A refrigeration and freezing device

Abstract

The utility model provides a refrigeration and freezing device, including a box body and a silencer. The box body includes a press chamber, which is configured to accommodate a compressor, and has a heat dissipation wall on at least one of the left and right sides of the press chamber, the heat dissipation wall is at least filled with foaming material to form a foaming layer or is not filled with foaming material, and a first heat dissipation channel that runs through the inside and outside is defined in the heat dissipation wall. The silencer is arranged on the outside of the heat dissipation wall, and defines a second heat dissipation channel and a resonance cavity, wherein the second heat dissipation channel is connected to the first heat dissipation channel, and the opening of the resonance cavity is connected to the second heat dissipation channel. When the heat dissipation wall is at least filled with foaming material, the thickness of the foaming layer in the left and right directions is at least less than or equal to the thickness of the silencer. The silencer is arranged on the outside of the heat dissipation wall, so that the silencer is not limited by the thickness of the foaming layer in the heat dissipation wall, and the noise of the silencer is effectively consumed, thereby avoiding users from being subjected to large noise and improving user experience.

Description

Technical Field

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

[0002] With the use of silencers on the compressor compartment of the product to reduce noise, silencers have become an important means of dealing with the operating noise of refrigerators (especially compressor noise). However, on the one hand, silencers are usually set in the foam layer of the compressor compartment, and on the other hand, the foam layers on both sides of the compressor compartment of some small-capacity refrigerators are thin. Therefore, after the silencers are installed in the foam layers of these small-capacity refrigerators, the silencers will be limited by the thin thickness, resulting in insufficient depth of the silencer channel, so that the noise carried in the heat dissipation airflow cannot be effectively consumed, which in turn causes the problem of unsatisfactory noise reduction effect, so that users still suffer from loud noise. Utility Model Content

[0003] In view of the above problems, the present utility model is proposed to provide a refrigeration and freezing device that overcomes the above problems or at least partially solves the above problems, and can solve the problem that a silencer of effective thickness cannot be installed in the foam layer of the refrigerator, thereby achieving the purpose of improving user experience.

[0004] Specifically, the utility model provides a refrigeration and freezing device, comprising:

[0005] The box body includes a press chamber, which is configured to accommodate a compressor and has a heat dissipation wall on at least one of the left and right sides of the press chamber. The heat dissipation wall is at least filled with foaming material to form a foaming layer or is not filled with foaming material, and a first heat dissipation channel that runs through the inside and outside is defined in the heat dissipation wall.

[0006] A silencer is arranged outside the heat dissipation wall and defines a second heat dissipation channel and a resonance cavity, wherein the second heat dissipation channel is communicated with the first heat dissipation channel, and an opening of the resonance cavity is communicated with the second heat dissipation channel.

[0007] When at least the foam material is filled in the heat dissipation wall, the thickness of the foam layer in the left-right direction is at least less than or equal to the thickness of the silencer.

[0008] Optionally, the thickness of the silencer is in the range of 15 mm to 30 mm.

[0009] Furthermore, the thinnest thickness of the heat dissipation wall is less than or equal to 15 mm.

[0010] Optionally, the silencer is connected to the heat dissipation wall in at least one of the following ways:

[0011] Bonding, fastening, riveting and snap-fitting.

[0012] Optionally, a recessed portion sunken into the press chamber is formed on the outer wall surface of the heat dissipation wall, and the outer end opening of the first heat dissipation channel is located in the recessed portion.

[0013] Optionally, the heat dissipation wall includes:

[0014] The shell wall is bent toward the press chamber around the outer end opening of the first heat dissipation channel to form the recessed portion.

[0015] The bin wall abuts against or is clearance-fitted against the inner side of the recess.

[0016] Optionally, in the case where the heat dissipation wall is provided on both the left and right sides of the compressor compartment, the compressor is close to the heat dissipation wall on the left or right side of the compressor compartment.

[0017] Optionally, in the case where the heat dissipation walls are provided on both the left and right sides of the press chamber, there are two silencers, each of which is arranged on the heat dissipation walls on the left and right sides of the press chamber.

