Clothes processing equipment and box body thereof

Abstract

The invention relates to the technical field of clothes treatment, and provides clothes treatment equipment and a box thereof, at least one part of the box is constructed into a noise reduction structure, the noise reduction structure comprises a perforated plate and a back plate, at least one sound hole is formed in the perforated plate, the perforated plate and the back plate are arranged in the thickness direction to jointly define a silencing cavity, and the silencing cavity is communicated with the sound hole. Noise in the box body enters the silencing cavity through the sound hole and rubs with the hole wall face of the sound hole so as to convert part of sound energy into heat energy to be dissipated, the box body can provide the silencing and noise reduction function, medium-frequency and low-frequency noise can be prevented from being transmitted to the outside through the box body to a certain degree, and the noise reduction effect is good. And the problem that the size and the thickness of the box body are greatly increased due to the fact that noise eliminating components are additionally arranged on the box body can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of clothing processing, and in particular to a clothing processing device and a housing thereof. Background Art

[0002] Clothing processing equipment mainly produces medium and low frequency noise. Medium and low frequency noise has the characteristics of long wavelength, not easy to attenuate and long propagation distance. The medium and low frequency noise generated by clothing processing equipment can easily pass through the cabinet and propagate to the outside of the clothing processing equipment, damaging the user's physiological and mental health. Therefore, it is necessary to reduce the medium and low frequency noise generated by clothing processing equipment to optimize product evaluation. Summary of the invention

[0003] In view of this, the present application hopes to provide a clothes processing device and a housing thereof, wherein at least a portion of the housing is configured as a noise reduction structure to reduce medium and low frequency noise.

[0004] To achieve the above object, the present application provides a cabinet of a clothes processing device, at least a portion of which is configured as a noise reduction structure, and the noise reduction structure includes:

[0005] a perforated plate formed with at least one sound hole;

[0006] The back plate, the perforated plate and the back plate are arranged along the thickness direction to jointly define a muffler cavity, and the muffler cavity is communicated with the sound hole.

[0007] In some embodiments, a portion of the back plate protrudes toward a side away from the perforated plate to form a concave cavity, and the perforated plate is disposed in the concave cavity.

[0008] In some embodiments, the back plate includes a middle portion and an outer portion, the outer portion surrounds the outer periphery of the middle portion, and the middle portion protrudes relative to the outer portion toward a side away from the perforated plate to form the concave cavity.

[0009] In some embodiments, the surface of the perforated plate away from the middle portion does not protrude beyond the surface of the outer portion away from the middle portion in the thickness direction.

[0010] In some embodiments, the noise reduction structure includes convex ribs, and the convex ribs are located in the muffler cavity.

[0011] In some embodiments, the convex ribs include strip-shaped ribs, and the strip-shaped ribs extend along a straight line.

[0012] In some embodiments, there are multiple strip ribs, all of which are divided into a first unit and a second unit, the first unit and the second unit are alternately arranged along a first direction, the first unit includes multiple strip ribs arranged at intervals along a second direction, and the second unit includes at least one strip rib, wherein the first direction and the second direction are perpendicular to each other.

[0013] In some embodiments, the convex rib includes an annular rib, and the annular rib is in a closed ring shape.

[0014] In some embodiments, there are multiple annular ribs, and the multiple annular ribs are arranged one by one.

[0015] In some embodiments, the convex ribs include arc-shaped ribs, and the arc-shaped ribs are located outside the outermost annular ribs.

[0016] In some embodiments, the convex rib divides the muffler cavity into a plurality of cavities, the number of the sound holes is multiple, and each of the cavities corresponds to at least one sound hole.

[0017] In some embodiments, the noise reduction structure includes a sound-absorbing member, and the sound-absorbing member is disposed in the sound-absorbing cavity.

[0018] The present application also provides a clothes processing device, including:

[0019] Any of the above-mentioned boxes;

[0020] The clothes processing chamber is located in the box body.

[0021] The box provided by the embodiment of the present application, on the one hand, the noise in the box enters the muffler cavity through the sound hole, and the noise rubs against the hole wall of the sound hole to convert part of the sound energy into heat energy dissipation; the air column in the sound hole can also vibrate with the noise, so that the gas in the muffler cavity is periodically compressed or expanded by the air column in the sound hole, and the friction damping during vibration converts at least part of the remaining sound energy into heat energy dissipation. On the other hand, the noise reduction structure is roughly a flat structure, and the noise reduction structure serves as at least a part of the box, that is, the noise reduction structure replaces at least part of the original box, for example, the noise reduction structure replaces the original box plate, so that the box can provide silencing and noise reduction functions, to a certain extent avoid the transmission of medium and low frequency noise through the box to the outside, and can also avoid the problem of significantly increasing the volume and thickness of the box due to the additional noise elimination components on the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a first noise reduction structure in an embodiment of the present application;

[0023] Figure 2 for Figure 1An exploded schematic diagram of the first noise reduction structure shown;

[0024] Figure 3 This is a schematic diagram of the structure of the back plate and the strip ribs in one embodiment of the present application;

[0025] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0026] Figure 5 This is a schematic diagram of the structure of the back plate, annular ribs and arc ribs in one embodiment of the present application;

[0027] Figure 6 This is a structural schematic diagram of a second noise reduction structure in an embodiment of the present application;

[0028] Figure 7 for Figure 6 An exploded schematic diagram of the second noise reduction structure is shown.

[0029] Description of Reference Numerals

[0030] Perforated plate 1; sound hole 1a; back plate 2; muffler cavity 2a; cavity 2ab; concave cavity 2b; recessed area 2ba; support area 2bb; middle part 21; outer part 22; convex rib 3; strip rib 31; first unit 31a; second unit 31b; annular rib 32; arc rib 33; arc unit 33a; muffler 4. DETAILED DESCRIPTION

[0031] In the absence of conflict, the embodiments and technical features in the embodiments of the present application may be combined with each other, and the detailed descriptions in the specific implementation methods should be understood as explanations of the purpose of the present application and should not be regarded as improper limitations on the present application.

[0032] It should be noted that, in the embodiment of the present application, down refers to the direction toward the ground, up refers to the direction opposite to down, front refers to the direction toward the user, and back refers to the direction opposite to front; left refers to the side where the left hand of the user is located when the user is at the front side of the box, and right refers to the direction opposite to left; the front-to-back direction, the left-to-right direction, and the up-to-down direction are perpendicular to each other, and the orientation or position relationship of the "thickness direction", "first direction", and "second direction" is based on Figures 1 to 3 The orientation or position relationship shown. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] Usually, the volume of the cabinet of the clothing processing equipment is limited, and it is difficult to increase the volume of the cabinet at will. In addition, various parts for clothing processing are placed in the cabinet. The space inside the cabinet is limited, and it is difficult to additionally set a component for eliminating noise on the inner surface of the cabinet. Such a noise-eliminating component will greatly increase the thickness of the cabinet, which not only poses a risk of interfering with parts and making them difficult to install, but may also cause the distance between the parts and the noise-eliminating component to be too small, causing the parts to collide with the noise-eliminating component and generate secondary noise.

[0034] In view of this, an embodiment of the present application provides a cabinet of a laundry processing device, at least a portion of which is configured as a noise reduction structure. That is, the noise reduction structure is at least a portion of the cabinet, rather than an additional noise-eliminating component being mounted on the inner surface of the cabinet.

[0035] See also Figure 1 , Figure 2 , Figure 6 and Figure 7 The noise reduction structure includes a perforated plate 1 and a back plate 2. The perforated plate 1 is formed with at least one sound hole 1a. The perforated plate 1 and the back plate 2 are arranged along the thickness direction to jointly define a muffler cavity 2a. The muffler cavity 2a is connected to the sound hole 1a. Specifically, the sound hole 1a faces the inside of the box, and the sound hole 1a connects the muffler cavity 2a and the space inside the box. The sound waves in the box enter the muffler cavity 2a through the sound hole 1a.

[0036] The box provided by the embodiment of the present application, on the one hand, the noise in the box enters the muffler cavity 2a through the sound hole 1a, and the noise rubs against the hole wall of the sound hole 1a to convert part of the sound energy into heat energy dissipation; the air column in the sound hole 1a can also vibrate with the noise, so that the gas in the muffler cavity 2a is periodically compressed or expanded by the air column in the sound hole 1a, and the friction damping during vibration converts at least part of the remaining sound energy into heat energy dissipation. On the other hand, the noise reduction structure is roughly a flat structure, and the noise reduction structure serves as at least a part of the box, that is, the noise reduction structure replaces at least part of the original box, for example, the noise reduction structure replaces the original box plate, so that the box can provide a sound-absorbing and noise-reducing function, and to a certain extent avoid the transmission of medium and low-frequency noise through the box to the outside, and can also avoid the problem of significantly increasing the volume and thickness of the box due to the additional noise-eliminating components on the box.

[0037] The embodiment of the present application provides a clothes processing device, which includes a clothes processing chamber and a box body in any embodiment of the present application, and the clothes processing chamber is located in the box body. The clothes processing chamber is used to place and process clothes. The way of processing clothes includes but is not limited to washing and / or drying clothes, etc.

[0038] The specific type of the clothing processing device is not limited. For example, the clothing processing device can be a washing machine, a dryer, or a washer-dryer, etc.

[0039] In one embodiment, the clothes processing device includes a power motor and a barrel assembly both located in a housing, the barrel assembly includes a rotatable clothes drum and an outer barrel sleeved outside the clothes drum, the clothes processing chamber is formed in the clothes drum, and the power motor is used to drive the clothes drum to rotate. Exemplarily, the clothes drum can be provided with a flow port, and there is a separation space between the clothes drum and the outer barrel, and the flow port connects the clothes processing chamber and the separation space. Liquid and / or gas can flow between the clothes processing chamber and the separation space through the flow port. The rotation of the clothes drum can change the posture of the clothes in the clothes processing chamber and improve the clothes processing efficiency. The outer barrel remains stationary to facilitate the assembly of other parts.

[0040] When the clothing processing device is in working state, the noise sources of the clothing processing device include but are not limited to the noise generated by the power motor and / or the noise generated by the drum assembly, etc. When the clothing processing device washes clothes, the noise sources of the clothing processing device also include the noise generated by the water flow and / or the movement of clothes in the clothing processing chamber. When the clothing processing device dries clothes, the noise sources of the clothing processing device also include the airflow noise generated by the airflow, etc. The main frequency range of the above noise is usually between 100Hz (Hertz) and 1000Hz, that is, medium and low frequency noise, and the frequency of a small part of the noise is between 1000Hz and 1700Hz. The noise generated by the clothing processing device can be silenced and reduced by the noise reduction structure, thereby reducing or even eliminating the noise propagating outward, achieving the purpose of silencing, improving the user experience, and improving user satisfaction.

[0041] In some embodiments, the clothes holding drum is substantially cylindrical.

[0042] In some embodiments, the outer barrel is substantially cylindrical.

[0043] In one embodiment, the clothes processing device may be a pulsator-type clothes processing device, that is, the rotation axis of the clothes holding drum extends in the up-down direction.

[0044] In another embodiment, the clothes treating device may be a drum type clothes treating device, that is, the rotation axis of the clothes holding drum extends in the horizontal direction.

[0045] Exemplarily, the box may be a hexahedral structure, such as a cube or a cuboid.

[0046] Taking a drum-type laundry processing device as an example, a laundry loading port is formed on the front side of the housing, and the laundry loading port is connected to the laundry processing chamber. The laundry loading port is used to take out and put out laundry. For example, a user can put laundry into the laundry processing chamber or take out laundry from the laundry processing chamber through the laundry loading port from the front side.

[0047] In the prior art, the top cover and the bottom cover of the box are generally a whole piece of wood or steel plate, which causes noise to easily penetrate the top cover and the bottom cover in the prior art and propagate outward, causing trouble to users.

[0048] In order to reduce noise propagation, in one embodiment, the top cover and / or the bottom cover of the box are constructed as a noise reduction structure. That is to say, the noise reduction structure serves as the top cover and / or the bottom cover of the box. The top cover is the plate above the box. The bottom cover is the plate below the box. A noise reduction structure is arranged above and / or below the barrel assembly. The space above the barrel assembly and the space below the barrel assembly are relatively large, which is convenient for setting the noise reduction structure. During the operation of the clothing processing device, the barrel assembly usually generates vibrations in the horizontal direction, such as the left and right directions. The noise reduction structure is located above and / or below the barrel assembly, which can avoid the problem of the barrel assembly hitting the noise reduction structure when the clothing processing device is in the working state. The noise reduction structure reduces or even eliminates the propagation of noise from the top or bottom to the outside, thereby further improving the noise reduction effect of the box.

