Heat exchange – Radiator core type – Serially connected tube sections
Patent
1993-09-17
1995-06-20
Michalsky, Gerald A.
Heat exchange
Radiator core type
Serially connected tube sections
165151, 165182, F28D 104, F28F 132
Patent
active
054254140
ABSTRACT:
A coil assembly for use in a heat exchanger having air flowing in a predetermined direction. The coil assembly comprises a plurality of parallel linear tubes, a plurality of return tubes interconnecting the linear tubes, and a plurality of fins. Each linear tube has a central portion with an elliptical cross-section and two end portions with round female sockets having circular cross-sections. Each return tube has two end portions with circular cross-sections. Each end portion of a return tube fits into a round female socket of a linear tube regardless of the orientation of the major axes of the linear tubes. The major axis of the elliptical cross-section resides at an oblique angle with respect to the direction of air flow. Each fin comprises a planar sheet of a heat-conductive material with a plurality of holes. The central portion of a linear tube extends through each hole. Each fin securely contacts each linear tube extending therethrough such that heat transfer therebetween is enhanced. The linear tubes are oriented in a plurality of rows, each row forming a plane perpendicular with respect to the direction of air flow. The rows alternate such that the major axis of the elliptical cross-section of each linear tube in first alternating rows is oriented at a clockwise-rotated position, and the major axis of the elliptical cross-section of each linear tube in second alternating rows is oriented at a counter-clockwise-rotated position.
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Bradley, Jr. Wilson E.
Merrill Richard P.
Shriver George R.
Weinreich Robert S.
Evapco International, Inc.
Leo L. R.
Michalsky Gerald A.
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