Silencing device and refrigerating and freezing device

Abstract

The invention 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, a through hole horizontally penetrating through two opposite side walls is formed in the silencing body, sound absorption holes are formed in the hole wall of the through hole, at least one sound absorption hole with a downward opening is recorded as a first sound absorption hole, and at least one sound absorption hole with an upward opening is recorded as a second sound absorption hole; silencing cavities communicated with the sound absorption holes are further formed in the silencing body around the through hole, the silencing cavity communicated with the first sound absorption hole is marked as a first silencing cavity, and the silencing cavity communicated with the second sound absorption hole is marked as a second silencing cavity; and the length of the first silencing cavity is greater than that of the second silencing cavity. The refrigerator can be used for low-frequency noise reduction and high-frequency noise reduction, has a broadband noise reduction effect, is good in noise reduction effect, can effectively reduce noise of the refrigerator, and improves the use experience of a user. In addition, the influence of dust on the noise reduction effect can be reduced as much as possible.

Description

Technical Field

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

[0002] At present, refrigerator noise is an important indicator of refrigerator performance. Compressor noise is the main noise source, and its noise contribution often accounts for more than 70%. In addition, abnormal noises in refrigerators frequently occur in the compressor compartment, which seriously affects the sound quality of refrigerator noise. In the prior art, a silencer is usually provided on the ventilation windows on the left and right sides of the compressor compartment, and the noise of the compressor compartment is reduced by the silencer. A through hole is provided on the side wall of the silencer, and a silencer cavity is provided inside the silencer body. A sound-absorbing hole connected to the silencer cavity is provided on the peripheral wall of the through hole. However, the silencer cavity of the existing silencer does not have a corresponding design standard, which results in a poor noise reduction effect of the silencer, which in turn leads to a degradation of user experience. Summary of the invention

[0003] In view of the above problems, the present invention is proposed to provide a silencer device and a refrigeration and freezing device that overcome the above problems or at least partially solve the above problems, aiming to solve the problem that the existing silencer device has poor noise reduction effect and achieve the purpose of improving user experience.

[0004] In one aspect, the present invention provides a silencing device, comprising:

[0005] A muffler body, wherein a through hole is formed on the muffler body and passes through two opposite side walls horizontally, and sound absorption holes are formed on the hole walls of the through hole, wherein at least one sound absorption hole with an opening facing downward is recorded as a first sound absorption hole, and at least one sound absorption hole with an opening facing upward is recorded as a second sound absorption hole;

[0006] The muffler body is also provided with a muffler cavity around the through hole and in communication with the sound absorbing hole, wherein the muffler cavity in communication with the first sound absorbing hole is referred to as a first muffler cavity, and the muffler cavity in communication with the second sound absorbing hole is referred to as a second muffler cavity; and

[0007] The length of the first muffler chamber is greater than the length of the second muffler chamber.

[0008] Optionally, a diameter of the first sound absorbing hole is smaller than a diameter of the second sound absorbing hole.

[0009] Optionally, the number of the first sound absorption holes is greater than the number of the second sound absorption holes.

[0010] Optionally, there are more than two first muffler cavities, and at least two of the first muffler cavities have different lengths;

[0011] There are more than two second muffler chambers, and at least two of the second muffler chambers have different lengths.

[0012] There are more than two first sound absorbing holes, and at least two of the first sound absorbing holes have different apertures;

[0013] There are more than two second sound absorbing holes, and at least two of the second sound absorbing holes have different apertures;

[0014] Optionally, two adjacent muffler cavities are separated by a partition;

[0015] Some of the partitions are provided with openings to connect the corresponding two muffler chambers.

[0016] Optionally, the opening is provided on the partition between the adjacent first muffler chamber and the second muffler chamber.

[0017] Optionally, the opening is located at or near the tail of the second muffler chamber.

[0018] Optionally, at least one of the muffler chambers has a labyrinth structure;

[0019] The labyrinth structure is a linear labyrinth structure, a curved labyrinth structure or an irregular labyrinth structure.

[0020] Optionally, the sound-absorbing body is a sound-absorbing metamaterial.

[0021] On the other hand, the present invention also provides a refrigeration and freezing device, comprising: a box body, a compressor compartment is provided in the box body, and a silencer as described in any one of the above items is also provided in the box body, and a through hole of the silencer device is connected to the inner side of the compressor compartment.

[0022] In the silencer device of the present invention, on the one hand, the length of the first silencer chamber is greater than that of the second silencer chamber; therefore, based on the mechanism that the wavelength of low-frequency sound waves is longer than that of high-frequency sound waves, the first silencer chamber is mainly used to reduce the noise of low-frequency sound waves, and the second silencer chamber is mainly used to reduce the noise of high-frequency sound waves. That is to say, the silencer device of the present invention can be used for both low-frequency noise reduction and high-frequency noise reduction. The silencer device has a wide operating frequency band, a broadband noise reduction effect and a good noise reduction effect, thereby being able to effectively reduce the noise of the compressor compartment, and then effectively reduce the noise of the refrigerator, thereby improving the user experience.