[0018] Furthermore, the first heat dissipation channels on the heat dissipation walls on the left and right sides of the press chamber are opposite to or staggered in the left-right direction.

[0019] Optionally, when the two first heat dissipation channels are staggered in the left-right direction, there is a distance between the central axes of the two first heat dissipation channels at least in the up-down direction.

[0020] Optionally, the second heat dissipation channel extends in the left-right direction, there are multiple resonant cavities, and the openings of the resonant cavities are spaced apart in the circumferential direction of the second heat dissipation channel.

[0021] Each of the resonant cavities satisfies at least one of the following conditions:

[0022] On the channel wall of the second heat dissipation channel, the opening area of ​​the lower resonance cavity opening is larger than the opening area of ​​the upper resonance cavity opening.

[0023] On the channel wall of the second heat dissipation channel, the channel cross-sectional area of ​​the resonance cavity opening at the lower side is larger than the channel cross-sectional area of ​​the resonance cavity opening at the upper side.

[0024] The depth of the resonant cavity opened at the lower side is smaller than the depth of the resonant cavity opened at the upper side.

[0025] On the channel wall of the second heat dissipation channel, the number of the resonant cavity openings on the lower side is less than the number of the resonant cavity openings on the upper side.

[0026] Optionally, a protective structure is provided or integrally formed at least on the outer end opening of the second heat dissipation channel, and the protective structure is in a grid shape.

[0027] In the refrigeration and freezing device of the utility model, when the thickness of the foam layer of the press chamber is less than or equal to the thickness of the silencer, the silencer is arranged on the outside of the heat dissipation wall, so that the silencer is not limited by the thickness of the foam layer, and there is no need to sacrifice the silencer effect to change the thickness of the silencer. In the case where the heat dissipation wall is not filled with foam material, the silencer can also be arranged on the outside of the heat dissipation wall. When the heat dissipation airflow passes through the first heat dissipation channel and enters the second heat dissipation channel, the noise is consumed by the resonance cavity, reducing the noise generated outward from the press chamber, avoiding users from being subjected to large noise, and achieving the purpose of improving user experience.

[0028] 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

[0029] 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:

[0030] Figure 1 is a schematic front view of a refrigeration and freezing device according to an embodiment of the utility model;

[0031] Figure 2 is a schematic partial diagram of a refrigeration and freezing device according to an embodiment of the utility model;

[0032] Figure 3 is a schematic partial diagram of a refrigeration and freezing device according to an embodiment of the utility model;

[0033] Figure 4 It is a schematic partial structural diagram of a refrigeration and freezing device according to an embodiment of the utility model;

[0034] Figure 5 It is a schematic structural diagram of a silencing device according to an embodiment of the utility model.

[0035] List of reference numerals: 100, housing; 110, heat dissipation wall; 111, first heat dissipation channel; 121, shell wall; 122, chamber wall; 200, press chamber; 210, compressor; 300, silencer; 310, second heat dissipation channel; 320, resonance cavity; 400, recess. DETAILED DESCRIPTION

[0036] Refer to the following Figures 1 to 5 To describe a refrigeration and freezing device of an embodiment of the present 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 present 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 may further include other features.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Figure 1is a schematic front view of a refrigeration and freezing device according to an embodiment of the utility model, as shown Figure 1 As shown, and refer to Figures 2 to 5 The embodiment of the utility model provides a refrigeration and freezing device, including a box body 100 and a muffler 300. The box body 100 includes a press chamber 200, which is configured to accommodate a compressor 210, and has a heat dissipation wall 110 on at least one of the left and right sides of the press chamber 200, wherein the heat dissipation wall 110 is at least filled with a foaming material to form a foaming layer, and a first heat dissipation channel 111 that runs through the inside and outside is defined in the heat dissipation wall 110. The muffler 300 is disposed on the outside of the heat dissipation wall 110, and defines a second heat dissipation channel 310 and a resonance cavity 320, wherein the second heat dissipation channel 310 is in communication with the first heat dissipation channel 111, and the opening of the resonance cavity 320 is in communication with the second heat dissipation channel 310. In the left-right direction, the thickness of the foaming layer is at least less than or equal to the thickness H of the muffler 300.

[0041] In this embodiment, the example in which both the left and right sides of the press chamber 200 have heat dissipation walls 110 is taken. The interior of the press chamber 200 is connected to the outside of the refrigeration and freezing device through the first heat dissipation channel 111 and the second heat dissipation channel 310, thereby achieving the purpose of heat dissipation inside the press chamber 200. The silencer 300 can be a sound-absorbing metamaterial, and a silencer channel is provided inside the silencer 300, and the silencer channel of the silencer 300 is connected to the second heat dissipation channel 310, so that the noise carried in the heat dissipation airflow is consumed in the silencer channel. Preferably, the silencer channel is a resonant cavity 320. Alternatively, the silencer channel can also be a silencer cavity with a labyrinth structure, an acoustic flow structure, a honeycomb structure or a straight pipe structure. When the thickness h of the heat dissipation wall 110 of the press chamber 200 is less than or equal to the thickness H of the silencer 300, resulting in the thickness of the foam layer being less than or equal to the thickness H of the silencer 300, it is impossible to ensure that the silencer 300 can have foaming materials flowing in and filling both sides after being installed in the foam layer, and it may even be impossible to install the silencer 300 in the foam layer. The silencer 300 is arranged on the outside of the heat dissipation wall 110, so that the silencer 300 is not limited by the thickness of the foam layer, and there is no need to sacrifice the silencer effect to change the thickness H of the silencer 300. The noise carried in the heat dissipation airflow is effectively consumed in the resonance cavity 320 after passing through the first heat dissipation channel 111 and the second heat dissipation channel 310, thereby reducing the noise generated outward by the press chamber 200, avoiding the user from being subjected to a large noise, and achieving the purpose of improving the user experience. Moreover, the silencer 300 is installed on the outside of the heat dissipation wall 110 of the press chamber 200, and also has a noise reduction effect on the external environment or the external noise of the refrigeration and freezing device. Moreover, the silencer 300 is close to the user, thereby improving the noise reduction effect. Furthermore, compared with arranging the silencer 300 in the heat dissipation wall 110, the silencer 300 of this embodiment is farther away from the compressor 210, which reduces the influence of the heat generated by the compressor 210 on the silencer 300 and improves the service life of the silencer 300.

[0042] Alternatively, in some other embodiments of the present invention, the heat dissipation wall 110 may not be filled with foaming material.

[0043] In this embodiment, the heat dissipation wall 110 is not filled with foam material. Even if the thickness h of the heat dissipation wall 110 is not limited, the silencer 300 cannot be arranged in the heat dissipation wall 110 without the wrapping of the foam material, and the silencer 300 is arranged on the outside of the heat dissipation wall 110. The noise carried in the heat dissipation airflow is effectively consumed in the resonance cavity 320 after passing through the first heat dissipation channel 111 and the second heat dissipation channel 310, reducing the noise generated outward by the compressor chamber 200, avoiding the user from being subjected to a large noise, and achieving the purpose of improving the user experience. In addition, the heat dissipation wall 110 is not filled with foam material, which reduces the use of foam material, thereby reducing the production cost of the refrigeration and freezing device.

[0044] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the thickness H of the silencer 300 is in the range of 15 mm to 30 mm. In addition, the thickness of the thinnest part of the heat dissipation wall 110 is less than or equal to 15 mm.

[0045] In this embodiment, a low-cost small refrigerator is used as an example of a refrigeration and freezing device. In order to reduce the production cost of the refrigeration and freezing device, the thickness of the thinnest part of the heat dissipation wall 110 is less than or equal to 15 mm, the thickness of the foaming layer in the heat dissipation wall 110 is less than or equal to 15 mm, or the heat dissipation wall 110 is not filled with foaming material. In addition, the thickness H of the silencer 300 is greater than or equal to 15 mm to ensure that the depth of the resonance cavity 320 in the silencer 300 is sufficient, so that the noise carried in the heat dissipation airflow is effectively consumed after passing through the resonance cavity 320 to ensure the noise reduction effect. In addition, the thickness H of the silencer 300 is less than or equal to 30 mm, which reduces the volume of the silencer 300 to a certain extent while ensuring the utilization rate of the resonance cavity 320, thereby reducing the manufacturing cost of the silencer 300.

[0046] In some embodiments of the present invention, the silencer 300 is connected to the heat dissipation wall 110 by bonding.

[0047] In this embodiment, the silencer 300 is bonded to the heat dissipation wall 110, so that the shell does not need to design and process the structure of the silencer 300 in advance during the production process, and only needs to perform the bonding operation when installing the silencer 300. In addition, when the silencer 300 needs to be replaced or repaired, the bonded structure is easy to disassemble, which improves the user experience. This connection method is convenient for the production and processing of the refrigeration and freezing device, simplifies the installation and disassembly method of the silencer 300, and thus reduces the cost of production.

[0048] Alternatively, the silencer 300 may also be connected to the heat dissipation wall 110 by a fastening connection or a snap connection.

[0049] In some embodiments of the present invention, Figure 3 As shown, a recess 400 recessed toward the press chamber 200 is formed on the outer wall surface of the heat dissipation wall 110 , and the outer end opening of the first heat dissipation channel 111 is located in the recess 400 .

[0050] In this embodiment, the heat in the heat dissipation airflow is conducted outward from the inside of the first heat dissipation channel 111, and the heat is dissipated outward through the flow of airflow. The outer end opening of the first heat dissipation channel 111 is recessed into the compressor chamber 200, which improves the efficiency of heat exchange between the heat dissipation airflow and the outside world, thereby improving the heat dissipation effect of the compressor chamber 200, and extending the service life of the compressor 210 and even the refrigeration and freezing device.

[0051] Furthermore, the recess 400 cooperates with the surface of the silencer 300 so that the silencer 300 can be fixedly connected to the recess 400, and the first heat dissipation channel 111 and the second heat dissipation channel 310 are connected, so as to reduce the interference of the silencer 300 with the external environment, thereby reducing the chance of the silencer 300 being bumped and improving the service life of the refrigeration and freezing device.

[0052] In some embodiments of the present invention, the heat dissipation wall 110 includes a shell wall 121 and a chamber wall 122. The shell wall 121 is bent toward the press chamber 200 around the outer end opening of the first heat dissipation channel 111 to form a recess 400. The chamber wall 122 abuts against the inner side of the recess 400.

[0053] In this embodiment, the bin wall 122 contacts and abuts against the recessed portion 400 of the shell wall 121. When the spatial volume inside the press bin 200 is constant, the total external volume of the refrigeration and freezing device is reduced as much as possible, thereby reducing the manufacturing cost and reducing the space occupied by the refrigeration and freezing device when it is installed, thereby satisfying the user's requirement for reducing the space occupied by the refrigeration and freezing device and making it suitable for more usage scenarios.

[0054] In other embodiments of the present invention, Figure 2 and Figure 3 As shown, the bin wall 122 may also be loosely fitted inside the recess 400 .

[0055] In this embodiment, foaming material may be added between the clearance-fitting warehouse wall 122 and the recessed portion 400 of the shell wall 121 to improve the noise reduction effect of the refrigeration and freezing device, thereby improving the user experience.

[0056] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, when both the left and right sides of the press chamber 200 have the heat dissipation wall 110 , the compressor 210 is close to the heat dissipation wall 110 on the left side of the press chamber 200 .

[0057] Alternatively, the compressor 210 may also be close to the heat dissipation wall 110 on the right side of the compressor chamber 200 .

[0058] In this embodiment, the compressor 210 is close to the heat dissipation wall 110, that is, close to the first heat dissipation channel 111. On the one hand, the heat generated by the compressor 210 is quickly discharged from the inside of the compressor chamber 200 through the first heat dissipation channel 111. On the other hand, the compressor 210 is close to the silencer 300, so that the silencer 300 has a better sound receiving effect on the noise generated by the compressor 210, thereby improving the noise reduction effect of the refrigeration and freezing device.

[0059] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, when there are heat dissipation walls 110 on both the left and right sides of the press chamber 200, there are two silencers 300, which are respectively arranged on the heat dissipation walls 110 on the left and right sides of the press chamber 200 to improve the noise reduction effect.

[0060] Furthermore, if Figure 1 As shown, the first heat dissipation channels 111 on the heat dissipation walls 110 on the left and right sides of the press chamber 200 are relatively distributed in the left and right directions.

[0061] In this embodiment, the airflow flows through two oppositely arranged first heat dissipation channels 111, so that the airflow can flow more smoothly, reducing the resistance of the heat dissipation wall 110 to the heat dissipation airflow, thereby improving the heat dissipation efficiency.

[0062] Or, in other embodiments of the present invention, Figure 2 As shown, the first heat dissipation channels 111 on the heat dissipation walls 110 on the left and right sides of the press chamber 200 are staggered in the left and right directions.

[0063] Preferably, when the two first heat dissipation channels 111 are staggered in the left-right direction, there is a distance between the central axes of the two first heat dissipation channels 111 at least in the up-down direction.

[0064] In this embodiment, when the compressor 210 is working, the heat dissipation airflow with a higher temperature in the compressor chamber 200 flows upward. Since the first heat dissipation channels 111 are staggered up and down, the heat dissipation airflow with a higher temperature is discharged from the compressor chamber 200 from the first heat dissipation channel 111 located at the upper position. At the same time, since the heat dissipation airflow flows upward, a negative pressure is generated at the bottom of the compressor chamber 200. Under the action of the atmospheric pressure outside the compressor chamber 200, the airflow outside the compressor chamber 200 enters the compressor chamber 200 through the first heat dissipation channel 111 located at the lower position. In other words, the first heat dissipation channel 111 located at the upper position is the airflow outlet of the compressor chamber 200, and the first heat dissipation channel 111 located at the lower position is the airflow inlet of the compressor chamber 200, so as to form an airflow channel running through the compressor chamber 200, so that the airflow can quickly flow through the compressor chamber 200, take away the heat in the compressor chamber 200, and further improve the heat dissipation effect of the compressor chamber 200.

[0065] In some embodiments of the present invention, Figure 3 and Figure 5 As shown, the second heat dissipation channel 310 extends in the left-right direction, there are multiple resonant cavities 320, and the openings of each resonant cavity 320 are distributed at intervals in the circumferential direction of the second heat dissipation channel 310. And on the channel wall of the second heat dissipation channel 310, the opening area of ​​the lower resonant cavity 320 opening is larger than the opening area of ​​the upper resonant cavity 320 opening.

[0066] In this embodiment, on the one hand, since the upper resonant cavity 320 is mainly used to reduce the noise of low-frequency sound waves, and the lower resonant cavity 320 is mainly used to reduce the noise of high-frequency sound waves, the opening area of ​​the upper resonant cavity 320 is smaller than the opening area of ​​the lower resonant cavity 320, which is more conducive to improving the noise reduction effect of the upper resonant cavity 320 on low-frequency sound waves, and more conducive to improving the noise reduction effect of the lower resonant cavity 320 on high-frequency sound waves, thereby improving the noise reduction effect of the compressor chamber 200, and then improving the noise reduction effect of the refrigeration and freezing device, so as to further improve the user experience. On the other hand, since the opening area of ​​the upper resonant cavity 320 is smaller than the opening area of ​​the lower resonant cavity 320, it is more conducive to dust removal and cleaning of the lower resonant cavity 320 with the opening facing upward.

[0067] In some embodiments of the present invention, Figure 4 and Figure 5 As shown, on the channel wall of the second heat dissipation channel 310 , the number of openings of the lower resonance cavity 320 is less than the number of openings of the upper resonance cavity 320 .

[0068] In this embodiment, since the number of openings of the upper resonance cavity 320 is greater than the number of openings of the lower resonance cavity 320, the number of the upper resonance cavity 320 is greater than the number of the lower resonance cavity 320. In addition, since the noise of the compressor chamber 200 is mainly low-frequency noise, this structure is more conducive to the silencing device 300 to reduce the noise of low-frequency sound waves, which can be more conducive to improving the noise reduction effect of the compressor chamber 200, thereby improving the noise reduction effect of the refrigeration and freezing device.

[0069] In some embodiments of the present invention, Figure 4 and Figure 5 As shown, on the channel wall of the second heat dissipation channel 310 , the channel cross-sectional area of ​​the resonance cavity 320 opening at the lower side is larger than the channel cross-sectional area of ​​the resonance cavity 320 opening at the upper side.

[0070] In this embodiment, when the noise in the compressor chamber 200 passes through the second heat dissipation channel 310, part of the noise enters the interior of the resonance chamber 320 through the opening of the resonance chamber 320. Since the upper resonance chamber 320 is mainly used to reduce the noise of low-frequency sound waves, and the lower resonance chamber 320 is mainly used to reduce the noise of high-frequency sound waves, the channel cross-sectional area of ​​the upper resonance chamber 320 is smaller than the channel cross-sectional area of ​​the lower resonance chamber 320, which is more conducive to improving the noise reduction effect of the upper resonance chamber 320 on low-frequency sound waves, and more conducive to improving the noise reduction effect of the lower resonance chamber 320 on high-frequency sound waves, thereby improving the noise reduction effect of the compressor chamber 200, and then improving the noise reduction effect of the refrigeration and freezing device, so as to further improve the user experience. Moreover, the channel cross-sectional area of ​​the lower resonance chamber 320 is larger than the channel cross-sectional area of ​​the upper resonance chamber 320, which is more conducive to dust removal and cleaning of the lower resonance chamber 320 with the opening facing upward.

[0071] In some embodiments of the present invention, Figure 5 As shown, the depth of the resonant cavity 320 opened at the lower side is smaller than the depth of the resonant cavity 320 opened at the upper side.

[0072] In this embodiment, on the one hand, since the depth of the upper resonance cavity 320 is greater than the depth of the lower resonance cavity 320. Therefore, based on the mechanism that the wavelength of low-frequency sound waves is longer than that of high-frequency sound waves, the upper resonance cavity 320 is mainly used to reduce the noise of low-frequency sound waves, and the lower resonance cavity 320 is mainly used to reduce the noise of high-frequency sound waves, that is, the silencer 300 can be used for both low-frequency noise reduction and high-frequency noise reduction, and the silencer 300 has a wide action frequency band, a wide-band noise reduction effect, and a good noise reduction effect, so that the compressor chamber 200 can be effectively noise-reduced, and then the refrigeration and freezing device can be effectively noise-reduced, thereby improving the user experience.

[0073] On the other hand, since the opening of the upper resonance cavity 320 faces downward, and the opening of the lower resonance cavity 320 faces upward. When in use, dust is not easy to enter the upper resonance cavity 320, and the dust has little effect on the upper resonance cavity 320. In addition, since the main frequency of the compressor chamber 200 is low-frequency noise, even if dust enters the lower resonance cavity 320, it will not have a significant impact on the noise reduction of the compressor 210. Therefore, this design reduces the impact of dust on the noise reduction effect of the compressor chamber 200. In addition, since the depth of the lower resonance cavity 320 is shallow, it is easier to clean and dust the lower resonance cavity 320. This design can minimize the impact of dust on the noise reduction effect during use, so that the silencer 300 has a good noise reduction effect.

[0074] In some embodiments of the present invention, a protective structure is provided at least on the outer end opening of the second heat dissipation channel 310 , and the protective structure is in a grid shape.

[0075] In this embodiment, the protective structure can not only ensure ventilation and heat dissipation inside and outside the press chamber 200, but also prevent debris, animals, etc. from entering.

[0076] Alternatively, in some other embodiments of the present invention, the protection structure is integrally formed on the outer opening of the second heat dissipation channel 310 .

[0077] In this embodiment, the protective structure is integrally formed with the outer end opening of the second heat dissipation channel 310. On the one hand, resonance and noise can be avoided at the connection between the protective structure and the outer end of the second heat dissipation channel 310 when the compressor 210 is working, thereby avoiding reduction in the sound quality of the refrigeration and freezing device. On the other hand, the manufacturing efficiency of the protective structure can be improved and the manufacturing cost can be reduced.

