HOT-WATER BOILER Russian patent published in 2006 - IPC F24H1/44 

FIELD: hot water supply systems.

SUBSTANCE: hot-water boiler comprises housing, furnace chamber, water jacket defined by vertical walls of the housing and furnace chamber, burning member, and branch pipe for supplying cold water arranged in the bottom section of the furnace chamber. A heat exchanger mounted above the burning member is made of tube bank which are inclined and secured to the opposite walls of the furnace chamber to define inlet and outlet collectors. The inlet collector underlies the outlet one and is connected with the water jacket through the overflow passage made in the top part of the water jacket. The outlet collector is connected with the branch pipe for discharging hot water. To increase the area of heat exchange, an additional heat exchanger made of tube bank is mounted above the heat exchanger. The water jacket is connected with the inlet collector through the drain vessel, and the outlet collector is connected with the branch pipe for discharging hot water through the discharging vessel. The top section of the water jacket is provided with the passage for air discharge.

EFFECT: enhanced efficiency.

9 cl, 8 dwg