[0049] Exemplarily, in one embodiment, the box includes four plates, two of which are spaced apart in the front-to-back direction, and the other two of which are spaced apart in the left-to-right direction. The four plates are sequentially connected to form a hexahedral structure with openings at the top and bottom, and the two noise reduction structures respectively close the upper and lower openings of the hexahedral structure. In this way, the noise reduction structure serves as the top cover and bottom cover of the box, and the two noise reduction structures and the four plates together define a hexahedral box.

[0050] The material of the perforated plate 1 is not limited. For example, the material of the perforated plate 1 includes but is not limited to ABS. ABS (Acrylonitrile-Butadiene-Styrene) is a terpolymer of three monomers: acrylonitrile (Acrylonitrile), butadiene (Butadiene), and styrene (Styrene).

[0051] The material of the back plate 2 is not limited. For example, the material of the back plate 2 includes but is not limited to metal material. For example, the material of the back plate 2 can be steel such as stainless steel.

[0052] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 7 The noise reduction structure includes a muffler 4, which is arranged in the muffler cavity 2a. The muffler 4 is used to absorb medium and high frequency noise, such as noise with a frequency between 1000 Hz and 1700 Hz.

[0053] Exemplarily, the sound-absorbing member 4 includes but is not limited to porous materials. Porous materials include but are not limited to sound-absorbing cotton and the like.

[0054] In one embodiment, the number of the sound hole 1a is one. In this way, the number of the sound holes 1a is small, the manufacturing is simpler, and the cost is relatively lower. Figure 1 , Figure 2 , Figure 6 and Figure 7 The number of the sound holes 1a is multiple. Multiple sound holes 1a can increase the area in contact with the sound waves, thereby increasing the sound wave loss and improving the noise reduction effect.

[0055] The shape of the sound hole 1a is not limited, and illustratively, the shape of the sound hole 1a includes but is not limited to a circle, an ellipse or a polygon, etc. For example, the shape of the sound hole 1a is a circle, which has a simple structure, is easy to form, and has a low cost.

[0056] In one embodiment, the aperture of the sound hole 1a is not greater than 1 mm. In other words, the sound hole 1a is a micro hole, so that the sound hole 1a has a larger acoustic resistance and a smaller acoustic mass, which can significantly improve the sound absorption coefficient, so as to better eliminate the noise generated by the clothing processing device.

[0057] It should be noted that, in the present application, the aperture of the sound hole 1a refers to four times the ratio of the flow cross-sectional area of ​​the sound hole 1a to the perimeter. The flow cross-section refers to the cross-section of the sound hole 1a perpendicular to the sound wave. For example, if the shape of the sound hole 1a is a regular quadrilateral, the aperture of the sound hole 1a is four times the ratio of the area of ​​the regular quadrilateral to the perimeter. For example, if the shape of the sound hole 1a is a circle, the aperture of the sound hole 1a is the diameter of the circle.

[0058] In one embodiment, the porosity of the perforated plate 1 is not greater than 20%. In this way, the structural strength of the perforated plate 1 can be taken into consideration while forming appropriate sound holes 1a to match the medium and low frequency noises generated by the clothes processing equipment.

[0059] The porosity refers to the percentage of the total volume of the acoustic holes 1a to the total volume of the perforated plate 1 in the natural state.

[0060] The perforated plate 1 and the back plate 2 may be connected in a non-detachable or detachable manner. The detachable connection includes, but is not limited to, screw connection, bolt connection, clamping connection and / or pin connection, etc. Exemplarily, screws are provided through the perforated plate 1, the muffler 4 and the back plate 2 to fix the perforated plate 1, the muffler 4 and the back plate 2 together.

