Water cooling plate for electronic components and production process

Abstract

The present invention discloses a water-cooled plate for electronic components and a production process method, which belongs to electronic component heat dissipation equipment. The technical problem to be solved by the present invention is how to reduce the processing difficulty of the water-cooled plate, while ensuring the heat dissipation performance of the flow channel in the water-cooled plate and the overall sealing of the water-cooled plate, and improving the service life of the water-cooled plate. The technical scheme adopted is: its structure includes a cold plate body, one end of the cold plate body is provided with a rear end cover plate, the other end of the cold plate body is provided with a connecting plate, the two ends of the cold plate body are respectively engaged with the rear end cover plate and the connecting plate, and the two ends of the cold plate body are respectively connected to the rear end cover plate and the connecting plate by brazing; a number of coolant flow channels that are evenly arranged and parallel to each other are provided in the cold plate body, and the coolant flow channels are arranged along the length direction of the cold plate body; the two ends of the cold plate body are respectively provided with a rear end cover plate connecting boss and a connecting plate connecting boss. The present invention also discloses a production process method for a water-cooled plate for electronic components.

Description

Technical Field

[0001] The invention relates to electronic component heat dissipation equipment, in particular to an electronic component water cooling plate and a production process method. Background Art

[0002] With the development of society and the advancement of science and technology, the electronics industry and technology have made rapid progress. At the same time, electronic components generate a lot of heat during work. The heat dissipation effect of electronic components will directly affect the normal use of components, shorten the service life of components, and cause electronic equipment to fail to work properly.

[0003] The existing water-cooling plate structure is a layered assembly welding, and the flow channel of this structure is a serpentine integral flow channel, which is formed by mechanical processing, but has the disadvantages of large welding contact surface, cumbersome processing, low production efficiency, high cost, high precision of parts processing, poor heat dissipation performance of flow channel design, great impact on the sealing of the cold plate after welding, poor sealing after welding, high leakage rate, etc. Therefore, how to reduce the processing difficulty of the water-cooling plate, while ensuring the heat dissipation performance of the flow channel in the water-cooling plate and the sealing of the water-cooling plate as a whole, and improving the service life of the water-cooling plate is a problem existing in the current existing technology. Summary of the invention

[0004] The technical task of the present invention is to provide a water-cooled plate for electronic components and a production process method to solve the problem of how to reduce the processing difficulty of the water-cooled plate, while ensuring the heat dissipation performance of the flow channel in the water-cooled plate and the overall sealing of the water-cooled plate, and improving the service life of the water-cooled plate.

[0005] The technical task of the present invention is achieved in the following manner: a water-cooled plate for electronic components, comprising a cold plate body, one end of the cold plate body is provided with a rear end cover plate, the other end of the cold plate body is provided with a connecting plate, the two ends of the cold plate body are respectively engaged with the rear end cover plate and the connecting plate, and the two ends of the cold plate body are respectively connected to the rear end cover plate and the connecting plate by brazing;

[0006] A number of evenly arranged and mutually parallel refrigerant flow channels are arranged in the cold plate body, and the refrigerant flow channels are arranged along the length direction of the cold plate body; a rear end cover plate connecting boss and a connecting plate connecting boss are respectively arranged at both ends of the cold plate body, and the refrigerant flow channels penetrate the cold plate body and the rear end cover plate connecting boss and the connecting plate connecting boss located at both ends of the cold plate body, and the rear end cover plate connecting boss and the connecting plate connecting boss are respectively engaged with the rear end cover plate and the connecting plate; a partition plate card slot is arranged in the middle of the connecting plate connecting boss;

[0007] A connecting groove 1 is provided on one side of the connecting plate, and the connecting groove 1 is snap-fitted with the connecting boss of the connecting plate; a water inlet guide flow channel groove and a water outlet guide flow channel groove are provided on the bottom surface of the connecting groove 1, and a partition plate is formed between the water inlet guide flow channel groove and the water outlet guide flow channel groove, and the partition plate is snap-fitted with the partition plate slot; a refrigerant medium inlet joint is provided in the water inlet guide flow channel groove, and a refrigerant medium outlet joint is provided in the water outlet guide flow channel groove, and the channel direction of the refrigerant medium inlet joint and the refrigerant medium outlet joint is consistent with the flow direction of the refrigerant medium flow channel; the two ends of the connecting groove 1 form a stepped platform structure with the water inlet guide flow channel groove and the water outlet guide flow channel groove respectively;

[0008] A second connecting groove is provided on one side surface of the rear end cover plate, and the second connecting groove is engaged with the connecting boss of the rear end cover plate; a refrigerant medium mixing flow channel groove is provided on the bottom surface of the second connecting groove, and the refrigerant medium mixing flow channel groove is connected with the refrigerant medium flow channel; the second connecting groove and the refrigerant medium mixing flow channel groove form a stepped platform structure;

[0009] The surface of the cold plate body is provided with a mounting hole, the mounting hole is located between two adjacent refrigerant medium flow channels and the mounting hole is arranged along the thickness direction of the cold plate body and penetrates the cold plate body.

[0010] Preferably, one end of the refrigerant inlet joint is connected to the water inlet guide channel groove, and the other end extends out of a connecting plate, and the extended end of the refrigerant inlet joint is provided with an external thread;

[0011] One end of the refrigerant outlet joint is connected to the water outlet guide channel groove, and the other end extends out of a connecting plate, and the extended end of the refrigerant inlet joint is provided with an external thread;

[0012] The connecting plate, the cold medium inlet joint and the cold medium outlet joint are integrally formed.

[0013] More preferably, the water inlet guide channel groove and the water outlet guide channel groove are both long strip groove structures with arc-shaped ends;

[0014] The connecting groove 1 and the connecting groove 2 are both long groove structures with arc-shaped ends;

[0015] The rear end cover plate connecting boss and the connecting plate connecting boss are both long strip structures with arc-shaped ends.

[0016] More preferably, the bottom surface of the refrigerant medium mixing channel groove is arc-shaped to reduce the impact force of the water flow.

[0017] More preferably, the cross section of the refrigerant medium flow channel is circular.

[0018] More preferably, the cross-section of the refrigerant medium flow channel is square, and a plurality of flow channel fins are arranged on the inner side of the square refrigerant medium flow channel, and a flow channel groove is formed between two adjacent flow channel fins, which can increase the contact area with the refrigerant medium and realize the increase of the heat dissipation area. Compared with the cold plate with the same outer dimensions or the same flow channel cross-sectional area, the heat dissipation efficiency is greatly improved; the arrangement of the flow channel fins can increase the strength of the cold plate body, maximize the flow channel wall thickness, reduce the overall size of the cold plate body, reduce the weight, improve the heat dissipation performance, and reduce the cost.

[0019] Preferably, the cold plate body is formed in one piece by extrusion by an extruder.

[0020] More preferably, the extruder comprises a front end head, a guide plate and a rear end head which are arranged in sequence, a mold mounting hole is provided at the middle position of the front end head, a mold is installed in the mold mounting hole; a guide post mounting hole is provided at the middle position of the guide plate, a guide post is installed in the guide post mounting hole, an original plate placing groove is provided between one end of the guide post and the mold, the original plate placing groove is used to place the original plate aluminum rod, a cylinder is provided at the other end of the guide post, the piston rod end of the cylinder is connected to the guide post; the piston rod end of the cylinder and the guide post pass through the middle position of the rear end head;

[0021] A plurality of flow channel molds are arranged at intervals in the middle of the mold.

[0022] More preferably, the flow channel mold is cylindrical or square, and the inner side surface of the square flow channel mold is provided with a plurality of flow channel fin molds arranged at intervals, and a flow channel cavity is formed between two adjacent flow channel fin molds.

