Tunnel oven uses gas in cooling zone that is fed back from heating zone and metered according to oxygen content in oven detected by at least one measurement device

摘要

The turned oven has a heating zone, a burner zone and a cooling zone through which the cooked items are passed in succession. The cooling zone at least partly uses exhaust gas from the heating zone extracted via a feedback arrangement. The gas fed back from the heating zone is metered according to the oxygen content in the oven detected by at least one measurement device.