KR100883796B1 - Bunsen burner using lean rich combustion type - Google Patents

Bunsen burner using lean rich combustion type Download PDF

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Publication number
KR100883796B1
KR100883796B1 KR1020080004823A KR20080004823A KR100883796B1 KR 100883796 B1 KR100883796 B1 KR 100883796B1 KR 1020080004823 A KR1020080004823 A KR 1020080004823A KR 20080004823 A KR20080004823 A KR 20080004823A KR 100883796 B1 KR100883796 B1 KR 100883796B1
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KR
South Korea
Prior art keywords
burner
plurality
portion
hole
flame
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KR1020080004823A
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Korean (ko)
Inventor
김호근
Original Assignee
주식회사 경동나비엔
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Priority to KR1020080004823A priority Critical patent/KR100883796B1/en
Application granted granted Critical
Publication of KR100883796B1 publication Critical patent/KR100883796B1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/045Premix 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C6/00Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F23C6/04Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
    • F23C6/045Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/48Nozzles
    • F23D14/58Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F23D14/583Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/62Mixing devices; Mixing tubes
    • F23D14/64Mixing devices; Mixing tubes with injectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D2203/00Gaseous fuel burners
    • F23D2203/10Flame diffusing means
    • F23D2203/102Flame diffusing means using perforated plates
    • F23D2203/1026Flame diffusing means using perforated plates with slotshaped openings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D2900/00Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00003Fuel or fuel-air mixtures flow distribution devices upstream of the outlet

Abstract

An object of the present invention is to provide a burner with less generation of pollutants and improved flame stability by adopting a structure that combines a lean-rich burner in the Bunsen burner.
According to the present invention, a venturi plate having a venturi hole is formed to introduce a mixed gas of primary air, which is a part of air supplied from a fan, and fuel injected from a nozzle unit, and guides the introduced mixed gas upward. A guide plate, an inclined surface having a plurality of first flame holes for ejecting the mixed gas inclined with respect to the vertical direction, and a plurality of through holes extending downward from a lower side of the inclined surface to allow a portion of the mixed gas to pass therethrough; A plurality of burner body including a side portion; A plurality of side ends are respectively connected to the plurality of burner body side parts, a plurality of lean combustion by mixing the mixture gas passed through the through hole and the secondary air supplied along the outer surface of the burner body of the air introduced by the fan is mixed It comprises a; connecting plate formed with a second flame hole.

Description

Bunsen burner using lean-rich combustion method {BUNSEN BURNER USING LEAN RICH COMBUSTION TYPE}

The present invention relates to a Bunsen burner using a lean-rich combustion method, and more particularly, to a Bunsen burner capable of reducing pollution and improving combustion stability by applying a lean-rich combustion method to a Bunsen burner. It's about a burner.

In general, in the combustion method of gas fuel, premixed combustion in which gas fuel and combustion air are mixed in advance and then supplied to the combustion chamber, diffused combustion for separately supplying fuel and air, and premixed combustion and diffused combustion are mixed. There is partial premixed combustion.

The partial premixed combustion refers to the combustion produced by the Bunsen burner. The Bunsen burner pre-mixes the primary air and the fuel, which is a part of the supplied air, and supplies the secondary air to the flame-generating part. To induce.

The diffusion flame has a disadvantage in that flame stability is good but a lot of pollutants such as CO and NOx are generated.In the case of the premixed burner, pollutants such as CO and NOx are little, but backfire occurs when burning in a low load region. If the load is increased, the air flow rate of the mixed gas increases, so that the flame is blown, and thus an unstable flame is formed.

The Bunsen burner adopts the advantages of a diffusion flame and a premixed burner and can improve flame stability while reducing generation of pollutants.

On the other hand, as a modification of the structure of the Bunsen burner (LEAN-RICH BURNER) is known.

The lean-rich burner is a burner in which both the RICH COMBUSTION, which burns more gas in the fuel than the required air, and the LEAN COMBUSTION, which burns the gas in the fuel less than the required air.

That is, in addition to the mixed gas in which primary air and rich fuel are mixed, such as Bunsen burner, the secondary air is separately supplied, but the secondary air is mixed and combusted. It is supposed to be.

Such lean-rich burners are used in gas boilers because of the low generation of pollutants, good flame stability, and short flame length.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a burner having less pollution and improved flame stability by adopting a structure in which a lean-rich burner is combined with a Bunsen burner.

In order to achieve the above object, the present invention provides a venturi plate having a venturi hole formed so that a mixture gas of primary air, which is a part of air supplied from a fan, and fuel injected from a nozzle unit is introduced therein, and the inlet of the mixed gas. A guide plate for guiding the gas, an inclined portion having a plurality of first flame holes for ejecting the mixed gas inclined with respect to the vertical direction, and extending downward from a lower side of the inclined portion so that a portion of the mixed gas passes therethrough; A plurality of burner bodies including side portions having through holes formed therein; A plurality of side ends are respectively connected to the plurality of burner body side parts, a plurality of lean combustion by mixing the mixture gas passed through the through hole and the secondary air supplied along the outer surface of the burner body of the air introduced by the fan is mixed A connection plate having a second flame hole formed therein; It is made, including.

In this case, the connection plate may be configured to be coupled to the upper end of the burner body side portion.

In addition, the burner body is formed to extend from the first inclined downwardly from the first horizontal portion and the first horizontal portion formed in a plane having a predetermined width at the upper end and the first inclined hole formed with a first flame hole and the first inclined portion. A burner upper plate formed of the first side portion having the through hole; And a burner lower plate installed to be symmetrical with the burner upper plate.

According to the present invention, the salt hole is formed to be inclined, so that the flame retardant function is improved, the burner body width can be reduced, and the secondary air can be easily supplied, and the combustion performance is improved. In addition, by applying the lean-rich combustion method to the Bunsen burner, the amount of pollutants generated is reduced and the flame stability is improved.

Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a side cross-sectional schematic view showing the configuration of a burner according to the present invention, Figure 2 is a perspective view showing a combined state of the burner body and the connection plate according to the present invention, Figure 3 is a burner body and the connection plate shown in FIG. An exploded perspective view of.

Referring to FIG. 1, a casing part 10 in which an installation area for a component of a burner is formed, and a fan connected to a lower side of the casing part 10 to supply external air into the casing part 10 ( 20) is connected to one side of the casing portion 10, the front end portion is located inside the casing portion 10, the nozzle unit 30 for injecting gas, the casing portion 10 is installed inside the flame The burner body 100 to be formed is provided.

The heat exchanger 1 is installed on the burner body 100.

The burner body 100 is located on the upper side of the casing portion 10 and the burner upper plate 110 and the lower burner plate 120 are symmetrically symmetrically formed to have an octagonal shape in cross section.

The burner top plate 110 is formed to be inclined downward from the left and right ends of the first horizontal portion 114 and the first horizontal portion 114 formed in a plane having a predetermined width at an upper end thereof, and a length of the burner upper plate 110. A first inclined portion 116 having a plurality of first flame holes 112 spaced apart at regular intervals along a direction, and extending in a vertical downward direction from a lower end of the first inclined portion 116 and being fixed along a longitudinal direction It is comprised by the 1st side part 118 in which the some through-hole 113 spaced apart.

The first flame hole 112 is formed in the first inclined portion 116 to minimize the lifting of the flame (ie, flame stability) by ejecting the mixed gas inclined with respect to the vertical direction. In this case, the first inclined portion 116 may be formed at various angles.

The width of the first horizontal portion 114 of the burner top plate 110 may be minimized to prevent deterioration due to the flame formed in the first flame hole 112.

The burner lower plate 120 is connected to a lower side of the burner upper plate 110, and has a second horizontal portion 124 formed in a flat surface having a predetermined width at a lower end thereof, and an end of the second horizontal portion 124. The second inclined portion 122 inclined upward and the second side portion 128 extended upward from the upper end of the second inclined portion 122.

