagram of the bottom structure of the blowing assembly of the present invention; Fig.10 It is a schematic diagram of the top structure of the blowing assembly of the present invention; Fig.11 for Figure 3 Enlarged structural diagram at B in the middle.

[0021] Description of the numbers in the figure: 1. External rotor EC motor body; 2. External housing; 3. Mounting seat; 4. Transmission gear set; 5. Spiral cooling channel; 6. Cylinder; 7. Circulation power assembly; 8. Cooling assembly; 401, gear support plate; 402, protective cover plate; 403, gear one; 404, gear two; 405, gear three; 501, oil inlet pipe; 601, oil inlet channel; 602, oil outlet pipe; 701, first rotating rod; 702, spiral plate; 703, stirring rod; 81. cooling pipe; 82. blowing assembly; 83. supporting side plate; 84. cooling fins; 85. top plate; 86. fixing column; 8201, fan frame; 8202, connecting rod; 8203, fixed seat; 8204, protective frame; 8205, fan blades; 8206, transmission column; 8207, bevel gear four; 8208, second rotating rod; 8209, bevel gear five; 8210, sprocket one; 8211, chain; 8212, sprocket two; 8501, fixed block. DETAILED DESCRIPTION

[0022] like Figures 1 to 11 As shown, the present invention relates to a self-cooling outer rotor EC motor, comprising an outer rotor EC motor body 1; wherein, the outer rotor EC motor body 1 comprises an outer shell 2 and a mounting seat 3, and the outer shell 2 is arranged on the top surface of the mounting seat 3; a transmission gear set 4 is arranged at the output end of the outer rotor EC motor body 1; a spiral cooling channel 5 is arranged in the shell layer of the outer shell 2, and a cylinder 6 is integrally formed on the side wall of the outer shell 2, the inner cavity of the cylinder 6 is connected to the inner cavity of the spiral cooling channel 5, and a circulating power component 7 is arranged in the inner cavity of the cylinder 6; a cooling component 8 is also arranged on the top surface of the mounting seat 3, and the cooling component 8 comprises a cooling pipe 81 connected to the inner cavity of the cylinder 6, and the output end of the cooling pipe 81 is connected to the inner cavity of the spiral cooling channel 5, and the cooling component 8 also comprises a blowing component 82, and the blowing component 82 cooperates with the circulating power component 7.

[0023] In the embodiment of the present invention, the transmission gear set 4 is used to transfer the kinetic energy generated by the operation of the outer rotor EC motor body 1 to the circulating power component 7, so that the circulating power component 7 transports the cooling oil in the inner cavity of the cylinder 6, and the cooling oil flows into the inner cavity of the cooling pipe 81 through the cylinder 6, flows into the inner cavity of the spiral cooling channel 5 through the cooling pipe 81, and finally returns to the inner cavity of the cylinder 6, forming a circulating flow of the cooling oil. Through the circulation of the cooling oil, the heat generated by the operation of the outer rotor EC motor body 1 is absorbed and brought into the inner cavity of the cooling pipe 81. The circulating power component 7 drives the blowing component 82 to perform a blowing operation, accelerates the air flow, and takes away the heat on the cooling pipe 81, forming a continuous self-cooling temperature reduction operation of the outer rotor EC motor body 1; by utilizing the power of the motor itself when it is working to achieve self-cooling operation, the motor can maintain continuous self-cooling operation under long-term working conditions, which solves the problem that the motor is easily kept in a high temperature state for a long time and is difficult to self-cool when it is working for a long time.

[0024] In an embodiment of the present invention, the transmission gear set 4 includes a gear support plate 401 and a protective cover plate 402 connected to the top surface of the mounting seat 3, and the transmission gear set 4 also includes a gear 1 403 arranged at the output end of the outer rotor EC motor body 1, the output end of the gear 1 403 is meshedly connected with a gear 2 404, the output end of the gear 2 404 is meshedly connected with a gear 3 405, and the gear 2 404 and the gear 3 405 are rotatably arranged between the gear support plate 401 and the protective cover plate 402.

[0025] As another embodiment of the present invention, the circulating power assembly 7 includes a first rotating rod 701 rotatably arranged in the inner cavity of the cylinder 6, one end of the first rotating rod 701 penetrates the side wall of the cylinder 6 and the side wall of the gear support plate 401 and is connected to the gear three 405; the circumferential side wall of the first rotating rod 701 is connected to a plurality of spiral plates 702, there are two spiral plates 702, the two spiral plates 702 are arranged in the inner cavity of the cylinder 6, the spiral plates 702 are spiral plate structures, and the spiral directions of the two spiral plates 702 are consistent; the present invention enters the working state through the outer rotor EC motor body 1, and the gear one 403 at its output end rotates, and the gear one 403 drives the gear three 405 to rotate through the gear two 404 , the gear three 405 drives the first rotating rod 701 to rotate, and the first rotating rod 701 drives the two spiral plates 702 arranged in the inner cavity of the cylinder 6 to rotate. By designing the spiral plate 702 as a spiral plate structure, the centrifugal force generated by the rotation of the spiral plate 702 pushes the cooling oil in the inner cavity of the cylinder 6 to move forward. During the forward movement of the cooling oil, the spiral plate 702 causes the cooling oil to be disturbed, destroying its original laminar state, making it easier to form turbulent flow. In the turbulent state, the particles of the cooling oil mix with each other and collide violently, and the heat transfer efficiency is higher, thereby improving the ability of the cooling oil to remove the heat from the motor, and further improving the cooling effect of the cooling oil on the motor; Furthermore, by designing the transmission gear set 4, the kinetic energy generated by the outer rotor EC motor body 1 is transmitted to the circulating power component 7, so that when the outer rotor EC motor body 1 runs at a high speed, it drives the first rotating rod 701 to rotate at a high speed, further accelerating the rotation speed of the spiral plate 702, thereby accelerating the circulation flow speed of the cooling oil, and improving the heat exchange efficiency between the cooling oil and the spiral cooling channel 5, so that the cooling oil can absorb and take away the heat generated by the outer rotor EC motor body 1 more quickly, thereby effectively reducing the temperature of the outer rotor EC motor body 1 and ensuring its stability in operation under the high speed mode.

[0026] As another embodiment of the present invention, a plurality of stirring rods 703 connected to the circumferential outer wall of the first rotating rod 701 are arranged between the two spiral plates 702, and the plurality of stirring rods 703 are distributed in a spiral shape, and the stirring rod 703 is a rod body of a columnar structure, and the side wall of the stirring rod 703 is set as a circular arc surface structure; in the present invention, during the process of the cooling oil moving forward in the inner cavity of the cylinder 6, the first rotating rod 701 drives the plurality of stirring rods 703 to rotate, and by designing the plurality of stirring rods 703 to be distributed in a spiral shape, the plurality of stirring rods 703 can better fit the flow trend of the cooling oil pushed by the spiral plate 702 when rotating, and form a stirring effect on the cooling oil, and by setting the side wall of the stirring rod 703 to be a circular arc surface structure, the resistance of the stirring rod 703 to contact with the cooling oil can be reduced, and the stirring effect of the stirring rod 703 on the cooling oil can be improved, so that the mixing state of the cooling oil itself is better, and the accumulation of sediments can be avoided to easily block the pipeline, and the heat transfer capacity of the cooling oil is further enhanced, thereby improving the cooling effect of the cooling oil on the motor.