[0061] In one embodiment, please refer to Figures 2 to 5, a portion of the back plate 2 protrudes toward the side away from the perforated plate 1 to form a cavity 2b, and the perforated plate 1 is disposed in the cavity 2b. On the one hand, the cavity 2b can increase the volume of the muffler cavity 2a, thereby further improving the muffler and noise reduction effect; on the other hand, by arranging the perforated plate 1 in the cavity 2b, it is possible to avoid the perforated plate 1 from increasing the dimension in the thickness direction, so that the dimension of the noise reduction structure in the thickness direction is thinner, so that the noise reduction structure is generally a flat structure, and the dimension of the noise reduction structure in the thickness direction can be as close as possible to the thickness of the top cover and the bottom cover in the prior art.

[0062] In one embodiment, please refer to Figures 2 to 5 The back plate 2 includes a middle portion 21 and an outer portion 22. The outer portion 22 surrounds the outer periphery of the middle portion 21. The middle portion 21 protrudes toward the side away from the perforated plate 1 relative to the outer portion 22 to form a concave cavity 2b. In other words, the middle portion 21 is away from the perforated plate 1 relative to the outer portion 22. The middle portion 21 and the outer portion 22 are not on the same plane, which can enhance the rigidity of the back plate 2 and make the back plate 2 less prone to vibration. The outer portion 22 surrounds the outer periphery of the middle portion 21, which not only facilitates the connection of the outer portion 22 with other plates of the box body, but also makes the area size of the middle portion 21 and the perforated plate 1 larger.

[0063] In one embodiment, please refer to Figure 1 , the surface of the perforated plate 1 away from the middle part 21 does not protrude from the surface of the outer part 22 away from the middle part 21 in the thickness direction. In some embodiments, the surface of the perforated plate 1 away from the middle part 21 is flush with the surface of the outer part 22 away from the middle part 21 in the thickness direction. In other embodiments, the surface of the perforated plate 1 away from the middle part 21 is lower than the surface of the outer part 22 away from the middle part 21 in the thickness direction. In this way, the size of the noise reduction structure in the thickness direction is as small as possible.

[0064] In one embodiment, please refer to Figure 4 and Figure 5 A portion of the bottom surface of the cavity 2b protrudes toward the side away from the perforated plate 1 to form a recessed area 2ba, and another portion of the bottom surface of the cavity 2b is a support area 2bb, which surrounds the outer periphery of the recessed area 2ba, and the perforated plate 1 is supported on the support area 2bb. The support area 2bb supports the perforated plate 1 so that the recessed area 2ba is spaced from the perforated plate 1, and the interval space between the recessed area 2ba and the perforated plate 1 is the muffler chamber 2a.

[0065] In one embodiment, please refer to Figures 2 to 7 The noise reduction structure includes a convex rib 3, which is located in the muffler cavity 2a. The convex rib 3 can block the sound waves in the muffler cavity 2a to change the propagation direction of the sound waves, so that the sound waves in the muffler cavity 2a can be reflected and / or refracted, consuming the sound wave energy, reducing the sound energy density, and playing the role of sound insulation and noise reduction.

[0066] Exemplarily, the convex rib 3 may be disposed on the side of the back plate 2 facing the perforated plate 1 along the thickness direction. The convex rib 3 may increase the strength and rigidity of the back plate 2.

[0067] In one embodiment, the rib 3 and the back plate 2 may be an integrally formed structure.

[0068] The formation method of the convex rib 3 is not limited. For example, in one embodiment, please refer to Figure 2 and Figure 5 , the part of the back plate 2 forming the muffler cavity 2a protrudes toward the side where the perforated plate 1 is located to form a convex rib 3. With such a design, on the one hand, the convex rib 3 can enhance the rigidity of the back plate 2, making the back plate 2 less likely to vibrate; on the other hand, since the convex rib 3 is located in the muffler cavity 2a, the size of the convex rib 3 protruding toward the side where the perforated plate 1 is located can be larger, thereby increasing the rigidity while minimizing the increase in the thickness of the noise reduction structure.

[0069] In one embodiment, the back plate 2 may be a sheet metal structure. That is, the back plate 2 is formed by stamping to form the middle portion 21, the outer portion 22 and / or the convex rib 3 and other structures. The back plate 2 adopts a sheet metal structure, which has good rigidity and structural strength.

[0070] The sheet metal structure refers to a structure formed by cold working such as stamping, shearing or bending of a metal plate. In other words, the back plate 2 is a structure formed by cold working such as stamping, shearing or bending of a metal plate. The thickness of the back plate 2 is substantially the same at all locations.

