WO2013085156A1 - Dispositif de combustion - Google Patents

Dispositif de combustion Download PDF

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Publication number
WO2013085156A1
WO2013085156A1 PCT/KR2012/009560 KR2012009560W WO2013085156A1 WO 2013085156 A1 WO2013085156 A1 WO 2013085156A1 KR 2012009560 W KR2012009560 W KR 2012009560W WO 2013085156 A1 WO2013085156 A1 WO 2013085156A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
burner
passage
combustion chamber
connecting member
Prior art date
Application number
PCT/KR2012/009560
Other languages
English (en)
Korean (ko)
Inventor
민태식
Original Assignee
주식회사 경동나비엔
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 주식회사 경동나비엔 filed Critical 주식회사 경동나비엔
Publication of WO2013085156A1 publication Critical patent/WO2013085156A1/fr

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    • 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
    • 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
    • F23D14/62—Mixing devices; Mixing tubes
    • 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 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/02—Disposition of air supply not passing through burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L1/00—Passages or apertures for delivering primary air for combustion 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L5/00—Blast-producing apparatus before the fire
    • F23L5/02—Arrangements of fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • F23M5/085—Cooling thereof; Tube walls using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/007—Mixing tubes, air supply regulation

Definitions

  • the present invention relates to a combustion apparatus, and more particularly, to a method for cooling a combustion chamber without using a heat insulating material by using a part of air supplied from a blower for cooling the combustion chamber, To a combustion device.
  • a combustion apparatus is provided in a heating apparatus that uses water for heating by using heat of combustion generated by combustion of fuel and circulates heated water along a pipe to be used for indoor heating or hot water.
  • Such a combustion apparatus is provided with a burner for burning fuel gas to generate high-temperature thermal energy and a combustion chamber for burning the mixer by the flame generated in the burner.
  • a conventionally used structure can be classified into a dry type using a heat insulating material on the inner wall of the combustion chamber housing and a wet type having a heating water pipe wound on the outer wall of the combustion chamber housing have.
  • FIG. 1 is a cross-sectional view showing a conventional dry combustion chamber cooling method.
  • a burner 11 is disposed at the center of the combustion chamber 10 for mixing and combusting the introduced gas and air.
  • the outer wall of the combustion chamber 10 is formed of a combustion chamber housing 12, A heat insulating material 13 is attached.
  • the heat insulating material 13 prevents the combustion chamber from being discharged to the outside through the combustion chamber housing 12. [ Also, the heat insulating material 13 prevents the combustion chamber housing 12 from being corroded due to the high temperature combustion chamber.
  • Such a combustion chamber cooling apparatus has a simple structure, but has a problem in that the cost of manufacturing the combustion chamber increases due to the use of the heat insulating material, and the cooling effect of the combustion chamber is not large even when the heat insulating material is used.
  • FIG. 2 is a cross-sectional view showing a conventional wet combustion chamber cooling method.
  • a heating water pipe 23 through which the heating water flows is wound around the side surface of the combustion chamber 20 in a state of being in contact with the outer periphery of the combustion chamber housing 22. [ Some of the heat is absorbed into the heating water circulating in the heating water pipe 23 in the course of the high temperature heat generated in the combustion chamber 20 being radiated to the outside of the combustion chamber 20. [
  • the heating water circulating through the heating water pipe 23 absorbs heat and flows into the heat exchanger (not shown) in a preheated state, the heat efficiency of the heat exchanger can be improved There are advantages.
  • the thermal efficiency is higher than that of the dry type, but the structure is complicated, and condensed water may be generated on the inner wall of the combustion chamber 20.
  • a condensed water-resistant material for example, stainless steel.
  • the generation of nitrogen oxides (NOx) can be reduced.
  • the dew point temperature is high and condensed water may be generated. If such condensed water is generated in a general water heater, it may cause problems such as corrosion.
  • a gas inlet port through which the gas flows, an air flow passage through which the air is supplied from the blower, and a structure in which the gas and the air are mixed are formed between the burner and the blower, so that the structure is complicated.
  • the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for cooling a combustion chamber without using a heat insulating material, And to provide a combustion device capable of realizing the above-mentioned advantages.
  • the present invention provides a combustion apparatus comprising: a blower (100) for supplying air; a burner (300) for burning a mixture of the air and the gas; And a heat exchanger (500) for exchanging heat with water inside the burner (300), wherein the burner (300) comprises a central portion located at the center of the burner and a peripheral portion surrounding the central portion; At the center of the burner 300, the mixer is burned and only the air is blown out at the periphery of the burner; A first air passage connecting member 210 having a first air passage 210a connected to the center portion and a second air passage 225 connected to the peripheral portion are provided between the burner 300 and the blower 100, And a second flow path connecting member 220 having a gas inlet 223 through which the gas supplied to the first air path 210a flows.
  • the flow path connecting portion composed of the first flow path connecting member and the second flow path connecting member is provided between the burner and the blower, the flow path structure of gas and air is simplified, have.
  • a part of the air supplied from the blower passes through the space between the outer wall of the combustion chamber and the inner wall of the combustion chamber to cool the combustion chamber to be supplied to the combustion chamber, and a part of the air is blown out to the inner side of the inner wall of the combustion chamber.
  • Structure can be implemented.
  • the premixed burner it is possible to reduce the generation of NOx while supplying excess air to the exhaust gas, thereby reducing the dew point temperature and preventing the generation of condensed water.
  • the air supplied from the blower is separated into the burner and the combustion chamber, and the air is transferred, thereby reducing the load on the blower.
  • 1 is a cross-sectional view showing a conventional dry combustion chamber cooling method
  • FIG. 2 is a cross-sectional view showing a conventional wet combustion chamber cooling method
  • FIG 3 is an external perspective view showing a combustion apparatus according to the present invention.
  • Fig. 4 is an exploded perspective view of the combustion apparatus shown in Fig. 3
  • FIG. 5 is a cross-sectional view taken along line A-A of the combustion apparatus shown in Fig. 3
  • FIG. 6 is a cross-sectional view taken along line B-B of the combustion apparatus shown in Fig. 3
  • FIG. 7 is a perspective view showing a cross-sectional shape in a state where the first flow path connecting member and the second flow path connecting member are engaged;
  • FIG. 8 is a perspective view showing a cross-sectional shape of the first passage connecting member
  • FIG. 9 is a perspective view showing an outer shape of the second flow path connecting member
  • blower 200 is a blower 100: blower 200:
  • first passage connecting member 210a first air passage
  • flange 222 body
  • combustion chamber 410 combustion chamber inner wall
  • Cooling channel 500 Heat exchanger
  • FIG. 3 is an external perspective view showing a combustion apparatus according to the present invention
  • FIG. 4 is an exploded perspective view of the combustion apparatus shown in FIG.
  • a combustion apparatus (1) includes a blower (100) for supplying air, a flow path connection part (200) for connecting a flow path for gas flow and a flow path for transferring the air, A burner 300, a combustion chamber 400 in which combustion is performed by the flame formed in the burner 300, and a heat exchanger 500 in which heat is exchanged between the combustion gas generated in the combustion chamber 400 and water.
  • the blower 100 is for supplying air to the burner 300 by sucking outside air, and is the same as the structure that is conventionally used.
  • the flow path connection part 200 is connected to an outlet end of the blower 100.
