Silencing device and refrigerating and freezing device

Abstract

The utility model relates to the technical field of refrigeration and storage, in particular to a silencer and a refrigerating and freezing device. The silencing device comprises a silencing body, heat dissipation through holes horizontally penetrating through the two opposite side walls are formed in the silencing body, and sound absorption holes are formed in the hole walls of the heat dissipation through holes. Noise elimination cavities which are formed around the heat dissipation through holes and communicate with the sound absorption holes are further formed in the noise elimination body, at least one noise elimination cavity is provided with a bent position, and the bent position is of a first arc-shaped structure. When airflow enters the silencing cavity, the risk that the airflow generates secondary noise at the bending position of the silencing cavity can be reduced. According to the utility model, the impedance matching problem can be essentially improved, so that the silencer not only has a wide negative refractive index frequency band, but also can be well matched with air impedance. According to the refrigerator, the problem that in the prior art, a silencer is poor in noise reduction effect on the compressor bin is solved, the sound quality of the refrigerator is improved, and therefore the purpose of improving user experience is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration storage, in particular to a muffler and a refrigeration and freezing device. Background Art

[0002] The noise and vibration quality problems of refrigerators mainly come from the compressor compartment. The internal space of the compressor compartment is limited, and vibration and noise reduction have reached a bottleneck. There are few solutions to improve the radiated noise of the compressor compartment. In order to solve the problem of radiated noise from the compressor compartment, noise reduction measures are urgently needed to reduce this impact and thus improve the quality of refrigerators.

[0003] At present, superstructure silencers are usually set on both sides of the compressor compartment to reduce the radiated noise of the compressor and dissipate the heat from the compressor compartment. The side wall of the silencer is provided with a heat dissipation through hole connecting the inside and outside of the compressor compartment, and a silencer cavity is provided inside the silencer body. The surrounding wall of the heat dissipation through hole is provided with a sound absorption hole connected to the silencer cavity. The existing superstructure technology mainly utilizes a labyrinth-type acoustic metamaterial based on GSL, which forces sound waves to propagate in a curved and folded channel to increase the propagation path of the sound waves and thus change the phase. The working mechanism of this structure is essentially derived from space folding, rather than local resonance. Since the silencer cavity is a regularly bent cavity that eliminates the characteristic frequency, when there is a cooling fan in the compressor compartment to dissipate heat, when the airflow enters the cavity, it is easy to form Karman vortex secondary noise at the bend in the cavity, which reduces the noise reduction effect of the silencer. This results in poor noise reduction effect of the existing silencer. Utility Model Content

[0004] In view of the above-mentioned problems, the present utility model is proposed to provide a silencer device and a refrigeration and freezing device that overcome the above-mentioned problems or at least partially solve the above-mentioned problems, aiming to solve the problem that the silencer device in the prior art has poor noise reduction effect on the compressor compartment, so as to achieve the purpose of improving user experience.

[0005] The utility model provides a silencing device, comprising:

[0006] A silencer body, wherein a heat dissipation through hole is formed on the silencer body and runs horizontally through the opposite side walls, and a sound absorption hole is formed on the hole wall of the heat dissipation through hole; a sound-absorbing cavity is also formed on the silencer body around the heat dissipation through hole and communicated with the sound absorption hole, wherein at least one of the sound-absorbing cavities has a bend, and the bend is a first arc-shaped structure.

[0007] Optionally, the inlet of at least one of the muffler chambers is a second arc-shaped structure.

[0008] Optionally, at least one of the muffler chambers has a labyrinth structure.

[0009] Optionally, the maze-like structure is a curved maze structure.

[0010] Optionally, the maze structure is an S-shaped maze structure.

[0011] Optionally, a perforated layer is provided at the sound absorbing hole, and the perforated layer has a plurality of openings.

[0012] Optionally, the perforated layer is one or more of metal mesh, sound-absorbing cotton, woven cloth, paper, glass fiber cloth, and acoustic perforated plate.

[0013] Optionally, at least a portion of the surface of the silencer body is a wavy structure.

[0014] In another aspect, the utility model provides a refrigeration and freezing device, comprising:

[0015] A box body, a compressor compartment is arranged in the box body, and a silencer device as described in any one of the above items is also arranged in the box body, and the heat dissipation through hole of the silencer device is connected to the inner side of the compressor compartment.

[0016] Optionally, a cooling fan is provided in the compressor compartment; and / or

[0017] The side wall of the silencer body facing the inner side of the compressor compartment is a wave-shaped structure.

