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US 2020/0049432 A1Published application
Fluid Flow Guide Insert for Heat Exchanger Tubes
AssigneeRheem Manufacturing Company
InventorAtilhan Manay
Life of this patent
Estimating the term…
Abstract
A heat exchanger tube insert for use in a heat exchanger tube located within a fuel fired apparatus or non-fired storage tank heat exchanger. The heat exchanger tube insert comprise a central rod, a cap, and at least two protruding helical guides that are configured to direct a flow of heated working fluid around the inner circumference of the heat exchanger tube.
Claims20
A heat exchanger tube comprising:
- a heat exchanger tube insert positioned within the heat exchanger tube, wherein the heat exchanger tube insert comprises:
- a central rod,
- a cap covering one end of the central rod;
- and
- a protruding guide positioned helically around an outer surface of the central rod and extending a full width of an annulus between the central rod and an inner surface of the heat exchanger tube.
2 more elements
A fuel-fired water heater comprising:
- a water tank;
- a burner assembly configured to generate a heated working fluid;
- a heat exchanger positioned in the water tank, the heat exchanger comprising
- a heat exchanger tube, wherein the heat exchanger tube is configured to receive the heated working fluid from the burner assembly, and
- a heat exchanger tube insert positioned within the heat exchanger tube comprising a central rod, a cap covering one end of the central rod, and a protruding guide positioned helically along an outside of the central rod and which extends a full width of an annulus between the central rod and an inner surface of the heat exchanger tube;
- and
- an exhaust configured to receive the heated working fluid from the heat exchanger tube.
4 more elements
A fuel-fired furnace comprising:
- a fuel source;
- a burner assembly configured to generate a heated working fluid;
- a heat exchanger comprising
- a heat exchanger tube, wherein the heat exchanger tube is configured to receive the heated working fluid from the burner assembly, and
- a heat exchanger insert positioned within the heat exchanger tube comprising a central rod, a cap covering one end of the central rod, and a protruding guide positioned helically along the outside of the central rod and extending a full width of an annulus between the central rod and an inner surface of the heat exchanger tube;
- a fan positioned to move air over an outer surface of the heat exchanger tube;
- and
- an exhaust configured to receive the heated working fluid from the heat exchanger tube.
5 more elements
Dependencies are inferred from the claim text.