Radiating device based on linear motor

Abstract

The invention discloses a heat dissipation device based on a linear motor, and relates to the field of motor heat dissipation, the heat dissipation device comprises the linear motor (1), a water cooling plate assembly (2) and a mover seat (3), the linear motor (1) is provided with a plurality of groups of stators (12), the upper surfaces of the stators (12) are slidably provided with movers (13) matched with the stators (12), the movers (13) are connected with iron cores (14), and coil windings (15) are wound on the iron cores (14); the water-cooling plate assembly (2) is fixed between the rotor seat and the iron core (14) through screws, heat generated when the linear motor (1) moves is transmitted to the water-cooling plate assembly (2) through the iron core (14), the water-cooling plate assembly (2) promotes water flow to flow in a plate through an internal copper pipe, flow in the flow-dividing pipelines is uniform through the flow-dividing pipelines with different pipe diameters, and the flow-dividing efficiency is improved. In addition, the copper pipe in the plate can achieve certain space coverage, heat generated by the iron core (14) is taken away, and uniform and efficient heat dissipation is achieved.

Description

Technical Field

[0001] The present invention belongs to a heat dissipation device for a motor, and in particular, the present invention relates to a heat dissipation device based on a linear motor. Background Art

[0002] During the operation of the high-speed direct-drive feed system, the heat generated by the system includes heat generated by the rotor winding and heat generated by friction machinery, among which the winding is the main heat source. The high temperature generated by the winding part of the flat-type iron core linear motor is transmitted upward through the iron core, resulting in a high temperature in the rotor area of ​​the linear motor, which cannot be effectively dissipated. Its temperature directly affects the linear motor itself and nearby sensitive components such as grating scales, thereby affecting the operating efficiency and accuracy of the linear motor. At present, the heat dissipation solution for flat-type linear motors with iron cores is mainly to add cooling fins and add pipes to the iron core holes. However, the manufacturing cost of cooling fins is high and the heat dissipation efficiency is low. The solution of adding pipes by opening holes in the iron core is difficult to manufacture, expensive, and difficult to maintain.

[0003] Chinese Patent: CN219833931U discloses a heat pipe-based linear motor heat dissipation structure, which relates to the field of motor heat dissipation technology, including a stator and a mover that cooperate with each other, the mover is slidably arranged on the stator, and also includes: a motor silicon steel sheet, the bottom of the motor silicon steel sheet is connected to an iron core, the iron core is wound with a coil winding, the upper part of the motor silicon steel sheet is provided with a groove, a plurality of alternately arranged heat pipes are embedded in the groove, the groove and the heat pipe are filled with a thermal interface material, and the top surface of the motor silicon steel sheet is provided with a heat dissipation fin, wherein one end of the alternately arranged heat pipe contacts the iron core for heat transfer, and the other end contacts the heat dissipation fin for heat transfer. This patent can improve the heat dissipation efficiency of the linear motor, average heat distribution, and improve the operating efficiency of the linear motor, but the production cost of the heat dissipation fin is high and the heat dissipation efficiency is low. Summary of the invention

[0004] The present invention aims to provide a heat dissipation device for a linear motor which has a simple structure, low cost, and is easy to maintain and can effectively and evenly dissipate heat from a rotor of the linear motor, thereby improving the accuracy and efficiency of the linear motor during operation.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A heat dissipation device based on a linear motor comprises a motor base, a stator is arranged on the motor base, a mover matched with the stator is arranged on the upper surface of the stator, and a water cooling plate assembly is arranged between the mover and the stator.

[0007] The mover is provided with a mover seat, the mover seat is provided with a mounting groove, and a water cooling plate assembly is arranged in the mounting groove.

[0008] The mover is installed in the installation groove of the mover seat, and the mover is connected to the iron core; the water cooling plate assembly is arranged on the surface of the iron core; and the water cooling assembly is connected to the iron core.

[0009] The water-cooling plate assembly includes a first water-cooling plate, a second water-cooling plate and a water-cooling pipe; the first water-cooling plate and the second water-cooling plate are provided with grooves inside, the water-cooling pipe is arranged in the grooves, and the first water-cooling plate and the second water-cooling plate are connected.

[0010] There is surface contact between the first water-cooling plate and the water-cooling pipe, there is surface contact between the water-cooling pipe and the second water-cooling plate, and there is surface contact between the first water-cooling plate and the second water-cooling plate; a high thermal conductivity epoxy resin layer is provided between the first water-cooling plate and the second water-cooling plate.

