JPH10169975A - Combustor - Google Patents

Combustor

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Publication number
JPH10169975A
JPH10169975A JP32255396A JP32255396A JPH10169975A JP H10169975 A JPH10169975 A JP H10169975A JP 32255396 A JP32255396 A JP 32255396A JP 32255396 A JP32255396 A JP 32255396A JP H10169975 A JPH10169975 A JP H10169975A
Authority
JP
Japan
Prior art keywords
potential
detecting
potential difference
electrode
detecting means
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
Application number
JP32255396A
Other languages
Japanese (ja)
Inventor
Takeshi Nagai
彪 長井
Takahiro Umeda
孝裕 梅田
Akio Fukuda
明雄 福田
Kunihiro Tsuruta
邦弘 鶴田
Toshiro Ogino
俊郎 荻野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP32255396A priority Critical patent/JPH10169975A/en
Publication of JPH10169975A publication Critical patent/JPH10169975A/en
Pending legal-status Critical Current

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  • Control Of Combustion (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a means for detecting a combustion state even when silicon oxide is formed on the surface of electrode means or on a burner head surface. SOLUTION: There are provided a burner head 2 for combusting a fuel, first electrode means 19 making contact with charged particles produced with a flame 7, and first electric potential detection means 20 and second electric potential detection means 21 both fior detecting electric potential of charged particles. The first elecvtric poyential detection means 20 and the second electric potential detection means 21 detect different electric potentials of charged particles. There are further provided first load means 22 electrically connecting between the first electric potentasil detection means 20 and the second electric potential detection means 21 with predetermined impedance and first electric potential difference detection means 23 for detecting an electric potential difference between opposite ends of the first laod means 22. Since the combustion state is detected utilizing a predetermined correlation between a current and the electric potentials, the operation is ensured without being influenced by silicon oxide deposition.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は燃料を燃焼させる燃
焼装置に関する。[0001] The present invention relates to a combustion apparatus for burning fuel.

【０００２】[0002]

【従来の技術】従来この種の燃焼装置は、特開平６−１
０１８３４号公報および特開平６−２１３４３２号公報
などに記載されているようなものが一般的であった。こ
れらの装置は図１８に示されているようにフレームロッ
ド１とバーナヘッド２を用いていた。また、フレームロ
ッド１は図１９（ａ）に示されているように電極の表面
にミゾ１ａが形成されていたり、同図（ｂ）に示されて
いるように電極の先端に補助ロッド１ｂが溶接されてい
るなどの加工が施されていた。燃料は気化筒３において
ヒータ４により気化され、ノズル５から噴出されると同
時に空気と混合され、バーナーヘッド２の内部を通過
し、複数の炎孔６を通過するときに着火し、火炎７を形
成する。フレームロッド１はセラミックからなる絶縁体
８を介し、取り付け金具９により固定台１０に取り付け
られ、先端は火炎７に接触するように配置されていた。
さらにフレームロッド１とバーナヘッド２の間には電圧
供給手段１１として直流電圧電源および電流検出手段１
２として電流計が接続されていた。また、点火は点火手
段１３により行われ、例えば点火ロッド１４をセラミッ
クからなる絶縁体１５を介し、取り付け金具１６により
固定台１０に取り付け、交流電圧電源１７で高電圧を印
加することにより点火ロッド１４の先端とバーナヘッド
２の間に火花放電を発生させ点火するものが一般的であ
った。2. Description of the Related Art Conventionally, this type of combustion apparatus is disclosed in
No. 01834 and JP-A-6-213432 are generally used. These devices used a frame rod 1 and a burner head 2 as shown in FIG. Also, the frame rod 1 has a groove 1a formed on the surface of the electrode as shown in FIG. 19A, or an auxiliary rod 1b at the tip of the electrode as shown in FIG. Processing such as welding was performed. The fuel is vaporized by the heater 4 in the vaporization cylinder 3, is ejected from the nozzle 5, is mixed with air at the same time, passes through the inside of the burner head 2, ignites when passing through the plurality of flame holes 6, and ignites the flame 7. Form. The frame rod 1 was mounted on a fixed base 10 by a mounting bracket 9 via an insulator 8 made of ceramic, and the tip was arranged so as to contact the flame 7.
Further, a DC voltage power supply and a current detecting means 1
As 2, the ammeter was connected. The ignition is performed by an ignition means 13. For example, the ignition rod 14 is attached to the fixed base 10 by a mounting bracket 16 via an insulator 15 made of ceramic, and a high voltage is applied by an AC voltage power supply 17. In general, a spark discharge is generated between the tip of the burner and the burner head 2 to ignite.

