DEVICE FOR CONTAMINATED AIR PRESERVATION AND CLEANING Russian patent published in 2012 - IPC A62B11/00 

FIELD: process engineering.

SUBSTANCE: invention relates to contaminated air cleaning and preservation. Proposed device comprises blower with inlet and outlet communicated via aid ducts with premise. Air cleaning unit is arranged at intake air duct while foam generator is arranged at discharge air duct and provided with foam generating fluid source. Foam destructor with separator is arranged between air cleaning unit and protected premise. Intake air duct communicates via its section with premise top zone and, via additional air duct, with inflatable envelopment arranged outside of said premise. Ejector-type foam generator comprises casing with flanges on end faces to accommodate foam forming solution feed nozzle. Casing side surfaces have air feed holes. Mixing chamber is arranged inside said casing. Ejector made up of tapered shell with cowl representing 2nd-order surface of revolution, i.e. ball, ellipsoid, is arranged inside nozzle. Ejector is attached to nozzle by three ejector tubes Mixing chamber is arranged aligned with said nozzle and made up of aligned confuser, cylindrical section and diffuser with its larger base secured to the flange.

EFFECT: higher efficiency of cleaning.

1 cl, 2 dwg