[0011] A water inlet pipe is provided on one side of the water-cooling pipe, and a water outlet pipe is provided on the other side of the water-cooling pipe. A diversion pipe is provided between the water inlet pipe and the water outlet pipe, and the diversion pipe includes a first diversion pipe, a second diversion pipe, a third diversion pipe, a fourth diversion pipe and a fifth diversion pipe; one end of the first diversion pipe, the second diversion pipe, the third diversion pipe, the fourth diversion pipe and the fifth diversion pipe is connected to the water inlet pipe; the other ends of the first diversion pipe, the second diversion pipe, the third diversion pipe, the fourth diversion pipe and the fifth diversion pipe are connected to the water outlet pipe.

[0012] The first shunt pipe, the second shunt pipe, the third shunt pipe, the fourth shunt pipe and the fifth shunt pipe are arranged in parallel in sequence, and the pipe diameters of the first shunt pipe, the second shunt pipe, the third shunt pipe, the fourth shunt pipe and the fifth shunt pipe increase step by step.

[0013] The motor base is provided with guide rails, and the guide rails are located at both sides of the stator; buffers are provided at both ends of the guide rails; the buffers include a buffer base and a rubber block; and a sliding block is provided on the guide rails.

[0014] Both ends of the water cooling pipe are respectively connected with quick-connect joints; the water cooling pipe is a copper-based pipe.

[0015] A countersunk hole is formed on the upper surface of the mover seat, a through hole is formed on the water cooling assembly, a positioning pin is provided on the first water cooling plate, and a positioning hole is formed on the second water cooling plate, and the positioning hole and the positioning pin are interference fit.

[0016] The technical effects of the present invention are:

[0017] 1. Compared with other forms of heat dissipation devices, this device has the advantages of high flexibility and high heat dissipation efficiency. By adding a water-cooling plate between the mover core and the mover seat, there is no need to open a channel, and the water-cooling plate is directly placed. It is fixedly connected through the middle through hole of the water-cooling plate. A groove is opened in the pipeline, and a pipeline is laid in the groove, so that water flows in the pipeline. The pipeline achieves a certain space coverage rate in the water-cooling plate, so it can effectively improve the heat dissipation performance of the linear motor.

[0018] 2. Compared with other heat dissipation water cooling pipes, the arrangement of the water cooling pipes in this device has the advantage of similar front and rear heat dissipation efficiency. Water flows into the pipe through the water inlet and is diverted to diversion pipes of different diameters. The farther from the water inlet, the larger the pipe diameter. This can achieve a balanced and stable heat dissipation effect of the water cooling plate, avoid partial heat absorption saturation, and improve heat dissipation efficiency.

[0019] 3. The water-cooling pipes in this device are based on copper-based pipes, and water flow is transmitted in the form of buried pipes, which improves the heat dissipation efficiency. The aluminum material of the water-cooling plate itself can also be used as the pipe material, or the groove in the water-cooling plate can be used as the water flow transmission channel. High-temperature resistant and high-thermal conductivity epoxy resin is used in the middle to paste or serve as a filling material, so that the first water-cooling plate, the water-cooling pipe, and the second water-cooling plate are in surface contact, which increases the heat transfer efficiency and ensures the heat absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] This specification includes the following drawings, which show the following contents:

[0021] Figure 1 The figure is a schematic diagram of the overall structure of a heat dissipation device based on a linear motor.

[0022] Figure 2 for Figure 1 Schematic diagram of the structure of the water cooling plate assembly is shown.

[0023] Figure 3 for Figure 1 Schematic diagram of the water-cooling pipeline structure.

[0024] Figure 4 for Figure 1 The middle is a schematic diagram of the structure of the first water cooling plate.

[0025] Figure 5 for Figure 1 Schematic diagram of the structure of the second water cooling plate.

[0026] Figure 6 for Figure 1 Schematic diagram of the structure of the middle mover seat.

[0027] Figure 7 for Figure 1 Schematic diagram of the structure of the medium quick connector.

[0028] Figure 8 for Figure 1 Schematic diagram of the structure of a medium-flat linear motor.

