RU2609482C1 - Kochetov multilayer combined structure - Google Patents

Kochetov multilayer combined structure Download PDF

Info

Publication number
RU2609482C1
RU2609482C1 RU2016101171A RU2016101171A RU2609482C1 RU 2609482 C1 RU2609482 C1 RU 2609482C1 RU 2016101171 A RU2016101171 A RU 2016101171A RU 2016101171 A RU2016101171 A RU 2016101171A RU 2609482 C1 RU2609482 C1 RU 2609482C1
Authority
RU
Russia
Prior art keywords
sound
smooth
absorbing
perforated
resonant
Prior art date
Application number
RU2016101171A
Other languages
Russian (ru)
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.)
Filing date
Publication date
Application filed by Олег Савельевич Кочетов filed Critical Олег Савельевич Кочетов
Priority to RU2016101171A priority Critical patent/RU2609482C1/en
Application granted granted Critical
Publication of RU2609482C1 publication Critical patent/RU2609482C1/en

Links

Images

Classifications

    • 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
    • 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
    • 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
    • E04B2001/8461Solid slabs or blocks layered
    • E04B2001/8471Solid slabs or blocks layered with non-planar interior transition surfaces between layers, e.g. faceted, corrugated

Abstract

FIELD: physics, acoustics.
SUBSTANCE: invention relates to industrial acoustics, particularly to multilayer combined acoustic structures. The structure comprises a smooth and a perforated surface, between which there is a combined structure with an irregular shape. The latter is an alternation of sound-absorbing solid areas and hollow areas filled with sound-absorbing material. The solid areas are formed by smooth prismatic surfaces, arranged perpendicular to the smooth and perforated surfaces and are attached to the smooth surface, as well as two irregularly shaped surfaces coupled therewith and inclined relative to the smooth prismatic surfaces. The irregularly shaped surfaces have on one side a smooth surface and on a toothed surface on the other. The vertices of the teeth or protrusions face inside said surfaces and the surfaces themselves are attached on the perforated surface. Noise-absorbing relief elements are attached to the smooth surface. Said noise-absorbing relief elements are sound-absorbing elements in the form of tetrahedrons, which alternate with resonance elements, made in the form of cones with resonant bushings. The outer surfaces of the resonance elements are coated with sound-absorbing conical shells. The material of the resonance elements, made in the form of cones, is a hard sound-reflecting material based on aluminium-containing alloys.
EFFECT: high efficiency of soundproofing and reliability of the structure as a whole.
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 a multilayer combined structure containing smooth and perforated surfaces, between which a combined structure is made, made of complex shape and representing an alternation of sound-absorbing solid sections and hollow sections filled with sound-absorbing material, solid sections, in turn, are formed by smooth prismatic surfaces, located perpendicular to smooth and perforated surfaces and fixed to a smooth surface, as well as two, with knitted with them and inclined, relatively smooth prismatic surfaces, surfaces of complex shape, having on one side a smooth surface and on the other hand a serrated surface, with the tops of the teeth or protrusions facing inward of these surfaces, and the surfaces themselves are fixed on a perforated surface, while sound-absorbing embossed elements are attached to a smooth surface: sound-absorbing elements made in the form of tetrahedra, which alternate with resonant elements made in the form of a cone s with resonant bushings, the outer surfaces of which are covered with sound-absorbing conical shells, while the material of the resonant elements made in the form of cones, used a hard sound-reflecting material based on aluminum-containing alloys, followed by filling them with titanium hydride or air with a density 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 range of 10 ... 20 MPa, for example foam aluminum.
The drawing shows a diagram of a sound-absorbing element.
The sound-absorbing element contains a smooth 1 and perforated 2 surfaces, between which a multilayer combined structure is placed.
The multilayer combined design is made of complex shape and is an alternation of sound-absorbing solid sections 3 and hollow sections 4, filled with sound-absorbing material. The solid sections 3, in turn, are formed by smooth prismatic surfaces 5 located perpendicular to the smooth 1 and perforated 2 surfaces and fixed to the smooth 1 surface, as well as two associated with them and inclined, relatively smooth prismatic surfaces 5, surfaces 6 of complex shape, having on the one hand a smooth surface, and on the other hand a serrated or corrugated or spherical shape (not shown in the drawing) surface, and the tops of the teeth or protrusions puppies inside these surfaces, and the surfaces themselves are fixed on a perforated 2 surface. As sound-absorbing material of sound-absorbing continuous sections 3 and hollow sections 4, rockwool-type mineral wool or URSA-type mineral wool were used. It is possible that the hollow sections 4 are filled with sound-absorbing material in the form of a foamed polymer, for example polyethylene or polypropylene, or construction foam. Moreover, the inner surface of the perforated surface 2, facing the multilayer combined structure, is lined with an acoustically transparent material, such as fiberglass type EZ-100 or polymer type "Poviden." The perforation coefficient of the perforated surface 2 is taken to be equal to or more than 0.25.
Sound-absorbing embossed elements are attached to a smooth surface 1: sound-absorbing elements 7 made in the form of tetrahedrons that alternate with resonant elements 8 made in the form of cones with resonant sleeves 9, the outer surfaces of which are covered with sound-absorbing conical shells 10. As sound-absorbing material of sound-absorbing elements 7 made in the form of tetrahedra, basalt cotton wool of type P-75, or glass wool with glass fiber lining, is used.
As the material of the resonant elements 8, made in the form of cones, a hard sound-reflecting 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 3 with the following strength properties: strength on compression within 5 ... 10 MPa, bending strength within 10 ... 20 MPa, for example, foam aluminum.
It is possible that as the material of the resonant elements 8 made in the form of cones, a rigid vibration damping material is used, for example, plastic compound of the type “Agate”, “Anti-vibration”, “Shvim”.
Sound-absorbing element operates as follows.
Sound energy is weakened by going through a multilayer combined structure made of complex shape and representing an alternation of sound-absorbing solid sections 3 and hollow sections 4 filled with sound-absorbing material, and the sound pressure levels in the room or the surrounding space are reduced, and the sound energy is converted into heat ( dissipation, energy dissipation), i.e. in the pores of the sound absorber, which are the Helmholtz resonator model, there are energy losses due to friction, which oscillates with the frequency of excitation of the mass of air in the resonator neck against the walls of the neck itself, which has the form of a branched network of sound absorber micropores.

