Process for filling stainless steel heat pipe after pre-burying

Abstract

The invention relates to the technical field of heat dissipation, in particular to a stainless steel heat pipe pre-burying post-filling process which comprises the following steps: S1, preparing a stainless steel heat pipe high-performance two-phase liquid cooling plate which comprises a cold liquid plate, a mold is fixed on the cold liquid plate, and a stainless steel heat pipe pre-burying post-filling process is arranged on the mold; a heat pipe pipeline is arranged between the mold and the cold liquid plate, the heat pipe pipeline is fixed in the mold, and a liquid injection mechanism is fixed on the heat pipe pipeline and the mold together; s2, a plurality of notches are formed in the mold in a penetrating mode, a liquid medium is injected between the cold liquid plate and the mold through the multiple notches, and the heat pipe pipeline is pre-buried in the mold through a forming technology; s3, sealing and filling blocks are fixed to the multiple notches; and S4, refrigerant liquid is injected into the heat pipe pipeline through a liquid injection mechanism. When in use, the heat dissipation device has higher heat dissipation efficiency, the structure is relatively simple, the cost is relatively low, and refrigerant liquid is not easy to leak.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation, and particularly relates to a filling process after embedding a stainless steel heat pipe. Background Art

[0002] With the continuous improvement of the performance of electronic devices, the heat generated during their operation is also increasing. An efficient heat dissipation system has become the key to ensuring the stable operation of electronic devices and extending their service life. Traditional IGBT radiators mainly use air-cooled heat dissipation, with low heat dissipation efficiency, and require a large number of fans to be configured, resulting in a relatively high system noise; although some high-power IGBT systems use liquid-cooled heat dissipation, the system uses a single-phase working medium for heat dissipation, and although the efficiency has been improved, the improvement is not obvious. Generally speaking, existing traditional IGBT radiators all have the problem of low heat dissipation efficiency. In addition, there are also problems such as complex structure, high cost, and easy leakage. Therefore, a filling process after embedding a stainless steel heat pipe is needed to meet the requirements. Summary of the Invention

[0003] The purpose of the present invention is to solve the problem of low heat dissipation efficiency of IGBT radiators in the prior art, and to propose a filling process after embedding a stainless steel heat pipe.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] Design a filling process after embedding a stainless steel heat pipe, including the following steps:

[0006] S1. Prepare a high-performance two-phase liquid-cooled plate for a stainless steel heat pipe. The high-performance two-phase liquid-cooled plate for a stainless steel heat pipe includes a cold liquid plate, a mold is fixed on the cold liquid plate, a heat pipe pipeline is arranged between the mold and the cold liquid plate, the heat pipe pipeline is fixed inside the mold, and a liquid injection mechanism is jointly fixed on the heat pipe pipeline and the mold;

[0007] S2. A plurality of notches are provided through the mold, and a liquefied medium is injected between the cold liquid plate and the mold through the plurality of notches, and the heat pipe pipeline is embedded inside through a forming process;

[0008] S3. Sealing blocks are fixed on each of the plurality of notches;

[0009] S4. Inject a refrigerant liquid into the interior of the heat pipe pipeline through the liquid injection mechanism.

[0010] Preferably, the heat pipe pipeline is a stainless steel pipeline.

[0011] Preferably, the refrigerant liquid is tetrafluoroethane.

[0012] Preferably, the manufacturing steps of the heat pipe pipeline are as follows:

[0013] A1. Purchase a stainless - steel pipe. The stainless - steel pipe is made into the required shape through a bending - forming process, and then the heat - pipe pipe is obtained.

[0014] A2. The liquid - injection mechanism is fixed on the heat - pipe pipe and the mold, and the sealing performance of the interface is checked.

[0015] Preferably, the liquid - injection mechanism includes a tee joint. The tee joint is fixed on the heat - pipe pipe. A liquid - injection pipe is fixed on the tee joint. A hole is penetrated through the mold. The liquid - injection pipe is hermetically inserted into the hole. A plugging mechanism is provided on both the liquid - injection pipe and the mold.

[0016] Preferably, the plugging mechanism includes a cylinder. A fixing plate is fixed at the bottom end of the cylinder. A sealing sleeve is fixedly sleeved on both the fixing plate and the cylinder. The sealing sleeve, the fixing plate and the cylinder are inserted into the liquid - injection pipe. A positioning mechanism is fixed on the cylinder.

[0017] Preferably, the positioning mechanism includes a first connecting rope. One end of the first connecting rope is fixed on the fixing plate, and the other end is fixed with a moving plate. The moving plate is slidably inserted into the cylinder. Two second connecting ropes are fixed on the moving plate. A fixing block is fixed on each of the two second connecting ropes. Both of the two fixing blocks are arranged outside the cylinder.

[0018] Preferably, the moving plate is made of a self - lubricating plate.

[0019] Preferably, a limiting ring is fixed on the inner side wall of the end of the cylinder away from the fixing plate. Both of the two second connecting ropes penetrate through the limiting ring.

[0020] The S4 further includes S41, S42 and S43, where:

[0021] S41. After the refrigerant liquid is injected into the interior of the heat - pipe pipe, insert the fixing plate, part of the cylinder and part of the sealing sleeve into the liquid - injection pipe.

[0022] S42. On the premise of ensuring that the position of the cylinder in the liquid - injection pipe remains unchanged, pull the two fixing blocks. The two fixing blocks drive the moving plate to move in the cylinder through the two second connecting ropes until the moving plate drives the first connecting rope to be straightened.

[0023] S43. Just fix both of the two fixing blocks on the mold.

[0024] Preferably, in step S42, when the first connecting rope is straightened, the moving plate does not contact the limiting ring.

[0025] A post-embedding filling process for a stainless steel heat pipe proposed by the present invention has the beneficial effects that: when this post-embedding filling process for a stainless steel heat pipe is in use, it has a higher heat dissipation efficiency. It uses a two-phase liquid heat dissipation working medium, which absorbs heat and evaporates when heated, turning into a gas to take away the heat of the IGBT. At the same time, the special pulse structure design and high-efficiency temperature equalization ability in the cold liquid plate can accelerate the transfer and dissipation of heat. The structure is relatively simple, the cost is low, and the refrigerant liquid is not easy to leak, improving the reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is an exploded view of a post-embedding filling process for a stainless steel heat pipe proposed by the present invention;

[0027] Figure 2 is a top view of a post-embedding filling process for a stainless steel heat pipe proposed by the present invention after being installed;

[0028] Figure 3 is of a post-embedding filling process for a stainless steel heat pipe proposed by the present invention Figure 2 magnified view of part B;

[0029] Figure 4 is a structural schematic diagram of a plugging mechanism of a post-embedding filling process for a stainless steel heat pipe proposed by the present invention;

[0030] Figure 5 is of a post-embedding filling process for a stainless steel heat pipe proposed by the present invention Figure 4 magnified view of part A.

[0031] In the figures: 1, cold liquid plate; 2, heat pipe pipeline; 3, filling block; 4, tee joint; 5, plugging mechanism; 6, liquid injection pipe; 7, mold; 8, hole; 9, cylinder; 10, sealing sleeve; 11, moving plate; 12, first connecting rope; 13, second connecting rope; 14, limiting ring; 15, fixing block; 16, notch; 17, fixing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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, rather than all of the embodiments.

[0033] Embodiment 1: Referring to Figure 1 and Figure 2 , a post-embedding filling process for a stainless steel heat pipe includes the following steps:

[0034] S1. Prepare a high-performance two-phase liquid cooling plate with stainless steel heat pipes. The high-performance two-phase liquid cooling plate with stainless steel heat pipes includes a cold liquid plate 1. A mold 7 is fixed on the cold liquid plate 1. A heat pipe pipeline 2 is arranged between the mold 7 and the cold liquid plate 1. The heat pipe pipeline 2 is fixed inside the mold 7 to ensure the embedding depth and position of the heat pipe pipeline 2 inside the mold 7. A liquid injection mechanism is fixed on both the heat pipe pipeline 2 and the mold 7. The heat pipe pipeline 2 is a stainless steel pipeline. The heat pipe pipeline 2 is made of stainless steel pipeline, which can not only ensure that the material performance is not affected under high-temperature conditions, but also adapt to different installation environments.

[0035] Among them, the manufacturing steps of the heat pipe pipeline 2 are as follows:

[0036] A1. Purchase a stainless steel pipeline. The stainless steel pipeline is made into the required shape through a bending forming process, and then the heat pipe pipeline 2 is obtained.

[0037] A2. The liquid injection mechanism is fixed on the heat pipe pipeline 2 and the mold 7, and the tightness of the interface is checked to ensure that there is no leakage when the liquid injection mechanism is in use.

[0038] S2. A plurality of notches 16 penetrate through the mold 7. The liquefied medium is injected between the cold liquid plate 1 and the mold 7 through the plurality of notches 16, and the heat pipe pipeline 2 is embedded inside through a forming process.

[0039] S3. Sealing blocks 3 are fixed on each of the plurality of notches 16 to block the plurality of notches 16 to prevent impurities from contaminating the formed liquefied medium through the plurality of notches 16.

[0040] S4. Refrigerant liquid is injected into the heat pipe pipeline 2 through the liquid injection mechanism. The refrigerant liquid is tetrafluoroethane, which has the advantages of low boiling point and large latent heat of vaporization.

