Swirl combustion air fuel torch

Abstract

A torch is provided having a tube having an inside diameter, a body and an orifice tip having a bore, where the diameter of the bore of the orifice tip and the inside diameter of the tube have a particular ratio based upon the type of fuel used for the operation.

1 - 20 . (canceled) 
     
     
         21 . A torch, comprising:
 a torch body having;
 an upstream cavity, 
 a mixture cavity, and 
 a tube connection portion downstream of said mixture cavity, where said mixture cavity has at least one bore through a sidewall of said mixture cavity to permit a flow of air into said mixture cavity, and said tube connection portion has a bore to receive a flow from said mixture cavity and direct said flow to an exit of said tube connection portion; 
   a tip orifice structure inserted into said upstream cavity, said tip orifice structure having a bore through a center thereof, said bore having a first diameter and where said bore directs a fuel to said mixture cavity; and   a tube coupled to said tube connection portion which receives said flow from said tube connection portion, and has an inner diameter, where said tube delivers said flow to a flame at an exit of said tube;   wherein the ratio of said first diameter to said inner diameter of said tube is in the range of 5 to 7%,   wherein said fuel is acetylene, and   wherein said bore in said tube connection portion has an expansion cavity in a downstream portion of said bore in said tube connection portion.   
     
     
         22 . The torch of  claim 21 , wherein said ratio is in the range of 5.4 to 6.6%. 
     
     
         23 . The torch of  claim 21 , wherein said expansion cavity comprises an angled surface having an angle in the range of 3 to 30 degrees. 
     
     
         24 . The torch of  claim 21 , further comprising a swirl insert which is positioned in said tube proximate to said flame. 
     
     
         25 . The torch of  claim 21 , further comprising:
 a channel disposed downstream of said upstream cavity;   wherein said mixture cavity separates said channel into a first channel and a second channel,   wherein said bore of said tube connection portion receives a flow from said second channel and directs said flow from said second channel to said exit of said tube connection portion,   wherein said bore directs a fuel to said mixture cavity via said first channel, and   wherein a diameter of said second channel is greater than a diameter of said first channel.   
     
     
         26 . The torch of  claim 25 , wherein said diameter of said first channel is larger than said first diameter. 
     
     
         27 . The torch of  claim 21 , wherein said first diameter is in the range of 0.01 to 0.04 inches and said inside diameter of said tube is in the range of 0.2 to 0.7 inches. 
     
     
         28 . The torch of  claim 21 , wherein the number of said at least one bore is in the range of 3 to 5. 
     
     
         29 . The torch of  claim 21 , wherein said torch can provide a flow rate of 2 to 30 SCFH at an acetylene fuel pressure of 14 PSI. 
     
     
         30 . A torch, comprising:
 a torch body having;
 an upstream cavity, 
 a mixture cavity, and 
 a tube connection portion downstream of said mixture cavity, where said mixture cavity has at least one bore through a sidewall of said mixture cavity to permit a flow of air into said mixture cavity, and said tube connection portion has a bore to receive a flow from said mixture cavity and direct said flow to an exit of said tube connection portion; 
   a tip orifice structure inserted into said upstream cavity, said tip orifice structure having a bore through a center thereof, said bore having a first diameter and where said bore directs a fuel to said mixture cavity; and   a tube coupled to said tube connection portion which receives said flow from said tube connection portion, and has an inner diameter, where said tube delivers said flow to a flame at an exit of said tube;   wherein the ratio of said first diameter to said inner diameter of said tube is in the range of 5 to 7%, and   wherein said fuel is acetylene.   
     
     
         31 . A torch, comprising:
 a torch body having;
 an upstream cavity, 
 a mixture cavity, and 
 a tube connection portion downstream of said mixture cavity, where said mixture cavity has at least one bore through a sidewall of said mixture cavity to permit a flow of air into said mixture cavity during, and said tube connection portion has a bore to receive a flow from said mixture cavity and direct said flow to an exit of said tube connection portion; 
   a tip orifice structure inserted into said upstream cavity, said tip orifice structure having a bore through a center thereof, said bore having a first diameter and where said bore directs a fuel to said mixture cavity; and   a tube coupled to said tube connection portion which receives said flow from said tube connection portion, and has an inner diameter, where said tube delivers said flow to a flame at an exit of said tube;   wherein the ratio of said first diameter to said inner diameter of said tube is in the range of 2 to 3%,   wherein said fuel is either propane or propylene, and   wherein said bore in said tube connection portion has an expansion cavity in a downstream portion of said bore in said tube connection portion.   
     
     
         32 . The torch of  claim 31 , wherein said ratio is in the range of 2.5 to 3.0%. 
     
     
         33 . The torch of  claim 31 , wherein said expansion cavity comprises an angled surface having an angle in the range of 3 to 30 degrees. 
     
     
         34 . The torch of  claim 31 , further comprising a swirl insert which is positioned in said tube proximate to said flame. 
     
     
         35 . The torch of  claim 31 , further comprising:
 a channel disposed downstream of said upstream cavity;   wherein said mixture cavity separates said channel into a first channel and a second channel,   wherein said bore of said tube connection portion receives a flow from said second channel and directs said flow from said second channel to said exit of said tube connection portion,   wherein said bore directs a fuel to said mixture cavity via said first channel, and   wherein a diameter of said second channel is greater than a diameter of said first channel.   
     
     
         36 . The torch of  claim 35 , wherein said diameter of said first channel is larger than said first diameter. 
     
     
         37 . The torch of  claim 31 , wherein said first diameter is in the range of 0.007 to 0.02 inches and said inside diameter of said tube is in the range of 0.2 to 0.7 inches. 
     
     
         38 . The torch of  claim 31 , wherein the number of said at least one bore is in the range of 3 to 5. 
     
     
         39 . The torch of  claim 31 , wherein said torch can provide a flow rate of 2 to 12 SCFH at a fuel pressure of 28 PSI. 
     
     
         40 . A torch, comprising:
 a torch body having;
 an upstream cavity, 
 a mixture cavity, and 
 a tube connection portion downstream of said mixture cavity, where said mixture cavity has at least one bore through a sidewall of said mixture cavity to permit a flow of air into said mixture cavity during, and said tube connection portion has a bore to receive a flow from said mixture cavity and direct said flow to an exit of said tube connection portion; 
   a tip orifice structure inserted into said upstream cavity, said tip orifice structure having a bore through a center thereof, said bore having a first diameter and where said bore directs a fuel to said mixture cavity; and   a tube coupled to said tube connection portion which receives said flow from said tube connection portion, and has an inner diameter, where said tube delivers said flow to a flame at an exit of said tube;   wherein the ratio of said first diameter to said inner diameter of said tube is in the range of 2 to 3%, and   wherein said fuel is either propane or propylene.