Vibration reduction assembly and clothes treatment equipment

Abstract

The invention belongs to the technical field of clothes treatment, and discloses a vibration reduction assembly and clothes treatment equipment. The vibration reduction assembly is used for equipment generating vibration during operation and comprises a bottom foot of a cavity structure, and a phonon crystal structure is embedded in the cavity structure; the phonon crystal structure comprises multiple layers of different vibration reduction units, and the multiple layers of different vibration reduction units are configured to correspond to different vibration frequency bands of equipment. A phononic crystal structure is designed to comprise multiple layers of vibration reduction units, each vibration reduction unit corresponds to a specific vibration frequency band, the broadband vibration reduction effect is achieved, effective local resonance can be achieved in the multiple vibration frequency bands, vibration under different working conditions can be adapted, frequency band gaps can be accurately regulated and controlled according to common frequencies of different machine types, and the vibration reduction effect is achieved. And the damping effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of clothing processing, and in particular to a vibration reduction component and clothing processing equipment. Background Art

[0002] In equipment that generates vibration during operation, especially clothing processing equipment, vibration noise is generated during the operation of the drum. The cabinet part of the clothing processing equipment is an important part to block the propagation of vibration and noise, especially the base connected to the cabinet, which plays a vital role in reducing the vibration of the cabinet. The common base consists of a screw and a fixed plate connected to the bottom of the screw. Generally, a rubber shell is put on the fixed plate to reduce the vibration of the base and prevent the cabinet from sliding. However, the vibration reduction effect of the rubber shell is general, and large vibration and noise cannot be avoided during the working process of the clothing processing equipment. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the vibration reduction effect of the bottom feet of the box of the existing equipment that generates vibration during operation is average, so a vibration reduction component and clothing processing equipment with better vibration reduction effect are provided.

[0004] The present invention is intended to provide a vibration reduction assembly for a device that generates vibration during operation, comprising: A base foot, wherein the base foot is a cavity structure, and a phononic crystal structure is embedded in the cavity structure; The phononic crystal structure includes multiple layers of different vibration reduction units, and the multiple layers of different vibration reduction units are configured to correspond to different vibration frequency bands of the device; The multiple layers of different vibration damping units include a high-frequency vibration damping disk and a low-frequency vibration damping disk. The high-frequency vibration damping disk is embedded with a first phononic crystal microstructure that absorbs high-frequency vibrations, and the low-frequency vibration damping disk is embedded with a second phononic crystal microstructure that absorbs low-frequency vibrations.

[0005] In some embodiments, the multiple layers of different vibration damping units are constructed to have different vibration damping material properties and / or pore structure sizes of phonon band gaps and / or pore arrangements of phonon band gaps and / or period lengths of pore arrangements of phonon band gaps, and each vibration damping unit corresponds to a specific vibration frequency band.

[0006] In some embodiments, a vibration absorbing layer is provided between the high-frequency vibration damping disk and the low-frequency vibration damping disk.

[0007] In some embodiments, a plurality of first holes are provided at intervals on the high-frequency vibration damping disk, and the first phononic crystal microstructure is embedded in the first holes; A plurality of second holes are provided at intervals on the low-frequency vibration damping disk, and the second phononic crystal microstructure is embedded in the second holes; Wherein, the resonance frequency of the first phononic crystal microstructure is higher than the resonance frequency of the second phononic crystal microstructure.

[0008] In some embodiments, the high-frequency vibration damping disc and the low-frequency vibration damping disc are made of high-density rigid material; The first phononic crystal microstructure and the second phononic crystal microstructure are made of low-density high-damping material.

[0009] In some embodiments, the high-frequency vibration damping disk and the low-frequency vibration damping disk are arranged in the cavity structure from top to bottom along the vertical direction, and the volume of the first phononic crystal microstructure is smaller than the volume of the second phononic crystal microstructure.

[0010] In some embodiments, the first phononic crystal microstructure is configured as a column or a sphere; and the second phononic crystal microstructure is configured as a column or a sphere.

[0011] In some embodiments, the vibration reduction assembly further comprises: A connecting piece, one end of which is connected to the high-frequency vibration damping disk, and the other end of which is used to be connected to the chassis of the device.

[0012] In some embodiments, the connecting member is constructed as a screw rod, a pad is screwed onto the connecting member, and the pad is used to abut against a chassis of the device.

[0013] In some embodiments, the pad body includes a supporting portion and a threaded portion arranged from top to bottom in the vertical direction, the supporting portion is connected to the upper end of the threaded portion, and the threaded portion is threadedly connected to the outer side of the connecting piece.

[0014] In some embodiments, the base foot is constructed as a sleeve, and the base foot is wrapped around the high-frequency vibration damping disk, the low-frequency vibration damping disk, and the outside of the vibration absorbing insulation layer.

