| 摘要 |
In a device for heat recovering flue gases flowing through an essentially vertical flue, a number of heat exchanger elements (14) are vertically suspended in the flue, in which also liquid rinsing means (23, 25) are provided above the heat exchanger elements (14) for intermittent rinsing of the same. For the collection of intermittently falling washing liquid a collecting device is provided below the heat exchanger elements (14), comprising a collecting groove extending along the inside periphery of the flue, and a flap element (7), which is turnable around a pivot (8) situated peripherally in the flue in order to be turned into essentially a vertical position (7') after a period of cleaning, so that substantially the entire cross-section of the flue defined by the collecting groove (6) is uncovered, and to be turned into a position before a period of cleaning such that it completely covers said cross-section and conducts the falling washing liquid within said cross-section away to said collecting groove (6). |
