Procedimiento de extrusión a baja temperatura y dispositivo de microestructuración de energía optimizada y adaptado a viscosidad de masas aireadas congeladas
Device for extruding freeze at low temperature under conditions microstructuring adapted to viscosity optimized power frozen such as ice cream aerated systems, comprising a variable geometry screw along the extruder length locally adjusted according to the local viscosity with respect to efficient progressive dispersing, simultaneous progressive temperature reduction and related freezing of water, characterized in that said device comprises: a width of the leakage gap between screw flight and inner wall of the lower barrel to 0.1 mm, preferably less than 0.5 mm, a thickness of around spindle between 2 and 20 mm and 1: an inclination of the front edge of the screw flight relative to the inner barrel wall of between 10and 45 preferably of between 30and 35 °, preferably by applying the tilt to the first 2 mm external height screw flight, or 2: front edge back spindle rounded with a radius of preferably> = 2 mm, a height of the screw channel adjusted extruder along the extruder length to mass viscosity whereas in the feeding zone (I) of the extruder, the ratio of channel height H spindle and external screw diameter D is set to a value between 0.03 and 0.07, in the intermediate zone (length) (II) between 0.1 and 0.15 and in the final third of the extruder length between 0.1 and 0.25.Dispositivo para la extrusión por congelación a baja temperatura bajo condiciones de microestructuración adaptadas a viscosidad de energía optimizada de sistemas aireados congelados tales como helado, que comprende una geometría variable de husillos a lo largo de la longitud del extrusor, localmente ajustadas según la viscosidad local con respecto a la dispersión progresiva eficiente, reducción progresiva simultánea de la temperatura y la correspondiente congelación del agua, caracterizado porque dicho dispositivo comprende: una anchura de la ranura de fuga entre vuelta de husillo y pared interna del barril inferior a 0,1 mm, preferentemente inferior a 0,5 mm, un grosor de vuelta de husillo d
