Low maintenance fluid heater and method of firing same
AssigneePatrick A. Kaupp
InventorPatrick A. Kaupp
Life of this patent
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Abstract
A fluid heater constructed of rectangular tubing through which fluid to be heated is circulated in a circuitous path. The floor and walls of a combustion chamber of the heater are constructed of the rectangular tubing. A tubular coil stack is positioned over the combustion chamber and surrounded by coil stack chamber walls constructed of the rectangular tubing. Consequently, all surfaces of the fluid heater exposed directly to flame are constantly cooled by the fluid to be heated. A combustion unit of the fluid heater is removable to facilitate maintenance.
Claims18
A fluid heater, comprising metal tubing edge-welded together to construct a combustion chamber floor through which fluid to be heated is circulated along a circuitous path until the fluid enters a bottom of a combustion chamber wall mounted to the combustion chamber floor and forming three sides of a combustion chamber with a fourth side formed by a combustion unit, the combustion chamber wall being constructed of rectangular steel tubing edge-welded together to form a circuitous flow path up through the combustion chamber wall, and a coil stack chamber above the combustion chamber constructed of edge-welded metal tubing, the edge-welded metal tubing of the combustion chamber floor, the combustion chamber wall and the coil stack chamber providing a first part of an uninterrupted flow path between an inlet and an outlet for the fluid to be heated, and a coil stack supported above the combustion chamber within the coil stack chamber, the coil stack forming a second part of the uninterrupted flow path and providing a circuitous path for the fuel to be heated through which flue gas is exhausted from the combustion chamber.
A fluid heater, comprising:
- a combustion chamber floor constructed of rectangular steel tubing edge-welded together to form an uninterrupted, circuitous flow path for fluid to be heated;
- combustion chamber walls mounted to the combustion chamber floor and forming three sides of a combustion chamber constructed of rectangular steel tubing edge-welded together to form an uninterrupted, circuitous flow path in fluid communication with the uninterrupted, circuitous flow path through the combustion chamber floor;
- and
- a removable combustion unit that forms a fourth side of the combustion chamber.
Dependencies are inferred from the claim text.