JP3011630B2 - Combustion equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion chamber for burning a mixture of fuel gas and combustion air at one end, and a mixing chamber communicating with the combustion port. A plurality of flat combustion sections formed with an introduction port for introducing combustion air are arranged side by side at intervals, and a discharge port for discharging combustion air or a lean mixture is on the same side as the flame port. Equipped,
A ventilation chamber communicating with the discharge port and an air introduction port for introducing combustion air into the ventilation chamber are formed between adjacent combustion sections using the combustion section as a constituent member, and an introduction port for the combustion section. The present invention relates to a combustion apparatus provided with gas supply means for supplying fuel gas to the fuel cell, and air supply means for supplying combustion air to an inlet of the combustion section and the air inlet.

[0002]

2. Description of the Related Art In such a combustion apparatus, in order to lower the combustion temperature of the entire apparatus and reduce the generation of NOx, which is a nitrogen oxide, as much as possible, combustion air or a lean air-fuel mixture is interposed between adjacent combustion sections. It has a discharge port for discharging, and conventionally,
As shown in FIG. 7, in the combustion device as described above,
Combustion air or light air-fuel mixture discharged at high speed from a discharge port 04 is provided on both left and right sides of a flame forming part 03 of a rich fuel port 02 for burning a rich mixture formed in a combustion burner 01 as a combustion part. Is arranged to reduce the flow velocity of the combustion air or the lean air-fuel mixture near the discharge port portion 07 adjacent to the flame forming section 03, thereby reducing the flow rate of the flame forming section 03.
Without lifting the flame formed in step (1), the blowout of the flame can be prevented as much as possible (for example, see Japanese Utility Model Laid-Open No. 61-149615).

In this prior art, only the reduction of the flow velocity of the combustion air or the lean air-fuel mixture near the discharge port portion 07 adjacent to the flame forming section 03 is considered, and the adjacent combustion burners 01 Since the resistance plate 05 is partially arranged only on the combustion burner 01 side of the adjacent space, a narrow discharge port 04 is formed between the resistance plates 05 facing each other, and this narrow discharge port 04 is formed. From the discharge port 04, as shown by the arrow in the figure, combustion air or a light mixture is discharged at a high speed.

[0004]

Therefore, when the combustion device is ignited, the flame forming part 03 of the specific combustion burner 01 is used.
Flames formed by igniting the adjacent combustion burners 01
There is a drawback that the so-called fire transfer performance is deteriorated by sequentially igniting the flame forming part 03 of the first embodiment. That is, since the narrow discharge port 04 is formed between the flame forming portions 03 of the adjacent combustion burners 01, the flame formed in the flame forming portion 03 is transmitted to the flame forming portion 03 of the adjacent combustion burner 01. When the flame is to be transferred, the flame is easily blown off by the combustion air or the light air-fuel mixture discharged at a high speed from the narrow discharge port 04, and the transfer of the fire is hindered.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to improve fire-burning performance. Another object is to minimize the blowout of the flame formed in the flame forming section and to enable stable combustion,
The purpose is to improve fire transfer performance.

[0006]

According to the combustion apparatus of the present invention, a flame opening for burning a mixture of fuel gas and combustion air is formed on one end face, and a mixing chamber communicating with the flame opening is provided. A plurality of flat combustion parts formed with an inlet for introducing fuel gas and combustion air into the chamber are arranged side by side at intervals,
A discharge port for discharging combustion air or a lean air-fuel mixture is provided on the same side as the flame port, a ventilation chamber communicating with the discharge port, and an air introduction port for introducing combustion air into the ventilation chamber, A gas supply means formed between adjacent combustion sections with the combustion section as a constituent member and supplying fuel gas to an inlet of the combustion section, and combustion air supplied to an inlet of the combustion section and the air inlet. a combustion apparatus in which the air supply means for supplying is provided, its first characterizing feature comprises a plurality of flame formation portion to which the flame hole is spaced apart along its length, the ejection Combustion air discharged from the outlet or
Is a straightening plate that straightens the lean mixture in the longitudinal direction of the discharge port.
Along the corresponding portion of the discharge port adjacent to the specific flame forming section of the flame forming section, the flow rate of the combustion air or the lean mixture discharged from this discharge port is set between the adjacent combustion sections. A resistor to be lowered is disposed over the entire length of the adjacent space, and the current plate is formed by partially expanding.
The present invention is characterized in that a bent portion is formed on the resistor .

