CN211597148U - Single-leg strip seam sound absorption structure - Google Patents
Single-leg strip seam sound absorption structure Download PDFInfo
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- CN211597148U CN211597148U CN201922304086.8U CN201922304086U CN211597148U CN 211597148 U CN211597148 U CN 211597148U CN 201922304086 U CN201922304086 U CN 201922304086U CN 211597148 U CN211597148 U CN 211597148U
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/86—Sound-absorbing elements slab-shaped
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
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- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
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Abstract
The utility model relates to a single-leg sound absorption structure with a seam, which comprises a panel formed by a plurality of laths which are arranged and combined in parallel, wherein a clearance cavity with a slit outlet is formed between the laths, and one side of the lath is provided with a fixed leg which is used for fixedly installing the lath; the single-leg sound absorption structure with the strip seams improves the sound absorption efficiency, reduces the material consumption and reduces the production cost; the arrangement of the single fixing leg enables the width of the gap cavity to be increased, the collision and friction probability of incident sound waves in the sound absorption cavity is increased, and the sound wave dissipation is increased; the gap cavity simultaneously forms a Helmholtz perforated resonator and a reactive muffler, so that the sound absorption effect is enhanced; the single fixing leg is used as a fixing base of the batten, so that strong limitation on vibration of the batten under the influence of incident sound waves is avoided, and the energy of the incident sound waves is favorably dissipated through the vibration of the batten.
Description
Technical Field
The utility model relates to a building material field especially relates to a sound structure is inhaled to single leg strip seam.
Background
The sound-absorbing board is an ideal sound-absorbing decorative material, and can be widely used in places such as music halls, movie theaters, recording rooms, studio, monitoring rooms, conference rooms, gymnasiums, exhibition halls, song and dance halls, KTV rooms, family movie and television halls, factories, silent rooms, courts, report halls, audition rooms and the like, and places such as sound-absorbing wall boards and ceiling boards of large public buildings.
At present, the sound-absorbing boards are classified according to structures and generally comprise sound-absorbing wedge sound-absorbing boards, channel wood sound-absorbing boards, perforated sound-absorbing boards and the like. The sound-absorbing wedge is a cone-shaped or wedge-shaped sound absorber manufactured by cutting porous or fibrous materials. The groove wood sound-absorbing board is a structure that the front surface of a medium-density fiberboard is provided with a groove and the back surface of the fiberboard is provided with a round hole, and the groove wood sound-absorbing board not only has all functions of a plane sound-absorbing board, but also can conduct sound waves at different angles through a three-dimensional surface of the groove wood sound-absorbing board. The perforated sound-absorbing board utilizes the characteristic property of the material, namely, a large number of tiny communicated gaps are formed in the material, sound waves enter the material and generate friction with the material to convert sound energy into heat energy. Particularly, a wood sound-absorbing panel produces a particularly excellent sound-absorbing effect on sound waves because the interior of wood contains many fine pores. But the wood is easy to deform and cannot prevent fire in use, and the most applied sound-absorbing plate in the prior art is an aluminum strip seam sound-absorbing plate. The section of the sound-absorbing board is in a shape of pi, and the sound-absorbing board is generally called a double-leg aluminum strip seam sound-absorbing board (such as Chinese patent CN106013660A, a sound-absorbing board and a technical scheme of a mounting method thereof) which is fixed on a wall surface or a ceiling through a leg mounting structure. The sound absorption effect of the double-leg aluminum strip seam sound absorption plate needs to be improved, and the processing difficulty needs to be reduced.
With the development of modern society, the performance requirements of sound absorbing panels are continuously rising, and people hope to obtain a sound absorbing structure with better sound absorbing effect so as to obtain better life quality.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a single leg strip seam sound absorbing structure can gain better sound effect of inhaling, and this technical scheme is realized like this:
the utility model provides a single leg strip seam sound-absorbing structure, includes the panel that a plurality of laths parallel arrangement combination formed, form the clearance cavity that has the slit export between the lath, the lath include the strip main part with set up in the fixed leg of strip main part one side only establishes single fixed leg on every lath, fixed leg is used for fixed mounting the lath.
The gap cavities among the battens form a sound-absorbing cavity array, and incident sound waves collide and rub in the sound-absorbing cavity to be converted into heat energy to be consumed. The length direction of the clearance cavity is the extension length direction of the lath.
Only a single fixing leg is provided on each slat, so that all spaces between the fixing legs on two adjacent slats can be used for sound absorption. And for the strip seam sound absorption structure with two or even multiple legs commonly used in the prior art, the cavity between the fixed legs on the same lath can not be used for absorbing sound, thereby reducing the overall sound absorption effect. The width of the clearance cavity is increased due to the arrangement of the single fixing leg, the collision and friction probability of incident sound waves in the sound absorption cavity is increased, and the sound wave dissipation is increased. The strip seam sound absorption structure of the single fixing leg improves the sound absorption efficiency, reduces the material consumption and reduces the production cost.
In addition, the single fixing leg is used as a fixing base of the batten, so that the batten can be fixed on one hand, and strong limitation on vibration of the batten under the influence of incident sound waves is avoided on the other hand, and the energy of the incident sound waves is favorably dissipated through the vibration of the batten. For the sound absorption structure with two legs and even multiple leg slits commonly used in the prior art, the fixing of the batten is too firm, the vibration of the batten under the influence of incident sound waves is limited, and the forced vibration of the batten under the influence of the incident sound waves is beneficial to sound wave dissipation.
Preferably, the panel also comprises a keel, and the batten is fixedly connected with the keel to form a panel; the keel is provided with a socket, and the fixing legs are connected with the socket in a clamping manner. The keel has simple structure and low cost, and is suitable for serving as a fixing base of the batten.
In implementation, the keel is fixed on the wall body, the battens are fixedly connected with the keel to form a panel, and a sound absorption layer is filled between the panel and the wall body. The sound absorption layer type, volume weight, thickness and the like can change the sound absorption performance of the single-leg strip seam sound absorption structure.
The gap cavity forms a Helmholtz perforated resonator, the sound absorption effect is enhanced, the slits are perforations of the Helmholtz perforated resonator, and the gap cavity body is a resonant cavity of the Helmholtz perforated resonator. The entire panel forms an array of helmholtz hole resonators.
The helmholtz effect performs analog calculation on the sound absorption sound wave frequency:
frequency f of the sound wave absorbed mainly0(in Hz) is:
c-sound velocity, S-perforation cross-sectional area, V-cavity volume, t-perforation depth, -perforation end correction;
the clearance cavity simultaneously forms a reactive muffler to enhance the sound absorption effect, the slit is used as a small-size channel of the reactive muffler, and the main body of the clearance cavity is a large-size channel of the reactive muffler. When the cross-sectional area of the large-sized passage and the cross-sectional area of the small-sized passage are increased, the sound transmission loss of the reactive muffler is increased. The entire panel forms an array of reactive mufflers.
Reactive muffler acoustic loss
Wherein:
Further preferably, both side ends of the strip main body of the strip are provided with a 1-5mm high inner convex edge in accordance with the protruding direction of the fixing leg, so that the slit has a certain depth.
As the perforated and reactive muffler small-sized passages of the helmholtz perforated resonator, a slit structure is necessary, and the depth of the slit ensures the formation of the helmholtz perforated resonator and the reactive muffler effect.
To form a clearance cavity with slit exits between the slats, the slits need to have a certain depth, e.g. above 1 mm. When the thickness that adopts the strip main part forms the slit, can increase the material waste of strip main part, the increase of strip main part thickness can reduce the vibration under the incident sound wave influence of strip main part simultaneously, reduces the sound wave dissipation effect.
In an implementation, preferably, the fixing leg extends along a length direction of the slat, and a fixing portion is provided at a distal end of the fixing leg, and the fixing portion is made of a ductile material.
In practice, preferably, a necking part is arranged in the socket. The thin thickness of the slats and the configuration of the keel sockets are not suitable for forming an interference or deformation fit. The fixed leg inserts the socket, the fixed part of socket department is destroyed and is formed the deformation breach, promotes along lath length direction the lath will not take place the fixed part joint of deformation in the throat.
