US 12,269,048 B2
Spray device for generating a micro-jet spray
Cornelis Johannes Maria Van Rijn, Amsterdam (NL); Wietze Nijdam, Enschede (NL); Wilhelmus Petrus Johannes De Kruijf, Enschede (NL); and Henri Joseph Van Egmond, Enschede (NL)
Assigned to MEDSPRAY B.V., Enschede (NL)
Appl. No. 17/055,214
Filed by MEDSPRAY B.V., Enschede (NL)
PCT Filed May 16, 2019, PCT No. PCT/NL2019/050285
§ 371(c)(1), (2) Date Nov. 13, 2020,
PCT Pub. No. WO2019/221603, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 18172755 (EP), filed on May 16, 2018.
Prior Publication US 2021/0268523 A1, Sep. 2, 2021
Int. Cl. B05B 1/10 (2006.01)
CPC B05B 1/10 (2013.01) 18 Claims
OG exemplary drawing
 
1. A spray device for generating, during operation, a micro jet spray consisting of spray droplets, the spray device comprising a spray nozzle unit having at least one spray nozzle body, wherein said spray nozzle body is covered by a membrane layer, wherein said at least one spray nozzle body comprises at least one cavity for receiving, during operation, a pressurized fluid and a number of orifices that during operation receive said pressurized fluid and release, during operation, concurrent rays of consecutive droplets to said external environment, each of said at least one cavity being bounded by said membrane layer that separates said cavity from an external environment and that comprises at least one of said number of orifices in fluid communication with said cavity extending throughout a thickness of said membrane layer, wherein said number of orifices comprises a group of first orifices of substantially identical first size that release, during operation, concurrent rays of droplets in a first region of said micro jet spray, and wherein said number of orifices comprises a group of second orifices of substantially identical second size that release, during operation, concurrent rays of droplets in a second region of said micro jet spray, characterized in that a ray density of said first region is higher than a ray density of said second region, in that said first size of said first orifices is smaller than said second size of said second orifices, and in that, during operation, droplets in said micro jet spray emanating from said first orifices of said first region have substantially a same size as droplets emanating from second orifices of said second region.