US3633886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating furnaces
Assignee: Owens Corning
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Filing: 1970-04-20
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Granted: 1972-01-11
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Expires: 1990-04-20
Abstract
Abstract A furnace having sidewalls, end walls, a top wall and a bottom wall defining a heating chamber in which material to be heated enters the heating chamber through one of the end walls and exits through the other of the end walls. A plurality of burner stations are spaced along at least one of the sidewalls. Exhaust port means for each burner station are formed in a wall above its associated burner station whereby a flow pattern for substantially the combustion products of each burner station is established from each burner station out in a first current over material in the heating chamber and up and back over the first current in a second current to the exhaust port means above that burner station. Recuperator means are provided for each exhaust port means for passing combustion products from the exhaust port means in heat exchange relationship with combustion air for the burner stations to preheat the combustion air.
Inventors
- 👤 Magnus L Froberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:02
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/235; Y; Y02; Y02P; Y02P40/00; Y02P40/50
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
146 words
A furnace including sidewalls, end walls, a top wall and a bottom wall defining a heating chamber in which material to be heated enters said heating chamber through one of said end walls and exiTs through the other of said end walls; a plurality of burner stations spaced along one of said sidewalls; exhaust port means for each burner station formed in a wall above its associated burner stations whereby a flow pattern for substantially all of the combustion products from each burner station is established from each burner station out in a first current over material in said heating chamber and up and back over said first current to the exhaust port means above that burner station; and recuperator means for each exhaust port means for passing combustion products from said exhaust port means in heat exchange relationship with combustion air for said burner stations.
Claim 2
Dependent Claim
146 words
A furnace including sidewalls, end walls, a top wall and a bottom wall defining a heating chamber in which material to be heated enters said heating chamber through one of said end walls and exiTs through the other of said end walls; a plurality of burner stations spaced along one of said sidewalls; exhaust port means for each burner station formed in a wall above its associated burner stations whereby a flow pattern for substantially all of the combustion products from each burner station is established from each burner station out in a first current over material in said heating chamber and up and back over said first current to the exhaust port means above that burner station; and recuperator means for each exhaust port means for passing combustion products from said exhaust port means in heat exchange relationship with combustion air for said burner stations.
Claim 3
Dependent Claim
28 words
Apparatus as defined in claim 1 which further includes a common header connected to all of said recuperator means for supplying preheated combustion air to said burner stations.
Claim 4
Dependent Claim
133 words
Apparatus as defined in claim 1 which further includes a second plurality of burner stations spaced along the other of said sidewalls; exhaust port means for each of said second plurality of burner stations formed in a wall above its associated burner station whereby a flow pattern for substantially all of the combustion products from each of the second plurality of burner stations is established from a burner station out in a first current over material in said heating chamber and up and back over said first current to the associated exhaust port means; and recuperator means for each of said exhaust port means for each of said second plurality of burner stations for passing combustion products from said exhaust port means in heat exchange relationship with combustion air for said burner stations.
Claim 5
Dependent Claim
69 words
Apparatus as defined in claim 3 which further includes a first common header connected to all of said recuperator means on one side of said furnace for supplying preheated combustion air to burner stations on said one side, and a second common header connected to all of said recuperator means on the other side of said furnace for supplying preheated combustion air to burner stations on said other side.
Claim 6
Dependent Claim
31 words
Apparatus as defined in claim 3 in which each of the first-mentioned plurality of burner stations is aligned with one of said second plurality of burner stations across the heating chamber.
Claim 7
Dependent Claim
182 words
In a tank-type glass-melting furnace wherein said furnace includes sidewalls, end walls, a top wall and a bottom wall defining a channel in which batch materials are melted to form a stream of molten glass that flows from a batch charge area in one end wall to a molten glass discharge area in the other end wall; a plurality of burner stations spaced along one of said sidewalls; exhaust port means for each burner station formed in said one sidewall above its associated burner station and aligned therewith whereby a flow pattern for substantially all of the combustion products from each burner station is established out in a first current over the glass in the heating chamber and up and back over the first current in a second current to the exhaust port means in the sidewall above that burner station; and recuperator means for each exhaust port means including a first chamber for receiving combustion products from an exhaust port means and a second chamber in heat exchange relationship with said first chamber for preheating combustion air for said burner stations.
Claim 8
Dependent Claim
182 words
In a tank-type glass-melting furnace wherein said furnace includes sidewalls, end walls, a top wall and a bottom wall defining a channel in which batch materials are melted to form a stream of molten glass that flows from a batch charge area in one end wall to a molten glass discharge area in the other end wall; a plurality of burner stations spaced along one of said sidewalls; exhaust port means for each burner station formed in said one sidewall above its associated burner station and aligned therewith whereby a flow pattern for substantially all of the combustion products from each burner station is established out in a first current over the glass in the heating chamber and up and back over the first current in a second current to the exhaust port means in the sidewall above that burner station; and recuperator means for each exhaust port means including a first chamber for receiving combustion products from an exhaust port means and a second chamber in heat exchange relationship with said first chamber for preheating combustion air for said burner stations.
Claim 9
Dependent Claim
30 words
Apparatus as defined in claim 6 which further includes a common header connected to said second chambers of said recuperator means for supplying preheated combustion air to said burner stations.
Claim 10
Dependent Claim
61 words
Apparatus as defined in claim 7 in which said common header is connected to supply combustion air to a burner station, substantially all of which has been preheated by exhaust combustion products from that burner station to correlate the temperature of the preheated combustion air with the amount of heat desired to be supplied to the furnace by that burner station.
Claim 11
Dependent Claim
162 words
Apparatus as defined in claim 6 which further includes a second plurality of burner stations sPaced along the other of said sidewalls; exhaust port means for each of said second plurality of burner stations formed in said other side wall above its associated burner station and aligned therewith whereby a flow pattern for substantially all of the combustion products from each of said second plurality of burner stations is established from a burner station out in a first current over the glass in the heating chamber and up and back over the first current in a second current to the exhaust port means in the sidewall above that burner station; and recuperator means for each of said exhaust port means for each of said second plurality of burner stations including a first chamber for receiving combustion products from an exhaust port means and a second chamber in heat exchange relationship with said first chamber for preheating combustion air for said burner stations.
Claim 12
Dependent Claim
111 words
Apparatus as defined in claim 9 which further includes a first common header connected to receive preheated combustion air from all of said recuperator means on one side of said furnace and supply combustion air to burner stations on said one side; and a second common header connected to receive preheated combustion air from all of said recuperator means on the other side of said furnace and supply combustion air to burner stations on said other side; each common header being connected to circulate combustion air to a burner station which has received substantially all of its preheat from a heat exchange with exhaust combustion products from the same burner station.
Claim 13
Dependent Claim
51 words
Apparatus as defined in claim 9 in which each of the first-mentioned plurality of burner stations is paired with and positioned substantially directly across from one of aid second plurality of burner stations so that the flow patterns from each pair of burner stations define a heating zone across said channel.
Claim 14
Dependent Claim
24 words
Apparatus as defined in claim 11 which further includes control means for each burner station for regulating the temperature of each of said zones.
Claim 15
Dependent Claim
36 words
Apparatus as defined in claim 9 which further includes means for selectively blocking flow of exhaust combustion products and combustion air through each recuperator means to enable repair or maintenance thereof without shutting down the furnace.
Claim 16
Dependent Claim
130 words
A firing system adaptable for use with a furnace which requires a plurality of burners comprising a. a burner station for disposition through a wall of a furnace, b. individual recuperator means for said burner station, and c. exhaust port conduit means having a combustion products receiving end disposed above said burner station for conducting combustion products from that burner station to the individual recuperator means for that burner station, d. said combustion products receiving end of said conduit means being aligned with its associated burner station whereby a flow pattern for substantially all of the combustion products from the associated burner station is established out in a first current from the burner station and up and back over the first current in a second current to said conduit means.
Claim 17
Dependent Claim
130 words
A firing system adaptable for use with a furnace which requires a plurality of burners comprising a. a burner station for disposition through a wall of a furnace, b. individual recuperator means for said burner station, and c. exhaust port conduit means having a combustion products receiving end disposed above said burner station for conducting combustion products from that burner station to the individual recuperator means for that burner station, d. said combustion products receiving end of said conduit means being aligned with its associated burner station whereby a flow pattern for substantially all of the combustion products from the associated burner station is established out in a first current from the burner station and up and back over the first current in a second current to said conduit means.
Claim 18
Dependent Claim
138 words
A firing system adaptable for use with a furnace which requires a plurality of burners comprising, a. a plurality of aligned burner stations for disposition along and through one wall of a furnace, b. individual recuperator means for each of said burner stations, and c. exhaust port conduit means for each of said plurality of burner stations for conducting combustion products from its associated burner station to the recuperator means individual to that station, d. each exhaust port conduit means having a combustion products receiving end disposed above and aligned with its associate burner station whereby a flow pattern for substantially all of the combustion products from its associated burner station is established out in a first current from the burner station and up and back over the first current in a second current to said conduit means.
Claim 19
Dependent Claim
138 words
A firing system adaptable for use with a furnace which requires a plurality of burners comprising, a. a plurality of aligned burner stations for disposition along and through one wall of a furnace, b. individual recuperator means for each of said burner stations, and c. exhaust port conduit means for each of said plurality of burner stations for conducting combustion products from its associated burner station to the recuperator means individual to that station, d. each exhaust port conduit means having a combustion products receiving end disposed above and aligned with its associate burner station whereby a flow pattern for substantially all of the combustion products from its associated burner station is established out in a first current from the burner station and up and back over the first current in a second current to said conduit means.
Claim 20
Dependent Claim
140 words
A firiNg system adaptable for use with a furnace which has opposing walls and requires a plurality of burners comprising, a. a pair of opposed burner stations for disposition through opposing walls of a furnace, b. individual recuperator means for each of said burner stations, and c. exhaust port conduit means for each of said plurality of burner stations for conducting combustion products from its associated burner station to the recuperator means individual to that station, d. each exhaust port conduit means having a combustion products receiving end disposed above and aligned with its associated burner station whereby a flow pattern for substantially all of the combustion products from its associated burner station is established out in a first current from the burner station and up and back over the first current in a second current to said conduit means.
Claim 21
Dependent Claim
140 words
A firiNg system adaptable for use with a furnace which has opposing walls and requires a plurality of burners comprising, a. a pair of opposed burner stations for disposition through opposing walls of a furnace, b. individual recuperator means for each of said burner stations, and c. exhaust port conduit means for each of said plurality of burner stations for conducting combustion products from its associated burner station to the recuperator means individual to that station, d. each exhaust port conduit means having a combustion products receiving end disposed above and aligned with its associated burner station whereby a flow pattern for substantially all of the combustion products from its associated burner station is established out in a first current from the burner station and up and back over the first current in a second current to said conduit means.
References Cited (Backward Citations)
US1661836A
Cited
US3476368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |