WO2022095118A1

WO2022095118A1 - Heat dissipation device for laser

Info

Publication number: WO2022095118A1
Application number: PCT/CN2020/129240
Authority: WO
Inventors: 张志平; 张文华; 王宁
Original assignee: 光华临港工程应用技术研发(上海)有限公司
Priority date: 2020-11-06
Filing date: 2020-11-17
Publication date: 2022-05-12
Also published as: CN112397992B; CN112397992A

Abstract

A heat dissipation device for a laser, the heat dissipation device comprising: a cold row (10), wherein the cold row (10) is provided with a frame groove (16) on the upper surface thereof, a cold pipe (18) is arranged on an inner side of the frame groove (16), and a plurality of first fans (17) are arranged inside the cold row (10); and a bottom frame (20), wherein the interior of the bottom frame (20) is a cavity, a plurality of aluminum sheets (14) are welded to the upper end of the bottom frame (20), the plurality of aluminum sheets (14) are combined into cooling fins, asbestos plates (13) are welded to the upper ends of the aluminum sheets (14), and a rectangular notch is provided at the lower portion of the bottom frame (20). By means of the provided cold row (10), a cold head (30) and auxiliary structures matching the cold row and the cold head, the heat dissipation device can provide two heat dissipation structures; highly efficient heat dissipation is provided by means of water cooling, and assists air cooling for heat dissipation, such that water cooling and air cooling interact to form a two-way auxiliary cooling structure, thus the heat dissipation effect is extremely excellent, long-time use load can be met, the highly efficient heat dissipation effect can be provided, and the problem of high-temperature heat accumulation caused by using same for a long time is effectively avoided.

Description

A heat sink for laser

technical field

The invention relates to the field of auxiliary heat dissipation devices, in particular to a heat dissipation device for lasers.

Background technique

A laser is a device that emits laser light. According to the working medium, lasers can be divided into four categories: gas lasers, solid-state lasers, semiconductor lasers and dye lasers. Free electron lasers have also been developed. High-power lasers are usually pulsed output.

technical problem

When the laser is used for a long time, it will generate high temperature, which is easy to cause damage to its structure. The existing structure usually provides a simple heat dissipation structure for simple heat dissipation fins. The heat is fully dissipated, and it is easy to accumulate heat and cause damage to the internal structure.

technical solutions

The purpose of the present invention is to provide a heat dissipation device for a laser, so as to solve the above-mentioned problems in the background art.

In order to achieve the above object, the present invention provides the following technical solutions: a heat dissipation device for a laser, comprising: a cold row, a frame groove is formed on the upper surface of the cold row, and a cold pipe is formed on the inner side of the frame groove, so A plurality of first fans are arranged inside the cold row; a bottom frame, the interior of the bottom frame is a cavity, and the upper end of the bottom frame is welded with a plurality of aluminum sheets, and the plurality of the aluminum sheets are combined into heat dissipation fins , the upper end of the aluminum sheet is welded with an asbestos plate, the lower part of the base frame is provided with a rectangular notch, and both sides of the bottom of the base frame are provided with through fixing bolts; cold head, the cold head is installed on the base frame In the cavity at the bottom, the cold head includes a water tank and a copper core, the water tank is installed in the cavity of the chassis, and the copper core penetrates the bottom of the cavity of the chassis.

Wherein, both sides of the cold row are fixed with fixing frames by bolts, the bottom of the fixing frame and the bottom frame are fixedly connected by bolts, and the corners of the first fan and the corners of the cold pipes are provided with Matching thread notches.

Wherein, both sides of the cold pipe are provided with connecting pipes, the connecting pipes penetrate the outer walls on both sides of the cold discharge, wherein the connecting pipe on one side is connected with the opened water inlet pipe, and the connecting pipe on the other side is connected with the open water inlet pipe. return line connection.

Wherein, both sides of the water tank are provided with inner water pipes, one side of the water tank is fixed with a micro water pump through bolts, and one side of the micro water pump is connected to one of the water pipes through the opened connection ports. The pipes are sealed and connected, and the inner water pipe on the other side is sealed with the connection port opened on one side of the water tank. One end is communicated with the return pipe.

Wherein, the aluminum sheet and the cold row are separated by asbestos plates, the front side of the upper part of the bottom frame is provided with an air collecting hood, one side of the air collecting hood is provided with a ventilation pipe, and the inside of the bottom frame is A second fan is mounted by means of bolts.

