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US 5,496,171 AGranted
Surface combustion burner
AssigneeTokyo Gas Co., Ltd.
InventorsHidenari Ozawa, Kazutaka Kato, Keiichi Ohgi, Masahiro Yahagi
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AssigneeTokyo Gas Co., Ltd.
InventorsHidenari Ozawa, Kazutaka Kato, Keiichi Ohgi, Masahiro Yahagi
Estimating the term…
The present invention intends to provide a surface combustion burner which can permit high intensity combustion at the burner surface by preventing the occurrence of a lift phenomenon of flames due to whirling of air from the peripheral portion of the surface combustion burner. To this end, a mixing chamber positioned rearwardly of a porous member having its front surface constituting a combustion surface is divided by a partition wall into a first mixing chamber positioned at a central portion and a second mixing chamber positioned to surround the first mixing chamber so that fuel gas mixtures at different air ratios are supplied to the first and second mixing chambers, respectively, and/or the porous member having its front surface serving as the combustion surface has a resistance against the flow velocity of fuel gas mixture which is higher at a peripheral edge nearby region than at the remaining region.
A surface combustion burner comprising a porous member having its front surface constituting a combustion surface, a casing extending rearward from an outer peripheral rear surface of said porous member, a mixing chamber defined by said porous member and said casing, opening means for suppling fuel air mixture to said mixing chamber, a partition wall dividing said mixing chamber into a first mixing chamber positioned at a central portion of a rear surface of said porous member and said mixing chamber and a second mixing chamber surrounding said first mixing chamber, and openings for supplying fuel air mixture to said first and second mixing chambers, respectively, said porous member having a percentage of voids which is higher at a portion confronting said first mixing chamber than at a portion confronting said second mixing chamber.
A surface combustion burner comprising a porous member having its front surface constituting a combustion surface, a casing extending rearward from an outer peripheral rear surface of said porous member, a mixing chamber defined by said porous member and said casing, opening means for supplying fuel air mixture to said mixing chamber, a partition wall dividing said mixing chamber into a first mixing chamber positioned at a central portion of a rear surface of said porous member and said mixing chamber and a second mixing chamber surrounding said first mixing chamber, and openings for supplying fuel air mixture to said first and second mixing chambers, respectively, said porous member being formed with a great number of through holes at its portion confronting said first mixing chamber.
Dependencies are inferred from the claim text.