Novel vapor chamber

Abstract

A novel vapor chamber comprises a first cover plate (100) and a second cover plate (200), a cavity (300) is formed between the first cover plate (100) and the second cover plate (200), the cavity (300) is filled with cooling liquid, the first cover plate (100) comprises a plurality of conical structure parts (101) and a plurality of straight parts (102), and the conical structure parts (101) and the straight parts (102) are alternately arranged; the first cover plate (100) is provided with a first capillary structure (500), the second cover plate (200) is provided with a second capillary structure (600), and supporting columns (700) are arranged between the straight portions (102) and the second cover plate (200). The first cover plate comprises a plurality of conical structure parts and a plurality of straight parts, wherein the conical structure parts and the straight parts are alternately arranged; after the cooling liquid steam is cooled and liquefied, the conical structure parts of the conical structure are favorable for improving the liquefaction speed and the circulation speed of the cooling liquid, so that the circulation speed of the cooling liquid is greater than the heat flow transmission speed of a heat source, and the stable performance of the heat source is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of vapor chambers, in particular to a novel vapor chamber. Background Art

[0002] With the rapid development of electronic technology, the size of electronic components is getting smaller and smaller, and the heat generation per unit area is getting larger and larger, so the demand for heat dissipation is increasing day by day. Air cooling is limited by the properties of air itself and is difficult to meet the heat dissipation requirements of current electronic components. A vapor chamber can utilize the latent heat during the boiling of a phase-change working fluid to achieve a higher heat dissipation flux density and heat transfer efficiency, and is considered an effective alternative to air cooling.

[0003] The vapor chamber structure in the prior art, as Figure 1 shown, is used to transfer the heat of a heat source (evaporation end) to a heat dissipation surface (condensation end), and includes a bottom plate and a cover plate. A chamber is formed between the bottom plate and the cover plate. A number of support structures for supporting the lower bottom plate and the upper cover plate are provided in the chamber. The area in the chamber other than the support structures forms a steam channel. It also includes a capillary structure at the edge of the chamber. The chamber is filled with a coolant, and the coolant circulates in the steam channel. Under the internal structure design of the aforementioned vapor chamber, the liquefaction speed of the coolant vapor when it meets cold is slow, and often the coolant circulation speed cannot keep up with the heat flux transmission speed of the heat source, resulting in a decline in the performance of the heat source and unable to meet the increasingly high requirements of electronic components for the vapor chamber.

[0004] Therefore, the prior art needs to be improved. Summary of the Utility Model

[0005] Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide a novel vapor chamber with a fast liquefaction speed when meeting cold and an improved coolant circulation speed.

[0006] The utility model realizes the above purpose by the following technical means:

[0007] A novel vapor chamber includes a first cover plate and a second cover plate which are oppositely arranged. A chamber is formed between the first cover plate and the second cover plate. The chamber is filled with a coolant. The first cover plate includes a number of conical structure parts and a number of straight parts, and the conical structure parts and the straight parts are arranged alternately; a first capillary structure is arranged on the side of the first cover plate facing the second cover plate, a second capillary structure is arranged on the side of the second cover plate facing the first cover plate, and a support column is arranged between each of the straight parts and the second cover plate.

[0008] As a further scheme of the utility model, the first capillary structure is a 3D woven or 2D woven metal mesh, metal foam or metal powder.

[0009] As a further solution of the present utility model, the second capillary structure is a 3D woven or 2D woven metal mesh, metal foam or metal powder.

[0010] As a further solution of the present utility model, a plurality of capillary structures are provided on the end surface of the support column close to the first cover plate.

[0011] As a further solution of the present utility model, the capillary structure is a strip-shaped groove, and the strip-shaped groove penetrates through the end surface of the support column close to the first cover plate in the horizontal direction.

[0012] As a further solution of the present utility model, the conical structure portion includes a horizontal portion, a first inclined portion and a second inclined portion symmetrically arranged about the central axis of the horizontal portion, and one ends of the first inclined portion and the second inclined portion in the same direction are connected to both ends of the horizontal portion.

[0013] As a further solution of the present utility model, both ends of the first cover plate and the second cover plate are connected together by an end plate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] Due to the above structural design, that is, the first cover plate includes a plurality of conical structure portions and a plurality of straight portions, and the conical structure portions and the straight portions are alternately arranged; after the coolant vapor is cooled and liquefied, the conical structure portions help to improve the liquefaction speed and circulation speed of the coolant, so that the coolant circulation speed is greater than the heat source heat flux transmission speed, ensuring the stable performance of the heat source. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 is a schematic structural diagram of a heat pipe in the prior art;

[0017] Attached Figure 2 is a side sectional view of an embodiment of the present utility model;

[0018] Attached Figure 3 is a top sectional view of an embodiment of the present utility model;

[0019] Attached Figure 4 is a schematic diagram when an embodiment of the present utility model is applied.

[0020] The reference numerals in the drawings are respectively:

[0021] 100 - first cover plate, 200 - second cover plate, 300 - chamber, 400 - end plate, 500 - first capillary structure, 600 - second capillary structure, 700 - support column;

[0022] 101 - conical structure portion, 102 - straight portion;

[0023] 701 - Bar-shaped groove;

[0024] 1011 - Horizontal part, 1012 - First inclined part, 1013 - Second inclined part;

[0025] 1000 - Electronic device. Detailed implementation manners

[0026] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0029] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0030] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0031] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0032] Embodiment:

[0033] As Figures 2-4 shown, a novel heat pipe of the present application includes a first cover plate 100 and a second cover plate 200 which are oppositely arranged. Both the first cover plate 100 and the second cover plate 200 are made of materials with high thermal conductivity characteristics, such as copper, aluminum, aluminum alloy, etc. During application, the second cover plate 200 is attached to the heat generating surface of the electronic device 1000; both ends of the first cover plate 100 and the second cover plate 200 are connected together through an end plate 400; of course, the first cover plate and the second cover plate can also be connected in the following way: a first folded edge extends by bending from the edge of the first cover plate towards the second cover plate, and a second folded edge extends by bending from the edge of the second cover plate towards the first cover plate, and the ends of the first folded edge and the second folded edge are connected into one body by welding.

[0034] A chamber 300 is formed between the first cover plate 100 and the second cover plate 200, and a coolant is filled in the chamber. The coolant is water. Of course, it can also be acetone, ethylene glycol, etc.; the first cover plate 100 includes four conical structure parts 101 and five straight parts 102, and the conical structure parts 101 and the straight parts 102 are alternately arranged. Due to the above structural design, the surface of the first cover plate 100 facing the second cover plate 200 not only increases the liquid cooling area, but also helps to improve the liquefaction speed and circulation speed of the coolant after the coolant vapor is cooled and liquefied, so that the coolant circulation speed is greater than the heat flow transmission speed of the heat source, ensuring the stable performance of the heat source.

[0035] On one side of the first cover plate 100 facing the second cover plate 200, a first capillary structure 500 is provided. The first capillary structure 500 is a 3D woven or 2D woven metal mesh, metal foam or metal powder; on one side of the second cover plate 200 facing the first cover plate 100, a second capillary structure 600 is provided. The second capillary structure 600 is a 3D woven or 2D woven metal mesh, metal foam or metal powder; it is used to enable the rapid reflux of the coolant and enhance the reflux ability of the coolant in actual use.

[0036] Support columns 700 for supporting are provided between these straight portions 102 and the second cover plate 200, which are used to improve the strength of the device, prevent the first cover plate 100 from contacting the second cover plate 200 when the device is under pressure, ensure the smooth flow of the coolant inside the first cover plate 100 and the second cover plate 200, and thus ensure the heat conduction efficiency.

[0037] As a preferred mode of this embodiment, a plurality of capillary structures are provided on the end face of the support column 700 close to the first cover plate 100. The capillary structures are strip-shaped grooves 701. The strip-shaped grooves 701 penetrate through the end face of the support column 700 close to the first cover plate 100 in the horizontal direction. By providing a plurality of strip-shaped grooves 701 on the end face of the support column 700 close to the first cover plate 100, it is further convenient for the reflux of the coolant.

[0038] Specifically, the conical structure portion 101 includes a horizontal portion 1011, a first inclined portion 1012 and a second inclined portion 1013 symmetrically arranged about the central axis of the horizontal portion 1011. One ends of the first inclined portion 1012 and the second inclined portion 1013 in the same direction are connected to both ends of the horizontal portion 1011. The other end of the first inclined portion 1012 relative to the horizontal portion 1011 is connected to an adjacent straight portion, and the other end of the second inclined portion 1013 relative to the horizontal portion 1011 is connected to an adjacent straight portion.

[0039] In summary, through the above structural design, the present utility model solves the deficiencies in the prior art and has the characteristics of reasonable structure, fast cold liquefaction speed, fast circulation speed, etc.

[0040] As a further solution of the present utility model, the technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0041] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A novel temperature equalizing plate, comprising a first cover plate (100) and a second cover plate (200) arranged opposite to each other, a chamber (300) being formed between the first cover plate (100) and the second cover plate (200), the chamber (300) being filled with a cooling liquid, characterized in that: The first cover plate (100) comprises a plurality of conical structure portions (101) and a plurality of straight portions (102), wherein the conical structure portions (101) and the straight portions (102) are arranged alternately; a first capillary structure (500) is arranged on a side of the first cover plate (100) facing the second cover plate (200), a second capillary structure (600) is arranged on a side of the second cover plate (200) facing the first cover plate (100), and a support column (700) is arranged between each of the straight portions (102) and the second cover plate (200).

2. The novel temperature equalizing plate according to claim 1 is characterized in that: The first capillary structure (500) is a 3D woven or 2D woven metal mesh, foamed metal or metal powder.

3. The novel temperature equalizing plate according to claim 1 is characterized in that: The second capillary structure (600) is a 3D woven or 2D woven metal mesh, foamed metal or metal powder.

4. The novel temperature equalizing plate according to claim 1 is characterized in that: A plurality of capillary structures are arranged on the end surface of the support column (700) close to the first cover plate (100).

5. The novel temperature equalizing plate according to claim 4 is characterized in that: The capillary structure is a strip-shaped groove (701), and the strip-shaped groove (701) runs through the end surface of the support column (700) close to the first cover plate (100) in a horizontal direction.

6. The novel temperature equalizing plate according to any one of claims 1 to 4, characterized in that: The conical structure portion (101) comprises a horizontal portion (1011) and a first inclined portion (1012) and a second inclined portion (1013) symmetrically arranged about the central axis of the horizontal portion (1011); an end of the first inclined portion (1012) and the second inclined portion (1013) in the same direction is connected to two ends of the horizontal portion (1011).

7. The novel temperature equalizing plate according to claim 6 is characterized in that: Both ends of the first cover plate (100) and the second cover plate (200) are connected together via an end plate (400).

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