High-damping and high-sound-absorption-coefficient sound insulation cotton for air conditioner

Abstract

The utility model provides high-damping and high-sound-absorption-coefficient air conditioner sound insulation cotton, which relates to the technical field of air conditioner sound insulation cotton and comprises an air conditioner outdoor unit, a metal plate shell arranged on the outer side of the air conditioner outdoor unit, an opening formed in one side of the outer end of the metal plate shell and a sound insulation component arranged in the metal plate shell. The sound insulation assembly is used for restraining the damping effect of a metal plate shell and absorbing reflection noise in an air conditioner outdoor unit electric appliance bin and comprises a sound absorption layer, a sound insulation layer and a bonding layer. According to the high-damping and high-sound-absorption-coefficient sound insulation cotton for the air conditioner, the sound absorption layer and the sound insulation layer in the sound insulation assembly can restrain noise generated by resonance of the metal plate shell, and through the sandwich structure design of the sound absorption cotton, the sound insulation layer and the pressure-sensitive adhesive, the resonance of the metal plate shell can be reduced; and cavity noise generated by noise reflection in the air conditioner outdoor unit can be reduced, and the noise of the whole machine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning sound-insulating cotton, in particular to an air-conditioning sound-insulating cotton with high damping and high sound absorption coefficient. Background Art

[0002] The air conditioner outdoor unit is an important part of the air conditioning system. It is usually placed outdoors to discharge the heat generated during the cooling or heating process of the air conditioner. Its main function is to ensure the effect of indoor air conditioning while maintaining the comfort of indoor air. When the air conditioner outdoor unit is in use, it is usually sealed with a sheet metal shell. In order to reduce the impact of noise, it is extremely important to reduce the noise of the air conditioner outdoor unit and the sheet metal shell. The industry now mostly uses crest-shaped sponges to be pasted on the sheet metal shell by means of backing pressure-sensitive adhesive to deal with noise problems, or uses asphalt damping sheets to be pasted on the sheet metal shell to deal with resonance problems, but there will be the following problems:

[0003] 1. The crest sponge is a kind of sponge that has been specially processed by equipment to form a convex and concave wave shape. Its interior is full of small gaps and semi-open pores. It can absorb a large amount of incoming sound wave energy to attenuate the sound wave and reduce the interference and reverberation of reflected sound. However, it has good water and dust absorption properties. The noise reduction effect becomes worse when used outdoors for a long time. At the same time, it has poor weather resistance and poor sound insulation performance.

[0004] 2. Asphalt damping sheet, which softens the asphalt by heating and becomes sticky, and is attached to the sheet metal, has a certain weight-increasing and damping effect. However, when the asphalt is heated, the temperature is relatively high and toxic gases are volatilized. When the asphalt is cooled, it will harden, and the damping effect will be reduced. It will be damaged or broken under long-term vibration conditions. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a high-damping and high-sound-absorbing coefficient air-conditioning sound-insulating cotton, in which the noise generated by the resonance of the sheet metal shell can be suppressed through the sound-absorbing layer and the sound-insulating layer in the sound-insulating component, and the sandwich structure design of "sound-absorbing cotton + sound-insulating layer + pressure-sensitive adhesive" can reduce the resonance of the sheet metal shell while reducing the cavity noise generated by the noise reflection in the air-conditioning outdoor unit, thereby reducing the noise of the entire machine.

[0006] The technical problem to be solved by the utility model is achieved by adopting the following technical solutions:

[0007] A high damping and high sound absorption coefficient air conditioner sound insulation cotton, comprising: an air conditioner outdoor unit, a sheet metal shell arranged on the outside of the air conditioner outdoor unit, an opening opened on one side of the outer end of the sheet metal shell, and a sound insulation component arranged inside the sheet metal shell, which is used to suppress the damping effect of the sheet metal shell and absorb the reflected noise in the electrical compartment of the air conditioner outdoor unit, and the sound insulation component comprises: a sound absorbing layer, a sound insulation layer and an adhesive layer.

[0008] Preferably, the inner side and inner bottom of the sheet metal shell are provided with a sound-absorbing layer, a sound insulation layer is pasted on the inner side of the sound-absorbing layer, an adhesive layer is pasted on the inner side of the sound insulation layer, and the sound-absorbing layer, the sound insulation layer and the adhesive layer are arranged in a "sandwich structure", the interior of the sound-absorbing layer is made of a sound-absorbing cotton material with a three-dimensional skeleton structure constructed of polyester fiber and polypropylene fiber, the sound insulation layer is made of a sound insulation material of a high-density polyolefin resin, the adhesive layer is made of a pressure-sensitive adhesive material, a protective layer is pasted on the surface of the sound-absorbing layer, and the protective layer is made of a non-woven fabric material.

