EP0554511B1 - Gasbrenner - Google Patents

Gasbrenner Download PDF

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Publication number
EP0554511B1
EP0554511B1 EP92115875A EP92115875A EP0554511B1 EP 0554511 B1 EP0554511 B1 EP 0554511B1 EP 92115875 A EP92115875 A EP 92115875A EP 92115875 A EP92115875 A EP 92115875A EP 0554511 B1 EP0554511 B1 EP 0554511B1
Authority
EP
European Patent Office
Prior art keywords
burner
gas
gas outlet
flow
burner according
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
EP92115875A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0554511A1 (de
Inventor
Kurt Gertler
Werner Gronnenberg
Klaus Holm
Jörn Naumann
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.)
Elektro- und Gas-Armaturen-Fabrik GmbH
Original Assignee
Elektro- und Gas-Armaturen-Fabrik GmbH
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 Elektro- und Gas-Armaturen-Fabrik GmbH filed Critical Elektro- und Gas-Armaturen-Fabrik GmbH
Publication of EP0554511A1 publication Critical patent/EP0554511A1/de
Application granted granted Critical
Publication of EP0554511B1 publication Critical patent/EP0554511B1/de
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
    • F23D14/46—Details
    • F23D14/70—Baffles or like flow-disturbing devices
    • 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
    • F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • 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
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00003—Fuel or fuel-air mixtures flow distribution devices upstream of the outlet

Definitions

  • the invention relates to a gas burner, in particular an atmospheric gas burner with primary air premixing, with a burner ring having gas outlet channels and with a burner cover which may be formed in one piece therewith, the central axis of the gas outlet channels having an angle deviating from 0 ° to a radius assigned to the respective outlet opening.
  • Gas burners for cookers are known in various designs.
  • the known burners have flame outlet openings, which are designed as slots, millings or bores, which are generally directed radially outward from an imaginary center of the burner.
  • gas outlet channels are already known, the central axis of which have an angle deviating from 0 ° to a radius assigned to the respective outlet opening.
  • Such gas outlet channels are also described in other references, for example in FR-A-1 360 192, FR-A-1 479 360, FR-A-1 527 971, BE-A-645 327, NL-A -36,302 or US-A-1,598,996.
  • the FR-A-1 303 237 already mentioned at the beginning is provided with a roof-shaped upper outer edge to prevent penetration to prevent overcooking food or boiling liquids into the gas outlet openings.
  • a compact gas burner design is known from BE-A-902 029, in which, unlike in other solutions, the gas outlet openings are not arranged in the burner cap but in a burner ring, which can simplify the design options for such burners.
  • the object of the invention is to provide a solution with which, in particular in the case of atmospheric burners, the NO x content in the exhaust gas and the CO content are considerably reduced, specifically over a large control range between the small and large positions of the burner.
  • the burner cover projects beyond the free contour of the burner ring in the area of the gas outlet openings to form a flow edge reducing the gas outlet opening that the burner ring in the lower region of the gas outlet openings has an outer edge which is of outstanding design.
  • the gases are guided to a certain extent after exiting the channels and the outlet cross sections of the flow channels are reduced in the direction of the outlet , which leads to an increase in the exit speed.
  • the desired exhaust gas values can thus be achieved.
  • the combustion is also optimized by the fact that the flames only start outside the burner head, which has the additional effect that the burner head remains colder, i.e.
  • the desired flame cooling is achieved solely by the geometry of the gas channels.
  • An additional advantage is that the flames cannot find the shortest path from the flame outlet opening to the rim of the pot when the pot is in place, but are forced to linger longer under the bottom of the pot, resulting in a kind of screw flow below the bottom of the pot.
  • the result of this is that the flame energy can be used much better, ie in order to achieve the same cooking performance, the burner can either be in operation for a shorter period of time or else with a reduced one Attitude are operated, which inevitably results in a lower overall pollution of the environment.
  • the slots can be designed as bores, they can have a straight or curved course both in their axial direction and in their cross-sectional shape, V-shaped cross-sections can be provided as well as channels of different sizes arranged in parallel next to each other, which results in optimal control between partial load and full load.
  • additional outlet openings can also be provided to form auxiliary flames.
  • the burner cover In order to be able to better adapt the flow conditions to the respective applications within the burner, it may be expedient to provide the burner cover with a flow guide cone and / or with swirling / cooling fins.
  • the flow channels inside the burner can also be designed differently according to the invention.
  • the gas burner shown partially in section in FIGS. 1, 1a, generally designated 1, has the following structure:
  • a burner stand 2 with an injector 20 passes through an indicated gas trough 3.
  • the area of the burner stand that projects beyond the gas trough 3 is surrounded by a plug-on attachment 4 onto which a burner ring 5 is mounted, which is shown in part in supervision in FIG. 1.
  • the burner is closed off at the top by a burner cover 6, which in the example shown in FIG. 1 is centrally equipped with an inward-pointing flow cone 7.
  • the burner ring 5 can be seen to be equipped with a large number of gas outlet channels 8, the central axis of which is indicated by an arrow 9 in FIG Angle to the corresponding radius, designated 10, the angle is designated in Fig. 1a with ⁇ .
  • the free outlet end of the gas outlet channels 8 bears the reference symbol 8a.
  • Fig. 6 similar to Fig. 1a, the burner ring 5 is shown in plan with indicated flames 11, which are recognizably not directed radially outwards, but have an angle to the radial flow, so that there is a vortex formation.
  • the channels 8 shown in FIGS. 6 and 1a are straight there in supervision, in FIG. 7 the possibility is shown to make these channels arcuate.
  • channels 8 or 8 ' can be straight or curved when viewed from above, they can have a wide variety of cross-sectional shapes; a selection of these cross-sectional shapes is indicated in FIG. 9.
  • channels of circular cross-section can also be provided, this is indicated by 8 ′′ in FIG. 9, or adjacent ones with different cross-sectional sizes, this is indicated by 8 ′′ in FIG. 9.
  • gas outlet slots or bores can be provided below the gas outlet channels, in order to e.g. to form auxiliary flames at full load, which is indicated in FIG. 2 by an arrow 12, while the gas flow course through the gas outlet channels 8 is designated by 13.
  • Fig. 3 it is also shown that additional openings 14 can be provided to suck in secondary air from below the trough 3, which is used for flame cooling, the flow path of this secondary air is designated by 15 in Fig. 3.
  • the burner cap is designated 6 throughout, even if it has a cross-sectional shape or edge design that differs from other representations.
  • the curved flow cone is designated by 7 (FIG. 8a) and by 7 'in the straight course in the case 8b.
  • cooling fins 16 can also be provided in the cover 6, for example, which may have a spiral course for pre-swirling or may also surround the flow cone concentrically, different cross-sectional shapes are shown in FIGS. 5a and 5b.
  • 11 to 15 show different configurations of the respective course of the gas outlet channels 8 relative to the free front edge 6a of the burner cover on the one hand and 5a of the burner ring on the other hand relative to the outlet opening 8a.
  • FIG. 11 shows a design similar to FIG. 11, but here the transition areas to the free outer edges 6a and 5a are shown diverging, in FIG. 13 there is a converging course.
  • FIG. 14 shows a bellows-widening inflow space designated 17 for the gas before entering the gas outlet channels 8.
  • FIG. 15 shows an essentially parallel gas flow path 17 ′.
  • 16 shows an area 17 ′′ widening from the inside out, which is brought about by a gas guide or deflection body 18 in the interior of the burner.
  • a further baffle insert 18 ' is shown in FIG. 17, which in particular optimizes the secondary flame formation.
  • FIG. 18 A further exemplary embodiment of the invention is shown in FIG. 18, wherein the parts that are otherwise the same as in FIG. 1 have the same reference numerals, supplemented by a "c".
  • the injector 20c is fixed on the stand 2c by means of a clamping ring 21, it being possible for the plug-in attachment 4c to be fixed on the sheet metal of the hob 3c simultaneously with the clamping ring 21.
  • the burner is made of three parts from the elements 5c burner ring and 6c burner cover, since an intermediate disk 19 which also provides the flow edge for the gas flame is provided in the front edge region of the burner cover 6c.
  • baffle and guide bodies in their cross-sectional shapes also represent examples, such as the designs of the flow guide cone 7, the cooling fins 16 or the special cross-sectional and profile shapes of the channels 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Glass Compositions (AREA)
  • Gas Separation By Absorption (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
EP92115875A 1992-02-08 1992-09-17 Gasbrenner Expired - Lifetime EP0554511B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4203668A DE4203668A1 (de) 1992-02-08 1992-02-08 Gasbrenner
DE4203668 1992-02-08

