US2015132703A1PendingUtilityA1

Double venturi burner

Assignee: LENNOX IND INCPriority: Nov 14, 2013Filed: Nov 14, 2013Published: May 14, 2015
Est. expiryNov 14, 2033(~7.3 yrs left)· nominal 20-yr term from priority
F23C 5/08F23D 14/08F23D 23/00F23D 14/62F23D 2900/14063F23D 14/04
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Claims

Abstract

In various implementations, a burner may include two venturi inlets coupled to one or more burner heads. The venturi inlets may be opposingly disposed. During use, fuel may be provided to the burner via the two venturi inlets and at least partially combusted proximate the burner heads.

Claims

exact text as granted — not AI-modified
1 . A burner comprising:
 a body comprising:
 a first arm; and 
 a second arm; 
   a plurality of burner heads coupled to the body; and   two venturi inlets coupled to the body, wherein the two venturi inlets comprise:
 a first venturi inlet coupled to the first arm; and 
 a second venturi inlet coupled to the second arm, wherein the first venturi inlet and the second venturi inlet are opposingly disposed. 
   
     
     
         2 . The burner of  claim 1  wherein:
 the first arm is disposed proximate a first end of the body; and 
 the second arm is disposed proximate a second end of the body. 
 
     
     
         3 . The burner of  claim 1  wherein the body comprises:
 a first mixing length comprising a distance between a first end of the first arm and a second end of the first arm; and 
 a second mixing length comprising a distance between a first end of the second arm and a second end of the second arm. 
 
     
     
         4 . The burner of  claim 1  wherein:
 the first venturi inlet is coupled proximate a first end of the first arm; and 
 the second venturi inlet is coupled proximate a second end of the second arm. 
 
     
     
         5 . The burner of  claim 1 , wherein the plurality of burner heads comprises:
 a first burner head comprising a first height; and   a second burner head comprising a second height, wherein the second height is greater than the first height.   
     
     
         6 . The burner of  claim 1  wherein the plurality of burner heads comprises at least two burner heads comprising approximately similar heights. 
     
     
         7 . The burner of  claim 1  wherein the two venturi inlets are adapted such that a fuel stream from a fuel inlet may be provided to the two venturi inlets; and
 wherein the velocity of the fuel stream generates a primary air stream from the air proximate the two venturi inlets, and wherein the primary air stream is provided to the two venturi inlets. 
 
     
     
         8 . An assembly comprising:
 a burner comprising:
 two venturi inlets adapted to receive a fuel stream and a primary air stream; 
 a body; and 
 one or more burner heads. 
   
     
     
         9 . The assembly of  claim 8  further comprising a fuel inlet adapted to provide the fuel stream to the two venturi inlets of the burner. 
     
     
         10 . The assembly of  claim 8  further comprising a fuel inlet, wherein the fuel inlet comprises at least one outlet proximate each venturi inlet of the burner, and wherein each outlet of the fuel inlet is adapted to provide at least a portion of the fuel stream to the venturi inlet of the burner proximate each outlet. 
     
     
         11 . The assembly of  claim 8  further comprising a fuel inlet, wherein the fuel inlet comprises at least one outlet proximate each venturi inlet of the burner, and wherein each outlet of the fuel inlet is adapted to provide at least a portion of the fuel stream to a proximate venturi inlet, and wherein each outlet of the fuel inlet comprises an outlet cross-sectional area that is less than an inlet cross-sectional area of the proximate venturi inlet. 
     
     
         12 . The assembly of  claim 8  wherein the burner comprises more than one burner head, and wherein at least two of the burner heads comprise similar heights. 
     
     
         13 . The assembly of  claim 8  wherein the burner comprises more than one burner head, and wherein at least two of the burner heads comprise at least two different heights. 
     
     
         14 . A method of generating heat comprising:
 allowing at least a portion of a fuel stream to flow from at least one outlet of a fuel inlet to two venturi inlets of a burner, wherein the two venturi inlets are opposingly disposed;   allowing a primary air stream to flow at least partially into the two venturi inlets of the burner;   allowing at least a portion of the primary air stream and at least a portion of the fuel stream to mix in a body of the burner;   allowing a mixed stream to flow to the burner heads of the burner, wherein the mixed stream comprises at least a portion of the primary air stream and at least a portion of the fuel stream; and   allowing combustion of the mixed stream proximate the burner heads of the burner.   
     
     
         15 . The method of  claim 14  further comprising allowing a secondary air stream from the air proximate the burner heads to mix with the mixed stream proximate the burner heads. 
     
     
         16 . The method of  claim 15  wherein a flow rate of the primary air stream is greater than a flow rate of the secondary air stream. 
     
     
         17 . The method of  claim 14  wherein the velocity of the fuel stream from at least one of the outlets of the fuel inlet increases the velocity of the primary air stream into the two venturi inlets. 
     
     
         18 . The method of  claim 14  wherein allowing at least a portion of the primary air stream and at least a portion of the fuel stream to mix comprises allowing at least a portion of the primary air stream and at least a portion of the fuel stream to mix along a mixing length of a body of the burner. 
     
     
         19 . The method of  claim 14  wherein allowing combustion of the mixed stream comprises generating a flame proximate each burner head of a burner. 
     
     
         20 . The method of  claim 14  wherein allowing combustion of the mixed stream comprises allowing at least partial combustion of fuel of the fuel stream.

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