F - Mech Eng,Light,Heat,Weapons – 23 – L
Patent
F - Mech Eng,Light,Heat,Weapons
23
L
158/18
F23L 15/04 (2006.01) F27D 99/00 (2010.01) C03B 5/237 (2006.01) F23M 5/02 (2006.01) F27D 1/00 (2006.01)
Patent
CA 1207651
ABSTRACT OF THE DISCLOSURE This invention provides an improvement in a transverse-burner recuperative furnace for melting glass, which comprises a hearth, a vault, tank walls, two piedroits (or casing walls) extending upwardly from the tank walls to the vault and supporting same, each of the piedroits comprising, above the molten glass level, a row of burner blocks each con- nected to an air inlet and to at least one fuel injection pipe, and a recuperator for preheating the air fed to the burner blocks. The improvement comprises the burner blocks having inner apertures each of generally elongate rectangular shape, each aperture presenting a first block portion of constant cross-section extending from the rear face of the burner block, and each aperture presenting a second block portion progres- sively flaring upwards and downwards to the front face of the burner block, the second portion having an angle of flare of not more than 15 degrees, and the cumulated total length of the apertures representing at least 0.65 times the length of the row of burner blocks. A furnace incorporating the present invention provides an increase in the flame cover, particularly at the root, a reduction in the air velocity at the inlet to the laboratory, and in addition better heat insulation is pos- sible.
425112
Blanchet Pierre
Recasens Joseph
Mcfadden Fincham
Societe Europeenne Des Produits Refractaires
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