Sound-absorbing and heat-insulating foam for air-conditioning duct

Abstract

The utility model relates to the technical field of sound-absorbing cotton, in particular to sound-absorbing and heat-insulating foam for an air-conditioning duct, which comprises a first heat-insulating layer, a second heat-insulating layer and an absorbing layer, the first heat-insulating layer and the second heat-insulating layer are both made of polyurethane foam, one side of the absorbing layer is adhered to the first heat-insulating layer, and the other side of the absorbing layer is adhered to the second heat-insulating layer. The other side of the absorption layer is bonded with the second heat insulation layer, the side, away from the absorption layer, of the first heat insulation layer is coated with glue, the absorption layer is used for absorbing moisture condensed by the air conditioner air pipe, and the side, away from the absorption layer, of the second heat insulation layer is compounded with a non-woven fabric layer. When the heat insulation foam is installed, the heat insulation foam can be directly adhered to the surface of the air conditioner air pipe through glue coated on the first heat insulation layer, installation of the heat insulation foam is facilitated, the air conditioner air pipe is wrapped by the heat insulation foam more tightly, and the heat insulation performance of the heat insulation foam is enhanced.

Description

Technical Field

[0001] This application relates to the technical field of heat insulation cotton, and in particular to a sound-absorbing and heat-insulating foam for air-conditioning ducts. Background Art

[0002] Broadly speaking, cotton products that can achieve heat insulation effects are collectively referred to as heat insulation cotton. Heat insulation cotton has characteristics such as high temperature resistance, non-flammability, and low thermal conductivity. Currently, heat insulation cotton widely used in industry is processed and produced using glass fiber as the material, such as fiberglass cotton and glass wool. Such products can be further processed by laminating aluminum foil and fiberglass cloth to make their uses more extensive. When an air-conditioning duct is working, heat insulation cotton is needed to reduce the temperature influence of the external air on the duct, so as to reduce energy waste.

[0003] In the existing technology, the heat insulation cotton for air-conditioning ducts often cooperates with the duct through duct flanging. There will be a large gap between the heat insulation cotton and the air conditioner, so the heat preservation effect is poor and the noise generated during the operation of the air-conditioning duct cannot be well reduced. Summary of the Utility Model

[0004] The embodiments of this application provide a sound-absorbing and heat-insulating foam for air-conditioning ducts, which can improve the technical problem of poor heat preservation effect of the heat insulation cotton caused by a large gap between the heat insulation cotton and the air-conditioning duct after installation in the existing technology.

[0005] The embodiments of this application provide a sound-absorbing and heat-insulating foam for air-conditioning ducts, including a first heat-insulating layer, a second heat-insulating layer, and a absorption layer. Both the first heat-insulating layer and the second heat-insulating layer are made of polyurethane foam. One side of the absorption layer is bonded to the first heat-insulating layer, and the other side of the absorption layer is bonded to the second heat-insulating layer. Glue is coated on the side of the first heat-insulating layer away from the absorption layer. The absorption layer is used to absorb the moisture condensed on the air-conditioning duct. A non-woven fabric layer is laminated on the side of the second heat-insulating layer away from the absorption layer.

[0006] In the above technical solution of the embodiments of this application, at least the following technical effects are achieved: When installing the heat insulation cotton, the staff can directly use the glue coated on the first heat-insulating layer to bond the heat insulation cotton to the surface of the air-conditioning duct, so that the heat insulation cotton can fit more closely with the air-conditioning duct, increasing the heat preservation effect of the heat insulation cotton. The polyurethane foam is filled with air cavities and has excellent heat insulation effects, which can effectively reduce the heat exchange between the air-conditioning duct and the external air and reduce the energy consumption of the air conditioner. Since a small amount of air contains moisture when it penetrates through the heat insulation cotton and contacts the air-conditioning duct, the moisture will condense and adhere to the air-conditioning duct. After the moisture is absorbed by the first heat-insulating layer, the air inside the first heat-insulating layer will be discharged, reducing the heat insulation effect of the first heat-insulating layer. The absorption layer will absorb the moisture inside the first heat-insulating layer, reducing the influence of moisture on the heat insulation effect of the first heat-insulating layer.

[0007] The sound-absorbing and heat-insulating foam for air-conditioning ducts provided by the embodiments of the present application can be directly bonded to the surface of the air-conditioning duct through the glue coated on the first heat-insulating layer, which facilitates the installation of the heat-insulating foam and enables the heat-insulating foam to wrap the air-conditioning duct more tightly, enhancing the heat-insulating performance of the heat-insulating foam.

