Back to results
US 9,958,215 B2Granted
Heat transfer surface with nested tabs
AssigneeDana Canada Corporation
InventorsAndrew Buckrell, Michael Bardeleben
Life of this patent
Estimating the term…
Abstract
A heat transfer surface for a heat exchanger has a corrugated member having parallel spaced apart ridges and planar fin surfaces extending the ridges. Tabs are formed in the planar fin surfaces for forming counter-rotating vortices in the fluid flowing over the heat transfer surface, the tabs being lifted out of the surface of the planar fin surface and extending into or nesting within the openings formed by the corresponding tabs in the adjacent planar fin surface so as to achieve high fin density.
Claims15
A heat transfer surface for a heat exchanger comprising:
- a corrugated member having a plurality of parallel, spaced apart upper and lower ridges and planar fin surfaces extending therebetween;
- each corrugation of said corrugated member comprising either an upper or lower ridge and two planar fin surfaces extending from the corresponding upper or lower ridge;
- the planar fin surfaces being formed with a plurality of spaced apart tabs, each tab having one attached base and a free end projecting out of the plane of the corresponding planar fin surface, wherein the tabs are triangular, each said tab having a tip in the form of said free end;
- a plurality of triangular openings formed in the planar fin surfaces, the plurality of openings formed by the tabs projecting out of the planar fin surface;
- wherein the free ends of the tabs formed in one of the planar fin surfaces extend into the openings formed in an adjacent planar fin surface;
- wherein the free end of each said tab is attached to the planar fin surface only through said one attached base;
- wherein the heat transfer surface has a leading edge with respect to a direction of incoming flow defined by an end edge of the planar fin surfaces;
- and
- wherein the tip of each said tab is oriented toward the leading edge relative to the attached base.
6 more elements
A heat exchanger comprising:
- a plurality of stacked tubular members extending in spaced apart generally parallel relationship;
- a first set of fluid flow passages defined by said plurality of stacked tubular members;
- a second set of fluid flow passages formed between adjacent tubular members;
- a pair of inlet and outlet manifolds in communication with said first set of fluid flow passages;
- a plurality of heat transfer surfaces disposed in said second set of fluid passages between adjacent tubular members;
- each of said heat transfer surfaces comprising:
- a corrugated member having a plurality of parallel, spaced apart upper and lower ridges and planar fin surfaces extending therebetween;
- each corrugation of said corrugated member comprising either an upper or lower ridge and two planar fin surfaces extending from the corresponding upper or lower ridge;
- the planar fin surfaces being formed with a plurality of spaced apart tabs, each tab having one attached base and a free end projecting out of the plane of the corresponding planar fin surface, wherein the tabs are triangular, each said tab having a tip in the form of said free end;
- a plurality of triangular openings formed in the planar fin surfaces, the plurality of openings formed by the tabs projecting out of the planar fin surface;
- the free ends of the tabs formed in one of the planar fin surfaces extending into the openings formed in an adjacent planar fin surface;
- wherein the free end of each said tab is attached to the planar fin surface only through said one attached base;
- wherein the heat transfer surface has a leading edge with respect to a direction of incoming flow defined by an end edge of the planar fin surfaces;
- and
- wherein the tip of each said tab is oriented toward the leading edge relative to the attached base.
12 more elements
Dependencies are inferred from the claim text.