US3670668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incinerator with extended heat exchange surface
Assignee: Granco Equipment Inc
•
Filing: 1971-01-08
•
Granted: 1972-06-20
•
Expires: 1991-01-08
Abstract
Abstract An incinerator for a drying oven and the like to remove combustible fumes such as solvent vapors from the exhaust from such ovens. The incinerator is formed from a narrow, elongated, heat conducting, metal incinerator conduit having at least one U or reverse bend to increase turbulance within the conduit and to increase heat exchange of hot gases with the exterior of the conduit. The incinerator conduit is formed of a plurality of elongated arcuate sections which are secured together at the edges. Heat conducting fins extend through the conduit between the interior and the exterior thereof at the edges of the arcuate sections to facilitate heat transfer between the interior and exterior of the incinerator conduit. The fume-laden gases to be incinerated are channelled along the exterior surface of the incinerator conduit in contact with the heat exchange fins by a larger preheat conduit surrounding the incinerator conduit. A fan draws the solvent-laden gases through the larger preheat conduit and forces the preheated gases into the incinerator conduit at a higher pressure than that of the preheat conduit.
Inventors
- 👤 William A Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:02
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/06
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
150 words
In an incinerator for oxidizing combustible fumes contained in a mixture of such fumes and air, said incinerator comprising: a narrow elongated burner tube having an inlet end and an outlet end; means in said elongated tube for heating gases passing therethrough to an elevated temperature suitable for oxidizing said combustible fumes in said mixture; means surrounding at least a portion of said elongated burner tube defining a preheat zone for said mixture, said surrounding means including an inlet opening for receiving said mixture and an outlet opening for discharging said mixture; means for passing preheated gases from said outlet opening of said surrounding means into said burner tube; the improvement which comprises: heat exchange means extending from within said burner tube, through said burner tube and into said preheat zone, whereby heat is effectively transferred from said burner tube to said preheat zone to preheat said mixture passing therethrough.
Claim 2
Dependent Claim
150 words
In an incinerator for oxidizing combustible fumes contained in a mixture of such fumes and air, said incinerator comprising: a narrow elongated burner tube having an inlet end and an outlet end; means in said elongated tube for heating gases passing therethrough to an elevated temperature suitable for oxidizing said combustible fumes in said mixture; means surrounding at least a portion of said elongated burner tube defining a preheat zone for said mixture, said surrounding means including an inlet opening for receiving said mixture and an outlet opening for discharging said mixture; means for passing preheated gases from said outlet opening of said surrounding means into said burner tube; the improvement which comprises: heat exchange means extending from within said burner tube, through said burner tube and into said preheat zone, whereby heat is effectively transferred from said burner tube to said preheat zone to preheat said mixture passing therethrough.
Claim 3
Dependent Claim
16 words
An incinerator according to claim 1 wherein said burner tube contains at least one turbulating means.
Claim 4
Dependent Claim
38 words
An incinerator according to claim 1 wherein said burner tube comprises a plurality of elongated panels joined together at the longitudinal edges thereof, and said heat exchange means are positioned between said longitudinal edges of said elongated panels.
Claim 5
Dependent Claim
37 words
An incinerator according to claim 3 wherein backwardly bent flanges are formed on said longitudinal edges of said elongated panels, and further comprising fastening means securing together flanges of adjacent panels with said heat exchange means therebetween.
Claim 6
Dependent Claim
67 words
An incinerator according to claim 4 wherein said fastening means extend through said flanges and through said heat exchange means, and said fastening means are spaced along the length of said elongated panels, and said passing means includes a fan to draw said mixture through said preheat zone and to force the same into said burner tube at a higher pressure than that of said preheat zone.
Claim 7
Dependent Claim
40 words
An incinerator according to claim 4 wherein said heat exchange means comprise elongated thin metal plates which extend into said burner tube one-third to one-half of the radial distance between the circumference of said burner tube and the center thereof.
Claim 8
Dependent Claim
47 words
An incinerator according to claim 4 wherein said heat exchange means comprise elongated thin metal plates, there being a plurality of such elongated metal plates between each of said elongated panels, and the outer and inner longitudinal edges of said plates are bent away from each other.
Claim 9
Dependent Claim
28 words
An incinerator according to claim 1 wherein said heat exchange means extenD outwardly to said surrounding means and form spacers between said burner tube and said surrounding means.
Claim 10
Dependent Claim
21 words
An incinerator according to claim 1 wherein said surrounding means is a tubular member in concentric relationship to said burner tube.
Claim 11
Dependent Claim
63 words
An incinerator according to claim 9 wherein said inlet opening of said surrounding means is adjacent to said outlet end of said burner tube, and said outlet opening of said surrounding means is adjacent to said inlet end of said burner tube, whereby the flow of said mixture through said preheat zone is countercurrent to the flow of gases through said burner tube.
