SU551430A1 - Soundproofing partition - Google Patents

Description

(54) SOUND ISOLATING PARTITION

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The invention relates to construction, in particular to sound-insulating laminated panels, can be used in housing and commercial construction. 5

The soundproofing partition, including the outer layers and the air prog interlock, is known in which it is placed freely (hanging canvas, made of felt, Odyako known hovstrukshg does not provide the effect of faint sound suppression in a wide frequency range .. Since the diaphragm is not a light It is not a rigid construction, it does not have any resonant frequencies, at which the maximum amplitude of mixing is 15, due to the fact that the dissipation loss in it is insignificant. In addition, due to There is no effective sound absorber in the air gap h, it can have 20 distinct effects, which also significantly degrades the sound insulation properties of the partition.

Known isozogafuyusha layered partition, including the outer layers and 26

a stuffy gap in which the diaphragm is located. The diaphragm is made in the form of a grid with heavy material deposited on it, for example, cement mortar. However, such baffles provide noise suppression in a narrow frequency range and therefore are ineffective in their sound-absorbing properties.

The purpose of the invention is to improve the sound insulation capacity of the partition by providing the ability to tune and silence frequencies.

This is achieved by the fact that the diaphragm is made in the input of a set of separate 11x bands of elastic sheet material resonating at muffled frequencies and v covered with a sound absorber and a damper material with the diaphragm located offset to one of the enclosing layers.

FIG. 1 shows a longitudinal section of the partition; va of FIG. 2 - a popular incision of the partition.

Claims (1)

Barriers 1 include fenced enclosures 2, there is an air gap 3 between them. In the air gap 3 there is a diaphragm 4, consisting of about 5 strips 5. May tiki. The lining elements 7 are made of two channels and are connected to vertical posts 8. The enclosing layers 2 are attached to vertical stands 8 and channels. The diaphragm 4 is clamped between the upper channels of the bracing element 7 through the washers 9, allowing free diaphragm oscillations between the legs 8, Diaphragm 4 can be made with such a material as plywood, wood .10-chipboard, plastic, etc. The thickness and dimensions of the bands 5, of which diaphragm 4 is stamped, are chosen in accordance with the spectrum of the frequencies to be muffled. The strips 5 can be attached to the uprights 8 with the aid of a lining 10 and bolts 11. Sound waves entering the air gap 3 partitions 1 through one of the enclosing layers 2 cause vibrations of the strips 5 of the diaphragm 4. The width, thickness and material of the strips 5 are selected so that that each band turns out to be tuned to its frequency from the frequency spectrum, which requires the most sound insulation. Due to this, each band at its own frequencies oscillates with a maximum amplitude. In this case, sound-absorbing material 6, glued to oscillating strips 5, will damp these vibrations, as a result of which frictional sound energy losses will increase dramatically. In addition, due to the intensive movement of the sound-absorbing layer, the sound absorption efficiency is also enhanced. By introducing intermediate fixings of the strips to the posts 8 according to their height, it is possible to additionally change the frequency range of the oscillation band 5. The partition 1 includes strips 5 made of plywood 5-6 mm. The bands correspond to the frequencies of 1OO, 125, 160 and 20H Hz and are 30 cm, 25 cm, 23 cm and 20 cm, respectively, with a partition height of 255 cm. Since the whole partition has a width of 250 cm, there will be several such sets of bands. Placing the diaphragm 4 with an offset to one of the enclosing layers 2 of the partition 1 at a distance of not 1 O mm from it excludes the possibility of resonances in the air gaps 3 and provides for an increase in the sound insulation ability of the partition. At the indicated frequencies, the soundproofing capacity of the partition increases by 5 dB compared to a layered partition of equal weight without an elastic diaphragm. Claims 1. A sound insulation wall comprising enclosing layers and a diaphragm installed with a gap between them, 4TOjC by improving sound-insulating ability due to the possibility of tuning to muffled frequencies, the diaphragm is made as a set of separate bands from an elastic sheet material resonating on the frequencies to be covered with sound-absorbing and vibration-damping material, while the diaphragm is located offset to one of the enclosing layers. XX / X Xv XX / XXv X X XXXXXXX / XXX X Tol S s r L  Igo ol T