KR102457714B1 - Composite with heat insulation and heat dissipation function and manufacturing method thereof - Google Patents

Abstract

The composite of this invention is formed on the other side with the vacuum insulating part 200 formed on one side with a common plate 100 of a certain area interposed therebetween, so that the heat generated from the heat source of the applied product is transferred to the phase of the heat transfer medium in a vacuum state. It includes a vacuum heat dissipation unit 300 that radiates heat using a change principle, and the vacuum heat insulating unit 200 and the vacuum heat dissipation unit 300 are welded to the common plate 100 and integrated with each other, but the vacuum heat dissipation unit 300 A welding line for vacuum heat dissipation of the vacuum insulation unit 200 is characterized in that it is located outside the welding line for vacuum insulation.

Description

Composite with heat insulation and heat dissipation function and manufacturing method thereof

The present invention relates to a composite having a heat insulation and heat dissipation function, and more particularly, a heat insulation function is required to prevent heat generated from the product from being discharged to the outside depending on the applied product and/or the applied environment, and is discharged to the outside. In order to achieve this, a heat dissipation function is required, and the present invention relates to a composite having an insulating and heat dissipating function capable of simultaneously satisfying both the insulating function and the heat dissipating function so as to enable product operation or environmental composition under ideal conditions, and a method for manufacturing the same.

Vacuum Insulation Panel is an insulator that seals the inside under reduced pressure after filling the core material acting as a spacer in the outer shell material. As the core material, an organic core material such as polyurethane foam or an inorganic core material such as glass fiber can be used, and the conventional general insulation material exhibits thermal insulation performance of 0.031 ~ 0.040W/mk, whereas the vacuum insulation material exhibits thermal insulation performance of 0.0002 ~ 0.015W/mk It exhibits excellent thermal insulation performance of mk.

That is, since the vacuum insulator can reduce heat transfer by convection and conduction by maintaining a vacuum inside, it is applied or applied to the outer wall of buildings, fire doors, and cold storage boxes, as well as transportation packages such as insulation materials for refrigerators and biopharmaceuticals. are preparing for On the other hand, various technologies such as Patent Publication Nos. 2020-0024172, 2020-0072257, and Patent Registration No. 10-2144484 have been disclosed as vacuum insulation-related technologies.

On the other hand, heat pipes have excellent thermal conductivity compared to high thermal conductivity metals such as silver, copper, and aluminum, so they are usefully applied in various fields such as cooling a heating part at a specific location such as a computer CPU or recovering specific heat. is becoming Such a heat pipe is composed of a tubular housing formed of a metal material such as stainless steel, copper, aluminum, or the like, and a working fluid accommodated in the housing.

Therefore, when heat is applied from one side of the housing, the working fluid is evaporated in the inner space of the heating unit, and the evaporated steam is rapidly moved to the other side where heat is not applied and condensed, so that the heat of the heating unit (evaporation unit) is converted into latent heat ( It serves to transfer to the condensing unit in the form of latent heat.

In addition, a plate-shaped wick protruding a predetermined length from the inner surface of the housing is formed inside the housing. Accordingly, the working fluid condensed by moving from the housing to the other side comes into contact with the wick, and returns to the heating unit again by the capillary force generated thereby. That is, the heat pipe performs the heat dissipation function by infinitely repeating the heat transport cycle as described above.

On the other hand, recently, as various electronic products have high performance, high quality, and/or thin film, a lot of heat is generated. Therefore, there is a demand for a heat pipe of a new concept capable of responding to this.

Domestic Patent Registration No. 2047933 discloses "thin-film plate-type heat pipe and its manufacturing method". The thin-film plate-type heat pipe of this open technology is made by bonding an upper plate having a space in which the vaporized working fluid moves and a lower plate having an embossing micro-groove therein, and having a vacuum storage space. It is configured to include a body and a working fluid injected into the accommodation space.

Such a thin plate-type heat pipe has an advantage in that heat dissipation efficiency can be improved by facilitating circulation of the working fluid by forming a capillary having an embossed micro-groove structure therein.