[0009] Preferably, the sound-absorbing layer, the sound-insulating layer and the adhesive layer are provided with frame frames on the outside, limiting grooves are provided inside the frame frames, and the frame frames are made of soft rubber material.

[0010] Preferably, limit blocks are respectively installed on both sides of the outer end of the sheet metal shell, and both ends of the sound absorbing layer and the sound insulation layer are close to the limit blocks. Mounting blocks are provided at positions close to the limit blocks on both sides of the outer end of the sheet metal shell, and mounting holes are opened on the mounting blocks.

[0011] The beneficial effects of the utility model are:

[0012] (1) The sound-absorbing layer and the sound-insulating layer in the sound-insulating assembly of the utility model can suppress the noise generated by the resonance of the sheet metal shell. Moreover, the sandwich structure design of "sound-absorbing cotton + sound-insulating layer + pressure-sensitive adhesive" can reduce the resonance of the sheet metal shell while also reducing the cavity noise generated by the noise reflection in the air conditioner outdoor unit, thereby reducing the noise of the entire machine. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 The utility model is a schematic diagram of the separated structure of the sound-absorbing layer, the sound-insulating layer and the adhesive layer.

[0015] Figure 3 It is a cross-sectional schematic diagram of the sound-absorbing layer of the utility model.

[0016] Figure 4 It is a schematic diagram of the sheet metal shell structure of the utility model.

[0017] Figure 5 It is a schematic diagram of the frame structure of the utility model.

[0018] Figure 6 This is a schematic diagram of the protective layer structure of the utility model.

[0019] Figure 7 It is a schematic diagram of the connection structure of the limit block, sheet metal shell and mounting block of the utility model.

[0020] Figure 8 For the utility model Figure 7 Enlarged structural diagram at A in the middle.

[0021] Figure 1-Figure 8 In: 1. Air conditioner outdoor unit; 2. Sheet metal shell; 201. Opening; 202. Sound absorbing layer; 203. Sound insulation layer; 204. Adhesive layer; 3. Frame; 301. Limiting groove; 4. Protective layer; 5. Limiting block; 6. Mounting block; 601. Mounting hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the present application.

[0023] The present application is described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] Example

[0025] like Figure 1-Figure 8 As shown, a high damping and high sound absorption coefficient air conditioner sound insulation cotton includes: an air conditioner outdoor unit 1, a sheet metal shell 2 arranged on the outside of the air conditioner outdoor unit 1, an opening 201 opened on one side of the outer end of the sheet metal shell 2, and a sound insulation component arranged inside the sheet metal shell 2, which is used to suppress the damping effect of the sheet metal shell 2 and absorb the reflected noise in the electrical compartment of the air conditioner outdoor unit 1, and the sound insulation component includes: a sound absorbing layer 202, a sound insulation layer 203 and an adhesive layer 204.

[0026] Among them, the inner side and inner bottom of the sheet metal shell 2 are provided with a sound-absorbing layer 202, the inner side of the sound-absorbing layer 202 is pasted with a sound-insulating layer 203, and the inner side of the sound-insulating layer 203 is pasted with an adhesive layer 204, and the sound-absorbing layer 202, the sound-insulating layer 203 and the adhesive layer 204 are arranged in a "sandwich structure". When the sheet metal shell 2 is assembled and used with the air-conditioning outdoor unit 1, the length and width of the sound-absorbing layer 202 and the sound-insulating layer 203 are cut according to the length and width of the sheet metal shell 2, and the sound-absorbing layer 202 and the sound-insulating layer 203 are cut by cold cutting, and then the adhesive surfaces of the sound-absorbing layer 202 and the sound-insulating layer 203 are coated with environmentally friendly white latex adhesive, and the environmentally friendly white latex adhesive is evenly applied, and then the sound-absorbing layer 202 and the sound-insulating layer 203 are aligned with each other and pasted together, and then at the bottom of the sound insulation layer 203 A double-sided adhesive layer 204 is attached, and the adhesive layer 204 is a pressure-sensitive adhesive material. After the adhesive layer 204 is attached, the bottom of the adhesive layer 204 is attached to the inner side and inner bottom of the sheet metal shell 2, and then the sound-absorbing layer 202 and the sound-insulating layer 203 are attached and fixed inside the sheet metal shell 2 for use. When the sheet metal shell 2 and the air-conditioning outdoor unit 1 are installed, the sound-absorbing layer 202 and the sound-insulating layer 203 just form a sound-insulating coating for the electrical appliances inside the air-conditioning outdoor unit 1. The sound-absorbing layer 202 and the sound-insulating layer 203 can suppress the noise generated by the resonance of the sheet metal shell 2, and through this "sound-absorbing cotton + sound-insulating layer + pressure-sensitive adhesive" sandwich structure design, it is possible to reduce the resonance of the sheet metal shell 2 while also reducing the cavity noise generated by the noise reflection in the air-conditioning outdoor unit 1, thereby reducing the noise of the entire machine.

[0027] Among them, the sound-absorbing layer 202 is made of a sound-absorbing cotton material with a three-dimensional skeleton structure constructed by polyester fiber and polypropylene fiber, the sound insulation layer 203 is made of a sound insulation material of a high-density polyolefin resin, and the adhesive layer 204 is made of a pressure-sensitive adhesive material. Since the sound-absorbing layer 202 is made of a sound-absorbing cotton material with a three-dimensional skeleton structure constructed by polyester fiber and polypropylene fiber, its sound absorption space structure is more concentrated, so the sound-absorbing layer 202 has a better sound absorption effect, and the sound insulation layer 203 is made of a sound insulation material of a high-density polyolefin resin, which can well block the transmission path of sound waves, and is attached to the sheet metal shell 2 after being adhered with pressure-sensitive adhesive, forming a good viscoelasticity, which can suppress the vibration of the sheet metal shell 2 and reduce the "buzzing" caused by the resonance of the sheet metal shell 2. At the same time, it can meet the environmental protection material requirements of RoHs 2.0, Reach, 0-VOC, and thus can meet export requirements.

[0028] Among them, the sound-absorbing layer 202, the sound-insulating layer 203 and the adhesive layer 204 are provided with a frame 3 outside, and a limiting groove 301 is provided inside the frame 3, and the frame 3 is made of soft rubber material. When the sound-absorbing layer 202, the sound-insulating layer 203 and the adhesive layer 204 are adhered and fixed together, the sound-absorbing layer 202, the sound-insulating layer 203 and the adhesive layer 204 form a whole. After the sound-absorbing layer 202 and the sound-insulating layer 203 are cut, the internal fibers will At this time, glue is applied on the inner wall of the limiting groove 301, and the frame 3 is put on the outside of the sound-absorbing layer 202, the sound-insulating layer 203 and the adhesive layer 204 to fix the edge to prevent the fibers from running out and falling off. After the edge is completed, the sound-absorbing layer 202 and the sound-insulating layer 203 are pasted on the inside of the sheet metal shell 2 for use. The frame 3 is made of soft glue material, which has good moisture resistance, and can prevent the corners of the sound-absorbing layer 202 and the sound-insulating layer 203 from getting damp and moldy.

[0029] Among them, a protective layer 4 is pasted on the surface of the sound-absorbing layer 202, and the protective layer 4 is made of non-woven fabric material. During the use of the sound-absorbing layer 202, the protective layer 4 is fixed to the surface of the sound-absorbing layer 202 by glue. Since the protective layer 4 is made of non-woven fabric material, it can play a good role in water repellency, dustproof and mildew-proof, and is suitable for long-term use outdoors.

[0030] Among them, limiting blocks 5 are respectively installed on both sides of the outer end of the sheet metal shell 2, and the two ends of the sound absorbing layer 202 and the sound insulating layer 203 are close to the limiting blocks 5. When the sound absorbing layer 202 and the sound insulating layer 203 are pasted and installed inside the sheet metal shell 2, the two ends of the sound absorbing layer 202 and the sound insulating layer 203 are shielded by the limiting blocks 5 to prevent the electrical components inside the air-conditioning outdoor unit 1 from causing pressure loss to the sound absorbing layer 202 and the sound insulating layer 203 when the sheet metal shell 2 is installed with the air-conditioning outdoor unit 1.

[0031] Among them, mounting blocks 6 are provided at positions near the limit blocks 5 on both sides of the outer end of the sheet metal shell 2, and mounting holes 601 are opened on the mounting blocks 6. After the sound-absorbing layer 202 and the sound-insulating layer 203 are pasted and fixed inside the sheet metal shell 2, the sheet metal shell 2 is docked and installed with the air-conditioning outdoor unit 1. At this time, the mounting block 6 is docked and fit with the air-conditioning outdoor unit 1, and the mounting hole 601 on the mounting block 6 is docked and fit with the screw hole of the air-conditioning outdoor unit 1. Then, the screw is inserted into the screw hole from the mounting hole 601, and the screw is tightened in the screw hole, so as to fix the sheet metal shell 2 and the air-conditioning outdoor unit 1 together.

