JPH03263501A - Low nitrogen oxide burner - Google Patents
Low nitrogen oxide burnerInfo
- Publication number
- JPH03263501A JPH03263501A JP2063563A JP6356390A JPH03263501A JP H03263501 A JPH03263501 A JP H03263501A JP 2063563 A JP2063563 A JP 2063563A JP 6356390 A JP6356390 A JP 6356390A JP H03263501 A JPH03263501 A JP H03263501A
- Authority
- JP
- Japan
- Prior art keywords
- flame
- gas
- combustion
- burner
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title claims description 16
- 239000007789 gas Substances 0.000 claims abstract description 65
- 239000000203 mixture Substances 0.000 claims abstract description 50
- 238000002485 combustion reaction Methods 0.000 claims abstract description 37
- 239000000446 fuel Substances 0.000 claims description 21
- -1 nitrogen oxide compound Chemical class 0.000 claims 1
- 239000002737 fuel gas Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000005516 engineering process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Spray-Type Burners (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、ガスおよび石油を気化させたガスを燃焼する
給湯器や暖房装置などの窒素酸化物の発生量の少ない低
ＮＯｘバーナに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a low NOx burner that generates a small amount of nitrogen oxides, such as a water heater or a heating device that burns gas obtained by vaporizing gas or oil.
１従来の技術、１
近年、環境汚染を防ぐべく、大型ボイラーなどの大型ガ
ス器具では、ＮＯｘの発生を抑える技術が用いられてい
る。この技術は、炎の温度の上昇を抑えることによって
、有害なＮＯｘが発生するのを抑えるものである。1. Prior Art, 1. In recent years, in order to prevent environmental pollution, technology for suppressing the generation of NOx has been used in large gas appliances such as large boilers. This technology suppresses the generation of harmful NOx by suppressing the rise in flame temperature.
具体的な技術としては、ガスを多段に燃焼させる多段燃
焼技術、排気ガスの一部を再び燃焼室へ戻す排気ガス再
循環技術、ニアリッチの混合気とガスリッチの混合気と
を燃焼させる濃淡燃焼技術、あるいは水蒸気を混合気に
混入させて燃焼する水蒸気混入技術などが知られている
。Specific technologies include multi-stage combustion technology that burns gas in multiple stages, exhaust gas recirculation technology that returns part of the exhaust gas to the combustion chamber, and concentrated combustion technology that burns a near-rich mixture and a gas-rich mixture. , or a steam mixing technique in which water vapor is mixed into a mixture and combusted is known.
［発明が解決しようとする課題］
しかるに、従来の技術は、構造が複雑かつ大型であった
。[Problems to be Solved by the Invention] However, the conventional technology has a complicated and large structure.
本発明の目的は、ＮＯｘの発生を抑えることのできる小
型の低窒素酸化物バーナの捉供にある。An object of the present invention is to provide a small-sized, low-nitrogen oxide trapping burner that can suppress the generation of NOx.
［課題を解決するための手段］
上記の目的を達成するために、本発明の低窒素酸化物バ
ーナは、次の技術的手段を採用する。[Means for Solving the Problems] In order to achieve the above object, the low nitrogen oxide burner of the present invention employs the following technical means.
ガスバーナは、燃料であるガスと燃焼用の１次空気との
混合比が空気過剰率１．３以上の混合気を吐出する主炎
口、および燃料であるガスと燃焼用の１次空気との混合
比が空気過剰率０．８〜１２の混合気を、前記主炎口の
隣部に吐出する保炎用炎口を備える。A gas burner has a main flame port that discharges a mixture with an excess air ratio of 1.3 or more between gas as a fuel and primary air for combustion, and A flame holding flame port is provided for discharging a mixture having an excess air ratio of 0.8 to 12 to a portion adjacent to the main flame port.
［作用コ
保炎用炎口の吐出する空気過剰率０．８〜１．２の混合
気は、空気の混入量が適切であるため、燃焼が確実に行
われる。つまり、保炎用炎口には、炎が確実に形成され
る。[Effect: The mixture with an excess air ratio of 0.8 to 1.2 discharged from the flame holding flame port has an appropriate amount of air mixed in, so that combustion is reliably performed. In other words, a flame is reliably formed at the flame holding flame port.
