WO2021168914A1

WO2021168914A1 - Temperature equalization plate radiator

Info

Publication number: WO2021168914A1
Application number: PCT/CN2020/079113
Authority: WO
Inventors: 张于光
Original assignee: 张于光
Priority date: 2020-02-25
Filing date: 2020-03-13
Publication date: 2021-09-02
Also published as: CN111322891A

Abstract

Disclosed is a temperature equalization plate radiator, comprising a first cover plate (1) and a second cover plate (2), wherein an upward protruding cavity (101) is provided in a center area of the first cover plate (1); after an outer frame of the first cover plate (1) covers a peripheral area of the second cover plate (2), the upward protruding cavity (101) and the second cover plate (2), which is directly below same, are combined to form a containing cavity (4); a plurality of downward protruding supporting structures (103) are arranged, in an array manner, on an inner wall of the upward protruding cavity (101) corresponding to the surface area of the containing cavity (4); a capillary structure (5) is arranged in the containing cavity (4); one surface of the capillary structure (5) is attached to a downward protruding inner wall of the downward protruding supporting structure (103); another surface of the capillary structure (5) is arranged such that same is attached to an inner surface of the corresponding area of the second cover plate (2); the containing cavity (4) is filled with a working phase change fluid medium; and at least one hydrogen absorption component (6) with a fixed position is further arranged in the containing cavity (4). In the radiator, the thickness of a temperature equalization plate can be reduced and the heat exchange capacity can be improved according to a heat exchange requirement, the overall weight is reduced, and a good heat conduction performance of the temperature equalization plate is improved and maintained.

Description

A uniform temperature plate radiator

Technical field

The present invention relates to the technical field of uniform temperature plate structure, in particular to a uniform temperature plate radiator.

Background technique

With the continuous upgrading of the functions and appearance of computers, tablets, and mobile phones, the requirements for power consumption and thinner and lighter experience are also increasing. The uniform temperature plate has gradually replaced the traditional heat pipe for heat dissipation. The uniform temperature plate has a divergent steam path, has a good 2D surface thermal conductivity, and has a high-density thermal conductivity, and has the characteristics of lightness and thinness.

At present, there are still some shortcomings in the production and use of the uniform temperature board:

1 With the trend toward thinness, the volume of the internal vacuum chamber is continuously compressed, and the performance is reduced accordingly.

2 Plate convex pillars are mostly solid, and the weight of the product is difficult to reduce.

3 If the distance between the heat source and the temperature equalizing plate is far, an additional metal block of contact surface needs to be attached or welded. The thermal resistance from the heat source to the equalizing plate is greatly improved, and the weight and cost are increased.

4 The capillary structure is mostly a regular structure shape, and it cannot fit the plate well when it encounters an irregular step plate, which will affect the flow and conduction of the phase change medium and reduce the heat conduction capacity;

5 In the manufacture of the uniform temperature plate, the vacuum chamber is not clean enough to remove gas. In addition to the condensable phase change medium above 0 ℃, including hydrogen, a variety of condensable gases that cannot be condensed above 0 ℃ are left, resulting in performance degradation or failure.

6 After the homogenizing plate is manufactured, it will be caused by the continuous chemical or electrochemical reaction between the heat pipe or the homogenizing plate metal shell material or the internal metal capillary structure material and the working phase change fluid medium in the vacuum chamber during the entire period of its life. Various gases, including hydrogen, cannot be condensed at temperatures above 0°C, causing performance degradation or failure.

In this context, a new type of uniform temperature plate radiator is urgently needed.

Summary of the invention

In view of the above problems, the present invention provides a uniform temperature plate radiator, which enables the uniform temperature plate to reduce the thickness, increase the heat exchange capacity, reduce the overall weight, and meet the ever-increasing heat exchange requirements according to the heat exchange requirements; and Effectively remove a variety of condensed gases that cannot be above 0°C, including hydrogen, in the cavity of the uniform temperature plate, and improve and maintain the good thermal conductivity of the uniform temperature plate.

A temperature equalizing plate radiator, characterized in that it comprises a first cover plate and a second cover plate, the central area of the first cover plate is provided with an upper convex cavity, and the outer frame cover of the first cover plate The combination of the upper convex cavity and the second cover directly below it after being installed in the peripheral area of the second cover plate forms a cavity, and the inner wall array of the upper convex cavity corresponds to the area of the cavity A number of lower convex support structures are arranged, and a capillary structure is arranged in the cavity. One surface of the capillary structure is arranged in contact with the lower convex inner wall of the lower convex support structure, and the other surface of the capillary structure is attached The inner surface of the corresponding area of the second cover plate is arranged, the cavity is filled with a working phase change fluid medium (hereinafter referred to as the working medium), and at least one fixed hydrogen absorption component is also arranged in the cavity.

It is further characterized in that: the hydrogen absorbing member is specifically a composite metal alloy, and the main component of the hydrogen absorbing member is any single substance among titanium-based materials, calcium-based materials, palladium-based materials, vanadium-based materials, and platinum-based materials An alloy or a composite material alloy composed of at least two of the above material alloys. The hydrogen absorption component can absorb and store small molecular gases including hydrogen within 400°C, and retain the working phase change in the cavity The fluid medium, and the only component ratio of the working phase change fluid medium in the cavity is higher, so as to achieve the purpose of improving and maintaining the performance of the temperature equalization plate;

The volume of the hydrogen absorption component is 0.02% to 0.1% of the volume of the cavity;

The number of the hydrogen absorbing parts can be arbitrarily fixed and placed according to needs;

The hydrogen absorption component is attached and fixed to at least one of the first cover plate, the second cover plate, the capillary structure, and the downwardly convex supporting structure located within the cavity;

The hydrogen absorbing component is attached and fixed to the corresponding structure by means of laser welding, resistance welding, ultrasonic welding, or pasting;

The hydrogen absorption component is fixed to the corresponding structure through a connecting structure, riveting, and a pressing connection method;

The hydrogen absorption component is fixed to the corresponding structure by weaving, winding, and sintering;

The hydrogen absorbing member is fixed at a corresponding position of the first cover plate as the downward convex support structure, and the corresponding surface of the capillary structure facing the first cover plate is attached to the corresponding surface of the hydrogen absorbing member Layout

It also includes a working fluid injection hole, the working fluid injection hole communicates with the cavity, and the working fluid injection hole is sealed after injecting the working phase change fluid medium and evacuating;

The outer peripheries of the first cover plate and the second cover plate are sealed and combined by laser welding/solder welding/ultrasonic welding. The working fluid is pumped and injected from the working fluid injection hole, and the working fluid enters and exits the interior of the uniform temperature plate through the channel of the working fluid injection hole. After the gas injection is completed, use resistance welding/laser welding/ultrasonic welding to seal the refrigerant injection hole;

The capillary structure is specifically a mesh structure, a sintered powder structure or a mesh + sintered powder composite structure, and the material of the capillary structure is specifically copper, copper alloy, aluminum, aluminum alloy, titanium, titanium alloy or stainless steel;

The shape of the lower convex support structure is specifically cylindrical, frustum, cube, cube, hemisphere, ellipsoid, and all the lower convex support structures are arranged in a rectangular array to ensure simple and convenient production;

The materials of the first cover plate and the second cover plate are copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, stainless steel of various labels, or a composite alloy formed by a combination of at least two of the materials.

After adopting the above technical solution, the thickness of the uniform temperature plate can be 0.25mm, which greatly improves the light and thin characteristics of the uniform temperature plate. In terms of design, the characteristics can be reduced or added at any position. It has good compatibility with complex mechanisms and heat conduction. The method is two-dimensional plane multi-directional conduction design, which has small limitations and high efficiency. The entire technical product can use corrosion-resistant materials to provide more efficient heat conduction performance, reliability and life without surface treatment; the cavity is equipped with Capillary structure, one surface of the capillary structure is arranged in contact with the lower convex inner wall of the lower convex support structure, the other surface of the capillary structure is arranged in contact with the inner surface of the corresponding area of the second cover plate, and the cavity also includes a working fluid, The temperature of the second cover plate increases in contact with the heat source, and the liquid working fluid rapidly evaporates into a hot gaseous working fluid in a vacuum ultra-low pressure environment while absorbing heat energy. The hot gaseous working fluid is transferred to other places in the gap in the capillary structure to liquefy into Liquid, release heat at the same time, the liquid working fluid flows back to the heat source position through the capillary structure, and work again and again, which enables the uniform temperature plate to reduce the thickness, increase the heat exchange capacity, reduce the overall weight, and meet the growing demand according to heat exchange needs. Heat exchange requirements; because there is also at least one fixed hydrogen absorption component arranged in the cavity, the hydrogen absorption component can absorb and store small molecular gases including hydrogen within 400°C, and retain the working phase change fluid medium in the cavity , And make the ratio of the only component of the working phase change fluid medium in the cavity higher, to achieve the purpose of improving and maintaining the performance of the temperature equalizing plate; in summary, the use of the above-mentioned technical scheme makes the equalizing plate radiator capable of According to the heat exchange needs, the thickness is reduced, the heat exchange capacity is increased, and the overall weight is reduced to meet the ever-increasing heat exchange demand; and it is effective for a variety of condensed gases that cannot be above 0°C, including hydrogen, in the chamber of the uniform temperature plate. Remove, improve and maintain the good thermal conductivity of the uniform temperature plate.

Description of the drawings

FIG. 1 is a schematic structural diagram of a bottom view of specific embodiment 1 of the present invention;

Fig. 2 is a schematic diagram of the A-A section structure of Fig. 1;

Fig. 3 is a schematic structural diagram of a bottom view of the second cover plate hidden in Fig. 1;

Fig. 4 is a schematic structural view of the bottom view of the second cover plate and the capillary structure hidden in Fig. 1;

5 is a schematic structural diagram of a bottom view of the second embodiment of the present invention;

Fig. 6 is a schematic diagram of the B-B sectional structure of Fig. 5;

FIG. 7 is a schematic structural diagram of a bottom view of the second cover plate hidden in FIG. 5; FIG.

FIG. 8 is a schematic structural diagram of a bottom view of the second cover plate and the capillary structure hidden in FIG. 5; FIG.

9 is a schematic structural diagram of a bottom view of a specific embodiment of the present invention;

Fig. 10 is a schematic diagram of the C-C cross-sectional structure of Fig. 9;

FIG. 11 is a schematic structural diagram of a bottom view of the second cover plate hidden in FIG. 9; FIG.

12 is a schematic structural diagram of a bottom view of a specific embodiment of the present invention;

Fig. 13 is a schematic diagram of the D-D cross-sectional structure of Fig. 12;

FIG. 14 is a schematic structural diagram of a bottom view of the second cover plate hidden in FIG. 12; FIG.

Fig. 15 is a schematic structural diagram of a bottom view of the second cover plate and capillary structure hidden in Fig. 12;

The names corresponding to the serial numbers in the figure are as follows:

The first cover 1, the second cover 2, the seal 3, the upper convex cavity 101, the outer frame 102, the lower convex support structure 103, the lower convex rivet column 104, the cavity 4, the capillary structure 5, the hydrogen absorption component 6, Center hole 61, working fluid injection hole 7.

