KR20120017540A - Low noise pre-mixed burner - Google Patents
Low noise pre-mixed burner Download PDFInfo
- Publication number
- KR20120017540A KR20120017540A KR1020100080189A KR20100080189A KR20120017540A KR 20120017540 A KR20120017540 A KR 20120017540A KR 1020100080189 A KR1020100080189 A KR 1020100080189A KR 20100080189 A KR20100080189 A KR 20100080189A KR 20120017540 A KR20120017540 A KR 20120017540A
- Authority
- KR
- South Korea
- Prior art keywords
- burner
- plates
- inner plate
- low noise
- adjacent
- Prior art date
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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
- F23D14/46—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
- F23D14/586—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 formed by a set of sheets, strips, ribbons or the like
Abstract
Description
The present invention relates to a low-noise premixed burner, and more particularly, a plurality of cut portions are overlapped to form a plurality of salt holes by intersecting the cut portions between neighboring plates to form a plurality of salt holes. The present invention relates to a low noise premixed burner that can reduce the generation of noise due to resonance phenomena during combustion by differently configuring the natural frequencies of the respective salt holes.
In general, a gas burner used in a combustion device such as a boiler or a water heater may be classified into a Bunsen burner and a pre-mixed burner according to a method of mixing combustion gas and air.
The Bunsen burner is a burner that supplies the minimum primary air necessary for combustion from the nozzle injecting the gas and supplies the excess secondary air to the part where the flame is formed to realize complete combustion, and has excellent combustion stability. On the other hand, since the flame is formed by the secondary air, the flame length is long.
In contrast, the premix burner burns the premixed gas pre-mixed with the combustion gas and air in the mixing chamber, enabling operation at a low air ratio, enabling high efficiency, high load combustion, and reducing the overall flame length. At the same time, the temperature of the flame has the advantage of reducing the generation of pollutants such as carbon monoxide and nitrogen oxides.
Conventionally, Bunsen burners are mainly used, but in recent years, premixed burners are mainly used to reduce the generation of pollutants and to downsize the combustion chamber.
Conventional premixing gas burner has a structure in which the air supplied from the blower and the combustion gas supplied through the gas supply pipe is premixed in the burner body and supplied to the burner flame hole provided on the upper side.
Conventional burner flame has been used a structure in which a plurality of salt holes perforated on a plate or a plate made of a cylindrical, such a structure has a problem that a plurality of salt holes are formed in a constant size to amplify the noise during combustion.
That is, every machine and structure has multiple natural frequencies, and when an external force is applied to vibrate at one or more natural frequencies, it is 10 to 100 times more dynamic than when the same force is applied at frequencies lower or higher than the natural frequency. When the excitation frequency caused by the external force coincides with one or more natural frequencies, a lot of noise is generated due to the resonance phenomenon.
The frequency characteristics of the noise generated during the combustion of the premix burner depend on the size and shape of the salt holes.The natural frequency of the salt holes is determined by the size and shape of the salt holes, and the frequency of the noise is determined by the natural frequency of the salt holes. If the size and shape of a plurality of salt holes formed as in the prior art is the same, the natural frequencies of the respective salt holes are also the same. Therefore, when the external force having the same frequency as the natural frequency acts, the noise is amplified by the resonance phenomenon. There was this.
In addition, the salt structure of the conventional premixed burner has a problem that the burner combustion surface is deformed due to thermal stress or, in severe cases, the salt hole is damaged, causing incomplete combustion and backfire, and due to the heat of the burner surface during low load combustion. The expansion is cumulative to apply a large force to the structure to fix the burner has a problem that the structure is weakened and durability is reduced.
The present invention is devised to solve the above problems, and an object of the present invention is to provide a low noise premix burner that can prevent the generation of noise due to resonance phenomenon during combustion by improving the structure of the salt hole of the premix burner.
In addition, an object of the present invention is to provide a low noise premixed burner that can extend the service life by preventing a large force is applied to the structure for fixing the burner even if the thermal expansion due to the heat of the burner accumulated.
In the low noise premix burner of the present invention for realizing the above object, in the premix burner which mixes gas and air in advance to combust, a plurality of plates partially cut are overlapped to form a burner body part, The plurality of plates are disposed such that the cut portions between neighboring plates cross each other to form a mixed gas flow path and a plurality of salt holes, and the plurality of salt holes formed on the burner body part have different sizes.
