CN215983186U - Noise reduction device and air conditioner - Google Patents

Abstract

The application provides a device and air conditioner of making an uproar falls includes: the silencing device comprises a silencing frame and a perforated plate arranged on the silencing frame, wherein the perforated plate and the silencing frame jointly enclose to form a silencing cavity, and a through hole is formed in the perforated plate; the sound absorption layer is attached to the perforated plate, and the sound absorption layer fills part of the sound attenuation cavity. The part of the sound attenuation cavity, which does not contain the sound absorption layer, is an air cavity. When the compressor runs, noise generated by the compressor firstly enters the silencing cavity through the through hole on the perforated plate; then, noise is subjected to primary noise reduction through the sound absorption layer; and finally, noise enters the air cavity and is reflected for multiple times in the air cavity, the noise is subjected to air molecule friction and viscous resistance in the air layer, the noise can also be subjected to friction with the side wall of the silencing frame to reduce the noise, and part of the noise can also be reflected to the sound absorption layer to further reduce the noise. Therefore, the low and medium frequency noise of the compressor can be well reduced.

Description

Noise reduction device and air conditioner

Technical Field

The application relates to the technical field of air conditioning, in particular to a noise reduction device and an air conditioner.

Background

An air conditioner, which is one of the most widely used home appliances, generally includes an outdoor unit and an outdoor unit, which are connected to each other.

The compressor in the outdoor unit is an essential component of the refrigerating system of the air conditioner, but the compressor can generate large noise in the operation process.

The user attaches components such as sound absorption cotton on the off-premises station usually to reduce the noise, but prior art still can not reduce well low frequency noise, and user experience is relatively poor.

SUMMERY OF THE UTILITY MODEL

The application provides a device and air conditioner of making an uproar falls to solve the technical problem that the device of making an uproar of indoor set can't effectively reduce the low frequency noise among the prior art.

In one aspect, the present application provides a noise reduction apparatus comprising:

the silencing device comprises a silencing frame and a perforated plate arranged on the silencing frame, wherein the perforated plate and the silencing frame jointly enclose to form a silencing cavity, and a through hole is formed in the perforated plate;

the sound absorption layer is attached to the perforated plate, and the sound absorption layer fills part of the sound attenuation cavity.

In one possible implementation manner of the present application, the sound absorbing layer surface is provided with a plurality of protrusions.

In one possible implementation manner of the present application, the sound absorbing layer is further attached to the side wall of the sound attenuation frame.

In a possible implementation manner of the present application, the sound absorbing layer is located at a distance K from the side wall of the sound absorbing layer opposite to the sound attenuation frame, where K satisfies: k is more than or equal to 30mm and less than or equal to 230 mm.

In one possible implementation manner of the present application, a baffle is disposed in the sound attenuation frame.

In a possible implementation manner of the present application, the baffle plate is further provided with a plurality of noise reduction holes.

In this application a possible implementation, the interval is equipped with a plurality ofly on the perforated plate the through-hole, the perforation rate of perforated plate is P, and wherein, P satisfies: p is more than or equal to 1 percent and less than or equal to 10 percent.

In one possible implementation manner of the present application, the through hole is circular in shape.

In one possible implementation manner of the present application, the thickness of the perforated plate is H, the aperture of the through hole is R, wherein H and R satisfy: r is more than or equal to 0.8H and less than or equal to 1.2H.

In another aspect, the present application further provides an air conditioner, the air conditioner includes an indoor unit and an outdoor unit that are communicated with each other, and the noise reduction device as described above, and the noise reduction device is installed in the outdoor unit.

The application provides a device and air conditioner of making an uproar falls includes: the silencing device comprises a silencing frame and a perforated plate arranged on the silencing frame, wherein the perforated plate and the silencing frame jointly enclose to form a silencing cavity, and a through hole is formed in the perforated plate; the sound absorption layer is attached to the perforated plate, and the sound absorption layer fills part of the sound attenuation cavity. The part of the sound attenuation cavity, which does not contain the sound absorption layer, is an air cavity. When the compressor runs, noise generated by the compressor firstly enters the silencing cavity through the through hole on the perforated plate; then, noise is subjected to primary noise reduction through the sound absorption layer; and finally, noise enters the air cavity and is reflected for multiple times in the air cavity, the noise is subjected to air molecule friction and viscous resistance in the air layer, the noise can also be subjected to friction with the side wall of the silencing frame to reduce the noise, and part of the noise can also be reflected to the sound absorption layer to further reduce the noise. Therefore, the low and medium frequency noise of the compressor can be well reduced.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is an exploded schematic view of a noise reduction device provided in an embodiment of the present application;

