Soundproof enclosure and air conditioning unit

Abstract

This utility model relates to the field of sound insulation technology, and discloses a soundproof shell and air conditioning unit, including a shell, a rubber damping layer disposed on the inner side of the shell, and a low-frequency sound-absorbing layer and a high-frequency sound-absorbing layer. By placing the low-frequency sound-absorbing layer between the rubber damping layer and the high-frequency sound-absorbing layer, this utility model allows the rubber damping layer to buffer low-frequency vibrations during air conditioning unit operation, reducing the low-frequency vibration energy transmitted to the shell and lowering low-frequency noise generation. The low-frequency sound-absorbing layer, positioned adjacent to the rubber damping layer, can promptly receive and absorb the low-frequency vibration energy buffered by the rubber damping layer, resulting in more thorough low-frequency noise reduction and improving the overall noise reduction effect of the soundproof shell. This effectively prevents the shell from vibrating and amplifying low-frequency noise. Simultaneously, the high-frequency sound-absorbing layer absorbs and blocks high-frequency noise, ensuring that noise in different frequency bands (low, medium, and high) is effectively absorbed and blocked.

Description

Technical Field

[0001] This utility model relates to the field of sound insulation device technology, and in particular to a sound insulation shell and an air conditioning unit. Background Technology

[0002] When an air conditioner is running, the vibrations of the compressor, motor, and piping generate noise at different frequencies. A layer of egg-sized sound-absorbing cotton is typically pasted onto the casing. This solution only blocks some high-frequency noise, and the lack of vibration damping in the casing amplifies the low-frequency noise generated by the unit's vibrations. To address this issue, Chinese patent application CN201510633531.9 discloses an air conditioner outdoor unit casing. By incorporating a noise-reducing layer consisting of a shock-absorbing layer, a first sound-insulating layer, and a second sound-insulating layer within the support layer of the air conditioner casing, it effectively isolates noise at different frequencies generated by the outdoor unit during operation and effectively buffers vibrations at different frequencies, thus achieving quiet operation of the outdoor unit.

[0003] However, in the aforementioned outdoor unit casing of the air conditioner, the first sound insulation layer, which is used to absorb mid- and high-frequency noise, is directly connected to the butyl rubber shock-absorbing layer, while the second sound insulation layer, which is used to absorb low-frequency noise, is far away from the butyl rubber shock-absorbing layer. It cannot effectively and timely receive and process the low-frequency vibration energy buffered by the butyl rubber, resulting in poor low-frequency noise absorption and reduced overall noise reduction effect.

[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0005] The present invention provides a soundproof housing and an air conditioning unit, which aims to solve the problem that the existing air conditioning outdoor unit housing has poor low-frequency noise absorption effect because the second soundproof layer used to absorb low-frequency noise is far away from the butyl rubber shockproof layer.

[0006] To achieve the above objectives, the solution provided by this utility model is as follows:

[0007] This utility model provides a soundproof shell, including a shell, a rubber damping layer disposed on the inner side of the shell, and a low-frequency sound-absorbing layer and a high-frequency sound-absorbing layer; the low-frequency sound-absorbing layer is bonded to the side of the rubber damping layer away from the shell, and the high-frequency sound-absorbing layer is bonded to the side of the low-frequency sound-absorbing layer away from the rubber damping layer.

[0008] Optionally, the low-frequency sound-absorbing layer is a polyester fiber sound-absorbing layer.

[0009] Optionally, the high-frequency sound-absorbing layer is an opse-absorbing layer.

[0010] Optionally, the rubber damping layer is a butyl rubber damping layer.

[0011] Optionally, the thickness of the low-frequency sound-absorbing layer is 15-25 mm.

[0012] Optionally, the thickness of the high-frequency sound-absorbing layer is 5 to 15 mm.

[0013] Optionally, the thickness of the rubber damping layer is 2 to 4 mm.

[0014] Optionally, a first adhesive layer is provided between the outer shell and the rubber damping layer, a second adhesive layer is provided between the rubber damping layer and the low-frequency sound-absorbing layer, and a third adhesive layer is provided between the high-frequency sound-absorbing layer and the low-frequency sound-absorbing layer; the thickness of the first adhesive layer, the second adhesive layer and the third adhesive layer is 0.01 to 0.02 mm.

[0015] This utility model also provides an air conditioning unit, including the aforementioned soundproof outer shell.