[0023] A process for producing a water cooling plate for electronic components, the steps of the method are as follows:

[0024] (1) Processing the cold plate body:

[0025] The original sheet aluminum rod is heated by a heating furnace; when the temperature reaches 400-500℃, the extruder is started, and the original sheet aluminum rod heated to the required temperature is placed between the guide column and the die. The cylinder pushes the guide column, and the original sheet aluminum rod is pushed into the die under the guidance of the guide plate. The shape of the original sheet aluminum rod is changed through the die by the extrusion force, and the original sheet aluminum rod is formed into a profile through the die; after the profile is formed, the fixed-length profile is cut into the cold plate body according to the length requirements by an automatic cutting saw, and then the cold plate body is fine-tuned for appearance straightness by a leveling and shaping machine;

[0026] The rear end cover plate connecting bosses and the connecting plate connecting bosses at both ends of the cold plate body are formed by mechanical processing;

[0027] (2) Processing connecting plate:

[0028] The connection plate and the connection groove 1, the water inlet guide channel groove and the water outlet guide channel groove are machined by mechanical processing, and the refrigerant medium inlet joint and the refrigerant medium outlet joint that penetrate the connection plate are an integrated structure with the connection plate;

[0029] (3) Processing the rear end cover:

[0030] The rear end cover plate, the second connecting groove on the rear end cover plate, and the refrigerant medium mixing flow channel groove are machined by mechanical processing;

[0031] (4) Assembly: The end face of the connecting boss of the connecting plate at one end of the cold plate body is snap-fitted with the connecting groove 1 of the connecting plate and the gap between them is filled with meltable solder. The connecting boss of the rear end cover plate at the other end of the cold plate body is snap-fitted with the connecting groove 2 of the rear end cover plate and the gap between them is filled with meltable solder. The cold plate body, the connecting plate and the rear end cover plate are fixed with a welding fixture and then brazed in a continuous nitrogen protection brazing furnace.

[0032] The water cooling plate for electronic components and the production process of the present invention have the following advantages:

[0033] (1) The coolant medium flow channel is changed from the original mechanical processing to profile sheet material, and the processing technology is changed to avoid leakage of the flow channel due to poor contact surface welding, improve the compressive strength, shorten the processing cycle, greatly reduce the processing cost, and at the same time maximize the flow channel cross-sectional area and improve the heat dissipation performance;

[0034] (ii) After the cold plate body, rear cover plate and connecting plate are assembled, they are fixed with welding fixtures and brazed in a continuous nitrogen-protected brazing furnace. Compared with existing friction welding or vacuum furnace welding processes, friction welding is more suitable for cylindrical contact welding. Vacuum furnaces are not suitable for continuous welding and have low production efficiency. Each alternating welding requires cooling and heating, which results in low production efficiency and high energy consumption. The welding defects of aluminum alloys are prominent. The continuous nitrogen-protected brazing furnace controls the temperature and chain speed accurately for brazing, which can achieve continuous welding and high production efficiency.

[0035] (III) The connecting plate and the refrigerant inlet joint and the refrigerant outlet joint are an integrated structure. The existing structure mostly adopts a separate type, and the seal is fixed by bolts and sealing rings. During use, the aging of the sealing ring and the attenuation of the tightening torque of the bolts due to the influence of the use environment will cause damage to the equipment. The present invention adopts an integrated structure to reduce the welding surface, reduce the risk of sealing leakage, and increase the overall strength;

[0036] (IV) The cold plate body adopts an extruded profile structure to maximize the cross-sectional area of ​​the flow channel. Compared with the existing product structure, the processing of the refrigerant medium flow channel basically involves mechanical boring, milling and other processing techniques on the plate or mechanical deep hole drilling techniques. In the existing processing techniques, the wall thickness of the refrigerant medium flow channel must be kept at a larger size to avoid wall thickness thinning caused by processing deviations and reduce the compressive strength. The existing processed cold plate is not suitable for arranging mounting holes on the body. If mounting holes are arranged, the distance between the flow channels will inevitably be further increased to ensure the safe wall thickness of the flow channels and the mounting holes. Compared with the flow channel processing technology of the existing cold plate, the extruded profile structure adopted in the present invention can achieve more flow channel arrangements with the same appearance and size, maximize the cross-sectional area of ​​the flow channel, make the arrangement of the mounting holes more convenient, and be lighter in weight. The flow channel is smoother and is not prone to blockage and siltation of foreign matter. At the same time, the utilization rate of raw materials is high, which can avoid the waste of refrigerant medium flow channel processing surplus materials; at the same time, the compressive strength is improved, the processing cycle is shortened, and the processing cost is greatly reduced. At the same time, the cross-sectional area of ​​the flow channel can be maximized to improve the heat dissipation performance;

[0037] (V) The channel direction of the refrigerant inlet joint and the refrigerant outlet joint is consistent with the flow direction of the refrigerant flow channel, ensuring smoother flow during water inlet and outlet, with relatively less impact on the refrigerant flow channel and the connecting plate, thereby increasing the service life of components; at the same time, the thickness direction saves installation space. The original vertical structure has large flow resistance and is prone to foreign matter accumulation, which can block the channel;

[0038] (VI) The end face of the connecting boss of the connecting plate at one end of the cold plate body is snap-fitted with the connecting groove 1 of the connecting plate, and the connecting boss of the rear end cover plate at the other end of the cold plate body is snap-fitted with the connecting groove 2 of the rear end cover plate, which changes the problem of the original layered structure with too large welding surface and high leakage rate. By changing the assembly method, the production efficiency is high. The most important thing is that the snap-fit ​​ensures the vertical and planar double-layer protection of the welding sealing surface, improves the compressive strength, shortens the processing cycle, and greatly reduces the processing cost. At the same time, it can maximize the flow channel cross-sectional area, improve the heat dissipation performance, and avoid the leakage of the coolant medium flow channel due to poor contact surface welding;

[0039] (VII) A plurality of channel fins are provided on the inner side of the square refrigerant medium flow channel, and a channel groove is formed between two adjacent channel fins 17, which can increase the contact area with the refrigerant medium and increase the heat dissipation area. Compared with the cold plate with the same outer dimensions or the same channel cross-sectional area, the heat dissipation efficiency is greatly improved; the provision of the channel fins can increase the strength of the cold plate body, maximize the channel wall thickness, reduce the overall size of the cold plate body, reduce the weight, improve the heat dissipation performance, and reduce the cost.

[0040] Therefore, the invention has the characteristics of reasonable design, simple structure, easy processing, small size, convenient use, multi-purpose, etc., and thus has good promotion and use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention is further described below in conjunction with the accompanying drawings.

[0042] Attached Figure 1 It is a schematic diagram of the three-dimensional structure of a water cooling plate for electronic components;

[0043] Attached Figure 2 This is a schematic diagram of the structure of a water cooling plate for electronic components;

[0044] Attached Figure 3 It is a cross-sectional view of a water cooling plate for electronic components;

[0045] Attached Figure 4 It is a schematic diagram of the three-dimensional structure of the cold plate body;

[0046] Attached Figure 5 is a schematic diagram of the three-dimensional structure of the rear end cover;

[0047] Attached Figure 6 is a schematic diagram of the structure of the rear end cover;

[0048] Attached Figure 7 is a schematic diagram of the three-dimensional structure of the connecting plate;

[0049] Attached Figure 8 is a structural schematic diagram of the connecting plate;

[0050] Attached Fig. 9 It is a structural schematic diagram of Example 2;

[0051] Attached Fig.10 It is a structural schematic diagram of Example 3;

[0052] Attached Fig.11 It is a structural schematic diagram of an extruder;

[0053] Attached Fig.12 Schematic diagram of the structure of the mold;

[0054] Attached Fig.13 This is a schematic diagram of the structure of Example 4.

[0055] In the figure: 1, cold plate body, 2, rear end cover plate, 3, connecting plate, 4, refrigerant medium flow channel, 5, mounting hole, 6, refrigerant medium mixing flow channel groove, 7, refrigerant medium inlet joint, 8, refrigerant medium outlet joint, 9, connecting groove one, 10, partition plate, 11, rear end cover plate connecting boss, 12, connecting plate connecting boss, 13, partition plate card slot, 14, water inlet guide flow channel groove, 15, water outlet guide flow channel groove, 16, connecting groove two, 17, flow channel fin, 18, flow channel groove, 19, front end head, 20, guide plate, 21, rear end head, 22, mold mounting hole, 23, mold, 24, guide column mounting hole, 25, guide column, 26, cylinder, 27, flow channel mold, 28, flow channel fin mold, 29, flow channel cavity, 30, original plate aluminum rod, 31, original plate placement groove. DETAILED DESCRIPTION

[0056] A water cooling plate for electronic components and a production process method of the present invention are described in detail below with reference to the accompanying drawings and specific embodiments of the specification.

[0057] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0058] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] Embodiment 1:

[0060] As attached Figure 1 , 2As shown in Figures 3 and 4, the electronic components water-cooled plate of the present invention mainly comprises a cold plate body 1, a connecting plate 3 and a rear cover plate 2. One end of the cold plate body 1 is snap-fitted with the rear cover plate 2 and connected to the rear cover plate 2 by brazing, and the other end of the cold plate body 1 is snap-fitted with the connecting plate 3 and connected to the connecting plate 3 by brazing; a plurality of mounting holes 5 are provided on the surface of the cold plate body 1, and the mounting holes 5 are located between two adjacent refrigerant medium flow channels 4 and are arranged along the thickness direction of the cold plate body 1 and penetrate the cold plate body 1; the mounting holes 5 are used to fix the original plate aluminum rod 30 on the extruder for extrusion, so that sufficient thickness is reserved for the arrangement of the mounting holes on the cold plate body 1. If the refrigerant medium flow channel is arranged in the existing original plate aluminum rod machining structure and the mounting holes are arranged, there is a risk of leakage, a low service life, and low pressure bearing strength.

[0061] As attached Figure 4 As shown, a number of evenly arranged and mutually parallel refrigerant flow channels 4 are provided in the cold plate body 1, and the refrigerant flow channels 4 are arranged along the length direction of the cold plate body 1; the cross section of the refrigerant flow channels 4 is circular. A rear end cover plate connecting boss 11 and a connecting plate connecting boss 12 are respectively provided at both ends of the cold plate body 1, and the refrigerant flow channels 4 penetrate the cold plate body 1 and the rear end cover plate connecting boss 11 and the connecting plate connecting boss 12 located at both ends of the cold plate body 1, and the rear end cover plate connecting boss 11 and the connecting plate connecting boss 12 are respectively engaged with the rear end cover plate 2 and the connecting plate 3; a partition plate card slot 13 is provided in the middle of the connecting plate connecting boss 12.

[0062] As attached Figure 5 and 6As shown, a connecting groove 9 is provided on one side of the connecting plate 3, and the connecting groove 9 is snap-fitted with the connecting plate connecting boss 12; a water inlet guide flow channel groove 14 and a water outlet guide flow channel groove 15 are provided on the bottom surface of the connecting groove 9, and a partition plate 10 is formed between the water inlet guide flow channel groove 14 and the water outlet guide flow channel groove 15, and the partition plate 10 is snap-fitted with the partition plate snap-fitting groove 13; a refrigerant medium inlet joint 7 is installed in the water inlet guide flow channel groove 14, and a refrigerant medium outlet joint 8 is installed in the water outlet guide flow channel groove 15, and the channel directions of the refrigerant medium inlet joint 7 and the refrigerant medium outlet joint 8 are consistent with the flow direction of the refrigerant medium flow channel 4; the two ends of the connecting groove 9 form a stepped platform structure with the water inlet guide flow channel groove 14 and the water outlet guide flow channel groove 15 respectively. One end of the refrigerant inlet joint 7 is connected to the water inlet guide channel groove 14, and the other end extends out of the connecting plate 3 and the extended end of the refrigerant inlet joint 7 is provided with an external thread, which is convenient for external connection to the water inlet pipe; one end of the refrigerant outlet joint 8 is connected to the water outlet guide channel groove 15, and the other end extends out of the connecting plate 3 and the extended end of the refrigerant inlet joint 8 is provided with an external thread, which is convenient for external connection to the water outlet pipe; the connecting plate 2 is an integrally formed structure with the refrigerant inlet joint 7 and the refrigerant outlet joint 8. The water inlet guide channel groove 14 and the water outlet guide channel groove 15 are both long strip groove structures with arc-shaped ends.

[0063] As attached Figure 7 and 8 As shown, a connecting groove 2 16 is provided on one side surface of the rear cover plate 2, and the connecting groove 2 16 is snap-fitted with the rear cover plate connecting boss 11; a refrigerant medium mixing flow channel groove 6 is provided on the bottom surface of the connecting groove 2 16, and the refrigerant medium mixing flow channel groove 6 is connected with the refrigerant medium flow channel 4; the connecting groove 2 16 and the refrigerant medium mixing flow channel groove 6 form a stepped platform structure. The connecting groove 1 9 and the connecting groove 2 16 are both long strip groove structures with arc shapes at both ends; the rear cover plate connecting boss 11 and the connecting plate connecting boss 12 are both long strip structures with arc shapes at both ends.

[0064] Working process: The refrigerant enters the water inlet guide flow channel groove 14 through the refrigerant medium inlet joint 7, the water inlet guide flow channel groove 14 is connected with the refrigerant medium flow channel 4 and enters the refrigerant medium mixing flow channel groove 6, then returns through the refrigerant medium flow channel 4, and flows out from the refrigerant medium outlet joint 8 after passing through the water outlet guide flow channel groove 15.

[0065] The cold plate body 1 is formed into an integral body by extrusion by an extruder. Fig.11 and 12As shown, the extruder includes a front end head 19, a guide plate 20 and a rear end head 21 which are arranged in sequence. A mold mounting hole 22 is provided in the middle of the front end head 19, and a mold 23 is installed in the mold mounting hole 22; a guide post mounting hole 24 is provided in the middle of the guide plate 20, and a guide post 25 is installed in the guide post mounting hole 24. An original plate placing groove 31 is provided between one end of the guide post 25 and the mold 23, and the original plate placing groove 31 is used to place the original plate aluminum rod 30. A cylinder 26 is installed at the other end of the guide post 25, and the piston rod end of the cylinder 26 is connected to the guide post 25; the piston rod end of the cylinder 26 and the guide post 25 pass through the middle of the rear end head 21; a plurality of flow channel dies 27 arranged at intervals are provided in the middle of the mold 23. The flow channel dies 27 are cylindrical.

[0066] Working process: First, place the original sheet aluminum rod 30 in the original sheet placement groove 31; then, start the cylinder 26, the piston rod end of the cylinder 26 moves, and pushes the guide column 25 to move in turn, and the guide column 25 drives the original sheet aluminum rod 30 to move forward and pass through the mold 23, and is extruded into the cold plate body 1 through the runner mold 27 in the mold 23 and extruded from the other end of the mold 23.

[0067] Embodiment 2:

[0068] The difference between this embodiment and embodiment 1 is that: Fig. 9 As shown, the cross section of the refrigerant medium flow channel 4 is square, and a plurality of flow channel fins 17 are arranged on the inner side of the square refrigerant medium flow channel 4, and a flow channel groove 18 is formed between two adjacent flow channel fins 17, which can increase the contact area with the refrigerant medium and realize the increase of the heat dissipation area. Compared with the same outer dimensions of the cold plate body 1, or the cold plate with the same flow channel cross-sectional area, the heat dissipation efficiency is greatly improved; the setting of the flow channel fins 17 can increase the strength of the cold plate body, maximize the flow channel wall thickness, reduce the overall size of the cold plate body, reduce the weight, improve the heat dissipation performance, and reduce the cost. Other structures, connection relationships, and position relationships are the same as those in Example 1.

[0069] Embodiment 3:

[0070] The difference between this embodiment and embodiment 1 is that: Fig.10 As shown, the bottom surface of the refrigerant medium mixing channel groove 6 is arc-shaped to reduce the impact force of the water flow. Other structures, connection relationships, and position relationships are the same as those in the first embodiment.

[0071] Embodiment 4:

[0072] The difference between this embodiment and embodiment 1 is that: Fig.13 As shown, the channel mold 27 is square, and a plurality of spaced channel fin molds 28 are arranged on the inner side of the square channel mold 27, and a channel cavity 29 is formed between two adjacent channel fin molds 28. Other structures, connection relationships, and position relationships are the same as those in the first embodiment.

[0073] Embodiment 5:

[0074] The process for producing a water-cooled plate for electronic components according to Embodiment 1 of the present invention comprises the following steps:

[0075] (1) Processing cold plate body 1:

[0076] The original sheet aluminum rod 30 is heated by a heating furnace; when the temperature reaches 400-500° C., the extruder is started, and the original sheet aluminum rod 30 heated to the required temperature is placed between the guide pillar 25 and the mold 23, and the cylinder 26 pushes the guide pillar 25, and the original sheet aluminum rod 30 is pushed into the mold 23 under the guidance of the guide plate 20, and the shape of the original sheet aluminum rod 30 is changed by the extrusion force through the mold 23, and the original sheet aluminum rod 30 is formed into a profile through the mold; after the profile is formed, according to the length requirement, the fixed-length profile is cut into the cold plate body 1 by an automatic cutting saw, and then the cold plate body 1 is fine-tuned for appearance straightness by a leveling and shaping machine;

[0077] The rear end cover plate connecting bosses 11 and the connecting plate connecting bosses 12 at both ends of the cold plate body 1 are formed by mechanical processing;

[0078] (2) Processing connecting plate 3:

[0079] The connecting plate 3 and the connecting groove 9, the water inlet guide channel groove 14 and the water outlet guide channel groove 15 on the connecting plate are machined, and the cold medium inlet joint 7 and the cold medium outlet joint 8 that penetrate the connecting plate 3 are an integrated structure with the connecting plate 3;

[0080] (3) Processing rear end cover 2:

[0081] The rear end cover plate 2, the second connecting groove 16 and the refrigerant medium mixing channel groove 6 on the rear end cover plate are machined;

[0082] (4) Assembly: The end face of the connecting boss 12 of the connecting plate at one end of the cold plate body 1 is snap-fitted with the connecting groove 19 of the connecting plate 3 and the gap therebetween is filled with meltable solder. The rear end cover plate connecting boss 2 at the other end of the cold plate body 1 is snap-fitted with the connecting groove 16 of the rear end cover plate 2 and the gap therebetween is filled with meltable solder. The cold plate body 1, the connecting plate 3 and the rear end cover plate 2 are fixed with a welding fixture and then brazed in a continuous nitrogen protection brazing furnace.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water cooling plate for electronic components, characterized in that: It comprises a cold plate body, one end of the cold plate body is provided with a rear end cover plate, the other end of the cold plate body is provided with a connecting plate, the two ends of the cold plate body are respectively engaged with the rear end cover plate and the connecting plate, and the two ends of the cold plate body are respectively connected with the rear end cover plate and the connecting plate by brazing welding; A number of evenly arranged and mutually parallel refrigerant flow channels are arranged in the cold plate body, and the refrigerant flow channels are arranged along the length direction of the cold plate body; a rear end cover plate connecting boss and a connecting plate connecting boss are respectively arranged at both ends of the cold plate body, and the refrigerant flow channels penetrate the cold plate body and the rear end cover plate connecting boss and the connecting plate connecting boss located at both ends of the cold plate body, and the rear end cover plate connecting boss and the connecting plate connecting boss are respectively engaged with the rear end cover plate and the connecting plate; a partition plate card slot is arranged in the middle of the connecting plate connecting boss; A connecting groove 1 is provided on one side of the connecting plate, and the connecting groove 1 is snap-fitted with the connecting boss of the connecting plate; a water inlet guide flow channel groove and a water outlet guide flow channel groove are provided on the bottom surface of the connecting groove 1, and a partition plate is formed between the water inlet guide flow channel groove and the water outlet guide flow channel groove, and the partition plate is snap-fitted with the partition plate slot; a refrigerant medium inlet joint is provided in the water inlet guide flow channel groove, and a refrigerant medium outlet joint is provided in the water outlet guide flow channel groove, and the channel direction of the refrigerant medium inlet joint and the refrigerant medium outlet joint is consistent with the flow direction of the refrigerant medium flow channel; the two ends of the connecting groove 1 form a stepped platform structure with the water inlet guide flow channel groove and the water outlet guide flow channel groove respectively; A second connecting groove is provided on one side surface of the rear end cover plate, and the second connecting groove is engaged with the connecting boss of the rear end cover plate; a refrigerant medium mixing flow channel groove is provided on the bottom surface of the second connecting groove, and the refrigerant medium mixing flow channel groove is connected with the refrigerant medium flow channel; the second connecting groove and the refrigerant medium mixing flow channel groove form a stepped platform structure; The surface of the cold plate body is provided with a mounting hole, the mounting hole is located between two adjacent refrigerant medium flow channels and the mounting hole is arranged along the thickness direction of the cold plate body and penetrates the cold plate body; One end of the refrigerant medium inlet joint is connected to the water inlet guide channel groove, and the other end extends out of a connecting plate, and the extended end of the refrigerant medium inlet joint is provided with an external thread; One end of the refrigerant outlet joint is connected to the water outlet guide channel groove, and the other end extends out of a connecting plate, and the extended end of the refrigerant inlet joint is provided with an external thread; The connecting plate, the refrigerant medium inlet joint and the refrigerant medium outlet joint are an integrally formed structure; The cold plate body is extruded and formed in one piece by an extruder.

