| 摘要 |
A burner head for burning of solid fuels, such as straw, peat, wood chips, coal, etc., comprising an opening for lead-in of the fuel and an opening for discharge of flue gases, and whereby the burner head comprises two tubes having substantially parallel axes, whereby one of the tubes is positioned coaxially or with eccentrically positioned axis in relation to the other tube axis and inside the other tube. To achieve that the thermal expansions resulting from internal stresses in the materials of the tubes do not require either employment of too expensive or too difficult shapable materials to the manufacturing of these tubes or that the life times of the tubes are not too short, an arrangement is described, whereby at least one of the tubes (7) is divided into sections (7A, 7B, 7C) being loosely and movably held to each other by means of loose connecting elements (77AB, 77BC). Details adapted to this arrangement relating to the tubes (6, 7, 7A, 7B, 7C) are furthermore described, including features relating to the fastening of these tubes. |
