TW202419807A - Repeated-bending vapor chamber structure - Google Patents

Abstract

A repeated-bending vapor chamber structure having a first plate-body and a second plate-body is provided. The first plate-body has a first sealing-edge and a first inner-surface and is covered with a first capillary layer. The second plate-body has a second sealing-edge and a second inner-surface provided with a plurality of support columns and a plurality of second capillary layers arranged between the support columns. The first and second plate-body are stacked relative to each other to form two heat-exchanged areas and a repeated-bending area connected between the heat-exchanged areas. A plurality of fine grooves are arranged at intervals on an outer surface of the repeated-bending area to provide a certain degree of flexibility in the repeated-bending area of the vapor chamber without damaging structures of the first and second plate-body.

Description

Bendable temperature-averaging plate structure

The present invention relates to a temperature balancing plate, and in particular to a bendable temperature balancing plate structure.

As 3C products are becoming thinner and lighter, touch screens not only make it easier to operate intuitively, but also more convenient to carry. However, in terms of operation, it often depends on the size of the screen to provide better visual perception and clarity.

The existing heat spreaders used in the above-mentioned 3C products are often only attached to the heat source of the above-mentioned electronic products; for example, a larger heat spreader is attached to each electronic heating element on the back of the screen to meet the heat dissipation needs. However, with the continuous evolution of the above-mentioned 3C products, such as the birth of new products such as curved screens or rollable screens, the heat spreaders required for heat dissipation or cooling also need to be designed accordingly. Existing heat spreaders often only consider the internal capillary structure in bending, and the board itself is only made of materials with better flexibility. Therefore, a better structural design for the board itself is not proposed to meet the flexibility provided by its structure.

In view of this, the inventors of the present invention have conducted intensive research and applied theories to improve and solve the above-mentioned deficiencies, and finally proposed the present invention which has a reasonable design and effectively improves the above-mentioned deficiencies.

The main purpose of the present invention is to provide a bendable heat absorbing plate structure, which is designed in a structure with a plurality of fine lines distributed on the outer surface of the heat absorbing plate body, so that it can generate a certain flexibility without destroying the plate body structure, thereby making the heat absorbing plate suitable for bendable or rollable electronic heating products or their occasions.

In order to achieve the above-mentioned purpose, the present invention provides a bendable temperature-averaging plate structure, comprising a first plate body and a second plate body stacked on the first plate body, wherein a closed hollow is formed between the first plate body and the second plate body; the first plate body has a first sealing edge surrounding its periphery, and a first inner surface surrounded by the first sealing edge is formed on the first plate body to cover a first capillary layer; and the second plate body also has A second sealing edge surrounds the periphery thereof, and a second inner surface surrounded by the second sealing edge is formed on the second plate body, and a plurality of supporting columns and a plurality of second capillary layers arranged between the supporting columns are arranged on the second inner surface; wherein the first and second plate bodies are relatively stacked and have two heat exchange areas and a bendable area, the bendable area is connected between the two heat exchange areas, and the outer surface of the bendable area is provided with a plurality of fine lines arranged at intervals.

In order to enable the Honorable Review Committee to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the attached drawings are only provided for reference and explanation and are not used to limit the present invention.

Please refer to Figures 1 and 2, which are the three-dimensional exploded view and three-dimensional assembled view of the present invention respectively. The present invention provides a bendable temperature-averaging plate structure, including a first plate body 1 and a second plate body 2; wherein:

Please refer to FIG. 3 , the first plate body 1 has a first edge seal 10 surrounding its periphery, and a first inner surface 100 surrounded by the first edge seal 10 is formed on the first plate body 1. The first inner surface 100 may be concave so that a first capillary layer 11 is covered on the inner surface of the first plate body 1. The first capillary layer 11 may be formed by sintering a metal mesh or powder.

As mentioned above, the second plate body 2 is stacked on the first plate body 1 and forms a closed hollow shape with the first plate body 1. The second plate body 2 has a second edge seal 20 surrounding its periphery, and a second inner surface 200 surrounded by the second edge seal 20 is formed on the second plate body 2. The second inner surface 200 may also be concave, so as to be stacked opposite to the first plate body 1 to form the aforementioned closed hollow shape; more specifically, the first edge seal 10 of the first plate body 1 is stacked opposite to the second edge seal 20 of the second plate body 2, and the first and second edge seals 10, 20 of the first and second plates 1, 2 may be closely fitted to each other by methods such as laser welding. In addition, the first inner surface 100 and the second inner surface 200 of the first and second plates 1 and 2 can be either concave or flat, or both concave, so that the first and second plates 1 and 2 can be stacked relative to each other to form a closed hollow shape.

