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US4485968A Expired / Lapsed US ⏱️ 0.0 years remaining

Boiler nozzle

Assignee: Hydro Energy Systems Ltd
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Filing: 1982-09-07
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Granted: 1984-12-04
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Expires: 2002-09-07
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Abstract

Abstract A versatile mixing nozzle for dispensing polyphase fuels into a combustion zone of a boiler. The nozzle is characterized by a plurality of mixing chambers, a relatively low pressure-drop spray nozzle design and a stationary dispersing disk and radiation-protective shield partially projecting in front of the nozzle outlet ports.

Inventors

  • 👤 Camille J. Berthiaume

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 12:26
CPC Classifications
F; F23; F23D; F23D1/00; F23D1/005; B; B05; B05B; B05B7/00; B05B7/02; B05B7/04; B05B7/0416; B05B7/0433; F23D11/00; F23D11/10; F23D11/16

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 132 words
A mixing nozzle assembly for use in dispensing a combustible fuel into a combination zone comprising means for mixing said fuel within said assembly, said mixing means comprising: (a) dual conduit means forming means to asperate a fuel in one of said dual conduits with aspirating fluid in another of said conduits, (b) a first mixing zone in which said asperated fuel is mixed, (c) nozzle means which discharge said fuel into said boiler, (d) a dispersing means partially placed in the flow path of fluid being discharged into said boiler, and forming means to further disperse said fluid; (e) and wherein said nozzle comprises means to disperse said fuel, in a series of streams, the inner portion of each said stream of which impact said dispersing means at a uniform angle.
Claim 2
Dependent Claim 132 words
A mixing nozzle assembly for use in dispensing a combustible fuel into a combination zone comprising means for mixing said fuel within said assembly, said mixing means comprising: (a) dual conduit means forming means to asperate a fuel in one of said dual conduits with aspirating fluid in another of said conduits, (b) a first mixing zone in which said asperated fuel is mixed, (c) nozzle means which discharge said fuel into said boiler, (d) a dispersing means partially placed in the flow path of fluid being discharged into said boiler, and forming means to further disperse said fluid; (e) and wherein said nozzle comprises means to disperse said fuel, in a series of streams, the inner portion of each said stream of which impact said dispersing means at a uniform angle.
Claim 3
Dependent Claim 144 words
A mixing nozzle assembly for use in dispensing a combustible fuel into a combustion zone comprising means for mixing said fuel within said assembly, said mixing means comprising: (a) dual conduit means forming means to asperate a fuel in one of said dual conduits with aspirating fluid in another of said conduits, (b) a first mixing zone in which said asperated fuel is mixed, (c) nozzle means which discharge said fuel into said boiler, (d) a dispersing means partially placed in the flow path of fluid being discharged into said boiler, and forming means to further disperse said fluid. (e) a second mixing zone between said mixing zone and said nozzle; and (f) wherein said nozzle comprises means to disperse said fuel, in a series of streams, the inner portion of each said stream of which impact said dispersing means at a uniform angle.
Claim 4
Dependent Claim 144 words
A mixing nozzle assembly for use in dispensing a combustible fuel into a combustion zone comprising means for mixing said fuel within said assembly, said mixing means comprising: (a) dual conduit means forming means to asperate a fuel in one of said dual conduits with aspirating fluid in another of said conduits, (b) a first mixing zone in which said asperated fuel is mixed, (c) nozzle means which discharge said fuel into said boiler, (d) a dispersing means partially placed in the flow path of fluid being discharged into said boiler, and forming means to further disperse said fluid. (e) a second mixing zone between said mixing zone and said nozzle; and (f) wherein said nozzle comprises means to disperse said fuel, in a series of streams, the inner portion of each said stream of which impact said dispersing means at a uniform angle.
Claim 5
Dependent Claim 107 words
A process for feeding a polyphase fuel mixture into a boiler through an outlet of a nozzle assembly in a dispersed form which facilitates combustion of said mixture, said process comprising the steps of: (a) feeding a polyphase fuel mixture into said nozzle assembly, (b) utilizing a plurality of conduits and two mixing zones as a mixing means within said nozzle assembly to assure a thoroughly mixed fuel is supplied to the nozzle outlet, and (c) discharging said fuel in a plurality of streams in a swirl pattern against an outer edge of a dispersing member mounted in front of, and proximate to, said nozzle assembly outlet.
Claim 6
Dependent Claim 107 words
A process for feeding a polyphase fuel mixture into a boiler through an outlet of a nozzle assembly in a dispersed form which facilitates combustion of said mixture, said process comprising the steps of: (a) feeding a polyphase fuel mixture into said nozzle assembly, (b) utilizing a plurality of conduits and two mixing zones as a mixing means within said nozzle assembly to assure a thoroughly mixed fuel is supplied to the nozzle outlet, and (c) discharging said fuel in a plurality of streams in a swirl pattern against an outer edge of a dispersing member mounted in front of, and proximate to, said nozzle assembly outlet.
Claim 7
Dependent Claim 35 words
A process as defined in claim 3 wherein said fuel is discharged against said dispersing member in a series of streams mounted around said dispersing member and directed at a swirling angle onto said edge.
Claim 8
Dependent Claim 25 words
A process as defined in claim 4 wherein a portion of each said stream nearest the axis of said nozzle assembly impacts said dispersing member.
Claim 9
Dependent Claim 37 words
A process as defined in claims 3, 4 or 5 wherein said fuel flow rate is from about 5 to about 50 gallons per hour and said nozzle conduits are about one-half of a centimeter in diameter.
Claim 10
Dependent Claim 131 words
A mixing nozzle assembly for use in dispensing a combustible fuel into a combustion zone, said mixing nozzle comprising: (a) dual conduit means forming means to aspirate a fuel from one of said dual conduits by aspirating fluid in another of said conduit means; (b) a first mixing zone positioned at the exit of said dual conduit means; (c) a second mixing zone forming means to mix said fuel subsequent to being passed through a swirl-imparting passage between said first and second mixing zones; (d) nozzle means which discharge said fuel mix into said combustion zone and which also comprise swirl-imparting conduits therein; and (e) a dispersing means partially placed in the flow path of a fluid being discharged into a combustion zone, and forming means to further disperse said fluid.
Claim 11
Dependent Claim 131 words
A mixing nozzle assembly for use in dispensing a combustible fuel into a combustion zone, said mixing nozzle comprising: (a) dual conduit means forming means to aspirate a fuel from one of said dual conduits by aspirating fluid in another of said conduit means; (b) a first mixing zone positioned at the exit of said dual conduit means; (c) a second mixing zone forming means to mix said fuel subsequent to being passed through a swirl-imparting passage between said first and second mixing zones; (d) nozzle means which discharge said fuel mix into said combustion zone and which also comprise swirl-imparting conduits therein; and (e) a dispersing means partially placed in the flow path of a fluid being discharged into a combustion zone, and forming means to further disperse said fluid.

References Cited (Backward Citations)

US1669810A Cited
US1745329A Cited
US1826776A Cited
US2276131A Cited
US2973150A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-12-04 1988-06-04 1988-12-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-12-04 1992-06-04 1992-12-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-12-04 1996-06-04 1996-12-04 $7700.00 Window Closed / Lapsed

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