[0027] As another embodiment of the present invention, the spiral cooling channel 5 is a channel of a spiral annular structure, one end of the spiral cooling channel 5 is connected to an oil inlet pipe 501 arranged on the side wall of the outer shell 2, the output end of the cooling pipe 81 is detachably connected to the oil inlet pipe 501, and the cooling pipe 81 and the oil inlet pipe 501 are detachably connected by setting a joint with an external thread and a joint with an internal thread that fit each other to achieve a detachable connection effect, and the inner cavity of the cooling pipe 81 is connected to the inner cavity of the spiral cooling channel 5 through the oil inlet pipe 501; the inner cavity of the cylinder 6 is a cylindrical structure, and the side wall of the inner cavity of the cylinder 6 is provided with an oil inlet channel 601 connected to the other end of the spiral cooling channel 5, and the outer wall of the cylinder 6 is arranged with a 6, the input end of the cooling pipe 81 is detachably connected to the oil outlet pipe 602, the inner cavity of the cooling pipe 81 is connected to the inner cavity of the cylinder 6 through the oil outlet pipe 602, the inner cavity of the cooling pipe 81 is connected to the inner cavity of the spiral cooling channel 5 through the inner cavity of the cooling pipe 81, the inner cavity of the spiral cooling channel 5 is connected to the inner cavity of the cylinder 6, and the inner cavity of the cylinder 6 is connected to the inner cavity of the cooling pipe 81, thereby realizing the circulation channel function of the cooling oil, and by designing the output end of the cooling pipe 81 and the oil inlet pipe 501 to be detachably connected, and the input end of the cooling pipe 81 and the oil outlet pipe 602 to be detachably connected, it is convenient to tilt or replace the cooling oil in the circulation channel, thereby maintaining a good self-cooling effect.

[0028] As another embodiment of the present invention, the cooling assembly 8 also includes a supporting side plate 83 connected to the top surface of the mounting seat 3, and the side wall of the supporting side plate 83 is connected with a plurality of heat dissipation fins 84 and a top plate 85, and the top plate 85 is arranged above the heat dissipation fins 84, and the top plate 85 is connected to the mounting seat 3 through two fixing columns 86; wherein, the plurality of heat dissipation fins 84 are arranged in an array with equal spacing, and the cooling pipe 81 is reciprocating and spirally penetrating through the side walls of the plurality of heat dissipation fins 84; the top plate 85 is provided with three square slots from top to bottom, and the blowing assembly 82 has three, and the three blowing assemblies 82 are respectively arranged in the square slots; the blowing assembly 82 includes The fan frame 8201 is enclosed, and the outer wall of the fan frame 8201 is connected to the inner wall of the square slot hole. The fan frame 8201 is connected to the fixed seat 8203 through a connecting rod 8202. The top surface of the fixed seat 8203 is rotatably connected to the fan blade 8205 through a rotating shaft. A protective frame 8204 is arranged on the top surface of the fan frame 8201, and the fan blade 8205 is arranged between the fan frame 8201 and the protective frame 8204; the top surface of the fan blade 8205 is connected to a transmission column 8206, and the top of the transmission column 8206 is connected to a bevel gear 8207; the top surface of the top plate 85 is connected to two symmetrically distributed fixed blocks 8501, and the two fixed blocks 8501 are rotatably connected to each other. The second rotating rod 8208 is dynamically arranged, and the outer wall of the second rotating rod 8208 is connected with three bevel gears 5 8209 meshing with bevel gears 4 8207. One end of the second rotating rod 8208 passes through the side wall of the fixed block 8501 and is connected with a sprocket 1 8210. The sprocket 1 8210 is connected with a sprocket 2 8212 through a chain 8211. The sprocket 2 8212 is arranged on the outer wall of the first rotating rod 701. The present invention drives the sprocket 2 8212 to rotate by rotating the first rotating rod 701, and the sprocket 2 8212 drives the sprocket 1 8210 to rotate through the chain 8211. The sprocket 1 821 0 drives the second rotating rod 8208 to rotate, the second rotating rod 8208 drives three bevel gears 5 8209 to rotate, the bevel gears 5 8209 drive the bevel gear 4 8207 to rotate, and the bevel gear 4 8207 drives the fan blade 8205 to rotate on the fixed seat 8203 through the transmission column 8206. The rotation of the fan blade 8205 generates wind force, which accelerates the speed of air flow between the multiple heat dissipation fins 84, further takes away the heat on the cooling pipe 81, makes the cooling oil become a low-temperature state, ensures the heat exchange capacity in the cooling oil circulation process, and enables the cooling oil to continuously take away the heat in the spiral cooling channel 5.

[0029] Working principle: This embodiment provides a self-cooling outer rotor EC motor. When in use, the outer rotor EC motor body 1 enters the working state, and the gear 1 403 at the output end thereof rotates. The gear 1 403 drives the gear 3 405 to rotate through the gear 2 404, and the gear 3 405 drives the first rotating rod 701 to rotate. On the one hand, the first rotating rod 701 drives the two spiral plates 702 and a plurality of stirring rods 703 arranged in the inner cavity of the cylinder 6 to rotate. The centrifugal force generated by the rotation of the spiral plates 702 pushes the cooling oil in the inner cavity of the cylinder 6 to move forward. During the forward movement of the cooling oil, the spiral plates 702 cause the cooling oil to be disturbed, thereby destroying its original laminar state and making it easier to form turbulent flow. In the turbulent state, the particles of the cooling oil mix with each other and collide violently, and the heat transfer efficiency is higher, thereby improving the ability of the cooling oil to remove the heat from the motor. In addition, during the forward movement of the cooling oil, the plurality of stirring rods 703 cause the mixing state of the cooling oil itself to be better, thereby preventing the accumulation of sediments from easily clogging the pipeline, and further enhancing the heat transfer ability of the cooling oil. The oil outlet pipe 602 flows into the cooling pipe 81. At the same time, the first rotating rod 701 rotates to drive the second sprocket 8212 to rotate. The second sprocket 8212 drives the first sprocket 8210 to rotate through the chain 8211. The first sprocket 8210 drives the second rotating rod 8208 to rotate. The second rotating rod 8208 drives the three bevel gears 5 8209 to rotate. The bevel gear 5 8209 drives the bevel gear 4 8207 to rotate. The bevel gear 4 8207 drives the fan blade 8205 to rotate on the fixed seat 8203 through the transmission column 8206. The rotation of the fan blade 8205 produces The wind force is generated to accelerate the speed of air flow between the multiple cooling fins 84, further taking away the heat on the cooling pipe 81, making the cooling oil become a low-temperature state. The low-temperature cooling oil enters the spiral cooling channel 5 through the oil inlet pipe 501 in the cooling pipe 81, and moves to the inner cavity of the cylinder 6 through the oil inlet channel 601 in the spiral cooling channel 5. The low-temperature cooling oil takes away the heat in the spiral cooling channel 5, enters the cooling pipe 81 through the cylinder 6 to dissipate heat, forming a cycle, and continuously cooling the outer rotor EC motor body 1.

[0030] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A self-cooling outer rotor EC motor, characterized in that: include: External rotor EC motor body (1); The outer rotor EC motor body (1) comprises an outer shell (2) and a mounting seat (3), wherein the outer shell (2) is arranged on the top surface of the mounting seat (3); A transmission gear set (4) is arranged at the output end of the outer rotor EC motor body (1); A spiral cooling channel (5) is arranged in the shell layer of the outer shell (2); a cylinder (6) is integrally formed on the side wall of the outer shell (2); the inner cavity of the cylinder (6) is connected to the inner cavity of the spiral cooling channel (5); and a circulating power component (7) is arranged in the inner cavity of the cylinder (6); A cooling assembly (8) is also arranged on the top surface of the mounting seat (3), the cooling assembly (8) comprising a cooling pipe (81) connected to the inner cavity of the barrel (6), the output end of the cooling pipe (81) being connected to the inner cavity of the spiral cooling channel (5), the cooling assembly (8) further comprising a blowing assembly (82), the blowing assembly (82) being in linkage with the circulating power assembly (7).

2. A self-cooling outer rotor EC motor according to claim 1, characterized in that: The transmission gear set (4) comprises a gear support plate (401) and a protective cover plate (402) connected to the top surface of the mounting seat (3); the transmission gear set (4) further comprises a gear 1 (403) arranged at the output end of the outer rotor EC motor body (1); the output end of the gear 1 (403) is meshingly connected to a gear 2 (404); the output end of the gear 2 (404) is meshingly connected to a gear 3 (405); the gear 2 (404) and the gear 3 (405) are rotatably arranged between the gear support plate (401) and the protective cover plate (402).

3. A self-cooling outer rotor EC motor according to claim 2, characterized in that: The spiral cooling channel (5) is a channel with a spiral annular structure. One end of the spiral cooling channel (5) is connected to an oil inlet pipe (501) arranged on the side wall of the outer shell (2). The output end of the cooling pipe (81) is detachably connected to the oil inlet pipe (501). The inner cavity of the cooling pipe (81) is connected to the inner cavity of the spiral cooling channel (5) through the oil inlet pipe (501).

4. A self-cooling outer rotor EC motor according to claim 3, characterized in that: The inner cavity of the cylinder (6) is a cylindrical structure; the inner cavity side wall of the cylinder (6) is provided with an oil inlet channel (601) connected to the other end of the spiral cooling channel (5); the outer wall of the cylinder (6) is provided with an oil outlet pipe (602) connected to the inner cavity of the cylinder (6); the input end of the cooling pipe (81) is detachably connected to the oil outlet pipe (602); the inner cavity of the cooling pipe (81) is connected to the inner cavity of the cylinder (6) via the oil outlet pipe (602).

5. A self-cooling outer rotor EC motor according to claim 4, characterized in that: The circulating power assembly (7) comprises a first rotating rod (701) rotatably arranged in the inner cavity of the cylinder (6), one end of the first rotating rod (701) penetrates the side wall of the cylinder (6) and the side wall of the gear support plate (401) and is connected to the gear three (405); The circumferential side wall of the first rotating rod (701) is connected to a plurality of spiral plates (702), wherein there are two spiral plates (702) arranged in the inner cavity of the cylinder (6), and the spiral plates (702) are spiral plate structures, and the spiral directions of the two spiral plates (702) are consistent.

6. A self-cooling outer rotor EC motor according to claim 5, characterized in that: A plurality of stirring rods (703) connected to the circumferential outer wall of the first rotating rod (701) are arranged between the two spiral plates (702); the plurality of stirring rods (703) are distributed in a spiral shape; the stirring rods (703) are rod bodies with a columnar structure; and the side walls of the stirring rods (703) are configured as arc surface structures.

7. A self-cooling outer rotor EC motor according to claim 6, characterized in that: The cooling assembly (8) further comprises a supporting side plate (83) connected to the top surface of the mounting seat (3), the side wall of the supporting side plate (83) being connected to a plurality of heat dissipation fins (84) and a top plate (85), the top plate (85) being arranged above the heat dissipation fins (84), and the top plate (85) being connected to the mounting seat (3) via a fixing column (86); The plurality of heat dissipation fins (84) are arranged in an array with equal spacing, and the cooling pipe (81) penetrates the side walls of the plurality of heat dissipation fins (84) in a reciprocating spiral shape.

8. A self-cooling outer rotor EC motor according to claim 7, characterized in that: The top plate (85) is provided with a plurality of square slots from top to bottom, and the blowing assembly (82) is arranged in the square slots.

9. A self-cooling outer rotor EC motor according to claim 8, characterized in that: The blowing assembly (82) comprises a fan frame (8201), the outer wall of the fan frame (8201) is connected to the inner wall of the square slot hole, the fan frame (8201) is connected to a fixing seat (8203) via a connecting rod (8202), the top surface of the fixing seat (8203) is rotatably connected to a fan blade (8205) via a rotating shaft, a protective frame (8204) is arranged on the top surface of the fan frame (8201), and the fan blade (8205) is arranged between the fan frame (8201) and the protective frame (8204).

10. A self-cooling outer rotor EC motor according to claim 9, characterized in that: The top surface of the fan blade (8205) is connected to a transmission column (8206), and the top of the transmission column (8206) is connected to a bevel gear four (8207); The top surface of the top plate (85) is connected to two symmetrically distributed fixed blocks (8501), a second rotating rod (8208) is rotatably arranged between the two fixed blocks (8501), a plurality of bevel gears (8209) meshingly connected to bevel gears (8207) are connected to the circumferential outer wall of the second rotating rod (8208), one end of the second rotating rod (8208) passes through the side wall of the fixed block (8501) and is connected to sprocket wheel one (8210), the sprocket wheel one (8210) is connected to sprocket wheel two (8212) via a chain (8211), and the sprocket wheel two (8212) is arranged on the circumferential outer wall of the first rotating rod (701).

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