On the other hand, in recent years, the performance of the applied product can be further improved when both the insulating function and the heat dissipation function are satisfied at the same time depending on the applied product or the applied environment. Therefore, there is a need to develop a product that can satisfy both the heat insulating function and the heat dissipation function at the same time.

Publication No. 2020-0024172 Patent Publication No. 2020-0072257 Patent Registration No. 2144484 Patent Registration No. 2047933

Accordingly, the present invention has been developed to solve the problems of the prior art as described above, and has a thermal insulation and heat dissipation function that can simultaneously satisfy an insulating function and a heat dissipation function to enable product operation or environment composition under ideal conditions. An object of the present invention is to provide a composite and a method for manufacturing the same.

This invention for achieving the above object is formed on the other side and a vacuum insulating part formed on one side with a common plate of a certain area interposed between the heat generated from the heat source of the applied product to the phase of the heat transfer medium in a vacuum state. and a vacuum heat dissipation unit for dissipating heat using a change principle, wherein the vacuum heat insulating unit and the vacuum heat dissipation unit are integrated with each other by welding each with the common plate, and a welding line for vacuum heat dissipation of the vacuum heat dissipation unit is vacuum insulation of the vacuum insulating unit It is characterized in that it is located on the outside of the welding line for

In addition, according to the present invention, the common plate, the outer covering material of the vacuum heat insulating unit, and the outer member of the vacuum heat dissipation unit may be made of the same stainless material.

In addition, according to the present invention, the common plate has a size corresponding to the size of the outer member of the vacuum heat dissipation part, and the vacuum heat insulating part may be configured to be the same as, relatively smaller, or larger than the vacuum heat dissipation part.

In addition, according to the present invention, the vacuum heat dissipation unit is welded to the common plate to form an internal space in a vacuum state, and an outer member having a contact surface for supporting or closely contacting a heat source of an applied product, and between the common plate and the outer member A heat transfer medium filled in a partial space in the inner space of the sheet, and one surface is in close contact with the inner surface of the common plate or the outer member to pull up the heat transfer medium in the opposite direction of gravity to enable condensation and evaporation, and the It may include a mesh member in close contact with the other side surface of the sheet and the other side inner surface of the common plate or the outer member, respectively.

In addition, this invention for achieving the above object is formed on the other side and the vacuum insulating part formed on one side with a common plate of a certain area interposed between the heat generated from the heat source of the applied product as a heat transfer medium in a vacuum state. A method of manufacturing a composite having a thermal insulation and heat dissipation function including a vacuum heat dissipating unit for dissipating heat using the phase change principle of After welding the common plate and the outer member of the vacuum heat dissipation unit so that the welding line is located outside the welding line for vacuum insulation of the vacuum insulating unit, a heat transfer medium is injected inside and a low-temperature vacuum operation is performed. It characterized in that it comprises the step of forming the vacuum heat dissipation unit through.

According to the present invention, it is possible to simultaneously satisfy the insulating function and the heat dissipation function through the vacuum insulating part and the vacuum heat dissipating part respectively formed on both sides with a common plate of a certain area therebetween, so that the product operation or environment composition under ideal conditions is possible.

In addition, the present invention can be applied to various fields such as fuel cell, military, OLED TV, micro LED TV, etc. because the vacuum insulation unit and the vacuum heat radiation unit can be implemented in various structures and shapes. For example, in the case of a box in which an external cold temperature should not be introduced and an internal temperature should not be high, such as a box in which an IP facility is built, it is very effective when using the composite of this invention capable of vacuum insulation and vacuum heat dissipation at the same time. In addition, when used as a battery case, it is possible to efficiently respond to the external environment, such as insulating the heat coming from the outside and dissipating the heat generated inside. In addition, when applied to OLED TV, heat transfer between the display and the board is blocked, providing a homogeneous image quality through the display, and heat generated from the board can be efficiently dissipated.

1 is a schematic diagram of a composite having thermal insulation and heat dissipation functions according to an embodiment of the present invention;
2 and 3 are exploded perspective views of a vacuum heat dissipation unit applied to this invention,
4 is a flowchart for the manufacturing process of the composite according to the present invention,
5 and 6 are schematic views of a modified example of the composite according to the present invention,
7 is a schematic diagram of an example in which the composite according to the present invention is applied to an OLED TV.