[0018] In the silencer device and refrigeration and freezing device of the present invention, the bend of the silencer chamber is changed from the existing regular straight-edge bend structure to an arc-shaped structure. When airflow enters, the risk of the airflow generating secondary noise at the bend of the silencer chamber can be reduced. In particular, when there is a cooling fan in the compressor compartment, the bend of the arc-shaped structure can significantly reduce the medium and low frequency eddy current noise. Furthermore, the present invention can substantially improve the impedance matching problem by improving the shape of the silencer chamber, so that the silencer device not only has a wide negative refractive index frequency band, but also can be well matched with the air impedance. Therefore, the present invention solves the problem in the prior art that the silencer device has a poor noise reduction effect on the compressor compartment, thereby improving the sound quality of the refrigerator, thereby achieving the purpose of improving the user experience.

[0019] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0021] Figure 1 is a schematic structural diagram of a silencing device according to an embodiment of the utility model;

[0022] Figure 2 It is a schematic structural diagram of a muffler cavity in a muffler device according to one embodiment of the utility model;

[0023] Figure 3 It is a schematic structural diagram of a muffler cavity in a muffler device according to one embodiment of the utility model;

[0024] Figure 4 is a schematic structural diagram of a silencing device according to an embodiment of the utility model;

[0025] Figure 5 is a schematic structural diagram of a refrigeration and freezing device according to one embodiment of the utility model;

[0026] Figure 6 It is a schematic structural diagram of a compressor compartment in a refrigeration and freezing device according to one embodiment of the utility model. DETAILED DESCRIPTION

[0027] Refer to the following Figures 1 to 6 To describe the silencer and the refrigeration and freezing device of the embodiment of the utility model. In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0028] Unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix", "couple" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present utility model according to the specific circumstances.

[0029] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0031] Figure 1 is a schematic structural diagram of the silencing device 100, such as Figure 1 As shown, and refer to Figures 2 to 6 The embodiment of the utility model provides a silencer 100. A silencer 100 includes a silencer body. The silencer body is provided with heat dissipation holes 101 that horizontally penetrate opposite side walls, and sound absorption holes 102 are formed on the hole wall of the heat dissipation holes 101; the silencer body is also provided with a silencer cavity 103 that is around the heat dissipation holes 101 and communicates with the sound absorption holes 102, wherein at least one silencer cavity 103 has a bend, and the bend is a first arc-shaped structure 104.

[0032] When in use, the silencer 100 is installed in the refrigerator to reduce the noise in the compressor compartment 300. The heat dissipation through hole 101 of the silencer body connects the inside and outside of the compressor compartment 300. When the noise in the compressor compartment 300 propagates from the inside to the outside, it enters the inside of the silencer cavity 103 through the heat dissipation through hole 101 and the sound absorption hole 102 of the silencer 100. Under the silencing effect of the silencer cavity 103, the noise is significantly reduced. In addition, the heat dissipation through hole 101 of the silencer body also has the function of heat dissipation, which can transfer the heat in the compressor compartment 300 to the outside of the compressor 301.

[0033] In this embodiment, the bend of the muffler chamber 103 is changed from the existing regular straight-edge bend structure to an arc-shaped structure. When airflow enters, the risk of the airflow generating secondary noise at the bend of the muffler chamber can be reduced. In particular, when there is a cooling fan 302 in the compressor compartment 300, the bend of the arc-shaped structure can significantly reduce the medium and low frequency eddy current noise. Furthermore, this embodiment can substantially improve the impedance matching problem by improving the shape of the muffler chamber 103, so that the muffler 100 not only has a wide negative refractive index frequency band, but also can be well matched with the air impedance. Therefore, this embodiment solves the problem of poor noise reduction effect of the muffler 100 on the compressor compartment 300 in the prior art, thereby improving the sound quality of the refrigerator, thereby achieving the purpose of improving the user experience.

[0034] In some optional embodiments of the present invention, Figure 2 and Figure 3 As shown, the entrance of at least one muffler cavity 103 is a second arc-shaped structure 105 .

[0035] In the prior art, the cavity wall at the entrance of the muffler cavity 103 is a regular straight-edge structure. When airflow passes through, Karman vortex secondary noise will be generated at the entrance of the muffler cavity 103. In order to solve the above problem, the shape of the entrance of the muffler cavity 103 is changed from a regular straight-edge structure to an arc-shaped structure in this embodiment. This embodiment further improves the impedance matching problem in essence, so that the muffler 100 not only has a wider negative refractive index frequency band, but also can better match the air impedance, thereby further improving the noise reduction effect of the muffler 100 and further improving the user experience.

