US3776151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for eliminating smoke emissions from incinerators
Assignee: Individual
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Filing: 1972-02-28
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Granted: 1973-12-04
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Expires: 1992-02-28
Abstract
Abstract Smoke emissions are eliminated from an incinerator by admitting cool air into a stack arranged to receive smoke from a combustion chamber for inducing a draft in the stack which opposes a natural draft therein. Smoke is carried along by the induced draft and returned to the combustion chamber, so that only gases free of particulate matter are emitted from the stack. The induced draft returning to the combustion chamber as overfire air has sufficient pressure for creating turbulence in the combustion chamber for retaining the smoke in the combustion chamber a time sufficient to ensure complete combustion thereof. The cool air is admitted into the stack by a louvered portion provided in the stack and arranged adjacent the combustion chamber, and, alternatively, one or more louvered elements connected to the combustion chamber and the stack so as to be in parallel with the louvered portion. Ducts are connected to the louvered portion and louvered elements to return smoke to the combustion chamber.
Inventors
- 👤 W Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:10
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/24; F23B; F23B7/00; F23B7/002; F23B7/007
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
225 words
An incinerator comprising in combination: a. a stack arranged to receive smoke, and including means for admitting cool air into the stack for inducing a draft therein which opposes a natural draft in the stack; b. means connected to said stack for returning smoke carried along by the induced draft, so that only gases free of particulate matter are emitted from said stack; and c. container means having wall defining a combustion chamber, and wherein said stack is connected to said container means and arranged in communication with the combustion chamber for receiving smoke therefrom, said means for admitting including a louvered portion formed in said stack and arranged adjacent to the combustion chamber, the means for returning including a duct connected to said container means and arranged in communication with the combustion chamber so as to provide an overfire air supply for creating sufficient turbulence in the combustion chamber for retaining the smoke in the combustion chamber a time sufficient to ensure complete combustion thereof, and at least one louvered element connected to said container means and arranged in communications with the combustion chamber for receiving smoke therefrom, and connected to said stack in parallel with the louvered portion of said stack, a duct connected to said louvered element and said container means for returning smoke from said louvered element to the combustion chamber.
Claim 2
Dependent Claim
225 words
An incinerator comprising in combination: a. a stack arranged to receive smoke, and including means for admitting cool air into the stack for inducing a draft therein which opposes a natural draft in the stack; b. means connected to said stack for returning smoke carried along by the induced draft, so that only gases free of particulate matter are emitted from said stack; and c. container means having wall defining a combustion chamber, and wherein said stack is connected to said container means and arranged in communication with the combustion chamber for receiving smoke therefrom, said means for admitting including a louvered portion formed in said stack and arranged adjacent to the combustion chamber, the means for returning including a duct connected to said container means and arranged in communication with the combustion chamber so as to provide an overfire air supply for creating sufficient turbulence in the combustion chamber for retaining the smoke in the combustion chamber a time sufficient to ensure complete combustion thereof, and at least one louvered element connected to said container means and arranged in communications with the combustion chamber for receiving smoke therefrom, and connected to said stack in parallel with the louvered portion of said stack, a duct connected to said louvered element and said container means for returning smoke from said louvered element to the combustion chamber.
Claim 3
Dependent Claim
153 words
An incinerator comprising in combination: a. a stack arranged to receive smoke, and including means for admitting cool air into the stack for inducing a draft therein which opposes a natural draft in the stack; b. means connected to said stack for returning smoke carried along by the induced draft, so that only gases free of particulate matter are emitted from said stack; and c. container means having walls defining a combustion chamber, and wherein said stack is connected to said container means and arranged in communication with the combustion chamber for receiving smoke therefrom, at least one louvered element connected to said container means and arranged in communication with the combustion chamber for receiving smoke therefrom, and connected to said stack in parallel with the louvered portion of said stack, a duct connected to said louvered element and said container means for returning smoke from said louvered element to the combustion chamber.
Claim 4
Dependent Claim
153 words
An incinerator comprising in combination: a. a stack arranged to receive smoke, and including means for admitting cool air into the stack for inducing a draft therein which opposes a natural draft in the stack; b. means connected to said stack for returning smoke carried along by the induced draft, so that only gases free of particulate matter are emitted from said stack; and c. container means having walls defining a combustion chamber, and wherein said stack is connected to said container means and arranged in communication with the combustion chamber for receiving smoke therefrom, at least one louvered element connected to said container means and arranged in communication with the combustion chamber for receiving smoke therefrom, and connected to said stack in parallel with the louvered portion of said stack, a duct connected to said louvered element and said container means for returning smoke from said louvered element to the combustion chamber.
Claim 5
Dependent Claim
33 words
A structure as defined in claim 2, wherein the means for returning includes a duct connected to the louvered member, and to said container means and arranged in communication with the combustion chamber.
Claim 6
Dependent Claim
33 words
A structure as defined in claim 1, wherein the means for returning includes a duct connected to the louvered member, and to said container means and arranged in communication with the combustion chamber.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |