Silencing assembly and refrigerator

Abstract

The utility model relates to the technical field of noise elimination, in particular to a noise elimination assembly and a refrigerator, the noise elimination assembly comprises a noise elimination body and a noise elimination plate, the noise elimination body comprises a first plate and a second plate, the second plate is arranged on one side of the first plate in the thickness direction, and the second plate and the first plate are arranged at an interval in the thickness direction of the first plate to define a noise elimination cavity; the first plate is provided with a first hole penetrating through the first plate in the thickness direction of the first plate, the silencing plate is detachably arranged in the silencing cavity and divides the silencing cavity into a first silencing cavity and a second silencing cavity, the first silencing cavity and the second silencing cavity are arranged in the thickness direction of the first plate in a spaced mode, and the first silencing cavity communicates with the first hole. And different silencing frequency bands are adapted, the noise is reduced, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of sound elimination, in particular to a sound elimination assembly and a refrigerator. BACKGROUND

[0002] The refrigerator can store food or other items that need to be kept in a low temperature state, and has become a common appliance. However, the compressor installed in the cabin below the back of the refrigerator is prone to noise, which affects the user experience. In related technologies, sound elimination is often performed by setting a sound elimination component on the rear cover plate installed outside the cabin.

[0003] However, the sound elimination method in the related art has a fixed sound elimination frequency band adapted by the sound elimination component, which cannot reduce different frequency band noises, has poor noise reduction effect, and reduces the user experience. CONTENT OF THE UTILITY MODEL

[0004] The present disclosure aims to at least partially solve one of the technical problems in the related art. To this end, the embodiments of the present disclosure propose a sound elimination assembly that can replace different sound elimination plates, adapt to different sound elimination frequency bands, reduce noise, and improve user experience.

[0005] The present disclosure also proposes a refrigerator.

[0006] The sound elimination assembly of the embodiments of the present disclosure comprises: a sound elimination body, the sound elimination body comprising a first plate and a second plate, the second plate being arranged on one side of the first plate in the thickness direction, the second plate being arranged in the thickness direction of the first plate to define a sound elimination cavity, the first plate being provided with a first hole penetrating through the first plate in the thickness direction thereof; a sound elimination plate, the sound elimination plate being detachably arranged in the sound elimination cavity and separating the sound elimination cavity into a first sound elimination cavity and a second sound elimination cavity arranged in the thickness direction of the first plate, the first sound elimination cavity being in communication with the first hole.

[0007] The sound elimination assembly of the embodiments of the present disclosure, by arranging the second plate spaced apart from the first plate on one side of the first plate in the thickness direction to define a sound elimination cavity, and arranging the sound elimination plate in the sound elimination cavity to separate the sound elimination cavity into a first sound elimination cavity and a second sound elimination cavity arranged in the thickness direction of the first plate, on the one hand, noise enters the first sound elimination cavity through the first hole on the first plate, and resonance is generated in the first sound elimination cavity to consume the energy of the noise, on the other hand, the sound elimination plate can further reduce the noise to achieve noise reduction, in addition, the sound elimination plate is detachably arranged in the sound elimination cavity, which facilitates the replacement of the sound elimination plate for reducing different frequency band noises, so that the sound elimination assembly can adapt to different sound elimination frequency bands, and improve the user experience.

[0008] In some embodiments, the sound-absorbing panel is provided with a through hole penetrating through the sound-absorbing panel along the thickness direction of the sound-absorbing panel, the through hole communicating the first sound-absorbing cavity and the second sound-absorbing cavity; and / or, the second panel is provided with a second hole penetrating through the second panel along the thickness direction of the second panel.

[0009] In some embodiments, the first hole has a hole diameter larger than that of the through hole, and the through hole has a hole diameter larger than that of the second hole; and / or, the through hole is arranged staggered with respect to the first hole and the second hole.

[0010] In some embodiments, the first hole, the second hole and the through hole are multiple, the first hole on the first panel has a hole density smaller than that of the through hole on the sound-absorbing panel, and the through hole on the sound-absorbing panel has a hole density smaller than that of the second hole on the second panel.

[0011] In some embodiments, the second panel comprises a first connecting section, a body section and a second connecting section connected in sequence along the length direction of the first panel, the first connecting section is connected to the first panel at one end away from the body section, the second connecting section is connected to the first panel at one end away from the body section, and the body section is arranged parallel to the first panel and spaced apart from the first panel along the thickness direction of the first panel.

