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, at least one silencing cavity is formed in the silencing body, a through hole penetrating through the silencing body is formed in the side wall of the silencing body, at least one sound absorption hole is formed in the peripheral wall of the through hole, and each sound absorption hole is communicated with at least one silencing cavity. The silencing body is of a split structure and is divided into a first body and a second body in the thickness direction of the silencing body, and the silencing cavity is defined by the first body and the second body. According to the silencing device, due to the fact that the silencing body is of the split structure, the silencing body is convenient to manufacture and assemble, the manufacturing process can be simplified, and the production cost can be saved; and in addition, a plurality of silencing cavities with different sizes can be conveniently formed in the silencing body, so that noise with different frequencies can be better absorbed.

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 noise frequently occurs in the compressor compartment, which seriously affects the sound quality of refrigerator noise. In the prior art, silencers are usually set on the left and right sides of the compressor compartment to reduce the noise of the compressor compartment. However, the existing silencers have the problems of complicated manufacturing process and high production cost. 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 of complicated manufacturing process of the existing silencer device and achieve the purpose of reducing production costs.

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

[0005] A muffler body, wherein at least one muffler cavity is provided inside the muffler body, a through hole penetrating the muffler body is provided on a side wall of the muffler body, at least one sound absorbing hole is provided on a peripheral wall of the through hole, and each of the sound absorbing holes is connected to at least one of the muffler cavities;

[0006] 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.

[0007] Optionally, the first body includes a first side plate, a peripheral wall, and a muffler cavity partition located on the first side plate;

[0008] 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.

[0009] Optionally, a convex strip forming the slot is provided on the second side plate.

[0010] Optionally, there is a gap between the two side walls of the slot and the corresponding muffler chamber partition.

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

[0012] Optionally, the welding type is vibration friction welding or ultrasonic welding.

[0013] Optionally, an outer contour of the second side plate is larger than an outer contour of the peripheral wall.

[0014] Optionally, at least one of the muffler chambers is in a labyrinth structure, an acoustic flow structure, a honeycomb structure, or a straight tube structure;

[0015] The sound-absorbing body is a sound-absorbing metamaterial.

[0016] Optionally, the through hole has a diameter of 10 to 200 mm;

[0017] The through hole is provided with an installation and assembly interface for installing the ventilation grille.

[0018] In another aspect, the present invention further provides a refrigeration and freezing device, comprising:

[0019] A box body, wherein a compressor compartment is disposed in the box body, and a muffler device as described in any one of the above items is also disposed in the box body, and a through hole of the muffler device is connected to the inner side of the compressor compartment;

[0020] 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.

[0021] In the silencer device of the present invention, since the silencer body is a split structure, the silencer body of the present invention is easy to manufacture and assemble, thereby simplifying the manufacturing process and saving production costs; in addition, it is convenient to set up a plurality of silencer cavities of different sizes inside the silencer body, which is more conducive to absorbing noise of different frequencies.

[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 It is a schematic structural diagram of a refrigeration and freezing device according to one embodiment of the present invention. DETAILED DESCRIPTION

[0030] Refer to the following Figures 1 to 6 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Figure 1 is a schematic structural diagram of the silencer, such as Figure 1 As shown, and refer to Figures 2 to 5 An embodiment of the present invention provides a silencer device 100, which can be used in a refrigeration and freezing device.

[0035] The silencer 100 includes a silencer body, at least one silencer cavity 103 is provided inside the silencer body, a through hole 101 penetrating the silencer body is provided on the side wall of the silencer 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 silencer cavity 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.

[0036] 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.

[0037] like Figure 6 As shown, when in use, the silencer 100 is installed inside the refrigeration and freezing device to reduce the noise in the compressor compartment. The silencer body can be set on the inside of the compressor compartment or on the outside of the compressor compartment. When the noise in the compressor compartment propagates from the inside to the outside, it passes through the silencer body. Under the obstruction of the side wall of the silencer body, the noise enters the silencer cavity 103 through the through hole 101 and the sound absorption hole 102. Under the silencing effect of the silencer cavity 103, the noise is significantly reduced. In addition, the through hole 101 of the silencer body also has the function of heat dissipation, which can transfer the heat in the compressor compartment to the outside of the compressor.

[0038] 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.

[0039] like Figure 2-5 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.

[0040] 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.

[0041] 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.

[0042] like Figure 2 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.

[0043] Furthermore, if Figure 2 As shown, 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.

[0044] like Figure 3 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.

[0045] 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.

[0046] like Figure 5 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 .

[0047] 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.

[0048] 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 .

[0049] 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.

[0050] 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.

[0051] Furthermore, in some embodiments of the present invention, the type of welding is vibration friction welding.

[0052] 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.

[0053] In other embodiments of the present invention, the type of welding is ultrasonic welding.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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 .

[0058] 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.

[0059] 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.

[0060] In some optional embodiments of the present invention, at least one muffler cavity 103 has a labyrinth structure.

[0061] 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.

[0062] In some optional embodiments of the present invention, at least one muffler chamber 103 is in an acoustic flow structure.

[0063] In some optional embodiments of the present invention, at least one muffler cavity 103 has a honeycomb structure.

[0064] In some optional embodiments of the present invention, at least one muffler chamber 103 is a straight tube structure.

[0065] In some optional embodiments of the present invention, the sound-absorbing body is a sound-absorbing metamaterial.

[0066] Specifically, the sound-absorbing metamaterial (MAT metamaterial, MAT is the abbreviation of Metamaterial Absorption Technology) uses a synthetic material with high sound absorption efficiency, and there is a complex maze pattern structure on it. Each maze channel can absorb specific frequencies, and its sound absorption efficiency is as high as 99%. In addition, compared with general sound-absorbing materials, the chemical properties of sound-absorbing metamaterials are more stable, safer, odorless, elastic, fire-retardant, mildew-proof and anti-bacterial, and have a good feel and weight.

[0067] In some alternative embodiments of the present invention, the silencer body is made of ABS material.

[0068] In some optional embodiments of the present invention, the diameter of the through hole 101 is 10-200 mm.

[0069] 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.

[0070] 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.

[0071] 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 refrigerators of different categories and models.

[0072] 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 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.

[0073] 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, since the silencer body is a split structure, it is convenient to produce and prepare the first body 110 and the second body 120, reducing the difficulty of production and processing. Therefore, the silencer body of the present invention is easy to manufacture and assemble, thereby simplifying the manufacturing process and saving production costs; in addition, it is convenient to set a plurality of silencer cavities 103 of different sizes inside the silencer body, which is more conducive to absorbing noise of different frequencies.

[0074] 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. The corresponding warehouse wall is provided with a through hole corresponding to the through hole 101.

[0075] When in use, when the noise in the compressor compartment 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 through the through hole 101 and the through hole.

[0076] 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, and a through hole corresponding to the through hole 101 is opened on the corresponding compartment wall.

[0077] When in use, when the noise in the compressor compartment propagates from the inside to the outside, it passes through the silencer body. Under the obstruction of the side wall of the silencer body, the noise enters the silencer cavity 103 through the through hole, through hole 101 and sound absorption hole 102. Under the silencing effect of the silencer cavity 103, the noise is significantly reduced. The heat in the compressor is transported to the outside of the compressor compartment through the through hole and through hole 101. In addition, the silencer device 100 is installed in the foaming layer around the compressor compartment, which does not occupy the volume of the refrigerator extra, that is, the loss of the refrigerator volume can be minimized, and the installation is stable and firm, impact-resistant, and meets the transportation test.

[0078] In some embodiments of the present invention, the refrigeration and freezing device further comprises a ventilation grille, which is installed at one end of the through hole 101 away from the compressor compartment. Further, the ventilation grille is located outside the compressor compartment.

[0079] 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 through a snap-on structure. The snap-on structure includes a snap-on hole bar, a snap-on protrusion and a snap buckle. The two ends of the snap-on hole bar are connected to the hole edge of the through hole 101 away from the compressor compartment 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. The snap buckle is connected to the surface of the ventilation grille facing the compressor compartment, inserted into the snap-on hole, and matched with the snap-on protrusion.

[0080] In some optional embodiments of the present invention, the refrigerating and freezing device is a refrigerator.

[0081] 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.

[0082] 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.

[0083] In some other optional embodiments of the present invention, the refrigerating and freezing device is a freezer.

[0084] 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.

[0085] Preferably, a silencer 100 is installed on both the left wall and the right wall of the warehouse wall.

[0086] 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 at least one muffler cavity is provided inside the muffler body, a through hole penetrating the muffler body is provided on a side wall of the muffler body, at least one sound absorbing hole is provided on a peripheral wall of the through hole, and each of the sound absorbing holes is connected to at least one of the muffler cavities; 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.

2. The silencing device according to claim 1, 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.

3. The silencing device according to claim 2, characterized in that: The second side plate is provided with a convex strip forming the slot.

4. The silencing device according to claim 2, characterized in that: There is a gap between the two side walls of the slot and the corresponding muffler chamber partition.

5. The silencing device according to claim 2, characterized in that: The edge of the peripheral wall away from the first side plate is welded to the second side plate.

6. The silencing device according to claim 5, characterized in that: The type of welding is vibration friction welding or ultrasonic welding.

7. The silencing device according to claim 5, characterized in that: The outer contour of the second side plate is larger than the outer contour of the peripheral wall.

8. The silencing device according to claim 1, characterized in that: At least one of the muffler chambers is in a labyrinth structure, an acoustic flow structure, a honeycomb structure, or a straight tube structure; The sound-absorbing body is a sound-absorbing metamaterial.

9. The silencing device according to claim 1, characterized in that: The aperture of the through hole is 10 to 200 mm; The through hole is provided with an installation and assembly interface for installing the ventilation grille.

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

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