Claims (1)

  1. A multilayer combined structure containing smooth and perforated surfaces, between which a combined structure made of complex shape is placed, characterized in that it represents an alternation of sound-absorbing solid sections and hollow sections filled with sound-absorbing material, solid sections, in turn, are formed by smooth prismatic surfaces, perpendicular to smooth and perforated surfaces, and fixed to a smooth surface, as well as two bonds with them and inclined, relatively smooth prismatic surfaces, surfaces of complex shape, having on one side a smooth surface and on the other hand a serrated surface, the tops of the teeth or protrusions facing inward of these surfaces, and the surfaces themselves attached to a perforated surface, while sound-absorbing embossed elements are attached to a smooth surface: sound-absorbing elements made in the form of tetrahedrons, which alternate with resonant elements made in the form of cones resonant sleeves, the outer surfaces of which are covered with sound-absorbing conical shells, while the material of the resonant elements made in the form of cones is a rigid sound-reflecting material based on aluminum-containing alloys, followed by filling them with titanium hydride or air with a density in the range 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 range of 10 ... 20 MPa, for example foamed aluminum, or rigid vibration damping material, example plastic compounds like "Agate", "Anti-Vibrate", "Shvim".
RU2016101171A 2016-01-18 2016-01-18 Kochetov multilayer combined structure RU2609482C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2016101171A RU2609482C1 (en) 2016-01-18 2016-01-18 Kochetov multilayer combined structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2016101171A RU2609482C1 (en) 2016-01-18 2016-01-18 Kochetov multilayer combined structure

Publications (1)

Publication Number Publication Date
RU2609482C1 true RU2609482C1 (en) 2017-02-02

Family

ID=58457624

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2016101171A RU2609482C1 (en) 2016-01-18 2016-01-18 Kochetov multilayer combined structure

Country Status (1)

Country Link
RU (1) RU2609482C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2663976C1 (en) * 2017-11-10 2018-08-14 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
RU2059772C1 (en) * 1994-07-07 1996-05-10 Московская государственная текстильная академия им.А.Н.Косыгина Acoustic panel
US7762375B2 (en) * 2008-04-09 2010-07-27 Toyota Boshoku Kabushiki Kaisha Soundproofing material
RU2524730C1 (en) * 2013-07-22 2014-08-10 Олег Савельевич Кочетов Acoustic finishing of production premises
RU2543826C2 (en) * 2013-07-22 2015-03-10 Олег Савельевич Кочетов Shop acoustic finishing

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
RU2059772C1 (en) * 1994-07-07 1996-05-10 Московская государственная текстильная академия им.А.Н.Косыгина Acoustic panel
US7762375B2 (en) * 2008-04-09 2010-07-27 Toyota Boshoku Kabushiki Kaisha Soundproofing material
RU2524730C1 (en) * 2013-07-22 2014-08-10 Олег Савельевич Кочетов Acoustic finishing of production premises
RU2543826C2 (en) * 2013-07-22 2015-03-10 Олег Савельевич Кочетов Shop acoustic finishing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2663976C1 (en) * 2017-11-10 2018-08-14 Олег Савельевич Кочетов Sound absorbing element

Similar Documents

Publication Publication Date Title
RU2613061C1 (en) Sound-absorbing element of kochetov with resonant inserts
RU2532513C1 (en) Sound absorbing element (versions)
RU2583448C2 (en) Kochetov sound-absorbing element
RU2607484C1 (en) Noise absorbing wall panel
RU2611649C1 (en) Sound-absorbing element
RU2609482C1 (en) Kochetov multilayer combined structure
RU2648127C1 (en) Sound-absorbing structure with resonant inserts
RU2578227C1 (en) Sound absorbing element
RU2656437C1 (en) Sound absorbing element
RU2645365C1 (en) Wall resonance panel
RU2645381C1 (en) Sound absorption element with resonant inserts
RU2613992C1 (en) Kochetov wall resonant panel
RU2663976C1 (en) Sound absorbing element
RU2655109C1 (en) Sound absorbing element
RU2626471C1 (en) Kochetov's sound absorbing element
RU2646257C1 (en) Sound absorption element with resonant inserts
RU2588006C1 (en) Sound-absorbing composite structure
RU2648095C1 (en) Single-piece sound absorber
RU2648100C1 (en) Sound absorption element with resonant inserts
RU2598253C1 (en) Combined kochetov sound-absorbing structure
RU2598252C1 (en) Kochetov sound-absorbing structure
RU2598249C1 (en) Sound absorbing structure
RU2622936C1 (en) Acoustic construction for industrial facilities
RU2648088C1 (en) Sound absorption element with resonant inserts
RU2651567C1 (en) Symmetrical sound-absorbing element