JP2715463B2 - Burner - Google Patents
BurnerInfo
- Publication number
- JP2715463B2 JP2715463B2 JP63214035A JP21403588A JP2715463B2 JP 2715463 B2 JP2715463 B2 JP 2715463B2 JP 63214035 A JP63214035 A JP 63214035A JP 21403588 A JP21403588 A JP 21403588A JP 2715463 B2 JP2715463 B2 JP 2715463B2
- Authority
- JP
- Japan
- Prior art keywords
- flame
- combustion
- combustion chamber
- holes
- burner
- 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.)
- Expired - Fee Related
Links
Landscapes
- Evaporation-Type Combustion Burners (AREA)
- Spray-Type Burners (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は暖房用、或は給湯用のバーナに関するもので
ある。Description: TECHNICAL FIELD The present invention relates to a burner for heating or hot water supply.
従来の技術 従来、このようなバーナとしては例えば第３図に示す
ように、ヒータ１を内蔵した気化筒２から構成される気
化室３と、気化室３と連接した円筒状の炎孔板４に設け
られた複数個の炎孔５と、炎孔板４の外側下部に二次空
気孔６を有する保炎板７が気化筒２に設置されている構
成となっていた。2. Description of the Related Art Conventionally, as such a burner, for example, as shown in FIG. 3, a vaporizing chamber 3 composed of a vaporizing cylinder 2 having a built-in heater 1 and a cylindrical flame hole plate 4 connected to the vaporizing chamber 3. And a flame holding plate 7 having a secondary air hole 6 at a lower portion of the outer side of the flame hole plate 4.
このバーナにおいては、炎孔板４上の火炎を複数個に
分散して定常燃焼時の火炎温度を上昇させないように構
成しており、その結果燃焼排ガス中に含まれるNOXの低
減を図っている。また、T.D.R.（Turn−Down−Ratio;燃
焼量可変幅）を大きくとるために燃焼量をかなり低下さ
せる場合、或は燃料供給系の変動により燃焼量が低下す
る場合とか、また酸素過多や燃料不足等により予混合気
の空気比が設定値から大幅にはずれたような異常燃焼時
には、一般には炎孔板４の下方の火炎から順に温度が低
下していき、やがてリフティングする。ところが、炎孔
板４の外側下方に設けられている保炎板７により、火炎
の熱損失を防止し、リフティングによる一酸化炭素等の
不完全燃焼ガスの排出を抑制している。In this burner, to distribute the flame on the burner port plate 4 into a plurality are configured so as not to raise the flame temperature in the steady state combustion, thereby reducing the NO X contained in the result flue gas I have. In addition, when the combustion amount is considerably reduced to obtain a large TDR (Turn-Down-Ratio; combustion amount variable width), or when the combustion amount is reduced due to fluctuations in the fuel supply system, or when the amount of oxygen or fuel is insufficient. At the time of abnormal combustion in which the air ratio of the premixed air greatly deviates from the set value due to, for example, the temperature generally decreases in order from the flame below the flame hole plate 4, and eventually lifts. However, the flame holding plate 7 provided below the flame hole plate 4 prevents the heat loss of the flame and suppresses the discharge of incomplete combustion gas such as carbon monoxide due to the lifting.
一般的に、T.D.R.拡大、或は異常燃焼時の燃焼安定確
保には、燃焼限界における火炎の安定化、火炎後流
での不完全燃焼ガスの反応促進・維持、が必須条件であ
る。従来例においては、炎孔板４下方の火炎について上
記のみ対策しており、高T.D.R.化は充分ではなかっ
た。In general, in order to increase TDR or secure combustion stability during abnormal combustion, it is essential to stabilize the flame at the combustion limit and to promote and maintain the reaction of incomplete combustion gas in the wake of the flame. In the conventional example, only the above-mentioned countermeasures are taken for the flame below the flame hole plate 4, and the high TDR is not sufficient.
発明が解決しようとする課題 つまり、このようなバーナにおいは、高T.D.R.化のた
めに、燃焼量を小さくしたい場合、或は極端な酸素過多
や燃料不足等による混合気の空気比が増加した場合な
ど、火炎温度の急激な低下が生じ、リフティングによる
一酸化炭素等の不完全燃焼ガスを排出してしまうのであ
る。Problems to be Solved by the Invention In other words, in such a burner, when it is desired to reduce the amount of combustion in order to increase the TDR, or when the air ratio of the air-fuel mixture increases due to extreme oxygen excess or insufficient fuel, etc. For example, a rapid decrease in the flame temperature occurs, and incomplete combustion gas such as carbon monoxide due to lifting is discharged.
本発明は簡単な構成で空気比・燃焼量のより広い範囲
において良好な性能を十分に維持できるバーナを提供す
るものである。An object of the present invention is to provide a burner capable of sufficiently maintaining good performance in a wider range of air ratio and combustion amount with a simple configuration.
課題を解決するための手段 本発明は複数の炎孔を有する少なくとも１対の炎孔板
を前記炎孔が一対一に相対向するように対面させて配設
し、前記１対の炎孔板と側壁と燃焼室出口とから燃焼室
を形成し、前記炎孔が前記燃焼室出口方向に複数個並ん
でおり、かつ前記炎孔が前記炎孔板の前記燃焼室外側に
設けた予混合気供給管に各々通じており、かつ前記炎孔
が前記燃焼室出口方向に千鳥配列されていることを特徴
とする。Means for Solving the Problems According to the present invention, at least one pair of burner plates having a plurality of burner holes are arranged so as to face each other so that the burner holes face each other one by one, and the pair of burner holes plates is provided. A combustion chamber is formed from the combustion chamber, the combustion chamber includes a plurality of the flame holes arranged in the combustion chamber exit direction, and the flame holes are provided outside the combustion chamber of the flame hole plate. Each of the flame holes is connected to a supply pipe, and the flame holes are arranged in a staggered manner in a direction toward the outlet of the combustion chamber.
又本発明は複数の炎孔を有する少なくとも１対の炎孔
板を、一定距離離れた状態で対向させて配設し、前記１
対の炎孔板と燃焼室出口とから燃焼室を形成し、前記対
向する炎孔板相互間において前記炎孔は各々同軸上で対
向するよう構成し、前記炎孔板と外壁の間に予混合気供
給路を設けており、かつ前記炎孔が前記燃焼室出口方向
に複数個並んでおり、前記炎孔が前記燃焼室出口方向に
千鳥配列さていることを特徴とする。Further, the present invention provides at least one pair of flame holes plates having a plurality of flame holes so as to face each other at a predetermined distance from each other.
A combustion chamber is formed from a pair of the perforated plates and the outlet of the combustion chamber. The flame holes are coaxially opposed to each other between the opposed perforated plates. A mixture supply passage is provided, and a plurality of the flame holes are arranged in the combustion chamber outlet direction, and the flame holes are staggered in the combustion chamber outlet direction.
作用 この技術的手段による作用は次のようになる。Operation The operation of this technical means is as follows.
炎孔が炎孔板上において複数個に分割されており、定
常燃焼時の火炎温度は比較的低くすることが可能で、排
ガス中のNOX量を少なく維持できる。Burner ports are divided into a plurality on the flame holes plate, the flame temperature during steady combustion can be relatively low, can be maintained less the amount of NO X in the exhaust gas.
また炎孔が一対一に相対向するように構成されている
ので、燃焼室内においていわゆる対向流火炎が形成され
る。よって、燃焼量が小さくなった場合、或は極端な酸
素過多や燃料不足等による混合気の空気比が増加した場
合などに、火炎温度の急激な低下が生じるが、従来なら
ば火炎のリフティングが開始するそのような状態におい
ても、リフティングは充分に抑制される。さらに燃焼室
出口方向に炎孔が複数個並んでおり、低温の火炎の後流
における熱損失を抑えて温度低下を防止し、不完全燃焼
ガスの反応を充分に完結させることができる。Further, since the flame holes are configured to face each other one by one, a so-called counterflow flame is formed in the combustion chamber. Therefore, when the combustion amount decreases, or when the air ratio of the air-fuel mixture increases due to excessive oxygen excess or insufficient fuel, the flame temperature sharply decreases. Even in such a starting state, the lifting is sufficiently suppressed. Furthermore, a plurality of flame holes are arranged in the combustion chamber outlet direction, so that heat loss in the downstream of the low-temperature flame can be suppressed to prevent a temperature drop, and the reaction of incomplete combustion gas can be sufficiently completed.
しかも炎孔を燃焼室出口方向に千鳥配列してあり、定
常燃焼時の火炎温度を同一炎孔板面積に対して効率良く
低減させることが可能で、排ガス中のNOX量は火炎安定
性の増加にもかかわらずかなり低く抑えられる。一方、
異常燃焼時、或は燃焼量が極めて小さい場合に火炎基部
から燃焼室内に漏出する不完全燃焼ガスが燃焼室出口方
向に単純に流出されることを千鳥配列された下流の対の
火炎により反応促進させて防いでおり、バーナとしての
良好な排ガス特性を維持している。Moreover Yes and staggered the burner ports to the combustion chamber outlet direction, in a steady state combustion flame temperature can be efficiently reduced to the same burner ports plate area, NO X amount in the exhaust gas of the flame stability Despite the increase, it can be kept fairly low. on the other hand,
In case of abnormal combustion or when the amount of combustion is extremely small, the incomplete combustion gas leaking from the flame base into the combustion chamber is simply discharged in the direction of the exit of the combustion chamber, and the reaction is promoted by a pair of downstream flames arranged in a staggered arrangement. And maintain good exhaust gas characteristics as a burner.
以上のように簡単な構成によって、NOX排出量を低く
抑えたままで、空気比・燃焼量の広い範囲において高い
火炎安定性と良好な燃焼特性を十分に維持できるような
バーナが得られる。With a simple configuration as described above, while suppressing the NO X emissions, the burner as a high flame stability and good combustion characteristics in a wide range of air ratio-combustion amount can be maintained sufficiently obtained.
実 施 例 第１図、第２図は各々請求項１及び請求項４に対する
実施例１及び実施例２のバーナの斜視図であり、一部断
面により内部構成を示している。FIG. 1 is a perspective view of a burner according to the first and second embodiments of the present invention, and FIG. 2 is a perspective view of the burner.
まず実施例１について説明する。第１図において、ヒ
ータ部11を囲んだ気化部12において燃焼である灯油を気
化、空気と混合してつくられる予混合気は、予混合気分
岐部13を経て、予混合気通路14を通って予混合気供給管
15から、相対向して燃焼室16を形成する１対の炎孔板17
に設けられた複数個の炎孔18から噴出する。ここで１対
の炎孔板17は側壁17′により一定距離に維持、対向して
おり、また炎孔18は相対面する炎孔板17上の炎孔18と各
々一対一に対向させてある。そして燃焼室16の一端は開
放されており、燃焼室出口19を形成しているが、炎孔18
は燃焼室出口19方向に千鳥配列されている。予混合気供
給管15内において発達した流速分布を持つ予混合気は炎
孔18から燃焼室16内に向けて、安定性の高い火炎を形成
する近ポアゾイユ流れで噴出するようになっている。ま
た予混合気供給管15の周囲には二次空気が流れており、
適切に予混合気供給管15冷却し、火炎の逆火を防止して
いる。また燃焼室16の上端には二次空気スリット20、お
よび二次空気孔21を有しており、予混合気の空気比が１
以下の際の二次炎22を形成し完全燃焼を行っている。First, a first embodiment will be described. In FIG. 1, a premixed gas produced by evaporating kerosene, which is combustion, and mixing with air in a vaporizing section 12 surrounding a heater section 11 passes through a premixed gas branch section 13 and passes through a premixed gas passage 14. Premixed gas supply pipe
From 15, a pair of burner plates 17 opposing each other to form a combustion chamber 16.
Are ejected from a plurality of flame holes 18 provided in the nozzle. Here, the pair of flame holes 17 are maintained and opposed at a fixed distance by the side wall 17 ', and the holes 18 are respectively opposed to the flame holes 18 on the facing flame hole plate 17 one by one. . One end of the combustion chamber 16 is open and forms a combustion chamber outlet 19, but the flame hole 18
Are staggered in the direction of the combustion chamber outlet 19. The premixed gas having the flow velocity distribution developed in the premixed gas supply pipe 15 is ejected from the flame hole 18 into the combustion chamber 16 by a near Poiseuille flow that forms a highly stable flame. Secondary air is flowing around the premixed gas supply pipe 15,
The premixed gas supply pipe 15 is appropriately cooled to prevent flashback of the flame. The upper end of the combustion chamber 16 has a secondary air slit 20 and a secondary air hole 21 so that the air ratio of the premixed gas is 1
The secondary flame 22 in the following cases is formed and complete combustion is performed.
