Patent ID: 8113109

Claim:
A machine for heat exchange with a product comprising: a vat, with a first end, a second end and an outer surface, for containing the product to be treated, a machine shaft adjacent at least one end of said vat, at least two elements for heating or cooling a product and for being coupled to the machine shaft, a plurality of separators configured to be coupled to the machine shaft, at least one separator being located between the at least two elements, the at least two elements and the plurality of separators forming a body fixed to one of the first end and the second end, and a plurality of scraper blades disposed between the at least two elements and between the body and an inner surface of the vat configured to scrape a total surface area of heat exchange, wherein the plurality of scraper blades are mounted on a rotating structure driven by a motor fixed to the other of the first end and the second end.