[0032] Working principle:

[0033] When the sheet metal shell 2 is assembled with the air conditioner outdoor unit 1, the length and width of the sound-absorbing layer 202 and the sound-insulating layer 203 are cut according to the length and width of the sheet metal shell 2, and the sound-absorbing layer 202 and the sound-insulating layer 203 are cut by cold cutting. Then, environmentally friendly white latex adhesive is applied to the pasting surfaces of the sound-absorbing layer 202 and the sound-insulating layer 203, and the environmentally friendly white latex adhesive is evenly applied. Then, the sound-absorbing layer 202 and the sound-insulating layer 203 are aligned and pasted together. At this time, glue is applied to the inner wall of the limit groove 301. Water, put the frame 3 on the outside of the sound-absorbing layer 202, the sound-insulating layer 203 and the adhesive layer 204, and fix them with the edge to prevent the fibers from running out and causing them to fall off. After the edge wrapping is completed, the sound-absorbing layer 202 and the sound-insulating layer 203 are pasted on the inside of the sheet metal shell 2. During the use of the sound-absorbing layer 202, the protective layer 4 is glued and fixed on the surface of the sound-absorbing layer 202 by glue. Since the protective layer 4 is made of non-woven fabric material, it can play a good role in water repellency, dust and mildew resistance, and is suitable for long-term outdoor use.

[0034] After the sound-absorbing layer 202 and the sound-insulating layer 203 are pasted and fixed inside the sheet metal shell 2, the sheet metal shell 2 is then docked and installed with the air-conditioning outdoor unit 1. At this time, the mounting block 6 is docked and fitted with the air-conditioning outdoor unit 1, and the mounting hole 601 on the mounting block 6 is docked and fitted with the screw hole of the air-conditioning outdoor unit 1. Then, the screw is inserted into the screw hole from the mounting hole 601, and the screw is tightened in the screw hole, thereby fixing the sheet metal shell 2 and the air-conditioning outdoor unit 1 together.

[0035] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0036] The above is a detailed introduction to a high-damping and high-sound-absorbing coefficient air-conditioning sound insulation cotton provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A high damping and high sound absorption coefficient air conditioning sound insulation cotton, characterized in that: include: Air conditioner outdoor unit (1); A sheet metal casing (2) arranged on the outside of the air conditioner outdoor unit (1); An opening (201) formed on one side of the outer end of the sheet metal shell (2); A sound insulation component disposed inside the sheet metal shell (2) is used to suppress the damping effect of the sheet metal shell (2) and absorb reflected noise in the electrical compartment of the air conditioner outdoor unit (1), the sound insulation component comprising: a sound absorbing layer (202), a sound insulation layer (203) and an adhesive layer (204).

2. The high damping and high sound absorption coefficient air conditioner sound insulation cotton according to claim 1 is characterized in that: The inner side surface and the inner bottom of the sheet metal shell (2) are both provided with a sound absorbing layer (202), a sound insulating layer (203) is adhered to the inner side of the sound absorbing layer (202), an adhesive layer (204) is adhered to the inner side of the sound insulating layer (203), and the sound absorbing layer (202), the sound insulating layer (203) and the adhesive layer (204) are arranged in a "sandwich structure".

3. The high damping and high sound absorption coefficient air conditioner sound insulation cotton according to claim 2 is characterized in that: The interior of the sound-absorbing layer (202) is made of a sound-absorbing cotton material with a three-dimensional skeleton structure constructed of polyester fibers and polypropylene fibers, the sound insulation layer (203) is made of a sound insulation material of a high-density polyolefin resin, and the adhesive layer (204) is made of a pressure-sensitive adhesive material.

4. The high damping and high sound absorption coefficient air conditioning sound insulation cotton according to claim 2 is characterized in that: The sound absorbing layer (202), the sound insulating layer (203) and the adhesive layer (204) are provided with a frame (3) on the outside, a limiting groove (301) is provided on the inside of the frame (3), and the frame (3) is made of a soft rubber material.

5. The high damping and high sound absorption coefficient air conditioner sound insulation cotton according to claim 2 is characterized in that: A protective layer (4) is adhered to the surface of the sound absorbing layer (202), and the protective layer (4) is made of a non-woven fabric material.

6. The high damping and high sound absorption coefficient air conditioner sound insulation cotton according to claim 1, characterized in that: Limit blocks (5) are respectively installed on both sides of the outer end of the sheet metal shell (2), and both ends of the sound absorbing layer (202) and the sound insulating layer (203) are close to the limit blocks (5).

7. The high damping and high sound absorption coefficient air conditioner sound insulation cotton according to claim 6, characterized in that: Mounting blocks (6) are provided at positions close to the limiting blocks (5) on both sides of the outer ends of the sheet metal shell (2), and mounting holes (601) are provided on the mounting blocks (6).

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