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The present application is based on and claims priority to
Chinese Patent Application No. 202320862134.9, filed on April 17, 2023 , the entire contents of which are incorporated herein by reference.
TECHNICAL FIELD
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The present application relates to the field of refrigeration storage technology, and particularly relates to a refrigerating and freezing device.
BACKGROUND
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Currently, refrigerator noise is an important performance indicator of refrigerators, with compressor noise being the main noise source, often accounting for 70% or more of the noise contribution. Moreover, abnormal sounds frequently occur in the compressor compartment, seriously affecting the noise quality of refrigerators. In the prior art, based on heat dissipation holes set on the side wall of the compressor compartment, sound absorption holes are added on the hole walls of the heat dissipation holes, with each sound absorption hole communicating with one or more silencing chambers, forming a multi-chamber resonant resistant noise reduction structure to reduce the noise volume mixed in a heat dissipation airflow. However, other compartment walls of the above compressor compartment are closed structures, and sound and heat can only pass through the heat dissipation holes, making it impossible to isolate low-frequency vibrations, resulting in poor noise reduction effects and consequently degraded user experience.
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Any prior art mentioned in the specification does not constitute an acknowledgment or suggestion that such prior art forms part of the common general knowledge in any jurisdiction, or that such prior art could reasonably be expected to be understood, regarded as relevant and/or combined with other prior art by persons skilled in the art.
SUMMARY
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The object of the present application is to provide a refrigerating and freezing device that solves the problem of inability to isolate low-frequency vibrations in existing compressor compartments. To achieve the above object, an embodiment of the present application provides a refrigerating and freezing device,
- including a cabinet, wherein the cabinet includes a housing and a compressor compartment connected to each other;
- the housing includes cabinet walls, the compressor compartment includes compartment walls;
- at least one cabinet wall and/or at least one compartment wall is provided with reinforcing ribs, the reinforcing ribs include a recessed rib and a protruding rib;
- the cabinet is also provided with a noise reduction device at least configured to reduce noise generated in the compressor compartment.
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As a further improvement of the embodiment of the present application, the reinforcing ribs are provided on the compartment wall at a lower side and/or a rear side of the compressor compartment.
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As a further improvement of the embodiment of the present application, the compartment wall or the cabinet wall provided with the reinforcing ribs includes a first partition, a second partition and a third partition distributed sequentially along a length direction thereof, heights of the first partition, the second partition and the third partition gradually increase along a first direction, and the first direction is perpendicular to an inner surface of the corresponding compartment wall or cabinet wall.
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As a further improvement of the embodiment of the present application, the recessed rib is strip-shaped and extends along a length direction of the corresponding compartment wall or cabinet wall;
a cross section of the protruding rib is quasi-square or quasi-rectangular.
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As a further improvement of the embodiment of the present application, at least two parallel recessed ribs are provided in each of the first partition, the second partition and the third partition.
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As a further improvement of the embodiment of the present application, the protruding rib is provided at a position close to the first partition in the second partition.
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As a further improvement of the embodiment of the present application, at least two protruding ribs are provided in the second partition, and the at least two protruding ribs are arranged in parallel and spaced apart along a width direction of the corresponding compartment wall or cabinet wall.
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As a further improvement of the embodiment of the present application, the noise reduction device is installed on an interior or exterior of the compressor compartment;
a foam layer is formed between the housing and the compartment wall of the compressor compartment, and the noise reduction device is provided in the foam layer.
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As a further improvement of the embodiment of the present application, the noise reduction device includes a silencer body, at least one silencing chamber is provided in the silencer body, a first heat dissipation hole penetrating through the silencer body is provided on the silencer body, at least one first sound absorption hole is provided on a peripheral wall of the first heat dissipation hole, each first sound absorption hole communicates with at least one silencing chamber, and a first through hole corresponding to the first heat dissipation hole is provided on the corresponding compartment wall.
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As a further improvement of the embodiment of the present application, the noise reduction device further includes a second sound absorption hole, there is at least one second sound absorption hole located on one side wall of the silencer body, each second sound absorption hole communicates with at least one silencing chamber, and an opening of the second sound absorption hole faces towards an interior of the compressor compartment;
- on the condition that the noise reduction device is installed on an outer side of the compartment wall, a second through hole corresponding to the second sound absorption hole is provided on the corresponding compartment wall;
- there are at least two second sound absorption holes, and hole diameters of the at least two second sound absorption holes are different;
- a hole diameter of each second sound absorption hole is smaller than a hole diameter of the first heat dissipation hole;
- at least one silencing chamber has a labyrinth structure or an acoustic flow structure or a honeycomb structure or a straight tube structure;
- the silencing chamber communicating with the second sound absorption hole does not communicate with the silencing chamber communicating with the first sound absorption hole;
- the silencing chamber communicating with the second sound absorption hole is close to an inner side of the silencer body, and the silencing chamber communicating with the first sound absorption hole is close to an outer side of the silencer body.
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Compared with the prior art, the beneficial effects of the present application are: in the refrigerating and freezing device of the application, recessed ribs and protruding ribs are provided on the cabinet wall and/or compartment wall, causing their natural frequencies to differ from those of existing cabinet walls and/or compartment walls, thereby reducing low-frequency vibrations that are prevalent in the prior art. Additionally, the recessed ribs, protruding ribs and noise reduction device jointly absorb airborne sound, thereby significantly reducing compressor compartment noise, improving the sound quality of the refrigerating and freezing device, and achieving the purpose of improving user experience.
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According to the detailed description of specific embodiments of the present application in conjunction with the accompanying drawings below, those skilled in the art will better understand the above and other purposes, advantages and features of the present application.
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The terms "comprise" and variations thereof such as "comprises", "comprised", "comprising", "including", "containing", unless the context clearly dictates otherwise, do not exclude other features, components, elements or steps.
BRIEF DESCRIPTION OF THE DRAWINGS
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The following describes some specific embodiments of the present application in an exemplary rather than limiting manner with reference to the accompanying drawings. The same reference numerals in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:
- Fig. 1 is a schematic structural view of a compartment wall according to an embodiment of the present application;
- Fig. 2 is a schematic structural view of a compartment wall according to an embodiment of the present application;
- Fig. 3 is a schematic structural view of a compartment wall according to an embodiment of the present application;
- Fig. 4 is a schematic structural view of a noise reduction device according to an embodiment of the present application;
- Fig. 5 is a schematic structural view of a noise reduction device according to an embodiment of the present application;
- Fig. 6 is a schematic structural view of a noise reduction device according to an embodiment of the present application;
- Fig. 7 is a schematic front view of a noise reduction device according to an embodiment of the present application;
- Fig. 8 is an A-A sectional view of the noise reduction device shown in Fig. 7;
- Fig. 9 is a schematic side view of a noise reduction device according to an embodiment of the present application;
- Fig. 10 is a B-B sectional view of the noise reduction device shown in Fig. 9;
- Fig. 11 is a comparison diagram of dynamic stiffness between the existing bottom wall and the bottom wall of the present application.
DETAILED DESCRIPTION
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The refrigerating and freezing device of the embodiments of the present application will be described below with reference to Figs. 1 to 11. In the description of this embodiment, it should be understood that the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include at least one such feature, that is, one or more such features. In the description of the present application, "multiple" means at least two, such as two, three, etc., unless otherwise specifically limited. When a feature "includes or comprises" one or some of its covered features, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.
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Unless otherwise explicitly specified and limited, terms such as "provided", "installed", "connected", "connected", "fixed", "coupled" and the like should be broadly understood. For example, they can be fixedly connected or detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through intermediate media, or they can be communication within two elements or interaction between two elements, unless otherwise explicitly limited. Those of ordinary skill in the art should be able to understand the specific meaning of these terms in the present application according to specific situations.
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Furthermore, in the description of this embodiment, a first feature "above" or "below" a second feature may include direct contact between the first and second features, and may also include the first and second features not being in direct contact but contacting through other features between them. That is, in the description of this embodiment, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under", or "beneath" the second feature may mean the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
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In the description of this embodiment, references to "an embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" mean that specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
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Fig.1 is a schematic structural view of a compartment wall 110. As shown in Fig.1, and with reference to Figs. 2 to 10, an embodiment of the present application provides a refrigerating and freezing device, which includes a cabinet, and the cabinet includes a housing and a compressor compartment connected to each other. The housing and the compressor compartment are used to define a foaming space on an outer side of the foaming space, that is, the housing, the compressor compartment and a liner define the foaming space.
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The housing includes cabinet walls, the compressor compartment includes compartment walls 110; reinforcing ribs include a recessed rib 120 and a protruding rib 130, at least one cabinet wall and/or at least one compartment wall 110 is provided with reinforcing ribs; the cabinet is also provided with a noise reduction device at least configured to reduce noise generated in the compressor compartment.
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The working principle of the refrigerating and freezing device of the present application is:
During use, when noise from inside the compressor compartment propagates outward through the noise reduction device on the cabinet, the noise is significantly reduced by the silencing effect of the noise reduction device. Meanwhile, the recessed rib 120 and protruding rib 130 on the cabinet wall and/or compartment wall 110 optimize a dynamic stiffness of the cabinet wall and/or compartment wall 110 (as shown in Fig. 11), changing a natural frequency of the cabinet wall and/or compartment wall 110, so that the changed natural frequency of the cabinet wall and/or compartment wall 110 does not coincide with a resonance frequency of the compressor, thereby avoiding resonance. That is, the recessed rib 120 and protruding rib 130 can reduce vibration transmission from the compressor to the cabinet wall and/or compartment wall 110, thereby reducing vibration of the entire compressor compartment and cabinet.
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In the refrigerating and freezing device of the application, recessed ribs 120 and protruding ribs 130 are provided on the cabinet wall and/or compartment wall 110, causing their natural frequencies to differ from those of existing cabinet walls and/or compartment walls 110, thereby reducing low-frequency vibrations that are prevalent in the prior art. Additionally, the recessed ribs 120, protruding ribs 130 and noise reduction device jointly absorb airborne sound, thereby significantly reducing compressor compartment noise, improving the sound quality of the refrigerating and freezing device, and achieving the purpose of improving user experience.
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In some optional embodiments of the present application, the compartment walls 110 include a front wall, a rear wall, a top wall, a bottom wall, a left wall and a right wall.
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In some optional embodiments of the present application, the recessed rib 120 and protruding rib 130 are provided on the compartment wall 110 at a lower side of the compressor compartment. That is, the recessed rib 120 and protruding rib 130 are provided on the bottom wall.
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A vibration acceleration of an existing bottom wall is 1.1 m/s2, while a vibration acceleration of the bottom wall in this embodiment is 0.4 m/s2. Evidently, compared with the prior art, by providing the recessed rib 120 and protruding rib 130 on the bottom wall, the vibration acceleration of the bottom wall can be significantly reduced, thereby significantly optimizing the dynamic stiffness of the compartment wall 110 (as shown in Fig.11), notably improving the natural frequency of the compartment wall 110.
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In some optional embodiments of the present application, the recessed rib 120 and protruding rib 130 are provided on the compartment wall 110 at a rear side of the compressor compartment. That is, the recessed rib 120 and protruding rib 130 are provided on the rear wall.
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In some optional embodiments of the present application, the recessed rib 120 and protruding rib 130 are provided on the compartment wall 110 at both the lower side and rear side of the compressor compartment. That is, the recessed rib 120 and protruding rib 130 are provided on both the bottom wall and rear wall.
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Compared with having the recessed rib 120 and protruding rib 130 only on the compartment wall 110 at either the lower side or rear side of the compressor compartment, this embodiment, having the recessed rib 120 and protruding rib 130 on the compartment wall 110 at both the lower side and rear side, can further reduce low-frequency vibrations that are prevalent in the prior art. Additionally, this embodiment can further significantly reduce noise from the compressor compartment, thereby further improving the sound quality of the refrigerating and freezing device, and consequently further improving user experience.
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As shown in Figs. 1-3, in some optional embodiments of the present application, the compartment wall 110 or cabinet wall provided with the reinforcing ribs includes a first partition 111, a second partition 112 and a third partition 113 distributed sequentially along its length direction, heights of the first partition 111, second partition 112 and third partition 113 gradually increase along a first direction, and the first direction is perpendicular to an inner surface of the corresponding compartment wall 110 or cabinet wall.
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Specifically, a first step is provided between the first partition 111 and the second partition 112, and a second step is provided between the second partition 112 and the third partition 113, where a height of the first step is greater than a height of the second step.
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Further preferably, upper and lower ends of a side of the first partition 111 adjacent to the second partition 112 extend toward the third partition 113, forming an upper arm and a lower arm. Specifically, the upper arm and lower arm are distributed on an upper and lower sides of the second partition 112 and extend to the third partition 113, where the upper arm extends to a mounting hole of the third partition 113, and the lower arm extends to an outer edge of the third partition 113.
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As shown in Figs. 1-3, in some optional embodiments of the present application, the recessed rib 120 is strip-shaped and extends along the length direction of the corresponding compartment wall 110 or cabinet wall.
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As shown in Figs. 1-3, in some optional embodiments of the present application, a cross section of the protruding rib 130 is quasi-square or quasi-rectangular. A mounting hole is provided at the protruding rib 130.
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Specifically, adjacent sides of the quasi-square or quasi-rectangular shape are connected through an arc-shaped transition portion, thereby reducing stress concentration.
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As shown in Figs. 1-3, in some optional embodiments of the present application, at least two parallel recessed ribs 120 are provided in each of the first partition 111, second partition 112 and third partition 113.
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As shown in Figs. 1-3, in some optional embodiments of the present application, the recessed rib 120 provided in the first partition 111 is a first recessed rib 121, the recessed rib 120 provided in the second partition 112 is a second recessed rib 122, and the recessed rib 120 provided in the third partition 113 is a third recessed rib 123.
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Specifically, three parallel first recessed ribs 121 are provided in the first partition 111, with equal spacing between any two adjacent first recessed ribs 121. Three parallel second recessed ribs 122 are provided in the second partition 112, with equal spacing between any two adjacent second recessed ribs 122. A width of the second recessed rib 122 is smaller than a width of the first recessed rib 121. Two parallel third recessed ribs 123 are provided in the third partition 113, and a width of the third recessed rib 123 is smaller than the width of the first recessed rib 121.
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As shown in Figs. 1-3, in some optional embodiments of the present application, the protruding rib 130 provided in the first partition 111 is a first protruding rib 131, and the first protruding rib 131 is located in an upper left corner of the first partition 111.
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An uppermost first recessed rib 121 in the first partition 111 has a shortest length, the first recessed rib 121 is located on a right side of the first protruding rib 131, and there is a certain gap between the first recessed rib 121 and the first protruding rib 131.
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As shown in Figs. 1-3, in some optional embodiments of the present application, at least two protruding ribs 130 are provided in the second partition 112, and the at least two protruding ribs 130 are arranged in parallel and spaced apart along a width direction of the corresponding compartment wall 110 or cabinet wall.
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As shown in Figs. 1-3, in some optional embodiments of the present application, the protruding rib 130 provided in the second partition 112 is a second protruding rib 132. Two parallel protruding ribs 130 are provided in the second partition 112.
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Specifically, two second protruding ribs 132 in the second partition 112 are respectively located at a junction of the first partition 111 and the second partition 112, and are respectively located at an upper side and lower side of the second partition 112. There are three second recessed ribs 122 in the second partition 112, the three second recessed ribs 122 are arranged in parallel, and lengths of the three second recessed ribs 122 are equal. The second recessed rib 122 at the upper side of the second partition 112 is located on a right side of the corresponding second protruding rib 132, the second recessed rib 122 at the lower side of the second partition 112 is located on the right side of the corresponding second protruding rib 132, and the second recessed rib 122 in middle of the second partition 112 is located on a right side of the gap between the two second protruding ribs 132.
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As shown in Figs. 4-10, in some optional embodiments of the present application, the noise reduction device is installed on an interior or exterior of the compressor compartment.
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During use, the noise reduction device can be placed on the inner side or outer side of the compressor compartment of the refrigerator. When noise from inside the compressor compartment propagates outward through the noise reduction device, the noise is significantly reduced by the silencing effect of the noise reduction device. Meanwhile, the recessed rib 120 and protruding rib 130 can reduce vibration transmission from the compressor to the cabinet wall or compartment wall 110, thereby reducing vibration of the entire compressor compartment and cabinet.
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As shown in Figs. 4-10, in some optional embodiments of the present application, the noise reduction device is installed on the exterior of the compressor compartment. Specifically, a foam layer is formed between the housing of the cabinet and the compartment wall 110 of the compressor compartment, and the noise reduction device is provided in the foam layer.
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During use, the noise reduction device can be placed in the foam layer outside the compressor compartment of the refrigerator. When noise from inside the compressor compartment propagates outward through the noise reduction device, the noise is significantly reduced by the silencing effect of the noise reduction device. Meanwhile, the recessed rib 120 and protruding rib 130 can reduce vibration transmission from the compressor to the cabinet wall, thereby reducing vibration of the entire compressor compartment and cabinet.
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As shown in Figs. 4-10, in some optional embodiments of the present application, the noise reduction device is installed on both the interior and exterior of the compressor compartment.
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During use, the noise reduction device can be placed both inside and outside the compressor compartment of the refrigerator. When noise from inside the compressor compartment propagates outward through the noise reduction devices on both the interior and exterior of the compressor compartment, the noise is significantly reduced by the silencing effect of the noise reduction devices. Meanwhile, the recessed rib 120 and protruding rib 130 can reduce vibration transmission from the compressor to the cabinet wall and/or compartment wall 110, thereby reducing vibration of the entire compressor compartment and cabinet.
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In this embodiment, by simultaneously providing noise reduction devices both inside and outside the compressor compartment, the noise reduction effect can be further enhanced.
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As shown in Figs. 4-10, in some optional embodiments of the present application, the noise reduction device includes a silencer body 210, at least one silencing chamber 240 is provided in the silencer body 210, a heat dissipation hole 230 penetrating through the silencer body 210 is provided on the silencer body 210, at least one first sound absorption hole is provided on a peripheral wall of the heat dissipation hole 230, each first sound absorption hole communicates with at least one silencing chamber 240, and a first through hole corresponding to the heat dissipation hole 230 is provided on the corresponding compartment wall 110.
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When the noise reduction device is in use and noise from inside the compressor compartment propagates outward through the silencer body 210, when the noise passes through the heat dissipation hole 230, it will enter the corresponding silencing chamber 240 through the first sound absorption hole, and by the silencing effect of the silencing chamber 240, the noise is significantly reduced.
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As shown in Figs. 5-10, in some optional embodiments of the present application, the noise reduction device further includes a second sound absorption hole 220, there is at least one second sound absorption hole 220 located on one side wall of the silencer body 210, each second sound absorption hole 220 communicates with at least one silencing chamber 240, and an opening of the second sound absorption hole 220 faces towards the interior of the compressor compartment. When the noise reduction device is installed on an outer side of the compartment wall 110, a second through hole corresponding to the second sound absorption hole 220 is provided on the corresponding compartment wall 110.
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Specifically, the side wall of the silencer body 210 provided with the second sound absorption hole 220 is a sound-receiving surface 211. The second sound absorption hole 220 and the silencing chamber 240 form a blind hole-like structure.
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The working process of the noise reduction device in this embodiment is: during use, the silencer body 210 can be placed inside or outside the compressor compartment of the refrigerator, with the second sound absorption hole 220 facing towards the interior of the compressor compartment. When noise from inside the compressor compartment propagates outward through the silencer body 210 inside or outside the compressor compartment, part of the noise, blocked by the side wall of the silencer body 210, will enter the silencing chamber 240 through the second sound absorption hole 220; another part of the noise will enter the corresponding silencing chamber 240 through the first sound absorption hole when passing through the heat dissipation hole 230, and by the silencing effect of the silencing chamber 240, the noise is significantly reduced.
