US3628735A - Burner for use with fluid fuels - Google Patents

Burner for use with fluid fuels Download PDF

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Publication number
US3628735A
US3628735A US4847A US3628735DA US3628735A US 3628735 A US3628735 A US 3628735A US 4847 A US4847 A US 4847A US 3628735D A US3628735D A US 3628735DA US 3628735 A US3628735 A US 3628735A
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US
United States
Prior art keywords
fuel
modules
external
outlet
areas
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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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US4847A
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English (en)
Inventor
Denis H Desty
David M Whitehead
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BP PLC
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BP PLC
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Publication date
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Publication of US3628735A publication Critical patent/US3628735A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion simultaneously or alternately of gaseous or liquid or pulverulent fuel

Definitions

  • Burner for flu1d fuels comprises a plurality of 31 3,793 9 juxtaposed tubular modules each of which has external outlet surfaces at one end, external closure surfaces at the other end with a waist in-between. At least some of the outlet surfaces [54] BURNER FOR USE WITH FLUID FUELS have projections. The tubular modules cooperate so that the 8 Claims, 10 Drawing Figs. waists form a fuel chamber, adjacent closure surfaces mate to form fueitight joints, and the protruding areas of the outlet [52] Cl surfaces hold apart other areas'of adjacent outlet surfaces to [51] In nosb I06 fonn fuel outlet passages. Fuel: passes into the fuel chamber [50] i 239/425 5 and thence via the fuel outlet passages to the combustion zone 424 where it burns with air which enters the combustion zone via the bores of the modules.
  • This invention relates to a burner for use with fluid fuels, i.e. a burner suitable for use with liquid and gaseous fuels.
  • a burner for fluid fuels which comprises a plurality of juxtaposed tubular modules each of which has external outlet surfaces at one end, external closure surfaces at the other end with a waist in between, the said tubular modules cooperating so that:
  • the waists form a fuel chamber
  • protruding areas of the outlet surfaces hold apart nonprotruding areas of adjacent outlet surfaces so as to form fuel outlet passages, whereby, in the use of the burner, fuel passes into the fuel chamber and thence via the fuel outlet passages, to the combustion zone where it burns with air which enters the combustion zone via the bores of the modules.
  • the external cross sections of the modules at the inlet and closure surfaces are conveniently conformable polygons e.g. regular hexagons, rectangles, equilateral triangles and particularly squares.
  • the protruding areas take the form of studs which project from nonprotruding areas.
  • the protruding areas occur where three or more tubes are in juxtaposition, e.g. at the corners of polygonal tubes.
  • the outlet surfaces In the case of a corrugated configuration the outlet surfaces have a series of protruding and nonprotruding areas. This has the effect of producing tubes between the protruding areas.
  • the burner also comprises a surround within which the modules are mounted.
  • the surround comprises a fuel channel for conveying fuel around and into the fuel chamber.
  • the bores of the modules correspond to the bores of the combustion air tubes of the burners described in U.S. Pat. No. 3,504,994 and they provide a low resistance passage for combustion air into the combustion zone. In order to achieve this low resistance it is desirable that the bore of each module has a minimum area of cross section of at least 0.01 cm.
  • the interstitial space between the modules i.e. the space formed by the cooperation of the waists, provides a low resistance to the flow of fuel across the cross section of the fuel chamber thereby encouraging an even distribution of fuel.
  • the burners according to this invention are particularly suitable for use with gaseous fuels and in such cases the fuel outlet passages should be sufficiently narrow to provide an outlet resistance which is high in comparison with the internal resistance to flow across the fuel chamber. This encourages a uniform supply of fuel gas to the combustion zone.
  • the burner will also work on vaporizable liquid fuels such as kerosene and for this application high-resistance fuel outlet passages are not necessary.
  • FIG. I is a longitudinal cross section through a single module
  • FIGS. 2-8 illustrate various arrangements for the outlet passages
  • FIG. 9 is a vertical cross section through a complete burner
  • FIG. 10 is a top view of a complete burner.
  • the module shown in FIG. I has a venturi-shaped bore 10 which conveys combustion air in the finished burner.
  • the external shape is that of a right-square prism forming closure surfaces 11 at one end and outlet surfaces 12 at the other with a waist 13 in between.
  • the outlet surfaces 12 have protruding areas 14 (which may take the form of spacer studs).
  • FIGS. 2-8 show various arrangements for the formation of the fuel outlet passages.
  • FIGS. 2-5, 7 and 8 are plan views showing nine modules because this number is sufficient to illustrate central, edge and comer positions; the bottom righthand tube is displaced to show the arrangement of the protruding areas 14.
  • the fuel outlet passages are indicated by the numeral 15.
  • the relative dimensions of the drawings are distorted to enable the various integers to be shown clearly. (Typical dimensions would be 6.3 mm. for the side of the external square and 0.25 mm. for the width of the gap).
  • FIG. 2 there is a centrally positioned spacer stud on each side of the module; the spacer studs of the central module are marked 14a in FIG. 2. These spacer studs project 0.125 mm. from the face and they engage with one another to give 0.25 mm. slits. 1
  • each module has only two spacer studs situated on adjacent sides; the spacer studs of the central module are labeled 14b. These studs project 0.25 mm. from the face and they engage with a studless face to give gaps 0.25 mm. wide.
  • each module has four spacer studs situated accntrally on each face; the studs of the central module are labeled 14c.
  • Each stud projects 025 mm. from its face and, as can be seen from FIG. 4, each stud engages with one face of an adjacent module to define gaps 0.25 mm. wide.
  • FIG. 2 requires the engagement of studs half the thickness ofthe slit. This tends to increase inaccuracies.
  • FIG. 4 uses full-sized studs and avoids the need for orientation but the use of two studs in each slit tends to obstruct the fuel exit passages more than one stud.
  • FIG. 5 shows a portion of a burner in which the outlet surfaces have a concave configuration.
  • the tubes have protruding areas 14d at each corner and the faces are concave between so as to form the fuel outlet passages 15.
  • FIGS. 6-8 show corrugated outlet surfaces.
  • FIG. 6 is a side view which shows that there are 10 protruding areas 14c per side and that these form channels connecting to the waist portion 13.
  • FIGS. 7 and 3 show the juxtaposition of corrugations to form the fuel outlet passages 15. ln FIG. 7 the corrugations occur on all sides of each module, in FIG. 8 on only two sides of each module (i.e. only half the outlet surfaces are corrugated).
  • FIG. 9 shows a longitudinal cross section through a burner which consists of a large number of modules situated inside a surround 17. This drawing shows how the waists of adjacent modules cooperate to form a fuel chamber 16 (which is continuous throughout the burner since-the vertical cross section at right angles is identical although the number of modules may be different).
  • Thesurround 17 comprises a fuel channel 18 which surrounds the fuel chamber 16 and an inlet pipe 19 to allow entry of the fuel gas.
  • the figure also shows the formation of fuel outlet channels as described in greater detail with reference to FIGS. 2, 3 and 4 and the formation of fluidtight joints 20 by the cooperation of the closure surfaces 11 of the individual modules.
  • FIG. 10 is a plan view of the top face of the burner showing how all the modules are enclosed within the surround 17.
  • a diffusion flame burner for fluid fuels which burner comprises a plurality of juxtaposed individual tubular modules each of which has a. external outlet surfaces at one end for forming fuel outlet passages at said one end with external outlet surfaces of adjacent modules, b. external closure surfaces at the other end for forming fueltight joints at said other end with external closure surfaces of adjacent modules,
  • the waists form a continuous fuel chamber around said modules between the external outlet surfaces and the external closure surfaces of said modules
  • a burner according to claim 2 in which the polygons are regular hexagons, rectangles, equilateral triangles or squares.
  • a burner according to claim 3 in which the protruding areas occur at the comers of polygonal tubes.
  • protruding areas take the form of studs which project from nonprotruding areas.
  • a burner according to claim 1 in which the outlet surfaces have a series of protruding and nonprotruding areas arranged so as to produce tubes between the protruding areas.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Spray-Type Burners (AREA)
US4847A 1969-01-23 1970-01-22 Burner for use with fluid fuels Expired - Lifetime US3628735A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB379369 1969-01-23

Publications (1)

Publication Number Publication Date
US3628735A true US3628735A (en) 1971-12-21

Family

ID=9765012

Family Applications (1)

Application Number Title Priority Date Filing Date
US4847A Expired - Lifetime US3628735A (en) 1969-01-23 1970-01-22 Burner for use with fluid fuels

Country Status (6)

Country Link
US (1) US3628735A (enrdf_load_stackoverflow)
BE (1) BE744877R (enrdf_load_stackoverflow)
DE (1) DE2002635A1 (enrdf_load_stackoverflow)
FR (1) FR2046105A6 (enrdf_load_stackoverflow)
GB (1) GB1264241A (enrdf_load_stackoverflow)
NL (1) NL166776C (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6889686B2 (en) 2001-12-05 2005-05-10 Thomas & Betts International, Inc. One shot heat exchanger burner
US7726386B2 (en) 2005-01-14 2010-06-01 Thomas & Betts International, Inc. Burner port shield
US11232874B2 (en) * 2017-12-18 2022-01-25 Ge-Hitachi Nuclear Energy Americas Llc Multiple-path flow restrictor nozzle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070905B1 (en) * 1981-02-03 1988-09-14 Matsushita Electric Industrial Co., Ltd. Ceramic burner plate and method of manufacturing the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1575653A (en) * 1925-07-27 1926-03-09 Philip J Sonner Gas burner
US1626047A (en) * 1925-12-11 1927-04-26 Majestic Mfg Company Gas stove
US2443101A (en) * 1944-11-15 1948-06-08 Ensign Ribbon Burners Inc Ribbon burner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1575653A (en) * 1925-07-27 1926-03-09 Philip J Sonner Gas burner
US1626047A (en) * 1925-12-11 1927-04-26 Majestic Mfg Company Gas stove
US2443101A (en) * 1944-11-15 1948-06-08 Ensign Ribbon Burners Inc Ribbon burner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6889686B2 (en) 2001-12-05 2005-05-10 Thomas & Betts International, Inc. One shot heat exchanger burner
US20050161036A1 (en) * 2001-12-05 2005-07-28 Thomas & Betts International, Inc. One shot heat exchanger burner
US7726386B2 (en) 2005-01-14 2010-06-01 Thomas & Betts International, Inc. Burner port shield
US11232874B2 (en) * 2017-12-18 2022-01-25 Ge-Hitachi Nuclear Energy Americas Llc Multiple-path flow restrictor nozzle

Also Published As

Publication number Publication date
NL166776B (nl) 1981-04-15
FR2046105A6 (enrdf_load_stackoverflow) 1971-03-05
DE2002635A1 (de) 1970-09-17
BE744877R (fr) 1970-07-23
GB1264241A (enrdf_load_stackoverflow) 1972-02-16
NL7000864A (enrdf_load_stackoverflow) 1970-07-27
NL166776C (nl) 1981-09-15

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