CN205227745U - Plate-type noise reduction structure and air conditioning device comprising same - Google Patents

Abstract

The utility model relates to a structure of making an uproar falls in board-like, including sound absorption portion and sheet metal, the sheet metal is fixed on the first face of sound absorption portion. The utility model provides a structure of making an uproar falls in board-like utilizes the sound absorbing part to absorb and fall the high band noise and make an uproar, simultaneously, utilizes sheet metal and low band noise sound wave to take place resonance and fall the noise of low band noise, has gained better noise reduction effect. Furthermore, the utility model provides a structure of making an uproar falls in board-like sets up on air conditioning equipment's shell, not direct and the part contact that produces the noise, not only is convenient for install but also saves the space in the shell, has still avoided the board-like structure of making an uproar and the mutual influence between other parts of making an uproar.

Description

A plate type noise reduction structure and an air conditioning device including the same

technical field

The utility model relates to a noise reduction device, in particular to a plate type noise reduction structure and an air conditioning device including the same.

Background technique

At present, the noise reduction of outdoor units of household air conditioners is mainly based on sound insulation cotton (one layer wraps the rigid body of the compressor, and one layer wraps the piping system).

Existing defects: According to the noise reduction experiment of sound insulation cotton and the feedback of after-sales data of household air conditioners in recent years, the following problems generally exist:

1. The noise reduction of sound insulation cotton is mainly effective for high-frequency noise reduction, and the noise reduction effect for low-frequency noise is poor, with no obvious effect;

2. Due to the condensation on the surface of the suction pipe of the external unit of the air conditioner under extremely harsh conditions, the condensed water directly acts on the sound insulation cotton. In a freezing environment, the outer surface of the sound insulation cotton will freeze. It is dried and hardened directly. The above situation has been repeated for many years, which will eventually lead to the aging or hardening of the sound insulation cotton, which greatly reduces the noise reduction effect of the sound insulation cotton;

3. Two layers of sound-proof cotton for the external machine will directly lead to insufficient space inside the piping system, resulting in difficulty in wrapping cotton;

4. The hardening or aging of the sound insulation cotton of the external machine will cause abnormal sound or loud noise of the external machine.

Utility model content

In view of this, the purpose of this utility model is to provide a plate-type noise reduction structure and an air conditioning device including it, so as to solve the technical problems in the prior art that the sound insulation cotton has poor noise reduction effect on low-frequency noise and is easy to affect other components. .

According to a first aspect of the present invention, there is provided a plate-type noise reduction structure, comprising a sound-absorbing part and a thin plate, and the thin plate is fixed on a first surface of the sound-absorbing part.

Preferably, the thickness of the sound-absorbing part is 15-25 mm.

Preferably, the thin plate has a thickness of 0.5-1 mm.

Preferably, the thin plate is provided with a plurality of fixing points, and at the fixing points, the thin plate is fixed to the first surface of the sound-absorbing part in a point-fixed manner.

Preferably, the fixing point is not provided at the edge of the thin plate.

Preferably, at the fixing point, the sheet is fixed to the first surface of the sound-absorbing part by sticking.

Preferably, the thin plate is a rectangle with an area smaller than that of the first surface of the sound absorbing part.

Preferably, the sound-absorbing part is a melamine resin open foam material with a skeleton structure.

Preferably, said sheet is a metal sheet.

According to the second aspect of the utility model, an air conditioning device is provided. The above-mentioned plate-type noise reduction structure is provided on the inner side of the housing of the air-conditioning device. The two sides are fixed to the housing of the air conditioning device.

The plate-type noise reduction structure provided by the utility model uses the sound-absorbing part to absorb and reduce the noise in the high-frequency range, and at the same time, uses the thin plate to resonate with the noise wave in the low-frequency range to reduce the noise in the low-frequency range, achieving a good noise reduction effect . Moreover, the plate-type noise reduction structure provided by the utility model is arranged on the shell of the air conditioning device, and does not directly contact with the parts that generate noise, which is convenient for installation and saves space in the shell, and avoids the gap between the plate-type noise reduction structure and other components. interaction between.

Description of drawings

Through the following description of the embodiments of the utility model with reference to the accompanying drawings, the above-mentioned and other purposes, features and advantages of the utility model will be more clear, in the accompanying drawings:

Figure 1 is a schematic diagram of a plate-type noise reduction structure;

Figure 2 is a schematic cross-sectional view of the plate-type noise reduction structure.

detailed description

Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. In the various drawings, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale.

The plate-type noise reduction structure provided by the utility model is mainly used in air-conditioning devices such as air-conditioning outdoor units to reduce noise, especially has a good noise reduction effect on low-frequency noise, and the utility model plate-type noise reduction structure can save the internal space of the equipment, And will not affect related components. The plate type noise reduction structure of the present invention will be introduced in detail below in conjunction with specific embodiments.

As shown in Figures 1 and 2, the plate-type noise reduction structure of the present invention includes a sound-absorbing part 1 and a thin plate 2, and the thin plate 2 is fixed to the sound-absorbing part 1. Preferably, the thin plate 2 is fixed to the sound-absorbing part 1 by pasting. On the sound-absorbing part 1. The sound-absorbing part 1 is a material with a suction function. Preferably, the sound-absorbing part 1 is a melamine resin open foam material with a skeleton structure, which has a certain degree of elasticity, and contains small holes inside, which can absorb sound waves and pass sound waves It propagates and consumes the energy of sound waves in its interior, so as to achieve the purpose of noise reduction. The thin plate 2 is a metal plate, preferably a stainless steel plate.

