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 is provided with a sound hole and a plurality of cavities, and the sound hole is communicated with the cavities. Noise in the box body enters the cavity through the sound hole and rubs with the hole wall face of the sound hole so that part of sound energy can be converted into heat energy to be dissipated. The multiple cavities can change the sound wave propagation path, large-bandwidth noise reduction or narrow-band high-sound-absorption-coefficient noise reduction or single-frequency high-sound-absorption-coefficient noise reduction is achieved by adjusting the volume of the cavities, and therefore the noise reduction effect of medium-frequency noise and low-frequency noise is improved. The noise reduction structure serves as at least one part of the box body, so that the box body can provide a noise reduction function, medium-frequency and low-frequency noise is prevented from being transmitted to the outside through the box body to a certain extent, and the problem that the size and the thickness of the box body are greatly increased due to the fact that noise elimination components are additionally arranged on the box body can be solved.

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] The noise generated by clothing processing equipment is mainly 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 outside the clothing processing equipment, causing physiological and psychological damage to users. Therefore, it is particularly important to reduce the medium and low frequency noise generated by clothing processing equipment and improve product evaluation. Summary of the invention

[0003] In view of this, the present application hopes to provide a clothing processing device and a housing thereof that can reduce medium and low frequency noise.

[0004] To achieve the above-mentioned purpose, the present application provides a housing of a clothing processing device, at least a portion of which is configured as a noise reduction structure, wherein the noise reduction structure is formed with a sound hole and a plurality of cavities, wherein the sound hole is connected to the cavity.

[0005] In some embodiments, at least two of the cavities are connected.

[0006] In some embodiments, the plurality of cavities are arranged along a plane perpendicular to the thickness direction of the noise reduction structure, and the sound holes are formed on a side wall of the noise reduction structure facing the inside of the box along the thickness direction.

[0007] In some embodiments, a plurality of the cavities are arranged along a first direction to form a sound-absorbing unit, and a plurality of the sound-absorbing units are arranged along a second direction, wherein the first direction, the second direction, and a thickness direction of the noise reduction structure are perpendicular to each other.

[0008] In some embodiments, the noise reduction structure includes a convex rib and a shell having a sound-absorbing cavity, the convex rib is located in the sound-absorbing cavity and divides the sound-absorbing cavity into a plurality of cavities, and the shell is formed with the sound hole.

[0009] In some embodiments, at least one of the ribs is formed with a communicating hole.

[0010] In some embodiments, the shell includes a perforated plate and a back shell, the perforated plate is formed with the sound hole, the back shell is open on one side along the thickness direction, and the perforated plate closes the opening of the back shell to cooperate to form the muffler chamber.

[0011] In some embodiments, the noise reduction structure includes a sound absorbing member, and the sound absorbing member is located between the perforated plate and the rib.

[0012] In some embodiments, the perforated plate and the back shell are detachably connected.

[0013] In some embodiments, the noise reduction structure includes a snap-in plate, which is disposed on a peripheral side wall of the back shell, and the snap-in plate abuts against a side surface of the perforated plate away from the muffler cavity along a thickness direction.

[0014] The present application also provides a clothes processing device, including:

[0015] Any of the above-mentioned boxes;

[0016] The clothes processing chamber is located in the box body.

[0017] The box provided by the embodiment of the present application, on the one hand, the noise in the box enters the 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 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, and multiple cavities can change the propagation path of sound waves. By adjusting the volume of the cavity, a larger bandwidth silencing, a narrow band high sound absorption coefficient silencing or a single frequency high sound absorption coefficient silencing can be achieved, thereby improving the noise reduction effect of medium and low frequency noise; on the other hand, the noise reduction structure is at least a part of the box, that is, the noise reduction structure replaces at least a 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 medium and low frequency noise from passing 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

[0018] Figure 1 This is a structural schematic diagram of a first noise reduction structure in an embodiment of the present application;

[0019] Figure 2 for Figure 1 An exploded schematic diagram of the first noise reduction structure shown;

[0020] Figure 3 for Figure 2 A schematic diagram of the structure of the middle part from another perspective;

[0021] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0022] Figure 5 This is a structural schematic diagram of a second noise reduction structure in an embodiment of the present application;

[0023] Figure 6 for Figure 5 An exploded schematic diagram of the second noise reduction structure shown;

[0024] Figure 7 for Figure 6 A schematic diagram of the structure of the middle part from another perspective;

[0025] Figure 8 It is a partial cross-sectional schematic diagram of a third noise reduction structure in an embodiment of the present application.

[0026] Description of Reference Numerals

[0027] Sound hole 100a; perforated unit 100ab; cavity 100b; sound-absorbing unit 100ba; convex rib 1; connecting hole 1a; shell 2; perforated plate 21; protrusion 211; recessed area 211a; abutment portion 212; reinforcing rib 213; back shell 22; back plate 221; enclosure 222; sound absorbing member 3; snap-in piece 4. DETAILED DESCRIPTION

[0028] 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.

[0029] It should be noted that in the embodiments 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 the front; left refers to the side where the left hand of the user is located when the user is located at the front side of the box, and right is the direction opposite to the left; the front-to-back direction, the left-to-right direction, and the up-to-down direction are mutually perpendicular, and the orientation or position relationship of "thickness direction", "first direction", and "second direction" is based on the orientation or position relationship shown in the accompanying drawings. 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 on the present application. The present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] 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.

[0031] 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.

[0032] See also Figure 1 and Figure 2 The noise reduction structure is formed with a sound hole 100a and a plurality of cavities 100b, and the sound hole 100a is connected with the cavity 100b. Specifically, the sound hole 100a faces the box, and the sound hole 100a connects the cavity 100b and the space in the box. The sound waves in the box enter the cavity 100b through the sound hole 100a.

[0033] The box provided by the embodiment of the present application has, on the one hand, noise in the box enters the cavity 100b through the sound hole 100a, and the noise rubs against the hole wall of the sound hole 100a to convert part of the sound energy into heat energy dissipation; the air column in the sound hole 100a can also vibrate with the noise, so that the gas in the cavity 100b is periodically compressed or expanded by the air column in the sound hole 100a, and the friction damping during vibration converts at least part of the remaining sound energy into heat energy dissipation. Multiple cavities 100b can change the propagation path of sound waves, and by adjusting the volume of the cavity 100b, it is achieved Larger bandwidth silencer, narrowband high sound absorption coefficient silencer or single frequency high sound absorption coefficient silencer, thereby improving the noise reduction effect of medium and low frequency noise; on the other hand, the noise reduction structure serves as at least a part of the box, that is, the noise reduction structure replaces at least a part of the original box, for example, the noise reduction structure replaces the original box plate, so that the box can provide silencer and noise reduction functions, to a certain extent avoid the medium and low frequency noise from transmitting 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] In some embodiments, the clothes holding drum is substantially cylindrical.

[0039] In some embodiments, the outer barrel is substantially cylindrical.

[0040] 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.

[0041] 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.

[0042] Exemplarily, the box may be a hexahedral structure, such as a cube or a cuboid.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] In one embodiment, please refer to Figure 3 and Figure 4 , at least two cavities 100b are connected. In this way, the sound wave can enter from one cavity 100b into at least one cavity 100b connected thereto, so that the sound wave propagates between the multiple connected cavities 100b, extending the sound wave propagation path, and the acoustic impedance suddenly changes during the propagation of the sound wave between the multiple cavities 100b, so that the noise reduction frequency band moves toward the low-frequency band as a whole, thereby improving the low-frequency noise elimination effect.

[0048] In one embodiment, all cavities 100b are connected. Exemplarily, in one embodiment, all cavities 100b are connected in pairs. That is, one cavity 100b is connected in one-to-one correspondence with another cavity 100b.

[0049] In one embodiment, please refer to Figure 4 , one cavity 100b is connected to a plurality of cavities 100b. In this way, the sound waves in the cavity 100b can enter the plurality of cavities 100b connected thereto.

[0050] In one embodiment, at least two cavities 100b are isolated from each other. That is, at least two cavities 100b are not connected to each other. Figure 7, all the cavities 100b are isolated from each other. That is, all the cavities 100b are not connected to each other.

[0051] In one embodiment, a portion of all the cavities 100b are connected, and another portion of all the cavities 100b are isolated from each other.

[0052] In one embodiment, please refer to Figure 2 , Figure 3 , Figure 6 and Figure 7 , multiple cavities 100b are arranged along a plane perpendicular to the thickness direction of the noise reduction structure, and the sound hole 100a is formed on the side wall of the noise reduction structure facing the box body along the thickness direction. Exemplarily, all cavities 100b are arranged along a plane perpendicular to the thickness direction of the noise reduction structure. The noise reduction structure is generally flat, and the thickness of the noise reduction structure is much smaller than the size of the noise reduction structure along other directions such as the first direction and the second direction. In this way, the noise reduction structure can better replace the plate body of the box body, and reserve more internal space in the box body for other components such as the cylinder assembly, etc.

