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 penetrating through the silencing body is formed in the side wall of the silencing body, the hole diameter phi of the through hole is equal to nP, n is a preset coefficient, and P is the stable power of the compressor. In the silencing device, a calculation formula of the aperture size of the through hole of the silencing device is provided, the calculation formula can be used as a design standard of the aperture size of the through hole of the silencing device, and the calculation mode can be suitable for various freezing and refrigerating devices of different models. The aperture of the through hole of the silencing device is designed according to the stable power of the compressor, so that the silencing device can simultaneously take heat dissipation and noise reduction into consideration, and the use experience of a user can be improved.

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, refrigerator abnormal noise frequently occurs in the compressor compartment, which seriously affects the noise quality of the refrigerator. In the prior art, a silencer is usually set at the ventilation windows on the left and right sides of the compressor compartment to reduce the noise of the compressor compartment. A through hole is provided on the side wall of the silencer, a silencer cavity is provided inside the silencer body, and a sound absorption hole connected to the silencer cavity is provided on the peripheral wall of the through hole. Since the heat dissipation of the compressor compartment is serious, it affects the energy consumption of the refrigerator. When there is no fan in the compressor compartment, the heat dissipation of the compressor compartment is completely natural convection. That is to say, after the noise reduction device is installed, the compressor compartment is basically in a closed state, and the heat dissipation is mainly natural convection through the through holes on the left and right sides of the compressor compartment. The aperture size of the through hole determines the effect of noise reduction and heat dissipation. If the aperture is too large, the noise reduction is small, and if the aperture is too small, the heat dissipation is small. However, there is no corresponding design standard for the aperture of the through hole of the silencer in the prior art, which results in the silencer not being able to take into account both heat dissipation and noise reduction at the same time, thereby degrading the user experience. Summary of the invention

[0003] In view of the above problems, the present invention is proposed to provide a sound absorbing 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 cannot take into account both heat dissipation and noise reduction at the same time, so as to achieve the purpose of improving user experience.

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

[0005] The muffler body has a through hole penetrating the muffler body on its side wall, the aperture of the through hole is Φ=nP, n is a preset coefficient, and P is the stable power of the compressor.

[0006] Optionally, the preset coefficient is 0.2-0.6.

[0007] Optionally, at least one muffler cavity is provided inside the muffler body, at least one sound absorption hole is opened on the peripheral wall of the through hole, and each of the sound absorption holes is connected to at least one muffler cavity;

[0008] The muffler body is a split structure, and is divided into a first body and a second body along its thickness direction, and the muffler cavity is formed by enclosing the first body and the second body.

[0009] Optionally, the first body includes a first side plate, a peripheral wall, and a muffler cavity partition located on the first side plate;

[0010] The second body includes a second side plate and a slot located on the second side plate and plugged into the muffler chamber partition. The first side plate, the muffler chamber partition, the peripheral wall and the second side plate together enclose the through hole and the muffler chamber.

[0011] Optionally, an edge of the peripheral wall away from the first side plate is welded to the second side plate;

[0012] The type of welding is vibration friction welding or ultrasonic welding.

[0013] Optionally, the sound-absorbing body is a sound-absorbing metamaterial.

[0014] In another aspect, the present invention further provides a refrigeration and freezing device, comprising:

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

[0016] Optionally, the silencer is installed on the inner side of the compressor compartment wall; or, the silencer is installed on the outer side of the compressor compartment wall, and the corresponding compartment wall is provided with a through hole corresponding to the through hole.

[0017] Optionally, the compressor compartment includes a compartment wall, and the silencer is installed on the left wall and the right wall of the compartment wall, and the through holes of the two silencers are staggered up and down, or the through holes of the two silencers are coaxially arranged.

[0018] Optionally, when the through holes of the two silencers are staggered up and down, the preset coefficient is a first preset coefficient;

[0019] When the through holes of the two mufflers are coaxially arranged, the preset coefficient is a second preset coefficient;

[0020] The second preset coefficient is less than or equal to the first preset coefficient.

[0021] In the silencer of the present invention, a calculation formula for the aperture size of the through hole of the silencer is provided, which can be used as a design standard for the aperture size of the through hole of the silencer, and the calculation method can be applied to a variety of different types of refrigeration and freezing devices. Since the aperture of the through hole of the silencer is designed according to the stable power of the compressor, the silencer can take into account both heat dissipation and noise reduction, thereby improving the user experience.

[0022] 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

[0023] 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:

[0024] Figure 1 is a schematic structural diagram of a muffler according to one embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of a first body according to an embodiment of the present invention;

[0026] Figure 3 is a schematic structural diagram of a second body according to an embodiment of the present invention;

[0027] Figure 4 is a schematic structural diagram of a muffler according to one embodiment of the present invention;

[0028] Figure 5 yes Figure 4 AA section view;

[0029] Figure 6 is a schematic structural diagram of a refrigeration and freezing device according to one embodiment of the present invention;

[0030] Figure 7 is a schematic structural diagram of a compressor compartment according to one embodiment of the present invention;

[0031] Figure 8 is a schematic airflow distribution diagram of a compressor compartment according to one embodiment of the present invention;

[0032] Fig. 9 is a schematic structural diagram of a compressor compartment according to another embodiment of the present invention;

[0033] Fig.10 is a schematic airflow distribution diagram of a compressor compartment according to another embodiment of the present invention. DETAILED DESCRIPTION

[0034] Refer to the following Figures 1 to 10To describe the sound absorbing device and the 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 used for descriptive purposes only, 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 "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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] Figure 1 is a schematic structural diagram of the silencing device 100, such as Figure 1 As shown, and refer to Figures 2 to 10 An embodiment of the present invention provides a silencer device 100, which can be used in a refrigeration and freezing device.

[0039] The muffler device 100 includes a muffler body, at least one muffler cavity 103 is provided inside the muffler body, a through hole 101 penetrating the muffler body is provided on the side wall of the muffler body, at least one sound absorbing hole 102 is provided on the peripheral wall 113 of the through hole 101, and each sound absorbing hole 102 is connected to at least one muffler cavity 103. The aperture Φ of the through hole 101 is nP, where n is a preset coefficient and P is the stable power of the compressor.

[0040] The working principle of the silencer 100 of the present invention is as follows: when in use, the silencer 100 can be placed inside or outside the compressor compartment 300 of the refrigerator, and the through hole 101 is connected to 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 passes through the silencer 100 inside or outside the compressor compartment 300. Under the obstruction of the side wall of the silencer body, the noise will enter the silencer cavity 103 through the through hole 101 and the sound absorption hole 102. Under the silencer effect of the silencer cavity 103, the noise is significantly reduced.

[0041] Specifically, on the one hand, the hole wall of the through hole 101 is a sound absorbing surface; on the other hand, the through hole 101 is a heat dissipation channel, which can transfer the heat in the compressor compartment 300 to the outside of the compressor to dissipate heat from the compressor compartment 300. The size of the heat dissipation channel affects the amount of heat dissipation. Figure 7-10 As shown, when there is no fan in the compressor compartment 300, the heat dissipation of the compressor compartment 300 is completely natural convection. When in use, the silencer 100 can be installed on the left and right sides of the compressor compartment 300; after the silencer 100 is installed to reduce noise, the compressor compartment 300 is basically in a closed state, and only the silencer 100 on the left and right walls of the compartment wall of the compressor compartment 300 is provided with a through hole 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 compartment wall of the compressor compartment 300; therefore, in this case, the heat dissipation is mainly natural convection through the through holes 101 of the silencer 100 on the left and right sides of the compressor compartment 300.

[0042] In this embodiment, the stable power of the compressor refers to the operating power of the compressor when it is working stably. For refrigerators of different models, the stable power of the compressors of different models is different; the greater the stable power of the compressor, the greater the noise and heat dissipation generated when the compressor is running stably. Therefore, the present invention designs the aperture size of the through hole 101 on the muffler body according to the stable power of the compressor.

[0043] In this embodiment, a calculation formula for the aperture size of the through hole 101 of the silencer 100 is provided, which can be used as a design standard for the aperture size of the through hole 101 of the silencer 100. The calculation method can be applied to a variety of different types of refrigeration and freezing devices. Since the aperture of the through hole 101 of the silencer 100 is designed according to the stable power of the compressor, the silencer 100 can take into account both heat dissipation and noise reduction, thereby improving the user experience.

[0044] In some optional embodiments of the present invention, the preset coefficient is 0.2-0.6.

[0045] For example: the preset coefficient is 0.2, 0.3, 0.4, 0.5 or 0.6.

[0046] like Figure 1-5 As shown, in some optional embodiments of the present invention, at least one silencer cavity 103 is provided inside the silencer body, and at least one sound absorption hole 102 is opened on the peripheral wall 113 of the through hole 101, and each of the sound absorption holes 102 is connected to at least one of the silencer cavities 103; the silencer body is a split structure, and the silencer body is divided into a first body 110 and a second body 120 along its thickness direction, and the silencer cavity 103 is enclosed by the first body 110 and the second body 120.

[0047] Specifically, 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 separately, 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 with 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.

[0048] 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 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 noise of different frequencies. In addition, since the muffler body has the muffler cavity 103, the through hole 101 and the sound absorption hole 102, the muffler body has the function of heat dissipation while absorbing and reducing noise.

[0049] like Figure 2-5As 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.

[0050] 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.

[0051] 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.

[0052] like Figure 5 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.

[0053] like Figure 5 As 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.

[0054] In some embodiments of the present invention, a convex strip 123 forming the 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 formed on the surface of the first side wall.

[0055] 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.

[0056] 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 .

[0057] 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.

[0058] 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 .

[0059] 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.

[0060] 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.

[0061] Furthermore, in some embodiments of the present invention, the type of welding is vibration friction welding.

[0062] 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.

[0063] In other embodiments of the present invention, the type of welding is ultrasonic welding.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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 .

[0068] 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.

[0069] 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.

[0070] In some optional embodiments of the present invention, at least one of the muffler chambers 103 has a labyrinth structure.

[0071] In this embodiment, compared with the sound-flow structure, honeycomb structure or straight tube structure of the silencer cavity 103, the labyrinth structure of the silencer cavity 103 is deeper, which can significantly extend the sound propagation path and constitute an acoustic superstructure, thereby further enhancing the noise reduction effect of the silencer device 100.

[0072] In some optional embodiments of the present invention, at least one of the muffler chambers 103 is an acoustic flow structure.

[0073] In some optional embodiments of the present invention, at least one of the muffler chambers 103 has a honeycomb structure.

[0074] In some optional embodiments of the present invention, at least one of the muffler chambers 103 is a straight tube structure.

[0075] In some optional embodiments of the present invention, the sound-absorbing body is a sound-absorbing metamaterial.

[0076] 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.

[0077] In some alternative embodiments of the present invention, the silencer body is made of ABS material.

[0078] In some optional embodiments of the present invention, the diameter of the through hole 101 is 10-200 mm.

[0079] 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.

[0080] 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.

[0081] In some optional embodiments of the present invention, a mounting interface 130 for mounting a ventilation grille is provided at the through hole 101. In this embodiment, the mounting interface 130 is a snap-on structure, which is consistent with the existing interface and is used to mount the ventilation grille, thereby improving versatility and practicality, reducing costs, and can be used for refrigerators of different categories and models.

[0082] like Figure 6 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 in which a silencer 100 as described in any of the above embodiments is also provided, and a through hole 101 of the silencer 100 is connected to the inner side of the compressor compartment 300.

[0083] In this embodiment, by installing the silencer 100 inside the refrigeration device, the noise inside the refrigeration device can be reduced, thereby improving the user experience. In addition, the present invention provides a calculation formula for the aperture size of the through hole 101 of the silencer 100, which can be used as a design standard for the aperture size of the through hole 101 of the silencer 100, and the calculation method can be applied to a variety of different models of refrigeration devices. Since the aperture of the through hole 101 of the silencer 100 is designed according to the stable power of the compressor, the silencer 100 can take into account both heat dissipation and noise reduction, thereby improving the user experience.

[0084] In some optional embodiments of the present invention, the muffler 100 is installed on the inner side of the compartment wall of the compressor compartment 300. A through hole corresponding to the through hole 101 is opened on the corresponding compartment wall.

[0085] 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.

[0086] 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 the compartment wall is provided with a through hole corresponding to the through hole 101 .

[0087] 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, the through hole 101 and the sound absorption hole 102. 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 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.

[0088] In some embodiments of the present invention, the refrigerator and freezer further comprises a ventilation grille, which is installed at one end of the through hole 101 away from the compressor compartment 300. Further, the ventilation grille is located outside the compressor compartment 300.

[0089] In order to facilitate the installation of the ventilation grille and meet the universal requirements, the ventilation grille is installed on the end of the through hole 101 away from the compressor compartment 300 through a snap-on structure. The snap-on structure includes a snap-on hole strip, a snap-on protrusion and a snap buckle. The two ends of the snap-on hole strip are connected to the hole edge of the through hole 101 away from the compressor compartment 300 to define the snap-on hole. The snap-on protrusion is arranged in the snap-on hole and connected to the hole edge of the through hole 101 away from the compressor compartment 300. The snap buckle is connected to the surface of the ventilation grille facing the compressor compartment 300, inserted into the snap-on hole, and matched with the snap-on protrusion.