[0016] Beneficial effects:

[0017] This invention provides a soundproof housing. By placing a low-frequency sound-absorbing layer between a rubber damping layer and a high-frequency sound-absorbing layer, the rubber damping layer can buffer low-frequency vibrations during air conditioning unit operation, reducing the low-frequency vibration energy transmitted to the housing and lowering low-frequency noise generation. The low-frequency sound-absorbing layer, positioned adjacent to the rubber damping layer, can promptly receive and absorb the low-frequency vibration energy buffered by the rubber damping layer, resulting in more thorough low-frequency noise reduction and improving the overall noise reduction effect of the soundproof housing. This effectively prevents the housing from vibrating and amplifying low-frequency noise. Simultaneously, the high-frequency sound-absorbing layer absorbs and blocks high-frequency noise, ensuring effective absorption and blocking of noise across low, medium, and high frequency bands.

[0018] This utility model also provides an air conditioning unit, including the aforementioned soundproof outer casing. Compared to existing air conditioning units, the air conditioning unit provided by this utility model performs better in low-frequency noise control, creating a quieter and more comfortable user environment and improving the user experience. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the soundproof housing provided by this utility model.

[0020] Explanation of icon numbers:

[0021] 1-Outer shell; 2-Rubber damping layer; 3-Low-frequency sound-absorbing layer; 4-High-frequency sound-absorbing layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] It should also be noted that when a component is referred to as "fixed to" or "attached to" another component, it can be directly on the other component or may have an intervening component present. When a component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present.

[0025] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0026] See Figure 1 This utility model provides a soundproof shell 1, which can be used in the shell 1 of air conditioning units such as heat pump air conditioners, and includes a shell 1, a rubber damping layer 2, a low-frequency sound-absorbing layer 3 and a high-frequency sound-absorbing layer 4.

[0027] Specifically, the outer shell 1 is a sheet metal shell 1, which can be made of thin metal sheets through processes such as shearing, cutting, bending, welding, and splicing. The rubber damping layer 2 is bonded to the inner side of the outer shell 1, which can buffer the low-frequency vibrations generated by the outer shell 1 during the operation of the air conditioning unit. The low-frequency sound-absorbing layer 3 is bonded to the side of the rubber damping layer 2 away from the outer shell 1, and the high-frequency sound-absorbing layer 4 is bonded to the side of the low-frequency sound-absorbing layer 3 away from the rubber damping layer 2, that is, the low-frequency sound-absorbing layer 3 is located between the outer shell 1 and the high-frequency sound-absorbing layer 4.

[0028] In the soundproof housing 1 provided by this utility model, by placing the low-frequency sound-absorbing layer 3 between the rubber damping layer 2 and the high-frequency sound-absorbing layer 4, when the air conditioning unit is running, the rubber damping layer 2 can absorb and buffer low-frequency vibrations, reducing the low-frequency vibration energy transmitted to the housing 1 and reducing the generation of low-frequency noise. Meanwhile, the low-frequency sound-absorbing layer 3, positioned adjacent to the rubber damping layer 2, can promptly receive and absorb the low-frequency vibration energy buffered by the rubber damping layer 2, making the treatment of low-frequency noise more thorough and improving the overall noise reduction effect of the soundproof housing 1. This effectively prevents the housing 1 from vibrating and amplifying low-frequency noise. Simultaneously, the high-frequency sound-absorbing layer 4 is responsible for absorbing and blocking high-frequency noise, ensuring that noise in different frequency bands (low, medium, and high) can be effectively absorbed and blocked.

[0029] In an optional embodiment, the low-frequency sound-absorbing layer 3 is a polyester fiber sound-absorbing layer. The internal fiber structure of the polyester fiber sound-absorbing layer is relatively regular and uniform, which helps to absorb low-frequency noise more stably and provide more reliable noise reduction performance. In addition, polyester fiber has stable chemical properties, is environmentally friendly and safe, and does not release harmful substances during use. Moreover, polyester fiber has good wear resistance and corrosion resistance, which allows the polyester fiber sound-absorbing layer to better maintain its low-frequency noise absorption performance during long-term use, reducing the replacement and maintenance costs of the low-frequency sound-absorbing layer 3.

[0030] In an optional embodiment, the high-frequency sound-absorbing layer 4 is an octoprolol sound-absorbing layer. The octoprolol sound-absorbing layer is made of polyethylene foam, which is soft and elastic. When subjected to vibration and sound wave impact, it can deform more effectively to dissipate energy, resulting in better absorption of high-frequency noise. Simultaneously, its elasticity allows it to maintain a good fit in different installation environments, preventing high-frequency noise leakage due to installation gaps.

[0031] In an optional embodiment, the rubber damping layer 2 is a butyl rubber damping layer 2. Butyl rubber has excellent flexibility and elasticity. Under the action of low-frequency vibration, it can undergo elastic deformation with the change of vibration. When the vibration is transmitted to the butyl rubber damping layer 2, the butyl rubber buffers the impact force of the vibration through its own elastic deformation, stores the vibration energy, and then slowly releases it, thereby reducing the amplitude of the vibration.