[0023] On the other hand, since the opening of the first sound absorption hole connected to the first muffler chamber faces downward, and the opening of the second sound absorption hole connected to the second muffler chamber faces upward. When in use, dust is not easy to enter the first muffler chamber, and the effect of dust on the first muffler chamber is relatively small. In addition, since the main frequency of the compressor chamber is low-frequency noise, even if dust enters the second muffler chamber, it will not have a significant impact on the noise reduction of the compressor. Therefore, the present invention reduces the effect of dust on the noise reduction effect of the compressor chamber. In addition, since the length of the second muffler chamber is relatively short, it is relatively easy to clean and dust the second muffler chamber; therefore, the present invention can minimize the effect of dust on the noise reduction effect during use, so that the muffler device of the present invention has a good noise reduction effect.

[0024] In addition, the present invention provides a design criterion for a silencer device, which facilitates the design and production of the silencer device.

[0025] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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:

[0027] Figure 1 is a schematic structural diagram of a muffler according to one embodiment of the present invention;

[0028] Figure 2 is a schematic structural diagram of a muffler chamber according to one embodiment of the present invention;

[0029] Figure 3 is a schematic structural diagram of a muffler chamber according to one embodiment of the present invention;

[0030] Figure 4 is a schematic structural diagram of a muffler chamber according to one embodiment of the present invention;

[0031] Figure 5 is a schematic structural diagram of a muffler chamber according to one embodiment of the present invention;

[0032] Figure 6 is a schematic structural diagram of a first body according to an embodiment of the present invention;

[0033] Figure 7 is a schematic structural diagram of a second body according to an embodiment of the present invention;

[0034] Figure 8is a schematic structural diagram of a muffler according to one embodiment of the present invention;

[0035] Fig. 9 yes Figure 8 AA section view;

[0036] Fig.10 is a schematic structural diagram of a refrigeration and freezing device according to one embodiment of the present invention;

[0037] Fig.11 is a schematic structural diagram of a refrigeration and freezing device according to one embodiment of the present invention;

[0038] Fig.12 is a schematic structural diagram of a compressor compartment according to one embodiment of the present invention. DETAILED DESCRIPTION

[0039] Refer to the following Figures 1 to 12 To describe the silencer and refrigeration and freezing device of the embodiment of the present invention. 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 invention, the meaning of "plurality" 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.

[0040] Unless otherwise clearly defined 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 skilled in the art should be able to understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0041] 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.

[0042] 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 present invention. 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.

[0043] Figure 1 is a schematic structural diagram of the silencing device 100, such as Figure 1 As shown, and refer to Figures 2 to 9 , an embodiment of the present invention provides a silencing device 100. The silencing device 100 includes a silencing body.

[0044] A through hole 101 is formed on the muffler body and passes through two opposite side walls horizontally. Sound absorbing holes 102 are formed on the hole wall of the through hole 101. At least one sound absorbing hole 102 opening downward is recorded as a first sound absorbing hole 1021, and at least one sound absorbing hole 102 opening upward is recorded as a second sound absorbing hole 1022.

[0045] A muffler cavity 103 communicating with the sound absorbing hole 102 is also formed on the muffler body around the through hole 101 , wherein the muffler cavity communicating with the first sound absorbing hole 1021 is recorded as a first muffler cavity 1031 , and the muffler cavity 103 communicating with the second sound absorbing hole 1022 is recorded as a second muffler cavity 1032 .

[0046] The length of the first muffler chamber 1031 is greater than the length of the second muffler chamber 1032 .

[0047] When in use, the silencer 100 is installed on the wall of the compressor compartment 300 of the refrigerator. The 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 silencer cavity 103 through the through hole 101 and the sound absorption hole 102 of the silencer 100. Under the silencer effect of the silencer cavity 103, the noise is significantly reduced.

[0048] In this embodiment, on the one hand, since the silencer chamber 103 includes the first silencer chamber 1031 and the second silencer chamber 1032, the length of the first silencer chamber 1031 is greater than the length of the second silencer chamber 1032; therefore, based on the mechanism that the wavelength of low-frequency sound waves is longer than that of high-frequency sound waves, the first silencer chamber 1031 is mainly used to reduce the noise of low-frequency sound waves, and the second silencer chamber 1032 is mainly used to reduce the noise of high-frequency sound waves. That is to say, the silencer device 100 of the present invention can be used for both low-frequency noise reduction and high-frequency noise reduction. The silencer device 100 has a wide operating frequency band, a broadband noise reduction effect and a good noise reduction effect, so that the compressor compartment 300 can be effectively noise-reduced, and then the refrigerator can be effectively noise-reduced, thereby improving the user experience.

[0049] On the other hand, since the opening of the first sound absorption hole 1021 connected to the first muffler chamber 1031 faces downward, and the opening of the second sound absorption hole 1022 connected to the second muffler chamber 1032 faces upward. When in use, dust is not easy to enter the first muffler chamber 1031, and the dust has little effect on the first muffler chamber 1031. In addition, since the main frequency of the compressor chamber 300 is low-frequency noise, even if dust enters the second muffler chamber 1032, it will not have a significant impact on the noise reduction of the compressor. Therefore, the present invention reduces the impact of dust on the noise reduction effect of the compressor chamber 300. In addition, since the length of the second muffler chamber 1032 is relatively short, it is relatively easy to clean and dust the second muffler chamber 1032; therefore, the present invention can minimize the impact of dust on the noise reduction effect during use, so that the muffler device 100 of the present invention has a good noise reduction effect.

[0050] In addition, the present invention provides a design guideline for the silencer 100, which facilitates the design and production of the silencer.

[0051] like Figure 2 As shown, in some embodiments of the present invention, the aperture of the first sound absorption hole 1021 is smaller than the aperture of the second sound absorption hole 1022 .

[0052] In this embodiment, on the one hand, since the first sound absorption hole 1021 is mainly used to reduce the noise of low-frequency sound waves, and the second sound absorption hole 1022 is mainly used to reduce the noise of high-frequency sound waves, the aperture of the first sound absorption hole 1021 is smaller than the aperture of the second sound absorption hole 1022, which is more conducive to improving the noise reduction effect of the first sound absorption hole 1021 on low-frequency sound waves, and more conducive to improving the noise reduction effect of the second sound absorption hole 1022 on high-frequency sound waves, thereby improving the noise reduction effect on the compressor compartment 300, and then improving the noise reduction effect on the refrigerator, so as to further improve the user experience. On the other hand, since the aperture of the first sound absorption hole 1021 is smaller than the aperture of the second sound absorption hole 1022, it is more conducive to dust removal and cleaning of the second sound absorption hole 1022 and the second muffler cavity 1032 with the opening facing upward.

[0053] In some embodiments of the present invention, the first sound absorption hole 1021 is equal to the second sound absorption hole 1022 .

[0054] In some embodiments of the present invention, the first sound absorption hole 1021 is larger than the second sound absorption hole 1022 .

[0055] like Figure 2 As shown, in some embodiments of the present invention, the number of the first sound absorption holes 1021 is greater than the number of the second sound absorption holes 1022 .

[0056] In this embodiment, since the number of the first sound absorption holes 1021 is greater than the number of the second sound absorption holes 1022, the number of the first muffler chambers 1031 is greater than the number of the second muffler chambers 1032. In addition, since the noise of the compressor compartment 300 is only low-frequency noise, the present invention is more conducive to the muffler device 100 to reduce the noise of low-frequency sound waves, thereby being more conducive to improving the noise reduction effect on the compressor compartment 300, and further improving the noise reduction effect on the refrigerator.

[0057] In some embodiments of the present invention, the number of the first sound absorption holes 1021 is equal to the number of the second sound absorption holes 1022 .

[0058] In some embodiments of the present invention, the number of the first sound absorption holes 1021 is less than the number of the second sound absorption holes 1022 .

[0059] like Figure 2-5 As shown, in some embodiments of the present invention, there are more than two first muffler cavities 1031, and at least two first muffler cavities 1031 have different lengths.

[0060] In this embodiment, since the lengths of at least two first muffler cavities 1031 are different, and the length of the first muffler cavity 1031 is the main factor determining the noise reduction frequency and affecting the noise reduction effect; therefore, the present invention is more conducive to broadband noise reduction.

[0061] like Figure 2-5As shown, in some embodiments of the present invention, there are more than two second muffler cavities 1032, and at least two second muffler cavities 1032 have different lengths.

[0062] In this embodiment, since the lengths of at least two second muffler cavities 1032 are different and the length of the second muffler cavity 1032 is the main factor determining the noise reduction frequency and affecting the noise reduction effect, this embodiment is more conducive to broadband noise reduction.

[0063] like Figure 2-5 As shown, in some embodiments of the present invention, there are more than two first sound absorption holes 1021, and at least two first sound absorption holes 1021 have different apertures.

[0064] In this embodiment, since the apertures of at least two first sound absorbing holes 1021 are different, the apertures of the first sound absorbing holes 1021 are the main factors that determine the noise reduction frequency and affect the noise reduction effect. Therefore, this embodiment is more conducive to broadband noise reduction.

[0065] like Figure 2-5 As shown, in some embodiments of the present invention, there are more than two second sound absorption holes 1022, and at least two second sound absorption holes 1022 have different apertures.

[0066] In this embodiment, since the apertures of at least two second sound absorbing holes 1022 are different, the apertures of the second sound absorbing holes 1022 are the main factors that determine the noise reduction frequency and affect the noise reduction effect. Therefore, this embodiment is more conducive to broadband noise reduction.

[0067] In some embodiments of the present invention, the number of the first sound absorption hole 1021 is one, and the number of the second sound absorption hole 1022 is one. The number of the first muffler cavity 1031 is one, and the number of the second muffler cavity 1032 is one.

[0068] In some embodiments of the present invention, each first sound absorption hole 1021 is connected to a first sound absorption cavity 1031 , and each second sound absorption hole 1022 is connected to a second sound absorption cavity 1032 .

[0069] In some embodiments of the present invention, each first sound absorption hole 1021 is connected to two or more first sound absorption cavities 1031 , and each second sound absorption hole 1022 is connected to two or more second sound absorption cavities 1032 .

[0070] like Figure 3-5 As shown, in some embodiments of the present invention, two adjacent muffler cavities 103 are separated by a partition 112 ; openings 104 are provided on some of the partitions 112 to connect the two corresponding muffler cavities 103 .

[0071] In this embodiment, by providing the opening 104 on the partition 112 , the size of the muffler cavity 103 can be changed, so that the muffler device 100 has more muffler cavities 103 of different sizes, which is more conducive to broadband noise reduction.

[0072] like Figure 3-5 As shown, further, in some embodiments of the present invention, the opening 104 is disposed on the partition 112 between the adjacent first muffler cavity 1031 and the second muffler cavity 1032 .

[0073] In this embodiment, by setting an opening 104 on the partition 112 between the adjacent first silencer chamber 1031 and the second silencer chamber 1032, the first silencer chamber 1031 and the second silencer chamber 1032 can be connected, thereby extending the length of the first silencer chamber 1031, which is beneficial to increasing the effect of low-frequency noise reduction, thereby being more beneficial to reducing the noise of the compressor compartment 300, and further being more beneficial to reducing the noise of the refrigerator, further enhancing the user experience.

[0074] like Figure 3-4 As shown, further, in some embodiments of the present invention, the opening 104 is located at the tail of the second muffler cavity 1032 .

[0075] In this embodiment, the opening 104 is located at the tail of the second muffler cavity 1032, which is more advantageous for increasing the length of the first muffler cavity 1031, thereby being more advantageous for low-frequency noise reduction.

[0076] In other embodiments of the present invention, the opening 104 is close to the rear end of the second muffler chamber 1032 .

[0077] In other embodiments of the present invention, the opening 104 is away from the rear end of the second muffler chamber 1032 .

[0078] In some embodiments of the present invention, the number of the opening 104 is one, that is, the opening 104 is only provided on the partition 112 between a group of adjacent first muffler cavities 1031 and second muffler cavities 1032 .

[0079] like Figure 4-5 As shown, in some embodiments of the present invention, the number of the openings 104 is at least two.

[0080] That is, the openings 104 are only provided on the partition 112 between at least two adjacent first muffler cavities 1031 and second muffler cavities 1032. For example, the number of the openings 104 is two, three or four, and the specific number of the openings 104 can be designed as required.

[0081] In this embodiment, the positions of the openings 104 can be one of the following: ① Each opening 104 is located at the tail of the corresponding second muffler cavity 1032. ② Each opening 104 is close to the tail of the corresponding second muffler cavity 1032. ③ Figure 5 As shown, one portion of the opening 104 is located at or near the tail of the corresponding second muffler cavity 1032, and the other portion of the opening 104 is away from the tail of the corresponding muffler cavity 103. Each opening 104 is located at the tail of the corresponding second muffler cavity 1032, which is more conducive to increasing the length of the corresponding first muffler cavity 1031, thereby being more conducive to low-frequency noise reduction.

[0082] like Figure 2-5 As shown, in some embodiments of the present invention, at least one muffler cavity 103 has a labyrinth structure.

[0083] In this embodiment, compared with the sound flow structure, honeycomb structure or straight tube structure of the silencer cavity 103, the labyrinth structure can arrange as many silencer cavities 103 as possible, and the depth of the silencer cavity 103 is deeper, which can significantly extend the sound propagation path, forming an acoustic super structure, thereby further improving the noise reduction effect of the silencer device 100.

[0084] In some other optional embodiments of the present invention, at least one of the muffler chambers 103 is an acoustic flow structure.

[0085] In other embodiments of the present invention, at least one of the muffler chambers 103 has a honeycomb structure.

[0086] In other embodiments of the present invention, at least one of the muffler chambers 103 is a straight tube structure.

[0087] In some embodiments of the present invention, at least one muffler cavity 103 is in a maze structure. The maze structure is a straight maze structure. In this embodiment, compared with the curved and irregular maze structures, the straight maze structure is easier to manufacture and has a lower production body.

[0088] In some embodiments of the present invention, at least one muffler cavity 103 is in a labyrinth structure. The labyrinth structure is a curved labyrinth structure.

[0089] In some embodiments of the present invention, at least one muffler cavity 103 is in a labyrinth structure. The labyrinth structure is an irregular labyrinth structure.

[0090] In some embodiments of the present invention, the sound-absorbing body is a sound-absorbing metamaterial.

[0091] 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.

[0092] In some alternative embodiments of the present invention, the silencer body is made of ABS material.