Claim 12
Dependent Claim
156 words
An incinerator for oxidizing combustible fumes contained in a mixture of such fumes and air, said incinerator comprising: a narrow elongated burner tube having an inlet end and an outlet end; means in said elongated tube for heating gases passing therethrough to an elevated temperature suitable for oxidizing said combustible fumes in said mixture; means surrounding at least a portion of said elongated tube defining a preheat zone for said mixture, said surrounding means including an inlet opening for receiving said mixture, and an outlet opening for discharging said mixture; means communicating with said burner tube and outlet opening of said surrounding means for drawing said mixture through said preheat zone and for forcing the same into said burner tube at a pressure greater than the pressure within said preheat zone; the improvement which comprises: said elongated burner tube comprising a plurality of elongated panels; and means joining said panels together at the longitudinal edges thereof.
Claim 13
Dependent Claim
156 words
An incinerator for oxidizing combustible fumes contained in a mixture of such fumes and air, said incinerator comprising: a narrow elongated burner tube having an inlet end and an outlet end; means in said elongated tube for heating gases passing therethrough to an elevated temperature suitable for oxidizing said combustible fumes in said mixture; means surrounding at least a portion of said elongated tube defining a preheat zone for said mixture, said surrounding means including an inlet opening for receiving said mixture, and an outlet opening for discharging said mixture; means communicating with said burner tube and outlet opening of said surrounding means for drawing said mixture through said preheat zone and for forcing the same into said burner tube at a pressure greater than the pressure within said preheat zone; the improvement which comprises: said elongated burner tube comprising a plurality of elongated panels; and means joining said panels together at the longitudinal edges thereof.
Claim 14
Dependent Claim
31 words
An incinerator according to claim 11 and further comprising surface extension means secured to said burner tube between said elongated panels to increase the heat exchange area of said burner tube.
Claim 15
Dependent Claim
20 words
An incinerator according to claim 12 wherein said surface extension means comprise metal fins which extend into said preheat zone.
Claim 16
Dependent Claim
20 words
An incinerator according to claim 12 wherein said surface extension means comprise metal fins which extend into said burner tube.
Claim 17
Dependent Claim
33 words
An incinerator according to claim 11 wherein each of said panels contains fastening means extending outwardly of the longitudinal edges thereof, and said joining means extend through said fastening means to adjacent panels.
Claim 18
Dependent Claim
39 words
An incinerator according to claim 11 wherein said joining means permits escapement of gases from within said burner tube to said preheat zone to assist in heat transfer from the interior of said burner tube into said preheat zone.
Claim 19
Dependent Claim
195 words
In an incinerator for oxidizing combustible fumes contained in a mixture of such fumes and air, said incinerator comprising: a narrow elongated burner tube having an inlet end and an outlet end; means in said elongated tube for heating gases passing therethrough to an elevated temperature suitable for oxidizing said combustible fumes in said mixture; means for heat exchanging said mixture with hot gases within said elongated burner tube, said heat exchange means including an inlet opening for receiving said mixture and an outlet opening for discharging said mixture; and means communicating with said burner tube inlet and said outlet opening of said heat exchange means for drawing said mixture through said preheat zone and for forcing the same into said burner tube at a pressure greater than the pressure within the preheat zone; the improvement which comprises: said elongated burner tube comprising a plurality of elongated panels; means joining said panels together at the longitudinal edges thereof; and surface extension means extending between the interior of said burner tube and said heat exchange means at said longitudinal edges of said panels to facilitate heat transfer between said burner tube and said heat exchange means.
Claim 20
Dependent Claim
195 words
In an incinerator for oxidizing combustible fumes contained in a mixture of such fumes and air, said incinerator comprising: a narrow elongated burner tube having an inlet end and an outlet end; means in said elongated tube for heating gases passing therethrough to an elevated temperature suitable for oxidizing said combustible fumes in said mixture; means for heat exchanging said mixture with hot gases within said elongated burner tube, said heat exchange means including an inlet opening for receiving said mixture and an outlet opening for discharging said mixture; and means communicating with said burner tube inlet and said outlet opening of said heat exchange means for drawing said mixture through said preheat zone and for forcing the same into said burner tube at a pressure greater than the pressure within the preheat zone; the improvement which comprises: said elongated burner tube comprising a plurality of elongated panels; means joining said panels together at the longitudinal edges thereof; and surface extension means extending between the interior of said burner tube and said heat exchange means at said longitudinal edges of said panels to facilitate heat transfer between said burner tube and said heat exchange means.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |