CombiAerator ® is one the latest Tonelli developments. It’s a Scraped Surface Rotary Heat Exchanger featuring a very quick crystallization, joint to a high-grade homogenization, that refines the plasticization crystals while chilling (see left). The core patent is in the peculiar geometry of the unit, where teeth take turns with knives: the thermal exchange is highly increased, as well as homogenization and nitrogen incorporation (if present). The exchange chamber is narrow, but the exchange effectiveness is very high. This solution is extremely versatile, so that it fits variable technologies.
All the above versions are projected and built with “sanitary design“ regulations: the scraping knives are in high-grade synthetic resin, odorless, non-toxic, and bacteriologically inert.
This heat exchanger presents completely new technical solutions and thus was patented by Tonelli. The particular conformation of the rotor, which alternates scrapers and teeth, not only allows a thermal control of the batter, but also produces a marked effect of homogenization of the fat and gaseous phase. For this reason, with this system it is possible to produce and whip a very wide range of products, but mostly those products whose technology is not achievable with a classic aerator.