The sound-absorbing part 1 is plate-shaped, preferably, the thickness of the sound-absorbing part 1 is 15-25 mm; the thickness of the thin plate 2 is 0.5-1 mm, and the thin plate 2 is attached to the first surface of the sound-absorbing part 1 is fixed on the first surface of the sound-absorbing part 1, preferably, the thin plate 2 is provided with a plurality of fixed points 3, and the fixed point 3 is not provided at the edge of the thin plate 2, and on the The thin plate 2 at the fixed point 3 is fixed on the first surface of the sound-absorbing part 1 in a point-fixed manner, so as to ensure that the holes on the sound-absorbing part 1 will not be completely blocked and avoid damage to the sound-absorbing part. 1’s sound-absorbing performance, furthermore, at the fixing point 3, the thin plate 2 is fixed to the first surface of the sound-absorbing part 1 by pasting. Preferably, the area of the thin plate 2 is smaller than that of the rectangular stainless steel plate of the first surface of the sound-absorbing part 1, so as to ensure that the sound-absorbing part 1 can absorb sound waves, and the rectangular stainless steel plate has abundant sound waves when the edges are completely free. The simple harmonic vibration frequency can be as low as a few hertz. When the low-frequency noise sound wave is consistent with the simple harmonic vibration frequency of the thin plate 2, resonance occurs, which can absorb low-frequency sound waves well. Further, because the thin plate 2 is fixed on a On the sound-absorbing part 1 with certain elasticity, the energy resonating with the sound wave is consumed by damping.

The plate-type noise reduction structure of the utility model mainly reduces noise in the high-frequency range through the sound-absorbing part 1 , and resonates with the noise in the low-frequency range through the thin plate 2 , thereby reducing noise in the low-frequency range.

The plate type noise reduction structure of the utility model is set in the outdoor unit of the air conditioner:

The plate-type noise reduction structure mainly reduces the noise generated by the compressor in the outdoor unit of the air conditioner. The second surface of the sound absorbing part 1 opposite to the first surface provided with the thin plate 2 is fixed inside the casing of the outdoor unit, and the thin plate 2 is close to the compressor and other components inside the outdoor unit. In order to obtain the best noise reduction effect, the arrangement area of the plate-type noise reduction structure in the casing of the outdoor unit should be increased as much as possible. The high-frequency sound waves of the noise emitted by the compressor are absorbed by the sound-absorbing part 1, reflected and propagated inside it, and the energy of the sound waves is consumed during the propagation process; at the same time, what cannot be consumed in the sound-absorbing part 1 The low-frequency sound wave resonates with the thin plate 2, and its energy is consumed, thereby achieving the purpose of noise reduction.

The plate type noise reduction structure provided by the utility model is arranged on the shell of the outdoor unit of the air conditioner, and does not directly contact with the compressor that generates noise, which is convenient for installation and can save the space inside the shell. At the same time, since the plate-type noise reduction structure is not in direct contact with the compressor and its connecting pipeline, it is possible to prevent the compressor or pipeline from colliding with the plate-type noise reduction structure to produce abnormal noise, and it is also possible to avoid The problem that the temperature of the three-phase line rises and the sound-absorbing part 1 is ignited is caused by the reverse connection of the three-phase line. Moreover, the condensation generated on the pipeline surface of the outdoor unit will not be absorbed by the plate type noise reduction structure, and will not form ice on the plate type noise reduction structure, so it will not affect the plate type noise reduction structure .

It should be noted that in this article, relational terms such as first and second etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them.

Finally, it should be noted that obviously, the above-mentioned embodiments are only examples for clearly illustrating the utility model, rather than limiting the implementation manner. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the protection scope of the present utility model.

Claims (10)

1. a board-like denoising structure, is characterized in that, comprises sound-absorbing part and thin plate, and described thin plate is fixed on the first surface of described sound-absorbing part.

2. board-like denoising structure according to claim 1, is characterized in that, described sound-absorbing part thickness is 15 ~ 25mm.

3. board-like denoising structure according to claim 1, is characterized in that, described lamella thickness is 0.5 ~ 1mm.

4. board-like denoising structure according to claim 1, is characterized in that, described thin plate is provided with multiple fixing point, is fixed on the first surface of described sound-absorbing part to put fixing mode at thin plate described in described fixed point.

5. board-like denoising structure according to claim 4, is characterized in that, the edge of described thin plate does not arrange described fixing point.

6. board-like denoising structure according to claim 5, is characterized in that, is fixed on the first surface of described sound-absorbing part in the mode of thin plate described in described fixed point by sticky note.

7. board-like denoising structure according to claim 6, is characterized in that, described thin plate is the rectangle that area is less than the area of the first surface of described sound-absorbing part.

8. the board-like denoising structure according to any one of claim 1-7, is characterized in that, described sound-absorbing part is the opening foamed material of skeleton structure melmac.

9. the board-like denoising structure according to any one of claim 1-7, is characterized in that, described thin plate is metallic plate.

10. a conditioner, it is characterized in that, be provided with the board-like denoising structure according to any one of claim 1-9 inside the shell of described conditioner, described board-like denoising structure is fixed on the shell of described conditioner by the second face that described sound-absorbing part is relative with first surface.