Draught regulator for heater - has opening in side of chimney controlled by obturator to reduce heat losses

摘要

The draught regulator is to stop, or reduce, heat losses on the chimney side of a heater. It has a stop in one or more connecting channels between the heater and chimney. In these, on the chiminey side, is an opening, covered in the open position of the stop. Covering is initiated by the stop actuator. The stop (5) actuator, the opening (8) and its closing obturator (7) are on opposite sides of the connecting channel (4).