US 12,076,686 B2
Method and apparatus for cleaning an air flow from particles
Claes Inge, Nacka (SE); Peter Franzén, Bandhagen (SE); and Carl Petrus Häggmark, Täby (SE)
Assigned to GRIMALDI DEVELOPMENT AB, Nacka Strand (SE)
Appl. No. 17/434,785
Filed by GRIMALDI DEVELOPMENT AB, Nacka Strand (SE)
PCT Filed Mar. 4, 2020, PCT No. PCT/SE2020/050238
§ 371(c)(1), (2) Date Aug. 30, 2021,
PCT Pub. No. WO2020/180236, PCT Pub. Date Sep. 10, 2020.
Claims priority of application No. 1930079-7 (SE), filed on Mar. 5, 2019.
Prior Publication US 2022/0134273 A1, May 5, 2022
Int. Cl. B01D 50/40 (2022.01); B01D 45/14 (2006.01); B01D 47/06 (2006.01); B03C 3/017 (2006.01); B04B 5/12 (2006.01)
CPC B01D 50/40 (2022.01) [B01D 45/14 (2013.01); B01D 47/066 (2013.01); B03C 3/017 (2013.01); B04B 5/12 (2013.01); B04B 2005/125 (2013.01)] 10 Claims
OG exemplary drawing
 
1. 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.