Tubular uniform-temperature plate with single-face dotting

Abstract

The utility model discloses a single-sided dotted tubular vapor chamber, which comprises a first tube body and a second tube body, the first tube body and the second tube body are connected into a whole to form a hollow tube, the outer side surface of the first tube body is provided with a plurality of dotting grooves, and the dotting grooves are formed by recessing from the outer side surface of the first tube body to the inner side. The bottom of the dotting groove is fixedly connected with the inner side face of the second pipe body, the two ends of the first pipe body are bent inwards in an inclined mode to form first bent parts, the two ends of the second pipe body are bent inwards to form second bent parts, and the first bent parts and the second bent parts are connected in a sealed mode. The dotting grooves are formed in the upper surface through rolling, the rolled dotting grooves are in contact connection with the inner side of the bottom of the uniform-temperature plate, the whole pipe body is supported through the dotting grooves, the installation and use strength of the pipe body is improved, the situation that the heat dissipation effect is affected due to deformation of the pipe body is avoided, overall heat conduction is uniform, and the service life of the pipe body is prolonged. And the heat dissipation efficiency of the vapor chamber can be conveniently controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of uniform temperature plate preparation, especially relates to a single surface dotting pipe type uniform temperature plate. BACKGROUND

[0002] With the continuous increase of electronic chip heat flux density and the increase of power demand, the traditional air cooling technology has been unable to meet the heat dissipation demand of highly integrated electronic chips, and the liquid cooling technology gradually becomes the market mainstream, the current liquid cooling technology includes direct cooling and indirect cooling, the direct cooling is that the insulating liquid such as fluorinated liquid is filled in the case and directly contacts with electronic chip to dissipate heat, this mode is limited by the insulating liquid, the cost is high and not easy to maintain, and the application in the market is less.Indirect cooling is to set a liquid flow channel in the cavity liquid cooling plate made of metal heat conduction plate, fluid passes through the contact of liquid cooling plate and electronic chip to take away heat, since direct contact of fluid and electronic chip is avoided, indirect cooling is more popular in the existing liquid cooling technology, but the process of setting liquid flow channel in the liquid cooling plate is relatively complex, the cost is higher, and the liquid cooling plate is prone to deformation under pressure during installation and use, which seriously affects the overall heat dissipation performance, in order to solve the problem, the prior art sets a support column in the cavity of the liquid cooling plate to improve the installation strength of the liquid cooling plate, however, the separately set support column not only has extremely high process requirement and complex process steps, but also easily leads to high product failure rate, increases preparation cost and use cost. The separately set support column cannot be completely integrated with the liquid cooling plate, and the thickness of the two is difficult to control consistently, leading to uneven heat conduction. SUMMARY

[0003] The utility model discloses a single surface dotting pipe type uniform temperature plate, the upper surface of the uniform temperature plate is provided with a dotting groove through rolling, the dotting groove is connected with the inner side of the bottom of the uniform temperature plate through contact, the whole pipe body is supported by the dotting groove, the installation and use strength of the pipe body are improved, the heat dissipation effect is affected by the deformation of the pipe body is avoided, and the thickness of the dotting groove is basically consistent with the thickness of the pipe body, so that the heat conduction of the whole uniform temperature plate is uniform, and the heat dissipation efficiency of the uniform temperature plate is controlled.

[0004] In order to realize the above-mentioned utility model purpose, the technical scheme of the utility model is as follows:

[0005] According to one aspect of the present application, a single surface dotting pipe type uniform temperature plate is provided, which comprises a first pipe body and a second pipe body, the first pipe body and the second pipe body are connected as a whole to form a hollow pipe.

[0006] The outer side of the first pipe body is provided with a plurality of dotting grooves, the dotting grooves are formed by the outer side of the first pipe body being recessed inward, and the bottom of the dotting groove is fixedly connected with the inner side of the second pipe body.

[0007] The two end portions of the first tube body are respectively curved inwardly to form first bending portions, and the two end portions of the second tube body are respectively curved inwardly to form second bending portions, and the first bending portions are sealingly connected with the second bending portions.

[0008] Preferably, the extension line of the axis of the dotting groove is arranged to cross the axis of the first tube body, and the acute angle formed after the extension line of the axis of the dotting groove crosses the axis of the first tube body is 15-45°.

[0009] Preferably, the axis of the dotting groove is arranged to be axisymmetric with the axis of the adjacent dotting groove along the longitudinal direction of the first tube body.

[0010] Preferably, the liquid absorption core is further arranged to be fixed on the inner wall of the first tube body and the outer wall of the dotting groove.

[0011] Preferably, the outer wall of the first tube body is arranged with the heat dissipation fins, and the heat dissipation fins are fixedly connected with the first tube body.

[0012] Preferably, the heat dissipation fins include a first fold line type fin group and a second fold line type fin group, and the first fold line type fin group and the second fold line type fin group are alternately arranged along the transverse direction of the first tube body.

[0013] The first fold line type fin group includes a plurality of first fold line type fins arranged in sequence along the longitudinal direction of the first tube body, and the plurality of first fold line type fins are sequentially connected as a whole.

[0014] The second fold line type fin group includes a plurality of second fold line type fins arranged in sequence along the longitudinal direction of the first tube body, and the plurality of second fold line type fins are sequentially connected as a whole.

[0015] The wave peak width of the first fold line type fin is arranged to be dislocated with the wave peak of the second fold line type fin.

[0016] Preferably, the heat dissipation fins include a third fold line type fin group, the third fold line type fin group includes a plurality of third fold line type fins arranged in sequence along the longitudinal direction of the first tube body, and the plurality of third fold line type fins are sequentially connected as a whole, and the wave peak of the third fold line type fin is arranged to be wavy along the transverse direction of the first tube body.

[0017] Preferably, the heat dissipation fins include a fourth fold line type fin group, the fourth fold line type fin group includes a plurality of fourth fold line type fins arranged in sequence along the transverse direction of the first tube body, and the plurality of fourth fold line type fins are sequentially connected as a whole, and the wave peak of the fourth fold line type fin is arranged to be linear along the longitudinal direction of the first tube body.

[0018] Preferably, the method further includes the following steps:

[0019] S1, selecting a plane base material, sequentially dividing the plane base material into a dotting area, a bending area and a plane area along the transverse direction, and rolling and dotting in the dotting area along the longitudinal direction of the plane base material to form a dotting groove by recessing inward from the surface of the plane base material;

[0020] S2, rolling out a connecting part with an arc on both sides of the plane base material after rolling and dotting, bending the connecting part towards the recessing direction of the dotting groove, rolling the middle part of the bending area to make the connecting parts on both sides of the plane base material close to each other to form a U-shaped material, continuing to roll until the connecting parts on both sides contact, welding the connecting parts on both sides to form an O-shaped pipe body;

[0021] S3, rolling the two opposite sides of the O-shaped pipe body until the groove bottom of the dotting groove contacts the inner side of the plane area, the O-shaped pipe body becomes an elliptical pipe body, cutting the elliptical pipe body to form a pipe segment, cleaning and leak detecting the pipe segment;

[0022] S4, welding the contact part of the dotting groove and the plane area in the pipe segment, stamping one end of the pipe segment to make the upper and lower sides of the end part contact tightly and weld the contact part to form a semi-sealed pipe segment, passing a liquid into the open end of the semi-sealed pipe segment to test water, and after testing water, vacuumizing the semi-sealed pipe segment from the open end and injecting cooling liquid;

[0023] S5, stamping and welding the open end of the semi-sealed pipe segment to seal both ends of the pipe segment to form a uniform temperature plate.

[0024] Preferably, in the step S5, the following steps are further included:

[0025] selecting a heat dissipation fin, and tightly attaching the heat dissipation fin to an outer side wall of the uniform temperature plate;

[0026] welding the heat dissipation fin and the uniform temperature plate to fix the heat dissipation fin on the outer side wall of the uniform temperature plate.

[0027] As described above, due to the adoption of the above technical solutions, the uniform temperature plate has the following advantages:

[0028] The upper surface of the uniform temperature plate is provided with a dotting groove by rolling, the dotting groove is connected with the inner side of the bottom of the uniform temperature plate by rolling, the dotting groove supports the whole pipe body, the installation and use strength of the pipe body is improved, the deformation of the pipe body is avoided to affect the heat dissipation effect, the thickness of the dotting groove is basically the same as the thickness of the pipe body, the whole heat conduction of the uniform temperature plate is uniform, and the heat dissipation efficiency of the uniform temperature plate is controlled. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1It is the three-dimensional structure schematic diagram of the utility model;

[0030] Figure 2 It is the internal structure sectional view of the utility model;

[0031] Figure 3 It is the rolling rolling equipment structure schematic diagram of the utility model;

[0032] Figure 4 It is the heat dissipation fin structure schematic diagram of embodiment 1 of the utility model;

[0033] Figures 5-8 It is the simulation nephogram of control 1-3 and embodiment 1 in the comparative experiment of the utility model;

[0034] Figure 9 It is the heat dissipation fin structure schematic diagram of embodiment 2 of the utility model;

[0035] Figure 10 It is the heat dissipation fin structure schematic diagram of embodiment 3 of the utility model;

[0036] Figures 11-14 It is the simulation nephogram of control 1-3 and embodiment 3 in the comparative experiment of the utility model.

[0037] In the drawing, 1, first pipe body;2, second pipe body;3, dotting groove;4, first bending part;5, second bending part;6, first fold line type fin;7, second fold line type fin;8, third fold line type fin;9, fourth fold line type fin. Specific implementation

[0038] In order to make the purpose, technical scheme and advantage of the utility model more clear and obvious, the following preferred embodiments are referred to the drawing and are given, and the utility model is further explained in detail. However, it should be explained that, many details listed in the specification are only for making the reader have a thorough understanding of one or more aspects of the utility model, and even if there is no these specific details, the aspects of the utility model can be realized.

[0039] Please refer to Figures 1 to 14 The utility model provides a single side dotting's tubular uniform temperature plate, technical scheme is as follows:

[0040] As Figures 1-2As shown, a single-sided dotting pipe-type uniform temperature plate includes a first pipe body and a second pipe body, the first pipe body and the second pipe body are connected as a whole to form a hollow pipe. The outer side of the first pipe body is provided with a plurality of dotting grooves, the dotting grooves are formed by the outer side of the first pipe body being recessed inward, the bottom of the dotting groove is fixedly connected with the inner side of the second pipe body. By setting the dotting groove, the dotting groove plays a supporting role, which is equivalent to increasing the installation strength of the upper pipe body and the lower pipe body, so that the uniform temperature plate made is not easy to deform during installation and use, avoiding the influence of the heat dissipation performance caused by the deformation of the pipe body. And the dotting groove can be formed by rolling the first pipe body, so that the thickness of the dotting groove, the first pipe body and the second pipe body is basically the same, so that the heat conduction of the uniform temperature plate made is more uniform and stable, which is convenient for the control of the heat conduction rate, and ensures the heat dissipation effect while ensuring the strength. Among them, the extension line of the axis of the dotting groove and the axis of the first pipe body are crossly arranged, and the angle of the acute angle formed after the extension line of the axis of the dotting groove and the axis of the first pipe body cross is 15-45°. The axis of the dotting groove and the axis of the adjacent dotting groove along the longitudinal direction of the first pipe body are axially symmetrically arranged. The dotting groove is arranged in a long strip shape, a certain angle is formed between the axial direction of the dotting groove and the axial direction of the first pipe body, and the axis of the dotting groove and the axis of the adjacent dotting groove along the longitudinal direction of the first pipe body are axially symmetrically arranged, so that the dotting groove is more uniformly distributed on the first pipe body, and the first pipe body and the second pipe body are more uniformly supported, so that the overall strength of the uniform temperature plate made is uniform, avoiding deformation due to insufficient strength of a part, leading to heat conduction inclination of the uniform temperature plate, uneven heat conduction and affecting heat dissipation effect.