[0007]

[0008]

The second characteristic configuration is the same as the first characteristic configuration , wherein a plurality of the rectifying plates are juxtaposed at intervals in a direction orthogonal to the longitudinal direction of the discharge port. The rectifying plate arranged on the side of the combustion portion is provided with a bulging portion bulging toward the flame forming portion, corresponding to each of the flame forming portions.

[0010] A third feature configuration is the first or second feature configuration.
In the above, the bent portion is also used as an interval holding member for holding the adjacent interval between the adjacent combustion portions at a constant interval.

[0011] A fourth characteristic structure is the first, second or third feature .
In the characteristic configuration , a discharge port formed between the adjacent combustion sections is configured as a light flame port for burning a light air-fuel mixture, and the ventilation chamber communicating with the light flame port generates a light air-fuel mixture. A lean gas passage having a discharge port for ejecting a fuel gas or a mixture for generating a lean gas mixture into the lean gas mixing chamber, and a fuel gas flowing into the lean gas passage. The present invention is characterized in that a lean gas supply means for supplying the gas is provided, and the combustion section is configured as a rich combustion section for burning a rich air-fuel mixture.

A fifth characteristic configuration is that, in the fourth characteristic configuration, when the lean gas passage is viewed from the rich combustion port of the rich combustion section in a direction in which the mixture is discharged, the rich combustion is performed. It is located at a position that overlaps with the part.

[0013]

The operation of the first characteristic configuration is as follows.
The flow velocity of the combustion air or the lean mixture discharged from the discharge port adjacent to the specific flame forming section of the flame forming section becomes slow over the entire length of the adjacent space between adjacent combustion sections, and the specific flame When the flame formed in the forming section attempts to move to the flame forming section of the adjacent combustion section, the flame is not easily blown off by the combustion air or the lean air-fuel mixture.

Further, with the combustion air or pale mixture was rectified it can be discharged from the discharge port by the rectifying plate, to rectify the light mixture, the pale mixture which tends discharged from the discharge port It can be cooled by the current plate. By forming the resistor with a bent portion formed by bending a straightening plate disposed along the longitudinal direction of the discharge port, a resistor is separately manufactured, and further, it is not necessary to separately attach the resistor. .

In addition to the above-described operation, the bent portion formed by partially swelling the current plate is not only used as a resistor, but also as a resistor.
The panel strength of the current plate can be increased.

The operation of the second characteristic configuration is as follows in addition to the operation of the first characteristic configuration . Combustion air or lean air-fuel mixture that has been effectively rectified by the plurality of rectifying plates can be discharged from the discharge port. The cooling plate can be cooled effectively. At the discharge port between each of the straightening plates and the flame forming portion of the plurality of straightening plates disposed on the side of the combustion section, the swelling portion provided on the straightening plate has a combustion air or a lean air-fuel mixture. , And the flow velocity of the combustion air or the lean air-fuel mixture near the flame forming portion becomes slow, and each of the flames formed in the flame forming portion becomes difficult to lift.

The operation of the third characteristic configuration is the first or second operation.
In addition to the operation by the characteristic configuration, it is not necessary to separately manufacture an interval holding member for keeping the adjacent interval between adjacent combustion sections at a constant interval, and further to separately install the interval holding member.

The operation of the fourth feature configuration is the first, second or
In addition to the operation of the third characteristic configuration , a so-called concentration combustion device can be configured.

The operation according to the fifth characteristic configuration is the same as the operation according to the fourth characteristic configuration, except that the lean gas passage is not located in the lean mixing chamber formed between the rich combustion sections, The air is less likely to become a resistance when passing through the light mixing chamber.

[0020]

The effects of the first characteristic configuration are as follows. When a flame formed in a specific flame forming section attempts to move to a flame forming section in an adjacent combustion section, the flame is not easily blown off by combustion air or a light air-fuel mixture. The part is easy to ignite, and the fire transfer performance is improved.

Further , since the rectified combustion air or the lean air-fuel mixture can be discharged from the discharge port, it is easy to stabilize the combustion, and when the lean air-fuel mixture is rectified, the lean air-fuel mixture can be cooled. Can prevent fire. In particular, since it is not necessary to separately manufacture the resistor and separately assemble the resistor, the structure and the assembly can be simplified.

In addition to the above-described effects, the panel strength of the current plate can be increased, so that a thinner current plate can be used to reduce the weight of the entire apparatus.

The effect of the second characteristic configuration is as follows in addition to the effect of the first characteristic configuration . Since the rectified combustion air or lean air-fuel mixture can be discharged from the discharge port, combustion can be further stabilized, and when rectifying the lean air-fuel mixture, the lean air-fuel mixture can be effectively cooled. In this way, flashback can be further prevented. In particular, since the flames formed in each of the flame forming parts are difficult to lift, it is necessary to improve the fire transfer performance while minimizing the blowout of the flame formed in the flame forming parts and enabling stable combustion. Can be.

The effect of the third feature structure, the first or second
In addition to the effect of the characteristic configuration, since it is not necessary to separately manufacture the spacing member and separately assemble the spacing member, the structure and the assembly can be simplified.

The effect of the fourth characterizing feature is, first, second addition
In addition to the effect of the third feature configuration , since it is possible to configure a lean-burn device, while securing a desired thermal power,
By lowering the combustion temperature of the entire apparatus, the generation of nitrogen oxides can be reduced as much as possible.

The effect of the fifth characteristic configuration is, in addition to the effect of the fourth characteristic configuration, because the lean air-fuel mixture does not easily become a resistance when passing through the lean-air mixing chamber. Pressure loss can be reduced.

[0027]

1 and 2 show, for example, a combustion device used for a burner unit or the like of a hot water supply device. A burner case 1 has a ventilation wall 3 in which a number of first ventilation holes 2 are formed. A plurality of rich burners 5 as flat combustion parts are accommodated in the box-like frame 4 in a positioned state, and these rich burners 5 are accommodated therein.
Are arranged in parallel at a predetermined interval.

An igniter 53 and a box-shaped fuel gas supply chamber 6 are attached to the burner case 1. The igniter 53 is provided corresponding to the longitudinal center of the rich burner 5 disposed at one end. , Burner case 1 and fuel gas supply chamber 6
And the box-shaped frame 4, an air ventilation path 8 is formed so as to surround the peripheral wall 7 of the box-shaped frame 4, and a large number of second ventilation holes 9 are formed in a lower portion of the peripheral wall 7. Have been.

The bottom wall 10 and the ventilation wall 3 of the burner case 1
An air discharge port 12 of a fan F as an air supply means is opened in the bottom wall 10, and air discharged from the air discharge port 12 to the air chamber 11 is formed in a box shape. The air flows into the inside of the frame 4 and the ventilation path 8,
The air that has flowed into the burner case 1 is mainly used for generating a gas mixture with a fuel gas described later, and the remainder is discharged upward along the inner surface of the burner case 1.

Each of the rich combustion burners 5 has a narrow flame plate 14 in which a flat rich flame port 13 is formed, and a flat plate whose upper end is connected to the periphery of the flame plate 14. A rich mixing chamber 17 communicating with the rich flame port 13 is provided below the combustion case 16 having a cylindrical wall 15.
The fuel gas and the combustion air supplied to the rich mixing chamber 17 are provided with a rich inlet 18 for introducing a fuel gas for producing a rich air-fuel mixture and combustion air. 17
The mixture is mixed in the process of passing through the combustion case 16 to generate a rich air-fuel mixture, and the generated rich air-fuel mixture is discharged from the rich flame port 13 and burned.

The thickening flame port 13 is provided with a plurality of flame forming portions 1.
9 are arranged at predetermined intervals along the longitudinal direction of the flame plate 14, and these flame forming portions 19 have V-shape in plan view arranged at both longitudinal ends of the flame plate 14. There are two types of end flame forming sections 20, and a plurality of intermediate flame forming sections 21 arranged at intermediate positions between these end flame forming sections 20, and each of the intermediate flame forming sections 21 is a flame port plate length. It is configured by forming three slit-shaped mixture jets that are long in a direction perpendicular to the direction.

A gas passage 28 for light gas having an ejection hole 27 for ejecting a mixture for producing a light mixture into a ventilation chamber 23 as a mixture chamber for light, which will be described later, below the burner 5 for rich combustion.
And a lean inlet 29 for introducing fuel gas and combustion air into the lean gas passage 28.

The burner 5 for rich combustion and the gas passage 2 for lean combustion
8 and the light inlet 29 are formed by bonding a series of bent metal plates to each other by spot welding or the like, and the light gas passage 28 is provided with a rich mixture from the rich flame port 13 of the burner 5 for rich combustion. When viewed in the air discharge direction, the burner 5 for rich combustion is disposed at a position vertically overlapping with the burner 5, and each of the rich inlet 18 and the light inlet 29 is a through hole formed in the peripheral wall 7 of the box-shaped frame 4. It is connected to the.