Please refer to FIGS. 1 to 4 together. The second inner surface 200 of the second plate 2 is provided with a plurality of supporting columns 21 and a plurality of second capillaries 22 arranged between the supporting columns 21. As shown in FIG. 2, after the first and second plates 1 and 2 are stacked relative to each other, the temperature averaging plate of the present invention can be divided into two heat exchange areas C1 and C2 and a bendable area F. The bendable area F is connected between the two heat exchange areas C1 and C2. The two heat exchange areas C1 and C2 can be used as evaporation and condensation areas inside the temperature averaging plate, respectively. As shown in FIG. 1 and FIG. 4 , each second capillary layer 22 is attached to the second inner surface 200 of the second plate body 2 along the straight line direction between the two heat exchange zones C1 and C2 and through the bendable zone F, and each second capillary layer 22 is arranged at intervals, so that the supporting columns 21 are arranged in a plurality of rows along the intervals between each second capillary layer 22. Specifically, each row of supporting columns 21 is spaced apart by a width W, so that each second capillary layer 22 is arranged between any two rows of supporting columns 21, and at the same time, the supporting columns 21 in any row are arranged at intervals with a large interval D and a small interval d.

As mentioned above, as shown in FIG. 1 and FIG. 2 , the support columns 21 are arranged at the large spacing D in the second heat exchange zones C1 and C2, and at the small spacing d in the bendable zone F; in other words, the arrangement spacing of the support columns 21 in the second heat exchange zones C1 and C2 is greater than the arrangement spacing in the bendable zone F. There is no restriction on whether the spacing of the support columns 21 in the second heat exchange zones C1 and C2 needs to be consistent.

Furthermore, as shown in FIG. 2 to FIG. 4 , the present invention provides a plurality of fine lines 101, 201 arranged at intervals on the outer surfaces of the bendable areas F of the first and second plates 1, 2, and the spacing arrangement direction of the fine lines 101, 201 is between the two heat exchange areas C1, C2. As shown in FIG. 4 , the cross section of each fine line 101, 201 may be in a "V" shape, and its depth h is about 1/10 to 1/2 of the thickness T of the first and second plates 1, 2, preferably 1/20 to 1/15, and the thickness T of the first and second plates 1, 2 is the distance from the first and second inner surfaces 100, 200 to the outer surface; for example, if the thickness T of the first and second plates 1, 2 is 0.6 mm, the depth h of the fine lines 101, 201 may be 0.06 mm to 0.30 mm, preferably 0.03 mm to 0.04 mm. In this way, the first and second plates 1, 2 can be provided with a certain degree of flexibility in the bendable area F without destroying the structure of the plates 1, 2. In addition, the second capillary layer 22 of the second plate 2 may also be made of a metal mesh or a fiber bundle. Furthermore, the pores of the second capillary layer 22 are coarser than the pores of the first capillary layer 11 of the first plate 1. Specifically, in the embodiment of the present invention, the first capillary layer 11 may be sintered from powder with finer particles or formed through a woven mesh with finer wire diameter, while the second capillary layer 22 may be formed from a woven mesh with coarser wire diameter or a fiber bundle.

Therefore, by means of the above-mentioned structural composition, the bendable temperature-averaging plate structure of the present invention can be obtained.

Accordingly, as shown in FIG3 and FIG4, when the first and second plates 1 and 2 are stacked and sealed, each support column 21 of the second plate 2 can be pressed against the first capillary layer 11 of the first plate 1. As shown in FIG5, when the temperature-averaging plate of the present invention is bent, the second plate 2 is bent toward the first plate 1, and since the support columns 21 in the bendable area F are arranged with a small spacing d (as shown in FIG1), the first capillary layer 11 in the bendable area F can be pressed against by more dense support columns 21 to maintain its adhesion to the first inner surface 100 of the first plate 1, and each second capillary layer 22 itself is arranged at intervals, so there is a certain spacing between each other to withstand bending. In addition, the plurality of fine lines 101, 201 provided on the outer surface of the first and second plates 1, 2 in the bendable area F allow the first and second plates 1, 2 to provide a certain degree of flexibility in the bendable area F, while preventing the first and second plates 1, 2 from being cracked due to bending, thereby rendering the temperature equalizing plate unusable.

In addition, as shown in FIG6 and FIG7, the present invention can further coat a rubber layer 3 in the above-mentioned fine lines 101, 201, and the rubber layer 3 can be made of a flexible material such as epoxy. The rubber layer 3 can be used to fill the fine lines 101, 201 (as shown in FIG6), or further formed on the outer surface of the first and second plates 1, 2 in a thinned thickness t (about 0.01mm to 0.20mm) (as shown in FIG7), so as to protect the outer surface of the temperature equalization plate in a bendable state.

In summary, this invention can achieve the intended purpose and solve the lack of knowledge. It is also extremely novel and progressive and fully meets the requirements for invention patent application. Therefore, we have filed an application in accordance with the Patent Law. We sincerely request that you carefully examine and grant the patent in this case to protect the rights of the inventor.

However, the above is only the preferred feasible embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technologies, means and other changes made by using the contents of the description and drawings of the present invention are also included in the scope of the present invention and are appropriately stated.

<The present invention> 1: First plate body 10: First edge seal 100: First inner surface 101: Fine lines 11: First capillary layer 2: Second plate body 20: Second edge seal 200: Second inner surface 201: Fine lines 21: Support column 22: Second capillary layer 3: Rubber layer C1: Heat exchange zone C2: Heat exchange zone F: Bendable zone D: Large spacing D: Small spacing h: Depth T: Thickness t: Thickness

FIG. 1 is a three-dimensional exploded view of the present invention.

FIG. 2 is a three-dimensional assembly diagram of the present invention.

FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 2 .

FIG. 4 is an enlarged detailed view of portion A of FIG. 3 .

FIG. 5 is a schematic diagram of the present invention in a bent state.

FIG. 6 is an enlarged schematic diagram of the outer surfaces of the first and second plates of the present invention.

FIG. 7 is an enlarged schematic diagram of the outer surfaces of the first and second plates of another embodiment of the present invention.

1: First plate

2: Second plate

3:Colloid layer

C1: Heat exchange area

C2: Heat exchange area

F: bendable area

Claims (10)

A bendable temperature-averaging plate structure comprises: a first plate body having a first sealing edge surrounding its periphery, and a first inner surface surrounded by the first sealing edge is formed on the first plate body to cover a first capillary layer; and a second plate body, stacked on the first plate body relative to the first plate body to form a closed hollow shape with the first body, and the second plate body also has a second sealing edge surrounding its periphery, and a second inner surface surrounded by the second sealing edge is formed on the second plate body, and a plurality of supporting columns and a plurality of second capillary layers arranged between the supporting columns are provided on the second inner surface; The first and second plates are stacked opposite to each other and have two heat exchange areas and a bendable area. The bendable area is connected between the two heat exchange areas, and the outer surface of the bendable area is provided with a plurality of fine lines arranged at intervals. The bendable temperature-averaging plate structure as described in claim 1, wherein the first inner surface and the second inner surface of the first and second plates are either concave and the other is flat. The bendable temperature-averaging plate structure as described in claim 1, wherein the first inner surface and the second inner surface of the first and second plates are both concave. A bendable temperature-averaging plate structure as described in claim 1, wherein the first edge seal of the first plate body and the second edge seal of the second plate body are tightly fitted together by laser welding. A bendable temperature-averaging plate structure as described in claim 1, wherein the pores of the second capillary layer are coarser than the pores of the first capillary layer. The bendable temperature-averaging plate structure as described in claim 1 or 5, wherein each second capillary layer of the second plate body is attached to the second inner surface of the second plate body in a straight line direction following the two heat exchange zones and passing through the bendable area. The bendable temperature equalizing plate structure as described in claim 6, wherein the second capillary layers are spaced apart from each other so that the supporting columns are arranged in a plurality of rows along the spaces between the second capillary layers. A bendable temperature-isolating plate structure as described in claim 1 or 6, wherein the arrangement spacing of the supporting columns in the second heat exchange zone is greater than the arrangement spacing in the bendable zone. The bendable temperature-averaging plate structure as described in claim 1, wherein the depth of the fine lines is 1/10 to 1/2 of the thickness of the first and second plates. A bendable temperature-averaging plate structure as described in claim 9, wherein the fine lines are covered with a rubber layer.

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