Sound absorbing panel structure for indoor building renovation

Abstract

The application discloses an indoor building reconstruction sound absorption board structure, and relates to the technical field of sound absorption boards, which comprises a front panel and a rear panel, a plurality of sound inlet holes are formed in the front panel, and a nested sound absorption piece is arranged between the front panel and the rear panel; when sound waves in a conference room, whether sound from a fixed direction or speech from people in different seats, enter the sound absorption board structure through the sound inlet holes in the front panel, they first enter a plurality of sound absorption reflection chambers formed by the nested sound absorption piece, and the sound waves are dissipated and absorbed by the sound absorption reflection chambers, so that the sound absorption effect is achieved; therefore, the sound absorption board structure can effectively cope with complex sound fields generated in different conference modes in the conference room, whether high frequency or low frequency, whether a directional sound source or a diffuse sound source, sound waves can be subjected to multiple reflections, shunting and attenuation in the sound absorption board, so that a clear and interference-free acoustic environment can be obtained in the conference room in any mode.

Description

Technical Field

[0001] This invention belongs to the field of sound-absorbing panel technology, specifically, it relates to a sound-absorbing panel structure for indoor building renovation. Background Technology

[0002] When optimizing the acoustic environment in indoor spaces such as conference rooms, sound-absorbing panels are installed on the wall surface as a key component to absorb sound wave energy and reduce noise interference, thereby improving speech clarity and meeting quality.

[0003] Currently available sound-absorbing panels mainly include planar, grooved, wave-shaped, and pyramidal shapes. Different shapes improve sound absorption by changing the sound wave reflection path and increasing the surface area. For example, grooved and wave-shaped panels increase the contact area between sound waves and the material, enhancing mid-to-high frequency sound absorption; pyramidal panels dissipate sound energy through multi-angle reflection, making them suitable for environments with strong echoes. However, these traditional sound-absorbing panels have significant limitations. Their single, fixed structure makes it difficult to adapt to the changing meeting modes in conference rooms. Specifically, in audio system playback mode, sound mainly comes continuously from a fixed direction (such as the location of the audio equipment); while in group discussions or free speaking modes, sound is randomly generated from different seating directions. This makes it impossible to ensure that existing sound-absorbing panels can provide a clear and interference-free acoustic environment in different meeting modes.

[0004] Among them, Chinese invention patent application publication number CN115075415A discloses a noise reduction device, including a sound-absorbing panel fixed to a wall, a sound-insulating panel vertically fixed to the side of the sound-absorbing panel away from the wall, an insertion hole horizontally opened on the sound-insulating panel, an energy-reducing module passing through the insertion hole, and a slidable connection between the energy-reducing module and the sound-insulating panel. This application has the effect of improving the comfort of meeting participants, reducing the transmission of noise in the meeting room, and reducing the impact of noise in the meeting room on meeting participants;

[0005] The aforementioned device reduces noise energy by installing a sound-insulating panel and a sliding energy-reducing module on the outside of the sound-absorbing panel, utilizing multiple reflections within the energy-reducing cavity. Although this design can reduce local noise propagation under certain conditions, its structure is still limited to fixed sound source treatment and cannot effectively cope with the complex situation of multi-directional sound sources in conference rooms. Therefore, in practical applications, it still cannot meet the comprehensive sound absorption requirements of different conference modes. Summary of the Invention

[0006] The purpose of this invention is to provide a sound-absorbing panel structure for indoor building renovation, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: a sound-absorbing panel structure for indoor building renovation, including a front panel and a rear panel, wherein the front panel has a plurality of sound inlet holes, and further including: a stacked sound-absorbing component located between the front panel and the rear panel, wherein the stacked sound-absorbing component forms a plurality of sound-absorbing and reflecting cavities between the front panel and the rear panel, and the sound inlet holes are connected to the sound-absorbing and reflecting cavities; a honeycomb sleeve is disposed on one side of the rear panel, wherein the honeycomb sleeve is interconnected with the sound-absorbing and reflecting cavities in the stacked sound-absorbing component, and the honeycomb sleeve is used to connect adjacent sound-absorbing and reflecting cavities; wherein, multiple flow-dividing layers are separated on the cylinder wall of the honeycomb sleeve.

[0008] Preferably, the nested sound-absorbing component comprises a continuous arrangement of multiple W-shaped sound-absorbing panels, with a W-shaped sound-absorbing panel II nested within the W-shaped sound-absorbing panels. The W-shaped sound-absorbing panel I includes a convex reflective portion and straight plates IV and first inclined plates II located on both sides of the convex reflective portion. Adjacent first inclined plates II are connected by straight plates V. The W-shaped sound-absorbing panel II includes symmetrical second inclined plates I and II, with one end of the second inclined plate I being in contact with the convex reflective portion.

[0009] Preferably, the convex reflective part includes a straight plate and a first inclined plate, a second straight plate, a third straight plate, and a fourth straight plate that are continuously formed on both sides of the first straight plate, wherein the fourth straight plate is connected to the second inclined plate.

[0010] Preferably, the sound-absorbing and reflecting cavity includes a first nested sound-absorbing layer formed between W-shaped sound-absorbing plate one and W-shaped sound-absorbing plate two, and two multi-reflection sound-absorbing layers formed between W-shaped sound-absorbing plate one and the inner wall of the front panel; it also includes a first dispersion layer formed between two second inclined plates two and the rear panel, and a first dispersion layer two formed between the second inclined plate one, the straight plate three, and the rear panel; the flow-dividing layer includes a flow-dividing channel one formed between the two first inclined plates two, the straight plate five, and the rear panel; the W-shaped sound-absorbing plate one and the W-shaped sound-absorbing plate two are respectively provided with a plurality of sound inlet grooves one and two, for making the multiple sound-absorbing and reflecting cavities interconnected.

[0011] Preferably, the nested sound-absorbing component comprises a plurality of consecutive W-shaped sound-absorbing panels three and a W-shaped sound-absorbing panel four nested within the W-shaped sound-absorbing panels three. The W-shaped sound-absorbing panel three includes a symmetrical third inclined plate one and a third inclined plate two connected to the third inclined plate one, and the third inclined plates two on two adjacent W-shaped sound-absorbing panels three are connected.

[0012] Preferably, the sound-absorbing and reflecting cavity includes a nested sound-absorbing layer two formed between W-shaped sound-absorbing plate three and W-shaped sound-absorbing plate four, a narrow groove layer formed between third inclined plate one and W-shaped sound-absorbing plate four, a second dispersion layer one formed between W-shaped sound-absorbing plate four, third inclined plate two, and rear panel, and a second dispersion layer two formed between symmetrical third inclined plate one and front panel; the flow-dividing layer includes flow-dividing channels two formed between two third inclined plates two and front panel; the W-shaped sound-absorbing plate three and W-shaped sound-absorbing plate four and three are respectively provided with sound inlet groove four and sound inlet groove three, which are used to make the multiple sound-absorbing and reflecting cavities and flow-dividing layers interconnected.

[0013] Preferably, the second nested sound-absorbing layer, the first second dispersion layer, and the second second second dispersion layer all face inwards from the honeycomb sleeve.

[0014] Preferably, the nested sound-absorbing component comprises a series of rectangular sound-absorbing boxes 1 and rectangular sound-absorbing boxes 2 nested within the rectangular sound-absorbing boxes 1. The rectangular sound-absorbing boxes 2 are connected to the four corners of the rectangular sound-absorbing boxes 1 by ribs at the four corners, forming a plurality of sound-absorbing and reflecting cavities.

[0015] Preferably, the sound-absorbing and reflecting cavity includes multiple third dispersion layers formed between rectangular sound-absorbing box one, rectangular sound-absorbing box two, and ribs, as well as a third dispersion layer two in the middle of rectangular sound-absorbing box two; the flow distribution layer includes a sandwich flow distribution channel between adjacent rectangular sound-absorbing boxes one; the rectangular sound-absorbing box one and the rectangular sound-absorbing box two are respectively provided with sound inlet slot five and sound inlet slot six, which are used to make the multiple sound-absorbing and reflecting cavities and flow distribution layers interconnected.

[0016] Preferably, the other side of the rear panel and both sides of the front panel are provided with fitting grooves, the fitting grooves correspond to the honeycomb sleeve, one end of the rear panel is provided with an installation strip and the other end is provided with an installation groove corresponding to the installation strip.

[0017] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0018] 1. The sound-absorbing panel structure used in this interior building renovation extends the sound wave propagation path through convex reflectors and multi-reflective sound-absorbing layers. The overlapping sound-absorbing layers further refine the cavity, effectively attenuating the sound waves of people speaking and those playing from speakers, solving the problem of uneven absorption of sound waves of different frequencies by traditional sound-absorbing panels. In addition, the diversion channel and honeycomb sleeve work together to guide sound waves from areas continuously interfered with by speakers to adjacent sound-absorbing panel units, avoiding the weakening of the sound absorption effect of a single sound-absorbing panel unit due to continuous sound wave impact, and adapting to the usage requirements of conference room audio playback mode. The sound inlet channel realizes the interconnection of each sound-absorbing cavity, forming an acoustic maze, which reflects and dissipates multiple diffuse sound sources in the multi-directional mode of group discussion mode multiple times, ensuring speech clarity.

[0019] 2. The sound-absorbing panel structure used in this interior building renovation utilizes the Helmholtz / slit resonance principle through narrow groove layers to accurately absorb specific frequency sound waves that are prone to interference in the conference room, thus compensating for the weakness of traditional porous or reflective sound-absorbing panels in absorbing resonant frequency sound waves. The symmetrical third inclined plate structure of the W-shaped sound-absorbing panel ensures that sound waves can obtain similar reflection and attenuation effects when incident from any direction, solving the problem of uneven absorption of sound sources from multiple directions in group discussion mode. The second diversion channel guides the sound waves to flow between adjacent sound-absorbing panels, balancing local sound pressure and avoiding the sound absorption saturation problem caused by directional continuous sound sources, while also widening the overall sound absorption frequency range.

[0020] 3. The sound-absorbing panel structure used in this interior building renovation features a multi-chamber structure formed by the separation of the first and second third dispersion layers through ribs. This structure can fully reflect and attenuate both diffuse and directional sound sources in the conference room, ensuring the stability of the acoustic environment under different conference modes. The interlayer distribution channel and honeycomb sleeve work together to achieve sound wave communication between adjacent sound-absorbing box units, balance the sound pressure in different areas of the conference room, and solve the problem of speech intelligibility differences caused by uneven sound field in traditional sound-absorbing panels.

[0021] 4. The sound-absorbing panel structure used in this interior building renovation features multi-level sound-absorbing chambers and interconnected structures. It can simultaneously and efficiently handle directional continuous sound sources in audio playback mode and multi-directional diffuse sound sources in group discussion mode, overcoming the limitations of traditional single-panel sound-absorbing panels. The nested design forms reflection chambers, resonant narrow slots, and dispersion layers, covering the mid-low to mid-high frequency sound wave bands, compensating for the insufficient absorption of specific frequency sound waves by traditional planar and slotted sound-absorbing panels. The coordinated design of honeycomb sleeves and distribution channels enables the flow and distribution of sound waves between adjacent sound-absorbing panel units, avoiding the attenuation of sound absorption effect in a single area due to continuous sound wave impact, and extending the service life of the sound-absorbing panels. All three nested structures are modular designs, which can be flexibly combined and installed according to the size of the conference room, solving the problems of high construction difficulty and poor adaptability of traditional sound-absorbing panel renovation.

[0022] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0023] In the attached diagram:

[0024] Figure 1 This is a three-dimensional structural diagram of a sound-absorbing panel structure for indoor building renovation proposed in this invention;

[0025] Figure 2 This is a schematic diagram of the structure of a W-shaped sound-absorbing panel II for indoor building renovation proposed in this invention;

[0026] Figure 3 This is a schematic diagram of the structure of a W-shaped sound-absorbing panel for indoor building renovation proposed in this invention;

[0027] Figure 4 This is a schematic diagram of the structure of W-shaped sound-absorbing panel three and W-shaped sound-absorbing panel four for indoor building renovation proposed in this invention;

[0028] Figure 5 This is a schematic diagram of the sound inlet groove four and the nested sound-absorbing layer two of the sound-absorbing panel structure for indoor building renovation proposed in this invention;

[0029] Figure 6 This is a schematic diagram of a rectangular sound-absorbing box 1 and a rectangular sound-absorbing box 2 for indoor building renovation proposed in this invention;

[0030] Figure 7 This is a schematic diagram of the structure of a W-shaped sound-absorbing panel and a convex reflective part for indoor building renovation proposed in this invention.

[0031] Figure 8 This is a schematic diagram of the structure of a sound-absorbing panel for indoor building renovation proposed in this invention, consisting of a multi-reflection sound-absorbing layer, a nested sound-absorbing layer one, a first dispersion layer one, and a second first dispersion layer;

[0032] Figure 9 This is a schematic diagram of the three narrow groove layers of a W-shaped sound-absorbing panel for indoor building renovation proposed in this invention;

[0033] Figure 10 This is a schematic diagram of the stacked sound-absorbing layer two, narrow groove layer two, second dispersion layer two, and second diversion channel two of the sound-absorbing panel structure for indoor building renovation proposed in this invention;

[0034] Figure 11 This is a schematic diagram of a rectangular sound-absorbing box 1 and a rectangular sound-absorbing box 2 for indoor building renovation proposed in this invention;

[0035] Figure 12 This is a schematic diagram of the sandwiched distribution channel, third dispersion layer one, third dispersion layer two, sound inlet groove five, and sound inlet groove six of a sound-absorbing panel structure for indoor building renovation proposed in this invention.

