Heat exchanger
AssigneeMTU Motoren-und Turbinen-Union Munchen GmbH
InventorKlaus Hagemeister
Life of this patent
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Abstract
A heat exchanger having a matrix of tubes around which hot gases flow, the matrix comprising spaced internested oval profiled tubes connected to a manifold for supply of compressed air to the tubes. The manifold is composed of a plurality of superimposed elements assembled on another in fluid-tight fashion. The profiled tubes have rectangular or square base ends which are fitted into corresponding openings in the superimposed elements.
Claims19
A heat exchanger comprising an assembly of a plurality of heat exchanger tubes for conveying a first fluid therethrough which can undergo heat exchange with a second fluid flowing around the exterior of the tubes, said tubes including portions of oval cross-section arranged in spaced relation in rows and columns in which the tubes are staggered to internest with one another, distributor means connected to said assembly for supply of said first fluid to said tubes and for receiving said first fluid therefrom after said first fluid has undergone heat exchange with said second fluid, said distributor means comprising inlet and outlet ducts spaced from one another, each duct being constituted as a pipe including a plurality of abutting, longitudinal elements mounted on one another in sealed relation, said elements having abutting surfaces provided with recesses which register with one another and defined openings receiving said tubes, said tubes including base ends of polygonal cross-section engaged in said openings.
A heat exchanger as claimed in claim 19 wherein said base ends of said tubes are rectangular having longer and shorter sides, the longer side of the ends of the tubes extending lengthwise of the pipes, said portions of the tubes of oval cross-section being arranged with the major axes thereof substantially parallel to said pipes.
Dependencies are inferred from the claim text.