Hereinafter, a preferred embodiment of the composite having a thermal insulation and heat dissipation function according to the present invention and a method for manufacturing the same will be described in detail with reference to the accompanying drawings. The present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete and to completely convey the scope of the invention to those of ordinary skill in the art. It is provided to inform you.

1 is a schematic diagram of a composite having a thermal insulation and heat dissipation function according to an embodiment of the present invention, and FIGS. 2 and 3 are exploded perspective views of a vacuum heat dissipation unit applied to the present invention. Depending on the applied product and/or the applied environment, an insulating function is required to prevent the heat generated from the product from being discharged to the outside, and a heat dissipation function is required for discharging it to the outside. In addition, it is possible to operate a product or create an environment under ideal conditions only when these insulation and heat dissipation functions are satisfied at the same time. Therefore, in the present invention, a composite that satisfies both the heat insulating function and the heat dissipation function is implemented. 1 to 3, the composite (hereinafter, referred to as "composite") having a thermal insulation and heat dissipation function according to this embodiment is formed on one side with a common plate 100 of a certain area interposed therebetween. It is composed of a vacuum heat insulating unit 200 and a vacuum heat dissipating unit 300 formed on the other side.

The vacuum insulation unit 200 is constructed in the same concept as a conventional vacuum insulation panel, and after filling an organic core material such as polyurethane foam or an inorganic core material such as glass fiber in the outer shell material, the inside is sealed under reduced pressure. it will be composed On the other hand, most of the conventional vacuum insulators used aluminum as their outer shell material. However, since aluminum is thin and fragile, there is a problem that the internal vacuum state is broken even by a slight external impact. In addition, the conventional vacuum insulator has a problem in that the junction between the resins falls off after a certain time has elapsed, as the outer skin materials are fused to each other using a resin and the internal vacuum is broken.

Therefore, in this embodiment, stainless steel is used as the material of the outer covering of the common plate 100 and the vacuum insulation unit 200, and the common plate 100 and the outer sheath are integrated by welding along the vicinity of the edge of the outer sheath to integrate the vacuum insulation unit. (200) was constructed.

The vacuum heat dissipation unit 300 is sealed with the common plate 100 to form an internal space in a vacuum state, and an external member 310 having a contact surface for supporting or adhering to the heat source (heating element, heating element) of the applied product; A heat transfer medium (not shown) filled in a partial space in the inner space between the common plate 100 and the outer member 310, and one surface are in close contact with the inner surface of the common plate 100 or the outer member 310 to transfer heat A sheet 320 that lifts the medium in the opposite direction of gravity to enable condensation and evaporation, and a mesh member that is in close contact with the other surface of the sheet 320 and the other inner surface of the common plate 100 or outer member 310, respectively 330 is included.

The outer member 310 is made of the same stainless material as the outer shell material of the common plate 100 and the vacuum insulator 200 . Therefore, the common plate 100 and the outer member 310 are integrated by welding along the vicinity of the edge of the outer member 310 in a state where the sheet 320 and the mesh member 330 as described above are positioned in the correct position, The vacuum heat dissipation unit 300 is formed through an injection of a heat transfer medium and a vacuum process, which will be described later.

The composite of this embodiment is configured to have a vacuum heat insulating part 200 and a vacuum heat dissipating part 300 on both sides with the common plate 100 interposed therebetween. Accordingly, the common plate 100 and the outer covering material of the vacuum heat insulating unit 200 must be welded, and the common plate 100 and the outer member 310 of the vacuum heat dissipating unit 300 must be welded. By the way, since the vacuum insulation unit 200 must discharge the air therein, a vacuum operation must be performed at a high temperature, and the vacuum heat dissipation unit 300 performs a vacuum operation at a low temperature as the heat transfer medium is filled therein. Should be. That is, due to the respective characteristics of the vacuum heat insulating unit 200 and the vacuum heat dissipating unit 300 , it is difficult to manufacture at the same time to have both functions at the same time as manufacturing processes are different from each other.

