| 摘要 |
PURPOSE:To prevent smoke dust from depositing in flues during a single-side operation by providing a pipe leading a part of exhaust gas flowing through a driving side flue to a resting side flue. CONSTITUTION:A flue 5 is provided with at least a pair of pipes 11 each having a gas take-in port 9 which introduces a part of exhaust gas from one of flues 4a and 4b and a plurality of gas blow-off holes 10 for discharging the exhaust gas introduced into the downstream, said pipe 11 being fixed at its end part to the other of the flues 4a and 4b. When an exhaust pump 3b, for example, is resting, a part of the exhaust gas in the flue 4a is taken in through the gas blow-off holes 10 within the flue 5 on the side of the flue 4b through a partition plate 7, is discharged whereby the desposition of smoke dust in the flue during the single-side operation can be prevented. |