FIG. 2 is a cross-sectional view taken at B of FIG. 1;

FIG. 3 is an enlarged schematic view at E in FIG. 2;

fig. 4 is a schematic structural diagram of an outdoor unit according to an embodiment of the present application

Reference numerals:

the noise reduction device comprises a noise reduction device 100, a noise elimination frame 110, a bottom plate 111, a side wall 112, a baffle 113, noise reduction holes 114, a perforated plate 120, through holes 121, a sound absorption layer 130, protrusions 131, grooves 132, a noise elimination cavity 200, an air cavity 300, an outdoor unit 400 and a compressor 410.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, fig. 2 and fig. 4, an embodiment of the present application provides a noise reduction apparatus 100, including: the silencing device comprises a silencing frame 110 and a perforated plate 120 arranged on the silencing frame 110, wherein the perforated plate 120 and the silencing frame 110 jointly enclose to form a silencing cavity 200, and a through hole 121 is formed in the perforated plate 120; the sound absorption layer 130 is attached to the perforated plate 120, and the sound absorption layer 130 fills part of the sound-absorbing cavity 200.

It should be noted that the compressor 410 is an essential component of the refrigeration system, and the compressor 410 generates a loud noise during operation. It is common for users to lay acoustic wool or the like around the compressor 410 to reduce noise levels. Noise is generally classified into high frequency noise, medium frequency noise, and low frequency noise. Wherein, low frequency noise and intermediate frequency noise still can penetrate components such as soundproof cotton and radiate outward because the wavelength is longer, and the human body is more sensitive to low frequency noise and intermediate frequency noise, can cause chronic damage to the health easily.

It should be noted that, in the embodiment of the present application, the sound absorbing layer 130 fills part of the sound absorbing cavity 200. The remaining cavity of the sound-deadening chamber 200 is the air chamber 300 except for a portion for accommodating the sound-absorbing layer 130.

When the compressor 410 is operated, the noise generated from the compressor 410 firstly enters into the sound-deadening chamber 200 through the through-hole 121 of the perforated plate 120; then, the noise is primarily reduced through the sound absorption layer 130; finally, noise enters the air cavity 300 and is reflected in the air cavity 300 for multiple times, the noise is subjected to air molecule friction and viscous resistance in the air cavity 300, the noise can also be rubbed with the side wall 112 of the silencing frame 110 to reduce the noise, and part of the noise can also be reflected to the sound absorption layer 130 to further reduce the noise. Thus, the low and medium frequency noise of the compressor 410 can be reduced well.

Preferably, the sound absorption layer 130 is made of glass fiber cotton.

The sound absorbing layer 130 made of the glass fiber wool has a porous surface and many internal gaps; when noise passes through the sound absorbing layer 130, the fine glass fiber wool mechanically vibrates, thereby converting sound energy into heat energy.

Thus, the glass fiber wool can better absorb the energy of noise to reduce the noise level.

Further, in other embodiments, the material of the sound absorption layer 130 may also be sponge, or cardboard, etc., which is not limited herein.

Specifically, the shape of the noise elimination frame 110 is a cuboid, and the noise elimination frame 110 is enclosed by a bottom plate 111 and four side walls 112; the perforated plate 120 is a rectangular plate. Wherein the thickness of the bottom plate 111 and the side wall 112 ranges from 0.5mm to 1 mm.

The noise reduction device 100 is set to be rectangular, so that the installation flexibility of the noise reduction device 100 can be improved; the noise reduction device 100 has a simple structure, and the manufacturing efficiency of the noise reduction device 100 can be improved.

Further, in other embodiments, the noise reducer 100 may also be cylindrical, spherical, etc., and is not limited herein.

In some embodiments, the sound absorption layer 130 is provided with a plurality of protrusions 131 on the surface.

The surface of the sound absorption layer 130 is hump-shaped, so that the surface area of the sound absorption layer 130 can be increased, and the noise reduction effect of the sound absorption layer 130 is improved.