Therefore, the operation sequence of forming the vacuum heat insulating unit 200 and the vacuum heat dissipating unit 300 is important. If, after the vacuum heat dissipation unit 300 is formed first, and then the vacuum heat insulating unit 200 is formed, the temperature rises when performing a vacuum operation at a high temperature to form the vacuum heat insulating unit 200 . A problem may occur in the sheet 320 constituting the vacuum heat dissipation unit 300 . That is, since the temperature rises to 200-300° C. during high-temperature vacuum operation and a problem may occur in the sheet 320, there is a problem in that it is necessary to select and use a suitable sheet.

Therefore, after welding the common plate 100 and the outer covering of the vacuum insulator 200 , the vacuum insulator 200 is first formed through a high-temperature vacuum operation. Then, after welding the common plate 100 and the outer member 310 of the vacuum heat dissipation unit 300, the vacuum heat dissipation unit 300 is formed through a low-temperature vacuum operation. At this time, in welding the common plate 100 and the outer member 310 for vacuum heat dissipation, the outside of the welding line between the common plate 100 and the outer sheath is welded so as not to break the vacuum insulation of the vacuum insulating unit 200. unify Therefore, the welding line for vacuum heat dissipation is located outside the welding line for vacuum insulation.

On the other hand, the outer member 310 is configured to have a contact surface 312 for supporting or adhering to the heat source of the applied product. Here, the contact surface 312 may be located on the same plane as other parts of the outer member as shown in FIG. 3 or may be configured to protrude from other parts as shown in FIG. 2 . For example, as the contact surface 312 is formed to protrude, when a large internal space corresponding to the protruding thickness is formed between the common plate 100 and the outer member 310, a separate support member 340 is used. It is preferable to further provide so that the large internal space does not collapse during vacuum.

On the other hand, the common plate 100 and/or the outer member 310 may be configured to have an embossing part therein to prevent depression during vacuum, or to have a plurality of holes for fastening and fixing with other parts.

Accordingly, if the outer member 310 of this embodiment can be configured to dissipate heat generated from a heat source using the phase change principle of the heat transfer medium in a vacuum state, it may have various shapes, structures, and constitutional relationships depending on the applied product. applicable.

The sheet 320 has one surface in close contact with the inner surface of one side of the common plate 100 or the outer member 310 to raise the heat transfer medium in the reverse direction of gravity to enable condensation and evaporation, and the contact surface 312 is It has a width that can cover up to a certain area of the border including the one. More specifically, it is preferable to use a sheet 320 having a width that can cover all areas for condensation and evaporation. The sheet 320 should have high absorbency to the heat transfer medium, chemical resistance that does not react with the heat transfer medium, and capillary force that lifts the heat transfer medium in the opposite direction of gravity.

In addition, the sheet 320 preferably has a plurality of holes to have more efficient capillary force. Meanwhile, in this embodiment, the sheet 320 may use an inorganic material, an organic material, or a mixed sheet of an inorganic material and an organic material, in which absorption to a heat transfer medium and excellent capillary force are confirmed.

The mesh member 330 is in close contact with the other side surface of the sheet 320 and the other side inner surface of the common plate 100 or outer member 310, respectively, to fix the sheet 320 and to emit heat to the outside. Accordingly, it serves to provide a passage through which the condensed heat transfer medium can smoothly move along the sheet 320 toward the evaporator of the heat source. Accordingly, the mesh member 330 is configured to have the same width as the sheet 320 . The mesh member 330 is preferably made of STS 304, 316, or 430 material having a mesh structure and excellent high strength and corrosion resistance.

The heat transfer medium fills a partial space of the inner space formed between the common plate 100 and the outer member 310, absorbs heat generated from the evaporator of the heat source and evaporates, and contacts the external air. Heat is emitted by heat exchange with the atmosphere in the condensing part of the member, and it is condensed from the vapor state to the liquid state and moves to the evaporation part. Therefore, it is preferable to use a medium satisfying the above conditions as the heat transfer medium. For example, pure water can be used as the heat transfer medium.

