US2588485A - Liquid fuel burner nozzle - Google Patents

Liquid fuel burner nozzle Download PDF

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Publication number
US2588485A
US2588485A US147952A US14795250A US2588485A US 2588485 A US2588485 A US 2588485A US 147952 A US147952 A US 147952A US 14795250 A US14795250 A US 14795250A US 2588485 A US2588485 A US 2588485A
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United States
Prior art keywords
liquid fuel
chamber
swirl
fuel burner
burner nozzle
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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
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US147952A
Inventor
Clarke John Stanley
Goddard Leslie John
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ZF International UK Ltd
Original Assignee
Joseph Lucas Ltd
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Publication date
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Publication of US2588485A publication Critical patent/US2588485A/en
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    • 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
    • F23D11/24—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space

Definitions

  • LIQUID FUEL BURNER NOZZLE Filed March 6, 1950 e] C fa/Pif@ Patented Mar. 11, 1952 LIQUID FUEL BURNER NOZZLE .
  • This invention has for its object to provide improved liquid fuel burner nozzles of the swirlchamber type and having in association with the swirl-chamber flow control means responsive to the fuel pressure.
  • a hollow body part a is provided at one end with a conical swirlchamber l) having the discharge orifice at its smaller end.
  • the larger end communicates with an annular fuel supply duct c by' way of tangentially disposed passages
  • a cylindrical chamber e containing a piston f loaded by a spring y, and from the side of the piston remote from the spring, there extends (through a 1core the body part) a control member h, the outside diameter of which is substantially equal to the diameter of the larger end of the swirl-chamber.
  • Fuel can enter the end ofy the said chamber e remote from the spring through a passage and the pressure exerted on the piston in opposition to the spring serves to move the control member in the direction for varying the effective cross-sectional area of the discharge ends of the tangential passages d.
  • an axial bore through which extends a hollow cylindrical stem 7' terminating in a conical portion 1c which is situated within the above mentioned swirl-chamber b.
  • the conical portion of the stem is shaped to form within it a subsidiary conical swirl-chamber having a discharge orifice at its smaller end, and within the stem is located a swirl plug m formed with peripheral and helical grooves n, for admitting fuel to the associated swirl chamber from a passage o communicating with the supply duct c, the plug m being held in position by a spring p.
  • the arrangement is such that variation of the pressure of the fuel admitted at q to the duct c is accompanied by variation of the rate of flow to the main swirl-chamber b, and under a conn liquid fuel through the nozzle in response to variations of fuel pressure can be effected in a simple and convenient manner.
  • a liquid fuel nozzle comprising in combination a hollow body provided with an inlet for liquid fuel under pressure, and with a main swirl-chamber through which liquid fuel can be discharged from said hollow body, a hollow cylindrical member immovably secured within said, hollow body and terminating at one end in a subsidiary swirl-chamber provided with a discharge orifice, said hollow cylindrical member being in communication with said inlet, and said subsidiary swirl chamber being situated within said main swirl chamber, a movable control member surrounding said hollow cylindrical member and having one end arranged to control fuel flow from the interior of said hollow body to said main swirl chamber, and means for moving said control member in response to the pressure of the liquid fuel supplied to the said hollow body.

Description

March 11, 1952 J, s, CLARKE Er AL 2,588,485
LIQUID FUEL BURNER NOZZLE Filed March 6, 1950 e] C fa/Pif@ Patented Mar. 11, 1952 LIQUID FUEL BURNER NOZZLE .lohn Stanley Clarke, Blaeko, near Nelson, and Leslie John Goddard, Bromborough, England, assignors to Joseph Lucas Limited, Birmingham, England Application March 6, 1950, Serial No. 147,952 In Great Britain March 7, 1949 2 Claims.
This invention has for its object to provide improved liquid fuel burner nozzles of the swirlchamber type and having in association with the swirl-chamber flow control means responsive to the fuel pressure.
The accompanying drawing is a sectional side elevation illustrating one embodiment of the invention.
Referring to the drawing, a hollow body part a is provided at one end with a conical swirlchamber l) having the discharge orifice at its smaller end. The larger end communicates with an annular fuel supply duct c by' way of tangentially disposed passages Within the body part is formed a cylindrical chamber e containing a piston f loaded by a spring y, and from the side of the piston remote from the spring, there extends (through a 1core the body part) a control member h, the outside diameter of which is substantially equal to the diameter of the larger end of the swirl-chamber. Fuel can enter the end ofy the said chamber e remote from the spring through a passage and the pressure exerted on the piston in opposition to the spring serves to move the control member in the direction for varying the effective cross-sectional area of the discharge ends of the tangential passages d. i
In the piston and control member is formed an axial bore through which extends a hollow cylindrical stem 7' terminating in a conical portion 1c which is situated within the above mentioned swirl-chamber b. The conical portion of the stem is shaped to form within it a subsidiary conical swirl-chamber having a discharge orifice at its smaller end, and within the stem is located a swirl plug m formed with peripheral and helical grooves n, for admitting fuel to the associated swirl chamber from a passage o communicating with the supply duct c, the plug m being held in position by a spring p.
The arrangement is such that variation of the pressure of the fuel admitted at q to the duct c is accompanied by variation of the rate of flow to the main swirl-chamber b, and under a conn liquid fuel through the nozzle in response to variations of fuel pressure can be effected in a simple and convenient manner.
Having thus described our invention what we claim as new and desire to secure by Letters Patent is:
1. A liquid fuel nozzle comprising in combination a hollow body provided with an inlet for liquid fuel under pressure, and with a main swirl-chamber through which liquid fuel can be discharged from said hollow body, a hollow cylindrical member immovably secured within said, hollow body and terminating at one end in a subsidiary swirl-chamber provided with a discharge orifice, said hollow cylindrical member being in communication with said inlet, and said subsidiary swirl chamber being situated within said main swirl chamber, a movable control member surrounding said hollow cylindrical member and having one end arranged to control fuel flow from the interior of said hollow body to said main swirl chamber, and means for moving said control member in response to the pressure of the liquid fuel supplied to the said hollow body.
2. A liquid fuel nozzle as claimed in claim 1 and having within the subsidiary swirl-chamber a swirl plug formed with helical peripheral grooves.
JOHN STANLEY CLARKE. LESLIE JOHN GODDARD.
REFERENCES CTED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,607,805 Sprado Nov. 23,1926 2,436,815 Lum Mar. 2, 1948
US147952A 1949-03-07 1950-03-06 Liquid fuel burner nozzle Expired - Lifetime US2588485A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2588485X 1949-03-07

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US2588485A true US2588485A (en) 1952-03-11

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785570A (en) * 1972-08-30 1974-01-15 Us Army Dual orifice fuel nozzle with air-assisted primary at low flow rates
US3838821A (en) * 1972-07-20 1974-10-01 Cav Ltd Fuel injection nozzle units
US4987887A (en) * 1990-03-28 1991-01-29 Stanadyne Automotive Corp. Fuel injector method and apparatus
US5020500A (en) * 1990-03-28 1991-06-04 Stanadyne Automotive Corp. Hole type fuel injector and injection method
US20060042254A1 (en) * 2004-09-02 2006-03-02 Shouhei Yoshida Combustor, gas turbine combustor, and air supply method for same
US20100067908A1 (en) * 2005-09-29 2010-03-18 Broadlight, Ltd. Enhanced Passive Optical Network (PON) Processor
US20120012099A1 (en) * 2010-06-07 2012-01-19 David Deng Heating system
US8985094B2 (en) 2011-04-08 2015-03-24 David Deng Heating system
US9222670B2 (en) 2010-12-09 2015-12-29 David Deng Heating system with pressure regulator
US9423123B2 (en) 2013-03-02 2016-08-23 David Deng Safety pressure switch
US9739389B2 (en) 2011-04-08 2017-08-22 David Deng Heating system
US9752779B2 (en) 2013-03-02 2017-09-05 David Deng Heating assembly
US9752782B2 (en) 2011-10-20 2017-09-05 David Deng Dual fuel heater with selector valve
US10073071B2 (en) 2010-06-07 2018-09-11 David Deng Heating system
US10222057B2 (en) 2011-04-08 2019-03-05 David Deng Dual fuel heater with selector valve
US10240789B2 (en) 2014-05-16 2019-03-26 David Deng Dual fuel heating assembly with reset switch
US10429074B2 (en) 2014-05-16 2019-10-01 David Deng Dual fuel heating assembly with selector switch

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1607805A (en) * 1926-11-23 op milwaukee
US2436815A (en) * 1944-03-15 1948-03-02 Gen Electric Pressure operated valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1607805A (en) * 1926-11-23 op milwaukee
US2436815A (en) * 1944-03-15 1948-03-02 Gen Electric Pressure operated valve

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838821A (en) * 1972-07-20 1974-10-01 Cav Ltd Fuel injection nozzle units
US3785570A (en) * 1972-08-30 1974-01-15 Us Army Dual orifice fuel nozzle with air-assisted primary at low flow rates
US4987887A (en) * 1990-03-28 1991-01-29 Stanadyne Automotive Corp. Fuel injector method and apparatus
US5020500A (en) * 1990-03-28 1991-06-04 Stanadyne Automotive Corp. Hole type fuel injector and injection method
USRE34999E (en) * 1990-03-28 1995-07-25 Stanadyne Automotive Corp. Hole type fuel injector and injection method
USRE35101E (en) * 1990-03-28 1995-11-28 Stanadyne Automotive Corp. Fuel injector method and apparatus
US20060042254A1 (en) * 2004-09-02 2006-03-02 Shouhei Yoshida Combustor, gas turbine combustor, and air supply method for same
US20110011092A1 (en) * 2004-09-02 2011-01-20 Shouhei Yoshida Combustor, gas turbine combustor, and air supply method for same
US7891191B2 (en) * 2004-09-02 2011-02-22 Hitachi, Ltd. Combustor, gas turbine combustor, and air supply method for same
US8047003B2 (en) 2004-09-02 2011-11-01 Hitachi, Ltd. Combustor, gas turbine combustor, and air supply method for same
US20100067908A1 (en) * 2005-09-29 2010-03-18 Broadlight, Ltd. Enhanced Passive Optical Network (PON) Processor
US8752541B2 (en) 2010-06-07 2014-06-17 David Deng Heating system
US20120012099A1 (en) * 2010-06-07 2012-01-19 David Deng Heating system
US8851065B2 (en) * 2010-06-07 2014-10-07 David Deng Dual fuel heating system with pressure sensitive nozzle
US9021859B2 (en) 2010-06-07 2015-05-05 David Deng Heating system
US10073071B2 (en) 2010-06-07 2018-09-11 David Deng Heating system
US9222670B2 (en) 2010-12-09 2015-12-29 David Deng Heating system with pressure regulator
US8985094B2 (en) 2011-04-08 2015-03-24 David Deng Heating system
US10222057B2 (en) 2011-04-08 2019-03-05 David Deng Dual fuel heater with selector valve
US9739389B2 (en) 2011-04-08 2017-08-22 David Deng Heating system
US9752782B2 (en) 2011-10-20 2017-09-05 David Deng Dual fuel heater with selector valve
US9752779B2 (en) 2013-03-02 2017-09-05 David Deng Heating assembly
US9518732B2 (en) 2013-03-02 2016-12-13 David Deng Heating assembly
US9423123B2 (en) 2013-03-02 2016-08-23 David Deng Safety pressure switch
US10240789B2 (en) 2014-05-16 2019-03-26 David Deng Dual fuel heating assembly with reset switch
US10429074B2 (en) 2014-05-16 2019-10-01 David Deng Dual fuel heating assembly with selector switch

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