JP2004225970A - Forced air feed type composite combustion apparatus - Google Patents

Forced air feed type composite combustion apparatus Download PDF

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Publication number
JP2004225970A
JP2004225970A JP2003013022A JP2003013022A JP2004225970A JP 2004225970 A JP2004225970 A JP 2004225970A JP 2003013022 A JP2003013022 A JP 2003013022A JP 2003013022 A JP2003013022 A JP 2003013022A JP 2004225970 A JP2004225970 A JP 2004225970A
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Prior art keywords
air
air supply
supply passages
combustors
supply passage
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JP2003013022A
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Japanese (ja)
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JP3999133B2 (en
Inventor
Yoshihiko Takasu
芳彦 高須
Misako Jo
美砂子 城
Junichi Ogawa
純一 小川
Tsutomu Sofue
務 祖父江
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Rinnai Corp
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Rinnai Corp
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Priority to JP2003013022A priority Critical patent/JP3999133B2/en
Priority to KR10-2003-0096797A priority patent/KR100521387B1/en
Publication of JP2004225970A publication Critical patent/JP2004225970A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
    • F23M9/04—Baffles or deflectors for air or combustion products; Flame shields with air supply passages in the baffle or shield
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L3/00—Arrangements of valves or dampers before the fire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L5/00—Blast-producing apparatus before the fire
    • F23L5/02—Arrangements of fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent air for combustion from being fed to a burners 1, 2 with an irregular wind speed distribution because of disturbance of air flow caused at the time of passing through an arrangement part of a dumper member 12, in a forced air feed type composite combustion apparatus structured by joining a pair of air supply passages 6, 7 connected to a pair of burners 1, 2 and connecting them to single blower 9 and providing the dumper member 12 of which distribution rate of air flow amount to both air supply passages 6, 7 are variable at a convergence part 8 of the air supply passages. <P>SOLUTION: Throttle parts 13, 14 are respectively provided for air supply passages 1, 2 and air flow is straightened by the formed parts. Straightening action is effectively performed by forming a minimum section area parts of the throttle parts 13, 14 as a straight form extending straight for a predetermined length. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、給湯用燃焼器および風呂追い焚き用燃焼器といった互いに独立して作動する一対の燃焼器を備える強制給気式複合燃焼装置に関する。
【０００２】
【従来の技術】
従来、この種の燃焼装置において、一対の燃焼器にそれぞれ接続される一対の給気通路を合流させて単一の送風機に接続し、この送風機から両燃焼器に燃焼用空気を供給すると共に、各給気通路にそれぞれダンパを介設して、各燃焼器にその燃焼量に応じた風量で燃焼用空気を供給し得るようにしたものは知られている（例えば、特許文献１参照。）。
【０００３】
然し、このものでは、風量調整用のダンパを両給気通路に設けることから、コストが高くなる。そこで、両給気通路の合流部に、合流部に臨む一方の給気通路の入口部を閉鎖する位置から他方の給気通路の入口部を閉鎖する位置に亘って回動して、両給気通路への送風量の分配比率を可変する単一のダンパ部材を設け、このダンパ部材の回動制御により、各燃焼器にその燃焼量に応じた風量で燃焼用空気を供給し得るようにしたものも知られている（例えば、特許文献２参照）。
【０００４】
【特許文献１】
実開昭５９−９２３４３号公報（第３図）
【特許文献２】
特許第２５５９１５４号公報（第２頁、第２図〜第４図）
【０００５】
【発明が解決しようとする課題】
上記後者の従来技術によれば、燃焼用空気の風量調整用ダンパ部材が１個で足りるため、コストダウンを図れる利点があるが、ダンパ部材の配置部を通過する際に空気流に乱れを生じて流速分布が不均一になりやすく、燃焼器の全域に均一に燃焼用空気を供給できなくなる。
【０００６】
本発明は、以上の点に鑑み、給気通路における燃焼用空気の流速分布を均一化し得るようにした強制給気式複合燃焼装置を提供することをその課題としている。
【０００７】
【課題を解決するための手段】
上記課題を解決するために、本発明は、互いに独立して作動する一対の燃焼器を備え、両燃焼器にそれぞれ接続される一対の給気通路を合流させて単一の送風機に接続し、この送風機から両燃焼器に燃焼用空気を供給する強制給気式複合燃焼装置であって、両給気通路の合流部に、合流部に臨む一方の給気通路の入口部を閉鎖する位置から他方の給気通路の入口部を閉鎖する位置に亘って回動して、両給気通路への送風量の分配比率を可変する単一のダンパ部材を設けるものにおいて、各給気通路に、断面積を入口部よりも狭くした絞り部を介設している。
【０００８】
上記の構成によれば、ダンパ部材の配置部を通過する際に空気流の乱れを生じても、各給気通路の絞り部で空気流が整流される。そのため、各給気通路の絞り部の下流側での流速分布が均一化され、各燃焼器にその全域に亘って均等に燃焼用空気が供給され、燃焼状態が良好になる。
【０００９】
ここで、絞り部の最小断面積の部分を所定長さに亘って真直に延在するストレート形状に形成しておけば、絞り部における整流作用が一層効果的に発揮され、有利である。
【００１０】
また、各給気通路から供給される燃焼用空気の風量に合わせて各燃焼器に供給する燃料ガス量をフィードバック制御するため、各給気通路に風量検出手段を配置することがあるが、この場合、各給気通路に、絞り部の下流側に位置させて風量検出手段を設ければ、検出手段の配置箇所では空気流が整流されているため、空気流の乱れの影響で検出バラツキが生ずることを防止できる。
【００１１】
【発明の実施の形態】
図１は、横並びで第１と第２の一対の燃焼器１，２を並設した強制給気式複合燃焼装置を示している。ここで、一方の第１燃焼器１は、給湯用燃焼器であり、他方の第２燃焼器２は、風呂の追い焚き用燃焼器であって、互いに独立して作動されるものである。各燃焼器１，２は、それぞれ、燃焼胴３内に、下部のバーナ４と、上部の水熱交換機５とを収納して構成されている。
【００１２】
第１燃焼器１の燃焼胴３には、下方に伸びる第１給気通路６が接続され、第２燃焼器２の燃焼胴３にも、同様に、下方に伸びる第２給気通路７が接続されている。第１と第２の両給気通路６，７は、その下方で互いに合流し、この合流部８を介して単一の送風機９に接続され、送風機９により両給気通路６，７を介して両燃焼器１，２に燃焼用空気が供給される。
【００１３】
なお、各燃焼器１，２の燃焼胴３には、バーナ４の下側に位置させて、多数の透孔を形成した均圧板１０が配置されており、各給気通路６，７からの空気が燃焼胴３の最下部の分配空間１１から均圧板１０を介してバーナ４の配置部に導かれるようになっている。
【００１４】
両給気通路６，７の合流部８には、合流部８に臨む第１給気通路６の入口部６ａを閉鎖する位置と、合流部８に臨む第２給気通路７の入口部７ａを閉鎖する位置との間で回動自在な単一のダンパ部材１２が設けられており、ダンパ部材１２の回動で両給気通路６，７への送風量の分配比率を可変し得るようにしている。
【００１５】
ここで、ダンパ部材１２の回動角をある角度に固定した状態で送風機９の回転数を上昇させて送風量を増加させると、両給気通路６，７に供給される風量がダンパ部材１２の回動角に対応する所定の分配比率を保ったまま増加するが、ダンパ部材１２を一方の給気通路、例えば、第２給気通路７の入口部７ａの開度を狭める方向に回動した状態で送風機９からの送風量を増加させれば、第２給気通路７側の分配比率が小さくなっているため、第２給気通路７への供給風量を変えずに、第１給気通路６への供給風量を増加させることができる。また、ダンパ部材１２を第２給気通路７の入口部７ａの開度を広げる方向に回動した状態で送風機９からの送風量を減少させれば、第２給気通路７側の分配比率が大きくなっているため、第２給気通路７への供給風量を変えずに、第１給気通路６への供給風量を減少させることができる。従って、ダンパ部材１２の回動角と送風機９の回転数とを組み合わせて制御することにより、各燃焼器１，２から要求される風量に合わせて各給気通路６，７への供給風量を可変できる。
【００１６】
上記の如くダンパ部材１２を配置すると、ダンパ部材１２の配置部を通過する際に空気の流れに乱れを生じやすくなる。ここで、各給気通路６，７から各燃焼器１，２の分布空間１１に流入する空気流に乱れがあっても、ある程度の乱れであれば、均圧板１０の働きによりバーナ４の配置部に均一な流速分布で燃焼用空気を供給できる。然し、ダンパ部材１２の配置部を通過する際に生ずる空気流の乱れの程度は、ダンパ部材１２の回動角や風量によって変化し、各燃焼器１，２の分布空間１１に流入する空気流の乱れの程度も変化して、均圧板１０だけで流速分布を均一化することは困難である。
【００１７】
そこで、本実施形態では、各給気通路６，７に、断面積を入口部６ａ，７ａよりも狭くした絞り部１３，１４を介設している。各絞り部１３，１４の最小断面積の部分１３ａ，１４ａは、所定長さに亘って真直に延在するストレート形状に形成されており、絞り部１３，１４で空気流が効率よく整流されるようにしている。
【００１８】
また、絞り部１３，１４の流入部および流出部は、断面積が緩やかに変化するように形成されており、そのため、大きな圧損を生ずることなく整流化作用が発揮される。なお、最小断面積部分１３ａ，１４ａの入口部６ａ，７ａの断面積に対する面積比は、５０〜８０％にすることが望ましい。但し、面積比の下限は必要最大風量に応じて変化する。
【００１９】
以上の構成によれば、ダンパ部材１２の配置部を通過する際に空気流に乱れを生じても、絞り部１３，１４で整流されるため、各燃焼器１，２の分布空間１１と均圧板１０とを介してバーナ４にその全域に亘って均一な風速分布で燃焼用空気が供給され、バーナ４の燃焼状態は良好になる。
【００２０】
ところで、各燃焼器１，２の要求空気量に対し実際の供給空気量が若干ずれることがある。そのため、各給気通路６，７に圧力センサ等から成る風量検出手段１５を配置し、検出風量と要求風量との偏差に応じてバーナ４への供給ガス量を補正し、実際の供給空気量と供給ガス量とのバランスを取れるようにしている。この場合、風量検出手段１５の配置箇所に空気流の乱れが及ぶと、検出風量にバラツキを生ずる。そこで、本実施形態では、絞り部１３，１４の下流側に風量検出手段１５を配置している。絞り部１３，１４の下流側では空気流が整流されているため、バラツキを生ずることなく風量を検出できる。
【００２１】
以上、給湯用と追い焚き用の一対の燃焼器１，２を備える複合式燃焼装置に本発明を適用した実施形態について説明したが、独立して作動する一対の燃焼器を備える他の複合燃焼器にも同様に本発明を適用できる。
【図面の簡単な説明】
【図１】本発明の実施形態の燃焼装置の断面図。
【符号の説明】
１，２…燃焼器 ６，７…給気通路 ６ａ，７ａ…入口部 ８…合流部 ９…送風機 １２…ダンパ部材 １３，１４…絞り部 １３ａ，１４ａ…最小断面部分 １５…風量検出手段[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a forced-air-supply combined combustion device including a pair of independently operating combustors, such as a hot water supply combustor and a bath reheating combustor.
[0002]
[Prior art]
Conventionally, in this type of combustion device, a pair of air supply passages respectively connected to a pair of combustors are joined and connected to a single blower, and the combustion air is supplied from the blower to both combustors, There is known an arrangement in which a damper is provided in each air supply passage so that combustion air can be supplied to each combustor with an air flow according to the amount of combustion (for example, see Patent Document 1). .
[0003]
However, in this case, since the dampers for adjusting the air volume are provided in both air supply passages, the cost increases. Therefore, the two supply passages are pivoted from the position where the inlet of one of the supply passages facing the junction is closed to the position where the entrance of the other supply passage is closed. A single damper member is provided to vary the distribution ratio of the amount of air blown to the air passage, and by controlling the rotation of the damper member, combustion air can be supplied to each combustor with an amount of air corresponding to the amount of combustion. There is also a known one (for example, see Patent Document 2).
[0004]
[Patent Document 1]
JP-A-59-92343 (FIG. 3)
[Patent Document 2]
Japanese Patent No. 2559154 (Page 2, FIGS. 2 to 4)
[0005]
[Problems to be solved by the invention]
According to the latter conventional technique, there is an advantage that the cost can be reduced because only one damper member for adjusting the air volume of the combustion air is required, but the air flow is disturbed when passing through the arrangement portion of the damper member. As a result, the flow velocity distribution tends to be non-uniform, and the combustion air cannot be supplied uniformly to the entire area of the combustor.
[0006]
SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a forced-supply-type combined combustion device that can make the flow velocity distribution of combustion air in a supply passage uniform.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention includes a pair of combustors that operate independently of each other, merges a pair of air supply passages respectively connected to both the combustors, and connects to a single blower, A forced-supply type combined combustion device that supplies combustion air to both combustors from the blower, wherein a joining portion of the two supply passages is closed at an inlet of one of the supply passages facing the joining portion. The one provided with a single damper member that rotates over the position that closes the inlet of the other air supply passage and changes the distribution ratio of the air supply amount to both air supply passages. A throttle section having a smaller cross-sectional area than the inlet section is provided.
[0008]
According to the above configuration, even if turbulence of the air flow occurs when the air flow passes through the arrangement portion of the damper member, the air flow is rectified at the throttle portions of the respective air supply passages. Therefore, the flow velocity distribution on the downstream side of the throttle portion of each air supply passage is made uniform, and the combustion air is uniformly supplied to each combustor over the entire area, so that the combustion state is improved.
[0009]
Here, if the portion having the minimum cross-sectional area of the narrowed portion is formed in a straight shape extending straight over a predetermined length, the rectifying action in the narrowed portion is more effectively exhibited, which is advantageous.
[0010]
Further, in order to perform feedback control of the amount of fuel gas supplied to each combustor in accordance with the amount of combustion air supplied from each air supply passage, air flow amount detecting means may be arranged in each air supply passage. In this case, if the air flow rate detecting means is provided in each air supply passage at the downstream side of the throttle section, the air flow is rectified at the position where the detecting means is arranged, so that the detection variation is affected by the turbulence of the air flow. Can be prevented.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows a forced-supply type combined combustion device in which a first and a second pair of combustors 1 and 2 are arranged side by side. Here, one first combustor 1 is a hot water supply combustor, and the other second combustor 2 is a bath reheating combustor, which is operated independently of each other. Each of the combustors 1 and 2 is configured such that a lower burner 4 and an upper water heat exchanger 5 are housed in a combustion cylinder 3, respectively.
[0012]
The combustion cylinder 3 of the first combustor 1 is connected to a first air supply passage 6 extending downward, and the combustion cylinder 3 of the second combustor 2 also has a second air supply passage 7 extending downward. It is connected. The first and second air supply passages 6, 7 merge below each other, are connected to a single blower 9 via the merge portion 8, and are connected to the single air blower 9 via the air supply passages 6, 7. Thus, combustion air is supplied to both combustors 1 and 2.
[0013]
A pressure equalizing plate 10 having a large number of through holes is disposed on the combustion cylinder 3 of each of the combustors 1 and 2 below the burner 4. The air is guided from the lowermost distribution space 11 of the combustion cylinder 3 to the arrangement portion of the burner 4 via the equalizing plate 10.