The flame plate 14 of the adjacent rich combustion burner 5
A discharge port 22 for discharging combustion air or a lean air-fuel mixture is formed between the burners 5, and the flat burner 5 is used as a component of the discharge port 22 to form a flat space formed between the burners 5. The space is formed in a ventilation chamber 23 communicating with the discharge port 22, and the first ventilation hole 2 communicating with the ventilation chamber 23 in a state positioned between the burners 5 for rich combustion is provided in the ventilation chamber 23 for combustion. An air inlet for introducing air is provided, and a side portion of the ventilation chamber 23 on the side of the combustion case 16 is formed as a rectifying passage 24 for rectifying combustion air or a lean mixture discharged from the discharge port 22.

As shown in FIG. 3, four rectifying plates 25, 26 made of metal are arranged along the longitudinal direction of the discharge port 22 in each of the rectifying passages 24, as shown in FIG.
Is projected above the upper surface of the flame port plate 14,
Two straightening plates 25 and 26 arranged side by side on one side of one rich combustion burner 5 are arranged side by side in the direction perpendicular to the longitudinal direction of the discharge port 22 at intervals, and each set is Are pre-assembled at intervals on both sides of the combustion case 16 of each burner 5 for rich combustion.

As described above, the current plates 25 and 26 are connected to the flame port plate 1.
4, the current plate 25,
Since the heat radiation area of the air-fuel mixture 26 is increased, when the light air-fuel mixture described below is discharged from the discharge port 22, the light air-fuel mixture can be effectively cooled, and the light air-fuel mixture is positioned higher than the rich air-fuel mixture. Can be burned.

The first straightening plate 25 arranged on the side of the rich combustion burner 5 of the two straightening plates 25 and 26 as a set corresponds to the first flame forming portion 21 and corresponds to the first straightening plate 25. First bulging portions 46 that partially bulge toward the intermediate flame forming portion 21 as bent portions formed by bending the current plate 25 are separately provided.

The rectifying plate 25, which is a pair of the two plates,
26, the second rectifying plate 26 disposed on the outer side away from the rich combustion burner 5 includes the first rectifying plate 25 provided on the first rectifying plate 25.
The second rectifying plate 26 is bent corresponding to each of the first bulging portion 46 disposed on both ends of the rectifying plate and the first bulging portion 47 disposed at the center of the rectifying plate. A second bulging portion 48 that bulges partially is provided on the first bulging portion side as the formed bent portion.

Further, the second rectifying plate 26 is bent above the second bulging portion 49 provided corresponding to the first bulging portion 47 disposed in the center of the rectifying plate of the second bulging portion 48. A third bulging portion 50 bulging in a direction opposite to the bulging direction of the second bulging portion 49 is provided as a bent portion formed as a result.

The first rectifying plate 25 and the second rectifying plate 26 are
The first current plate 25 connects each of the first bulging portions 46 to the combustion case 1.
The second rectifying plate 26 is in contact with the six side surfaces, and the second rectifying plate 26 is in contact with each of the second bulging portions 48 on the concave side of the corresponding first bulging portion 46. Adjacent rich combustion burners 5 which are assembled and fixed to each other in advance are housed in the box-shaped frame 4 in a state where the third bulging portions 50 of the second rectifying plate 26 are brought into contact with each other.

As shown in FIGS. 4 and 5, a portion of the intermediate flame forming portion 21 corresponding to the discharge port 22 adjacent to the flame forming portion 51 disposed at the center is provided at the center of the first straightening plate 25. A resistor 52 composed of the arranged first bulging portion 47, a second bulging portion 49 adjacent to the first bulging portion 47, and a third bulging portion 50 which is in contact with each other is formed. With this resistor 52, the flow velocity of the combustion air or the light air-fuel mixture discharged from the discharge port 22 adjacent to the flame forming section 51 is reduced over the entire length of the adjacent interval between the adjacent rich combustion burners 5, The improvement of the fire transfer performance from the rich burner burner 5 arranged on one end side of the burner case 1 to the rich burner burner 5 arranged on the other end side is achieved.

The first bulging portion 47, the second bulging portion 49, and the third bulging portion 50 constituting the resistor 52 are arranged at a predetermined interval between the adjacent rich combustion burners 5. And is also used as an interval holding member.