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In this embodiment, both side sound absorption and inner sound absorption methods are employed simultaneously. Compared with only providing the second sound absorption hole 220 on a hole wall of the heat dissipation hole 230, simultaneously providing the second sound absorption hole 220 on the side wall of the silencer body 210 can further enhance the sound reduction, thereby further improving user experience.
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As shown in Figs. 4-10, in some optional embodiments of the present application, the noise reduction device is plate-shaped.
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As shown in Figs. 5-10, in some optional embodiments of the present application, there are at least two second sound absorption holes 220 on the silencer body 210, and the hole diameters of the at least two second sound absorption holes 220 are different.
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Specifically, at least two types of second sound absorption holes 220 having different hole diameters are provided on the side wall of the silencer body 210, for example: 2, 3, 4, 5, 6, 7, 8, 9 or 10 types.
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The working principle of the noise reduction device in this embodiment is: during use, second sound absorption holes 220 with different hole diameters can absorb noise of different frequencies.
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Therefore, compared with using only one hole diameter for the second sound absorption holes 220 on the side wall of the silencer body 210, this embodiment using second sound absorption holes 220 with different hole diameters can increase the sound reduction frequency range of the noise reduction device, thereby enabling the noise reduction device to have better sound reduction effects, and consequently further improving user experience.
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As shown in Figs. 5-10, in some optional embodiments of the present application, the hole diameter of each second sound absorption hole 220 is smaller than a hole diameter of the heat dissipation hole 230.
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In some optional embodiments of the present application, at least one silencing chamber 240 has a labyrinth structure.
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Compared with silencing chambers 240 having acoustic flow structure, honeycomb structure or straight tube structure, in this embodiment, the labyrinth structure silencing chamber 240 has a greater depth, which can significantly extend the sound propagation path, forming an acoustic meta-structure, thereby further enhancing the noise reduction effect of the noise reduction device.
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In some optional embodiments of the present application, at least one silencing chamber 240 has an acoustic flow structure.
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In some optional embodiments of the present application, at least one silencing chamber 240 has a honeycomb structure.
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In some optional embodiments of the present application, at least one silencing chamber 240 has a straight tube structure.
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In some optional embodiments of the present application, the heat dissipation hole 230 is located in a middle of the silencer body 210, and the first sound absorption holes are distributed around the heat dissipation hole 230.
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In some optional embodiments of the present application, the silencing chamber 240 communicating with the second sound absorption hole 220 does not communicate with the silencing chamber 240 communicating with the first sound absorption hole. In some alternative embodiments of the present application, the silencing chamber 240 communicating with the second sound absorption hole 220 communicates with the silencing chamber 240 communicating with the second sound absorption hole 220.
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In this embodiment, since the silencing chamber 240 corresponding to the second sound absorption hole 220 does not communicate with the silencing chamber 240 corresponding to the second sound absorption hole 220, that is, the second sound absorption hole 220 does not communicate with the heat dissipation hole 230, the sound reduction effect can be further enhanced.
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In some optional embodiments of the present application, the silencing chamber 240 communicating with the second sound absorption hole 220 does not communicate with the silencing chamber 240 communicating with the first sound absorption hole. The silencing chamber 240 communicating with the second sound absorption hole 220 is close to an inner side of the silencer body 210, and the silencing chamber 240 communicating with the first sound absorption hole is close to an outer side of the silencer body 210.
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In this embodiment, through the above arrangement, the production and manufacture of the noise reduction device can be facilitated.
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In some optional embodiments of the present application, the refrigerating and freezing device is a refrigerator.
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In some optional embodiments of the present application, the refrigerating and freezing device is a freezer.
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At this point, those skilled in the art should recognize that although multiple exemplary embodiments of the present application have been shown and described in detail, many other variations or modifications that conform to the principles of the present application can be directly determined or derived from the content disclosed in the present application without departing from the spirit and scope of the present application. Therefore, the scope of the present application should be understood and recognized as covering all such other variations or modifications.