Cooking hob from tempered glass or other thermodegradable materials

Abstract

A cooking hob has a supporting surface made of a material the physical characteristics or the structure of which are degradable in the proximity of heat sources, such as, for example, tempered glass, and is provided with at least one hole, within which is housed at least partially an atmospheric gas burner, of the type comprising a burner base and a burner head with at least one flame crown. The burner further comprises a circumferential ring set between the flame crown and the supporting surface made of degradable material.

1 . Use of a gas burner, of the type comprising a burner base and a burner head provided with at least one flame crown, in a cooking hob having a supporting surface made of a material the physical characteristics or the structure of which are degradable in the proximity of heat sources, said burner being at least partially housed in a hole made in said cooking hob and comprising a circumferential ring set between said at least one flame crown and said supporting surface.  
   
   
       2 . Use of a gas burner according to  claim 1 , in which said circumferential ring is set at a distance from said supporting surface and the primary air is taken in above the supporting surface and underneath said circumferential ring.  
   
   
       3 . Use of a gas burner according to  claim 1 , in which said circumferential ring has a plan diameter equal to or greater than the diameter of said flame crown.  
   
   
       4 . Use of a gas burner according to  claim 1 , characterized in that said circumferential ring has a plan diameter greater than or equal to the diameter of said hole within which the burner is housed.  
   
   
       5 . Use of a gas burner according to  claim 1 , in which said circumferential ring substantially has the shape of a truncated cone and/or a convex shape, the major base of which faces said supporting surface.  
   
   
       6 . Use of a gas burner according to  claim 1 , in which said burner comprises at least one horizontal Venturi tube for mixing of primary air and combustible gas.  
   
   
       7 . Use of a gas burner according to  claim 1 , in which said burner comprises two or more flame crowns.  
   
   
       8 . Use of a gas burner according to  claim 1 , in which said supporting surface of the cooking hob is made of tempered glass, or of stainless steel, or of enamelled steel.  
   
   
       9 . Use of a gas burner according to  claim 1 , in which said circumferential ring is fixed to the base or to the head of the burner.  
   
   
       10 . Use of a gas burner according to  claim 1 , in which said burner comprises an intermediate plate for the separation of the fluid flows towards and in the burner, and in which said circumferential ring is fixed in an integral way to said intermediate plate.  
   
   
       11 . Use of a gas burner according to  claim 1 , in which said circumferential ring is made of steel, or aluminium, or aluminium alloys, or brass, or ceramic, or plastic technopolymers with ceramic fillers or with fibre fillers that are resistant to high temperatures.  
   
   
       12 . A cooking hob having a supporting surface which is made of a material the physical characteristics or structure of which are degradable in the proximity of heat sources and is provided with at least one hole within which is housed at least partially a gas burner of the type comprising a burner base and a burner head having at least one flame crown, as well as a circumferential ring set between said at least one flame crown and said supporting surface.  
   
   
       13 . The cooking hob according to  claim 12 , in which said circumferential ring is set at a distance from said supporting surface, and the primary air is taken in above the supporting surface and underneath said circumferential ring.  
   
   
       14 . The cooking hob according to  claim 12 , in which said burner is of the type comprising a burner head having two or more flame crowns.  
   
   
       15 . The cooking hob according to  claim 12 , in which said circumferential ring has a plan diameter equal to or greater than the diameter of said flame crown.  
   
   
       16 . The cooking hob according to  claim 12 , in which said circumferential ring has a plan diameter greater than or equal to the diameter of said hole within which the burner is housed.  
   
   
       17 . The cooking hob according to  claim 12 , in which said circumferential ring has a shape that is substantially a truncated cone and/or a convex shape.  
   
   
       18 . The cooking hob according to  claim 17 , in which the major base of said circumferential ring faces the supporting surface.  
   
   
       19 . The cooking hob according to  claim 12 , in which said circumferential ring is made of steel, or aluminium, or aluminium alloys, or brass, or ceramic, or plastic technopolymers with ceramic fillers or with fibre fillers that are resistant to high temperatures.  
   
   
       20 . The cooking hob according to  claim 12 , in which said supporting surface of the cooking hob is made of tempered glass or of stainless steel or of enamelled steel.