Apparatus for continuous tempering of fat-containing, chocolate masses
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United States of America Patent
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Dec 22, 1998
Grant Date -
N/A
app pub date -
May 8, 1997
filing date -
May 9, 1996
priority date (Note) -
Expired
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Abstract
An apparatus having a cylindrical tempering column comprising a cooling stage and a subsequent reheating stage for continuous tempering of a fat-containing, chocolate-like mass. A plurality of Interconnected mass chambers are separated by intermediary heat exchange chambers. The mass chambers comprise mixing and stirring elements (8) with radially extending, plate shaped arms (11) comprising plate shaped mixing blades (13, 14, 15, 16; 17, 18, 19, 20). An upper or lower mixing blade (16; 20) arranged at the peripheral end of the mixing and stirring element (8) has a vertically extending end surface (27), thereby providing a shear gap between the end surface (27) and the cylinder wall (28). Thus the effect of a shear is provided at the comparatively large surface area at the cylinder wall and a considerable increase of the total area of the shear gaps is obtained. Furthermore, the total surface area of the plate shaped arms (11) and of the mixing blades (13, 14, 15, 16; 17, 18, 19, 20) may decrease gradually in direction out towards the peripheral cylinder wall. Hereby is achieved a considerable more uniform stirring of the mass at all areas of the chamber followed by an enhanced heat transport in the mass.
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