[0093] In some optional embodiments of the present invention, the diameter of the through hole 101 is 10-200 mm.

[0094] For example, the diameter of the through hole 101 is 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 80 mm, 100 mm, 120 mm, 150 mm, 180 mm or 200 mm.

[0095] Specifically, since the through hole 101 on the muffler body can be used as both a sound inlet and a heat dissipation hole, a large aperture of the through hole 101 is beneficial to heat dissipation, but a large aperture will result in a decrease in noise reduction; a small aperture of the through hole 101 is beneficial to noise reduction, but the heat dissipation will decrease. Therefore, in this embodiment, by setting the aperture of the through hole 101 to a reasonable size, the muffler device 100 can have both a good noise reduction effect and a good heat dissipation effect.

[0096] In some embodiments of the present invention, the muffler body is an irregular trapezoid, and the cross-sectional size of the muffler body is about 180 mm*180 mm.

[0097] In some embodiments of the present invention, the through hole 101 is a circular hole.

[0098] In some alternative embodiments of the present invention, the through hole 101 is a square hole, a triangular hole, or a hole of other shapes.

[0099] like Figure 6-9 As shown, in some embodiments of the present invention, the muffler body is a split structure, and the muffler body is divided into a first body 110 and a second body 120 along its thickness direction, and the muffler cavity 103 is enclosed by the first body 110 and the second body 120.

[0100] During the manufacturing process, the first body 110 and the second body 120 are manufactured separately; after the first body 110 and the second body 120 are manufactured respectively, the first body 110 and the second body 120 are assembled together to form the silencer 100. During the separate manufacturing process, it is convenient to design a plurality of silencer cavities 103 of different lengths, widths and heights according to the noise reduction requirements, so that the silencer cavities 103 of different sizes correspond to different noise reduction pressure bands, so that the silencer 100 can have a better noise reduction effect.

[0101] In this embodiment, since the muffler body is a split structure, the production and preparation of the first body 110 and the second body 120 are convenient, and the difficulty of production and processing is reduced. Therefore, the muffler body of the present invention is convenient to manufacture and assemble, thereby simplifying the manufacturing process of the refrigeration and freezing device and saving production costs; in addition, it is convenient to set a plurality of muffler cavities 103 of different sizes inside the muffler body, which is more conducive to absorbing noises of different frequencies.

[0102] like Figure 7-9 As shown, in some embodiments of the present invention, the first body 110 includes a first side panel 111, a peripheral wall 113 and a muffler chamber partition 112 located on the first side panel 111; the second body 120 includes a second side panel 121 and a slot 122 located on the second side panel 121 and plugged into the muffler chamber partition 112. The first side panel 111, the muffler chamber partition 112, the peripheral wall 113 and the second side panel 121 together enclose a through hole 101 and a muffler chamber 103.

[0103] During the manufacturing and assembly process, the first body 110 and the second body 120 are first manufactured separately, and then the two are assembled together. Specifically, the muffler cavity partition 112 of the first body 110 is inserted into the slot 122 of the second body 120, and the peripheral wall 113 of the first body 110 is in contact with the second side plate 121 of the second body 120, so that the first body 110 and the second body 120 are enclosed together to form the through hole 101 and the muffler cavity 103.

[0104] In this embodiment, since the silencer cavity partition 112 is inserted into the slot 122, on the one hand, each silencer cavity 103 can be a closed cavity, thereby improving the sealing effect and noise reduction effect of each silencer cavity 103; on the other hand, it can also play a positioning role, thereby improving the assembly efficiency of the first body 110 and the second body 120.

[0105] like Fig. 9 As shown, further, in some embodiments of the present invention, the muffler cavity partition 112 is perpendicular to the first side plate 111 to facilitate production.

[0106] like Fig.11As shown, further, the peripheral wall 113 is perpendicular to the first side plate 111, so that the silencer 100 has a beautiful appearance and is easy to manufacture.

[0107] like Figure 7 and Fig. 9 As shown, in some embodiments of the present invention, a convex strip 123 forming a slot 122 is disposed on the second side plate 121. In some alternative embodiments of the present invention, a concave portion forming the slot 122 is provided on the surface of the first side wall.

[0108] In this embodiment, since the slot 122 is composed of the convex strips 123, the depth of the slot 122 can be increased, thereby increasing the size of the portion of the muffler cavity partition 112 inserted into the slot 122, thereby further improving the sealing effect and noise reduction effect of each muffler cavity 103.

[0109] like Fig. 9 As shown, in some embodiments of the present invention, there is a gap between the two side walls of the slot 122 and the corresponding muffler cavity partition 112 .

[0110] In this embodiment, since the slot 122 and the muffler cavity partition 112 are clearance-matched, the slot 122 can be easily inserted into place, and the sealing of the muffler cavity 103 can be further improved, so that it has a better noise reduction effect.

[0111] In some embodiments of the present invention, an edge of the peripheral wall 113 away from the first side plate 111 is welded to the second side plate 121 .

