Devices and method for producing ice beads from an aqueous...

B - Operations – Transporting – 01 – J

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B01J 2/02 (2006.01) F25C 1/00 (2006.01)

Patent

CA 2753653

The present invention relates to a device (1) for producing ice beads (10). The device (1) comprises at least one cooling device (18) for cooling a hydrophobic liquid (20) to a temperature of at least -5 °C and a receiving vessel (2, 102) having the hydrophobic liquid (20). Furthermore, the device (1) comprises a pipetting device (3) situated on the receiving vessel (2, 102), which comprises a vessel (4) for an aqueous mixture (11). A plurality of tapering outlet tubes (5) extends therefrom, which is situated in a vessel wall (4'), into the receiving vessel (2, 102). An outlet end of an outlet tube (5) is situated spaced apart in the range of 3 cm to 10 cm from a surface (20') of the hydrophobic liquid (20). Furthermore, the device (1) comprises at least one apparatus for providing a relative velocity between the pipetting device (3) and the hydrophobic liquid (20). The aqueous mixture (11) covers a fluid path (a) from the vessel (4) of the pipetting device (3) via the outlet tubes (5) into the hydrophobic liquid (20) and forms ice beads (10) therein. Furthermore, the present invention provides a method for producing ice beads (10) using the device (1) and discloses ice beads (10) which are producible by the method.

L'invention concerne un dispositif (1) de production de billes de glace (10), comportant au moins un dispositif de refroidissement (18) pour refroidir un liquide hydrophobe (20) à une température d'au moins -5 °C, et un réservoir (2, 102) contenant le liquide hydrophobe (20). Le dispositif (1) comporte également un dispositif de pipetage (3) disposé sur le réservoir (2, 102), comprenant un récipient (4) pour un mélange aqueux (11). Une pluralité de tubulures de sortie (5) qui s'amincissent, disposées dans une paroi du récipient (4'), s'étendent dans le réservoir (2, 102) depuis le récipient. Une extrémité de sortie d'une tubulure de sortie (5) est espacée de 3 à 10 cm d'une surface (20') du liquide hydrophobe (20). Le dispositif (1) comporte également au moins un appareil destiné à produire une vitesse relative entre le dispositif de pipetage (3) et le liquide hydrophobe (20). Le mélange aqueux (11) parcourt un trajet fluidique (a) du récipient (4) du dispositif de pipetage (3), à travers les tubulures de sortie (5), vers le liquide hydrophobe (20), et y forme des billes de glace (10). L'invention concerne également un procédé de production de billes de glace (10) au moyen du dispositif (1), et les billes de glace (10) produites au moyen de ce procédé.

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