Air intake filter with cyclone separator stage

Details Air intake filter with cyclone separator stage Air intake filter with cyclone separator stage

1977-12-07

1979-07-31

Lutter, Frank W.

Gas separation

Plural serial basically diverse separating media

Plural stages in unitary casing

55396, 55397, 55457, B01D 4516, B01D 4506

Patent

active

041629051

ABSTRACT:
An air intake filter for combustion engines and other air-aspirating machines having a cyclone-type separator stage arranged upstream of a strainer-type filter element. This is accomplished with a filter assembly consisting of an enclosed cylindrical filter housing holding a hollow-cylindrical filter element between its axial ends, the incoming raw air flowing first into an annular raw air space which serves as a cyclone separation chamber, where it is given a helical swirl, and from where the air flows radially inwardly through the filter element. In the bottom portion of the separation chamber is arranged a sheet metal baffle collar with perforations in the form of blind cuts, which create intermediate web portions. The latter are so inclined that the circumferential motion component of the air swirl is reversed, as the raw air passes through the baffle collar, thereby preventing entrainment of particulate matter towards the filter element.

REFERENCES:
patent: 2418381 (1947-04-01), Wegmann
patent: 3078650 (1963-02-01), Anderson et al.
patent: 3319404 (1967-05-01), Lowther
patent: 3382651 (1968-05-01), Hahl et al.
patent: 3399515 (1968-09-01), Hahl
patent: 3429108 (1969-02-01), Larson
patent: 3508383 (1970-04-01), Humbert, Jr. et al.
patent: 3672130 (1972-06-01), Sullivan et al.
patent: 3907529 (1975-09-01), Borsheim
patent: 4017278 (1977-04-01), Reese
patent: 4020783 (1977-05-01), Anderson et al.

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