| 摘要 |
<p>ABSTRACT An air-gas mixer device, in particular for gas burners, comprises a Venturi duct (2) inside which a portion (15) with a narrow cross-section is defined and outside which a gas-distribution chamber (17) is defined, as well as gas- intakes (21a-d, 22a-d) which are formed with an orientation having a predominant axial component in the Venturi duct and which open in the wall of the narrow-sectioned portion (15), between the gas-distribution chamber (17) and the interior of the Venturi duct (2). Upstream of the Venturi duct (2), with reference to the direction of the air-flow entering the duct, there is a member (23) with stationary blading for imparting a component of rotational motion to the air entering the Venturi duct (2).</p> |