  • the flow path connection part 200 includes a first flow path connection part 210a in which a first air path 210a through which a part of the air supplied from the blower 100 and a gas supplied from a gas supply part (not shown) And a second air passage 225 (see FIG. 5) in which the first air passage connecting member 210 is inserted and a second air passage 225 (see FIG.
  • the burner 300 includes a burner chamber 310 in which air and gas are mixed in an internal mixing space 311 (see FIG. 5), and a burner chamber 310 disposed above the burner chamber 310 to generate a flame (320).
  • the burner chamber 310 constitutes the body of the burner, and air and gas are mixed to provide an air flow path through which the air moves.
  • the combustion chamber 400 includes combustion chamber outer walls 420a and 420b that form cooling passages 430 (see FIG. 5) between the combustion chamber inner walls 410a and 410b and the combustion chamber inner walls 410a and 410b.
  • the cooling passage 430 absorbs high-temperature heat generated in the space inside the combustion chamber while passing a part of the air supplied from the blower 100.
  • the heat exchanger 500 provided at the upper side of the combustion chamber 400 is heat exchanged by a high temperature combustion gas and the combustion gas having heat exchanged in the heat exchanger 500 is exhausted through an exhaust hood .
  • FIG. 5 is a cross-sectional view taken along line AA of Fig. 3
  • Fig. 6 is a cross-sectional view taken along line BB of Fig. 3
  • Fig. 7 is a perspective view showing a cross-
  • FIG. 8 is a perspective view showing a cross-sectional shape of the first passage connecting member
  • FIG. 9 is a perspective view showing an outer shape of the second passage connecting member.
  • the first flow path connecting member 210 has the air inlet 211 and the passages 212 and 212 so that the internal space of the first flow path connecting member 210 forms the first air path 210a and is inserted into the second flow path connecting member 220. [ And a flange 213.
  • the air inlet 211 is inserted into the second flow channel connecting member 220 so as to face the blower 100 so that the sectional area of the inlet side of the air inlet 211 is larger and the cross- .
  • a hermetic member (not shown) for maintaining airtightness is interposed between the outer circumferential surface of the air inlet 211 and the inner circumferential surface of the second flow channel connecting member 220.
  • a groove 211a into which the hermetic member is inserted is formed.
  • An axial pipe portion 211b is formed on the upper side of the air inlet 211 where the groove 211a is formed, so that the sectional area is reduced.
  • the passage portion 212 has an enlarged shape in which the diameter increases from the inlet side through which the air passes to the outlet side.
  • a plurality of communication holes 214 are formed along the circumference at the boundary between the passage portion 212 and the air inlet 211.
  • the communication hole 214 is for introducing the gas introduced from the gas inlet 223 into the first air passage 210a which is an internal space of the passage portion 212. [ Since the communication hole 214 performs a venturi function, mixing of the gas introduced through the communication hole 214 and air passing through the inside of the passageway 212 is promoted.
  • the communicating hole 214 is formed such that the diameter of the shaft portion 211b is smaller than the lower end 212a of the passage portion 212 and the inner surface of the lower end portion 212a of the passage portion 212 is concave, Thereby forming a depression 215 to be convex.
  • the depressed portion 215 is formed to have a predetermined area on the inner peripheral surface of the passage portion 212. Due to such a constitution, the gas flowing into the passage portion 212 through the communication hole 214 becomes the same as the air flowing through the first air passage 210a, so that the gas can flow easily have.
  • a flange 223 is formed at the air outlet side end of the passage portion 212 to be coupled to the upper end of the second flow path connection member 220 by a fastening member.
  • the second channel connecting member 220 is provided with a body 222 having a substantially rectangular cross section and a space 220a passing through the center of the body 222 in the longitudinal direction is formed, The first channel connecting member 210 is inserted.
  • a gas inflow port 223 through which the gas flows is formed on the side of the body 222 and a plurality of second air passages 225 are formed along the longitudinal direction of the body 222.
  • the second air passage 225 is a channel through which some air from the air supplied from the blower 100 passes and is formed as a channel passing through the bottom surface of the flange 221 along the longitudinal direction of the body 222, So that the air flows into the air inlet 225a, passes through the air passage 225b, and is discharged to the air outlet 225c.
  • the second air passage 225 is located at four corners along the center space 220a and the air inlet 225a is substantially triangular in cross section.
  • the air outlet 225c is formed laterally at an upper end of the air passage 225b so as to eject air in a lateral direction of the body 222.
  • FIG. 5 The flow path connection structure inside the combustion apparatus will be described with reference to FIGS. 5 and 6.
  • FIG. 5 The flow path connection structure inside the combustion apparatus will be described with reference to FIGS. 5 and 6.
  • the thus formed mixer is introduced into the mixing space 311 of the burner 300 and then supplied to the burner salt flame 320 serving as the central portion of the burner 300 to be burned.
  • the rest of the air supplied from the blower 100 flows through the second air passage 225 formed in the body 222 of the second flow passage connecting member 220 between the combustion chamber outer wall 420 and the burner chamber 310 And then flows into the formed air connecting passage 350.
  • the air introduced into the air connecting passage 350 is formed on the upper side thereof and is blown out to the upper side through an air blowing port 370 which is a peripheral portion of the burner 300.
  • the mixer is burned at the central portion of the burner 300, and only air is blown out at the periphery of the burner 300.
  • the air blowing port 370 is formed between the edge of the burner flame 320 and the lower end of the combustion chamber inner wall 410, And a second air blowing port 370b connected thereto.
  • the air ejected from the first air ejection port 370a is conveyed to the cooling passage 430 and the air ejected from the second air ejection port 370b is ejected upward along the inner surface of the combustion chamber inner wall 410. [ Therefore, the combustion heat of the high temperature due to the combustion in the burner salt flame 320 is prevented from being transmitted to the combustion chamber inner wall 410.
  • a plurality of air outlets 411 are formed in the inner wall 410 of the combustion chamber. Therefore, the air supplied through the cooling passage 430 is blown into the inner space of the combustion chamber through the air outlet 411.
  • the temperature of the inner wall 410 of the combustion chamber is prevented from being transferred to the outer wall 420 of the combustion chamber by the cooling passage 430 while the inner surface of the inner wall 410 of the combustion chamber 410 is blown out through the second air-
  • the temperature of the air flowing upward through the air inlet 411 of the combustion chamber inner wall 410 is mixed to prevent an increase in temperature.
  • the high temperature inside the combustion chamber is blocked from being transferred to the combustion chamber inner wall 410 by the air rising along the inner surface of the combustion chamber inner wall 410, and the temperature of the combustion chamber inner wall 410 is reduced by the cooling flow passage 430 It is not necessary to use a heat insulating material to cool the combustion chamber because it is blocked from being transmitted to the combustion chamber outer wall 420.
  • the air blown from the air blowing port 411 of the combustion chamber inner wall 410 to the air flowing upward along the inner surface of the combustion chamber inner wall 410 can be mixed to further improve the combustion chamber cooling effect.
  • the load acting on the blower 100 can be reduced have.
  • the air supplied to the burner salt flask 320 is involved in combustion, but air and gas are supplied so that the air ejected from the air blowing port 370 is not involved in combustion.
  • the mixer is burned at a rate at which complete combustion is performed, so that the burner 300 is composed of a premixed burner. Since the air injected from the air blowing port 370 is mixed with the combustion gas, the combustion gas passing through the heat exchanger 500 has a high excess air ratio and a high dew point temperature The generation of condensed water can be prevented.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

L'objectif de la présente invention est de réaliser un dispositif de combustion qui puisse refroidir une chambre de combustion sans utiliser de matériau isolant, en empêchant la génération d'eau condensée lors de l'utilisation d'un brûleur à prémélange, et dans lequel une structure de mise en communication de trajets de circulation entre un gaz et l'air peut être simplifiée. La solution selon la présente invention consiste en un dispositif de combustion comprenant : une soufflante destinée à une alimentation en air ; un brûleur destiné à la combustion d'un mélange de l'air et du gaz ; et un échangeur de chaleur dans lequel l'échange de chaleur avec de l'eau intérieure se fait au moyen de la chaleur de combustion du brûleur, le brûleur comprenant une partie centrale qui est placée au centre du brûleur et une partie périphérique qui enveloppe la partie centrale. Le mélange d'air est brûlé dans la partie centrale du brûleur, seul de l'air étant expulsé de la partie périphérique du brûleur, et une partie de mise en communication de trajets de circulation est réalisée entre le brûleur et la soufflante. La partie de mise en communication de trajets de circulation comprend un premier élément de mise en communication de trajets de circulation pourvu d'un premier passage d'air intérieur qui communique avec la partie centrale, et un second élément de mise en communication de trajets de circulation pourvu d'une partie d'admission de gaz dans laquelle du gaz, fourni à un second passage d'air qui communique avec la partie périphérique et le premier passage d'air, est introduit.
PCT/KR2012/009560 2011-12-05 2012-11-13 Dispositif de combustion WO2013085156A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2011-0128873 2011-12-05
KR1020110128873A KR101303126B1 (ko) 2011-12-05 2011-12-05 연소장치

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WO2013085156A1 true WO2013085156A1 (fr) 2013-06-13

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WO (1) WO2013085156A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111442522A (zh) * 2020-04-02 2020-07-24 宁波方太厨具有限公司 燃气热水器
CN111442523A (zh) * 2020-04-02 2020-07-24 宁波方太厨具有限公司 燃气热水器
CN112833534A (zh) * 2021-01-08 2021-05-25 宁波方太厨具有限公司 燃气热水器
EP4050282A4 (fr) * 2019-10-31 2022-12-21 Wuhu Midea Kitchen and Bath Appliances Mfg. Co., Ltd. Dispositif à gaz

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101596715B1 (ko) * 2014-11-25 2016-02-23 주식회사 경동나비엔 연소실 냉각 구조를 갖는 연소장치
US20230104586A1 (en) * 2021-10-06 2023-04-06 Beckett Thermal Solutions Hydrogen mixing system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0252910A (ja) * 1988-08-17 1990-02-22 Matsushita Electric Ind Co Ltd 給湯機
JP2950196B2 (ja) * 1995-04-05 1999-09-20 三浦工業株式会社 予混合式ガスバーナ
JP2009198118A (ja) * 2008-02-22 2009-09-03 Mitsubishi Heavy Ind Ltd ガス燃焼装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06147427A (ja) * 1992-11-09 1994-05-27 Matsushita Electric Ind Co Ltd 給湯用燃焼器
KR0148092B1 (ko) * 1995-02-15 1998-10-01 손영목 가스보일러의 고부하 가스연료연소용 초소형 예혼합장치

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0252910A (ja) * 1988-08-17 1990-02-22 Matsushita Electric Ind Co Ltd 給湯機
JP2950196B2 (ja) * 1995-04-05 1999-09-20 三浦工業株式会社 予混合式ガスバーナ
JP2009198118A (ja) * 2008-02-22 2009-09-03 Mitsubishi Heavy Ind Ltd ガス燃焼装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4050282A4 (fr) * 2019-10-31 2022-12-21 Wuhu Midea Kitchen and Bath Appliances Mfg. Co., Ltd. Dispositif à gaz
CN111442522A (zh) * 2020-04-02 2020-07-24 宁波方太厨具有限公司 燃气热水器
CN111442523A (zh) * 2020-04-02 2020-07-24 宁波方太厨具有限公司 燃气热水器
CN112833534A (zh) * 2021-01-08 2021-05-25 宁波方太厨具有限公司 燃气热水器

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Publication number Publication date
KR101303126B1 (ko) 2013-09-09
KR20130062554A (ko) 2013-06-13

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