MACHINE DE FABRICATION DE PAPIER DU TYPE PAPIER DE SOIE

摘要

A machine for manufacturing paper of the tissue type with a paper drying region (7) which comprises a Yankee drying cylinder (8), on which the paper being processed passes. According to the invention, the Yankee cylinder (8) comprises a substantially cylindrical side wall (11), which can rotate about the axis of a shaft (12) which passes axially through the Yankee cylinder (8). The shaft (12) supports, within the side wall (11), at least one air-stream burner device (18) which comprises a burner body (19) which has a longitudinal extension that is substantially parallel to the axis of the shaft (12) and is provided, on its side directed toward the internal surface of the side wall (11), with a plurality of openings (20) for the outflow of the combustible gas and of the oxidizing air, in order to generate a plurality of flames (21) in heat exchange relationship with the internal surface of the side wall (11). The burner device (18) is provided with an assembly (25) for igniting the flames (21) and with means (26) for detecting the presence of flames (21). Multiple passage openings (28) are formed in the shaft (12) and communicate with a discharge channel (29) which is extended axially along at least one portion of the shaft (12), for the outflow of the combustion gases from the Yankee cylinder (8).