Rotary tunnel oven with external cooling channels - has longitudinal cooling pipes held on tunnel stiffening hoops

摘要

The rotary tunnel oven has a number of cooling pipes which are held on the outside circumference of the oven by brackets. The mounting elements of these brackets stiffen the tunnel and reduce the tunnel deformations. The rotating tunnel oven has a number of cooling tubes which are held in clamps which are not connected to each other so that the tubes held by them are able to expand and contract freely in the longitudinal and radial direction. The clamps are held on a ring shaped strap on the oven. One of the clamps for a cooling tube can be fixed and the other one can be a floating clamp which accommodates longitudinal movements of the cooling tube.