INDUSTRIAL TUNNEL OVEN Russian patent published in 2021 - IPC F27B9/08 F26B23/10 F27D7/02 

FIELD: industrial tunnel oven.

SUBSTANCE: invention relates to an industrial tunnel oven for baking and/or drying paint on parts (15). The furnace contains an outer wall (11, 111, 211, 311), a tunnel (12) having a loading end and an opposite unloading end and designed to move the part (15) from the loading end to the discharge end of the tunnel by means of a conveyor line (13) located along the tunnel. The outer wall (11, 111, 211, 311) is made in the form of a cylinder, at least in the part that is not the lower zone, with an axis parallel to the direction of movement of the parts (15), while the oven has at least one inner wall (17 , 117, 217, 317), made in the form of a cylinder along at least the arc of the cylinder, the inner surface of which forms the sides of the tunnel (12), while in the inner wall (17, 117, 217, 317) there are inlets (18, 118, 218, 318) for the hot air to enter the tunnel, and between the inner wall (17, 117, 217, 317) and the outer wall (11 , 111, 211, 311), at least one intermediate space (30, 130, 230, 330) is formed for circulation of hot air entering the tunnel (12) through the inlet openings (18, 118, 218, 318) and / or outgoing tunnel (12). In this case, the inner wall (17, 117, 217, 317), made in the form of a cylinder along at least the arc of the cylinder, has a downward offset relative to the outer wall (11, 111, 211, 311), made in the form of a cylinder at least in a part that is not a lower zone, with an axis parallel to the direction of movement of parts (15), and the intermediate space (30, 130, 230, 330) between the inner wall (17, 117, 217, 317) and the outer wall (11, 11 , 211, 311) is made with a C-shaped cross-section, which is wider at the top of the furnace and tapers conically towards the bottom of the furnace.

EFFECT: less complex oven design, which is more efficient, is provided.

18 cl, 10 dwg