Unequal-thickness multi-cavity tubular vapor chamber and preparation method thereof

Abstract

The invention discloses an unequal-thickness multi-cavity tubular vapor chamber and a preparation method thereof.The vapor chamber comprises a heat conduction pipe body, a first sealing part is arranged at one end of the heat conduction pipe body, a second sealing part is arranged at the other end of the heat conduction pipe body, cooling liquid is arranged in the heat conduction pipe body, the heat conduction pipe body comprises an upper sheet body and a lower sheet body, and an upper protruding strip is arranged on the inner side of the middle of the upper sheet body; an upper protruding strip is arranged on the inner side of the middle of the upper sheet body and extends along the two ends of the upper sheet body, a lower protruding strip is arranged on the inner side of the middle of the lower sheet body and extends along the two ends of the lower sheet body, and the upper protruding strip is fixedly connected with the lower protruding strip. The upper raised lines and the lower raised lines are arranged on the inner side of the middle of the vapor chamber, so that the installation and use strength of the vapor chamber is enhanced, the width size of the vapor chamber can be expanded, the vapor chamber is applied to a heat source with a wider size, the strength of the vapor chamber cannot be reduced due to size expansion, the overall strength is guaranteed, the heat dissipation effect is also guaranteed, and the service life of the vapor chamber is prolonged. The upper raised lines and the lower raised lines are arranged in the middle, so that excessive internal space is not occupied, and the circulating heat conduction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature equalizing plate preparation, and in particular to a unequal thickness multi-cavity tubular temperature equalizing plate and a preparation method thereof. Background Art

[0002] With the continuous increase in heat flux density of electronic chips and the increase in power demand, traditional air cooling technology can no longer meet the heat dissipation needs of highly integrated electronic chips, and liquid cooling technology has gradually become the mainstream of the market.

[0003] At present, liquid cooling technology includes direct cooling and indirect cooling. Direct cooling is to fill the chassis with insulating liquid such as fluorinated liquid to directly contact the electronic chip to dissipate heat. This method is limited by the insulating liquid, is costly and difficult to maintain, and is rarely used in the market. Indirect cooling is to set up a liquid flow channel inside the liquid cooling plate. The fluid conducts heat through the contact between the liquid cooling plate and the electronic chip. Since direct contact between the fluid and the electronic chip is avoided, indirect cooling is more popular in existing liquid cooling technologies. However, the process of opening a liquid flow channel in the liquid cooling plate is relatively complicated, the cost is high, and the heat dissipation efficiency cannot be well guaranteed. The liquid cooling plate is easily deformed by pressure during installation and use, which seriously affects the overall heat dissipation performance. In order to ensure a certain installation strength of the liquid cooling plate, the width of the liquid cooling plate cannot be expanded. Therefore, the liquid cooling plate with a small width cannot be used on large chips. In order to solve the above problems, the prior art improves the installation strength of the liquid cooling plate by separately setting a supporting structure in the cavity of the liquid cooling plate. The supporting structure is composed of more than two columns, and each column is arranged one by one inside the liquid cooling plate at intervals. Too many columns not only occupy a large amount of internal space, which affects the circulation of the coolant, but also requires a lot of manpower, the process is tedious and complicated, and the preparation time is long.

[0004] Therefore, it is necessary to provide a unequal thickness multi-cavity tubular temperature equalizing plate and a preparation method thereof. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-cavity tubular temperature-averaging plate of unequal thickness and a preparation method thereof in response to the above-mentioned problems. An upper convex strip and a lower convex strip are arranged on the inner side of the middle part of the temperature-averaging plate, and the upper convex strip is connected to the lower convex strip, thereby enhancing the installation and use strength of the temperature-averaging plate, so that the width of the temperature-averaging plate can be expanded and applied to a heat source of a wider size. The strength of the temperature-averaging plate will not decrease due to the expansion of the size, thereby ensuring both the overall strength and the heat dissipation effect. The upper convex strip and the lower convex strip are arranged in the middle part, do not occupy too much internal space, and improve the efficiency of circulating heat conduction.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is as follows:

[0007] According to one aspect of the present invention, there is provided a unequal thickness multi-cavity tubular temperature equalizing plate, comprising a heat conducting tube body with a cooling liquid arranged inside, a first sealing portion being arranged at one end of the heat conducting tube body, the first sealing portion being connected to the heat conducting tube body as a whole, and a second sealing portion being arranged at the other end of the heat conducting tube body, the second sealing portion being connected to the heat conducting tube body as a whole;

[0008] The heat-conducting pipe body includes an upper sheet and a lower sheet. An upper convex strip is arranged on the inner side of the middle part of the upper sheet, and the upper convex strip extends to both ends along the longitudinal direction of the upper sheet. A lower convex strip is arranged on the inner side of the middle part of the lower sheet, and the lower convex strip extends to both ends along the longitudinal direction of the lower sheet. The upper convex strip is fixedly connected to the lower convex strip.

[0009] Preferably, the lateral dimensions of the upper convex strip and the lower convex strip gradually decrease from the bottom to the top, the top end surfaces of the upper convex strip and the lower convex strip are arranged in a plane, and the top of the upper convex strip is fixedly connected to the top of the lower convex strip.

[0010] Preferably, it further comprises a liquid absorbent core, which is fixedly arranged on the inner side wall of the upper sheet body and the outer side walls of the upper convex strip and the lower convex strip.

[0011] Preferably, heat dissipation fins are provided on the outer side wall of the upper sheet body, and the heat dissipation fins are fixedly connected to the upper sheet body.

[0012] Preferably, the heat dissipation fin includes a first zigzag fin and a second zigzag fin, the first zigzag fin and the second zigzag fin are alternately arranged in sequence along the transverse direction of the upper sheet, the first zigzag fin and the second zigzag fin are fixedly connected, and the crest of the first zigzag fin and the crest of the second zigzag fin are staggered, and the first zigzag fin and the second zigzag fin are both extended along the longitudinal direction of the upper sheet.

[0013] Preferably, the first zigzag fin and the second zigzag fin both have square wave cross-sections.

[0014] Preferably, the heat dissipation fins include a third zigzag fin group, the third zigzag fin group includes a plurality of third zigzag fins arranged in sequence along the longitudinal direction of the upper sheet body, the plurality of third zigzag fins are connected in sequence as a whole, and the crests of the third zigzag fins are arranged in a wave shape along the transverse direction of the upper sheet body.

[0015] Preferably, the heat dissipating fins include a fourth zigzag fin group, the fourth zigzag fin group includes a plurality of fourth zigzag fins arranged in sequence along the transverse direction of the upper sheet body, the plurality of fourth zigzag fins are connected in sequence, and the crests of the fourth zigzag fins are arranged in a straight line along the longitudinal direction of the upper sheet body.

[0016] Preferably, a method for preparing a multi-cavity tubular temperature-averaging plate with unequal thickness comprises the following steps:

[0017] S1. Select a planar substrate, divide the planar substrate into an upper sheet area, a bending area and a lower sheet area, the upper sheet area and the lower sheet area are of the same size, roll a rib in the middle of the upper sheet area to form an upper convex strip arranged along the longitudinal direction of the upper sheet, and roll a rib in the middle of the lower sheet area to form a lower convex strip arranged along the longitudinal direction of the lower sheet;

[0018] S2. After the rolling and rib forming is completed, the side of the upper sheet area away from the bending area is rolled along the longitudinal direction of the upper sheet to form an upper connecting portion with an arc, and the upper connecting portion is bent toward the side of the upper convex strip. The side of the lower sheet area away from the bending area is rolled along the longitudinal direction of the lower sheet to form a lower connecting portion with an arc, and the lower connecting portion is bent toward the side of the lower convex strip. The middle part of the bending area is then rolled to make the upper connecting portion and the lower connecting portion close to each other to form a U-shaped material, and the upper connecting portion and the lower connecting portion are welded to form an O-shaped tube body.

[0019] S3, rolling the two opposite sides of the O-shaped tube body until the corresponding upper convex strips are in contact with the lower convex strips, at which time the O-shaped tube body becomes an elliptical tube body, cutting the elliptical tube body to form tube body segments, cleaning the tube body segments, and checking for leaks;

[0020] S4, welding the contact point between the upper convex strip and the lower convex strip in the pipe body section, then punching one end of the pipe body section to make the upper and lower sides of the end closely contact, and welding the contact part to form a semi-sealed pipe body section, and passing liquid into the open end of the semi-sealed pipe body section for water test. After the water test, vacuuming the semi-sealed pipe body section from the open end and injecting coolant;

[0021] S5. Punch and weld the open end of the semi-sealed pipe body section so that both ends of the pipe body section are sealed to form a temperature equalizing plate.

[0022] Preferably, in step S5, the following steps are also included:

[0023] Select a heat sink fin and place it close to an outer wall of the temperature homogenizing plate;

[0024] Welding is performed at the contact point between the heat dissipation fin and the temperature equalizing plate to fix the heat dissipation fin on the outer wall of the temperature equalizing plate.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. The present invention arranges upper convex strips and lower convex strips on the inner side of the middle part of the temperature equalizing plate, and the upper convex strips are connected to the lower convex strips, thereby strengthening the installation and use strength of the temperature equalizing plate, so that the width of the temperature equalizing plate can be expanded and applied to a wider heat source, and the strength of the temperature equalizing plate will not decrease due to the expansion of the size, thereby ensuring both the overall strength and the heat dissipation effect.

[0027] 2. The upper and lower convex strips of the present invention are arranged in the middle, which does not occupy too much internal space and improves the efficiency of circulating heat conduction.

[0028] 3. The present invention only needs to roll out the upper convex strips and the lower convex strips to ensure the overall strength of the temperature equalizing plate, and the manufacturing steps are simple, the process is less, and the preparation efficiency is high.

[0029] 4. After the upper convex strip and the lower convex strip of the present invention are connected, it is equivalent to dividing the internal space of the temperature equalizer into two relatively independent spaces. The temperature equalizer can be applied to two different chips to dissipate heat for the two chips, thereby improving the utilization rate of the temperature equalizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0031] Figure 2 is a cross-sectional view of the internal structure of the present invention;

[0032] Figure 3 It is a structural schematic diagram of the rolling and rib-pressing equipment of the present invention;

[0033] Figure 4 It is a structural schematic diagram of the roller device of the present invention;

[0034] Figure 5 is a schematic structural diagram of a welding station of the present invention;

[0035] Figure 6 is a schematic structural diagram of the heat dissipation fin of embodiment 1 of the present invention;

[0036] Figure 7-10 It is the simulation cloud diagram of the comparison 1-3 and the embodiment 1 in the comparative experiment of the present invention;

[0037] Fig.11 is a schematic diagram of the heat dissipation fin structure of embodiment 2 of the present invention;

[0038] Fig.12 is a schematic diagram of the heat dissipation fin structure of embodiment 3 of the present invention;

[0039] Figure 13-16 It is a simulation cloud diagram of controls 1-3 and embodiment 1 in the comparative experiment of the present invention.

[0040] In the attached drawings, 1, heat-conducting pipe body; 2, upper sheet body; 3, lower sheet body; 4, upper convex strip; 5, lower convex strip; 6, first sealing portion; 7, second sealing portion; 8, first zigzag fin; 9, second zigzag fin; 10, third zigzag fin; 11, fourth zigzag fin. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the invention, and these aspects of the present invention can be realized even without these specific details.

[0042] See also Figures 1 to 16 The present invention provides a unequal thickness multi-cavity tubular temperature equalizing plate and a preparation method thereof, and the technical scheme is as follows:

[0043] like Figure 1-2 As shown, a multi-cavity tube-type temperature equalizing plate with unequal thickness includes a heat-conducting tube body 1, which is formed by bending a sheet and connecting the two sides. The heat-conducting tube body 1 includes an upper sheet body 2 and a lower sheet body 3, and an upper convex strip 4 is arranged on the inner side of the middle part of the upper sheet body 2. The upper convex strip 4 extends along the longitudinal direction of the upper sheet body 2 to both ends. A lower convex strip 5 corresponding to the upper convex strip 4 is arranged on the inner side of the middle part of the lower sheet body 3. The lower convex strip 4 extends along the longitudinal direction of the lower sheet body 3 to both ends. The upper convex strip 4 is fixedly connected to the lower convex strip 5. By setting the upper convex strip 4 and the lower convex strip 5, the installation strength of the upper sheet 2 and the lower sheet 3 is increased, so that the strength of the manufactured temperature-averaging plate decreases due to the increase in the width dimension. The temperature-averaging plate is not easy to deform during installation and use, and the heat dissipation performance is not affected by the deformation of the tube body. In addition, by setting the upper convex strip 4 and the lower convex strip 5, the installation and use strength of the temperature-averaging plate is increased, so that the tube body can be made very thin, so that the convex strip and the rest of the tube body form an unequal thickness structure, and the thinner tube body is more conducive to heat dissipation. At the same time, it has a certain strength, and the heat dissipation effect is guaranteed while ensuring the strength. Among them, the lateral dimensions of the upper convex strip 4 and the lower convex strip 5 are gradually reduced from the bottom to the top, and the top end faces of the upper convex strip 4 and the lower convex strip 5 are arranged in a plane, and the top of the upper convex strip 4 is fixedly connected to the top of the lower convex strip 5. The upper convex strip 4 and the lower convex strip 5 are formed by rolling ribs, so the lateral dimensions of the upper convex strip 4 and the lower convex strip 5 are gradually reduced from the bottom to the top. In order to improve the tightness of the connection between the upper convex strip 4 and the lower convex strip 5, the tops of the upper convex strip 4 and the lower convex strip 5 are set to be flat, which not only ensures that the contact surface between the upper convex strip 4 and the lower convex strip 5 is larger, but also facilitates the welding of the upper convex strip 4 and the lower convex strip 5, providing more reliable support for the whole.

[0044] It should be noted that if Figure 3As shown, the upper rib 4 and the lower rib 5 are both rolled by a rolling rib equipment. The rolling rib equipment includes a base, a pressing groove is provided on the base, and a die assembly is also provided on the base. The die assembly is controlled by a cylinder and a moving assembly. The die assembly includes two dies arranged at intervals, and the moving assembly is composed of a roller and a motor. When the sheet is placed in the pressing groove, the die is first controlled to press on one side of the sheet. The portion of the sheet pressed by the die becomes thinner, while the portion not pressed is retained, and the retained portion forms the upper rib 4. The lower rib 5 is pressed out according to the same steps. The upper rib 4 and the lower rib 5 are the thick portions of the sheet. When the sheet is used to make the heat-conducting pipe body 1, the strength of the entire heat-conducting pipe body 1 is enhanced, and the thinned portion can improve the heat dissipation performance. As shown Figure 4 As shown, the sheet is formed into a heat-conducting pipe body 1 by a roller device. Specifically, an upper roller with a gradually decreasing thickness is used to roll the sheet, and a concave roller with a gradually decreasing width is used to gradually tighten the two sides of the sheet from a flat state, and slowly turn it into a U-shaped profile. Finally, the tightening roller is replaced, and the U-shaped profile is continued to be rolled to make the two sides of the U-shaped profile close together, and finally the two sides that are close together are welded by a welding station assembly to form an O-shaped pipe body. The welding station assembly is shown in FIG. Figure 5 shown.

[0045] A first sealing portion 6 is provided at one end of the heat-conducting pipe body 1, and the first sealing portion 6 is connected to the heat-conducting pipe body 1 as a whole. A second sealing portion 7 is provided at the other end of the heat-conducting pipe body 1, and the second sealing portion 7 is connected to the heat-conducting pipe body 1 as a whole. The first sealing portion 6 and the second sealing portion 7 are both formed by stamping at the end of the heat-conducting pipe body 1 by a stamping device. Specifically, the end of the heat-conducting pipe body 1 is placed in the stamping device, and the upper and lower sides of the end of the heat-conducting pipe body 1 are stamped by the stamping device. The end of the upper sheet 2 is bent inwardly to form a first bending portion, and the end of the lower sheet 3 is bent inwardly to form a second bending portion. The stamping makes the upper and lower sides of the end of the heat-conducting pipe body close together, and finally the close parts of the upper and lower sides are welded by a high-frequency welding station. The same operation is performed on the other end of the heat-conducting pipe body to seal the two ends of the heat-conducting pipe body to form a temperature equalizing plate.

[0046] The cavity of the temperature-averaging board is provided with a cooling liquid, which evaporates after the temperature of the heated end of the temperature-averaging board rises, and the gaseous cooling substance rises to the cold end on the upper side of the temperature-averaging board, and falls back to the hot end after liquefaction, and continuously circulates to achieve the effect of heat dissipation. In the cavity of the temperature-averaging board, the upper convex strip 4 and the lower convex strip 5 are equivalent to dividing the cavity into two small cavities, and the two small cavities can perform relatively independent gas-liquid circulation, so that the temperature-averaging board can also be used to dissipate heat and cool different chips at the same time.

[0047] Furthermore, a liquid wick is also provided on the inner wall of the upper body, the outer wall of the upper convex strip 4 and the lower convex strip 5. The liquid wick is based on the capillary effect and the principle of liquid dynamics. When the liquid contacts the surface of the liquid wick, due to the micro-pore structure inside the liquid wick, the liquid is quickly sucked in and diffused along the fiber network, forming a "wicking" phenomenon. This effect enables the liquid to flow back to the evaporation end under the action of gravity, thereby facilitating the transfer and circulation of heat. The liquid wick includes a metal mesh type or a metal sintering type. The metal mesh type is to attach a metal wire mesh of a certain mesh number to the inner wall of the first tube body and the outer wall of the dotting groove. The metal sintering type includes powder sintering and fiber sintering. By providing the liquid wick, the heat transfer rate and the circulation of the coolant are increased, and the heat dissipation efficiency is further improved.

[0048] like Figure 6 As shown, a heat dissipation fin is arranged on the outer wall of the upper sheet body 2, and the heat dissipation fin is fixedly connected to the upper sheet body 2. The heat dissipation fin includes a first zigzag fin 8 and a second zigzag fin 9, which are arranged alternately in the transverse direction of the upper sheet body, the first zigzag fin 8 and the second zigzag fin 9 are fixedly connected, and the crest of the first zigzag fin 8 and the crest of the second zigzag fin 9 are staggered, and the first zigzag fin 8 and the second zigzag fin 9 are both extended along the longitudinal direction of the upper sheet body 2. The heat dissipation fin is in contact with the upper sheet body 2, and the heat of the upper sheet body 2 can be transferred to dissipate heat, thereby improving the heat dissipation effect. The crest of the first zigzag fin 8 of the heat dissipation fin is staggered with the crest of the second zigzag fin 9, so that the first zigzag fin 8 and the second zigzag fin 9 form a staggered gap, and air can flow through the staggered gap, thereby improving the heat dissipation effect of the heat dissipation fin.

[0049] A method for preparing a unequal thickness multi-cavity tubular temperature equalizing plate and a method for preparing the same, characterized in that it comprises the following steps:

[0050] S1. Select a planar substrate, divide the planar substrate into an upper sheet area, a bending area and a lower sheet area, the upper sheet area and the lower sheet area are of the same size, roll a rib in the middle of the upper sheet area to form an upper convex strip arranged along the longitudinal direction of the upper sheet, and roll a rib in the middle of the lower sheet area to form a lower convex strip arranged along the longitudinal direction of the lower sheet;

[0051] S2. After the rolling and rib forming is completed, the side of the upper sheet area away from the bending area is rolled along the longitudinal direction of the upper sheet to form an upper connecting portion with an arc, and the upper connecting portion is bent toward the side of the upper convex strip. The side of the lower sheet area away from the bending area is rolled along the longitudinal direction of the lower sheet to form a lower connecting portion with an arc, and the lower connecting portion is bent toward the side of the lower convex strip. The middle part of the bending area is then rolled to make the upper connecting portion and the lower connecting portion close to each other to form a U-shaped material, and the upper connecting portion and the lower connecting portion are welded to form an O-shaped tube body.

[0052] S3, rolling the two opposite sides of the O-shaped tube body until the corresponding upper convex strips are in contact with the lower convex strips, at which time the O-shaped tube body becomes an elliptical tube body, cutting the elliptical tube body to form tube body segments, cleaning the tube body segments, and checking for leaks;

[0053] S4, welding the contact point between the upper convex strip and the lower convex strip in the pipe body section, then punching one end of the pipe body section to make the upper and lower sides of the end closely contact, and welding the contact part to form a semi-sealed pipe body section, and passing liquid into the open end of the semi-sealed pipe body section for water test. After the water test, vacuuming the semi-sealed pipe body section from the open end and injecting coolant;

[0054] S5. Punch and weld the open end of the semi-sealed tube section to seal both ends of the tube section to form a temperature-averaging plate. Select a heat sink fin, place the heat sink fin close to an outer wall of the temperature-averaging plate, weld the heat sink fin at the contact point with the temperature-averaging plate, and fix the heat sink fin to the outer wall of the temperature-averaging plate.

[0055] By adopting the above-mentioned preparation process, the process is simple, the preparation efficiency is improved, and the process cost is reduced. Through this process, a temperature homogenizing board with better heat dissipation performance can be prepared.

[0056] The present invention carries out comparative experiment, and the conditions are:

[0057] Under the same outer dimensions (120mm×26mm T=2mm), compared with aluminum plate, O-tube without internal support and harmonica tube with internal columnar support, using the same heat source, heat source conditions: size (10mm×10mm) heat flow (50w), no cooling conditions, two seconds transient performance, the following Table 1 is obtained:

[0058] Table 1

[0059]

[0060] In Table 1, Comparative Example 1 is an aluminum plate, Comparative Example 2 is an O-type tube, Comparative Example 3 is a harmonica tube, and Example 1 is a temperature averaging board of the present invention. As can be seen from Table 1, the temperature averaging board of the present application has a significant drop in heat source temperature and a significant heat dissipation effect compared to Comparative Examples 1-3, and is lighter and has better heat dissipation performance. Figure 7-10 shown.

[0061] Example 2

[0062] like Fig.11As shown, the present invention provides a unequal thickness multi-cavity tubular temperature equalizing plate and a preparation method thereof. Different from Example 1, in this embodiment, the heat dissipation fins include a third folded line fin group, the third folded line fin group includes a plurality of third folded line fins 10 arranged in sequence along the longitudinal direction of the upper sheet body, the plurality of third folded line fins 10 are sequentially connected as a whole, and the crests of the third folded line fins 10 are arranged in a wavy shape along the transverse direction of the upper sheet body. The wavy heat dissipation fins increase the space for air circulation, so that the air can take away more heat from the heat dissipation fins, thereby improving the heat dissipation effect.

[0063] Example 3

[0064] like Fig.12 As shown, the present invention provides a unequal thickness multi-cavity tubular temperature equalizing plate and a preparation method thereof. Different from Example 1, in this embodiment, the heat dissipation fins include a fourth folded line fin group, and the fourth folded line fin group includes a plurality of fourth folded line fins 11 arranged in sequence along the transverse direction of the upper sheet body, and the plurality of fourth folded line fins 11 are sequentially connected as a whole, and the crests of the fourth folded line fins 11 are arranged in a straight line along the longitudinal direction of the upper sheet body. The straight-line heat dissipation fins improve the heat dissipation efficiency, are simple to manufacture, and are easy to produce, thereby improving the production efficiency.

[0065] Under the same outer dimensions (120mm×26mm T=2mm), compared with the combination of aluminum plate and heat sink fin, the combination of O-tube and heat sink fin without internal support, and the combination of harmonica tube and heat sink fin with internal columnar support, the same heat source is used, the heat source conditions are: size (10mm×10mm) heat flow (50w), no cooling conditions, two seconds transient performance, and the following Table 2 is obtained:

[0066] Table 2

[0067]

[0068] In Table 2, Control Example 1 is a combination of aluminum plate and heat sink fins, Control Example 2 is a combination of O-tube and heat sink fins, Control Example 3 is a combination of harmonica tube and heat sink fins, and Example 1 is a combination of the temperature averaging plate and heat sink fins of the present invention. It can be seen from Table 2 that the combination of the temperature averaging plate and heat sink fins of the present application has a significant drop in heat source temperature and a significant heat dissipation effect compared to Controls 1-3, and is lighter and has better heat dissipation performance. The simulation cloud diagram is shown in FIG. Figure 13-16 shown.

[0069] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-cavity tubular temperature plate with unequal thickness, characterized in that: A heat-conducting pipe body is provided with a cooling liquid inside, a first sealing part is provided at one end of the heat-conducting pipe body, the first sealing part is connected to the heat-conducting pipe body as a whole, and a second sealing part is provided at the other end of the heat-conducting pipe body, the second sealing part is connected to the heat-conducting pipe body as a whole; The heat-conducting pipe body includes an upper sheet and a lower sheet. An upper convex strip is arranged on the inner side of the middle part of the upper sheet, and the upper convex strip extends to both ends along the longitudinal direction of the upper sheet. A lower convex strip is arranged on the inner side of the middle part of the lower sheet, and the lower convex strip extends to both ends along the longitudinal direction of the lower sheet. The upper convex strip is fixedly connected to the lower convex strip.

2. The unequal thickness multi-cavity tubular temperature equalizing plate according to claim 1, characterized in that: The lateral dimensions of the upper convex strip and the lower convex strip gradually decrease from the bottom to the top, the top end surfaces of the upper convex strip and the lower convex strip are arranged in a plane, and the top of the upper convex strip is fixedly connected to the top of the lower convex strip.

3. The unequal thickness multi-cavity tubular temperature equalizing plate according to claim 1, characterized in that: It also includes a liquid absorbent core, which is fixedly arranged on the inner side wall of the upper sheet body, the outer side walls of the upper convex strip and the lower convex strip.

4. The unequal thickness multi-cavity tubular temperature equalizing plate according to claim 1, characterized in that: The outer side wall of the upper sheet body is provided with heat dissipation fins, and the heat dissipation fins are fixedly connected to the upper sheet body.

5. The unequal thickness multi-cavity tubular temperature equalizing plate according to claim 4, characterized in that: The heat dissipation fin includes a first zigzag fin and a second zigzag fin, the first zigzag fin and the second zigzag fin are alternately arranged in sequence along the transverse direction of the upper sheet, the first zigzag fin and the second zigzag fin are fixedly connected, and the crest of the first zigzag fin and the crest of the second zigzag fin are staggered, and the first zigzag fin and the second zigzag fin are both extended along the longitudinal direction of the upper sheet.

6. The unequal thickness multi-cavity tubular temperature equalizing plate according to claim 5, characterized in that: The first zigzag fin and the second zigzag fin both have square wave cross sections.

7. The unequal thickness multi-cavity tubular temperature equalizing plate according to claim 4, characterized in that: The heat dissipation fins include a third zigzag fin group, which includes a plurality of third zigzag fins arranged in sequence along the longitudinal direction of the upper sheet body, the plurality of third zigzag fins are connected in sequence, and the crests of the third zigzag fins are arranged in a wavy shape along the transverse direction of the upper sheet body.

8. The unequal thickness multi-cavity tubular temperature equalizing plate according to claim 4, characterized in that: The heat dissipation fins include a fourth zigzag fin group, which includes a plurality of fourth zigzag fins arranged in sequence along the transverse direction of the upper sheet body, the plurality of fourth zigzag fins are connected in sequence, and the crests of the fourth zigzag fins are arranged in a straight line along the longitudinal direction of the upper sheet body.

9. The method for preparing a multi-cavity tubular temperature equalizing plate with unequal thickness according to claim 1, characterized in that: The following steps are involved: S1. Select a planar substrate, divide the planar substrate into an upper sheet area, a bending area and a lower sheet area, the upper sheet area and the lower sheet area are of the same size, roll a rib in the middle of the upper sheet area to form an upper convex strip arranged along the longitudinal direction of the upper sheet, and roll a rib in the middle of the lower sheet area to form a lower convex strip arranged along the longitudinal direction of the lower sheet; S2. After the rolling and rib forming is completed, the side of the upper sheet area away from the bending area is rolled along the longitudinal direction of the upper sheet to form an upper connecting portion with an arc, and the upper connecting portion is bent toward the side of the upper convex strip. The side of the lower sheet area away from the bending area is rolled along the longitudinal direction of the lower sheet to form a lower connecting portion with an arc, and the lower connecting portion is bent toward the side of the lower convex strip. The middle part of the bending area is then rolled to make the upper connecting portion and the lower connecting portion close to each other to form a U-shaped material, and the upper connecting portion and the lower connecting portion are welded to form an O-shaped tube body. S3, rolling the two opposite sides of the O-shaped tube body until the corresponding upper convex strips are in contact with the lower convex strips, at which time the O-shaped tube body becomes an elliptical tube body, cutting the elliptical tube body to form tube body segments, cleaning the tube body segments, and checking for leaks; S4, welding the contact point between the upper convex strip and the lower convex strip in the pipe body section, then punching one end of the pipe body section to make the upper and lower sides of the end closely contact, and welding the contact part to form a semi-sealed pipe body section, and passing liquid into the open end of the semi-sealed pipe body section for water test. After the water test, vacuuming the semi-sealed pipe body section from the open end and injecting coolant; S5. Punch and weld the open end of the semi-sealed pipe body section so that both ends of the pipe body section are sealed to form a temperature equalizing plate.

10. The process for preparing a multi-cavity tubular temperature equalizing plate with unequal thickness according to claim 9, characterized in that: In the step S5, the following steps are also included: Select a heat sink fin and place it close to an outer wall of the temperature homogenizing plate; Welding is performed at the contact point between the heat dissipation fin and the temperature equalizing plate to fix the heat dissipation fin on the outer wall of the temperature equalizing plate.

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