WO2006019279A1 - Bruleur a gaz - Google Patents

Bruleur a gaz Download PDF

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Publication number
WO2006019279A1
WO2006019279A1 PCT/KR2005/002733 KR2005002733W WO2006019279A1 WO 2006019279 A1 WO2006019279 A1 WO 2006019279A1 KR 2005002733 W KR2005002733 W KR 2005002733W WO 2006019279 A1 WO2006019279 A1 WO 2006019279A1
Authority
WO
WIPO (PCT)
Prior art keywords
burner
fire hole
gas
air
fire
Prior art date
Application number
PCT/KR2005/002733
Other languages
English (en)
Inventor
Hee Suck Sun
Hyun Jin Lee
Sung Geun Kim
Original Assignee
Kyungdong Boiler Co., Ltd.
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
Priority claimed from KR1020040065578A external-priority patent/KR100652882B1/ko
Priority claimed from KR1020040065579A external-priority patent/KR100644289B1/ko
Application filed by Kyungdong Boiler Co., Ltd. filed Critical Kyungdong Boiler Co., Ltd.
Publication of WO2006019279A1 publication Critical patent/WO2006019279A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • 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
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/103—Flame diffusing means using screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00017—Assembled burner modules

Definitions

  • the present invention relates to a gas combustion burner, that is, a gas burner, and more particularly, to a gas burner where fire hole units are formed of fire hole plates only of a plate shape and thus the size and quantity of fire holes can be easily changed, to accordingly easily alter a burner heat capacity, and where partitions are used in order to constitute fire hole units of a burner module having an identical burner output range, and thus the position alteration of the partitions is easily performed, to ac ⁇ cordingly make it easy to change the total output of the burner and to adjust the combustion surface area.
  • a boiler for heating water and supplying hot water for use in a general home is divided into an oil boiler and a gas boiler, according to a fuel used.
  • the oil boiler or the gas boiler uses a burner for burning oil or gas which is used in the boiler.
  • a general burner is equipment which obtains heat by burning fuel in safety and with good efficiency.
  • the burner is classified into a gas burner for combustion of gas, an oil burner for combustion of liquid fuel such as kerosene or diesel oil, and a powdered coal burner for combustion of coal.
  • the burner is divided into a premixed combustion burner and a diffusion combustion burner according to a method for mixing fuel and air.
  • the premixed combustion burner burns fuel and air which have been mixed in advance and the diffusion combustion burner burns mixed fuel and air in which fuel and air are separately supplied to a burner and mixed therein.
  • Bunsen gas burner which is mostly a diffusion combustion gas burner is used as a home-use gas boiler.
  • the Bunsen gas burner is chiefly used in the gas fuel boiler for supplying air agitato and heightening the temperature of flame in order to raise an instantaneous agitato temperature.
  • the Bunsen gas burner includes a main burner which oversupplies gas and an auxiliary burner which oversupplies air, in order to easily heighten an instantaneous temperature. Accordingly, the Bunsen gas burner can adjust the intensity and length of flame.
  • the main burner is set so that an air surplus ratio is greater than 1.2
  • the auxiliary burner is set so that an air surplus ratio is smaller than 0.8.
  • nitrogen oxide (NOx) of 40 through 60ppm is discharged, in comparison with the case that nitrogen oxide (NOX) of 120ppm or so is discharged when the Bunsen gas burner is operated for combustion at a constant air-to-fuel ratio.
  • FlG. 1 is a perspective view showing a conventional Bunsen gas burner which is in operation.
  • the Bunsen gas burner 50 mixes gas with primary air 46 supplied by an air blower 42, and burns the mixed gas in a combustion chamber 45.
  • secondary air 47 is taken into the combustion chamber 45 in order to assist the combustion, diffusion combustion occurs.
  • a premixed gas burner in which fuel gas is mixed with primary air which is compulsively supplied by an air blower fan, at a predetermined ratio, to thus make a premixed gas, and the premixed gas is primarily burnt in a burner.
  • the premixed gas burner includes a plurality of burners, in which an overall combustion operation for burning the premixed gas at the total burners and a partial combustion operation for burning the premixed gas at the partial burners are exchanged at a user's will.
  • FlG. 2 is a cross-sectional view showing an example where a conventional premixed gas burner is used in a boiler device.
  • the boiler device shown in FlG. 2 includes a premixed gas burner 42 located at the lower portion of a combustion chamber 41 and a heat exchanger 45 which heats water supplied via a water supply tube 43 into the hot water obtained by the gas burner 42 and supplies the hot water to a kitchen or bathroom via a hot water supply tube 44.
  • the internal structure of a combustion chamber 46 in the premixed gas burner 42 is divided by partition walls 47, which includes a central mixing portion 48a, and two lateral mixing portions 48b located at either side of the central mixing portion 48a, in which a central combustion plate 49a is installed in the central mixing portion 48a, and two lateral mixing plates 49b are installed in the lateral mixing portions 48b as a burner portion.
  • the mixing portions 48a and 48b mix fuel gas supplied from a gas tube 50 with primary air for combustion compulsively supplied by an air blower fan 51, to thus produce premixed gas.
  • the premixed gas is supplied to the combustion plates 49a and 49b, respectively so as to be burnt.
  • An air blow fan 51 is connected at the inhalation portion of the mixing portions 48a and 48b in the premixed gas burner 42.
  • the gas tube 50 is branched into a first gas tube 53 and a second gas tube 54 at the following stage of a main gas valve 52.
  • the first gas tube 53 communicates with an air inhalation unit 51a in the air blow fan 51 via a first electronic valve 55 and the second gas tube 54 communicates with the inhalation portion of the mixing portion 48a via a second electronic valve 56.
  • the fuel gas supplied from the first gas tube 53 is mixed with primary air for combustion supplied from the air blower fan 51 at the mixing portions 48a and 48b, at the state where the main gas valve 52 and the first electronic valve 55 are open and the second electronic valve 56 is closed, to then become premixed gas.
  • the premixed gas is supplied to the combustion plate 49a and 49b, respectively to then make an overall combustion operation proceed.
  • the fuel gas supplied from the second gas tube 54 is mixed with primary air for combustion supplied from the air blower fan 51 at the mixing portion 48a, at the state where the main gas valve 52 and the second electronic valve 56 are open and the first electronic valve 55 is closed, to then become premixed gas.
  • the premixed gas is supplied to the combustion plate 49a, to then make a partial combustion operation proceed only by the combustion plate 49a.
  • only air is supplied to the combustion plates 49b by the air blower fan 51 via the mixing portions 48b.
  • the combustion chamber 46 is integrally formed of the mixing portions 48a and 48b which are partitioned by partitions 47 which are made of aluminum casting.
  • a mixing portion should be installed according to the kind of the premixed gas burner, in correspondence to the number of the burner portions or differences in firing forces at the time of an overall combustion or partial combustion in the burner portions.
  • the structure of the premixed gas burner is complicated and thus casting molds should be separately fabricated, to thereby increase production cost.
  • fire hole surfaces having fire holes through which flames are formed are made of ceramic plates, heat-resistant stainless steel plates, or metal fiber mats.
  • the conventional premixed gas burner includes a fire hole unit where fire holes are formed on a single plate-shaped or cylindrical member, or on a metal fiber mat or ceramic plate member which is fabricated by a knitting or sintering method.
  • the ceramic plate and the heat-resistant stainless steel plate has a constant hardness or rigidity in view of their structure, rectification plates can be easily assembled in the burner.
  • condensed water generated in the heat exchanger may fall down to the combustion surface during performing an upward combustion operation.
  • the surface of the fire hole unit is damaged by water, and fire holes having irregular shapes are formed, to thus cause incomplete combustion to take place.
  • the metal fiber mat is made of metal fibers by a knitting method, it has flexibility.
  • the metal fiber mat should maintain air-tightness so that mixed gas can be burnt only on the surface of the metal fiber mat in the burner. Accordingly, the metal fiber mat relies on welding of edge surfaces assembled with rectification plates in the burner, to thus make a fabrication work complicated.
  • burner flames may be un- stabilized when a flame temperature is low. Also, a production cost is increased and difficulties of production of the gas burner are caused. In the case of a home-use gas burner which is designed in a simple structure, a stable control of premixed gas combustion may be difficult somewhat.
  • the gas burner disclosed in the above-described same applicant's patent application having separated fire hole units includes a tube-shaped burner 20 in which fire hole units 21 each having a number of fire holes formed at a predetermined distance from one another are disposed on the upper end face thereof, for burning gas and air which are supplied in a mixed state, and a plate-shaped burner 30 which is detachably disposed in loaders 22 formed between the fire hole units 21 formed on the upper end of the tube-shaped burner 20, in which fire hole units 31 having a number of fire holes are disposed.
  • the gas burner has a main casing 10 on the bottom surface of which an air blower 50 is mounted so that air can be supplied from the air blower 50 through an air inlet 11 formed on the lower portion of the gas burner.
  • a partition 13 partitioning between the air blower 50 mounted on the bottom of the main casing 10 and the tube-shaped burner 20 is formed at a distance from the bottom surface of the main casing 10. Also, the tube-shaped burner 20 is loaded over the partition 13.
  • the premixed combustion gas burner including the tube- shaped burner 20 and the plate-shaped burner 30 is disposed in parallel with each other on the partition 13 provided in the main casing 10.
  • a number of mixture supply tubes 40 which are inserted into the tube-shaped burner 20 and disposed at a distance from each other are provided in the front surface of the main casing 10 so that gas and air can be mixed and supplied to the tube-shaped burner 20 and the plate-shaped burner 30.
  • Venturi tubes 60 playing a role of mixing gas and air and distributing the mixed flow amount which are needed for combustion of the burner and independently supplied to each burner are installed on the front surface of the mixture supply tubes 40.
  • the mixture supply tubes 40 play a role of mixing gas and air and supplying the mixture to the burner in a mixture state of gas and air.
  • manifolders 90 through which air and gas can be supplied are provided in front of each of the Venturi tubes 60. Accordingly a separate unit for mixing air and gas is not needed. Gas is supplied from nozzles closely installed in front of the Venturi tubes 60.
  • fire hole units 21 each having a number of fire holes formed with a uniform size at a predetermined distance from one another are disposed in both edge lines and the inner portion on the upper end face thereof.
  • Loaders 22 are formed to mount the plate-shaped burner 30 between the fire hole units 21 in turn.
  • the tube-shaped burner 20 is formed of a number of tubular burners 20 connected in parallel with one another, in units of a single tubular shape.
  • a plurality of fitting holes 23 through which a cooling water tube 70 is fitted and which is fixedly connected with the plate-shaped burner 30 are formed at a pre ⁇ determined distance on the lateral surface of the tube-shaped burner 20.
  • the plate-shaped burner 30 is a burner made of a plate-shaped material on the bottom of which a protruding pin structure 32 is formed with a predetermined curvature.
  • the plate-shaped burner 30 has a structure that fire hole units 31 are disposed along both edge lines on the upper surface of the plate-shaped material, in which each fire hole unit has a number of fire holes at a predetermined distance in the form of a slit of a uniform size, like the tube-shaped burner 20.
  • fitting holes 33 formed on the pin-structure 32 formed on the bottom of the plate-shaped burner 30, through which a cooling water tube 70 can penetrate are formed in correspondence to the fitting holes 23 of the tube-shaped burner 20.
  • the plate-shaped burner 30 is simply fitted into the loader 22 of the tube- shaped burner 20.
  • the water tube 70 penetrates the insertion hole 12 formed in the lateral surface of the main casing 10 and fitted into a fitting hole 23 formed in the lateral surface of the tube-shaped burner 20 and a fitting hole 33 formed in the pin structure 32 formed on the bottom surface of the plate-shaped burner 30 in correspondence to the fitting hole 23 formed in the tube-shaped burner 20, to thereby firmly fix the tube-shaped burner 20 and the plate-shaped burner 30.
  • water circulating along the water tube 70 can cool the overheated burner simultaneously.
  • the tube-shaped burner 20 and the plate-shaped burner 30 having the above- described structures constitute a single premixed combustion gas burner in which the plate-shaped burner 30 is mounted on the loaders 22 of the tube-shaped burner 20.
  • the fire hole unit 21 of the tube-shaped burner 20 is located in the middle of the plate-shaped burners 30, and the fire hole unit 21 of the tube-shaped burner 20 makes flames easily transmitted between the plate-shaped burners 30.
  • the leftmost and rightmost fire hole units 21 play a role of easily transmitting flames between the tube- shaped burners 20.
  • the gas burner according to the previous patent application having the above- described structure employs a structure of performing a multi-stage control of a burner in which premixed combustion gas burners each which includes several tube-shaped burners 20 and several plate-shaped burners 30 whose output capacity is identical are disposed in parallel with one another to thereby perform a combustion operation by varying the number of burners according to a desired heat capacity.
  • the output of the burner is influenced by the number of the plates where the fire hole units are disposed.
  • a burner capacity is easily changed according to the number of plates and the size of the fire holes.
  • the cooling water tube 70 plays a role of fixing the tube-shaped burner
  • the present invention provides a gas burner in which several fire hole units each having an identical burner output range are disposed in parallel with one another and the number of the fire hole units can be altered according to a required calory, to thereby perform a combustion operation, and the total output alteration is easily performed through change in the position and the number of the partitions and the combustion surface area is easily performed, to thereby allow a multi-stage control of the gas burner.
  • the fire hole units in the burner portion are formed of only fire hole plates of a plate-shaped material. Accordingly, the structure is simple and the fire hole units are separated into several pieces, to thereby prevent deformation due to a thermal stress. Also, the size and number of the fire holes can be easily changed, and thus the burner capacity can be easily changed.
  • the gas burner according to the present invention has a structure of the typical premixed gas burner, and thus includes the same merits as those of the existing premixed gas burner.
  • the gas burner according to the present invention can be easily fabricated into a high-load burner assembly whose size is relatively small than that of the con ⁇ ventional Bunsen burner, and increase and decrease the number of the unit burners according to a target calory of a total load, to accordingly have a structural feature that alteration of a design can be easily performed.
  • FlG. 1 is a schematic view explaining a conventional Bunsen gas burner which is in use;
  • FlG. 2 is a cross-sectional view showing an example where a conventional premixed gas burner is used in a boiler device;
  • FlG. 3 is an exploded perspective view showing a total structure of a conventional premixed gas burner according to a previous patent application;
  • FlG. 4 is a cross-sectional view showing an assembly state of the premixed gas burner shown in FlG. 3;
  • FlG. 5 is an exploded perspective view showing a total structure of a gas burner according to the present invention
  • FlG. 6 is a perspective view showing an assembly state of the gas burner shown in
  • FIG. 5 A first figure.
  • FIG. 7 is a perspective view showing a burner assembly of a gas burner according to the present invention.
  • FIG. 8 is an exploded perspective view showing essential portions of one fire hole unit according to the present invention.
  • FIG. 9 is a cross-sectional view showing the internal structure of a burner assembly in a gas burner according to the present invention.
  • FIG. 10 is a perspective view showing the air discharging mechanism of an air blower according to the present invention.
  • FIG. 11 is a cross-sectional view showing an example of changing installation angles of partitions according to the air discharging pattern of the air blower shown in FIG. 10 according to the present invention.
  • FIG. 12 is an exploded perspective view showing a gas burner according to another embodiment of the present invention.
  • FIG. 13 is a perspective view showing an assembly state of the gas burner shown in
  • FIG. 12 The first figure.
  • FIG. 14 is a cross-sectional view showing the internal structure of a burner assembly in the gas burner of FlG. 13. Best Mode for Carrying Out the Invention
  • a gas burner comprising: a burner assembly having an air inhalation unit supplying air for combustion located in the lower portion of the burner assembly in which an air blower is mounted in association with the air inhalation unit; a burner portion which is mounted on the upper combustion surface of the burner assembly in which a number of fire hole units each having a number of fire holes formed at a certain interval burn a mixture of gas and air when the gas mixed with air is supplied; a manifold which is installed in one side of the burner assembly in which a gas nozzle for supplying gas supplied via a gas supply tube is installed; and first and second rectification plates installed between the air inhalation unit and the combustion surface in the burner assembly, wherein the fire hole units are formed in the form of a module in which fire hole plates formed of a plate shape where a number of fire holes are formed are connected in parallel with each other, wherein when the fire hole units are mounted in the burner portion, the total fire hole units are
  • a number of fixing units are installed on the combustion surface of the burner assembly at a certain interval according to the number of fire hole units and the mounting positions, and when partitions are installed via the fixing units, the partitions partitioning each stage over from the lower air inhalation unit to the upper combustion surface in the burner assembly are detachably installed.
  • FlG. 5 is an exploded perspective view showing a total structure of a gas burner according to the present invention.
  • FlG. 6 is a perspective view showing an assembly state of the gas burner shown in FlG. 5.
  • FlG. 7 is a perspective view showing a burner assembly of a gas burner according to the present invention.
  • FlG. 8 is an exploded perspective view showing essential portions of one fire hole unit according to the prese nt invention.
  • FlG. 9 is a cross-sectional view showing the internal structure of a burner assembly in a gas burner according to the present invention.
  • FlG. 10 is a perspective view showing the air discharging mechanism of an air blower according to the present invention.
  • FlG. 11 is a cross-sectional view showing an example of changing installation angles of partitions according to the air discharging pattern of the air blower shown in FlG. 10 according to the present invention.
  • a gas burner according to the present invention includes a burner assembly 100 supplying air for combustion in which an air blower 130 is mounted in the lower portion of the burner assembly 100, and a burner portion 110 which is mounted on the upper combustion surface of the burner assembly 100 in which a number of fire hole units 120 each having a number of fire holes 122 disposed at a certain interval burn a mixture of gas and air when the gas mixed with air is supplied.
  • the gas burner is a kind of a premixed gas burner that mixes fuel gas supplied from a gas supply tube 150 with primary air for combustion compulsively supplied by an air blower 130, to thereby form premixed gas, and supplies the premixed gas to the burner portion 110 in which a number of fire hole units 120 each having a number of fire holes 122 are disposed at a certain interval, to thereby burn the premixed gas.
  • the burner portion 110 having a number of separated fire hole units 120 and a number of gas supply units 142 are provided. Accordingly, the present invention provides a gas burner that executes an overall combustion operation and a partial combustion operation to thereby perform a multi-stage control.
  • the gas burner according to the present invention includes the burner portion 110 in which a number of fire hole units 120 each having a number of fire hole plates 121 are disposed in parallel with each other in the upper end of the burner assembly 100.
  • the air blower 130 is mounted in the lower end of the burner assembly 100, so that combustion air can be supplied linearly.
  • An integral manifold 140 is installed in front of the burner assembly 100 in which gas supply units 142 connected with a gas supply tube 150 are provided.
  • the burner portion 110 has a structure of burning gas mixed with air when the mixture of gas and air is supplied, in which a set of fire hole units 120 each having a number of fire holes 122 are disposed at a certain distance on the combustion surface of the burner assembly 100 so that the entire fire hole units 120 can be separated in ⁇ dividually.
  • the fire hole units 120 are formed of a set of several fire hole plates 121 each having a ⁇
  • the burner portion 110 has a structure that a number of fire hole units 120 having a plate-shaped unit are connected and disposed in parallel with each other.
  • a number of fire holes 122 constituting the fire hole units 120 are formed uniformly on the fire hole plates 121, to thereby provide a uniform performance of a unit of a burner.
  • each of the fire holes 122 can be formed on the fire hole plates
  • the fire hole plates 121 are disposed in combination according to size of each of the fire holes 122, to thereby constitute the fire hole units 120 having a variety of fire hole loads.
  • a number of grooves 121a are formed at a certain interval on the left and right side surfaces excluding the upper end surface on which the fire holes 122 are formed in the fire hole plates 121, to thereby minimize a degree of twist due to a thermal stress.
  • the fire hole units 120 are constituted in the form of a single module including several fire hole plates 121 having the above-described structure, to thereby cause the entire fire hole units 120 to be disposed in a structure that the whole fire hole units 120 are separated into a number of pieces in the gas burner. This functions as a factor that can minimize a degree of twist due to a thermal stress even in the case that the surfaces of the fire hole units 120 are cumulatively heated due to an abnormal combustion operation in the fire hole units 120.
  • the gas burner according to the present invention has a relatively remarkable effect of maintaining a uniform running performance of the burner.
  • the fire hole units 120 are fabricated into a module and separated in ⁇ dividually, the number of fire hole units 120 can be mounted in combination considering the maximum output capacity of a gas burner according to a desired design.
  • the fire hole units 120 each have a structure that size of the fire holes 122 and the number of the fire hole plates 121 in the fire hole units 120 are easily changed according to a required output range, that is, a capacity alteration, to thereby allow the stage adjustment as well as the capacity alteration to be easily performed.
  • the burner assembly 100 has an internal structure that an air flowing path is gradually widened in the front and rear direction and the left and right direction so that the air flowing path is formed in the vertically upward direction having no curved portions from the air inhalation unit 102 to the combustion surface 103.
  • first and second rectification plates 190 and 191 for uniformly mixing gas and combustion air are provided in the burner assembly 100.
  • partitions 200 are formed in the burner assembly 100 in order to uniformly distribute the premixed gas with air.
  • the first rectification plate 190 is installed toward the air inhalation unit 102 and has a plate shape, in which a number of throughholes 190a through which primary air passes are formed at the center of the first rectification plate 190.
  • the second rectification plate 191 is installed just below the fire hole units 120 and has a plate shape, in which a number of small throughholes 191a of which the sizes are relatively smaller than those of the throughholes 190 in the first rectification plate 190 are formed uniformly over the whole second rectification plate 191.
  • the primary air for combustion which is input via the air inhalation unit 102 collides with the first rectification plate 190 and is mixed with gas supplied from the gas nozzle 170 to be described later at the state where the primary air is sufficiently rectified via the throughholes 190a.
  • the primary air for combustion and the gas having passed through the first rectification plate 190 are input into the second rectification plate 191 at the state where the primary air and the gas are premixed via a sufficient distance or space assumed on the flowing path in the burner assembly 100, and the premixed gas which has been sufficiently mixed via the first rectification plate 190 is uniformly distributed by the small holes 191a, so as to be guided to the fire hole plates 121 in the fire hole units 120.
  • the present invention is characterized in that partitions 200 are installed in the burner assembly 100 in order to uniformly the premixed gas as described above together with the first and second rectification plates 190 and 191.
  • the partitions 200 are fitted or loaded into a number of fixing grooves 104 which are provided at a certain distance near the combustion surface 103 of the burner assembly 100, to thus play a role of partitioning the internal space of the burner assembly 100 into a number of compartments.
  • the partitions 200 partitions the space in the burner assembly 100 between the air inhalation unit 102 and the combustion surface 103, considering the number of the fire hole units 120 mounted on the combustion surface 103 in the burner assembly 100, so that the internal space of the burner assembly 100 is partitioned in a multi-stage in correspondence to the number of the fire hole units 120. Accordingly, the premixed gas can be uniformly dispersed and supplied into the fire hole units 120 which have been respectively separated according to each partitioned stage.
  • the partitions 200 can be supported and fixed to a number of the fixing grooves
  • the interval between the fixing grooves 104 are designed in advance according to the number of the fire hole units 120 mounted on the combustion surface 103 and the mounting position thereof.
  • the number of the fire hole units 120 is determined. If the mounting positions of the fire hole units 120 are determined according to the number of the determined fire hole units 120, the installation numbers and installation positions of the partitions 200 partitioning each stage are determined.
  • an amount of gas of the gas and air forming the premixed gas is uniformly supplied through a valve control which can control an amount of gas when gas is ejected via a gas nozzle 170 to be described later via the gas supply tube 150. Accordingly, if an air ratio of each stage in the burner should be uniformly maintained, an amount of air supplied should be same, that is, should be uniformly supplied.
  • the number of throughholes 190a which are formed in uniform size in the first rectification plate 190 is adjusted, or a method of disposing throughholes 190a of different sizes can be used in order to adjust the cross-sectional area of the air inhalation unit 102. Also, the above-described methods can be simultaneously used in parallel with one another.
  • a gas supply tube 150 is connected with the central gas supply unit 142, and the left and right gas supply units 142 are connected with solenoid valves 160 in association with the gas nozzles 170 via an opened portion, respectively
  • the three gas supply units 142 communicate with one another via lateral connection holes 143 which are formed on the lateral walls adjacent in the gas supply units 142. Accordingly, if gas is supplied from the gas supply tube 150 connected with the central gas supply unit 142, gas is also distributed to the left and right gas supply units 142.
  • An opening and closing hole 161 formed in the body of the solenoid valve 160 and lateral connection holes 143 formed in the lateral walls of the gas supply units 142 are correspondingly opposed to one another.
  • the opening and closing hole 161 formed in the body of the solenoid valve 160 is opened and closed by the function of the solenoid valve 160, to thereby determine whether or not gas is supplied.
  • a function of adjusting an amount of gas supplied is provided in the present invention.
  • the gas nozzle 170 is connected with the solenoid valve 160, so that gas can be supplied. At the state where the gas nozzle 170 is connected to the solenoid valve 160, the gas nozzle 170 is extensively installed so that it is placed on the air supply path of the air blower 130 via the gas supply units 142. Accordingly, the combustion air discharged from the air blower 130 and the gas supplied via the gas nozzles 170 are mixed in the burner assembly 100 and the premixed gas is supplied to the fire hole units 120.
  • gas and air for combustion are premixed in the process of passing though the internal air inhalation unit to the combustion surface in the burner assembly 100, at the state where the gas supply units 142 take the independent shapes from the air supply path of air for combustion supplied via the air blower 130.
  • an orifice 180 which can control an amount of flowing gas is installed between the solenoid valves 160 and the gas nozzles 170 which are installed in the manifold 140.
  • the orifice 180 can be replaced without replacement of the gas nozzles 170 in the case that a calorie change is needed from LNG to LPG and vice versa according to the kind of gas used, to thereby make it possible to perform a calorie change.
  • an O-ring 162 for use in a valve and a packing 163 for use in a valve seat are intermediated between the solenoid valve 160 and the orifice 180.
  • a manifold 140 is provided in the present invention so that air and gas can be supplied separately via the independent paths in the gas burner according to the present invention.
  • the gas nozzles 170 playing a role of distributing gas necessary for combustion can be mounted in the manifold 140.
  • gas is supplied from the gas supply tube 150 connected toward the gas supply units 142 installed in the body of the manifold 140.
  • gas supplied from the gas supply tube 150 via the gas supply units 142 is distributed into the internal space of the burner assembly 100 via the gas nozzles 170, in the manifold 140.
  • the air supplied from the air blower 130 is supplied into the burner assembly 100 and passes through the internal space of the burner assembly 100. At this process, the air passes through the first and second rectification plates 190 and 191 and thus air and gas is mixed and thus premixed gas is supplied to the burner portion 110 in the form of a mixture.
  • fire hole unit supporting guides 125 are supported at the left and right sides of the fire hole units 120 in order to minimize deformation of the fire hole units 120 which can occur during performing abnormal combustion in the fire hole units 120.
  • the fire hole unit supporting guides 125 are provided to have lengths cor ⁇ responding to those of the fire hole plates 121 of the fire hole units 120, and disposed in parallel with each other at both the sides of the fire hole plates 121.
  • the fire hole unit supporting guides 125 which are installed at the left and right sides of the fire hole units 120 are installed with a sufficient gap "h" so as to assume a space of absorbing an expansion amount in the case that the fire hole units 120 are thermally expanded to the left and right sides.
  • the fire hole units 120 are firmly fixed together with the fire hole unit supporting guides 125, in order to prevent a leakage of the mixture of gas and air, and fire hole unit fixing covers 123 are provided at the left and right sides of the fire hole units 120, respectively.
  • fire hole unit fixing covers 123 each formed of a thin plate and bolts 124.
  • the fire hole unit fixing covers 123 each have a substantially D-shaped member, on which bolt holes 123a are formed through which bolts are tightened.
  • the fire hole unit fixing covers 123 are separately fixed respectively according to the set of fire hole units 120, to thereby minimize deformation due to a thermal stress.
  • the fire hole fixing covers 123 can minimize the gap between the fire hole units 120 which can occur due to a fabrication clearance or an assembly clearance when the fire hole units 120 constituted by a number of fire hole plates 121, to thereby prevent a leakage of the mixture of gas and air.
  • FlG. 12 is an exploded perspective view showing a gas burner according to another embodiment of the present invention.
  • FlG. 13 is a perspective view showing an assembly state of the gas burner shown in FlG. 12.
  • FlG. 14 is a cross-sectional view showing the internal structure of a burner assembly in the gas burner of FlG. 13.
  • a gas burner according to another embodiment of the present invention has a structure including two fire hole units 120.
  • the maximum output thereof is smaller than that of the case that the gas burner includes three fire hole units 120.
  • part of the combustion surface is closed using fire hole plates 121 ' on which fire holes 122 are not formed because of reduction in an area of the combustion surface due to the output reduction.
  • one partition 200 which plays a role of uniformly dis ⁇ tributing the mixture is installed between the two fire hole units 120 in the burner assembly 100.
  • the gas burner according to the present invention has a con ⁇ figuration capable of a multi-stage control in the gas burner, in which several fire hole units 120 each having an identical burner output range are disposed in parallel with one another and the number of fire hole units 120 are altered according to a desired calory to thereby perform a different combustion operation.
  • the gas burner according to the present invention has a structure of a typical premixed gas burner, the merits of the existing premixed gas burner are maintained as they are.
  • the gas burner according to the present invention can be easily fabricated into a high-load burner assembly whose size is relatively small than that of the con ⁇ ventional Bunsen burner, and increase and decrease the number of the unit burners according to a target calory of a total load, to accordingly have a structural feature that alteration of a design can be easily performed.
  • the fire hole units in the present invention are implemented so that the size of the fire holes and the number of the fire hole plates can be easily altered according to a required output range, that is, a capacity change.
  • the present invention can easily alter the capacity of a burner and easily adjust a combustion stage to thereby easily implement a multi-stage control.
  • a gas burner according to the present invention can be applied to a premixed gas burner which is used for a gas boiler.

Landscapes

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

Abstract

L'invention concerne un brûleur à gaz qui comporte un ensemble brûleur (100), une partie du brûleur présentant des unités d'orifices de chauffe (120), et une rampe (150). Les unités d'orifices de chauffe (120) présentent la forme d'un module dans lequel des plaques (121) d'orifices de chauffe de forme plate comportant un certain nombre d'orifices de chauffe (122) sont reliées les unes aux autres en parallèle. Lorsque les unités d'orifices de chauffe (120) sont installées dans la partie brûleur, toutes les unités d'orifices de chauffe (120) sont séparées en un certain nombre de pièces. Plusieurs unités d'orifices de chauffe (120), chacune ayant une gamme de rendement de brûleur identique, sont disposées en parallèle les unes par rapport aux autres, de façon à réaliser une opération de combustion par changement du nombre d'unités d'orifices de chauffe (120) en fonction de la quantité de chaleur. Les unités d'orifices de chauffe (120) sont formées de plaques (121) d'orifices de chauffe et sont par conséquent de structure simple, et les unités d'orifices de chauffe (120) sont séparées en plusieurs pièces, de façon à empêcher la déformation due à une contrainte thermique. En outre, la dimension et le nombre d'orifices de chauffe (122) peuvent être modifiés aisément pour, ainsi, modifier aussi aisément la capacité thermique du brûleur. De plus, des cloisons sont utilisées afin de former des unités d'orifices de chauffe (120) d'un module de brûleur présentant une gamme de rendement de brûleur identique, ainsi, la modification de position des cloisons est aisément réalisée, ce qui permet de modifier facilement le rendement total du brûleur et de régler la surface de combustion.
PCT/KR2005/002733 2004-08-19 2005-08-19 Bruleur a gaz WO2006019279A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2004-0065578 2004-08-19
KR1020040065578A KR100652882B1 (ko) 2004-08-19 2004-08-19 가스연소버너의 염공부 구조
KR1020040065579A KR100644289B1 (ko) 2004-08-19 2004-08-19 가스연소버너의 버너부 격막 설치구조
KR10-2004-0065579 2004-08-19

Publications (1)

Publication Number Publication Date
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1936272A1 (fr) * 2006-12-14 2008-06-25 Rinnai Corporation Appareil de combustion à alimentation en air forcée
EP1959194A1 (fr) * 2007-02-19 2008-08-20 Viessmann Werke GmbH & Co. KG Dispositif de mélange pour un brûleur à gaz comprenant un ventilateur
EP2039996A1 (fr) * 2007-09-21 2009-03-25 Electrolux Home Products Corporation N.V. Brûleur au gaz pour table de cuisson
WO2011082924A3 (fr) * 2009-12-16 2011-09-09 Robert Bosch Gmbh Brûleur de soufflerie à gaz présentant une puissance de brûleur modulable et procédé pour faire fonctionner un brûleur de soufflerie à gaz
US20110256490A1 (en) * 2010-04-14 2011-10-20 Grand Mate Co., Ltd. Combustor assembly of water heater
EP2381170A1 (fr) * 2010-04-22 2011-10-26 Tulp BV Ensemble de brûleur de gaz
ITBO20110281A1 (it) * 2011-05-18 2012-11-19 Riello Spa Bruciatore premiscelato
CN103185339A (zh) * 2011-12-28 2013-07-03 株式会社能率 浓淡火焰燃烧器及燃烧装置
DE202014101097U1 (de) * 2014-03-11 2015-06-12 Ulrich Dreizler Brenner mit einer Oberflächenverbrennung
ITUB20152343A1 (it) * 2015-07-21 2017-01-21 Polidoro Spa Caldaia a gas ad elevato rapporto di modulazione
JP2018004127A (ja) * 2016-06-29 2018-01-11 リンナイ株式会社 ガスバーナ装置
US20180031230A1 (en) * 2016-07-29 2018-02-01 Purpose Co., Ltd. Burner, combustion apparatus, and combustion method
CN110145739A (zh) * 2019-06-14 2019-08-20 中山市三诺燃气具有限公司 分段式红外线燃烧器

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AT407909B (de) * 1999-01-19 2001-07-25 Vaillant Gmbh Vormischender brenner
DE10028669A1 (de) * 2000-06-09 2001-12-13 Ruhrgas Ag Verfahren und Vorrichtung zum Erwärmen von flächigem Material
US20040126727A1 (en) * 2002-10-22 2004-07-01 Cho Seung Beom Combustion gas burner enabling multi-stage control

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AT407909B (de) * 1999-01-19 2001-07-25 Vaillant Gmbh Vormischender brenner
DE10028669A1 (de) * 2000-06-09 2001-12-13 Ruhrgas Ag Verfahren und Vorrichtung zum Erwärmen von flächigem Material
US20040126727A1 (en) * 2002-10-22 2004-07-01 Cho Seung Beom Combustion gas burner enabling multi-stage control

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7955072B2 (en) 2006-12-14 2011-06-07 Rinnai Corporation Forced air supply combustion apparatus
EP1936272A1 (fr) * 2006-12-14 2008-06-25 Rinnai Corporation Appareil de combustion à alimentation en air forcée
EP1959194A1 (fr) * 2007-02-19 2008-08-20 Viessmann Werke GmbH & Co. KG Dispositif de mélange pour un brûleur à gaz comprenant un ventilateur
AU2008300769B2 (en) * 2007-09-21 2011-12-22 Electrolux Home Products Corporation N.V. Gas burner for a cooktop
EP2039996A1 (fr) * 2007-09-21 2009-03-25 Electrolux Home Products Corporation N.V. Brûleur au gaz pour table de cuisson
WO2009037034A1 (fr) * 2007-09-21 2009-03-26 Electrolux Home Products Corporation N.V. Brûleur à gaz pour une table de cuisson
US8763600B2 (en) 2007-09-21 2014-07-01 Electrolux Home Products Corporation N.V. Gas burner for a cooktop
WO2011082924A3 (fr) * 2009-12-16 2011-09-09 Robert Bosch Gmbh Brûleur de soufflerie à gaz présentant une puissance de brûleur modulable et procédé pour faire fonctionner un brûleur de soufflerie à gaz
US8647112B2 (en) * 2010-04-14 2014-02-11 Grano Mate Co., Ltd. Combustor assembly of water heater
US20110256490A1 (en) * 2010-04-14 2011-10-20 Grand Mate Co., Ltd. Combustor assembly of water heater
EP2381170A1 (fr) * 2010-04-22 2011-10-26 Tulp BV Ensemble de brûleur de gaz
ITBO20110281A1 (it) * 2011-05-18 2012-11-19 Riello Spa Bruciatore premiscelato
EP2525150A1 (fr) * 2011-05-18 2012-11-21 Riello S.p.A. Brûleur à prémélange
US9109798B2 (en) 2011-05-18 2015-08-18 Riello S.P.A. Premix burner
CN103185339A (zh) * 2011-12-28 2013-07-03 株式会社能率 浓淡火焰燃烧器及燃烧装置
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
DE202014101097U1 (de) * 2014-03-11 2015-06-12 Ulrich Dreizler Brenner mit einer Oberflächenverbrennung
ITUB20152343A1 (it) * 2015-07-21 2017-01-21 Polidoro Spa Caldaia a gas ad elevato rapporto di modulazione
WO2017013596A1 (fr) * 2015-07-21 2017-01-26 Polidoro S.P.A. Chaudière à gaz ayant un rapport de modulation élevé
CN108139074A (zh) * 2015-07-21 2018-06-08 波利多罗有限公司 具有高调节比的燃气锅炉
CN108139074B (zh) * 2015-07-21 2019-11-05 波利多罗有限公司 具有高调节比的燃气锅炉
US10801721B2 (en) 2015-07-21 2020-10-13 Polidoro S.P.A. Gas-fired boiler having a high modulation ratio
JP2018004127A (ja) * 2016-06-29 2018-01-11 リンナイ株式会社 ガスバーナ装置
US20180031230A1 (en) * 2016-07-29 2018-02-01 Purpose Co., Ltd. Burner, combustion apparatus, and combustion method
CN110145739A (zh) * 2019-06-14 2019-08-20 中山市三诺燃气具有限公司 分段式红外线燃烧器

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