| 摘要 |
The present invention relates to a solid fuel boiler, comprising a fire place with a burner, a flue gas passage with a flue gas outlet, an inlet for cold air, a convection space for heat exchange of cold air with the flue gas passage, and an outlet for hot air, wherein the flue gas passage comprises a tube kit with a plurality of tubes arranged adjacent to each other to create a flow space for air between the tubes, wherein at least one of said tubes is arranged so that it extends obliquely upwards in an acute angle in relation to the vertical line of the boiler from a lower attachment point to an upper attachment point.
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