[0029] The markings in the figure are: 1. linear motor; 2. water-cooling plate assembly; 3. mover seat; 4. buffer base; 5 rubber block; 11. marble motor base; 12. stator; 13. mover; 14. iron core; 15. coil winding; 16. guide rail; 17. slider; 18. buffer; 21. first water-cooling plate; 22. second water-cooling plate; 23. water-cooling pipe; 24. quick-connect connector; 25. positioning pin; 26. positioning hole; 27. through hole; 28. high-conductivity epoxy resin layer; 29. ​​water inlet pipe; 31. countersunk hole; 210. water outlet pipe; 211. first shunt pipe; 212. second shunt pipe; 213. third shunt pipe; 215. fourth shunt pipe; 215. fifth shunt pipe; 216. groove. DETAILED DESCRIPTION

[0030] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0031] A heat dissipation device based on a linear motor includes a motor base 11, a stator 12 is arranged on the motor base 11, a mover 13 matching with the stator 12 is arranged on the upper surface of the stator 12, and a water cooling plate assembly 2 is arranged between the mover 13 and the stator 12. Figure 1 and Figure 8 As shown, the mover 13 is connected to an iron core 14, the iron core 14 is wound with a coil winding 15, and the upper surface of the iron core 14 is connected to a water cooling plate assembly 2. The water cooling plate assembly 2 can effectively dissipate heat from the mover area of ​​the flat-plate linear motor 1 with the iron core 14, thereby improving the load capacity and accuracy of the linear motor 1.

[0032] The mover 13 is threadedly connected with a mover seat 3, which is provided with a mounting groove 6, in which a water-cooled plate assembly 2 is connected, and sliders 17 are connected at both ends of the mover seat 3. The mover 13 is provided with a mover seat 3, which is provided with a mounting groove 6, and in which the water-cooled plate assembly 2 is arranged.

[0033] The mover 13 is installed in the installation groove 6 of the mover seat 3. The mover 13 includes an iron core 14. The water cooling plate assembly 2 is arranged on the surface of the iron core 14. The water cooling assembly 2 is connected to the iron core 14. The water cooling plate assembly 2 is placed on the upper surface of the iron core 14. A threaded hole is punched on the upper surface of the iron core 14.

[0034] like Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the water-cooling plate assembly 2 includes a first water-cooling plate 21, a second water-cooling plate 22, a water-cooling pipe 23 and a groove 216. The second water-cooling plate 22 is fixedly connected to the upper surface of the first water-cooling plate 21. The plate body is made of aluminum, with a light structure and reduced load. The first water-cooling plate 21 and the second water-cooling plate 22 are provided with a groove 216, which is semicircular, and the water-cooling pipe 23 is laid in the groove 216.

[0035] like Figure 2 , Figure 3 , Figure 4 , Figure 5 During installation, the first water-cooling plate 21 and the second water-cooling plate 22 are opened, the water-cooling pipe 23 is buried and placed, the water inlet pipe 29, the water outlet pipe 210, the first shunt pipe 211, the second shunt pipe 212, the third shunt pipe 213, the fourth shunt pipe 214, and the fifth shunt pipe 215 are matched with the groove 216 one by one, and the first water-cooling plate 21 is fitted with the second water-cooling plate 22 by using the positioning pin 25 of the second water-cooling plate 22 and the positioning hole 26 on the first water-cooling plate 21. The first water-cooling plate 21 and the second water-cooling plate 22 are filled and pasted with a high-conductivity epoxy resin layer 28. There is surface contact between the first water-cooling plate 21 and the water-cooling pipe 23, between the water-cooling pipe 23 and the second water-cooling plate 22, between the first water-cooling plate 21 and the second water-cooling plate 22, and between the first water-cooling plate 21, the second water-cooling plate 22, and the water-cooling pipe 23.

[0036] The water-cooling pipe 23 is used for transporting water. The cold water pipe 23 is buried in the groove 216. The gap is pasted and filled with high-conductivity epoxy resin. The water-cooling pipe 23 includes an inlet pipe 29 and an outlet pipe 210. A diversion pipe is arranged between the inlet pipe 29 and the outlet pipe 210. The diversion pipe includes a first diversion pipe 211, a second diversion pipe 212, a third diversion pipe 213, a fourth diversion pipe 214 and a fifth diversion pipe 215; one end of the first diversion pipe 211, the second diversion pipe 212, the third diversion pipe 213, the fourth diversion pipe 214 and the fifth diversion pipe 215 is connected to the water inlet pipe 29; the other end of the first diversion pipe 211, the second diversion pipe 212, the third diversion pipe 213, the fourth diversion pipe 214 and the fifth diversion pipe 215 is connected to the outlet pipe 210.

[0037] The first shunt pipe 211, the second shunt pipe 212, the third shunt pipe 213, the fourth shunt pipe 214, and the fifth shunt pipe 215 are arranged in parallel in sequence; the first shunt pipe 211, the second shunt pipe 212, the third shunt pipe 213, the fourth shunt pipe 214, and the fifth shunt pipe 215 have larger pipe diameters as they are farther from the water inlet, and the shunt pipes in different areas have larger pipe diameters as they are farther from the water inlet, and the different pipe diameters are used to adapt to the different pressures before and after to achieve uniform distribution of flow, thereby ensuring that the heat dissipation efficiency of each area is similar and avoiding uneven heat dissipation. The end of the shunt pipe is connected to the outlet pipe 210 to achieve uniform heat dissipation.

[0038] like Figure 6 The figure shows a schematic diagram of the structure of the mover seat. Guide rails 16 are provided at both ends of the motor base 11. The guide rails 16 are located on both sides of the stator 12. Buffers 18 are provided at both ends of the guide rails 16. The buffers 18 include a buffer base 4 and a rubber block 5. The upper surface of the guide rails 16 is connected with a slider 17, and the upper surface of the slider 17 is connected with the mover seat 3. The slider 17 is slidably connected with the guide rail 16. The guide rail 16 is fixed to both ends of the motor base 11 by screws. The stator is fixed in the middle of the motor base 11. The upper surface of the slider 17 is threadedly connected with the mover seat 3. The mover 13 is threadedly connected with the mover seat 3. The slider 17 moves along the direction of the guide rail 16 to drive the mover seat 3 and the mover 13 to move along the direction of the guide rail 16. The buffer 18 includes a base 4 and a rubber block 5. The base 4 is square and plays a supporting role. The rubber block 5 is cylindrical and can play a buffering role. The buffer 18 is threadedly connected with the motor base 11 to prevent the mover seat 3 and the mover 13 from rushing out of the guide rail 16 through the slider 17, and plays a buffering role. The motor base 11 is made of marble, which has a low thermal expansion coefficient and a small amount of thermal deformation. At the same time, as a base, it can reduce external vibration sources to prevent external vibration from affecting the precision error of the linear motor movement.

[0039] A threaded hole is drilled at the joint of the water inlet pipe 29 and the water outlet pipe 210, and the water inlet pipe 29 and the water outlet pipe 210 are respectively threadedly connected to the quick-insert connector 24 through the threaded hole. The two ends of the water cooling pipe 23 are respectively connected to the quick-insert connector 24. Figure 7 The figure shows the schematic diagram of the quick-connect connector structure. The quick-connect connector 24 is connected to the water inlet pipe 29 and the water outlet pipe 210 respectively. It is used to control the cooling water inflow and outflow. When the linear motor is running, the water supply system of the water cooling system enters the quick-connect connector 24 through the water pipe, then flows into the water cooling pipe 23 through the water inlet pipe 29, then flows into the various diversion pipes with different pipe diameters, and finally merges into the water outlet pipe 210, and flows into the circulation in the cooling system.

[0040] The loop makes the heat flow in each pipe in the water cooling plate evenly distributed, and efficiently takes away the heat from the iron core 14 to achieve uniform heat dissipation. The water cooling pipe 23 is made of copper. The copper-based pipe has excellent thermal conductivity and can effectively transfer heat from the equipment to the coolant, thereby maintaining stable operation of the equipment.

[0041] The screws are installed to fix through the countersunk holes 31 on the upper surface of the mover seat 3 and the through holes 27 on the water-cooled plate assembly 2; the water-cooled plate assembly 2 is threadedly connected to the core 14 by screws passing through the countersunk holes 31 and the through holes 27. The countersunk holes 31 can avoid the protrusion of the screws and ensure the flatness of the installation plane. The first water-cooled plate 21 is provided with positioning pins 25, which are evenly arranged in groups. The second water-cooled plate 22 is provided with positioning holes 26, and the positioning holes 26 are interference fit with the positioning pins 25. The positioning pins 25 of the second water-cooled plate 22 are aligned with the positioning holes 26 on the first water-cooled plate 21, so that the first water-cooled plate 21 and the second water-cooled plate 22 are fitted together.

[0042] Working principle of the present invention: This device provides electrical energy to the electrical components in the device through an external power supply. The water-cooled plate assembly 2 uses coolant as a medium to provide a circulation loop. A heat dissipation device based on a linear motor is fixed by screws between the mover seat 3 and the iron core 14. It is easy to operate and maintain. When the linear motor 1 is moving, the mover 13 generates high temperature and propagates upward through the iron core 14. The cooling water enters the water-cooled plate assembly 2 and passes through the shunt pipes in different areas. The farther the shunt pipe is from the water inlet, the larger the pipe diameter. The different pipe diameters are used to adapt to the different pressures before and after to achieve uniform distribution of flow, thereby ensuring that the heat dissipation efficiency of each area is similar and avoiding uneven heat dissipation. The water-cooled plate can effectively dissipate the heat in the mover area of ​​the flat-type iron-core linear motor, thereby improving the load capacity and precision of the linear motor.

