A wave absorbing patch

Abstract

The utility model discloses an absorbing patch, comprising a second absorbing layer, a first absorbing layer bonded to the top of the second absorbing layer, a plurality of embedded through holes opened at the top of the first absorbing layer, and a heat sink embedded inside the plurality of embedded through holes. The utility model absorbs electromagnetic waves passing through the first absorbing layer and the second absorbing layer, and the heat absorbed and converted is accumulated in the first absorbing layer and the second absorbing layer and blocked by the heat insulation layer, the heat on the surface of the first absorbing layer is directly dissipated into the air, and the heat in the first absorbing layer and the second absorbing layer enters the inside of the heat sink through the connecting groove and direct contact with the heat sink, and the heat sink quickly transfers the absorbed heat to the outside, realizing the rapid cooling of the first absorbing layer and the second absorbing layer, reducing the overheating phenomenon of the equipment caused by the heat generated during the operation of the absorbing plate, and improving the service life of the equipment and the absorbing plate.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic wave absorption, in particular to a wave absorbing patch. Background Art

[0002] An absorbing patch is a device used to absorb electromagnetic waves. It can absorb electromagnetic waves and convert them into heat or other forms of energy. Depending on the frequency and application field, the absorbing material can be divided into low-frequency, medium-frequency and high-frequency types. It is widely used in areas such as ship radar, communication and measurement.

[0003] In the prior art, for example, Chinese patent CN216584840U discloses an absorbing patch for a wind farm tower, comprising an adhesive layer, an absorbing layer and an outer protective layer, wherein the absorbing layer is arranged on one side surface of the adhesive layer, and the outer protective layer is arranged on the side surface of the absorbing layer away from the adhesive layer, wherein the adhesive layer is made of butyl rubber, the absorbing layer is made of absorbing material, and the outer protective layer is made of thermoplastic polyolefin elastomer.

[0004] Most of the current absorbing patches are only composed of double-sided tape and absorbing materials. Since the absorbing materials can convert electromagnetic waves into heat energy, the attached devices can easily absorb them and cause the devices to overheat, thus shortening the service life of the devices. Utility Model Content

[0005] The purpose of the utility model is to provide a wave absorbing patch to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an absorbing patch, comprising a second absorbing layer, a first absorbing layer bonded to the top of the second absorbing layer, a plurality of embedded through holes are provided at the top of the first absorbing layer, a heat sink is embedded inside the plurality of embedded through holes, a plurality of connecting grooves are provided at the bottom of the first absorbing layer, the plurality of connecting grooves are respectively connected to the inside of the plurality of embedded through holes, a heat insulating layer is bonded to the bottom of the second absorbing layer, wherein, by providing the second absorbing layer, electromagnetic waves passing through the embedded through holes can be absorbed to improve the absorption effect, and by providing the heat sink, the first absorbing layer and the second absorbing layer can be connected to the heat sink. The heat is quickly absorbed and conducted to the outside for heat dissipation, preventing the No. 1 absorbing layer and the No. 2 absorbing layer from changing the physical and chemical properties of the constituent materials due to excessively high temperature, thereby improving service life. The material used for the heat sink is graphene, which has extremely high thermal conductivity and is suitable for occasions requiring efficient heat conduction. By setting a connecting groove, a gap can be created between the No. 1 absorbing layer and the No. 2 absorbing layer to improve the volatilization effect of heat. By setting a thermal insulation layer, the temperature can be isolated to prevent the temperature from being conducted to the inside of the equipment. The material used for the thermal insulation layer is an aluminum foil composite material, which has the property of low thermal conductivity and good thermal insulation effect.

[0007] As a further preferred embodiment of the present technical solution, an adhesive layer is bonded to the bottom end of the thermal insulation layer for adhesion installation with the equipment.

[0008] As a further preferred embodiment of the present technical solution, a corrugated groove is provided at the bottom end of the thermal insulation layer, and the top end of the adhesive layer is engaged with the inner surface of the corrugated groove. By providing the corrugated groove, the connection area between the adhesive layer and the thermal insulation layer can be increased, thereby improving the bonding strength, preventing debonding, and increasing the service life.

[0009] As a further preferred embodiment of the present technical solution, a PTE film is bonded to the bottom of the adhesive layer to protect the adhesive layer so that it can maintain a certain adhesion when not in use.

[0010] As a further preferred embodiment of the present technical solution, a protective film is bonded to the top of the first absorbing layer to protect the first absorbing layer and the second absorbing layer to prevent foreign substances from directly contacting them, thereby increasing the service life of the absorbing sheet.

[0011] The utility model provides a wave absorbing patch, which has the following beneficial effects:

[0012] The utility model absorbs the electromagnetic waves passing through the first absorbing layer and the second absorbing layer, and the heat converted by the absorption is accumulated in the first absorbing layer and the second absorbing layer and blocked by the heat insulation layer, the heat located on the surface of the first absorbing layer is directly dissipated into the air, and the heat located in the first absorbing layer and the second absorbing layer enters the heat sink through the connecting groove and the direct contact with the heat sink, and the heat sink quickly transfers the absorbed heat to the outside, so that the first absorbing layer and the second absorbing layer are quickly cooled, the overheating phenomenon of the equipment caused by the heat generated by the absorbing plate during operation is reduced, and the service life of the equipment and the absorbing plate is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is an exploded schematic diagram of the overall structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the exploded structure of the first absorbing layer of the utility model.

[0016] In the figure: 1. No. 1 absorbing layer; 2. No. 2 absorbing layer; 3. Heat insulation layer; 4. Adhesive layer; 5. PTE film; 6. Protective film; 7. Corrugated groove; 8. Embedded through hole; 9. Heat sink; 10. Connecting groove. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] The utility model provides a technical solution: Figure 1-3 As shown, in this embodiment, an absorbing patch includes a second absorbing layer 2, a first absorbing layer 1 is bonded to the top of the second absorbing layer 2, a plurality of embedded through holes 8 are provided at the top of the first absorbing layer 1, a heat sink 9 is embedded inside the plurality of embedded through holes 8, a plurality of connecting grooves 10 are provided at the bottom of the first absorbing layer 1, the plurality of connecting grooves 10 are respectively connected to the inside of the plurality of embedded through holes 8, a heat insulating layer 3 is bonded to the bottom of the second absorbing layer 2, wherein, by providing the second absorbing layer 2, the electromagnetic waves passing through the embedded through holes 8 can be absorbed to improve the absorption effect, and by providing the heat sink 9, the heat in the first absorbing layer 1 and the second absorbing layer 2 can be quickly absorbed. The heat is collected and conducted to the outside for heat dissipation, so as to prevent the physical and chemical properties of the constituent materials of the first absorbing layer 1 and the second absorbing layer 2 from changing due to excessively high temperature, and to improve the service life. The material used for the heat sink 9 is graphene, which has extremely high thermal conductivity and is suitable for occasions requiring efficient heat conduction. By providing the connecting groove 10, a gap can be created between the first absorbing layer 1 and the second absorbing layer 2, so as to improve the volatilization effect of heat. By providing the heat insulation layer 3, the temperature can be isolated to prevent the temperature from being conducted to the inside of the device. The material used for the heat insulation layer 3 is an aluminum foil composite material, which has the property of low thermal conductivity and good heat insulation effect.

[0019] like Figure 1 and Figure 2 As shown, an adhesive layer 4 is bonded to the bottom end of the thermal insulation layer 3, and the adhesive layer 4 is provided for bonding and installation with the equipment.

[0020] like Figure 1 and Figure 2 As shown, a corrugated groove 7 is provided at the bottom end of the thermal insulation layer 3, and the top end of the adhesive layer 4 is engaged with the inner surface of the corrugated groove 7. By providing the corrugated groove 7, the connection area between the adhesive layer 4 and the thermal insulation layer 3 can be increased, thereby improving the bonding strength, preventing debonding, and improving the service life.

[0021] like Figure 1 and Figure 2 As shown, a PTE film 5 is bonded to the bottom of the adhesive layer 4 to protect the adhesive layer 4 so that it can maintain a certain degree of adhesion when not in use.

[0022] like Figure 1 and Figure 2 As shown, a protective film 6 is bonded to the top of the first absorbing layer 1 to protect the first absorbing layer 1 and the second absorbing layer 2 to prevent foreign substances from directly contacting them and to increase the service life of the absorbing sheet.

[0023] The utility model provides a wave absorbing patch, and the specific working principle is as follows:

[0024] When electromagnetic waves pass through a device with an absorbing sheet attached, the first absorbing layer 1 and the second absorbing layer 2 absorb the electromagnetic waves passing through, and the absorbed and converted heat is accumulated in the first absorbing layer 1 and the second absorbing layer 2 and blocked by the heat insulation layer 3 to prevent the heat from directly entering the device. The heat on the surface of the first absorbing layer 1 is directly dissipated into the air, while the heat in the first absorbing layer 1 and the second absorbing layer 2 enters the heat sink 9 through the connecting groove 10 and direct contact with the heat sink 9. The heat sink 9 quickly transfers the absorbed heat to the outside, and quickly cools the first absorbing layer 1 and the second absorbing layer 2.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wave absorbing patch, comprising a second wave absorbing layer (2), characterized in that: The top of the second absorbing layer (2) is bonded to the first absorbing layer (1); the top of the first absorbing layer (1) is provided with a plurality of embedded through holes (8); the plurality of embedded through holes (8) are each internally embedded with a heat sink (9); the bottom of the first absorbing layer (1) is provided with a plurality of connecting grooves (10); the plurality of connecting grooves (10) are respectively connected to the interior of the plurality of embedded through holes (8); and the bottom of the second absorbing layer (2) is bonded with a heat insulating layer (3).

2. The microwave absorbing patch according to claim 1, characterized in that: An adhesive layer (4) is bonded to the bottom end of the heat insulation layer (3).

3. The absorbing patch according to claim 2, characterized in that: The bottom end of the heat insulation layer (3) is provided with a corrugated groove (7), and the top end of the adhesive layer (4) is embedded in the inner surface of the corrugated groove (7).

4. The absorbing patch according to claim 3, characterized in that: The bottom end of the adhesive layer (4) is bonded with a PTE film (5).

5. The microwave absorbing patch according to claim 4, characterized in that: A protective film (6) is bonded to the top of the first absorbing layer (1).

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