TW202142825A - Compound wick structure of vapor chamber - Google Patents

Abstract

The present invention provides a compound wick structure of a vapor chamber, which comprises a first plate and a second plate. The first plate has a first side and a second side. The second plate has a third side and a fourth side. The first plate and the second plate are assembled together to form a sealed chamber. The third side of the second plate is provided with a mesh or a fiber body; the third side has at least one heated zone having a first sintered-powder structure. The first sintered-powder structure is selected to be connected to or in contact with the mesh or the fiber body. A working liquid is disposed in the sealed chamber. By means of the arrangement of the compound wick structure, the vertical and horizontal flow-back efficiencies of the working liquid are enhanced and the efficiency of liquid-vapor cycle is increased.

Description

Compound capillary structure of uniform temperature plate

A composite capillary structure with a uniform temperature plate, especially a composite capillary structure with a uniform temperature plate that combines the characteristics of a two-phase flow of a grid body and a sintered powder or other multiple types of capillary structures.

The current uniform temperature plate is a kind of heat transfer element through the principle of two-phase flow heat exchange, and is often used in large-area surface-to-surface heat conduction work, and because of its large contact area, it is aimed at surface-to-surface heat transfer. The heat conduction is very fast and even heat. There is an airtight chamber inside the temperature equalizing plate, and a capillary structure is set on the side of the airtight chamber that contacts the heat source for water absorption and return. At the same time, the airtight chamber is evacuated and filled with working liquid as a two-phase flow heat Used interchangeably, the capillary structure of the conventional uniform temperature plate has better capillary force. Most of the sintered powders are sintered on the surface of the airtight chamber through sintering. The sintered powder structure has the characteristics of porosity to generate capillary force, and then The condensed working liquid is refluxed and absorbed in the heated evaporation area. The working fluid in the heated area of the uniform temperature plate diffuses to the condensing area and condenses into a liquid after being heated and evaporated, and then drops the capillary structure formed by the sintered powder by gravity to the evaporation area. The traditional capillary structure formed by the sintered powder is effective The return effect of the working fluid in the horizontal direction is relatively poor. If the overall area of the uniform temperature plate is set in a wide and long manner, the effect of the return water efficiency in the horizontal direction is relatively poor, so how to make the uniform temperature plate both vertical and horizontal The fast water return efficiency is what the industry needs to improve.

Therefore, in order to effectively solve the above-mentioned problems, the main purpose of the present invention is to provide a method that captures the characteristics of multiple capillary structures and uses them in combination, thereby simultaneously possessing the characteristics of the vapor-liquid circulation of multiple types of capillary structures. In order to achieve the above objective, the present invention provides a composite capillary structure of uniform temperature plate, which includes: a first plate body and a second plate body; The first plate has a first side and a second side; the second plate has a third side and a fourth side, and the first and second plates are correspondingly covered to form an airtight chamber , The third side of the second plate body is attached with a grid body or fiber body, and the third side has at least one heated area, and the heated area is provided with a first sintered powder structure and is selected to be the same as the aforementioned grid The body or fiber body forms contact or connection, and the airtight chamber is filled with a working fluid. The present invention integrates the capillary characteristics of the capillary structure such as the mesh body or the fibrous body and the sintered powder, and uses the characteristics of the two to make up for the deficiency of the two, thereby improving the efficiency of the vapor-liquid circulation of the uniform temperature plate.

The above-mentioned objects and structural and functional characteristics of the present invention will be described based on the preferred embodiments of the accompanying drawings. Please refer to Figures 1a, 1b, and 2, which are the three-dimensional exploded and combined diagrams of the first embodiment of the composite capillary structure of the uniform temperature plate of the present invention. As shown in the figure, the composite capillary structure of the uniform temperature plate includes ：A first board body 11, a second board body 12; The first board 11 has a first side 111 and a second side 112, and the first and second sides 111 and 112 are separately provided on the upper and lower sides of the first board 11. The second board body 12 has a third side 121 and a fourth side 122. The third and fourth sides 121, 122 are separately provided on the upper and lower sides of the second board body 12. , The two plates 11 and 12 are correspondingly covered to form an airtight chamber 13. The third side 121 of the second plate 12 is provided with a mesh body 2, and the third side 121 has at least one heated area 1211, so The heated zone 1211 has a first sintered powder structure 1211a, and is selected to be in contact with or connected to the aforementioned mesh or fibrous body 2, 2'(as shown in Figure 1b). In this embodiment, the first sintered powder structure 1211a is used. The contact with the mesh body 2 is taken as an illustrative embodiment, and it can also be partly contacted partly connected, but it is not limited to that, that is, the mesh body or fiber body 2, 2'(as shown in Figure 1b) surrounds The outer edge of the first sintered powder structure 1211a extends outward, and the airtight chamber 13 is filled with a working liquid 3. The heat-receiving area 1211 is chosen to be located near the center of the second plate body 12 for illustration in this embodiment, and the first sintered powder structure 1211a of the heat-receiving area 1211 is sintered to form a square shape. The first and second plate bodies 11, 12 are made of any material of copper, aluminum, stainless steel, ceramic, commercial pure titanium, titanium alloy, copper alloy, and aluminum alloy, and the first and second plate bodies 11, 12 can be It is a combination of the same or different materials. Please refer to Figure 3, which is a combined cross-sectional view of the second embodiment of the composite capillary structure of the temperature equalizing plate of the present invention. As shown in the figure, this embodiment has the same structure as the first embodiment, so it will not be omitted here. To repeat, this embodiment is different from the foregoing first embodiment in that the airtight chamber 13 has a supporting structure 14 which is composed of any one of a plurality of solid columns, hollow rings, and powder sintered columns. , And the two ends of the supporting structure 14 respectively press against the second and third sides 112 and 121, thereby increasing the degree of support of the airtight chamber 13 of the uniform temperature plate and avoiding collapse. Please refer to Figure 4, which is a combined cross-sectional view of the third embodiment of the composite capillary structure of the temperature equalizing plate of the present invention. As shown in the figure, this embodiment has the same partial structure as the foregoing first embodiment, so it will not be omitted here. To repeat, this embodiment is different from the aforementioned first embodiment in that the first sintered powder structure 1211a has a second sintered powder structure 1211c in the center, and the porosity of the first sintered powder structure 1211a is greater than that of the second sintered powder structure 1211a. The sintered powder structure 1211c can increase the water content of the heated area 1211 through the sintered powder with different porosity. Please refer to Figure 5, which is a combined cross-sectional view of the fourth embodiment of the composite capillary structure of the temperature equalizing plate of the present invention. As shown in the figure, this embodiment is partially the same as the first embodiment, so it will not be omitted here. To repeat, this embodiment is different from the aforementioned first embodiment in that the heat receiving area at the center of the second plate body 12 is formed with a recess 12a, and the recess 12a is formed by the third side 121 of the second plate body 12. The first sintered powder 1211a is formed by protruding toward the fourth side 122. The first sintered powder 1211a is filled in the recess 12a (it can be flush or recessed or protruding from the recess). The protrusions on the four sides 122 are in contact with a heat source 4 to improve the heat transfer efficiency in contact with the heat source 4. The above embodiments of the present invention are used in combination with a grid or fiber body and a sintered powder structure. The grid or fiber can reinforce the water return capacity of the uniform temperature plate in the horizontal direction, and at the same time, the sintered powder structure can improve the heating area. The moisture content avoids dry burning. The combined use of the composite capillary structure of the present invention further improves the conventional uniform temperature plate which only has the vertical vapor-liquid circulation effect, and lacks the horizontal vapor-liquid circulation effect.

11: The first board 111: first side 112: second side 12: The second board 121: third side 122: fourth side 2, 2’: Mesh body, fiber body 1211: Heated area 1211a: First sintered powder structure 1211c: Second sintered powder structure 13: Airtight chamber 14: Supporting structure 12a: recess 3: working fluid 4: heat source

Figure 1a is a three-dimensional exploded view of the first embodiment of the composite capillary structure of the uniform temperature plate of the present invention; Figure 1b is a three-dimensional exploded view of the first embodiment of the composite capillary structure of the uniform temperature plate of the present invention; Figure 2 is a combined cross-sectional view of the first embodiment of the composite capillary structure of the uniform temperature plate of the present invention; Figure 3 is a combined cross-sectional view of the second embodiment of the composite capillary structure of the uniform temperature plate of the present invention; Figure 4 is a combined cross-sectional view of the third embodiment of the composite capillary structure of the uniform temperature plate of the present invention; Figure 5 is a combined cross-sectional view of the fourth embodiment of the composite capillary structure of the uniform temperature plate of the present invention.

11: The first board

111: first side

112: second side

12: The second board

121: third side

122: fourth side

2: Mesh

1211: Heated area

1211a: First sintered powder structure

13: Airtight chamber

Claims (4)

A composite capillary structure of uniform temperature plate, which contains: A first board having a first side and a second side; A second plate body has a third side and a fourth side, the first and second plates correspondingly cover to form an airtight chamber, and the third side of the second plate body is provided with a grid body, And the third side has at least one heated zone, the heated zone has a first sintered powder structure, and the first sintered powder structure is selectively connected or in contact with the aforementioned mesh body or fiber body, and the airtight chamber Filled with a working fluid. The uniform temperature plate composite capillary structure according to claim 1, wherein the airtight chamber has a support structure, and the support structure is composed of any one of a plurality of solid columns, hollow rings, and powder sintered columns, and The two ends of the supporting structure are against the second and third sides respectively. The uniform temperature plate composite capillary structure according to claim 1, wherein the center of the first sintered powder structure has a second sintered powder structure, and the porosity of the first sintered powder structure is greater than that of the second sintered powder structure. Powder structure. The uniform temperature plate composite capillary structure as described in claim 1, wherein the first and second plate systems are any of copper, aluminum, stainless steel, ceramics, commercial pure titanium, titanium alloys, copper alloys, and aluminum alloys Material, and the first and second plates can be a combination of the same or different materials.

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