Patent EP0299841A2 successfully refreshed from Google Patents.
US3810431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recirculation of gases generated in ash pit
Assignee: Enercon Systems Inc
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Filing: 1973-03-29
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Granted: 1974-05-14
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Expires: 1993-03-29
Abstract
Abstract A grateless incinerator with a controlled atmosphere having a pyrolyzation chamber, an afterburner chamber that is downstream therefrom, and an ash discharge chamber subjacent the pyrolyzing chamber. Ash from incinerated refuse in the pyrolyzing chamber may be quickly dumped to the ash discharge chamber and a new charge of refuse placed back in the pyrolyzing chamber. Any smoke, dust or fumes generated by the hot ash in the ash discharge chamber is allowed to vent to an underfire air inlet to the pyrolyzation chamber.
Inventors
- 👤 L Lavely
- 👤 N Hazzard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:15
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/02; F23G5/027
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
148 words
An incinerator for burning combustible waste material that comprises a pyrolyzing chamber having a loading opening for the admission of waste material and an outlet opening for the eXhaust of gases generated therein, an outlet duct including an afterburner chamber therein connected to said outlet opening, a source of air for the pyrolyzing chamber, a passageway supplying air from said source and exhausting into the lower portion of the pyrolyzing chamber to provide a source of combustion air beneath the charge of waste material therein, an ash receiving chamber isolated from the pyrolyzing chamber, means moving the ash from the pyrolyzing chamber to the ash receiving chamber, and duct means connecting the ash receiving chamber to the pyrolyzing chamber to permit fumes generated in the ash receiving chamber to circulate back to the pyrolyzing chamber and filter through the waste material therein before being exhausted to the afterburner.
Claim 2
Dependent Claim
148 words
An incinerator for burning combustible waste material that comprises a pyrolyzing chamber having a loading opening for the admission of waste material and an outlet opening for the eXhaust of gases generated therein, an outlet duct including an afterburner chamber therein connected to said outlet opening, a source of air for the pyrolyzing chamber, a passageway supplying air from said source and exhausting into the lower portion of the pyrolyzing chamber to provide a source of combustion air beneath the charge of waste material therein, an ash receiving chamber isolated from the pyrolyzing chamber, means moving the ash from the pyrolyzing chamber to the ash receiving chamber, and duct means connecting the ash receiving chamber to the pyrolyzing chamber to permit fumes generated in the ash receiving chamber to circulate back to the pyrolyzing chamber and filter through the waste material therein before being exhausted to the afterburner.
Claim 3
Dependent Claim
49 words
An incinerator as defined in claim 1 wherein the duct means conducting fumes from the ash receiving chamber is connected to the passageway that supplies air to the pyrolyzing chamber whereby the fumes from the ash receiving chamber are conducted into the pyrolyzing chamber along with the combustion air.
Claim 4
Dependent Claim
68 words
An incinerator as defined in claim 2 including a restriction in the passageway supplying air from said source to the pyrolyzing chamber to produce an area of low pressure, and means connecting the ash receiving chamber to the pyrolyzing chamber at said area of low pressure to thus produce a continuous aspiration effect upon the fumes of said ash receiving chamber when air is flowing through said duct.
Claim 5
Dependent Claim
164 words
An incinerator for burning combustible waste that comprises a pyrolyzing chamber having a loading opening for the admission of a charge of waste material and an outlet opening for the exhaust of gases generated therein, an outlet duct including an afterburner chamber therein connected to said outlet opening, a source of combustion air for the pyrolyzing chamber, an air supply passageway supplying air from said source to the lower portion of said pyrolyzing chamber, an ash receiving chamber subjacent the pyrolyzing chamber, closure means movable between open and closed positions separating the pyrolyzing chamber from the ash receiving chamber, means actuating the movable closure means to interconnect the pyrolyzing chamber with the ash receiving chamber, and duct means connecting the ash receiving chamber with the passageway supplying air to the pyrolyzing chamber whereby smoke exhausting from the ash receiving chamber is introduced into the lower portion of the pyrolyzing chamber and filtered through the charge of waste therein before being exhausted to the afterburner.
Claim 6
Dependent Claim
164 words
An incinerator for burning combustible waste that comprises a pyrolyzing chamber having a loading opening for the admission of a charge of waste material and an outlet opening for the exhaust of gases generated therein, an outlet duct including an afterburner chamber therein connected to said outlet opening, a source of combustion air for the pyrolyzing chamber, an air supply passageway supplying air from said source to the lower portion of said pyrolyzing chamber, an ash receiving chamber subjacent the pyrolyzing chamber, closure means movable between open and closed positions separating the pyrolyzing chamber from the ash receiving chamber, means actuating the movable closure means to interconnect the pyrolyzing chamber with the ash receiving chamber, and duct means connecting the ash receiving chamber with the passageway supplying air to the pyrolyzing chamber whereby smoke exhausting from the ash receiving chamber is introduced into the lower portion of the pyrolyzing chamber and filtered through the charge of waste therein before being exhausted to the afterburner.
Claim 7
Dependent Claim
47 words
An incinerator as defined in claim 4 including a venturi-like restriction in the air supply passageway, and means linking said venturi-like restriction to the duct from the ash receiving chamber to subject the fumes therein to suction produced by the flow of combustion air through the venturi.
Claim 8
Dependent Claim
37 words
An incinerator as defined in claim 4 wherein the duct from the ash receiving chamber is connected to the source of air for the pyrolyzing chamber whereby fumes from the ash receiving chamber mixed with combustion air.
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) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |