High-efficiency furnace
OwnerFrank W. Tsai, Paul A. Bockinventors
Life of this patent
Estimating the term…
Abstract
A furnace comprising a lower radiant section and an upper convection section, the lower section having associated fuel burners; generally vertically extending first tubular structure suspended in the first section; second tubular structure extending generally horizontally relative to the first section and suspending the first tubular structure; and grid structure extending generally horizontally and supporting the second tubular structure; whereby hot combustion gases produced by the burners flow upwardly in the first section and past the first and second tubular structure and the grid structure to the upper convection section; and the second tubular structures and/or the grid structure are cooled by circulation of fluids therein.
Claims19
In a furnace, the combination comprising
- a) a lower radiant section and an upper convection section, said lower section having associated fuel burners,
- b) generally vertically extending first tubular means in said first section,
- c) second tubular means extending generally horizontally relative to said first section and suspending said first tubular means,
- d) and grid structure extending generally horizontally and supporting said second tubular means,
- e) whereby hot combustion gases produced by said burners flow upwardly in said first section and past said first and second tubular means and said grid structure to said upper convection section,
- f) said second tubular means directly supporting said first tubular means.
In a furnace, the combination comprising
- a) a lower radiant section and an upper convection section, said lower section having associated fuel burners,
- b) generally vertically extending first tubular means in said first section,
- c) second tubular means extending generally horizontally relative to said first section and suspending said first tubular means,
- d) and grid structure extending generally horizontally and supporting said second tubular means,
- e) whereby hot combustion gases produced by said burners flow upwardly in said first section and past said first and second tubular means and said grid structure to said upper convection section,
- f) and wherein said grid structure comprises third tubular means.
In a furnace, the combination comprising
- a) a lower radiant section and an upper convection section, said lower section having associated fuel burners,
- b) generally vertically extending first tubular means in said first section,
- c) second tubular means extending generally horizontally relative to said first section and suspending said first tubular means,
- d) and grid structure extending generally horizontally and supporting said second tubular means,
- e) whereby hot combustion gases produced by said burners flow upwardly in said first section and past said first and second tubular means and said grid structure to said upper convection section,
- f) and wherein said first and second tubular means are in fluid-passing communication.
Dependencies are inferred from the claim text.