【０００３】上記構成により、フレームロッド１とバー
ナヘッド２の間に一定の直流電圧を供給したときに流れ
る直流電流を検出し、その電流値から燃焼状態を判断
し、燃焼制御手段１８により燃焼を制御できるようにな
っていた。一般に燃焼火炎７中には熱電離により生じた
イオンや電子が多く存在しており、フレームロッド１と
バーナヘッド２の間に電圧を供給したときに電流が流れ
れば着火、流れなければ失火といった火炎７の有無を検
知することができる。また電流は燃焼空気中の酸素濃度
などの燃焼条件に大きく依存し、酸素濃度の低下により
不完全燃焼になると電流は小さくなり、電流が予め設定
したしきい値より小さければ、燃焼制御手段１８により
不完全燃焼と判断し、安全対策として換気を促すブザー
やランプといった警報を発したり強制的に燃焼を停止さ
せるなどの燃焼制御を行っていた。With the above configuration, a DC current flowing when a constant DC voltage is supplied between the flame rod 1 and the burner head 2 is detected, a combustion state is determined from the current value, and combustion is controlled by the combustion control means 18. I was able to control it. In general, the combustion flame 7 contains many ions and electrons generated by thermal ionization. If a current flows when a voltage is supplied between the flame rod 1 and the burner head 2, ignition occurs. The presence or absence of the flame 7 can be detected. Further, the current largely depends on combustion conditions such as the oxygen concentration in the combustion air, and the current decreases when incomplete combustion occurs due to a decrease in the oxygen concentration. Judgment was made as incomplete combustion, and as a safety measure, a combustion control such as issuing a warning such as a buzzer or a lamp for urging ventilation or forcibly stopping combustion was performed.

【０００４】ところで燃焼空気中に整髪料などに含まれ
る有機シリコーンが存在すると、フレームロッド１やバ
ーナヘッド２の表面に絶縁性のシリコン酸化物被膜が形
成され、フレームロッド１とバーナヘッド２の間に流れ
る電流が見掛け上小さくなるため正常燃焼であるにも関
らず異常燃焼と検知する可能性があるが、この燃焼装置
によればフレームロッド１にミゾ１ａが形成されていた
り、補助ロッド１ｂが溶接されていたりなどの加工が施
してあるため有機シリコーンの影響を受けることなく燃
焼状態を検出することができるとしている。図１９
（ａ）のように表面にミゾ１ａを設けた場合、ミゾ１ａ
の内側には飛散しているシリコンが入り込まないのでシ
リコン酸化物被膜が形成されず、電流が減少しないとし
ており、また図１９（ｂ）のように先端に補助ロッド１
ｂが溶接された場合、シリコン酸化物が形成されても、
２種類の金属の熱膨張率が異なるため温度変化によりそ
の表面に亀裂や孔食が生じ、その部分が新たな導通部と
なり、電流は減少しないので安定して燃焼状態を検出す
ることができるとしている。[0004] When organic silicone contained in a hairdressing material or the like is present in the combustion air, an insulating silicon oxide film is formed on the surface of the frame rod 1 and the burner head 2, and the gap between the frame rod 1 and the burner head 2 is formed. Since the current flowing through the combustion device is apparently small, there is a possibility that abnormal combustion may be detected in spite of normal combustion. However, according to this combustion device, the groove 1a is formed in the frame rod 1 or the auxiliary rod 1b It is said that the combustion state can be detected without being affected by the organosilicone because the steel has been subjected to processing such as welding. FIG.
When the groove 1a is provided on the surface as shown in FIG.
19A. Since the scattered silicon does not enter into the inside of the substrate, no silicon oxide film is formed and the current does not decrease. Further, as shown in FIG.
When b is welded, even if silicon oxide is formed,
Since the two metals have different coefficients of thermal expansion, cracks and pits occur on the surface due to temperature changes, and that part becomes a new conducting part, and the current does not decrease so that the combustion state can be detected stably. I have.

