| 摘要 |
The shaft (2) of a motor (1) of a burner drives the fan (3) and the oil pump (4), which convey air and oil to the mixer (5). The shaft (2) has a thread (7), which engages with an internal thread of a hub (9). Arranged on the hub (9) is a disk (8). As a result of the influence of the rotating and stopping of the shaft (2), the hub (9) and the disk (8) are moved axially to and fro, closing and opening the air inlet channel (6). The device consequently prevents an undesired cooling of the combustion chamber of the boiler by cool air currents, which flow in through the air inlet channel (6). <IMAGE> |
