PROCESS AND APPARATUS FOR THE PRODUCTION OF HEAT EXCHANGERS FROM CERAMIC FOILS

摘要

Process and apparatus for manufacturing heat exchangers from ceramic sheets, wherein different flow channels are stamped from or pressed into the sheets, and the formed sheets are joined together with a laminating agent. The stacking of the individual sheets is effected using apparatus in which the sheets are transported to the forming means, applicator means and laminating means by horizontally and vertically displaceable, rotatable and pivotable suction plates. The organic component of the ceramic sheets is expelled from the heat exchanger block obtained in two heating steps with an intermediate forming operation to bring the heat exchanger block to its final dimensions, and the block then fired between 1,200 DEG to 1,700 DEG C. The actual sintering temperature depends on the particular ceramic used, which may comprise Si3N4, SiC, cordierite and/or semiconductive barium titanate compounds.