US 12,128,430 B2
Method for assessing a shape of a bell-shaped liquid spray
Yevgen Zhmayev, Muenster (DE); Fatmir Raka, Muenster (DE); Igor Millbaier, Muenster (DE); Georg Wigger, Muenster (DE); and Daniel Briesenick, Muenster (DE)
Assigned to BASF COATINGS GMBH, Muenster (DE)
Appl. No. 17/756,453
Filed by BASF COATINGS GMBH, Muenster (DE)
PCT Filed Nov. 21, 2020, PCT No. PCT/EP2020/082997
§ 371(c)(1), (2) Date May 25, 2022,
PCT Pub. No. WO2021/105026, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 19211889 (EP), filed on Nov. 27, 2019.
Prior Publication US 2023/0001438 A1, Jan. 5, 2023
Int. Cl. B05B 12/08 (2006.01); B05B 3/10 (2006.01); B05B 5/04 (2006.01)
CPC B05B 12/082 (2013.01) [B05B 3/1014 (2013.01); B05B 5/0407 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for assessing a shape of a bell-shaped liquid spray, comprising the steps of:
operating a spray nozzle for delivering a bell-shaped liquid spray;
capturing an image of a plurality of liquid jets forming the delivered bell-shaped liquid spray during operation of the spray nozzle;
processing the captured image, wherein processing the captured image comprises converting the captured image to a binary image, the binary image comprising a plurality of filaments, each filament corresponding to a liquid jet and a plurality of arcs, each arc connecting two filaments being located next to each other; and
deriving at least one shape parameter of the liquid jets from the processed image.