US3820945A - Auto stabilised gas burner - Google Patents

Auto stabilised gas burner Download PDF

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Publication number
US3820945A
US3820945A US00308809A US30880972A US3820945A US 3820945 A US3820945 A US 3820945A US 00308809 A US00308809 A US 00308809A US 30880972 A US30880972 A US 30880972A US 3820945 A US3820945 A US 3820945A
Authority
US
United States
Prior art keywords
burner
side wall
burner head
rim
deflector
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
US00308809A
Other languages
English (en)
Inventor
R Vignes
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.)
Engie SA
Original Assignee
Gaz de France SA
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 Gaz de France SA filed Critical Gaz de France SA
Application granted granted Critical
Publication of US3820945A publication Critical patent/US3820945A/en
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
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
    • 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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner

Definitions

  • the deflector is situated at a certain spacing above the waisting so that under low operating conditions when the flame has been retracted into the waisting the flame is spaced from the deflector and this results in appreciable heat losses.
  • the distribution chamber is located below the burner head and consequently, the said distribution chamber and the burner head cannot be produced in a single piece.
  • an auto-stabilised burner including a distribution chamber for air-fuel mixture a burner head comprising: a series of substantially vertical narrow slots; aperture means in said slots defining waisting formed in the outer face of the burner head; a deflector which overlies at least a part of said aperture of each slot and a base which defines the lower end of the slots and has a rim which projects slightly outwards beyond the bases of the slots, the. improvement wherein the distribution chamber is. located in the burner headand that the upper end of the burner head is cut away to leave a channel which, together with the lower face of said deflector, forms the waisting of the burner head.
  • the burner. of this invention when used under low operating conditions the flame remains in the immediate vicinity of the deflector, that is to say of the products to be heated, so that the heat from the said flame, is used with maximum yield. Furthermore, the deflector is now used to form a part of the waisting of the burner head, so that the said waisting can be machined more easily.
  • the deflector preferably overhangs considerably beyond the waisting of the burner head and overlies at least a part of the zone of the said burner head which is situated outside the waisting.
  • the deflector advantageously has a recess or shoulder of suitable shape machined in its lower face, into which the upper end of the burner head can be fitted with a very small amount of play. This latter characteristic makes it possible to simplify the construction of the deflector and to mount it on the burner head.
  • the cross-section of the wall of the burner head is advantageous to make the cross-section of the wall of the burner head of substantially trapezoidal shape when viewed in a plane perpendicular to the deflector, the long base of the trapezoid facing the bottom.
  • the vertical slots which are formed in the wallof the burner head give a gradually decreasing pressure dropas a function of the height.
  • FIG. 1 is a horizontal cross-section taken along the line I-I of FIG. 2, and shows a burner according to the invention; and I FIG. 2 is a transverse cross-section taken along the line lI-II of FIG. 1.
  • the burner illustrated in FIGS. 1 and 2 includes a burner head 1, in the present case of annular shape, which has its lower part in the shape of a cylindrical base 2 resting on the surface of a'cooker 3.
  • the upper face of the burner head 1 is provided with a series of narrow radially extending vertical slots 4 distributed around the periphery of the burner head 1.
  • each of the slots 4 has, at its upper end, a preferential flow zone 4a in which the pressure drop is very small relative to the adjacent z'ones.
  • This preferential flow zone 4a is produced for each slot by means of waisting in the burner head, in the form of an annular space 5, machined in the burner head 1 from the outer face of the latter.
  • the upper part of the base 2 defines the lower extremities of the slots 4 and has an annular rim 6 which projects slightly radially outwardly beyond the bases of the slots 4.
  • the burner also contains a deflector plate 7 which overhangs the upper part of the aper ture of the slots 4 and is mounteddirectly on the burner head 1.
  • the central part of the base 2 has an axial cylindrical bore 8 passing through it, which defines a recess to receive a vertical rigid guide sleeve 9 attached to the surface of the cooker 3.
  • the sleeve 9 fits in the recess with a very small amount of play and forms one end of a supply pipeline 9a, which extends beyond the surface of I the cooker 3 and has its other end connected to a mixer (not shown) for the combustible gas and air.
  • the burner head 1 together with the deflector plate 7 defines a distribution chamber 10 into which the supply pipeline opens directly to supply the fuel mixture.
  • the annular waisting 5 of the burner head 1 is defined, on the one hand, by an annular peripheral zone 7a of the lower face of the deflector 7, and on the other hand, by an annular recess consisting of a shaped cut-away portion 11 machined from the outer peripheral face of each slot 4 defining the otherwise truncated cone shape 1a of the burner head 1.
  • the annular recess 11 is defined on the periphery la by a horizontal cut 11a and a vertical cut 11b.
  • the deflector 7 overhangs the annular waisting 5, and also overlies the upper face of the burner head 1 at least to a considerable extent.
  • the deflector plate 7 On its lower face, the deflector plate 7 is equipped with a central cylindrical recess the periphery of which forms a low annular shoulder 12, into which fits the generally cylindrical upper end lb of the burner head 1, with a very small amount of play.
  • the wall of the burner head 1 has a substantially trapezoidal shape the long base of which faces the bottom when the burner is viewed in transverse cross-section and, in the present case, in radial cross-section.
  • the illustrated burner thus has a retractable flame and can be fitted onto standard cooker surfaces. It consists essetially of two parts which are simple to make and which can be mounted onto one another and onto the surface of such a standard cooker by simply push fitting the parts into one another.
  • the general shape of the burner head 1 can be other than circular in plan view.
  • the burner head 1 can for example be of a generally elongated oval or rectangular shape.
  • This burner operates in the same way as known burners with retractable flame. Under normal or strong operating conditions an annular flame is obtained such as that shown in FIG. 2 as comprising a region of blue flame 13 and a plume 14.
  • the secondary air travels along the direction of the arrow f, and, due to the annular rim 6 of the cylindrical base 2, is slightly deviated towards the upper part 14 of the flame to contribute towards making the flame more upright at the top.
  • the burner When the burner is throttled down, the flame gradually becomes concentrated or gathers together until under very low operating conditions it occupies only the volume of the annular waisting 5 and the flame thus has a very low heat output and is in the shape of a thin ring.
  • a burner head comprising a base, said base being recessed inwardly at its lower end to define a flat rim and including a side wall having a portion inclined inwardly of said burner and beginning at said rim, said side wall being cut away at an end opposite said rim to define a shoulder substantially parallel with said rim, a plurality of spaced slots extending completely through said side wall and extending substantially from said rim to the end of said side wall opposite said rim, a distribution chamber formed within said burner head, a deflector positioned over one end of said distribution chamber and having an undersruface mating with said side wall and being substantially parallel to said shoulder and extending outwardly beyond said shoulder to define a channel.
  • said deflector comprises means defining a recess operative to engage said side wall therein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
US00308809A 1971-11-23 1972-11-22 Auto stabilised gas burner Expired - Lifetime US3820945A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7141876A FR2161354A5 (de) 1971-11-23 1971-11-23

