Patent ID: 9677759
Date: 2017-06-13
CPC Classifications: F23D

Claim:
1. A premix gas burner of an air/gas mixture, comprising the following components: ventilating means for sending air and the air/gas mixture to a combustion head; means for regulating an inlet passage of combustible gas; a system for mixing the air and the combustible gas comprising localized pressure loss means; and the combustion head provided with a device for igniting the air/gas mixture and for detecting the presence of a flame; wherein said mixing system comprises a plurality of venturi channels for mixing the air with the combustible gas; wherein at least one gauged mixing channel is provided with first plugging means for adjusting a rate of flow of the air/gas mixture through said at least one gauged mixing channel; wherein said first plugging means has a first weight and a first shape suitable for opening a passage in the at least one gauged mixing channel to the air, or to the air/gas mixture in a sequence and with pressure difference values higher than a predefined minimum; wherein the at least one gauged mixing channel provided with said first plugging means is further provided with second plugging means having a second weight and a second shape suitable for opening the inlet passage in said at least one gauged mixing channel in conjunction with the opening of said first passage in the at least one gauged mixing channel by the first plugging means; and wherein each gauged mixing channel provided with the first plugging means is provided with the second plugging means, respectively.