Gas heating appliance

Abstract

The present invention relates to a gas burner particularly suited for gas heating applicances for cooking food. In particular the present invention comprises a generally circular moulded body ( 100 ) including gases inlet ( 106 ) and an internal cavity ( 114 ). The internal cavity ( 114 ) is covered by a substantially transparent glass cap ( 108 ), which also bounds on the gas outlets ( 116 ). In this fashion, due to the transparency of the glass cap ( 108 ) at low flame improve controllability and safety are achieved by visual feedback of the flame size.

1 . A gas burner comprising: 
 a body portion including a gas inlet and an open inner cavity in fluid communication with said gas inlet,    a substantially transparent cover means adapted to engage or attach to said body portion and thereby substantially cover said inner cavity and,    a plurality of gas outlets substantially adjacent the boundary formed between said cover means and said body portion and in fluid communication with said inner cavity.    
     
     
         2 . A gas burner as claimed in  claim 1  wherein said cover means is substantially composed of glass.  
     
     
         3 . A gas burner as claimed in  claim 1  wherein said cover means is composed of a glass mixture with substantial resistance to thermal shock.  
     
     
         4 . A gas burner as claimed in  claim 1  wherein said cover means is composed of glass ceramic.  
     
     
         5 . A gas burner as claimed in  claim 1  wherein said cover means is composed of a silica based glass mixture.  
     
     
         6 . A gas burner as claimed in  claim 1  wherein said cover means in composed of a borosilicate glass mixture.  
     
     
         7 . A gas burner as claimed in any one of the preceeding claims wherein said plurality of gas outlets comprises a number of channels formed in what is in use the upper face of said body portion, said channels running from the inner cavity of said body portion to the outer circumference of said body portion.  
     
     
         8 . A gas burner as claimed in any one of  claims 1  to  6  wherein said plurality of gas outlets comprises a number of channels formed in what is in use the lower face of said cover means, said channels running from (when said cover means is in place atop said body portion) the inner cavity of said body portion to the outer circumference of said body portion.  
     
     
         9 . A gas burner as claimed in any one of  claims 1  to  6  wherein said plurality of gas outlets comprise a plurality of holes in said body portion, extending from said inner cavity to the exterior.  
     
     
         10 . A gas burner as claimed in any one of the preceeding claims wherein said cover means includes lettering or designs moulded into or printed onto what is in use the underside of said cover means.  
     
     
         11 . A gas burner as claimed in any one of the preceeding claims wherein said body portion includes a centre portion and said inner cavity comprising an annular cavity around said centre portion, said plurality of gas outlets comprising inner outlets facing inwardly substantially toward the centre of said burner and outer outlets facing substantially outwardly of said burner, and said cover means comprising a substantially transparent annular ring substantially covering said annular cavity.  
     
     
         12 . A gas burner as claimed in any one of the preceeding claims wherein said cover means including a tapered portion on the outer circumference thereof.  
     
     
         13 . A gas burner substantially as herein described with reference to and as illustrated by the accompanying figures.