Baking furnace and control method therefor

A baking furnace comprising:

• a front chamber having an inlet disposed in a first space,
• a heating chamber connected to said front chamber through an opening and having an outlet disposed in a second space whose pressure is lower than that of the first space,
• transfer means disposed in said front chamber and said heating chamber for transferring a material to be heated,
• heating means disposed in the vicinity of said heating chamber,
• air discharge means connected to said front chamber,
• differential pressure detecting means disposed outside said heating chamber for detecting the difference in pressure between said first and second spaces, and
• discharge control means for controlling the operation of said air discharge means to prevent an air flow caused by a differential pressure between said first and second spaces from flowing into said heating chamber.

A baking furnace comprising:

• a front chamber whose inlet disposed in a first space is provided with opening and closing means,
• a heating chamber connected to said front chamber through an opening and having an outlet disposed in a second space whose pressure is lower than that of the first space,
• heating means disposed in the vicinity of said heating chamber,
• first transfer means disposed in said front chamber for transferring a material to be heated by switching the speed between high and low,
• second transfer means disposed in said heating chamber for transferring the material at low speed,
• wherein said opening and closing means prevents an air flow caused by a differential pressure between said first and second space from flowing into the heating chamber.

A baking furnace comprising:

• a front chamber having an inlet disposed in a first space,
• a heating chamber connected to said front chamber through an opening and having an outlet disposed in a second space whose pressure is lower than that of the first space,
• transfer means disposed in said front chamber and said heating chamber for transferring a material to be heated,
• heating means disposed in the vicinity of said heating chamber, and
• an air discharge pipe having a suction port at one end thereof connected to said front chamber and an exhaust port at the other end disposed in the second space,
• wherein said discharge pipe prevents an air flow caused by a differential pressure between said first and second spaces from entering the heating chamber.

A control method for controlling a baking furnace comprising:

• a heating chamber having an inlet disposed in a first space and an outlet disposed in a second space whose pressure is lower than that of the first space, said inlet and outlet being for a material to be heated,
• transfer means disposed in said heating chamber for transferring the material to be heated which has been transferred to said heating chamber,
• heating means disposed in the vicinity of said heating chamber,
• air discharge means connected to a place in the vicinity of the inlet of said heating chamber,
• differential pressure detecting means disposed outside said heating chamber for detecting the difference in pressure between said first and second spaces, and
• discharge control means for controlling the operation of said air discharge means to prevent an air flow caused by a differential pressure between said first and second spaces from flowing into said heating chamber, said control method comprising the steps of;
• measuring the difference in pressure between said first and second spaces by said differential pressure detecting means, and
• controlling the amount of air being discharged by said air discharge means by said discharge control means according to the result of the measurement.

A control method for controlling a baking furnace comprising:

• a front chamber having an inlet disposed in a first space,
• a heating chamber connected to said front chamber through an opening and having an outlet disposed in a second space whose pressure is lower than that of the first space,
• transfer means disposed in said front chamber and said heating chamber for transferring a material to be heated,
• heating means disposed in the vicinity of said heating chamber,
• air discharge means connected to said front chamber,
• differential pressure detecting means disposed outside said heating chamber for detecting the difference in pressure between said first and second spaces, and
• discharge control means for controlling the operation of said air discharge means to prevent an air flow caused by a differential pressure between said first and second spaces from flowing into said heating chamber, said control method comprising the steps of;
• measuring the difference in pressure between said first and second spaces by said differential pressure detecting means, and
• controlling the amount of air being discharged by said air discharge means by said discharge control means according to the result of the measurement.

A control method for controlling a baking furnace comprising:

• a front chamber whose inlet disposed in a first space is provided with opening and closing means,
• a heating chamber connected to said front chamber through an opening and having an outlet disposed in a second space whose pressure is lower than that of the first space,
• heating means disposed in the vicinity of said heating chamber,
• first transfer means disposed in said front chamber for transferring a material to be heated by switching the speed between high and low, and
• second transfer means disposed in said heating chamber for transferring the material at low speed,
• wherein said opening and closing means prevents an air flow caused by a differential pressure between said first and second space from flowing into the heating chamber, said control method comprising the steps of:
• closing said opening and closing means except when a material to be heated is transferred to said front chamber, and
• transferring the material at high speed to said front chamber by said first transfer means, thereby restricting air from flowing into said baking furnace.

A baking furnace comprising:

• a front chamber having an inlet disposed in a first space,
• a heating chamber connected to said front chamber through an opening and having an outlet disposed in a second space whose pressure is lower than that of the first space,
• transfer means disposed in said front chamber and said heating chamber for transferring a material to be heated,
• heating means disposed in the vicinity of said heating chamber, and
• an air discharge pipe having a suction port at one end thereof connected to said front chamber and an exhaust port at the other end disposed in the second space, and having a cross-sectional area that is larger than that of the opening.