Heat exchanger
AssigneePower Shaft Engine, Limited Partnership
InventorAlbert J. Molignoni
Life of this patent
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Abstract
This disclosure relates to a heat exchanger including a plurality of cylindrical walls that are joined together to form at least one annular chamber. A plurality of tubes spiral through the chamber, each of the tubes forming a coil and the coils being axially separated. A fluid is moved in one direction through the coiled tubes, and simultaneously another fluid is moved through the chamber, thereby producing a transfer of heat between the two fluids. In the instance where the heat exchanger is used as a boiler or steam generator, the fluid in the tubes is water or water vapor, and the fluid in the chamber is hot exhaust gases from a burner mounted at the center of the exchanger.
Claims10
A heat exchanger comprising wall means including concentric cylindrical first and second walls forming at least one annular chamber, a plurality of tubes positioned in said chamber, said walls having a central axis and each of said tubes spiraling about said axis, said tubes being spaced apart in the direction of said axis and each of said tubes forming a generally flat coil in said chamber, each of said tubes having outer and inner ends adapted to be connected to means for flowing a first fluid through said tubes, and said wall means having inlet and outlet openings formed therein enabling a second fluid to be flowed through said annular chamber and around said tubes.
A heat exchanger comprising wall means including concentric cylindrical outer, intermediate and inner walls forming an annular exterior chamber and an annular interior chamber, each of said outer, intermediate and inner walls having at least one opening formed therein, a plurality of tubes extending through said openings, each of said tubes spiraling and forming a coil in said exterior chamber and forming another coil in said interior chamber, said coils being spaced apart in the direction of the axis of said spiral.
Dependencies are inferred from the claim text.