Linear motor heat dissipation structure based on T-shaped vapor chamber

Abstract

The utility model relates to a heat dissipation structure of a linear motor based on a T-shaped vapor chamber, and relates to the technical field of heat dissipation of linear motors, the linear motor comprises a base, a stator and a rotor which are matched with each other are arranged on the base, and the rotor is connected with a sliding block and arranged on the stator through a linear guide rail. The rotor comprises T-shaped vapor chambers, heat conduction gaskets, rotor iron cores, windings, cooling water pipes, silicon steel sheets and liquid cooling plates, the windings are arranged on rotor iron core teeth, through holes are formed in the positions, between the adjacent windings, of the iron cores up and down, the T-shaped vapor chambers are vertically and symmetrically inserted into the iron core holes, and the surfaces of the lower ends of the T-shaped vapor chambers are attached to the adjacent windings; a heat conduction gasket is laid on the upper portion of the T-shaped soaking plate and connected with a liquid cooling plate with a built-in cooling water pipe, and the condensation end of the T-shaped soaking plate, the heat conduction gasket, the cooling water pipe and the liquid cooling plate are all arranged in a silicon steel sheet groove. According to the utility model, heat in the winding and the iron core can be uniformly distributed, and the heat dissipation efficiency of the linear motor is improved.

Description

Technical Field

[0001] The utility model relates to the field of motor heat dissipation, in particular to a linear motor heat dissipation structure based on a T-shaped heat spreader. Background Art

[0002] Due to its advantages of high speed, high precision, high efficiency, precise control, as well as advantages in structure, flexibility and reliability, linear motors can be widely used in various fields such as industrial production, scientific research, medical care, aerospace, etc., becoming one of the indispensable key technologies in the modern manufacturing industry.

[0003] With the development needs of high speed, high precision, composite and intelligent linear motors, the heat dissipation of the motor must be considered. Most of the heat generated by the linear motor comes from the heat generated by the current passing through the windings and the iron loss caused by the magnetization and hysteresis of the iron core caused by the magnetic field. Therefore, the heat of the linear motor is concentrated in the windings and the core. The heat generated by the windings and the core needs to be transferred from the middle of the windings and the core to the two ends of the mover, and then from the two ends of the mover to the outside. However, the heat dissipation path has a large thermal resistance and poor heat dissipation effect. Long-term operation of the motor will cause heat accumulation. Excessive motor temperature will not only cause the magnetic properties of the magnetic materials inside the motor to decrease, the magnetic field to weaken, and affect the stability and output power of the motor, but also overheating will damage the insulation material inside the motor, causing insulation aging, which will in turn affect the service life of the motor. Summary of the invention

[0004] In view of the problem of heat dissipation efficiency of linear motors in the prior art, the utility model proposes a heat dissipation structure of a linear motor based on a T-shaped heat spreader, which can evenly distribute the heat inside the winding and the iron core and improve the heat dissipation efficiency of the linear motor.

[0005] To solve the above problems, the technical solution provided by the present invention is:

[0006] A linear motor heat dissipation structure based on a T-shaped heat spreader, comprising a liquid cooling plate, a silicon steel sheet, a mover core, a cooling water pipe, a thermally conductive gasket, a T-shaped heat spreader, and a winding, characterized in that:

[0007] The mover core is provided with a through hole, and a cooling water trough for installing a cooling water pipe is provided inside the liquid cooling plate; the winding is arranged around the core teeth, and the T-shaped heat spreader is inserted into the through hole on the core, the upper end of the T-shaped heat spreader is a condensation end for releasing heat, and the lower end of the heat spreader is an evaporation end for absorbing heat, and the left and right sides of the evaporation end of the T-shaped heat spreader are bonded to the adjacent windings, and the condensation end of the T-shaped heat spreader is bonded to the thermally conductive gasket; the cooling water trough inside the liquid cooling plate is connected to the cooling water pipe, and the liquid cooling plate is connected to the thermally conductive gasket; the condensation end of the T-shaped heat spreader, the thermally conductive gasket, the cooling water pipe and the liquid cooling plate are arranged in the groove of the silicon steel sheet;

[0008] As described above, the linear motor heat dissipation structure based on T-type heat spreader, further, the number of the liquid cooling plate, silicon steel sheet, cooling water pipe, and thermal conductive gasket is two, the number of the T-type heat spreader is ten, and they are symmetrically distributed on the upper and lower sides of the mover core.

[0009] As described above, in the linear motor heat dissipation structure based on the T-shaped heat spreader, further, the through holes on the surface of the mover core are vertically located above and below the gaps between adjacent windings and are symmetrically distributed.

[0010] As described above, the linear motor heat dissipation structure based on the T-shaped heat spreader, further, the condensation end of the T-shaped heat spreader is laid side by side on the mover core, and the condensation end of the T-shaped heat spreader is in surface contact with the thermal conductive gasket.

[0011] As described above, the linear motor heat dissipation structure based on the T-shaped heat spreader, further, the cooling water pipe is arranged in an S shape, and the cooling water pipe is in surface contact with the cooling water tank in the liquid cooling cover plate.

[0012] In the linear motor heat dissipation structure based on the T-shaped heat spreader as described above, further, the liquid cooling plate is made of aluminum alloy; and the thermal conductive gasket is a metal thermal conductive gasket.

[0013] As described above, the linear motor heat dissipation structure based on the T-shaped heat spreader, further, the silicon steel sheet is provided with a water inlet and a water outlet; the cross-sections of the water inlet and the water outlet are circular, and the cross-section of the cooling water pipe matches the cross-sections of the water inlet and the water outlet.

[0014] As described above, the linear motor heat dissipation structure based on the T-shaped heat spreader, further, the T-shaped heat spreader is a copper-based heat spreader.

[0015] In the linear motor heat dissipation structure based on the T-shaped heat spreader as described above, further, the cooling water pipe is an aluminum pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the present invention proposes a linear motor heat dissipation structure based on a T-type heat spreader, and designs a phase change heat spreader that matches the linear motor in combination with the size and working conditions of the linear motor. The phase change heat spreader is manufactured into a T-shape according to the actual conditions of the motor, and the T-type heat spreader is added between the winding, the rotor core, the thermal pad and the liquid cooling plate. The evaporation end of the T-type heat spreader is in contact with the core high temperature area of ​​the winding and the rotor core, and the condensation end of the T-type heat spreader is connected to the liquid cooling plate through a thermal pad. With the help of the gas-liquid conversion inside the heat spreader, the heat generated inside the winding and the rotor core is evenly transferred to the condensation end of the T-type heat spreader, and the generated heat is taken away by the flow of circulating cold water in the liquid cooling plate. The T-type heat spreader is symmetrically arranged up and down so that the core high temperature area of ​​the winding and the rotor core has two evaporation ends, and the internal heat can be transferred up and down at the same time, and the heat transfer efficiency is greatly improved. In addition, the condensing end area of ​​the T-shaped heat spreader is large, and when spliced ​​together, it forms a horizontal heat spreader, which not only increases the heat dissipation area, but also takes away the heat from the surface of the core, greatly improving the heat dissipation efficiency.

[0017] In summary, the linear motor heat dissipation structure based on the T-shaped heat spreader makes it less likely for the linear motor to generate heat accumulation during long-term operation, which is of great significance for improving the motor's working efficiency, extending its service life, maintaining performance stability, saving energy, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is an exploded view of the heat dissipation structure of the present invention.

[0020] Figure 2 It is a top view of the heat dissipation structure of the present invention.

[0021] Figure 3 for Figure 2 Sectional view along line AA.

[0022] Figure 4 It is a three-dimensional schematic diagram of the liquid cooling plate of the present invention.

[0023] Figure 5 It is a three-dimensional schematic diagram of the silicon steel sheet of the present invention.

[0024] Figure 6 It is a three-dimensional schematic diagram of the mover core of the present invention.

[0025] Figure 7 It is a three-dimensional schematic diagram of the T-shaped heat sink of the present invention.

[0026] Figure 8 It is a three-dimensional schematic diagram of the cooling water pipe of the present invention.

[0027] Fig. 9 It is a three-dimensional schematic diagram of the thermal conductive gasket of the present invention.

[0028] Attached figure identification: 1. Liquid cooling plate; 2. Silicon steel sheet; 3. Mator core; 4. Winding; 5. T-shaped heat spreader; 6. Cooling water pipe; 7. Thermal conductive gasket; 11. Cooling water trough; 21. Water inlet; 22. Water outlet; 31. Through hole; 32 Core teeth; 51. Evaporation end; 52 Condensation end. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example:

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" in the embodiments of the utility model and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly defined. In addition, unless otherwise clearly defined and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0036] See also Figure 1-8The practical implementation provides a linear motor heat dissipation structure based on a T-type heat spreader, including a liquid cooling plate 1, a silicon steel sheet 2, a moving core 3, a cooling water pipe 6, a thermally conductive gasket 7, a T-type heat spreader 5, and a winding 4. The moving core 3 is provided with a through hole 31. A cooling water tank 11 for installing the cooling water pipe 6 is provided inside the liquid cooling plate 1. The winding 4 is arranged around the core teeth 3, and the T-type heat spreader 5 is inserted into the through hole 31 on the core. The upper end of the T-type heat spreader 5 is a condensation end 52 for releasing heat, and the lower end of the heat spreader is an evaporation end 51 for absorbing heat. The evaporation end 51 of the T-type heat spreader 5 is attached to the adjacent winding 4 on the left and right sides, and the condensation end 52 of the T-type heat spreader 5 is attached to the thermally conductive gasket 7. The cooling water tank 11 inside the liquid cooling plate 1 is connected to the cooling water pipe 6, and the liquid cooling plate 1 is connected to the thermally conductive gasket 7. The T-type heat spreader condensation end 52, the thermally conductive gasket 7, the cooling water pipe 6 and the liquid cooling plate 1 are arranged in the groove of the silicon steel sheet 2. In this embodiment, the T-type heat spreader is added between the winding, the moving core, the thermally conductive gasket and the liquid cooling plate, the evaporation end of the T-type heat spreader is in contact with the core high temperature area of ​​the winding and the moving core, and the condensation end of the T-type heat spreader is connected to the liquid cooling plate through the thermally conductive gasket. With the help of the gas-liquid conversion inside the heat spreader, the heat generated inside the winding and the moving core is evenly transferred to the condensation end of the T-type heat spreader, and the generated heat is taken away by the flow of circulating cold water in the liquid cooling plate.

[0037] In some embodiments, the T-shaped heat spreader is symmetrically arranged up and down so that the core high temperature area of ​​the winding and the moving core has two evaporation ends, and the internal heat can be transferred up and down at the same time, greatly improving the heat transfer efficiency. In addition, the condensation end area of ​​the T-shaped heat spreader is large, and when spliced ​​together, it forms a horizontal heat spreader, which not only increases the heat dissipation area, but also takes away the heat from the core surface, greatly improving the heat dissipation efficiency.

[0038] In some embodiments, the condensing end of the T-shaped heat spreader is in surface contact with the thermally conductive gasket, and the thermally conductive gasket is in surface contact with the liquid cooling plate, so that the heat transfer path area is larger and the heat dissipation efficiency of the motor is improved.

[0039] In some embodiments, the S-shaped arrangement of the cooling water pipes first increases the contact area between the cooling water pipes and the heat dissipation medium, which can speed up the heat conduction and heat dissipation speed; secondly, the S-shaped arrangement makes the flow of cooling water in the water pipes more turbulent, increases the heat exchange between the cooling water and the water pipe wall, and is conducive to improving the heat dissipation effect; in addition, the S-shaped arrangement can also reduce the heat transfer between the water pipes, which helps to keep the cooling water low; finally, the S-shaped arrangement can make the cooling water flow evenly in the water pipes, thereby achieving uniform cooling of the entire heat dissipation system. This can avoid local overheating or overcooling and improve the stability and reliability of the heat dissipation system.

[0040] In some embodiments, the cooling water pipe is an aluminum pipe. The aluminum pipe has the advantages of excellent thermal conductivity, lightweight design, corrosion resistance, low cost, easy processing, good thermal stability and recyclability, and is suitable for various cooling system applications, which can improve cooling efficiency, reduce maintenance costs and reduce environmental pollution.

[0041] In some embodiments, the liquid cooling plate is made of aluminum alloy. More preferably, the material of the liquid cooling plate may also be copper, copper alloy, aluminum, aluminum alloy, stainless steel, ceramic, etc. In this embodiment, the aluminum alloy is selected as the material of the liquid cooling plate, which can take into account the advantages of thermal conductivity, lightweight design, good processing performance, corrosion resistance, cost reduction, and good surface treatment performance, and is a more ideal choice.

[0042] In some embodiments, the thermally conductive pad is a metal thermally conductive pad. The metal thermally conductive pad has excellent thermal conductivity, pressure adaptability, high temperature resistance, oxidation resistance and corrosion resistance, and long-term stability, and is suitable for various heat dissipation applications, and can effectively improve heat dissipation efficiency, protect heat dissipation components, and extend the service life of the equipment.

[0043] In some embodiments, the T-shaped vapor chamber is a copper-based vapor chamber. Copper-based vapor chambers have excellent thermal conductivity, high strength and rigidity, good corrosion resistance, good machinability, good thermal expansion coefficient matching, and good thermal stability, and are suitable for various applications requiring heat soaking, can improve the stability and efficiency of the heating or cooling process, protect workpieces and equipment, and extend service life.

[0044] In summary, the utility model combines the size and working conditions of the linear motor to design a phase change heat spreader that matches the linear motor. The phase change heat spreader is manufactured into a T shape according to the actual situation of the motor. The T-shaped heat spreader is added between the winding, the rotor core, the thermal pad and the liquid cooling plate. The evaporation end of the T-shaped heat spreader is in contact with the core high temperature area of ​​the winding and the rotor core. The condensation end of the T-shaped heat spreader is connected to the liquid cooling plate through a thermal pad. With the help of the gas-liquid conversion inside the heat spreader, the heat generated inside the winding and the rotor core is evenly transferred to the condensation end of the T-shaped heat spreader, and the generated heat is taken away by the flow of circulating cold water in the liquid cooling plate. In summary, the above implementation method, through the linear motor heat dissipation structure based on the T-shaped heat spreader, makes it difficult for the linear motor to generate heat accumulation during long-term operation, which is of great significance for improving the working efficiency of the motor, extending the service life, maintaining performance stability, saving energy and improving safety.

[0045] Matters not covered in the embodiments of the present invention are known technologies.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable ordinary technicians in the field to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the essence of the content of the utility model should be included in the protection scope of the utility model.

Claims

1. A linear motor heat dissipation structure based on a T-shaped heat spreader, comprising a liquid cooling plate (1), a silicon steel sheet (2), a mover core (3), a cooling water pipe (6), a thermally conductive gasket (7), a T-shaped heat spreader (5), and a winding (4), characterized in that: The mover core (3) is provided with a through hole (31), and the liquid cooling plate (1) is provided with a cooling water tank (11) for installing a cooling water pipe (6); The winding (4) is arranged around the core teeth (32), the T-shaped heat spreader (5) is inserted into the through hole (31) on the core, the upper end of the T-shaped heat spreader (5) is a condensation end (52) for releasing heat, the lower end of the heat spreader is an evaporation end (51) for absorbing heat, the left and right sides of the evaporation end (51) of the T-shaped heat spreader (5) are in contact with the adjacent winding (4), and the condensation end (52) of the T-shaped heat spreader (5) is in contact with the thermal conductive pad (7); The cooling water tank (11) inside the liquid cooling plate (1) is connected to the cooling water pipe (6), and the liquid cooling plate (1) is connected to the thermal conductive pad (7); The T-shaped heat spreader condensation end (52), the thermally conductive gasket (7), the cooling water pipe (6) and the liquid cooling plate (1) are arranged in the groove of the silicon steel sheet (2).

2. The linear motor heat dissipation structure based on a T-shaped heat spreader according to claim 1, characterized in that: The number of the liquid cooling plate (1), silicon steel sheet (2), cooling water pipe (6), and thermally conductive gasket (7) is two, and the number of the T-shaped heat spreader (5) is ten, which are symmetrically distributed on the upper and lower sides of the mover core (3).

3. The linear motor heat dissipation structure based on a T-shaped heat spreader according to claim 1, characterized in that: The through holes (31) on the surface of the mover core (3) are vertically located above and below the gaps between adjacent windings (4) and are symmetrically distributed.

4. The linear motor heat dissipation structure based on a T-shaped heat spreader according to claim 1, characterized in that: The condensation ends (52) of the T-shaped heat spreader (5) are laid side by side on the mover core (3), and the condensation ends (52) of the T-shaped heat spreader (5) are in surface contact with the thermal conductive pad (7).

5. The linear motor heat dissipation structure based on a T-shaped heat spreader according to claim 1, characterized in that: The cooling water pipe (6) is arranged in an S shape, and the cooling water pipe (6) is in surface contact with the cooling water tank (11) in the liquid cooling plate (1).

6. The linear motor heat dissipation structure based on a T-shaped heat spreader according to claim 1, characterized in that: The liquid cooling plate (1) is made of aluminum alloy; the thermal conductive gasket is a metal thermal conductive gasket.

7. The linear motor heat dissipation structure based on a T-shaped heat spreader according to claim 1, characterized in that: The silicon steel sheet (2) is provided with a water inlet (21) and a water outlet (22); the cross-sections of the water inlet (21) and the water outlet (22) are circular, and the cross-section of the cooling water pipe (6) matches the cross-sections of the water inlet (21) and the water outlet (22).

8. The linear motor heat dissipation structure based on a T-shaped heat spreader according to claim 1, characterized in that: The T-shaped heat spreader (5) is a copper-based heat spreader.

9. The linear motor heat dissipation structure based on a T-shaped heat spreader according to claim 1, characterized in that: The cooling water pipe (6) is an aluminum pipe.

Images