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1. US20210268523 - SPRAY DEVICE FOR GENERATING A MICRO-JET SPRAY

Office
United States of America
Application Number 17055214
Application Date 16.05.2019
Publication Number 20210268523
Publication Date 02.09.2021
Publication Kind A1
IPC
B05B 1/10
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
02designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops
10in the form of a fine jet, e.g. for use in wind-screen washers
CPC
B05B 1/10
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
02designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, ; or having an outlet of particular shape
10in the form of a fine jet, e.g. for use in wind-screen washers
Applicants MEDSPRAY B.V.
Inventors Cornelis Johannes Maria Van Rijn
Wietze Nijdam
Wilhelmus Petrus Johannes De kruijf
Henri Joseph Van Egmond
Priority Data 18172755 16.05.2018 EP
Title
(EN) SPRAY DEVICE FOR GENERATING A MICRO-JET SPRAY
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 device is characterized in that a spray nozzle unit is formed by a nozzle body (1), comprising a support body (2) with at least one cavity (3) spanned by a membrane layer (4) having a nozzle orifice throughout a thickness of said membrane layer at an area of said cavity (3) in fluid communication with that cavity (3). The nozzle orifice may be part of a first relatively dense group of first orifices (5a) or of a less dense second group of second nozzle orifices (5b) in the membrane layer. A mean diameter of the nozzle orifices (5a) located in the first group substantially differs from the mean diameter of the nozzle orifices (5b) in the second group to obtain a uniform droplet size distribution in the spray.


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