Baking oven with regions at different temperatures - with even temperature distribution in each region

摘要

Oven heated by circulating gas has >1 region, each of which is heated by flat radiators top and bottom which are fed by gases through vertical inlet and outlet channels. The gases are provided by burning gas or oil. They are circulated by two fans. The regions are divided into two groups. If required these can be heated to different temps. Valves are placed in the vertical channels where two gps. connect. These valves are coupled with a set of valves mounted at the top of the vertical channels. As one set of valves opens the other closes and vice versa. Only one system of channels is used. This reduces costs, allows standard components to be used, keeps the size of the oven reasonable and allows a single temp. oven to be converted. The temp. distribution is even in the group at lower temp.