Device and procedure to generate steady compound jets of...

B - Operations – Transporting – 01 – J

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B01J 13/04 (2006.01) A23L 1/00 (2006.01) A23L 1/22 (2006.01) A23L 1/30 (2006.01) A23P 1/04 (2006.01) B05B 1/06 (2006.01) B05B 5/16 (2006.01) B05B 7/06 (2006.01) B05B 7/08 (2006.01)

Patent

CA 2436524

The invention relates to a device and method for generating liquid capillary streams of multi-component immiscible liquids, the diameter of which may range from tens of nanometers to hundreds of microns and to a relatively monodispersed aerosol of electrically charged multi-component droplets generated by rupture of the streams due to capillary instabilities. Said immiscible liquids flow at appropriate volumes through metal needles that are connected to a high voltage source in such a way that all the needles are contained inside one needle. The needles may or may not be placed concentrically relative to one another. The electric forces extrude the streams thereby resulting in diameters ranging from 100 microns to a few nanometers. The device and method disclosed in the invention can be used in fields such as materials science and food technology, wherever generation and controlled handling of structured micrometric and nanometric sized streams is an essential part of the process.

L'invention porte sur un dispositif et sur un procédé permettant de générer des jets liquides capillaires composés multicomposants de liquides non miscibles dont les diamètres peuvent être compris entre des dizaines de nanomètres et des centaines de micra. L'invention porte également sur un aérosol relativement monodispersé aux gouttes multicomposants chargées électriquement et engendrées à travers la rupture par instabilité capillaire des jets composés. Lesdits liquides non miscibles s'écoulent, à des débits appropriés, à travers des aiguilles métalliques reliées à des sources haute tension, de manière qu'une des aiguilles contienne à l'intérieur les autres aiguilles susceptibles d'être disposées de manière concentrique. Les forces électriques profilent les jets jusqu'à obtention de diamètres allant de 100 micras jusqu'à quelques nanomètres. Le dispositif et le procédé sont applicables à des domaines, dont la science des matières et la technologie des aliments, dans lesquels la génération et la manipulation contrôlée de jets structurés de taille micro ou nanométrique constituent une partie essentielle du processus.

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