[0014]
At the junction 8 of the two air supply passages 6, 7, a position for closing the entrance 6 a of the first air supply passage 6 facing the junction 8, and an entrance 7 a of the second air supply passage 7 facing the junction 8. A single damper member 12 is provided which is rotatable between a position at which the air is closed and a distribution ratio of the amount of air blown to both air supply passages 6 and 7 can be changed by the rotation of the damper member 12. I have to.
[0015]
Here, when the rotation rate of the damper member 12 is fixed to a certain angle and the rotation speed of the blower 9 is increased to increase the amount of air blown, the amount of air supplied to both air supply passages 6 and 7 is reduced. Is increased while maintaining a predetermined distribution ratio corresponding to the rotation angle of the second air supply passage, but the damper member 12 is rotated in a direction to narrow the opening degree of one inlet passage, for example, the inlet 7a of the second air supply passage 7. If the amount of air blown from the blower 9 is increased in this state, the distribution ratio on the side of the second air supply passage 7 is reduced. The amount of air supplied to the air passage 6 can be increased. Further, if the amount of air blown from the blower 9 is reduced while the damper member 12 is rotated in a direction to widen the opening of the inlet 7a of the second air supply passage 7, the distribution ratio on the second air supply passage 7 side is reduced. Is increased, the amount of air supplied to the first air supply passage 6 can be reduced without changing the amount of air supplied to the second air supply passage 7. Therefore, by controlling the rotation angle of the damper member 12 and the rotation speed of the blower 9 in combination, the amount of air supplied to each of the air supply passages 6, 7 can be adjusted in accordance with the amount of air required from each of the combustors 1, 2. Can be changed.
[0016]
When the damper member 12 is arranged as described above, the air flow is likely to be disturbed when passing through the arrangement portion of the damper member 12. Here, even if there is a turbulence in the air flow flowing from each air supply passage 6, 7 into the distribution space 11 of each of the combustors 1, 2, if the turbulence is to some extent, the pressure equalizing plate 10 acts to dispose the burners 4. The combustion air can be supplied to the section with a uniform flow velocity distribution. However, the degree of the turbulence of the air flow generated when passing through the arrangement portion of the damper member 12 changes depending on the rotation angle and the air volume of the damper member 12, and the air flow flowing into the distribution space 11 of each of the combustors 1 and 2. The degree of turbulence also changes, and it is difficult to make the flow velocity distribution uniform only with the pressure equalizing plate 10.
[0017]
Therefore, in the present embodiment, the air supply passages 6 and 7 are provided with the throttle portions 13 and 14 having a smaller sectional area than the inlet portions 6a and 7a. Portions 13a, 14a of the minimum cross-sectional areas of the throttle portions 13, 14 are formed in a straight shape extending straight over a predetermined length, and the air flows are efficiently rectified by the throttle portions 13, 14. Like that.
[0018]
Further, the inflow portion and the outflow portion of the throttle portions 13 and 14 are formed so that the cross-sectional area changes gradually, and therefore, a rectifying action is exhibited without generating a large pressure loss. It is desirable that the area ratio of the minimum cross-sectional area portions 13a and 14a to the cross-sectional area of the inlet portions 6a and 7a be 50 to 80%. However, the lower limit of the area ratio changes according to the required maximum air volume.
[0019]
According to the above configuration, even if turbulence occurs in the airflow when the airflow passes through the arrangement portion of the damper member 12, the airflow is rectified by the throttle portions 13 and 14, so that the distribution space 11 of each of the combustors 1 and 2 is equalized. The combustion air is supplied to the burner 4 via the pressure plate 10 with a uniform wind speed distribution over the entire area, and the combustion state of the burner 4 is improved.
[0020]
Incidentally, the actual supply air amount may slightly deviate from the required air amount of each of the combustors 1 and 2. Therefore, an air flow detecting means 15 including a pressure sensor or the like is arranged in each of the air supply passages 6 and 7, and the amount of gas supplied to the burner 4 is corrected in accordance with the deviation between the detected air flow and the required air flow, so that the actual air flow And the amount of gas supply. In this case, if the turbulence of the air flow reaches the location where the air volume detecting means 15 is disposed, the detected air volume varies. Therefore, in the present embodiment, the air volume detection unit 15 is disposed downstream of the throttle units 13 and 14. Since the air flow is rectified downstream of the throttle portions 13 and 14, the air flow can be detected without causing variation.
[0021]
As described above, the embodiment in which the present invention is applied to the combined combustion device including the pair of hot water supply and reburning combustors 1 and 2 has been described. However, another combined combustion including the pair of independently operated combustors. The present invention can be similarly applied to a vessel.
[Brief description of the drawings]
FIG. 1 is a sectional view of a combustion device according to an embodiment of the present invention.
[Explanation of symbols]
1, 2 ... Combustor 6, 7 ... Air supply passage 6a, 7a ... Inlet 8 ... Confluence 9 ... Blower 12 ... Damper member 13, 14 ... Restrictor 13a, 14a ... Minimum cross section 15 ... Airflow detecting means

Claims (3)

互いに独立して作動する一対の燃焼器を備え、両燃焼器にそれぞれ接続される一対の給気通路を合流させて単一の送風機に接続し、この送風機から両燃焼器に燃焼用空気を供給する強制給気式複合燃焼装置であって、
両給気通路の合流部に、合流部に臨む一方の給気通路の入口部を閉鎖する位置から他方の給気通路の入口部を閉鎖する位置に亘って回動して、両給気通路への送風量の分配比率を可変する単一のダンパ部材を設けるものにおいて、
各給気通路に、断面積を入口部よりも狭くした絞り部を介設することを特徴とする強制給気式複合燃焼装置。Equipped with a pair of combustors that operate independently of each other, a pair of air supply passages respectively connected to both combustors are joined and connected to a single blower, and combustion air is supplied from this blower to both combustors A forced-supply type combined combustion device,
At the junction of the two air supply passages, the air supply passage is rotated from a position where the entrance of one air supply passage facing the junction is closed to a position where the entrance of the other air supply passage is closed. In the case of providing a single damper member that varies the distribution ratio of the amount of air blown to,
A forced-air-supply type combined combustion device, characterized in that a throttle portion having a smaller cross-sectional area than an inlet portion is interposed in each air supply passage. 前記絞り部の最小断面積の部分を所定長さに亘って真直に延在するストレート形状に形成することを特徴とする請求項１に記載の強制給気式複合燃焼装置。2. The forced-supply type combined combustion device according to claim 1, wherein a portion having a minimum cross-sectional area of the throttle portion is formed in a straight shape extending straight over a predetermined length. 3. 前記各給気通路に、前記絞り部の下流側に位置させて、風量検出手段を設けることを特徴とする請求項１または２に記載の強制給気式複合燃焼装置。The forced air supply type combined combustion device according to claim 1, wherein an air volume detection unit is provided in each of the air supply passages at a position downstream of the throttle unit.
JP2003013022A 2003-01-22 2003-01-22 Forced charge combined combustion system Expired - Fee Related JP3999133B2 (en)

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KR10-2003-0096797A KR100521387B1 (en) 2003-01-22 2003-12-24 Compulsive air feeding type combustion apparatus

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010127540A (en) * 2008-11-27 2010-06-10 Noritz Corp Combustion apparatus
JP2012013319A (en) * 2010-06-30 2012-01-19 Noritz Corp Combustion device
JP2012013320A (en) * 2010-06-30 2012-01-19 Noritz Corp Combustion device
CN109737400A (en) * 2019-02-13 2019-05-10 珠海格力电器股份有限公司 Burner and gas heater

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010127540A (en) * 2008-11-27 2010-06-10 Noritz Corp Combustion apparatus
JP2012013319A (en) * 2010-06-30 2012-01-19 Noritz Corp Combustion device
JP2012013320A (en) * 2010-06-30 2012-01-19 Noritz Corp Combustion device
CN109737400A (en) * 2019-02-13 2019-05-10 珠海格力电器股份有限公司 Burner and gas heater

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