[0015] In some embodiments, a laundry processing device is provided, comprising: Chassis; The above-mentioned vibration reduction assembly is arranged at the bottom of the chassis.

[0016] In some embodiments, a laundry processing device is provided, comprising: Chassis; The above-mentioned vibration reduction assembly, the connecting member is screwed to the bottom of the chassis and the bottom wall of the chassis abuts against the pad; The connecting member is a rigid member.

[0017] The technical solution provided by the present invention has the following beneficial effects compared with the prior art: The designed phononic crystal structure includes multiple layers of vibration reduction units, each of which corresponds to a specific vibration frequency band, to achieve a wide-band vibration reduction effect, so that it can achieve effective local resonance in multiple vibration frequency bands and adapt to vibrations under different working conditions. The frequency band gap can be accurately adjusted according to the common frequencies of different models to improve the vibration reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings: Figure 1 is a cross-sectional view of a vibration reduction assembly shown in an embodiment of the present invention; Figure 2 is a front view of a vibration reduction assembly shown in an embodiment of the present invention; Figure 3 is a partial exploded view of a vibration reduction assembly shown in an embodiment of the present invention; Figure 4 is a top view of a high-frequency vibration damping disk shown in an embodiment of the present invention; Figure 5 is a top view of a low-frequency vibration damping disk shown in an embodiment of the present invention; Figure 6 is a schematic diagram of a first phononic crystal microstructure shown in an embodiment of the present invention; Figure 7 is a schematic diagram of a second phononic crystal microstructure shown in an embodiment of the present invention; Figure 8 is an energy band diagram of a vibration reduction assembly according to an embodiment of the present invention.

[0019] In the figure: 1-high frequency vibration damping plate, 2-low frequency vibration damping plate, 3-first hole, 4-second hole, 5-first phononic crystal microstructure, 6-second phononic crystal microstructure, 7-vibration absorbing insulation layer, 8-connecting piece, 9-pad, 901-abutting part, 902-screwed part, 10-base.

[0020] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be noted that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "contacted", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In equipment that generates vibration during operation, especially clothing processing equipment, the common foot at the lower end of the box is composed of a screw and a fixed plate connected to the bottom of the screw. Generally, a rubber shell is put on the fixed plate to achieve the function of foot vibration reduction and prevent the box from sliding. However, the vibration reduction effect of the rubber shell is general, and large vibration and noise cannot be avoided during the operation of the clothing processing equipment.

[0024] Based on this technical problem, the following embodiments are proposed.

[0025] Embodiment 1 like Figure 1 , 3 As shown in FIG. 7 , this embodiment provides a vibration reduction assembly for a device that generates vibration during operation, comprising: A base 10, wherein the base 10 is a cavity structure, and a phononic crystal structure is embedded in the cavity structure; The phononic crystal structure includes multiple layers of different vibration reduction units, and the multiple layers of different vibration reduction units are configured to correspond to different vibration frequency bands of the device.

[0026] In this embodiment, the device is a washing machine as an example for explanation. The phononic crystal structure is a composite material composed of two or more different materials arranged periodically. The periodic arrangement of these materials can form a specific vibration frequency band (band gap), so that sound waves or vibrations within certain frequency ranges are suppressed. The phononic crystal structure includes multiple layers of different vibration reduction units. It can be seen from the dynamic balance law of the washing machine suspension system that the lateral swing and up and down jumping of the vibration mode of the chassis caused by the drum are more likely to affect the user experience, and these two types of vibrations are usually most likely to cause vibration noise problems in the low-frequency speed-up stage (100-300rpm) and the high-frequency stable stage (about 800rpm). According to the vibration noise of the washing machine in the two frequency bands, two layers of vibration reduction units can be designed, and the resonant frequency of one of the vibration reduction units is designed to be a low-frequency vibration frequency band, and the resonant frequency of the other vibration reduction unit is designed to be a high-frequency vibration frequency band, so that the double-layer vibration reduction unit in the vibration reduction assembly as a whole can suppress different vibration frequency bands of the washing machine, and more specifically and comprehensively reduce the noise generated during the high-frequency or low-frequency operation of the washing machine.

[0027] According to the need for vibration reduction, more layers of vibration reduction units can be designed in the base 10 to suppress sound waves or vibrations in more frequency ranges.

