Gas burner equipped with a cooling system

Abstract

A gas burner ( 10 ) equipped with a cooling system, featuring whatever configuration and size, includes a flange ( 12 ) with a central hole ( 14 ), an intermediate body or underhead ( 16 ) coupled with the mentioned flange, a distribution plate ( 18 ), if any, with slots ( 28 ) and a head ( 20 ) equipped with a multiplicity of clearance holes ( 22 ); the underhead ( 16 ) includes a base ( 48 ) forming a separation plate between the upper front that faces the head ( 20 ), on which a plurality of ribs ( 26 ) developing from the base itself ( 48 ) and coming into contact with the distribution plate ( 18 ) or the head ( 20 ) is found, and the opposed lower front equipped with an articulated canalization where the cooling fluid circulates.

1 . A gas burner ( 10 ), for example one of premixed type, equipped with a cooling system, of whatever shape and size, comprising a flange ( 12 ) with a central hole ( 14 ), an intermediate body or underhead ( 16 ) coupled with the mentioned flange, a distribution plate ( 18 ), if any, with slots ( 28 ) and a head ( 20 ) equipped with a plurality of clearance holes ( 22 ), characterized in that the underhead ( 16 ) includes a base ( 48 ) forming a separation plate between the upper front turned towards the head ( 20 ), where a plurality of ribs ( 26 ) are made which stem from the base ( 48 ) itself and come into contact with the distribution plate ( 18 ) or with the head ( 20 ), and the opposed lower front equipped with an articulated canalisation for the circulation of coolant.  
   
   
       2 . A gas burner according to  claim 1 , wherein the ribs ( 26 ) are arranged in a radial pattern on the upper front of the underhead ( 16 ) and depart from a circumferential rib ( 34 ), the ribs ( 26 ) having holes ( 24 ) for bonding, by means of screws or equivalent means, of the distribution plate ( 18 ) and/or the head ( 20 ) to the mentioned underhead ( 16 ).  
   
   
       3 . A burner according to  claim 1 , wherein the ratio between extent “As” of the ribs ( 26 ) surface and extent “Ap” of the head ( 20 ) or the distribution plate ( 18 ) surface exposed to high temperatures for lowering temperature through the passage of the coolant in the canalisation made on the lower front of the underhead ( 16 ) ranges between 5% and 40% for a temperature reduction ranging from 1000° C. to 500° C. approximately.  
   
   
       4 . A burner according to  claim 3 , wherein the mentioned As/Ap ratio ranges between 100% and 30% as a function of the thermal conductivity of the materials used to manufacture the burner parts.  
   
   
       5 . A burner according to  claim 1 , wherein the articulated canalisation formed on the lower front of the underhead ( 16 ) includes a plurality of curbs ( 40 ) in the shape of an arc of a circle and externally delimited by a circumferential barrier ( 42 ), and a central collar ( 52 ) that borders a central hole ( 38 ) making up the extension of hole ( 14 ) of flange ( 12 ), between the latter and the collar ( 52 ) being arranged a seal ( 54 ).  
   
   
       6 . A burner according to  claim 1 , wherein the underhead ( 16 ) is equipped with an inlet duct ( 58 ) and an outlet duct ( 60 ) for the coolant fed into the articulated canalisation of the underhead ( 16 ).  
   
   
       7 . A burner according to  claim 1 , wherein the articulated canalisation of the underhead ( 16 ) includes a plurality of channels ( 50 ) formed by the curbs ( 40 ), the barrier ( 42 ) and the collar ( 52 ) and/or a plurality of pegs or dents.  
   
   
       8 . A burner, according to  claim 5 , wherein at least a seal ( 56 ) located between the circumferential barrier ( 42 ) and the flange ( 12 ) is comprised.  
   
   
       9 . A burner according to  claim 1 , wherein the s flange ( 12 ) and the underhead ( 16 ) are equipped with peripheral tailpieces ( 30 ) with holes ( 32 ) for mutual connection with bolts or equivalent means.  
   
   
       10 . A burner, according to  claim 5 , wherein the circumferential barrier ( 42 ) comprises integral tailpieces ( 44 ) with holes ( 46 ).  
   
   
       11 . A burner according to  claim 1 , wherein the underhead ( 16 ) is bordered by a tube-bundle heat exchanger ( 70 ) comprising a peripheral flange ( 74 ) tied to the underhead by means of screws or equivalent means.  
   
   
       12 . A burner, according to  claim 11 , wherein a heat-conductive seal ( 78 ) is located between the peripheral flange ( 74 ) of the heat exchanger ( 70 ) and the underhead ( 16 ).