CYCLONE DUST SEPARATOR Russian patent published in 2007 - IPC A47L9/16 

FIELD: equipment for separation of dust from air by centrifugal force.

SUBSTANCE: cyclone dust separator has cyclone casing with cyclone chamber and dust collector surrounding its outer periphery, top cover located on upper end of cyclone casing so as to define connection channel between cyclone chamber and dust collector, and back flow preventing projection provided on internal wall of top cover for preventing returning of dust settled within dust separator back into cyclone chamber. In one version of dust separator, cyclone casing has round internal wall, external wall separated from internal wall by set distance, bottom connecting internal wall with external wall, and upper wall connected with upper end of external wall. Air inlet pipe is extending through external and internal walls of cyclone casing and air outlet pipe is extending through cyclone casing bottom. In another version, cyclone dust separator has lower wall, external wall extending upward from lower wall by first height, internal wall spaced from external wall and extending upward from external wall by second height smaller than first height, and top cover closing internal and external walls so as to define connection channel between internal wall and top cover, connection channel having forth height. Back flow preventing projection extends downward from top cover by third height smaller than forth height. Cyclone dust separator may contain cyclone casing having air inlet pipe, air outlet pipe, cyclone chamber and dust collector surrounding outer periphery of cyclone chamber. In cyclone dust separator comprising cyclone chamber where air is drawn into cyclone chamber and dust is separated from drawn air by centrifugal force, dust collector surrounding outer periphery of cyclone chamber, and connection channel provided between cyclone chamber and dust collector, dust-laden air is drawn into cyclone chamber to zone adjoining its bottom and dust is separated from air to flow upward to connection channel and fall through said channel into dust collector, while filtered air is discharged via opening formed centrally of cyclone chamber bottom so as to prevent dust return from dust collector on upturning of dust separator.

EFFECT: increased efficiency in separation of dust from air.

20 cl, 7 dwg