[0028] More specifically, when the washing machine generates vibration during operation, the local resonance characteristics of the phononic crystal structure are activated. Preferably, the vibration reduction unit is made of a rigid material, such as a metal or ceramic material, and the microstructure in the vibration reduction unit is made of a low-density, high-damping material, such as air or lightweight plastic. When the local resonance characteristics of the phononic crystal structure are activated, relative displacement occurs between the air or lightweight plastic as the microstructure and the rigid material skeleton, thereby absorbing vibration energy. In addition, the phononic crystal structure itself can be optimized to design the phononic crystal structure into a multi-band vibration reduction structure, that is, a phononic crystal structure contains multiple vibration reduction units of different sizes and arrangements, each vibration reduction unit corresponds to a specific vibration frequency band, and a wide-band vibration reduction effect is achieved, so that it can achieve effective local resonance in multiple vibration frequency bands, adapt to vibrations under different working conditions, and can accurately adjust the frequency band gap according to the common frequencies of different models to improve the vibration reduction effect.

[0029] For the selection of phononic crystal structure materials, a combination of rigid materials and low-density materials is used, and the resonant frequency of the microstructure is adjusted by precisely controlling the material properties.

[0030] In addition to the above advantages, the vibration reduction assembly proposed in this embodiment also has the advantages of being environmentally friendly and energy-saving. It uses physical principles to reduce vibration, does not require additional energy, is environmentally friendly and energy-saving, and embeds the phononic crystal structure into the base 10. The structure is compact, does not increase additional space, and is easy to install and maintain. The vibration reduction assembly is not only suitable for washing machines, but can also be used in other household appliances, mechanical equipment and other fields that generate vibration during operation, and has broad application prospects.

[0031] The bottom wall of the base 10 contacts the ground and has an anti-slip function. At the same time, it has a certain protective effect on the multi-layer vibration reduction unit inside to prevent it from being affected by the external environment.

[0032] Preferably, the multiple layers of different vibration damping units are constructed to have different vibration damping material properties and / or pore structure sizes of phonon band gaps and / or pore arrangements of phonon band gaps and / or period lengths of pore arrangements of phonon band gaps, and each vibration damping unit corresponds to a specific vibration frequency band.

[0033] The phononic crystal structure design adopts a multi-band design. By designing multiple microstructures of different sizes and arrangements, each vibration reduction unit corresponds to a specific vibration frequency band, thereby effectively absorbing vibration energy in multiple frequency bands and achieving multi-band vibration reduction. The local resonance characteristics of the microstructure are utilized to ensure that the vibration energy is effectively absorbed and converted within a specific frequency range, thereby reducing the vibration and noise of the washing machine.

[0034] By adjusting the periodic length of the periodic arrangement of the microstructure of multiple layers of different vibration reduction units, the band gap position and width of the phononic crystal structure are precisely controlled to achieve resonance within the vibration frequency range generated when the washing machine is working. Arrangement: Use one-dimensional, two-dimensional or three-dimensional arrangement to optimize the wave propagation path and scattering characteristics and improve the vibration reduction effect.

[0035] By combining rigid materials with low-density materials, selecting appropriate rigid materials, such as metals and ceramics, and low-density materials, such as air and lightweight plastics, and precisely controlling the material properties, the resonant frequency of the microstructure can be adjusted.

[0036] By designing multiple layers of different vibration reduction units, each layer having different periodic arrangements and material properties, more complex vibration frequency band control can be achieved and the vibration reduction effect can be improved.

[0037] In this embodiment, Figure 1 , 3 , 6, and 7, The multi-layer different vibration damping units include a high-frequency vibration damping disk 1 and a low-frequency vibration damping disk 2, wherein the high-frequency vibration damping disk 1 is embedded with a first phononic crystal microstructure 5 for absorbing high-frequency vibrations, and the low-frequency vibration damping disk 2 is embedded with a second phononic crystal microstructure 6 for absorbing low-frequency vibrations; Specifically, a plurality of first holes 3 are provided at intervals on the high-frequency vibration damping disk 1, and the first phononic crystal microstructures 5 are embedded in the first holes 3; A plurality of second holes 4 are provided at intervals on the low-frequency vibration damping disk 2, and the second phononic crystal microstructures 6 are embedded in the second holes 4; The resonance frequency of the first phononic crystal microstructure 5 is higher than the resonance frequency of the second phononic crystal microstructure 6 .

[0038] In this embodiment, a first hole 3 and a second hole 4 are respectively opened on the high-frequency vibration damping disk 1 and the low-frequency vibration damping disk 2, so that the first phononic crystal microstructure 5 and the second phononic crystal microstructure 6 are respectively embedded in the high-frequency vibration damping disk 1 and the low-frequency vibration damping disk 2, thereby forming a double-layer vibration damping unit embedded structure. The resonance frequencies of the first phononic crystal microstructure 5 and the second phononic crystal microstructure 6 are designed to be different, so that the double-layer micro-embedded structure formed by the vibration damping component as a whole can suppress different vibration frequencies of the washing machine, and more comprehensively reduce the noise generated during the high-frequency or low-frequency operation of the washing machine.

[0039] In this embodiment, when the number of first phononic crystal microstructures 5 and first holes 3 is equal, the first phononic crystal microstructures 5 correspond to the first holes 3 one by one, that is, each first phononic crystal microstructure 5 is arranged in the corresponding first hole 3. When the number of first phononic crystal microstructures 5 is less than the number of first holes 3, a local defect design is used to introduce local defects in the periodic arrangement of the first phononic crystal microstructures 5, such as the lack of one or several first phononic crystal microstructures 5, that is, there is at least one first hole 3 that is an empty nest, so that the high-frequency vibration damping disk 1 produces local resonance, forms a new vibration frequency band within a specific frequency range, and further improves the vibration reduction effect.

[0040] Through the combined design of the high-frequency vibration damping disc 1 and the low-frequency vibration damping disc 2, the vibration damping assembly as a whole is suitable for the high-frequency vibration and low-frequency vibration of the washing machine, and effectively reduces the noise generated by the high-frequency vibration and the low-frequency vibration.

[0041] Optionally, in an implementation of this embodiment, as Figure 1 , 3 As shown, A vibration absorbing insulating layer 7 is provided between the high-frequency vibration damping disc 1 and the low-frequency vibration damping disc 2 .

[0042] like Figure 1 , 3As shown, the provision of the vibration-absorbing insulation layer 7 further absorbs the vibration energy of the high-frequency vibration-damping disc 1 and the low-frequency vibration-damping disc 2 when they are in a vibrating state, and reduces the mutual interference between the high-frequency vibration-damping disc 1 and the low-frequency vibration-damping disc 2 when they are in a vibrating state, so that the two maintain effective vibration within their different vibration frequency bands, thereby having a stronger targeted suppression of vibrations in different frequency bands of the washing machine.

[0043] Optionally, in an implementation of this embodiment, as Figure 1 , 3 , 6, and 7, The high-frequency vibration damping disk 1 and the low-frequency vibration damping disk 2 are arranged in the cavity structure from top to bottom along the vertical direction, and the volume of the first phononic crystal microstructure 5 is smaller than the volume of the second phononic crystal microstructure 6 .

[0044] In this embodiment, it can be known from the dynamic balance law of the washing machine suspension system that the lateral swing and up and down jumping of the chassis in the vibration mode caused by the drum will have a greater impact on the user experience, and these two types of vibrations are usually most likely to cause vibration noise problems in the low-frequency speed-up stage (100-300rpm) and the high-frequency stable stage (about 800rpm). The high-frequency vibration damping plate 1 and the low-frequency vibration damping plate 2 are designed to be arranged from top to bottom in the vertical direction, and the volume of the first phononic crystal microstructure 5 is smaller than that of the second phononic crystal microstructure 6. The first phononic crystal microstructure 5 has a smaller volume and has a higher The vibration frequency of the high-frequency vibration damping plate 1 makes the high-frequency vibration damping part, which can effectively suppress the high-frequency vibration. The high-frequency vibration damping plate 1 is designed to be located on the upper side, close to the chassis. Compared with the low-frequency vibration damping plate 2 which is closer to the ground, it is easier to generate high-frequency vibration and suppress the high-frequency vibration of the chassis. The second phononic crystal microstructure 6 has a larger volume and a lower vibration frequency, which makes the low-frequency vibration damping plate 2 a low-frequency vibration damping part, which can effectively suppress the low-frequency vibration. This design enables the vibration damping component as a whole to suppress the vibration of the washing machine more specifically and effectively reduce noise.

[0045] The high-frequency vibration damping plate 1 and the low-frequency vibration damping plate 2 are arranged from top to bottom in the vertical direction, which is closer to the washing machine and easier to generate the same high-frequency vibration as the washing machine. In the resonant state, the high-frequency vibration damping plate 1 can more effectively absorb and dissipate the vibration energy, thereby reducing the transmission of vibration and the impact on the washing machine, thereby achieving the best vibration damping effect. The low-frequency vibration damping plate 2 is closer to the ground, and its own vibration is easily suppressed by the ground. When the washing machine vibrates at a low frequency, it generates the same low-frequency vibration as the washing machine. In the resonant state, the high-frequency vibration damping plate 1 can more effectively absorb and dissipate the vibration energy, thereby reducing the transmission of vibration and the impact on the washing machine, thereby achieving the best vibration damping effect.

[0046] Optionally, in an implementation of this embodiment, as Figure 4-7 As shown, The first phononic crystal microstructure 5 is constructed as a column or a sphere; the second phononic crystal microstructure 6 is constructed as a column or a sphere.

[0047] In this embodiment, the first phononic crystal microstructure 5 is a column or a sphere, and the second phononic crystal microstructure 6 is a column or a sphere, which is easy to shape. The column can be a circular cylinder or a square cylinder. The column or sphere is selected as the vibration damper according to different working conditions of the washing machine. For example, compared with the columnar vibration damper, the spherical vibration damper will improve the vibration damping effect from two-dimensional vibration damping to three-dimensional vibration damping, and can at least suppress the vibration caused by the vibration source in three directions, thereby achieving a vibration damping effect with multiple degrees of freedom.

[0048] Preferably, the first phononic crystal microstructure 5 is a cylinder composed of a low-density, high-damping lightweight plastic material or a composite material, the aperture of the first hole 3 is 3 mm, the diameter of the first phononic crystal microstructure 5 arranged on the inner side thereof is adapted to the aperture of the first hole 3, and the spacing between adjacent first holes 3 is L1, L1 = 6 mm; the second phononic crystal microstructure 6 is a cylinder composed of a low-density, high-damping lightweight plastic material or a composite material, the aperture of the second hole 4 is 4 mm, the diameter of the second phononic crystal microstructure 6 arranged on the inner side thereof is adapted to the aperture of the second hole 4, and the spacing between adjacent second holes 4 is L2, L2 = 8 mm.

[0049] A simulation experiment was conducted on the above vibration reduction components. Figure 8 is the energy band diagram of the vibration reduction component, Figure 8 It can be seen that the vibration reduction component has a completely forbidden band near 55Hz-60Hz, which can block the propagation of elastic waves in any direction in the plane. At the same time, there is also a forbidden band at 20Hz-25Hz, which can block the propagation of elastic waves in a fixed direction. Therefore, the vibration reduction component proposed in this embodiment can prevent the propagation of vibration waves within a certain range and has a good vibration reduction effect.

[0050] Optionally, in an implementation of this embodiment, as Figure 1 , 3 As shown, The high-frequency vibration damping disc 1 , the low-frequency vibration damping disc 2 and the vibration absorbing insulating layer 7 are all constructed as a plate structure.

[0051] In this embodiment, the high-frequency vibration damping plate 1, the low-frequency vibration damping plate 2 and the vibration absorbing insulation layer 7 are all plate structures, and the three form a whole, which is suitable as the base of the washing machine. A flexible connection can be used between the base and the washing machine to ensure that the vibration damping assembly as a whole has effective vibration.

[0052] Optionally, in an implementation of this embodiment, as Figure 1-3 As shown, The vibration reduction assembly also includes: a connecting member 8, one end of which is connected to the high-frequency vibration reduction disk 1, and the other end of which is used to be connected to the chassis of the device.

[0053] In this embodiment, the connection member 8 is provided to facilitate the connection between the vibration reduction assembly and the chassis of the device.

[0054] Optionally, in an implementation of this embodiment, as Figure 1-2 As shown, The connecting member 8 is constructed as a screw rod, and a pad 9 is screwed onto the connecting member 8 . The pad 9 is used to abut against a chassis of the device.

[0055] In this embodiment, the chassis is connected through the screw device, so that the vibration reduction assembly is located at the lower end of the chassis as a whole to bear the load on the chassis. While the vibration reduction assembly keeps the chassis stable, the bottom wall of the chassis abuts against the pad 9. The setting of the pad 9 increases the contact area between the screw and the bottom wall of the chassis, which helps to prevent the screw from loosening due to external factors such as vibration. At the same time, the pad 9 effectively prevents the bottom wall of the chassis from being damaged due to excessive local pressure.

[0056] Furthermore, the pad body 9 includes a supporting portion 901 and a screw-connecting portion 902 arranged from top to bottom in the vertical direction, the supporting portion 901 is connected to the upper end of the screw-connecting portion 902 , and the screw-connecting portion 902 is screwed to the outer side of the connecting member 8 .

[0057] The threaded portion 902 is constructed as a bolt, which is threaded on the screw rod and is easy to assemble. The bottom wall of the chassis abuts against the abutment portion 901. The setting of the abutment portion 901 increases the contact area between the screw rod and the bottom wall of the chassis, which helps prevent the screw rod from loosening due to external factors such as vibration. At the same time, the abutment portion 901 shares the squeezing force of the bolt on the bottom wall of the chassis, effectively avoiding damage to the bottom wall of the chassis due to excessive local pressure.

[0058] Optionally, in an implementation of this embodiment, as Figure 1-2 As shown, The base foot 10 is constructed as a sleeve, and the base foot 10 is wrapped around the outside of the high-frequency vibration damping disc 1 , the low-frequency vibration damping disc 2 and the vibration absorbing insulation layer 7 .

[0059] In the present embodiment, preferably, the base foot 10 is an elastic rubber sleeve, the screw and the high-frequency vibration damping plate 1 are integrally connected, the upper end of the screw is inserted into the bottom wall of the washing machine chassis, four vibration damping assemblies are provided, and the four vibration damping assemblies are respectively provided at the four corners of the bottom wall of the chassis, and the screw can adjust the overall stability of the vibration damping assembly to level the washing machine chassis, and the bottom wall of the base foot 10 is in contact with the ground, and has an anti-slip function. At the same time, it has a certain protective effect on the inner high-frequency vibration damping plate 1, the low-frequency vibration damping plate 2 and the vibration absorbing insulation layer 7 to prevent the three from being affected by the external environment.

[0060] Embodiment 2 In this embodiment, a clothes processing device is provided, comprising: Chassis; The vibration reduction assembly in the first embodiment is arranged at the bottom of the chassis. The connecting member 8 is screwed to the bottom of the chassis and the bottom wall of the chassis abuts against the pad 9.

[0061] In this embodiment, the laundry processing device is taken as an example for explanation. The first hole 3 and the second hole 4 are respectively opened on the high-frequency vibration damping plate 1 and the low-frequency vibration damping plate 2, so that the first phononic crystal microstructure 5 and the second phononic crystal microstructure 6 are respectively embedded in the high-frequency vibration damping plate 1 and the low-frequency vibration damping plate 2, so that the vibration damping component as a whole constitutes a double-layer micro-embedded structure. The resonance frequencies of the first phononic crystal microstructure 5 and the second phononic crystal microstructure 6 are designed to be different, so that the double-layer micro-embedded structure constituted by the vibration damping component as a whole can suppress the different vibration frequencies of the washing machine, and more comprehensively reduce the noise generated during the high-frequency operation or low-frequency operation of the washing machine. When the washing machine vibrates during operation, the local resonance characteristics of the phononic crystal structure are activated, and the air or lightweight plastic cavities in the crystal microstructure are relatively displaced from the rigid material skeleton, thereby absorbing the vibration energy. In addition, the phononic crystal structure itself can be optimized to design the phononic crystal structure into a multi-band vibration reduction structure, that is, a phononic crystal contains multiple vibration reduction units of different sizes and arrangements, and each unit corresponds to a specific vibration frequency band, to achieve a wide-band vibration reduction effect, so that it can achieve effective local resonance in multiple vibration frequency bands, adapt to vibrations under different working conditions, and accurately control the frequency band gap according to the common frequencies of different models to improve the vibration reduction effect.

[0062] When the number of the first phononic crystal microstructures 5 and the first holes 3 are equal, the first phononic crystal microstructures 5 correspond to the first holes 3 one by one, that is, each first phononic crystal microstructure 5 is arranged in the corresponding first hole 3. When the number of the first phononic crystal microstructures 5 is less than the number of the first holes 3, a local defect design is adopted to introduce local defects in the periodic arrangement of the first phononic crystal microstructures 5, such as the lack of one or several first phononic crystal microstructures 5, that is, there is at least one first hole 3 that is an empty nest, so that the high-frequency vibration damping disk 1 produces local resonance, forms a new vibration frequency band within a specific frequency range, and further improves the vibration damping effect.

[0063] It can be seen from the dynamic balance law of the washing machine suspension system that the lateral swing and up and down jumping of the chassis in the vibration mode caused by the drum have a greater impact on the user experience. These two types of vibrations are usually most likely to cause vibration noise problems in the low-frequency speed-up stage (100-300rpm) and the high-frequency stable stage (about 800rpm). The high-frequency vibration damping plate 1 and the low-frequency vibration damping plate 2 are designed to be arranged from top to bottom in the vertical direction, and the volume of the first phononic crystal microstructure 5 is smaller than that of the second phononic crystal microstructure 6. The first phononic crystal microstructure 5 has a smaller volume and has a higher vibration The frequency makes the high-frequency vibration damping plate 1 a high-frequency vibration damping part, which can effectively suppress high-frequency vibrations. The high-frequency vibration damping plate 1 is designed to be located on the upper side, close to the chassis. Compared with the low-frequency vibration damping plate 2 which is closer to the ground, it is easier to generate high-frequency vibrations and suppress the high-frequency vibrations of the chassis. The second phononic crystal microstructure 6 is larger in volume and has a lower vibration frequency, which makes the low-frequency vibration damping plate 2 a low-frequency vibration damping part, which can effectively suppress low-frequency vibrations. This design enables the vibration damping component as a whole to suppress the vibration of the washing machine more specifically and effectively reduce noise.

[0064] The chassis is connected through the screw device, so that the vibration reduction assembly is located at the lower end of the chassis as a whole to bear the load on the chassis. While the vibration reduction assembly keeps the chassis stable, the bottom wall of the chassis abuts against the pad 9. The abutting portion 901 is a gasket structure, which increases the contact area between the screw and the bottom wall of the chassis, and helps prevent the screw from loosening due to external factors such as vibration. At the same time, the abutting portion 901 shares the squeezing force of the bolt on the bottom wall of the chassis, effectively avoiding damage to the bottom wall of the chassis due to excessive local pressure.

[0065] The screw and the high-frequency vibration damping plate 1 are integrally connected, and the upper end of the screw is inserted into the bottom wall of the washing machine chassis. Four vibration damping components are provided, and the four vibration damping components are respectively arranged at the four corners of the bottom wall of the chassis. The screw can adjust the overall stability of the vibration damping component to level the washing machine chassis. The bottom wall of the base foot 10 is in contact with the ground and has an anti-slip function. At the same time, it has a certain protective effect on the inner high-frequency vibration damping plate 1, the low-frequency vibration damping plate 2 and the vibration absorbing insulation layer 7 to prevent the three from being affected by the external environment.

[0066] In summary, the ingenious design of the vibration reduction component is: First, the phononic crystal structure is designed to include multiple layers of vibration reduction units. Each vibration reduction unit corresponds to a specific vibration frequency band to achieve a wide-band vibration reduction effect, so that it can achieve effective local resonance in multiple vibration frequency bands and adapt to vibrations under different working conditions. The frequency band gap can be accurately adjusted according to the common frequencies of different models to improve the vibration reduction effect.

[0067] Second, a first hole and a second hole are respectively opened on the high-frequency vibration damping disk and the low-frequency vibration damping disk, so that the first phononic crystal microstructure and the second phononic crystal microstructure are respectively embedded in the high-frequency vibration damping disk and the low-frequency vibration damping disk to form a double-layer micro-embedded structure. The resonance frequencies of the first phononic crystal microstructure and the second phononic crystal microstructure are designed to be different, so that the vibration damping component as a whole can suppress the different vibration frequencies of the washing machine, and more comprehensively reduce the noise generated during the high-frequency operation or low-frequency operation of the washing machine. When the washing machine vibrates during operation, the local resonance characteristics of the phononic crystal structure are activated, and the air or lightweight plastic cavities in the crystal microstructure and the rigid material skeleton are relatively displaced, thereby absorbing the vibration energy. In addition, the phononic crystal structure itself can be optimized to design the phononic crystal structure into a multi-band vibration damping structure, that is, a phononic crystal contains multiple vibration damping units of different sizes and arrangements, each unit corresponds to a specific vibration frequency band, and a wide-band vibration damping effect is achieved, so that it can achieve effective local resonance in multiple vibration frequency bands, adapt to vibrations under different working conditions, and can accurately adjust the frequency band gap according to the common frequencies of different models to improve the vibration damping effect. In addition to the above advantages, the vibration reduction component also has the advantages of environmental protection and energy saving. It uses physical principles to reduce vibration, does not require additional energy, is environmentally friendly and energy-saving, and embeds the phononic crystal structure into the vibration reduction component. The structure is compact, does not increase additional space, and is easy to install and maintain. The vibration reduction component is not only suitable for washing machines, but can also be used in other household appliances, mechanical equipment and other fields that generate vibration during operation, and has broad application prospects.

[0068] Thirdly, the high-frequency vibration damping plate and the low-frequency vibration damping plate are designed to be arranged from top to bottom in the vertical direction, and the volume of the first phononic crystal microstructure is smaller than that of the second phononic crystal microstructure. The first phononic crystal microstructure is smaller in volume and has a higher vibration frequency, so that the high-frequency vibration damping plate becomes a high-frequency vibration damping component, which can effectively suppress high-frequency vibrations. The high-frequency vibration damping plate is designed to be located on the upper side, close to the chassis. Compared with the low-frequency vibration damping plate that is closer to the ground, it is easier to generate high-frequency vibrations and suppress the high-frequency vibrations of the chassis. The second phononic crystal microstructure is larger in volume and has a lower vibration frequency, so that the low-frequency vibration damping plate becomes a low-frequency vibration damping component, which can effectively suppress low-frequency vibrations. This design enables the vibration damping component as a whole to suppress the vibration of the washing machine in a more targeted manner and effectively reduce noise.

[0069] Fourth, the first phononic crystal microstructure is a column or a sphere, and the second phononic crystal microstructure is a column or a sphere, which is easy to shape. The column can be a circular cylinder or a square cylinder. The column or sphere is selected as the vibration damper according to different working conditions of the washing machine. For example, compared with the columnar vibration damper, the spherical vibration damper will improve the vibration damping effect from two-dimensional vibration damping to three-dimensional vibration damping, and can at least suppress the vibration caused by the vibration source in three directions, thereby achieving a vibration damping effect with multiple degrees of freedom.

