Patent ID: 9612018
Date: 2017-04-04
CPC Classifications: F23D,F24C

Claim:
1. A gas burner for a domestic cooktop, of the type comprising: a burner cup suitable to be fixed to said cooktop and provided with at least part of the structure for at least one primary-air gas mixer, a burner body joined to said burner cup, said burner body comprising at least part of the structure for at least one primary air-gas mixture delivery chamber, a burner cover joined to said burner body to complete said at least one primary-air gas mixture delivery chamber, as well as at least one flame-spreader that is made in one piece with said burner cover, wherein said burner cover and said at least one flame-spreader are made of a steel, or iron, or an iron-alloy sheet, and wherein said steel or iron or iron-alloy sheet is a bent sheet that has thickness ranging from 1.3 to 3 mm, and centering means for said burner cover, wherein said at least one primary air-gas mixer is a Venturi tube having a longitudinal axis aligned horizontally and along which a gas and air mixture flows, said Venturi tube being made in said burner cup, said burner body comprising at least one transit opening fluidly connecting the outflow section of said Venturi tube to said primary-air gas mixture delivery chamber, and wherein said at least one flame-spreader comprises at least one of holes and slits that vary in outflow area, such that the at least one of holes and slits of the at least one flame-spreader proximate to said transit opening have the smallest outflow area and the at least one of holes and slits of the at least one flame-spreader furthest from said transit opening have the greatest outflow area when the at least one flame-spreader is centered on said burner body by said centering means.