[0041] It should be noted that, as Figure 3As shown, the dotting groove is rolled by a rolling dotting device, the rolling dotting device comprises a first roller and a second roller, the first roller is located above the second roller. The surface of the first roller comprises a first rolling area and a first flat area, the first rolling area and the first flat area are sequentially arranged along the transverse direction of the first roller. A rolling groove group is arranged on the first rolling area, the rolling groove group comprises two rows of rolling groove columns arranged along the transverse direction of the first roller. Each row of rolling groove columns comprises a plurality of rolling grooves arranged along the circumferential direction of the first roller, and the rolling grooves are used to form the dotting groove in cooperation with the second roller. In order to improve the uniformity of the overall strength of the pipe body, the rolling groove is arranged in a strip shape, and the axis direction of the rolling groove forms a certain angle with the circumferential direction, and the angle is 15-45°. The adjacent two rolling grooves in the same column are arranged in different axial directions, and the axes of the adjacent two rolling grooves are arranged in axial symmetry, so as to improve the uniformity of the strength distribution of the pipe body. The second roller is arranged below the first roller, and the surface of the second roller comprises a second rolling area and a second flat area, the second rolling area and the second flat area are sequentially arranged along the transverse direction of the second roller. A rolling protrusion group is arranged on the second rolling area, the rolling protrusion group comprises two rows of rolling protrusion columns arranged along the transverse direction of the second roller. Each row of rolling protrusion columns comprises a plurality of rolling protrusions arranged along the circumferential direction of the second roller, and the rolling protrusions are arranged correspondingly with the rolling grooves, and the rolling protrusions are used to form the dotting groove in cooperation with the rolling grooves. When the sheet body passes between the first roller and the second roller, the sheet body is extruded by the second roller, so that the rolling protrusions on the second roller press the sheet body into the rolling grooves to form the dotting groove. When the first roller and the second roller rotate, the sheet body forms two rows of dotting groove columns along the longitudinal direction. Through the cooperation of the first roller and the second roller, the dotting groove can be quickly formed on the sheet body, and the one-time forming by rolling can improve the production efficiency.

[0042] The two ends of the first pipe body are inwardly inclined and bent to form a first bent portion, the two ends of the second pipe body are respectively inwardly bent to form a second bent portion, and the first bent portion and the second bent portion are sealingly connected. The first bent portion and the second bent portion can be pressed by a stamping device on the upper side and the lower side of one end at the same time, so that the upper side and the lower side of the end portion are tightly attached, and then the tightly attached upper side and lower side are welded. The other end is stamped and welded in the same way, so as to seal the two ends to form the uniform temperature plate.

[0043] Further, the liquid absorbing core is arranged on the inner side wall of the first pipe body and the outer side wall of the dotting groove. The liquid absorbing core is based on the capillary effect and the principle of liquid dynamics. When the liquid contacts the surface of the liquid absorbing core, the liquid is rapidly absorbed and diffused along the internal fiber network due to the small pore structure inside the liquid absorbing core, forming a "wicking" phenomenon. This effect enables the liquid to return to the evaporation end under the action of gravity, thereby facilitating heat transfer and circulation. The liquid absorbing core includes a metal mesh type or a metal sintering type. The metal mesh type is to attach a certain mesh of metal wire mesh to the inner side wall of the first pipe body and the outer side wall of the dotting groove. The metal sintering type includes powder sintering and fiber sintering. By arranging the liquid absorbing core, the heat transfer rate and the cooling liquid circulation are improved, and the heat dissipation efficiency is further improved.

[0044] As shown in Figure 4 The outer side wall of the first pipe body is provided with a heat dissipation fin, and the heat dissipation fin is fixedly connected with the first pipe body. The heat dissipation fin includes a first fold line type fin group and a second fold line type fin group, the first fold line type fin group and the second fold line type fin group are alternately arranged along the transverse direction of the first pipe body, the first fold line type fin group includes a plurality of first fold line type fins arranged in sequence along the longitudinal direction of the first pipe body, and the plurality of first fold line type fins are connected in sequence, the second fold line type fin group includes a plurality of second fold line type fins arranged in sequence along the longitudinal direction of the first pipe body, and the plurality of second fold line type fins are connected in sequence, and the peak width of the first fold line type fin is arranged in a staggered manner with the peak of the second fold line type fin. The heat dissipation fin is in contact with the first pipe body, and the heat dissipation fin can dissipate the heat of the first pipe body, thereby improving the heat dissipation effect. The peak width of the first fold line type fin of the heat dissipation fin is arranged in a staggered manner with the peak of the second fold line type fin, so that the first fold line type fin and the second fold line type fin form a staggered gap, air can flow through the staggered gap, and the heat dissipation effect of the heat dissipation fin is improved.

[0045] A single-sided dotting pipe-type heat spreader, characterized by comprising the following steps:

[0046] S1, selecting a planar base material, sequentially dividing the planar base material into a dotting area, a bending area and a planar area along the transverse direction, and rolling and dotting in the dotting area along the longitudinal direction of the planar base material to form a dotting groove by recessing from the surface of the planar base material to the inside;

[0047] S2, rolling out the connecting parts with curvature on both sides of the planar base material after rolling and dotting, the connecting parts are curved to the recess direction of the dotting groove, then rolling the middle part of the bending area to make the connecting parts on both sides of the planar base material close to each other to form a U-shaped material, and continue rolling until the connecting parts on both sides contact, then welding the connecting parts on both sides to form an O-shaped pipe body;

[0048] S3, the two opposite sides of the O-shaped tube body are rolled until the groove bottom of the dotting groove contacts the inner side of the flat area, the O-shaped tube body becomes an elliptical tube body, the elliptical tube body is cut to form a tube segment, the tube segment is cleaned and leak detection is performed;

[0049] S4, the contact part between the dotting groove and the flat area in the tube segment is welded, one end of the tube segment is punched to make the upper and lower sides of the end part tightly contact, and the contact part is welded to form a semi-sealed tube segment, liquid is introduced into the open end of the semi-sealed tube segment to test water, and after the water test, the semi-sealed tube segment is vacuumized from the open end and cooled liquid is injected;

[0050] S5, the open end of the semi-sealed tube segment is punched and welded to seal both ends of the tube segment, and a uniform temperature plate is formed.

[0051] By adopting the preparation process, the process is simple, the preparation efficiency is improved, and the process cost is reduced, and the uniform temperature plate with better heat dissipation performance can be prepared by the process.

[0052] The utility model carries out comparison experiment:

[0053] Under the same external shape size (120mm*26mm T=2mm), compared with the aluminum plate, the O-shaped tube without internal support and the harmonica tube with internal columnar support, the same heat source is adopted, the heat source condition is: size (10mm*10mm) heat flow (50w), without cooling condition, two-second instantaneous performance, and the following table 1 is obtained:

[0054] Table 1

[0055]

[0056] In table 1, comparative example 1 is an aluminum plate, comparative example 2 is an O-shaped tube, comparative example 3 is a harmonica tube, and example 1 is the uniform temperature plate of the utility model. As can be seen from table 1, the heat source temperature of the uniform temperature plate of the application decreases obviously, the heat dissipation effect is remarkable, the weight is smaller, and the heat dissipation performance is better. The simulation cloud picture is as shown in Figures 5-8 .

[0057] Embodiment 2

[0058] As shown in Figure 9 , the utility model provides a single face dotting tubular heat spreader, which is different from embodiment 1, in which the heat dissipation fin includes a third fold line type fin group, the third fold line type fin group includes a plurality of third fold line type fins arranged along the first tube body in sequence, the plurality of third fold line type fins are connected in sequence, and the wave crest of the third fold line type fin is arranged in a wave shape along the transverse direction of the first tube body. The wave-shaped heat dissipation fin improves the air circulation space, so that the air can carry away more heat of the heat dissipation fin, thereby improving the heat dissipation effect.

[0059] Embodiment 3

[0060] As Figure 10 shown, the utility model provides a single -sided dot of tubular uniform temperature board, and the difference with embodiment 1 is that, in this embodiment, the heat dissipation fin includes fourth fold line type fin group, and the fourth fold line type fin group includes a plurality of fourth fold line type fins arranged along the first tube transversely, and the plurality of fourth fold line type fins are sequentially connected, and the wave crest of the fourth fold line type fin is linearly arranged along the longitudinal direction of the first tube. The linear heat dissipation fin improves the heat dissipation efficiency, but is simple to manufacture, convenient for production and improves production efficiency.

