RU2583448C2 - Kochetov sound-absorbing element - Google Patents

Kochetov sound-absorbing element Download PDF

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Publication number
RU2583448C2
RU2583448C2 RU2014137352/03A RU2014137352A RU2583448C2 RU 2583448 C2 RU2583448 C2 RU 2583448C2 RU 2014137352/03 A RU2014137352/03 A RU 2014137352/03A RU 2014137352 A RU2014137352 A RU 2014137352A RU 2583448 C2 RU2583448 C2 RU 2583448C2
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RU
Russia
Prior art keywords
sound
absorbing
perforated
prismatic
smooth
Prior art date
Application number
RU2014137352/03A
Other languages
Russian (ru)
Other versions
RU2014137352A (en
Inventor
Олег Савельевич Кочетов
Original Assignee
Олег Савельевич Кочетов
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.)
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Publication date
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Priority to RU2014137352/03A priority Critical patent/RU2583448C2/en
Publication of RU2014137352A publication Critical patent/RU2014137352A/en
Application granted granted Critical
Publication of RU2583448C2 publication Critical patent/RU2583448C2/en

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82Heat, 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
    • E04B1/84Sound-absorbing elements
    • E04B1/8409Sound-absorbing elements sheet-shaped
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods 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
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162Selection of materials
    • G10K11/168Plural layers of different materials, e.g. sandwiches
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82Heat, 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
    • E04B1/84Sound-absorbing elements
    • E04B2001/8457Solid slabs or blocks
    • E04B2001/8461Solid slabs or blocks layered
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82Heat, 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
    • E04B1/84Sound-absorbing elements
    • E04B2001/8457Solid slabs or blocks
    • E04B2001/8476Solid slabs or blocks with acoustical cavities, with or without acoustical filling

Abstract

FIELD: acoustics.
SUBSTANCE: invention relates to industrial acoustics and can be used for machine drive noise reduction, lining of manufacturing facilities and in other sound-absorbing structures. Sound absorbing element comprises smooth and perforated surfaces between which multilayer sound absorbing structure is located. Between smooth and perforated surfaces there is layer of sound-absorbing material of complex shape, which represents alternating solid and hollow sections. Hollow sections are formed by prismatic surfaces with cross-sections parallel to plane of drawing, parallelogram shape, which inner surface have toothed or wavy structure, or surface with spherical surfaces. Teeth tops face inside prismatic surfaces. Ribs of prismatic surfaces are secured on smooth and perforated walls respectfully. Cavity of hollow sections are filled with construction and mounting foam. Material of perforated surface is made of solid, decorative damping materials, for example, elastrons "Agat", "Antivibrat", "Schwim". Inner surface of perforated surface facing sound-absorbing structure is lined with acoustically transparent material, for example, glass fabric EZ-100 or polymer of "Poviden" type.
EFFECT: invention allows to improve efficiency of sound absorption and reliability of the structure on the whole.
1 cl, 1 dwg

Description

The invention relates to industrial acoustics and can be used to reduce the noise of the drive machines, facing industrial premises and other sound-absorbing structures.
The closest technical solution to the technical nature and the achieved result is a sound-absorbing element used as a facing of industrial premises, known from the RF patent No. 2463412 (prototype).
The disadvantage of the technical solution adopted as a prototype is the relatively low noise reduction due to the presence of voids between the layers, where there is no sound absorption between the layers of the sound absorber.
The technical result is an increase in the efficiency of sound attenuation and the reliability of the structure as a whole.
This is achieved by the fact that in the sound-absorbing element containing a smooth and perforated surface, between which is placed a multilayer sound-absorbing structure, which is made of complex shape, which is an alternation of solid sections and hollow sections, and the hollow sections are formed by prismatic surfaces having a section parallel to the plane of the drawing , the shape of a parallelogram, the inner surfaces of which have a toothed structure, or wavy, or a surface with spherical surfaces spikes (not shown in the drawing), with the tops of the teeth facing the inside of the prismatic surfaces, while the ribs of the prismatic surfaces are fixed respectively to the smooth and perforated walls.
The drawing shows a diagram of a sound-absorbing element.
The sound-absorbing element contains a smooth 1 and perforated 2 surfaces, between which there is a layer of sound-absorbing material of complex shape, which is an alternation of solid sections 3 and hollow sections 5, and the hollow sections 7 are formed by prismatic surfaces having a parallelogram shape in cross section parallel to the drawing plane, internal the surfaces of which have a gear structure 6, or wavy, or a surface with spherical surfaces (not shown in the drawing). In this case, the tops of the teeth face the inside of the prismatic surfaces, while the edges of the prismatic surfaces are fixed respectively on a smooth 1 and perforated 2 walls. The cavities of the hollow sections 7 are filled with construction foam.
As a sound-absorbing material of the first, more rigid layer, a material based on aluminum-containing alloys was used, followed by filling them with titanium hydride or air with a density in the range of 0.5 ... 0.9 kg / m with the following strength properties: compressive strength in the range of 5 ... 10 MPa, bending strength in the range of 10 ... 20 MPa, for example foam aluminum.
Rockwool type mineral wool or URSA type mineral wool or P-75 type basalt wool or glass wool lined with glass wool or foamed polymer, such as polyethylene or polypropylene.
The material of the perforated surface is made of solid, decorative vibration-damping materials, for example, agate, antivibrate, and shvim plastic compounds, and the inner surface of the perforated surface facing the sound-absorbing structure is lined with an acoustically transparent material, such as fiberglass type EZ-100 or "Poviden" type polymer.
Sound-absorbing element operates as follows.
Sound energy, passing through a layer of perforated surface 2 and a third layer 8 of a sound-absorbing element made of foamed sound-absorbing material, falls on an intermittent sound-absorbing layer 4 located at the focus of a continuous profiled layer 3, where the primary dissipation of sound energy occurs. Then, the sound energy enters the continuous profiled layer 3 of sound-absorbing material formed by spherical surfaces forming a solid dome-shaped profile, and focusing the reflected sound onto a soft sound absorber 4. Here, the sound energy is converted into heat (dissipation, energy dissipation), i.e. in the pores of the sound absorber, representing the Helmholtz resonator model, there are energy losses due to friction, which fluctuates with the excitation frequency of the mass of air in the mouth of the resonator, against the wall of the neck itself, which has the form of a branched network of micropores of the sound absorber. The perforation coefficient of the perforated surface 2 is taken to be equal to or more than 0.25.

Claims (1)

  1. A sound-absorbing element containing a smooth and perforated surface, between which a multilayer sound-absorbing structure is placed, characterized in that it contains a smooth and perforated surface, between which a layer of sound-absorbing material of complex shape is represented, which is an alternation of solid sections and hollow sections, with hollow sections formed by prismatic surfaces having a section parallel to the plane of the drawing, the shape of a parallelogram, the inner surfaces of which The horn has a toothed structure, or corrugated, or a surface with spherical surfaces, with the tops of the teeth facing the inside of the prismatic surfaces, while the edges of the prismatic surfaces are fixed respectively on smooth and perforated walls, while the cavities of the hollow sections are filled with construction foam, and the material of the perforated surface made of solid, decorative vibration damping materials, such as plastic compounds such as "Agate", "Anti-Vibrate", "Shvim", and the inner surface of the per orirovannoy surface facing toward the sound absorbing construction is lined with an acoustically transparent material, such as fiberglass-type EG-100 or a polymer type "Poviden".
RU2014137352/03A 2014-09-16 2014-09-16 Kochetov sound-absorbing element RU2583448C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2014137352/03A RU2583448C2 (en) 2014-09-16 2014-09-16 Kochetov sound-absorbing element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2014137352/03A RU2583448C2 (en) 2014-09-16 2014-09-16 Kochetov sound-absorbing element

Publications (2)

Publication Number Publication Date
RU2014137352A RU2014137352A (en) 2016-04-10
RU2583448C2 true RU2583448C2 (en) 2016-05-10

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RU2014137352/03A RU2583448C2 (en) 2014-09-16 2014-09-16 Kochetov sound-absorbing element

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2646251C1 (en) * 2017-03-14 2018-03-02 Олег Савельевич Кочетов Acoustic screen
RU2646241C1 (en) * 2017-03-17 2018-03-02 Олег Савельевич Кочетов Sound-absorbing element of combined type
RU2648127C1 (en) * 2017-03-07 2018-03-22 Олег Савельевич Кочетов Sound-absorbing structure with resonant inserts
RU2648088C1 (en) * 2017-03-17 2018-03-22 Олег Савельевич Кочетов Sound absorption element with resonant inserts
RU2651084C1 (en) * 2017-03-14 2018-04-18 Олег Савельевич Кочетов Acoustic screen for self-twisting spinning machines
RU2651567C1 (en) * 2017-03-03 2018-04-20 Олег Савельевич Кочетов Symmetrical sound-absorbing element
RU2651995C1 (en) * 2017-03-13 2018-04-24 Олег Савельевич Кочетов Acoustic screen
RU2656569C1 (en) * 2017-03-16 2018-06-05 Олег Савельевич Кочетов Device for pneumatic entanglement of filament yarns

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2993U1 (en) * 1995-05-18 1996-10-16 Московская государственная текстильная академия им.А.Н.Косыгина Noise-absorbing panel "impulse"
DE102004037260A1 (en) * 2004-07-31 2006-03-23 Südluft Systemtechnik GmbH & Co. KG Sound-absorbing or sound-damping cassette structure and a method for cleaning such
RU2391468C2 (en) * 2005-01-27 2010-06-10 Штефан КРЕСТЕЛЬ Assembly construction element in form of beam, and also method and device for manufacturing of this construction element
RU2471935C1 (en) * 2011-09-20 2013-01-10 Олег Савельевич Кочетов Comfort structure of room

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2993U1 (en) * 1995-05-18 1996-10-16 Московская государственная текстильная академия им.А.Н.Косыгина Noise-absorbing panel "impulse"
DE102004037260A1 (en) * 2004-07-31 2006-03-23 Südluft Systemtechnik GmbH & Co. KG Sound-absorbing or sound-damping cassette structure and a method for cleaning such
RU2391468C2 (en) * 2005-01-27 2010-06-10 Штефан КРЕСТЕЛЬ Assembly construction element in form of beam, and also method and device for manufacturing of this construction element
RU2471935C1 (en) * 2011-09-20 2013-01-10 Олег Савельевич Кочетов Comfort structure of room

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2651567C1 (en) * 2017-03-03 2018-04-20 Олег Савельевич Кочетов Symmetrical sound-absorbing element
RU2648127C1 (en) * 2017-03-07 2018-03-22 Олег Савельевич Кочетов Sound-absorbing structure with resonant inserts
RU2651995C1 (en) * 2017-03-13 2018-04-24 Олег Савельевич Кочетов Acoustic screen
RU2651084C1 (en) * 2017-03-14 2018-04-18 Олег Савельевич Кочетов Acoustic screen for self-twisting spinning machines
RU2646251C1 (en) * 2017-03-14 2018-03-02 Олег Савельевич Кочетов Acoustic screen
RU2656569C1 (en) * 2017-03-16 2018-06-05 Олег Савельевич Кочетов Device for pneumatic entanglement of filament yarns
RU2648088C1 (en) * 2017-03-17 2018-03-22 Олег Савельевич Кочетов Sound absorption element with resonant inserts
RU2646241C1 (en) * 2017-03-17 2018-03-02 Олег Савельевич Кочетов Sound-absorbing element of combined type

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