EP0560710B1 - Brûleur à gaz - Google Patents

Brûleur à gaz Download PDF

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Publication number
EP0560710B1
EP0560710B1 EP19930810110 EP93810110A EP0560710B1 EP 0560710 B1 EP0560710 B1 EP 0560710B1 EP 19930810110 EP19930810110 EP 19930810110 EP 93810110 A EP93810110 A EP 93810110A EP 0560710 B1 EP0560710 B1 EP 0560710B1
Authority
EP
European Patent Office
Prior art keywords
chamber
section
burner
gas
bore
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
EP19930810110
Other languages
German (de)
English (en)
Other versions
EP0560710A3 (fr
EP0560710A2 (fr
Inventor
Walo Steiger
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.)
Frei Siegfried
Original Assignee
Frei Siegfried
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 Frei Siegfried filed Critical Frei Siegfried
Publication of EP0560710A2 publication Critical patent/EP0560710A2/fr
Publication of EP0560710A3 publication Critical patent/EP0560710A3/fr
Application granted granted Critical
Publication of EP0560710B1 publication Critical patent/EP0560710B1/fr
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

Definitions

  • the invention relates to a gas burner for the combustion of a premixed gas / air mixture according to the preamble of claim 1.
  • the object of the present invention is to provide a gas burner for the combustion of a premixed gas / air mixture with which all customary gases such as butane, propane, natural gas, etc., in compliance with the currently applicable and coming into force limit values, as described in the Air pollution control regulations are prescribed, can be achieved.
  • This object is achieved by a gas burner as specified in the characterizing features of claim 1.
  • Advantageous embodiments of the invention are defined in the dependent claims.
  • Gas / air mixture vortices create a stationary flame at the end of the burner bore and keep the proportions of the pollutants within the prescribed limits.
  • the hollow circular cylindrical guidance of the inflowing gas / air mixture is produced by introducing the gas / air mixtures into two coaxially arranged annular spaces of unequal cross-section. A narrowing of the cross-section of the burner bore above the annular spaces causes additional mixing and stabilization of the gas / air mixture led to the outlet opening of the burner bore.
  • the cross-sectional constriction is advantageously designed in a step-like manner and the section of the burner bore that leads to the surroundings and adjoins the constriction is provided with the same cross-section as that which lies within the constriction.
  • the flow rate of the gas / air mixture supplied by the feed can be reduced. Due to the larger cross section of the second chamber section, the entering gas / air mixture calms down, which then leads tangentially into the burner bore through two channels of the same cross section as the cross section of the bore of the intermediate wall.
  • the gas burner 1 is accommodated in a block-shaped housing 3 made of metal, which is connected to a gas / air feed line 7 by a connecting line 5.
  • the connecting line 5 can also be part of the housing 3; for manufacturing reasons it is preferably designed as an independent part and will be added later connected to the housing 3.
  • the housing 3 there is a burner bore 9 formed with cylindrical walls, on the bottom or bottom 11 of which two cylindrical disks 13 and 15 are inserted coaxially to the axis A of the burner bore 9.
  • the two disks 13 and 15 can be part of a pin 17 which closes off the burner bore 9 at the bottom.
  • the upper end of the burner bore 9 merges into a cross-sectional constriction 21 in one step, forming a circular section.
  • the cross-sectional constriction 21 can be designed as a cylindrical section 20. Following the cross-sectional constriction 21, the burner bore 9 widens again to the original diameter D 1 and forms a combustion chamber 23 which is open on the surface of the housing 3. Between the disk 13 and the wall of the burner bore 9 there is an annular gap 25 with the width of a few tenths of a millimeter. Between the disk 15 and the wall of the burner bore 9 there is a second annular gap 27 of greater width than the annular gap 25.
  • a calming chamber 29 is arranged in the housing 3 and is divided into two chamber sections 31 and 33.
  • the upper chamber section 31 is designed as a cylindrical bore with a diameter d 1 .
  • the lower chamber section 33 can also be mounted in the housing 3 itself, but is preferably arranged within the connecting line 5 for manufacturing reasons and likewise has a cylindrical cross section.
  • the lower chamber section 33 has a smaller diameter d 2 than the upper chamber section 31.
  • a connecting bore 35 leads from the chamber section 31 to the chamber section 33. Its diameter d 3 is smaller than the diameter d 2 of the chamber section 33.
  • An essentially analog second connecting line 37 leads from the lower chamber section 33 into the gas / air feed line 7.
  • the sections are preferably located 31 and 33 of the calming chamber 29 on a common axis B.
  • a first channel 39 leads tangentially into the annular gap 25 between the wall of the burner bore 9 and the jacket of the disk 13.
  • a second channel 41 which likewise emerges from the upper chamber section 31 into the annular gap 27 leads between the wall of the burner bore 9 and the jacket of the disc 15.
  • the two channels 39 and 41 preferably each have a cross section that is equal to the cross section of the connecting bores 35 and 37 on the lower chamber section 33.
  • the connection 5 with the lower chamber section 33 can be glued or screwed to the housing 3 and the gas / air feed line 7.
  • the mode of operation of the gas burner 1 is briefly explained below. From the gas / air feed line 7, a preferably stoichiometrically dimensioned gas / air mixture flows through the connecting hole 37 into the lower chamber section 33 of the calming chamber 29. The gas / air mixture leaves the lower chamber section 33 through the upper connecting hole 35 and reaches the upper chamber section 31, the latter Cross-section is larger than that of the lower chamber section 33. Both in the lower chamber section 33 and in the upper chamber section 31, the inflowing gas / air mixture takes place. In addition, the flow velocity of the gas / air mixture decreases when passing from the lower chamber section 33 into the upper chamber section 31. The upper chamber section 31 leaves the gas / air mixture in approximately equal parts through the two channels 39 and 41.
  • the gas / air mixture leaves the narrow one Gap 25 as a rotating hollow cylinder and combines with the gas / air mixture leaving the annular gap 27, which has been fed through the channel 41 into the annular gap 27, also as a rotating hollow cylinder.
  • the two combined rotating hollow cylindrical gas masses flow through the cross-sectional constriction 21 into the combustion chamber 23 and continue to leave it as a rotating gas vortex which is ignited on the surface of the housing 3 and burns there.
  • the burning hollow cylinder spreads in a goblet or tulip shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Claims (10)

  1. Brûleur à gaz pour la combustion d'un mélange gaz/air prémélangé, pourvu d'un boîtier (3) avec un alésage de brûleur (9) ouvert et relié à une chambre de stabilisation (29) par deux canaux (39, 41) débouchant dans la paroi de l'alésage de brûleur (9), la partie supérieure de cette chambre (29) étant raccordée à une conduite d'alimentation (7) en mélange gaz/air, caractérisé en ce que le premier canal (39) débouche dans un premier espace annulaire (25) et le second canal (41) dans un second espace annulaire (27) situé au-dessus du premier espace (25) et dont la section est supérieure à celle du premier espace annulaire (25).
  2. Brûleur à gaz selon la revendication 1 caractérisé en ce que les espaces annulaires (25, 27) sont obtenus par saignée sur le fond (11) de l'alésage de brûleur (9) ou formés par des disques cylindriques (13, 15) y ayant été placés.
  3. Brûleur à gaz selon l'une des revendications 1 et 2 caractérisé en ce que l'alésage de brûleur (9) présente une contraction de section droite (21) au-dessus des points d'arrivée des canaux (39, 41).
  4. Brûleur à gaz selon la revendication 3 caractérisé en ce que la contraction de section droite (21) est formée comme une marche (19) et présente une section en forme d'anneau de cercle (20) du côté de l'alésage.
  5. Brûleur à gaz selon l'une des revendications 3 et 4 caractérisé en ce que l'alésage de brûleur (9) en dehors de la contraction de section droite (21) est formé comme une chambre de combustion (23) et présente la même section que l'alésage de brûleur (9) intérieur.
  6. Brûleur à gaz selon l'une des revendications 1 à 5 caractérisé en ce que la chambre de stabilisation (29) est divisée en deux parties (31, 33) reliées l'une à l'autre par un alésage de raccordement (35).
  7. Brûleur à gaz selon la revendication 6 caractérisé en ce que la première partie de chambre (33) raccordée à la conduite d'alimentation (7) présente une section inférieure à celle de la seconde partie de chambre (31) de la chambre de stabilisation (29).
  8. Brûleur à gaz selon l'une des revendications 6 et 7 caractérisé en ce que les deux canaux (39, 41) mènent de la seconde partie de chambre (31) à l'alésage de brûleur (9).
  9. Brûleur à gaz selon la revendication 8 caractérisé en ce que les deux canaux (39, 41) débouchent tangentiellement dans les espaces annulaires (25, 27).
  10. Brûleur à gaz selon l'une des revendications 6 à 9 caractérisé en ce que les sections des deux canaux (39, 41) sont de même dimension que les sections des alésages de raccordement (35, 37) dans la chambre de stabilisation (29).
EP19930810110 1992-03-11 1993-02-19 Brûleur à gaz Expired - Lifetime EP0560710B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH78992 1992-03-11
CH789/92 1992-03-11

Publications (3)

Publication Number Publication Date
EP0560710A2 EP0560710A2 (fr) 1993-09-15
EP0560710A3 EP0560710A3 (fr) 1993-11-03
EP0560710B1 true EP0560710B1 (fr) 1996-07-10

Family

ID=4195225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930810110 Expired - Lifetime EP0560710B1 (fr) 1992-03-11 1993-02-19 Brûleur à gaz

Country Status (2)

Country Link
EP (1) EP0560710B1 (fr)
DE (1) DE59303167D1 (fr)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH651645A5 (de) * 1980-12-03 1985-09-30 Febrag Ag Gasbrenneranordnung und verwendung derselben zur erzeugung von heissluft.

Also Published As

Publication number Publication date
DE59303167D1 (de) 1996-08-14
EP0560710A3 (fr) 1993-11-03
EP0560710A2 (fr) 1993-09-15

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