Circular heat exchanger
AssigneeSolar Turbines Incorporated
InventorCharles T. Darragh
Life of this patent
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Abstract
Circular heat exchangers have been used to increase the efficiency of engines by absorbing heat from the exhaust gases and transferring a portion of the exhaust heat to the intake air. The present heat exchanger is built-up from a plurality of preformed involute curved cells stacked in a circular array to provide flow passages and for the donor fluid and the recipient fluid respectively. The stacked cells are welded along a portion of their edges to secure them in the stacked circular array. Each of the cells have a plurality of corners with the core presenting corresponding corners after the cells are welded together. In order to reinforce the core against thermal stresses and forces generated by pressures of the fluids, circumferential welds are provided at each of the corners.
Claims5
A heat exchanger including a core having a plurality of heat recipient passages and a plurality of heat donor passages therein, comprising:
- said core being generally circularly shaped including a plurality of stacked individual cells including a plurality of individual primary surface pleated sheets and means for spacing the sheets a preestablished distance apart are secured together, each of said cells defining one of the passages therein, the cells being secured together and adjacent cells forming the other of the passages therebetween;
- each of said cells includes a center portion having a pair of sides and a pair of wing portions being attached to the center portion at the pair of sides;
- and
- each of said cells having a plurality of corners and securing means fixedly secures at least corresponding ones of said corners of adjacent pairs of cells together.
Dependencies are inferred from the claim text.