In this case, the burner body part has a shape in which a part of a side surface is opened between neighboring plates, and an inner plate in which plates of different thicknesses overlap each other, and is coupled to a front surface and a rear surface of the inner plate, thereby transferring the mixed gas flow path. It may be configured to include an outer plate for sealing the rear surface.
The inner plate may further include a body member disposed on both sides, a plurality of T-shaped members disposed at different intervals between the body members, and horizontally disposed between the body members on both sides of the body member and the plurality of body members. It can be composed of a fixing member for coupling the T-shaped member of.
In addition, the inner plate is formed of a width length of the body member and the width of the upper end portion of the T-shaped member between the adjacent plates each different size, the bonding surface between the T-shaped members of the adjacent plate is arranged alternately Can be.
In addition, the salt hole may be formed by the space formed between the space between the upper end of the T-shaped member and the body member adjacent to the T-shaped member.
In addition, the position where the fixing member is coupled to the T-shaped member is spaced up and down between the adjacent inner plate, the mixed gas introduced into the lower portion of any one of the inner plate is switched to the flow path by the fixing member inside the adjacent inner plate After passing through the space may be configured to be discharged through the salt holes formed on the upper side.
According to the low noise premix burner according to the present invention, by forming a different size and shape of the plurality of salt holes formed in the premix burner to prevent the resonance phenomenon during the combustion of the burner to prevent the occurrence of noise caused when the resonance phenomenon occurs It works.
In addition, according to the present invention, a plurality of plates cut in part are overlapped to form burner flame portions, and the burner body portion and salt holes cross each other so that thermal expansion of the burner surface can be absorbed in its own structure, thereby supporting the burner. There is an effect to prevent a large force is applied to the structure to extend the endurance life of the burner.
In addition, according to the present invention, it is possible to improve the combustion efficiency by reducing the degree of deformation of the salt holes by the thermal stress to increase the stability of the flame and prevent incomplete combustion, the installation structure of the burner flame hole is simple and the installation work is easy The manufacturing time and cost of the burner can be reduced.
1 is a perspective view showing a salt portion of a low noise premix burner according to the present invention,
2 is a partially exploded perspective view of FIG. 1;
3 is a cross-sectional view taken along line AA of FIG. 1;
4 is a sectional view taken along the line BB of FIG.
5 is a sectional view taken along line CC of FIG. 1;
6 is a sectional view taken along the line DD of FIG. 1.
Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
1 is a perspective view showing a salt portion of a low noise premix burner according to the present invention, Figure 2 is a partially exploded perspective view of Figure 1, Figure 3 is a cross-sectional view taken along line A-A of FIG.
The low noise premixed burner according to the present invention is formed by overlapping a plurality of plates to form a flow path and a plurality of salt holes of a mixed gas of gas and air, and by configuring different sizes and shapes of the plurality of salt holes, By not overlapping, it is possible to greatly reduce the noise generated when burning the burner by avoiding the resonance phenomenon when the external excitation frequency coincides with the natural frequency of the salt hole.
In this configuration, the
1 and 2, the
The
In FIG. 1, reference numerals 110-1,120-1,130-1,140-1,150-1,160-1,170-1,110-2,120-2,130-2,140-2,150-2,160-2,170-2,110-3 overlap the plates 110,120,130,140,150,160,170 of the set unit repeatedly. It is preferable that the plates of each set unit are also formed in different thicknesses.
The bottom support frames 21 and 22 support both sides of the bottom surface in the longitudinal direction of the
In the present embodiment, the
Referring to FIG. 2, the first to seventh
The structure of the
In addition, the second
Here, the
The T-shaped
In this case, the thicknesses of the
The positions where the fixing
That is, as shown in FIG. 2, in the case of the second
As such, the fixing
In addition, the mixed gas introduced through the
In addition, at the upper end portions of the third
FIG. 4 is a sectional view taken along the line BB of FIG. 1 to show the
According to the low-noise pre-mixed burner according to the present invention as described above, by forming a burner body portion by overlapping a plurality of plates cut part of the inside, the flow path of the mixed gas is provided therein is configured to communicate with the salt hole of the upper side, Since a plurality of salt holes are formed in different sizes and different natural frequencies, resonance phenomenon can be avoided and noise can be greatly reduced.
