The invention discloses a fireproof return air silencing device for a ship cabin. The fireproof return air silencing device is used for being installed on a cabin plate (6) of a ship. The device comprises an air return grid (1) and a silencing box (2), the air return grid (1) and the silencing box (2) are installed at an air return opening (61) of a cabin plate (6) from the front face and the backface respectively, an air return pipe connecting port (7) is formed in the silencing box (2), and an air return cavity (8) communicating with the air return opening (61) and the air return pipe connecting port (7) is formed, wherein the silencing box (2) is made of a porous material, the outer surface of the silencing box (2) is covered with a fireproof protection material, and the air return cavity (8) has a sudden-change section shape. According to the device, the silencing box is made of the porous material, and the internal air return cavity has the abrupt change section, so that the propagation energy of sound waves passing through the silencing box can be weakened, the purpose of silencing is achieved, secondary noise can be reduced, Meanwhile, the fire-resistant integrity of the ship cabin plate is effectively guaranteed.

    本发明公开了一种船舶舱室防火回风消音装置,用于安装在船舶的舱室板(6)上。所述装置包括回风栅(1)和消音盒(2),分别从正面和背面安装在舱室板(6)的回风开口(61)处,消音盒(2)上设置有回风管连接接口(7),消音盒(2)内形成连通回风开口(61)和回风管连接接口(7)的回风腔室(8);其中,消音盒(2)采用多孔材料制成且外表面覆盖有防火保护材料,回风腔室(8)具有突变截面形状。本发明装置,采用多孔材料制作消音盒,且内部回风腔室具有突变截面,可减弱通过消音盒的声波的传播能量,达到消声的目的,有助于降低二次噪声,同时有效地保证船舶舱室板的耐火完整性。


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    Title :

    Fireproof return air silencing device for ship cabin


    Additional title:

    一种船舶舱室防火回风消音装置


    Contributors:

    Publication date :

    2020-06-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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