For example, the strip is an aluminum-alloy material, and the retainer portion of the aluminum-alloy material strip is broken through the portion of the constricted portion to form the deformation notch. The batten is pushed along the length direction of the batten, the non-deformed fixing part is clamped in the necking part, and the batten is fixed in the socket.
Optionally, the cross section of the batten is in an i shape, and the cross section of the fixing part is in one of a single-arc trapezoid shape, a side-arc trapezoid shape, a full-arc trapezoid shape, a side-arc inverted trapezoid shape, a single-arc inverted trapezoid shape, a full-arc inverted trapezoid shape, a straight-side fan shape, a side-arc concave fan shape, an arc shape, a concave arc shape, a convex arc shape, a triangle shape, a convex triangle shape, a concave triangle shape, an arc shape, a regular trapezoid shape, a side-arc inverted trapezoid shape and a fan-shaped inverted triangle.
Optionally, the strip body is a plane, an arc-shaped arch surface, an arc-shaped concave surface, a corrugated surface, a convex prism surface or a concave prism surface.
Optionally, the lath is an aluminum alloy, and the keel is an alloy steel.
In practice, optionally, the gap between the strip bodies of adjacent slats is 1-20mm and the length of the fixing leg is 2-10 mm.
In practice, the slit area may alternatively be 1-40% of the total panel area. The value of the area of the slit in the whole panel is the sound transmission rate. When the sound transmission rate is less than 18%, sound absorption is realized mainly in two modes of perforation resonance and resistance noise elimination; when the sound transmission rate is more than 18%, sound absorption is mainly achieved for the sound absorption layer behind the panel (i.e., a perforated sound absorption structure). The optimal sound absorption frequency range of the perforation resonance and resistance noise elimination mode and the perforation sound absorption structure mode is inconsistent, different sound transmission rates are designed through calculation and experiments, and the sound absorption target in different frequency ranges is aimed at.
The utility model provides a single leg strip seam sound absorbing structure has following beneficial effect:
1. the strip seam sound absorption structure of the single fixing leg improves the sound absorption efficiency, reduces the material consumption and reduces the production cost;
2. the arrangement of the single fixing leg enables the width of the gap cavity to be increased, the collision and friction probability of incident sound waves in the sound absorption cavity is increased, and the sound wave dissipation is increased;
3. the gap cavity simultaneously forms a Helmholtz perforated resonator and a reactive muffler, so that the sound absorption effect is enhanced;
4. the single fixing leg is used as a fixing base of the batten, so that strong limitation on vibration of the batten under the influence of incident sound waves is avoided, and the energy of the incident sound waves is favorably dissipated through the vibration of the batten;
5. the fixing part which is matched and arranged on the keel is designed, so that the installation and the disassembly are convenient;
6. different sound transmission rates can be designed through calculation and experiments, and the sound absorption targets in different frequency ranges can be designed;
7. different widths of the battens can be designed through calculation and experiments, and the sound absorption targets in different frequency ranges can be designed.
Drawings
Fig. 1 is a schematic front view of the arrangement and combination of the laths on the keel according to the embodiment 1 of the invention;
fig. 2 is a back schematic view of the arrangement and combination of the laths on the keel according to the embodiment 1 of the invention;
FIG. 3 is a schematic view of the structure of a slat according to embodiment 1 of the present invention;
fig. 4 is a schematic view of a keel structure in embodiment 1 of the invention;
fig. 5 is a schematic side view of a keel according to embodiment 1 of the invention;
fig. 6 is a schematic view of the installation of the batten on the keel according to the embodiment 1 of the invention;
fig. 7 is a schematic view of a clearance cavity in embodiment 1 of the present invention;
fig. 8 is a schematic view of a slat according to embodiment 2 of the present invention;
fig. 9 is a schematic view of a clearance cavity in embodiment 2 of the present invention;
FIG. 10 is a schematic view of a single-arc trapezoidal fixing portion of the present invention;
FIG. 11 is a schematic view of a side-arc trapezoidal fixing portion of the present invention;
FIG. 12 is a schematic view of a full arc trapezoid fixing portion of the present invention;
FIG. 13 is a schematic view of a side-arc inverted-trapezoid fixing part of the present invention;
FIG. 14 is a schematic view of a single-arc inverted trapezoid fixing part of the present invention;
FIG. 15 is a schematic view of a full arc inverted trapezoid fixing part of the present invention;
FIG. 16 is a schematic view of a straight-sided fan-shaped fixing portion of the present invention;
FIG. 17 is a schematic view of a side arc concave sector-shaped fixing portion of the present invention;
fig. 18 is a schematic view of an arc-shaped fixing portion of the present invention;
FIG. 19 is a schematic view of a concave arc-shaped fixing portion of the present invention;
FIG. 20 is a schematic view of the convex arc-shaped fixing portion of the present invention;
FIG. 21 is a schematic view of a triangular fixing portion of the present invention;
FIG. 22 is a schematic view of the protruding triangle fixing part of the present invention;
FIG. 23 is a schematic view of the concave triangular fixing portion of the present invention;
fig. 24 is a schematic view of the arc fixing part of the present invention;
fig. 25 is a schematic view of a regular trapezoid fixing part of the present invention;
FIG. 26 is a schematic view of a side-arc inverted-trapezoid fixing part of the present invention;
FIG. 27 is a schematic view of a fan-shaped inverted triangle fixing part of the present invention;
figure 28 is a comparison graph of sound absorption coefficient between embodiments of the present invention;
reference numerals: panel (100), lath (1), main body (11), inner convex edge (111), fixing leg (12), fixing part (121), deformation notch (122), keel (2), socket (21), necking part (211), clearance cavity (3), slit (31), sound absorbing layer (4), wall (5)
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example 1
A sound absorption structure with single-leg seam comprises a plurality of slats (1) which are arranged in parallel and fixed on a keel (2) to form a panel (100). The slats 1 form between them a clearance space 3 with an outlet of the slit 31, the slats 1 comprising a slat body 11 and, arranged on one side of the slat body 11, fixing legs 12, only a single fixing leg 12 being arranged on each slat 1, the fixing leg 12 being intended for the fixed mounting of the slat 1. The fixing leg 12 extends along the length direction of the slat 1, and a fixing portion 121 is disposed at the end of the fixing leg 12, and the fixing portion 121 is made of a ductile material. The lath 1 is made of aluminum alloy, and the keel 2 is made of alloy steel. The keel 2 has simple structure and low cost, and is suitable for being used as a fixed base of the batten 1.
The keel 2 is provided with a socket 21, and the fixing leg 12 is connected with the socket 21 in a clamping manner. The cross section of the lath 1 is I-shaped, and the cross section of the fixing part 121 is in a regular trapezoid shape. The strip body 11 is planar.
A necking part 211 is arranged in the socket 21. The interference or deformation fit is not suitable due to the thin thickness of the slats 1 and the configuration of the sockets of the keels 2. The fixing legs 12 are inserted into the insertion holes 21, the fixing portions 121 at the insertion holes 21 are broken to form deformation notches 122, the batten 1 is pushed along the length direction of the batten 1, and the fixing portions 121 which are not deformed are clamped on the necking portions 211.
The slit 31 structure is necessary as a small-sized passage of the penetration and reactive muffler of the helmholtz perforated resonator, and the depth of the slit 31 ensures the formation of the helmholtz perforated resonator and the reactive muffler effect. In a specific implementation, the two side ends of the strip main body 11 of the batten 1 are provided with 2mm high inner convex edges 111 which are consistent with the protruding direction of the fixing legs 12. The depth of the slit 31 is ensured by the inwardly protruding rim 111.
The gap between the strip bodies 11 of adjacent slats 1 is 5mm, and the length of the fixing leg 12 is 5 mm. The strip body 11 has a width of 5 mm.
The interstitial cavities 3 between the battens 1 form an array of sound-absorbing cavities, and incident sound waves collide and rub in the sound-absorbing cavities and are converted into heat energy to be consumed. The length direction of the clearance cavity 3 is the extension length direction of the lath 1.