[0043] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A heat dissipation device based on a linear motor, characterized in that: The invention comprises a motor base (11), a stator (12) is arranged on the motor base (11), a mover (13) matched with the stator (12) is arranged on the upper surface of the stator (12), and a water cooling plate assembly (2) is arranged between the mover (13) and the stator (12).

2. A heat dissipation device based on a linear motor according to claim 1, characterized in that: The mover (13) is provided with a mover seat (3), the mover seat (3) is provided with a mounting groove (6), and the water cooling plate assembly (2) is arranged in the mounting groove (6).

3. A heat dissipation device based on a linear motor according to claim 2, characterized in that: The mover (13) is installed in a mounting groove (6) of a mover seat (3), and the mover (13) comprises an iron core (14); a water cooling plate assembly (2) is arranged on the surface of the iron core (14); and the water cooling assembly (2) and the iron core (14) are connected.

4. The heat dissipation device based on a linear motor according to claim 3, characterized in that: The water-cooling plate assembly (2) comprises a first water-cooling plate (21), a second water-cooling plate (22) and a water-cooling pipe (23); a groove (216) is provided inside the first water-cooling plate (21) and the second water-cooling plate (22); the water-cooling pipe (23) is arranged in the groove (216); and the first water-cooling plate (21) and the second water-cooling plate (22) are connected.

5. The heat dissipation device based on a linear motor according to claim 4, characterized in that: There is surface contact between the first water-cooling plate (21) and the water-cooling pipe (23), there is surface contact between the water-cooling pipe (23) and the second water-cooling plate (22), and there is surface contact between the first water-cooling plate (21) and the second water-cooling plate (22); a high thermal conductivity epoxy resin layer (28) is provided between the first water-cooling plate (21) and the second water-cooling plate (22).

6. The heat dissipation device based on a linear motor according to claim 5, characterized in that: A water inlet pipe (29) is provided on one side of the water cooling pipe (23), and a water outlet pipe (210) is provided on the other side of the water cooling pipe (23); a diversion pipe is provided between the water inlet pipe (29) and the water outlet pipe (210), and the diversion pipe comprises a first diversion pipe (211), a second diversion pipe (212), a third diversion pipe (213), a fourth diversion pipe (214) and a fifth diversion pipe (215); one end of the first diversion pipe (211), the second diversion pipe (212), the third diversion pipe (213), the fourth diversion pipe (214) and the fifth diversion pipe (215) is connected to the water inlet pipe (29); and the other ends of the first diversion pipe (211), the second diversion pipe (212), the third diversion pipe (213), the fourth diversion pipe (214) and the fifth diversion pipe (215) are connected to the water outlet pipe (210).

7. The heat dissipation device based on a linear motor according to claim 6, characterized in that: The first shunt pipe (211), the second shunt pipe (212), the third shunt pipe (213), the fourth shunt pipe (214) and the fifth shunt pipe (215) are sequentially arranged in parallel, and the pipe diameters of the first shunt pipe (211), the second shunt pipe (212), the third shunt pipe (213), the fourth shunt pipe (214) and the fifth shunt pipe (215) are increased step by step.

8. The heat dissipation device based on a linear motor according to claim 7, characterized in that: The motor base (11) is provided with a guide rail (16), and the guide rail (16) is located on both sides of the stator (12); buffers (18) are provided at both ends of the guide rail (16); the buffer (18) comprises a buffer base (4) and a rubber block (5); a slider (17) is provided on the guide rail, and the mover seat (3) and the slider (17) are connected.

9. The heat dissipation device based on a linear motor according to claim 8, characterized in that: Both ends of the water cooling pipe are respectively connected with quick-connect connectors (24); the water cooling pipe (23) is a copper-based pipe.

10. A heat dissipation device based on a linear motor according to claim 9, characterized in that: The upper surface of the mover seat (3) is provided with a countersunk hole (31), the water cooling assembly (2) is provided with a through hole (27), the first water cooling plate (21) is provided with a positioning pin (25), and the second water cooling plate (22) is provided with a positioning hole (26), and the positioning hole (26) and the positioning pin (25) are interference fit.

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