Mepaco engineers cooks to specific thermal processing applications. These specially designed cookers designed for batch cooking or continuous applications.
Thermablend Cooker Brochure
Direct steam injectors are more efficient for cooking; however the formulation will pick up moisture. In addition to higher efficiencies, direct steam does not require a scraper used to prevent burn-on to the inside surfaces of the tub.
Scrapers are needed when the potential for burn-on exists. This is typical when using indirect methods for cooking. Scrapers eliminate burn-on which reduces the heat transfer coefficient. Scraper systems also provide cooking consistency with sensitive cooking applications.
Scrapers can be clean-in-place or removed for cleaning, depending on product and sanitation protocol.
If the scraper doesn't function properly and leaves residual burn-on, it is a sign that the scraper needs to be replaced. Upon visual inspection, the edges of the scraper will be rounded and worn at which point the scraper needs to be replaced.
Applications with thick and dense product need a dual screw. Also, if you have a variety of suspended solids, the dual screw units tend to do a good job of mixing and cooking while maintaining a homogeneous blend - even for the most delicate particulates. Single screw units are often used for sauces, soup bases and lighter, less viscous products.