Foamed ceramic sound absorption device

Abstract

The utility model relates to the technical field of sound absorption plates, and aims to solve the problems of poor stability, low sound absorption strength and short service life of the conventional foamed ceramic plate. The utility model provides a foamed ceramic sound absorption device which comprises a keel, a back plate and a face plate, and the back plate and the face plate are oppositely arranged on the two sides of the keel. The device further comprises a first foamed ceramic plate, a second foamed ceramic plate and a first buffer assembly. The first buffer assembly is clamped between the first foamed ceramic plate and the second foamed ceramic plate; the side, away from the first buffer assembly, of the first foamed ceramic plate is connected with the back plate through a first telescopic assembly. The side, away from the first buffering assembly, of the second foamed ceramic plate is connected with the keel through a second telescopic assembly. The foamed ceramic sound absorption device provided by the utility model is lasting in sound absorption strength, high in strength and long in service life, and the internal structure does not need to be frequently replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of sound-absorbing panels, in particular to a foam ceramic sound-absorbing device. Background Art

[0002] Foam ceramics are used in sound-absorbing panels due to their unique porous structure and excellent physical properties. The sound absorption principle is mainly based on the propagation and dissipation of sound waves in their porous structure. That is, when sound waves hit the surface of the foam ceramic board, part of the sound waves will be reflected, while the other part will enter the interior of the material. Inside the material, the sound waves will cause air vibrations in the pores. These vibrations will rub against the ceramic network, thereby converting the sound wave energy into heat energy and consuming it.

[0003] In the prior art, metal materials are usually used as support structures combined with foam ceramics to form sound-absorbing panels. For example, patent publication number CN204097894U discloses a lightweight, high-strength metal-ceramic composite sound-absorbing panel that uses aluminum plates as support materials and foam ceramics directly as the internal absorption layer.

[0004] However, when foam ceramics are directly used as the internal absorption layer and a metal shell and plate are provided as support, the sound waves will cause air vibration in the pores during the actual operation of the sound-absorbing panel. As a result, the ceramic network will cause friction during the vibration process, causing the absorption layer to become loose and split, and the absorption effect to gradually decrease. The metal shell and plate cannot fully guarantee the stability of the absorption layer during the sound absorption period, resulting in a significant shortening of the service life of the absorption layer and a gradual decrease in the sound absorption intensity.

[0005] Based on the above description, there is an urgent need for a foam ceramic sound absorbing device that is stable, lightweight and has high sound absorption strength. Utility Model Content

[0006] The utility model aims to provide a foam ceramic sound absorbing device, aiming to solve the technical problems of poor stability, low sound absorption intensity and short service life of existing foam ceramic plates.

[0007] The embodiments of the present invention are achieved through the following technical solutions:

[0008] A foam ceramic sound absorbing device comprises a keel, a back plate and a panel, wherein the back plate and the panel are arranged on opposite sides of the keel; further comprising a first foam ceramic plate, a second foam ceramic plate and a first buffer assembly; the first buffer assembly is sandwiched between the first foam ceramic plate and the second foam ceramic plate; the side of the first foam ceramic plate away from the first buffer assembly is connected to the back plate via a first telescopic assembly; the side of the second foam ceramic plate away from the first buffer assembly is connected to the keel via a second telescopic assembly.

[0009] Preferably, the top inner wall of the keel is provided with a plurality of first limiting grooves; the bottom inner wall of the keel is provided with a plurality of second limiting grooves opposite to the first limiting grooves; both ends of the first foam ceramic plate and the second foam ceramic plate are respectively embedded in the first limiting grooves and the first limiting grooves.

[0010] Preferably, the first buffer assembly includes a first frame and a plurality of first corrugated plates; the plurality of first corrugated plates are arranged at intervals inside the first frame; and the first frame is sandwiched between the first foam ceramic plate and the second foam ceramic plate.

[0011] Preferably, the first corrugated plate is provided with a plurality of spherical protrusions.

[0012] Preferably, it further includes a second buffer component; the second buffer component is arranged between the second foam ceramic plate and the panel.

[0013] Preferably, the second buffer assembly includes a second frame, a pair of clips and a plurality of second corrugated plates; the pair of clips are respectively arranged at the top end and the bottom end of the second frame; the clips are embedded in the slot between the second telescopic assembly and the keel; and the plurality of second corrugated plates are arranged at intervals inside the second frame.

[0014] Preferably, the second telescopic assembly includes a spring seat and a top pressure head; the spring seat is connected to the keel; the top pressure head is provided at one end of the spring seat away from the keel; the top pressure head extends toward the second foam ceramic plate.