Publications (2)

Publication Number Publication Date
EP0554511A1 EP0554511A1 (de) 1993-08-11
EP0554511B1 true EP0554511B1 (de) 1996-04-10

Family

ID=6451239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92115875A Expired - Lifetime EP0554511B1 (de) 1992-02-08 1992-09-17 Gasbrenner

Country Status (17)

Country Link
US (1) US5649822A (cs)
EP (1) EP0554511B1 (cs)
JP (1) JPH06506764A (cs)
AT (1) ATE136633T1 (cs)
AU (1) AU652860B2 (cs)
BR (1) BR9205865A (cs)
CA (1) CA2108020A1 (cs)
CZ (1) CZ9302016A3 (cs)
DE (2) DE4203668A1 (cs)
ES (1) ES2087384T3 (cs)
FI (1) FI934385A7 (cs)
GR (1) GR3019809T3 (cs)
HU (1) HUT67774A (cs)
PL (1) PL300706A1 (cs)
SK (1) SK107693A3 (cs)
TR (1) TR26749A (cs)
WO (1) WO1993016328A1 (cs)

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Also Published As

Publication number Publication date
GR3019809T3 (en) 1996-07-31
ATE136633T1 (de) 1996-04-15
DE4203668A1 (de) 1993-08-12
EP0554511A1 (de) 1993-08-11
PL300706A1 (en) 1994-03-07
ES2087384T3 (es) 1996-07-16
HU9302834D0 (en) 1994-01-28
FI934385A0 (fi) 1993-10-06
WO1993016328A1 (de) 1993-08-19
AU652860B2 (en) 1994-09-08
DE59205966D1 (de) 1996-05-15
AU2566792A (en) 1993-09-03
JPH06506764A (ja) 1994-07-28
SK107693A3 (en) 1994-03-09
US5649822A (en) 1997-07-22
CZ9302016A3 (en) 1994-04-13
FI934385L (fi) 1993-10-06
TR26749A (tr) 1995-05-15
CA2108020A1 (en) 1993-08-09
FI934385A7 (fi) 1993-10-06
BR9205865A (pt) 1994-07-05
HUT67774A (en) 1995-04-28

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