COMBUSTION APPARATUS EQUIPPED WITH MULTI LAYER CYLINDRICAL BURNER

摘要

A combustion apparatus equipped with a multi layer cylindrical burner is provided to achieve stable combustion from a low load to a high load according to a heating load required for a boiler by improving a turn-down ratio. The mixture of air and fuel is transferred to a burner(200) through a blower(100). The mixture from the blower is divided into a first distribution unit(210), a second distribution unit(220), and a third distribution unit(230). The first to third distribution units include mixing pipes(211,221,231). Control valves(410,420) are installed in the two mixing pipes among the three mixing pipes. The two valves adjust an output of the burner according to a heating load so that the mixture is supplied through at least one of the three distribution units.