Heat exchange coil and method of making
AssigneeAmerican Standard Inc.
InventorsDavid A. Gray, Donald O. Webb
Life of this patent
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Abstract
A multi-circuit arrangement for a wound coil heat exchanger and a method for making it are disclosed. The coil circuits are wound from a continuous length of spine fin tubing; locations are determined for breaking into the wound, continuous length of tubing to form adjacent circuits; the tubing is cut; the cut ends are pulled toward the manifold and downwardly so that adjacent ends angle toward each other; and transition tubes are secured to the cut ends, the tubes crossing each other to form an "X" configuration.
Claims13
A heat exchanger coil for a multiple circuit heat exchange unit comprising:
- a plurality of adjacent individual fin and tube coil circuits disposed vertically one above another, each of said individual circuits having a lower end and an upper end, the upper end of an individual coil circuit juxtaposed the lower end of the individual coil circuit disposed immediately above to form a pair of adjacent circuit ends in said heat exchange coil and the axis of each of said upper and lower circuit ends being skewed downwardly and away from the portion of the individual coil circuit from which said ends extend so that moisture on the exterior of said circuit ends flows downwardly and away from said upper and lower circuit ends;
- a first manifold;
- a second manifold;
- and
- means for connecting the upper end of each of said individual coil circuits to said first manifold and the lower end of each of said individual coil circuits to said second manifold, said connecting means intercrossed once for each of said pairs of adjacent upper and lower circuit ends said connecting means being fabricated from a metal dissimilar to the metal from which said coil circuits are fabricated.
A heat exchange coil for an air conditioning outdoor unit wound from a continuous length of finned tubing to form a desired configuration having a predetermined number of wraps, comprising:
- a plurality of helically wrapped coil circuits adjacently disposed vertically, each of said circuits including a tube and fins extending outwardly from the outer surface of said tube, the lower and upper ends of vertically adjacent circuits being disposed adjacent one another in one of said predetermined number of wraps, said adjacent ends being angularly disposed away from said coil and downwardly toward a crossing point so that moisture on the outside of a circuit end flows away from said end to prevent corrosion at said circuit end;
- a first manifold;
- a second manifold;
- and, a plurality of transition tubes fabricated from a metal dissimilar to the metal from which said coil circuits are fabricated, one of said plurality of transition tubes being attached to each of said adjacent circuit ends, said transition tubes being in flow communication with said first and said second manifolds for the upper and lower circuit ends respectively and the transition tubes of adjacent circuit ends for vertically adjacent circuits crossing to form an "X" configuration.
Dependencies are inferred from the claim text.