Large-volume vapor chamber

Abstract

The utility model discloses a large-volume uniform temperature plate which comprises a plate main body and a connecting column. The plate main body is provided with an accommodating cavity, and the accommodating cavity is provided with two main cavity walls which are oppositely arranged; a connecting column is arranged on the plate body and comprises a supporting column section and two bearing sections, the two bearing sections are connected to the two ends of the supporting column section respectively, the supporting column section and the bearing sections are both located between the two main cavity walls, and the two bearing sections abut against the two main cavity walls in a one-to-one correspondence mode respectively. The cross section area of the supporting column section perpendicular to the central axis of the connecting column is smaller than the cross section area of the bearing section perpendicular to the central axis of the connecting column. Due to the fact that the cross sectional area of the supporting column section is smaller than that of the bearing section, the size of the supporting column section is reduced, occupied space of the containing cavity by the connecting column is reduced, the effective volume of the containing cavity is increased so as to contain more capillary structures and liquid heat-conducting media, and the heat-conducting performance of the vapor chamber is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of uniform temperature plate, in particular to a large capacity uniform temperature plate. BACKGROUND

[0002] The uniform temperature plate is mainly used for electronic products and equipment needing rapid heat dissipation and high heat flux. Some existing uniform temperature plates include a plate main body and a connecting column, the plate main body is usually formed by stacking and connecting two component plates, the plate main body has a containing cavity, the containing cavity has two opposite main cavity walls, the two ends of the connecting column are respectively abutted and connected to the two main cavity walls of the containing cavity, the two main cavity walls are supported and fixed, and the containing cavity is filled with capillary structures and liquid heat conducting medium. At present, the connecting column needs to occupy more containing cavity space, which affects the heat conduction performance of the uniform temperature plate, and the heat conduction performance of the uniform temperature plate still has room for improvement. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art. To this end, the utility model provides a large capacity uniform temperature plate, which can reduce the occupation of the containing cavity space by the connecting column and improve the heat conduction performance of the uniform temperature plate.

[0004] According to the large capacity uniform temperature plate provided by the utility model, the plate main body is provided with a containing cavity, the containing cavity has two opposite main cavity walls, the connecting column is arranged on the plate main body, the connecting column includes a support column segment and two supporting segments, the two supporting segments are respectively connected to the two ends of the support column segment, the support column segment and the supporting segments are located between the two main cavity walls, the two supporting segments are respectively in one-to-one correspondence with the two main cavity walls and abut against the two main cavity walls, and the cross-sectional area of the support column segment perpendicular to the central axis of the connecting column is smaller than the cross-sectional area of the supporting segment perpendicular to the central axis of the connecting column.

[0005] According to the large capacity uniform temperature plate provided by the utility model, at least the following advantages are obtained: the support column segment and the supporting segments of the connecting column are located in the containing cavity, the connecting column supports the two main cavity walls in one-to-one correspondence through the two supporting segments, the supporting segments can maintain sufficient support connection strength with the corresponding main cavity walls, the cross-sectional area of the support column segment is smaller than that of the supporting segment, so that the volume of the support column segment is reduced, the occupation of the containing cavity space by the connecting column is reduced, the effective volume of the containing cavity is improved to accommodate more capillary structures and liquid heat conducting medium, and the heat conduction performance of the uniform temperature plate is improved.

[0006] According to some embodiments of the utility model, the supporting segments and the support column segment are both cylindrical, the diameter of the support column segment is smaller than that of the supporting segment, and the central axis of the supporting segment and the central axis of the support column segment are coaxially arranged.

[0007] According to some embodiments of this utility model, the diameter of the supporting section is A, which satisfies A≥1mm, and the diameter of the support section is B, which satisfies B≥0.5mm.

[0008] According to some embodiments of this utility model, the dimension of the supporting section along the central axis of the connecting column is C, and the dimension of the support section along the central axis of the connecting column is D, satisfying D>0.2(2*C+D).

[0009] According to some embodiments of this utility model, the dimension of the supporting section along the central axis of the connecting column is C, which satisfies C > 0.2 mm.

[0010] According to some embodiments of the present invention, the main cavity wall is provided with an installation through hole, and the connecting column further includes two plug-in sections. The two plug-in sections are respectively connected to the side of the two supporting sections away from the support column section. The plug-in sections are inserted into the installation through hole one by one, and the plug-in sections are welded to the plate body.

[0011] According to some embodiments of this utility model, both the insertion segment and the support segment are cylindrical, the diameter of the support segment is larger than the diameter of the insertion segment and the diameter of the mounting through hole, and the central axis of the insertion segment is coaxial with the central axis of the support segment.

[0012] According to some embodiments of the present invention, the end of the insertion segment facing away from the accommodating cavity is exposed in the plate body.

[0013] According to some embodiments of the present invention, the plate body includes two component plates, one side of which is provided with a groove. The two component plates are stacked and welded together. The grooves of the two grooves are joined together and enclosed to form the receiving cavity. The bottom wall of the groove forms the main cavity wall. The two main cavity walls are parallel to each other.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a three-dimensional schematic diagram of the temperature distribution plate according to an embodiment of the present utility model;

[0017] Figure 2 This is an embodiment of the present utility model. Figure 1 A cross-sectional view along the FF direction;

[0018] Figure 3 An explosion schematic view of the uniform temperature plate of the embodiment of the present application;

[0019] Figure 4 A front view schematic view of the connecting column of the embodiment of the present application.

[0020] Reference signs:

[0021] The plate main body 100, the accommodating cavity 110, the main cavity wall 120, the mounting through hole 130, the component plate 140, the groove 141.

[0022] The connecting column 200, the support column section 210, the bearing section 220, the plug-in section 230.

[0023] The central axis 300 of the connecting column. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0025] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0026] In the description of the present application, the plural refers to two or more. If there is a description of first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0027] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical solution.

[0028] Since the uniform temperature plate needs to go through the vacuumizing step during production, the connecting column 200 is usually arranged in the plate main body 100, and the connecting column 200 can support the opposite two main cavity walls 120 of the accommodating cavity 110, so as to avoid defects such as concave of the uniform temperature plate.

[0029] Reference Figures 1 to 4The utility model discloses a large capacity uniform temperature plate, including board main body 100 and connecting column 200. Board main body 100 is provided with the accommodation cavity 110, and the accommodation cavity 110 has two opposite main cavity wall 120 of setting, connecting column 200 sets up in board main body 100, and connecting column 200 includes the column segment 210 and two support sections 220, and two support sections 220 are connected to the both ends of column segment 210 respectively, and column segment 210 and support section 220 are all located between two main cavity wall 120, and two support sections 220 correspondingly abut with two main cavity wall 120 respectively, and the cross section area of column segment 210 perpendicular to the central axis of connecting column 200 is less than the cross section area of support section 220 perpendicular to the central axis of connecting column 200.

[0030] The column segment 210 and support section 220 of connecting column 200 are located in the accommodation cavity 110, and connecting column 200 supports two main cavity wall 120 correspondingly through two support sections 220, and support section 220 can keep enough support connection intensity with corresponding main cavity wall 120, and because the cross section area of column segment 210 is less than the cross section area of support section 220, the volume of column segment 210 is reduced, thereby reducing the space occupation of connecting column 200 to the accommodation cavity 110, and the effective volume of the accommodation cavity 110 is improved to accommodate more capillary structures and liquid heat conducting medium, thereby improving the heat conducting performance of the uniform temperature plate.

[0031] Specifically, support section 220 and column segment 210 are both cylindrical, the diameter of column segment 210 is less than the diameter of support section 220, and the central axis of support section 220 and the central axis of column segment 210 are coaxially arranged. Support section 220 and column segment 210 are both cylindrical, and the central axes thereof are coaxial, so that the stress of column segment 210 and support section 220 is relatively stable, and the machining difficulty of connecting column 200 is low, and the structure is relatively simple.

[0032] It can be understood that, in some embodiments, support section 220 and column segment 210 can also be other shapes, such as prismatic, etc., which can be specifically configured by those skilled in the art according to actual needs.

[0033] In the embodiment, the diameter of support section 220 is A, which satisfies A≥1mm, and the diameter of column segment 210 is B, which satisfies B≥0.5mm. The above structure satisfies the minimum size use requirement of the conventional connecting column 200, avoids the situation that the size of connecting column 200 is too small and cannot support the two main cavity walls 120, and saves materials. Specifically, the diameter of support section 220 and the diameter of column segment 210 can be specifically configured by those skilled in the art according to actual needs.

[0034] In the embodiment, the size of the supporting section 220 along the central axis of the connecting column 200 is C, and the size of the supporting section 210 along the central axis of the connecting column 200 is D, which satisfies D>0.2(2*C+D). The above structure makes the size of the supporting section 210 along the central axis of the connecting column 200 relatively sufficient, which is beneficial to sufficiently reduce the volume of the connecting column 200 occupying the accommodating cavity 110, greatly improve the effective volume of the accommodating cavity 110, and reduce the difficulty of machining the supporting section 210, avoiding the risk of difficulty in machining due to the shortness of the supporting section 210.

[0035] In the embodiment, the size of the supporting section 220 along the central axis of the connecting column 200 is C, which satisfies C>0.2mm. The above structure, when applied to a conventional vapor chamber, can make the structural strength of the supporting section 220 sufficient to support the corresponding main cavity wall 120. It can be understood that the size of the supporting section 220 along the central axis of the connecting column 200 can be specifically selected by the person skilled in the art according to actual needs.

[0036] In the embodiment, the main cavity wall 120 is provided with a mounting through hole 130, and the connecting column 200 further includes two plug-in sections 230, which are respectively connected to the sides of the two supporting sections 220 away from the supporting section 210. The plug-in section 230 is correspondingly inserted into the mounting through hole 130, and the plug-in section 230 is welded to the plate body 100. After the connecting column 200 is inserted into the mounting through hole 130 through the plug-in section 230, it is welded and combined with the surrounding area of the mounting through hole 130, so that the connecting strength of the connecting column 200 and the plate body 100 is high, and the connecting column 200 is not easy to loosen, and the welding seam does not appear in the accommodating cavity 110, avoiding affecting the internal structure of the accommodating cavity 110, so that the welding strength of the connecting column 200 and the plate body 100 of the present scheme is basically the same as that of the conventional vapor chamber.

[0037] In the embodiment, the plug-in section 230 and the supporting section 220 are both cylindrical, the diameter of the supporting section 220 is greater than the diameter of the plug-in section 230 and the diameter of the mounting through hole 130, and the central axis of the plug-in section 230 is coaxially arranged with the central axis of the supporting section 220. The above structure of the connecting column 200 is relatively simple, which is convenient for machining the plug-in section 230 and the mounting through hole 130 by machining, and has good processability. In addition, the supporting section 220 can also close the end of the mounting through hole 130 close to the accommodating cavity 110, improving the sealing effect of the accommodating cavity 110.

[0038] It can be understood that in some embodiments, the plug-in section 230 can also be other shapes, such as prismatic, etc., which can be specifically configured by the person skilled in the art according to actual needs.

[0039] In the embodiment, the end of the insertion section 230 away from the accommodating cavity 110 is exposed outside the plate body 100, so that the position of the insertion section 230 can be directly found from the outside of the plate body 100 for welding, and the exposed end of the insertion section 230 and the plate body 100 are welded and fixed, facilitating the welding of the two.

[0040] In the embodiment, the accommodating cavity 110 of the vapor chamber is relatively flat and large in area, so that a plurality of connecting columns 200 are generally needed to support and fix the main cavity wall 120 of the accommodating cavity 110, so that the overall structural strength of the vapor chamber is good. In actual use, the arrangement between the connecting columns 200 can be irregular, and the arrangement can be specifically arranged according to actual needs. Of course, in some cases, the arrangement can also be regular and uniform, and a person skilled in the art can specifically configure according to actual needs.

[0041] In the embodiment, the plate body 100 includes two component plates 140, one side of the component plate 140 is provided with a groove 141, and the two component plates 140 are stacked and welded. The openings of the two grooves 141 are butted and enclosed to form the accommodating cavity 110, the bottom wall of the groove 141 forms the main cavity wall 120, and the two main cavity walls 120 are parallel to each other. The plate body 100 is formed by welding the two component plates 140, the two component plates 140 each have a groove 141, and the production difficulty of the plate body 100 is low.

[0042] Specifically, the two component plates 140 include one cover plate and one bottom plate. In the production of the vapor chamber, the groove 141 is first machined or etched on one side of the component plate 140, and the connecting column 200 is separately machined. Then, the insertion section 230 at one end of the connecting column 200 is inserted into the mounting through hole 130 of the bottom plate, and the exposed end of the insertion section 230 is welded and fixed to the bottom plate. Then, the capillary structure is formed in the groove 141 of the cover plate and the bottom plate, respectively. Then, the cover plate and the bottom plate are stacked, and the insertion section 230 at the other end of the connecting column 200 is also inserted into the mounting through hole 130 of the cover plate. Then, the exposed end of the insertion section 230 is welded and fixed to the cover plate. Then, the outer periphery of the bottom plate and the cover plate is welded and connected. Then, the liquid injection port of the plate body 100 is vacuumized and injected with liquid heat-conducting medium. Then, the liquid injection port of the plate body 100 is closed, and the production of the vapor chamber is completed.

[0043] In the embodiment, the liquid heat-conducting medium is water. It can be understood that in other embodiments, the liquid heat-conducting medium can also be made of other materials, and a person skilled in the art can specifically configure according to actual needs.

[0044] Specifically, the capillary structure can be made of, for example, copper powder sintering or copper mesh.

[0045] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A large volume heat spreader characterized by, The plate body (100) is provided with a containing cavity (110) having two oppositely arranged main cavity walls (120). The connecting column (200) is arranged on the plate body (100), and the connecting column (200) comprises a support segment (210) and two supporting segments (220) connected to two ends of the support segment (210), respectively. The support segment (210) and the supporting segment (220) are located between the two main cavity walls (120), and the two supporting segments (220) correspondingly abut against the two main cavity walls (120), respectively. The cross-sectional area of the support segment (210) perpendicular to the central axis of the connecting column (200) is smaller than the cross-sectional area of the supporting segment (220) perpendicular to the central axis of the connecting column (200). The supporting segment (220) and the support segment (210) are both cylindrical, the diameter of the support segment (210) is smaller than the diameter of the supporting segment (220), and the central axis of the supporting segment (220) and the central axis of the support segment (210) are coaxially arranged.

2. The large-volumetric heat spreader of claim 1, wherein: The diameter of the supporting segment (220) is A, which satisfies A≥1mm, and the diameter of the support segment (210) is B, which satisfies B≥0.5mm.

3. The large-volumetric heat spreader of claim 2, wherein: The size of the supporting segment (220) along the central axis direction of the connecting column (200) is C, and the size of the support segment (210) along the central axis direction of the connecting column (200) is D, which satisfies D>0.2(2*C+D).

4. The large-volumetric heat spreader of claim 2, wherein: The size of the supporting segment (220) along the central axis direction of the connecting column (200) is C, which satisfies C>0.2mm.

5. The large vapor chamber of claim 2, wherein: The main cavity wall (120) is provided with a mounting through hole (130), and the connecting column (200) further comprises two plug-in segments (230) connected to the sides of the two supporting segments (220) away from the support segment (210), respectively. The plug-in segment (230) is correspondingly inserted into the mounting through hole (130), and the plug-in segment (230) is welded with the plate body (100).

6. The large vapor chamber of claim 1, wherein: The plug-in segment (230) and the supporting segment (220) are both cylindrical, the diameter of the supporting segment (220) is greater than the diameter of the plug-in segment (230) and the diameter of the mounting through hole (130), and the central axis of the plug-in segment (230) is coaxially arranged with the central axis of the supporting segment (220).

7. The large-volumetric heat spreader of claim 6, wherein: The end of the plug-in segment (230) away from the containing cavity (110) is exposed on the plate body (100).

8. The large-vapor-chamber plate according to claim 6, characterized by: The plate body (100) comprises two component plates (140), one side of the component plate (140) is provided with a groove (141), and the two component plates (140) are stacked and welded. The grooves (141) are abutted and enclosed to form the containing cavity (110), the bottom wall of the groove (141) forms the main cavity wall (120), and the two main cavity walls (120) are parallel to each other.

9. The large vapor chamber of claim 1, wherein: ​

Images