[0071] Exemplarily, the muffler 4 is clamped between the rib 3 and the perforated plate 1. In this way, the sound waves pass through the sound hole 1a and are first muffled by the muffler 4, and then contact the rib 3.

[0072] In one embodiment, please refer to Figure 2 and Figure 3 The convex rib 3 includes a strip rib 31, and the strip rib 31 extends along a straight line. Specifically, with a plane perpendicular to the thickness direction as a projection surface, the strip rib 31 extends along a straight line. The strip rib 31 is easy to shape and can also improve the noise reduction effect of low-frequency noise.

[0073] For example, in one embodiment, please refer to Figure 2 and Figure 3 , the strip rib 31 extends along a straight line in the second direction.

[0074] In one embodiment, please refer to Figure 2 and Figure 3, there are multiple strip ribs 31, all of which are divided into a first unit 31a and a second unit 31b, the first unit 31a and the second unit 31b are alternately arranged along the first direction, the first unit 31a includes multiple strip ribs 31 arranged at intervals along the second direction, and the second unit 31b includes at least one strip rib 31, wherein the first direction and the second direction are perpendicular to each other. With such a design, on the one hand, multiple strip ribs 31 can further improve the rigidity of the back plate 2; on the other hand, sound waves enter the gap between the strip ribs 31 of the first unit 31a and the strip ribs 31 of the second unit 31b, and are blocked multiple times by the strip ribs 31 of the first unit 31a and the strip ribs 31 of the second unit 31b, so that the sound waves are repeatedly reflected and / or refracted, extending the propagation path of the sound waves, enhancing the sound wave loss, and improving the noise reduction effect.

[0075] The first units 31 a and the second units 31 b are alternately arranged along the first direction, which means that in the first direction, one second unit 31 b is arranged between two adjacent first units 31 a.

[0076] In one embodiment, please refer to Figure 3 , taking the plane perpendicular to the first direction as the projection plane, the projection of the strip rib 31 of the second unit 31b blocks the gap between the projections of the two strip ribs 31 of the adjacent first unit 31a. In this way, the strip ribs 31 of the first unit 31a and the strip ribs 31 of the second unit 31b are arranged in a staggered manner, and the sound waves are repeatedly blocked by the strip ribs 31 of the first unit 31a and the strip ribs 31 of the second unit 31b, which can match the noise frequency band of the clothing processing device so as to better eliminate the noise of the clothing processing device.

[0077] In the first specific embodiment, the aperture of the sound hole 1a of the perforated plate 1 is less than 1 mm, the number of the sound holes 1a is multiple, the convex rib 3 on the back plate 2 includes multiple strip ribs 31, each strip rib 31 extends along the second direction, all the strip ribs 31 are allocated to the first unit 31a and the second unit 31b, the first unit 31a and the second unit 31b are alternately arranged along the first direction, the first unit 31a includes multiple strip ribs 31 arranged at intervals along the second direction, the second unit 31b includes one strip rib 31, the strip rib 31 of the second unit 31b is offset from the strip rib 31 of the first unit 31a, and the projection of the strip rib 31 of the second unit 31b covers the gap between the projections of the two strip ribs 31 of the adjacent first unit 31a with the plane perpendicular to the first direction as the projection plane. Sound-absorbing cotton is arranged in the sound-absorbing cavity 2a, and the perforated plate 1, the sound-absorbing cotton and the back plate 2 are fixed together by screw connection. The material of the perforated plate 1 is ABS, and the material of the back plate 2 is steel. The noise reduction structure is tested and analyzed, please refer to Table 1, which is a test structure table of the noise reduction structure and the original noise of the first specific embodiment of the present application. It can be seen from Table 1 that the noise reduction structure has a high sound absorption coefficient for medium and low frequency noises near 108Hz, 150Hz, 638Hz, and 1270Hz. For example, the noise frequency band near the bottom of the box is concentrated between 100Hz and 1300Hz, and the noise reduction structure in this embodiment can be used as the bottom cover of the box.

[0078] Table 1

[0079]

[0080] In one embodiment, please refer to Figure 5 The convex rib 3 includes an annular rib 32, and the annular rib 32 is in a closed ring shape. Specifically, with the plane perpendicular to the thickness direction as the projection plane, the projection of the annular rib 32 on the projection plane is in a closed ring shape. On the one hand, the annular rib 32 can strengthen the rigidity of the back plate 2 in multiple directions, such as the first direction and the second direction; on the other hand, the sound wave enters the annular rib 32 and is repeatedly reflected by the annular rib 32, changing the propagation characteristics of the sound wave and hindering the sound wave energy from propagating outward.

[0081] The closed ring shape includes but is not limited to a circular ring, an elliptical ring, a racetrack shape or a polygonal shape, etc.

[0082] In one embodiment, please refer to Figure 5 , the number of the annular ribs 32 is multiple, and the multiple annular ribs 32 are set one by one. Exemplarily, the annular ribs 32 are in a circular ring shape, and the multiple annular annular ribs 32 are arranged in concentric circles. In this way, the multiple annular ribs 32 are set one by one and roughly present a water ripple structure. Sound waves can be continuously reflected and interfered in the space defined between two adjacent annular ribs 32. The multiple annular ribs 32 set one by one are used to adapt to sound waves of different frequencies, making it difficult for sound waves to propagate outward through the back plate 2.

[0083] In one embodiment, please refer to Figure 5 The convex rib 3 includes an arc rib 33, and the arc rib 33 is located outside the outermost annular rib 32. The size of the outermost annular rib 32 can be large enough to facilitate setting as many annular ribs 32 as possible on the back plate 2. In the part where the annular rib 32 cannot be set, the arc rib 33 can block the sound wave.

[0084] For some examples, see Figure 5 , multiple arc ribs 33 are arranged in sequence from close to the annular rib 32 to away from the annular rib 32 to form arc units 33a, and multiple arc units 33a are arranged at intervals along the circumference of the annular rib 32. For example, the back plate 2 can be a regular quadrilateral structure, and four arc units 33a can be arranged at four corners of the back plate 2. In this way, more convex ribs 3 can be arranged on a limited area of ​​the back plate 2 to improve the sound insulation effect.

[0085] In the second specific embodiment, the aperture of the sound hole 1a of the perforated plate 1 is less than 1mm, and the number of the sound holes 1a is multiple. The convex ribs 3 on the back plate 2 include multiple annular ribs 32 and multiple arc ribs 33, which are all in the shape of circular rings. The multiple annular ribs 32 are set one by one, and the arc ribs 33 are located on the outside of the outermost annular ribs 32. The four arc units 33a are arranged at intervals along the circumference of the annular ribs 32. The muffler cavity 2a is provided with muffler cotton, and the perforated plate 1, the muffler cotton and the back plate 2 are fixed together by screws. The material of the perforated plate 1 is ABS, and the material of the back plate 2 is steel. For the test analysis of the noise reduction structure, please refer to Table 2, which is a test structure table of the noise reduction structure and the original noise of the second specific embodiment of the present application. It can be seen from Table 2 that the noise reduction structure has a high sound absorption coefficient for medium and low frequency noises near 164Hz, 438Hz, 1080Hz, and 1400Hz. Exemplarily, the noise reduction structure in this embodiment can be used as the bottom cover of the box.

[0086] Table 2

[0087]

[0088]

[0089] In one embodiment, please refer to Figure 6 and Figure 7The convex rib 3 divides the muffler cavity 2a into multiple cavities 2ab. The number of sound holes 1a is multiple, and each cavity 2ab corresponds to at least one sound hole 1a. The gas in the cavity 2ab is periodically compressed or expanded by the air column in the sound hole 1a connected to it. The gas in the cavity 2ab generates harmonics. The friction damping during vibration converts part of the sound energy into heat energy dissipation. Multiple cavities 2ab can change the propagation path of sound waves. By adjusting the volume of the cavity 2ab, a larger bandwidth muffler, a narrowband high sound absorption coefficient muffler, or a single frequency high sound absorption coefficient muffler can be achieved, thereby improving the noise reduction effect of medium and low frequency noise.

[0090] The shape of the cavity 2ab formed by the convex rib 3 is not limited, and the cavity 2ab formed by the convex rib 3 can be a prism. For example, with the plane perpendicular to the thickness direction as the projection plane, the projection of the cavity 2ab can be a hexagon or a part of a hexagon, and the projection of all cavities 2ab is roughly a honeycomb structure.

