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WO2004005636A1 - Sound-absorbing material - Google Patents

Sound-absorbing material Download PDF

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Publication number
WO2004005636A1
WO2004005636A1 PCT/KR2003/001312 KR0301312W WO2004005636A1 WO 2004005636 A1 WO2004005636 A1 WO 2004005636A1 KR 0301312 W KR0301312 W KR 0301312W WO 2004005636 A1 WO2004005636 A1 WO 2004005636A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound absorbing
air layer
panel
sound
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2003/001312
Other languages
French (fr)
Inventor
You-Mi Kuen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AU2003245092A priority Critical patent/AU2003245092A1/en
Publication of WO2004005636A1 publication Critical patent/WO2004005636A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • 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
    • 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • 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
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8428—Tray or frame type panels or blocks, with or without acoustical filling containing specially shaped acoustical bodies, e.g. funnels, egg-crates, fanfolds
    • 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
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8433—Tray or frame type panels or blocks, with or without acoustical filling with holes in their face
    • 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
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8433—Tray or frame type panels or blocks, with or without acoustical filling with holes in their face
    • E04B2001/8438—Slot shaped holes
    • 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
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8452—Tray or frame type panels or blocks, with or without acoustical filling with peripheral frame members

Definitions

  • the present invention relates to a sound absorbing panel, and more particularly to a sound absorbing panel for achieving a sound absorbing effect by using porosity as well as membrane vibration.
  • Sound absorption refers to an action of blocking sounds using certain sound absorbing materials. As widely known, sound absorption is mainly achieved by using glass fiber, rock wool or the like utilizing their porosity, or by a thin plate, cloth, or the like utilizing membrane vibration.
  • Such glass fiber or rock wool is formed with a plurality of pores (hereinafter, referred as “porous portions”) to allow sound waves entering therein to be dissipated.
  • the glass fiber or rock wool achieves a sound absorbing effect due to the fact that sound waves entering its porous portions are absorbed therein as it continuously collides against the surfaces of the porous portions .
  • a membrane member, thin cloth, or the like As a representative example of sound absorbing materials using membrane vibration, there are a membrane member, thin cloth, or the like.
  • the membrane member or thin cloth is spaced apart from a wall body to define an air layer therebetween.
  • the air layer serves to vibrate sound waves so as to cause a spring vibration phenomenon.
  • Such vibration dissipates acoustic energy of the sound waves transmitted through the membrane member or thin cloth, thereby achieving a sound absorbing effect .
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide a sound absorbing panel, which can maximize a sound absorbing effect by utilizing porosity of sound absorbing plates provided around and behind an air layer as well as membrane vibration of swirly membrane members .
  • a sound absorbing panel comprising: a frame defining an air layer therein, the frame being open at front and rear sides thereof and closed at four sides thereof by side walls, respectively; a vibrating plate mounted at the open front side of the frame, the vibrating plate including a center flat portion centrally recessed from the vibrating plate toward the air layer, sound absorbing portions having a plurality of swirly membrane members radially extending from respective certain positions around the center flat portion to respective certain positions on an inner periphery of the frame to form a swirl pattern, and slits formed between the swirly membrane members, respectively, so as to allow sound waves to enter the air layer therethrough; side sound absorbing plates provided at inner surfaces of the side walls, respectively, and having porous portions, respectively; and a rear sound absorbing plate mounted at the open rear side of the frame for absorbing sound waves passed by the air layer.
  • Fig. 1 is a perspective view illustrating a sound absorbing panel of the present invention
  • Fig. 2 is a front view illustrating the sound absorbing panel of the present invention
  • Fig. 3 is a sectional view taken along a line A-A shown in Fig . 2 ;
  • Fig. 4 is a perspective view illustrating an installed state of the sound absorbing panel according to the present invention
  • Fig. 5 is a sectional view taken along a line B-B shown in Fig. 4;
  • Fig. 6 is a sectional view illustrating a sound absorbing panel of the prior art .
  • Fig. 1 is a perspective view illustrating a sound absorbing panel of the present invention.
  • Fig. 2 is a front view illustrating the sound absorbing panel of the present invention.
  • Fig. 3 is a sectional view taken along a line A-A shown in Fig. 2.
  • the sound absorbing panel of the present invention comprises a frame 1 defining an air layer 11 therein, which is open at front and rear sides thereof and closed at four sides thereof by side walls 12, respectively.
  • a vibrating plate 2 is mounted at the open front side of the frame 1.
  • the vibrating plate 2 is configured to induce a membrane vibration phenomenon, thereby achieving a sound absorbing effect.
  • the open rear side of the frame 1 is mounted with a rear sound absorbing plate 3, which serves to absorb sound waves passed by the air layer 11 defined in the frame 1.
  • the side walls 12 of the frame 1 are provided at the inner surfaces thereof with side sound absorbing plates 4, respectively.
  • the side sound absorbing plates 4 have porous portions, respectively.
  • the vibrating plate 2 comprises a center flat portion
  • the center flat portion 21 is centrally recessed from the vibrating plate 2 toward the air layer 11.
  • the sound absorbing portions 22 include a plurality of swirly membrane members 221, which radially extend from respective certain positions around the center flat portion 21 to respective certain positions on the inner periphery of the frame 1, thereby forming a swirl pattern.
  • the slits 23 are formed between the swirly membrane members 221, respectively, so as to allow sound waves to enter the air layer 11 therethrough.
  • One or more perforated absorbing holes 5 are formed around the outer edges of the front side of the swirly membrane members 221.
  • the perforated absorbing holes 5 serve to allow sound waves to directly enter the side sound absorbing plates 4 mounted around the air layer 11.
  • the side walls 12 of the frame 1 are formed with one or more passage openings 6, which serve to add a sound absorbing effect obtainable from other side sound absorbing plates 4 provided in adjacent sound absorbing panels.
  • the vibrating plate 2 is formed at the corners thereof with a plurality of perforated openings 7.
  • the perforated openings 7 communicate with the air layer 11 defined in the frame 1, thereby maximizing a sound absorbing effect of the rear and side sound absorbing plates 3 and 4.
  • the rear sound absorbing plate 3 is centrally provided with a support rod 8 extending inwardly from the inner surface thereof.
  • the support rod 8 has a length relatively shorter than the width of the side walls 12 so that the center flat portion 21 of the vibrating plate 2 is embedded and fixed in the distal end thereof .
  • the support rod 8 serves to relatively expand the volume of the air layer 11 so as to amplify the spring vibration phenomenon of the air layer, thereby maximizing a sound waves dissipating effect.
  • the rear and side sound absorbing plates 3 and 4 are made of sponge, glass fiber, rock wool, or the like, which absorbs sound waves through porous portions thereof.
  • Fig. 4 is a perspective view illustrating an installed state of the sound absorbing panel according to the present invention.
  • the vibrating plate 2 causes sound waves entering therein to be transmitted in a whirling motion along the swirly membrane members 221. This increases a sound absorbing area, thereby achieving an improved sound absorbing effect .
  • the effect of absorbing and dissipating the sound waves entering in the air layer 11 is maximized by the rear and side sound absorbing plates 3 and 4, which are installed around and behind the air layer 11 and have the porous portions.
  • the one or more passage openings 6 formed at the side walls 12 of the sound absorbing panel enables the sound absorbing panel to obtain an additional sound absorbing effect from other side sound absorbing plates 4 provided in adjacent sound absorbing panels, thereby maximizing a sound absorbing effect.
  • the perforated openings 7 formed at the corners of the vibrating plate 2 communicate with the air layer 11, thereby allowing the sound waves to directly enter the air layer 11.
  • Fig. 5 is a sectional view taken along a line B-B shown in Fig. 4.
  • the side walls 12 of the sound absorbing panel are formed with one or more passage openings 6 as stated above.
  • the sound absorbing panel of the present invention can achieve sound waves absorbing and dissipating effects even through other side sound absorbing plates 4 provided in adjacent sound absorbing panels.
  • the present invention provides a sound absorbing panel, which can achieve an improved sound absorbing effect by utilizing porosity of rear and side sound absorbing plates provided around and behind an air layer as well as membrane vibration of swirly membrane members . Further, according to the present invention, it is possible to increase a sound waves dissipating effect of the side sound absorbing plates by virtue of perforated absorbing holes formed along the front outer edge of the sound absorbing panel . Furthermore, according to the present invention, it is possible to add a sound absorbing effect obtainable from other sound absorbing plates provided in adjacent sound absorbing panels, by virtue of one or more passage openings formed at side walls thereof.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Multimedia (AREA)
  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

Disclosed herein is a sound absorbing panel, which can maximize a sound absorbing effect by utilizing porosity of sound absorbing plates provided around and behind an air layer as well as membrane vibration of swirly membrane members. The sound absorbing panel comprises a frame defining an air layer therein. The frame is open at front and rear sides thereof and closed at four sides thereof by side walls, respectively. The sound absorbing panel further comprises a vibrating plate mounted at the open front side of the frame, side sound absorbing plates provided at inner surfaces of the side walls and having porous portions, respectively, and a rear sound absorbing plate mounted at the open rear side of the frame for absorbing sound waves passed by the air layer.

Description

SOUND-ABSORBING MATERIAL
Technical Field
The present invention relates to a sound absorbing panel, and more particularly to a sound absorbing panel for achieving a sound absorbing effect by using porosity as well as membrane vibration.
Background Art
Sound absorption refers to an action of blocking sounds using certain sound absorbing materials. As widely known, sound absorption is mainly achieved by using glass fiber, rock wool or the like utilizing their porosity, or by a thin plate, cloth, or the like utilizing membrane vibration.
Such sound absorption utilizing porosity or membrane vibration is explained in detail as follows.
As a representative example of sound absorbing materials using porosity, there are glass fiber, rock wool, or the like.
Such glass fiber or rock wool is formed with a plurality of pores (hereinafter, referred as "porous portions") to allow sound waves entering therein to be dissipated.
That is, the glass fiber or rock wool achieves a sound absorbing effect due to the fact that sound waves entering its porous portions are absorbed therein as it continuously collides against the surfaces of the porous portions .
As a representative example of sound absorbing materials using membrane vibration, there are a membrane member, thin cloth, or the like. The membrane member or thin cloth is spaced apart from a wall body to define an air layer therebetween. The air layer serves to vibrate sound waves so as to cause a spring vibration phenomenon. Such vibration dissipates acoustic energy of the sound waves transmitted through the membrane member or thin cloth, thereby achieving a sound absorbing effect .
Currently, various kinds of sound absorbing materials using only one of porosity and membrane vibration as stated above have been known and used, but, until now, there are no sound absorbing materials capable of obtaining a sound absorbing effect by utilizing porosity as well as membrane vibration.
Disclosure of the Invention
Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a sound absorbing panel, which can maximize a sound absorbing effect by utilizing porosity of sound absorbing plates provided around and behind an air layer as well as membrane vibration of swirly membrane members .
It is another object of the present invention to provide a sound absorbing panel, which can increase a sound absorbing effect obtainable from porosity, by virtue of a plurality of perforated absorbing holes formed around the outer edges of the front side of swirly membrane members for allowing sound waves to more effectively enter sound absorbing plates provided around an air layer therethrough.
It is a further object of the present invention to provide a sound absorbing panel, which can add a sound absorbing effect obtainable from other sound absorbing plates provided in adjacent sound absorbing panels, by virtue of one or more passage openings formed at side walls thereof.
It is another object of the present invention to provide a sound absorbing panel, which can increase a sound absorbing effect, by virtue of perforated openings formed at corners of the front side thereof, the perforated openings communicating with an air layer, thereby maximizing the amount of sound waves entering the air layer. It is yet another object of the present invention to provide a sound absorbing panel, which can increase a spring vibration phenomenon of an air layer due to the increased volume of the air layer, thereby maximizing a sound waves dissipating effect . In accordance with the present invention, the above and other objects can be accomplished by the provision of a sound absorbing panel comprising: a frame defining an air layer therein, the frame being open at front and rear sides thereof and closed at four sides thereof by side walls, respectively; a vibrating plate mounted at the open front side of the frame, the vibrating plate including a center flat portion centrally recessed from the vibrating plate toward the air layer, sound absorbing portions having a plurality of swirly membrane members radially extending from respective certain positions around the center flat portion to respective certain positions on an inner periphery of the frame to form a swirl pattern, and slits formed between the swirly membrane members, respectively, so as to allow sound waves to enter the air layer therethrough; side sound absorbing plates provided at inner surfaces of the side walls, respectively, and having porous portions, respectively; and a rear sound absorbing plate mounted at the open rear side of the frame for absorbing sound waves passed by the air layer.
Brief Description of the Drawings
The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which: Fig. 1 is a perspective view illustrating a sound absorbing panel of the present invention;
Fig. 2 is a front view illustrating the sound absorbing panel of the present invention; Fig. 3 is a sectional view taken along a line A-A shown in Fig . 2 ;
Fig. 4 is a perspective view illustrating an installed state of the sound absorbing panel according to the present invention; Fig. 5 is a sectional view taken along a line B-B shown in Fig. 4; and
Fig. 6 is a sectional view illustrating a sound absorbing panel of the prior art .
Best Mode for Carrying Out the Invention
Fig. 1 is a perspective view illustrating a sound absorbing panel of the present invention. Fig. 2 is a front view illustrating the sound absorbing panel of the present invention. Fig. 3 is a sectional view taken along a line A-A shown in Fig. 2.
The sound absorbing panel of the present invention comprises a frame 1 defining an air layer 11 therein, which is open at front and rear sides thereof and closed at four sides thereof by side walls 12, respectively. A vibrating plate 2 is mounted at the open front side of the frame 1. The vibrating plate 2 is configured to induce a membrane vibration phenomenon, thereby achieving a sound absorbing effect. The open rear side of the frame 1 is mounted with a rear sound absorbing plate 3, which serves to absorb sound waves passed by the air layer 11 defined in the frame 1. The side walls 12 of the frame 1 are provided at the inner surfaces thereof with side sound absorbing plates 4, respectively. The side sound absorbing plates 4 have porous portions, respectively. The vibrating plate 2 comprises a center flat portion