[0012] In some embodiments, one end of the body section in a first direction has a folded edge, the first direction is orthogonal to the thickness direction of the first panel and the length direction of the first panel, the folded edge extends along the thickness direction of the first panel and is connected to the first panel, and the folded edge covers one end of the sound-absorbing cavity in the first direction.

[0013] In some embodiments, the sound-absorbing assembly further comprises a cover plate, the cover plate is arranged at the other end of the sound-absorbing cavity in the first direction, and the cover plate is detachably connected to the first panel.

[0014] In some embodiments, the sound-absorbing assembly further comprises a positioning portion, the inner wall surface of the sound-absorbing cavity comprises a first wall surface and a second wall surface arranged opposite along the length direction of the first panel, the positioning portion is arranged on the first wall surface and the second wall surface, and the sound-absorbing panel abuts against the positioning portion.

[0015] In some embodiments, the first panel is provided with a protruding portion on the side away from the second panel, and the first hole is arranged on the protruding portion; and / or, the second panel is provided with a plug-in hole on the side away from the first panel, the plug-in hole is used for fixing a socket; and / or, the first panel comprises a base section and an extension section connected in sequence along the length direction of the first panel, and the second panel is arranged spaced apart from the base section to form the sound-absorbing cavity.

[0016] The refrigerator of the embodiment of the present disclosure comprises the noise elimination assembly of the above embodiment.

[0017] The refrigerator of the embodiment of the present disclosure, due to comprising the noise elimination assembly of the above embodiment, can replace different noise elimination plates, adapt to different noise elimination frequency bands, reduce noise, and improve user experience.

[0018] In some embodiments, comprising: a refrigerator body, a lower end of the refrigerator body having a cabin, an outer end opening of the cabin being provided; a compressor, the compressor being arranged in the cabin, the first plate being connected to the refrigerator body away from one side of the second plate to cover the opening of the cabin, in a projection plane orthogonal to the opening direction of the cabin, the projection of the compressor is located in the projection of the noise elimination cavity. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic view of the noise elimination assembly of the embodiment of the present disclosure.

[0020] Figure 2 is an exploded schematic view of the noise elimination assembly of the embodiment of the present disclosure.

[0021] REFERENCE NUMERALS:

[0022] Noise elimination body 1, first plate 11, base segment 111, extension segment 112, third connecting hole 113,

[0023] Second plate 12, second hole 121, first connecting segment 122, body segment 123, second connecting segment 124, plug-in hole 125,

[0024] Noise elimination cavity 13, first noise elimination cavity 131, second noise elimination cavity 132,

[0025] Noise elimination plate 2, through hole 21,

[0026] Cover plate 3, plate body 31, first connecting hole 311, protrusion 32,

[0027] Positioning part 4. DETAILED DESCRIPTION

[0028] The embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0029] The noise elimination assembly of the embodiment of the present disclosure comprises a noise elimination body 1 and a noise elimination plate 2. The noise elimination body 1 comprises a first plate 11 and a second plate 12, the second plate 12 being arranged on one side of the first plate 11 in the thickness direction, the second plate 12 being connected to the first plate 11 in the thickness direction of the first plate 11 (such as the direction of the arrow A in the figure) and the second plate 12 being connected to the first plate 11 in the direction of the arrow B in the figure. Figure 1The first plate 11 is arranged in the front-rear direction and the second plate 12 is arranged in the front-rear direction to define the sound deadening cavity 13. The first plate 11 is provided with a first hole penetrating the first plate 11 in the thickness direction of the first plate 11. The sound deadening plate 2 is detachably arranged in the sound deadening cavity 13 and divides the sound deadening cavity 13 into a first sound deadening cavity 131 and a second sound deadening cavity 132 arranged in the thickness direction of the first plate 11. The first sound deadening cavity 131 is in communication with the first hole.

[0030] Specifically, as shown in Figures 1-2 The second plate 12 is located on the front side of the first plate 11, or the second plate 12 is located on the rear side of the first plate 11. When the second plate 12 is located on the front side of the first plate 11, the rear end of the second plate 12 is connected to the front end of the first plate 11 to define the sound deadening cavity 13.