[0078] In some embodiments of the present invention, the refrigeration and freezing device is a small-capacity refrigerator.

[0079] Furthermore, the heat dissipation wall 110 of the small-capacity refrigerator is not filled with foaming material.

[0080] Alternatively, the heat dissipation wall 110 of the small-capacity refrigerator is filled with less foaming material, so that the thickness of the foaming layer is less than or equal to the thickness H of the silencer 300 .

[0081] 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 refrigeration and freezing device, characterized in that: include: A box body, comprising a press chamber, the press chamber being configured to accommodate a compressor, and having a heat dissipation wall on at least one of a left side and a right side of the press chamber, the heat dissipation wall being filled with at least a foaming material to form a foaming layer or not filled with a foaming material, and defining a first heat dissipation channel running through the inside and outside of the heat dissipation wall; a silencer, disposed on the outer side of the heat dissipation wall and defining a second heat dissipation channel and a resonance cavity, wherein the second heat dissipation channel is in communication with the first heat dissipation channel, and an opening of the resonance cavity is in communication with the second heat dissipation channel; and When at least the foam material is filled in the heat dissipation wall, the thickness of the foam layer in the left-right direction is at least less than or equal to the thickness of the silencer.

2. The refrigeration and freezing device according to claim 1, characterized in that: The thickness of the muffler is in the range of 15 mm to 30 mm; and The thinnest thickness of the heat dissipation wall is less than or equal to 15 mm.

3. The refrigeration and freezing device according to claim 1, characterized in that: The silencer is connected to the heat dissipation wall in at least one of the following ways: Bonding, fastening, riveting and snap-fitting.

4. The refrigeration and freezing device according to claim 1, characterized in that: A recessed portion sunken into the press chamber is formed on the outer wall surface of the heat dissipation wall, and the outer end opening of the first heat dissipation channel is located in the recessed portion.

5. The refrigerator-freezer according to claim 4, characterized in that: The heat dissipation wall comprises: A shell wall is bent around the outer end opening of the first heat dissipation channel toward the press chamber to form the recess; The bin wall abuts against or is clearance-fitted against the inner side of the recess.

6. The refrigerator-freezer according to claim 1, characterized in that: In the case where the heat dissipation wall is provided on both the left and right sides of the press chamber, The compressor is close to the heat dissipation wall on the left or right side of the compressor chamber.

7. The refrigerator-freezer according to claim 1, characterized in that: In the case where the heat dissipation wall is provided on both the left and right sides of the press chamber, There are two silencers, each of which is arranged on the heat dissipation wall on the left and right sides of the press chamber; and The first heat dissipation channels on the heat dissipation walls on the left and right sides of the press chamber are opposite or staggered in the left-right direction.

8. The refrigerator-freezer according to claim 7, characterized in that: When the two first heat dissipation channels are staggered in the left and right directions, There is a distance between the central axes of the two first heat dissipation channels at least in the up-down direction.

9. The refrigerator-freezer according to claim 1, characterized in that: The second heat dissipation channel extends in the left-right direction, there are a plurality of resonant cavities, and the openings of the resonant cavities are distributed at intervals in the circumferential direction of the second heat dissipation channel; and Each of the resonant cavities satisfies at least one of the following conditions: On the channel wall of the second heat dissipation channel, the opening area of ​​the lower resonant cavity opening is larger than the opening area of ​​the upper resonant cavity opening; On the channel wall of the second heat dissipation channel, the channel cross-sectional area of ​​the resonant cavity opening at the lower side is larger than the channel cross-sectional area of ​​the resonant cavity opening at the upper side; The depth of the resonant cavity opened at the lower side is smaller than the depth of the resonant cavity opened at the upper side; On the channel wall of the second heat dissipation channel, the number of the resonant cavity openings on the lower side is less than the number of the resonant cavity openings on the upper side.

10. The refrigerator-freezer according to claim 1, characterized in that: A protective structure is provided or formed integrally at least on the outer end opening of the second heat dissipation channel, and the protective structure is in a grid shape.

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