GAS HOT-WATER SUPPLIER OF PARTIAL PREMIXING TYPE

摘要

PURPOSE:To obtain a miniaturized gas hot-water supplier of partial premixing type, by providing slender tubes for a secondary combustion air in a premixing chamber. CONSTITUTION:A combustion chamber 8 and a premixing chamber 3 are partitioned off by a surface combustion burner 9. Slender tubes 10 are provided from a feeding chamber 1 to the combustion chamber 8 passing through the premixing chamber 3. The ends 10a of slender tubes 10 are slightly projected from the upper surface of a burner 9. A draft by a fan 2 is fed into the premixing chamber 3 from air intake holes 7 as a primary air. The insufficient amount of air is compensated by a secondary air supplied from the feeding chamber 1 from the ends 10a, passing through the slender tubes 10, and complete combustion is taken place in the combustion chamber 8. Accordingly any problem will not occur even though the combustion chamber 8 is miniaturized.