SOUNDPROOFING CLADDING OF TECHNICAL ROOM Russian patent published in 2016 - IPC E04B1/82 G10K11/00 

FIELD: construction.

SUBSTANCE: soundproofing cladding of a technical room is represented by a soundproofing front flat-sheet and/or soundproofing non-flat formed panel, spaced mounted with reference to an oppositely located bearing wall (ceiling) structure of the technical room, with the formation of respective closed air cavities. To the named soundproofing front panels and/or the bearing wall (ceiling) structures of the technical room in a respective manner quarter wave acoustic R' resonators and/or half-wave acoustic resonators R" are fixed, which are frequency adjusted and temperature adapted for the suppression of acoustic resonances which are formed in the air cavities formed in their own cross and longitudinal acoustic modes. The similar function of suppression of amplitude values of the acoustic resonances formed in the air cavities between the oppositely located walls of the soundproofing front panel and the bearing wall (ceiling) structure of the technical room is performed by isolated briquetted sound-absorbing modules which are appropriately placed in pre-set spatial zones of the air cavities. Basic constructive elements of the soundproofing cladding - soundproofing front panels (flat-sheet and/or non-flat formed), acoustic resonators (quarter wave - R', half-wave - R"), the isolated briquetted sound-absorbing modules containing in compositions of formed nodal structures can be added by elements of their assembly fixture - mechanical fasteners, adhesive substances (sticky glue, thermoactive substances), and also they are in addition fitted with respective sealing soundproofing elements, anti-vibration bearing elements, thermoinsulating elements, dissipative soundproofing elements, coating sound transparent layers of film foil, fabric (nonwoven) materials. To provide efficient functioning of the acoustic resonators R' and R" in the expanded (changing) frequency range caused, inter alia, by the change of temperature of the environment of propagation of sound waves (air), the composition of their structures is integrated by dissipative sound damping elements of various types - perforation holes in walls of tubular parts, and/or porous airblown plugs placed in the cavities of the tubular parts, and/or the coating sound-transparent layers of materials mounted on throat parts of the acoustic resonators and/or on punched sections of the tubular parts of the acoustic resonators. To provide efficient functioning of the isolated briquetted sound-absorbing modules by the accompanying reduction of volume of the used porous sound-absorbing substance (isolated shredded fragmented sound-absorbing elements) their pre-set spatial placement in an air cavity under the soundproofing cladding envisions the installation in the peripheral angular and/or end sections formed by mounting interfaces of the walls of the front soundproofing panels with the respective counter surfaces of bearing elements of the technical room (walls, ceiling, internal partition). Various combinations and types of constructional materials are given, effective ranges of the change of their structural compositions and physical parameters favouring to solving the target task of the development of the technical device "Soundproofing Cladding of Technical Room" are established.

EFFECT: invention allows improving the noise-reducing efficiency of the technical device which is performed in the expanded frequency range of the sound spectrum.

25 cl, 31 dwg