A thermal management device for laser

Abstract

The present invention discloses a thermal management device for a laser, comprising an axial laser body, the outer side of the laser body being detachably covered with a thermal management part, the thermal management part comprising a sleeve having a cavity inside, the outer side of the sleeve respectively having a liquid inlet and a liquid outlet for replacing the coolant in the cavity; the thermal management part also comprises a plurality of pressure plates installed in the sleeve cavity, the outer side of the sleeve is provided with a pressure component for applying pressure to the pressure plate and a support part for supporting the pressure component; the pressure component applies pressure to the outer side of the sleeve, so that the pressure plate is squeezed inwardly, so that the inner wall of the sleeve is fitted with the outer wall of the laser body. The present invention makes the inner side of the sleeve contact with the laser body as much as possible by tightening the fastening bolts, increases the thermal conductivity, expands the deformation groove 1 on the outer side of the sleeve, and compresses the deformation groove 2 on the inner side, so as to be surrounded into a tubular shape.

Description

Technical Field

[0001] The invention relates to the technical field of laser equipment, and in particular to a thermal management device for a laser. Background Art

[0002] A laser is a device that produces laser light. The laser light it emits is highly directional, monochromatic, and coherent, which makes it widely used in many fields. Lasers can be used for a variety of material processing applications such as cutting, welding, drilling, and marking. For example, in the automotive, electronics, semiconductor, and aerospace industries, lasers are used in precision manufacturing and production lines. Using laser beams to permanently mark the surface of various materials has the advantages of fast marking speed, high precision, and low cost.

[0003] The main function of the laser thermal management device is to effectively dissipate heat and control temperature, ensuring that the heat generated by the laser during operation can be discharged in time to avoid excessive temperature causing the laser to degrade or damage its performance. At the same time, the thermal management device can also provide a stable temperature environment and improve the stability and reliability of the laser. Among them, the most common is the coolant flow channel heat dissipation device, which removes heat by flowing the coolant through the flow channel to achieve the heat dissipation effect. This device has the advantages of good heat dissipation effect and small footprint. However, this thermal management device also has certain problems, especially the aging and corrosion of devices caused by microchannel water cooling. Therefore, it needs to be used for a certain period of time and needs subsequent maintenance or replacement. For lasers of different functions or different brands, their shapes and sizes are also inconsistent, but most of them are columnar, and replacing the thermal management device requires the original removal, but some lasers have protruding or concave shapes, and cannot cooperate with some thermal management devices. Even if they can cooperate, there is a gap between the laser and the thermal management device. Based on this problem, improvements are proposed to the thermal management device. Summary of the invention

[0004] The object of the present invention is to provide a thermal management device for a laser to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a thermal management device for a laser, comprising an axial laser body, the outer side of the laser body being detachably covered with a thermal management part, the thermal management part comprising a sleeve having a cavity inside, the outer side of the sleeve respectively having a liquid inlet and a liquid outlet for replacing a coolant in the cavity;

[0006] The heat management part further comprises a plurality of pressure plates installed in the sleeve cavity, and a pressure component for applying pressure to the pressure plate and a support part for supporting the pressure component are provided on the outer side of the sleeve;

[0007] The pressure-applying component applies pressure to the outer side of the sleeve, so that the pressure-applying plate is pressed inwardly, thereby achieving the inner wall of the sleeve being fitted with the outer wall of the laser body.

[0008] Furthermore, the sleeve is made of a metal material that can expand when subjected to force.

[0009] Furthermore, a partition groove for adjusting the diameter of the sleeve is formed on the outer side of the sleeve, the two ends of the sleeve are closed, and the two ends of the sleeve are respectively formed with extended edges extending outward, and replaceable fastening bolts are threadedly connected to the extended edges on both sides.

[0010] Furthermore, the outer wall and the inner wall of the sleeve are respectively provided with a vertical deformation groove 1 and a vertical deformation groove 2.

[0011] Furthermore, the pressure plate is fan-shaped as a whole, and several pieces of the pressure plates are evenly distributed in the sleeve cavity. Both sides of the pressure plate are arc-shaped, and the outer side of the arc is fixed to the outer inner wall of the sleeve cavity. The inner arc surface of the pressure plate faces the axis of the sleeve and has a gap with the inner wall of the sleeve cavity. The pressure plate is perpendicular to the axis of the sleeve.

[0012] Furthermore, the pressure plate is provided with a dividing groove extending horizontally outward, and an outer extension line of the dividing groove coincides with a deformation groove;

[0013] The inner arc-shaped portion of the pressure plate is a protruding edge, and the curvature radius of the protruding edge is smaller than the curvature radius of the inner wall of the inner side of the sleeve cavity.

[0014] Furthermore, the support portion is a C-shaped frame, and the upper and lower ends of the C-shaped frame are respectively fixed to the upper and lower sides of the sleeve;

[0015] The pressure component includes a sliding frame, a threaded tube, a back plate and a pressure bolt. The sliding frame is slidably installed on the C-shaped frame, the threaded tube is fixed to the sliding frame, the back plate contacts the outer wall of the sleeve, the pressure bolt passes through the threaded tube and is threadedly connected, the pressure bolt is rotatably connected to the back plate, and the pressure bolt is rotated to drive the back plate to squeeze the outer wall of the sleeve.

[0016] Furthermore, the C-shaped frame is made of metal and can produce arc-shaped deformation.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0018] 1. Tighten the fastening bolts to make the inner side of the sleeve contact with the laser body as much as possible to increase thermal conductivity. The deformation groove 1 on the outer side of the sleeve expands and the deformation groove 2 on the inner side compresses to facilitate wrapping into a tubular shape.

[0019] 2. The pressure component can slide along the C-shaped frame to drive the pressure plates at different positions to move, so that the inner side of the sleeve fits relatively with the laser body to increase thermal conductivity.

[0020] 3. The curvature radius of the protruding edge is smaller than the curvature radius of the inner wall of the sleeve cavity. The protruding edge fits the inner wall of the sleeve cavity. The protruding edge will be squeezed to open, so that the force on the dividing groove can be reduced and the stress can be dispersed.

[0021] 4. When the sleeve is deformed, its height will change, and the C-shaped frame will also be forced to change in an outward arc shape, ensuring that the sleeve can deform and fit the laser body to increase thermal conductivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the thermal management part of the present invention;

[0025] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the thermal management part of the present invention;

[0026] Figure 4 It is a schematic diagram of the internal structure of the casing of the present invention from a top view;

[0027] Figure 5 The present invention Figure 4 A is a schematic diagram of the partially enlarged structure of the middle part;

[0028] Figure 6 It is a schematic diagram of the separation structure of the support part of the present invention;

[0029] Figure 7 The present invention Figure 6 A schematic diagram of the partially enlarged structure of B in the middle;

[0030] Figure 8 It is a schematic diagram of the half-section plan structure of the thermal management part of the present invention.

[0031] In the figure: 1. laser body; 2. thermal management part; 21. sleeve; 211. deformation groove 1; 212. deformation groove 2; 22. liquid inlet; 23. liquid outlet; 24. partition groove; 25. extension edge; 26. fastening bolt; 27. pressure plate; 271. dividing groove; 272. protruding edge; 28. support part; 281. C-shaped frame; 29. ​​pressure component; 291. slide frame; 292. threaded tube; 293. abutment plate; 294. pressure bolt. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figure 1-Figure 8 The present invention provides a technical solution: the laser needs to work in a stable temperature environment to ensure the stability of its performance and output. The thermal management device takes away the heat inside the laser to keep it within a suitable temperature range. This helps to reduce performance fluctuations caused by temperature changes, thereby improving the stability of the laser. At the same time, the laser body 1 is prone to aging and damage of parts at high temperatures, which will greatly shorten its service life. The thermal management device can slow down the aging of parts by effectively reducing the operating temperature of the laser, thereby extending the service life of the laser. Based on this, a thermal management device for a laser is proposed, comprising an axial laser body 1, the outer side of the laser body 1 is detachably covered with a thermal management part 2, the thermal management part 2 comprises a sleeve 21 having a cavity inside, the outer side of the sleeve 21 respectively has a liquid inlet 22 and a liquid outlet 23 for replacing the coolant in the cavity, wherein the cavity of the sleeve 21 is used to hold the coolant, and the coolant can move from the liquid inlet 22 and the liquid outlet 23, and is used to circulate and replace the coolant, wherein the coolant in and out of the liquid inlet 22 and the liquid outlet 23 circulates and dissipates heat, which is the current structure, and will not be described in detail here;