[0036] Figure 13 This is a schematic diagram of the sound inlet hole, bonding groove, front panel, and rear panel of a sound-absorbing panel structure for indoor building renovation proposed in this invention.

[0037] Figure 14 This is a schematic diagram of the installation strip and honeycomb sleeve of a sound-absorbing panel structure for indoor building renovation proposed in this invention.

[0038] In the diagram: 100. Stacked sound-absorbing components; 1. W-shaped sound-absorbing panel one; 10. Sound inlet groove one; 11. Convex reflector; 111. Straight plate one; 112. First inclined plate one; 113. Straight plate two; 114. Straight plate three; 12. Straight plate four; 13. First inclined plate two; 14. Straight plate five; 141. Diversion channel one; 15. W-shaped sound-absorbing panel two; 151. Second inclined plate one; 152. Second inclined plate two; 153. Sound inlet groove two; 16. Multi-reflection sound-absorbing layer; 17. Stacked sound-absorbing layer one; 19. First dispersion layer one; 191. First dispersion layer two;

[0039] 2. W-shaped sound-absorbing panel three; 201. Third inclined plate one; 202. Third inclined plate two; 21. W-shaped sound-absorbing panel four; 211. Sound inlet groove three; 212. Second dispersion layer one; 22. Sound inlet groove four; 23. Nested sound-absorbing layer two; 231. Narrow groove layer; 232. Second dispersion layer two; 233. Diversion channel two;

[0040] 3. Rectangular sound-absorbing box one; 31. Rectangular sound-absorbing box two; 32. Rib plate; 33. Interlayer distribution channel; 34. Third dispersion layer one; 35. Third dispersion layer two; 36. Sound inlet slot five; 37. Sound inlet slot six;

[0041] 4. Front panel; 41. Sound inlet; 42. Fitting groove;

[0042] 5. Rear panel; 51. Raised reflector; 52. Mounting strip; 53. Mounting slot;

[0043] 6. Honeycomb sleeve; 61. Cylinder wall. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0045] The following is in conjunction with the appendix Figure 1 - Appendix Figure 14 The technical solutions provided in each embodiment of the present invention will be described in detail.

[0046] Reference Figure 1 , Figure 13 , Figure 14A sound-absorbing panel structure for indoor building renovation includes a front panel 4 and a rear panel 5. The front panel 4 has a plurality of sound inlet holes 41. It also includes: a stacked sound-absorbing component 100 located between the front panel 4 and the rear panel 5, the stacked sound-absorbing component 100 forming multiple sound-absorbing and reflecting cavities between the front panel 4 and the rear panel 5, and the sound inlet holes 41 communicating with the sound-absorbing and reflecting cavities; a honeycomb sleeve 6 disposed on one side of the rear panel 5, the honeycomb sleeve 6 communicating with the sound-absorbing and reflecting cavities in the stacked sound-absorbing component 100, and the honeycomb sleeve 6 being used to connect adjacent sound-absorbing and reflecting cavities; wherein, multiple flow-dividing layers are separated on the cylinder wall 61 of the honeycomb sleeve 6.

[0047] Among them, the front panel 4 and the rear panel 5 constitute the main shell of the sound-absorbing panel structure. The front panel 4 faces the sound source, while the rear panel 5 provides structural support, installation and back sealing. The front panel 4 and the rear panel 5 can be made of materials such as perforated metal plate, fiberboard, wood board, plastic board or sponge board.

[0048] The sound inlet 41 is an opening on the front panel 4 used to guide external sound waves into the interior of the sound-absorbing panel; the nested sound-absorbing component 100 is an internal structure located between the front panel 4 and the rear panel 5. Its design purpose is to form a complex acoustic path through multiple nesting layers, thereby constructing multiple sound-absorbing and reflecting cavities inside the sound-absorbing panel. This structure achieves sound absorption through multiple reflections and energy dissipation of sound waves within the cavities; the nested sound-absorbing component 100 can be made of sound-absorbing materials such as polyester fiber cotton, polyurethane foam, or wood fiberboard.

[0049] The sound-absorbing and reflecting cavity is a closed or semi-closed space formed by the nested sound-absorbing components 100 between the front panel 4 and the rear panel 5. After the sound waves enter these cavities, they will be reflected multiple times between the cavity walls, and the energy will gradually attenuate, thereby achieving the sound absorption effect.

[0050] The honeycomb sleeve 6 is a component with a honeycomb structure, usually located on one side of the rear panel 5. Its internal channels are connected to the sound-absorbing and reflecting cavities formed by the stacked sound-absorbing components 100, and are used to promote sound wave flow and energy exchange between adjacent sound-absorbing and reflecting cavities, avoiding the disadvantage of weakened sound absorption effect when a single sound-absorbing panel is continuously interfered with by a sound source;

[0051] The diversion layer separates some cavities in the sound-absorbing and reflecting cavity by using adjacent honeycomb sleeves 6, connecting two adjacent sound-absorbing and reflecting cavities, further guiding and dispersing the sound waves entering the sound-absorbing panel, increasing the propagation path and energy dissipation of the sound waves, thereby improving the sound absorption effect.

[0052] The other side of the rear panel 5 and both sides of the front panel 4 are provided with fitting grooves 42, which correspond to the honeycomb sleeves 6. One end of the rear panel 5 is provided with an installation strip 52 and the other end is provided with an installation groove 53 corresponding to the installation strip 52. During installation and use, the front panel 4 and the rear panel 5 are connected, and the stacked sound-absorbing component 100 is clamped between the front panel 4 and the rear panel 5. The rear panel 5 is connected to the connector on the wall, so that the rear panel 5 can be installed on the wall. In the horizontal direction of installation, the honeycomb sleeve 6 protruding from one side of the rear panel 5 is inserted into the fitting groove 42 on the other side of the adjacent rear panel 5, which makes the adjacent rear panels 5 tightly connected. In the vertical direction of installation, the installation strip 52 is inserted into the installation groove 53 of the adjacent rear panel 5.

[0053] In one embodiment, refer to Figure 2 , Figure 3 , Figure 7 , Figure 8 The nested sound-absorbing component 100 includes multiple W-shaped sound-absorbing panels 1 continuously arranged, and a W-shaped sound-absorbing panel 2 15 is nested in the W-shaped sound-absorbing panel 1. The W-shaped sound-absorbing panel 1 includes a convex reflective part 11 and straight plates 4 12 and first inclined plates 2 13 located on both sides of the convex reflective part 11. Adjacent first inclined plates 2 13 are connected by straight plates 5 14. The W-shaped sound-absorbing panel 2 15 includes symmetrical second inclined plates 1 151 and second inclined plates 2 152. One end of the second inclined plate 1 151 is attached to the convex reflective part 11.

[0054] Among them, W-shaped sound-absorbing panel 1 is a sound-absorbing structural unit with a W-shaped cross-section. Its continuous composition can form a periodically changing sound-absorbing channel. This W-shaped structure can provide multiple reflective surfaces, which helps to reduce the multiple reflections and energy attenuation of sound waves. W-shaped sound-absorbing panel 2 15 is also a sound-absorbing structural unit with a W-shaped cross-section. Its characteristic is that it is nested inside W-shaped sound-absorbing panel 1. This nesting design aims to further increase the complexity of the internal sound-absorbing structure, creating more and smaller reflective chambers and slits, thereby widening the sound absorption frequency range, especially the absorption effect on mid-to-high frequency sound waves. Continuous composition means that multiple W-shaped sound-absorbing panels 1 are connected end to end or in other ways along the length direction to form a continuous sound-absorbing layer, ensuring the uniform distribution and continuity of the sound-absorbing structure throughout the entire sound-absorbing panel. The nested arrangement refers to the W-shaped sound-absorbing panel 15 being placed inside the W-shaped sound-absorbing panel 1, forming a specific gap and chamber between them. This nesting method can effectively utilize space, achieve a more complex acoustic structure within a limited thickness, and further rapidly consume sound waves using this acoustic structure. Moreover, this acoustic structure can also layer and consume noise in different frequency ranges, achieving a more efficient sound absorption effect.

[0055] The convex reflector 11 is one of the core structures of the W-shaped sound-absorbing panel 1. Its convex shape effectively scatters and reflects incident sound waves, preventing direct penetration and increasing the sound path. The convex reflector 11 includes a straight plate 111 and four straight plates 112, 113, 114, and 12 continuously formed on both sides of the straight plate 111. The straight plate 12 is connected to the first inclined plate 13. This design of the convex reflector 11 forms a complex geometry with multi-level refraction and reflection paths. When sound waves enter the sound-absorbing and reflecting chamber through the sound inlet 41 and encounter the convex reflector 11, they undergo multiple reflections with these plates at different angles and positions. This effectively prolongs the propagation path and residence time of the sound waves within the cavity, significantly increasing the probability of sound waves being absorbed by the sound-absorbing material and improving the sound absorption effect. The combination of the straight plate 12 and the first inclined plate 13 can form reflective surfaces and channels at different angles, guiding sound waves to undergo multiple reflections within the structure. The straight plate 14 is used to connect the adjacent first inclined plate 13, so that multiple W-shaped sound-absorbing panels 1 can be continuously combined together to form an integral sound-absorbing structure.

[0056] The symmetrical second inclined plate 151 and the second inclined plate 152 form the W shape of the W-shaped sound-absorbing plate 15. The symmetrical design helps the sound waves to be evenly distributed and reflected inside the structure. One end of the second inclined plate 151 is in contact with the convex reflective part 11. This contact relationship is the key to the nested design. Through the contact or close fit between the second inclined plate 151 and the convex reflective part 11, a specific cavity can be formed between the two. These cavities play an important role in absorbing sound waves in a specific frequency range.

[0057] By employing the above technical solution, the nested combination of W-shaped sound-absorbing panel 1 and W-shaped sound-absorbing panel 2 15 significantly optimizes the acoustic path within the sound-absorbing panel structure. The convex reflective part 11, straight plate 4 12, first inclined plate 2 13, and straight plate 5 14 of W-shaped sound-absorbing panel 1 together construct a multi-layered, multi-angle reflective surface, allowing sound waves entering the sound-absorbing panel to undergo multiple reflections and scatterings, effectively extending the sound path and increasing sound energy loss. Based on this, the W-shaped sound-absorbing panel 15 is nested inside the W-shaped sound-absorbing panel 1. The symmetrical second inclined plate 151 and the convex reflective part 11 are fitted together, further refining the structure of the sound-absorbing and reflecting chamber, forming more tiny resonant cavities and slits. This refined chamber design can not only effectively absorb sound waves in a wider frequency range, especially the absorption effect of mid-to-high frequency sound waves, but also improve the efficiency of sound energy conversion into heat energy by increasing the propagation path and reflection number of sound waves inside the structure, thereby enhancing the overall sound absorption performance. In addition, this modular W-shaped panel nesting structure also facilitates the manufacturing and assembly of the sound-absorbing panel, which helps to achieve efficient production.

[0058] Reference Figure 7 , Figure 8 The sound-absorbing and reflecting cavity includes a nested sound-absorbing layer 17 formed between W-shaped sound-absorbing plate 1 and W-shaped sound-absorbing plate 2 15, and two multi-reflection sound-absorbing layers 16 formed between W-shaped sound-absorbing plate 1 and the inner wall of the front panel 4; it also includes a first dispersion layer 19 formed between two second inclined plates 2 152 and the rear panel 5, a second inclined plate 151, a straight plate 3 114, and a first dispersion layer 2 191 formed between the rear panel 5, and a flow channel 141 formed between two first inclined plates 2 13, a straight plate 5 14, and the rear panel 5; the flow channel 141 is located between two honeycomb sleeves 6; W-shaped sound-absorbing plate 1 and W-shaped sound-absorbing plate 2 15 are respectively provided with a plurality of sound inlet grooves 10 and 153 for interconnecting the multiple sound-absorbing and reflecting cavities;

[0059] The arrangement of W-type sound-absorbing panels 1 and 15 allows them to effectively work in conjunction with the honeycomb sleeve 6 as the main sound-absorbing structural units. The honeycomb sleeve 6 serves as a guiding and connecting channel for sound waves from adjacent sound-absorbing panel units, primarily achieving acoustic coupling between them. It facilitates the propagation, reflection, dispersion, and absorption of sound waves across multiple sound-absorbing panel units, thereby optimizing the overall sound absorption performance. When a sound-absorbing panel unit in a certain area is subjected to continuous sound wave interference (e.g., in audio system playback mode, where sound mainly comes from a fixed direction), the honeycomb sleeve 6 structure guides the sound waves received by that unit to adjacent sound-absorbing panel units for absorption and dissipation, reducing the sound absorption pressure on the unit in that area. This, combined with the honeycomb sleeve 6's connection of adjacent sound-absorbing panel units and its synergistic effect with the sound-absorbing reflection cavity, results in a more effective sound absorption structure.

[0060] The nested sound-absorbing layer 17 is a specific space formed between the W-shaped sound-absorbing panel 1 and the W-shaped sound-absorbing panel 15. Its main function is to provide an area for multiple sound wave reflections and energy attenuation. Because the W-shaped sound-absorbing panel 15 is nested inside the W-shaped sound-absorbing panel 1, the gap between them forms a narrow, tortuous channel. Sound waves entering this space undergo multiple reflections, extending the sound path and increasing the contact time with the sound-absorbing material, thereby improving the absorption efficiency of low-frequency sound waves. This layer can be filled with porous sound-absorbing materials, such as polyester fiber or sponge, to further enhance the sound absorption effect.

[0061] The multi-reflection sound-absorbing layer 16 is a cavity formed between the outer surface of the W-shaped sound-absorbing panel 1 and the inner wall of the front panel 4. Due to the convex reflective part 11 and the first inclined plate 13 structure of the W-shaped sound-absorbing panel 1, multiple irregular cavities with different depths are formed between it and the flat inner wall of the front panel 4. These cavities can reflect and scatter sound waves of different frequencies at multiple angles, effectively disrupting the propagation direction of sound waves and reducing sound energy concentration, thereby achieving a wider frequency band sound absorption effect. This enables a clear acoustic environment to be obtained in different conference modes.

[0062] The first dispersion layer 19 is a cavity formed between the second inclined plate 152 of the W-shaped sound-absorbing panel 15 and the rear panel 5. This cavity is mainly used to further disperse and absorb sound waves that penetrate the nested sound-absorbing layer 17. Due to the tilt angle of the second inclined plate 152, this layer forms a trapezoidal cavity, which can reflect and disperse sound waves again, preventing sound energy from being directly transmitted to the rear panel 5, thereby reducing the transmission of sound waves. At the same time, in the first dispersion layer 19, multiple protruding reflective blocks 51 are equally spaced on the rear panel 5 to further dissipate the energy of sound waves.

[0063] The first dispersion layer 191 is a cavity formed between the second inclined plate 151, the straight plate 114 and the rear panel 5. Similar to the first dispersion layer 19, this layer is also designed to provide additional space for sound wave dispersion and absorption. The straight plate 114, as part of the convex reflector 11, together with the second inclined plate 151 and the rear panel 5, forms a complex acoustic path, which further extends the propagation distance of the sound waves and increases the chance of sound waves attenuating inside the structure, especially for the dispersion effect of mid-to-high frequency sound waves.

[0064] The first diversion channel 141 is the channel formed between the first inclined plate 2 13, the straight plate 5 14 and the rear panel 5. These diversion channels are part of the diversion layer on the cylinder wall 61 of the honeycomb sleeve 6. Their function is to guide the sound waves to flow and redistribute between different sound-absorbing and reflecting chambers. Through these diversion channels, the sound waves can enter from one chamber to another chamber, or be guided into another sound-absorbing panel unit through the honeycomb sleeve 6, thereby achieving a more uniform distribution and more complete absorption of sound energy, and reducing the sound absorption pressure of a single sound-absorbing panel unit.

[0065] Sound inlet slot 10 is formed on W-shaped sound-absorbing panel 1, and sound inlet slot 2 153 is formed on W-shaped sound-absorbing panel 2 15. These sound inlet slots are key channels for sound waves to flow between different sound-absorbing chambers. They allow sound waves to freely travel between the nested sound-absorbing layer 17, the multi-reflection sound-absorbing layer 16, the first dispersion layer 19, the second first dispersion layer 191, and the distribution channel 141, forming a complex acoustic labyrinth. This interconnected design greatly increases the propagation path length and reflection number of sound waves within the structure, ensuring that sound energy can be fully captured and attenuated, thereby improving the sound absorption performance of the sound-absorbing panel over a wide frequency range. The size, shape, and distribution density of the sound inlet slots can be adjusted according to acoustic design requirements to optimize sound wave flow efficiency and sound absorption effect.

[0066] Through the above technical solution, the nested sound-absorbing layer 17 and the multi-reflection sound-absorbing layer 16 synergistically construct a multi-layered, multi-path sound wave reflection and absorption space, effectively extending the propagation path of sound waves within the structure and increasing the contact time between sound waves and the sound-absorbing material, thereby significantly improving the absorption capacity of the sound-absorbing panel for mid-to-low frequency sound waves. Furthermore, the first dispersion layer 19 and the second first dispersion layer 191 further enhance the dispersion and attenuation effect of sound waves deep within the structure, effectively reducing sound wave transmission. The arrangement of the diversion channel 141 allows sound waves to be effectively guided and redistributed between different sound-absorbing and reflecting chambers. Combined with the sound inlet grooves 10 and 153 on the W-shaped sound-absorbing panel 1 and the second W-shaped sound-absorbing panel 15, acoustic communication between chambers is ensured, forming a highly efficient acoustic labyrinth. This allows sound energy to be more fully captured and attenuated, thereby greatly expanding the effective sound absorption frequency range of the sound-absorbing panel while maintaining structural compactness, and improving the overall sound absorption performance and sound insulation effect.

[0067] In another embodiment, refer to Figure 4 , Figure 5 , Figure 9 , Figure 10 The nested sound-absorbing component 100 includes a series of W-shaped sound-absorbing panels 2 and W-shaped sound-absorbing panels 21 nested in the W-shaped sound-absorbing panels 2. The W-shaped sound-absorbing panels 2 and W-shaped sound-absorbing panels 21 are arranged opposite to each other. The W-shaped sound-absorbing panel 2 includes a symmetrical third inclined plate 201 and a third inclined plate 202 connected to the third inclined plate 201. The third inclined plates 202 on two adjacent W-shaped sound-absorbing panels 2 are connected.

[0068] Specifically, the W-shaped sound-absorbing panel 32, as the main component of the nested sound-absorbing element 100, effectively guides sound waves to undergo multiple reflections through its W-shaped structure. It forms multiple independent or interconnected sound-absorbing cavities with the front panel 4 and rear panel 5. The arrangement of multiple consecutive W-shaped sound-absorbing panels 32 ensures the continuity and integrity of the sound-absorbing panel structure along its length, providing a stable physical boundary for sound wave propagation and attenuation. The W-shaped sound-absorbing panel 421, nested within the W-shaped sound-absorbing panel 32, further subdivides the sound-absorbing cavities formed by the W-shaped sound-absorbing panel 32, increasing the number of sound wave reflections and the path length, thereby improving the sound absorption effect. This nested design creates a more complex acoustic labyrinth within a limited space, helping to broaden the range of sound absorption frequencies. The third inclined plate 201 is a key part of the basic geometry of the W-shaped sound-absorbing plate 2. Its symmetry ensures that sound waves can achieve similar reflection and attenuation effects when entering from different directions. The design of the third inclined plate 201 makes the sound waves diffusely reflect after hitting the plate surface, reducing the concentrated reflection of sound energy and facilitating energy dissipation.

[0069] The third inclined plate 202 on two adjacent W-shaped sound-absorbing panels 2 is connected. This connection method ensures that multiple consecutive W-shaped sound-absorbing panels 2 form a tight and continuous structure, making the entire stacked sound-absorbing component 100 a unified whole. Through the connection of the third inclined plate 202, sound waves can be effectively transmitted and exchanged between adjacent W-shaped sound-absorbing panels 2, further enhancing the sound-absorbing panel structure's ability to capture and dissipate sound energy, while also improving the mechanical stability of the overall structure.

[0070] Through the above technical solution, the nested sound-absorbing component 100 is specifically designed to consist of multiple consecutive W-shaped sound-absorbing panels 2 and nested W-shaped sound-absorbing panels 21. Each W-shaped sound-absorbing panel 2 is composed of symmetrical third inclined plates 201 and 202, and adjacent W-shaped sound-absorbing panels 2 are connected by the third inclined plates 202. This ingenious W-shaped nested structure creates a highly complex and multi-layered sound-absorbing and reflecting chamber between the front panel 4 and the rear panel 5. Sound waves pass through the sound-absorbing chamber... After entering through hole 41, the sound waves undergo repeated reflection, refraction, and diffraction on multiple inclined surfaces and cavities formed by W-shaped sound-absorbing plate 3 2 and W-shaped sound-absorbing plate 4 21. This greatly increases the propagation path of the sound waves and their residence time within the cavities, thereby promoting the conversion of sound energy into heat energy and significantly improving sound absorption efficiency. In particular, the nested arrangement of W-shaped sound-absorbing plate 4 21 further refines the cavity structure, enabling the sound-absorbing plates to effectively absorb sound waves across a wider frequency range, achieving excellent broadband sound absorption effects.

[0071] Reference Figure 9 , Figure 10The sound-absorbing and reflecting cavity includes a nested sound-absorbing layer 23 formed between W-shaped sound-absorbing plate 21 and W-shaped sound-absorbing plate 22, a narrow groove layer 231 formed between the third inclined plate 201 and W-shaped sound-absorbing plate 21, a second dispersion layer 212 formed between W-shaped sound-absorbing plate 21, the third inclined plate 202, and the rear panel 5, a second dispersion layer 232 formed between the symmetrical third inclined plate 201 and the front panel 4, and a flow channel 233 formed between the two third inclined plates 202 and the front panel 4; the flow channel 233 is located between the two honeycomb sleeves 6; the W-shaped sound-absorbing plate 21 and W-shaped sound-absorbing plate 22 and W-shaped sound-absorbing plate 21 are respectively provided with sound inlet groove 22 and sound inlet groove 211 to make the multiple sound-absorbing and reflecting cavities and flow channels interconnected;

[0072] Specifically, the nested sound-absorbing layer 23 is a cavity formed between the W-shaped sound-absorbing panel 23 and the W-shaped sound-absorbing panel 21 nested inside it. This nested structure can provide multiple reflective surfaces, so that the incoming sound waves undergo multiple reflections and refractions inside, thereby extending the sound path and increasing the chance of sound energy dissipation;

[0073] The narrow slot layer 231 is a narrow cavity formed between the third inclined plate 201 and the W-shaped sound-absorbing plate 21. The narrow slot layer 231 mainly uses the Helmholtz resonance principle or the slit resonance principle to absorb sound waves. When the sound wave frequency matches the inherent resonant frequency of the narrow slot layer 231, the sound wave energy will be efficiently absorbed here.

[0074] The second dispersion layer 212 is a cavity formed between the W-shaped sound-absorbing plate 21, the third inclined plate 202, and the rear panel 5. The second dispersion layer 232 is a cavity formed between the symmetrical third inclined plate 201 and the front panel 4. These two dispersion layers aim to disperse the incoming sound waves in a disordered manner through irregular geometric shapes and varied acoustic paths, avoiding regular reflections of sound waves and the formation of standing waves. The multiple irregular reflections and mutual interference of sound waves inside the dispersion layers can effectively dissipate sound energy and improve sound absorption efficiency, especially for mid-to-high frequency sound waves, which have good dispersion and absorption effects.

[0075] The second diversion channel 233 is a channel formed between the two third inclined plates 202 and the front panel 4, and is separated by the cylinder walls 61 of the two adjacent honeycomb sleeves 6. As a specific implementation of the diversion layer, its function is to guide the flow path of sound waves in the sound-absorbing panel, ensuring that the sound waves can enter different sound-absorbing and reflecting chambers evenly and effectively. The design of the second diversion channel 233 can optimize the distribution of sound waves in the sound-absorbing structure, avoid the situation where sound waves accumulate in some areas while other areas have insufficient sound absorption, thereby improving the overall sound absorption performance.

[0076] Sound inlet slot 4 22 is formed on W-shaped sound-absorbing panel 3 2, and sound inlet slot 3 211 is formed on W-shaped sound-absorbing panel 4 21. These sound inlet slots are channels for sound waves to enter and flow between different sound-absorbing and reflecting chambers and between the distribution layers. They allow sound waves to travel freely between the chambers, extend the sound path, increase the contact time between the sound waves and the sound-absorbing material, thereby maximizing the dissipation of sound energy.

[0077] When a sound-absorbing panel unit in a certain area is subjected to continuous sound wave interference (e.g., in the playback mode of an audio system, the sound mainly comes from a fixed direction), the sound waves received by the sound-absorbing panel unit are guided to the adjacent sound-absorbing panel unit for absorption and dissipation through the honeycomb sleeve 6 structure, reducing the sound absorption pressure of the sound-absorbing panel unit in that area. In this way, the honeycomb sleeve 6 connects the adjacent sound-absorbing panel units and works in coordination with the sound absorption reflection cavity to achieve a better sound absorption structure.

[0078] Through the above technical solution, the sound-absorbing panel structure can provide various types and shapes of sound-absorbing and reflecting chambers, including a nested sound-absorbing layer 23, a narrow groove layer 231, a second dispersion layer 212, and a second dispersion layer 232. The design of these chambers allows sound waves to undergo multiple reflections, resonances, and dispersions after entering the sound-absorbing panel, thereby achieving efficient sound energy dissipation over a wider frequency range. In particular, the narrow groove layer 231 effectively absorbs high-frequency sound waves, while the dispersion layers help break the regular reflection of sound waves, improving sound absorption efficiency. Simultaneously, the arrangement of the second flow channel 233 ensures smooth flow and effective distribution of sound waves between different sound-absorbing and reflecting chambers and flow channels, avoiding local accumulation or ineffective reflection of sound energy, significantly improving overall sound absorption performance and acoustic effects.

[0079] The second sound-absorbing layer 23, the first second dispersion layer 212, and the second second dispersion layer 232 all face inwards towards the honeycomb sleeve 6. This means that the opening direction of the specific acoustic chambers or channels formed inside these sound-absorbing structures is designed to point towards the honeycomb sleeve 6. This means that the main sound wave outlet or guiding direction of these layers points towards the honeycomb sleeve 6, which ensures that the sound waves between adjacent sound-absorbing panel units can communicate quickly, thereby achieving the effect of quickly dissipating sound wave energy.

[0080] In another implementation, refer to Figure 6 , Figure 11 , Figure 12 The nested sound-absorbing component 100 includes a series of rectangular sound-absorbing boxes 3 and a rectangular sound-absorbing box 31 nested inside the rectangular sound-absorbing box 3. The rectangular sound-absorbing box 31 is connected to the four corners of the rectangular sound-absorbing box 3 by ribs 32 at the four corners, and forms a number of sound-absorbing and reflecting cavities.

[0081] The rectangular sound-absorbing box 3 serves as the external frame in the sound-absorbing panel structure. It is typically a hollow or rectangular structure with open sides, and its main function is to provide support and define the space for the internal sound-absorbing components. By arranging multiple rectangular sound-absorbing boxes 3 consecutively, a modular sound-absorbing unit array can be formed, which is convenient for combination and installation according to actual needs, thereby covering sound-absorbing areas of different sizes.

[0082] Rectangular sound-absorbing box 2 (31) serves as an internal sound-absorbing unit, nested inside rectangular sound-absorbing box 1 (3). This nested design creates a multi-layered structure within the sound-absorbing panel, increasing the propagation path and reflection frequency of sound waves within the sound-absorbing material, thus improving sound absorption. To ensure stable positioning of rectangular sound-absorbing box 2 (31) within rectangular sound-absorbing box 1 (3) and further optimize acoustic performance, ribs 32 are provided at the four corners of rectangular sound-absorbing box 2 (31) and connected to the four corners of rectangular sound-absorbing box 1 (3). The ribs 32 are key structural components connecting the two rectangular sound-absorbing boxes; they not only provide necessary structural support to prevent displacement or vibration of rectangular sound-absorbing box 2 (31) within the sound-absorbing panel, but also create additional reflective surfaces or narrow channels at the connection points.

[0083] Through the combination of the rectangular sound-absorbing box 3, the rectangular sound-absorbing box 31 and the rib 32, several sound-absorbing and reflecting cavities are formed between the front panel 4 and the rear panel 5. These cavities are the core functional areas of the sound-absorbing panel structure. After the sound waves enter these cavities through the sound inlet 41, they will be reflected and scattered multiple times between the inner wall of the cavity, the rectangular sound-absorbing box 3, the rectangular sound-absorbing box 31 and the rib 32, thereby consuming sound energy and achieving the purpose of sound absorption.

[0084] By employing multiple consecutive rectangular sound-absorbing boxes 3 as the external frame, and nesting rectangular sound-absorbing boxes 31 inside, and connecting them at the four corners using ribs 32, a structurally stable and high-performance sound-absorbing reflective chamber construction method is provided. This modular rectangular sound-absorbing box design makes the formation of the sound-absorbing reflective chamber more regular and controllable, avoiding the manufacturing and installation difficulties that may arise from traditional complex structures. The ribs 32 not only effectively fix the position of the rectangular sound-absorbing boxes 31, enhancing the overall structural stability, but also cleverly create additional reflective surfaces and acoustic paths inside the chamber, increasing the number of sound wave reflections and the residence time within the chamber, thereby significantly improving sound absorption efficiency, especially in the mid-to-low frequency range. Furthermore, this structure facilitates standardized production and assembly, reducing the construction difficulty and cost of interior building renovations, while ensuring the consistent performance of the sound-absorbing panel structure during long-term use.

[0085] The sound-absorbing and reflecting cavity includes multiple third dispersion layers 34 formed between rectangular sound-absorbing box 3, rectangular sound-absorbing box 31, and rib 32, as well as a third dispersion layer 35 in the middle of rectangular sound-absorbing box 31; the sound-absorbing and reflecting cavity also includes a sandwiched flow channel 33 disposed between adjacent rectangular sound-absorbing boxes 3; the flow channel 33 is a sandwiched flow channel 63 located between the cylinder walls 61 of two honeycomb sleeves 6; the rectangular sound-absorbing box 3 and the rectangular sound-absorbing box 31 are respectively provided with sound inlet slot 5 36 and sound inlet slot 6 37 to allow the multiple sound-absorbing and reflecting cavities and flow channels to communicate with each other;

[0086] Among them, the third dispersion layer 34 is a specific space formed between the rectangular sound-absorbing box 3, the rectangular sound-absorbing box 31 and the rib 32. Its function is to further disperse and reflect the incoming sound waves. By forming multiple such dispersion layers, the propagation path length and reflection times of the sound waves in the cavity can be increased, thereby improving the sound absorption efficiency.

[0087] The third dispersion layer 2 35 is a sound wave dispersion structure located in the central region inside the rectangular sound-absorbing box 2 31. Its purpose is to provide space for sound wave dispersion and reflection even inside the innermost sound-absorbing box, preventing sound waves from directly penetrating or attenuating on a single path, thereby further enhancing the sound absorption effect. The third dispersion layer 2 35 can also be formed by setting partitions, porous materials, or specific geometric structures inside the rectangular sound-absorbing box 2 31. For example, one or more partitions that are not completely fitted to the box wall can be set in the central region of the rectangular sound-absorbing box 2 31 to form multiple interconnected small chambers, thereby achieving multiple reflections and dispersion of sound waves.

[0088] The interlayer distribution channel 33 is a channel set between adjacent rectangular sound-absorbing boxes 3. Its function is to guide the sound waves to flow and communicate between different sound-absorbing and reflecting cavities, ensuring that the sound waves can enter evenly and be processed by each sound-absorbing cavity, avoiding excessively high local sound pressure or uneven sound absorption.

[0089] Sound inlet slot 5 (36) and sound inlet slot 6 (37) are openings respectively formed on rectangular sound-absorbing box 1 (3) and rectangular sound-absorbing box 2 (31). Their function is to serve as channels for sound waves to enter and exit the various sound-absorbing and reflecting cavities and the distribution layer, ensuring that sound waves can flow freely within the entire sound-absorbing structure, realizing acoustic coupling between different chambers, thereby improving the overall sound absorption performance.

[0090] By introducing multiple third dispersion layers 34 and 35, the sound waves can be more effectively dispersed and reflected multiple times after entering the sound-absorbing structure. This significantly increases the propagation path and energy loss of the sound waves within the cavity, thereby improving sound absorption efficiency, especially over a wide frequency range. Simultaneously, the interlayer distribution channel 33 optimizes the flow path of sound waves between adjacent sound-absorbing and reflecting cavity units, ensuring that sound waves are evenly distributed and fully enter each sound-absorbing cavity. Combined with the sound inlet slots 36 and 37 on the rectangular sound-absorbing box 3 and 31, effective interconnection between the multiple sound-absorbing and reflecting cavities and the distribution layers is achieved, constructing a more complex and efficient acoustic network. This further enhances the sound wave attenuation effect, solving the problems of insufficient sound wave propagation path optimization and limited cavity interconnection. This allows the sound-absorbing panel structure to provide superior sound absorption performance, especially in multi-mode conference modes.

[0091] When sound waves in the conference room, whether from a fixed direction or from people speaking in different seats, enter the sound-absorbing panel structure through the sound inlet 41 on the front panel 4, they first enter the multiple sound-absorbing and reflecting chambers formed by the stacked sound-absorbing components 100. The sound-absorbing and reflecting chambers dissipate and absorb the sound wave energy, achieving the sound absorption effect. Therefore, this sound-absorbing panel structure can effectively cope with the complex sound fields generated in different conference modes in the conference room. Whether it is high frequency or low frequency, whether it is a directional sound source or a diffuse sound source, the sound waves can undergo multiple reflections, diversions and attenuations inside the sound-absorbing panel, thereby ensuring that the conference room can obtain a clear and interference-free acoustic environment in any mode.

[0092] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A sound-absorbing panel structure for indoor building renovation, comprising a front panel (4) and a rear panel (5), wherein the front panel (4) is provided with a plurality of sound inlet holes (41), characterized in that, Also includes: A nested sound-absorbing component (100) is located between the front panel (4) and the rear panel (5). The nested sound-absorbing component (100) forms multiple sound-absorbing and reflecting cavities between the front panel (4) and the rear panel (5). The sound inlet (41) is connected to the sound-absorbing and reflecting cavities. A honeycomb sleeve (6) is disposed on one side of the rear panel (5). The honeycomb sleeve (6) communicates with the sound-absorbing and reflecting cavity in the stacked sound-absorbing component (100), and the honeycomb sleeve (6) is used to connect adjacent sound-absorbing and reflecting cavities. The sound-absorbing and reflecting cavity is separated into multiple flow-dividing layers by the cylinder wall (61) of the honeycomb sleeve (6). The nested sound-absorbing component (100) includes a plurality of W-shaped sound-absorbing panels (1) in succession, and a W-shaped sound-absorbing panel (15) is nested in the W-shaped sound-absorbing panel (1). The W-shaped sound-absorbing panel (1) includes a convex reflective part (11) and straight plates (12) and first inclined plates (13) located on both sides of the convex reflective part (11). Adjacent first inclined plates (13) are connected by straight plates (14). The W-shaped sound-absorbing panel (15) includes a symmetrical second inclined plate (151) and a second inclined plate (152). One end of the second inclined plate (151) is in contact with the convex reflective part (11). Alternatively, the nested sound-absorbing component (100) may include a series of W-shaped sound-absorbing panels three (2) and W-shaped sound-absorbing panels four (21) nested in the W-shaped sound-absorbing panels three (2). The W-shaped sound-absorbing panel three (2) may include a symmetrical third inclined plate one (201) and a third inclined plate two (202) connected to the third inclined plate one (201). The third inclined plates two (202) on two adjacent W-shaped sound-absorbing panels three (2) may be connected. Alternatively, the nested sound-absorbing component (100) may include a series of rectangular sound-absorbing boxes one (3) and a rectangular sound-absorbing box two (31) nested within the rectangular sound-absorbing box one (3). The rectangular sound-absorbing box two (31) is connected to the four corners of the rectangular sound-absorbing box one (3) by setting ribs (32) at the four corners, and forms a number of sound-absorbing and reflecting cavities.

2. The sound-absorbing panel structure for indoor building renovation according to claim 1, characterized in that, The convex reflective part (11) includes a straight plate (111) and a first inclined plate (112), a straight plate (113), a straight plate (114) and a straight plate (12) that are continuously formed on both sides of the straight plate (111). The straight plate (12) is connected to the first inclined plate (13).

3. The sound-absorbing panel structure for indoor building renovation according to claim 2, characterized in that, The sound-absorbing and reflecting cavity includes a nested sound-absorbing layer 1 (17) formed between W-shaped sound-absorbing plate 1 (1) and W-shaped sound-absorbing plate 2 (15), and two multi-reflection sound-absorbing layers (16) formed between W-shaped sound-absorbing plate 1 (1) and the inner wall of the front panel (4). The sound-absorbing and reflecting cavity also includes a first dispersion layer (19) formed between the two second inclined plates (152) and the rear panel (5), a first dispersion layer (191) formed between the second inclined plate (151), the straight plate (114), and the rear panel (5), and a flow channel (141) formed between the two first inclined plates (13), the straight plate (14), and the rear panel (5). The diversion layer is a diversion channel (141) located between two honeycomb sleeves (6). The W-shaped sound-absorbing plate one (1) and the W-shaped sound-absorbing plate two (15) are respectively provided with a number of sound inlet slots one (10) and two sound inlet slots two (153) to enable the multiple sound-absorbing and reflecting cavities to communicate with each other.

4. The sound-absorbing panel structure for indoor building renovation according to claim 1, characterized in that, The sound-absorbing and reflecting cavity includes a nested sound-absorbing layer two (23) formed between W-shaped sound-absorbing plate three (2) and W-shaped sound-absorbing plate four (21), a narrow groove layer (231) formed between third inclined plate one (201) and W-shaped sound-absorbing plate four (21), a second dispersion layer one (212) formed between W-shaped sound-absorbing plate four (21) and third inclined plate two (202) and rear panel (5), a second dispersion layer two (232) formed between symmetrical third inclined plate one (201) and front panel (4), and a flow channel two (233) formed between two third inclined plates two (202) and front panel (4); The diversion layer is diversion channel two (233) located between two honeycomb sleeves (6); The W-shaped sound-absorbing plate three (2) and the W-shaped sound-absorbing plate four (21) are respectively provided with sound inlet groove four (22) and sound inlet groove three (211) to enable the multiple sound-absorbing reflection cavities and the flow distribution layer to communicate with each other.

5. The sound-absorbing panel structure for indoor building renovation according to claim 4, characterized in that, The nested sound-absorbing layer 2 (23), the second dispersion layer 1 (212), and the second dispersion layer 2 (232) all face inwards towards the honeycomb sleeve (6).

6. The sound-absorbing panel structure for indoor building renovation according to claim 1, characterized in that, The sound-absorbing and reflecting cavity includes multiple third dispersion layers (34) formed between rectangular sound-absorbing box one (3), rectangular sound-absorbing box two (31) and rib plate (32), and a third dispersion layer two (35) in the middle of rectangular sound-absorbing box two (31); The sound-absorbing and reflecting cavity also includes a sandwich channel (33) disposed between adjacent rectangular sound-absorbing boxes (3); The diversion layer is an interlayer diversion channel (33) located between the cylinder walls (61) of the two honeycomb sleeves (6). The rectangular sound-absorbing box one (3) and the rectangular sound-absorbing box two (31) are respectively provided with sound inlet slot five (36) and sound inlet slot six (37) to enable the multiple sound-absorbing reflection cavities and the flow distribution layer to communicate with each other.

7. A sound-absorbing panel structure for indoor building renovation according to any one of claims 3, 5, or 6, characterized in that, The other side of the rear panel (5) and both sides of the front panel (4) are provided with fitting grooves (42), which correspond to the honeycomb sleeve (6). One end of the rear panel (5) is provided with an installation strip (52) and the other end is provided with an installation groove (53) corresponding to the installation strip (52).

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