US2008227044A1PendingUtilityA1

Metal Foam Radiant Burner

48
Individually held — no corporate assignee on recordPriority: Mar 12, 2007Filed: Mar 10, 2008Published: Sep 18, 2008
Est. expiryMar 12, 2027(~0.6 yrs left)· nominal 20-yr term from priority
Inventors:Edward J. CooksonRobert L. Cowan, Ii
F23D 2212/201A47J 37/0713F23D 2203/101F23D 14/16F23D 2203/1055
48
PatentIndex Score
0
Cited by
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References
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Claims

Abstract

An improved radiant burner which is particularly useful at low flow rates. The radiant burner has a reticulated metal foam with a first face and a second face and a density sufficient for combustion fuel to pass there through. The first face is adapted to be the initial contact for the combustion fuel passing through the reticulated metal foam. The second face is adapted to radiate after the combustion fuel has been ignited. The second face has a plurality of grooves

Claims

exact text as granted — not AI-modified
1 . A radiant burner comprising:
 a reticulated metal foam comprising a first face and a second face with a density sufficient for combustion fuel to pass there through;   said first face adapted to contact said combustion fuel for passing through said reticulated metal foam;   said second face adapted to radiate after said combustion fuel has been ignited wherein said second face comprises a plurality of grooves.   
   
   
       2 . The radiant burner of  claim 1  wherein said reticulated metal foam has a density of 2-25% relative to a theoretical density. 
   
   
       3 . The radiant burner of  claim 1  wherein said reticulated metal foam has 2-150 pores per inch. 
   
   
       4 . The radiant burner of  claim 1  wherein said reticulated metal foam comprises a material selected from the group consisting of FeCrAlY alloy, stainless steel and nickel alloy. 
   
   
       5 . The radiant burner of  claim 1  wherein said grooves have an included angle of 10-60°. 
   
   
       6 . The radiant burner of  claim 1  wherein said grooves have a depth of at least 0.125 to no more than 0.5 inches. 
   
   
       7 . The radiant burner of  claim 1  wherein said grooves are separated by at least 0.125 to no more than 2 inches. 
   
   
       8 . The radiant burner of  claim 1  wherein said grooves are linear. 
   
   
       9 . The radiant burner of  claim 1  wherein at least two grooves intersect. 
   
   
       10 . The radiant burner of  claim 1  wherein at least one groove of said grooves is curved. 
   
   
       11 . The radiant burner of  claim 1  further comprising a plenum attached to said reticulated metal foam wherein said plenum comprises said combustion fuel. 
   
   
       12 . The radiant burner of  claim 1  wherein said reticulated metal foam with a porosity of (XXX—POROSITY OF EXAMPLES) and supply pressure of about 3 i.w.c. using air and natural gas in a 10:1 ratio a flame can be obtained with a sufficient combustion to exhibit less than 300 ppm CO. 
   
   
       13 . The radiant burner of  claim 12  wherein said flame can be obtained with a sufficient combustion to exhibit less than 200 ppm CO. 
   
   
       14 . A heating system comprising:
 an apparatus for providing combustible gas;   a mixer capable of mixing said combustible gas with air to form a combustible fuel mixture;   a reticulated metal foam burner comprising a first face and a second face wherein said first face is capable of receiving said combustible fuel mixture and wherein said combustible fuel mixture passes through said reticulated metal foam burner for combustion on a second surface wherein said second surface comprises a plurality of grooves; and
 a plenum chamber adapted to distribute said combustible fuel mixture over said first surface. 
   
   
   
       15 . The heating system of  claim 14  wherein said reticulated metal foam burner has a density of 2-25% relative to a theoretical density. 
   
   
       16 . The heating system of  claim 14  wherein said reticulated metal foam burner has 2-150 pores per inch. 
   
   
       17 . The heating system of  claim 14  wherein said reticulated metal foam burner comprises a material selected from the group consisting of FeCrAlY alloy, stainless steel and nickel alloy. 
   
   
       18 . The heating system of  claim 14  wherein said grooves have an included angle of 10-60°. 
   
   
       19 . The heating system of  claim 14  wherein said grooves have a depth of at least 0.125 to no more than 0.5 inches. 
   
   
       20 . The heating system of  claim 14  wherein said grooves are separated by at least 0.125 to no more than 2 inches. 
   
   
       21 . The heating system of  claim 14  wherein said grooves are linear. 
   
   
       22 . The heating system of  claim 14  wherein at least two grooves intersect. 
   
   
       23 . The heating system of  claim 14  wherein said reticulated metal foam with a porosity of (XXX—POROSITY OF EXAMPLES) and supply pressure of about 3 i.w.c. using air and natural gas in a 10:1 ratio a flame can be obtained with a sufficient combustion to exhibit less than 300 ppm CO. 
   
   
       24 . The heating system of  claim 23  wherein said flame can be obtained with a sufficient combustion to exhibit less than 200 ppm CO.

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