[0034] like Figure 3 As shown, the heat management unit 2 further includes a plurality of pressure plates 27 installed in the cavity of the sleeve 21. A pressure component 29 for applying pressure to the pressure plate 27 and a support portion 28 for supporting the pressure component 29 are provided on the outer side of the sleeve 21. The pressure component 29 is supported by the support portion 28 so that the pressure component 29 applies pressure to the sleeve 21, so that the inner side of the sleeve 21 is fitted with the laser body 1.

[0035] The pressure-applying component 29 applies pressure to the outer side of the sleeve 21 , so that the pressure-applying plate 27 is pressed inward, thereby achieving the inner wall of the sleeve 21 being fitted with the outer wall of the laser body 1 .

[0036] The sleeve 21 is a metal material that can be extended when subjected to force. The sleeve 21 can be deformed when subjected to force and will not break after deformation. The material of the metal is copper or aluminum.

[0037] A partition groove 24 for adjusting the diameter of the sleeve 21 is formed on the outside of the sleeve 21. The two ends of the sleeve 21 are closed, and the two ends of the sleeve 21 are respectively formed with extended edges 25 extending outward. Replaceable fastening bolts 26 are threadedly connected on the extended edges 25 on both sides. The fastening bolts 26 can be replaced into an arc shape according to actual conditions, so that the fastening bolts 26 pass through the extended edges 25 on both sides, and the size of the partition groove 24 can be adjusted to facilitate matching with laser bodies 1 of different diameters.

[0038] like Figure 4 and Figure 5 The figure shows the cross-sectional shape of the sleeve 21. The outer wall and the inner wall of the sleeve 21 are respectively provided with a vertical deformation groove 1 211 and a deformation groove 212 for reducing the stress after deformation. The sleeve 21 is in a circular ring shape. The outer and inner deformation grooves 1 211 and 212 can be deformed to expand or compress, so that the sleeve 21 can adjust its diameter.

[0039] like Figure 5 As shown, the pressure plate 27 is fan-shaped as a whole, and several pressure plates 27 are evenly distributed in the cavity of the sleeve 21. Both sides of the pressure plate 27 are arc-shaped, and the outer side of the arc is fixed to the outer inner wall of the cavity of the sleeve 21. The inner arc surface of the pressure plate 27 faces the axis of the sleeve 21 and has a gap with the inner wall of the cavity of the sleeve 21. The pressure plate 27 is perpendicular to the axis of the sleeve 21. The pressure plate 27 is used to support the cavity of the sleeve 21 so that the cavity is relatively maintained after the sleeve 21 is deformed to avoid blockage. In addition, the inner arc surface of the pressure plate 27 faces the axis of the sleeve 21 and has a gap with the inner wall of the cavity of the sleeve 21. In order to avoid affecting the change of the arc diameter of the sleeve 21 in the previous step and to avoid the internal being supported and difficult to deform.

[0040] The pressure plate 27 is provided with a dividing groove 271 extending horizontally outward, and the outer extension line of the dividing groove 271 coincides with the deformation groove 1 211. When the diameter of the sleeve 21 is deformed, the size of the outer deformation groove 1 211 changes, and the position where the change occurs is the outer side of the dividing groove 271, so that the stress transferred to the pressure plate 27 can be reduced, so that it can be kept in a horizontal state, avoiding tilting or other shape changes;

[0041] The inner arc-shaped portion of the pressure plate 27 is a protruding edge 272, and the curvature radius of the protruding edge 272 is smaller than the curvature radius of the inner wall of the cavity of the sleeve 21. The protruding edge 272 of the pressure plate 27 is squeezed against the inner wall of the cavity of the sleeve 21 to make it fit with the laser body 1. Furthermore, the protruding edge 272 produces expansion deformation to ensure that the sleeve 21 fits with the laser body 1, and the stress generated by the deformation is transmitted to the dividing groove 271 to reduce the stress as much as possible.

[0042] It should be noted that the pressure plate 27 is horizontal, and the protruding or recessed position of the laser body 1 is generally in a ring shape, which can ensure that the squeezed sleeve 21 fits closely with the laser body 1 .

[0043] like Figure 6 and Figure 7 As shown, the support portion 28 is a C-shaped frame 281, and the upper and lower ends of the C-shaped frame 281 are respectively fixed to the upper and lower sides of the sleeve 21;

[0044] The pressure component 29 includes a sliding frame 291, a threaded tube 292, a support plate 293 and a pressure bolt 294. The sliding frame 291 is slidably installed on the C-shaped frame 281, the threaded tube 292 is fixed to the sliding frame 291, the support plate 293 contacts the outer wall of the sleeve 21, and the pressure bolt 294 passes through the threaded tube 292 and is threadedly connected. The pressure bolt 294 is rotatably connected to the support plate 293. The pressure bolt 294 is rotated to drive the support plate 293 to squeeze the outer wall of the sleeve 21. The pressure component 29 can slide up and down along the C-shaped frame 281 to squeeze different positions to make the inner side of the sleeve 21 fit with the laser body 1 as much as possible.

[0045] The C-shaped frame 281 is made of metal and can produce an arc-shaped deformation. When the pressure-applying component 29 squeezes the sleeve 21, it is subjected to an opposite force, causing the C-shaped frame 281 to be distributed in an arc shape outward. Therefore, even if the upper and lower ends of the C-shaped frame 281 are fixed to the upper and lower ends of the sleeve 21, no stretching force is generated, so that the height of the sleeve 21 can also be changed.

[0046] Working principle of the present invention: The components of the original thermal management device on the outside of the laser body 1 need to be replaced after aging, and some cannot directly cooperate with the laser body 1. Even if they are installed, there are still some gaps. Heat exchange is mainly achieved through heat conduction on the contact surface. However, since the contact surface is not in complete contact, the larger the gap, the smaller the contact thermal conductivity, and the worse the heat transfer effect. Therefore, it will still cause the temperature of the laser body 1 to rise rapidly, and it needs to be shut down for heat dissipation after running for a period of time.

[0047] Based on the above reasons, the laser body 1 is covered by the sleeve 21, and then the sleeve 21 and the laser body 1 are fixed by the fastening bolts 26. As the fastening bolts 26 are tightened, the inner side of the sleeve 21 is in contact with the laser body 1 as much as possible to increase thermal conductivity.

[0048] The length of the fastening bolt 26 can be changed, and the fastening bolt 26 can also be bent in an arc shape to ensure that the fastening bolt 26 penetrates the extension edges 25 on both sides, so that the fastening bolt 26 does not move and the nut is rotated to fix it.

[0049] In addition, if the inner side of the sleeve 21 is required to fit the laser body 1 of different diameters, the sleeve 21 needs to be bent into different diameters. In order to facilitate the change of the diameter, the stress needs to be dispersed, the outer deformation groove 1 211 is expanded, and the inner deformation groove 2 212 is compressed to facilitate wrapping into a tubular shape.

[0050] After the above-mentioned fixing and sleeve connection of the sleeve 21 and the laser body 1 is completed, the pressure bolt 294 is rotated to squeeze the abutment plate 293 at its end against the outer wall of the sleeve 21, so that the sleeve 21 is deformed, and the inner pressure plate 27 moves inward and squeezes the inner wall of the cavity of the sleeve 21 to produce deformation, so that the inner side of the sleeve 21 fits the outer side of the laser body 1 as closely as possible. The pressure component 29 can slide along the C-shaped frame 281 to drive the pressure plates 27 at different positions to move, so that the inner side of the sleeve 21 fits relatively with the laser body 1 to increase thermal conductivity.

