A linear motor heat dissipation structure based on a heat pipe

Abstract

The present application discloses a linear motor heat dissipation structure based on a heat pipe, which relates to the technical field of motor heat dissipation and includes a stator and a rotor slidably disposed on the stator. A placement groove is provided on the rotor, and further includes: a heat pipe, which is fixedly disposed in the placement groove; a heat dissipation box, which is located above the heat pipe, the heat dissipation box is fixedly disposed in the placement groove, and there is a gap between the lower end of the heat dissipation box and the heat pipe; a primary heat dissipation component, which is disposed in the heat dissipation box and is used to realize gas exchange in the heat dissipation box; a secondary heat dissipation component, which is disposed on one side of the primary heat dissipation component and is used to enhance the heat dissipation efficiency of the primary heat dissipation component; wherein, an air outlet is provided on one side of the heat dissipation box, a nozzle is provided on the bottom wall of the heat dissipation box, and an air inlet is provided on the upper end of the heat dissipation box; the present application has the effect of improving the heat dissipation efficiency of the motor.

Description

Technical Field

[0001] The present application relates to the technical field of motor heat dissipation, and in particular to a linear motor heat dissipation structure based on a temperature equalizer. Background Art

[0002] With the rapid development of modern manufacturing industry, the demand for high-speed precision processing equipment is increasing. Compared with the traditional transmission method, the linear motor direct drive feed system has significant advantages such as fast feed speed, large acceleration, and high positioning accuracy. It does not require any intermediate mechanical transmission mechanism, eliminates the loss and limitation of the mechanical transmission mechanism, and realizes "zero transmission" from the motor to the workbench, which can greatly improve the efficiency of the entire system.

[0003] A related linear motor consists of a stator, a mover and a temperature equalizing plate. When power is applied, the mover slides on the stator to convert electrical energy into mechanical energy. During the operation of the linear motor, heat energy is generated, causing the temperature of the motor to rise. When the temperature of the motor rises to a certain temperature, a fan is used to dissipate heat from the linear motor so that the linear motor can work normally again.

[0004] When a fan is used to dissipate heat for a linear motor, wind from the fan enters the interior of the linear motor from the external components of the linear motor, thereby lowering the external temperature, but the internal temperature is still at a relatively high temperature, thereby reducing the efficiency of the motor's heat dissipation. Summary of the invention

[0005] In order to improve the efficiency of motor heat dissipation, the present application provides a linear motor heat dissipation structure based on a temperature equalizer.

[0006] The present application provides a linear motor heat dissipation structure based on a temperature homogenizing plate, which adopts the following technical solution:

[0007] A linear motor heat dissipation structure based on a temperature equalizing plate comprises a stator and a mover slidably arranged on the stator, wherein a placement groove is arranged on the mover, and further comprises:

[0008] A temperature averaging plate, the temperature averaging plate is fixedly arranged in the placement groove;

[0009] A heat sink, the heat sink is located at the upper end of the temperature averaging plate, the heat sink is fixed in the placement groove, and a gap is formed between the lower end of the heat sink and the temperature averaging plate;

[0010] A primary heat dissipation component, which is disposed in the heat dissipation box and is used to realize gas exchange in the heat dissipation box; a secondary heat dissipation component, which is disposed on one side of the primary heat dissipation component and is used to enhance the heat dissipation efficiency of the primary heat dissipation component;

[0011] Wherein, an air outlet is provided on one side of the heat dissipation box, a spray port is provided on the bottom wall of the heat dissipation box, and an air inlet is provided at the upper end of the heat dissipation box.

[0012] By adopting the above technical solutions, the presence of the heat pipe makes the heat energy in the linear motor conduct through the heat pipe, the presence of the heat dissipation box increases the heat dissipation performance of the linear motor, the primary heat dissipation component exchanges the air inside the linear motor to reduce the temperature inside the linear motor, and the secondary component keeps the air entering the heat dissipation box in a low-temperature state all the time, thereby further reducing the temperature inside the linear motor and improving the heat dissipation efficiency.