一方、主炎口より吐出する空気過剰率１．３以上の混合
気は、燃焼良好域が狭く、かつ炎がリフトするため燃焼
が不安定となり、炎が消えやすい。On the other hand, when the air-fuel mixture is discharged from the main flame port and has an excess air ratio of 1.3 or more, the good combustion range is narrow and the flame lifts, making the combustion unstable and the flame easily extinguished.
しかるに、主炎口の隣部の保炎用炎口に、炎が確実に形
成されるため、主炎口の炎が例え消えても、主炎口より
吐出される混合気は、保炎用炎口の炎によって再び着火
する。However, since a flame is reliably formed in the flame holding flame port next to the main flame hole, even if the flame in the main flame hole goes out, the mixture discharged from the main flame hole will remain in the flame holding flame hole. It will be ignited again by the flame from the flame.
［発明の効果］
ニアリッチの混合気による炎は、温度が低く低ＮＯｘで
あるが、保炎性能が悪かった。しかるに、保炎用炎口に
保炎を形成することにより、主炎口より吐出されるニア
リッチの混合気を安定して燃焼させることができる。こ
の結果、ＮＯｘの発生を抑えたガスバーナを提供するこ
とができる。[Effects of the Invention] Although the flame generated by the near-rich mixture had a low temperature and low NOx, the flame holding performance was poor. However, by forming flame stabilization at the flame stabilization port, the near-rich air-fuel mixture discharged from the main flame port can be stably combusted. As a result, it is possible to provide a gas burner that suppresses the generation of NOx.
また、ニアリッチの混合気を吐出する主炎口の隣部に保
炎を形成する簡単な構造であるため、低ＮＯｘのガスバ
ーナが大型化せず、かつ低ＮＯｘのガスバーナを安価に
提供できる。この結果、低ＮＯｘの燃焼器具を、コンパ
クトでかつ安価に提供できる。In addition, since the structure is simple in that flame holding is formed next to the main flame port that discharges a near-rich air-fuel mixture, the low NOx gas burner does not become large-sized, and the low NOx gas burner can be provided at a low cost. As a result, a combustion appliance with low NOx can be provided in a compact and inexpensive manner.
［実施例］
次に、本発明の低窒素酸化物バーナを、家庭用のガス給
湯器に適用した一実施例に基づき説明する。[Example] Next, a description will be given based on an example in which the low nitrogen oxide burner of the present invention is applied to a domestic gas water heater.
（実施例の構成）
第１図および第２図は第１実施例を示すもので、第１図
はガスバーナの断面図、第２図はガス給湯器の概略断面
図を示す。(Configuration of Embodiment) FIGS. 1 and 2 show a first embodiment, in which FIG. 1 is a sectional view of a gas burner, and FIG. 2 is a schematic sectional view of a gas water heater.
ガス給湯器１は、ガスバーナ２で形成された炎の熱によ
って、熱交換器３を流れる水を加熱するものである。本
実施例のガス給湯器１に用いられるガスバーナ２は、プ
レミックス式とブンゼン式とが燃焼量によって切り替え
られるもので、複数のバーナチューブ４の集合体５と、
セラミックス製のバーナプレート６とを備える。The gas water heater 1 heats water flowing through a heat exchanger 3 using the heat of a flame formed by a gas burner 2. The gas burner 2 used in the gas water heater 1 of this embodiment is a premix type and a Bunsen type that can be switched depending on the combustion amount, and includes an aggregate 5 of a plurality of burner tubes 4.
A burner plate 6 made of ceramics is provided.
バーナチューブ４は、ステンレス板を接合して形成した
偏平な通路で、下端に燃料であるガスと燃焼用の１次空
気とを流入する流入ロアを備える。The burner tube 4 is a flat passage formed by joining stainless steel plates, and has an inlet lower end at the lower end through which fuel gas and primary air for combustion flow.
また、バーナチューブ４は、上端に、通路内に供給され
たガスと１次空気との混合気を吐出する流出口８を備え
る。そして、複数のバーナチューブ４は、接合されて一
体化し、各バーナチューブ４の流出口８が連続して設け
られている。The burner tube 4 also includes an outlet 8 at its upper end that discharges a mixture of gas and primary air supplied into the passage. The plurality of burner tubes 4 are joined and integrated, and the outlet 8 of each burner tube 4 is provided continuously.
各バーナチューブ４に供給される混合気の混合比は、互
いに隣接するバーナチューブ４と混合比が異なるように
設けられている。具体的には、各バーナチューブ４の集
合体５の内、１つおきの第１バーナチユーブ９に空気過
剰率１．４〜１．５の混合気（以下、ニアリッチ混合気
〉を供給し、残りの第２バーナチユーブ１０に空気過剰
率１．０〜１２、の混合気（以下、適正混合気）を供給
するものである。The mixture ratio of the air-fuel mixture supplied to each burner tube 4 is set to be different from that of the burner tubes 4 adjacent to each other. Specifically, a mixture with an excess air ratio of 1.4 to 1.5 (hereinafter referred to as near-rich mixture) is supplied to every other first burner tube 9 in the assembly 5 of each burner tube 4, The remaining second burner tube 10 is supplied with a mixture having an excess air ratio of 1.0 to 12 (hereinafter referred to as a proper mixture).
バーナプレート６は、接合された各バーナチューブ４の
流出口８を覆うもので、各流出口８を通過した混合気を
通過させるための、細い通路が多数設けられている。The burner plate 6 covers the outlet ports 8 of each of the burner tubes 4 joined together, and is provided with a large number of narrow passages through which the air-fuel mixture that has passed through each outlet port 8 passes.
バーナチューブ４の集合体５は、各隣接する流出口８か
らニアリッヂ混合気および適正混合気を交互に吹き出す
。このため、バーナプレート６は、多数の細い通路が、
ニアリッチ混合気を吹き出す部分と、適正混合気を吹き
出す部分とに分がれる。The assembly 5 of burner tubes 4 blows out a near-ridge mixture and a proper mixture alternately from each adjacent outlet 8. For this reason, the burner plate 6 has many narrow passages.
It is divided into a part that blows out a near-rich mixture and a part that blows out a proper mixture.
なお、ニアリッヂ混合気を吹き出す部分によって、本発
明の主炎口１１が構成され、適正混合気を吹き出す部分
によって、保炎用炎口１２が構成されガス給湯器１は、
第１バーナチユーブ９および第２バーナチユーブ１０内
へ、ガスを供給するガス供給通路１３を備える。このガ
ス供給通路１３は、上流側に２つの電磁開閉弁１４．１
５、ガバナ弁１６、電磁比例弁１７等が設けられている
。The part that blows out the near-ridge mixture constitutes the main flame port 11 of the present invention, and the part that blows out the proper mixture constitutes the flame holding flame port 12.
A gas supply passage 13 for supplying gas into the first burner tube 9 and the second burner tube 10 is provided. This gas supply passage 13 has two electromagnetic on-off valves 14.1 on the upstream side.
5, a governor valve 16, an electromagnetic proportional valve 17, etc. are provided.
また、ガス供給通路の下流側には、第１バーナチユーブ
９へのガスの供給および遮断を行う燃焼量切替用の電磁
開閉弁１８が設けられている。Further, on the downstream side of the gas supply passage, there is provided an electromagnetic on-off valve 18 for switching the amount of combustion that supplies and cuts off gas to the first burner tube 9 .
また、ガス給湯器１−は、各バーナチューブ４内へ燃焼
用の空気を供給する送風１１１９を備える。The gas water heater 1 - also includes a blower 1119 that supplies combustion air into each burner tube 4 .
上記３つの電磁開閉弁１４．１５．１８、電磁比例弁１
７、送風機】９、スパーカ２０等の電気機器は、図示し
７ない制御装置によって制御される。The above three electromagnetic on-off valves 14, 15, 18, electromagnetic proportional valve 1
7. Air blower] 9. Electrical equipment such as the sparker 20 is controlled by a control device 7 not shown.
制御装置は、周知のもので、図示しない操作スイッチ（
運転スイッチや、湯温設定スイッチなど）や、複数のセ
ンサ（水流センサや、湯温センサなど）を備えてガス給
湯器１の使用状態を検出し、その使用状態によって、電
磁開閉弁１４．１５．１８、電磁比例弁１７、送風機１
９．スパーカ２０等を制御するものである。なお、電磁
開閉弁１８は、所定燃焼量より大きな燃焼量が要求され
た際に開かれ、逆に所定燃焼量より小さな燃焼量が要求
された際に閉じるように制御される。The control device is well-known and includes an operation switch (not shown).
