HOT-WATER BOILER Russian patent published in 1999 - IPC

FIELD: heating systems and hot water supply systems. SUBSTANCE: hot-water boiler has shell, water supply and discharge branch pipe and surface located in shell. Furnace is provided with front, rear and lateral baffle walls connected to their upper and lower headers; bypass closed header is connected to center portion of front baffle wall. Intermediate tubular baffle wall connected to its lower and upper headers is located between one of lateral baffle walls and shell forming horizontal gas duct. One of lateral baffle walls has U-shaped form at embracing over perimeter of furnace. Headers is brought in communication by means of downtake branch pipes. Boilers is provided with additional convective panels having their own lower and upper headers. Tubular holes of headers of baffle walls and convective panels are made in staggered order with shifted centers; ends of baffle wall tubes connected to shifted holes are bent. EFFECT: enhanced operational reliability and economical efficiency of boiler due to organization of flows of heated water in all heating surfaces (baffle walls and convective panels). 4 cl, 9 dwg