US 11,938,489 B2
Centrifugal separator having an improved flow and system comprising such a centrifugal separator
Johnny Johansen, Copenhagen (DK); Jesper Gerdes Kyhnauv, Copenhagen (DK); and Tod Nikischer, Vancouver (CA)
Assigned to FLSmidth A/S, (DK)
Appl. No. 17/762,725
Filed by FLSmidth A/S, Valby (DK)
PCT Filed Nov. 11, 2020, PCT No. PCT/EP2020/081783
§ 371(c)(1), (2) Date Mar. 22, 2022,
PCT Pub. No. WO2021/094386, PCT Pub. Date May 20, 2021.
Claims priority of application No. PA 2019 01328 (DK), filed on Nov. 13, 2019.
Prior Publication US 2022/0339640 A1, Oct. 27, 2022
Int. Cl. B04B 1/08 (2006.01); B03B 5/32 (2006.01); B04B 7/08 (2006.01)
CPC B03B 5/32 (2013.01) [B04B 1/08 (2013.01); B04B 7/08 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A centrifuge bowl (10) having a base, a circumferential wall surrounding a central axis and an open end substantially opposite of the base, said central axis passing through the base, the circumferential wall having an inner and outer surface, the inner surface (23) of the centrifuge bowl comprising a plurality of annular recesses (19) at axially spaced positions; wherein a first portion of the inner surface of the centrifuge bowl comprises one or more recesses having an angle with respect to the central axis (15) which is different than the angle of a second portion of the inner surface of the centrifuge bowl comprising one or more recesses; wherein the difference in inclination between the angles of the first portion of the inner surface and the second portion of the inner surface is at least 3 degrees to 5 degrees.