Further, in other embodiments, the surface of the sound absorbing layer 130 may be further provided with a plurality of grooves 132, etc. to further increase the surface area of the sound absorbing layer 130, which is not limited herein.

In some embodiments, the sound absorbing layer 130 is also attached to the side wall 112 of the sound-deadening frame 110.

By arranging the sound absorbing layer 130 on the side wall 112 of the sound attenuation frame 110, the contact area between the sound absorbing layer 130 and noise can be further increased on the basis of keeping a certain air cavity 300, and the noise reduction effect of the noise reduction device 100 can be improved.

Further, in other embodiments, one sound absorption layer 130 is further disposed in the sound attenuation chamber 200, and the sound absorption layer 130 can divide the air chamber 300 into two parts, so as to improve the noise reduction effect of the noise reduction device 100. And are not intended to be unduly limited herein.

In some embodiments, the sound absorbing layer 130 is located at a distance K from the side wall 112 of the sound-deadening frame 110 disposed opposite to the sound absorbing layer 130, where K satisfies: k is more than or equal to 30mm and less than or equal to 230 mm.

When the sound attenuation frame 110 has a rectangular parallelepiped shape, the side wall 112 disposed opposite to the sound absorption layer 130 is the bottom plate 111.

By setting the thickness of the air cavity 300 to be 30mm to 230mm, the number of times of reflecting noise in the noise reducer 100 can be increased, and the noise reduction effect of the noise reducer 100 can be improved.

Preferably, the thickness of the sound absorption layer 130 ranges from 10mm to 50 mm; accordingly, the depth of the sound attenuation frame 110 ranges from 40mm to 280 mm.

Further, in other embodiments, the thickness of the sound absorption layer 130 and the depth of the sound attenuation frame 110 may be selected from other ranges, which are not limited herein.

In some embodiments, a baffle 113 is provided within the sound attenuation frame 110.

By providing the baffle 113 to divide the sound-deadening chamber 200 into two, the noise can be reflected and rubbed on more surfaces after entering the noise reducer 100; the energy of the noise can be further consumed, thereby improving the noise reduction effect of the noise reduction apparatus 100.

Specifically, when the sound attenuation frame 110 is rectangular, the baffle 113 is linear in projection on the plane where the bottom plate 111 is located; that is, the baffle 113 is disposed perpendicular to the bottom plate 111. Thus, the noise elimination frame 110 has a simple structure, and the installation efficiency of the noise reduction device 100 can be improved.

Further, in other embodiments, the baffle 113 may be disposed obliquely with respect to the bottom plate 111; the angle between the baffle 113 and the bottom plate 111 may be 30 °, 45 °, 60 °, etc., and is not limited herein.

Specifically, when the sound attenuation frame 110 is rectangular, the baffle 113 is disposed perpendicular to any one of the side walls 112 of the sound attenuation frame 110; that is, the baffle 113 divides the sound-deadening chamber 200 into two rectangular parallelepiped chambers, which is simple in structure and facilitates the production of the noise reduction device 100.

Further, in other embodiments, the baffle 113 may be disposed on a diagonal line of the sound attenuation frame 110, and the like, which are not limited herein.

Further, in other embodiments, the number of the baffles 113 may also be 2, or 4, etc., which is not limited herein.

Referring to fig. 1 to 3, in some embodiments, the baffle 113 further has a plurality of noise reduction holes 114.

By providing the noise reduction holes 114 on the baffle 113, noise can be reflected alternately in the air chambers 300, thereby further improving the noise reduction effect of the noise reduction device 100.

In some embodiments, the perforated plate 120 is provided with a plurality of through holes 121 at intervals, and the perforation rate of the perforated plate 120 is P, where P satisfies: p is more than or equal to 1 percent and less than or equal to 10 percent.

It should be noted that, in the process of noise entering the inside of the noise reduction device 100 from the outside, the noise may first pass through the through hole 121; the noise will rub at the neck of the through hole 121, i.e. on the sidewall 112 of the through hole 121, thereby reducing the energy level of the noise, further widening the sound absorption frequency band of the noise reducer 100, and increasing the noise reduction level of the noise reducer 100.

Preferably, any two adjacent through holes 121 are arranged at equal intervals.

Thus, the structure of the perforated plate 120 can be simplified, and the manufacturing processes of the perforated plate 120 can be reduced; the perforated plate 120 can also uniformly absorb noise, thereby improving the noise reduction effect of the noise reduction device 100.

