CN118274445A - Sound insulation device and air conditioner - Google Patents

Abstract

The application discloses a sound insulation device and an air conditioner, belongs to the technical field of household appliances, and aims to solve the technical problem that the overall sound insulation effect of the existing sound insulation scheme is limited. The sound insulation device provided by the embodiment of the application comprises a main shell and an additional shell, wherein the main shell is used for being connected with a noise source, and the additional shell and the main shell are arranged at intervals to form a sound insulation cavity; the sound insulation cavity is internally provided with a rough surface, when vibration/noise of a noise source is transmitted to the main shell, the main shell generates forced vibration so as to push an air layer in the sound insulation cavity to move, the air layer is limited by space and can only move along tangential direction, the air is pumped to move under the excitation of the main shell, and part of vibration energy can be consumed due to the viscosity of the air, so that the vibration of the main shell can be restrained, and the rough surface breaks through a smoothly distributed boundary layer to cause small vortex motion of the air, so that the dissipation of air energy is increased, and the vibration of the main shell and the noise transmission of the main shell are greatly restrained, and the sound insulation effect is enhanced.

Description

Sound insulation device and air conditioner

Technical Field

The application belongs to the technical field of household appliances, and particularly relates to a sound insulation device and an air conditioner.

Background

From a physiological point of view, any sound that interferes with people's rest, learning and work and with the sound that people want to hear, i.e. unwanted sounds, are collectively referred to as noise, and noise pollution is formed when noise adversely affects people and the surrounding environment. In real life, noise is ubiquitous, especially working noise of machinery, electric appliances and other devices, so that sound insulation measures are required for the noise sources to reduce noise pollution.

In the related art, for noise sources, the vibration noise of the noise sources is generally reduced through the design of thickening a shell, local reinforcement and the like. However, the method is limited by cost and process, the shell cannot be thickened too much, for example, the common shell thickening scheme is to increase from 3mm to 4mm, and the local reinforcement and other rigidity-changing modes can only aim at specific frequency bands, so that the overall sound insulation effect of the two schemes is limited.

Disclosure of Invention

The application aims to solve the technical problem that the sound insulation effect of the sound insulation scheme in the related art is limited at least to a certain extent. To this end, the application provides a sound insulation device and an air conditioner.

In a first aspect, an embodiment of the present application provides a sound insulation device, which is characterized in that,

A main housing for connection to a noise source;

The additional shell is arranged at intervals with the main shell to form a sound insulation cavity;

wherein, the sound insulation cavity is internally provided with a rough surface so as to restrain the transmission of sound.

In the sound insulation device provided by the embodiment of the application, since the additional shell is added on the main shell and the sound insulation cavity is formed between the additional shell and the main shell at intervals, when vibration/noise of a noise source is transmitted to the main shell, the main shell generates forced vibration to push an air layer in the sound insulation cavity to move, and the air layer can only move along tangential direction due to space limitation, so that the air is pumped to move under the excitation of the main shell, and part of vibration energy is consumed due to the viscosity of the air, so that the vibration of the main shell can be restrained, and the rough surface is arranged in the sound insulation cavity to break a smoothly distributed boundary layer to cause small vortex motion of the air, so that the dissipation of air energy is increased, the vibration of the main shell and the noise transmission of the main shell are greatly restrained, and the sound insulation effect is enhanced.

In some embodiments, the roughened surface is provided on at least one of an inner wall of the main housing and an inner wall of the additional housing.

In some embodiments, the sound insulation device further comprises a roughened inner layer, the roughened surface being disposed on the roughened inner layer.

In some embodiments, the roughened inner layer is disposed on at least one of an inner wall of the main housing and an inner wall of the additional housing.

In some embodiments, the rough surface is a plurality of rough surfaces, and a plurality of rough surfaces are arranged in the sound insulation cavity at intervals.

In some embodiments, the roughness of a plurality of said roughened surfaces is the same.

In some embodiments, at least two of the roughened surfaces have different roughness.

In some embodiments, the roughened surface has at least two points with different roughness.

In some embodiments, the roughness of the positions corresponding to the two roughened surfaces is the same under the condition that the roughened surfaces are provided on both the inner wall of the main casing and the inner wall of the additional casing.

In some embodiments, the additional housing is sleeved on the main housing.

In some embodiments, the roughened surface has a height of 0 to 0.5mm.

In a second aspect, based on the above sound insulation device, an embodiment of the present application further provides an air conditioner, including a compressor, where the main housing is connected to the compressor.

The beneficial effects of the air conditioner provided in the second aspect are the same as those of the sound insulation device provided in the first aspect, and are not described here again.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic structural view of a soundproof device;

FIG. 2 shows a second schematic structural view of the sound-damping device;

Fig. 3 shows a schematic structural view of a soundproof device;

Fig. 4 shows a structural schematic diagram of the soundproof device;

fig. 5 shows a schematic view of the structure of the soundproof device.

Reference numerals:

100-sound insulation device, 110-main housing, 120-additional housing, 130-sound insulation cavity, 140-rough surface, 141-rough inner layer.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all the directional indicators in the embodiments of the present invention are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

Referring to fig. 1, an embodiment of the present application provides a sound insulation device 100 and an air conditioner, where the air conditioner includes the sound insulation device 100, and the air conditioner forms a refrigerant circulation system by using a compressor, an indoor heat exchanger, an outdoor heat exchanger, a throttling device, and the like, and performs functions of refrigeration, heating, dehumidification, and the like by using circulation of a refrigerant, so as to realize adjustment of indoor air, and provide a comfortable environment for indoor people. The compressor functions as a compression driving refrigerant in an air conditioning refrigerant circuit, and in operation, the compressor radiates noise outwardly through the shell vibration, and the sound insulation device 100 serves to insulate and reduce noise of the compressor.

In the related art, the vibration noise of the shell is generally reduced through the design of thickening the shell, local reinforcement and the like. However, the cost and the process are limited, the shell cannot be thickened too much, for example, the common thickening is increased from 3mm to 4mm, and the local reinforcement and other rigidity-changing modes can only aim at specific frequency bands, so that the overall sound insulation effect of the two schemes is limited.

In order to solve the problems in the related art, in the sound insulation device 100 according to the embodiment of the present application, an additional housing 120 is added to the main housing 110 to form a sound insulation cavity 130 with the main housing 110, so that when vibration/noise of a noise source is transmitted to the main housing 110, the main housing 110 generates forced vibration to push an air layer in the sound insulation cavity 130 to move, and is limited by space, the air layer can only move tangentially, so that the air is pumped under the excitation of the main housing 110, and a part of vibration energy is consumed due to the viscosity of the air, thereby inhibiting the vibration of the main housing 110, and since the sound insulation cavity 130 has a rough surface 140, the rough surface 140 breaks a smoothly distributed boundary layer to cause small vortex motion, and increases the dissipation of the air energy, so that the vibration of the main housing 110 and the noise transmission thereof are greatly inhibited, and the sound insulation effect is enhanced.

The application is described below with reference to specific embodiments in conjunction with the accompanying drawings:

Referring to fig. 1, an embodiment of the present application discloses a sound insulation device 100 for vibration and noise reduction of a noise source, the sound insulation device 100 including a main housing 110 and an additional housing 120. The main housing 110 is used for connecting with a noise source, and the additional housing 120 is spaced from the main housing 110, so that a sound insulation cavity 130 is formed between the additional housing 120 and the main housing 110, and when the noise source generates vibration and noise, the vibration and noise are transmitted to the main housing 110, and then transmitted to the outside from the additional housing 120 through the sound insulation cavity 130.

The sound insulation cavity 130 is provided with a thin air layer, when vibration and noise generated by a noise source are transmitted to the main shell 110, the main shell 110 generates forced vibration, so that the air layer in the sound insulation cavity 130 is pushed to move, the arrow direction in fig. 1 is the moving direction of the air layer, and the air layer is limited by the space in the sound insulation cavity 130 and can only move along tangential direction, so that air is pumped under the excitation of the main shell 110, and the curve in fig. 1 shows the speed distribution of the air moving surface. The pumping movement of the air causes viscous dissipation, and the viscosity of the air consumes a part of vibration energy under the effect of viscous damping, so that the vibration of the main housing 110 can be suppressed to some extent.

Wherein, the sound insulation cavity 130 is provided with a rough surface 140, and when the sound insulation cavity 130 moves, the air can cause small vortex motion of the air under the interference of the rough surface 140, so that the dissipation of air energy is increased, the transmission of vibration and noise of the main shell 110 is greatly inhibited, the transmission of vibration and noise between the main shell 110 and the additional shell 120 is reduced, and the sound insulation effect is enhanced.

According to the sound insulation device 100 disclosed by the embodiment of the application, the additional shell 120 is added outside the main shell 110, so that the main shell 110 and the additional shell 120 form the sound insulation cavity 130, a thin air layer is sealed in the sound insulation cavity 130, the rough surface 140 is arranged, the air pumping dissipation characteristic is constructed, namely, viscous dissipation is caused by utilizing the pumping effect of air in the sound insulation cavity 130, and therefore, the transmission of noise between the main shell 110 and the additional shell 120 is reduced, and broadband noise reduction is realized.

It is conceivable that the opposite sides of the main housing 110 and the additional housing 120 to each other constitute the cavity wall of the soundproof cavity 130, and that the sides of the main housing 110 and the additional housing 120 facing the soundproof cavity 130 are defined as inner sides, so that the rough surface 140 may be provided in the soundproof cavity 130 by being provided on the inner wall of the main housing 110 or the additional housing 120. Specifically, the rough surface 140 is provided on at least one of the inner wall of the main housing 110 and the inner wall of the additional housing 120, and the rough surface 140 may be provided only on the inner wall of the main housing 110 or the inner wall of the additional housing 120, or the rough surface 140 may be provided on both the inner wall of the main housing 110 and the inner wall of the additional housing 120.

As shown in fig. 1 and 2, when the rough surface 140 is provided only on the inner wall of the main housing 110 or the inner wall of the additional housing 120, vibration and noise generated from the noise source are transferred to the main housing 110, and after air moves in a tangential direction, small vortex motion is induced at one side of the soundproof cavity 130, thereby increasing dissipation of air energy, and greatly suppressing vibration of the main housing 110 and noise transfer thereof; as shown in fig. 3, when the rough surfaces 140 are provided on both the inner wall of the main housing 110 and the inner wall of the additional housing 120, both sides of the soundproof cavity 130 cause small vortex motion, so that dissipation of air energy can be further increased, and the suppression effect of vibration of the main housing 110 and noise transmission thereof can be improved. And in order to make the air in the sound insulation cavity 130 form small vortex motion, and increase the dissipation of air energy, the length of the rough surface 140 needs to cover the length of the inner wall of the main housing 110 and/or the inner wall of the additional housing 120, so that the air can form small vortex motion in the length direction of the inner wall of the main housing 110 and/or the inner wall of the additional housing 120.

As shown in fig. 3, in the case where the rough surfaces 140 are provided on both the inner wall of the main housing 110 and the inner wall of the additional housing 120, the roughness of the positions corresponding to the two rough surfaces 140 may be the same or different, which is not limited in this embodiment.

Referring to fig. 1, in some embodiments, the acoustic baffle device 100 further includes a roughened inner layer 141, with the roughened surface 140 disposed on the roughened inner layer 141 such that the roughened surface 140 has support. Specifically, a specific shape or surface roughness may be cast or etched on the inner wall of the main housing 110 and/or the additional housing 120, thereby forming the rough inner layer 141, and the surface of the rough inner layer 141 naturally forms the rough surface 140.

By casting or etching a particular shape or surface roughness into the inner walls of the main housing 110 and or the additional housing 120 to form the roughened surface 140, the roughened surface 140 adds negligible mass, size, and cost. The acoustic baffle device 100 of the present embodiment has a cost advantage over the prior art in which the shell is thickened or reinforced, and the added mass and size are smaller.

In some embodiments, the main housing 110 and the additional housing 120 may be disposed in parallel or may be disposed at an angle, which is not limited in this embodiment.

The rough surface 140 is a continuous structure, and the heights of the rough surface 140 are different from each other, so that the rough surface 140 can form an uneven rough state, specifically, the height of the rough surface 140 can be 0-0.5 mm, that is, the heights of the rough surface 140 are all in the range of 0-0.5 mm, and in the range, small vortex motion can be formed at the rough surface 140 without affecting the pumping motion of an air layer.

Accordingly, the rough inner layer 141 is also disposed on at least one of the inner wall of the main housing 110 and the inner wall of the additional housing 120, i.e., the rough inner layer 141 may be disposed only on the inner wall of the main housing 110 or the inner wall of the additional housing 120, or the rough inner layer 141 may be disposed on both the inner wall of the main housing 110 and the inner wall of the additional housing 120, and the rough inner layer 141 may be provided with the rough surface 140.

In order to better induce the small vortex motion of the air, the roughness of the rough surface 140 may be in a non-uniform arrangement scheme, that is, the roughness of the sound insulation cavity 130 is different from place to place, and when the non-uniformity of the roughness of the sound insulation cavity 130 is higher, the small vortex motion of the air is stronger, so that the dissipation of the air energy is greater, and the suppression effect of the vibration of the main housing 110 and the noise transmission thereof is also better. As shown in fig. 4 and 5, the plurality of rough surfaces 140 may be disposed in the sound insulation cavity 130 at intervals, so that the rough surfaces 140 and the smooth surfaces in the sound insulation cavity 130 are staggered, and the roughness in the sound insulation cavity 130 is unevenly disposed.

Specifically, a plurality of roughened surfaces 140 are provided at intervals on the inner wall of the main housing 110 and/or the inner wall of the additional housing 120 so that the roughness of the inner wall of the main housing 110 and/or the inner wall of the additional housing 120 is different from each other, thereby making the roughness of the sound insulation chamber 130 different from each other. Of course, the plurality of rough surfaces 140 disposed at intervals need to entirely cover the length of the inner wall of the main housing 110 and/or the inner wall of the additional housing 120, and the plurality of rough surfaces 140 may be disposed side by side along the length direction of the inner wall of the main housing 110 and/or the inner wall of the additional housing 120, or may be disposed alternately, which is not limited in this embodiment.

The plurality of rough surfaces 140 may be disposed at unequal intervals, that is, the distances between adjacent rough surfaces 140 are not uniform, so that the length of each smooth surface is not uniform while the rough surfaces 140 and the smooth surfaces in the soundproof cavity 130 are staggered, and the non-uniformity of the roughness in the soundproof cavity 130 may be further improved.

Of course, the plurality of rough surfaces 140 may be equally spaced, which is not limited in this embodiment.

The roughness of the plurality of roughened surfaces 140 may be the same or different. As shown in fig. 4, when the roughness of the plurality of rough surfaces 140 is the same, the roughness in the soundproof cavity 130 may be unevenly disposed because the plurality of rough surfaces 140 are spaced, i.e., the rough surfaces 140 and the smooth surfaces in the soundproof cavity 130 are staggered; as shown in fig. 5, when the roughness of the plurality of rough surfaces 140 is different, at least two of the rough surfaces 140 have different roughness, more rough surfaces 140 having different roughness may be provided, so that the roughness between at least two of the rough surfaces 140 is different in addition to the roughness between the rough surfaces 140 and the smooth surface, thereby further improving the non-uniformity of the roughness in the soundproof cavity 130.

In another embodiment, in conjunction with fig. 1, different roughness may be provided in different areas on one roughened surface 140 to achieve non-uniform placement of roughness within the acoustic enclosure 130. Specifically, the roughness of at least two portions of the rough surface 140 is different, and of course, the more regions of the rough surface 140 having different roughness, the higher the non-uniformity.

Specifically, a rough surface 140 may be provided on the inner wall of the main housing 110 and/or the inner wall of the additional housing 120, and the rough surface 140 may have different roughness at least at two places, thereby achieving non-uniform arrangement of roughness in the soundproof cavity 130.

Of course, a plurality of rough surfaces 140 may be disposed on the inner wall of the main housing 110 and/or the inner wall of the additional housing 120 at intervals, and each rough surface 140 has at least two roughness different from each other, which is not limited in this embodiment.

In some embodiments, the additional housing 120 may be sleeved on the main housing 110 to connect with the main housing 110, and of course, the additional housing 120 may also be fixed on the main housing 110 by welding, bonding, or the like, which is not limited in this embodiment.

In the sound insulation device 100 according to the embodiment of the present application, since the additional housing 120 is added to the main housing 110 and the sound insulation cavity 130 is formed between the additional housing 120 and the main housing 110 at intervals, when the vibration/noise of the noise source is transmitted to the main housing 110, the main housing 110 generates forced vibration to push the air layer in the sound insulation cavity 130 to move, and the air layer can only move tangentially under the limitation of space, so that the air is pumped under the excitation of the main housing 110, and the vibration of the main housing 110 can be suppressed due to the fact that a part of vibration energy is consumed by the viscosity of the air, and the rough surface 140 is provided in the sound insulation cavity 130, the rough surface 140 breaks the boundary layer which is smoothly distributed, so that the small vortex motion of the air is caused, the dissipation of the air energy is increased, and the vibration of the main housing 110 and the noise transmission thereof are greatly suppressed, so that the sound insulation effect is enhanced.

Based on the same inventive concept, the embodiment of the present application further provides an air conditioner, including a compressor and the above-mentioned sound insulation device 100, wherein the compressor plays a role of compressing driving refrigerant in a refrigerant circuit of the air conditioner, and when in operation, the compressor radiates noise outwards through vibration of a shell, that is, the compressor can be the above noise source, and the sound insulation device 100 is used for performing sound insulation and noise reduction on the compressor.

Specifically, the compressor is connected to the main housing 110 such that vibration/noise generated from the compressor can be transmitted to the main housing 110, and thus the soundproof device 100 can insulate and reduce noise of the compressor. The foregoing has described the beneficial effects of the sound insulation device 100 provided by the embodiment of the present application, and will not be described herein.

In some embodiments, the main housing 110 may be fixedly attached to the compressor by welding, bonding, or the like, which is not limited in this example.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

Claims (12)

1. A sound insulation device, comprising:

A main housing (110) for connection to a noise source;

an additional housing (120) spaced apart from the main housing (110) to form a sound-deadening chamber (130);

Wherein the sound-proof cavity (130) has a roughened surface (140) therein to inhibit transmission of sound.

2. The sound insulation device according to claim 1, characterized in that the roughened surface (140) is provided on at least one of the inner wall of the main housing (110) and the inner wall of the additional housing (120).

3. The sound insulation device according to claim 1, characterized in that the sound insulation device (100) further comprises a roughened inner layer (141), the roughened surface (140) being provided on the roughened inner layer (141).

4. A sound insulation device according to claim 3, characterized in that the roughened inner layer (141) is provided on at least one of the inner wall of the main housing (110) and the inner wall of the additional housing (120).

5. The sound insulation device according to claim 1, characterized in that the roughened surface (140) is a plurality, and a plurality of the roughened surfaces (140) are arranged in the sound insulation chamber (130) at intervals.

6. Sound insulation device according to claim 5, characterized in that the roughness of a plurality of said roughened surfaces (140) is the same.

7. Sound insulation device according to claim 5, characterized in that at least two of said roughened surfaces (140) of said plurality of roughened surfaces (140) have a different roughness.

8. Sound insulation device according to claim 1, characterized in that the roughened surface (140) has at least two points with different roughness.

9. Sound insulation device according to claim 1, characterized in that the roughness of the positions corresponding to two roughened surfaces (140) is the same, provided that the roughened surfaces (140) are provided on both the inner wall of the main housing (110) and the inner wall of the additional housing (120).

10. Sound insulation device according to any one of claims 1-9, characterized in that the additional housing (120) is arranged over the main housing (110).

11. Sound insulation device according to any one of claims 1-9, characterized in that the height of the roughened surface (140) is 0-0.5 mm.

12. An air conditioner characterized by comprising a compressor and a sound insulation device (100) according to any one of claims 1-11, said main housing (110) being connected to said compressor.