[0032] In an optional embodiment, to ensure the effectiveness of the low-frequency sound-absorbing layer 3 in absorbing and blocking low-frequency noise, the thickness of the low-frequency sound-absorbing layer 3 is 15-25 mm. More preferably, the thickness of the low-frequency sound-absorbing layer 3 is 20 mm.

[0033] In an optional embodiment, to ensure that mid-to-high frequency noise can be effectively absorbed and blocked, the thickness of the high-frequency sound-absorbing layer 4 is 5-15 mm. More preferably, the thickness of the high-frequency sound-absorbing layer 4 is 10 mm.

[0034] In an optional embodiment, the thickness of the rubber damping layer 2 is 2 to 4 mm. The thickness of the rubber damping layer 2 within the above range can ensure that the rubber damping layer 2 effectively absorbs and buffers low-frequency vibrations, while also reducing the cost of materials.

[0035] Specifically, a first adhesive layer is provided between the outer shell 1 and the rubber damping layer 2, a second adhesive layer is provided between the rubber damping layer 2 and the low-frequency sound-absorbing layer 3, and a third adhesive layer is provided between the high-frequency sound-absorbing layer 4 and the low-frequency sound-absorbing layer 3. In an optional embodiment, to ensure a firm bond between the rubber damping layer 2 and the outer shell 1, a firm bond between the rubber damping layer 2 and the low-frequency sound-absorbing layer 3, and a firm bond between the high-frequency sound-absorbing layer 4 and the low-frequency sound-absorbing layer 3, the thickness of the first adhesive layer, the second adhesive layer, and the third adhesive layer is controlled to be between 0.01 and 0.02 mm.

[0036] This utility model also provides an air conditioning unit, which can be a heat pump air conditioner, including the aforementioned soundproof shell 1. In the soundproof shell 1, by placing a low-frequency sound-absorbing layer 3 between a rubber damping layer 2 and a high-frequency sound-absorbing layer 4, with the low-frequency sound-absorbing layer 3 adjacent to the rubber damping layer 2, it can promptly receive and absorb the low-frequency vibration energy buffered by the rubber damping layer 2, making the treatment of low-frequency noise more thorough and improving the overall noise reduction effect of the soundproof shell 1. This effectively prevents the shell 1 from vibrating and amplifying low-frequency noise. Simultaneously, the high-frequency sound-absorbing layer 4 is responsible for absorbing and blocking high-frequency noise, ensuring that noise in different frequency bands (low, medium, and high) can be effectively absorbed and blocked. Compared to existing air conditioning units, the air conditioning unit provided by this utility model performs better in low-frequency noise control, creating a quieter and more comfortable operating environment for users and improving the user experience.

[0037] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A soundproof enclosure, comprising an outer shell (1), a rubber damping layer (2) disposed inside the outer shell (1); characterized in that, It also includes a low-frequency sound-absorbing layer (3) and a high-frequency sound-absorbing layer (4); the low-frequency sound-absorbing layer (3) is bonded to the side of the rubber damping layer (2) away from the outer shell (1), and the high-frequency sound-absorbing layer (4) is bonded to the side of the low-frequency sound-absorbing layer (3) away from the rubber damping layer (2).

2. The soundproof shell according to claim 1, characterized in that, The low-frequency sound-absorbing layer (3) is a polyester fiber sound-absorbing layer.

3. The soundproof outer shell according to claim 1, characterized in that, The high-frequency sound-absorbing layer (4) is an opselo sound-absorbing layer.

4. The soundproof outer shell according to claim 1, characterized in that, The rubber damping layer (2) is a butyl rubber damping layer.

5. The soundproof housing according to claim 1, characterized in that, The thickness of the low-frequency sound-absorbing layer (3) is 15-25 mm.

6. The soundproof outer shell according to claim 1, characterized in that, The thickness of the high-frequency sound-absorbing layer (4) is 5-15 mm.

7. The soundproof outer shell according to claim 1, characterized in that, The thickness of the rubber damping layer (2) is 2-4 mm.

8. The soundproof housing according to claim 1, characterized in that, A first adhesive layer is provided between the outer shell (1) and the rubber damping layer (2), a second adhesive layer is provided between the rubber damping layer (2) and the low-frequency sound-absorbing layer (3), and a third adhesive layer is provided between the high-frequency sound-absorbing layer (4) and the low-frequency sound-absorbing layer (3); the thickness of the first adhesive layer, the second adhesive layer and the third adhesive layer is 0.01 to 0.02 mm.

9. An air conditioning unit, characterized in that, Includes the soundproof housing as described in any one of claims 1-8.

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