[0051] In addition, it should be noted that the curvature radius of the protruding edge 272 is smaller than the curvature radius of the inner wall of the cavity of the sleeve 21. When the protruding edge 272 is squeezed against the inner wall of the cavity of the sleeve 21, the sleeve 21 fits the laser body 1. When the curvature radius of the laser body 1 is greater than the curvature radius of the protruding edge 272, the protruding edge 272 also fits against the inner wall of the cavity of the sleeve 21. The protruding edge 272 will be squeezed to open, so that the force on the dividing groove 271 can be reduced and the stress can be dispersed.

[0052] When the sleeve 21 is deformed, its height will change. At the same time, when the pressure member 29 is pressed, the C-shaped frame 281 will also be forced to change in an outward arc shape, ensuring that the sleeve 21 can be deformed to fit the laser body 1 and increase thermal conductivity.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A thermal management device for a laser, comprising an axially shaped laser body (1), characterized in that: The outer side of the laser body (1) is detachably covered with a heat management part (2), the heat management part (2) comprising a sleeve (21) having a cavity inside, the outer side of the sleeve (21) respectively having a liquid inlet (22) and a liquid outlet (23) for replacing the cooling liquid in the cavity; The heat management part (2) further comprises a plurality of pressure plates (27) installed in the cavity of the sleeve (21); a pressure component (29) for applying pressure to the pressure plate (27) and a support part (28) for supporting the pressure component (29) are provided on the outer side of the sleeve (21); The pressure-applying component (29) applies pressure to the outside of the sleeve (21), causing the pressure-applying plate (27) to press inward, thereby achieving a fit between the inner wall of the sleeve (21) and the outer wall of the laser body (1).

2. The thermal management device for a laser according to claim 1, characterized in that: The sleeve (21) is made of a metal material that can expand when subjected to force.

3. The thermal management device of a laser according to claim 1, characterized in that: The outer side of the sleeve (21) is formed with a partition groove (24) for adjusting the diameter of the sleeve (21), the two ends of the sleeve (21) are closed, and the two ends of the sleeve (21) are respectively formed with extension edges (25) extending outwards, and the extension edges (25) on both sides are threadedly connected with replaceable fastening bolts (26).

4. The thermal management device for a laser according to claim 1, characterized in that: The outer wall and inner wall of the sleeve (21) are respectively provided with a vertical deformation groove 1 (211) and a vertical deformation groove 2 (212).

5. The thermal management device for a laser according to claim 4, characterized in that: The pressure plate (27) is fan-shaped as a whole, and a plurality of the pressure plates (27) are evenly distributed in the cavity of the sleeve (21). Both sides of the pressure plate (27) are arranged in an arc shape, and the outer side of the arc is fixed to the outer inner wall of the cavity of the sleeve (21). The inner arc surface of the pressure plate (27) faces the axis of the sleeve (21) and has a gap with the inner wall of the cavity of the sleeve (21). The pressure plate (27) is perpendicular to the axis of the sleeve (21).

6. The thermal management device for a laser according to claim 5, characterized in that: The pressure plate (27) is provided with a dividing groove (271) extending horizontally outward, and an outer extension line of the dividing groove (271) coincides with the first deformation groove (211); The inner arc-shaped portion of the pressure plate (27) is a protruding edge (272), and the curvature radius of the protruding edge (272) is smaller than the curvature radius of the inner wall of the inner cavity of the sleeve (21).

7. The thermal management device for a laser according to claim 6, characterized in that: The support portion (28) is a C-shaped frame (281), and the upper and lower ends of the C-shaped frame (281) are respectively fixed to the upper and lower sides of the sleeve (21); The pressure component (29) comprises a sliding frame (291), a threaded tube (292), a support plate (293) and a pressure bolt (294); the sliding frame (291) is slidably mounted on the C-shaped frame (281); the threaded tube (292) is fixed to the sliding frame (291); the support plate (293) contacts the outer wall of the sleeve (21); the pressure bolt (294) penetrates the threaded tube (292) and is threadedly connected; the pressure bolt (294) is rotatably connected to the support plate (293); the pressure bolt (294) is rotated to drive the support plate (293) to be squeezed against the outer wall of the sleeve (21).

8. The thermal management device for a laser according to claim 7, characterized in that: The C-shaped frame (281) is made of metal and can produce an arc-shaped deformation.

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