On the other hand, in injecting the heat transfer medium into a partial space of the inner space formed between the common plate 100 and the outer member 310, a hole is drilled on one side of the outer member, and the heat transfer medium is injected into the hole. Weld (braze) a copper tube that can be used, and inject a heat transfer medium through the connected copper tube. Then, when the heat transfer medium is injected in this way, after cooling the heat transfer medium, forced exhaust through the copper tube is applied with a vacuum pump, the copper tube is sealed and air cooled at room temperature, thereby forming a vacuum heat dissipation unit 300 having a certain degree of vacuum inside. do.

In the heat dissipation mechanism of the vacuum heat dissipation unit 300 configured as described above, the contact surface 312 of the outer member in close contact with the heat source of the applied product becomes the main evaporation portion, and the portion other than the contact surface 312 in contact with external air becomes the condensing portion. That is, when heat is introduced from the evaporator, the inside is in a vacuum state. When the heat transfer medium evaporates at a certain temperature and changes to a vapor state and reaches a saturated state, the vapor moves along the internal voids and heat exchanges with the atmosphere to release heat. and condensed from vapor to liquid again. The condensed heat transfer medium is absorbed into the sheet 320 . On the other hand, the heat transfer medium absorbed by the sheet 320 moves in the direction of gravity along the sheet 320 where the evaporator is located, and then discharges heat to the outside through the repetition of the same process described above.

In addition, the vacuum heat dissipation unit 300 can more efficiently dissipate heat generated from the heat source of the applied product by repeating evaporation and condensation at a low temperature of the heat transfer medium as the internal space has a vacuum state. In addition, the vacuum heat dissipation unit 300 dissipates heat using the phase change principle of the heat transfer medium, and thermal diffusion occurs through convection generated by the atmospheric pressure difference according to the phase change, and heat generated from the heat source of the applied product at a faster rate Efficient heat dissipation is possible.

Hereinafter, a method for manufacturing a composite having thermal insulation and heat dissipation functions of this embodiment configured as described above will be described.

4 is a flowchart for the manufacturing process of the composite according to the present invention. 1 and 4, the composite of this embodiment is configured to have a vacuum insulator 200 and a vacuum heat dissipating unit 300 on both sides with a common plate 100 interposed therebetween. Accordingly, the common plate 100 and the outer covering material of the vacuum heat insulating unit 200 must be welded, and the common plate 100 and the outer member 310 of the vacuum heat dissipating unit 300 must be welded. However, for the same reason as described above, first, the common plate 100 and the outer covering of the vacuum insulator 200 are welded, and then, the vacuum insulator 200 is formed through a high-temperature vacuum operation.

Then, after welding the common plate 100 and the outer member 310 of the vacuum heat dissipation unit 300, a heat transfer medium is injected in the above-described manner, and the vacuum heat dissipation unit 300 is formed through a low-temperature vacuum operation. At this time, in welding the common plate 100 and the outer member 310 for vacuum heat dissipation, the outside of the welding line between the common plate 100 and the outer covering material is welded so as not to break the vacuum insulation of the vacuum insulating unit 200 . to unify Therefore, the welding line for vacuum heat dissipation is located outside the welding line for vacuum insulation. Through this manufacturing process, the composite of this embodiment capable of simultaneously performing vacuum insulation and vacuum heat radiation is completed.

5 and 6 are schematic diagrams of variants of the composite according to the present invention. As shown in FIGS. 5 and 6 , in configuring the composite, the vacuum insulating unit 200 may be relatively small or larger than the vacuum heat dissipating unit 300 . At this time, it is possible to implement in various structures and shapes, such as the vacuum heat insulating unit 200 is located biased to one side as shown in FIG. 5 or the vacuum heat dissipating unit 300 is located in the center as shown in FIG. 6 . That is, it is possible to freely adjust and/or change the insulating area and/or the heat dissipating area so as to be suitable for the application product to be described later. Even if the composite is deformed and configured in this way, the common plate 100 preferably has a size corresponding to the size of the outer member of the vacuum heat dissipation unit 300 , and the welding line for vacuum heat dissipation is the welding line for vacuum insulation. should be located outside.

These complexes having various structures and shapes can be applied to various fields such as fuel cells, military, OLED TVs, and micro LED TVs. For example, in the case of a box in which an external cold temperature should not be introduced and an internal temperature should not be high, such as a box with built-in IP equipment, it is very effective when using the composite of this embodiment in which vacuum insulation and vacuum heat dissipation are possible at the same time. On the other hand, when used as a battery case, it is possible to efficiently respond to the external environment, such as insulating the heat coming from the outside and dissipating the heat generated inside.

7 is a schematic diagram of an example in which the composite according to the present invention is applied to an OLED TV. As shown in FIG. 7 , in the case of an OLED TV, a board such as a power board, a Ticon board, and a main board is attached to a partial area of the rear surface of the display. Therefore, the heat generated by the display is transferred to the above board attached to the back to affect it, and also the heat generated from the board affects the display in contact with it. That is, a temperature difference occurs between the part of the display that the board is in contact with and the part that does not, which affects the picture quality. That is, as the display has different temperature differences, there may be a problem in that it is not possible to provide a fine but uniform image quality.

Therefore, as shown in FIG. 7, the composite as shown in FIG. 1 is disposed and fixed between the display and the board, and the vacuum insulation unit 200 is configured to have a size corresponding to the rear surface in contact with the display, thereby insulating the entire rear surface of the display. The vacuum heat dissipation unit 300 is configured to be larger than the surface that the board is in contact with to dissipate the heat generated from the board, thereby blocking heat transfer between the display and the board to provide a homogeneous image quality through the display and heat generated from the board. can be efficiently dissipated.

In the above, the technical details of the composite having a thermal insulation and heat dissipation function of the present invention and a manufacturing method thereof have been described together with the accompanying drawings, but this is an exemplary description of the best embodiment of the present invention. Therefore, the present invention is not limited to the embodiments described above, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention, so such modifications Examples or modifications will also fall within the scope of the claims of this invention.

100: common plate 200: vacuum insulation
300: vacuum heat dissipation unit 310: external member
312: contact surface 320: sheet
330: mesh member 340: support member

Claims (6)

It includes a vacuum heat insulating part formed on one side with a common plate of a certain area in between and a vacuum heat dissipating part formed on the other side to dissipate heat generated from the heat source of the applied product in a vacuum state using the phase change principle of the heat transfer medium. , A method for manufacturing a composite having thermal insulation and heat dissipation functions in which the common plate, the outer covering material of the vacuum heat insulating unit, and the outer member of the vacuum heat dissipation unit are made of the same stainless material,
After welding the common plate and the outer covering of the vacuum insulator, forming the vacuum insulator through a high-temperature vacuum operation;
After welding the common plate and the outer member of the vacuum heat dissipation unit so that the welding line is located outside the welding line for vacuum insulation of the vacuum insulating unit, a heat transfer medium is injected therein, and the vacuum heat dissipation is performed through a low-temperature vacuum operation. A method of manufacturing a composite having thermal insulation and heat dissipation functions, comprising the step of forming a part. The method according to claim 1,
The common plate has a size corresponding to the size of the outer member of the vacuum heat dissipation unit,
The vacuum heat insulating part is the same as, relatively smaller, or larger than the vacuum heat dissipation part. The method according to claim 1,
The vacuum heat dissipation unit is welded to the common plate to form an internal space in a vacuum state, and an external member having a contact surface for supporting or closely adhering to a heat source of an applied product, and a partial space in the internal space between the common plate and the external member A heat transfer medium to be filled, a sheet in which one surface is in close contact with the inner surface of the common plate or the outer member to draw up the heat transfer medium in a direction opposite to gravity to enable condensation and evaporation, and the other surface of the sheet and the common A method of manufacturing a composite having heat insulation and heat dissipation functions, comprising a mesh member that is in close contact with the plate or the other inner surface of the outer member, respectively. A composite having thermal insulation and heat dissipation functions, characterized in that manufactured by the manufacturing method according to any one of claims 1 to 3. delete delete

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