CYCLONE-TYPE DUST CATCHING APPARATUS (VERSIONS) Russian patent published in 2006 - IPC A47L9/16 

FIELD: mechanical engineering, in particular, equipment used in vacuum cleaners.

SUBSTANCE: apparatus has casing of cyclone-type dust catcher, said casing including integrally made first cyclone part and second cyclone part, said first part being formed around said second part. First cover is put onto casing of cyclone-type dust catcher, said cover being provided with air channels for passage of dust-laden air flow therethrough. Second cover collects and transfers air delivered from second part of cyclone into casing of cyclone-type dust catcher. Dust receiver positioned under casing of cyclone-type dust catcher is adapted for collecting of separated dust. Air channels are equipped with air ducts, each of air ducts being connected to second part of cyclone and adapted for passage of air delivered from first part of cyclone into its second part, and discharge apertures through which apertures air delivered from second part of cyclone is discharged into cavity pressurized by means of second cover. Air ducts are arranged around discharge apertures. Upper side of each air duct is made rounded for reducing of air friction discharged from first part of cyclone. According to one of versions, apparatus has sealing device adapted for pressurizing of first and second parts of cyclone and inserted between casing of cyclone-type dust catcher and first cover. Sealing device has predetermined shape corresponding to that of second part of cyclone and equipped with windows for partially closing cross section of inlet apertures provided in second part of cyclone.

EFFECT: increased efficiency in separating and collecting of finely dispersed dust.

19 cl, 11 dwg