US3628737A - Fuel nozzle - Google Patents

Fuel nozzle Download PDF

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Publication number
US3628737A
US3628737A US77427A US3628737DA US3628737A US 3628737 A US3628737 A US 3628737A US 77427 A US77427 A US 77427A US 3628737D A US3628737D A US 3628737DA US 3628737 A US3628737 A US 3628737A
Authority
US
United States
Prior art keywords
body portion
nozzle
conduit
fluid
fuel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US77427A
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English (en)
Inventor
John P Norton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MILL AND MINE SERVICES Inc A CORP OF
American Air Filter Co Inc
Original Assignee
American Air Filter Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Air Filter Co Inc filed Critical American Air Filter Co Inc
Application granted granted Critical
Publication of US3628737A publication Critical patent/US3628737A/en
Assigned to MILL AND MINE SERVICES, INC., A CORP. OF PA reassignment MILL AND MINE SERVICES, INC., A CORP. OF PA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SCOVILL INC., A CT CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/07—Coanda

Definitions

  • the present invention advantageously provides a straight forward nozzle assembly useful in the burning of high and low volatile fuels.
  • the present invention further provides a nozzle assembly whereby the fuel and air atomizing from said nozzle are capable of being burned with a substantially high degree of efficiency.
  • the present invention provides a nozzle for a fuel-burning device comprising: a first body portion, a second body portion, and a third body portion wherein said second body portion is in axial alignment with and in spaced relation to said first body portion and third body portion is in axial alignment with and in spaced relation to said second body portion; a first conduit means for passage of a first fluid through said first body portion whereby said first fluid passes from said first body portion and flows in a radially outward direction; a second conduit means for passage of a second fluid through said first and second body portion whereby said second fluid passes from said second body portion and flows in a radially outward direction; said second body portion and said third body portion providing a configuration whereby said first fluid flows in a downstream direction following the contour of said configuration to join and mix with said second fluid and further follow the contour of said configuration.
  • FIG. 1 is an elevational view of a burner nozzle constructed according to one advantageous embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken in a plane passing through line 2-2 of FIG. 1;
  • FIG. 3 is a cross-sectional view taken in a plane passing through line 3-3 of FIG. 1;
  • FIG. 4 is a vertical sectional view of a burner nozzle of FIG. 1 taken along the centerline of the nozzle.
  • FIG. 5 is a vertical sectional view of a burner nozzle taken along the centerline of the nozzle of another embodiment of the present invention.
  • the burner nozzle of the present invention comprises a housing 9 which constitutes a first body portion of the nozzle, an upstream curved body 13 which constitutes a second body portion of the nozzle, and a downstream curved body 16 which constitutes a third body portion of the nozzle.
  • the housing 9 is provided with a central opening 11 (FIG. 3) for receiving the air discharge conduit 8.
  • the upstream curved body 13 is provided with a central opening 10 (FIGS. 2 and 3) for receiving the fuel discharge conduit 7.
  • the central opening 10 of the curved body 13 is axially aligned with and of smaller diameter than the opening 11 of the housing 9 to accommodate the fuel conduit 7 which also passes through body 9 and is in spaced relation to the air conduit 8.
  • FIG. 1 further discloses annular slit 22 formed by the spacing between the lower surface 24 of the housing 9 and the upper surface 25 of thecurved body 13.
  • Curved body 13 is further provided with an upstream lip 23 and an outer surface 18.
  • the lip 23 is constructed so that a step is formed between the curved body and the slit 22.
  • the configuration of the lip 23 and the outer surface 18 is such that air exiting from the slit 22 will cling to or near the lip 23 and the outer surface 18 instead of pursuing a course in a radially outward direction from the slit 22.
  • the outer surface of lip 23 extends substantially parallel to the longitudinally extending axis of the nozzle.
  • the outer surface 18 communicates with the downstream portion of the outer surface of the lip 23 and extends outwardly in a downstream direction.
  • a downstream curved body is provided with a plenum 14 which is centrally disposed within body 16 and in axially aligned relation with the opening 10.
  • Plenum 14 is of a diameter greater than the diameter of opening 10.
  • the curved body 16 is further provided with an upper surface 25, an outer surface 19 and a terminal edge 17.
  • Outer surface 19 is in alignment with outer surface 18, the surface 19 extending outwardly then inwardly in a downstream direction so the fluid passing downstream along and clinging near the outer surface 18 will continue in a downstream flow clinging near the outer surface 19.
  • Annular slit 15 formed by the spacing between the lower surface 26 of the curved body 13 and the upper surface 27 of the curved body 16 is provided to allow a radially outward flow of fuel from opening 10.
  • FIG. 1 and 4 further illustrate a fuel inlet conduit 2 having an opening 3 provided therein and an air inlet conduit 4 having an opening 5 provided therein.
  • Conduit 2 is in communicative relation with a fuel supply (not shown) and conduit 7.
  • Conduit 4 is in communicative relation with an air supply (not shown) and conduit 8.
  • Conduit 7 is provided with a closure wall 20 and conduitfl is provided with a closure wall 21.
  • a bolt having a bolthead 6 is centrally disposed within the housing 9, the upstream curved body 13 and the downstream curved body 16.
  • the bolt is disposed within and it spaced relation to the fuel discharge conduit 7.
  • the threaded end of bolt 12 is received by the downstream curved body 16.
  • fuel discharge conduit 7 is received by the downstream curved body 16.
  • Conduit 7 is further provided with apertures 28 in the walls in axially aligned relation with the annular slit 15.
  • the heating element 30 is disposed in alignment with the longitudinal extending axis of the nozzle so that uniform heat is distributed along the outer surface 19 and the terminal edge 17 so that uniform heat is distributed along the surfaces which come in contact with the air-fuel mixture.
  • air is introduced at a high velocity, generally at about sonic velocity, into the nozzle by way of air inlet conduit 4.
  • the air passes through the opening 11 and then spreads in an outwardly radial direction upon hitting the upper surface 25.
  • Annular slit 22 is provided to direct the flow of the air in the outwardly radial direction. Opening of annular slit 22 is small so the air passing through the slit is maintained at a high velocity.
  • the high-velocity air exits from slit 22 it passes over the lip 23, following the contour of the lip, in lieu of continuing in a radially outward direction. The reason for this change in direction is unknown but is believed to be due to the physical phenomena known as the Coanda effect.
  • Fuel including gaseous and liquid types, is introduced at a low velocity into the nozzle by way of fuel inlet conduit 2.
  • the fuel passes through the opening into plenum 14.
  • the low-velocity fuel exits from the plenum 14 in a radially outward direction through annular slit 15.
  • the low-velocity fuel is pulled into the high-velocity airstream which is flowing'past the annular slit 15.
  • the fuel is subsequently mixed with the air and travels as a mixture around the outer periphery of the downstream curved body 16 along the surface 19.
  • a heating element 30 is provided to illustrate that in use of liquid fuels, it is sometimes necessary to vaporize the liquid as it is mixed with the air. If this is not done, droplets of the fuel may be entrained in the fuel-air mixture thereby yielding a heterogeneous mixture with the result being incomplete combustion,
  • a nozzle for a fuel-buming device comprising: a first body portion, a second body portion, and a third body portion wherein said second body portion is in axial alignment with and in spaced relation to said first body portion and said third body portion is in axial alignment with and in spaced relation to said second body portion; a first conduit means for passage of a first fluid through said first body portion whereby said first fluid passes from said first body portion and flows in a radially outward direction; a second conduit means for passage of a second fluid through said first and second body portion whereby said second fluid passes from said second body portion and flows in a radially outward direction; said second body portion and said third body portion providing a configuration whereby said first fluid flows in a downstream direction following the contour of said configuration to join and mix with said second fluid and further follow the contour of said configuration.
  • the nozzle of claim 1 including means for adding heat to said third body portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
US77427A 1970-10-02 1970-10-02 Fuel nozzle Expired - Lifetime US3628737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7742770A 1970-10-02 1970-10-02

Publications (1)

Publication Number Publication Date
US3628737A true US3628737A (en) 1971-12-21

Family

ID=22137976

Family Applications (1)

Application Number Title Priority Date Filing Date
US77427A Expired - Lifetime US3628737A (en) 1970-10-02 1970-10-02 Fuel nozzle

Country Status (4)

Country Link
US (1) US3628737A (fr)
CA (1) CA932644A (fr)
CH (1) CH535918A (fr)
DE (1) DE2149859A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833337A (en) * 1971-04-29 1974-09-03 British Petroleum Co Flarestacks
US3910501A (en) * 1974-11-11 1975-10-07 Murray Gene Tyrone Atomizer
US3915384A (en) * 1975-03-13 1975-10-28 Richard E Diggs Combination irrigation and temperature control system for plants
USB586215I5 (fr) * 1975-06-12 1976-01-20
US3984054A (en) * 1974-08-26 1976-10-05 Barry Wright Corporation Nozzle
WO1990005000A1 (fr) * 1988-10-31 1990-05-17 Dale Gordon Jones Procede et dispositifs pour nettoyer des gaz
US5252298A (en) * 1991-04-23 1993-10-12 Noell, Inc. Device for cleaning gases
US20070164130A1 (en) * 2005-10-13 2007-07-19 Cool Clean Technologies, Inc. Nozzle device and method for forming cryogenic composite fluid spray
US10661287B2 (en) 2017-04-04 2020-05-26 David P. Jackson Passive electrostatic CO2 composite spray applicator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367581A (en) * 1965-10-23 1968-02-06 Honeywell Inc Control apparatus utilizing a fluid amplifier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367581A (en) * 1965-10-23 1968-02-06 Honeywell Inc Control apparatus utilizing a fluid amplifier

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833337A (en) * 1971-04-29 1974-09-03 British Petroleum Co Flarestacks
US3984054A (en) * 1974-08-26 1976-10-05 Barry Wright Corporation Nozzle
US3910501A (en) * 1974-11-11 1975-10-07 Murray Gene Tyrone Atomizer
US3915384A (en) * 1975-03-13 1975-10-28 Richard E Diggs Combination irrigation and temperature control system for plants
USB586215I5 (fr) * 1975-06-12 1976-01-20
US3985302A (en) * 1975-06-12 1976-10-12 Barry Wright Corporation Variable two stage air nozzle
WO1990005000A1 (fr) * 1988-10-31 1990-05-17 Dale Gordon Jones Procede et dispositifs pour nettoyer des gaz
US5252298A (en) * 1991-04-23 1993-10-12 Noell, Inc. Device for cleaning gases
US20070164130A1 (en) * 2005-10-13 2007-07-19 Cool Clean Technologies, Inc. Nozzle device and method for forming cryogenic composite fluid spray
US7389941B2 (en) * 2005-10-13 2008-06-24 Cool Clean Technologies, Inc. Nozzle device and method for forming cryogenic composite fluid spray
US10661287B2 (en) 2017-04-04 2020-05-26 David P. Jackson Passive electrostatic CO2 composite spray applicator

Also Published As

Publication number Publication date
DE2149859A1 (de) 1972-12-21
CH535918A (fr) 1973-04-15
CA932644A (en) 1973-08-28

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Legal Events

Date Code Title Description
AS Assignment

Owner name: MILL AND MINE SERVICES, INC., ROUTE 19 AT FIELDVIE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SCOVILL INC., A CT CORP.;REEL/FRAME:004029/0437

Effective date: 19820707