Variably spaced wrapped fin heat exchanger
AssigneeCarrier Corporation
InventorsDale Jackson, John R. McManus
Life of this patent
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Abstract
A wrapped fin heat exchanger is disclosed having variable spacing between adjacent loops forming the heat exchanger. Various embodiments are shown wherein the spacing between adjacent loops of single row and multi-row coils is varied to provide for equal heat transfer per loop of the heat exchanger and to effectively level out the air flow per loop. The various embodiments include varied spacing over a single row coil and multiple row coils having partial second rows and second rows with varied spacing while the first row has fixed spacing.
Claims11
A wrapped fin heat exchanger made from wrapped fin tubing including a tubular fluid conducting portion and a fin portion wrapped about the tubular portion to promote heat transfer to a gas flowing thereover, said heat exchanger having the gas forced through the heat exchanger by a fan mounted adjacent one end of the heat exchanger, said fan acting to draw varying volumes of air through the heat exchanger at different locations depending upon the distance between the location and the fan, which comprises a plurality of loops of tubing arranged to form the heat exchanger, a first portion of said loops being spaced closely to impede the flow of the gas therethrough and a second portion of said loops being spced less closely than the first portion, said portions being located with the first portion being in a higher gas volume location and the second portion being in a lower gas volume location.
A wrapped fin heat exchanger formed into a generally cylindrical configuration, the heat exchanger having been formed from wrapped fin tubing including a tubular fluid conducting portion and a fin portion wrapped about the tubular portion, said heat exchanger being adapted to transfer heat energy between a fluid flowing through the tube and a gas flowing thereover in equal amounts per volume of gas flowing through different parts of the heat exchanger notwithstanding differing volumes of flow at different locations of the heat exchanger which comprises:
- a plurality of loops of tubing being positioned to form the generally cylindrical configuration;
- a first portion of said loops being closely spaced to adjacent loops, said first portion of loops being located at a portion of the heat exchanger having a higher gas volume flow rate;
- and
- a second portion of said loops being less closely spaced to adjacent loops and being located at a portion of the heat exchanger having a lesser volume flow rate.
Dependencies are inferred from the claim text.