Cooking top with improved gas top burner

Abstract

Gas burner, as particularly intended for use in cooktops for residential food cooking applications, comprising a lower body (1), a top cap (2) closing said lower body on top, two coaxial flame rings (3,4) having the same diameter, but extending at two different heights, a single gas injector (5), a single Venturi tube (8), and a single expansion chamber (10) for the gas issuing from said single Venturi tube, said chamber being adapted to supply said two flame rings of the burner. The burner further comprises a first cylindrically-shaped hollow annular member (6) adapted to be applied vertically upon said lower body, and a second substantially planar hollow annular member (7), which is adapted to be applied upon said first annular member (6) and support said cap. The lower flame ring is supplied with gas from said expansion chamber via a plurality of ducts, which are substantially arranged within said first cylindrically shaped annular member. Said two flame rings are provided with gas outlet ports having sensibly similar cross-section areas.

Description

technical field [0001] The present invention relates to an improved gas top burner typically used in cooktops for domestic food cooking applications and cooktops using the same. Background technique [0002] Although in the following description a gas burner of the above-mentioned type will be explained and described alone, it should be readily understood that, although not shown, the invention also extends to cover a gas burner provided with and using such a burner. Cooktop or cooktop. [0003] Gas burners covered by this invention are well known in the art, where gas burners need to meet and comply with a number of well-defined standard requirements as well as operational and safety requirements; moreover, gas burners need to ensure the ability to continuously improve performance in terms of overall efficiency . [0004] In particular, the term "efficiency" as used here must be understood to mean that the heat produced by a gas burner (i.e. the heat actually used to heat...

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Problems solved by technology

[0034] As a result, this solution again does not meet the requirements of a gas burner capable of ensuring sufficient efficiency

[0035] Finally, known from the disclosure of published patent US 5,186,158 is a gas burner with two flame rings fed from a single gas expansion chamber through a single venturi; however, even in this In some cases, one of the two flame rings (i.e. the upper flame ring) is only used to generate the pilot flame, so that the burner is in fact very similar to the burner example described in the above-mentioned open patent, it Naturally repeats the limitations and shortcomings of it

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