US 12,420,246 B2
Fluid mixing device
Stefan F. Meili, North Vancouver (CA)
Assigned to NORAM ENGINEERING AND CONSTRUCTORS LTD., Vancouver (CA)
Appl. No. 17/268,889
Filed by Stefan F. Meili, North Vancouver (CA); and NORAM INTERNATIONAL LIMITED, Dublin (IE)
PCT Filed Nov. 15, 2018, PCT No. PCT/IB2018/059010
§ 371(c)(1), (2) Date Feb. 16, 2021,
PCT Pub. No. WO2020/058751, PCT Pub. Date Mar. 26, 2020.
Claims priority of provisional application 62/734,056, filed on Sep. 20, 2018.
Prior Publication US 2021/0308640 A1, Oct. 7, 2021
Int. Cl. B01F 25/00 (2022.01); B01F 23/45 (2022.01); B01F 25/431 (2022.01); B01F 101/00 (2022.01)
CPC B01F 25/4315 (2022.01) [B01F 23/45 (2022.01); B01F 25/4316 (2022.01); B01F 25/431974 (2022.01); B01F 2025/913 (2022.01); B01F 2101/2204 (2022.01)] 18 Claims
OG exemplary drawing
 
1. A system for mixing fluids, comprising:
a mixing device;
a pipe having a bend therein;
the mixing device being in the pipe upstream of the pipe bend;
two immiscible liquids flowing through the pipe;
two counter-rotating Dean vortices in the two immiscible liquids downstream of the pipe bend, induced by the pipe bend;
the mixing device comprising a plate having a flowpath therethrough for the two immiscible liquids and three or more tabs extending from the plate into the flowpath at an angle from the plane of the plate, the tabs being formed by first folds in the plate, at least two of the tabs having a second fold therein, at least one of the tabs being flat and unfolded, the tabs and first and second folds being arranged to produce two counter-rotating vortices in the two immiscible liquids passing through the pipe;
the two produced counter-rotating vortices being oriented to reinforce the counter-rotating Dean vortices.