US 4,016,929 AGranted

Heat-exchanger

AssigneePfluger Apparatebau GmbH & Co. KG

InventorsUlrich Pfluger, Klemens Waterkotte

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Abstract

A heat-exchange arrangement includes a housing which has an inner surface defining a first flow path for a fluid to undergo heat-exchange. The inner surface of the housing comprises a pair of substantially parallel surface portions which bound the first flow path along the flow direction so that the first flow path is of substantially constant width along the flow direction. A plurality of spaced conduits is arranged in the first flow path and defines a series of second flow paths for a medium to undergo heat-exchange with a fluid flowing in the first flow path. The conduits are arranged such that substantially the same predetermined minimum distance separates the most closely spaced ones of the conduits. A plurality of baffles in the first flow path serves to regulate the flow pattern of a fluid flowing in the first flow path. The baffles are arranged in such a manner that, in the region between two adjacent ones of the baffles, the projected free flow cross-section of the first flow path as determined in a plane substantially paralleling the conduits is substantially equal to the projected free flow cross-section of the first flow path as determined in a plane substantially normal to the conduits. The arrangement outlined permits a more uniform heat-exchange than was possible heretofore to be achieved. In particular, the arrangement makes it possible to insure that the heat-exchange effect for any one of the conduits is approximately the same as for any other conduit.

Claims12

Dependent claims

A heat-exchange arrangement, comprising a housing of substantially rectangular cross-sectional configuration having an inner surface which defines a first flow path for a fluid to undergo heat-exchange;

a plurality of spaced, substantially parallel conduits in said first flow path defining a series of second flow paths for a medium to undergo heat-exchange with a fluid flowing in said first flow path, said conduits being arranged such that the most closely adjacent ones thereof are spaced from one another by substantially the same predetermined distance and such that the spacing between said inner surface and the conduits most closely adjacent thereto substantially equals said predetermined distance;
at least one wall in said housing, said one wall bounding said first flow path at a longitudinal end thereof;
and a plurality of axially spaced baffles in said first flow path for regulating the flow pattern of a fluid flowing in said first flow path, adjacent ones of said baffles, as well as said wall and the baffle adjacent thereto, defining with one another flow regions for a fluid flowing in said first flow path, and each of said baffles having an edge which is spaced from said inner surface and together with the latter defines a space connstituting a boundary area between the respective neighboring regions, said baffles being arranged in such a manner that a first projected free flow cross-section of said first flow path as determined in any one of said regions approximately equals a second projected free flow cross-section of said first flow path as determined at a boundary area for said one region, and said first projected free flow cross-section being determined in a plane substantially parallel to said conduits whereas said second projected free flow cross-section is determined in a plane substantially normal to said conduits. component

Dependencies are inferred from the claim text.