Automatic variator of comburent air flow in a burner.

摘要

The invention discloses an automatic variator of the quantity of air supplied into a burner wherein said variator comprises an air lock (2; 102; 202; 302) hinged next to the opening (12) for the inlet of the combustion air from the helix (9) of the fan to the combustion chamber, which can be adjusted into position through an adjustment rod (6; 106; 206; 306), which co-operates with said air lock through a compensation unit (7; 107; 207; 307). Said compensation unit is attached to the adjustment rod and is in contact with the air lock through a contrasting element (74; 174; 274; 374) which is made to move by a temperature sensitive actuator (72; 172; 272; 372) belonging to the compensation unit. <IMAGE>