Silencing devices and fabric treatment equipment

Abstract

This invention relates to the field of noise reduction equipment technology, and in particular to a noise reduction device and fabric processing equipment. The noise reduction device includes a main pipe noise reduction component and an end noise reduction component along the direction from the bottom to the opening of the fabric processing cylinder. The main pipe noise reduction component is sleeved on the fabric processing cylinder and surrounds the drive motor. A protruding end is formed at the location of the drive motor on the main pipe noise reduction component, which is used to reduce noise during the operation of the fabric processing cylinder. The end noise reduction component is connected to the protruding end by screwing, and is used to reduce and absorb noise during the operation of the drive motor. This invention utilizes the main pipe noise reduction component and the end noise reduction component to reduce and absorb noise from the fabric processing cylinder and the drive motor respectively, controlling the noise generated by the fabric processing equipment at its source and effectively improving the user experience of the fabric processing equipment.

Description

Technical Field

[0001] This invention relates to the field of noise reduction equipment technology, and in particular to a noise reduction device and fabric treatment equipment. Background Technology

[0002] The widespread use of front-loading washing machines has brought great convenience to people's daily lives, freeing their hands after a long day's work and making the washing machine an indispensable part of people's lives. However, along with this convenience, the vibration and noise generated during the operation of washing machines has also become a problem. In the mature field of washing machine vibration reduction and noise reduction, the focus is mainly on the design of the motor or drum. For example, vibration dampers can be used to reduce the vibration of the drum component or the motor, but this requires specialized design and installation of vibration dampers. Summary of the Invention

[0003] In view of this, the present invention provides a noise reduction device and a fabric processing equipment, which solves the problem that the noise generated during the operation of existing fabric processing equipment leads to a poor user experience.

[0004] A first aspect of the present invention provides a noise reduction device applicable to fabric processing equipment, the fabric processing equipment including a fabric processing cylinder and a drive motor for driving the fabric processing cylinder, the drive motor being located at the rear side of the fabric processing cylinder, the noise reduction device comprising:

[0005] A main pipe silencer is provided along the direction from the bottom to the opening of the fabric processing cylinder. The main pipe silencer is used to sleeve the fabric processing cylinder and wrap the drive motor. The main pipe silencer has a protruding end at the location of the drive motor. The main pipe silencer is used to reduce the noise of the fabric processing cylinder when it is running. The end of the main pipe silencer away from the end silencer is used to connect to the fabric processing cylinder through a fastener.

[0006] An end silencer is provided, which is connected to the protruding end. The end silencer forms a silencer cavity, which is connected to the main pipe silencer. Multiple sound-absorbing rings are arranged at intervals along the axial direction of the silencer cavity inside the silencer cavity. Each sound-absorbing ring has a sound-absorbing port. The diameters of the sound-absorbing ports of two adjacent sound-absorbing rings are different, and the diameter of the sound-absorbing port of the sound-absorbing ring closer to the drive motor is the largest.

[0007] The end-effector is configured to reduce and absorb noise during the operation of the drive motor.

[0008] In some embodiments, the end muffler is a columnar structure, and the end muffler includes a connecting end and a muffler end;

[0009] The connecting end and the protruding end are detachably connected;

[0010] The silencing end is connected to the connecting end, and the silencing end adopts a knob-type telescopic structure to form a silencing structure with adjustable length.

[0011] In some embodiments, the silencing end includes a circular tube and a plurality of sound-absorbing rings disposed within the circular tube and spaced apart, wherein the interior of the circular tube is configured as the silencing cavity, and the plurality of sound-absorbing rings are spaced apart within the circular tube.

[0012] Along the direction from the bottom of the fabric treatment cylinder to the opening, the diameter of the sound-absorbing openings of the plurality of sound-absorbing rings increases in a stepped manner.

[0013] In some embodiments, the diameter of the sound-absorbing port on any of the sound-absorbing rings is negatively correlated with the distance from the sound-absorbing ring to the connection end.

[0014] In some embodiments, the diameter of the end silencer is defined as R, the distance from any of the sound-absorbing rings to the connection end is x, and the total length of the end silencer is L. Then, the diameter r of the sound-absorbing port on the sound-absorbing ring at a distance x is the difference between the diameter R of the end silencer and the first product value.

