Vacuum cleaner

Details Vacuum cleaner Vacuum cleaner

1977-11-25

1979-10-30

Lacey, David L.

Gas separation

With recycle means

For concentrate entrained in effluent gas outlet means

55339, 55403, 55409, 55337, 55470, 55DIG3, 15353, B01D 4514, A47L 916

Patent

active

041727100

ABSTRACT:
A vacuum cleaner comprising a first whirl chamber for receiving dust-laden air and separating heavy and light dust particles therefrom, a second whirl chamber communicating at its inlet end with said first whirl chamber for receiving air therefrom and concentrating very light dust particles in said air, an intermediate chamber arranged at the outlet end of the second whirl chamber for receiving the very light dust particle-containing air therefrom, and a separate air-passage connection between the intermediate chamber and the first whirl chamber for return of said very light dust particle-containing air thereto.

REFERENCES:
patent: 2188031 (1940-01-01), Brock
patent: 2372514 (1945-03-01), Pootjes
patent: 2498832 (1950-02-01), Watson et al.
patent: 3174264 (1965-03-01), McKnab
patent: 3234716 (1966-02-01), Sevin et al.

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