Burner

摘要

A gas burner for a heater comprises a planar metal frame portion with an elongated opening defined by two longitudinal edges and by two transversal end edges, as well as a combustion membrane in the form of a tridimensional shell, connected to the frame portion along the longitudinal and transversal edges, wherein the combustion membrane has a diffuser layer, which forms an outer combustion surface made of a perforated metal sheet, and which extends between the two longitudinal edges with a single curvature out of the plane of the frame portion, and two closure portions made of metal sheet extending from the transversal edges out of the plane of the frame portion and which close end areas between the diffuser layer and the transversal edges of the frame portion.

主权项

1. A gas burner for a heater, comprising:
a planar, metal frame portion with an elongated opening defined by two longitudinal edges extending in the direction of a longitudinal axis of the burner and mutually opposite and facing, and by two end edges transversal to the longitudinal axis, a combustion membrane in the form of a tridimensional shell, connected to the frame portion along the longitudinal edges and transversal edges, said combustion membrane having: a diffuser layer forming an outer combustion surface made of a perforated metal sheet, and extending between the two longitudinal edges with a single curvature out of the plane of the frame portion, two closure portions in metal sheet extending from the transversal edges out of the plane of the frame portion and which close end areas between the diffuser layer and the transversal edges of the frame portion, wherein both closure portions and the frame portion are formed in a single piece of metal sheet, by folding the closure portions along the transversal edges of the opening.