[0015] Wherein, the first product value is the product of the distance coefficient K and the distance x, and the distance coefficient K is the quotient of the diameter R of the end muffler and the total length L of the end muffler.

[0016] In some embodiments, the total length L of the end muffler is in the range of 5mm ≤ L ≤ 220mm.

[0017] In some embodiments, a plurality of dampers are provided on the bottom side of the fabric treatment tube;

[0018] The silencing device also includes a first pipe silencing component;

[0019] The first branch pipe silencer is connected to the main pipe silencer by a knob, and there are multiple first branch pipe silencers, with each of the multiple first branch pipe silencers corresponding to and covering the outer surface of the multiple dampers.

[0020] A sealing strip is provided at the connection point between the first pipe silencer and the damper.

[0021] In some embodiments, an elastic element is provided on the top side of the fabric treatment tube;

[0022] The silencing device also includes a second pipe silencing component;

[0023] The second pipe silencer is connected to the main pipe silencer by a knob, and the second pipe silencer covers the outer surface of the elastic member.

[0024] In some embodiments, the end of the main duct silencer away from the end silencer is used to connect to the fabric treatment tube via a snap-fit ​​device.

[0025] A second aspect of the present invention provides a fabric processing apparatus, the fabric processing apparatus including a fabric processing cylinder and a noise reduction device as described in the first aspect.

[0026] Compared with the prior art, the main advantages of the present invention are as follows:

[0027] In the silencing device and fabric processing equipment of the present invention, the silencing device includes a main pipe silencing component and an end silencing component along the direction from the bottom to the opening of the fabric processing cylinder. The main pipe silencing component is sleeved on the fabric processing cylinder and wraps around the drive motor. The main pipe silencing component has a protruding end at the position of the drive motor. The main pipe silencing component is used to reduce the noise when the fabric processing cylinder is running. The end silencing component is detachably connected to the protruding end. A silencing cavity communicating with the main pipe silencing component is formed inside the end silencing component. Multiple spaced sound-absorbing rings are arranged in the silencing cavity. Each sound-absorbing ring has a sound-absorbing port. The diameters of the sound-absorbing ports of two adjacent sound-absorbing rings are different, and the diameter of the sound-absorbing port of the sound-absorbing ring closer to the drive motor is the largest. The end silencing component is configured to reduce the noise when the drive motor is running. In this invention, multiple sound-absorbing rings in the main pipe silencer and the end silencer are used to reduce noise and absorb sound from the fabric processing cylinder and the drive motor, thereby controlling the noise generated by the fabric processing equipment during operation from the source and effectively improving the user's experience of using the fabric processing equipment. Attached Figure Description

[0028] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0029] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0030] Figure 1 This is a schematic diagram of a noise reduction device installed on a fabric processing equipment according to an embodiment of the present invention.

[0031] Figure 2 This is a schematic diagram of the structure of the end-stage silencing component in a silencing device according to an embodiment of the present invention;

[0032] Figure 3 yes Figure 2 A cross-sectional view at position AA in the middle;

[0033] Figure 4 yes Figure 2 Front view.

[0034] Figure label:

[0035] 10. Fabric processing equipment; 11. Fabric processing cylinder; 111. Protruding end; 112. Elastic element; 12. Drive motor; 13. Damper;

[0036] 100. Silencing device; 110. Main pipe silencer; 120. End silencer; 121. Connection end; 122. Silencing end; 12a. Circular pipe body; 12b. Sound-absorbing ring; 12c. Sound-absorbing port; 130. First branch pipe silencer; 140. Second branch pipe silencer; 150. Fastening component. Detailed Implementation

[0037] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0039] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0040] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0041] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0042] like Figures 1 to 4 As shown, an exemplary embodiment of the present invention provides a noise reduction device 100 that can be applied to a fabric processing device 10.

[0043] The fabric treatment equipment 10 may include, but is not limited to, a washing machine, which may include, but is not limited to, a washer-dryer combo, or a washing and conditioning combo. For example, the washing machine may be a front-loading washing machine or a top-loading washing machine with drying or washing and conditioning functions. Of course, the washing machine may also be other types of fully automatic washing machines. In this example and the examples below, the fabric treatment equipment is described using a front-loading washing machine as an example.

[0044] The fabric processing equipment 10 includes a fabric processing cylinder 11 and a drive motor 12, which drives the fabric processing cylinder 11 to rotate within the fabric processing equipment 10.

[0045] The drive motor 12 is located at the rear of the fabric processing cylinder 11, meaning that the drive motor 12 can protrude from the bottom of the fabric processing cylinder 11.

[0046] The silencer 100 includes a main pipe silencer 110 and an end silencer 120.

[0047] The direction from the bottom to the opening of the fabric processing cylinder 11 is defined as the first direction X. The main pipe noise reduction component 110 is sleeved on the fabric processing cylinder 11 along the first direction X and wrapped around the drive motor 12. This sleeved arrangement can effectively cover the surface of the fabric processing cylinder 11, thereby maximizing its noise reduction function.

[0048] On the other hand, the drive motor 12 will generate some noise during operation. By using the main pipe silencer 110 to wrap the drive motor 12, the noise generated by the drive motor 12 in its axial direction can be directly blocked and absorbed, reducing the noise from propagating outward in a direction perpendicular to the first direction X.

[0049] It should be noted that the bottom of the main pipe muffler 110 is completely wrapped around the outer surface of the drive motor 12, and along the direction opposite to the first direction X, the main pipe muffler 110 has a protruding end 111 formed on the rear side wall of the drive motor 12. The formation of this protruding end 111 can better adapt to the shape and structural characteristics of the drive motor 12.

[0050] Since the size and shape of the drive motor 12 are different from those of the fabric processing tube 11, forming a protruding end 111 at its location can ensure that the main pipe silencing component 110 fits tightly with the drive motor, and there will be no dead angle for noise reduction due to shape mismatch, thereby ensuring efficient noise reduction around the drive motor 12.

[0051] The main duct silencer 110 is used to reduce noise during the operation of the fabric processing cylinder 11. During operation, the fabric processing cylinder 11 generates noise of varying frequencies and intensities due to internal mechanical movement, friction between the fabric and the cylinder wall, and other factors. The main duct silencer 110, through its material properties and structural design, can effectively absorb, reflect, and scatter this noise, thereby reducing the noise intensity propagating outward from the fabric processing cylinder 11.

[0052] like Figures 1 to 4 As shown, in some embodiments, the end of the main pipe silencer 110 away from the end silencer 120 is connected to the fabric treatment tube 11 via a snap fastener 150.

[0053] The fastener 150 can be a snap ring or a buckle. For example, a 5mm groove can be made at the connection position between the top of the fabric treatment cylinder 11 and the main pipe silencer 110, and the main pipe silencer 110 can be fixed to the fabric treatment cylinder 11 in a self-locking manner. Specifically, it can be set on the outer wall of the outer cylinder of the fabric treatment cylinder 11.

[0054] The snap-fit ​​connection 150 ensures a tight seal between the main duct silencer 110 and the fabric treatment cylinder 11. During operation, the fabric treatment cylinder 11 generates noise, and the main duct silencer 110 reduces its propagation. The snap-fit ​​connection 150 prevents noise waves from leaking out from the connection point between the main duct silencer 110 and the fabric treatment cylinder 11, thus ensuring the integrity of the noise reduction effect.

[0055] Meanwhile, the snap-fit ​​connection of the snap-fit ​​component 150 also facilitates later maintenance and repair, greatly reducing the difficulty and cost of maintaining the fabric processing equipment 10.

[0056] like Figure 1 As shown, in one example, the main duct silencer 110 is shaped like a pipe, such as a cylindrical shell adapted to the outer surface of the fabric processing cylinder 11. The length a of the cylindrical shell is 460 mm, the distance d from the end of the shell is 30 mm, and the distance a between the cylindrical shell and the fabric processing cylinder 11 is more than 5 mm. In order to improve the noise reduction effect, the distance c between the added cylindrical shell and the fabric processing cylinder 11 component is as large as possible while ensuring sufficient internal space in the fabric processing equipment 10. The cylindrical shell can be made of 5 mm thick aluminum alloy plate to form a circular pipe shell, forming a completely closed model.