21, sound absorbing portions 22, and slits 23. The center flat portion 21 is centrally recessed from the vibrating plate 2 toward the air layer 11. The sound absorbing portions 22 include a plurality of swirly membrane members 221, which radially extend from respective certain positions around the center flat portion 21 to respective certain positions on the inner periphery of the frame 1, thereby forming a swirl pattern. The slits 23 are formed between the swirly membrane members 221, respectively, so as to allow sound waves to enter the air layer 11 therethrough.
One or more perforated absorbing holes 5 are formed around the outer edges of the front side of the swirly membrane members 221. The perforated absorbing holes 5 serve to allow sound waves to directly enter the side sound absorbing plates 4 mounted around the air layer 11. The side walls 12 of the frame 1 are formed with one or more passage openings 6, which serve to add a sound absorbing effect obtainable from other side sound absorbing plates 4 provided in adjacent sound absorbing panels. The vibrating plate 2 is formed at the corners thereof with a plurality of perforated openings 7. The perforated openings 7 communicate with the air layer 11 defined in the frame 1, thereby maximizing a sound absorbing effect of the rear and side sound absorbing plates 3 and 4. The rear sound absorbing plate 3 is centrally provided with a support rod 8 extending inwardly from the inner surface thereof. The support rod 8 has a length relatively shorter than the width of the side walls 12 so that the center flat portion 21 of the vibrating plate 2 is embedded and fixed in the distal end thereof . The support rod 8 serves to relatively expand the volume of the air layer 11 so as to amplify the spring vibration phenomenon of the air layer, thereby maximizing a sound waves dissipating effect.
The rear and side sound absorbing plates 3 and 4 are made of sponge, glass fiber, rock wool, or the like, which absorbs sound waves through porous portions thereof.
The operation of the present invention as stated above is explained as follows .
Fig. 4 is a perspective view illustrating an installed state of the sound absorbing panel according to the present invention. In operation, first, the vibrating plate 2 causes sound waves entering therein to be transmitted in a whirling motion along the swirly membrane members 221. This increases a sound absorbing area, thereby achieving an improved sound absorbing effect .
As the sound waves pass through the slits 23 while being transmitted in a whirling motion, they experience a fine membrane vibration phenomenon, thereby causing a spring vibration phenomenon of the air layer 11. This phenomenon dissipates acoustic energy of the sound waves, thereby achieving a sound absorbing effect.
The effect of absorbing and dissipating the sound waves entering in the air layer 11 is maximized by the rear and side sound absorbing plates 3 and 4, which are installed around and behind the air layer 11 and have the porous portions.
The plurality of perforated absorbing holes 5, formed around the swirly membrane members 221 located at the front side of the sound absorbing panel, guides the sound waves to enter the side sound absorbing plates 4 mounted around the air layer 11 so as to be completely absorbed therein, thereby maximizing a sound waves dissipating effect of the side sound absorbing plates 4.
The one or more passage openings 6 formed at the side walls 12 of the sound absorbing panel enables the sound absorbing panel to obtain an additional sound absorbing effect from other side sound absorbing plates 4 provided in adjacent sound absorbing panels, thereby maximizing a sound absorbing effect.
The perforated openings 7 formed at the corners of the vibrating plate 2 communicate with the air layer 11, thereby allowing the sound waves to directly enter the air layer 11.
This increases the amount of the sound waves entering the air layer 11, thereby improving a sound waves dissipating effect.
Fig. 5 is a sectional view taken along a line B-B shown in Fig. 4. As shown in Fig. 5, the side walls 12 of the sound absorbing panel are formed with one or more passage openings 6 as stated above. As a result, the sound absorbing panel of the present invention can achieve sound waves absorbing and dissipating effects even through other side sound absorbing plates 4 provided in adjacent sound absorbing panels.
Industrial Applicability
As apparent from the above description, the present invention provides a sound absorbing panel, which can achieve an improved sound absorbing effect by utilizing porosity of rear and side sound absorbing plates provided around and behind an air layer as well as membrane vibration of swirly membrane members . Further, according to the present invention, it is possible to increase a sound waves dissipating effect of the side sound absorbing plates by virtue of perforated absorbing holes formed along the front outer edge of the sound absorbing panel . Furthermore, according to the present invention, it is possible to add a sound absorbing effect obtainable from other sound absorbing plates provided in adjacent sound absorbing panels, by virtue of one or more passage openings formed at side walls thereof. Furthermore, according to the present invention, it is possible to increase a sound absorbing effect by forming perforated openings at corners of the front side of the sound absorbing panel, which communicate with the air layer, thereby maximizing the amount of sound waves entering the air layer. Finally, according to the present invention, it is possible to increase a spring vibration phenomenon of the air layer by increasing the volume thereof, thereby maximizing a sound waves dissipating effect .
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims .

Claims

Claims :
1. A sound absorbing panel comprising: a frame defining an air layer therein, the frame being open at front and rear sides thereof and closed at four sides thereof by side walls, respectively; a vibrating plate mounted at the open front side of the frame, the vibrating plate including a center flat portion centrally recessed from the vibrating plate toward the air layer, sound absorbing portions having a plurality of swirly membrane members radially extending from respective certain positions around the center flat portion to respective certain positions on an inner periphery of the frame to form a swirl pattern, and slits formed between the swirly membrane members, respectively, so as to allow sound waves to enter the air layer therethrough; side sound absorbing plates provided at inner surfaces of the side walls, respectively, and having porous portions, respectively; and a rear sound absorbing plate mounted at the open rear side of the frame for absorbing sound waves passed by the air layer .
2. The panel as set forth in claim 1, further comprising one or more perforated absorbing holes formed around outer edges of a front side of the swirly membrane members for allowing the sound waves to directly enter the side sound absorbing plates mounted around the air layer.
3. The panel as set forth in claim 1, further comprising one or more passage openings formed at the side walls.
4. The panel as set forth in claim 1, further comprising a plurality of perforated openings formed at corners of the vibrating plate, the openings communicating with the air layer.
5. The panel as set forth in claim 1, wherein the rear and side sound absorbing plates are made of sponge .
6. The panel as set forth in claim 1 , wherein the rear and side sound absorbing plates are made of glass fiber.
7. The panel as set forth in claim 1, wherein the rear and side sound absorbing plates are made of rock wool.
8. The panel as set forth in claim 1, further comprising a support rod centrally mounted at an inner surface of the rear sound absorbing plate to extend inwardly therefrom, the support rod having a length relatively shorter than a width of the side walls so that the center flat portion of the vibrating plate is embedded and fixed in a distal end of the support rod.
PCT/KR2003/001312 2002-07-03 2003-07-03 Sound-absorbing material Ceased WO2004005636A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003245092A AU2003245092A1 (en) 2002-07-03 2003-07-03 Sound-absorbing material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20-2002-0019997 2002-07-03
KR2020020019997U KR200292648Y1 (en) 2002-07-03 2002-07-03 Sound-absorbing material

Publications (1)

Publication Number Publication Date
WO2004005636A1 true WO2004005636A1 (en) 2004-01-15

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PCT/KR2003/001312 Ceased WO2004005636A1 (en) 2002-07-03 2003-07-03 Sound-absorbing material

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KR (1) KR200292648Y1 (en)
AU (1) AU2003245092A1 (en)
WO (1) WO2004005636A1 (en)

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KR101076381B1 (en) 2008-09-17 2011-10-25 배국순 A preventive material for the floor impact sound
CN105374348A (en) * 2015-10-14 2016-03-02 江苏大学 Low-frequency ultra-wide-band-gap petal-shaped local resonance acoustic meta-material
EP3605526A4 (en) * 2017-03-28 2020-04-08 FUJIFILM Corporation SOUND INSULATING STRUCTURE

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Publication number Priority date Publication date Assignee Title
KR101052719B1 (en) * 2008-09-16 2011-07-29 권유미 Transparent sound absorption and sound insulation with elastic force
WO2011111890A1 (en) * 2010-03-12 2011-09-15 Kuen You Mi Transparent elastic sound absorber and insulator
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KR101076381B1 (en) 2008-09-17 2011-10-25 배국순 A preventive material for the floor impact sound
CN105374348A (en) * 2015-10-14 2016-03-02 江苏大学 Low-frequency ultra-wide-band-gap petal-shaped local resonance acoustic meta-material
CN105374348B (en) * 2015-10-14 2019-02-05 江苏大学 A low-frequency ultra-wide-bandgap lobe-type local resonance acoustic metamaterial
EP3605526A4 (en) * 2017-03-28 2020-04-08 FUJIFILM Corporation SOUND INSULATING STRUCTURE

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