Flame effect system

Abstract

A burner assembly includes a conduit having a plurality of ports formed along a length of the conduit. The conduit is configured to direct a flow of gas out of the conduit via the plurality of ports. The burner assembly further includes a shroud extending along a length of the conduit and covering at least a portion of the conduit. The shroud is perimetrically offset from the conduit to form an air passage between the shroud and the conduit along an outer perimeter of the conduit. The conduit and the shroud are configured to facilitate airflow along the air passage in response to the flow of gas out of the conduit.

1 . A burner assembly, comprising: 
 a conduit comprising a plurality of ports formed along a length of the conduit, wherein the conduit is configured to direct a flow of gas out of the conduit via the plurality of ports; and   a shroud extending along a length of the conduit and covering at least a portion of the conduit, wherein the shroud is offset from a perimeter of the conduit to form an air passage between the shroud and the conduit along an exterior surface of the conduit, wherein the conduit and the shroud are configured to direct a flow of air along the air passage in response to the flow of gas out of the conduit.   
     
     
         2 . The burner assembly of  claim 1 , wherein the shroud extends over the plurality of ports, and the shroud is configured to direct the flow of the gas, and the flow of air, in the air passage toward a flame outlet. 
     
     
         3 . The burner assembly of  claim 1 , wherein the flow of gas is configured to mix with the flow of air in the air passage. 
     
     
         4 . The burner assembly of  claim 1 , wherein the shroud comprises an undulating surface. 
     
     
         5 . The burner assembly of  claim 1 , wherein the conduit comprises a pipe with a polygonal cross-section, and the plurality of ports is formed in a corner of the pipe. 
     
     
         6 . The burner assembly of  claim 5 , wherein the shroud extends along a first face and a second face of the pipe. 
     
     
         7 . The burner assembly of  claim 6 , comprising cladding material coupled to a third face of the pipe, wherein the cladding material and the shroud are configured to direct the flow of the gas and the flow of air to produce a flame that swirls around the shroud.  
     
     
         8 . The burner assembly of  claim 1 , wherein the flow of gas is configured to produce suction pressure forcing air from an external environment of the conduit through the air passage as the flow of air. 
     
     
         9 . The burner assembly of  claim 1 , wherein the air passage comprises an air inlet at a first end of the shroud and a flame outlet at a second end of the shroud.  
     
     
         10 . The burner assembly of  claim 1 , wherein the shroud is configured to facilitate a Venturi effect such that the flow of gas imparts kinetic energy to air in the air passage to generate the flow of air. 
     
     
         11 . The burner assembly of  claim 1 , comprising one or more gas valves configured to control the flow of gas in the conduit. 
     
     
         12 . A gas flow system, comprising: 
 a plurality of conduits configured to receive and direct a flow of gas, wherein each conduit of the plurality of conduits comprises a plurality of gas ports, and each conduit is configured to direct a respective flow of gas out of the conduit via the plurality of gas ports; and   a plurality of shrouds, each coupled to a respective conduit of the plurality of conduits, wherein each shroud of the plurality of shrouds comprises a surface extending partially around a perimeter of the conduit to form an air passage between an exterior surface of the conduit and the shroud, wherein each shroud is configured to direct a respective flow of air along the air passage from an air inlet at a first end of the shroud to a flame outlet at a second end of the shroud.   
     
     
         13 . The gas flow system of  claim 12 , wherein each shroud of the plurality of shrouds and the respective conduit for the shroud are configured to facilitate generation of the respective flow of air along the air passage in response to the respective flow of gas out of the conduit via the plurality of gas ports.  
     
     
         14 . The gas flow system of  claim 13 , wherein gas flow system is configured to produce a pressure difference between the flame outlet and the air inlet based on the flow of gas.  
     
     
         15 . The gas flow system of  claim 12 , wherein the plurality of conduits is coupled to a base structure, and each conduit of the plurality of conduits extends in a radial direction relative to an axis of rotation about the base structure. 
     
     
         16 . The gas flow system of  claim 15 , comprising a motor configured to rotate the plurality of conduits about the axis of rotation. 
     
     
         17 . The gas flow system of  claim 16 , comprising: 
 one or more gas valves configured to control the flow of gas; and   one or more igniters configured to ignite the gas.    
     
     
         18 . The gas flow system of  claim 17 , comprising a controller configured to control the one or more gas valves, the motor, or a combination thereof. 
     
     
         19 . A gas flow system, comprising: 
 a base structure; and   a plurality of burner assemblies rotatably coupled to the base structure, wherein each burner assembly of the plurality of burner assemblies comprises: 
 a conduit comprising a plurality of gas ports and configured to discharge a flow of gas from the conduit via the plurality of gas ports; and 
 cladding material extending along a length of the conduit, wherein the cladding material is configured to at least partially enshroud the conduit; and 
 an air passage between the conduit and the cladding material, wherein the air passage is configured such that kinetic energy of the flow of gas discharged from the conduit via the plurality of gas ports causes a flow of air to enter the air passage.  
   
     
     
         20 . The gas flow system of  claim 19 , wherein the conduit of each burner assembly has a polygonal cross section, and the plurality of gas ports is formed along an edge of the conduit.