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Title: Gas burner and furnace
Claims: I claim: 1. A burner comprising: housing means defining a substantialy rigid enclosure and including wall means terminating in a common plane to define an open end to said enclosure, the opposite end of said enclosure being closed; an elongated strip of porous refractory material disposed in said enclosure, said strip of refractory material having an elongated generally flat hot face lying generally in said common plane, a cold face disposed on the opposite side of said strip from said hot face, and side faces of said strip disposed therebetween, said strip being wholly spaced from said wall means, said strip having a plurality of fuel flow passages extending therethrough from said cold face to said hot face, said hot and cold faces being spaced apart a distance greater than the width of said hot face; a body of heat insulating material disposed between said side faces of said strip and said wall means, said body of insulating material being relatively light in weight and filling the entirety of the space between said strip and said wall means, one surface of said body of insulating material lying generally in said common plane and the opposite surface of said body being at least in part spaced from said opposite end of said enclosure to define a plenum; and inlet means having a flow passageway for communicating a gaseous fuel to said plenum. 2. A burner as claimed in claim 1, wherein said one surface of said body lies in substantially the same plane as said cold face of said strip. 3. A burner as claimed in claim 2, wherein said last-mentioned plane is generally parallel to said common plane. 4. A burner as claimed in claim 3, wherein said body of insulating material fills the major portion of the space defined by said wall means and said two planes. 5. A burner as claimed in claim 1, wherein said side faces of said strip are disposed in spaced planes which converge toward one another in a direction toward said common plane. 6. A burner as claimed in claim 1, wherein said hot and cold faces are spaced apart at least three and one-half inches. 7. A burner as claimed in claim 1, wherein said strip is of substantially uniform density and porosity throughout its thickness in a direction extending from said cold face to said hot face. 8. A burner as claimed in claim 1, comprising a plurality of said elongated strips of said porous refractory aligned with respect to one another in a longitudinally disposed end-to-end spaced relationship, said non-porous refractory material being disposed between said strip. 9. A burner as claimed in claim 1, wherein the total effective cross-sectional area of the passageways through said porous refractory is greater than the approximate total effective area of said flow passageway for inlet fuel through said inlet means. 10. A burner as claimed in claim 1, wherein said strip of porous refractory is of substantially uniform cross-section throughout its length. 11. A burner as claimed in claim 1, wherein said strip is longer than said distance between said hot and cold faces. 12. A burner as claimed in claim 1, wherein said heat insulating material has a hot surface which is substantially flush with said hot face. 13. A burner as claimed in claim 1, wherein said hot and cold faces are disposed generally parallel to one another. 14. A burner as claimed in claim 1, wherein said strip is formed of a porous refractory material. 15. A burner as claimed in claim 1, wherein said fuel flow passages are cast holes in said strip. 16. A burner as claimed in claim 1, wherein said fuel passages are drilled holes in said strip. 17. A burner as claimed in claim 1, wherein said burner is utilized for supplying heat to a combustion chamber, said strip extending for substantially the full length of one dimension of said combustion chamber, said hot face being of a minimum width sufficient to pass the desired quantity of gaseous fuel. 18. A burner as claimed in claim 9, wherein said area of said passageways in said porous refractory approximately 150 percent of the area of said flow passageway for inlet fuel. Other info: Inventors: Hildebrand, Kornelius Application Number: 530416 Filing Date: 1974-12-06 Publication_date: 1976-05-04 Assignee: Primary Class(es): 431/329 126/92AC, 431/170 Other Classes: US Patent Ref:
Other Refs: Primary Examiner: Camby, John J. Assistant Examiner: Yuen, Henry C. Attorney: Harness, Dickey & Pierce |
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