Only a single fastening leg 12 is provided on each slat 1, so that all the space between the fastening legs 12 on two adjacent slats 1 is available for sound absorption. For the conventional double-leg or even multi-leg slit sound absorption structure in the prior art, the cavity between the fixing legs 12 on the same batten 1 cannot be used for sound absorption, so that the overall sound absorption effect is reduced. The arrangement of the single fixing leg 12 increases the width of the clearance cavity 3, the collision and friction probability of the incident sound wave in the sound absorption cavity becomes high, and the sound wave dissipation is increased. The strip seam sound absorption structure of the single fixing leg 12 improves the sound absorption efficiency, reduces the material consumption and reduces the production cost.
Furthermore, the single fastening leg 12 serves as a fastening base for the panel 1, on the one hand, to fasten the panel 1 and, on the other hand, does not form a strong limitation on the vibrations of the panel 1 under the influence of incident sound waves, which facilitates the dissipation of the energy of the incident sound waves through the vibrations of the panel 1. For the sound absorbing structure with two or even multiple leg slits commonly used in the prior art, the fixing of the strip 1 is too firm, the vibration of the strip 1 under the influence of incident sound waves is limited, however, the forced vibration of the strip 1 under the influence of the incident sound waves is beneficial to the dissipation of the sound waves.
In the implementation, the keel 2 is fixed on the wall 5, the panel 1 is fixedly connected with the keel 2 to form a panel 100, and a glass wool sound absorption layer 4 with the thickness of 50mm is filled between the panel 100 and the wall 5.
The gap cavity 3 forms a helmholtz perforation resonator to enhance the sound absorption effect, the slit 31 is a perforation of the helmholtz perforation resonator, and the main body of the gap cavity 3 is a resonance cavity of the helmholtz perforation resonator. The entire panel 100 forms an array of helmholtz hole resonators.
Actual width d of slit 3110.5 cm. The actual length of the slat 1 is 50 cm; and (3) carrying out analog calculation on the sound absorption sound wave frequency by combining the Helmholtz effect:
frequency f of the sound wave absorbed mainly0(in Hz) is:
c-the speed of sound,
s-the cross-sectional area of the through hole,
v-the volume of the cavity, and,
t-the depth of the perforation,
-a puncture tip correction;
c-sound velocity, generally 34000 cm/s;
the area of the S-neck (slit) is taken as the area S of the (slit) is 0.5cm × 50cm 25cm2；
V-cavity volume, in example 1V 50 × 2.5.5 2.5 × 0.5.5 62.8cm3；
t-slit depth, in example 1 t is 0.2 cm;
the correction amount of the slit end was 0.8D (D is a slit width, 0.4cm) in example 1.
Calculated f03969 Hz. The human ear can feel 16Hz-20000Hz sound wave. The human ear has the strongest force to the frequency range of 2000-5000 Hz. Calculating the frequency f03969Hz falls within this range and therefore has a high practical significance.
The clearance cavity 3 simultaneously forms a reactive muffler to enhance the sound absorption effect, the slit 31 is used as a small-sized channel of the reactive muffler, and the main body of the clearance cavity 3 is a large-sized channel of the reactive muffler. When the cross-sectional area of the large-sized passage and the cross-sectional area of the small-sized passage are increased, the sound transmission loss of the reactive muffler is increased. The entire panel 100 forms an array of reactive mufflers. The design of the single fixed leg 12 can increase the specific expansion ratio by nearly a factor of two compared to a slotted acoustic structure with two or even more legs.
The two sound absorption effects can be simultaneously influenced by changing the width of the batten 1, and different widths of the batten 1 are designed through calculation and experiments, so that the sound absorption targets in different frequency ranges are achieved.
In a specific implementation, the area of the slit 31 occupies 20% of the whole area of the panel 100. The area of the slit 31 in the whole panel 100 is the sound transmittance. When the sound transmission rate is less than 18%, sound absorption is realized mainly in two modes of perforation resonance and resistance noise elimination; when the sound transmission rate is more than 18%, sound absorption is mainly achieved for the sound absorption layer 4 behind the panel 100 (i.e., a perforated sound absorption structure).
Example 2:
Example 3:
example 3 differs from example 2 in that the sound-absorbing layer 4 of glass wool with a thickness of 50mm on the back side is removed.
