RU4325U1 - NOISE-PROTECTED VENTILATION DEVICE - Google Patents

Abstract

Soundproof ventilation device, including a frame, between the vertical bars of which a perforated sound-absorbing cassette is movably mounted, mounted on the inner cover, and air ducts, characterized in that the sound-absorbing cassette has perforation along the side and front surfaces, is filled with sound-absorbing material and is equipped with additional side walls forming with air ducts, and with an internal cover - outlet openings, while outside the opposite of the cartridge on the bars of the frame mounted wounds forming additional holes cassette sidewalls communicating with the ducts.

Description

W USEFUL VENTILATION DEVICE

The invention relates to the construction and for the structural implementation of ventilation devices installed in the enclosing structures of residential and public buildings with an increased level of external noise, for example, near transport highways and airways.

Known building element with a ventilation cavity installed in the enclosure of the building and comprising a housing with inlet and outlet openings and a silencing cassette, one of the sides of which is tightly adjacent to the side wall of the housing, forming a ventilation channel, and the silencing cassette has the ability to reciprocate along longitudinal axis of the hull (USSR AS No. 1260477, class E04C 2/44, 198bg.). The disadvantages of such a device are the narrowing of the light opening, the complexity of the implementation and insufficient sound insulation. .

The closest in technical essence and the achieved result is a noise-proof ventilation device, including a housing with an inlet and a ventilation duct, in communication with an inter-window cavity, a sound-absorbing cassette with resonant chambers and perforation on one of the side walls. In addition, the cassette can be installed with the formation of an additional ventilation duct, or duct. (AS USSR No. 1796750, CL EV 1/82, 1993). The disadvantages of this device include the narrowing of the light opening due to the width of the sound-absorbing device and its insufficient sound insulation.

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МШ --04 -2/44, ЕВВ 5/20 Е-04В 1/82, a perforated sound-absorbing cassette is mounted on the inner cover, and the air ducts are designed so that the sound-absorbing cassette has perforation along the side and front surfaces, is filled with sound-absorbing material and is equipped with additional side walls, forming air ducts with the cartridge, and with the inner cover - outlet openings, while on the outside opposite the cartridge on the frame bars a screen is mounted forming the inlet openings with the additional side walls of the cartridge together schiesya with air. This embodiment of the device increases the lengths / cassettes while reducing the width of the ventilation device, which allows to increase the light opening and improve sound insulation. Sound insulation is also enhanced by increasing the effective sound absorption surface (additional perforation) and using an effective sound absorber instead of resonant chambers.

In FIG. I shows a general view of the device from the premises; in Fig.2 - seAyu on AA of Fig.1 in the closed position of the device; in FIG. 3 - the same in ventilation mode; figure 4 is a section along BB of figure 1 in the closed position of the device,

Soundproof ventilation device includes a frame I, between the vertical bars of which a sound-absorbing cassette 2 is movably installed, having a perforation 3 on the side 4 and front about the surfaces. The cavity of the cartridge is filled with sound-absorbing material b. The sound-absorbing cassette 2 is attached to the inner cover 7. Cassette E has additional side walls 8, forming air ducts 9 with the block surfaces 4, and outlet openings 10 with the inner cover 7. A shield II is mounted outside the cassette I on the outside of the cassette 2, which forms additional side walls 8 inlets 12 in communication with ducts 9.

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b

the surface 5 of the cassette 2 is closely adjacent to the screen II. (Fig. 4), In the ventilation mode, the inner cover is open, the sound-absorbing cassette 2 is shifted toward the room, the outlet 10 and the inlet openings 12 are open. Air enters through the openings IZ into the air ducts 9 and passing through the perforated walls 4 and 5 of the cassette 2, loses some of the noise.

Deputy General Director of AOZT Mosfurniture

rsin

Claims (1)

Soundproof ventilation device, including a frame, between the vertical bars of which a perforated sound-absorbing cassette is movably mounted, mounted on the inner cover, and air ducts, characterized in that the sound-absorbing cassette has perforation along the side and front surfaces, is filled with sound-absorbing material and is equipped with additional side walls forming with air ducts, and with an internal cover - outlet openings, while outside the opposite of the cartridge on the bars of the frame mounted wounds forming additional holes cassette sidewalls communicating with the ducts.