| 摘要 |
The invention relates to an arrangement (1) for the combustion of granular, solid fuel, for example wood-flour pellets, chips and the like, comprising a preferably horizontal combustion chamber (16), a dispensing unit (3) for feeding the fuel into the combustion chamber via a fuel feed pipe (15), air inlets (22, 23) with blower (18) for the delivery of primary air (P) to the combustion chamber via at least one air duct or air chamber (24, 25) in order to produce a flow of air through the combustion chamber and the fuel for a primary combustion of the fuel to combustion gases, and for the delivery of secondary air (S) to a secondary combustion chamber (26) via a secondary air distributor (26A) in order to roduce a secondary combustion of the combustion gases formed in the primary combustion together with a common outlet (47) for the primary air, the combustion gases and the secondary air from the secondary combustion chamber to a boiler space (12) in a boiler (2) for transmitting the heat from the said primary and secondary combustion to the heat supply system of the boiler. According to the invention the secondary air distributor also comprises a fan (49) for producing an air and combustion gas vortex (50) inside the secondary combustion chamber and on out through the outlet (47) to the boiler space. The invention also relates to a method of combustion comprising such a combustion arrangement.
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