WO2016085237A1 - 과농 희박 연소장치 - Google Patents
과농 희박 연소장치 Download PDFInfo
- Publication number
- WO2016085237A1 WO2016085237A1 PCT/KR2015/012661 KR2015012661W WO2016085237A1 WO 2016085237 A1 WO2016085237 A1 WO 2016085237A1 KR 2015012661 W KR2015012661 W KR 2015012661W WO 2016085237 A1 WO2016085237 A1 WO 2016085237A1
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- Prior art keywords
- plate
- air
- mixer
- flow path
- lean
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Classifications
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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
- 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
- F23D14/08—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 axial outlets at the burner head
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- 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
- F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
- F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
- F23C6/042—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with fuel supply in stages
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- 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
- F23C99/00—Subject-matter not provided for in other groups of this subclass
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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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
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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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/74—Preventing flame lift-off
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
Definitions
- the present invention relates to a super-lean lean combustor, and more particularly, by overcondensing and lean-combustion in a pair of neighboring salt holes simultaneously to reduce the amount of NOx generated while uniformly supplying fuel and air for combustion to the salt holes.
- the present invention relates to a superrich lean burner.
- 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.
- diffused combustion for separately supplying fuel and air
- premixed combustion and diffused combustion are mixed.
- 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.
- Conventional combustion gas appliances such as domestic gas boilers mainly employ Bunsen burners because of their advantages such as low flame stability and low risk of backfire.
- the Bunsen burner has a long burn flame and high flame temperature, and the amount of air required for combustion requires a lot of excess air compared to the theoretical air amount, which leads to high heat loss and high emissions of NOx and CO. It had limitations in maximizing the efficiency of equipment and reducing pollutants.
- Rich-lean combustion is known as one of the combustion methods to reduce the amount of NOx generated.
- Superrich-lean combustion avoids the condition that the excess air ratio of fuel and air having the highest flame temperature is 1 in premixed combustion, and simultaneously forms the fuel rich with low excess air ratio and the fuel lean with high excess air ratio.
- Republic of Korea Patent No. 965277 is disclosed as an example of a combustion apparatus of such a concentrated-lean combustion method.
- the combustion apparatus disclosed in Korean Patent No.965277 is provided with nozzles for supplying a supercondensation mixer and a lean mixer, respectively, so that the structure is complicated by many components, and a part of the air supplied from the blower is provided through a hole formed in the diaphragm. There is a problem that the supply of air is not constant because it is to be supplied.
- the present invention has been made to solve the above-mentioned problems, it is possible to provide a concentrated mixer and a lean mixer, respectively, with only one nozzle, and to provide an excessively lean burn apparatus that can uniformly supply the air supplied from the blower. There is this.
- Still another object of the present invention is to provide a super-lean lean combustor capable of realizing a desired mixer by preventing leakage from occurring at portions where the plates of the burner body are blocked by contact with each other to block the flow of the mixer. have.
- Still another object of the present invention is to provide a super-lean lean burn apparatus capable of maintaining a constant spacing between components by a simple configuration in joining a plate constituting a burner body and a salt hole member.
- the above-described concentrated lean burn apparatus of the present invention for solving the above problems is provided to face each other, the first plate 110 and the second plate through which the concentrated mixture flows through the concentrated mixture base passages 173-1 and 173-2 therebetween. 120, a third plate 130 provided to allow the lean mixer to flow through the lean mixing channel 176 formed between the second plate 120 and the first salt ball member 140 for burning the over-concentrator.
- a second flame ball member 150 for burning the lean mixer between the first plate 110 and the second plate 120, a part of the air supplied from the blower 300 and the nozzle ( Mixer inlet 161 through which the fuel gas injected from 710 is introduced, and the mixed gas flow path introduction unit 171 and the mixed base oil flow path for allowing the over-concentrated mixture introduced through the mixer inlet 161 to flow into the super-concentrated mixing channel flow path 173.
- Part 172 supplied from the blower 300 An air inlet 162 through which the rest of the air is introduced, and an air inlet 174 through which air introduced through the air inlet 162 flows is formed;
- the second plate 120 a plurality of air through-holes so that the air of the air flow path introduction portion 174 is ejected to the air flow path 175 formed between the second plate 120 and the third plate 130 (121), a plurality of distribution holes 122 are formed so that a portion of the mixer that has passed through the mixer gas channel diffusion unit 172 is ejected into the lean mixture gas channel 176;
- the over-concentrated mixing channel 173-1 includes a plurality of first over-mixing base passages 173-1 located at an upper portion of the dispensing hole 122 and spaced apart from each other by a predetermined interval, and the first condensing mixing base passage 173-1.
- Closing portions A are formed at both sides of the first super-concentration mixing channel 173-1 to block the flow of the mixer, and the blocking portions A have a flat plate-shaped first plate 110 and a second plate ( Part of the 120 is deformed to form the obstruction protrusions 117 and 127.
- the obstruction protrusions 117 and 127 protrude from the obstruction protrusion 117 having a shape protruding from one side of the first plate 110 and one side of the second plate 120 to the first plate 110. It may be made of the obstruction protrusion 127 of the shape that is inserted into the obstruction protrusion 117 of the.
- the first plate 110, the second plate 220 and the first flame member 140 is formed of one thin plate It may be bent to form a plurality of first flame holes 141 through the upper bent surface.
- the air flow path introduction portion 174 extends in a horizontal direction from the air inlet 162 on one side, and the other side is formed to block the flow of air, and the air through hole 121 is a length direction of the air flow path introduction portion 174.
- the plurality may be spaced apart from each other.
- the second salt hole member 150 has a plurality of upper portions in which a plurality of salt hole plates 152 are spaced apart from each other to form a second salt hole 151, and a surface contacting the third plate 130 is concave.
- a plurality of lower grooves 154 recessed spaced downward from the groove 153 and the upper groove 153;
- a plurality of upper embossing 131 protruding to be inserted into the upper groove 153 and a plurality of lower embossing 132 protruding to be inserted into the lower groove 154 are formed in the third plate 130;
- the second flame hole 150 is interposed between the second plate 120 and the third plate 130, the upper groove 153 and the upper embossing 131, the lower groove 154 and the lower embossing 132 may be fixed by the insertion coupling.
- the upper groove 153 may be formed in a shape that is opened in an upward direction and closed in a downward direction
- the lower groove 154 may be formed in a shape that is closed in an upward direction and opened in a downward direction.
- the third plate 130 may be formed with a concave portion 133 formed concave in the direction of the distribution hole 122 at a position corresponding to the distribution hole 122.
- At least one distributed embossing may be formed in the third plate 130 to disperse the air ejected through the air through hole 121 in a horizontal direction under the concave portion 133.
- the supergas and lean burn can be realized by the fuel gas supplied from one nozzle, so that the number of components can be simplified.
- first plate, the second plate, and the first flame member may be integrally formed by bending one connected plate, thereby simplifying the manufacturing process and reducing the manufacturing cost.
- grooves and the embossing may be coupled between the plurality of plates constituting the burner body and the salt hole member so that the spacing between the components may be uniformly coupled by a simple configuration.
- the mixing of the mixer is made uniform by forming the recess and the dispersion embossing on the third plate.
- FIG. 1 is a perspective view showing a state in which the combustion apparatus of the present invention is coupled
- FIG 2 is a perspective view showing a state in which the combustion device of Figure 1 disassembled
- FIG. 3 is a perspective view illustrating a burner assembly and a gas nozzle assembly disassembled in the combustion apparatus of FIG. 1;
- Figure 4 is a perspective view showing a state in which the burner assembly and the gas nozzle assembly in the combustion device of Figure 1
- FIG. 5 is a perspective view showing a burner body of the present invention
- FIG. 6 is a perspective view illustrating a state in which the burner body of FIG. 5 is disassembled.
- 7 (a) and 7 (b) are cross-sectional views taken along line A-A 'and B-B' of FIG.
- FIG. 8 is a view showing a process in which fuel gas and air flow into the burner body in the combustion device of FIG.
- FIG. 9 is a view illustrating a longitudinal cross-sectional structure in a state where the first plate and the second plate are in contact with each other;
- FIG. 10 is a view showing a cross-sectional structure in a state where the first plate and the second plate are in contact
- 11 (a) and 11 (b) are perspective views showing a state in which the first and second flame hole members are coupled to the first, second and third plates in the combustion apparatus of FIG.
- combustion apparatus 100 burner body
- burner base 211 first inlet hole
- bottom plate 220 burner cover
- blower 400 heat exchanger assembly
- gas nozzle assembly 710 nozzle
- FIG. 1 is a perspective view showing a state in which the combustion apparatus of the present invention is coupled
- FIG. 2 is a perspective view showing a disassembled state of the combustion apparatus of FIG. 1
- the burner 1 of the present invention comprises a plurality of burner bodies 100 and a burner including a burner base 210 and a burner cover 220 for supporting the burner body 100 in front and rear of the burner body 100.
- Heat exchanger assembly 400 the burner assembly 200 is heat-exchanged, the combustion chamber 300 is coupled to the bottom is coupled to the blower 300 and provides a combustion space in which combustion occurs in the upper space of the burner assembly 200 Body 500, cover assembly 600 coupled to the open one side of the combustion chamber body 500, the nozzle 710 for supplying fuel gas to the burner body 100 is provided with the cover assembly 600 To the gas nozzle assembly 700 coupled to the lower side of the It is done.
- the burner body 100 is provided with a plurality of adjacent, the flame hole member 140, 150 (FIG. 5) for generating a flame by burning the mixer flowing in the inner space is provided at the upper end.
- Burner base 210 has a cross-sectional shape of approximately 'b' shape, the side plate 213 for supporting the front edge of the burner body 100 and the bottom plate 214 for supporting the lower end of the burner body 100. ), And the burner cover 220 is coupled to and supported by the rear edge of the burner body 100.
- the side plate 213 is formed at a position corresponding to the mixer inlet 161 of the burner body 100, and a portion of the fuel gas injected from the nozzle 710 and the air supplied from the blower 300 are mixed and introduced.
- the first inlet hole 211 is formed in a plurality spaced apart in the horizontal direction so as to correspond to the air inlet 162 of the burner body 100 so that the rest of the air supplied from the blower 300 flows in
- a plurality of second inflow holes 212 are formed spaced apart in the horizontal direction.
- the gas nozzle assembly 700 is positioned to cover the first inlet hole 211 and the second inlet hole 212 of the side plate 213, and has the same number of nozzles as the plurality of first inlet holes 211. 710 are provided spaced apart in the horizontal direction.
- the blower 300 is coupled to the bottom of the combustion chamber body 500, the air supplied from the blower 300 to the lower space of the bottom surface of the burner base 210 of the burner assembly 200 through the blower outlet 310 Inflow.
- FIG. 5 is a perspective view showing a burner body of the present invention
- Figure 6 is a perspective view showing a state in which the burner body of Figure 5 is exploded
- Figure 7 (a) is A-A 'and B-B' of FIG. 8 is a cross-sectional view illustrating a process in which fuel gas and air flow into the burner main body in the combustion apparatus of FIG. 1
- FIG. 9 is a view illustrating a longitudinal cross-sectional structure of a state in which a first plate and a second plate are in contact with each other
- FIG. 10 is a cross-sectional view showing a structure in a state where the first plate and the second plate are in contact with each other.
- FIG. 11 (a) and 11 (b) show the first, second flame hole members of the combustion apparatus of FIG. A perspective view showing a state coupled to the three plates and a perspective view showing a disassembled state of the second flame member
- Figure 12 is a view showing the flow of air flowing through the space between the second plate and the third plate, 5 to FIG. Configuration of Burner Body and Flow Path of Mixer with Reference to 12 It will be described.
- the burner body 100 is provided to face each other, and the lean mixer is disposed through a space between the first plate 110 and the second plate 120 and the second plate 120 through which the super-concentrator flows through the space therebetween. It is provided with a third plate 130 provided to flow, the first flame ball member 140 for burning the over-concentrator, and the second flame ball member 150 for burning the lean mixer.
- the first plate 110 and the second plate 120 is formed so that the mixer and the flow path portion through which the air flows outward and are not in contact with each other, and the mixer and the portion where the air does not flow are formed in contact with each other so as to be blocked.
- the edges are coupled to each other, and the first flame hole 140 is integrally formed with the first plate 110 and the second plate 120 at an upper end thereof.
- the first plate 110, the second plate 120 and the first flame member 140 is connected to one thin plate It is bent into a shape to form a plurality of first flame holes 141 through the upper bent surface, the side and the bottom edge of the first plate 110 except for the mixer inlet 161 and the air inlet 162 ) And the contact surface of the second plate 120 is closed.
- the first plate 110, the second plate 120, and the first flame member 140 are integrally formed with one connected thin plate, thereby simplifying the manufacturing process and reducing the manufacturing cost.
- a flow path formed between the first plate 110 and the second plate 120 and flowing with the over-concentrator is a mixer into which a portion of the fuel gas injected from the nozzle 710 and the air supplied from the blower 300 are introduced.
- the inlet 161, the mixer flow path introduction portion 171 extending in the horizontal direction to flow the super-concentrator introduced through the mixer inlet 161, and extends upward from the mixer flow path introduction portion 171 to have a cross-sectional area upward.
- a mixed gas channel diffusion unit 172 which extends toward the direction and extends upwardly of the mixed gas channel diffusion unit 172 to supply a super-concentration mixer to the first flame hole 140 (173-1, 173-2).
- Some of the over-concentrators that have passed through the mixing channel flow path diffusion unit 172 may be formed of the second plate 120 and the first through a plurality of distribution holes 122 spaced apart at regular intervals in the width direction of the second plate 120. It is ejected to the space between the three plates 130.
- a flow path formed between the second plate 120 and the third plate 130 to form a lean mixer is formed at a lower side of the mixer inlet 161 to supply air supplied from the blower 300.
- the air inlet 162 through which the rest is introduced, the air flow path introduction unit 174 extending in a horizontal direction so that the air introduced through the air inlet 162 flows, and the air introduced into the air flow path introduction unit 174 A plurality of air through-hole 121 formed through the second plate 120 along the longitudinal direction of the air flow path introduction portion 174 to eject into the space between the second plate 120 and the third plate 130, the first An air flow path 175 formed as a space between the second plate 120 and the third plate 130 so that the air ejected through the air through hole 121 flows upward, and extends upwardly of the air flow path 175.
- the second flame ball member (150) It comprises a lean gas mixture flow pathway 176 to.
- the mixer inlet 161 and the air inlet 162 After flowing in the horizontal direction toward the) is dispersed through the mixer inlet 161 and the air inlet 162 is introduced into the burner body 100, the fuel gas injected from the nozzle 710 is the mixer inlet 161 After mixing with the air flowing through the mixed gas flow path introduction unit 171, the mixed gas flow path spreading unit 172, the first and the first mixed rich gas flow path (173-1), the second concentrated mixed gas flow path (173-2) and the first Concentrated combustion is made while being ejected through the first salt hole 141 of the salt hole member 140.
- the air introduced into the air flow path introduction unit 174 through the air inlet 162 is ejected through the air through-hole 121 to flow through the air flow path 175, which flows through the air flow path 175 Air is mixed with the mixer ejected through the plurality of distribution holes 122, and the lean mixer thus produced is ejected through the second flame hole 151 of the second flame hole member 150, thereby making lean combustion.
- the ratio in which the mixer flowing between the first plate 110 and the second plate 120 is divided into the super-concentration base passages 173-1 and 173-2 and the lean mixed base passage 176 is very high in determining combustion performance. Since it becomes an important factor, the cross-sectional area of the flow path through which the mixer flows is set in accordance with the distribution ratio of the mixer.
- the first mixture 110 or the lean mixer is set to the ratio of the first mixer. There is a problem that is not supplied to the salt hole member 140 or the second salt hole member 150.
- the first plate in order to implement the ratio of the mixers distributed through the over-concentration mixing channel (173-1, 173-2) and the lean mixing channel (176) located in the upper portion of the distribution hole 122 in the set ratio,
- the occlusion portion A and the flow path forming portion B are alternately formed at portions of the 110 and the second plate 120 facing each other, and the obstruction portions 117 and 127 are formed in the occlusion portion A.
- the mixer is prevented from leaking between the contact surfaces of the first plate 110 and the second plate 120.
- the obstruction protrusions 117 and 127 protrude by applying a deformation to the flat portions 116 and 126 of the first plate 110 and the second plate 120, and a second inside the obstruction protrusion 117 of the first plate 110.
- the thin plate is deformed into a shape in which the obstruction protrusion 127 of the plate 120 is inserted.
- a gap may occur, and a leakage of the mixer may occur between the gaps.
- a gap in which the mixer leaks is not formed by deforming the thin plate of the blockage portion (A). It was.
- the flow path forming portion B includes a first super-concentrated mixed flow path 173 between the flat plate-shaped flow path flat portion 115 which is not deformed as part of the first plate 110 and the flow path flat portion 115. It is made of a flow path projection (125) protruding the second plate 120 to form 1).
- the present invention can implement both the concentrated combustion and the lean combustion simultaneously with only one nozzle 710 without using two nozzles, thereby simplifying the structure of the combustion device.
- the air supplied through the blower outlet 310 is diffused along the space under the burner base 210 and then introduced into the air flow path introduction portion 174 through the air inlet 162, the air flow path introduction portion Since the air of 174 is ejected into the air passage 175 through the air through 121, the amount of air passing through the air inlet 162 and the air through 121 is limited to the air in each of the plurality of burner bodies 100. Is uniformly supplied, and the amount of air ejected through the plurality of air through holes 121 along the longitudinal direction of the air flow path introduction portion 174 becomes uniform, thereby providing air to the front and rear of the second flame hole member 150. The supply is made uniform. In this case, since the air supply amount is controlled only by adjusting the size of one air inlet 162, the design is improved.
- the super-concentration mixer and the lean mixer are supplied to the first salt hole member 140 and the second salt hole member 150 at a set ratio of the mixer to stabilize combustion. Can reduce the emission of pollutants.
- the ratio of the mixer supplied to the first flame ball member 140 with excessive combustion and the second flame ball member 150 with lean combustion is about 2: 8 so that many mixers as the second flame ball member 150 are provided. Since it is supplied, the flame formed at the salt hole surface of the second flame hole member 150 is also much larger than the flame formed at the first flame hole member 140.
- the third plate 130 is formed with a recess 133 concave in the direction of the dispensing hole 122 at a position corresponding to the dispensing hole 122.
- the distance between the plate 120 and the third plate 130 is narrowed at the portion where the distribution hole 122 is formed.
- the mixer supplied to the second flame member 150 is directed toward the third plate 130, and the concave portion 133 as described above. ) Is formed so that the gap between the second plate 120 and the third plate 130 is narrowed, the mixer is evenly supplied to the second flame hole member 150.
- the second salt hole member 150 may have a portion of the plurality of salt hole plates 152 spaced apart from each other to form a second flame hole 151, and may contact the third plate 130.
- a plurality of upper grooves 153 concave formed in the 150a and a plurality of lower grooves 154 formed concave spaced downward from the upper groove 153 is formed, the third plate 130 is the upper
- a plurality of upper embossing 131 protruding to be inserted into the groove 153 and lower embossing 132 protruding to be inserted into the lower groove 154 are formed.
- the upper groove 153 has a shape in which the upper direction is open and the lower direction is closed
- the lower groove 154 has a shape in which the upper direction is closed and the downward direction is open.
- the second flame hole 150 is interposed between the second plate 120 and the third plate 130, the upper embossing 131 is inserted into the upper groove 153, the lower groove ( The second embossing member 150 is fixedly coupled between the second plate 120 and the third plate 130 by inserting the lower embossing 132 into the 154.
- the upper groove 153 is open upward and the lower groove 154 is open downward to facilitate the assembly.
- the second salt hole member 150 and the second plate 120 and the third plate 130 are combined by a simple configuration to reduce the manufacturing cost, the second salt hole member 150 ) And the gap between the second plate 120 and the third plate 130 can be kept constant.
- the first scattering embossing 134 and the first plate 130 are formed in the third plate 130 to be concave in the direction of the second plate 120 below the recess 133.
- Two-dispersion embossing 135 is formed.
- the air blown out through the air through hole 121 is dispersed in the horizontal direction by the first dispersion embossing 134 and the second dispersion embossing 135 and then flows upward through the air flow path 175. , And evenly mixed with the mixer introduced through the distribution hole 122 in a predetermined ratio.
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- Combustion & Propulsion (AREA)
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Abstract
Description
Claims (8)
- 서로 대향되게 구비되어 그 사이의 과농혼합기유로(173-1,173-2)를 통해 과농혼합기가 흐르는 제1플레이트(110)와 제2플레이트(120), 상기 제2플레이트(120)와의 사이에 형성된 희박혼합기유로(176)를 통해 희박혼합기가 흐르도록 구비된 제3플레이트(130), 상기 과농혼합기를 연소시키는 제1염공부재(140), 상기 희박혼합기를 연소시키는 제2염공부재(150)를 구비하되,상기 제1플레이트(110)와 제2플레이트(120) 사이에는, 송풍기(300)로부터 공급된 공기 중 일부와 노즐(710)로부터 분사된 연료가스가 도입되는 혼합기유입구(161), 상기 혼합기유입구(161)를 통해 유입된 과농혼합기가 상기 과농혼합기유로(173)로 흐르도록 하는 혼합기유로도입부(171)와 혼합기유로확산부(172), 상기 송풍기(300)로부터 공급된 공기 중 나머지가 도입되는 공기유입구(162), 상기 공기유입구(162)를 통해 유입된 공기가 흐르는 공기유로도입부(174)가 형성되고;상기 제2플레이트(120)에는, 상기 공기유로도입부(174)의 공기가 상기 제2플레이트(120)와 제3플레이트(130) 사이에 형성된 공기유로(175)로 분출되도록 관통된 복수의 공기통공(121), 상기 혼합기유로확산부(172)를 통과한 혼합기의 일부가 상기 희박혼합기유로(176)로 분출되도록 관통된 복수의 분배구멍(122)이 형성되고;상기 과농혼합기유로(173-1)는, 상기 분배구멍(122)의 상부에 위치하되 일정 간격 이격된 복수의 제1과농혼합기유로(173-1)와, 상기 제1과농혼합기유로(173-1)와 상기 제1염공부재(140) 사이에 형성된 제2과농혼합기유로(173-2)로 이루어지고;상기 제1과농혼합기유로(173-1)의 양측에는 혼합기의 유동을 차단하는 폐색부(A)가 형성되고, 상기 폐색부(A)에는 평판 형상의 제1플레이트(110)와 제2플레이트(120)의 일부를 변형시켜 폐색돌출부(117,127)가 형성된 것으로 이루어진 과농 희박 연소장치
- 제1항에 있어서,상기 폐색돌출부(117,127)는, 상기 제1플레이트(110)의 일측면으로부터 돌출된 형상의 폐색돌출부(117)와, 상기 제2플레이트(120)의 일측면으로부터 돌출되어 상기 제1플레이트(110)의 폐색돌출부(117) 내부에 삽입되는 형상의 폐색돌출부(127)로 이루어진 것을 특징으로 하는 과농 희박 연소장치
- 제1항에 있어서,상기 공기유로도입부(174)는 일측의 상기 공기유입구(162)로부터 수평방향으로 연장되어 타측은 공기의 흐름이 막히도록 형성되고, 상기 공기통공(121)은 상기 공기유로도입부(174)의 길이방향을 따라 복수개가 이격되어 형성된 것을 특징으로 하는 과농 희박 연소장치
- 제1항에 있어서,상기 제2염공부재(150)는, 복수의 염공플레이트(152) 일부분이 서로 이격되어 제2염공(151)을 형성하고, 상기 제3플레이트(130)에 접하는 면이 오목하게 형성된 복수의 상부홈(153)과 상기 상부홈(153)으로부터 하측으로 이격되어 오목하게 형성된 복수의 하부홈(154)으로 이루어지고;상기 제3플레이트(130)에는 상기 상부홈(153)에 삽입되도록 돌출된 상부엠보싱(131)과 상기 하부홈(154)에 삽입되도록 돌출된 하부엠보싱(132)이 각각 복수개 형성되어;상기 제2염공부재(150)는 상기 제2플레이트(120)와 제3플레이트(130) 사이에 개재되어 상기 상부홈(153)과 상부엠보싱(131), 상기 하부홈(154)와 하부엠보싱(132)의 삽입결합에 의해 고정되는 것을 특징으로 하는 과농 희박 연소장치
- 제5항에 있어서,상기 상부홈(153)은 상방향으로 개방되고 하방향으로 폐색된 형상으로 이루어지고, 상기 하부홈(154)은 상방향으로 폐색되고 하방향으로 개방된 형상으로 이루어진 것을 특징으로 하는 과농 희박 연소장치
- 제4항에 있어서,상기 제3플레이트(130)에는 상기 분배구멍(122)에 대응되는 위치에 상기 분배구멍(122) 방향으로 오목하게 형성된 오목부(133)가 형성된 것을 특징으로 하는 과농 희박 연소장치
- 제7항에 있어서,상기 제3플레이트(130)에는 상기 오목부(133)의 하부에 상기 공기통공(121)을 통해 분출된 공기를 수평방향으로 분산시키기 위한 적어도 하나의 분산엠보싱이 형성된 것을 특징으로 하는 과농 희박 연소장치
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