[0041] When the present invention is in use, the refrigerant liquid absorbs heat in the heating section and vaporizes into steam. The steam flows through the heat pipe pipeline 2 to the heat dissipation section. The temperature difference between the heating section and the heat dissipation section is used to promote the continuous circulation of the refrigerant liquid. Then, through the heat dissipation on the product surface and the heat exchange in the cavity flow channel of the cold liquid plate 1, the purpose of rapid temperature uniformity is achieved. It has a wide range of applications and can be applied to various electronic devices, including high-performance computers, servers, communication base station equipment, etc. At the same time, the structure is relatively simple, the cost is low, and the refrigerant liquid is not easy to leak, improving the reliability of the equipment.

[0042] Example 2: On the basis of Example 1, refer to Figures 1-5, as another preferred embodiment of the present invention, different from Embodiment 1, the liquid injection mechanism includes a three-way joint 4. The three-way joint 4 is fixed on the heat pipe pipeline 2, and a liquid injection pipe 6 is fixed on the three-way joint 4. A hole 8 is provided through the mold 7, and the liquid injection pipe 6 is hermetically inserted into the hole 8. Since the mold 7 has a thickness, the hole 8 also has a certain depth, which can meet the requirement of the embedded depth of the heat pipe pipeline 2 inside the mold 7. A plugging mechanism is provided on both the liquid injection pipe 6 and the mold 7 to block the liquid injection pipe 6, ensuring that the refrigerant liquid inside the heat pipe pipeline 2 will not leak through the liquid injection pipe 6, ensuring the fixed amount of the refrigerant liquid inside the heat pipe pipeline 2, and also ensuring the use effect of the refrigerant liquid inside the heat pipe pipeline 2.

[0043] The plugging mechanism includes a cylinder 9. A fixing plate 17 is fixed at the bottom end of the cylinder 9. A sealing sleeve 10 is fixedly sleeved on both the fixing plate 17 and the cylinder 9. The sealing sleeve 10, the fixing plate 17 and the cylinder 9 are inserted into the liquid injection pipe 6. The fixing plate 17 and the cylinder 9 ensure the shape of the sealing sleeve 10 during use, and also ensure the sealing performance between the sealing sleeve 10 and the liquid injection pipe 6 during use. A positioning mechanism is fixed on the cylinder 9. With the assistance of the positioning mechanism, the cylinder 9 can be prevented from being disengaged from the liquid injection pipe 6.

[0044] The positioning mechanism includes a first connecting rope 12. One end of the first connecting rope 12 is fixed on the fixing plate 17, and the other end is fixed with a moving plate 11. The moving plate 11 is made of a self-lubricating plate. The moving plate 11 made of a self-lubricating plate moves more smoothly in the cylinder 9. The moving plate 11 is slidably inserted into the cylinder 9. Two second connecting ropes 13 are fixed on the moving plate 11. A fixing block 15 is fixed on each second connecting rope 13. Both fixing blocks 15 are arranged outside the cylinder 9. The moving plate 11 is limited inside the cylinder 9 by the first connecting rope 12. At the same time, the positions of the two fixing blocks 15 are also limited on the moving plate 11 by the two second connecting ropes 13. A limiting ring 14 is fixed on the inner side wall of the end of the cylinder 9 away from the fixing plate 17. Both second connecting ropes 13 pass through the limiting ring 14;

[0045] Among them, in step S4, S41, S42 and S43 are also included, where:

[0046] S41. After the refrigerant liquid is injected into the heat pipe pipeline 2, the fixing plate 17, part of the cylinder 9 and part of the sealing sleeve 10 are inserted into the liquid injection pipe 6;

[0047] S42. On the premise of ensuring that the position of the cylinder 9 in the liquid injection pipe 6 remains unchanged, pull the two fixing blocks 15. The two fixing blocks 15 drive the moving plate 11 to move in the cylinder 9 through the two second connecting ropes 13 until the moving plate 11 drives the first connecting rope 12 to be straightened. When the first connecting rope 12 is straightened, the moving plate 11 does not contact the limiting ring 14. The setting of the limiting ring 14 ensures that when the first connecting rope 12 is damaged, the moving plate 11 will also be limited in the cylinder 9 by the limiting ring 14, thereby ensuring that the cylinder 9 does not come out of the liquid injection pipe 6.

[0048] S43. Fix the two fixing blocks 15 on the mold 7.

[0049] During use, after the refrigerant liquid injection is completed, first pull the two fixing blocks 15. The two fixing blocks 15 straighten the first connecting rope 12 through the two second connecting ropes 13 and the moving plate 11, that is, when the two fixing blocks 15 cannot be pulled anymore. Then insert the fixing plate 17, part of the cylinder 9 and part of the sealing sleeve 10 into the liquid injection pipe 6. Finally, when the two second connecting ropes 13 are in a straightened state, fix the two fixing blocks 15 on the mold 7. By fixing the two fixing blocks 15 on the mold 7, the fixing plate 17, part of the cylinder 9 and part of the sealing sleeve 10 are restricted in the liquid injection pipe 6, so that the fixing plate 17, part of the cylinder 9 and part of the sealing sleeve 10 inserted in the liquid injection pipe 6 do not come out of the liquid injection pipe 6.

