Burner with tangential gas inlet

Abstract

A gas burner for producing an annular array of flames includes a circular gas distribution channel distributing gas from an inlet to a circular array of burning ports. The burner includes a gas injector delivering gas to the gas distribution channel tangentially. This reduces the overall footprint of the burner to facilitate its incorporation in small appliances.

1 . A gas burner having a substantially circular gas distribution channel distributing gas from an inlet that includes a gas injector delivering gas to the gas distribution channel tangentially.  
     
     
         2 . The gas burner of  claim 1 , wherein the gas distribution channel includes a substantially circular array of burning ports.  
     
     
         3 . The gas burner of  claim 1 , wherein the inlet includes a mixing tube through which gas from the injector passes tangentially to the distribution channel.  
     
     
         4 . The gas burner of  claim 3  further including a venturi situated in the mixing tube and arranged to accelerate gas injected by the injector into the distribution channel.  
     
     
         5 . The gas burner of  claim 2 , wherein the burning ports are circular apertures.  
     
     
         6 . The gas burner of  claim 2 , wherein the burning ports are radially extending slots.  
     
     
         7 . The gas burner of  claim 1 , wherein the distribution channel is annular so as to allow secondary combustion air to pass through a centre thereof.  
     
     
         8 . A heating appliance having the gas burner of  claim 1  mounted therein so as to direct heat to a heat exchanger.  
     
     
         9 . The heating appliance of  claim 8  further including a gas supply line extending substantially co-linearly with and from the gas inlet directly to a gas-flow control valve.