Bottom plate and press chamber for refrigerator press chamber

Abstract

The utility model provides a bottom plate and a press chamber for a refrigerator press chamber. The bottom plate includes a bottom wall portion and a horizontal extension portion. The bottom wall portion is configured to serve as the bottom wall of the chamber space of the press chamber to limit the chamber space of the press chamber. The horizontal extension portion is horizontally arranged, in the shape of a long strip extending in the transverse direction, and the rear edge of the horizontal extension portion is connected to the front edge of the bottom wall portion. The horizontal extension portion and the bottom wall portion are integrally formed so that the dynamic stiffness of the bottom plate is jointly determined by the bottom wall portion and the horizontal extension portion, thereby making the dynamic stiffness of the bottom plate not equal to the dynamic stiffness of the bottom wall portion. By arranging the integrally formed horizontal extension portion on the bottom wall portion, the dynamic stiffness of the bottom plate of the press chamber can be improved, the overall vibration of the bottom plate can be reduced, and the first-order natural vibration frequency of the bottom plate can be increased, so that the first-order natural vibration frequency of the bottom plate is different from the rotation frequency of the compressor, thereby avoiding resonance between the bottom plate and the compressor, reducing the noise of the press chamber, and achieving the effect of improving user experience.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a bottom plate and a press bin for a refrigerator press bin. Background Art

[0002] As the requirements for the refrigeration effect of refrigerators increase, high-speed compressors are gradually widely used. Most existing compressors are installed on a support plate at the bottom of the compressor compartment, and the support plate is fixed to the bottom of the refrigerator to support the compressor.

[0003] However, since the compressor generates vibrations during operation, the support plate vibrates along with the compressor, causing the support plate to make noise due to the vibration, or even causing resonance between the support plate and the compressor, thereby reducing the user experience. Utility Model Content

[0004] In view of the above-mentioned problems, the utility model is proposed to provide a bottom plate and a press chamber for a refrigerator press chamber that overcome the above-mentioned problems or at least partially solve the above-mentioned problems, and can solve the problem that the compressor support plate vibrates with the compressor, causing the support plate to make noise due to vibration, and even causing resonance between the support plate and the compressor, thereby achieving the purpose of improving user experience.

[0005] Specifically, the utility model provides a bottom plate for a refrigerator press compartment, comprising:

[0006] A bottom wall portion is configured to serve as a bottom wall of the inner space of the press chamber to define the inner space of the press chamber.

[0007] The horizontal extension portion is horizontally arranged and is in the shape of a long strip extending in the transverse direction, and the rear edge of the horizontal extension portion is connected to the front edge of the bottom wall portion. The horizontal extension portion and the bottom wall portion are integrally formed so that the dynamic stiffness of the bottom plate is jointly determined by the bottom wall portion and the horizontal extension portion, thereby making the dynamic stiffness of the bottom plate not equal to the dynamic stiffness of the bottom wall portion.

[0008] Optionally, a first flange folded downward is integrally formed on the front edge of the horizontally extending portion.

[0009] Optionally, a ratio between a width of the horizontally extending portion and a width of the bottom wall portion is 0.08 to 0.2.

[0010] A ratio between a width of the first flange and a width of the horizontally extending portion is 0.25 to 1.

[0011] A ratio between a length of the horizontally extending portion and a length of the bottom wall portion is 0.9 to 1.

[0012] Optionally, the bottom wall portion includes a first area and a second area arranged along the front-to-rear direction.

[0013] The second area is recessed downward relative to the first area to form a recessed groove.

[0014] A plurality of mounting protrusions are arranged on the bottom wall of the recessed groove, and the mounting protrusions are configured to mount a compressor of a refrigerator.

[0015] Optionally, at least one convex strip extending in the transverse direction is arranged on the first area.

[0016] A plurality of convex ribs are arranged on the front side of each convex strip, and the plurality of convex ribs are arranged in sequence along the transverse direction, and each of the convex ribs is a long strip convex rib extending along the front-rear direction.

[0017] Optionally, a second flange folded upward is integrally formed on the rear edge of the bottom wall portion.

[0018] The second flange is provided with a mounting hole, or the second flange is provided with a magnet or an iron sheet.

[0019] The utility model also provides a press chamber for a refrigerator, comprising:

[0020] Bottom plate, the bottom plate is the above-mentioned bottom plate.

[0021] Two longitudinal beams extend in the front-rear direction, and both ends of the bottom wall portion are respectively mounted on the two longitudinal beams.

[0022] The cover plate includes a front wall portion, the front wall portion serving as the front wall of the inner space of the press chamber to define the inner space of the press chamber. The lower edge of the front wall portion is located at the front edge of the bottom wall portion.

[0023] Optionally, the cover plate further includes a top wall portion, wherein the top wall portion is disposed on an upper side of the bottom wall portion, and a front edge of the top wall portion is connected to an upper edge of the front wall portion.

[0024] The horizontal extension is located between the two longitudinal beams.

[0025] The press chamber also includes:

[0026] Two upright posts, each of which is arranged at the rear end of one of the longitudinal beams.

[0027] A closing plate is mounted on the rear end of the top wall, the second flange of the bottom wall, and the rear surface of each of the columns by magnetic attraction.

[0028] Optionally, the press chamber further includes a silencer, and two side walls arranged opposite to each other and used to define the inner space of the press chamber, and each of the side walls is provided with a first through hole passing therethrough.

[0029] The silencer has a second through hole passing through it. The silencer is installed on the side wall and is located inside the side wall, on the inner side or on the outer side of the side wall.

[0030] The first through hole is arranged opposite to the corresponding second through hole.

[0031] Optionally, the silencing device has one or more silencing cavities, and at least one sound absorbing opening is provided on the peripheral wall of the second through hole, and each of the sound absorbing openings is connected to at least one of the silencing cavities.

[0032] The silencing device is made of metamaterial, the silencing cavity is bent and extended, and the silencing cavity is arranged on the radial outside of the second through hole.

[0033] The plurality of sound absorbing openings are distributed at intervals along the circumference of the second through hole.

[0034] The plurality of sound absorbing openings include a first sound absorbing opening located below the axis of the second through hole and a second sound absorbing opening located above the axis of the second through hole.

[0035] An area of ​​the first sound absorbing opening is larger than an area of ​​the second sound absorbing opening.

[0036] The depth of the muffler cavity communicated with by the first sound absorbing opening is smaller than the depth of the muffler cavity communicated with by the second sound absorbing opening.

[0037] The number of the first sound absorbing openings is less than the number of the second sound absorbing openings.

[0038] In the bottom plate of the refrigerator compressor compartment of the utility model, the dynamic stiffness of the bottom plate of the compressor compartment can be improved by providing an integrally formed horizontal extension portion on the bottom wall. On the one hand, the stiffness and strength of the bottom plate are improved to provide a more solid support for the compressor and reduce the overall vibration of the bottom plate. On the other hand, the first-order natural vibration frequency of the bottom plate can be increased so that the first-order natural vibration frequency of the bottom plate is different from the rotation frequency of the compressor, that is, the first-order natural vibration frequency of the bottom plate avoids the vibration frequency of the compressor, thereby avoiding resonance between the bottom plate and the compressor, reducing the noise of the compressor compartment, and achieving the effect of improving user experience.

[0039] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] 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:

[0041] Figure 1 is a schematic structural diagram of a base plate according to an embodiment of the utility model;

[0042] Figure 2 is a schematic structural diagram of a base plate according to an embodiment of the utility model;

[0043] Figure 3 is a schematic structural diagram of a press chamber according to an embodiment of the utility model;

[0044] Figure 4 is a schematic cross-sectional view of a press chamber according to an embodiment of the utility model;

[0045] Figure 5 It is a schematic structural diagram of a silencing device according to an embodiment of the utility model.

[0046] List of reference numerals: 100, bottom plate; 110, bottom wall; 121, first flange; 122, second flange; 130, horizontal extension; 200, side wall; 210, first through hole; 400, silencer; 410, second through hole; 420, sound absorption opening; 421, first sound absorption opening; 422, second sound absorption opening; 430, silencer chamber; 500, compressor; 610, first area; 611, convex strip; 612, convex rib; 620, second area; 621, mounting protrusion; 710, longitudinal beam; 720, column. DETAILED DESCRIPTION

[0047] Refer to the following Figures 1 to 5 To describe the bottom plate and press chamber for a refrigerator press chamber of an embodiment of the utility model. 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. Thus, 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 utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0048] Unless otherwise clearly specified 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 of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present utility model according to the specific circumstances.

[0049] 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.

[0050] 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 utility model. 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.

[0051] Figure 1 is a schematic structural diagram of a bottom plate according to an embodiment of the utility model, such as Figure 1 As shown, and refer to Figures 2 to 5 The embodiment of the utility model provides a bottom plate 100 for a refrigerator press chamber, comprising a bottom wall portion 110 and a horizontal extension portion 130. The bottom wall portion 110 is configured to serve as the bottom wall of the chamber space of the press chamber to limit the chamber space of the press chamber. The horizontal extension portion 130 is horizontally arranged in the shape of a long strip extending in the transverse direction, and the rear edge of the horizontal extension portion 130 is connected to the front edge of the bottom wall portion 110. The horizontal extension portion 130 and the bottom wall portion 110 are integrally formed so that the dynamic stiffness of the bottom plate 100 is jointly determined by the bottom wall portion 110 and the horizontal extension portion 130, thereby making the dynamic stiffness of the bottom plate 100 not equal to the dynamic stiffness of the bottom wall portion 110.

[0052] The press chamber is usually located at the rear lower part of the refrigerator, and the front lower part of the refrigerator is set as a storage space. The rear edge of the bottom plate 100 is usually fixedly connected to the rear wall of the refrigerator, and the connection strength is relatively high. The front edge of the bottom plate 100 is usually only abutted or spaced with the front wall of the refrigerator press chamber, and its connection strength is relatively weaker than the rear edge. Therefore, the front edge of the bottom plate 100 is more likely to generate vibration and noise.

[0053] In the present embodiment, the horizontal extension portion 130 extends backward from the front edge of the bottom wall portion 110. By providing the integrally formed horizontal extension portion 130 on the bottom wall portion 110, the dynamic stiffness of the bottom plate 100 of the compressor chamber can be improved. On the one hand, the stiffness and strength of the bottom plate 100 are improved to provide a more solid support for the compressor 500 and reduce the overall vibration of the bottom plate 100. On the other hand, the first-order natural vibration frequency of the bottom plate 100 can be increased so that the first-order natural vibration frequency of the bottom plate 100 is different from the rotation frequency of the compressor 500, that is, the first-order natural vibration frequency of the bottom plate 100 avoids the vibration frequency of the compressor 500, thereby avoiding resonance between the bottom plate 100 and the compressor 500, reducing the compressor chamber noise, and achieving the effect of improving user experience.

[0054] Preferably, the horizontal extension portion 130 is fixedly connected to the bottom end of the front wall of the press chamber, so that there is no gap between the bottom plate 100 and the front wall of the press chamber, so as to improve the noise reduction effect of the press chamber, and also prevent rodents and insects from entering through the gap between the bottom plate 100 and the front wall of the press chamber, causing odor in the press chamber and posing a safety hazard.

[0055] In some embodiments of the bottom plate of the present invention, Figure 1 As shown, the front edge of the horizontal extension portion 130 is integrally formed with a first flange 121 folded downward.

[0056] In this embodiment, the first flange 121 extends downward from the front edge of the horizontal extension portion 130. Preferably, the first flange 121 is arranged perpendicular to the horizontal extension portion 130. By arranging the first flange 121 formed in one piece on the horizontal extension portion 130, the dynamic stiffness of the bottom plate 100 of the press chamber can be further improved. Moreover, the space below the bottom wall portion 110 toward the inside and outside of the box body is larger than the space above the bottom wall portion 110 toward the inside of the box body. The first flange 121 extends downward from the front edge of the horizontal extension portion 130, so that the first flange 121 is less restricted, and the width of the flange portion can be increased to further increase the first-order natural vibration frequency of the bottom plate 100 to better avoid resonance.

[0057] In some embodiments of the bottom plate of the present invention, Figure 2As shown, the ratio between the width b of the horizontal extension portion 130 and the width a of the bottom wall portion 110 is 0.08 to 0.2. The ratio between the width of the first flange 121 and the width of the horizontal extension portion 130 is 0.25 to 1. The ratio between the length of the horizontal extension portion 130 and the length of the bottom wall portion 110 is 0.9 to 1.

[0058] In this embodiment, when the ratio between the width b of the horizontal extension portion 130 and the width a of the bottom wall portion 110 is less than 0.08, the horizontal extension portion 130 has too little effect on the dynamic stiffness of the bottom plate 100 and cannot effectively change the dynamic stiffness of the bottom plate 100. When the ratio between the width of the first flange 121 and the width of the horizontal extension portion 130 is less than 0.25, or when the ratio between the length of the horizontal extension portion 130 and the length of the bottom wall portion 110 is less than 0.9, the first flange 121 has too little effect on the dynamic stiffness of the bottom plate 100 and cannot effectively change the dynamic stiffness of the bottom plate 100. When the ratio between the width b of the horizontal extension portion 130 and the width a of the bottom wall portion 110 is greater than 0.2, the horizontal extension portion 130 occupies too much space in the refrigerator, which is not conducive to installing other components. Since the space below the bottom wall 110 toward the inside and outside of the box is relatively large, the first flange 121 extends downward from the front edge of the horizontal extension 130, so that the width of the first flange 121 can be made longer to better avoid resonance. When the ratio between the width of the first flange 121 and the width of the horizontal extension 130 is greater than 1, or when the ratio between the length of the horizontal extension 130 and the length of the bottom wall 110 is greater than 1, increasing the width of the first flange 121 is not very helpful in improving the dynamic strength and the first-order natural vibration frequency of the bottom plate 100, and more materials are required, which is not conducive to saving production costs.

[0059] Preferably, the ratio between the width b of the horizontal extension portion 130 and the width a of the bottom wall portion 110 is 0.1. The ratio between the width of the first flange 121 and the width of the horizontal extension portion 130 is 1. The ratio between the length of the horizontal extension portion 130 and the length of the bottom wall portion 110 is 0.95.

[0060] In some embodiments of the bottom plate of the present invention, Figure 1 and Figure 2 As shown, the bottom wall portion 110 includes a first area 610 and a second area 620 arranged in the front-to-back direction. The second area 620 is recessed downward relative to the first area 610 to form a recessed groove. A plurality of mounting protrusions 621 are arranged on the bottom wall of the recessed groove, and the mounting protrusions 621 are configured to mount the compressor 500 of the refrigerator.

[0061] Preferably, the compressor 500 is installed in the second area 620 near the rear edge of the bottom wall 110, and the side of the bottom wall 110 near the rear edge is fixedly connected to the rear wall of the refrigerator. On the one hand, the compressor 500 is close to the rear wall of the refrigerator, giving more space to the storage space in front of the compressor 500. On the other hand, the connection between the rear edge and the rear wall can provide a firm support for the compressor 500, reduce the vibration amplitude of the compressor 500 when it is running, and make the center of gravity of the compressor 500 move backward, thereby reducing the pressure of the longitudinal beam 710 connected to the bottom plate 100.

[0062] In this embodiment, when installing the compressor 500, the machine foot of the compressor 500 is fixedly connected to the mounting protrusion 621, and the compressor 500 is fixedly connected to the bottom plate 100 to fix the position of the compressor 500. In addition, the recessed groove and the mounting protrusion 621 make the bottom plate 100 stronger, and the mounting protrusion 621 can also reduce the vibration transmission from the compressor 500 to the bottom plate 100, thereby reducing the vibration of the entire compressor 500 compartment and the bottom plate 100, and reducing the noise generated by the bottom plate 100 due to vibration.

[0063] Furthermore, a plurality of mounting protrusions 621 are provided with mounting posts, and the compressor 500 is connected to the mounting posts through the machine feet of the compressor 500. A foot pad is provided between the machine feet of the compressor 500 and the bottom plate 100 to reduce the influence of the vibration of the compressor 500 on the bottom plate 100, further reducing the noise generated by the bottom plate 100 due to vibration.

[0064] In some embodiments of the bottom plate of the present invention, Figure 1 As shown, at least one convex strip 611 extending in the transverse direction is provided on the first area 610. A plurality of convex ribs 612 are provided on the front side of each convex strip 611, and the plurality of convex ribs 612 are sequentially arranged in the transverse direction, and each convex rib 612 is a long strip convex rib 612 extending in the front-rear direction.

[0065] In this embodiment, the convex strip 611 on the first area 610 and the plurality of convex ribs 612 sequentially arranged along the transverse edge are arranged at intervals in front and back, thereby increasing the strength of the bottom plate 100, making the bottom plate 100 less susceptible to damage, and reducing the noise generated by the bottom plate 100 due to vibration.

[0066] In some embodiments of the bottom plate of the present invention, Figure 1 As shown, the rear edge of the bottom wall portion 110 is integrally formed with a second flange 122 folded upward.

[0067] In this embodiment, the bottom plate 100 is connected to the rear wall of the refrigerator through the second flange 122 extending upward from the rear side of the bottom plate 100. Alternatively, the bottom plate 100 is connected to a detachable closing plate on the rear wall of the refrigerator through the second flange 122 extending upward from the rear side of the bottom plate 100, and the closing plate is used to cover or expose the opening formed on the rear wall of the refrigerator and connected to the compressor compartment. The second flange 122 folded upward formed integrally at the rear edge of the bottom wall portion 110 has a higher strength than the structure of the split design, and improves the rigidity and strength of the bottom plate 100, avoids resonance between the bottom plate 100 and the compressor 500, and improves the user experience.

[0068] Furthermore, a mounting hole is provided on the second flange 122, and the second flange 122 is connected to the rear wall or the closing plate of the refrigerator by means of threads.

[0069] In this embodiment, the threaded connection has better stability, which improves the connection stability between the bottom plate 100 and the rear wall or the closing plate of the refrigerator.

[0070] Alternatively, taking the example of the third flange being connected to the closed plate, a magnet is provided on the second flange 122, and an iron sheet is provided on the closed plate. Alternatively, an iron sheet is provided on the second flange 122, and a magnet is provided on the closed plate. The second flange 122 is connected to the closed plate by magnetic attraction.

[0071] In this embodiment, compared with the threaded connection, the magnetic connection avoids the situation where thread slippage occurs during manufacturing or maintenance, which affects the production or maintenance efficiency, and improves the user experience.

[0072] The present utility model also provides a press bin for a refrigerator. In some embodiments of the press bin of the present utility model, such as Figure 3 As shown, the press chamber includes a bottom plate 100, a cover plate (not shown) and two longitudinal beams 710 extending in the front-rear direction. The bottom plate 100 is the bottom plate 100 in any of the above embodiments. The two ends of the bottom wall portion 110 are respectively mounted on the two longitudinal beams 710. The cover plate includes a front wall portion, which serves as the front wall of the chamber space of the press chamber to define the chamber space of the press chamber. The lower edge of the front wall portion is at the front edge of the bottom wall portion 110.

[0073] In this embodiment, two longitudinal beams 710 are respectively located on the left and right sides of the bottom plate 100 to support the bottom wall portion 110. By providing an integrally formed horizontal extension portion 130 on the bottom wall portion 110, the dynamic stiffness of the bottom plate 100 of the press chamber can be improved. On the one hand, the stiffness and strength of the bottom plate 100 are improved to provide a more solid support for the compressor 500 and reduce the overall vibration of the bottom plate 100. On the other hand, the first-order natural vibration frequency of the bottom plate 100 can be increased, so that the first-order natural vibration frequency of the bottom plate 100 is different from the rotation frequency of the compressor 500, that is, the first-order natural vibration frequency of the bottom plate 100 avoids the vibration frequency of the compressor 500, thereby avoiding resonance between the bottom plate 100 and the compressor 500, reducing the noise of the press chamber, and achieving the effect of improving user experience.