The gas water heater 1 is equipped with an operating switch, a hot water temperature setting switch, etc.) and multiple sensors (water flow sensor, hot water temperature sensor, etc.) to detect the usage status of the gas water heater 1, and depending on the usage status, the electromagnetic on-off valve 14. .18, solenoid proportional valve 17, blower 1
9. It controls the sparker 20 and the like. The electromagnetic on-off valve 18 is controlled to be opened when a combustion amount larger than a predetermined combustion amount is requested, and closed when a combustion amount smaller than the predetermined combustion amount is requested.
（実施例の作動および効果） 次に、ガスバーナ２に形成される炎について説明する。(Operation and effects of the embodiment) Next, the flame formed in the gas burner 2 will be explained.
イ）プレミックス燃焼時
ガスバーナ２に大きな燃焼量が要求されると、電磁開閉
弁１８が開かれて、第１バーナチスーブ９内にニアリッ
チ混合気が供給されるとともに、第２バーナチユーブ１
０内に適正混合気が供給される。すると、主炎口１］お
よび保炎用炎口１２からそれぞれニアリッチ混合気およ
び適正混合気が吐出される。b) When a large combustion amount is required from the gas burner 2 during premix combustion, the electromagnetic on-off valve 18 is opened and a near-rich mixture is supplied into the first burner tube 9, and the second burner tube 1 is supplied with a near-rich mixture.
Proper mixture is supplied within 0. Then, a near rich mixture and a proper mixture are discharged from the main flame port 1 and the flame holding flame port 12, respectively.
保炎用炎ｌ］１２より吐出された適正混合気は、空気過
剰率１０へ−１２であるため、確実に燃焼し、保炎２１
を形成する。The proper air-fuel mixture discharged from the flame holding flame 12 has an excess air ratio of 10 to -12, so it burns reliably and maintains the flame holding flame 21.
form.
一方、１炎口１１より吐出されたニアリッヂ混合気も燃
焼し、主炎口１１に主炎２２を形成する。On the other hand, the near-ridge mixture discharged from the first flame port 11 also burns, forming a main flame 22 at the main flame port 11.
Ｊ炎口１１より吐出されたニアリッチ混合気は、空気過
剰率１４〜１５の空燃比のため、燃焼温准を低く抑える
ことができるが、リフＩ−量が大きく燃焼良好域が狭い
。この狭い燃焼良好域に空燃比を保つのは困雛で、外乱
等によって空気過剰率が変化する場合が考えられる。そ
して、外乱等によって空気過剰率がニアリッチ側へ変化
すると、主炎２２のリフトが増して、主炎２２が消える
可能性がある。The near-rich mixture discharged from the J flame port 11 has an air-fuel ratio of 14 to 15 excess air, so the combustion temperature can be kept low, but the riff I amount is large and the good combustion range is narrow. It is difficult to maintain the air-fuel ratio within this narrow good combustion range, and the excess air ratio may change due to disturbances or the like. If the excess air ratio changes to the near rich side due to disturbance or the like, the lift of the main flame 22 may increase and the main flame 22 may disappear.
しかるに、主炎口１１の隅部の保炎用炎Ｄ １２に、保
炎２１が形成されているため、１炎２２が例え消えても
、主炎口１］より吐出される混合気は、適正良好域に戻
った際、保炎用炎口１２の炎によって再び着火し、主炎
２２を保つことができる、
口）ブンゼン燃焼時
ガスバーナ２に小さな燃焼量が要求されるど、電磁開閉
弁１８が閉じられて、第２バーナチユーブ１０内にガス
が供給されて第１バーナチフー−ブ９内へのガスの供給
が停止される。この結果、第２バーナデユープ１０には
、適正混合気が供給され、第１バーナチユーブ９内には
、送風Ｉ！１９の圧送した空気のみが供給される。However, since the flame holding flame 21 is formed in the flame holding flame D 12 at the corner of the main flame opening 11, even if one flame 22 disappears, the air-fuel mixture discharged from the main flame opening 1] is When it returns to the proper range, it can be ignited again by the flame in the flame holding flame port 12, and the main flame 22 can be maintained. 18 is closed, gas is supplied into the second burner tube 10, and the supply of gas into the first burner tube 9 is stopped. As a result, the proper air-fuel mixture is supplied to the second burner tube 10, and the air blower I! is supplied to the first burner tube 9. Only 19 pumped air is supplied.
そし７て、保炎用炎口１２より吐出された適正混合気は
燃焼し、保炎２１を形成する。Then, the proper air-fuel mixture discharged from the flame stabilizing flame port 12 is combusted to form a flame stabilizing flame 21.
一方、主炎［］１］より吐出された空気は保炎用炎Ｄ
］、 ２で燃焼中の未燃焼ガスの一部と混合する。On the other hand, the air discharged from the main flame []1] is the flame holding flame D
], 2 is mixed with a part of the unburned gas during combustion.
すると、保炎用炎口１２より吐出される混合気の空燃比
が、ニアリッチ側へ移行し、混合気が実質的に空気過剰
率２０以７Ｆになる。Then, the air-fuel ratio of the air-fuel mixture discharged from the flame stabilizing flame port 12 shifts to the near-rich side, and the air-fuel mixture substantially has an excess air ratio of 20 to 7F.
この保炎２１は、空気過剰率が非常に高いが、保炎２１
の基部における空気過剰率が適正混合気とされるため、
炎がリフトしても消えることがない。また、保炎２１の
先側は、空気過剰率が非常に高く、炎の温度を低く抑え
ることができる。This flame holding 21 has a very high excess air ratio, but the flame holding 21
Since the excess air ratio at the base of is considered to be the appropriate mixture,
Even if the flame lifts, it will not go out. Moreover, the excess air ratio on the front side of the flame holding 21 is very high, and the temperature of the flame can be kept low.
（実施例の効果）
プレミックス燃焼時く本発明にかかる燃焼状態）は、ニ
アリッヂ混合気を安定して燃焼し、温度の低い炎を安定
して形成することができる。この結果、ガスバーナ２の
発生するＮ Ｏｘの１を抑えることができる。(Effects of Examples) In the combustion state according to the present invention during premix combustion, a near-ridge mixture can be stably combusted, and a low-temperature flame can be stably formed. As a result, the amount of NOx generated by the gas burner 2 can be suppressed.
一方、ブンゼン燃焼時は、第１バーナチユーブ９へのガ
スの供給を停止して燃焼量を大幅に抑えることができる
。そして、第１バーナチユーブ９へ２次空気を供給して
ガスバーナ２をブンゼン式として構成し、空気過剰率２
．０以上のＴＤＲバーナとした。この結果、炎の温度が
抑えられ、小燃焼時においても、ガスバーナ２の発生す
るＮＯｘの量を抑えることができる。On the other hand, during Bunsen combustion, the gas supply to the first burner tube 9 can be stopped to significantly suppress the amount of combustion. Then, the gas burner 2 is configured as a Bunsen type by supplying secondary air to the first burner tube 9, and the excess air ratio is 2.
．． It was set as a TDR burner of 0 or more. As a result, the temperature of the flame is suppressed, and the amount of NOx generated by the gas burner 2 can be suppressed even during small combustion.
また、電磁開閉弁１８の切り替えによって、燃料量を大
きく変化させることができる。つまり、本実施例のガス
給湯器１は、プレミックス式のガスバーナ２では困難で
あった燃焼量の変化比を大きく取ることができる。Further, by switching the electromagnetic on-off valve 18, the amount of fuel can be changed significantly. In other words, the gas water heater 1 of this embodiment can achieve a large change ratio in the amount of combustion, which is difficult to achieve with the premix type gas burner 2.
さらに、空燃比の異なった混合気を吐出するバーナチュ
ーブ４を集合させて、ニアリッチの混合気を吐出する主
炎口１１の隣部に保炎シ１を形成する簡単な構造である
ため、低ＮＯｘのガスバーナが大型化せず、かつ低ＮＯ
ｘのガスバーナ２を安価に提供できる。この結果、低Ｎ
Ｏｘのガス給湯器１を、コンパクトでかつ安価に提供で
きる。Furthermore, it has a simple structure in which the burner tubes 4 that discharge air-fuel mixtures with different air-fuel ratios are assembled to form a flame holding chamber 1 next to the main flame port 11 that discharges a near-rich air-fuel mixture. NOx gas burner does not become large and has low NOx
x gas burner 2 can be provided at low cost. As a result, low N
An Ox gas water heater 1 can be provided compactly and at low cost.
（第２実施例）
第３図は第２実施例を示すガスバーナ２の斜視図である
。(Second Embodiment) FIG. 3 is a perspective view of a gas burner 2 showing a second embodiment.
本実施例は、各バーナチューブ４を略し字に設け、空気
とガスとの撹拌性を向上させたもので、下側の横端に、
流入ロアを備える。In this embodiment, each burner tube 4 is provided in an abbreviated shape to improve the agitation performance of air and gas.
Equipped with an inflow lower.
（第３実施例）
第４図は第３実施例を示すガスバーナ２の斜視図である
。(Third Embodiment) FIG. 4 is a perspective view of a gas burner 2 showing a third embodiment.
本実施例は、第１、第２実施例に用いたバーナプレート
（第１実施例参照）を廃止し、各第１バーナチユーブ９
および各第２バーナチユーブ１０の各流出口８を多数の
スリット状に設け、各流出口８を主炎口１１および保炎
用炎口１２としたものである。In this embodiment, the burner plate used in the first and second embodiments (see the first embodiment) is abolished, and each first burner tube 9
Each outlet 8 of each second burner tube 10 is provided in the form of a large number of slits, and each outlet 8 is used as a main flame port 11 and a flame holding flame port 12.
（変形例）
本発明をガス給湯器に適用した例を示したが、ガス暖房
装置や、調理機器など他のガス燃焼装置のガスバーナに
適用しても良い。(Modification) Although an example in which the present invention is applied to a gas water heater has been shown, the present invention may also be applied to a gas burner of other gas combustion devices such as a gas heating device or a cooking appliance.
また、燃料を石油とし、石油を気化させたガスを燃焼す
るバーナに適用しても良い。Further, the present invention may be applied to a burner that uses petroleum as fuel and burns gas obtained by vaporizing petroleum.
第１図Figure 1
第１図および第２図は第１実施例を示すもので、第１図
はガスバーナの断面図、第２図はガス給湯器の概略断面
図である。
第３図は第２実施例を示すガスバーナの斜視図である。
第４図は第３実施例を示すガスバーナの斜視図である。
図中 １・・・ガス給湯器 ２・・・ガスバーナ９・
・・第１バーナチユーブ
１０・・・第２バーナチユーブ1 and 2 show a first embodiment, in which FIG. 1 is a sectional view of a gas burner, and FIG. 2 is a schematic sectional view of a gas water heater. FIG. 3 is a perspective view of a gas burner showing a second embodiment. FIG. 4 is a perspective view of a gas burner showing a third embodiment. In the diagram 1... Gas water heater 2... Gas burner 9.
... 1st Burna Tube 10... 2nd Burna Tube
Claims (1)
比が空気過剰率１．３以上の混合気を吐出する主炎口、 （ｂ）および燃料であるガスと燃焼用の１次空気との混
合比が空気過剰率０．８〜１．２の混合気を、前記主炎
口の隣部に吐出する保炎用炎口 を備える低窒素酸化物バーナ。[Scope of Claims] 1) (a) A main flame port that discharges a mixture having an excess air ratio of 1.3 or more between gas as fuel and primary air for combustion; (b) and A low nitrogen oxide compound that includes a flame holding flame port that discharges a mixture of a certain gas and primary air for combustion with an excess air ratio of 0.8 to 1.2 to a portion adjacent to the main flame hole. Burna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2063563A JPH03263501A (en) | 1990-03-13 | 1990-03-13 | Low nitrogen oxide burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2063563A JPH03263501A (en) | 1990-03-13 | 1990-03-13 | Low nitrogen oxide burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03263501A true JPH03263501A (en) | 1991-11-25 |
Family
ID=13232827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2063563A Pending JPH03263501A (en) | 1990-03-13 | 1990-03-13 | Low nitrogen oxide burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03263501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06159628A (en) * | 1992-11-24 | 1994-06-07 | Rinnai Corp | Combustion device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01219406A (en) * | 1988-02-27 | 1989-09-01 | Osaka Gas Co Ltd | Gas burner |
| JPH0236716B2 (en) * | 1983-02-15 | 1990-08-20 | Sanyo Chemical Ind Ltd |
-
1990
- 1990-03-13 JP JP2063563A patent/JPH03263501A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0236716B2 (en) * | 1983-02-15 | 1990-08-20 | Sanyo Chemical Ind Ltd | |
| JPH01219406A (en) * | 1988-02-27 | 1989-09-01 | Osaka Gas Co Ltd | Gas burner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06159628A (en) * | 1992-11-24 | 1994-06-07 | Rinnai Corp | Combustion device |
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