US3544255A - Gas burners - Google Patents

Gas burners Download PDF

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Publication number
US3544255A
US3544255A US758344A US3544255DA US3544255A US 3544255 A US3544255 A US 3544255A US 758344 A US758344 A US 758344A US 3544255D A US3544255D A US 3544255DA US 3544255 A US3544255 A US 3544255A
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US
United States
Prior art keywords
nozzle
burner
gas
flame
stabiliser
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
US758344A
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English (en)
Inventor
Francis George Roper
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.)
Gas Council
Original Assignee
Gas Council
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 Gas Council filed Critical Gas Council
Application granted granted Critical
Publication of US3544255A publication Critical patent/US3544255A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D215/48—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
    • C07D215/54—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 3
    • C07D215/56—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 3 with oxygen atoms in position 4
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/70—Baffles or like flow-disturbing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2209/00—Safety arrangements
    • F23D2209/20—Flame lift-off / stability

Definitions

  • GAS BURNERS Filed Sept. 9, 1968 v 2 Sheets-Sheet 2 /8 lnvenlor F.
  • a gas burner of the neat gas type which is intended for burning natural gas or other gas containing a predominant proportion of methane or other hydrocarbon gas, comprises a nozzle and a bluff body stabiliser which is fixed to the nozzle and extends into the stream of gas which, in use, issues from the nozzle.
  • the blufi body stabiliser is fixed to the burner in a position which is so close to the nozzle orifice that, with gas issuing from the nozzle at a discharge pressure which would be suflicient to cause the flame to lift away from the nozzle in the absence of the stabiliser, the gas impinges on the stabiliser while its flow is still streamlined.
  • the part of the surface of the stabiliser closest to the nozzle is adjusted in position, within the limits set by the requirement that the gas impinges on the stabiliser while its flow is still streamlined, so that the noise produced by the burner when in operation is minimised.
  • This invention relates to gas burners, which are primarily intended for domestic purposes, of the neat gas, or nonaerated jet, type in which the gas to be burned emerges from a nozzle without any premixture with air.
  • the advantages of this type of burner are well known and amongst the main ones is that they avoid the need for internal air passages which can collect dust and also form a source of flame noise.
  • the aim of this invention is to provide a neat gas burner which overcomes these difiiculties and achieves aeration of the flame without undue noise.
  • such a gas burner comprises a nozzle and a bluff body stabiliser which is fixed in a position such that, in use, with gas issuing from the nozzle at a discharge pressure which would be sufficient to cause the flame to lift away from the nozzle in the absence of the stabiliser, the gas impinges on the stabiliser whilst its flow is still streamlined, the surface of the stabiliser closest to the nozzle being spaced from the nozzle orifice by a distance which is set to minimise the noise produced by the burner when in operation.
  • the distance of the closest part of its surface from the nozzle orifice is preferably from 1 to 3 mm.
  • the preferred distance of the stabiliser from the orifice is increased to from 4 to 6.5 mm.
  • the blufl" body stabiliser may be of various shapes, but a rod of circular cross section is simple and produces satisfactory results.
  • the rod is circular, its diameter is not critical but between 3 mm. and 5 mm. has been found satisfactory with a burner having a nozzle diameter of 0.5 mm. or with a nozzle of the well-known slotted port type giving a fan-shaped flame, for example a Bray 118 size T jet.
  • the stabiliser may be made of ceramic material or quartz, but any smooth heat-resistant material is satisfactory.
  • a nozzle of the slotted port type for example a Bray 118 size T jet
  • a shield is provided extending around the ends of the flattened stream of gas issuing from the burner nozzle, between the nozzle and the stabiliser.
  • the shield may be in the form of an elongated trough with the centre portions of its side walls, adjacent the ends of the stabiliser cut way.
  • the trough extends in the direction in which the flame is elongated and air is drawn into the flame through the cutaway sides of the trough where the flame extends around the stabiliser thus reducing spluttering on light-up.
  • the trough has its end walls inclined to the axis of the nozzle, that is to the vertical when the burner is set with the nozzle discharging directly upwards as is usual.
  • the angle of inclination of the ends of the trough is preferably substantially 20 to the axis of the nozzle.
  • the base of the trough is preferably at substantially the same height as, or slightly above, the nozzle orifice and outwardly projecting flanges are preferably provided at the edges of the end walls.
  • the gas flowing from the burner nozzle flows upwards over the end walls of the trough and outwards to some extent over the flanges which assist in anchoring the flame and preventing lift at its edges.
  • FIG. 1 is a side view partly in section of one example
  • FIG. 2 is a similar view of the second example.
  • FIG. 3 is a plan of the example shown in FIG. 2.
  • the burner comprises a body 1 having a screw-threaded tubular shank 2 for screwing into a tapped hole in the gas supply pipe and a head 3 with a central gas outlet nozzle having an orifice 0.65 mm. in diameter.
  • a collar 4 which is shown in section, fits around the head 3 and rests on the body 1.
  • the rod 6, which forms a buff body stabiliser is made of stainless steel, quartz, or ceramic material.
  • the lowermost part of the apex of the rod 6 is spaced between 1 and 2 mm. above the orifice of the nozzle in the head 3.
  • a second rod 6a of similar material is fixed at right angles to the rod 6 by strips 5a.
  • the centre of the rod 6a, which is straight is fixed in a position at which the centre of a flame produced by the burner would stabilise in the absence of the rod 6a.
  • the burner again has a body 1 with a shank 2, but a head 8 has a nozzle 9 of the slotted port type formed in it.
  • the nozzle 9 has a slot-like orifice producing a fan-shaped flame parallel to the plane of the drawing and in this example the burner nozzle is a Bray 118 size T jet. 7
  • a collar 10 fits around the head 8 and rests on the body 1.
  • the collar 10 has a shield 11 formed integrally with it.
  • the shield 11 has an elongated trough shape with a bottom 12, side walls 13 and end walls 14.
  • the end walls 14 are inclined to the vertical, that is to the axis of the nozzle orifice 9 at an" angle of 20. This angle of inclination is not absolutely critical, but some inclination of about this magnitude greatly improves the performance of the burner.
  • Horizontal flanges 15 project outwards from the edges of the end walls 14.
  • a blufi body in the form of a stainless steel rod or tube 17 of low thermal mass extends centrally across the shield 11 intersecting the axis of the nozzle orifice 9 at right angles.
  • the rod 17 is held in position by support bars 18 fixed to the side walls 13 and in this example has the lowermost part ofits periphery spaced 5.5 mm. above the nozzle orifice 9.
  • the nozzle orifice 9 itself is spaced slightly below the upper surface of the bottom 12 and the lowermost part of the rod 17 is spaced 4.3 mm. above the upper surface of the bottom 12.
  • a great advantage of the example of the burner illustrated in FIGS. 2 and 3 of the drawings is that a standard slotted port burner can be converted into the burner shown by the addition of the shield 11 with the bluff body stabiliser rod 17 fixed to it as a separate assembly and for fitting all thatis necessary to push thecollar 10 over the burner head 8 and to set the longitudinal axis of the shield 11 parallel to the plane of the fan-shaped flame produced by the burner.
  • a gas burner of the neat gas-type comprising a nozzle of the slotted port type including means defining a nozzle orifice, a bluff body stabilizer in the form of a circular rod, means fixing said bluff body stabilizer to said nozzle adjacent said orifice in a positionin which it extends centrally across said burner atright angles to the plane of the flame producedby said slotted port nozzle so that thesurface of saidbluif-body stabilizer closest to the nozzle is spaced a distance of from 4 to 6.5 mm.
  • said shield is in the form of an elongated trough including a bottom wall and side walls and-end walls extending from said bottom, centre portions of said side walls, adjacent the ends of said blufl body stabilizer being cut away and said trough extending in the direction of said plane of said flame.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
US758344A 1967-09-29 1968-09-09 Gas burners Expired - Lifetime US3544255A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4451767 1967-09-29