なお、実施例２においては、上記実施例１の予混合気
供給管15がなく、炎孔板17の燃焼室16外側には外壁23が
設けられて、炎孔板17と外壁23の間に予混合気通路14構
成されている点が異なる。また、本実施例２のバーナは
完全一次燃焼用としているため、燃焼室16の上端の二次
空気供給スリット20、及び二次空気孔21は設けておら
ず、定常燃焼時には二次炎22は形成されない。In the second embodiment, the premixed gas supply pipe 15 of the first embodiment is not provided, and an outer wall 23 is provided outside the combustion chamber 16 of the perforated plate 17. The difference is that a premixed gas passage 14 is provided. In addition, since the burner according to the second embodiment is used for complete primary combustion, the secondary air supply slit 20 at the upper end of the combustion chamber 16 and the secondary air hole 21 are not provided, and the secondary flame 22 is not provided during steady combustion. Not formed.
このような構成の実施例１、２について、空気比変
動、燃焼量変化に対する特性を説明する。With respect to Embodiments 1 and 2 having such a configuration, characteristics with respect to a change in air ratio and a change in combustion amount will be described.
本実施例1,2において、炎孔18は一対一に相対向して
おり、燃焼室16内においていわゆる対向流火炎を形成す
る。対向流火炎は、対向する火炎の流体力学的、或は熱
的相互作用により高T.D.R.化、或は空気比変動に対し
て、火炎安定性の高い燃焼形態を実現する。つまり、燃
焼量を小さくした際に放熱割合が増え燃焼速度が低下し
たり、或は空気比が最も燃焼速成の早い値（通常0.9〜
1.0）から何らかの変動要因により外れた場合、特に空
気過剰による空気比の増加時には、対向流火炎は効果を
発揮する。通常の火炎においては、例えば空気比では高
々1.1〜1.2程度で燃焼速度が急激に低下し、リフティン
グが加速されて不完全燃焼ガスが大量に生じ、やがて吹
き飛びに到る。しかし対向流火炎においては、より燃焼
量が小さい状態、或は空気比1.7〜2.0程度の条件下まで
火炎が安定に存在する。しかも複数個に分割された火炎
（マトリクス対向流火炎）構成により、一対の対向流火
炎基部からは発生し易かった不完全燃焼成分をかなり処
理できるようになっている。つまり高T.D.R.化、或は異
常燃焼時の燃焼安定性確保のための前述の条件、が
満足されたバーナを構成していることになる。In the first and second embodiments, the flame holes 18 face each other one by one, and form a so-called counterflow flame in the combustion chamber 16. The counterflow flame achieves a high TDR by hydrodynamic or thermal interaction of the opposing flames, or realizes a combustion form with high flame stability against air ratio fluctuation. In other words, when the combustion amount is reduced, the heat release ratio increases and the combustion speed decreases, or the air ratio is the value with the fastest combustion speed (normally 0.9 to 0.9).
If the airflow ratio deviates from 1.0) due to some fluctuation factors, especially when the air ratio is increased due to excess air, the counterflow flame is effective. In a normal flame, for example, at an air ratio of about 1.1 to 1.2 at the most, the combustion speed sharply decreases, lifting is accelerated, a large amount of incomplete combustion gas is generated, and eventually blow-off occurs. However, in the counterflow flame, the flame exists stably until the combustion amount is smaller or the air ratio is about 1.7 to 2.0. In addition, due to the configuration of the flame divided into a plurality of flames (matrix opposed flow flame), incomplete combustion components that are easily generated from the pair of opposed flow flame bases can be considerably treated. That is, the burner satisfies the above-described conditions for increasing the TDR or ensuring the combustion stability during abnormal combustion.
さらに、複数個に分割した炎孔18は燃焼室出口19方向
に千鳥配列されている。つまり定常燃焼時の火炎の温度
を効率良く低減させるために、炎孔板17の表面積を最も
有効に利用し、排ガス中のNOXを充分に低く維持できて
いる。一方、異常燃焼時、或は燃焼量が非常に小さい場
合に、火炎基部から発生する不完全燃焼ガスが燃焼室出
口19方向に単純に流出されることを千鳥配列された下流
の対の火炎により反応促進させて防ぎ、バーナとしての
安定燃焼範囲を拡大している。Further, the plurality of divided flame holes 18 are arranged in a staggered manner in the direction of the combustion chamber outlet 19. That is, in order to efficiently reduce the temperature of the flame at the time of steady combustion, the surface area of the flame hole plate 17 is used most effectively, and NO X in the exhaust gas can be kept sufficiently low. On the other hand, at the time of abnormal combustion or when the amount of combustion is very small, the incomplete combustion gas generated from the flame base is simply discharged to the combustion chamber outlet 19 by the pair of downstream flames arranged in a staggered arrangement. The reaction is promoted and prevented, and the stable combustion range as a burner is expanded.
ここで千鳥配列の効果として上記のもの以外に、炎孔
板17の温度分布が均一になり耐久性が向上したり、さら
には燃焼室16内のガス温度分布、流れをも均一になり燃
焼室出口19の二次炎形成も均質化し、排ガス特性も向上
することもあげられる。Here, in addition to the above-described effects of the staggered arrangement, the temperature distribution of the flame hole plate 17 becomes uniform and the durability improves, and furthermore, the gas temperature distribution and flow in the combustion chamber 16 become uniform, and the combustion chamber becomes uniform. The secondary flame formation at the outlet 19 is also homogenized, and the exhaust gas characteristics are also improved.
なお、本実施例２においては、上記実施例１と比較し
て予混合気供給管15の二次空気による冷却はなく、さら
に外壁23があるために燃焼室16の温度は高くなる。しか
し逆に、予混合気供給管15がないために、炎孔18におい
て流速分布は平坦であり、火炎は炎孔板17に近接、放熱
する。つまり、実施例２においても火炎温度は充分に低
下できている。また、本実施例２において、（火炎18の
総面積）／（炎孔板17の総面積）≦0.3の条件では、炎
孔負荷は高くなり、燃焼量が極端に小さくなった場合の
逆火防止に効果がある。In the second embodiment, the premixed gas supply pipe 15 is not cooled by the secondary air as compared with the first embodiment, and the temperature of the combustion chamber 16 becomes higher because of the outer wall 23. However, conversely, since there is no premixed gas supply pipe 15, the flow velocity distribution is flat in the flame holes 18, and the flame radiates near the flame hole plate 17 and radiates heat. That is, also in the second embodiment, the flame temperature can be sufficiently reduced. In the second embodiment, under the condition of (total area of the flame 18) / (total area of the flame hole plate 17) ≦ 0.3, the flame hole load becomes high and the flashback occurs when the combustion amount becomes extremely small. Effective for prevention.
さらに、本実施例1,2では、炎孔板17をセラミック等
の耐熱材料で形成すれば、火炎温度は若干増加傾向にあ
るものの、高負荷状態においても長寿命化が可能とな
る。また、燃料に灯油を用いたが、他の液体燃料、さら
に気体燃料においても同様の効果が得られる。Furthermore, in the first and second embodiments, if the flame hole plate 17 is formed of a heat-resistant material such as ceramic, the flame temperature tends to slightly increase, but the life can be extended even under a high load state. Further, although kerosene is used as the fuel, similar effects can be obtained with other liquid fuels and also with gaseous fuels.
ところで、本実施例1,2において予混合気の空気比は
各々1.0以下、1.0以上のバーナを示したが、必然性はな
い。逆に、実施例１は完全一次燃焼が可能であり、実施
例２においても燃焼室16上端に二次空気を適切に供給す
れば部分予混合燃焼も充分行えるのである。By the way, in the first and second embodiments, the burners having the air ratios of the premixed air of 1.0 or less and 1.0 or more, respectively, are not inevitable. Conversely, in the first embodiment, complete primary combustion is possible, and in the second embodiment, partial premixed combustion can be sufficiently performed by appropriately supplying secondary air to the upper end of the combustion chamber 16.
発明の効果 本発明は、複数個に分離された炎孔を一対一に対向さ
せて、マトリクス対向流火炎を構成することにより、定
常燃焼時の火炎温度低下による排ガス中のNOX低減を行
い、また異常燃焼時、或は燃焼量が極めて小さい場合の
不完全燃焼ガスの排出を防止し、その結果良好な燃焼特
性を有し、かつ安定燃焼範囲の広いバーナを提供する。Effect of the Invention The present invention is a flame port that has been separated into a plurality to face the one-to-one, by configuring the matrix counterflow flame performs NO X reduction in the exhaust gas due to flame temperature drop during steady burning, Further, the present invention prevents incomplete combustion gas from being discharged during abnormal combustion or when the amount of combustion is extremely small. As a result, a burner having good combustion characteristics and a wide stable combustion range is provided.
第１図は本発明の実施例１のバーナの一部断面斜視図、
第２図は本発明の実施例２のバーナの一部断面斜視図、
第３図は従来例のバーナの縦断面図である。 14……予混合気通路、15……予混合気供給管、16……燃
焼室、17……炎孔板、17′……側壁、18……炎孔、19…
…燃焼室出口、23……外壁。FIG. 1 is a partially sectional perspective view of a burner according to a first embodiment of the present invention,
FIG. 2 is a partially sectional perspective view of a burner according to a second embodiment of the present invention,
FIG. 3 is a longitudinal sectional view of a conventional burner. 14 ... premixed gas passage, 15 ... premixed gas supply pipe, 16 ... combustion chamber, 17 ... flame plate, 17 '... side wall, 18 ... flame hole, 19 ...
... combustion chamber outlet, 23 ... outer wall.
フロントページの続き (72)発明者 橋戸 健吉 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (72)発明者 藤田 龍夫 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 昭63−187015（ＪＰ，Ａ) 特開 昭63−187014（ＪＰ，Ａ)Continuing on the front page (72) Inventor Kenkichi Hashido 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. References JP-A-63-187015 (JP, A) JP-A-63-187014 (JP, A)
Claims (2)
板を前記炎孔が一対一に相対向するように対面させて配
設し、前記１対の炎孔板と側壁と燃焼室出口とから燃焼
室を形成し、前記炎孔が前記燃焼室出口方向に複数個並
んでおり、かつ前記炎孔が前記炎孔板の前記燃焼室外側
に設けた複数の予混合気供給管に各々通じており、各予
混合気供給管の周囲が二次空気等の流れる冷却通路とな
っており、炎孔板の燃焼室出口近傍に二次空気供給スリ
ットを設け、かつ前記炎孔が前記燃焼室出口方向に千鳥
配列されていることを特徴とするバーナ。At least one pair of flame holes having a plurality of holes is disposed so as to face each other so that said holes face each other one by one, and said pair of flame holes, a side wall and a combustion chamber are provided. A combustion chamber is formed from the outlet and a plurality of the flame holes are arranged in the combustion chamber outlet direction, and the flame holes are formed in a plurality of premixed gas supply pipes provided outside the combustion chamber of the flame hole plate. Each premixed gas supply pipe is connected to each other, and the periphery of each premixed gas supply pipe is a cooling passage through which secondary air or the like flows, a secondary air supply slit is provided near the combustion chamber outlet of the flame hole plate, and the flame hole is Burners characterized in that they are arranged in a staggered arrangement in the direction of the combustion chamber outlet.
たことを特徴とする請求項１記載のバーナ。2. The burner according to claim 1, wherein the flame plate is formed of a heat-resistant material such as ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63214035A JP2715463B2 (en) | 1988-08-29 | 1988-08-29 | Burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63214035A JP2715463B2 (en) | 1988-08-29 | 1988-08-29 | Burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0261405A JPH0261405A (en) | 1990-03-01 |
| JP2715463B2 true JP2715463B2 (en) | 1998-02-18 |
Family
ID=16649198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63214035A Expired - Fee Related JP2715463B2 (en) | 1988-08-29 | 1988-08-29 | Burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2715463B2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6020646A (en) * | 1983-07-15 | 1985-02-01 | Hitachi Ltd | Remote supervisory and controlling device for building |
| JP2568534B2 (en) * | 1987-01-29 | 1997-01-08 | 松下電器産業株式会社 | Burner |
| JPS63187008A (en) * | 1987-01-29 | 1988-08-02 | Matsushita Electric Ind Co Ltd | Burner |
| JPS63187015A (en) * | 1987-01-29 | 1988-08-02 | Matsushita Electric Ind Co Ltd | Burner |
-
1988
- 1988-08-29 JP JP63214035A patent/JP2715463B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0261405A (en) | 1990-03-01 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |