11 Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; cooking apparatus and processing installations for food, animal feed, tobacco goods; tempering machines for the heat treatment of food, animal food, tobacco goods; cooling tunnels for the production and processing of chocolate, sweets, ice cream, snacks and bakery products; apparatus and devices for heating, tempering, drying, dehydrating, cooling, also with functions for blending, mixing, stirring, mixing in, folding in, pureeing, crushing, hacking, pressing, squashing, reducing, separating, centrifuging and sorting of solid materials, slurry, pasty masses and viscous materials as well as plants essentially consisting of such apparatus and devices; reactors, evaporators, boiler and heat exchanger for use in the chemical, mineral and petrochemical industries as well as for use in the food industry, as well as parts of all the aforementioned goods; drying plants, machines for drying, heating and cooling of powdery substances