| 摘要 |
FIELD: construction. ^ SUBSTANCE: invention is related to insulating devices, in particular, to plates with sound-absorbing coating, and may be used in machine building, ship building, construction and other industries. Soundproof panel of fan body includes metal sheets with sound-absorbing layer installed between them and bordered with elastic gaskets that are rigidly fixed with metal sheets. Sound-absorbing layer is made of air-penetrable material with density of not more than 100 kg/m3. Ratio of metal sheet area occupied with gaskets to the total area of the sheet does not exceed 20%. Metal sheets are fixed to gaskets with self-tapping screws, at that self-tapping screws of one metal sheet fastening do not contact self-tapping screws for fastening of the opposite metal sheet. ^ EFFECT: increase of sound proofing, reliability at low cost. ^ 2 dwg |