【０００５】[0005]

【発明が解決しようとする課題】しかしながら、従来の
燃焼装置は、電流を用いて燃焼状態を検出しており、フ
レームロッド１に加工を施し、耐シリコーン性を向上す
るとしているが、シリコン酸化物被膜の形成による電流
の低下はフレームロッド１ではなく相対的に表面積が大
きいバーナヘッド２に大きく依存しているので、フレー
ムロッド１に加工を施してもシリコン酸化物被膜の形成
により徐々に電流は低下し、シリコン酸化物被膜の付着
量が増加すると正常燃焼であるにもかかわらず、異常燃
焼であるという検知不良を起こし燃焼を強制的に停止さ
せるなどの燃焼制御が誤った動作をしてしまうという課
題を有していた。However, in the conventional combustion apparatus, the combustion state is detected by using an electric current, and processing is performed on the frame rod 1 to improve the silicone resistance. Since the decrease in the current due to the formation of the coating largely depends on the burner head 2 having a relatively large surface area instead of the frame rod 1, even if the frame rod 1 is processed, the current gradually increases due to the formation of the silicon oxide coating. If the amount of the silicon oxide film decreases and the amount of the silicon oxide film increases, a detection error of abnormal combustion may occur even though the combustion is normal, and the combustion control such as forcibly stopping the combustion may perform an incorrect operation. There was a problem that.

【０００６】さらに、シリコン酸化物被膜の形成された
フレームロッド１やバーナヘッド２はその都度交換する
必要があり、また経済的でないという課題を有してい
た。Furthermore, the frame rod 1 and the burner head 2 on which the silicon oxide film is formed must be replaced each time, and there is a problem that it is not economical.

【０００７】[0007]

【課題を解決するための手段】本発明は上記課題を解決
するために、燃料を燃焼させるバーナヘッドと、火炎に
より生成した荷電粒子と接触する第１電極手段と、前記
バーナヘッドと前記第１電極手段の間に電圧を印加する
電圧印加手段と、前記バーナヘッドと前記第１電極手段
の間に流れる電流を検出する電流検出手段と、前記荷電
粒子の電位を検出する第１電位検出手段および第２電位
検出手段を備え、前記第１電位検出手段と第２電位検出
手段は前記荷電粒子の異なる電位を検出し、前記第１電
位検出手段と前記第２電位検出手段間を一定のインピー
ダンスで電気的に接続する第１負荷手段と、前記第１負
荷手段の両端の電位差を検出する第１電位差検出手段を
備えた燃焼装置である。In order to solve the above-mentioned problems, the present invention provides a burner head for burning fuel, first electrode means for contacting charged particles generated by a flame, the burner head and the first electrode means. Voltage applying means for applying a voltage between the electrode means, current detecting means for detecting a current flowing between the burner head and the first electrode means, first potential detecting means for detecting the potential of the charged particles, and A second potential detecting means, wherein the first potential detecting means and the second potential detecting means detect different potentials of the charged particles, and a constant impedance is provided between the first potential detecting means and the second potential detecting means. A combustion apparatus comprising: first load means electrically connected; and first potential difference detecting means for detecting a potential difference between both ends of the first load means.

【０００８】第１電極手段表面やバーナヘッド表面への
シリコン酸化物付着の有無にかかわらず、すなわち、電
流の大小にかかわらず、第１電極手段とバーナヘッド間
の荷電粒子の電位分布は正常燃焼であれば、電流との間
で一定の相関関係が保たれる。本発明は、従来のように
電流のみを用いるのではなくて、前記の相関関係を用い
ている。すなわち、第１電位検出手段と第２電位検出手
段の間の電位を第１負荷手段を介して検出できるので、
シリコン酸化物付着の影響を受けることなく、また、検
出回路部の絶縁劣化に対しても安定的に、着火や失火な
ど燃焼状態を検知できる。[0008] Regardless of the presence or absence of silicon oxide on the surface of the first electrode means and the surface of the burner head, that is, regardless of the magnitude of the current, the potential distribution of charged particles between the first electrode means and the burner head is normal combustion. Then, a constant correlation with the current is maintained. The present invention uses the above-mentioned correlation, instead of using only the current as in the related art. That is, since the potential between the first potential detecting means and the second potential detecting means can be detected via the first load means,
A combustion state such as ignition or misfire can be detected without being affected by the adhesion of silicon oxide and stably with respect to insulation deterioration of the detection circuit portion.

