A type of air-cooled linear motor

Abstract

This utility model discloses an air-cooled linear motor, comprising: a secondary motor and a primary motor; the primary motor includes a mounting base, a lamination assembly, and several tie bolts disposed close to the side of the lamination assembly; the side of the lamination assembly also has several protrusions, on which several coils are respectively disposed; an air-cooling component is disposed close to at least one end of the top or bottom of the lamination assembly, and the tie bolts pass through the air-cooling component. By distributing the air-cooling component close to at least one end of the top or bottom of the lamination assembly within the primary motor, the heat generated by the lamination assembly and coils within the primary motor can be quickly conducted to the air-cooling component. The air-cooling component, by generating airflow, carries away the heat conducted from the lamination assembly and coils, thus solving the problem of difficult heat dissipation inside the primary motor, meeting the high heat dissipation requirements of high-power permanent magnet synchronous linear motors, and enabling the linear motor to operate with a moving primary and a fixed secondary.

Description

Technical Field

[0001] This utility model relates to the field of linear motor technology, specifically to an air-cooled linear motor. Background Technology

[0002] Currently, in the field of high-power permanent magnet synchronous linear motors, the main heat dissipation methods are concentrated on external air cooling and internal water cooling. External air cooling is achieved by natural cooling or by adding a cooling fan to the outside of the motor secondary to enhance external air circulation, thereby accelerating the heat dissipation of the motor. Internal water cooling is achieved by adding water cooling pipes or water cooling tanks inside the secondary of the linear motor, thereby enabling the motor to achieve rapid cooling.

[0003] In related technologies, in high-power iron-core linear motors using external air cooling, insulation plates are usually installed on the outside of the windings to prevent leakage caused by winding damage. However, external air cooling only provides some cooling effect to the outer side of the insulation plate due to airflow. Because the insulation plate has poor thermal conductivity, it cannot effectively conduct the heat generated by the primary laminations and coils in a timely manner, leading to heat accumulation inside the primary motor and seriously affecting the performance and efficiency of the high-power permanent magnet synchronous linear motor. In addition, although the cooling effect is direct and rapid in internal water cooling, this method relies on the strict sealing of the water cooling pipes. Once the water cooling pipes rupture, it will directly cause a short circuit in the coils. Furthermore, if the traditional embedded water cooling method is used, the water cooling pipes need to be flexibly connected or the water cooling equipment needs to be installed on the moving primary when the primary moves. Its internal structure is limited by the winding arrangement, resulting in a large number of bends, which brings great design, processing, movement, space, and weight difficulties, and cannot meet the requirements of linear motors that can be used for moving primary and fixed secondary.

[0004] Therefore, there is an urgent need for an air-cooled linear motor that can effectively remove the heat generated by the laminations and coils in the primary winding of the motor, ensuring the heat dissipation requirements of the high-power permanent magnet synchronous linear motor, while also enabling the linear motor to operate with a moving primary and a fixed secondary. Utility Model Content

[0005] The purpose of this invention is to provide an air-cooled linear motor to solve at least one aspect of the problems and defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An air-cooled linear motor includes:

[0008] The motor secondary and the motor primary;

[0009] The primary motor includes a mounting base, a lamination assembly, and several tie bolts disposed close to the side of the lamination assembly;

[0010] The side of the laminate group is also provided with a number of protrusions, and a number of coils are respectively provided on the number of protrusions;

[0011] At least one end of the top or bottom of the stacked plate group is fitted with an air-cooling component, and a plurality of the tie bolts are inserted through the air-cooling component.

[0012] The air-cooled linear motor according to this scheme has at least the following technical advantages:

[0013] This air-cooled linear motor uses an air-cooling component that is tightly attached to at least one end of the laminations inside the motor primary. Tie bolts are used to secure the air-cooling component to the laminations, allowing heat generated by the laminations and coils inside the motor primary to be quickly conducted to the air-cooling component. The air-cooling component then generates airflow, carrying away the heat conducted from the laminations and coils. Compared to existing air-cooling methods for linear motors, this bypasses the insulating plate, preventing it from obstructing airflow. This effectively solves the problem of heat dissipation difficulties for the laminations and coils inside the motor primary, avoiding demagnetization or performance degradation due to heat accumulation. This ensures the stability and thrust density of the motor operation, meeting the high heat dissipation requirements of high-power permanent magnet synchronous linear motors.

[0014] Furthermore, the tie bolts not only serve to fix the lamination assembly and the air-cooling component, but also assist in the heat conduction of the lamination assembly. This ensures the stability of the installation of the lamination assembly and the air-cooling component, and achieves an organic combination of structure and function, greatly improving the compactness and reliability of the overall motor structure.

[0015] Meanwhile, compared to water cooling systems, air cooling of linear motors eliminates the need for complex pipes and coolants, making the primary structure of the motor simpler and lighter. Under moving primary conditions, the lighter primary weight reduces the inertia during motor startup and operation, improving the motor's response speed and motion accuracy. This enables the motor to achieve linear motion more quickly and accurately, meeting the requirements of applications with high motion performance. Thus, this allows the linear motor to be used in conditions where the primary is moving and the secondary is fixed.

[0016] As a further embodiment of this utility model: the air-cooling component is closely attached to both the top and bottom of the stacked plate group.

[0017] Because air-cooling components are installed closely at the top and bottom of the lamination assembly, the heat generated by the lamination assembly and the coil can be conducted to the air-cooling components at the top and bottom of the lamination assembly, which greatly increases the heat conduction speed and heat dissipation area of ​​the lamination assembly, effectively reduces the temperature of the linear motor, and ensures the consistency of heat dissipation of the lamination assembly and the coil, avoiding local overheating caused by uneven heat dissipation, and ensuring that the linear motor operates stably in a suitable temperature environment.

[0018] As a further embodiment of this utility model: the air-cooled component includes a ventilation duct, and a fan is provided at one end of the ventilation duct.

[0019] As a further embodiment of this utility model: a base plate is provided at one end of the ventilation duct, the base plate is closely attached to the stacked plate assembly, and the tie bolt passes through the side of the base plate.

[0020] As a further embodiment of this utility model: a fan flange is provided on the base plate, and the fan is connected to one end of the ventilation duct through the fan flange.

[0021] As a further embodiment of this utility model: an air guide cavity is provided inside the ventilation duct, and a number of heat dissipation fins are provided inside the air guide cavity on the side near the substrate.

[0022] The air-cooled assembly includes a ventilation duct with a fan at one end and a base plate at the other. The base plate is tightly attached to the lamination assembly, and tie bolts are inserted through the side of the base plate. A fan flange is mounted on the base plate, and the fan is connected to one end of the ventilation duct via the fan flange. An air guide cavity is provided inside the ventilation duct, and several heat dissipation fins are arranged on the side of the air guide cavity near the base plate. During operation, the lamination assembly and coil in the primary winding of the linear motor generate a large amount of heat. By tightly attaching the base plate of the air-cooled assembly to the lamination assembly, the lamination assembly and coil can quickly conduct heat to the base plate, and then conduct the heat to the heat dissipation fins in the air guide cavity through the base plate. This drives the fan to generate high-speed airflow into the ventilation duct, allowing the air in the air guide cavity to circulate rapidly and carry away the heat from the base plate and heat dissipation fins, thereby achieving rapid cooling of the lamination assembly and coil.

[0023] By using tie bolts to tightly attach the substrate to the lamination assembly, an efficient heat conduction path is provided for the heat generated by the lamination assembly and coils. At the same time, the substrate and heat dissipation fins are made of materials with good thermal conductivity, which can quickly transfer heat from the heat source to the air guide cavity, reducing the accumulation of heat inside the motor primary, effectively lowering the operating temperature of the motor primary, greatly improving heat dissipation efficiency, ensuring the operational stability of the linear motor, reducing thermal stress damage to the motor structure, thereby extending the service life of the motor, and reducing the maintenance cost and replacement frequency of the motor.

[0024] As a further improvement of this utility model, a heat pipe is provided on the substrate.

[0025] To further improve the thermal conductivity of the substrate, heat pipes are installed on the substrate, and heat is efficiently conducted using the principle of evaporative cooling. The heat pipes can quickly absorb heat and conduct it to the condenser side of the heat pipes. The condenser side is in close contact with the inner surface of the substrate on the side of the heat sink fins, which accelerates the heat conduction efficiency of the laminated assembly. This allows the heat to be conducted to the heat sink fins more effectively, and the airflow generated by the fan carries away the heat from the substrate and heat sink fins through the air guide cavity, further improving the heat dissipation efficiency and ensuring rapid cooling of the laminated assembly and the coil.

[0026] As a further embodiment of this utility model, the substrate and the heat dissipation fins are respectively made of copper alloy or aluminum alloy.

[0027] Since the substrate and heat sink fins are made of copper alloy or aluminum alloy respectively, both of which have good thermal conductivity, the substrate and heat sink fins can quickly absorb and conduct the heat generated by the stacked fins, accelerate the heat conduction speed from the heat source to the heat dissipation part, and thus improve the overall heat dissipation efficiency.

[0028] As a further improvement of this utility model, an insulating plate is provided between the lamination group and the coil.

[0029] By placing an insulating plate between the lamination assembly and the coil, the lamination assembly and the coil can be effectively isolated, preventing direct contact between the lamination assembly and the coil from causing short circuits or leakage. This avoids damage to the equipment due to short circuits or leakage, reduces the possibility of safety accidents, enhances the overall insulation reliability of the motor, and ensures the stability and safety of the motor's electrical performance.

[0030] As a further embodiment of this utility model: an air gap is provided between the primary and secondary windings of the motor, and the width of the air gap is 0.5mm-12mm.

[0031] Because an air gap is provided between the primary and secondary windings of the motor, with a width of 0.5mm-12mm, it helps to optimize the magnetic field coupling between the primary and secondary windings. This ensures that the magnetic field can be transmitted smoothly from the primary to the secondary windings through the air gap, enabling the motor to generate effective electromagnetic thrust. It also effectively reduces magnetic leakage, ensuring the motor's efficiency and performance. Attached Figure Description

[0032] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0033] Figure 1 This is a schematic diagram of the overall structure of an air-cooled linear motor;

[0034] Figure 2 This is a side sectional view of an air-cooled linear motor.

[0035] Figure 3 This is a schematic diagram of the primary structure of an air-cooled linear motor.

[0036] Figure 4 This is a schematic cross-sectional view of the primary structure of an air-cooled linear motor.

[0037] Figure 5 This is a schematic diagram of the air-cooling component structure of an air-cooled linear motor.

[0038] Figure label:

[0039] 1. Motor primary; 101. Mounting base; 102. Laminate assembly; 103. Tie bolt; 104. Coil; 105. Insulation plate; 2. Motor secondary; 201. Magnet; 3. Air-cooled assembly; 301. Ventilation duct; 302. Fan; 303. Base plate; 304. Fan flange; 305. Air guide cavity; 306. Heat sink fins. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0043] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0044] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0046] like Figure 1-4 The present invention, as shown in this embodiment, provides an air-cooled linear motor, comprising: a primary motor 1 and a secondary motor 2; the secondary motor 2 is provided with a secondary mounting bracket and a magnet 201 connected to the secondary mounting bracket; the primary motor 1 includes a mounting base 101, a lamination assembly 102, and a plurality of tie bolts 103 disposed close to the side of the lamination assembly 102; the side of the lamination assembly 102 is also provided with a plurality of protrusions, and a plurality of coils 104 are respectively disposed on the protrusions; at least one end of the top or bottom of the lamination assembly 102 is closely attached to an air-cooling component 3, and the plurality of tie bolts 103 pass through the air-cooling component 3.

[0047] Specifically, this air-cooled linear motor has an air-cooling component 3 tightly attached to at least one end of the lamination group 102 inside the motor primary 1, and is fixed to the lamination group 102 by tie bolts 103. This allows the heat generated by the lamination group 102 and the coil 104 inside the motor primary 1 to be quickly conducted to the air-cooling component 3. The air-cooling component 3 generates airflow to carry away the heat conducted from the lamination group 102 and the coil 104. Compared with the existing air-cooling method of linear motors, this method bypasses the insulation plate, preventing the insulation plate from blocking airflow. This effectively solves the problem of heat dissipation difficulty of the lamination group 102 and the coil 104 inside the motor primary 1, and avoids material demagnetization or performance degradation due to heat accumulation. This ensures the stability and thrust density of the motor operation and meets the high heat dissipation requirements of high-power permanent magnet synchronous linear motors.

[0048] Furthermore, the tie bolt 103 not only serves to fix the lamination group 102 to the air-cooled assembly 3, but also assists in the heat conduction of the lamination group 102. This ensures the stability of the installation of the lamination group 102 and the air-cooled assembly 3, and achieves an organic combination of structure and function, greatly improving the compactness and reliability of the overall motor structure.

[0049] Meanwhile, compared to water cooling systems, air cooling of linear motors eliminates the need for complex pipes and coolant, making the structure of the motor primary 1 simpler and lighter. Under moving primary conditions, the lighter weight of the motor primary 1 reduces the inertia during motor startup and operation, improving the motor's response speed and motion accuracy. This enables the motor to achieve linear motion more quickly and accurately, meeting the requirements of applications with high motion performance. Thus, the linear motor can be used in conditions where the primary is moving and the secondary is fixed.

[0050] According to an embodiment of the present invention, the top and bottom of the stacked assembly 102 are both fitted with air-cooled components 3.

[0051] Specifically, since the top and bottom of the lamination group 102 are both closely fitted with air-cooling components 3, the heat generated by the lamination group 102 and the coil 104 can be conducted to the air-cooling components 3 at the top and bottom of the lamination group 102 respectively. This greatly increases the heat conduction speed and heat dissipation area of ​​the lamination group 102, effectively reduces the temperature of the linear motor, and ensures the consistency of heat dissipation of the lamination group 102 and the coil 104. This avoids local overheating caused by uneven heat dissipation and ensures that the linear motor operates stably in a suitable temperature environment.

[0052] Furthermore, such as Figure 2-5 As shown, the air-cooled assembly 3 includes a ventilation duct 301, a fan 302 is provided at one end of the ventilation duct 301, a base plate 303 is provided at one end of the ventilation duct 301, the base plate 303 is provided in close contact with the laminate assembly 102, a tie bolt 103 passes through the side of the base plate 303, a fan flange 304 is provided on the base plate 303, the fan 302 is connected to one end of the ventilation duct 301 through the fan flange 304, an air guide cavity 305 is provided in the ventilation duct 301, and a number of heat dissipation fins 306 are provided in the air guide cavity 305 on the side near the base plate 303.

[0053] Specifically, the air-cooled assembly 3 includes a ventilation duct 301, with a fan 302 at one end and a base plate 303 at the other end. The base plate 303 is closely attached to the laminate assembly 102, and tie bolts 103 pass through the side of the base plate 303. A fan flange 304 is provided on the base plate 303, and the fan 302 is connected to one end of the ventilation duct 301 through the fan flange 304. An air guide cavity 305 is provided inside the ventilation duct 301, and several heat dissipation fins 306 are provided on the side of the air guide cavity 305 near the base plate 303. During operation, the linear motor... The lamination group 102 and coil 104 in the primary stage 1 of the motor generate a large amount of heat. By closely attaching the substrate 303 of the air-cooling component 3 to the lamination group 102, the lamination group 102 and coil 104 can quickly conduct heat to the substrate 303, and the substrate 303 conducts heat to a number of heat dissipation fins 306 in the air guide cavity 305. The fan 302 drives the high-speed airflow into the ventilation duct 301, which makes the air in the air guide cavity 305 circulate quickly and removes the heat on the substrate 303 and heat dissipation fins 306, thereby achieving rapid cooling of the lamination group 102 and coil 104.

[0054] By using tie bolts 103 to tightly attach the substrate 303 to the lamination assembly 102, an efficient heat conduction path is provided for the heat generated by the lamination assembly 102 and the coil 104. At the same time, the substrate 303 and the heat dissipation fins 306 are made of materials with good thermal conductivity, which can quickly transfer heat from the heat source to the air guide cavity 305, reducing the accumulation of heat inside the motor primary 1, effectively lowering the operating temperature of the motor primary 1, greatly improving heat dissipation efficiency, ensuring the operational stability of the linear motor, reducing thermal stress damage to the motor structure, thereby extending the service life of the motor, and reducing the maintenance cost and replacement frequency of the motor.

[0055] Furthermore, a heat pipe is provided on the substrate 303.

[0056] Specifically, in order to further improve the thermal conductivity of the substrate 303, heat pipes are installed on the substrate 303 to efficiently conduct heat using the principle of evaporative cooling. The heat pipes can quickly absorb heat and conduct it to the condensation side of the heat pipes. The condensation side is in close contact with the inner surface of the substrate 303 on the side of the heat dissipation fins 306, which accelerates the heat conduction efficiency of the stacked assembly 102. This allows the heat to be conducted to the heat dissipation fins 306 more effectively. The airflow generated by the fan 302 carries away the heat from the substrate 303 and the heat dissipation fins 306 through the air guide cavity 305, further improving the heat dissipation efficiency and ensuring the rapid cooling of the stacked assembly 102 and the coil 104.

[0057] Furthermore, the substrate 303 and the heat dissipation fins 306 are each made of copper alloy or aluminum alloy.

[0058] Specifically, since the substrate 303 and the heat dissipation fins 306 are independently made of copper alloy or aluminum alloy, both of which have good thermal conductivity, the substrate 303 and the heat dissipation fins 306 can quickly absorb and conduct the heat generated by the stacked assembly 102, accelerate the heat conduction speed from the heat source to the heat dissipation part, and thus improve the overall heat dissipation efficiency.

[0059] According to embodiments of the present invention, such as Figure 3 As shown, an insulating plate 105 is provided between the lamination group 102 and the coil 104.

[0060] Specifically, by setting an insulating plate 105 between the lamination group 102 and the coil 104, the lamination group 102 and the coil 104 can be effectively isolated, preventing direct contact between the lamination group 102 and the coil 104 from causing short circuits or leakage, avoiding damage to the equipment due to short circuits or leakage, reducing the possibility of safety accidents, enhancing the overall insulation reliability of the motor, and ensuring the stability and safety of the motor's electrical performance.

[0061] It should also be noted that an air gap is provided between the primary motor 1 and the secondary motor 2, with a width of 0.5mm-12mm.

[0062] Specifically, an air gap is provided between the primary motor 1 and the secondary motor 2; the width of the air gap is 0.5mm-12mm, which helps to optimize the magnetic field coupling between the primary motor and the secondary motor. This ensures that the magnetic field can be transmitted smoothly from the primary motor 1 to the secondary motor 2 through the air gap, enabling the motor to generate effective electromagnetic thrust, and can effectively reduce magnetic leakage, ensuring the efficiency and performance of the motor.

[0063] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A wind-cooled linear motor, characterized in that, include: The primary winding (1) and the secondary winding (2) of the motor; The motor primary (1) includes a mounting base (101), a lamination group (102), and a plurality of tie bolts (103) disposed close to the side of the lamination group (102). The side of the stacked plate group (102) is also provided with a number of protrusions, and a number of coils (104) are respectively provided on the protrusions. At least one end of the top or bottom of the stacked plate group (102) is closely attached to the air-cooling component (3), and a plurality of the tie bolts (103) are inserted through the air-cooling component (3).

2. The air-cooled linear motor according to claim 1, characterized in that, The air-cooling component (3) is attached to both the top and bottom of the stacked plate group (102).

3. The air-cooled linear motor according to claim 1 or 2, characterized in that, The air-cooled component (3) includes a ventilation duct (301), and a fan (302) is provided at one end of the ventilation duct (301).

4. The air-cooled linear motor according to claim 3, characterized in that, One end of the ventilation duct (301) is provided with a base plate (303), the base plate (303) is provided in close contact with the stacked plate group (102), and the tie bolt (103) passes through the side of the base plate (303).

5. The air-cooled linear motor according to claim 4, characterized in that, A fan flange (304) is provided on the base plate (303), and the fan (302) is connected to one end of the ventilation duct (301) through the fan flange (304).

6. The air-cooled linear motor according to claim 5, characterized in that, The ventilation duct (301) is provided with an air guide cavity (305), and a number of heat dissipation fins (306) are provided in the air guide cavity (305) on the side near the substrate (303).

7. The air-cooled linear motor according to claim 6, characterized in that, A heat pipe is provided on the substrate (303).

8. The air-cooled linear motor according to claim 7, characterized in that, The substrate (303) and the heat sink fins (306) are each made of copper alloy or aluminum alloy.

9. The air-cooled linear motor according to claim 1, characterized in that, An insulating plate (105) is provided between the lamination group (102) and the coil (104).

10. The air-cooled linear motor according to claim 1 or 2, characterized in that, An air gap is provided between the primary (1) and the secondary (2) of the motor; the width of the air gap is 0.5mm-12mm.

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