[0053] In one embodiment, please refer to Figure 3 and Figure 7 , multiple cavities 100b are arranged along the first direction to form a muffler unit 100ba, and multiple muffler units 100ba are arranged along the second direction, wherein the first direction, the second direction and the thickness direction of the noise reduction structure are perpendicular to each other. In this way, more cavities 100b can be arranged within the limited area of ​​the noise reduction structure, and the combination of multiple cavities 100b can achieve muffler in a wide bandwidth range or concentrated muffler in a narrow bandwidth range, with good sound absorption performance.

[0054] The shape of the cavity 100b is not limited. For example, the projection plane is perpendicular to the thickness direction, and the projection shape of the cavity 100b includes but is not limited to a circle, an ellipse or a polygon. Figure 3 and Figure 7 The projection of the cavity 100b may be a hexagon or a part of a hexagon, and the projections of all the cavities 100b may be roughly in a honeycomb structure.

[0055] In one embodiment, please refer to Figures 2 to 8 The noise reduction structure includes a convex rib 1 and a shell 2 having a muffler cavity. The convex rib 1 is located in the muffler cavity and divides the muffler cavity into a plurality of cavities 100b. The shell 2 is formed with a sound hole 100a. Two adjacent cavities 100b can share a convex rib 1 as a partition wall, that is, two adjacent cavities 100b are separated by a convex rib 1. The convex rib 1 occupies a small space in the muffler cavity, and the weight of the noise reduction structure can be relatively light.

[0056] For example, in one embodiment, please refer to Figure 5, with the plane perpendicular to the thickness direction as the projection plane, the projection outline of the shell 2 is roughly quadrilateral. In this way, the shell 2 can be adapted to a regular hexahedral box, for example, the top cover and / or the bottom cover of the box adopts the shell 2.

[0057] In one embodiment, please refer to Figure 3 and Figure 4 , at least one rib 1 is formed with a connecting hole 1a. The connecting hole 1a can connect two cavities 100b. In this way, at least two cavities 100b are connected through the connecting hole 1a. Sound waves can enter from one cavity 100b to another cavity 100b through the connecting hole 1a. The aperture of the connecting hole 1a is smaller than the volume of the cavity 100b. In this way, during the propagation of the sound wave from one cavity 100b to another cavity 100b through the connecting hole 1a, the propagation cross section of the sound wave suddenly changes, which enhances the reflection and interference of the sound wave and can improve the sound absorption and noise reduction effect.

[0058] In one embodiment, please refer to Figure 3 and Figure 4 , multiple cavities 100b are spliced ​​along the first direction to form a muffler unit 100ba, multiple muffler units 100ba are spliced ​​along the second direction, the convex rib 1 shared by two adjacent cavities 100b of the muffler unit 100ba forms a connecting hole 1a, and a convex rib 1 shared by two adjacent muffler units 100ba forms a connecting hole 1a, so that at least part of the cavity 100b forms a serpentine curved extension channel. Sound waves can propagate in the serpentine curved extension channel through the connecting hole 1a, so that the sound waves are continuously reflected and refracted by the convex rib 1 in the multiple cavities 100b, thereby improving the muffler effect.

[0059] In one embodiment, please refer to Figure 2 and Figure 5 The housing 2 includes a perforated plate 21 and a back housing 22. The perforated plate 21 is formed with a sound hole 100a. The back housing 22 is open on one side along the thickness direction. The perforated plate 21 closes the opening of the back housing 22 to form a muffler cavity together. For example, the perforated plate 21 and the back housing 22 can be manufactured separately. The housing 2 has a simple structure, fewer structural parts, lower cost, and is easy to manufacture.

[0060] In one embodiment, please refer to Figure 2 and Figure 7 , the convex rib 1 is arranged on the back shell 22. For example, the convex rib 1 and the back shell 22 can be an integrally formed structure. In this way, the assembly steps between the convex rib 1 and the back shell 22 can be reduced, and the production efficiency can be improved.

[0061] In one embodiment, please refer to Figure 2 and Figure 6The noise reduction structure includes a sound absorbing member 3, which is located between the perforated plate 21 and the rib 1. The sound wave passes through the sound hole 100a and first passes through the sound absorbing member 3 to eliminate the sound, and then enters the cavity 100b. The sound absorbing member 3 is used to absorb medium and high frequency noise, such as noise with a frequency between 1000Hz and 1700Hz.

[0062] Exemplarily, the sound absorbing member 3 includes but is not limited to porous materials. Porous materials include but are not limited to sound absorbing cotton and the like.

[0063] Exemplarily, in one embodiment, the perforated plate 21 and the back shell 22 are detachably connected. In this way, the perforated plate 21 and the back shell 22 are easily assembled and unassembled, thereby improving production efficiency.

[0064] In one embodiment, please refer to Figures 5 to 8 The noise reduction structure includes a snap-in piece 4, which is arranged on the peripheral side wall of the back shell 22, and the snap-in piece 4 abuts against the side of the perforated plate 21 away from the muffler cavity in the thickness direction. That is to say, the snap-in piece 4 presses the perforated plate 21 to the back shell 22 to achieve the snap connection between the perforated plate 21 and the back shell 22. Exemplarily, in the process of assembling the perforated plate 21 to the back shell 22, the perforated plate 21 is pressed so that the perforated plate 21 and the back shell 22 are close to each other in the thickness direction, and the perforated plate 21 contacts the snap-in piece 4 so that the snap-in piece 4 is elastically deformed until the snap-in piece 4 moves from the side of the perforated plate 21 close to the muffler cavity to the side of the perforated plate 21 away from the muffler cavity, and the perforated plate 21 is limited to the back shell 22 by the snap-in piece 4. In this way, the positioning assembly between the perforated plate 21 and the back shell 22 can be completed conveniently and quickly.

[0065] In one embodiment, the noise reduction structure includes a fastener, and the fastener is provided on the perforated plate 21 and the back shell 22. The fastener can improve the connection stability between the perforated plate 21 and the back shell 22. In the case where the noise reduction structure includes a sound absorbing member 3, the fastener can also be provided on the sound absorbing member 3 to fix the sound absorbing member 3.

[0066] Fasteners include but are not limited to screws or bolts and the like.

[0067] Exemplarily, the material of the perforated plate 21 includes but is not limited to ABS or metal materials, etc. ABS (Acrylonitrile-Butadiene-Styrene) is a terpolymer of three monomers: acrylonitrile (Acrylonitrile), butadiene (Butadiene), and styrene (Styrene). For example, the material of the perforated plate 21 can be stainless steel or galvanized steel, etc.

[0068] Exemplarily, the material of the rib 1 and the back shell 22 includes but is not limited to ABS and the like.

[0069] In one embodiment, please refer to Figure 1 , Figure 5 and Figure 8 The number of the sound holes 100a is multiple, and multiple sound holes 100a can increase the area in contact with the sound waves, thereby increasing the sound wave loss and improving the noise reduction effect.

[0070] Exemplarily, each cavity 100b is connected to at least one sound hole 100a.

[0071] The shape of the sound hole 100a is not limited, and illustratively, the shape of the sound hole 100a includes but is not limited to a circle, an ellipse or a polygon, etc. For example, the shape of the sound hole 100a is a circle, which has a simple structure and shape, a simple manufacturing process, is easy to form, and has a low cost.

[0072] In one embodiment, the aperture of the sound hole 100a is not greater than 1 mm. In other words, the sound hole 100a is a micro hole, so that the sound hole 100a has a larger acoustic resistance and a smaller acoustic mass, which can significantly improve the sound absorption coefficient. The smaller the aperture of the sound hole 100a, the better the low-frequency noise reduction effect, so as to effectively eliminate the noise generated by the clothing processing device.

[0073] The aperture refers to four times the ratio of the flow cross-sectional area to the perimeter. The flow cross-sectional area refers to the cross-sectional area perpendicular to the sound wave. For example, if the shape of the sound hole 100a or the connecting hole 1a is a regular quadrilateral, the aperture of the sound hole 100a or the connecting 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 100a or the connecting hole 1a is a circle, the aperture of the sound hole 100a or the connecting hole 1a is the diameter of the circle.

[0074] In one embodiment, the porosity of the perforated plate 21 is not greater than 20%. In this way, the structural strength of the perforated plate 21 can be taken into consideration while forming appropriate sound holes 100a to match the medium and low frequency noises generated by the clothes processing equipment.

[0075] The porosity refers to the percentage of the total volume of the acoustic holes 100a to the total volume of the perforated plate 21 in a natural state.

[0076] Exemplarily, in some embodiments, at least two sound holes 100a have different apertures. The aperture of the sound hole 100a is related to the sound absorption frequency. For example, the smaller the aperture of the sound hole 100a, the better the low-frequency noise reduction effect; sound holes 100a with different apertures have different sound absorption peaks for sound waves of different frequencies. By adjusting the aperture of the sound hole 100a, the sound reduction frequency of the noise reduction structure can be adjusted. There will be multiple sound absorption peaks corresponding to the different apertures of at least two sound holes 100a. In this way, multiple sound holes 100a 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; it is also possible to adjust the aperture of the sound hole 100a to concentrate on eliminating the noise of the target frequency, thereby achieving narrow-band high sound absorption coefficient sound elimination.

[0077] In one embodiment, at least two cavities 100b have different volumes. The volume of the cavity 100b is related to the sound absorption frequency. For example, the larger the volume of the cavity 100b, the better the low-frequency noise reduction effect; cavities 100b 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 100b. There will be multiple sound absorption peaks corresponding to the different volumes of at least two cavities 100b. In this way, cavities 100b 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 100b to concentrate on eliminating noise of some frequencies, thereby achieving narrow-band high sound absorption coefficient noise reduction.

[0078] In the first specific embodiment, a plurality of cavities 100b are spliced ​​along a first direction to form a muffler unit 100ba, a plurality of muffler units 100ba are spliced ​​along a second direction, a convex rib 1 shared by two adjacent cavities 100b of the muffler unit 100ba forms a connecting hole 1a, and a convex rib 1 shared by two adjacent muffler units 100ba forms a connecting hole 1a, so that at least part of the cavity 100b forms a serpentine curved and extended channel. Part of the cavity 100b is in the shape of a hexagonal prism, and the shape of the remaining cavity 100b is a part of the hexagonal prism and surrounds the outer periphery of the hexagonal cavity 100b, and all cavities 100b are roughly in a honeycomb structure. The aperture of the sound hole 100a of the perforated plate 21 is not greater than 1mm, and the number of the sound holes 100a is multiple. Sound-absorbing cotton is arranged in the muffler cavity, and the perforated plate 21, the sound-absorbing cotton and the back shell 22 are fixed together by screws. The perforated plate 21, the rib 1 and the back shell 22 are all made of ABS, and the rib 1 and the back shell 22 are an integrally formed structure. The noise reduction structure is tested and analyzed, and please refer to Table 1. The noise reduction structure has a high sound absorption coefficient for medium and low frequency noises near 154Hz, 462Hz, 912Hz, 1140Hz, and 1710Hz. For example, the noise frequency band near the top of the box is concentrated between 100Hz and 1700Hz, and the noise reduction structure in this embodiment can be used as the top cover of the box.

[0079] Table 1

[0080]

[0081] In one embodiment, please refer to Figure 1 and Figure 2, part of the perforated plate 21 protrudes toward the side away from the back shell 22 to form a protruding portion 211, and the other part of the perforated plate 21 is an abutting portion 212, which surrounds the outer periphery of the protruding portion 211, and the abutting portion 212 is used to abut the back shell 22, and the sound hole 100a is formed in the protruding portion 211. Compared with the abutting portion 212, the protruding portion 211 protrudes toward the side away from the back shell 22, that is, the protruding portion 211 and the abutting portion 212 are not in the same plane, which can not only enhance the rigidity of the perforated plate 21, but also make the protruding portion 211 present an internally empty convex hull structure, so that the protruding portion 211 and the back shell 22 jointly define a muffler cavity, and the convex rib 1 is arranged at the position of the back shell 22 corresponding to the protruding portion 211, and a sound absorbing member 3 can be arranged between the convex rib 1 and the protruding portion 211.

[0082] In one embodiment, please refer to Figure 1 and Figure 2 , a part of the protrusion 211 protrudes toward the back shell 22 to form a recessed area 211a. Exemplarily, there are multiple recessed areas 211a, and the multiple recessed areas 211a are arranged at intervals along the first direction or the second direction. The recessed areas 211a can further strengthen the rigidity of the perforated plate 21, so that the perforated plate 21 is not easy to vibrate. Moreover, due to the existence of the protrusion 211, the recessed depth of the recessed area 211a can be larger without affecting the setting of the sound absorbing member 3.

[0083] In one embodiment, please refer to Figure 5 and Figure 6 The perforated plate 21 is formed with a reinforcing rib 213 on the side away from the back shell 22 along the thickness direction. Exemplarily, in one embodiment, there are multiple reinforcing ribs 213, and the multiple reinforcing ribs 213 are staggered along the first direction and the second direction. The reinforcing ribs 213 are used to enhance the rigidity and strength of the perforated plate 21.

[0084] In one embodiment, please refer to Figure 2 and Figure 7 The back shell 22 includes a back plate 221 and a surrounding plate 222. The surrounding plate 222 surrounds one side of the back plate 221 in the thickness direction to define a placement groove, and the convex rib 1 is arranged in the placement groove. The back plate 221 can be a flat plate, and the surrounding plate 222 is a closed ring. Exemplarily, in one embodiment, the surrounding plate 222 surrounds the outer periphery of the abutting portion 212, and the abutting portion 212 can abut against part of the convex rib 1.

[0085] In one embodiment, please refer to Figure 1 and Figure 5 A plurality of sound holes 100a are arranged at intervals along a first direction to form a perforated unit 100ab, and the apertures of the sound holes 100a of the perforated unit 100ab are the same, that is, the apertures of any two sound holes 100a of the same perforated unit 100ab are the same. Such a design not only facilitates opening holes in the noise reduction structure, but also improves the sound absorption coefficient of the target frequency.

[0086] In one embodiment, a plurality of perforated units 100ab are arranged at intervals along the second direction, and the apertures of the sound holes 100a of two adjacent perforated units 100ab are different. That is, in the second direction, the apertures of the sound holes 100a of two non-adjacent perforated units 100ab may be the same or different. The apertures of the sound holes 100a of two adjacent perforated units 100ab are different, so as to expand the frequency band of the noise reduction structure and realize multi-frequency high sound absorption coefficient sound elimination.

[0087] In one embodiment, at least two cavities 100b of the muffler unit 100ba have the same volume. Exemplarily, all cavities 100b of the same muffler unit 100ba have the same volume. Such a design not only facilitates the manufacture of the cavity 100b on the noise reduction structure, but also improves the sound absorption coefficient of the target frequency.

[0088] In one embodiment, a plurality of muffler units 100ba are arranged along the second direction, so that more cavities 100b can be arranged within a limited area.

[0089] Exemplarily, the volumes of the cavities 100b of two adjacent muffler units 100ba are different. That is, in the second direction, the volumes of the cavities 100b of two non-adjacent muffler units 100ba may be the same or different. The volumes of the cavities 100b of two adjacent muffler units 100ba are different, so as to expand the frequency band of the noise reduction structure and achieve multi-frequency high sound absorption coefficient muffler.

[0090] 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.

[0091] 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 body is configured as a noise reduction structure, wherein the noise reduction structure is formed with a sound hole and a plurality of cavities, wherein the sound hole is in communication with the cavities.

2. The box according to claim 1, characterized in that: At least two of the cavities are connected.

3. The box according to claim 1, characterized in that: The plurality of cavities are arranged along a plane perpendicular to the thickness direction of the noise reduction structure, and the sound holes are formed on the side wall of the noise reduction structure facing the inside of the box along the thickness direction.

4. The box according to claim 3, characterized in that: A plurality of the cavities are arranged along a first direction to form a sound-absorbing unit, and a plurality of the sound-absorbing units are arranged along a second direction, wherein the first direction, the second direction and the thickness direction of the noise reduction structure are perpendicular to each other.

5. The box according to claim 1, characterized in that: The noise reduction structure comprises a convex rib and a shell having a muffler cavity, wherein the convex rib is located in the muffler cavity and divides the muffler cavity into a plurality of cavities, and the shell is formed with the sound hole.

6. The box according to claim 5, characterized in that: At least one of the ribs is formed with a communicating hole.

7. The box according to claim 5, characterized in that: The shell comprises a perforated plate and a back shell, wherein the perforated plate is formed with the sound hole, and the back shell is open on one side along the thickness direction, and the perforated plate closes the opening of the back shell to cooperate with each other to form the muffler cavity.

8. The box according to claim 7, characterized in that: The noise reduction structure includes a sound absorbing member, and the sound absorbing member is located between the perforated plate and the rib.

9. The box according to claim 7, characterized in that: The perforated plate and the back shell are detachably connected.

10. The box according to claim 9, characterized in that: The noise reduction structure comprises a snap-in piece, which is arranged on the peripheral side wall of the back shell, and the snap-in piece abuts against the side surface of the perforated plate away from the muffler cavity along the thickness direction.

11. A clothes processing device, characterized in that: include: The box according to any one of claims 1 to 10; The clothes processing chamber is located in the box body.

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