[0074] In some embodiments of the press chamber of the present invention, the cover plate further comprises a top wall portion, which is arranged on the upper side of the bottom wall portion 110, and the front edge of the top wall portion is connected to the upper edge of the front wall portion. The horizontal extension portion 130 is located between the two longitudinal beams 710. Figure 3 As shown, the press chamber further includes two columns 720 and a closing plate. Each column 720 is arranged at the rear end of a longitudinal beam 710. The closing plate is mounted on the rear end of the top wall, the second flange 122 of the bottom wall 110, and the rear surface of each column 720 by magnetic attraction.

[0075] In this embodiment, the top wall, the front wall, the rear wall, the two side walls 200 and the bottom plate 100 work together to define the installation space of the press chamber. The columns 720 are located on the left and right sides of the bottom plate 100 and are fixedly connected to a longitudinal beam 710 respectively, which improves the stability of the press chamber and defines the opening at the rear side of the chamber space of the press chamber. The closing plate is used to cover or expose the opening at the rear side of the chamber space of the press chamber, which facilitates the installation and maintenance of the parts in the chamber space of the press chamber.

[0076] In some embodiments of the press chamber of the present utility model, as Figure 4 As shown, the press chamber further includes a silencer 400, and two side walls 200 arranged opposite to each other and used to define the chamber space of the press chamber, and each side wall 200 is provided with a first through hole 210 passing through it. The silencer 400 has a second through hole 410 passing through it. The silencer 400 is installed on the side wall 200, and is located inside the side wall 200, on the inner side or the outer side of the side wall 200. The first through hole 210 is arranged opposite to the corresponding second through hole 410.

[0077] In this embodiment, the interior of the press compartment is connected to the outside of the refrigeration and freezing device through the first through hole 210 and the second through hole 410, thereby achieving the purpose of heat dissipation inside the press compartment. The silencer 400 reduces the noise generated outward from the press compartment through the silencing channel circumferentially of the first through hole 210, thereby preventing the user from still being subjected to large noise and improving the user experience.

[0078] In some embodiments of the press chamber of the present utility model, as Figure 5 As shown, the silencer 400 has one or more silencer cavities 430, and at least one sound absorption opening 420 is provided on the peripheral wall of the second through hole 410, and each sound absorption opening 420 is connected to at least one silencer cavity 430. The silencer 400 is made of metamaterial, and the silencer cavity 430 is bent and extended, and the silencer cavity 430 is arranged radially outside the second through hole 410. The plurality of sound absorption openings 420 are distributed at intervals along the circumference of the second through hole 410.

[0079] In this embodiment, a sound-absorbing channel is provided inside the silencer 400, and the sound-absorbing channel of the silencer 400 is connected to the second through hole 410 so that the noise is consumed in the sound-absorbing channel. The sound-absorbing channel may be a resonant cavity. Alternatively, the sound-absorbing channel may also be a sound-absorbing cavity 430 having a labyrinth structure, an acoustic flow structure, a honeycomb structure or a straight tube structure. The metamaterial may be a sound-absorbing metamaterial or a porous material to absorb the noise. When the noise passes through the second through hole 410, the sound-absorbing openings 420 spaced apart circumferentially from the second through hole 410 enter the sound-absorbing cavity, so that the noise is effectively consumed after passing through the sound-absorbing cavity 430.

[0080] In some embodiments of the press chamber of the present utility model, as Figure 4 and Figure 5 As shown, the plurality of sound absorbing openings 420 include a first sound absorbing opening 421 located below the axis of the second through hole 410 and a second sound absorbing opening 422 located above the axis of the second through hole 410. The area of ​​the first sound absorbing opening 421 is larger than that of the second sound absorbing opening 422.

[0081] In this embodiment, on the one hand, since the first sound absorption opening 421 is mainly used to reduce the noise of high-frequency sound waves, and the second sound absorption opening 422 is mainly used to reduce the noise of low-frequency sound waves, the area of ​​the second sound absorption opening 422 is smaller than that of the first sound absorption opening 421, which is more conducive to improving the noise reduction effect of the second sound absorption opening 422 on low-frequency sound waves, and more conducive to improving the noise reduction effect of the first sound absorption opening 421 on high-frequency sound waves, thereby improving the noise reduction effect of the compressor compartment, thereby reducing the noise emitted by the refrigeration and freezing device, so as to further improve the user experience. On the other hand, since the area of ​​the second sound absorption opening 422 is smaller than that of the first sound absorption opening 421, it is more conducive to dust removal and cleaning of the first sound absorption opening 421 with the opening facing upward and the muffler cavity 430 connected to the first sound absorption opening 421.

[0082] In some embodiments of the press chamber of the present utility model, as Figure 5 As shown, the depth of the muffler cavity 430 connected to the first sound absorbing opening 421 is smaller than the depth of the muffler cavity 430 connected to the second sound absorbing opening 422 .

[0083] In this embodiment, on the one hand, since the muffler cavity 430 includes the muffler cavity 430 connected to the second sound absorption opening 422 and the muffler cavity 430 connected to the first sound absorption opening 421, the depth of the muffler cavity 430 connected to the second sound absorption opening 422 is greater than the depth of the muffler cavity 430 connected to the first sound absorption opening 421. Therefore, based on the mechanism that the wavelength of low-frequency sound waves is longer than the wavelength of high-frequency sound waves, the muffler cavity 430 connected to the second sound absorption opening 422 is mainly used to reduce the noise of low-frequency sound waves, and the muffler cavity 430 connected to the first sound absorption opening 421 is mainly used to reduce the noise of high-frequency sound waves. In other words, the muffler device 400 can be used for both low-frequency noise reduction and high-frequency noise reduction. The muffler device 400 has a wide action band, a wide-band noise reduction effect and a good noise reduction effect, so that the compressor compartment can be effectively noise-reduced, the noise reduction effect of the refrigeration and freezing device is ensured, and the user experience is improved.

[0084] On the other hand, since the opening of the second sound absorption opening 422 connected to the muffler cavity 430 connected to the second sound absorption opening 422 faces downward, and the opening of the first sound absorption opening 421 connected to the muffler cavity 430 connected to the first sound absorption opening 421 faces upward. When in use, dust is not easy to enter the muffler cavity 430 connected to the second sound absorption opening 422, and the dust has little effect on the muffler cavity 430 connected to the second sound absorption opening 422. In addition, since the main frequency generated by the press chamber is low-frequency noise, even if dust enters the muffler cavity 430 connected to the first sound absorption opening 421, it will not have a significant impact on the noise reduction of the press chamber. Therefore, this design reduces the impact of dust on the noise reduction effect of the press chamber. In addition, since the depth of the muffler cavity 430 connected to the first sound absorption opening 421 is shallow, it is easier to clean and dust the muffler cavity 430 connected to the first sound absorption opening 421. The impact of dust on the noise reduction effect during use is reduced, so that the muffler device 400 has a good noise reduction effect.

[0085] In some embodiments of the press chamber of the present utility model, as Figure 5 As shown, the number of the first sound absorbing openings 421 is less than the number of the second sound absorbing openings 422 .

[0086] In this embodiment, since the number of the second sound absorption openings 422 is greater than the number of the first sound absorption openings 421, the number of the muffler cavities 430 connected to the second sound absorption openings 422 is greater than the number of the muffler cavities 430 connected to the first sound absorption openings 421. In addition, since the noise of the compressor compartment is mainly low-frequency noise, it is more conducive to the muffler device 400 to reduce the noise of the low-frequency sound waves, which can be more conducive to improving the noise reduction effect of the compressor compartment, thereby reducing the noise generated outward by the refrigeration and freezing device.

[0087] 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 from the contents 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 such other variations or modifications.

Claims

1. A bottom plate for a refrigerator press compartment, characterized in that: include: A bottom wall portion, the bottom wall portion being configured to serve as a bottom wall of the inner space of the press chamber to define the inner space of the press chamber; The horizontal extension portion is horizontally arranged and is in the shape of a long strip extending in the transverse direction, and the rear edge of the horizontal extension portion is connected to the front edge of the bottom wall portion; the horizontal extension portion and the bottom wall portion are integrally formed so that the dynamic stiffness of the bottom plate is jointly determined by the bottom wall portion and the horizontal extension portion, thereby making the dynamic stiffness of the bottom plate not equal to the dynamic stiffness of the bottom wall portion.

2. The base plate according to claim 1, characterized in that A first flange folded downward is integrally formed on the front edge of the horizontally extending portion.

3. The base plate according to claim 2, characterized in that: The ratio between the width of the horizontal extension portion and the width of the bottom wall portion is 0.08 to 0.2; The ratio between the width of the first flange and the width of the horizontal extension portion is 0.25 to 1; A ratio between a length of the horizontally extending portion and a length of the bottom wall portion is 0.9 to 1.

4. The base plate according to claim 1, characterized in that: The bottom wall portion includes a first area and a second area arranged along the front-to-back direction; The second area is recessed downward relative to the first area to form a recessed groove; A plurality of mounting protrusions are arranged on the bottom wall of the recessed groove, and the mounting protrusions are configured to mount a compressor of a refrigerator.

5. The base plate according to claim 4, characterized in that The first area is provided with at least one convex strip extending in the transverse direction; A plurality of convex ribs are arranged on the front side of each convex strip, and the plurality of convex ribs are arranged in sequence along the transverse direction, and each of the convex ribs is a long strip convex rib extending along the front-rear direction.

6. The base plate according to claim 1, characterized in that The rear edge of the bottom wall portion is integrally formed with a second flange that is folded upward; The second flange is provided with a mounting hole, or the second flange is provided with a magnet or an iron sheet.

7. A press chamber for a refrigerator, characterized in that: include: A bottom plate, wherein the bottom plate is the bottom plate according to any one of claims 1 to 6; Two longitudinal beams extending in the front-rear direction, and the two ends of the bottom wall portion are respectively mounted on the two longitudinal beams; The cover plate includes a front wall portion, which serves as a front wall of the inner space of the press chamber to limit the inner space of the press chamber; the lower edge of the front wall portion is located at the front edge of the bottom wall portion.

8. The press chamber according to claim 7, characterized in that: The cover plate further comprises a top wall portion, the top wall portion is arranged on the upper side of the bottom wall portion, and the front edge of the top wall portion is connected to the upper edge of the front wall portion; The horizontal extension portion is located between the two longitudinal beams; The press chamber also includes: Two columns, each of which is arranged at the rear end of one of the longitudinal beams; A closing plate is mounted on the rear end of the top wall, the second flange of the bottom wall, and the rear surface of each of the columns by magnetic attraction.

9. The press chamber according to claim 7, characterized in that: The press chamber further comprises a muffler, and two side walls arranged opposite to each other and used to define the chamber space of the press chamber, each of the side walls being provided with a first through hole penetrating therethrough; The muffler has a second through hole extending therethrough, and the muffler is mounted on the side wall and is located inside, on the inner side or on the outer side of the side wall; The first through hole is arranged opposite to the corresponding second through hole.

10. The press chamber according to claim 9, characterized in that: The muffler device has one or more muffler cavities, and the peripheral wall of the second through hole is provided with at least one sound absorbing opening, and each of the sound absorbing openings is connected to at least one of the muffler cavities; The muffler device is made of metamaterial, the muffler cavity is bent and extended, and the muffler cavity is arranged radially outside the second through hole; The plurality of sound absorbing openings are distributed at intervals along the circumference of the second through hole; The plurality of sound absorbing openings include a first sound absorbing opening located below the axis of the second through hole and a second sound absorbing opening located above the axis of the second through hole; The area of ​​the first sound absorption opening is greater than the area of ​​the second sound absorption opening; The depth of the muffler cavity connected to the first sound absorbing opening is less than the depth of the muffler cavity connected to the second sound absorbing opening; The number of the first sound absorbing openings is less than the number of the second sound absorbing openings.

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