The fuel gas supply chamber 6 is provided with a rich mixing chamber 1.
7 includes a rich gas nozzle 30 as a rich gas supply means for supplying a rich fuel gas, and a lean gas nozzle 31 as a lean gas supply means for supplying a lean fuel gas to the lean gas passage 28. Each of the thickening gas inlets 30 is attached in a state corresponding to each of the thickening inlets 18 and the light inlets 29.
Are inserted into the corresponding thick inlets 18, and each of the light gas nozzles 31 is inserted into the corresponding light inlet 29. The lean gas nozzle 31 is not inserted into the lean inlet 29 provided below the rich burner 5 at the right end shown in FIG.

When fuel gas is blown from the enrichment gas nozzle 30 into the enrichment inlet 18, the air in the ventilation passage 8 is combusted at a predetermined rate into the enrichment inlet 18 by an ejector action. They are sucked and mixed in the process of passing through the rich mixing chamber 17 to form a rich mixture,
The generated rich air / fuel mixture is discharged from the rich flame opening 13.

When fuel gas is blown from the lean gas nozzle 31 into the lean inlet 29, the air in the ventilation passage 8 is burned at a predetermined ratio into the lean inlet 29 by the ejector action. Suctioned, light gas passage 28
Are mixed in the process of passing through to generate a mixture for generating a lean mixture, and the generated mixture is ejected from the ejection holes 27 to the ventilation chamber 23.

As shown in FIG. 6, the fuel gas supply chamber 6 is connected to a fuel gas chamber 3 for communication with a fuel gas nozzle 30 as shown in FIG.
Fuel gas chamber 33 in which the gas nozzle 2 communicates with the gas nozzle 31
A first partition wall 34 is provided, and the rich fuel gas chamber 32 communicates with a first rich fuel gas chamber 35 in which every other rich gas nozzle 30 communicates with the remaining rich gas nozzle 30. The second waveform of the waveform partitioned into the second rich fuel gas chamber 36
A partition wall 37 is provided.

The lean fuel gas chamber 33 is provided with a lean fuel gas supply path 39 via a lean flow control valve 38, and the first rich fuel gas chamber 35 is provided with a first rich flow control valve 40. First
The rich fuel gas supply path 41 is connected to the second rich fuel gas chamber 36 via a second rich fuel flow control valve 42, and the second rich fuel gas supply path 43 is connected to the second rich fuel gas chamber 36. The passage 39 and the first and second rich fuel gas supply passages 41 and 43 are connected to a fuel gas supply passage 45 via a main gas amount adjusting valve 44.

When the combustion load is high and the load is high, fuel gas is supplied to each of the lean fuel gas chamber 33, the first rich fuel gas chamber 35, and the second rich fuel gas chamber 36, and the combustion load is increased. Is small and the light flow control valve 38 is closed, and the first rich flow control valve 40 or the second rich flow control valve 4 is closed.
2 is closed to supply fuel gas to either the first rich fuel gas chamber 35 or the second rich fuel gas chamber 36,
When the combustion load is medium and medium, the light flow control valve 38
The fuel gas is supplied to both the first rich fuel gas chamber 35 and the second rich fuel gas chamber 36 by closing only the fuel gas chamber 35.

Therefore, at the time of a high load, all of the discharge ports 22 formed between the flame port plates 14 of the adjacent rich combustion burners 5 serve as light flame ports for burning a light air-fuel mixture. The ventilation chambers 23 formed between the burners 5 function as light mixing chambers for generating a light air mixture, respectively, and are discharged from the rich air port 13 and the light air port 22. The lean mixture is burned. In addition, the air-fuel mixture blown out from the ejection hole 27 into the light-mixing chamber 23 and the air flowing into the light mixing chamber 23 through the first ventilation hole 2 are mixed with the light-mixing chamber 23. Are produced by mixing in the process of passing through.

When the load is medium or low, the air-fuel mixture is not ejected from the ejection holes 27, and the air flowing in through the first ventilation holes 2 is used as secondary air for the burner 5 for rich combustion in the ventilation chamber 23. And is discharged from the discharge port 22.

[0051] [Other embodiments] 1. The resistor may be arranged at a different position between adjacent combustion sections. 2. The combustion device according to the present invention may not burn the lean mixture. 3. In the above embodiment, each of the lean gas inlets 29 and each of the lean gas nozzles 31 are connected to each other so that only the lean fuel gas is supplied to the lean gas conducting path 28, A lean fuel gas spouted into the chamber 23;
A light mixture may be generated by mixing the combustion air introduced into the ventilation chamber 23 from the first ventilation hole 2.

