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1. EP3569318 - SPRAY DEVICE FOR GENERATING A MICRO-JET SPRAY

Office
European Patent Office
Application Number 18172755
Application Date 16.05.2018
Publication Number 3569318
Publication Date 20.11.2019
Publication Kind A1
IPC
B05B 1/14
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
1Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
14with multiple outlet openings; with strainers in or outside the outlet opening
CPC
B05B 1/14
BPERFORMING OPERATIONS; TRANSPORTING
05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
1Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
14with multiple outlet openings
Applicants MEDSPRAY B V
Inventors VAN RIJN CORNELIS JOHANNES MARIA
NIJDAM WIETZE
DE KRUIJF WILHELMUS PETRUS JOHANNES
VAN EGMOND HENRI JOSEPH
Designated States
Priority Data 18172755 16.05.2018 EP
Title
(DE) SPRÜHVORRICHTUNG ZUR ERZEUGUNG EINES MIKROSTRAHLSPRAYS
(EN) SPRAY DEVICE FOR GENERATING A MICRO-JET SPRAY
(FR) DISPOSITIF DE PULVÉRISATION POUR GÉNÉRER UNE PULVÉRISATION PAR MICROJET
Abstract
(EN) The present invention provides a spray device that generates a fluidic micro-jet spray and that allows and retains a relatively narrow droplet size distribution, of micro-jets and droplets obtained via the Rayleigh breakup mechanism, under a well-defined control of coalescence. To that end a spray nozzle unit is formed by a nozzle body (1), comprising a support body with at least one cavity (3) spanned by a membrane layer (4) having a number of nozzle orifices (5a, 5b) throughout a thickness of said membrane layer at an area of said cavity in fluid communication with that cavity. The nozzle orifices may form a central group and a peripheral group of nozzle orifices in the membrane layer. A mean nozzle diameter of the nozzle orifices (5a) located in the central group substantially differs from the mean nozzle diameter of the nozzle orifices (5b) in the peripheral group to obtain a uniform droplet size distribution in the spray.
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