[0112] During the manufacturing and assembly process, the muffler cavity partition 112 of the first body 110 is inserted into the slot 122 of the second body 120, and the peripheral wall 113 of the first body 110 is in contact with the second side plate 121 of the second body 120, and then the connection position between the peripheral wall 113 and the second side plate 121 is welded to fix the two together.

[0113] In this embodiment, the welding method can improve the sealing performance of the silencer 100 compared with the fastening connection or the clamping method, so that the silencer 100 can have a better noise reduction effect.

[0114] Furthermore, in some embodiments of the present invention, the type of welding is vibration friction welding.

[0115] Specifically, the edge of the peripheral wall 113 away from the first side plate 111 is fixedly connected to the second side plate 121 by means of vibration friction welding. Vibration friction welding is a technology that uses the heat generated by interface friction caused by the relative vibration of two welds to achieve welding. The welds are placed on a specified device and vibrate and rub on the contact surface under a certain pressure until the interface begins to melt. Then the vibration is stopped and the pressure is maintained until solidification, thereby achieving the welding purpose. By using the vibration friction welding method, the connection strength between the peripheral wall 113 and the second side plate 121 can be improved, and the welding speed can also be increased. In addition, no welding smoke and pollutants such as manganese and nickel that are harmful to the human body are generated during the welding process.

[0116] In other embodiments of the present invention, the type of welding is ultrasonic welding.

[0117] Specifically, the edge of the peripheral wall 113 away from the first side plate 111 is fixedly connected to the second side plate 121 by ultrasonic welding. Compared with the traditional welding method, ultrasonic welding has significant advantages, such as fast welding speed, high welding efficiency, good weld quality, beautiful weld, clean and environmentally friendly welding process, and is very suitable for mass production. Therefore, ultrasonic welding is a fast, clean and effective assembly process.

[0118] In some embodiments of the present invention, the outer contour of the second side plate 121 is larger than the outer contour of the peripheral wall 113 so that the weld or the solder does not extend beyond the second body 120 after welding.

[0119] In this embodiment, since the outer contour of the second side plate 121 is larger than the outer contour of the peripheral wall 113, after welding, the weld or solder between the two will not be at the outermost edge of the silencer 100, thereby making the appearance of the silencer 100 more beautiful.

[0120] In some alternative embodiments of the present invention, the outer contour of the second side plate 121 is equal to the outer contour of the peripheral wall 113 .

[0121] In some alternative embodiments of the present invention, the fixed connection between the peripheral wall 113 and the second side plate 121 is a fastening connection. For example, connection holes are provided on the edges of the second side plate 121 and the peripheral wall 113 away from the first side plate 111; the muffler cavity partition 112 of the first body 110 is inserted into the slot 122 of the second body 120, and the peripheral wall 113 of the first body 110 is in contact with the second side plate 121 of the second body 120, and then screws are inserted into the connection holes, and the first body 110 and the second body 120 are fastened together by the screws. This fastening connection method has the advantages of easy operation and high assembly efficiency.

[0122] In some other alternative embodiments of the present invention, the fixed connection between the peripheral wall 113 and the second side plate 121 is achieved by snap-fitting.

[0123] In some optional embodiments of the present invention, an installation and assembly interface 130 for installing a ventilation grille is provided at the through hole 101. In this embodiment, the installation and assembly interface 130 is a snap-on structure, and the installation and assembly interface 130 is consistent with the existing interface, and is used to install the ventilation grille, thereby improving versatility and practicality, reducing costs, and can be used for different types and models of refrigeration and freezing devices.

[0124] like Figure 10-11 As shown, the present invention also provides a refrigeration and freezing device, which includes a box body 200, in which a compressor compartment 300 is provided, and a silencer 100 as described in any of the above embodiments is also provided in the box body 200, and a through hole 101 of the silencer 100 is connected to the inner side of the compressor compartment 300.

[0125] In some optional embodiments of the present invention, the silencer 100 is installed on the inner side of the warehouse wall of the compressor warehouse 300. A through hole corresponding to the through hole 101 is opened on the corresponding warehouse wall.

[0126] When in use, when the noise in the compressor compartment 300 propagates from the inside to the outside, it passes through the muffler body, and under the obstruction of the side wall of the muffler body, the noise enters the muffler cavity 103 through the through hole 101 and the sound absorption hole 102, thereby extending the propagation path of the sound. Under the muffler effect of the muffler cavity 103, the noise is significantly reduced. The heat in the compressor is transported to the outside of the compressor compartment 300 through the through hole 101 and the through hole.

[0127] In some other optional embodiments of the present invention, 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 through hole 101 is opened on the corresponding compartment wall.

[0128] When in use, when the noise in the compressor compartment 300 propagates from the inside to the outside, it enters the interior of the muffler chamber 103 through the through hole, the through hole 101 and the sound absorption hole 102, and the noise is significantly reduced under the muffler effect of the muffler chamber 103. The heat in the compressor is transported to the outside of the compressor compartment 300 through the through hole and the through hole 101. In addition, the muffler device 100 is installed in the foam layer around the compressor compartment 300, which does not occupy the volume of the refrigerator extra, that is, the volume of the refrigerator can be lost as little as possible, and the installation is stable and firm, impact-resistant, and meets the transportation test.

[0129] In some optional embodiments of the present invention, a through hole is provided on the warehouse wall for installing the silencer 100. Specifically, the silencer 100 is installed in the through hole.

[0130] In some embodiments of the present invention, a compressor 301 is provided in a compressor compartment 300, and the compressor compartment 300 includes a compartment wall, and silencers 100 are installed on the left and right walls of the compartment wall; the through holes 101 of the two silencers 100 are respectively a first through hole 1011 and a second through hole 1012, and the second through hole 1012 is lower than the first through hole 1011.

[0131] Specifically, the warehouse wall includes a front wall, a rear wall, a top wall, a bottom wall, a left wall and a right wall. The silencer 100 is installed on the left and right sides of the compressor warehouse 300; after the silencer 100 is installed to reduce noise, the compressor warehouse 300 is basically in a closed state, and only the silencers 100 on the left and right walls of the warehouse wall of the compressor warehouse 300 are provided with through holes 101 that can be used for ventilation, and other positions are basically closed except for screw holes or reserved holes on the rear wall and bottom wall of the warehouse wall of the compressor warehouse 300; therefore, when the compressor warehouse 300 is basically closed and there is no heat dissipation fan in the compressor warehouse 300, the heat is mainly dissipated by natural convection through the through holes 101 of the silencer 100 on the left and right sides of the compressor warehouse 300.

[0132] In this embodiment, on the one hand, since the through holes 101 of the two silencers 100 are asymmetrical structures; therefore, Fig.12 As shown, in the scenario where there is no heat dissipation fan in the compressor compartment 300 and natural convection occurs, the scenario includes the case where only a compressor is provided in the compressor compartment 300. When the compressor is working, based on the principle that the density of hot air is small and the density of cold air is large, and hot air will automatically rise, the high-temperature airflow in the compressor compartment 300 automatically flows upward and is discharged from the compressor compartment 300 through the first through hole 1011, and at the same time, negative pressure is generated at the bottom of the compressor compartment 300. Under the action of the atmospheric pressure outside the compressor compartment 300, the outside air enters the compressor compartment 300 through the through hole 101 at the lower position. In other words, the first through hole 1011 at the upper position is the airflow outlet, and the second through hole 1012 at the lower position is the airflow inlet, thereby forming an airflow that runs through the compressor compartment 300, so that the airflow can quickly flow through the compressor compartment 300, take away the heat in the compressor compartment 300, and have a good heat dissipation effect. In summary, compared with the symmetrical through holes 101 of the two silencers 100, the asymmetrical through holes 101 of the two silencers 100 can form a smooth air path for the heat flow lines in the compressor compartment 300 when there is no fan in the compressor compartment 300, thereby improving the heat dissipation efficiency of the compressor compartment 300 and further improving the service life of the compressor. Therefore, the present invention can effectively reduce the noise of the compressor compartment 300 and improve the sound quality, and can also effectively dissipate the heat of the compressor compartment 300 and improve the service life of the compressor.

[0133] like Fig.12 As shown, in some embodiments of the present invention, only a compressor 301 is provided in the compressor compartment 300 .

[0134] Furthermore, in some embodiments of the present invention, the central axis of the first through hole 1011 is located between the top of the compressor and the top wall of the chamber wall. In this embodiment, the above arrangement not only provides an accurate reference for the design and manufacture of the first through hole 1011, but also facilitates the manufacture and assembly of the silencer 100 on the air outlet side of the compressor chamber 300, and is more conducive to the discharge of high-temperature gas from the compressor chamber 300.

[0135] like Figure 4 As shown, in some embodiments of the present invention, the compressor includes an upper shell 3011 and a lower shell 3012, and a connecting area 3013 is provided between the upper shell 3011 and the lower shell 3012; the central axis of the second through hole 1012 is located between the connecting area 3013 and the bottom wall of the bin wall.

[0136] In this embodiment, since the central axis of the second through hole 1012 is located between the connecting area 3013 and the bottom wall of the bin wall, on the one hand, there is a larger height difference between the first through hole 1011 and the second through hole 1012, which is more conducive to the entry of cold air into the compressor bin 300 and can extend the flow path of the airflow in the compressor bin 300, so that the compressor bin 300 has a better heat dissipation effect; on the other hand, it provides a more precise benchmark for the design and manufacture of the second through hole 1012, which is more convenient for the manufacture and assembly of the silencer 100 on the air inlet side of the compressor bin 300, and can improve the manufacturing accuracy and production efficiency.

[0137] In some embodiments of the present invention, the connection area 3013 between the upper shell 3011 and the lower shell 3012 is a welding area, that is, the upper shell 3011 and the lower shell 3012 are welded together.

