FIELD: ventilation devices.
SUBSTANCE: sucking-in washer can be used in stationary and portable ventilation assemblies. Sucking-in washer has axis-symmetrical shallow case with one open end. Case is provided at its sides with at least two cantilever axial-symmetrical branches, provided with receiving funnels at free end. Branches are installed at angle smaller than 180 degrees one to the other. Total cross-section area Σ of branches meets to relation of Σs≤S, cm2, where S is cross-section area of open end of washer's case, cm2.
EFFECT: widened area of suck-out of polluted air; improved efficiency of operation.
11 cl, 15 dwg
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