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
  • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at 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
  • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
  • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
  • F23D14/10—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head
  • F23D14/105—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head with injector axis parallel to the burner head axis
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
  • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
  • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
  • F23D14/045—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with a plurality of burner bars assembled together, e.g. in a grid-like arrangement
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
  • F23D14/46—Details, e.g. noise reduction means
• • 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
  • F23D14/48—Nozzles
  • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
  • F23D14/583—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits
• • 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

Definitions

• the present invention relates to a burner for gas boilers that produce stable combustion without generating the lifting of flame by stably guiding gas and primary air to the inside of an upper plate and having a first slope having main fire holes to improve efficiency of ignition and combustion in a burner main body.
• burners used in gas boilers or oil boilers are devices that appropriately mix gas or oil with air and then produces combustion and classified into a red flame burner, a Bunsen burner, and a premix gas burner, according to the mixing ratio of primary and secondary air.
• the red flame burner is commonly used for gun-type burners in which fuel is injected and combustion is produced while air is mixed with the fuel.
• the Bunsen type burner which is classified into a Bunsen burner or a semi-Bunsen burner, produces combustion, mixing fuel that is injected with primary air, and then additional secondary air is provided to produce practically complete combustion.
• the premix burner produces combustion only with primary air and uses an impeller to improve efficiency in mixing fuel with air.
• a circular burner generally has one venturi pipe and one nozzle unit. Therefore, it was difficult to produce combustion when gas pressure that is supplied decreases, such as rush hour, or the gas decreases in volume due to low temperature of the external air.
• the present invention is designed to overcome the above problems, and it is an object of the invention to provide a burner for a gas boiler that prevents lifting of flame through the main fire holes of the burner main body and stably produces combustion with the highest performance of combustion.
• a burner for gas boiler includes: a casing that has a space inside; a fan that is connected to the lower side of the casing and supplies the external air into the casing; a nozzle unit that is connected to a side of the casing and injects gas at high speed through the front end disposed inside the casing; a burner main body that is disposed from a predetermined distance from the bottom of the casing and has a burner upper plate having main fire holes formed at regular distances at both sides in the longitudinal direction of a burner frame and a burner lower plate connected to the lower side of the burner upper plate and having a polygonal cross section; a venturi plate that is disposed on an open side of the burner main body, at the front of the nozzle unit, and has a venturi hole allowing primary air mixed with the gas injected from the nozzle unit to flow into the burner main body; an end plate that is disposed on the other side of the burner main body, facing the venturi plate; and a guide plate that is
• the burner upper plate and the burner lower plate are made of different materials. That is, it is preferable that the burner upper plate is made of stainless steel and the burner lower plate is made of steel.
• the burner upper plate has: a first horizontal surface having ignition holes spaced part from each other to allow ignition to transfer to the main fire holes formed through the burner upper plate; and first slopes that are each integrally formed with the first horizontal surface in the longitudinal direction, and extend downward from the first horizontal surface at a predetermined angle, while the end is bent downward.
• the burner lower plate has: second slopes that extend inside and downward from the lower first slopes; and a second horizontal surface that is horizontally and integrally formed with the second slopes.
• the main fire holes are formed through the first slopes of the burner upper plate.
• the first slopes are inclined at an angle between 40° to 50° to minimize lifting of flame through the main fire holes.
• the guide plate is positioned such that one end is in contact with the venturi plate and the other end is spaced apart from the end plate to allow the primary air supplied from the nozzle unit and the fan to smoothly flow to the burner upper plate.
• At least one or more burner bodies are provided in the casing.
• a secondary air diffusion plate of which one end is connected to the casing and the burner main body, horizontally extending toward the nozzle unit and the other end has a bending wall bending upward and having fixing holes where the venturi hole of the venturi plate in inserted and fixed, is disposed under the burner main body, and A plurality of secondary air-through holes are formed through the secondary air diffusion plate.
• a burner for gas boiler according to the invention can replace existing circular burners or instantaneous bar type burners, improve the flame holding effect by forming main fire holes at an angle, and maintain the fire by constantly supplying secondary air between the main fire holes. Further, it is possible to achieve an environment-friendly boiler by reducing generation of CO, NOx, etc., because the performance of combustion is considerably improved. Furthermore, since the upper plate and lower plate of the burner main body can be made of different materials, the cost is reduced, and it is possible to reduce the width of the burner by reducing the length of the flame of the burner.
• FIG. 1 is a view illustrating the configuration of a burner for a gas boiler according to the invention.
• FIGS. 2 to 4 are views illustrating the operation of a burner for a gas boiler according to the invention. Mode for the Invention
• FIG. 1 is a view illustrating the configuration of a burner for a gas boiler according to the invention and FIGS. 2 to 4 are views illustrating the operation of a burner for a gas boiler according to the invention.
• a burner includes: a casing 10 that has a space inside; a fan 20 that is connected to the lower side of the casing 10 and supplies the external air into the casing 10; a nozzle unit 30 that is connected to a side of the casing 10 and injects gas at high speed through the front end disposed inside the casing 10; and a burner main body 100 that is disposed from a predetermined distance from the bottom of the casing 10 and has a burner upper plate 110 having main fire holes 112 formed at regular distances at both sides in the longitudinal direction of a burner body 101 and a burner lower plate 120 connected to the lower side of the burner upper plate 110 and having a polygonal cross section.
• the burner further includes: a venturi plate 200 that is disposed on an open side of the burner main body 100, at the front of the nozzle unit 30, and has a venturi hole 210 allowing primary air mixed with the gas injected from the nozzle unit 30 to flow into the burner main body 100; an end plate 300 that is disposed on the other side of the burner main body 100, facing the venturi plate 200; and a guide plate 400 that is horizontally disposed at the center inside the burner main body 100 and guides the gas mixture of the gas and the primary air generated by the nozzle unit 30 to the upper portion of the burner main body 100.
• the burner upper plate 110 and the burner lower plate 120 are made of different materials. That is, the burner upper plate 110 is preferably made of stainless steel and the burner lower plate 120 is preferably made of steel.
• the burner upper plate 110 has a first horizontal surface 114 having ignition holes
• the burner lower plate 120 has second slopes 122 that extend inside and downward from the lower first slopes 116 and a second horizontal surface 124 that is horizontally and integrally formed with the second slopes 122.
• the main fire holes 112 are formed through the first slopes 116 of the burner upper plate 110.
• the first slopes 116 are inclined at a predetermined inclination angle to minimize lifting of flame through the main fire holes 112, preferably between 40° to 50°.
• At least one or more burner bodies 100 may be provided in the casing 10.
• a secondary air diffusion plate 500 of which one end is connected to the casing 10 and the burner main body 100 and the other end has a bending wall 510 bending upward and having fixing holes 512 where the venturi hole 210 of the venturi plate 200 in inserted and fixed, is disposed under the burner main body 100.
• a plurality of secondary air-through holes 520 are formed through the secondary air diffusion plate 500. The secondary air-through holes 520 are disposed separately and outside from the second horizontal surface 124 of the burner main body 100 to supply the secondary air generated by the fan 20 to the outside of the burner main body 100.
• a heat exchanger 1 including a water container (not shown) receiving water and a hot water coil (not shown) is disposed over the burner main body 100.
• Fuel supplied from a fuel supplier (not shown) is injected into the venturi hole 210 through the nozzle unit 30, in which as the fuel injected from the nozzle ends of the nozzle unit 30 passes through the venturi hole 210 of the venturi plate 200, gas mixture of the fuel and primary air around the nozzle unit 30 is supplied into the burner main body 100 in the direction of the arrows.
• the guide plate 400 allows the primary air mixed with the fuel supplied through the nozzle unit 30 to be sufficiently mixed while flowing from the position A to B, and stably guides the gas mixture inside the burner upper plate 110 (see FIG. 1).
• primary air and secondary air for combustion in the burner is supplied from the fan 20 to the secondary diffusion plate 500 and the inlet of the venturi plate 200, through the bottom of the casing 10.
• the secondary air diffusion plate 500 has secondary air-through holes 520, the primary air supplied from the fan 20 is simultaneously supplied to the outside of the burner main body 100.
• the primary air mixed with the fuel by the nozzle unit 30 flows inside the upper plate 110 through the guide plate 400 of the burner main body 100 and, at the same time, the secondary air is supplied from the fan 20 to the outside of the burner main body 100 simultaneously with the primary air, such that ignition is produced through the main fire holes 112.
• the burner upper plate 110 of the burner main body 100 is made of stainless steel, the heat resistance is improved. Further, since the first slopes 116 have an inclination angle between 40° to 50°, the lifting of flame through the main fire holes 112 are prevented and the flames are constantly maintained in stable state. [41] Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention.
• the present invention provides a burner for a gas boiler that produces stable combustion with the highest performance of combustion, without generating the lifting of flame through the main fire holes of a burner main body.

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Cited By (2)

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Citations (3)

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• 2007
  • 2007-01-19 KR KR1020070006231A patent/KR100808318B1/ko not_active IP Right Cessation
• 2008
  • 2008-01-18 JP JP2009546326A patent/JP5380304B2/ja not_active Expired - Fee Related
  • 2008-01-18 US US12/523,726 patent/US20100294214A1/en not_active Abandoned
  • 2008-01-18 WO PCT/KR2008/000339 patent/WO2008088198A1/en active Application Filing
  • 2008-01-18 CN CN2008800026095A patent/CN101611263B/zh not_active Expired - Fee Related
  • 2008-01-18 EP EP08704871A patent/EP2115355A1/en not_active Withdrawn

Patent Citations (3)

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