Publications (1)

Publication Number Publication Date
US3820945A true US3820945A (en) 1974-06-28

Family

ID=9086206

Family Applications (1)

Application Number Title Priority Date Filing Date
US00308809A Expired - Lifetime US3820945A (en) 1971-11-23 1972-11-22 Auto stabilised gas burner

Country Status (13)

Country Link
US (1) US3820945A (de)
JP (1) JPS4860325A (de)
AT (1) AT334020B (de)
AU (1) AU459817B2 (de)
BE (1) BE791583A (de)
CA (1) CA959405A (de)
CH (1) CH560869A5 (de)
DE (1) DE2257190A1 (de)
ES (1) ES408888A1 (de)
FR (1) FR2161354A5 (de)
GB (1) GB1399758A (de)
IT (1) IT973594B (de)
NL (1) NL7215536A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6082994A (en) * 1998-03-26 2000-07-04 Gaz De France Gas burner for cooking apparatus
US6155821A (en) * 1998-05-28 2000-12-05 Optimus International Ab Burner assembly for a stove
EP1512909A1 (de) * 2003-09-05 2005-03-09 Electrolux Home Products Corporation N.V. Gasbrenner
US20060000395A1 (en) * 2004-07-01 2006-01-05 Joshi Mahendra L Staged combustion system with ignition-assisted fuel lances
US20060043218A1 (en) * 2002-02-05 2006-03-02 Volker Holzgrefe Fuel injection valve
US10690351B2 (en) * 2009-02-10 2020-06-23 Bsh Home Appliances Corporation Home cooking appliance having a pedestal burner

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2305691A1 (fr) * 1975-03-28 1976-10-22 Gaz De France Procede pour la construction de tetes de bruleurs a combustibles gazeux
JPS5924323B2 (ja) * 1977-02-21 1984-06-08 善三郎 藤村 ガスバ−ナ−のキヤツプにおけるリフテイング防止構造

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6082994A (en) * 1998-03-26 2000-07-04 Gaz De France Gas burner for cooking apparatus
US6155821A (en) * 1998-05-28 2000-12-05 Optimus International Ab Burner assembly for a stove
US20060043218A1 (en) * 2002-02-05 2006-03-02 Volker Holzgrefe Fuel injection valve
US7481201B2 (en) * 2002-02-05 2009-01-27 Robert Bosch Gmbh Fuel injection valve
EP1512909A1 (de) * 2003-09-05 2005-03-09 Electrolux Home Products Corporation N.V. Gasbrenner
EP1983260A1 (de) * 2003-09-05 2008-10-22 Electrolux Home Products Corporation N.V. Gasbrenner
AU2004205320B2 (en) * 2003-09-05 2009-03-12 Electrolux Home Products Corporation N.V. Gas burner
US20060000395A1 (en) * 2004-07-01 2006-01-05 Joshi Mahendra L Staged combustion system with ignition-assisted fuel lances
US7303388B2 (en) * 2004-07-01 2007-12-04 Air Products And Chemicals, Inc. Staged combustion system with ignition-assisted fuel lances
US20080020334A1 (en) * 2004-07-01 2008-01-24 Air Products And Chemicals, Inc. Staged Combustion System With Ignition-Assisted Fuel Lances
US10690351B2 (en) * 2009-02-10 2020-06-23 Bsh Home Appliances Corporation Home cooking appliance having a pedestal burner

Also Published As

Publication number Publication date
ES408888A1 (es) 1975-11-16
AU4909972A (en) 1974-05-23
AU459817B2 (en) 1975-04-10
CA959405A (en) 1974-12-17
IT973594B (it) 1974-06-10
CH560869A5 (de) 1975-04-15
ATA997572A (de) 1976-04-15
DE2257190A1 (de) 1973-05-30
AT334020B (de) 1976-12-27
BE791583A (fr) 1973-05-17
JPS4860325A (de) 1973-08-24
FR2161354A5 (de) 1973-07-06
GB1399758A (en) 1975-07-02
NL7215536A (de) 1973-05-25

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