HOT-WATER BOILER Russian patent published in 2002 - IPC

FIELD: water heating, applicable in heating systems. SUBSTANCE: the boiler has a casing and a square-shaped furnace with formation of a water jacket between them that are positioned horizontally in the ratio of the ceiling wall area to the area of each vertical wall as 1 to 10. The furnace is provided with a burner and a gas conduit, which is connected to a smoke flue. The burner and the smoke flue are positioned in the extreme sections of the furnace opposite in length, and crosspieces are vertically installed in the gas conduit across the flow of combustion products with formation of ducts for passage of combustion products alternately with the rear and front walls. The first crosspiece in the direction of flow of combustion products is installed with formation of a duct also with the ceiling wall. The branch pipe of supply of cold (circulating) water is installed on the side of the smoke flue, and the branch pipe of hot water discharge is installed in the upper part of the casing (water jacket) on the side of the burner, with a means for temperature rise installed above it. EFFECT: enhanced efficiency and reduced ejection of products of incomplete combustion into the atmosphere. 6 cl, 5 dwg