RU2607484C1 - Noise absorbing wall panel - Google Patents

Noise absorbing wall panel Download PDF

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Publication number
RU2607484C1
RU2607484C1 RU2016101162A RU2016101162A RU2607484C1 RU 2607484 C1 RU2607484 C1 RU 2607484C1 RU 2016101162 A RU2016101162 A RU 2016101162A RU 2016101162 A RU2016101162 A RU 2016101162A RU 2607484 C1 RU2607484 C1 RU 2607484C1
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RU
Russia
Prior art keywords
sound
absorbing
perforated
prismatic
smooth
Prior art date
Application number
RU2016101162A
Other languages
Russian (ru)
Inventor
Мария Олеговна Стареева
Original Assignee
Мария Олеговна Стареева
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 Мария Олеговна Стареева filed Critical Мария Олеговна Стареева
Priority to RU2016101162A priority Critical patent/RU2607484C1/en
Application granted granted Critical
Publication of RU2607484C1 publication Critical patent/RU2607484C1/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
    • 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
    • E04B2001/8471Solid slabs or blocks layered with non-planar interior transition surfaces between layers, e.g. faceted, corrugated
    • 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, specifically to noise absorbing wall panel. Noise absorbing wall panel has smooth and perforated surfaces, between which complex shaped combined sound-absorbing layer is arranged. Latter represents alternating solid sections and hollow sections. Framework is made of rigid sound-absorbing material. Hollow sections are formed by prismatic surfaces, having in cross section, parallel to drawing plane, parallelogram shape, which inner surfaces have toothed texture. At that, teeth tops face inside prismatic surfaces. Prismatic surfaces ribs are secured on smooth and perforated surfaces, respectively. Cavities, formed by smooth and perforated surfaces, between which complex shaped combined sound-absorbing layer is located, are filled with sound absorbing material from mineral wool on basalt base. Perforated surface inner surface, facing sound-absorbing material, is lined with acoustically transparent material, for example, glass fabric. Cavities of hollow sections formed by prismatic surfaces, are filled with foamed polyethylene or polypropylene.
EFFECT: higher efficiency of sound absorption and reliability of design in general.
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 wall sound-absorbing panel containing smooth and perforated surfaces, between which a combined sound-absorbing layer of complex shape is placed, which is an alternation of solid sections and hollow sections, the frame of which is made of hard sound-absorbing material based on aluminum-containing alloys, followed by filling them with hydride titanium or air with a density in the range of 0.5 ... 0.9 kg / m 3 with the following strength properties: compressive strength in the range of 5 ... 10 MPa, etc bending accuracy within 10 ... 20 MPa, for example, foam aluminum, hollow sections are formed by prismatic surfaces having a section parallel to the plane of the drawing, a parallelogram shape, the internal surfaces of which have a toothed structure, with the tops of the teeth facing the inside of the prismatic surfaces and the edges of the prismatic surfaces mounted respectively on smooth and perforated surfaces, and the cavity formed by smooth and perforated surfaces, between which is combined this sound-absorbing layer of complex shape, filled with soft sound-absorbing material from rockwool basalt-based mineral wool or URSA, or P-75 basalt wool, or glass wool lined with glass wool, with the inner surface of the perforated surface facing to the side sound-absorbing material, lined with an acoustically transparent material, such as fiberglass type EZ-100 or polymer type "Poviden", and the cavity of the hollow sections formed by prismatic surfaces are filled with nennym polymer such as polyethylene or polypropylene.
The drawing shows a diagram of a wall sound-absorbing panel.
The wall sound-absorbing panel contains a smooth 1 and perforated 2 surfaces, between which there is a combined sound-absorbing layer of complex shape, which is an alternation of solid sections 3 and hollow sections 5, the frame of which is made of rigid sound-absorbing material based on aluminum-containing alloys, followed by filling them with titanium hydride or air a density in the range of 0.5 ... 0.9 kg / m 3 with the following strength properties: compressive strength in the range of 5 ... 10 MPa, the flexural strength in pre elah 10 ... 20 MPa, for example aluminum foam. Moreover, the hollow sections 5 are formed by prismatic surfaces having a parallelogram in cross section parallel to the drawing plane, the inner surfaces of which have a toothed 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, and the edges of the prismatic surfaces are fixed respectively on a smooth 1 and perforated 2 surfaces. Cavities 4, formed by smooth 1 and perforated 2 surfaces, between which a combined sound-absorbing layer of complex shape is located, are filled with soft sound-absorbing material from mineral wool based on Rockwool, or URSA, or P-75 basalt wool, or glass wool with fiberglass lining, while the inner surface of the perforated surface 2, facing the sound-absorbing material, is lined with an acoustically transparent material, for example fiberglass type EZ-100 or polymer t IPA "Seen".
The cavities 7 of the hollow sections 5 formed by the prismatic surfaces are filled with foamed polymer, polyethylene or polypropylene.
This makes it possible to increase the reliability of the structure as a whole by preserving the shape of the cavities 7 under random or periodic impacts on the wall sound-absorbing panel by various factors of mechanical impact - falling objects, inaccurate movement of workshop vehicles, inaccurate movements of operators.
Wall sound-absorbing panel operates as follows.
Sound energy, passing through a layer of perforated surface 2 and a combined sound-absorbing layer of complex shape, decreases, since the transition of sound energy into thermal energy (dissipation, energy dissipation) occurs, 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 wall sound-absorbing panel containing smooth and perforated surfaces, between which a combined sound-absorbing layer of complex shape is placed, which is an alternation of solid sections and hollow sections, the frame of which is made of hard sound-absorbing material based on aluminum-containing alloys, followed by filling them with titanium hydride or air with a density of within 0.5 ... 0.9 kg / m 3 with the following strength properties: compressive strength in the range of 5 ... 10 MPa, bending strength in the limit x 10 ... 20 MPa, for example foamed aluminum, characterized in that 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, with the tops of the teeth facing the inside of the prismatic surfaces and the edges of the prismatic surfaces fixed respectively on smooth and perforated surfaces, and the cavity formed by smooth and perforated surfaces, between which is combined the sound-absorbing layer of complex shape, filled with soft sound-absorbing material from rockwool basalt-based mineral wool, or URSA, or P-75 basalt wool, or glass wool lined with glass wool, with the inner surface of the perforated surface facing to the side sound-absorbing material, lined with an acoustically transparent material, such as fiberglass type EZ-100 or polymer type "Poviden", and the cavity of the hollow sections formed by prismatic surfaces are filled with foam th polyethylene or polypropylene.
RU2016101162A 2016-01-18 2016-01-18 Noise absorbing wall panel RU2607484C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2016101162A RU2607484C1 (en) 2016-01-18 2016-01-18 Noise absorbing wall panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2016101162A RU2607484C1 (en) 2016-01-18 2016-01-18 Noise absorbing wall panel

