Refrigeration and freezing equipment

Abstract

This application relates to the field of cooling and storage technology, and more particularly to a refrigeration and freezing apparatus, which includes a housing, the housing includes an outer shell and a compressor chamber connected to each other, the outer shell includes housing walls, the compressor chamber includes chamber walls, at least one housing wall and / or at least one chamber wall is provided with reinforcing ribs, the reinforcing ribs include concave ribs and convex ribs, and the housing is further provided with a sound-absorbing device used to reduce noise generated at least in the compressor chamber. In the refrigeration and freezing apparatus of this application, by providing concave ribs and convex ribs on the housing walls and / or chamber walls, low-frequency vibrations are reduced and, in cooperation with the sound-absorbing device, airborne sound is absorbed, significantly reducing noise in the compressor chamber.

Description

Technical Field

[0001] This application is filed based on the Chinese patent application with application number 202320862134.9 and filing date April 17, 2023, and claims the priority of the Chinese patent application. The entire content of the above patent application is incorporated herein by reference.

[0002] This application relates to the technical field of cooling and storage, and particularly to refrigeration and freezing devices.

Background Art

[0003] Currently, the noise of a refrigerator is an important indicator of the refrigerator's performance. The compressor noise is the most major noise source, and its noise contribution rate often accounts for more than 70%. In addition, abnormal noises in the refrigerator frequently occur in the compressor chamber, which seriously affects the noise quality of the refrigerator. In the prior art, based on the heat dissipation holes provided on the side wall of the compressor chamber, sound absorption holes are added to the hole walls of the heat dissipation holes. Each sound absorption hole communicates with one or more sound absorption cavities to form a sound absorption structure of a multi-cavity resonance resistance, reducing the volume of the noise contained in the heat dissipation airflow. However, the other chamber walls of the above compressor chamber are all of a sealed structure, and sound and heat can only pass through the heat dissipation holes, unable to block low-frequency vibrations, resulting in a poor noise reduction effect and causing a decline in user experience.

[0004] Note that any prior art mentioned in the specification does not confirm or imply that the prior art constitutes a part of the common knowledge in any jurisdiction, or is understood by those skilled in the art and considered relevant, and / or can be reasonably expected to be combined with other prior arts.

Summary of the Invention

[0005] The object of this application is to provide a refrigeration and freezing device that solves the problem that the conventional compressor chamber cannot block low-frequency vibrations. To achieve one of the above invention objects, an embodiment of this application provides a refrigeration and freezing device.

[0006] The enclosure includes a housing, the housing including an outer shell and a compressor chamber connected to each other, The outer shell includes the housing wall, and the compressor chamber includes the chamber wall. Reinforcing ribs are provided on at least one of the housing walls and / or at least one of the chamber walls, and the reinforcing ribs include concave ribs and convex ribs, The housing is provided with a noise reduction device for reducing noise generated at least inside the compressor chamber.

[0007] As a further improvement to the embodiment of the present application, the reinforcing ribs are provided on the lower and / or rear chamber wall of the compressor chamber.

[0008] As a further improvement to the embodiment of the present application, the chamber wall or housing wall provided with the reinforcing ribs includes a first section, a second section and a third section arranged sequentially along its longitudinal direction, wherein the height of the first section, the second section and the third section gradually increases along a first direction, and the first direction is perpendicular to the inner surface of the corresponding chamber wall or housing wall.

[0009] As a further improvement to the embodiment of this application, the concave rib is elongated and extends along the longitudinal direction of the corresponding chamber wall or housing wall, The cross-section of the aforementioned convex rib is approximately square or rectangular.

[0010] As a further improvement to the embodiment of this application, at least two parallel-arranged recessed ribs are provided within the first section, the second section, and the third section, respectively.

[0011] As a further improvement to the embodiment of this application, the convex rib is provided in the second section at a position close to the first section.

[0012] As a further improvement to the embodiment of this application, at least two of the convex ribs are provided within the second section, and at least two of the convex ribs are provided parallel to each other along the width direction of the corresponding chamber wall or housing wall.

[0013] As a further improvement to the embodiment of this application, the sound-dampening device is installed inside or outside the compressor chamber. A foamed layer is formed between the outer shell and the chamber wall of the compressor chamber, and the sound-absorbing device is provided within the foamed layer.

[0014] As a further improvement of the embodiment of the present application, the sound silencing device includes a sound silencing body, the sound silencing body is provided with at least one sound silencing cavity, the sound silencing body is provided with a first heat dissipation hole penetrating the sound silencing body, the peripheral wall of the first heat dissipation hole is provided with at least one first sound absorbing hole, each of the first sound absorbing holes communicates with at least one of the sound silencing cavities, and the corresponding chamber wall is provided with a first through hole corresponding to the first heat dissipation hole.

[0015] As a further improvement of the embodiment of the present application, the sound-absorbing device further includes a second sound-absorbing hole, the second sound-absorbing hole being at least one and located on one side wall of the sound-absorbing body, each of the second sound-absorbing holes communicating with at least one of the sound-absorbing cavities, and the opening of the second sound-absorbing hole facing into the compressor chamber. When the sound-dampening device is installed on the outside of the room wall, the corresponding room wall is provided with a second through-hole corresponding to the second sound-absorbing hole. The aforementioned second sound-absorbing holes number at least two, and the diameters of at least two of the aforementioned second sound-absorbing holes are different from each other. The diameter of each of the second sound-absorbing holes is smaller than the diameter of the first heat-dissipating holes. At least one of the sound-dampening cavities is a labyrinth structure, a sound-flow structure, a honeycomb structure, or a straight-pipe structure. The sound-absorbing cavity communicating with the second sound-absorbing hole and the sound-absorbing cavity communicating with the first sound-absorbing hole are not in communication. The sound-absorbing cavity communicating with the second sound-absorbing hole is closer to the inside of the sound-absorbing body, while the sound-absorbing cavity communicating with the first sound-absorbing hole is closer to the outside of the sound-absorbing body.

[0016] Compared to the prior art, the advantages of this application are as follows: In the refrigeration and freezing apparatus of this application, by providing concave ribs and convex ribs on the enclosure wall and / or chamber wall, the natural frequencies of the conventional enclosure wall and / or chamber wall can be avoided, and low-frequency vibrations in the prior art can be reduced. Furthermore, the concave ribs, convex ribs and sound-absorbing device of this application work together to absorb airborne sound, significantly reducing noise in the compressor chamber, improving the sound quality of the refrigeration and freezing apparatus, and achieving the objective of improving the user experience.

[0017] A detailed description of specific embodiments of this application with reference to the following drawings will allow those skilled in the art to better understand the above and other purposes, advantages and features of this application.

[0018] The terms "comprise" and its variations "comprises," "comprised," "comprising," "including," and "containing" used in this text do not preclude other features, components, elements, or steps unless explicitly required by the context. [Brief explanation of the drawing]

[0019] The embodiments of this application will be described in detail below in an illustrative and non-limiting manner with reference to Figures 1 to 11. In the drawings, the same reference numerals indicate the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. [Figure 1] Figure 1 is a schematic structural diagram of a room wall according to one embodiment of this application. [Figure 2] Figure 2 is a schematic structural diagram of a room wall according to one embodiment of this application. [Figure 3] Figure 3 is a schematic structural diagram of a room wall according to one embodiment of this application. [Figure 4] Figure 4 is a schematic diagram of the structure of a sound-dampening device according to one embodiment of this application. [Figure 5] Figure 5 is a schematic diagram of the structure of a sound-dampening device according to one embodiment of this application. [Figure 6] FIG. 6 is a schematic structural diagram of a silencing device according to an embodiment of the present application. [Figure 7] FIG. 7 is a schematic front view of a silencing device according to an embodiment of the present application. [Figure 8] FIG. 8 is a cross-sectional view taken along line A-A of the silencing device shown in FIG. 7. [Figure 9] FIG. 9 is a schematic side view of a silencing device according to an embodiment of the present application. [Figure 10] FIG. 10 is a cross-sectional view taken along line B-B of the silencing device shown in FIG. 9. [Figure 11] FIG. 11 is a comparison diagram of the dynamic stiffness of the conventional bottom wall and the bottom wall of the present application.

Mode for Carrying Out the Invention

[0020] Hereinafter, a refrigeration and freezing device according to an embodiment of the present application will be described with reference to FIGS. 1 to 11. In the description of this embodiment, the terms "first" and "second" are used only for explanatory purposes and should not be understood as indicating relative importance, nor should they be understood as implying the number of technical features shown. Therefore, those having the "first" and "second" features can explicitly or implicitly include at least one of those features, that is, include one or more of those features. In the description of the present application, "a plurality" means at least two, for example, two, three, etc., unless there is a clear specific limitation separately. When a certain feature "includes" or "contains" other features, unless there is a special description separately, this indicates that it does not exclude other features and can further include other features.

[0021] Unless otherwise explicitly stated and limited, terms such as “to provide,” “to attach,” “to connect,” “to link,” “to fix,” and “to join” should be interpreted broadly. For example, the connection may be fixed, removable, or integrally molded. The connection may be mechanical or electrical. The connection may be direct or indirect via an intermediate medium. The connection may be internal communication between two elements or an interaction between two elements, and unless otherwise explicitly limited, a person skilled in the art should be able to understand the specific meaning of these terms in this application depending on the specific circumstances.

[0022] Furthermore, in the description of this embodiment, "above" or "below" the second feature of the first feature includes cases where the first and second features are in direct contact, as well as cases where they are not in direct contact but are in contact through other features between them. That is, in the description of this embodiment, "above," "above," and "on the top surface" of the second feature includes cases where the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. "Below," "below," or "on the bottom surface" of the second feature includes cases where the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than that of the second feature.

[0023] In the description of this embodiment, any reference terms such as "one embodiment," "several embodiments," "exemplary embodiment," "example," "specific example," or "several examples" mean that the specific features, structures, materials, or properties described with that embodiment or example are included in at least one embodiment or example of this application. In this specification, exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or properties described may be combined in an appropriate manner in any one or more embodiments or examples.

[0024] Figure 1 is a schematic structural diagram of the chamber wall 110. As shown in Figure 1, and also referring to Figures 2 to 10, embodiments of this application provide a refrigeration and freezing apparatus. The refrigeration and freezing apparatus includes a housing, which includes an outer shell and a compressor chamber connected to each other. The outer shell and the compressor chamber are used to define the foamed space outside the foamed space. That is, the outer shell, the compressor chamber and the inner tank (internal tub) define the foamed space.

[0025] The outer shell includes the housing walls, and the compressor chamber includes the chamber wall 110. The reinforcing ribs include concave ribs 120 and convex ribs 130, and the reinforcing ribs are provided on at least one housing wall and / or at least one chamber wall 110. The housing is further provided with a sound-dampening device, which is used to reduce noise generated at least inside the compressor chamber.

[0026] The operating principle of the refrigeration and freezing device of this application is as follows: During operation, when noise from inside the compressor chamber propagates from the inside to the outside, it passes through the sound-dampening device on the housing, and the sound-dampening effect of the device significantly reduces the noise. At the same time, the concave ribs 120 and convex ribs 130 on the housing wall and / or chamber wall 110 optimize the dynamic stiffness of the housing wall and / or chamber wall 110 (as shown in Figure 11), and by changing the natural frequency of the housing wall and / or chamber wall 110, the modified natural frequency of the housing wall and / or chamber wall 110 does not overlap with the resonant frequency of the compressor, thereby avoiding resonance. In other words, the concave ribs 120 and convex ribs 130 reduce the transmission of vibration from the compressor to the housing wall and / or chamber wall 110, thereby reducing vibration of the compressor chamber and the entire housing.