[0090] In some optional embodiments of the present invention, the refrigerating and freezing device is a refrigerator.

[0091] A refrigeration system is arranged inside the refrigerator, and the refrigeration system has a circulation circuit for circulating refrigerant. The refrigeration system includes a compressor 301, a condenser, a throttling line and an evaporator connected in series in sequence, wherein at least the compressor is arranged in a compressor compartment 300, and the compressor compartment 300 can be at any position of the refrigerator, such as the bottom, middle or top of the refrigerator.

[0092] Preferably, the compressor compartment 300 is located at the bottom of the refrigerator, that is, the compressor compartment 300 is located at the bottom of the cabinet 200 .

[0093] In some other optional embodiments of the present invention, the refrigerating and freezing device is a freezer.

[0094] In some optional embodiments of the present invention, the warehouse wall includes a front wall, a rear wall, a top wall, a bottom wall, a left wall and a right wall. The muffler 100 is installed on at least one of the left wall and the right wall of the warehouse wall.

[0095] Preferably, a silencer 100 is installed on both the left wall and the right wall of the warehouse wall.

[0096] like Figure 7 and Figure 8 As shown, in some embodiments, the compressor compartment 300 includes a compartment wall, and the silencer 100 is installed on the left wall and the right wall of the compartment wall, and the through holes 101 of the two silencers 100 are coaxially arranged, that is, the heights of the two through holes 101 are the same.

[0097] In this embodiment, the through holes of the two silencers are coaxially arranged, and each hole is both an air inlet and an air outlet. The heat flow lines are relatively chaotic. Therefore, the symmetrically arranged through holes have a poor heat dissipation effect on the compressor compartment, which can easily cause overheating and shutdown and affect the service life of the compressor.

[0098] like Fig. 9 and Fig.10As shown, in a preferred embodiment of the present invention, the compressor compartment 300 includes a compartment wall, and the silencer 100 is installed on the left wall and the right wall of the compartment wall, and the through holes 101 of the two silencers 100 are staggered up and down.

[0099] Specifically, the through holes 101 of the two silencers 100 are respectively a first through hole 1011 and a second through hole 1012, and the first through hole 1011 is higher than the second through hole 1012. The compartment wall of the compressor compartment 300 includes a front wall, a rear wall, a top wall, a bottom wall, a left wall and a right wall. Except for the through holes and the through holes 101 on the left and right sides of the compressor compartment 300, the compressor compartment 300 is basically closed, and the compressor compartment 300 dissipates heat through the through holes 101 on the left and right sides.

[0100] In this embodiment, since the through holes 101 of the two silencers 100 are staggered up and down, when the compressor is working, the high-temperature airflow in the compressor compartment 300 flows upward and is discharged from the compressor compartment 300 from the through hole 101 located at the upper position; at the same time, since the high-temperature airflow flows upward, a negative pressure is generated at the bottom of the compressor compartment 300, and 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 located at the lower position. In other words, the through hole 101 located at the upper position is the airflow outlet, and the through hole 101 located at the lower position is the airflow inlet, so as to form an airflow that runs through the compressor compartment 300, so that the airflow can flow quickly through the compressor compartment 300, and take away the heat in the compressor compartment 300, which can further enhance the heat dissipation effect of the compressor compartment 300. Therefore, under the premise that the through holes 101 adopt the same aperture size, compared with the coaxial arrangement of the through holes 101 of the two silencers 100 (such as Figure 7-8 As shown), in this embodiment, the through holes 101 of the two silencers 100 are staggered up and down, which can further improve the heat dissipation efficiency of the compressor compartment 300.

[0101] In some optional embodiments of the present invention, when the through holes 101 of the two mufflers 100 are staggered up and down, the preset coefficient is the first preset coefficient; when the through holes 101 of the two mufflers 100 are coaxially arranged, the preset coefficient is the second preset coefficient; the second preset coefficient is equal to the first preset coefficient. Therefore, under the premise that the stable power of the compressor remains unchanged, when the aperture size is calculated according to the formula Φ=nP, the aperture sizes of the through holes 101 of the two in the above two cases are the same; therefore, through the above setting, compared with the method of coaxially arranging the two through holes 101, the method of staggering the two through holes 101 up and down can make the muffler 100 have a better heat dissipation effect under the premise of the same noise reduction effect.

[0102] In some optional embodiments of the present invention, when the through holes 101 of the two silencers 100 are staggered up and down, the preset coefficient is the first preset coefficient; when the through holes 101 of the two silencers 100 are coaxially arranged, the preset coefficient is the second preset coefficient; the second preset coefficient is smaller than the first preset coefficient.

[0103] Specifically, under the premise that the stable power of the compressor remains unchanged, when the aperture size is calculated according to the formula Φ=nP, if the through holes 101 of the two silencers 100 are coaxially arranged, the preset coefficient used is recorded as the second preset coefficient, and the aperture size of the through hole 101 is recorded as the second aperture size; if the through holes 101 of the two silencers 100 are staggered up and down, the preset coefficient used is recorded as the first coefficient, and the aperture size of the through hole 101 is recorded as the first aperture size, and the first preset coefficient is smaller than the first preset coefficient. Therefore, under the premise that the stable power of the compressor remains unchanged, when the aperture size is calculated according to the formula Φ=nP, the first aperture size is smaller than the second aperture size; through the above-mentioned setting, compared with the coaxial arrangement of the two through holes 101, the staggered up and down arrangement of the two through holes 101 can make the silencer 100 have a better noise reduction effect under the premise of having the same heat dissipation effect; or, the silencer 100 can have a better heat dissipation effect and noise reduction effect.

[0104] like Figure 9-10 As shown, 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 warehouse wall, and the second through hole 1012 is lower than the first through hole 1011.

[0105] In this embodiment, since 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, it not only provides a precise reference for the design and manufacture of the first through hole 1011, facilitating the manufacture and assembly of the silencer 100 on the air outlet side of the compressor chamber 300, but also is more conducive to the discharge of high-temperature gas from the compressor chamber 300.

[0106] In some embodiments of the present invention, the compressor includes an upper shell and a lower shell, and a connection area is provided between the upper shell and the lower shell; the central axis of the second through hole 1012 is located between the connection area and the bottom wall of the bin wall.

[0107] In this embodiment, since the central axis of the second through hole 1012 is located between the connecting area 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.

[0108] Further, in some embodiments of the present invention, the connection area between the upper shell and the lower shell is a welding area, that is, the upper shell and the lower shell are welded together.

[0109] 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.

[0110] 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.

[0111] In some alternative embodiments of the present invention, the horizontal distance between the first through hole 1011 and the compressor is equal to the horizontal distance between the second through hole 1012 and the compressor. In other words, the compressor is located in the middle of the compressor compartment 300, and its distance from both sides of the compressor compartment 300 is equal.

[0112] 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: The muffler body has a through hole penetrating the muffler body on its side wall, the aperture of the through hole is Φ=nP, n is a preset coefficient, and P is the stable power of the compressor.

2. The silencing device according to claim 1, characterized in that: The preset coefficient is 0.2 to 0.

6.

3. The silencing device according to claim 1, characterized in that: At least one muffler cavity is provided inside the muffler body, and at least one sound-absorbing hole is provided on the peripheral wall of the through hole, and each of the sound-absorbing holes is connected to at least one muffler cavity; The muffler body is a split structure, and is divided into a first body and a second body along its thickness direction, and the muffler cavity is formed by enclosing the first body and the second body.

4. The silencing device according to claim 3, characterized in that: The first body comprises a first side plate, a peripheral wall and a muffler cavity partition located on the first side plate; The second body includes a second side plate and a slot located on the second side plate and plugged into the muffler chamber partition. The first side plate, the muffler chamber partition, the peripheral wall and the second side plate together enclose the through hole and the muffler chamber.

5. The silencing device according to claim 4, characterized in that: The edge of the peripheral wall away from the first side plate is welded to the second side plate; The type of welding is vibration friction welding or ultrasonic welding.

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

7. 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 6 is also arranged in the box body, wherein the through hole of the silencer device is connected to the inner side of the compressor compartment.

8. The refrigerator-freezer according to claim 7, characterized in that: The silencer is installed on the inner side of the compressor compartment wall; or, the silencer is installed on the outer side of the compressor compartment wall, and the corresponding compartment wall is provided with a through hole corresponding to the through hole.

9. The refrigerator-freezer according to claim 8, characterized in that: The compressor compartment comprises a compartment wall, and the silencers are installed on the left and right walls of the compartment wall, and the through holes of the two silencers are staggered up and down, or the through holes of the two silencers are coaxially arranged.

10. The refrigerator-freezer according to claim 9, characterized in that: When the through holes of the two mufflers are staggered up and down, the preset coefficient is a first preset coefficient; When the through holes of the two mufflers are coaxially arranged, the preset coefficient is a second preset coefficient; The second preset coefficient is less than or equal to the first preset coefficient.

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