Drying furnace with first and second hot air supply ports

A drying furnace in which a plurality of drying areas is continuously provided along a longitudinal direction of the drying furnace, to blow hot air to a vehicle body while being conveyed in the longitudinal direction within a furnace shell, and then to dry a coating film applied to the vehicle body, characterized in that the plurality of drying areas comprises:

• a first hot air supply port arranged at a position below the vehicle body in the furnace shell to discharge hot air diagonally upward;
• a second hot air supply port arranged at a position higher than the first hot air supply port in the furnace shell to discharge hot air diagonally downward;
• and
• an exhaust port arranged at a position lower than the first hot air supply port and the second hot air supply port in the furnace shell to discharge hot air to an outside of the furnace shell
• characterized in that the first hot air supply port and the second hot air supply port are both configured to include a nozzle, wherein the first nozzle constituting the first hot air supply port has a suction effect that entrains surrounding air in the furnace shell.

A drying furnace in which a plurality of drying areas is continuously provided along a longitudinal direction of the drying furnace, to blow hot air to a vehicle body while being conveyed in the longitudinal direction within a furnace shell, and then to dry a coating film applied to the vehicle body, characterized in that the plurality of drying areas comprises:

• a first hot air supply port arranged at a position below the vehicle body in the furnace shell to discharge hot air diagonally upward;
• a second hot air supply port arranged at a position higher than the first hot air supply port in the furnace shell to discharge hot air diagonally downward;
• and
• an exhaust port arranged at a position lower than the first hot air supply port and the second hot air supply port in the furnace shell to discharge hot air to an outside of the furnace shell
• characterized in that the first hot air supply port and the second hot air supply port are both configured to include a nozzle, wherein the second nozzle constituting the second hot air supply port has an effect of allowing hot air to advance straightly.

A drying furnace in which a plurality of drying areas is continuously provided along a longitudinal direction of the drying furnace, to blow hot air to a vehicle body while being conveyed in the longitudinal direction within a furnace shell, and then to dry a coating film applied to the vehicle body, characterized in that the plurality of drying areas comprises:

• a first hot air supply port arranged at a position below the vehicle body in the furnace shell to discharge hot air diagonally upward;
• a second hot air supply port arranged at a position higher than the first hot air supply port in the furnace shell to discharge hot air diagonally downward;
• and
• an exhaust port arranged at a position lower than the first hot air supply port and the second hot air supply port in the furnace shell to discharge hot air to an outside of the furnace shell;
• wherein the first hot air supply port is arranged at a position of a floor-back level of the vehicle body, and the second hot air supply port is arranged at a window level position of the vehicle body;
• wherein the first hot air supply port and the second hot air supply port are both configured to include a nozzle, wherein a first nozzle constituting the first hot air supply port has a suction effect that entrains surrounding air in the furnace shell and a second nozzle constituting the second hot air supply port has an effect of allowing hot air to advance straightly,
• wherein the first nozzle is configured so that hot air is discharged diagonally upward from the first hot air supply port so as to dry the coating film of mainly external parts including an outer floor side of the vehicle body;
• and
• wherein the second nozzle is configured so that hot air is discharged diagonally downward from the second hot air supply port, wherein hot air discharged by the second nozzle is introduced into a room through a window of the vehicle body, so as to dry the coating film of mainly internal parts including an inner floor portion of the vehicle body.