[0027] In the refrigeration and freezing apparatus of this application, by providing concave ribs 120 and convex ribs 130 on the housing wall and / or chamber wall 110, the natural frequencies of the conventional housing wall and / or chamber wall 110 can be avoided, thereby reducing low-frequency vibrations in the prior art. Furthermore, the concave ribs 120, convex ribs 130 and sound-absorbing device of this application work together to absorb airborne sound, significantly reducing noise in the compressor chamber, improving the sound quality of the refrigeration and freezing apparatus, and achieving the objective of improving the user experience.

[0028] In some selectable embodiments of this application, the chamber wall 110 includes a front wall, a rear wall, a top wall, a bottom wall, a left wall, and a right wall.

[0029] In some selectable embodiments of this application, the lower chamber wall 110 of the compressor chamber is provided with concave ribs 120 and convex ribs 130. That is, the bottom wall is provided with concave ribs 120 and convex ribs 130.

[0030] The conventional bottom wall vibration acceleration is 1.1 m / s². 2 In contrast, the vibration acceleration of the bottom wall in this embodiment is 0.4 m / s². 2 Therefore, compared to conventional technology, by providing concave ribs 120 and convex ribs 130 on the bottom wall, the vibration acceleration of the bottom wall is significantly reduced, thereby significantly optimizing the dynamic stiffness of the chamber wall 110 (as shown in Figure 11), and clearly improving the natural frequency of the chamber wall 110.

[0031] In some selectable embodiments of this application, the rear chamber wall 110 of the compressor chamber is provided with concave ribs 120 and convex ribs 130. That is, the rear wall is provided with concave ribs 120 and convex ribs 130.

[0032] In some selectable embodiments of this application, recessed ribs 120 and convex ribs 130 are provided on the lower and rear chamber walls 110 of the compressor chamber. That is, recessed ribs 120 and convex ribs 130 are provided on both the bottom wall and the rear wall.

[0033] Compared to the case where recessed ribs 120 and convex ribs 130 are provided only on the lower or rear chamber wall 110 of the compressor chamber, this embodiment provides recessed ribs 120 and convex ribs 130 on both the lower and rear chamber walls 110 of the compressor chamber, thereby further reducing low-frequency vibrations compared to the conventional technology. Furthermore, this embodiment significantly reduces noise in the compressor chamber, thereby further improving the sound quality of the refrigeration and freezing equipment and further enhancing the user experience.

[0034] As shown in Figure 1-3, in some selectable embodiments of the present application, a chamber wall 110 or housing wall provided with reinforcing ribs includes a first section 111, a second section 112, and a third section 113 arranged sequentially along its longitudinal direction, wherein the height of the first section 111, the second section 112, and the third section 113 gradually increases along a first direction, and the first direction is perpendicular to the inner surface of the corresponding chamber wall 110 or housing wall.

[0035] Specifically, a first step is provided between the first section 111 and the second section 112, and a second step is provided between the second section 112 and the third section 113, with the height of the first step being greater than the height of the second step.

[0036] More preferably, the upper and lower ends of the first section 111 on the side closer to the second section 112 extend toward the third section 113, forming an upper arm and a lower arm. Specifically, the upper and lower arms are positioned on both the upper and lower sides of the second section 112 and extend toward the third section 113, with the upper arm extending toward the mounting hole of the third section 113 and the lower arm extending toward the outer edge of the third section 113.

[0037] As shown in Figure 1-3, in some selectable embodiments of this application, the recessed rib 120 is elongated and extends along the longitudinal direction of the corresponding chamber wall 110 or housing wall.

[0038] As shown in Figure 1-3, in some selectable embodiments of this application, the cross-section of the convex rib 130 is substantially square or substantially rectangular. The convex rib 130 is provided with mounting holes.

[0039] Specifically, two adjacent sides of a roughly square or rectangular shape are connected by an arc-shaped transition section, which reduces stress concentration.

[0040] As shown in Figure 1-3, in some selectable embodiments of this application, at least two parallel recessed ribs 120 are provided within the first section 111, the second section 112, and the third section 113, respectively.

[0041] As shown in Figure 1-3, in some selectable embodiments of this application, the recessed rib 120 provided in the first section 111 is the first recessed rib 121, the recessed rib 120 provided in the second section 112 is the second recessed rib 122, and the recessed rib 120 provided in the third section 113 is the third recessed rib 123.

[0042] Specifically, the first section 111 is provided with three parallel first recessed ribs 121, and the spacing between any adjacent first recessed ribs 121 is equal. The second section 112 is provided with three parallel second recessed ribs 122, and the spacing between any adjacent second recessed ribs 122 is equal. The width of the second recessed ribs 122 is smaller than the width of the first recessed ribs 121. The third section 113 is provided with two parallel third recessed ribs 123, and the width of the third recessed ribs 123 is smaller than the width of the first recessed ribs 121.

[0043] As shown in Figure 1-3, in some selectable embodiments of this application, the convex rib 130 provided within the first section 111 is the first convex rib 131, and the first convex rib 131 is located at the upper left corner of the first section 111.

[0044] The first concave rib 121, located at the uppermost part of the first section 111, has the shortest length, is located to the right of the first convex rib 131, and there is a certain gap between the first concave rib 121 and the first convex rib 131.

[0045] As shown in Figure 1-3, in some selectable embodiments of this application, the second section 112 is provided with at least two convex ribs 130, which are spaced parallel to each other along the width direction of the corresponding chamber wall 110 or housing wall.

[0046] As shown in Figure 1-3, in some selectable embodiments of this application, the convex rib 130 provided within the second section 112 is the second convex rib 132. There are two parallel convex ribs 130 within the second section 112.

[0047] Specifically, the two second convex ribs 132 within the second section 112 are located at the boundary between the first section 111 and the second section 112, and are located above and below the second section 112, respectively. There are three second concave ribs 122 within the second section 112, the three second concave ribs 122 are arranged in parallel, and the lengths of the three second concave ribs 122 are equal. The second concave rib 122 located above the second section 112 is located to the right of the corresponding second convex rib 132, the second concave rib 122 located below the second section 112 is located to the right of the corresponding second convex rib 132, and the second concave rib 122 located in the middle of the second section 112 is located to the right of the gap between the two second convex ribs 132.

[0048] As shown in Figure 4-10, in some selectable embodiments of this application, a sound-dampening device is installed inside or outside the compressor chamber.

[0049] During use, the silencing device can be positioned inside or outside the compressor compartment of the refrigerator. When noise from inside the compressor compartment propagates from the inside to the outside, it passes through the silencing device, and the noise is significantly reduced by the silencing effect of the device. At the same time, the concave ribs 120 and convex ribs 130 reduce the transmission of vibrations from the compressor to the housing wall or compartment wall 110, thereby reducing vibrations in the compressor compartment and the entire housing.

[0050] As shown in Figure 4-10, in some selectable embodiments of this application, a sound-dampening device is installed on the outside of the compressor chamber. Specifically, a foam layer is formed between the outer shell of the housing and the chamber wall 110 of the compressor chamber, and the sound-dampening device is provided within the foam layer.

[0051] During use, the sound-dampening device can be placed within the foam layer on the outside of the refrigerator's compressor compartment. When noise from inside the compressor compartment propagates from the inside to the outside, it passes through the sound-dampening device, and the sound-dampening effect of the device significantly reduces the noise. At the same time, the concave ribs 120 and convex ribs 130 reduce the transmission of vibrations from the compressor to the housing wall, thereby reducing vibrations in the compressor compartment and the entire housing.

[0052] As shown in Figure 4-10, in some selectable embodiments of this application, sound-dampening devices are installed both inside and outside the compressor chamber.

[0053] During use, the silencing devices can be placed inside and outside the compressor chamber of the refrigerator. When noise from the compressor chamber propagates from the inside to the outside, it passes through the silencing devices inside and outside the compressor chamber, and the noise is significantly reduced by the silencing effect of the silencing devices. At the same time, the concave ribs 120 and convex ribs 130 reduce the transmission of vibrations from the compressor to the housing wall and / or the chamber wall 110, thereby reducing vibrations in the compressor chamber and the entire housing.

[0054] In this embodiment, the noise reduction effect can be further improved by providing sound-dampening devices both inside and outside the compressor chamber.

[0055] As shown in Figure 4-10, in some selectable embodiments of this application, the sound silencing device includes a sound silencing body 210, the sound silencing body 210 is provided with at least one sound silencing cavity 240, the sound silencing body 210 is provided with heat dissipation holes 230 penetrating the sound silencing body 210, the peripheral wall of the heat dissipation holes 230 is provided with at least one first sound absorbing hole, each first sound absorbing hole is in communication with at least one sound silencing cavity 240. The corresponding chamber wall 110 is provided with first through-holes corresponding to the heat dissipation holes 230.

[0056] When the silencing device is in use, as noise in the compressor chamber propagates from the inside to the outside, it passes through the silencing body 210, and as the noise passes through the heat dissipation holes 230, it enters the corresponding silencing cavity 240 through the first sound absorption holes, and the noise is significantly reduced by the silencing effect of the silencing cavity 240.

[0057] As shown in Figure 5-10, in some selectable embodiments of the present application, the silencing device further includes a second sound-absorbing hole 220, of which there is at least one and is located on one side wall of the silencing body 210, each second sound-absorbing hole 220 communicating with at least one sound-absorbing cavity 240, and the opening of the second sound-absorbing hole 220 facing into the interior of the compressor chamber. When the silencing device is mounted on the outside of the chamber wall 110, the corresponding chamber wall 110 is provided with a second through-hole corresponding to the second sound-absorbing hole 220.

[0058] Specifically, the side wall of the sound-absorbing body 210, where the second sound-absorbing hole 220 is located, is the sound incidence surface 211. The second sound-absorbing hole 220 and the sound-absorbing cavity 240 form a blind hole-like structure.

[0059] The operation process of the sound-absorbing device in this embodiment is as follows. When in use, the sound-absorbing body 210 can be placed inside or outside the compressor chamber of the refrigerator, with the second sound-absorbing hole 220 facing inward towards the compressor chamber. When noise from inside the compressor chamber propagates from inside to outside, some of the noise passes through the sound-absorbing body 210 inside or outside the compressor chamber, and due to the shielding effect of the side wall of the sound-absorbing body 210, some of the noise enters the sound-absorbing cavity 240 through the second sound-absorbing hole 220. Other noise passes through the heat dissipation hole 230 and enters the corresponding sound-absorbing cavity 240 through the first sound-absorbing hole, and the noise is significantly reduced by the sound-absorbing effect of the sound-absorbing cavity 240.

[0060] In this embodiment, two types of sound absorption methods, side sound absorption and internal sound absorption, are employed simultaneously. Compared to the case where the second sound absorption holes 220 are provided only in the holes of the heat dissipation holes 230, providing the second sound absorption holes 220 on the side walls of the sound-absorbing body 210 further improves sound reduction, thereby further enhancing the user experience.

[0061] As shown in Figure 4-10, in some selectable embodiments of this application, the sound-dampening device is plate-shaped.

[0062] As shown in Figure 5-10, in some selectable embodiments of this application, there are at least two second sound-absorbing holes 220 on the sound-absorbing body 210, and the diameters of at least two of the second sound-absorbing holes 220 are different from each other.

[0063] Specifically, the side wall of the sound-absorbing body 210 is provided with second sound-absorbing holes 220 having at least two different hole diameters. For example, there may be two, three, four, five, six, seven, eight, nine, or ten different diameters.

[0064] The operating principle of the sound-absorbing device in this embodiment is as follows: When in use, the second sound-absorbing holes 220, which have different hole diameters, can absorb noise of different frequencies.

[0065] Therefore, compared to the case where only one type of hole diameter is used for the second sound-absorbing holes 220 on the side wall of the sound-absorbing body 210, this embodiment employs second sound-absorbing holes 220 with different hole diameters, thereby expanding the sound-absorbing frequency range of the sound-absorbing device. This allows the sound-absorbing device to have a superior sound-absorbing effect and further improves the user experience.

[0066] As shown in Figure 5-10, in some selectable embodiments of this application, the diameter of each second sound-absorbing hole 220 is smaller than the diameter of the heat-dissipating hole 230.

[0067] In some selectable embodiments of this application, at least one of the sound-absorbing cavities 240 exhibits a labyrinthine structure.

[0068] Compared to sound-absorbing cavities 240 with sound-flow structures, honeycomb structures, or straight-pipe structures, in this embodiment, the depth of the labyrinthine sound-absorbing cavities 240 is greater, significantly extending the sound propagation path and enabling the formation of an acoustic superstructure, thereby further improving the noise reduction effect of the sound-absorbing device.

[0069] In some selectable embodiments of this application, at least one sound-absorbing cavity 240 exhibits a sound-flow structure.

[0070] In some selectable embodiments of this application, at least one sound-absorbing cavity 240 exhibits a honeycomb structure.

[0071] In some selectable embodiments of this application, at least one sound-dampening cavity 240 has a straight pipe structure.

[0072] In some selectable embodiments of this application, the heat dissipation holes 230 are located in the center of the sound-absorbing body 210, and the first sound-absorbing holes are distributed around the heat dissipation holes 230.

[0073] In some selectable embodiments of this application, the sound-absorbing cavity 240 communicating with the second sound-absorbing hole 220 is not in communication with the sound-absorbing cavity 240 communicating with the first sound-absorbing hole. In some alternative embodiments of this application, the sound-absorbing cavity 240 communicating with the second sound-absorbing hole 220 is in communication with the sound-absorbing cavity 240 communicating with the first sound-absorbing hole.

[0074] In this embodiment, the sound-absorbing cavity 240 corresponding to the second sound-absorbing hole 220 and the sound-absorbing cavity 240 corresponding to the first sound-absorbing hole are not in communication. That is, the second sound-absorbing hole 220 and the heat-dissipating hole 230 are not in communication, which further improves the sound-absorbing effect.

[0075] In some selectable embodiments of this application, the sound-absorbing cavity 240 communicating with the second sound-absorbing hole 220 and the sound-absorbing cavity 240 communicating with the first sound-absorbing hole do not communicate with each other, the sound-absorbing cavity 240 communicating with the second sound-absorbing hole 220 is closer to the inside of the sound-absorbing body 210, and the sound-absorbing cavity 240 communicating with the first sound-absorbing hole is closer to the outside of the sound-absorbing body 210.

[0076] In this embodiment, the above arrangement makes the production and manufacturing of the sound-dampening device easier.

[0077] In some of the selectable embodiments of this application, the refrigeration / freezing device is a refrigerator.

[0078] In some of the selectable embodiments of this application, the refrigeration and freezing device is a freezer.

[0079] Up to this point, those skilled in the art will recognize that, although several exemplary embodiments of this application have been described in detail in the text, many other variations or modifications that conform to the principles of this application can be directly identified or inferred based on the disclosures of this application without departing from the spirit and scope of this application. Accordingly, the scope of this application should be understood and recognized as encompassing all of these other variations or modifications.

Claims

1. A refrigeration and freezing device, including a casing, The housing includes an outer shell and a compressor chamber that are connected to each other. The aforementioned outer shell includes the housing wall, The compressor chamber includes the chamber walls, Reinforcing ribs are provided on at least one of the housing walls and / or at least one of the chamber walls, The reinforcing ribs include concave ribs and convex ribs. The housing is provided with a noise reduction device for reducing noise generated at least inside the compressor chamber. Refrigeration and freezing equipment.

2. The reinforcing ribs are provided on the lower and / or rear walls of the compressor chamber. The refrigeration and freezing apparatus according to claim 1.

3. The chamber wall or housing wall provided with the reinforcing ribs includes a first section, a second section, and a third section arranged sequentially along its longitudinal direction. The height of the first section, the second section, and the third section gradually increases along the first direction. The first direction is perpendicular to the inner surface of the corresponding chamber wall or housing wall. The refrigeration and freezing apparatus according to claim 1.

4. The aforementioned recessed rib is elongated and extends along the longitudinal direction of the corresponding chamber wall or housing wall. The cross-section of the aforementioned convex rib is approximately square or rectangular. The refrigeration and freezing apparatus according to claim 3.

5. Each of the first, second, and third sections is provided with at least two parallel-arranged recessed ribs. The refrigeration and freezing apparatus according to claim 3.

6. The convex rib is provided in the second section at a position close to the first section. The refrigeration and freezing apparatus according to claim 3.

7. At least two of the convex ribs are provided within the second section, At least two of the aforementioned protruding ribs are provided parallel to each other and spaced apart along the width direction of the corresponding chamber wall or housing wall. The refrigeration and freezing apparatus according to claim 6.

8. The sound-dampening device is installed inside or outside the compressor chamber. A foamed layer is formed between the outer shell and the chamber wall of the compressor chamber. The sound-dampening device is provided within the foam layer. The refrigeration and freezing apparatus according to claim 1.

9. The sound-dampening device includes the sound-dampening body, At least one sound-dampening cavity is provided inside the sound-dampening body. The sound-dampening body is provided with a first heat dissipation hole that penetrates the sound-dampening body. At least one first sound-absorbing hole is provided on the peripheral wall of the first heat dissipation hole. Each of the first sound-absorbing holes communicates with at least one of the sound-absorbing cavities. The corresponding chamber wall is provided with a first through-hole corresponding to the first heat dissipation hole. The refrigeration and freezing apparatus according to claim 8.

10. The sound-absorbing device further includes a second sound-absorbing hole, The aforementioned second sound-absorbing hole is at least one and is located on one side wall of the sound-absorbing body. Each of the second sound-absorbing holes communicates with at least one of the sound-absorbing cavities. The opening of the second sound-absorbing hole faces the inside of the compressor chamber. When the sound-dampening device is installed on the outside of the room wall, the corresponding room wall is provided with a second through-hole corresponding to the second sound-absorbing hole. The aforementioned second sound-absorbing holes number at least two, and the diameters of at least two of the aforementioned second sound-absorbing holes are different from each other. The diameter of each of the second sound-absorbing holes is smaller than the diameter of the first heat-dissipating holes. At least one of the sound-dampening cavities is a labyrinth structure, a sound-flow structure, a honeycomb structure, or a straight-pipe structure. The sound-absorbing cavity communicating with the second sound-absorbing hole and the sound-absorbing cavity communicating with the first sound-absorbing hole are not in communication. The sound-absorbing cavity communicating with the second sound-absorbing hole is closer to the inside of the sound-absorbing body, and the sound-absorbing cavity communicating with the first sound-absorbing hole is closer to the outside of the sound-absorbing body. The refrigeration and freezing apparatus according to claim 9.

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