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Publication numberUS2588485 A
Publication typeGrant
Publication dateMar 11, 1952
Filing dateMar 6, 1950
Priority dateMar 7, 1949
Publication numberUS 2588485 A, US 2588485A, US-A-2588485, US2588485 A, US2588485A
InventorsGoddard Leslie John, Clarke John Stanley
Original AssigneeLucas Ltd Joseph
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Liquid fuel burner nozzle
US 2588485 A
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Description  (OCR text may contain errors)

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

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1607805 *Jun 12, 1920Nov 23, 1926 op milwaukee
US2436815 *Mar 15, 1944Mar 2, 1948Gen ElectricPressure operated valve
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3785570 *Aug 30, 1972Jan 15, 1974Us ArmyDual orifice fuel nozzle with air-assisted primary at low flow rates
US3838821 *Jul 20, 1973Oct 1, 1974Cav LtdFuel injection nozzle units
US4987887 *Aug 3, 1990Jan 29, 1991Stanadyne Automotive Corp.Fuel injector method and apparatus
US5020500 *Mar 28, 1990Jun 4, 1991Stanadyne Automotive Corp.Hole type fuel injector and injection method
US7891191 *Aug 24, 2005Feb 22, 2011Hitachi, Ltd.Combustor, gas turbine combustor, and air supply method for same
US8047003Sep 28, 2010Nov 1, 2011Hitachi, Ltd.Combustor, gas turbine combustor, and air supply method for same
US8752541Jun 7, 2011Jun 17, 2014David DengHeating system
US20120012099 *Jun 7, 2011Jan 19, 2012David DengHeating system
USRE34999 *Jun 2, 1993Jul 25, 1995Stanadyne Automotive Corp.Hole type fuel injector and injection method
USRE35101 *Jan 29, 1993Nov 28, 1995Stanadyne Automotive Corp.Fuel injector method and apparatus
Classifications
U.S. Classification239/464, 239/488
International ClassificationF23D11/24
Cooperative ClassificationF23D11/24
European ClassificationF23D11/24