[0091] Exemplarily, in some embodiments, at least two sound holes 1a have different apertures. The aperture of the sound hole 1a is related to the sound absorption frequency. For example, the smaller the aperture of the sound hole 1a, the better the low-frequency noise reduction effect; sound holes 1a with different apertures have different sound absorption peaks for sound waves of different frequencies. The sound reduction frequency of the noise reduction structure can be adjusted by adjusting the aperture of the sound hole 1a. There will be multiple sound absorption peaks corresponding to the different apertures of at least two sound holes 1a. In this way, multiple sound holes 1a with different apertures can be set to generate a larger bandwidth in the medium and low frequency range, thereby achieving a larger bandwidth sound elimination; the aperture of the sound hole 1a can also be adjusted to concentrate on eliminating the noise of the target frequency, thereby achieving narrow-band high sound absorption coefficient sound elimination.

[0092] In one embodiment, at least two cavities 2ab have different volumes. The volume of the cavity 2ab is related to the sound absorption frequency. For example, the larger the volume of the cavity 2ab, the better the low-frequency noise reduction effect; cavities 2ab with different volumes can absorb sound waves of different frequencies, and the noise reduction frequency of the noise reduction structure can be adjusted by adjusting the volume of the cavity 2ab. There will be multiple sound absorption peaks corresponding to the different volumes of at least two cavities 2ab. In this way, cavities 2ab with multiple volumes can be set to generate a larger bandwidth in the medium and low frequency range, thereby achieving a larger bandwidth noise reduction; it is also possible to adjust the volume of the cavity 2ab to concentrate on eliminating noise of some frequencies, thereby achieving narrow-band high sound absorption coefficient noise reduction.

[0093] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments" or "exemplary" etc. 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 embodiments of the present application. In the present application, 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 a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0094] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A box body of a clothes processing device, characterized in that: At least a portion of the box is configured as a noise reduction structure, and the noise reduction structure comprises: a perforated plate formed with at least one sound hole; The back plate, the perforated plate and the back plate are arranged along the thickness direction to jointly define a muffler cavity, and the muffler cavity is communicated with the sound hole.

2. The box according to claim 1, characterized in that: A portion of the back plate protrudes toward a side away from the perforated plate to form a concave cavity, and the perforated plate is arranged in the concave cavity.

3. The box according to claim 2, characterized in that: The back plate includes a middle portion and an outer portion, wherein the outer portion surrounds the outer periphery of the middle portion, and the middle portion protrudes relative to the outer portion toward a side away from the perforated plate to form the concave cavity.

4. The box according to claim 3, characterized in that: The surface of the perforated plate away from the middle portion does not protrude beyond the surface of the outer package portion away from the middle portion in the thickness direction.

5. The box according to claim 1, characterized in that: The noise reduction structure includes convex ribs, and the convex ribs are located in the muffler cavity.

6. The box according to claim 5, characterized in that: The convex ribs include strip-shaped ribs, and the strip-shaped ribs extend along a straight line.

7. The box according to claim 6, characterized in that: There are multiple strip ribs, all of which are allocated to a first unit and a second unit. The first unit and the second unit are alternately arranged along a first direction. The first unit includes multiple strip ribs spaced apart along a second direction, and the second unit includes at least one strip rib, wherein the first direction and the second direction are perpendicular to each other.

8. The box according to claim 5, characterized in that: The convex ribs include annular ribs, and the annular ribs are in a closed ring shape.

9. The box according to claim 8, characterized in that: There are multiple annular ribs, and the multiple annular ribs are arranged one by one.

10. The box according to claim 9, characterized in that: The convex ribs include arcuate ribs, and the arcuate ribs are located outside the outermost annular ribs.

11. The box according to claim 5, characterized in that: The convex ribs divide the muffler cavity into a plurality of cavities, the number of the sound holes is a plurality, and each of the cavities corresponds to at least one sound hole.

12. The box according to any one of claims 1 to 11, characterized in that: The noise reduction structure includes a sound-absorbing component, and the sound-absorbing component is arranged in the sound-absorbing cavity.

13. A clothes processing device, characterized in that: include: The box body according to any one of claims 1 to 12; The clothes processing chamber is located in the box body.

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