Incidentally, reference numerals are written in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view.

FIG. 2 is a partially cutaway perspective view.

FIG. 3 is a perspective view of a main part.

FIG. 4 is a sectional view of a main part.

FIG. 5 is a plan view of a main part.

FIG. 6 is a partial cross-sectional side view of a main part.

FIG. 7 is a sectional view of a main part showing a conventional example.

[Explanation of symbols]

 2 Air inlet 5 Burning section (rich burning section) 13 Flame port (rich burning port) 17 Mixing chamber 18 Inlet 19 Flame forming section 22 Discharge port (light burning port) 23 Ventilation chamber (light mixing chamber) 25 Rectifying plate 26 Rectifying plate 27 Spout port 28 Light gas conduction path 30 Gas supply means 31 Light gas supply means 46 Swelling part 47 Bent part 49 Bent part 50 Bent part 51 Specific flame forming part 52 Resistor F Air supply means

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shinobu Ishihara 1-152 Oka, Minami-shi, Minato-ku, Osaka-shi, Osaka (56) References JP-A-7-269813 (JP, A) JP-A Heisei 6-193832 (JP, A) Japanese Utility Model Showa 62-118923 (JP, U) Japanese Utility Model Showa 62-156217 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F23D 14/08 F23C 11/00

Claims (5)

(57) [Claims] A flame port (13) for burning a mixture of fuel gas and combustion air is formed at one end face, and the flame port (1) is formed.
A mixing chamber (17) communicating with the mixing chamber (3);
A plurality of flat combustion sections (5) having an inlet (18) through which fuel gas and combustion air are introduced are arranged side by side at intervals to discharge combustion air or a lean air-fuel mixture. A discharge port (22) is provided on the same side as the flame port (13).
A ventilation chamber (23) communicating with 2), and this ventilation chamber (23);
And an air inlet (2) for introducing combustion air into the combustion section (5) as a constituent member between adjacent combustion sections (5), and an inlet (2) of the combustion section (5). A gas supply means (30) for supplying fuel gas to 18), and an air supply means (F) for supplying combustion air to the inlet (18) of the combustion part (5) and the air inlet (2). Wherein the flame outlet (13) comprises a plurality of flame forming portions (19) arranged at intervals along the longitudinal direction thereof, and discharges from the discharge outlet (22). Combustion air or light
Rectifying plates (25, 26) for rectifying the air-fuel mixture are the discharge ports
(22), and are arranged along the longitudinal direction of the specific flame forming portion (5) of the flame forming portion (19).
In a portion corresponding to the discharge port (22) adjacent to 1), the flow rate of the combustion air or the lean mixture discharged from this discharge port (22) is set over the entire length of the adjacent interval between the adjacent combustion sections (5). A resistor (52) for lowering is provided, and the current plate (25, 26) is formed by partially bulging.
Bent portions (47, 49, 50) are attached to the resistor (52).
Combustion device that is composed . 2. A plurality of rectifying plates (25, 26) are arranged side by side at intervals in a direction orthogonal to the longitudinal direction of the discharge port (22). The current plate (25) arranged on the side of the combustion section (5) has the flame forming section (1) corresponding to each of the flame forming sections (19).
The combustion device according to claim 1, wherein a bulging portion (46) bulging to the 9) side is provided separately. Wherein the bent portion (47,49,50) comprises adjacent the combustion portion (5) How to claim 1 or 2, wherein the distance between the adjacent is also used in the spacing member for holding constant spacing Combustion equipment. 4. A discharge port (22) formed between the adjacent combustion sections (5) is configured as a light flame port for burning a lean air-fuel mixture, and communicates with the light flame port (22). The venting chamber (23) is configured as a lean mixing chamber for generating a lean air-fuel mixture, and an outlet (27) for jetting a fuel gas or air-fuel mixture for generating a lean air-fuel mixture into the lean-air mixing chamber (23). And a light gas supply means (31) for supplying fuel gas to the light gas passage (28), and the combustion section (5) is concentrated. 4. The combustion apparatus according to claim 1 , wherein the combustion apparatus is configured as a rich combustion section for burning an air-fuel mixture. 5. The rich gas passage (28) overlaps with the rich combustion portion (5) when viewed from the rich mixture outlet (13) of the rich combustion portion (5) in the direction of air-fuel mixture discharge. The combustion device according to claim 4 , wherein the combustion device is disposed at a position.