[0057] The protruding ends of the end silencer 120 and the main pipe silencer 110 are detachably connected, and the two can be connected by a knob. This connection method makes the entire silencer 100 an organic whole. In addition, the knob connection can maintain good performance after multiple disassemblies and reconnections, effectively reducing the need to replace new connectors and lowering maintenance costs. At the same time, it also makes the assembly process of the end silencer 120 and the main pipe silencer 110 simpler and faster, without the need for additional tools or complicated assembly steps.

[0058] On the other hand, the knob connection design allows the connection between the end silencer 120 and the main pipe silencer 110 to effectively absorb the mechanical vibration and impact of the fabric processing equipment 10.

[0059] The protruding end 111 is the part that is tightly connected to the main pipe silencer 110 and the drive motor 12. The end silencer 120 is connected to it and can directly process the noise when the drive motor 12 is running. This achieves a seamless connection of the noise transmission path from the main pipe silencer 110 to the end silencer 120, avoiding noise leakage at the connection point.

[0060] The end-effector 120 can be used to reduce and absorb noise from the drive motor 12 during operation. The drive motor 12 generates noise of specific frequencies and intensities during operation. The end-effector 120 can employ specialized sound-absorbing materials and structural designs to specifically absorb this noise. For example, the end-effector 120 can use porous sound-absorbing materials. The small pores in these materials allow noise waves to enter and be continuously reflected and rubbed internally, converting sound energy into heat energy, thereby reducing noise. Combined with the function of the main duct silencer 110, it can comprehensively reduce noise from the main noise source, the drive motor 12, in the fabric processing equipment 10, improving the overall quietness of the fabric processing equipment.

[0061] like Figures 2 to 4 As shown, in one example, the end-effector 120 can be designed as a structure similar to an acoustic black hole model. An acoustic black hole (ABH) is a specially designed structure that efficiently absorbs sound wave energy, similar to how black holes in astronomy absorb matter and light. Acoustic black hole models typically consist of a specific geometry. When sound waves enter the ABH, their propagation speed gradually decreases, causing wavelength compression. This wavelength compression continues until the wave speed drops to zero, preventing the incident wave from propagating to the end of the structure. Once the sound waves enter the ABH, they are trapped and completely absorbed without any reflection, ultimately concentrating and dissipating the sound energy to achieve noise absorption.

[0062] A silencing cavity communicating with the main pipe silencing component 110 is formed within the end silencing component 120. Multiple sound-absorbing rings 12b are arranged at intervals along its axial direction, i.e., the first direction X. Each sound-absorbing ring 12b has a sound-absorbing port 12c. When noise waves propagate to the vicinity of the sound-absorbing ring 12b, the sound-absorbing port 12c can guide the noise waves into the interior of the sound-absorbing ring 12b. The multiple spaced sound-absorbing rings 12b can cause the noise waves to undergo multiple reflections and refractions when propagating within the silencing cavity, increasing the chance of the noise waves interacting with the sound-absorbing rings 12b, thereby improving the silencing effect.

[0063] Among them, the sound-absorbing port 12c of the sound-absorbing ring 12b closest to the drive motor 12 has the largest diameter, so that when the drive motor 12 rotates, the noise generated by the drive motor 12 can be effectively transmitted to the sound-absorbing cavity.

[0064] It should be noted that the diameters of the sound-absorbing openings 12c of two adjacent sound-absorbing rings 12b are different. That is to say, along the direction away from the first direction X, the edges of multiple sound-absorbing openings 12c can present various shapes, such as wavy, corrugated, tapered, arc, etc.

[0065] In one example, the diameter of the sound-absorbing port 12c increases in a stepped manner along the direction away from the first direction X. As noise waves propagate in this direction, their energy and frequency change; for example, energy dispersion and frequency reduction may occur. The gradually decreasing diameter of the sound-absorbing port 12c accommodates these changes. A larger sound-absorbing port 12c can capture more of the dispersed sound waves, resulting in better absorption of low-frequency noise. This stepped increase in the diameter of the sound-absorbing port 12c along the direction away from the first direction X allows for targeted treatment of noise with different characteristics in different areas, thereby improving the silencing efficiency and effect of the entire silencing end 122 and even the entire silencing device 100.

[0066] In a specific example, the end-effector 120 is a columnar structure. The columnar structure has a relatively regular spatial layout, facilitating installation and positioning within the fabric processing equipment 10. The surface area to volume ratio of the columnar structure is relatively moderate, effectively utilizing space while ensuring a certain level of noise reduction. Furthermore, the columnar structure exhibits good stability. During the operation of the fabric processing equipment 10, it may be affected by external forces such as vibration and impact. The columnar end-effector 120 can better withstand these external forces, maintaining its structural integrity and thus ensuring the stable operation of its noise reduction function.

[0067] The end silencer 120 includes a connecting end 121 and a silencer end 122.

[0068] The connecting end 121 is detachably connected to the protruding end 111. This detachable connection greatly facilitates the maintenance, repair, and replacement of the end silencer 120 and the main pipeline silencer 110. In practical use, if the end silencer 120 is damaged or requires performance upgrades, the detachable connecting end 121 allows operators to easily remove it from the protruding end 111 without requiring extensive disassembly of the entire main pipeline silencer 110.

[0069] The silencing end 122 is connected to the connecting end 121, and the silencing end 122 adopts a knob-type telescopic structure to form a length-adjustable silencing structure. This adjustable structure can be applied to different noise sources and propagation environments, and provides an effective solution. In different fabric processing equipment 10, the propagation path and intensity distribution of noise may vary. By adjusting the length of the silencing end 122 by knob, the silencing effect can be optimized according to specific conditions.

[0070] Changing the length of the silencing end 122 can affect processes such as sound wave reflection, absorption, and interference. When the silencing end 122 is elongated, the number of sound wave reflections inside the silencing component increases, thereby increasing sound wave energy loss. When the silencing end 122 is shortened, the interference mode of the sound wave can be changed, effectively suppressing noise at different frequencies. This adjustable structure allows the end silencing component 120 to adapt to a wider range of noise frequencies, improving the adaptability and effectiveness of the entire silencing device 100.

[0071] like Figures 2 to 4 As shown, the silencing end 122 includes a circular tube 12a and a plurality of sound-absorbing rings 12b spaced apart within the circular tube 12a. Each sound-absorbing ring 12b has a sound-absorbing port 12c. The circular tube 12a serves as the main frame of the silencing end 122, providing space for accommodating and supporting the plurality of sound-absorbing rings 12b, thus forming a relatively enclosed space with a specific acoustic structure, which is beneficial for noise treatment.

[0072] Multiple sound-absorbing rings 12b are spaced apart inside the circular tube 12a. When noise waves propagate to the vicinity of the sound-absorbing rings 12b, the sound-absorbing port 12c can guide the noise waves into the interior of the sound-absorbing rings 12b. The multiple spaced sound-absorbing rings 12b can cause the noise waves to undergo multiple reflections and refractions when propagating inside the circular tube 12a, increasing the chance of the noise waves interacting with the sound-absorbing rings 12b, thereby improving the noise reduction effect.

[0073] Along the first direction X, the diameter of the sound-absorbing openings 12c of the plurality of sound-absorbing rings 12b increases in a stepped manner. Furthermore, the diameter of the sound-absorbing opening 12c on any sound-absorbing ring 12b is negatively correlated with the distance from the sound-absorbing ring 12b to the connecting end 121. That is, the closer the ring is to the connecting end 121, the larger the diameter of the sound-absorbing opening 12c.

[0074] As noise propagates in a direction away from the first direction X, the energy and frequency of the noise change; for example, energy dispersion and frequency reduction may occur. The diameter of the sound-absorbing port 12c gradually decreases to adapt to this change. A larger sound-absorbing port 12c can capture more of the dispersed sound waves, resulting in better absorption of low-frequency noise. This step-like increase in the diameter of the sound-absorbing port 12c along the direction away from the first direction X allows for targeted treatment of noise with different characteristics in different areas, thereby improving the silencing efficiency and effect of the entire silencing end 122 and even the entire silencing device 100.

[0075] like Figures 2 to 4As shown, the diameter of the end silencer 120 is defined as R, that is, the diameter of the circular tube 12a is R, the distance from any sound-absorbing ring 12b to the connection end 121 is x, and the total length of the end silencer 120 is L. Then, the diameter r of the sound-absorbing port 12c on the sound-absorbing ring 12b at a distance x is the difference between the diameter R of the end silencer 120 and the first product value, and the first product value is the product of the distance coefficient K and the distance x.

[0076] In one example, the total length L of the end muffler 120 is in the range of 5mm≤L≤220mm, so that the end muffler 120 can be used with multiple sizes of fabric processing tubes 11 and drive motors 12.

[0077] In a preferred example, the total length L of the end-effector 120 is in the range of 7mm≤L≤200mm. The above-mentioned total length range is formed based on the synergistic effect of space and sound attenuation, that is, to balance the combination of installation space and sound attenuation effect.

[0078] Wherein, the distance coefficient K is the quotient of the diameter R of the end muffler 120 and the total length K of the end muffler 120.

[0079] That is to say, Where K = R / L.

[0080] Based on the above calculation formula for r(x), the spacing between two adjacent sound-absorbing rings 12b can be flexibly designed according to different specifications of fabric treatment tubes 11 and drive motors 12.

[0081] In a preferred example, the thickness of the circular tube 12a of the end silencer 120 is 5mm, the spacing between two adjacent sound-absorbing rings 12b is 6mm, and the multiple sound-absorbing rings 12b are arranged at equal intervals. The diameter of the circular tube 12a is 50mm. Based on this, in this example, the acoustic black hole model formed by the end silencer 120 is a knob-type structure, which can be adjusted by changing the length of the end silencer 120 to suit different noise reduction scenarios and achieve better noise reduction effect.

[0082] like Figure 2 As shown, in one example, the length of the connecting end 121 is 5mm. To facilitate the detachable connection between the connecting end 121 and the protruding end 111, a thread 1211 is provided on the inner side of the connecting end 121. That is, the connecting end 121 and the protruding end 111 can be connected by threads, which improves the assembly efficiency between the end muffler 120 and the main pipe muffler 110, i.e., facilitates quick connection or disassembly between the end muffler 120 and the main pipe muffler 110.

[0083] like Figure 1As shown, in some embodiments, multiple dampers 13 are provided on the bottom side of the fabric processing cylinder 11. The dampers 13 are mainly used to reduce or eliminate vibrations generated during the operation of the fabric processing cylinder 11. During the operation of the fabric processing cylinder 11, the operation of mechanical components inside the cylinder, such as the drive motor 12 and transmission belt, will generate vibrations. If these vibrations are not controlled, they will affect the processing quality of the fabric and may even damage the equipment itself. By absorbing and dissipating energy, the dampers 13 can effectively reduce the amplitude of vibrations, improve the stability and reliability of the fabric processing cylinder 11, and ensure that the fabric processing cylinder 11 operates in a stable state, thereby improving production efficiency and product quality.

[0084] The silencer 100 also includes a first pipe silencer 130. The first pipe silencer 130 is connected to the main pipe silencer 110 via a knob. This connection method makes the first pipe silencer 130 and the main pipe silencer 110 form an organic whole. In addition, the knob connection can maintain good performance after multiple disassemblies and reconnections, effectively reducing the need to replace new connectors and lowering maintenance costs. At the same time, it also makes the assembly process of the first pipe silencer 130 and the main pipe silencer 110 simpler and faster, without the need for additional tools or complicated assembly steps.

[0085] On the other hand, the knob connection design allows the connection between the first pipe silencer 130 and the main pipe silencer 110 to effectively absorb the mechanical vibration and impact of the fabric processing equipment 10.

[0086] The first pipe silencer 130 comprises multiple components, each corresponding to and covering the outer surface of multiple dampers 13. This covering structure not only further reduces the noise generated by the dampers 13 during operation but also protects them from the influence of the external environment. For example, in the working environment of the fabric processing equipment 10, the covered first pipe silencer 130 can prevent dust, moisture, and other substances from corroding the dampers 13, extending their service life.

[0087] A sealing strip is installed at the connection point between the first pipe silencer 130 and the damper 13 to ensure a tight seal at the connection. Simultaneously, the sealing strip fills any tiny gaps at the connection, preventing sound waves from propagating through these gaps and thus improving the silencing effect. Furthermore, the sealing strip also acts as a buffer, reducing wear at the connection and improving the stability and durability of the entire silencer device 100.

[0088] It should be noted that the length and diameter of the first duct silencer 130 can vary to effectively silence noise in different frequency ranges. Furthermore, the resonant cavity and airflow guiding structure of the first duct silencer 130 can be flexibly configured according to the shape or structure of the damper 13. For example, the resonant cavity of the first duct silencer 130 can be designed with a structure positively correlated with the length of the damper 13 to absorb noise waves of specific frequencies.

[0089] The airflow guiding structure of the first duct silencer 130 can be flexibly designed with the shape of the inlet and outlet of the first duct silencer 130 to guide the airflow more smoothly, thereby effectively reducing noise over a wider frequency range.

[0090] The first pipe silencer 130 needs to be designed as an expansion cavity-type silencer structure with abrupt interface changes during processing, so as not to affect the vibration reduction system of the fabric treatment tube 11. In addition, the radius of the multiple expansion cavity-type silencers can be adjusted and fixed according to the size of the damper 13. Since the bottom of the damper 13 is relatively thin, a sealing strip (such as a rubber sealing strip) is used to seal it here to prevent noise leakage, improve the disassembly of the entire shell, and make the entire noise reduction system reusable.

[0091] It should be noted that the expansion cavity type silencing structure is a device used to reduce aerodynamic noise. It changes the airflow path by designing one or more expansion chambers, causing sound waves to be reflected and interfered when passing through these chambers, thereby achieving the purpose of noise reduction. The working principle of the expansion cavity type silencing structure includes the following aspects: (1) Sound wave reflection: When sound waves enter the expansion cavity, they will be reflected multiple times by the cavity wall, and some sound energy will be absorbed by the cavity wall, reducing the transmitted noise. (2) Sound wave interference: When sound waves of different path lengths meet in the expansion cavity, they will interfere. Some frequency sound waves cancel each other out due to their opposite phase, further reducing noise.

[0092] like Figures 1 to 4 As shown, in some embodiments, an elastic element 112 is provided on the top side of the fabric processing tube 11. The elastic element 112 may be a spring.

[0093] The silencer 100 also includes a second pipe silencer 140. The second pipe silencer 140 is connected to the main pipe silencer 110 via a knob. This connection method allows the second pipe silencer 140 and the main pipe silencer 110 to form an organic whole. Furthermore, the knob connection maintains good performance even after multiple disassemblies and reconnections, effectively reducing the need for replacing new connectors and lowering maintenance costs. Simultaneously, it simplifies and speeds up the assembly process between the second pipe silencer 140 and the main pipe silencer 110, requiring no additional tools or complex assembly steps.

[0094] On the other hand, the knob connection design allows the connection between the second pipe silencer 140 and the main pipe silencer 110 to effectively absorb the mechanical vibration and impact of the fabric processing equipment 10.

[0095] The second pipe silencer 140 is wrapped around the outer surface of the spring. On the one hand, the wrapped structure can effectively suppress the noise generated by the spring during operation. During the process of buffering and adapting to changes in size, the spring's own expansion and deformation may generate some noise. The second pipe silencer 140 can absorb and block this noise through the wrapping form, reducing the transmission of noise to the surrounding environment.

[0096] On the other hand, the encased structure also provides some protection for the spring. For example, it prevents external factors such as dust and moisture from corroding the spring and extends its service life. At the same time, in the event of accidental collisions or friction that the fabric processing equipment 10 may suffer, the encased second pipe silencing component 140 can also provide a certain degree of physical protection for the spring, ensuring that the spring can continue to perform its function in the fabric processing cylinder 11.

[0097] like Figure 1 As shown, an exemplary embodiment of the present invention provides a fabric processing device 10, which includes a fabric processing cylinder 11 and a noise reduction device 100 as described in any of the above embodiments.

[0098] In this example, the main duct silencer 110 and the end silencer 120 are used to reduce noise and absorb sound from the fabric processing cylinder 11 and the drive motor 12, respectively. Simultaneously, to address the noise generated by the fabric processing cylinder 11 at different frequencies during operation, a first duct silencer 130 is wrapped around the damper 13 on the fabric processing cylinder 11, and a second duct silencer 140 is wrapped around the elastic member 112. The end silencer 120 is a sound-absorbing structure based on an acoustic black hole model. This allows for control of the noise generated by the fabric processing equipment 10 at its source, effectively improving the user experience and enhancing the sound quality and comfort of the equipment. The aforementioned silencer device 100 has a simple structure and is reusable, making it applicable not only to components such as the fabric processing cylinder 11 but also to other applications.

