METHOD FOR CONTROLLING THE DELIVERY OF A COMBUSTIBLE AIR-GAS MIXTURE TO A BURNER DEVICE

摘要

A method for controlling the delivery of an air-gas mixture to a burner device comprising the stages of maintaining a virtually constant ratio between the flows of air and gas delivered to the mixing zone (5) in the range of variation in output, maintaining the air pressure difference between the mixing zone and the zone upstream of the air delivery cross-section (3a) within the range of variation in output virtually identical to the gas pressure difference between the mixing zone and the zone upstream of the gas delivery cross-section (4a). The areas of the crosssections (3a, 4a) can be selectively varied maintaining the ratio between the surface areas of the cross-sections virtually constant so that as the air and gas flows are varied in proportion to the corresponding air and gas delivery crosssections the ratio between the air and gas flows is maintained virtually constant.