Comparative example 1: the sound absorption structure with double leg slits has the strip width of 20mm, the strip slit width of 3mm and the sound absorption layer with glass wool with the thickness of 50mm filled on the back.
The suctions of examples 1, 2 and 3 were tested according to the GB/T20247-2006/ISO 354-2003 standardAcoustic coefficient αsWhile comparing the sound absorption coefficient α of comparative example 1sThe test data under the four conditions are shown in table 1:
TABLE 1
In table 1, examples 1 and 2 are excellent in the overall sound absorption performance under the conditions of 100-. Example 3 is a test condition in which the sound absorbing layer 4 of glass wool having a thickness of 50mm on the back side was removed, and there was a peak of absorption that exhibited superior performance for incident sound waves around 200Hz, it was concluded that the energy of incident sound waves at low frequencies was significantly dissipated by the vibration of the slats causing the sound absorbing structure of one-leg slit. The value of the sound absorption coefficient continues to rise substantially continuously from 1000 Hz. The helmholtz resonator and reactive muffler, inferred to be formed by the interstitial cavity 3, enhance the sound absorption effect. Simulated calculation of the acoustic frequency of the Helmholtz effect in example 103969Hz, can also be used to explain the above effect.
Examples 1 and 2 are test conditions in which a glass wool sound absorbing layer 4 with a thickness of 50mm on the back surface is present, and a peak with superior performance can still be seen in the vicinity of 200Hz without being masked by the glass wool sound absorbing layer 4, showing that the single-leg slat 1 array structure is significant for the sound absorption coefficient enhancement in the vicinity of 200 Hz.
In table 1, the sound absorption coefficient of the double-leg strip gap sound absorption structure of comparative example 1 (strip width 20mm, strip gap width 3mm, and back filled with 50mm thick glass wool sound absorption layer) starts to decrease sharply when the sound wave is greater than 1000 Hz; in contrast, in example 1 and example 2, after the sound wave is greater than 1000Hz, the sound absorption coefficient is still large, and the sound absorption effect in the frequency range is enhanced by the Helmholtz perforated resonator and the reactive muffler formed by the gap cavities 3 of the array of the single-leg battens 1.
Example 4:
as shown in fig. 8-9, embodiment 4 differs from embodiment 1 in that the strip body 11 of the slat 1 has a thickness of 2mm, and that the gap chamber 3 with the outlet of the slit 31 is formed by the thickness of the strip body 11.
The embodiment is only a single implementation manner of the present invention, and for those skilled in the art, other embodiments can be obtained according to the attached drawings without any creative effort, and are also within the protection scope of the present invention.
Claims (11)
1. The utility model provides a sound structure is inhaled to single leg strip seam which characterized in that: the novel batten connecting structure comprises a panel (100) formed by a plurality of battens (1) in parallel arrangement and combination, a clearance cavity (3) with a slit (31) outlet is formed between the battens (1), each batten (1) comprises a batten main body (11) and fixing legs (12) arranged on one side of the batten main body (11), only a single fixing leg (12) is arranged on each batten (1), and the fixing legs (12) are used for fixedly mounting the battens (1).
2. The single-leg seam sound absorption structure according to claim 1, further comprising a keel (2), wherein the slat (1) is fixedly connected with the keel (2) to form a panel (100); the keel (2) is provided with sockets (21), and the fixing legs (12) are connected with the sockets (21) in a clamping manner.
3. The single-leg slit sound-absorbing structure as claimed in claim 2, wherein both side ends of the strip main body (11) of the strip (1) are provided with a 1-5mm high inward-projecting edge (111) in conformity with the projecting direction of the fixing leg (12).
4. The structure according to claim 3, wherein the fixing leg (12) extends along the length of the strip (1), and the fixing leg (12) has a fixing portion (121) at the end thereof, and the fixing portion (121) is made of a ductile material.
5. The sound absorption structure according to claim 4, wherein a neck-down portion (211) is provided in the insertion opening (21), the fixing leg (12) is inserted into the insertion opening (21), the fixing portion (121) at the insertion opening is broken to form a deformation notch, the strip is pushed along the length direction of the strip, and the fixing portion (121) which is not deformed is clamped to the neck-down portion (211).
6. The single-leg sound absorption structure with the seam as claimed in claim 2, wherein the keel (2) is fixed on the wall (5), the panel (100) is formed by fixedly connecting the batten (1) and the keel (2), and the sound absorption layer (4) is filled between the panel (100) and the wall (5).
7. The single-leg slit sound absorbing structure according to claim 4 or 5, wherein the cross section of the strip (1) is i-shaped, and the cross section of the fixing portion (121) has a shape of one of a single-arc trapezoid, a side-arc trapezoid, a full-arc trapezoid, a single-arc inverted trapezoid, a full-arc inverted trapezoid, a straight-sided sector, a side-arc concave sector, an arc, a concave arc, a convex arc, a triangle, a convex triangle, a concave triangle, an arc, a regular trapezoid, a side-arc inverted trapezoid, and a fan-shaped inverted triangle.
8. The single-leg slit sound absorbing structure according to claim 1, wherein the bar main body (11) is a flat surface, an arc-shaped arcuate surface, an arc-shaped concave surface, a corrugated surface, a convex ridge surface, or a concave ridge surface.
9. Single leg slot sound absorbing construction according to claim 1, 2, 4, 5 or 6, characterized in that the strip (1) is of aluminium alloy.
10. The single-leg slit sound absorbing structure as claimed in claim 1, 2, 4, 5 or 6, wherein the gap between the strip main bodies (11) of the adjacent slats (1) is 1-20mm, and the length of the fixing leg (12) is 2-10 mm.
11. The single leg slot sound absorbing structure of claim 1, 2, 4, 5 or 6, wherein the area of the slits (31) is 1-40% of the entire area of the panel (100).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2019111135946 | 2019-11-14 | ||
| CN201911113594 | 2019-11-14 |
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| CN201922304086.8U Active CN211597148U (en) | 2019-11-14 | 2019-12-20 | Single-leg strip seam sound absorption structure |
| CN201911322402.2A Active CN110863577B (en) | 2019-11-14 | 2019-12-20 | Sound structure is inhaled to single leg strip seam |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863577A (en) * | 2019-11-14 | 2020-03-06 | 广州新静界消音材料有限公司 | Single-leg strip seam sound absorption structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111451118B (en) * | 2020-05-14 | 2021-05-11 | 郑州科技学院 | Device for realizing music interaction between music rooms |
| CN114654193B (en) * | 2020-12-22 | 2023-03-14 | 广州新静界声学科技股份有限公司 | Processing method of strip-seam sound-absorbing panel |
| CN113775067B (en) * | 2021-10-25 | 2023-03-24 | 广州新静界声学科技股份有限公司 | Composite sound absorption assembly with reinforced low-frequency absorption |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AT15353U3 (en) * | 2017-01-19 | 2018-01-15 | Eps Ind Gmbh | Insulation Board |
| CN208105713U (en) * | 2017-12-31 | 2018-11-16 | 安徽马钢工程技术集团有限公司 | A kind of T-type aluminium attachment device of horizontally-arranged metal board wall |
| CN209277438U (en) * | 2018-10-25 | 2019-08-20 | 佛山天戈科技有限公司 | A kind of aluminum strip seam abatvoix |
| CN209277439U (en) * | 2018-10-25 | 2019-08-20 | 佛山天戈科技有限公司 | Aluminum strip stitches sound arrester |
| CN211597148U (en) * | 2019-11-14 | 2020-09-29 | 广州新静界消音材料有限公司 | Single-leg strip seam sound absorption structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863577A (en) * | 2019-11-14 | 2020-03-06 | 广州新静界消音材料有限公司 | Single-leg strip seam sound absorption structure |
| CN110863577B (en) * | 2019-11-14 | 2024-08-06 | 广州新静界消音材料有限公司 | Sound structure is inhaled to single leg strip seam |
Also Published As
| Publication number | Publication date |
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| CN110863577B (en) | 2024-08-06 |
| CN110863577A (en) | 2020-03-06 |
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