2. The water cooling plate for electronic components according to claim 1, characterized in that: The water inlet guide channel groove and the water outlet guide channel groove are both long strip groove structures with arc-shaped ends; The connecting groove 1 and the connecting groove 2 are both long groove structures with arc-shaped ends; The rear end cover plate connecting boss and the connecting plate connecting boss are both long strip structures with arc-shaped ends.

3. The water cooling plate for electronic components according to claim 1 or 2, characterized in that: The bottom surface of the refrigerant medium mixing channel groove is in an arc shape.

4. The water cooling plate for electronic components according to claim 3, characterized in that: The cross section of the refrigerant medium flow channel is circular.

5. The water cooling plate for electronic components according to claim 4, characterized in that: The cross section of the refrigerant medium flow channel is square, and a plurality of flow channel fins are arranged on the inner side of the square refrigerant medium flow channel, and a flow channel groove is formed between two adjacent flow channel fins.

6. The water cooling plate for electronic components according to claim 1, characterized in that: The extruder comprises a front end head, a guide plate and a rear end head which are arranged in sequence. A mold mounting hole is provided at the middle position of the front end head, and a mold is installed in the mold mounting hole. A guide post mounting hole is provided at the middle position of the guide plate, and a guide post is installed in the guide post mounting hole. An original plate placing groove is provided between one end of the guide post and the mold, and the original plate placing groove is used to place the original plate aluminum rod. A cylinder is provided at the other end of the guide post, and the piston rod end of the cylinder is connected to the guide post. The piston rod end of the cylinder and the guide post pass through the middle position of the rear end head. A plurality of flow channel molds are arranged at intervals in the middle of the mold.

7. The water cooling plate for electronic components according to claim 6, characterized in that: The flow channel mold is cylindrical or square, and a plurality of flow channel fin molds arranged at intervals are arranged on the inner side surface of the square flow channel mold, and a flow channel cavity is formed between two adjacent flow channel fin molds.

8. A process for producing a water-cooled plate for electronic components, characterized in that: The steps of this method are as follows: (1) Processing the cold plate body: The original sheet aluminum rod is heated by a heating furnace; when the temperature reaches 400-500℃, the extruder is started, and the original sheet aluminum rod heated to the required temperature is placed between the guide column and the die. The cylinder pushes the guide column, and the original sheet aluminum rod is pushed into the die under the guidance of the guide plate. The shape of the original sheet aluminum rod is changed through the die by the extrusion force, and the original sheet aluminum rod is formed into a profile through the die; after the profile is formed, the fixed-length profile is cut into the cold plate body according to the length requirements by an automatic cutting saw, and then the cold plate body is fine-tuned for appearance straightness by a leveling and shaping machine; The rear cover plate connecting bosses and the connecting plate connecting bosses at both ends of the cold plate body are formed by mechanical processing; (2) Processing connecting plate: The connection plate and the connection groove 1, the water inlet guide channel groove and the water outlet guide channel groove are machined by mechanical processing, and the refrigerant medium inlet joint and the refrigerant medium outlet joint that penetrate the connection plate are an integrated structure with the connection plate; (3) Processing the rear end cover: The rear end cover plate, the second connecting groove on the rear end cover plate, and the refrigerant medium mixing flow channel groove are machined by mechanical processing; (4) Assembly: Snap-fit ​​the end face of the connecting boss of the connecting plate at one end of the cold plate body with the connecting groove 1 of the connecting plate and fill the gap between them with meltable solder. Snap-fit ​​the connecting boss of the rear end cover plate at the other end of the cold plate body with the connecting groove 2 of the rear end cover plate and fill the gap between them with meltable solder. Fix the cold plate body, the connecting plate and the rear end cover plate with a welding fixture, and then use a continuous nitrogen protection brazing furnace for brazing.

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