Spiral heat exchanger
AssigneeAteliers De Construction De Thermo-Echangeurs SA
InventorHubert Antoine
Life of this patent
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Abstract
A coiled heat exchanger and a method of making a coiled heat exchanger including a pair of sheets coiled together to form a core having opposite faces. A first sheet has at least one edge extending substantially coplanar with the sheet. A second sheet has at least one edge having alternating portions along the edge being respectively raised and unraised with respect to the plane of the sheet such that when the sheets are coiled together the at least one edge of the second sheet is configured to abut portions of the at least one edge of the first sheet at locations corresponding to the alternating raised portions. These edges and their alternately abutting portions form openings in the form of angular sectors on a face of the core that are configured to pass fluid therethrough.
Claims22
A coiled heat exchanger, comprising:
- a first sheet having opposed edges with at least one of the edges extending substantially coplanar with the first sheet;
- and
- a second sheet having at least one edge with alternating portions along the edge being respectively raised and unraised with respect to a plane of the second sheet, said at least one edge of the second sheet being configured to abut portions of the at least one edge of the first sheet at locations corresponding to the alternating raised portions when the first and second sheets are coiled together.
A heat exchanger formed by coiling a pair of sheets, comprising:
- a cylindrical core having two opposite faces with a plurality of openings in the form of angular sectors around a longitudinal axis of the core, said core formed by coiling a first sheet having opposite edges with at least one of the edges extending substantially coplanar with the first sheet with a second sheet having at least cone edge with alternating portions along the edge being respectively raised and unraised with respect to a plane of the second sheet, said raised portions of the edge of the second sheet abutting portions of the edge of the first sheet and the angular sector openings being partially defined by the abutting portions of the edges of the first and second sheets.
A cylindrical heat exchanger made by coiling a pair of sheets, comprising:
- a pair of adjacent sheets coiled together so as to form angular sectors on opposite faces of the cylindrical heat exchanger, said angular sectors being formed by alternating raised portions on the edge of one sheet abutting portions of the edge of the other sheet, said pair of adjacent sheets further including
- ripples extending substantially parallel to the longitudinal axis of the cylindrical heat exchanger on one sheet of said pair of sheets, and
- ripples extending substantially perpendicular to the longitudinal axis of the cylindrical heat exchanger on the other sheet of said pair of sheets, a sum of the heights of the corresponding ripples on each face being a constant along an axial length of the heat exchanger from one face to the other and said constant being equal to a height of the alternating raised portions on the edge of the second sheet as measured from a plane of the second sheet, wherein the two sheets are one of joined and brazed at contact points of crests of the respective ripples of each sheet.
A cylindrical heat exchanger made by coiling a pair of sheets, comprising:
- a pair of adjacent sheets coiled together so as to form angular sectors on opposite faces of the cylindrical heat exchanger, said angular sectors being formed by alternating raised portions on the edge of one sheet abutting portions of the edge of the other sheet, said pair of adjacent sheets further including
- fins extending substantially parallel to the longitudinal axis of the cylindrical heat exchanger on one sheet of said pair of sheets, and
- fins extending substantially perpendicular to the longitudinal axis of the cylindrical heat exchanger on the other sheet of said pair of sheets, a sum of the heights of the corresponding fins on each face being a constant along an axial length of the heat exchanger from one face to the other and said constant being equal to a height of the alternating raised portions on the edge of the second sheet as measured from a plane of the second sheet,
- wherein the two sheets are one of joined and brazed at contact points of crests of the respective fins of each sheet.
Dependencies are inferred from the claim text.