[0008] In some embodiments, the absorption layer is made of a water-absorbing material, and the interior of the water-absorbing material has a porous structure.

[0009] In some embodiments, an easily tearable plastic film is bonded to the side of the first heat-insulating layer away from the absorption layer.

[0010] In some embodiments, a sound-absorbing layer is bonded to the side of the non-woven fabric layer away from the second heat-insulating layer, and the sound-absorbing layer is made of glass fiber sound-absorbing cotton.

[0011] In some embodiments, a sound-insulating felt is bonded to the side of the sound-absorbing layer away from the non-woven fabric layer.

[0012] In some embodiments, an aluminum foil is bonded to the side of the sound-insulating felt away from the sound-absorbing layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 is a schematic diagram of the overall structure of a sound-absorbing and heat-insulating foam for air-conditioning ducts provided by the embodiments of the present application;

[0015] Figure 2 is a cross-sectional view of a sound-absorbing and heat-insulating foam for air-conditioning ducts provided by the embodiments of the present application;

[0016] Figure 3 is Figure 2 an enlarged view of part A of

[0017] Among them, the reference numerals in the drawings are as follows:

[0018] 1. First heat-insulating layer; 2. Second heat-insulating layer; 3. Absorption layer; 4. Easily tearable plastic film; 5. Non-woven fabric layer; 6. Sound-absorbing layer; 7. Sound-insulating felt; 8. Aluminum foil. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer and more understandable, the following further details this application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and do not limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion.

[0021] Broadly speaking, cotton products that can achieve heat insulation effects are collectively referred to as heat insulation cotton. Heat insulation cotton has the characteristics of high temperature resistance, non-flammability, low thermal conductivity, etc. Currently, heat insulation cotton widely used in industry is processed and produced using glass fiber as the material, such as fiberglass cotton and glass wool. Such products can be further processed by laminating aluminum foil and fiberglass cloth to make their uses more extensive. When the air-conditioning duct is working, heat insulation cotton is needed to reduce the temperature influence of the external air on the duct and reduce energy waste.

[0022] In the existing technology, the heat insulation cotton for air-conditioning ducts often cooperates with the duct through the duct flange. There will be a large gap between the heat insulation cotton and the air conditioner, so the heat preservation effect is poor and the noise generated during the operation of the air-conditioning duct cannot be well reduced.

[0023] Based on this, in order to improve the technical problem of poor heat preservation effect of the heat insulation cotton caused by a large gap between the heat insulation cotton and the air-conditioning duct in the existing technology, the embodiments of this application provide the following solutions.

[0024] Please refer to Figures 1 to 3 , the embodiments of this application provide a sound-absorbing and heat-insulating foam for air-conditioning ducts. A sound-absorbing and heat-insulating foam for air-conditioning ducts includes a first heat-insulating layer 1, a second heat-insulating layer 2, and a sound-absorbing layer 3.

[0025] Please refer to Figures 1 to 3 , both the first heat-insulating layer 1 and the second heat-insulating layer 2 are made of polyurethane foam. One side of the sound-absorbing layer 3 is bonded to the first heat-insulating layer 1, and the other side of the sound-absorbing layer 3 is bonded to the second heat-insulating layer 2. The side of the first heat-insulating layer 1 away from the sound-absorbing layer 3 is coated with glue and bonded with an easily tearable plastic film 4. The sound-absorbing layer 3 is made of a water-absorbing material, and the interior of the water-absorbing material is a porous structure. The sound-absorbing layer 3 is used to absorb the moisture condensed in the air-conditioning duct. The side of the second heat-insulating layer 2 away from the sound-absorbing layer 3 is laminated with a non-woven fabric layer 5.

[0026] As described above, for the sound-absorbing and heat-insulating foam used in the air-conditioning duct provided in the embodiment of the present application, when installing the heat-insulating cotton, the staff can tear the easily torn plastic film 4 from the first heat-insulating layer 1 and then directly bond the heat-insulating cotton to the surface of the air-conditioning duct by using the glue coated on the first heat-insulating layer 1, which can make the heat-insulating cotton fit more closely to the air-conditioning duct and enhance the heat-insulating effect of the heat-insulating cotton; the easily torn plastic film 4 can protect the glue coated on the surface of the first heat-insulating layer 1, and allows the heat-insulating cotton to be rolled up and bundled during production, which is convenient for the storage and transportation of the heat-insulating cotton; the polyurethane foam is filled with air cavities and has excellent heat-insulating effect. The first heat-insulating layer 1 and the second heat-insulating layer 2 made of polyurethane foam can effectively reduce the heat exchange between the air-conditioning duct and the external air and reduce the energy consumption of the air conditioner; due to the low mechanical strength of the polyurethane foam, it is easy to break when subjected to external extrusion or collision, and the non-woven fabric layer 5 can protect the second heat-insulating layer 2; when a small amount of air contacts the air-conditioning duct through the heat-insulating cotton, the moisture contained in it will condense and adhere to the air-conditioning duct. After the moisture is absorbed by the first heat-insulating layer 1, the air inside the first heat-insulating layer 1 will be discharged, resulting in a decrease in the heat-insulating effect of the first heat-insulating layer 1. The absorption layer 3 is made of a porous water-absorbing material and has excellent water-absorbing performance. It can absorb and store the moisture inside the first heat-insulating layer 1, and the moisture can slowly evaporate into the air after the air conditioner is turned off, avoiding the decrease in the heat-insulating effect of the first heat-insulating layer 1 due to the accumulation of moisture inside the first heat-insulating layer 1.

[0027] In some embodiments, please also refer to Figure 2 and Figure 3 , on the side of the non-woven fabric layer 5 away from the second heat-insulating layer 2, a sound-absorbing layer 6 is bonded. The sound-absorbing layer 6 is made of glass fiber sound-absorbing cotton. On the side of the sound-absorbing layer 6 away from the non-woven fabric layer 5, a sound-insulating felt 7 is bonded. On the side of the sound-insulating felt 7 away from the sound-absorbing layer 6, an aluminum foil 8 is bonded.

[0028] With such a setting, when the air conditioner is working, the flowing air inside the air-conditioning duct will cause noise in the air-conditioning duct, reducing the comfort of the use environment. The glass fiber sound-absorbing cotton is porous inside, and can convert the vibration energy of the air inside it into the vibration energy of the sound-absorbing cotton material, thereby weakening the passing sound waves. The sound-absorbing layer 6 can absorb part of the noise emitted by the duct and play a noise reduction role. The sound-insulating felt 7 has a strong reflection effect on sound waves. After the noise sound waves are weakened by the sound-absorbing layer 6, the sound-insulating felt 7 will reflect part of the noise sound waves back to the sound-absorbing layer 6, and the sound-absorbing layer 6 will continue to absorb the noise sound waves, thus enhancing the overall noise reduction effect of the heat-insulating cotton; the aluminum foil 8 has good moisture-proof effect, which can reduce the air outside the heat-insulating cotton from entering the inside of the heat-insulating cotton and condensing to reduce the heat-insulating effect of the heat-insulating cotton. When a fire occurs outside the heat-insulating cotton, the aluminum foil 8 can also isolate the open fire and prevent the materials inside the heat-insulating cotton from contacting the air, playing a flame retardant role.

[0029] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

1. A sound-absorbing and heat-insulating foam for air-conditioning ducts, characterized in that: It includes a first heat insulation layer (1), a second heat insulation layer (2) and an absorption layer (3). Both the first heat insulation layer (1) and the second heat insulation layer (2) are made of polyurethane foam. One side of the absorption layer (3) is bonded to the first heat insulation layer (1), and the other side of the absorption layer (3) is bonded to the second heat insulation layer (2). Glue is coated on the side of the first heat insulation layer (1) away from the absorption layer (3). The absorption layer (3) is used to absorb the moisture condensed in the air-conditioning duct. A non-woven fabric layer (5) is laminated on the side of the second heat insulation layer (2) away from the absorption layer (3).

2. The sound-absorbing and heat-insulating foam for an air-conditioning duct according to claim 1, wherein: The absorption layer (3) is made of a water-absorbing material, and the interior of the water-absorbing material has a porous structure.

3. The sound-absorbing and heat-insulating foam for air-conditioning ducts according to claim 1, wherein: An easily tearable plastic film (4) is bonded to the side of the first heat insulation layer (1) away from the absorption layer (3).

4. A sound-absorbing and heat-insulating foam for an air-conditioning duct according to any one of claims 1-3, characterized in that: A sound-absorbing layer (6) is bonded to the side of the non-woven fabric layer (5) away from the second heat insulation layer (2). The sound-absorbing layer (6) is made of glass fiber sound-absorbing cotton.

5. The sound-absorbing and heat-insulating foam for air-conditioning ducts according to claim 4, characterized in that: A sound insulation felt (7) is bonded to the side of the sound-absorbing layer (6) away from the non-woven fabric layer (5).

6. The sound-absorbing and heat-insulating foam for air-conditioning ducts according to claim 5, wherein: An aluminum foil (8) is bonded to the side of the sound insulation felt (7) away from the sound-absorbing layer (6).

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