초록 ▼

A water heater includes a water tank, a combustion chamber below the tank and communicating with the flue tube, and a flue system. The flue system includes a flue tube, and a cruciform fin metallurgically bonded to the flue tube wall and dividing the flue tube into four flue chambers extending subst

A water heater includes a water tank, a combustion chamber below the tank and communicating with the flue tube, and a flue system. The flue system includes a flue tube, and a cruciform fin metallurgically bonded to the flue tube wall and dividing the flue tube into four flue chambers extending substantially parallel to the longitudinal axis of the flue tube. The flue system also includes a removable baffle hanging in each flue chamber. The baffles include adjustable turbulation surfaces to control the quality of combustion in the water heater.

대표청구항 ▼

[ What is claimed is:] [1.]1. A water heater comprising:a tank for holding water;a combustion chamber;a flue tube having a longitudinal axis and extending through said tank along said longitudinal axis and communicating with said combustion chamber, said flue tube having an inner surface;a first fin

[ What is claimed is:] [1.]1. A water heater comprising:a tank for holding water;a combustion chamber;a flue tube having a longitudinal axis and extending through said tank along said longitudinal axis and communicating with said combustion chamber, said flue tube having an inner surface;a first fin positioned within said flue tube, said fin having first and second edges that are both at least partially metallurgically bonded to said inner surface to divide said flue tube into first and second flue chambers extending substantially parallel to said longitudinal axis; andfirst and second removable baffles positioned within said first and second flue chambers, respectively, said first and second baffles each having at least one turbulation surface.