[0013] Optionally, the primary heat dissipation component includes:

[0014] Base platforms, there are 2 base platforms arranged vertically, the lower ends of the 2 base platforms are fixedly arranged on the bottom wall of the heat dissipation box, wherein, the 2 base platforms are symmetrically arranged;

[0015] Metal pressing sheets, the metal pressing sheets are arranged horizontally between the 2 base platforms, there are 2 metal pressing sheets symmetrically arranged, and the two ends of the 2 metal pressing sheets are respectively fixedly arranged on the opposite sides of the 2 base platforms;

[0016] Piezoelectric ceramics, there are 2 piezoelectric ceramics, and the lower ends of the 2 piezoelectric ceramics are respectively fixedly arranged on the upper ends of the 2 metal pressing sheets.

[0017] By adopting the above technical solutions, due to the presence of the base platforms, metal pressing sheets and piezoelectric ceramics, the air in the high-pressure area is pushed towards the spray port direction, thus forming a working cycle of jetting and suction, and further realizing the air exchange inside the motor and improving the motor heat dissipation efficiency.

[0018] Optionally, the secondary heat dissipation component includes:

[0019] Liquid circulation pump, the lower end of the liquid circulation pump is fixedly connected to the upper end of the heat dissipation box;

[0020] Connecting rod, one end of the connecting rod is fixedly connected to the upper end of the mover and the other end is fixedly connected to one side of the liquid circulation pump;

[0021] Fan, the fan is rotatably arranged on one side of the connecting rod close to the air outlet through a rotating shaft;

[0022] Water pipe, the water pipe is fixedly arranged around the air inlet, one end of the water pipe is communicated with one side of the liquid circulation pump and the other end is communicated with the other side of the liquid circulation pump.

[0023] Fitting, the fitting connects the fan and the liquid circulation pump.

[0024] By adopting the above technical solution, when the primary heat dissipation component is activated, the hot air in the heat dissipation box is discharged from the air outlet. Then, the hot air discharged from the air outlet drives the fan to rotate. When the fan rotates, it drives the cooperating component to work, thereby turning on the liquid circulation pump, enabling the water in the water pipe to circulate, and further reducing the temperature in the water pipe and the temperature of the air inlet.

[0025] Optionally, the cooperating component includes:

[0026] A fixed block, one end of which is fixedly provided on the side of the fan blade of the fan close to the air outlet;

[0027] A switch, which is arranged on the side of the liquid circulation pump close to the connecting rod, and the switch is electrically connected to the liquid circulation pump;

[0028] A pull rope, one end of which is fixedly connected to the fixed block and the other end is fixedly connected to the switch.

[0029] By adopting the above technical solution, the existence of the fixed block, the pull rope and the switch enables the fixed block to rotate with the fan when the fan rotates, thereby driving the pull rope to open the switch, which is convenient and fast.

[0030] Optionally, a filter screen is provided on the heat dissipation box.

[0031] By adopting the above technical solution, the existence of the filter screen reduces the entry of impurities in the air into the linear motor.

[0032] Optionally, a plurality of primary heat dissipation components are provided.

[0033] By adopting the above technical solution, providing a plurality of primary heat dissipation components increases the air exchange capacity of the linear motor and improves the heat dissipation efficiency of the linear motor.

[0034] Optionally, the lower end of the heat dissipation box is a metal plate.

[0035] By adopting the above technical solution, the lower end of the heat dissipation box being a metal plate can increase the thermal conductivity.

[0036] In summary, the embodiment of the present invention provides a linear motor heat dissipation structure based on a heat pipe, including at least one of the following beneficial technical effects:

[0037] 1. The existence of the heat pipe enables the heat energy in the linear motor to be conducted through the heat pipe. The existence of the heat dissipation box increases the heat dissipation performance of the linear motor. The primary heat dissipation component exchanges the air inside the linear motor to reduce the temperature inside the linear motor. The secondary component keeps the air entering the heat dissipation box at a low temperature state all the time, thereby further reducing the temperature inside the linear motor and improving the heat dissipation efficiency.

[0038] 2. The presence of the base, metal pressing piece, and piezoelectric ceramic pushes the air in the high-pressure area towards the nozzle direction, thereby forming a working cycle of jetting and suction, and then realizing the air exchange inside the motor, improving the heat dissipation efficiency of the motor. Description of the Drawings

[0039] Figure 1 It is a schematic structural diagram of a linear motor heat dissipation structure based on a heat pipe provided by an embodiment of the present invention;

[0040] Figure 2 It is an exploded view of a linear motor heat dissipation structure based on a heat pipe provided by an embodiment of the present invention;

[0041] Figure 3 It is a sectional view of a linear motor heat dissipation structure based on a heat pipe provided by an embodiment of the present invention.