[0036] In some optional embodiments of the present invention, Figure 2 and Figure 3 As shown, at least one muffler cavity 103 is in a labyrinth structure. Specifically, the labyrinth structure can arrange as many muffler cavities 103 as possible, and the depth of the muffler cavity 103 is deep, which can significantly extend the propagation path of the sound, forming an acoustic superstructure, thereby further improving the noise reduction effect of the muffler device 100.

[0037] In some optional embodiments of the present invention, Figure 2 and Figure 3 As shown, the labyrinth structure is a curved labyrinth structure. Specifically, at least one muffler cavity 103 is a curved labyrinth structure.

[0038] Compared with the technical solution of only setting the bending part of the silencer chamber 103 in an arc structure, the present embodiment sets the entire silencer chamber 103 as a curved maze structure, which essentially further improves the impedance matching problem, so that the silencer device 100 not only has a wider negative refractive index frequency band, but also can better match the air impedance; further, when a cooling fan 302 is provided in the compressor compartment 300, the silencer chamber 103 with a curved maze structure can reduce the medium and low frequency eddy current noise of the compressor compartment wind in the silencer device, thereby further improving the noise reduction effect of the silencer device 100, and further improving the user experience.

[0039] In some optional embodiments of the present invention, Figure 2 and Figure 3 As shown, the maze structure is an S-shaped maze structure.

[0040] In this embodiment, through the above-mentioned settings, the impedance matching problem is further improved in essence, so that the silencer 100 not only has a wider negative refractive index frequency band, but also can better match the air impedance, thereby further improving the noise reduction effect of the silencer 100 and further improving the user experience. In particular, when a cooling fan 302 is provided in the compressor compartment 300, the silencer cavity 103 with an S-shaped maze structure can reduce the medium and low frequency eddy current noise of the compressor compartment wind in the silencer. Furthermore, through the above-mentioned settings, the depth of the silencer cavity 103 can be extended, thereby significantly extending the sound propagation path, and further improving the noise reduction effect of the silencer 100.

[0041] In some optional embodiments of the present invention, Figure 1 and Figure 3 As shown, a perforated layer 106 is provided at the sound absorbing hole 102, and a plurality of openings are provided on the perforated layer 106 to connect the muffler cavity 103 and the heat dissipation through hole 101. Specifically, the perforated layer 106 is a micro-perforated layer 106. The perforated layer 106 is fixedly provided at the sound absorbing hole 102, for example, the perforated layer 106 can be bonded to the sound absorbing hole 102, or other fixing methods can be adopted.

[0042] When the silencer 100 is in use, the noise in the compressor compartment 300 propagates from the inside to the outside, and enters the silencer cavity 103 through the heat dissipation through-hole 101, the perforated layer 106 and the sound absorption hole 102 of the silencer 100 in sequence. Under the silencing effect of the perforated layer 106 and the silencer cavity 103, the noise is significantly reduced. In this embodiment, through the above-mentioned configuration, the risk of secondary noise of the airflow at the inlet of the silencer cavity 103 can be further reduced, thereby further improving the noise reduction effect of the silencer 100, and further improving the user experience.

[0043] In some optional embodiments of the present invention, the micro-perforated layer 106 is one or a combination of two or more of metal mesh, sound-absorbing cotton, woven cloth, paper, fiberglass cloth, and acoustic perforated plate. Specifically, the sound-absorbing cotton includes a sponge layer. Preferably, the micro-perforated layer 106 is made of sound-absorbing cotton.

[0044] In some optional embodiments of the present invention, Figure 1 and Figure 3 As shown, the perforated layer 106 is an annular structure, and the perforated layer 106 covers the hole wall of the heat dissipation through hole 101. Compared with the above technical solution of only setting the perforated layer 106 at the sound absorption hole 102, the integral annular perforated layer 106 in this embodiment is more convenient for the installation of the perforated layer 106, thereby improving the assembly efficiency of the silencer 100.

[0045] In some optional embodiments of the present invention, Figure 4 As shown, at least a portion of the surface of the muffler body is a wave-shaped structure 107 .

[0046] In order to further improve the noise reduction effect of the silencer 100, this embodiment sets an undulating wave surface on the surface of the silencer 100. The undulating wave surface causes energy loss to the average sound field. After the sound wave is incident on the random undulating wave surface, it may be scattered in all directions to form a random undulating sound field. The attenuation mechanism of the average sound field is equivalent to that after the sound wave is incident on the undulating wave surface, the reflected wave is still in the mirror reflection direction, but there is energy loss; thereby improving the noise reduction effect of the silencer 100.

[0047] In some optional embodiments of the present invention, the entire surface of the silencer body is a wavy structure 107 .