[0138] In some embodiments of the present invention, the horizontal distance between the first through hole 1011 and the compressor is smaller than the horizontal distance between the second through hole 1012 and the compressor.

[0139] In this embodiment, since the compressor is located close to the first through hole 1011 (ie, the air flow outlet), it is more conducive to the high-temperature air flow to be quickly discharged from the compressor compartment 300, thereby further improving the heat dissipation effect.

[0140] In some embodiments of the present invention, a compressor 301 and a heat dissipation fan are disposed in the compressor compartment 300 .

[0141] In some embodiments of the present invention, a compressor 301 , a heat dissipation fan and a condenser are disposed in the compressor compartment 300 .

[0142] In some optional embodiments of the present invention, the refrigerating and freezing device is a refrigerator.

[0143] A refrigeration system is arranged inside the refrigerator. The refrigeration system has a circulation circuit for circulating a refrigerant. The refrigeration system includes a compressor, a condenser, a throttling line and an evaporator connected in series in sequence, wherein at least the compressor is arranged in a compressor compartment, and the compressor compartment can be at any position of the refrigerator, such as the bottom, middle or top of the refrigerator.

[0144] Preferably, the compressor compartment is located at the bottom of the refrigerator, that is, the compressor compartment is located at the bottom of the box body.

[0145] In some other optional embodiments of the present invention, the refrigerating and freezing device is a freezer.

[0146] In the above embodiment, only the first sound absorption hole, the second sound absorption hole, the first sound absorption cavity, the second sound absorption cavity and their corresponding relationship are shown; however, the above embodiment does not mean that the muffler of the present invention cannot include sound absorption holes and sound absorption cavities other than the first sound absorption hole, the second sound absorption hole, the first sound absorption cavity and the second sound absorption cavity, nor does it mean that the muffler of the present invention cannot include corresponding connection relationships other than the above corresponding relationships, such as sound absorption holes with an opening direction facing the horizontal direction, a sound absorption cavity not connected to any sound absorption hole, a third sound absorption cavity connected to the first sound absorption hole and having a length not less than the first sound absorption cavity, a fourth sound absorption cavity connected to the second sound absorption hole and having a length not greater than the second sound absorption cavity, a fifth sound absorption cavity connected to the first sound absorption hole or the second sound absorption hole and having a length between the first sound absorption cavity and the second sound absorption cavity, and the like. That is, as long as the silencer device includes the first sound absorption hole, the second sound absorption hole, the first sound absorption cavity, the second sound absorption cavity and their corresponding relationship described in the above embodiment, even if there are some structures in the silencer device that are contrary to or unrelated to the inventive concept of the above structure, it still does not affect the protection of the technical solutions in the above embodiment and the substantially identical technical solutions.

[0147] 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 based on the content 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 these other variations or modifications.

Claims

1. A silencing device, characterized in that: include: A muffler body, wherein a through hole is formed on the muffler body and passes through two opposite side walls horizontally, and sound absorption holes are formed on the hole walls of the through hole, wherein at least one sound absorption hole with an opening facing downward is recorded as a first sound absorption hole, and at least one sound absorption hole with an opening facing upward is recorded as a second sound absorption hole; The muffler body is also provided with a muffler cavity around the through hole and in communication with the sound absorbing hole, wherein the muffler cavity in communication with the first sound absorbing hole is referred to as a first muffler cavity, and the muffler cavity in communication with the second sound absorbing hole is referred to as a second muffler cavity; and The length of the first muffler chamber is greater than the length of the second muffler chamber.

2. The silencing device according to claim 1, characterized in that: The aperture of the first sound absorbing hole is smaller than the aperture of the second sound absorbing hole.

3. The silencing device according to claim 1, characterized in that: The number of the first sound absorbing holes is greater than the number of the second sound absorbing holes.

4. The silencing device according to claim 1, characterized in that: There are more than two first muffler cavities, and at least two of the first muffler cavities have different lengths; There are more than two second muffler cavities, and at least two of the second muffler cavities have different lengths; There are more than two first sound absorbing holes, and at least two of the first sound absorbing holes have different apertures; There are more than two second sound absorbing holes, and at least two of the second sound absorbing holes have different apertures.

5. The silencing device according to claim 1, characterized in that: Two adjacent muffler cavities are separated by a partition; Some of the partitions are provided with openings to connect the corresponding two muffler chambers.

6. The silencing device according to claim 5, characterized in that: The opening is disposed on the partition between the adjacent first muffler chamber and the second muffler chamber.

7. The silencing device according to claim 6, characterized in that: The opening is located at or near the rear of the second muffler chamber.

8. The silencing device according to claim 1, characterized in that: At least one of the muffler chambers has a labyrinth structure; The labyrinth structure is a linear labyrinth structure, a curved labyrinth structure or an irregular labyrinth structure.

9. The silencing device according to claim 1, characterized in that: The sound-absorbing body is a sound-absorbing metamaterial.

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

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