[0099] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0100] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A noise reduction device applicable to fabric processing equipment, the fabric processing equipment comprising a fabric processing cylinder and a drive motor for driving the fabric processing cylinder, the drive motor being located at the rear side of the fabric processing cylinder, characterized in that, The noise reduction device includes: The main pipe silencer extends from the bottom to the opening of the fabric processing cylinder. The main pipe silencer is used to sleeve the fabric processing cylinder and wrap the drive motor. The main pipe silencer has a protruding end at the location of the drive motor. The main pipe silencer is used to reduce the noise of the fabric processing cylinder when it is running. An end silencer is provided, which is connected to the protruding end. The end silencer forms a silencer cavity, which is connected to the main pipe silencer. Multiple sound-absorbing rings are arranged at intervals along the axial direction of the silencer cavity inside the silencer cavity. Each sound-absorbing ring has a sound-absorbing port. The diameters of the sound-absorbing ports of two adjacent sound-absorbing rings are different, and the diameter of the sound-absorbing port of the sound-absorbing ring closer to the drive motor is the largest. The end-effector is configured to reduce and absorb noise during the operation of the drive motor.

2. The silencing device according to claim 1, characterized in that, The end silencer is a columnar structure, and the end silencer includes a connecting end and a silencer end; The connecting end and the protruding end are detachably connected; The silencing end is connected to the connecting end, and the silencing end adopts a knob-type telescopic structure to form a silencing structure with adjustable length.

3. The silencing device according to claim 2, characterized in that, The silencing end includes a circular tube and a plurality of sound-absorbing rings disposed within the circular tube and spaced apart. The interior of the circular tube is configured as the silencing cavity, and the plurality of sound-absorbing rings are spaced apart within the circular tube. Along the direction from the bottom of the fabric treatment cylinder to the opening, the diameter of the sound-absorbing openings of the plurality of sound-absorbing rings increases in a stepped manner.

4. The silencing device according to claim 3, characterized in that, The diameter of the sound-absorbing port on any of the sound-absorbing rings is negatively correlated with the distance from the sound-absorbing ring to the connection end.

5. The silencing device according to claim 4, characterized in that, Let R be the diameter of the end silencer, x be the distance from any of the sound-absorbing rings to the connection end, and L be the total length of the end silencer. Then, the diameter r of the sound-absorbing port on the sound-absorbing ring at distance x is the difference between the diameter R of the end silencer and the first product value. Wherein, the first product value is the product of the distance coefficient K and the distance x, and the distance coefficient K is the quotient of the diameter R of the end muffler and the total length L of the end muffler.

6. The silencing device according to claim 5, characterized in that, The total length L of the end silencer is in the range of 5mm ≤ L ≤ 220mm.

7. The silencing device according to any one of claims 2 to 6, characterized in that, The connecting end is threadedly connected to the protruding end.

8. The silencing device according to claim 1, characterized in that, Multiple dampers are provided on the bottom side of the fabric treatment cylinder; The silencing device also includes a first pipe silencing component; The first branch pipe silencer is connected to the main pipe silencer by a knob, and there are multiple first branch pipe silencers, with each of the multiple first branch pipe silencers corresponding to and covering the outer surface of the multiple dampers. A sealing strip is provided at the connection point between the first pipe silencer and the damper.

9. The silencing device according to claim 1, characterized in that, An elastic element is provided on the top side of the fabric treatment tube; The silencing device also includes a second pipe silencing component; The second pipe silencer is connected to the main pipe silencer by a knob, and the second pipe silencer covers the outer surface of the elastic member.

10. The silencing device according to claim 1, characterized in that, The end of the main pipe silencer that is furthest from the end silencer is used to connect to the fabric treatment tube via a snap fastener.

11. A fabric treatment device, characterized in that, The fabric processing equipment includes a fabric processing cylinder and a noise reduction device as described in any one of claims 1 to 10.

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