[0048] In some optional embodiments of the present invention, Figure 4 As shown, the surface of at least one side wall of the muffler body is a wave-shaped structure 107. Preferably, as Figure 4 As shown, the surface of the side wall of the muffler body facing the inside of the compressor compartment 300 is a wavy structure 107. More preferably, the side wall of the muffler body facing the inside of the compressor compartment 300 is a wavy structure 107.

[0049] Specifically, when the silencer 100 is in use, the noise in the compressor compartment 300 propagates from the inside to the outside, first passing through the surface of the wavy structure 107, and then passing through the heat dissipation through-holes 101 and the sound absorption holes 102 of the silencer 100 to enter the silencer cavity 103, and the noise is significantly reduced under the silencing effect of the perforated layer 106 and the silencer cavity 103. In this embodiment, the wavy structure 107 and the silencer cavity 103 have a dual noise reduction effect, which can further enhance the noise reduction effect of the silencer 100, thereby further enhancing the user experience.

[0050] In some optional embodiments of the present invention, the entrance of the muffler cavity 103 is a second arc-shaped structure 105. At least part of the surface of the muffler body is a wave-shaped structure 107. Preferably, the side wall of the muffler body facing the inside of the compressor compartment 300 is a wave-shaped structure 107.

[0051] In this embodiment, since the wavy structure 107 on the surface of the silencer body and the arc-shaped structure at the entrance and bend of the silencer cavity 103 all have the function of reducing noise and silencing sound, the noise reduction effect of the silencer device 100 can be further improved, thereby further improving the user experience.

[0052] In some optional embodiments of the present invention, the entrance of the muffler cavity 103 is a second arc-shaped structure 105. The side wall of the muffler body facing the inside of the compressor compartment 300 is a wave-shaped structure 107. A perforated layer 106 is provided at the sound absorption hole 102, and the perforated layer 106 has a plurality of openings.

[0053] When in use, the silencer 100 is installed in the box 200, and the side wall of the wavy structure 107 faces the inside of the compressor compartment 300. In this embodiment, since the wavy structure 107 on the surface of the silencer body, the silencer cavity 103, and the perforated layer 106 all have the function of reducing noise and silencing, the noise reduction effect of the silencer 100 can be further improved, and the user experience can be further improved.

[0054] In some embodiments of the present invention, the sound-absorbing body is a sound-absorbing metamaterial.

[0055] Specifically, the sound-absorbing metamaterial (MAT metamaterial, MAT is the abbreviation of Metamaterial Absorption Technology) uses a synthetic material with high sound absorption efficiency, and there is a complex maze pattern structure on it. Each maze channel can absorb specific frequencies, and its sound absorption efficiency is as high as 99%. In addition, compared with general sound-absorbing materials, the chemical properties of sound-absorbing metamaterials are more stable, safer, odorless, elastic, fire-retardant, mildew-proof and anti-bacterial, and have a good feel and weight.

[0056] In some optional embodiments of the present invention, the sound-absorbing body is made of ABS material.

[0057] In some optional embodiments of the present invention, a plurality of muffler cavities 103 are provided in the muffler body, wherein at least two muffler cavities 103 have different depths, shapes and apertures. Preferably, any two muffler cavities 103 have different depths, shapes and apertures. Through the above arrangement, the noise reduction frequency and noise reduction range of the muffler device 100 can be improved.

[0058] The utility model also provides a refrigeration and freezing device, such as Figures 5 and 6As shown, the refrigeration and freezing device includes a box body 200, a compressor compartment 300 is arranged in the box body 200, and a silencer 100 as described in any one of the above items is also arranged in the box body 200, and a heat dissipation through hole 101 of the silencer 100 is connected to the inner side of the compressor compartment 300. In this embodiment, by providing the silencer 100, the noise of the compressor compartment 300 can be effectively reduced, thereby improving the noise reduction effect of the refrigeration and freezing device.

[0059] In some optional embodiments of the present invention, Figure 6 As shown, a cooling fan 302 is provided in the compressor compartment 300. Specifically, at least a compressor 301 and a cooling fan 302 are provided in the compressor compartment 300. In some alternative embodiments of the present invention, only a compressor 301 is provided in the compressor compartment 300.

[0060] In some optional embodiments of the present invention, the side wall of the silencer body facing the inner side of the compressor compartment 300 is a wave-shaped structure 107 to further enhance the noise reduction effect of the silencer device 100 .

[0061] In some optional embodiments of the present invention, Figure 5 As shown, the silencer 100 is installed in the ventilation window of the compressor compartment 300. When in use, the heat in the compressor compartment 300 is transported to the outside of the compressor compartment 300 through the heat dissipation through hole 101.

[0062] In some embodiments of the present invention, Figure 6 As shown, the silencer 100 is installed on the inner side of the compartment wall of the compressor compartment 300, and the corresponding compartment wall is provided with a through hole corresponding to the heat dissipation through hole 101. When in use, the heat in the compressor 301 is transported to the outside of the compressor compartment 300 through the heat dissipation through hole 101 and the through hole.

[0063] In some embodiments of the utility model, the silencer 100 is installed on the outer side of the compartment wall of the compressor compartment 300, and a through hole corresponding to the heat dissipation through hole 101 is opened on the corresponding compartment wall. When in use, when the noise in the compressor compartment 300 propagates from the inside to the outside, it enters the interior of the silencer cavity 103 through the through hole, the heat dissipation through hole 101 and the sound absorption hole 102, and the noise is significantly reduced under the silencing effect of the silencer cavity 103. The heat in the compressor 301 is transported to the outside of the compressor compartment 300 through the through hole and the heat dissipation through hole 101. The silencer 100 is located in the foaming layer around the compressor compartment 300, and does not occupy additional volume of the refrigerator, that is, it can minimize the loss of the volume of the refrigerator, and the installation is stable and firm, impact-resistant, and meets the transportation test.

[0064] In some embodiments of the present invention, when the silencer 100 is installed on the outside or inside of the compressor compartment wall 300 , the aperture of the through hole is equal to the aperture of the heat dissipation through hole 101 .

[0065] In some embodiments of the present invention, the compressor compartment 300 includes a compartment wall, and the compartment wall includes a front wall, a rear wall, a top wall, a bottom wall, a left wall, and a right wall. At least one of the front wall, the rear wall, the top wall, the bottom wall, the left wall, and the right wall is provided with a silencer 100. Preferably, as Figures 5 and 6 As shown, silencers 100 are installed on both the left and right walls of the warehouse wall.

[0066] In some optional embodiments of the present invention, the refrigeration and freezing device is a refrigerator.

[0067] A refrigeration system is provided inside the refrigerator. The refrigeration system has a circulation circuit for circulating a refrigerant. The refrigeration system includes a compressor 301, a condenser, a throttling line and an evaporator which are connected in series in sequence.

[0068] In some optional embodiments of the present invention, the compressor compartment 300 can be located at any position of the refrigerator, such as the bottom, middle or top of the refrigerator.

[0069] Preferably, the compressor compartment 300 is located at the bottom of the refrigerator, that is, the compressor compartment 300 is located at the bottom of the cabinet 200 .

[0070] In some optional embodiments of the present invention, the refrigeration and freezing device is a freezer.

[0071] In some optional embodiments of the present invention, sound-absorbing cotton is provided in the compressor compartment 300 .

[0072] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A silencing device, characterized in that: include: A silencer body, wherein a heat dissipation through hole is formed on the silencer body and runs horizontally through the opposite side walls, and a sound absorption hole is formed on the hole wall of the heat dissipation through hole; a sound-absorbing cavity is also formed on the silencer body around the heat dissipation through hole and communicated with the sound absorption hole, wherein at least one of the sound-absorbing cavities has a bend, and the bend is a first arc-shaped structure.

2. The silencing device according to claim 1, characterized in that: The inlet of at least one of the muffler chambers is a second arc-shaped structure.

3. The silencing device according to claim 1, characterized in that: At least one of the muffler chambers has a labyrinth structure.

4. The silencing device according to claim 3, characterized in that: The labyrinth structure is a curved labyrinth structure.

5. The silencing device according to claim 3, characterized in that: The labyrinth structure is an S-shaped labyrinth structure.

6. The silencing device according to claim 1, characterized in that: A perforated layer is provided at the sound absorbing hole, and the perforated layer has a plurality of openings.

7. The silencing device according to claim 6, characterized in that: The perforated layer is one or more of metal mesh, sound-absorbing cotton, woven cloth, paper, glass fiber cloth, and acoustic perforated plate.

8. The silencing device according to claim 1, characterized in that: At least a portion of the surface of the muffler body is a wave-shaped structure.

9. A refrigeration and freezing device, characterized in that: include: A box body, wherein a compressor compartment is arranged in the box body, and a silencer device as described in any one of claims 1 to 8 is also arranged in the box body, and the heat dissipation through holes of the silencer device are connected to the inner side of the compressor compartment.

10. The refrigerator-freezer according to claim 9, characterized in that: A cooling fan is provided in the compressor compartment; and / or The side wall of the silencer body facing the inner side of the compressor compartment is a wave-shaped structure.

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