JP2004271064A - Bunsen gas burner for gas water heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a Bunsen gas burner for a gas water heater. <P>SOLUTION: First and second gas plates have upper gas holes and lower gas holes, respectively, which are alternately formed between side face burner assemblies of the Bunsen burner to be used for the gas water heater for producing a higher air-fuel ratio to improve burning quality. They are laminated in number for reducing the lengths of whole flames and decreasing the temperature of the flames, thereby producing less loads on the same area and less pollutional substances. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an environmentally friendly gas burner, and in particular, an upper gas hole and a lower gas hole alternately increasing the air-fuel ratio between the side burner assemblies of a Bunsen burner used in a gas water heater to improve the combustibility. Using an intermediate burner assembly formed by laminating a plurality of first and second gas plates formed, the overall flame length is reduced, and the temperature of the flame is reduced to reduce the load on the same area. And a Bunsen gas burner for a gas boiler that reduces the generation of pollutants such as carbon dioxide and nitrogen oxides.
[0002]
[Prior art]
Boilers mainly used for heating and hot water supply in ordinary households are roughly classified into oil boilers and gas boilers depending on the fuel used. In the case of gas boilers, liquefied petroleum gas (LPG) is sometimes used as a raw material, but liquefied natural gas (LNG) that can minimize air pollution is used because it contains less sulfur than LPG. Most of them.
[0003]
A gas water heater is a heating device that warms direct water and is used exclusively for hot water when taking a wash or shower, not for heating.It is of two types: instantaneous gas water heater system and storage gas water heater system. There is a method.
[0004]
The instantaneous gas water heater system has a configuration in which the instantaneous heat exchanger is used to instantaneously heat and discharge hot water when straight water flows, and the storage type gas water heater system includes a storage tank. The storage tank is heated at a certain temperature while storing the direct water to supply hot water to the user so that the user can use it.
[0005]
The burner used in the gas water heater mainly uses a Bunsen Gas Burner that rapidly supplies air to raise the temperature of the flame in order to generate a rapid temperature instantaneously. The Bunsen gas burner is composed of a main burner section that supplies a gas-rich mixture gas that is over-supplied with gas and a sub-burner section that supplies an air-rich mixture gas that is over-supplied with air to facilitate instantaneous temperature rise. The intensity of the flame and the length of the flame were adjusted.
[0006]
In the Bunsen burner described above, if the excess air is set to be larger than 1.2 for the main burner and the excess air ratio is set to be smaller than 0.8 for the sub-burner, when the whole is burned at a constant air-fuel ratio, the nitrogen content is about 120 ppm. compared to oxides (NO _x) is discharged, it is known that can reduce the emissions of nitrogen oxides 40～60Ppm.
[0007]
1 is a perspective view of a conventional Bunsen gas burner, FIG. 2 is a plan view of the conventional Bunsen gas burner, FIG. 3 is a sectional view of the conventional Bunsen gas burner, and FIG. 4 is a conventional Bunsen gas burner. It is a figure which shows the use condition of.
[0008]
The configuration of a conventional Bunsen burner, as shown, shows a combustion section of a gas water heater in which Bunsen burners 100 are fixed to a frame body (not shown) and arranged in rows at predetermined intervals. The Bunsen burner 100 is provided with an elongated main crater 11 formed of a group of slits provided at the upper end, and a flat main burner 1 having a mixed gas inlet 12 disposed on a side portion, and a flat main burner 11 on both sides of the main crater 11. At the same time as the sub crater 21 is formed over the entire width of the main crater 11, a sub burner 2 having a common gas inlet 22 for mixed gas on the side is provided.
[0009]
The main crater 11 and the sub crater 21 are provided with a lid 4 additionally having a window 3 formed by extending the outer peripheral surface of the sub burner 2 in a cross-linking manner. The window 3 is defined by a number of rectangular windows 31 opening the upper side of a subset group of four slits constituting the main crater 11, and a plurality of craters of the sub crater 21, respectively. It is composed of a slit-shaped flame port array 32 that partially closes.
[0010]
The main burner 1 presses a slit group arranged in parallel with the center position of the metal plate formed by the main crater 11 and, at the same time, symmetrically expands the outer surface symmetrically on an orthogonal plane including the center line and protrudes the expansion part 2A. Is molded.
[0011]
In addition, a suction port 120 for fuel gas and primary air is provided at one end by the expansion portion 2A, and a gas moving path 13 connected from the suction port 1 to the main crater 11 is formed inside.
[0012]
However, in the above-mentioned conventional Bunsen gas burner, the gas injected from the nozzle 51 of the gas supply 5 is burned at the upper ends of the main burner 1 and the sub-burner 2 through the gas moving path of the burner together with the primary air by the injection pressure. Since a plurality of Bunsen burners 100 are connected in a row to form a burner assembly, the length of the flame is long, the flame temperature is high, and the load on the same area is high.
[0013]
Further, since the main vent 11 and the combustion of the gas through the secondary crater 21 sub burner 2 of the burner 1 is made, can not be sufficiently adjust the feed rate of air, carbon monoxide (CO) and nitrogen oxides (NO _x) Has the disadvantage of increasing the amount of wastewater and adversely affecting environmental pollution.
[0014]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to improve the combustion performance by increasing the air-fuel ratio between side burner assemblies of a Bunsen burner used in a gas water heater. Using an intermediate burner assembly composed of a plurality of first and second gas plates having alternately formed gas holes and lower gas holes, the overall flame length is reduced and the temperature of the flame is reduced. Lowering the load on the same area to reduce the generation of pollutants such as carbon dioxide and nitrogen oxides.
[0015]
[Means for Solving the Problems]
An object of the present invention described above is to form a gas moving pipe for moving gas and supplying the gas to an injection nozzle, and a fitting hole into which the injection nozzle of the gas moving pipe is inserted to block a suction port of a Bunsen gas burner. And a side burner assembly forming a joint surface portion and an extended bent surface portion in which a metal plate material is overlapped so as to form a gas moving path for guiding a gas moving through the suction port. In a gas burner, a plurality of side gas discharge holes formed so as to be continuous with an upper part of a gas transfer path of the side burner assembly and formed in a row on both side surfaces at regular intervals, and an upper side portion between the side gas discharge holes. Upper gas discharge holes formed horizontally at a constant interval and an upper gas hole opened to the upper side so that gas is supplied to the side from the side gas discharge holes, and an upper gas hole opened to the lower side. Been lower gas holes is achieved by providing a Bunsen gas burner of a gas water heater, which is composed of formed intermediate burner assembly to propagate a flame at upper and lower portions are formed alternately.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 5 is a perspective view showing the configuration of the Bunsen gas burner according to the present invention, FIG. 6 is an assembled state diagram of the Bunsen gas burner according to the present invention, and FIG. 7 is an exploded perspective view of the intermediate burner assembly according to the present invention. FIG. 8 is a sectional view showing an assembled state of the Bunsen gas burner according to the present invention, and FIG. 9 is a view showing a use state of the Bunsen gas burner according to the present invention.
[0017]
In the configuration of the present invention, a gas moving pipe 240 for moving gas and supplying it to the injection nozzle 242 and a fitting hole 252 into which the injection nozzle 242 of the gas moving pipe 240 is inserted are formed. A separation partition plate 250 contacted so as to shut off the opening 210 and a metal plate material are overlapped so as to form a gas transfer path 212 for guiding the gas moving through the suction opening 210 to form a joining surface portion 216 and an extended bent surface portion 214. In the Bunsen gas burner A including the side burner assembly 200 to be formed, a large number of side gas discharge holes are formed in the gas moving path 212 of the side burner assembly 200 so as to be continuous with the upper portion and formed in a row at both sides at regular intervals. 222 and a plurality of upper gas exhaust holes formed by being horizontally cut from the upper side surface between the side gas exhaust holes 222 and being formed at regular intervals. A hole 224, an upper gas hole 234 opened upward so that gas is supplied to the side from the side gas discharge hole 222, and a lower gas hole 238 opened below are alternately formed, and a flame is formed on the upper and lower portions. It comprises an intermediate burner assembly 230 that is configured to propagate.
The intermediate burner assembly 230 includes a first gas plate 232 having the upper gas holes 234 formed on the upper side and a lower gas hole 238 formed on the lower side, and the second gas plates 236 are alternately overlapped with each other. Let it form.
[0018]
Further, a narrow portion 218 having a narrow width is formed above the gas moving path 212 of the side burner assembly 200, and a wide expanding portion 220 is formed continuously with the narrow portion 218.
[0019]
Then, the side burner assembly 200 and the intermediate burner assembly 230 are joined to each other by spot welding (point welding).
[0020]
Hereinafter, the operation and effect of the present invention will be described.
As shown in FIGS. 6 and 9, the gas moved through the gas supply pipe 24 is sucked into the side burner assembly 200 of the Bunsen burner A through the injection nozzle 242 and the fitting hole 252 of the separation partition plate 25. It flows into the mouth 210.
[0021]
Then, the gas moving to the suction port 210 moves to the narrow part 218 and the expansion part 220 through the gas moving path 212, and the gas flowing into the expansion part 220 is thoroughly mixed while being appropriately mixed with the primary air. And a flame is ejected to the outside through the side gas discharge holes 222 or the upper gas discharge holes 222.
[0022]
As shown in FIG. 9, the gas discharged from the outer surface of the side burner assembly 200 is mixed with the secondary air flowing into the combustion chamber by a blower (not shown) and is burned on the surface of the lamination part. You.
[0023]
At this time, the gas supplied through the side gas discharge holes 222 or the upper gas discharge holes 222 of the side burner assembly 200 is supplied in such a manner that the air ratio becomes low (fuel-rich mixed gas), so Although the strength is high, there is a great risk of generating nitrogen oxides.
[0024]
Meanwhile, the gas moved to the upper gas hole 234 of the first gas plate 232 and the lower gas hole 238 of the second gas plate 236 of the intermediate burner assembly 230 through the side gas discharge hole 222 has a large air ratio. (Air-rich mixture), thus reducing the overall flame length, lowering the flame temperature, reducing the load on the same area and reducing the generation of carbon dioxide and nitrogen oxides.
[0025]
That is, the gas moved to the side gas discharge holes 222 is sufficiently supplied with air through the upper and lower gas holes 234 and 238 of the first and second gas plates 232 and 236 to increase the air ratio and generate a flame. it can.
[0026]
【The invention's effect】
As described above, if the Bunsen gas burner of the gas water heater according to the present invention is used, the upper gas hole which improves the combustion performance by increasing the air-fuel ratio between the side burner assemblies of the Bunsen burner used in the gas water heater. Using an intermediate burner assembly composed of a plurality of first and second gas plates having alternately formed lower and lower gas holes, the overall flame length is reduced and the flame temperature is reduced. Thus, the load on the same area can be reduced, and the generation of pollutants such as carbon dioxide and nitrogen oxides can be reduced to a minimum.
[Brief description of the drawings]
FIG. 1 is a perspective view of a conventional Bunsen gas burner.
FIG. 2 is a plan view of a conventional Bunsen gas burner.
FIG. 3 is a sectional view of a conventional Bunsen gas burner.
FIG. 4 is a diagram showing a usage state of a conventional Bunsen gas burner.
FIG. 5 is a perspective view showing a configuration of a Bunsen gas burner according to the present invention.
FIG. 6 is an assembled state diagram of the Bunsen gas burner according to the present invention.
FIG. 7 is an exploded perspective view of the intermediate burner assembly according to the present invention.
FIG. 8 is a sectional view showing an assembled state of the Bunsen gas burner according to the present invention.
FIG. 9 is a diagram showing a use state of the Bunsen gas burner according to the present invention.
[Explanation of symbols]
200 Side burner assembly 210 Suction port 212 Gas transfer path 214 Extended bent surface section 216 Joining surface section 218 Narrow section 220 Extended section 222 Side gas exhaust hole 224 Upper gas exhaust hole 230 Intermediate burner assembly 232 First gas plate 234 Upper gas hole 236 Second gas plate 238 Lower gas hole 240 Gas supply pipe 242 Injection nozzle

Claims (3)

A gas transfer pipe (240) for transferring the gas to supply it to the injection nozzle (242) and a fitting hole (252) into which the injection nozzle (242) of the gas transfer pipe (240) is inserted are formed. A separating partition plate (250) contacted to shut off the suction port (210) of the burner A and a gas transfer path (212) for guiding gas moving through the suction port (210) and the suction port (210) are formed. In a Bunsen gas burner (A) comprising a side burner assembly (200) that forms a joining surface (216) and an extended bent surface (214) by overlapping metal plates so that
A plurality of side gas discharge holes (222) formed at an upper portion of the gas transfer path (212) of the side burner assembly (200) so as to be continuous with each other and formed at regular intervals in a line on both side surfaces;
An upper gas discharge hole (224), which is horizontally cut at an upper side portion between the side gas discharge holes (222) and is formed at a certain interval;
An upper gas hole (234) opened upward and a lower air intake hole (238) opened downward are formed alternately so that gas is supplied to the side from the side gas discharge hole (222), and the gas flows in from the lower part. And an intermediate burner assembly (230) formed to mix the air to be supplied and the gas supplied from the side gas discharge holes (222) and propagate the flame to the upper portion. Bunsen gas burner. The intermediate burner assembly (230) includes a first gas plate (232) having the upper gas hole (234) formed on the upper side and a second gas plate having the lower gas hole (238) formed on the lower side. The Bunsen gas burner for a gas water heater according to claim 1, wherein (236) is alternately formed. A narrow portion (218) having a narrow width is formed above the gas movement path (212) of the side burner assembly (200), and a wide expansion portion (220) is formed continuously with the narrow portion (218). The Bunsen gas burner for a gas water heater according to claim 1, wherein:

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