In addition, according to the present invention, even if the plate constituting the burner body portion is thermally expanded by the accumulation of combustion heat generated during combustion, a large force is applied to the structure for fixing the burner body portion by absorbing the expanded volume through the gap between the overlapping plates. To prevent burnout and extend the burner's endurance life.
In addition, by overlapping a plurality of plates constitute a burner body portion formed with a mixed gas flow path and salt holes, and after mounting the fixed burner body portion on the bottom support frame, the installation work of the burner salt hole can be completed only by combining the side support frame. This facilitates the manufacturing of the burner and has the advantage of reducing the manufacturing cost.
1: flame part 10: burner body part
21,22:
100: inner plate 110: first inner plate
120: second inner plate 130: third inner plate
140: fourth inner plate 150: fifth inner plate
160: sixth inner plate 170: seventh inner plate
111a, 111b, 121a, 121b, 131a, 131b, 141a, 141b: body member
112,113,114,115,116,117,118: T-shaped member
119,129,139,149,159,169,179: fixing member
130a, 150a, 170a: Mixed gas inlet
110b, 120b, 140b, 160b: interior space
110c, 120c, 130c, 140c, 150c: Flame Attack
Claims (6)
A plurality of plates partially cut are overlapped to form a burner body part,
The plurality of plates are arranged so that the cut portions between neighboring plates cross each other to form a mixed gas flow path and a plurality of salt holes,
Low noise pre-mixed burner, characterized in that the plurality of salt holes formed on the burner body portion formed in a different size.
An inner plate in which a portion of a side surface is opened between neighboring plates, and plates formed of different thicknesses overlap each other;
And an outer plate coupled to the front and rear surfaces of the inner plate to seal the front and rear surfaces of the mixed gas flow path.
A body member disposed on both sides, a plurality of T-shaped members disposed at different intervals between the body members, and horizontally installed between the body members on both sides to couple the body member and the plurality of T-shaped members. Low noise pre-mix burner, characterized in that consisting of a fixing member.
The inner plate has a width length of the body member and a width length of the upper end portion of the T-shaped member between adjacent plates, respectively, different sizes, so that the joining surfaces between the T-shaped members of the adjacent plates are alternately disposed. Low noise premixed burner.
And the flame hole is formed by a space between the body member and the upper end of the T-shaped member adjacent thereto and a space between the upper end of the T-shaped member.
The position where the fixing member is coupled to the T-shaped member is spaced up and down between adjacent inner plates, so that the mixed gas flowing into the lower portion of any one inner plate is switched by the fixing member so that the flow path is changed into a space inside the adjacent inner plate. Low noise pre-mixed burner, characterized in that discharged through the salt hole formed on the upper side after passing through.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20100080189A KR101167792B1 (en) | 2010-08-19 | 2010-08-19 | Low noise pre-mixed burner |
PCT/KR2011/002930 WO2012023689A1 (en) | 2010-08-19 | 2011-04-22 | Low-noise, premixing burner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20100080189A KR101167792B1 (en) | 2010-08-19 | 2010-08-19 | Low noise pre-mixed burner |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20120017540A true KR20120017540A (en) | 2012-02-29 |
KR101167792B1 KR101167792B1 (en) | 2012-07-25 |
Family
ID=45605322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR20100080189A KR101167792B1 (en) | 2010-08-19 | 2010-08-19 | Low noise pre-mixed burner |
Country Status (2)
Country | Link |
---|---|
KR (1) | KR101167792B1 (en) |
WO (1) | WO2012023689A1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS643407A (en) * | 1987-04-16 | 1989-01-09 | Rinnai Kk | Combustion plate |
JP3298270B2 (en) * | 1993-10-19 | 2002-07-02 | 三浦工業株式会社 | Premix burner |
JPH09126424A (en) * | 1995-10-30 | 1997-05-16 | Osaka Gas Co Ltd | Burner |
KR20030021915A (en) * | 2001-09-10 | 2003-03-15 | 주식회사 경동보일러 | Bunsen gas burner of gas heater |
-
2010
- 2010-08-19 KR KR20100080189A patent/KR101167792B1/en active IP Right Grant
-
2011
- 2011-04-22 WO PCT/KR2011/002930 patent/WO2012023689A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2012023689A1 (en) | 2012-02-23 |
KR101167792B1 (en) | 2012-07-25 |
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