US3914093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion apparatus
Assignee: Airoil Flaregas Ltd
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Filing: 1974-01-09
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Granted: 1975-10-21
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Expires: 1994-01-09
Abstract
Abstract Combustion apparatus usable in a ground flare and employing discharge means, such as a nozzle, for emitting a combustible waste gas into the inlet of an air inducing device. The air inducing device is fed with an inducing medium, preferably steam, which causes air to be induced into the inlet to mix with the waste gas. The air inducing device then preferably emits a mixture of air, gas and steam for combustion. To ensure that the combustion process is substantially smokeless, control is effected by varying the distance between the outlet of the discharge means and the inlet of the air inducing device.
Inventors
- 👤 Albert Edward Proctor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:13
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/60; B; B01; B01F; B01F25/00; B01F25/30; B01F25/31; B01F25/311; F23D14/62; F23D14/64
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
87 words
IN AN APPARATUS FOR MIXING AIR WITH WASTE GAS FOR COMBUSTION, SAID APPARATUS HAVING MEANS FOR DISCHARGING WASTE GAS AND HAVING A SEPERATE AIR INCLUDING DEVICE WHICH OPERATES IN THE MANNER KNOWN AS COANDA EFFECT, SAID AIR INDUCING DEVICE BEING AXIALLY SPACED FROM SAID DISCHARGE MEANS, SAID AIR INDUCING DEVICE HAVING A MAIN INLET FOR RECEIVING THE WASTE GAS EMITTED BY SAID DISCHARGE MEANS TOGETHER WITH AIR INDUCED INTO SAID DEVICE, THE IMPROVEMENT COMPRISING MEANS FOR VARYING THE DISTANCE BETWEEN THE MAIN INLET OF THE AIR INDUCING
Claim 2
Dependent Claim
87 words
IN AN APPARATUS FOR MIXING AIR WITH WASTE GAS FOR COMBUSTION, SAID APPARATUS HAVING MEANS FOR DISCHARGING WASTE GAS AND HAVING A SEPERATE AIR INCLUDING DEVICE WHICH OPERATES IN THE MANNER KNOWN AS COANDA EFFECT, SAID AIR INDUCING DEVICE BEING AXIALLY SPACED FROM SAID DISCHARGE MEANS, SAID AIR INDUCING DEVICE HAVING A MAIN INLET FOR RECEIVING THE WASTE GAS EMITTED BY SAID DISCHARGE MEANS TOGETHER WITH AIR INDUCED INTO SAID DEVICE, THE IMPROVEMENT COMPRISING MEANS FOR VARYING THE DISTANCE BETWEEN THE MAIN INLET OF THE AIR INDUCING
Claim 3
Dependent Claim
21 words
Apparatus according to claim 1, wherein an inducing medium is fed to the device to induce air into said main inlet.
Claim 4
Dependent Claim
35 words
Apparatus according to claim 2, wherein steam is used as an inducing medium and the device has an outlet which, in operation, discharges a mixture of waste gas, air and steam into a combustion zone.
Claim 5
Dependent Claim
43 words
Apparatus according to claim 3, wherein the air inducing device has a bore of aerofoil section extending between its outlet and inset and an internal Coanda annulus over which the inducing medium is made to flow to induce said air into the inlet.
Claim 6
Dependent Claim
12 words
Apparatus according to claim 1, wherein the discharging means is a nozzle.
Claim 7
Dependent Claim
12 words
Apparatus according to claim 1 wherein the distance-varying means is manually operable.
Claim 8
Dependent Claim
16 words
Apparatus according to claim 1 wherein the distance-varying means is operated automatically by a control system.
Claim 9
Dependent Claim
27 words
Apparatus according to claim 7, wherein the control system is adapted to operate the distance-varying means in accordance with changes in the pressure of the waste gas.
Claim 10
Dependent Claim
25 words
Apparatus according to claim 5, wherein the nozzle is provided with an insert which is displaceable longitudinally of the nozzle to effect said distance variation.
Claim 11
Dependent Claim
17 words
Apparatus according to claim 1 wherein the distance-varying means at least includes a piston and cylinder unit.
Claim 12
Dependent Claim
109 words
In an apparatus for mixing air with waste gas for combustion, said apparatus having means for discharging waste gas and having a separate air inducing device which operates in the manner known as the Coanda Effect, said air inducing device having a main inlet for receiving the waste gas emitted by said discharging means together with air induced into said device, the improvement therein comprising: means for varying the distance between said main inlet and said discharging means to control mixing and combustion, and a control systeM for automatically operating said distance varying means, said control system operating in accordance with changes in the pressure of the waste gas.
Claim 13
Dependent Claim
109 words
In an apparatus for mixing air with waste gas for combustion, said apparatus having means for discharging waste gas and having a separate air inducing device which operates in the manner known as the Coanda Effect, said air inducing device having a main inlet for receiving the waste gas emitted by said discharging means together with air induced into said device, the improvement therein comprising: means for varying the distance between said main inlet and said discharging means to control mixing and combustion, and a control systeM for automatically operating said distance varying means, said control system operating in accordance with changes in the pressure of the waste gas.
Claim 14
Dependent Claim
101 words
In an apparatus for mixing air with waste gas for combustion, said apparatus having means for discharging waste gas and having a separate air inducing device which operates in the manner known as the Coanda Effect, said air inducing device having a main inlet for receiving the waste gas emitted by said discharging means together with air induced into said device, the improvement therein comprising: means for varying the distance between said main inlet and said discharging means to control mixing and combustion, said discharging means including a nozzle, said nozzle having a longitudinally displaceable insert to effect said distance variation.
Claim 15
Dependent Claim
101 words
In an apparatus for mixing air with waste gas for combustion, said apparatus having means for discharging waste gas and having a separate air inducing device which operates in the manner known as the Coanda Effect, said air inducing device having a main inlet for receiving the waste gas emitted by said discharging means together with air induced into said device, the improvement therein comprising: means for varying the distance between said main inlet and said discharging means to control mixing and combustion, said discharging means including a nozzle, said nozzle having a longitudinally displaceable insert to effect said distance variation.
Claim 16
Dependent Claim
93 words
In an apparatus for mixing air with waste gas for combustion, said apparatus having means for discharging waste gas and having a separate air inducing device which operates in the manner known as the Coanda Effect, said air inducing device having a main inlet for receiving the waste gas emitted by said discharging means together with air induced into said device, the improvement therein comprising: means for varying the distance between said main inlet and said discharging means to control mixing and combustion, said distance varying means including a piston and cylinder unit.
Claim 17
Dependent Claim
93 words
In an apparatus for mixing air with waste gas for combustion, said apparatus having means for discharging waste gas and having a separate air inducing device which operates in the manner known as the Coanda Effect, said air inducing device having a main inlet for receiving the waste gas emitted by said discharging means together with air induced into said device, the improvement therein comprising: means for varying the distance between said main inlet and said discharging means to control mixing and combustion, said distance varying means including a piston and cylinder unit.
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |