US 12,392,485 B2
Air and gas feeder device for gas boilers
Gianmario Invernizzi, Lecco (IT)
Assigned to NORDGAS S.R.L., Costa Masnaga (IT)
Appl. No. 17/802,196
Filed by NORDGAS S.R.L., Costa Masnaga (IT)
PCT Filed Feb. 4, 2021, PCT No. PCT/EP2021/052694
§ 371(c)(1), (2) Date Aug. 25, 2022,
PCT Pub. No. WO2021/170368, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 102020000004048 (IT), filed on Feb. 27, 2020.
Prior Publication US 2023/0358397 A1, Nov. 9, 2023
Int. Cl. F23C 7/00 (2006.01); F23D 14/62 (2006.01); F23L 5/02 (2006.01)
CPC F23C 7/004 (2013.01) [F23D 14/62 (2013.01); F23D 2900/14021 (2013.01); F23D 2900/14701 (2013.01); F23L 5/02 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An air and gas feeder device for gas boilers, comprising an air-gas conveyance body comprising:
a boiler coupling face configured to be coupled to a boiler at an intake duct of a boiler;
an air intake port connected to an air discharge opening by means of an air passage, said air discharge opening leading out from said boiler coupling face;
a gas intake port, configured to be fixed to a gas dispensing duct in fluid communication with a gas discharge opening, which leads out from said boiler coupling face;
wherein the air discharge opening is coaxial to, and at least partially surrounded by, the gas discharge opening;
wherein said air passage accommodates a flow diverter configured to divert an air flow in output from the air discharge opening in the direction of the gas in output from the gas discharge opening and to impart a rotation to said air flow;
wherein said air discharge opening is formed between the flow diverter and an internal wall of the air passage.