US3899031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor generator
Assignee: General Electric Co
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Filing: 1974-06-17
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Granted: 1975-08-12
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Expires: 1994-06-17
Abstract
Abstract A vapor generator for vaporizing a liquid by burning a combustible mixture which has low pollutant emissions. A porous burner having a cooling liquid tube within it divides the interior of a housing into a combustion chamber and a plenum into which the combustible mixture is blown. The vaporized mixture passes through the wall and burns on its outer surface. In a coiled tube surrounding the porous burner the liquid from the cooling liquid tube is vaporized.
Inventors
- 👤 Rudolf R Laessig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:35
CPC Classifications
F; F22; F22B; F22B27/00; F22B27/04; F22B27/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
135 words
A vapor generator for vaporizing a liquid by burning a combustible mixture while minimizing the production of carbon monoxide, unburned hydrocarbons and nitrogen oxides comprising: a housing having a central inlet for receiving the combustible mixture and an exhaust port in the housing wall; a first coil of tubing for carrying the liquid contained in a porous wall; said porous wall dividing the interior of said housing into a central plenum and a combustion chamber; a second coil of tubing in said combustion chamber spaced from said porous wall wherein said liquid is vaporized; the outlet of said first tube being connected to the inlet of said second tube; means for introducing a combustible mixture into said plenum at a pressure higher than atmospheric; and means for igniting said combustible mixture in said combustion chamber.
Claim 2
Dependent Claim
135 words
A vapor generator for vaporizing a liquid by burning a combustible mixture while minimizing the production of carbon monoxide, unburned hydrocarbons and nitrogen oxides comprising: a housing having a central inlet for receiving the combustible mixture and an exhaust port in the housing wall; a first coil of tubing for carrying the liquid contained in a porous wall; said porous wall dividing the interior of said housing into a central plenum and a combustion chamber; a second coil of tubing in said combustion chamber spaced from said porous wall wherein said liquid is vaporized; the outlet of said first tube being connected to the inlet of said second tube; means for introducing a combustible mixture into said plenum at a pressure higher than atmospheric; and means for igniting said combustible mixture in said combustion chamber.
Claim 3
Dependent Claim
22 words
A vapor generator in accordance with claim 1 wherein: said housing is cylindrical; and said exhaust port is in the cylindrical wall.
Claim 4
Dependent Claim
18 words
A vapor generator in accordance with claim 1 wherein: said porous wall is formed of bonded metal particles.
Claim 5
Dependent Claim
18 words
A vapor generator according to claim 1 wherein: said first and second coils of tubing are concentric helixes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |