Abstract: The invention pertains to a device for the cooling of edible foams, where a cooling or freezing system for pre-freezing of the foam is directly outlet-connected to an aeration system, a motor driven extruder device designed as combined deep freezing and transport device is outlet-connected to the cooling and freezing system, in which the pre-frozen foam can be cooled down to storage temperature, and the aeration device, the cooling or freezing system and the extruder device are connected together by means of pipes. The device of the present invention is characterized in that the extruder device has at least one double screw system with two screws positioned parallel to each other with their rotational axes. The lands of the screws of the double screw system scrape against the inner cylinder mantle surface of the housing surrounding it.

Abstract: A process and apparatus for continuously controlling the crystallization of material systems in particular fat containing substances, such as chocolate masses by a thermal treatment which entails cooling and heating. The cooling process is far stronger than under the traditional procedural method, is in fact so strong that under static conditions it would cause the material system that is to be processed to solidify and harden spontaneously. This solidification is prevented by a heating process which uses mechanical energy resulting from shear stress, in a shear flow, where the introduction of mechanical energy and hence the local temperature are spontaneously and sensitively adjustable. This permits the achievement of particular pre-determinable crystal modifications, and hence of specific desired properties in the final product. The treatment states place within a mechanism consisting of a cylindrical container and a rotor, driven rotationally, whose rotational speed is adjustable.

Abstract: The invention pertains to a device for the cooling of edible foams, where a cooling or freezing system for pre-freezing of the foam is directly outlet-connected to an aeration system, a motor driven extruder device designed as combined deep freezing and transport device is outlet-connected to the cooling and freezing system, in which the pre-frozen foam can be cooled down to storage temperature, and the aeration device, the cooling or freezing system and the extruder device are connected together by means of pipes. The device of the present invention is characterized in that the extruder device has at least one double screw system with two screws positioned parallel to each other with their rotational axes. The lands of the screws of the double screw system scrape against the inner cylinder mantle surface of the housing surrounding it.