Patent ID: 6413080
Filing Date: 2002-07-02
Classification: F23D

Abstract:
A tubular burner having a body comprising:a diffuser portion provided with openings for discharging a mixture of air and fuel fed to said body through a Venturi tube arranged inside said body, said body having a cross section shaped in such a way that a distance between an outer wall of the Venturi tube and an inner wall of said body, when measured in a radial direction of the Venturi tube, has a first value substantially constant over a first portion of a perimeter of the Venturi tube and a second value greater than said first value over a second portion of said perimeter, a chamber being defined in said second portion between the outer wall of the Venturi tube and the inner wall of said body, said mixture passing through said chamber before being discharged through said openings; wherein said chamber is delimited at a bottom thereof by laminar flow generating means for generating a substantially laminar flow of said mixture; and wherein said second value increases from ends of said second portion towards a center of said second portion.