[0061] The comparative experiment is made in this embodiment:

[0062] Under the same appearance size (120mm×26mm T=2mm), compared with the combination of aluminum plate and heat dissipation fin, the combination of O-shaped tube without internal support and heat dissipation fin and the combination of harmonica tube with internal columnar support and heat dissipation fin, the same heat source is used, and the heat source condition is: size (10mm×10mm) heat flow (50w), without cooling condition, two-second instantaneous performance, and the following table 2 is obtained:

[0063] Table 2

[0064]

[0065] In table 2, comparative example 1 is the combination of aluminum plate and heat dissipation fin, comparative example 2 is the combination of O-shaped tube and heat dissipation fin, comparative example 3 is the combination of harmonica tube and heat dissipation fin, and example 1 is the combination of the uniform temperature plate and heat dissipation fin of the utility model. As can be seen from table 2, the combination of the uniform temperature plate and heat dissipation fin of the utility model is obvious in heat source temperature drop, remarkable in heat dissipation effect, smaller in weight and better in heat dissipation performance compared with comparative examples 1-3. The simulation nephogram is as shown in Figures 11-14 .

[0066] The preferred embodiments of the utility model are described above, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the utility model, and these improvements and refinements should also be regarded as the protection scope of the utility model.

Claims

1. A single-sided dot patterned tube-type heat spreader, characterized by, The utility model provides a hollow tube, comprising a first tube body and a second tube body, the first tube body and the second tube body are integrated, and form the hollow tube; A plurality of dotting grooves are arranged on the outer side of the first tube body, the bottom of the dotting groove is fixedly connected with the inner side of the second tube body; The two ends of the first tube body are respectively inwardly inclined and curved to form a first bending part, the two ends of the second tube body are respectively inwardly curved to form a second bending part, and the first bending part is sealingly connected with the second bending part.

2. The single-sided dot-patterned tube-type heat spreader of claim 1, wherein: The extension line of the axis of the dotting groove and the axis of the first tube body are crossly arranged, and the acute angle formed after the extension line of the axis of the dotting groove and the axis of the first tube body cross is 15-45 degrees.

3. The single-sided dot-patterned tube-type heat spreader of claim 2, wherein: The axis of the dotting groove and the axis of the adjacent dotting groove along the longitudinal direction of the first tube body are axially symmetrically arranged.

4. The single-sided dot-patterned tube-type heat spreader of claim 1, wherein: The utility model also comprises a liquid absorbing core, which is fixedly arranged on the inner side wall of the first tube body and the outer side wall of the dotting groove.

5. The single-sided dot-patterned tube-type heat spreader of claim 1, wherein: A heat dissipation fin is arranged on the outer side wall of the first tube body, and the heat dissipation fin is fixedly connected with the first tube body.

6. The single-sided dot-patterned tube-type heat spreader of claim 5, wherein: The heat dissipation fin comprises a first fold line type fin group and a second fold line type fin group, and the first fold line type fin group and the second fold line type fin group are alternately arranged along the transverse direction of the first tube body. The first fold line type fin group comprises a plurality of first fold line type fins arranged in sequence along the longitudinal direction of the first tube body, and the plurality of first fold line type fins are integrally connected in sequence. The second fold line type fin group comprises a plurality of second fold line type fins arranged in sequence along the longitudinal direction of the first tube body, and the plurality of second fold line type fins are integrally connected in sequence. The wave crest of the first fold line type fin is arranged in a staggered manner with the wave crest of the second fold line type fin.

7. The single-sided dot-patterned tube-type heat spreader of claim 5, wherein: The heat dissipation fin comprises a third fold line type fin group, the third fold line type fin group comprises a plurality of third fold line type fins arranged in sequence along the longitudinal direction of the first tube body, and the plurality of third fold line type fins are integrally connected in sequence, and the wave crest of the third fold line type fin is arranged in a wave shape along the transverse direction of the first tube body.

8. The single-sided dot-patterned tube-type heat spreader of claim 5, wherein: The heat dissipation fin comprises a fourth fold line type fin group, the fourth fold line type fin group comprises a plurality of fourth fold line type fins arranged in sequence along the transverse direction of the first tube body, and the plurality of fourth fold line type fins are integrally connected in sequence, and the wave crest of the fourth fold line type fin is arranged in a straight line along the longitudinal direction of the first tube body.

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