Detailed ways

A kind of uniform temperature plate radiator, see Figure 1 to Figure 15: It includes a first cover plate 1 and a second cover plate 2. The central area of the first cover plate 1 is provided with an upper convex cavity 101, and the first cover plate 1 After the outer frame 102 is covered on the peripheral area of the second cover plate 2, the combination of the upper convex cavity 101 and the second cover plate 2 directly below it forms the cavity 4, and the upper convex cavity 101 corresponds to the cavity 4 The inner wall of the surface area is arrayed with a number of lower convex support structures 103, the cavity 4 is provided with a capillary structure 5, one of the surfaces of the capillary structure 5 is arranged to fit the lower convex inner wall of the lower convex support structure 103, and the other of the capillary structure 5 One surface is arranged on the inner surface of the corresponding area of the second cover plate 2, and the cavity 4 is filled with a working phase change fluid medium (hereinafter referred to as the working fluid, not shown in the figure, belonging to the existing mature structure), and the cavity 4 is At least one hydrogen absorbing member 6 fixed in position is also provided.

The hydrogen absorbing member 6 is specifically a composite metal alloy. The main component of the hydrogen absorbing member 6 is any single material alloy among titanium-based materials, calcium-based materials, palladium-based materials, vanadium-based materials, and platinum-based materials, or any of the above-mentioned material alloys. A composite material alloy composed of at least two material alloys. The hydrogen absorbing part 6 can absorb and store small molecular gases including hydrogen within 400°C, retain the working phase change fluid medium in the cavity, and make the working phase change The proportion of the only component of the fluid medium in the cavity is higher to achieve the purpose of improving and maintaining the performance of the temperature equalization plate;

The volume of the hydrogen absorbing part 6 is 0.02% to 0.1% of the volume of the cavity;

The number of hydrogen absorbing parts 6 can be arbitrarily fixed and placed according to needs;

The hydrogen absorption component 6 is attached and fixed to at least one of the first cover plate 1, the second cover plate 2, the capillary structure 5, and the downward convex support structure 103 located in the range of the cavity 4;

The hydrogen absorption component 6 is attached and fixed to the corresponding structure by means of laser welding, resistance welding, ultrasonic welding, and pasting;

The hydrogen absorbing component 6 is fixed to the corresponding structure by connecting structure, riveting, and pressing connection;

The hydrogen absorbing part 6 is fixed to the corresponding structure by weaving, winding, and sintering;

The hydrogen absorbing member 6 is fixed at the corresponding position of the first cover plate 1 as a downward convex supporting structure 103, and the corresponding surface of the capillary structure 5 facing the first cover plate 1 is arranged in close contact with the corresponding surface of the hydrogen absorbing member 6;

It also includes a working fluid injection hole 7, which is connected to the cavity 4, and the working fluid injection hole 7 is sealed 3 after the working phase change fluid medium is injected and evacuated;

The outer peripheries of the first cover plate 1 and the second cover plate 2 are sealed and combined by laser welding/solder welding/ultrasonic welding. The working fluid is pumped and injected from the position of the working fluid injection hole 7, and the working fluid enters and exits from the working fluid injection hole 7. Inside the warm plate, use resistance welding/laser welding/ultrasonic welding to seal the refrigerant injection hole after the gas injection is completed;

The capillary structure 5 is specifically a mesh structure, a sintered powder structure or a mesh + sintered powder composite structure, and the material of the capillary structure 5 is specifically copper, copper alloy, aluminum, aluminum alloy, titanium, titanium alloy or stainless steel;

The shape of the downward convex supporting structure 103 is specifically cylindrical, truncated cone, cube, cube, hemispherical, and ellipsoidal. All the downward convex supporting structures are arranged in a rectangular array to ensure simple and convenient production;

The materials of the first cover plate 1 and the second cover plate 2 are copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, various stainless steels, or a composite alloy formed by a combination of at least two of them.

Specific embodiment one, see Figure 1 to Figure 4: The hydrogen absorption component 6 is attached and fixed to the corresponding surface of the cavity 4 of the first cover plate 1. The number of the hydrogen absorption component 6 is three, and the three hydrogen absorption components 6 are respectively It is fixed to the corresponding surface of the cavity 6 of the first cover plate 1 by laser welding, resistance welding, ultrasonic welding or pasting. The total volume of the three hydrogen absorbing parts 6 is 0.02% of the volume of the cavity.

Specific embodiment two, see Figure 5-8: the hydrogen absorption component 6 is attached and fixed to the corresponding surface of the cavity of the first cover plate 1, the number of hydrogen absorption components is three, and the central hole of the three hydrogen absorption components 6 61 are respectively fixed to the lower convex rivet column 104 of the cavity of the first cover plate 1 by riveting. The total volume of the three hydrogen absorbing parts 6 is 0.06% of the volume of the cavity. In specific implementation, the lower convex rivet column The lower end surface of 104 is flush with the lower end surface of the lower convex supporting structure 103 and is used for pressing the capillary structure 5.

Specific embodiment three, see Figure 9-11: the hydrogen absorbing member 6 is attached and fixed to a section of the lateral area of the cavity between the first cover plate 1 and the second cover plate 2, and the hydrogen absorbing member 6 passes The hydrogen absorbing member 6 is connected to the capillary structure 5 or the first cover plate 1 through weaving, winding, and sintering. The total volume of the hydrogen absorbing member 6 is 0.1% of the volume of the cavity.

Specific embodiment four, see Figures 12-15: two hydrogen absorbing parts 6 are fixed at the corresponding positions of the first cover plate 1 as a downward convex support structure, and the corresponding surface of the capillary structure 5 facing the first cover plate 1 is attached Corresponding to the corresponding surface arrangement of the hydrogen absorbing part 6, the total volume of the two hydrogen absorbing parts 6 is 0.08% of the volume of the cavity.

Its working principle is as follows:

The uniform temperature plate can achieve a thickness of 0.25mm, which greatly improves the light and thin characteristics of the uniform temperature plate. The design can reduce or add features at any position. It has good compatibility with complex mechanisms. The heat conduction method is two-dimensional plane. The directional conduction design has small limitations and high efficiency. The entire technical product can use corrosion-resistant materials to provide more efficient heat conduction performance, reliability and life without surface treatment; capillary structure and capillary structure are provided in the cavity One surface is arranged on the lower convex inner wall of the lower convex support structure, and the other surface of the capillary structure is arranged on the inner surface of the corresponding area of the second cover plate. The outer peripheries of the first cover plate and the second cover plate are arranged by laser welding/solder The welding/ultrasonic welding process is sealed and combined, the working fluid is pumped and injected from the working fluid injection hole, and the working fluid enters and exits the interior of the uniform temperature plate through the channel of the working fluid injection hole. After the gas injection is completed, resistance welding/laser welding/ultrasonic welding is used The method is to seal the working fluid injection hole, and the temperature of the second cover plate is increased in contact with the heat source. The liquid working fluid evaporates quickly in a vacuum ultra-low pressure environment into a hot gaseous working fluid while absorbing heat energy. The hot gaseous working fluid is in the capillary structure The inner gap is transferred to other places to liquefy into a liquid and release heat at the same time. The liquid working fluid flows back to the heat source position through the capillary structure, and it works again and again, which enables the uniform temperature plate to reduce the thickness and increase the heat exchange capacity according to the heat exchange needs. , Reduce the overall weight and meet the ever-increasing demand for heat exchange; because there is also at least one fixed hydrogen absorption component arranged in the cavity, the hydrogen absorption component can absorb and store small molecular gases including hydrogen within 400 ℃, and retain The working phase change fluid medium in the cavity and the only component ratio of the working phase change fluid medium in the cavity is higher, so as to achieve the purpose of improving and maintaining the performance of the temperature equalization plate.

For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended to fall within the claims. All changes within the meaning and scope of the equivalent elements of are included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

In addition, it should be understood that although this specification is described in accordance with the implementation manners, not each implementation manner only includes an independent technical solution. This narration in the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole The technical solutions in the various embodiments can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

A temperature equalizing plate radiator, characterized in that it comprises a first cover plate and a second cover plate, the central area of the first cover plate is provided with an upper convex cavity, and the outer frame cover of the first cover plate The combination of the upper convex cavity and the second cover directly below it after being installed in the peripheral area of the second cover plate forms a cavity, and the inner wall array of the upper convex cavity corresponds to the area of the cavity A number of lower convex support structures are arranged, and a capillary structure is arranged in the cavity. One surface of the capillary structure is arranged in contact with the lower convex inner wall of the lower convex support structure, and the other surface of the capillary structure is attached It is arranged on the inner surface of the corresponding area of the second cover plate, the cavity is filled with a working phase change fluid medium, and at least one hydrogen absorption component with a fixed position is also arranged in the cavity.
The uniform temperature plate radiator according to claim 1, wherein the hydrogen absorbing member is specifically a composite metal alloy, and the main components of the hydrogen absorbing member are titanium-based materials, calcium-based materials, and palladium-based materials. , Vanadium-based substances, platinum-based substances, any single material alloy or a composite material alloy composed of at least two material alloys in the above-mentioned material alloys, the hydrogen absorbing component can absorb and store hydrogen gas within 400°C The small molecular gas inside retains the working phase change fluid medium in the cavity, and makes the only component ratio of the working phase change fluid medium in the cavity higher.
The uniform temperature plate radiator according to claim 1 or 2, wherein the volume of the hydrogen absorption component is 0.02% to 0.1% of the volume of the cavity.
The uniform temperature plate radiator according to claim 1, wherein the number of the hydrogen absorbing parts is arbitrarily fixed and placed according to needs.
The uniform temperature plate radiator according to claim 1, wherein the hydrogen absorption component is attached and fixed to the first cover plate, the second cover plate, and the capillary structure in the range of the cavity. , At least one of the downwardly convex supporting structures.
The uniform temperature plate radiator according to claim 5, wherein the hydrogen absorption component is attached and fixed to the corresponding structure by means of laser welding, resistance welding, ultrasonic welding, or pasting.
The uniform temperature plate radiator according to claim 5, wherein the hydrogen absorption component is fixed to the corresponding structure through a connecting structure, a riveting, and a pressing connection.
The uniform temperature plate radiator according to claim 5, wherein the hydrogen absorption component is fixed to the corresponding structure by weaving, winding, and sintering.
The uniform temperature plate radiator according to claim 1, wherein the hydrogen absorbing member is fixed on the corresponding position of the first cover as the downward convex supporting structure, and the direction of the capillary structure is The corresponding surface of the first cover plate is arranged in accordance with the corresponding surface of the hydrogen absorption component.
The uniform temperature plate radiator according to claim 1, characterized in that it further comprises a working fluid injection hole, the working fluid injection hole communicates with the cavity, and the working fluid injection hole is injecting the working phase change fluid into the cavity. Seal the medium after vacuuming.
The uniform temperature plate heat sink according to claim 1, wherein the capillary structure is specifically a mesh structure, a sintered powder structure, or a mesh + sintered powder composite structure, and the material of the capillary structure is specifically copper , Copper alloy, aluminum, aluminum alloy, titanium, titanium alloy or stainless steel materials.
The uniform temperature plate radiator according to claim 1, wherein the shape of the downward convex supporting structure is specifically cylindrical, truncated cone, cube, cube, hemispherical, and ellipsoidal, all of which are lower in shape. The convex supporting structures are arranged in a rectangular array.
The uniform temperature plate radiator according to claim 7, wherein the materials of the first cover plate and the second cover plate are copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, Titanium alloy, multiple stainless steels, or composite alloys formed by a combination of at least two of them.