[0050] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A post-embedding filling process for stainless steel heat pipes, characterized in that, It includes the following steps: S1. Prepare a high-performance two-phase liquid cooling plate with stainless steel heat pipes. The high-performance two-phase liquid cooling plate with stainless steel heat pipes includes a cold liquid plate (1). A mold (7) is fixed on the cold liquid plate (1). A heat pipe pipeline (2) is arranged between the mold (7) and the cold liquid plate (1). The heat pipe pipeline (2) is fixed inside the mold (7). A liquid injection mechanism is fixed on both the heat pipe pipeline (2) and the mold (7). S2. A plurality of notches (16) penetrate through the mold (7). A liquefied medium is injected between the cold liquid plate (1) and the mold (7) through the plurality of notches (16). Through a forming process, the heat pipe pipeline (2) is embedded inside. S3. Sealing blocks (3) are fixed on each of the plurality of notches (16). S4. A refrigerant liquid is injected into the interior of the heat pipe pipeline (2) through the liquid injection mechanism.

2. The stainless steel heat pipe embedding and filling process according to claim 1, characterized in that The heat pipe pipeline (2) is a stainless steel pipeline.

3. The stainless steel heat pipe embedding and filling process according to claim 1, characterized in that The refrigerant liquid is tetrafluoroethane.

4. The stainless steel heat pipe embedding and filling process according to claim 2, characterized in that, The manufacturing steps of the heat pipe pipeline (2) are as follows: A1. Purchase a stainless steel pipeline. The stainless steel pipeline is made into a required shape through a bending forming process, and thus the heat pipe pipeline (2) is obtained. A2. The liquid injection mechanism is fixed on both the heat pipe pipeline (2) and the mold (7), and the sealing performance of the interface is checked.

5. The stainless steel heat pipe embedding and filling process according to claim 4, characterized in that, The liquid injection mechanism includes a three-way joint (4). The three-way joint (4) is fixed on the heat pipe pipeline (2). A liquid injection pipe (6) is fixed on the three-way joint (4). A hole (8) penetrates through the mold (7). The liquid injection pipe (6) is hermetically inserted into the hole (8). A blocking mechanism is provided on both the liquid injection pipe (6) and the mold (7).

6. The stainless steel heat pipe embedding and filling process according to claim 5, characterized in that, The blocking mechanism includes a cylinder (9). A fixing plate (17) is fixed at the bottom end of the cylinder (9). A sealing sleeve (10) is fixedly sleeved on both the fixing plate (17) and the cylinder (9). The sealing sleeve (10), the fixing plate (17) and the cylinder (9) are inserted into the liquid injection pipe (6). A positioning mechanism is fixed on the cylinder (9).

7. The stainless steel heat pipe embedding and filling process according to claim 6, characterized in that, The positioning mechanism includes a first connecting rope (12). One end of the first connecting rope (12) is fixed on the fixing plate (17), and the other end is fixed with a moving plate (11). The moving plate (11) is slidably inserted into the cylinder (9). Two second connecting ropes (13) are fixed on the moving plate (11). A fixing block (15) is fixed on each of the two second connecting ropes (13). Both of the two fixing blocks (15) are arranged outside the cylinder (9).

8. The stainless steel heat pipe embedding and filling process according to claim 7, characterized in that, The moving plate (11) is made of a self-lubricating plate.

9. The stainless steel heat pipe embedding and filling process according to claim 7, characterized in that, A limiting ring (14) is fixed on the inner side wall of the end of the cylinder (9) far away from the fixing plate (17). Both of the two second connecting ropes (13) penetrate through the limiting ring (14). S4 further includes S41, S42 and S43, where: S41. After the refrigerant liquid is injected into the interior of the heat pipe conduit (2), insert the fixing plate (17), a part of the cylinder (9), and a part of the sealing sleeve (10) into the liquid injection pipe (6); S42. On the premise of ensuring that the position of the cylinder (9) in the liquid injection pipe (6) remains unchanged, pull the two fixing blocks (15), and the two fixing blocks (15) drive the moving plate (11) to move in the cylinder (9) through the two second connecting ropes (13) until the moving plate (11) drives the first connecting rope (12) to be straightened; S43. Fix the two fixing blocks (15) on the mold (7).

10. The stainless steel heat pipe embedding and filling process according to claim 9, characterized in that, In step S42, when the first connecting rope (12) is straightened, the moving plate (11) does not contact the limiting ring (14).

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