[0070] Fifth, the setting of the vibration-absorbing insulation layer further absorbs the vibration energy of the high-frequency vibration damping plate and the low-frequency vibration damping plate when they are in a vibrating state, and reduces the mutual interference between the high-frequency vibration damping plate and the low-frequency vibration damping plate when they are in a vibrating state, so that the two can maintain effective vibration within their different vibration frequency bands, thereby having a stronger targeted effect on the suppression of vibrations in different frequency bands of the washing machine.

[0071] It is further understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar thereto. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0072] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0073] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0074] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0075] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A vibration reduction assembly, used for equipment that generates vibration during operation, characterized in that: include: A base (10), the base (10) being a cavity structure, wherein a phononic crystal structure is embedded in the cavity structure; The phononic crystal structure includes multiple layers of different vibration reduction units, and the multiple layers of different vibration reduction units are configured to correspond to different vibration frequency bands of the device; The multiple layers of different vibration damping units include a high-frequency vibration damping disk (1) and a low-frequency vibration damping disk (2), wherein a first phononic crystal microstructure (5) for absorbing high-frequency vibrations is embedded in the high-frequency vibration damping disk (1), and a second phononic crystal microstructure (6) for absorbing low-frequency vibrations is embedded in the low-frequency vibration damping disk (2).

2. The vibration reduction assembly according to claim 1, characterized in that: The multiple layers of different vibration damping units are constructed to have different vibration damping material properties and / or pore structure sizes of phonon band gaps and / or pore arrangement modes of phonon band gaps and / or period lengths of pore arrangement of phonon band gaps, and each vibration damping unit corresponds to a specific vibration frequency band.

3. The vibration reduction assembly according to claim 1, characterized in that: A vibration absorbing insulating layer (7) is provided between the high-frequency vibration damping disc (1) and the low-frequency vibration damping disc (2).

4. The vibration reduction assembly according to claim 3, characterized in that: The high-frequency vibration damping disk (1) is provided with a plurality of first holes (3) at intervals, and the first phononic crystal microstructure (5) is embedded in the first holes (3); A plurality of second holes (4) are provided at intervals on the low-frequency vibration damping disk (2), and the second phononic crystal microstructure (6) is embedded in the second hole (4); Wherein, the resonance frequency of the first phononic crystal microstructure (5) is higher than the resonance frequency of the second phononic crystal microstructure (6).

5. The vibration reduction assembly according to claim 4, characterized in that: The high-frequency vibration-absorbing disk and the low-frequency vibration-absorbing disk are made of high-density rigid materials; The first phononic crystal microstructure (5) and the second phononic crystal microstructure (6) are made of low-density high-damping material.

6. The vibration reduction assembly according to claim 4, characterized in that: The high-frequency vibration damping disk (1) and the low-frequency vibration damping disk (2) are arranged in the cavity structure from top to bottom along the vertical direction, and the volume of the first phononic crystal microstructure (5) is smaller than the volume of the second phononic crystal microstructure (6).

7. The vibration reduction assembly according to any one of claims 3 to 6, characterized in that: The vibration reduction assembly also includes: A connecting piece (8), one end of the connecting piece (8) is connected to the high-frequency vibration damping disk (1), and the other end is used to be connected to the chassis of the device.

8. The vibration reduction assembly according to claim 7, characterized in that: The connecting member (8) is constructed as a screw rod, and a pad body (9) is screwed onto the connecting member (8), and the pad body (9) is used to abut against a chassis of the device.

9. The vibration reduction assembly according to claim 8, characterized in that: The pad body (9) comprises a supporting portion (901) and a screw-connecting portion (902) arranged from top to bottom in the vertical direction, the supporting portion (901) being connected to the upper end of the screw-connecting portion (902), and the screw-connecting portion (902) being screw-connected to the outer side of the connecting member (8).

10. The vibration reduction assembly according to claim 3, characterized in that: The base foot (10) is constructed as a sleeve, and the base foot (10) is wrapped around the outside of the high-frequency vibration damping disc (1), the low-frequency vibration damping disc (2) and the vibration absorbing insulation layer (7).

11. A clothes processing device, characterized in that: include: Chassis; The vibration damping assembly according to any one of claims 1 to 7, wherein the vibration damping assembly is arranged at the bottom of the chassis.

12. A clothes processing device, characterized in that: include: Chassis; The vibration reduction assembly according to any one of claims 8 to 10, wherein the connecting member (8) is screwed to the bottom of the chassis and the bottom wall of the chassis abuts against the cushion body (9); The connecting member (8) is a rigid member.

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