L&rsquoAIR LIQUIDE SOCIETE ANONYME POUR L&rsquoETUDE ET L&rsquoEXPLOITATION DES PROCEDES GEORGESCLAUDE;L&rsquo；AIR LIQUIDE SOCIETE ANONYME POUR L&rsquo；ETUDE ET L&rsquo；EXPLOITATION DES PROCEDES GEORGESCLAUDE
599787 Disclosed is a process for chilling products, in particular food, in a chilling device, such as a mixer, blender or grinder. The chilling is carried out by means of injection of two cryogenic liquids, Nitrogen and Carbon Dioxide into the mass of the product at the bottom portion of a chamber of the chilling device. The liquid Nitrogen and the liquid CO2 are injected either separately, into at least two injection points of the device, or by mixing both cryogenic fluids at a single injection point. Separate injection of the two liquids into the chamber, as opposed to pre-mixing before entering the chamber, has the advantage of better utilisation of the refrigeration exchanges between the two liquids inside the chamber.