Publications (1)

Publication Number Publication Date
RU2607484C1 true RU2607484C1 (en) 2017-01-10

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RU2016101162A RU2607484C1 (en) 2016-01-18 2016-01-18 Noise absorbing wall panel

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Cited By (4)

* 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
RU2651995C1 (en) * 2017-03-13 2018-04-24 Олег Савельевич Кочетов Acoustic screen
RU2652152C1 (en) * 2017-03-14 2018-04-25 Олег Савельевич Кочетов Method of vibroacoustic tests
RU2655109C1 (en) * 2017-03-03 2018-05-23 Олег Савельевич Кочетов Sound absorbing element

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU348755A1 (en) * Научно исследовательский автомобильный , автомоторный институт
US3507355A (en) * 1969-05-22 1970-04-21 Rohr Corp Multi-layer face material for sound absorptive duct lining material
US20090255755A1 (en) * 2008-04-09 2009-10-15 Toyota Boshoku Kabushiki Kaisha Soundproofing material
RU2463412C2 (en) * 2010-08-20 2012-10-10 Олег Савельевич Кочетов Sound-absorbing structure of production room
RU2524730C1 (en) * 2013-07-22 2014-08-10 Олег Савельевич Кочетов Acoustic finishing of production premises
RU2532513C1 (en) * 2013-07-22 2014-11-10 Олег Савельевич Кочетов Sound absorbing element (versions)

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU348755A1 (en) * Научно исследовательский автомобильный , автомоторный институт
US3507355A (en) * 1969-05-22 1970-04-21 Rohr Corp Multi-layer face material for sound absorptive duct lining material
US20090255755A1 (en) * 2008-04-09 2009-10-15 Toyota Boshoku Kabushiki Kaisha Soundproofing material
RU2463412C2 (en) * 2010-08-20 2012-10-10 Олег Савельевич Кочетов Sound-absorbing structure of production room
RU2524730C1 (en) * 2013-07-22 2014-08-10 Олег Савельевич Кочетов Acoustic finishing of production premises
RU2532513C1 (en) * 2013-07-22 2014-11-10 Олег Савельевич Кочетов Sound absorbing element (versions)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2655109C1 (en) * 2017-03-03 2018-05-23 Олег Савельевич Кочетов Sound absorbing element
RU2651995C1 (en) * 2017-03-13 2018-04-24 Олег Савельевич Кочетов Acoustic screen
RU2646251C1 (en) * 2017-03-14 2018-03-02 Олег Савельевич Кочетов Acoustic screen
RU2652152C1 (en) * 2017-03-14 2018-04-25 Олег Савельевич Кочетов Method of vibroacoustic tests

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