WATER-HEATING BOILER Russian patent published in 2013 - IPC F24H1/00 

FIELD: power engineering.

SUBSTANCE: in a water-heating boiler, comprising a body with a flue, a water jacket, nozzles of water drain and supply in upper and lower parts of the jacket, accordingly, a convective bundle of tubes, a furnace with a fire grate and an ashpit, the body comprises an upper part, the water jacket of which is formed with external and internal shells with stiffening ribs arranged in the water jacket on the rear wall in parallel to the base and perpendicularly to the latter from the specified stiffening rib to the convective bundle of tubes, along side walls with a rise of 3-5° to the horizontal line, in the middle of the front wall above and under the loading door perpendicularly to the base and the lower part lined with a refractory brick, arranged above the ashpit with a burning controller, and the convective bundle is installed in the flue between the rear and the front walls with rise at the angle of 3-5° to the horizontal line with a box with a cover arranged above it and a square bend with a slide gate.

EFFECT: development of a cost-effective and universal water-heating boiler adapted for operation at different types of solid low-grade fuel and having a high efficiency ratio.

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