US4540361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enhanced pneumatic regenerator flow control
Assignee: PPG Industries Inc
•
Filing: 1984-01-30
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Granted: 1985-09-10
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Expires: 2004-01-30
Abstract
Abstract Pneumatic control of flow patterns in regenerators is improved by the use of flow amplifier nozzles.
Inventors
- 👤 Robert Gagne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:50
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/30; F27B9/3044; C; C03; C03B; C03B5/00; C03B5/16; C03B5/235; C03B5/237; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y10; Y10S; Y10S165/00; Y10S165/908
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
89 words
A method of operating a regenerative furnace wherein gases are passed through passageways between a combustion chamber and a regenerator bed, injecting a jet of gas into a moving stream of gas in at least one of the passageways so as to affect movement of the stream and to thereby alter the flow pattern of gases between the combustion chamber and the regenerator bed, the jet being a narrow, high velocity jet discharged adjacent to a nozzle surface to flow along the surface and entrain gas within the passageway.
Claim 2
Independent Claim
89 words
A method of operating a regenerative furnace wherein gases are passed through passageways between a combustion chamber and a regenerator bed, injecting a jet of gas into a moving stream of gas in at least one of the passageways so as to affect movement of the stream and to thereby alter the flow pattern of gases between the combustion chamber and the regenerator bed, the jet being a narrow, high velocity jet discharged adjacent to a nozzle surface to flow along the surface and entrain gas within the passageway.
Claim 3
Dependent Claim
26 words
The method of claim 1 wherein the gas entrainment in the passageway is at least ten times the volume flow rate of the high velocity jet.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein the high velocity jet is at supersonic velocity.
Claim 5
Dependent Claim
36 words
The method of claim 1 wherein the jet is discharged in a passageway that comprises a plenum in communication with a plurality of ports through which gas passes between the combustion chamber and the regenerator bed.
Claim 6
Dependent Claim
13 words
The method of claim 4 wherein the jet is directed toward the port.
Claim 7
Dependent Claim
31 words
The method of claim 1 wherein the jet is discharged into at least one of a plurality of ports through which gas passes between the combustion chamber and the regenerator bed.
Claim 8
Dependent Claim
14 words
The method of claim 1 wherein the gas supplied to the jet comprises air.
Claim 9
Dependent Claim
13 words
The method of claim 1 further including melting glass in the combustion chamber.
Claim 10
Dependent Claim
20 words
The method of claim 1 wherein the high velocity jet is discharged through a slit 0.01 and 0.1 inches wide.
Claim 11
Dependent Claim
15 words
The method of claim 9 wherein the slit is annular and encircles the nozzle surface.
Claim 12
Dependent Claim
21 words
The method of claim 1 wherein a plurality of jets is discharged into the passageways to alter the flow pattern therethrough.
Claim 13
Dependent Claim
48 words
The method of claim 1 wherein the jet is discharged into a passageway in communication with the regenerator bed along one side and with a row of ports communicating with the combustion chamber, and the jet is directed transversely to the direction of gas flow through the ports.
Claim 14
Independent Claim
89 words
A method of operating a regenerative furnace wherein gases are passed through a passageway between a flue and a regenerator bed which is in communication with a combustion chamber, injecting a jet of gas into a moving stream of gas in the passageway so as to effect movement of the stream and to thereby alter the flow pattern of gas through the regenerator bed, the jet being a narrow, high velocity jet discharged adjacent to a nozzle surface to flow along the surface and entrain gas within the passageway.
Claim 15
Independent Claim
89 words
A method of operating a regenerative furnace wherein gases are passed through a passageway between a flue and a regenerator bed which is in communication with a combustion chamber, injecting a jet of gas into a moving stream of gas in the passageway so as to effect movement of the stream and to thereby alter the flow pattern of gas through the regenerator bed, the jet being a narrow, high velocity jet discharged adjacent to a nozzle surface to flow along the surface and entrain gas within the passageway.
Claim 16
Dependent Claim
26 words
The method of claim 13 wherein the gas entrainment in the passageway is at least ten times the volume flow rate of the high velocity jet.
Claim 17
Dependent Claim
14 words
The method of claim 13 wherein the high velocity jet is at supersonic velocity.
Claim 18
Dependent Claim
38 words
The method of claim 13 wherein the gas jet is discharged into a passageway in communication at one end with the flue and along its length with the regenerator bed, wherein the jet is directed toward the flue.
Claim 19
Dependent Claim
14 words
The method of claim 13 wherein the gas discharged from the jet includes ammonia.
Claim 20
Dependent Claim
15 words
The method of claim 13 wherein the gas supplied to the jet comprises compressed air.
Claim 21
Dependent Claim
13 words
The method of claim 13 further including melting glass in the combustion chamber.
Claim 22
Dependent Claim
21 words
The method of claim 13 wherein a plurality of jets are discharged into the passageway to alter the flow pattern therethrough.
Claim 23
Dependent Claim
20 words
The method of claim 13 wherein the high velocity jet is discharged through a slit 0.01 to 0.1 inches wide.
Claim 24
Dependent Claim
15 words
The method of claim 21 wherein the slit is annular and encircles the nozzle surface.
References Cited (Backward Citations)
US1703460A
Cited
US4195780A
Cited
US4328020A
Cited
US4372770A
Cited
US4375235A
Cited
US4375236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |