Modular burner with an optimized supply for a hob

Abstract

Modular burner for a hob of a cooking appliance, characterised in that it comprises a base body ( 20 ) in turn comprising a frame ( 22 ), a burner base ( 21,121 ) mountable centrally onto the frame ( 22 ), at least one lid ( 11,12,111 ) intended to close on the upper part the frame ( 22 ) and the burner base ( 21,121 ) and at least one distribution chamber ( 60,160,260 ) fixed beneath one side ( 22 ′) of the frame ( 22 ), said distribution chamber being provided with at least one nozzle ( 70 ) for supplying gas and connected with at least one Venturi pipe ( 71,72,73 ) and with primary air suction inlets ( 75 ) in such a manner to receive the gas supply and distribute it to the modular burner.

1 . Modular burner for a hob of a cooking appliance, characterised in that it comprises a base body ( 20 ) in turn comprising a frame ( 22 ), a burner base ( 21 , 121 ) mountable centrally onto the frame ( 22 ), at least one lid ( 11 , 12 , 111 ) intended to close on the upper part the frame ( 22 ) and the burner base ( 21 , 121 ) and at least one distribution chamber ( 60 , 160 , 260 ) fixed beneath one side ( 22 ′) of the frame ( 22 ), said distribution chamber being provided with at least one nozzle ( 70 ) for supplying gas and connected with at least one Venturi pipe ( 71 , 72 , 73 ) and with primary air suction inlets ( 75 ) in such a manner to receive a gas supply and distribute it to the modular burner. 
   
   
       2 . Modular burner according to  claim 1 , characterised in that said burner is quadrangular-shaped, preferably squared. 
   
   
       3 . Modular burner according to  claim 1 , characterised in that said frame ( 22 ) comprises four arms, of which one to three are support arms ( 23 ) and at least one is a burner arm ( 24 ), which extend radially towards the centre of the frame. 
   
   
       4 . Modular burner according to  claim 3 , characterised in that said burner has a square frame ( 22 ) with three support arms ( 23 ) projecting from the centre of three sides of the frame and one burner arm ( 24 ) projecting from the centre of the remaining side ( 22 ′) of the quadrangular frame ( 22 ). 
   
   
       5 . Modular burner according to  claim 3 , characterised in that said burner has a square frame ( 22 ) with two support arms ( 23 ) and two burner arms ( 24 ). 
   
   
       6 . Modular burner according to  claim 3 , characterised in that each burner arm ( 24 ) is U-shaped with flaps ( 35 ) and it is provided with a channel ( 29 ′) connected to a longitudinal recess ( 73 ) provided on the side ( 22 ′) of the frame ( 22 ) for supplying gas to the entire burner base ( 21 ), said burner arm ( 24 ) further having flame spreader grooves ( 30 ) provided along the edge of the flaps ( 35 ) of the U-shape. 
   
   
       7 . Modular burner according to  claim 6 , characterised in that each burner arm ( 24 ) has a lower bracket ( 38 ) adapted to be connected to a corresponding lower abutment ( 37 ) extending from the burner base ( 21 , 121 ). 
   
   
       8 . Modular burner according to  claim 7 , characterised in that said burner base ( 21 ) is provided for equipped with radial channels ( 27 ) configured in a manner such to correspond to the arms ( 23 , 24 ) in such a manner to be supported by the latter and allow the circulation of the gas supplied by said at least one channel ( 29 ′). 
   
   
       9 . Modular burner according to  claim 8 , characterised in that said recess ( 73 ), closed on the upper part by the lid ( 11 ), is in turn connected with a distribution chamber ( 60 , 160 , 260 ) for supplying and distributing gas to the entire burner base ( 21 ), through at least one opening ( 71 ) provided with a throttle ( 72 ) passing through the bottom of the recess itself and ending up in the recess in such a manner to cooperate to provide a Venturi pipe. 
   
   
       10 . Modular burner according to  claim 9 , characterised in that fixed beneath the frame ( 22 ) is a holder ( 78 ) for collecting the drippings provided with a perimeter fixing edge ( 78 ′) corresponding to the shape of the frame ( 22 ) and having an extended opening ( 79 ) along the side ( 22 ′) of the frame from which the burner arm ( 24 ) extends. 
   
   
       11 . Modular burner according to  claim 10 , characterised in that said distribution chamber ( 60 , 160 , 260 ) is oblong-shaped in such a manner to substantially extend along the entire side ( 22 ′) of the frame ( 22 ) from which the burner arm ( 24 ) extends centrally. 
   
   
       12 . Modular burner according to  claim 11 , characterised in that said distribution chamber ( 60 , 160 , 260 ) comprises a tray ( 64 ) contoured by a perimeter edge ( 65 ) through which it is fixed beneath the frame ( 22 ) with the perimeter edge ( 78 ′) of the holder ( 78 ) interposed at the opening ( 79 ) of such perimeter edge ( 78 ′) said distribution chamber ( 60 , 160 , 260 ) is supplied through a main gas pipe ( 61 ) ending in at least one coupling ( 62 ) which is inserted into the tray ( 64 ). 
   
   
       13 . Modular burner according to  claim 12 , characterised in that the distribution chamber ( 60 , 160 , 260 ) is supplied in at least one supply position, provided through an inlet pipe ( 67 ) connected to a corresponding fitting ( 62 ) connected to the main gas pipe ( 61 ) each inlet pipe ( 67 ) being provided inside a pipe ( 63 ) provided with reinforcement ribs ( 69 ) connected to the external of the distribution chamber ( 60 , 160 , 260 ) beneath the tray ( 64 ) and fixed to the perimeter edge ( 65 ) of the latter in proximity to the internal end, each inlet pipe is connected perpendicularly to a channel ( 68 ) which passes through the bottom of the tray ( 64 ) and it is preset to accommodate a nozzle ( 70 ) facing the bottom of the frame ( 22 ) arranged over the tray ( 64 ) directly beneath the opening ( 71 ). 
   
   
       14 . Modular burner according to  claim 13 , characterised in that the side ( 22 ′) of the frame is provided on the lower side, along the entire length of the two sides, with primary air inlet fittings ( 75 ) to allow its suctioning through the depression caused by the gas emitted by the nozzle which passes through the Venturi pipe provided at the opening ( 71 ) with the related throttle ( 72 ) which ends up in the recess ( 73 ). 
   
   
       15 . Modular burner according to  claim 1 , characterised in that said distribution chamber is alternatively provided with one, two or three nozzles ( 70 ) each facing a corresponding Venturi pipe ( 71 , 72 , 73 ). 
   
   
       16 . Modular burner according to  claim 9 , characterised in that said burner comprises a first distribution chamber ( 260 ) provided with two nozzles ( 70 ) and a second distribution chamber ( 60 ) provided with three nozzles ( 70 ) and in which the frame ( 22 ) is consequently provided with two sides ( 22 ′) departing from which are two burner arms ( 24 ) and consequently the perimeter edge ( 78 ′) of the holder ( 78 ) is correspondingly provided with two openings ( 79 ). 
   
   
       17 . Modular burner according to  claim 1 , characterised in that said burner is of the double burner type ( 100 ) with a low flame and a high flame, comprising the base body ( 20 ) comprising the frame ( 22 ) intended to surround a double crown burner, provided with a burner base ( 121 ) with an external crown ( 122 ) and an internal crown ( 123 ) connected, correspondingly said frame and said burner base are closed on the upper part respectively by means of the lid ( 11 ) and a lid ( 111 ) of the double crown burner in turn provided with an external crown ( 112 ) and an internal crown ( 113 ). 
   
   
       18 . Modular burner according to  claim 17 , characterised in that the two burner arms ( 24 ) of the frame ( 22 ) supply a first channel ( 127 ′) and a second channel ( 127 ″) of the burner base, the first channel ( 127 ′) being connected to the distribution chamber ( 60 ) with three nozzles ( 70 ), feeds the external crown ( 122 ), and the second channel ( 127 ″) connected to the distribution chamber ( 260 ) with nozzles, feeds the internal crown ( 123 ) between said two crowns ( 122 ,  123 ) being provided flow separator elements ( 128 ) to avoid preferential paths of the flows.