How it Works
The RotaTherm® Direct Steam Injection Continuous Cooker can heat to your aim temperature in approximately 15-20 seconds.
Thorough & effective heat treatment
Once at the required temperature, your product can then be held precisely at the correct heat so that micro-organisms are eliminated in accordance with pasteurisation or sterilisation (UHT) procedures.
Long run times in hygienic enclosed system
Due to superior design, the RotaTherm® continuous cooker is able to operate continuously for 156 hours before full CIP. It can cook to temperatures over 100°C and, importantly, is a totally enclosed hygienic system. This means your product is not exposed to the environment once it has continuously fed into the cooker. The RotaTherm® is provided standard with a CIP system to clean the system on the few occasions you need to!
Here’s how the RotaTherm® continuous cooker works
The product is fed forward by the pressure created and controlled between the feed pump and the back pressure assembly. The fully enclosed high pressure cooking zone allows for cooking up to 145ºC. Go to the Interactive Brochure roll over the different stages.
At the end of the process the product is directly cooled and de-aerated by vacuum cooling to a set point, gently cooled indirectly, or in a combination appropriate for the particular product…read more about cooling options.
Versatile Processing Conditions
With a RotaTherm® system you can optimise the processing conditions of your products by managing the temperature, heating profile, pressure, shear, holding time, de-aeration, cooling, density and viscosity…
Surface Temperature Management
The cooking column, top elbow and rotor are temperature managed to address burn on and contribute to the RotaTherm®’s unique ability to pause.
The RotaTherm® hardware is operated by a dedicated control system. The Control system is designed, programmed and implemented by Gold Peg and is available in Mitsubishi, Siemens & Allen Bradley.
Control of work / shear on product
The RotaTherm®’s rotor mixes steam in to the product by breaking up ‘laminar flow’, creating ‘plug flow’ in the cooker, so that all of your product receives the same heat treatment. The rotor’s variable speed allows you to fine-tune the amount of mechanical work/energy/shear on the product being cooked.
Fast Heating & Clean Product
Steam is injected through proprietary non-burn jets. The steam is mechanically mixed and fused with the product by a speed-adjustable rotor – evenly heating your product in about 15 seconds.