FUSION TECH / 5
4 / OVEN BREAKPOINT GUIDE
The breakpoint is formed by a combination of the fan, alternating dampers, and the corresponding high and low velocity airflows created in the oven. How is the Breakpoint Formed? Airflow created by the fan enters the supply duct and hits the alternating dampers. The damper that is set to block the duct creates the low velocity airflow while the damper set to open creates the high velocity airflow. These differing airflows are on opposing sides of the oven. The high velocity airflow travels down the oven wall, across the floor, and up the opposing side. The low velocity airflow travels a much shorter distance, hence being low velocity.
Back in the late 1950’s, an innovative new way of cooking product in the meat processing industry was discovered — an innovation that is still in use in industrial smokehouses and dehydrators today. What is the Breakpoint?
This innovation incorporated the use of alternating dampers in forced-air ovens so air from a single fan could be delivered to product on racks.
The Breakpoint the most important aspect of an oven, as it is responsible for cooking your product.
The alternating dampers on either side of the oven create two opposing airstreams in the oven cabinet. The location where these opposing airstreams collide is called the breakpoint.
The collision of the low velocity airflow and the high velocity airflow causes the air to break towards the center of the oven — forming the breakpoint.
When formed correctly, the breakpoint has enough velocity to penetrate through the product on your rack before the air is drawn back to the return duct. It’s this breakpoint air that ultimately cooks your product.
The location where two opposing airstreams in the oven cabinet collide and move either horizontally or vertically through the cabinet (depending on location of breakpoint) to cook product is referred to as the Breakpoint. Breakpoint Defined
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