Liquid heaters and vaporizers – Stand boiler – Fluid fuel burner
Reexamination Certificate
2007-12-04
2007-12-04
Wilson, Gregory (Department: 3749)
Liquid heaters and vaporizers
Stand boiler
Fluid fuel burner
C122S015100, C122S033000
Reexamination Certificate
active
10554273
ABSTRACT:
A condensation heat exchanger adapted to interface with a gas or fuel-oil burner, the condensation heat exchanger including two coaxial tube bundles placed end-to-end, one of which acts as primary exchanger and the other of which acts as secondary exchanger. Each of these bundles include at least one of a tube or of a group of tubes arranged end-to-end, forming a helical coil, in which the wall of the tube(s) is produced from a material that is a good conductor of heat and has a flattened, oval cross section, the major axis of which is perpendicular or approximately perpendicular to the axis of the helix. The width of the gap separating two adjacent turns is constant and smaller than the thickness of the cross section, the bundles being mounted securely inside a gas-impermeable jacket.
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WO 02/33316 A1.
Giannoni Rocco
LeMer Joseph
Foley & Lardner LLP
France Giannoni
Giannoni Rocco
LeMer Joseph
Wilson Gregory
LandOfFree
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