| 摘要 |
FIELD: construction. ^ SUBSTANCE: flexible elements are arranged in the firm of elastic closed shells fixed on air duct with the possibility of compressed air supply into them. Distance h between elastic shells is accepted as more than D. Maximum diametre of shells is accepted as less than 0.9 D, where D - inner diametre of drain. ^ EFFECT: simplification of design and no power consumption. ^ 2 cl, 2 dwg |