Wherein, the upper end of the copper core is welded with a plurality of copper tubes, the upper end of the copper tube is provided with a copper plate, and the upper end of the copper plate is welded with a penetrating copper column.

Wherein, the copper tube, copper plate and copper column are all hollow structures, the copper tube penetrates the inner side of the copper plate, the copper tube communicates with the copper column, and the upper part of the copper column penetrates through a plurality of heat dissipation fins composed of aluminum sheets .

Wherein, the structure of the water tank is an O-shaped structure, the copper core is located at the center of the water tank, and the outer side of the copper core is attached to the inner wall of the water tank.

Wherein, the mouth of the lower end of the copper pipe is inserted into the connection between the copper core and the water tank.

Wherein, the top of the copper column penetrates to the lower wall of the cold row.

beneficial effect

Compared with the prior art, the beneficial effects of the present invention are:

Through the opening of the cold row, the cold head and the matching auxiliary structure, two heat dissipation structures can be provided, which can provide efficient heat dissipation through water cooling, and assist air cooling to dissipate heat. The structure has excellent heat dissipation effect, can meet the long-term use load, can provide efficient heat dissipation effect, and effectively avoid the problem of high temperature accumulation caused by long-term use.

Description of drawings

Fig. 1 is the rear view of the present invention;

Fig. 2 is the sectional view of the rear front of the present invention;

Fig. 3 is the side view of the present invention;

Fig. 4 is the sectional view of the side of the present invention;

Fig. 5 is the structural schematic diagram of the cold row of the present invention;

Fig. 6 is the structural representation of the cold head of the present invention;

FIG. 7 is a schematic structural diagram of the cold pipe of the present invention.

In Figure 1-7: 10-cold row; 11-water inlet pipe; 12-fixing frame; 13-asbestos plate; 14-aluminum sheet; 15-return pipe; 16-rack groove; 17-first fan; 18-cooling pipe; 19-connecting pipe; 20-bottom frame; 21-air collecting cover; 22-ventilation pipe; 23-fixing bolt; 24-second fan; 30-cold head; 31-water inner pipe; 32-copper pipe ; 33-copper plate; 34-copper column; 35-copper core; 36-connection port; 37-water tank; 38-miniature water pump.

BEST MODE FOR CARRYING OUT THE INVENTION

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-7, the present invention provides a technical solution: a heat dissipation device for a laser, comprising: a cold row 10, a rack groove 16 is formed on the upper surface of the cold row 10, and the rack groove 16 is A cold pipe 18 is provided on the inner side, and a plurality of first fans 17 are provided inside the cold row 10. The cold row 10 mainly conducts a water-cooled heat dissipation structure through the circulation of liquid, and dissipates heat by means of heat transfer;

The bottom frame 20, the interior of the bottom frame 20 is a cavity, the upper end of the bottom frame 20 is welded with a plurality of aluminum sheets 14, and the plurality of the aluminum sheets 14 are combined into heat dissipation fins, and the upper end of the aluminum sheets 14 is The asbestos plate 13 is welded, the lower part of the bottom frame 20 is provided with a rectangular notch, the two sides of the bottom of the bottom frame 20 are provided with penetrating fixing bolts 23, and the heat dissipation fins formed by the aluminum sheets 14 provide air cooling and heat dissipation. structure, the main principle is also heat transfer;

The cold head 30, the cold head 30 is installed in the cavity at the bottom of the chassis 20, the cold head 30 includes a water tank 37 and a copper core 35, the water tank 37 is installed in the cavity of the chassis 20, the copper The core 35 runs through the bottom of the cavity of the chassis 20. The cold head 30 is a structure that directly contacts the heating object. The contact surface needs to be coated with heat-dissipating silicone grease to enhance the thermal conductivity. The main contact structure of this part is the copper core 35, the copper core The bottom surface of 35 is coated with heat-dissipating silicone grease and is in direct contact with the heating object.

Example 1

In summary, a water-cooled structure as described above, wherein the two sides of the cold row 10 are fixedly installed with the fixing frame 12 by bolts, and the bottom of the fixing frame 12 and the bottom frame 20 are fixedly connected by bolts, so as to provide a pair of bolts. For the fixing structure of the top cold row 10, the corners of the first fan 17 and the corners of the cold pipe 18 are provided with matching thread notches, and the cold pipe 18 and the first fan 17 are both installed on the cold row 10 by bolts. On the rack body, both sides of the cold pipe 18 are provided with connecting pipes 19, the connecting pipes 19 run through the outer walls on both sides of the cold row 10, and the connecting pipe 19 on one side is connected with the opened water inlet pipe 11, On the other side, the connecting pipe 19 is connected to the open return pipe 15, and the water tank 37 is provided with a water-passing inner pipe 31 on both sides. One side of the water pump 38 is sealedly connected with the water passage inner pipe 31 on one side through the opening connection port 36, and the water passage inner pipe 31 on the other side is sealedly connected with the connection port 36 opened on one side of the water tank 37, one of which is sealed. One end of the inner water pipe 31 on the side is communicated with the water inlet pipe 11, and one end of the inner water pipe 31 on the other side is communicated with the return pipe 15. The water source is transported by the micro water pump 38, and the cooling water inside passes through the water. The inner pipe 31 provides a communication structure for the water source, the water source enters the cold pipe 18 through the water inlet pipe 11, the fed water source is cooled by the first fan 17 in the cold pipe 18, and the cooled water source passes through the return pipe 15 and re-passes through the water inner pipe. 31 enters the interior of the water tank 37, and always takes away the heat on the surface of the copper core 35 during the circulation of the water source to perform a cooling effect.

Embodiments of the present invention

Embodiment 2

To sum up the above-mentioned air-cooling structure, the front side of the upper part of the bottom frame 20 is provided with an air-gathering cover 21, and the air-gathering cover 21 is used to gather the cold air blown out by the second fan 24 to ensure that the cold air always blows on the aluminum On the sheet 14, a ventilation pipe 22 is opened on one side of the air collecting cover 21, a second fan 24 is fixedly installed in the interior of the chassis 20 by bolts, and a plurality of copper pipes 32 are welded to the upper end of the copper core 35. The upper end of the copper tube 32 is provided with a copper plate 33, and the upper end of the copper plate 33 is welded with a copper column 34 that penetrates through. The copper tube 32, the copper plate 33 and the copper column 34 are all hollow structures, and the copper tube 32 penetrates through On the inner side of the copper plate 33, the copper tube 32 is communicated with the copper column 34. The upper part of the copper column 34 penetrates the heat dissipation fins composed of a plurality of aluminum sheets 14. The heat is transferred to the copper plate 33, passes through the copper plate 33 to the inside of the copper column 34, the copper column 34 penetrates the aluminum sheet 14, the heat circulating in the copper column 34 is dispersed to each aluminum sheet 14, and is blown out by the second fan 24. The cool wind blows on the surface of the aluminum sheet 14 through the wind collecting cover 21, and takes away the heat on the surface of the aluminum sheet 14, thereby forming a cooling effect.

Embodiment 3

To sum up, a further optimized structure combining water cooling and air cooling is provided. The cold row 10 has a direct impact and prevents the temperature of the aluminum sheet 14 from being directly transferred to the cold row 10. The structure of the water tank 37 is an O-shaped structure, and the copper core 35 is located in the center of the water tank 37. The copper core The outer side of the 35 is attached to the inner wall of the water tank 37, and the lower end of the copper pipe 32 is inserted into the connection between the copper core 35 and the water tank 37. During use, the backflow water source not only takes away the heat on the surface of the copper core 35, In addition, it takes away part of the heat transferred to the copper tube 32, which accelerates the heat transfer speed and improves the effect of the heat transfer effect. Part of the heat accumulated in the copper column 34 is small and will not affect the top cold row 10. If it is not discharged, it will generate accumulated heat, which will cause overheating in the next time for a long time.

Working principle: When in use, the water source is transported through the internal micro water pump 38. When the copper core 35 is in close contact with the emitting structure of the laser, its heat is quickly conducted to the surface of the copper core 35, and the copper tube 32 The water source inside the water inner pipe 31 takes away heat, and the water source returning through the return pipe 15 in the process will take away part of the heat transferred by the copper pipe 32, and the copper pipe 32 that loses heat will absorb heat to the surface of the copper core 35 again, which speeds up the heat. The cooling effect of the top cold row 10 takes away the heat accumulated on the top of the copper column 34, avoiding the problem of heat accumulation on the top of the copper column 34 for long-term use, the overall heat dissipation effect is extremely strong, and avoids There is a problem of heat accumulation during use.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims

A heat dissipation device for a laser, characterized in that it includes:

A cold row (10), the upper surface of the cold row (10) is provided with a rack groove (16), the inner side of the rack groove (16) is provided with a cold pipe (18), and the inside of the cold row (10) A plurality of first fans (17) are provided;

A base frame (20), the interior of the base frame (20) is a cavity, the upper end of the base frame (20) is welded with a plurality of aluminum sheets (14), and the plurality of the aluminum sheets (14) are combined to dissipate heat Fins, an asbestos plate (13) is welded on the upper end of the aluminum sheet (14), a rectangular slot is formed in the lower part of the bottom frame (20), and a penetrating hole is formed on both sides of the bottom of the bottom frame (20). fixing bolt (23);

A cold head (30), the cold head (30) is installed in the cavity at the bottom of the chassis (20), the cold head (30) includes a water tank (37) and a copper core (35), the water tank (37) ) is installed in the cavity of the base frame (20), and the copper core (35) penetrates through the bottom of the cavity of the base frame (20).
A heat dissipation device for a laser according to claim 1, further comprising:

Both sides of the cold row (10) are fixedly installed with fixing frames (12) by means of bolts, the bottom of the fixing frame (12) and the bottom frame (20) are fixedly connected by means of bolts, and the first fan ( The corners of 17) and the corners of the cold pipe (18) are provided with matching thread notches.
A heat dissipation device for a laser according to claim 1, characterized in that, further comprising:

Both sides of the cold pipe (18) are provided with connecting pipes (19), the connecting pipes (19) penetrate through the outer walls of both sides of the cold row (10), and the connecting pipe (19) on one side is connected to the opening. The water inlet pipe (11) is connected, and the connecting pipe (19) on the other side is connected with the opened return pipe (15).
A heat dissipation device for a laser according to claim 3, characterized in that, further comprising:

Both sides of the water tank (37) are provided with inner water pipes (31), one side of the water tank (37) is fixedly installed with a micro water pump (38) by means of bolts, and one side of the micro water pump (38) passes through The opened connection port (36) is sealed with the water passage inner pipe (31) on one side, and the water passage inner pipe (31) on the other side is sealed with the connection port (36) opened on one side of the water tank (37). One end of the inner water pipe (31) on one side is communicated with the water inlet pipe (11), and one end of the inner water pipe (31) on the other side is communicated with the return pipe (15).
A heat dissipation device for a laser according to claim 1, characterized in that, further comprising:

The aluminum sheet (14) and the cold row (10) are separated by an asbestos plate (13), and an air collecting hood (21) is opened on the front side of the upper part of the bottom frame (20). A ventilation pipe (22) is opened on one side of 21), and a second fan (24) is fixedly installed inside the bottom frame (20) by means of bolts.
A heat dissipation device for a laser according to claim 1, characterized in that, further comprising:

The upper end of the copper core (35) is welded with a plurality of copper tubes (32), the upper end of the copper tube (32) is provided with a copper plate (33), and the upper end of the copper plate (33) is welded with a penetrating copper column (33). 34).
A heat dissipation device for a laser according to claim 6, characterized in that, further comprising:

The copper tube (32), the copper plate (33) and the copper column (34) are all hollow structures, the copper tube (32) penetrates the inner side of the copper plate (33), and the copper tube (32) and the copper column (34) ) are connected, and the upper part of the copper column (34) penetrates through the heat dissipation fins composed of a plurality of aluminum sheets (14).
A heat dissipation device for a laser according to claim 1, characterized in that, further comprising:

The structure of the water tank (37) is an O-shaped structure, the copper core (35) is located at the center of the water tank (37), and the outer side of the copper core (35) is fitted with the inner wall of the water tank (37).
A heat dissipation device for a laser according to claim 6, characterized in that, further comprising:

The lower end of the copper pipe (32) is inserted into the connection between the copper core (35) and the water tank (37).
A heat dissipation device for a laser according to claim 6, characterized in that, further comprising:

The top end of the copper column (34) penetrates to the lower wall of the cold row (10).