[0042] Explanation of the markings in the figure:

[0043] 11, stator; 12, mover; 13, placement groove; 14, heat pipe; 15, heat dissipation box; 21, air outlet; 22, air inlet; 23, nozzle; 24, filter screen; 3, primary heat dissipation component; 31, base; 32, metal pressing piece; 33, piezoelectric ceramic; 4, secondary heat dissipation component; 41, liquid circulation pump; 42, connecting rod; 43, fan; 44, water pipe; 5, fitting; 51, fixing block; 52, switch; 53, pull rope. Detailed Embodiment

[0044] The following further elaborates on the present application Figures 1 - 3 in detail with reference to the accompanying drawings.

[0045] Combined with Figure 1 , Figure 2 and Figure 3 , an embodiment of the present application discloses a linear motor heat dissipation structure based on a heat pipe, including: a stator 11 and a mover 12 slidably arranged on the stator 11. A placement groove 13 is arranged on the mover 12. It further includes: a heat pipe 14, a heat dissipation box 15, a primary heat dissipation component 3, and a secondary heat dissipation component 4. The heat pipe 14 is fixedly arranged on the bottom wall of the placement groove 13; the heat dissipation box 15 is located above the heat pipe 14 and is fixedly arranged in the placement groove 13. There is a gap between the lower end of the heat dissipation box 15 and the heat pipe 14; the primary heat dissipation component 3 is arranged in the heat dissipation box 15 for realizing gas exchange in the heat dissipation box 15; the secondary heat dissipation component 4 is arranged on one side of the primary heat dissipation component 3 for enhancing the heat dissipation efficiency of the primary heat dissipation component 3; wherein, an air outlet 21 is arranged on one side of the heat dissipation box 15, a nozzle 23 is arranged on the bottom wall of the heat dissipation box 15, an air inlet 22 is arranged on the upper end of the heat dissipation box 15, the lower end of the heat dissipation box 15 is a metal plate, multiple primary heat dissipation components 3 are arranged, and a filter screen 24 is arranged on the heat dissipation box 15.

[0046] In the embodiment of the present application, the placement groove 13 is square-shaped, the heat pipe 14 is square-shaped, and the square shape of the heat pipe 14 can increase the heat dissipation of the motor. The heat dissipation box 15 is square-shaped. It should be noted that the specification of the heat dissipation box 15 is smaller than that of the placement groove 13. The air outlet 21 on one side of the heat dissipation box 15 is rectangular-shaped. There is a gap between the air outlet 21 on one side of the heat dissipation box 15 and one side of the placement groove 13, and there is a gap between the air outlet 21 on the bottom wall of the heat dissipation box 15 and the heat pipe 14. The size of the gap is specifically set according to the specific usage situation. During specific use, when the motor operates, the first-stage heat dissipation component 3 is started, so that the first-stage heat dissipation component 3 conveys the external cold air to the inside of the motor through the air inlet 22 and the nozzle 23. At the same time, the heat energy generated by the movement of the rotor 12 is transferred through the heat pipe 14 and finally discharged through the air outlet 21. The hot air discharged from the air outlet 21 on one side of the heat dissipation box 15 will drive the second-stage heat dissipation component 4 to cool the inside of the motor, thereby improving the heat dissipation efficiency of the motor and further increasing the service life of the motor.

[0047] Combined with Figure 1 、 Figure 2 and Figure 3 In a specific embodiment, the first-stage heat dissipation component 3 includes: a base 31, a metal sheet 32, and a piezoelectric ceramic 33. There are 2 vertically arranged bases 31, and the lower ends of the 2 bases 31 are fixedly arranged on the bottom wall of the heat dissipation box 15. Among them, the 2 bases 31 are symmetrically arranged; the metal sheet 32 is horizontally arranged between the 2 bases 31, and there are 2 symmetrically arranged metal sheets 32. The two ends of the 2 metal sheets 32 are respectively fixedly arranged on the opposite sides of the 2 bases 31; there are 2 piezoelectric ceramics 33, and the lower ends of the 2 piezoelectric ceramics 33 are respectively fixedly arranged on the upper ends of the 2 metal sheets 32. Among them, a nozzle 23 is arranged on the bottom wall of the heat dissipation box 15, and the metal sheet 32 at the lower end closes the nozzle 23 in the power-off state.

[0048] In the embodiment of the present application, the base 31 is rectangular-shaped. Among them, the base 31 and the heat dissipation box 15 can be fixedly connected by bonding or bolting, or can be integrally formed. Specifically, no excessive limitation is made. The metal sheet 32 is long and hairpin-shaped. Among them, the length of the metal sheet 32 needs to meet the requirement of connecting the 2 bases 31. The base 31 and the metal sheet 32 are electrically connected. It should be noted that the 2 metal sheets 32 are arranged parallel to each other up and down. The metal sheet 32 on the upper side is connected to an alternating voltage, and the metal sheet 32 on the lower side is connected to a pulsed unidirectional voltage. The 2 piezoelectric ceramics 33 are respectively fixedly arranged at the central positions of the 2 metal sheets 32. Among them, a conductive coating is applied to the surface of the piezoelectric ceramic 33 or a metal film is plated, so that the piezoelectric ceramic 33 has the ability to conduct electricity. There is a nozzle 23 between every 2 bases 31, and the specification of the nozzle 23 only needs to meet the requirement that the metal sheet 32 can close it.

[0049] In actual use, when the motor is running, both of the two metal pressing sheets 32 are electrified. Then, the piezoelectric ceramic 33 will generate a voltage due to the action of mechanical force. The principle is that the piezoelectric ceramic 33 has the piezoelectric effect, that is, when it is subjected to external pressure or stress, charges or voltages will be generated on its surface. When voltages are applied to both the upper and lower surfaces of the two piezoelectric ceramics 33, the upper piezoelectric ceramic 33 will drive the upper metal pressing sheet 32 to bend downward, and the lower piezoelectric ceramic 33 will drive the lower metal pressing sheet 32 to bend upward. Then, the voltage applied to the upper piezoelectric ceramic 33 is reversed, so that the upper metal pressing sheet 32 starts to deform in the reverse direction under the drive of the piezoelectric ceramic 33, and at the same time the metal sheet arches upward, and the lower piezoelectric ceramic 33 is powered off, so that the lower piezoelectric ceramic 33 drives the lower metal pressing sheet 32 to return to its normal shape. Therefore, when the upper metal pressing sheet 32 is connected to an alternating voltage and the lower metal pressing sheet 32 is connected to a pulsed single-phase voltage, the two metal pressing sheets 32 will periodically and synchronously deform in the reverse direction. Among them, when the upper metal sheet bends downward, it will push the air to increase the static pressure near the nozzle 23, forming an air flow ejected from the nozzle 23. At the same time, the upper space continuously expands, the air pressure decreases, and air is inhaled from the air inlet 22 to fill it. Then, the voltage applied to the upper piezoelectric ceramic 33 is reversed, so that the upper metal pressing sheet 32 arches upward, creating a high-pressure area in the upper space of the heat dissipation box 15 and a low-pressure area in the lower part. At the same time, the lower metal pressing sheet 32 is powered off to close the nozzle 23, and air cannot be inhaled from the nozzle 23. Therefore, the air in the high-pressure area is pushed toward the nozzle 23, thus forming a working cycle of jetting and inhaling, and further realizing the air exchange inside the motor and improving the heat dissipation efficiency of the motor.

[0050] Combined with Figure 1 、 Figure 2 and Figure 3 In a specific embodiment, the secondary heat dissipation assembly 4 includes: a liquid circulation pump 41, a connecting rod 42, a fan 43, a water pipe 44, and a fitting 5. The lower end of the liquid circulation pump 41 is fixedly arranged and fixedly connected to the upper end of the heat dissipation box 15; one end of the connecting rod 42 is fixedly connected to the upper end of the rotor 12, and the other end is fixedly connected to one side of the liquid circulation pump 41; the fan 43 is rotatably arranged on one side of the connecting rod 42 close to the air outlet 21 through a rotating shaft; the water pipe 44 is fixedly arranged on the periphery of the air inlet 22, one end of the water pipe 44 is communicated with one side of the liquid circulation pump 41, and the other end is communicated with the other side of the liquid circulation pump 41; the fitting 5 connects the fan 43 and the liquid circulation pump 41.

[0051] In the embodiment of the present application, the connecting rod 42 is arranged in an L shape, wherein the horizontal part of the connecting rod 42 is fixedly connected to the liquid circulation pump 41, and a fan 43 is rotatably arranged at the lower end of the vertical part of the connecting rod 42. The water pipe 44 is a plastic pipe, which can be, but is not limited to, a PVC water pipe 44, a PPR water pipe 44, and a PE water pipe 44; the liquid circulation pump 41 is arranged at the upper end of the heat dissipation box 15, and a water tank is connected to the lower end of the liquid circulation pump 41. Both ends of the water pipe 44 are connected to the water tank. When in specific use, when the primary heat dissipation component 3 is started, the hot air in the heat dissipation box 15 is discharged from the air outlet 21, and then the hot air discharged from the air outlet 21 drives the fan 43 to rotate. When the fan 43 rotates, it drives the cooperating member 5 to work, thereby turning on the liquid circulation pump 41, enabling the water in the water pipe 44 to circulate, and further making the temperature in the water pipe 44 lower, reducing the temperature of the air inlet 22.

[0052] Combined with Figure 1 、 Figure 2 and Figure 3 , in a specific embodiment, the cooperating member 5 includes: a fixed block 51, a switch 52, and a pull rope 53. One end of the fixed block 51 is fixedly arranged on the side of the fan blade of the fan 43 close to the air outlet 21; the switch 52 is arranged on the side of the liquid circulation pump 41 close to the connecting rod 42, and the switch 52 is electrically connected to the liquid circulation pump 41; one end of the pull rope 53 is fixedly connected to the fixed block 51 and the other end is fixedly connected to the switch 52.

[0053] In the embodiment of the present application, the fixed block 51 is arranged in a square shape and is fixedly connected to one of the fan blades of the fan 43. The fixed block 51 and the fan blade can be integrally formed or fixed by bonding or bolting. The embodiment of the present application does not make specific limitations; the pull rope 53 can be an elastic rope or a nylon rope, which is set according to specific usage conditions. The embodiment of the present application does not make specific limitations. When the fan 43 rotates during specific use, the fan blade rotates, thereby pulling the pull rope 53, causing the pull rope 53 to turn on the switch 52 of the liquid circulation pump 41, enabling the water in the water pipe 44 to circulate, keeping the water in the water pipe 44 always cold, thereby reducing the air around the water pipe 44, and further making the air entering the heat dissipation box 15 cold air, improving the efficiency of reducing the temperature inside the motor.

[0054] The implementation principle of the embodiment of the present application is as follows: When the motor operates, both of the two metal pressing sheets 32 are electrified. Then, the piezoelectric ceramic 33 will generate a voltage due to the action of mechanical force. Connect the upper metal pressing sheet 32 to an alternating voltage and the lower metal pressing sheet 32 to a pulsed single-phase voltage. The two metal pressing sheets 32 will undergo periodic synchronous reverse deformation. When the upper metal sheet bends downward, it will push the air to increase the static pressure near the nozzle 23, forming an air flow ejected from the nozzle 23. At the same time, the upper space continuously expands, the air pressure decreases, and air is inhaled from the air inlet 22 to fill it. Then, reverse the voltage of the upper piezoelectric ceramic 33, causing the upper metal pressing sheet 32 to arch upward, creating a high-pressure area in the upper space of the heat dissipation box 15 and a low-pressure area in the lower part. At the same time, the lower metal pressing sheet 32 is powered off to close the nozzle 23, and air cannot be inhaled from the nozzle 23. Therefore, the air in the high-pressure area is pushed towards the nozzle 23 direction, thus forming a working cycle of jetting and inhaling, and further realizing the air exchange inside the motor, improving the heat dissipation efficiency of the motor. Then, since the hot air in the heat dissipation box 15 is discharged from the air outlet 21, the hot air discharged from the air outlet 21 will drive the fan 43 to rotate. When the fan 43 rotates, it drives the cooperating member 5 to work, thereby opening the liquid circulation pump 41, enabling the water in the water pipe 44 to circulate, and further making the temperature of the water in the water pipe 44 lower, reducing the temperature of the air inlet 22.

[0055] This specific embodiment is only an interpretation of the present application and does not limit the present application. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A linear motor heat dissipation structure based on a temperature equalizing plate, comprising a stator (11) and a mover (12) slidably arranged on the stator (11), wherein a placement groove (13) is arranged on the mover (12), characterized in that: Also includes: A temperature balancing plate (14), the temperature balancing plate (14) being fixedly arranged in the placement groove (13); A heat sink (15), the heat sink (15) being located at the upper end of the temperature averaging plate (14), the heat sink (15) being fixed in the placement groove (13), and a gap being formed between the lower end of the heat sink (15) and the temperature averaging plate (14); A primary heat dissipation component (3), the primary heat dissipation component (3) being arranged in the heat dissipation box (15) and being used to realize gas exchange in the heat dissipation box (15); A secondary heat dissipation component (4), the secondary heat dissipation component (4) being arranged on one side of the primary heat dissipation component (3) and being used to enhance the heat dissipation performance of the primary heat dissipation component (3); Wherein, an air outlet (21) is provided on one side of the heat dissipation box (15), a nozzle (23) is provided on the bottom wall of the heat dissipation box (15), and an air inlet (22) is provided at the upper end of the heat dissipation box (15); The primary heat dissipation component (3) comprises: A base (31), wherein two bases (31) are vertically arranged, and the lower ends of the two bases (31) are fixed to the bottom wall of the heat dissipation box (15), wherein the two bases (31) are symmetrically arranged; A metal pressing sheet (32), the metal pressing sheet (32) being laterally arranged between the two bases (31), two metal pressing sheets (32) being symmetrically arranged, and two ends of the two metal pressing sheets (32) being respectively fixed on opposite sides of the two bases (31); Piezoelectric ceramics (33), wherein two piezoelectric ceramics (33) are provided, and the lower ends of the two piezoelectric ceramics (33) are respectively fixed to the upper ends of the two metal pressing sheets (32).

2. According to claim 1, a linear motor heat dissipation structure based on a temperature homogenizing plate is characterized in that: The secondary heat dissipation component (4) comprises: a liquid circulation pump (41), the lower end of the liquid circulation pump (41) being fixedly connected to the upper end of the heat dissipation box (15); a connecting rod (42), one end of the connecting rod (42) being fixedly connected to the upper end of the mover (12), and the other end of the connecting rod (42) being fixedly connected to one side of the liquid circulation pump (41); A fan (43), the fan (43) being rotatably arranged on a side of the connecting rod (42) close to the air outlet (21) via a rotating shaft; A water pipe (44), the water pipe (44) being fixedly arranged on the periphery of the air inlet (22), one end of the water pipe (44) being connected to one side of the liquid circulation pump (41), and the other end of the water pipe (44) being connected to the other side of the liquid circulation pump (41); A matching piece (5), wherein the matching piece (5) connects the fan (43) with the liquid circulation pump (41).

3. According to claim 2, a linear motor heat dissipation structure based on a temperature homogenizing plate is characterized in that: The matching piece (5) comprises: A fixing block (51), one end of the fixing block (51) being fixedly mounted on a side of a blade of the fan (43) close to the air outlet (21); A switch (52), the switch (52) being arranged on a side of the liquid circulation pump (41) close to the connecting rod (42), the switch (52) being electrically connected to the liquid circulation pump (41); A pull rope (53), one end of the pull rope (53) is fixedly connected to the fixed block (51), and the other end of the pull rope (53) is fixedly connected to the switch (52).

4. The linear motor heat dissipation structure based on a temperature homogenizing plate according to claim 1, characterized in that: The heat dissipation box (15) is provided with a filter screen (24).

5. The linear motor heat dissipation structure based on a temperature homogenizing plate according to claim 1, characterized in that: The first-level heat dissipation components (3) are provided in plurality.

6. The linear motor heat dissipation structure based on a temperature homogenizing plate according to claim 1, characterized in that: The lower end of the heat dissipation box (15) is a metal plate.

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