JPS56142344A - Hot water boiler - Google Patents

Abstract

PURPOSE:To obtain a water boiler compact and with a high convection effect by providing an inclined water pipe raised at the front in a combustion chamber after an inner cylinder is positioned eccentrically downward in an outer cylinder. CONSTITUTION:An inner cylinder 1 is provided eccentrically downward in an outer cylinder is such a manner as to be a combustion chamber inside with a grate set at the bottom thereof. At the front of the inner cylinder, a fire hole lid 9 and an air intake/ash withdrawal hole 12 are provided and at an upper portion of the combustion chamber 8, several heat inducing pipes 15 are provided communicating to water chambers located after and before them in such a manner as to be lessened in the space elevated at the front and reduced to a small diameter at a position 15'' near the tip. A stack 4 is erected at the center of the top of the outer cylinder 2 and communicated to the combustion chamber 8 through a smoke storage 14. Numeral 13 indicates an exhaust damper and 5 a service tank which are communicated to the water chamber 6 between the inner cylinder 1 and the outer cylinder 2 through a water feed pipe 7.