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US 11,906,159 B2Granted
Frustoconical combustion chamber for a fluid heating device and methods for making the same
AssigneeRheem Manufacturing Company
InventorsAmin Monfared, Leonard E. Chambers, Miguel Mendoza, Arash Jafari, Babak Bagheri, Bruce Hotton
Life of this patent
Estimating the term…
Abstract
The disclosed technology includes a fluid heating device including a frustoconical combustion chamber and a heat exchanger that can include heating tubes. The combustion chamber can have a first end and a second end that is in fluid communication with the heating tubes. The surface area of the second end of the combustion chamber can be larger than the surface area of the first end of the combustion chamber.
Claims19
A fluid heating device comprising:
- an outer shell having a fluid inlet and a fluid outlet, the outer shell defining a fluid heating volume for heating fluid;
- a heat exchanger including heating tubes that are each fluidly isolated from the fluid heating volume, the heat exchanger being concentrically disposed with respect to the outer shell such that a channel is formed between an inner surface of the outer shell and an outer surface of the heat exchanger;
- and
- a combustion chamber having a substantially frustoconical shape in fluid connection with the heating tubes of the heat exchanger, the combustion chamber including:
- a first end having a first surface area;
- a second end having a second surface area that is larger than the first surface area, the second end being in fluid connection with the heating tubes of the heat exchanger;
- and
- at least one angled sidewall including an angled portion that extends along a portion of a height of the combustion chamber,
- wherein the angled portion has an angle relative to the first end of from 90.5 degrees to 120 degrees, and
- wherein the fluid outlet is positioned in the outer shell at the second end of the combustion chamber.
7 more elements
A method for manufacturing a fluid heating device, the method comprising:
- providing an outer shell including a fluid inlet and a fluid outlet;
- positioning a heat exchanger concentrically within the outer shell such that a channel is formed between an inner surface of the outer shell and an outer surface of the heat exchanger, the heat exchanger including an inlet tube sheet disposed proximate a first end of the heat exchanger, an outlet tube sheet disposed proximate a second end of the heat exchanger, and a plurality of heating tubes extending between the inlet tube sheet and the outlet tube sheet;
- providing a combustion chamber having a substantially frustoconical shape, a first end that has a first surface area, second end that has a second surface area larger than the first surface area, wherein the fluid outlet is positioned in the outer shell at the second end of the combustion chamber, and at least one angled sidewall including an angled portion that extends along a portion of a height of the combustion chamber, the angled portion having an angle relative to the first end of from 90.5 degrees to 120 degrees;
- attaching the combustion chamber to the heat exchanger such that the combustion chamber is in fluid communication with the plurality of heating tubes;
- and
- connecting a blower system to the first end of the combustion chamber, the blower system being configured to provide an air/fuel mixture to the combustion chamber.
3 more elements
Dependencies are inferred from the claim text.