Further, in other embodiments, the positional relationship between the through holes 121 is not limited.

Further, in other embodiments, P may also satisfy: p is more than 10 percent and less than or equal to 15 percent, or P is more than 15 percent and less than or equal to 20 percent, and the like, and the limitation is not excessive.

In some embodiments, the through-hole 121 is circular in shape.

The circular through-hole 121 has a simple structure and is easy to manufacture.

It can be understood that, since the neck surface area of the through-hole 121 is increased, the noise reduction capability of the perforated plate 120 is more excellent as the noise is more consumed to its energy through the through-hole 121.

Further, in other embodiments, the shape of the through hole 121 may also be rectangular, or a pentagram, or a hexagon, etc., which is not limited herein.

In some embodiments, the perforated plate 120 has a thickness H and the through-hole 121 has a diameter R, where H and R satisfy: r is more than or equal to 0.8H and less than or equal to 1.2H.

By making the diameter of the through hole 121 and the thickness of the perforated plate 120 satisfy the above relationship, the noise reduction level of the perforated plate 120 can be improved while satisfying the structural strength of the perforated plate 120.

Specifically, H satisfies: h is more than or equal to 2mm and less than or equal to 10 mm.

Preferably, all the through holes 121 of the european-style perforated plate 120 have the same diameter.

Thus, the noise reduction uniformity of the perforated plate 120 can be improved, and the noise can be prevented from being harsh.

Further, in other embodiments, the diameter of any one of the through holes 121 is not limited.

Further, in other embodiments, H and R may also satisfy: 0.6H < R.ltoreq.1H, or 1.2H < R.ltoreq.1.5H, etc., without being limited thereto.

The noise reduction device 100 provided in the embodiment of the present application can effectively eliminate the noise of the compressor 41050 and 500 Hz. Wherein, the noise reduction device 100 has a noise elimination volume of about 15dBA at 50-200Hz, about 10dBA at 200-500Hz, and above 18dBA at 500 Hz-2000 Hz. The noise reduction device 100 has a good noise reduction effect, and user experience can be obviously improved.

Referring to fig. 2 to 4, the present application further provides an air conditioner (not shown) including an indoor unit (not shown) and an outdoor unit 400 that are connected to each other and the noise reduction device 100 as described above, so that all the same advantages are achieved, and the present invention is not repeated herein.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The noise reduction device 100 and the air conditioner provided in the embodiments of the present application are described in detail above, and specific examples are applied herein to explain the principle and the embodiments of the present application, and the description of the embodiments above is only used to help understand the technical solutions and the core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims (10)

1. A noise reducing device, comprising:

the silencing device comprises a silencing frame and a perforated plate arranged on the silencing frame, wherein the perforated plate and the silencing frame jointly enclose to form a silencing cavity, and a through hole is formed in the perforated plate;

the sound absorption layer is attached to the perforated plate, and the sound absorption layer fills part of the sound attenuation cavity.

2. The noise reducer according to claim 1, wherein the sound absorbing layer is provided with a plurality of protrusions on a surface thereof.

3. The noise reducer of claim 1, wherein the sound absorbing layer is further attached to a side wall of the sound attenuation frame.

4. The noise reducer according to claim 1, wherein the sound absorbing layer is spaced from a side wall of the sound-deadening frame disposed opposite the sound absorbing layer by a distance K, where K satisfies: k is more than or equal to 30mm and less than or equal to 230 mm.

5. The noise reducer of claim 1, wherein a baffle is disposed within the sound attenuation frame.

6. The noise reducer according to claim 5, wherein the baffle plate further comprises a plurality of noise reducing holes.

7. The noise reduction device according to claim 1, wherein the perforated plate is provided with a plurality of through holes at intervals, and has a perforation rate P, where P satisfies: p is more than or equal to 1 percent and less than or equal to 10 percent.

8. The noise reducer according to claim 1, wherein the through-hole has a circular shape.

9. The noise reducer according to claim 7, wherein the perforated plate has a thickness of H and the through hole has a diameter of R, wherein H and R satisfy: r is more than or equal to 0.8H and less than or equal to 1.2H.

10. An air conditioner comprising an indoor unit and an outdoor unit communicating with each other, and the noise reducing device according to any one of claims 1 to 9, the noise reducing device being installed in the outdoor unit.

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