[0031] The sound deadening plate 2 extends in the up-down direction and the left-right direction, is arranged in the sound deadening cavity 13 and is spaced apart from the first plate 11 and the second plate 12, and divides the sound deadening cavity 13 into a first sound deadening cavity 131 and a second sound deadening cavity 132 arranged in the front-rear direction. The first sound deadening cavity 131 is arranged adjacent to the first plate 11, the second sound deadening cavity 132 is arranged adjacent to the second plate 12, and noise enters the first sound deadening cavity 131 through the first hole.

[0032] The sound deadening assembly of the embodiment of the present disclosure defines the sound deadening cavity 13 by arranging the second plate 12 spaced apart from the first plate 11 on one side in the thickness direction of the first plate 11, and divides the sound deadening cavity 13 into a first sound deadening cavity 131 and a second sound deadening cavity 132 arranged in the thickness direction of the first plate 11 by arranging the sound deadening plate 2 in the sound deadening cavity 13. On the one hand, noise enters the first sound deadening cavity 131 through the first hole on the first plate 11, and resonance is generated in the first sound deadening cavity 131 to consume the energy of the noise. On the other hand, the sound deadening plate 2 can further reduce the noise, achieve noise reduction, and the sound deadening plate 2 is detachably arranged in the sound deadening cavity 13, which facilitates replacement of the sound deadening plate 2 for reducing noise of different frequency bands, so that the sound deadening assembly can be adapted to different sound deadening frequency bands, and user experience is improved.

[0033] In some embodiments, as shown in Figures 1-2 The sound deadening plate 2 is provided with a through hole 21 penetrating the sound deadening plate 2 in the thickness direction of the sound deadening plate 2, and the through hole 21 is in communication with the first sound deadening cavity 131 and the second sound deadening cavity 132. By arranging the through hole 21 on the sound deadening plate 2, the noise entering the first sound deadening cavity 131 enters the second sound deadening cavity 132 through the through hole 21, and resonance is generated in the second sound deadening cavity 132 to further consume the energy of the noise, thereby improving the noise reduction effect.

[0034] Of course, in other embodiments, the sound-absorbing plate 2 can be made of different sound-absorbing materials to adapt to different frequency bands of noise, thereby adapting to different sound-absorbing frequency bands. Since the sound-absorbing material is usually a porous structure, the through holes 21 may not be provided on the sound-absorbing plate 2. The noise passes through the porous structure of the sound-absorbing material, consuming the energy of the noise and achieving the noise reduction effect.

[0035] In some embodiments, such as Figures 1-2 As shown, the second plate 12 has a second hole 121 extending through it along its thickness. By providing the second hole 121, some noise is allowed to enter the outside air through the second hole 121. The interaction between the outside air and the noise dissipates the noise's energy, thus achieving noise reduction. Furthermore, the second hole 121 on the second plate 12 facilitates airflow, ensuring effective heat dissipation.

[0036] In some embodiments, such as Figure 2 As shown, the diameter of the first hole is larger than the diameter of the through hole 21, and the diameter of the through hole 21 is larger than the diameter of the second hole 121.

[0037] Noise enters the first silencing cavity 131 through the first hole on the first plate 11, resonating within the cavity and consuming its energy, thus achieving the first noise reduction. Some noise enters the second silencing cavity 132 through the through hole 21, resonating within it and achieving the second noise reduction. Some noise enters the outside air through the second hole 121, achieving the third noise reduction through the interaction between the outside air and the noise. By gradually reducing the aperture through which the noise passes, layer-by-layer absorption of noise at different frequencies can be achieved, improving the silencing effect of the silencing component.

[0038] In some embodiments, such as Figure 2 As shown, the through hole 21 is staggered from both the first hole and the second hole 121. This staggered arrangement allows noise to be reflected and scattered multiple times within the first silencing cavity 131 and the second silencing cavity 132, achieving a better noise reduction effect.

[0039] In some embodiments, such as Figures 1-2 As shown, there are multiple first holes, second holes 121, and through holes 21. The pore density of the first holes on the first plate 11 is less than the pore density of the through holes 21 on the sound-absorbing plate 2, and the pore density of the through holes 21 on the sound-absorbing plate 2 is less than the pore density of the second holes 121 on the second plate 12. By gradually increasing the pore density on the sound-absorbing plate 2 and the second plate 12 while maintaining the same heat dissipation area, the number of second holes 121 on the second plate 12 becomes increasingly dense, ensuring layer-by-layer sound attenuation without affecting heat dissipation performance.

[0040] Optionally, different settings of the aperture, number and arrangement of the through holes 21 on the sound-absorbing plate 2 enable the sound-absorbing assembly to replace different sound-absorbing plates 2 to adapt to different sound-absorbing frequency bands, ensuring that the sound-absorbing assembly can effectively reduce the noise frequency band actually required to be reduced.

[0041] Optionally, the plurality of first holes and the plurality of through holes 21 are arranged staggered, and the plurality of through holes 21 and the plurality of second holes 121 are arranged staggered, in other words, in the projection plane orthogonal to the front-rear direction, the projection of the first hole on the first plate 11 and the projection of the through hole 21 on the sound-absorbing plate 2 do not overlap or partially overlap, and the projection of the through hole 21 on the sound-absorbing plate 2 and the projection of the second hole 121 on the second plate 12 do not overlap or partially overlap, preferably do not overlap, avoiding the noise entering the first sound-absorbing cavity 131 through the first hole and then passing through the through hole 21 in a straight line, and avoiding the noise in the first sound-absorbing cavity 131 entering the second sound-absorbing cavity 132 through the through hole 21 and then passing through the second hole 121 in a straight line, so that the noise can be reflected in the first sound-absorbing cavity 131 and the second sound-absorbing cavity 132, prolonging the path of the noise and further consuming the energy of the noise.

[0042] For example, the plurality of first holes are arranged in a matrix on the first plate 11, and the plurality of second holes 121 are arranged in a matrix on the second plate.

[0043] For example, the through holes 21 on the sound-absorbing plate 2 can be arranged in a matrix; or, the through holes 21 on the sound-absorbing plate 2 are arranged in a circle, or the through holes 21 on the sound-absorbing plate 2 are divided into two groups, the two groups of through holes 21 are arranged symmetrically in the up-down direction, and each group of through holes 21 includes a plurality of through holes 21 arranged at intervals in the left-right direction.

[0044] In some embodiments, the second plate 12 includes a first connecting section 122, a body section 123 and a second connecting section 124 connected in sequence in the length direction of the first plate 11 (e.g. the left-right direction as shown), the end of the first connecting section 122 away from the body section 123 is connected with the first plate 11, the end of the second connecting section 124 away from the body section 123 is connected with the first plate 11, and the body section 123 is arranged in parallel with the first plate 11 and at intervals in the thickness direction of the first plate 11. Figure 1 Specifically, as shown in the drawings, the body section 123 extends along the up-down direction and the left-right direction and is arranged at intervals with the first plate 11 in the front-rear direction, the first connecting section 122 is located at the left end of the body section 123, and the second connecting section 124 is located at the right side of the body section 123, both the first connecting section 122 and the second connecting section 124 extend along the front-rear direction, and the first connecting section 122 and the second connecting section 124 are arranged to facilitate the connection of the body section 123 with the first plate 11.

[0045] Figures 1-2

[0046] ​​In some embodiments, the body segment 123 in a first direction (e.g.) Figure 1 One end of the first plate 11 (shown in the vertical direction) has a folded edge (not shown). The first direction is orthogonal to the thickness direction and length direction of the first plate 11. The folded edge extends along the thickness direction of the first plate 11 and is connected to the first plate 11. The folded edge covers one end of the sound-absorbing cavity 13 in the first direction.

[0047] Specifically, the lower end of the body section 123 is provided with a folded edge, which extends in the front-back direction. The rear end of the folded edge is connected to the front end of the first plate 11. The folded edge facilitates the sealing of the lower end of the silencing cavity 13, preventing the silencing plate 2 from falling off the lower end of the silencing cavity 13.

[0048] In some embodiments, the silencing assembly further includes a cover plate 3, which is disposed at the other end of the silencing cavity 13 in the first direction and is detachably connected to the first plate 11.

[0049] Specifically, such as Figures 1-2 As shown, the cover plate 3 is located at the upper end of the silencing cavity 13. The cover plate 3 includes a floor body 31 and a protrusion 32 connected sequentially in the front-to-back direction. The protrusion 32 protrudes forward from the floor body 31 relative to the floor body 31. The floor body 31 is detachably connected to the first plate 11. The protrusion 32 covers the upper end of the silencing cavity 13. The detachable connection between the floor body 31 and the first plate 11 facilitates opening and closing the upper end of the silencing cavity 13, thereby facilitating the replacement of the silencing plate 2 and achieving noise reduction in different frequency bands.

[0050] For example, the plate 31 is provided with a first connecting hole 311 that runs through the plate 31 in the vertical direction, and the upper end of the first plate 11 is provided with a second connecting hole that is opposite to the first connecting hole 311. The connector passes through the first connecting hole 311 and the second connecting hole in sequence to realize the connection between the plate 31 and the first plate 11.

[0051] In some embodiments, such as Figure 2 As shown, the silencing assembly also includes a positioning part 4. The inner wall of the silencing cavity 13 includes a first wall and a second wall arranged opposite to each other along the length of the first plate 11. The positioning part 4 is provided on the first wall and the second wall, and the silencing plate 2 abuts against the positioning part 4. By providing the positioning part 4 on the first wall and the second wall, it is convenient to fix the left and right sides of the silencing plate 2 at the same time, thereby improving the stability of the silencing plate 2.

[0052] Optionally, the positioning part 4 is a sliding groove. The two sliding grooves are arranged opposite each other in the left and right directions. The sliding groove on the left is located on the inner wall of the first connecting section 122, and the sliding groove on the right is located on the inner wall of the second connecting section 124. The sliding grooves facilitate the fixing of the position of the sound-absorbing plate 2 in the sound-absorbing cavity 13, and also facilitate the placement and removal of the sound-absorbing plate 2.

[0053] Optionally, the slide groove on the left is located at the middle position of the first connecting section 122 in its extending direction, and the slide groove on the right is located at the middle position of the second connecting section 124 in its extending direction. By fixing the position of the slide groove, it is convenient for the sound-absorbing plate 2 to evenly divide the sound-absorbing cavity 13 into the first sound-absorbing cavity 131 and the second sound-absorbing cavity 132, which is beneficial to noise reduction.

[0054] In some embodiments, the first plate 11 has a protrusion on the side away from the second plate 12, and a first hole is provided on the protrusion. The protrusion facilitates the placement of sound-absorbing cotton around its outer edge, further improving the sound absorption effect.

[0055] Optionally, the protrusion has a dimension of 2 mm in the front-to-back direction.

[0056] In some embodiments, such as Figures 1-2 As shown, the second plate 12 has a socket 125 on the side away from the first plate 11. The socket 125 is used to fix the socket. The socket 125 facilitates the fixing of the refrigerator socket and improves the aesthetics.

[0057] In some embodiments, such as Figures 1-2 As shown, the first plate 11 includes a base segment 111 and an extension segment 112 connected sequentially along its length. The second plate 12 is arranged at intervals with the base segment 111 to form a sound-absorbing cavity 13. By setting the extension segment 112, the dimension of the second plate 12 in the left-right direction is smaller than that of the first plate 11 in the left-right direction, ensuring the sound-absorbing effect while reducing the cost of the sound-absorbing assembly.

[0058] The refrigerator of this disclosure includes the noise reduction component of the above embodiments.

[0059] The refrigerator of this embodiment includes the sound-absorbing components of the above embodiment, and different sound-absorbing plates 2 can be replaced to adapt to different sound-absorbing frequency bands, thereby reducing noise and improving user experience.

[0060] In some embodiments, the refrigerator includes a refrigerator body and a compressor. The lower end of the refrigerator body has a compartment with an opening at its outer end. The compressor is disposed within the compartment. A first plate 11, on the side away from the second plate 12, is connected to the refrigerator body to cover the opening of the compartment. In a projection plane orthogonal to the direction of the compartment opening, the projection of the compressor lies within the projection of the silencing cavity 13. By setting the projection of the silencing cavity 13 to be greater than or equal to the projection of the compressor in a projection plane orthogonal to the direction of the compartment opening, noise generated by the compressor can easily enter the silencing cavity 13, thereby ensuring the noise reduction effect of the silencing assembly.

[0061] Optionally, the refrigerator also includes a fan installed inside the compartment. The fan's noise is directed to the compressor. By using a noise reduction component, the fan's noise can be effectively reduced, improving the user experience.

[0062] Optionally, the first plate 11 is provided with a third connecting hole 113 penetrating the first plate 11 in the front-rear direction, facilitating detachable connection of the first plate 11 with the refrigerator body.

[0063] In the description of the present disclosure, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0064] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0065] In the present disclosure, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0066] In the present disclosure, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0067] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the disclosure. Illustrative expressions of such terms do not necessarily refer to the same embodiment or example, though it can. Furthermore, such terms can refer to different embodiments or examples of the disclosure working in combination. Additionally, the described features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples, without mutual contradiction.

[0068] It can be understood that the above-mentioned embodiments are exemplary and cannot be understood as a limitation of the disclosure, and those of ordinary skill in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the disclosure.

Claims

1. A sound attenuation assembly, comprising: The muffling body (1) comprises a first plate (11) and a second plate (12) arranged in the thickness direction of the first plate (11) to define a muffling cavity (13), the first plate (11) being provided with a first hole penetrating the first plate (11) in the thickness direction thereof; The muffling plate (2) is detachably arranged in the muffling cavity (13) and separates the muffling cavity (13) into a first muffling cavity (131) and a second muffling cavity (132) arranged in the thickness direction of the first plate (11), the first muffling cavity (131) being in communication with the first hole. The muffling plate (2) is provided with a through hole (21) penetrating the muffling plate (2) in the thickness direction thereof, the through hole (21) being in communication with the first muffling cavity (131) and the second muffling cavity (132); and / or, 2. The sound attenuation assembly of claim 1, wherein, The second plate (12) is provided with a second hole (121) penetrating the second plate (12) in the thickness direction thereof. The hole diameter of the first hole is greater than the hole diameter of the through hole (21), and the hole diameter of the through hole (21) is greater than the hole diameter of the second hole (121); and / or, 3. The sound attenuation assembly of claim 2, wherein, The through hole (21) is arranged away from the first hole and the second hole (121). The first hole, the second hole (121) and the through hole (21) are all multiple, the hole density of the first hole on the first plate (11) is less than the hole density of the through hole (21) on the muffling plate (2), and the hole density of the through hole (21) on the muffling plate (2) is less than the hole density of the second hole (121) on the second plate (12).

4. The sound attenuation assembly of claim 3, wherein, The second plate (12) comprises a first connecting section (122), a body section (123) and a second connecting section (124) connected in sequence in the length direction of the first plate (11), the first connecting section (122) being connected to the first plate (11) at one end away from the body section (123), the second connecting section (124) being connected to the first plate (11) at one end away from the body section (123), and the body section (123) being arranged in parallel with and spaced apart from the first plate (11) in the thickness direction of the first plate (11).

5. The muffling assembly of claim 1, wherein, One end of the body section (123) in a first direction has a folded edge, the first direction being orthogonal to the thickness direction of the first plate (11) and the length direction of the first plate (11), the folded edge extending in the thickness direction of the first plate (11) and being connected to the first plate (11), and the folded edge covering one end of the muffling cavity (13) in the first direction.

6. The sound attenuation assembly of claim 5, wherein, The cover plate (3) is arranged at the other end of the muffling cavity (13) in the first direction, and the cover plate (3) is detachably connected to the first plate (11).

7. The sound attenuation assembly of claim 6, wherein, ​ 8. The sound attenuation assembly of any one of claims 1-7, wherein, The inner wall surface of the sound attenuation cavity (13) comprises a first wall surface and a second wall surface arranged oppositely in the length direction of the first plate (11), and the positioning portion (4) is arranged on the first wall surface and the second wall surface, and the sound attenuation plate (2) is in abutment with the positioning portion (4).

9. The sound attenuation assembly of any one of claims 1-7, wherein, The first plate (11) is provided with a protruding portion on the side away from the second plate (12), and the first hole is arranged on the protruding portion; and / or, The second plate (12) is provided with a plug-in hole (125) on the side away from the first plate (11), and the plug-in hole (125) is used for fixing a socket; and / or, The first plate (11) comprises a base segment (111) and an extension segment (112) connected in sequence in the length direction of the first plate (11), and the second plate (12) is arranged in a spaced manner with the base segment (111) to form the sound attenuation cavity (13).

10. A refrigerator characterized by comprising: The sound attenuation assembly comprises the sound attenuation assembly according to any one of claims 1-9.

11. The refrigerator according to claim 10, characterized in that, The sound attenuation assembly comprises: A refrigerator body, a cabin is arranged at the lower end of the refrigerator body, and the outer end of the cabin is provided with an opening; A compressor is arranged in the cabin, the side of the first plate (11) away from the second plate (12) is connected with the refrigerator body to cover the opening of the cabin, and in the projection plane perpendicular to the opening direction of the cabin, the projection of the compressor is located in the projection of the sound attenuation cavity (13).

Images