| 摘要 |
<p>PURPOSE: To keep a deodorizing furnace under a negative pressure at the time of emergency such that a gas passage to the deodorizing furnace is shut off, etc., by a method wherein when a gas in a drying/baking furnace is made to flow to a by-pass duct due to the shutting off of the gas passage to the deodorizing furnace at the time of emergency, the gas in the deodorizing furnace is drawn by utilizing the drawn gas in the drying/baking furnace. CONSTITUTION: When a temperature which is measured by a thermometer 33 becomes an allowable maximum value, and the combustion state in a deodorizing furnace 22 is judged being abnormal, a 3-way valve 30 opens in the direction of a by-pass duct 42, and a duct 41 to the deodorizing furnace is emergently shut off. The by-pass duct 42 is connected to a suction means 44, and the suction means 44 draws a current from the by-pass duct 42, i.e., a gas of a deodorizing furnace exhaust gas duct 40 by the operation of a scavenging fan 18. The scavenging fan 18 normally feeds an atmospheric gas from a drying/baking furnace 14 to the deodorizing furnace 22, but at the time of emergency wherein the duct 41 to the deodorizing furnace is shut off, the scavenging fan 18 communicates with the deodorizing furnace exhaust gas duct 40 and draws the gas in the deodorizing furnace 22.</p> |
