Patent US3700173A successfully refreshed from Google Patents.
US3700173A
Expired / Lapsed
US
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Diffuser
Assignee: Combustion Engineering Inc
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Filing: 1970-12-30
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Granted: 1972-10-24
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Expires: 1990-12-30
Abstract
Abstract An improved diffuser for liquid fuel fired burners wherein the diffuser has a frusto-conical surface located in the combustionsupporting air path with widely spaced slots formed in the frusto-conical surface to divide the surface into several distinct frustums to direct combustion-supporting air into the fuel spray as independent streams for the complete mixing thereof. The tabs from which the slots are formed are bent forward at substantially an 80* angle with respect to the frustoconical surface to direct the air streams into the fuel spray in a tangential manner.
Inventors
- 👤 Elmer Ketchum Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:01
CPC Classifications
F; F23; F23D; F23D11/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
117 words
An improved diffuser for liquid fuel fired burners having liquid fuel admission means emitting fuel therefrom located in a combustion-supporting air stream, said diffuser comprising: a support means; a frusto-conical surface on said support means; at least a series of widely spaced slots adjacent the outer periphery of said frusto-conical surface; at least a series of widely spaced slots adjacent the inner periphery of said frustoconical surface; and tabs extending from said slots adjacent said outer and inner peripheries of said frusto-conical surface, said tabs being bent forwardly of said slots whereby said combustionsupporting air stream is divided into a plurality of independent, distinct air streams directed into said fuel emitted from said liquid fuel emission means.
Claim 2
Dependent Claim
117 words
An improved diffuser for liquid fuel fired burners having liquid fuel admission means emitting fuel therefrom located in a combustion-supporting air stream, said diffuser comprising: a support means; a frusto-conical surface on said support means; at least a series of widely spaced slots adjacent the outer periphery of said frusto-conical surface; at least a series of widely spaced slots adjacent the inner periphery of said frustoconical surface; and tabs extending from said slots adjacent said outer and inner peripheries of said frusto-conical surface, said tabs being bent forwardly of said slots whereby said combustionsupporting air stream is divided into a plurality of independent, distinct air streams directed into said fuel emitted from said liquid fuel emission means.
Claim 3
Dependent Claim
41 words
The apparatus of claim 1 wherein said support means is mounted with respect to said liquid fuel admission means of said burner so as to accurately position said diffuser relative to said liquid fuel admission means in the combustion-supporting air stream.
Claim 4
Dependent Claim
24 words
The apparatus of claim 2 wherein said support means is a sleeve which is positioned so as to surround said liquid fuel admission means.
Claim 5
Dependent Claim
36 words
The apparatus of claim 3 wherein said slots adjacent tO the outer periphery of said frusto-conical surface are of a V shape so as to divide said frusto-conical surface into a series of interconnected square fins.
Claim 6
Dependent Claim
22 words
The apparatus of claim 3 wherein said slots adjacent the inner periphery of said frusto-conical surface are of a substantially square shape.
Claim 7
Dependent Claim
51 words
The apparatus of claim 3 wherein said slots adjacent the inner periphery of said frusto-conical surface are a substantially square shape, and said slots adjacent the outer periphery of said frusto-conical surface are of a V shape so as to form said frusto-conical surface into a series of interconnected square fins.
Claim 8
Dependent Claim
28 words
The apparatus of claim 6 wherein said tabs extending from said slots are bent forwardly of said frusto-conical surface at an angle of substantially 80* with respect thereto.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |