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US 12,076,686 B2Granted
Method and apparatus for cleaning an air flow from particles
AssigneeGrimaldi Development AB
InventorsClaes Inge, Peter Franzén, Carl Petrus Häggmark
Life of this patent
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Abstract
Method and apparatus for cleaning an air flow from particles, such as bacteria and other microorganisms. According to the invention, an aerosol of liquid droplets is generated in the air flow, whereafter the liquid droplets and the air flow are mixed and the droplets and particles are centrifugally separated from the air flow.
Claims10
An apparatus for cleaning an air flow from particles comprising:
- a centrifugal separator (22);
- a mixing chamber (40) communicating with a suction inlet (24) of the centrifugal separator (22);
- a plurality of spaced-apart surfaces (34) in the centrifugal separator (22) for trapping and agglomerating liquid droplets and particles separated from the air flow;
- an aerosol generator at a bottom portion of the mixing chamber for generating an aerosol of liquid droplets in contact with air flow therein;
- an inlet (42) for unclean air (82) to the mixing chamber (40) between the centrifugal separator (22) and said bottom portion;
- an inlet chamber (46) at the inlet (42) for dividing the mixing chamber (40) into a lower premix chamber (44) and an upper postmix chamber (52),
- said inlet chamber (46) being annular with a central passage (50) for fluid communication between the premix chamber (44) and the postmix chamber (52);
- an outlet (26) for clean air (86) from the centrifugal separator (22);
- and
- wherein said aerosol generator comprises a vibration generator (60) for generating the aerosol of droplets from a liquid volume (70) occupied in said bottom portion.
7 more elements
Dependencies are inferred from the claim text.