EOS Versatility of AM a boost to the making of compact burners
Germany – Euro-K designs and builds micro-burners that optimise combustion of gaseous and liquid fuels featuring EOS technology. The company is based in Berlin and Cottbus, Germany.
Liquid fuels are a challenge for the designers and manufacturers of burners and in working to increase the effectiveness of its burners, Euro-K has been concentrating on innovative burner geometry to raise combustion efficiency and lower exhaust gas emissions. To do this the company has harnessed the versatility of metal additive manufacturing (AM) technology from UK-based EOS Electro Optical Systems.
Liquid fuels are a challenge
The challenge, as Euro-K explains is that whereas with gaseous fuels the formation of a combustible fuel / air mixture is relatively straightforward, liquid fuels present a challenge, as the surface area must be greatly increased. This is generally done by projecting the fuel in a very fine spray using pneumatic, mechanical or pressure differential principles. Consequently, the availability of burners that support the use of liquid as well as gaseous fuels is limited.
When the company set out to produce a compact micro-burner that can handle both types of fuel efficiently, it found that design freedom was greatly enhanced using AM, with which it has long been familiar, avoiding the constraints of conventional metal-cutting and the uneven cooling of castings. The technology is able to produce small-batch sizes economically and allows burner-assembly costs to be reduced by 20 %, Euro-K said.
One of the processes Euro-K uses is an EOS M 290 metal AM system. For the design work, CAD software is used that allows data to be transferred quickly and easily to the EOS system following the definition of the final shape and size of the burner.