Gas quick water heater

摘要

A gas quick water heater is disclosed which includes a heat exchanger having an annular lower manifold with a cold-water intake, an annular upper manifold with a hot-water exit, a plurality of coil-shaped heat exchanging tubes connected between the manifolds, and a baffle plate installed in the center of the heat exchanging tubes and for delaying the flow of heated air; an inner liner for closely embracing the inner surface of the heat exchanging tubes of the heat exchanger; an outer liner designed higher than the inner liner in height and for closely embracing the outer surface of the heat exchanging tubes; a lower plate for closing a lower portion between the inner and outer liners and having an air intake at the center; a swirl plate having a plurality of air intakes at the periphery and a gas hole at the center portion; a combustion barrel having a plurality of air intakes on the overall surface; an insulation member in which the top surface is closed and the lower surface is opened to form an annular air intake; and an exhaust fan for discharging burned gas through the opening of the outer liner and the exhaust port of the barrier.