STEAM BOILER Russian patent published in 2009 - IPC F22B7/00 F28D15/02 

FIELD: heating systems.

SUBSTANCE: invention is meant for steam generation and can be used in steam boiler design. Steam boiler includes drum, furnace, steam collector, and superheater. Furnace longitudinal axis is offset downwards relative to longitudinal axis of cylindrical drum. Furnace is made in the form of hollow cylinder closed with covers on both sides, and in upper arch of which rectangular through channels are provided at some distance from each other in longitudinal and cross directions. In the above channels there inserted are heat transfer devices installed so that longitudinal axis of each of them is located in radius line of furnace and passes through centre of circle of the latter. Heat transfer devices are made in the form of heat pipes, each of which has rectangular hollow duct whereto covers are welded from above and from bellow, and inside each heat tube there is liquid filling up 1/4 of the volume, which has been supplied through the hole made in upper cover, which is closed with a plug. Lower parts of heat pipes, being heating and evaporation zones, protrude to furnace volume. Upper parts of heat pipes, being condensation zones, are located in the form of a fan in upper part of cylindrical drum and have cooling ribs.

EFFECT: invention provides more complete and faster use of generated heat, its supply to the whole volume of water and its uniform heating, increasing boiler capacity, life time.

7 dwg