The venturi plate 200 is installed at one side of the burner lower plate 120. The venturi plate 200 is installed at one open side of the burner body 100 that is in front of the nozzle unit 30, and is supplied from the gas injected from the nozzle unit 30 and the fan 20. Venturi-shaped venturi holes 210 are formed to allow the mixed gas mixed with the primary air to flow into the burner body 100.

The end plate 300 is installed at the other side of the burner lower plate 120 so as to face the venturi plate 200.

The guide plate 400 is horizontally installed at the inner central portion of the burner body 100. The mixed gas introduced through the nozzle unit 30 and the venturi hole 210 is guided by the guide plate 400 and is supplied to the upper portion of the burner body 100.

One end of the guide plate 400 is installed to be in close contact with the venturi plate 200, and the other end of the guide plate 400 is spaced apart from the end plate 300 to guide the mixed gas supplied from the nozzle unit 30 and the fan 20. The plate 400 is guided to the end plate 300 side and then supplied into the burner upper plate 110.

The burner upper plate 110 and the burner lower plate 120 are made of a metal material. For example, the burner upper plate 110 may be made of stainless steel, and the burner lower plate 120 may be made of steel.

The burner body 100 is installed side by side at least one or more, preferably three at a predetermined interval inside the casing (10).

Between the plurality of burner bodies 100, a plurality of second flame holes 610 are spaced apart at regular intervals along a length direction, and a connection plate 600 is provided. Both ends of the connection plate 600 are coupled to the first side portion 118 of the two burner bodies 100.

In this case, the connection plate 600 is preferably coupled to the uppermost end of the burner body 100 first side portion 118 so that air can be smoothly supplied to the flame formed in the first flame hole (112).

The lower side of the burner body 100 has one end coupled to the casing portion 10 and the burner body 100 to extend horizontally toward the nozzle portion 30, and the bent portion 510 having the other end bent upwards. The formed secondary air diffusion plate 500 is installed.

A plurality of secondary air ejection holes 520 are drilled in the secondary air diffusion plate 500, and the bent portion 510 is provided with a fixing hole into which the venturi hole 210 of the venturi plate 200 is inserted and fixed. 512 is formed.

The operation of the present invention having the above configuration will be described with reference to FIGS. 4 to 6.

Figure 4 is a schematic diagram showing the operating state of the burner of the present invention, Figure 5 is a schematic diagram showing a state in which the mixed gas is supplied through the nozzle portion and the venturi hole of the present invention, Figure 6 is a rich combustion and lean combustion in the burner of the present invention Is a schematic showing the state where it occurs.

The fuel supplied through the fuel supply unit (not shown) is injected at a high speed into the venturi hole 210 from the nozzle unit 30.

On the other hand, the air supplied from the lower side of the casing unit 10 through the fan (20), the secondary air blowing formed in the primary air and the secondary air diffusion plate 500 introduced into the venturi hole 210 It is divided into secondary air ejected from the lower side to the upper side through the ball 520.

When the fuel injected from the nozzle end of the nozzle unit 30 passes through the venturi hole 210 of the venturi plate 200, a burner body in the form of a mixed gas in which primary air around the nozzle unit 30 is mixed together ( 100 is supplied into the interior and flows in the direction of the arrow.

The guide plate 400 is sufficiently mixed while the primary air mixed with fuel through the nozzle unit 30 moves from the A point to the B point, and can be stably moved to the inner region of the burner upper plate 110. It will lead to

Secondary air blown upward through the secondary air blowing holes 520 is supplied along the outer surface of the burner body 100. That is, it is led upward along the space between two adjacent burner body 100 side parts (118, 128).

The mixed gas supplied into the burner upper plate 110 via the guide plate 400 is ignited in the first flame hole 112 formed in the first inclined portion 116 to form a flame. In this case, since the mixed gas mixed with the primary air and supplied into the burner upper plate 110 is rich in fuel than required air amount, rich combustion (RICH COMBUSTION) occurs in the first flame hole 112.

In addition, a portion of the mixed gas supplied into the burner upper plate 110 is ejected through the through hole 113 formed in the first side portion 118 and is supplied to the space between the first side portions 118 of the two burner bodies 100. do.

The mixed gas jetted through the through hole 113 is mixed with secondary air jetted upward through the secondary air jet hole 520, and the mixed gas is mixed in the second salt hole formed in the connection plate 600. Blown through 610 to form a flame.

In this case, since the mixed gas mixed with the secondary air is in a state in which the fuel is less than the required air amount, the lean combustion occurs in the second flame hole 610.

As described above, since the first flame hole 112 is formed on the inclined surface, the gas flow rate of the mixed gas jetted through the first flame hole 112 is reduced to prevent the lifting of the flame, thereby maintaining a stable combustion state. have.

In addition, since the RICH combustion occurs in the first flame hole 112 and the lean combustion occurs in the second flame hole 610, the amount of pollution generated in the conventional lean-rich burner is small, and flame stability The same has the good advantages in the present invention.

In addition, the flame formed in the second flame hole 610 affects the flame formed in the first flame hole 112 to further reduce the generation of CO.

That is, the amount of CO generated increases in the RICH COMBUSTION state. If the through hole 113 is not formed in the first side portion 118 and the connection plate 600 is not provided, the same structure as the conventional Bunsen burner is provided. In this case, the flame generated in the first flame hole 112 is used. In the secondary air is not supplied enough will cause a lot of CO.

Therefore, the present invention adopts a structure in which the lean-rich burner is coupled to the Bunsen burner by providing the through hole 113 and the connecting plate 600 in the first side portion 118, thereby causing air due to the flame formed in the second flame hole 610. Diffusion is increased and thereby the air supply to the flame side formed in the first flame hole 112 is fast, there is an advantage to reduce the generation of CO.

In addition, the connection plate 600 is located at the top of the first side portion 118 of the burner body 100 so that the distance between the first flame hole 112 and the second flame hole 610 is closer to the first flame hole 112. More air can be supplied to the generated flame, thereby reducing the effect of CO generation.

As described above, the present invention has been described using embodiments, but these embodiments are merely exemplary, and those skilled in the art may make various modifications and changes without departing from the spirit of the present invention. I can understand that.

1 is a side cross-sectional schematic view showing the configuration of a burner according to the present invention;

Figure 2 is a perspective view showing a combined state of the burner body and the connection plate according to the present invention,

Figure 3 is an exploded perspective view of the burner body and the connecting plate shown in Figure 2,

4 is a schematic view showing an operating state of the burner of the present invention;

5 is a schematic view showing a state in which the mixed gas is supplied through the nozzle portion and the venturi hole of the present invention,

Figure 6 is a schematic diagram showing a state in which rich combustion and lean combustion occurs in the burner of the present invention.

Explanation of symbols on the main parts of the drawings

10: casing portion 20: fan

30: nozzle part 100: burner body

110: burner top 112: first flame hole

113: through 116: first inclined part

118: first side portion 120: burner bottom plate

122: second inclined portion 128: second side portion

200: Venturi plate 210: Venturi hole

400: guide plate 500: secondary air diffusion plate

600: connecting plate 610: second flame hole

Claims (3)

  1. A venturi plate having a venturi hole formed so that a mixed gas of primary air, which is a part of air supplied from a fan, and fuel injected from a nozzle unit is introduced, a guide plate for guiding the introduced mixed gas upwards, and the mixed gas A plurality of burners including an inclined portion having a plurality of first flame holes for injecting the gas inclined with respect to the vertical direction, and a side portion having a plurality of through holes extending downward from a lower portion of the inclined portion to allow a portion of the mixed gas to pass; main body;
    A plurality of side ends are respectively connected to the plurality of burner body side parts, a plurality of lean combustion by mixing the mixture gas passed through the through hole and the secondary air supplied along the outer surface of the burner body of the air introduced by the fan is mixed A connection plate having a second flame hole formed therein;
    Bunsen burner using a lean-rich combustion method comprising a.
  2. The Bunsen burner using a lean-rich combustion method according to claim 1, wherein the connection plate is coupled to a top end of the side of the burner body.
  3. The burner body of claim 1, wherein the burner body includes: a first horizontal portion formed in a planar shape having a predetermined width at an upper end portion thereof, and a first inclined portion extending downwardly from the first horizontal portion to form a first flame hole; A burner upper plate extending from a first inclined portion and having a first side portion formed with the through hole; Bunsen burner using a lean-rich combustion method, characterized in that consisting of;
KR1020080004823A 2008-01-16 2008-01-16 Bunsen burner using lean rich combustion type KR100883796B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080004823A KR100883796B1 (en) 2008-01-16 2008-01-16 Bunsen burner using lean rich combustion type

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
KR1020080004823A KR100883796B1 (en) 2008-01-16 2008-01-16 Bunsen burner using lean rich combustion type
EP20080870721 EP2232140A2 (en) 2008-01-16 2008-11-24 Bunsen burner using lean-rich combustion type
US12/812,755 US20110053105A1 (en) 2008-01-16 2008-11-24 Bunsen burner using lean-rich combustion type
CN2008801247983A CN101910725B (en) 2008-01-16 2008-11-24 Bunsen burner using lean-rich combustion type
PCT/KR2008/006919 WO2009091115A2 (en) 2008-01-16 2008-11-24 Bunsen burner using lean-rich combustion type

Publications (1)

Publication Number Publication Date
KR100883796B1 true KR100883796B1 (en) 2009-02-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020080004823A KR100883796B1 (en) 2008-01-16 2008-01-16 Bunsen burner using lean rich combustion type

Country Status (5)

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US (1) US20110053105A1 (en)
EP (1) EP2232140A2 (en)
KR (1) KR100883796B1 (en)
CN (1) CN101910725B (en)
WO (1) WO2009091115A2 (en)

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KR101025655B1 (en) 2009-07-22 2011-03-30 주식회사 경동나비엔 Lean-rich burner
WO2012161428A3 (en) * 2011-05-23 2013-01-17 주식회사 경동나비엔 Gas burner system

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JP2011252671A (en) * 2010-06-03 2011-12-15 Rinnai Corp Combustion apparatus
US8827693B2 (en) 2011-10-17 2014-09-09 Rinnai Corporation Totally aerated combustion burner
EP2584260B1 (en) * 2011-10-18 2017-03-08 Rinnai Corporation Totally aerated combustion burner
JP2014159940A (en) * 2013-01-23 2014-09-04 World Seiki:Kk Gas burner device, food kiln including the same, burning method of food, and burning temperature control method of food kiln
US9739483B2 (en) * 2013-09-26 2017-08-22 Rheem Manufacturing Company Fuel/air mixture and combustion apparatus and associated methods for use in a fuel-fired heating apparatus
WO2015192143A1 (en) * 2014-06-13 2015-12-17 Integrated Energy LLC Systems, apparatus, and methods for treating waste materials

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Publication number Priority date Publication date Assignee Title
KR101025655B1 (en) 2009-07-22 2011-03-30 주식회사 경동나비엔 Lean-rich burner
WO2011010867A3 (en) * 2009-07-22 2011-04-21 주식회사 경동나비엔 Lean-rich burner
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WO2012161428A3 (en) * 2011-05-23 2013-01-17 주식회사 경동나비엔 Gas burner system

Also Published As

Publication number Publication date
WO2009091115A2 (en) 2009-07-23
EP2232140A2 (en) 2010-09-29
CN101910725B (en) 2012-06-13
WO2009091115A3 (en) 2009-09-03
CN101910725A (en) 2010-12-08
US20110053105A1 (en) 2011-03-03

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