Tunnel ovens

This type of oven is shaped like a tunnel for the products to pass through. 

Contact us for more info on this type of system or just see who your contact person is in your country.

 

International contact information

 

Function

The products pass through the oven either continuously or by power & free conveyor with stops. The tunnel oven comes in versions of L-oven and A-oven. Find illustrations of L-oven and A-oven in our Tunnel Oven leaflet here.

High air volume circulation ensures quick and very effective heat transference to the product; powerful fans distribute the heated air. This technique optimizes the process.

Our promise is a construction with a uniform and constant temperature within a few degrees. 

Temperature zones

The ovens can be divided in different temperature zones.

Temperature zones form the most optimal temperature curve for the product. This is why our design is unique and customized. It also enables us to take environmental and climate aspects into consideration.

Application and use

Tunnel ovens are used for lines in which the products are conveyed continuously or stop-go forward by the conveyor.

The most usual applications are:
• Drying oven after pretreatment line
• Curing/drying oven for liquid paint
• Curing oven for powder coating

Function

It is convection ovens in which high air circulation leads to quick and effective heat transference to the product. Powerful fans distribute the heated air through ducts in the entire oven length. This construction gives a uniform and constant temperature within a few degrees.

Temperature zones in tunnel ovens

The ovens can be divided in different temperature zones. This forms the most optimal temperature curve for the product.

Entrance / exit

The ovens are provided with highly efficient airlocks or A-locks. Both ensure good operating economics. The choice between these alternatives depends on the type of product and also the building conditions.

Heating of the oven

The ovens can be provided with direct gas heating or indirect oil/gas heating through an efficient heat exchanger. The ovens can also be provided with electrical heating.

Materials

We have a high standard for constructions. As standard the ovens are constructed of galvanized steel. As option, the inside construction parts can be produced totally or partly of mild or stainless steel. 

Insulation

The sides of the oven are constructed to get the lowest possible heat transference from the inside to the outside.

The thickness of the mineral wool insulation is adapted to the requested maximum temperature. As standard all ovens are constructed for an operation temperature of 250º C.

Maintenance

The detachable steel cassettes on the outside of the oven make it easy to check and replace the insulation material. Service of the circulation and heating units is solely and unimpeded carried out from the outside of the oven.

 

International contact information