MIXING GAS HEAT GENERATOR Russian patent published in 2009 - IPC F23D14/66 F24H3/02 

FIELD: heating, fuels.

SUBSTANCE: invention relates to firing fuels (natural gas, boiler fuel) in units heating industrial and residential buildings, as well as used in production processes, e.g. drying and low-temperature warming. The proposed heat generator incorporates a metal cylindrical housing, combustion chamber, gas and air feed system and gas firing system. Recirculation section is coaxially fitted inside the combustion chamber and rigidly attached to its walls by stiffening ribs to form annular channels designed to suck combustion products in to the flame envelope root. Note that there is a clearance between the recirculation section and gas firing system. Note also that a firing stone is incorporated with the proposed generator to warm up air fed along periphery to dilute combustion products.

EFFECT: reduced content of nitrogen oxides in gas-air mix due to decrease in combustion maximum temperature.

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