A - Human Necessities – 23 – F
Patent
A - Human Necessities
23
F
A23F 5/24 (2006.01) B01F 1/00 (2006.01) B01F 5/24 (2006.01) B01F 7/12 (2006.01) B01F 13/10 (2006.01)
Patent
CA 2088351
ABSTRACT This invention is directed to an apparatus and method for wetting and dissolving finely divided dry particles, including hygroscopic particles such as coffee fines, in a liquid, including viscous liquids such as concentrated cof- fee liquor, in a manner in which foaming, the presence of wet lumps and liquor degradation are minimized. The appa- ratus includes a dissolving tank containing at least one pair of counter-rotating drums partially submerged in a body of the dissolving liquid. The tank includes a liquid inlet and a discharge conduit which maintain a predeter- mined level of liquid in the tank. A powder feeding device mounted above the tank discharges a falling curtain of par- ticles onto a thin layer of liquid on the surface of one of the drums in each counter rotating pair. The partially wetted powder is carried into the nip between the counter- rotating drums to compress, knead and break up wet lumps of partially wetted powder formed on the surface of the drums, with the wetted powder being carried into and dissolved in the body of liquor. Continued rotation of the drums car- ried any wet powder lumps which may remain in the liquor into the converging gap between the drum and a tangentially mounted solubilizing bar to abrade and disintegrate the lumps in the liquor body. Any minor amounts of powder lumps which remain in the liquor are passed through a cy- lindrical filter having converging gaps formed by securing a plurality of wedges in close proximity to one another. Any remaining powder lumps are compressed, sheared and dis- solved upon passage through the filter to provide coffee liquor having an increased solids content, which is free of undissolved particles and wet powder lumps.
Blake Cassels & Graydon Llp
Societe Des Produits Nestle S.a.
LandOfFree
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