Publications (1)

Publication Number Publication Date
US3544255A true US3544255A (en) 1970-12-01

Family

ID=10433666

Family Applications (1)

Application Number Title Priority Date Filing Date
US758344A Expired - Lifetime US3544255A (en) 1967-09-29 1968-09-09 Gas burners

Country Status (6)

Country Link
US (1) US3544255A (xx)
BE (1) BE721511A (xx)
DE (1) DE1779746B1 (xx)
FR (1) FR1580006A (xx)
GB (1) GB1232596A (xx)
NL (1) NL6813759A (xx)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4616994A (en) * 1984-10-05 1986-10-14 Heil-Quaker Corporation Gas burner with means for reducing NOx emissions
US4629415A (en) * 1983-07-11 1986-12-16 Gas Research Institute Flame insert
US4652236A (en) * 1985-03-16 1987-03-24 Hans Viessmann Atmospheric gas burner assembly
US4781578A (en) * 1984-01-24 1988-11-01 John Zink Company Pilot burner apparatus
US5236327A (en) * 1990-11-16 1993-08-17 American Gas Association Low NOx burner
US5667374A (en) * 1992-10-16 1997-09-16 Process Combustion Corporation Premix single stage low NOx burner
US7011515B1 (en) * 2004-10-18 2006-03-14 Huang-Hsi Hsu Gas lighter having device for preventing flame from being extinguished by wind

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2086817A5 (xx) * 1970-04-09 1971-12-31 Applic Gaz Sa
DE3689565D1 (de) * 1985-10-05 1994-03-03 Vaillant Joh Gmbh & Co Atmosphärischer gasbrenner.
FR2628826B1 (fr) * 1988-03-21 1992-04-24 Chaffoteaux Et Maury Perfectionnements aux bruleurs a gaz

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1144047B (de) * 1959-08-03 1963-02-21 Mannesmann Ag Beregnungsanlage
US3238994A (en) * 1962-10-09 1966-03-08 Sinclair Research Inc Liquid fuel burner with combustion aid

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1144047B (de) * 1959-08-03 1963-02-21 Mannesmann Ag Beregnungsanlage
US3238994A (en) * 1962-10-09 1966-03-08 Sinclair Research Inc Liquid fuel burner with combustion aid

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629415A (en) * 1983-07-11 1986-12-16 Gas Research Institute Flame insert
US4781578A (en) * 1984-01-24 1988-11-01 John Zink Company Pilot burner apparatus
US4616994A (en) * 1984-10-05 1986-10-14 Heil-Quaker Corporation Gas burner with means for reducing NOx emissions
US4652236A (en) * 1985-03-16 1987-03-24 Hans Viessmann Atmospheric gas burner assembly
US5236327A (en) * 1990-11-16 1993-08-17 American Gas Association Low NOx burner
US5460513A (en) * 1990-11-16 1995-10-24 American Gas Association Low NOx burner
US5667374A (en) * 1992-10-16 1997-09-16 Process Combustion Corporation Premix single stage low NOx burner
US7011515B1 (en) * 2004-10-18 2006-03-14 Huang-Hsi Hsu Gas lighter having device for preventing flame from being extinguished by wind

Also Published As

Publication number Publication date
FR1580006A (xx) 1969-08-29
GB1232596A (xx) 1971-05-19
BE721511A (xx) 1969-03-27
NL6813759A (xx) 1969-04-01
DE1779746B1 (de) 1971-11-04

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