EP3045812B1 - Brenner - Google Patents

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Publication number
EP3045812B1
EP3045812B1 EP15197542.2A EP15197542A EP3045812B1 EP 3045812 B1 EP3045812 B1 EP 3045812B1 EP 15197542 A EP15197542 A EP 15197542A EP 3045812 B1 EP3045812 B1 EP 3045812B1
Authority
EP
European Patent Office
Prior art keywords
opening
burner
plate
housing
interior space
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.)
Active
Application number
EP15197542.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3045812A1 (de
Inventor
Luis Miguel Pacheco Monteiro
Vijaya Kumar PANTANGI
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.)
Bosch Termotechnologia SA
Original Assignee
Bosch Termotechnologia 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 Bosch Termotechnologia SA filed Critical Bosch Termotechnologia SA
Publication of EP3045812A1 publication Critical patent/EP3045812A1/de
Application granted granted Critical
Publication of EP3045812B1 publication Critical patent/EP3045812B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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, 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
    • 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
    • F23D14/045—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 a plurality of burner bars assembled together, e.g. in a grid-like arrangement
    • 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
    • F23D14/10—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 elongated tubular burner head
    • F23D14/105—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 elongated tubular burner head with injector axis parallel to the burner head axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2203/00—Flame cooling methods otherwise than by staging or recirculation
    • F23C2203/20—Flame cooling methods otherwise than by staging or recirculation using heat absorbing device in flame

Definitions

  • Burners for hot water stations which have a housing and a burner tube, wherein the burner tube is arranged in the housing.
  • the burner tube serves to mix a fuel with air and to burn it by means of a flame arranged above the burner tube in order to heat water in a heat exchanger.
  • an improved burner for a hot water station can be provided by the burner comprising a housing with a plate.
  • the plate divides an interior of the housing into a first interior section and a second interior section.
  • the plate has at least one first slot-shaped opening, which fluidly connects the first interior section with the second interior section.
  • a burner tube is provided, wherein the burner tube is arranged in the first interior portion of the housing.
  • the burner tube has a tube outlet and the housing has an outlet.
  • the tube outlet opens into the outlet of the housing.
  • the plate is disposed adjacent to a side of the burner tube opposite the tube outlet.
  • the first opening is aligned parallel to the burner tube and the first opening in this case has a first lateral offset to the burner tube.
  • the plate has at least one second opening, wherein the second opening is arranged adjacent to the first opening, wherein the second opening preferably has a circular or oval cross section.
  • a further burner tube is provided.
  • the further burner tube is arranged at a distance from the burner tube in the first interior section.
  • the first opening is arranged centrally between the burner tubes.
  • the second opening has a second lateral offset to the burner tube, wherein the second lateral offset is identical to the first lateral offset or different from the first lateral offset.
  • the first opening has the same width as the second opening. It is particularly advantageous if the first opening has a width with a value which is in a range of 1 mm to 5 mm, preferably 2 mm to 4 mm, in particular 3.3 mm to 3.7 mm.
  • the plate has a first extent and the first opening has a second extent, the first extent having a value which is at least 70 percent of the first extent, preferably at least 80 percent of the first extent and / or less than 90 percent of the first extent Extension is.
  • the housing has at least one first inlet and at least one second inlet.
  • the second inlet is arranged adjacent to the plate and connected to the second interior portion.
  • the first inlet is disposed opposite to the plate and connected to the second interior portion.
  • FIGS. 1 and 2 show a perspective view of a burner 10th
  • FIG. 3 shows a sectional view through the in the FIGS. 1 and 2
  • the burner 10 includes in addition to a burner tube 15 even more identically designed burner tubes 16. It was for clarity in FIG. 2 omitted the representation of a plurality of burner tubes 15, 16 of the burner 10 in a housing 20 of the burner 10. Further, for ease of description, reference will be made below to FIG. 2 taken coordinate system 25 which is formed at right angles and having an x-axis, a y-axis and a z-axis. The x-axis correlates with a depth, the y-axis with a width and the z-axis with a Height of the burner 10. These terms will be referred to hereinafter as the coordinate system 25 just described.
  • the burner 10 serves to supply a heat exchanger 30, which is arranged on the upper side of the burner 10 (z-direction), with heat energy.
  • the housing 20 encloses an inner space 35.
  • the housing 20 comprises a first plate 40, which divides the inner space 35 into a first inner space portion 45 and a second inner space portion 50.
  • the burner tubes 15, 16 are arranged along the y-axis by way of example at a uniform distance from each other. Of course, it is also conceivable that the distance between the burner tubes 15, 16 is different from each other.
  • the plate 40 is arranged in an xy plane and runs essentially parallel to a bottom side 55 of the housing 20.
  • the housing 20 has an outlet 60 arranged on an upper side 56.
  • the outlet 60 is arranged adjacent to the heat exchanger 30.
  • the housing 20 has on the bottom first inlet 65, wherein the first inlet 65 is arranged opposite to the first plate 40 and connected to the second interior portion 50.
  • the first inlet 65 serves, as in FIG. 3 shown to fluidly connect the housing 20 via a channel 75 with a blower 70.
  • the blower 70 conveys a fluid from an environment 155 via a channel 75 and the first inlet 65 into the second interior section 50.
  • the housing 20 further includes a second plate 80 disposed at right angles to the first plate 40.
  • the second plate 80 has a plurality of second inlets 85.
  • the second plate 80 is arranged at right angles adjacent to the first plate 40.
  • the second plate 80 is set back in relation to a housing wall 105 arranged parallel to the second plate 80.
  • the first plate 40 is integrated in the housing wall 105 and / or is arranged at the same height of the housing wall 105.
  • the burner tube 15 is formed like a flute in the embodiment and has a tube inlet 90 and a tube outlet 95.
  • the tube outlet 95 extends by means of several tube outlet openings 100 substantially in the x-direction.
  • the tube outlets 95 of the burner tubes 15, 16 open in the outlet 60 of the housing 20. Due to the flute-like configuration of the burner tube 15 of the tube inlet 90 is in a plane perpendicular to the tube inlet 90 and opens into the second inlet 85 of the second plate 80.
  • a second inlet 85 is provided for each burner tube 15, 16 and its tube inlet 90, wherein the second inlet 85 is arranged adjacent to the first plate 40 and connected to the second interior section 45.
  • the first plate 40 itself is arranged on a side of the burner tubes 15, 16 opposite the tube outlets 95.
  • the number of second inlets 85 diverges from the number of burner tubes 15, 16 or their tube inlets 90.
  • the tube inlet 90 is further connectable to a distribution system, wherein the distribution system is preferably connected to each tube inlet 90.
  • a fuel is conveyed from the fuel reservoir to the tube inlet 90 via the distribution system.
  • a reaction partner of the fuel can be conveyed into the tube inlet 90 via the distribution system or can be sucked in from the environment 155 via the tube inlet 90 itself.
  • 16 of the tube inlet 90 is led to the tube outlet 95 of the fuel and possibly additionally the reactants of the fuel and mixed with the fuel.
  • the fuel exits either on its own or together with the reaction partner at the tube outlet 95 on the upper side.
  • FIG. 4 shows a plan view of the in the FIGS. 1 to 3 shown first plate 40.
  • first plate 40 a plurality of mutually parallel first openings 110 are provided.
  • second openings 125 are provided in the first plate 40.
  • third opening 130 is provided in the first plate 40, respectively.
  • the third opening 140 is formed identically to the second opening 125.
  • the second openings 125 are in the y-direction each disposed at the level of the adjacently disposed first opening 110, while the third opening 140 is arranged offset in the y-direction to the adjacently disposed first opening 110.
  • the openings 110, 125, 140 fluidly connect the first interior section 45 to the second interior section 50.
  • the first openings 110 are slot-shaped.
  • the second and third openings 125, 140 is circular.
  • the first plate 40 has a first extension 11 in the x-direction.
  • the first opening 110 has a second extension 12.
  • the second extent l2 is at least 70 percent, preferably at least 80 percent of the extent l1 of the first plate 40.
  • the second extent l2 is less than 90 percent of the first extent l1.
  • the first opening 110 has a first width in the y-direction and the second opening 125 and third opening 140 has a second width.
  • the first width corresponds to the second width and has a value which lies in a range of 1 mm to 5 mm, preferably 2 mm to 4 mm, in particular 3.3 mm to 3.7 mm.
  • the burner tubes 15, 16 have a center plane 114.
  • the center plane 114 of the burner tubes 15 extends substantially in an xz-plane centered on a maximum extent of the burner tube 15, 16 in the x-direction.
  • the first openings 110 are aligned parallel to the center plane 114 of the burner tubes 15 and the burner tubes 15, 16 themselves.
  • the first opening 110 has a first lateral offset 130 (y-direction) relative to the burner tube 15 arranged adjacent to the first opening 110 (z-direction) or to the center plane 114.
  • the second opening 125 has a second lateral offset 135 (y-direction) to the burner tube 15 or to the center plane 114.
  • the first offset 130 and the second offset 135 are selected such that the first or second openings 110, 125 are arranged centrally, relative to a projection of the burner tubes 15, 16 on the first plate, between the burner tubes 15, 16.
  • the housing 20 has a first side surface 115 facing the interior 35 and a second side surface 120 facing the interior 35 and arranged opposite the first side surface 115.
  • the side surfaces 115, 120 extend in the xz plane and are arranged for example perpendicular to the housing wall 105.
  • the first opening 110 in the y-direction to the adjacent to the first opening 110 disposed first and second side surfaces 115, 120 has a first distance a1, the half of a distance a2 of the center plane 114 of adjacent to the side surface 115, 120th arranged burner tube 15 is.
  • the third opening 140 has a third offset 150 (y-direction) that is different from the first offset 130.
  • the third offset 150 is advantageously smaller than the first offset 130 of the first opening 110 directly adjacent to the side face 115, 120.
  • the first offset 130 is larger by 1 mm to 5 mm than the third offset 150.
  • a number of the first openings 110 or a sum of the second and third openings 125, 140 is, for example, one greater than a number of the burner tubes 15, 16.
  • the first openings 110 are arranged in the y-direction directly below the burner tubes 15, 16.
  • another arrangement of the first openings 110 to each other and to the burner tubes 15, 16 conceivable.
  • the second or third openings 125, 140 are dispensed with.
  • the first openings 110 are arranged at an irregular distance from the burner tubes 15.
  • a fluid with the reactant from the environment 155 is sucked in via the blower 70 and conveyed into the channel 75. Via the channel 75, the fluid enters the second interior section 50 via the first inlet 65. Due to the blower 70, this results in flow concentrations at the first plate 40. The fluid enters the first interior section 45 via the openings 110, 125, 140.
  • the flow concentrations are compensated. This makes it possible, compared to known burners to reduce flow variations in the housing 20 by 30 percent. Further, a deviation from an average flow rate through the openings 110, 125, 140 may be maintained below 10 percent.
  • the fluid flowing through the openings 110, 125, 140 flows along the burner tubes 15, 16 toward the outlet 60 of the housing 20. In doing so, it interacts with fuel (fluid) mixture flowing out of the tube outlet 95.
  • fuel fluid
  • the uniform flow rate of the fluid flowing through the first interior section 45 when a flame 160 is ignited above the burner tubes 15, 16, the flame 160 can be stabilized in an improved manner and the combustion of the flame 160 can be improved.
  • the uniform distribution of a velocity of the fluid flowing through the first interior section 45 avoids cold and hot spots in the flame 160, thus avoiding CO concentrations in the flame 160 and thus reducing overall CO emissions. This effect is in particular independent of the configuration of the outlet 60 and the configuration of the burner tubes 15. Furthermore, turbulences in the first interior section 45 are avoided, which could possibly negatively affect the NOx.
  • a particularly efficient and low-emission burner 10 can be provided which acts optimally over a wide range of speeds of fluid flow through the housing 20.
  • burner 10 is exemplary. It should also be noted that the burner 10 is optimized in its application for hot water treatment, but of course can take on other tasks. However, in the FIGS. 1 to 4 described burner 10 particularly suitable for water heater particularly well.
EP15197542.2A 2015-01-19 2015-12-02 Brenner Active EP3045812B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PT108156A PT108156A (pt) 2015-01-19 2015-01-19 Queimador

Publications (2)

Publication Number Publication Date
EP3045812A1 EP3045812A1 (de) 2016-07-20
EP3045812B1 true EP3045812B1 (de) 2019-02-20

Family

ID=54780164

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15197542.2A Active EP3045812B1 (de) 2015-01-19 2015-12-02 Brenner

Country Status (3)

Country Link
EP (1) EP3045812B1 (pt)
ES (1) ES2727337T3 (pt)
PT (2) PT108156A (pt)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8420796V0 (it) * 1984-02-09 1984-02-09 Ferroli Ind Riscaldamento Struttura di generatore di calore con bruciatore atmosferico a rendimento ottimizzato.
AT385834B (de) * 1986-06-10 1988-05-25 Vaillant Gmbh Gasbrenner
DE3914222A1 (de) * 1988-05-11 1989-11-23 Wolf Klimatechnik Gmbh Heizkessel mit atmosphaerischem brenner und optimierter sekundaerluftzufuehrung
AT399381B (de) * 1993-05-13 1995-04-25 Vaillant Gmbh Gussgliederkessel
KR100808318B1 (ko) * 2007-01-19 2008-02-27 주식회사 경동나비엔 가스보일러용 버너
CN103185339B (zh) * 2011-12-28 2016-08-03 株式会社能率 浓淡火焰燃烧器及燃烧装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
PT3045812T (pt) 2019-03-25
PT108156A (pt) 2016-07-19
ES2727337T3 (es) 2019-10-15
EP3045812A1 (de) 2016-07-20

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