[0015] Preferably, a plurality of curved reflective plates are provided on a side of the back plate close to the first foam ceramic plate.

[0016] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0017] The foam ceramic sound absorbing device provided by the utility model has the following advantages: during the sound absorption operation, sound waves enter from one side of the panel, are then initially absorbed by the first foam ceramic plate, and are further buffered by the first buffer component for the sound waves absorbed by the first foam ceramic plate. In the buffering process, the first buffer component plays the role of acoustic resistance, thereby further dissipating the sound waves while achieving the effect of reducing vibration and noise, thereby avoiding the situation where the foam ceramic plate is damaged by vibration when the sound waves first enter, thereby improving the service life of the sound absorbing plate. After being absorbed and dissipated, the sound waves are further absorbed again by the second foam ceramic plate, and finally reflected by the back plate and then reversely undergo the absorption process. If there are still new sound waves entering later, they can also play a certain role in mutual cancellation, thereby also improving the sound absorption intensity;

[0018] The first telescopic assembly and the second telescopic assembly can buffer and fix the first foam ceramic plate, the first buffer assembly and the second foam ceramic plate, thereby further reducing damage to the foam ceramic plate during the sound absorption process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the second buffer component;

[0022] Figure 3 for Figure 2 A magnified schematic diagram of local structure A.

[0023] Icon: 1-keel, 2-backboard, 3-panel, 4-first foam ceramic board, 5-second foam ceramic board, 6-first buffer assembly, 7-first telescopic assembly, 8-second telescopic assembly, 9-second buffer assembly, 91-second frame, 92-card strip, 93-second corrugated plate, 10-arc reflector. DETAILED DESCRIPTION

[0024] Example 1

[0025] See also Figures 1 to 3 The utility model provides the following technical solutions: a foam ceramic sound absorbing device, which is suitable for situations where the pore structure of foam ceramics is used to absorb sound.

[0026] Specifically, if Figure 1 As shown, a foam ceramic sound absorbing device includes a keel 1, a back panel 2 and a panel 3, wherein the back panel 2 and the panel 3 are arranged on opposite sides of the keel 1; the device also includes a first foam ceramic plate 4, a second foam ceramic plate 5 and a first buffer assembly 6; the first buffer assembly 6 is sandwiched between the first foam ceramic plate 4 and the second foam ceramic plate 5; the side of the first foam ceramic plate 4 away from the first buffer assembly 6 is connected to the back panel 2 via a first telescopic assembly 7; the side of the second foam ceramic plate 5 away from the first buffer assembly 6 is connected to the keel 1 via a second telescopic assembly 8.

[0027] In this embodiment, the keel 1 plays the role of fixing the backboard 2 and the panel 3. During the sound absorption operation, the sound wave enters from one side of the panel 3, and is then initially absorbed by the first foam ceramic plate 4. The sound wave absorbed by the first foam ceramic plate 4 is further buffered by the first buffer component 6. In this buffering process, the first buffer component 6 plays the role of acoustic resistance, thereby further losing the sound wave while reducing the effect of shock absorption and noise reduction, avoiding the situation where the foam ceramic plate is damaged by vibration when the sound wave just enters, thereby improving the service life of the sound-absorbing board. After absorption and loss, the sound wave is further absorbed again by the second foam ceramic plate 5, and finally reflected by the backboard 2, and then reversely undergoes the absorption process. If there are still new sound waves entering later, they can also play a certain role in mutual offsetting, thereby also improving the sound absorption intensity; wherein, the first telescopic component 7 and the second telescopic component 8 can play a role in buffering and fixing the first foam ceramic plate 4, the first buffer component 6 and the second foam ceramic plate 5, further reducing the damage to the foam ceramic plate during the sound absorption process.

[0028] In this embodiment, the thickness of the first foam ceramic plate 4 and the second foam ceramic plate 5 can be flexibly adjusted according to the application environment.

[0029] Specifically, if Figure 1 As shown, the top inner wall of the keel 1 is provided with multiple first limiting grooves; the bottom inner wall of the keel 1 is provided with multiple second limiting grooves opposite to the first limiting grooves; both ends of the first foam ceramic plate 4 and the second foam ceramic plate 5 are respectively embedded in the first limiting grooves and the first limiting grooves.

[0030] In this embodiment, after the two ends of the first foam ceramic plate 4 or the two ends of the second foam ceramic plate 5 are embedded in the first limiting groove and the second limiting groove, they are sealed by sealing the two side walls of the keel 1 with a cover plate, and the cover plate and the keel 1 can be connected by screwing.

[0031] In this embodiment, the first buffer assembly 6 includes a first frame and a plurality of first corrugated plates; the plurality of first corrugated plates are spaced apart inside the first frame; the first frame is sandwiched between the first foam ceramic plate 4 and the second foam ceramic plate 5. The first corrugated plates are provided with a plurality of spherical protrusions.

[0032] Specifically, if Figure 2 and Figure 3 As shown, the second buffer assembly 9 is also included; the second buffer assembly 9 is disposed between the second foam ceramic plate 5 and the panel 3. The second buffer assembly 9 includes a second frame 91, a pair of clamping strips 92, and a plurality of second corrugated plates 93. The pair of clamping strips 92 are respectively disposed at the top and bottom of the second frame 91; the clamping strips 92 are embedded in the clamping groove between the second telescopic assembly 8 and the keel 1; and the plurality of second corrugated plates 93 are spaced apart within the second frame 91.

[0033] In this embodiment, the second corrugated plate 10 is also provided with a plurality of spherical protrusions to further increase the acoustic resistance and enhance the shock absorption effect.

[0034] Specifically, if Figure 1 As shown, the second telescopic assembly 8 includes a spring seat and a top pressure head; the spring seat is connected to the keel 1; the top pressure head is arranged at one end of the spring seat away from the keel 1; and the top pressure head extends toward the second foam ceramic plate 5.

[0035] In this embodiment, the end of the pressing head close to the foam ceramic plate is made of sponge material, and the end of the pressing head connected to the spring seat is made of hard material such as plastic or alloy.

[0036] Specifically, if Figure 1 As shown, a plurality of curved reflective plates 10 are provided on one side of the back plate 2 close to the first foam ceramic plate 4 .

[0037] In this embodiment, by arranging a plurality of arc-surface reflection plates 10 at intervals, the reflection area of ​​the sound waves can be further increased, and the sound waves can be dispersed and consumed.

[0038] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A foam ceramic sound absorbing device, comprising a keel (1), a back plate (2) and a panel (3), wherein the back plate (2) and the panel (3) are arranged on opposite sides of the keel (1), and characterized in that: The invention also comprises a first foam ceramic plate (4), a second foam ceramic plate (5) and a first buffer component (6); the first buffer component (6) is sandwiched between the first foam ceramic plate (4) and the second foam ceramic plate (5); the side of the first foam ceramic plate (4) away from the first buffer component (6) is connected to the back plate (2) via a first telescopic component (7); the side of the second foam ceramic plate (5) away from the first buffer component (6) is connected to the keel (1) via a second telescopic component (8).

2. The foam ceramic sound absorbing device according to claim 1, characterized in that: The top inner wall of the keel (1) is provided with a plurality of first limiting grooves; the bottom inner wall of the keel (1) is provided with a plurality of second limiting grooves opposite to the first limiting grooves; both ends of the first foam ceramic plate (4) and the second foam ceramic plate (5) are respectively embedded in the first limiting grooves and the second limiting grooves.

3. The foam ceramic sound absorbing device according to claim 1, characterized in that: The first buffer component (6) comprises a first frame and a plurality of first corrugated plates; the plurality of first corrugated plates are arranged at intervals inside the first frame; and the first frame is sandwiched between the first foam ceramic plate (4) and the second foam ceramic plate (5).

4. The foam ceramic sound absorbing device according to claim 3, characterized in that: The first corrugated plate is provided with a plurality of spherical protrusions.

5. The foam ceramic sound absorbing device according to any one of claims 1 to 4, characterized in that: It also includes a second buffer component (9); the second buffer component (9) is arranged between the second foam ceramic plate (5) and the panel (3).

6. The foam ceramic sound absorbing device according to claim 5, characterized in that: The second buffer assembly (9) comprises a second frame (91), a pair of clamping strips (92) and a plurality of second corrugated plates (93); the pair of clamping strips (92) are respectively arranged at the top end of the second frame (91) and the bottom end of the second frame (91); the clamping strips (92) are embedded in the clamping groove between the second telescopic assembly (8) and the keel (1); and the plurality of second corrugated plates (93) are arranged at intervals inside the second frame (91).

7. The foam ceramic sound absorbing device according to claim 6, characterized in that: The second telescopic assembly (8) comprises a spring seat and a top pressure head; the spring seat is connected to the keel (1); the top pressure head is arranged at one end of the spring seat away from the keel (1); and the top pressure head extends toward the second foam ceramic plate (5).

8. The foam ceramic sound absorbing device according to claim 1, characterized in that: A plurality of curved reflective plates (10) are provided on one side of the back plate (2) close to the first foam ceramic plate (4).

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