| 摘要 |
The object of the invention is to provide a system for controlling combustion air supply, in which the air supply to the primary and secondary air supply can be infinitely variable. The object is also to enable said system to be retrofitted in furnaces having a primary and a secondary air supply. To achieve this, a housing (1) having an internal, pot-shaped insert (5) provided with radial openings (9; 10) associated with either the primary air supply (7) or the secondary air supply (8) of the furnace is located between the furnace and the supply line for the combustion air, the cross-sections of said openings being infinitely variable via a pivotally mounted (17) motion link, the rotary angle of which is restricted by one or more stops (19). The motion link (17) is actuated by means of a drive unit (13) which in turn can be controlled by a control unit (23). |