【０００９】[0009]

【発明の実施の形態】本発明は、燃料を燃焼させるバー
ナヘッドと、火炎により生成した荷電粒子と接触する第
１電極手段と、前記バーナヘッドと前記第１電極手段の
間に電圧を印加する電圧印加手段と、前記バーナヘッド
と前記第１電極手段の間に流れる電流を検出する電流検
出手段と、前記荷電粒子の電位を検出する第１電位検出
手段および第２電位検出手段を備え、前記第１電位検出
手段と第２電位検出手段は前記荷電粒子の異なる電位を
検出し、前記第１電位検出手段と前記第２電位検出手段
間を一定のインピーダンスで電気的に接続する第１負荷
手段と、前記第１負荷手段の両端の電位差を検出する第
１電位差検出手段を備えたものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a burner head for burning fuel, first electrode means for contacting charged particles generated by a flame, and applying a voltage between the burner head and the first electrode means. Voltage applying means, current detecting means for detecting a current flowing between the burner head and the first electrode means, first potential detecting means for detecting the potential of the charged particles, and second potential detecting means, A first potential detecting means and a second potential detecting means for detecting different potentials of the charged particles, and a first load means for electrically connecting the first potential detecting means and the second potential detecting means with a constant impedance. And first potential difference detecting means for detecting a potential difference between both ends of the first load means.

【００１０】第１電極手段表面やバナヘッド表面へのシ
リコン酸化物付着の有無にかかわらず、すなわち、電流
の大小にかかわらず、第１電極手段と第２電極手段の間
の荷電粒子の電位差（Ｖ1）は正常燃焼であれば電流と
の間で一定の相関関係が保たれる。本発明によれば、従
来のように電流を用いるのではなくて、この相関関係を
用いているので、シリコン酸化物付着の影響を受けるこ
となく、着火や失火など燃焼状態を検知できる。また、
第１電位検出手段と第２電位検出手段の間の電位差（Ｖ
1）を第１負荷手段を介して検出できるので、通常の電
圧計を用いて電位差（Ｖ1）を容易に測定できる。ま
た、電位差（Ｖ1）は検出回路部の絶縁劣化に対しても
安定である。Regardless of the presence or absence of silicon oxide on the surface of the first electrode means or the surface of the burner head, that is, regardless of the magnitude of the current, the potential difference (V) of the charged particles between the first electrode means and the second electrode means. In 1 ), if the combustion is normal, a constant correlation with the current is maintained. According to the present invention, since the correlation is used instead of using the current as in the related art, a combustion state such as ignition or misfire can be detected without being affected by silicon oxide adhesion. Also,
The potential difference between the first potential detecting means and the second potential detecting means (V
Since 1 ) can be detected via the first load means, the potential difference (V 1 ) can be easily measured using an ordinary voltmeter. Further, the potential difference (V 1 ) is stable against insulation deterioration of the detection circuit portion.

【００１１】また、燃料を燃焼させるバーナヘッドと、
火炎により生成した荷電粒子と接触する第１電極手段お
よび第２電極手段と、前記第１電極手段と前記第２電極
手段の間に電圧を印加する電圧印加手段と、前記第１電
極手段と前記第２電極手段の間に流れる電流を検出する
電流検出手段と、前記荷電粒子の電位を検出する第１電
位検出手段および第２電位検出手段を備え、前記第１電
位検出手段と第２電位検出手段は、前記荷電粒子の異な
る電位を検出し、前記第１電位検出手段と前記第２電位
検出手段間を一定のインピーダンスで電気的に接続する
第１負荷手段と、前記第１負荷手段の両端の電位差を検
出する第１電位差検出手段を備えたものである。A burner head for burning fuel;
A first electrode unit and a second electrode unit that are in contact with charged particles generated by the flame; a voltage applying unit that applies a voltage between the first electrode unit and the second electrode unit; A current detecting means for detecting a current flowing between the second electrode means, a first potential detecting means and a second potential detecting means for detecting a potential of the charged particles, wherein the first potential detecting means and the second potential detecting means are provided. Means for detecting different potentials of the charged particles, electrically connecting the first potential detecting means and the second potential detecting means with a constant impedance, and both ends of the first loading means 1st potential difference detecting means for detecting the potential difference of

【００１２】バーナヘッドは、多くの場合ステンレスな
どの高耐熱性導電材料で構成されるが、セラミックなど
の高耐熱性絶縁材料で構成される場合もある。バーナヘ
ッドが導電性材料で構成される場合、バーナヘッドは電
極としても作用できる。しかし、バーナヘッドが絶縁性
材料で構成される場合、バーナヘッドは電極として作用
できない。このような場合、火炎により生成した荷電粒
子と接触する第２電極手段を設けることにより、前述し
た相関関係を用いることができる。The burner head is often made of a highly heat-resistant conductive material such as stainless steel, but may be made of a highly heat-resistant insulating material such as ceramic. If the burner head is made of a conductive material, the burner head can also act as an electrode. However, when the burner head is made of an insulating material, the burner head cannot function as an electrode. In such a case, the above-described correlation can be used by providing the second electrode means that comes into contact with charged particles generated by the flame.

【００１３】また、燃料を燃焼させるバーナヘッドと、
火炎により生成した荷電粒子と接触する第１電極手段
と、前記バーナヘッドと前記第１電極手段の間に電圧を
印加する電圧印加手段と、前記バーナヘッドと前記第１
電極手段の間に流れる電流を検出する電流検出手段と、
前記荷電粒子の電位を検出する第１電位検出手段と、前
記第１電位検出手段と前記バーナヘッド間を一定のイン
ピーダンスで電気的に接続する第２負荷手段と、前記第
２負荷手段の両端の電位差を検出する第２電位差検出手
段を備えたものである。A burner head for burning fuel;
First electrode means for contacting charged particles generated by the flame; voltage applying means for applying a voltage between the burner head and the first electrode means;
Current detection means for detecting a current flowing between the electrode means,
First potential detection means for detecting the potential of the charged particles, second load means for electrically connecting the first potential detection means and the burner head with a constant impedance, and both ends of the second load means It is provided with second potential difference detecting means for detecting a potential difference.

【００１４】本構成では、バーナヘッド電位と第１電位
検出手段電位の間の電位差（Ｖ2）を第２負荷手段を介
して検出するので、通常の電圧計を用いて容易に測定で
きる。この電位差（Ｖ2）はバーナヘッドと第１電位検
出手段電位の間の電位差であるので、バーナヘッドにシ
リコン酸化物が付着したとき、そのシリコン酸化物部で
の大きな電位降下も含まれる。従って、この電位差（Ｖ
2）を検出することによりバーナヘッドへのシリコン酸
化物付着を検出できる。In this configuration, since the potential difference (V 2 ) between the burner head potential and the first potential detecting means potential is detected via the second load means, it can be easily measured using an ordinary voltmeter. Since this potential difference (V 2 ) is a potential difference between the burner head and the first potential detecting means potential, when silicon oxide adheres to the burner head, a large potential drop in the silicon oxide portion is also included. Therefore, this potential difference (V
By detecting 2 ), the adhesion of silicon oxide to the burner head can be detected.

【００１５】また、燃料を燃焼させるバーナヘッドと、
火炎により生成した荷電粒子と接触する第１電極手段お
よび第２電極手段と、前記バーナヘッドと前記第１電極
手段の間に電圧を印加する電圧印加手段と、前記第１電
極手段と前記第２電極手段の間に流れる電流を検出する
電流検出手段と、前記荷電粒子の電位を検出する第１電
位検出手段と、前記第１電位検出手段と前記第２電極手
段間を一定のインピーダンスで電気的に接続する第２負
荷手段と、前記第２負荷手段の両端の電位差を検出する
第２電位差検出手段を備えたものである。A burner head for burning fuel;
First and second electrode means for contacting charged particles generated by the flame, voltage applying means for applying a voltage between the burner head and the first electrode means, the first electrode means and the second electrode means; Current detection means for detecting a current flowing between the electrode means, first potential detection means for detecting the potential of the charged particles, and electrical connection between the first potential detection means and the second electrode means with a constant impedance. And second potential difference detecting means for detecting a potential difference between both ends of the second load means.

【００１６】本構成では、バーナヘッドが絶縁性であっ
ても、荷電粒子と接触する第２電極手段が設けられてい
るので、第２電極手段にシリコン酸化物が付着したと
き、そのシリコン酸化物部での大きな電位降下は、第１
電位差検出手段と第２電極手段の間の電位差（Ｖ2）に
含まれ、第２負荷手段を介して検出される。この電位差
（Ｖ2）を検出することにより第２電極手段へのシリコ
ン酸化物付着を検出できる。In this configuration, even if the burner head is insulative, the second electrode means for contacting the charged particles is provided. Therefore, when silicon oxide adheres to the second electrode means, the silicon oxide The large potential drop in the part
It is included in the potential difference (V 2 ) between the potential difference detecting means and the second electrode means, and is detected via the second load means. By detecting this potential difference (V 2 ), adhesion of silicon oxide to the second electrode means can be detected.

【００１７】また、燃料を燃焼させるバーナヘッドと、
火炎により生成した荷電粒子と接触する第１電極手段
と、前記バーナヘッドと前記第１電極手段の間に電圧を
印加する電圧印加手段と、前記バーナヘッドと前記第１
電極手段の間に流れる電流を検出する電流検出手段と、
前記荷電粒子の電位を検出する第１電位検出手段と、前
記第１電位検出手段と前記第１電極手段間を一定のイン
ピーダンスで電気的に接続する第３負荷手段と、前記第
３負荷手段の両端の電位差を検出する第３電位差検出手
段を備えたものである。A burner head for burning fuel;
First electrode means for contacting charged particles generated by the flame; voltage applying means for applying a voltage between the burner head and the first electrode means;
Current detection means for detecting a current flowing between the electrode means,
First potential detecting means for detecting the potential of the charged particles, third load means for electrically connecting the first potential detecting means and the first electrode means with a constant impedance, and It is provided with a third potential difference detecting means for detecting a potential difference between both ends.

【００１８】本構成では、第１電極手段と第１電位検出
手段電位の間の電位差（Ｖ3）を第３負荷手段を介して
検出するので、通常の電圧計を用いて容易に測定でき
る。第１電極手段表面へのシリコン酸化物付着により電
流が大きく減少したとき、この電位差（Ｖ3）は僅かに
減少するだけである。従って、電流と電位差（Ｖ3）の
相互関係を監視することにより第１電極手段へのシリコ
ン酸化物付着を検出できる。In this configuration, since the potential difference (V 3 ) between the potential of the first electrode means and the potential of the first potential detection means is detected via the third load means, it can be easily measured using a normal voltmeter. This potential difference (V 3 ) only slightly decreases when the current is greatly reduced due to the deposition of silicon oxide on the surface of the first electrode means. Therefore, by monitoring the correlation between the current and the potential difference (V 3 ), the adhesion of silicon oxide to the first electrode means can be detected.

【００１９】また、燃料を燃焼させるバーナヘッドと、
火炎により生成した荷電粒子と接触する第１電極手段お
よび第２電極手段と、前記バーナヘッドと前記第１電極
手段の間に電圧を印加する電圧印加手段と、前記第１電
極手段と前記第２電極手段の間に流れる電流を検出する
電流検出手段と、前記荷電粒子の電位を検出する第１電
位検出手段と、前記第１電位検出手段と前記第１電極手
段間を一定のインピーダンスで電気的に接続する第３負
荷手段と、前記第３負荷手段の両端の電位差を検出する
第３電位差検出手段を備えたものである。A burner head for burning fuel;
First and second electrode means for contacting charged particles generated by the flame, voltage applying means for applying a voltage between the burner head and the first electrode means, the first electrode means and the second electrode means; Current detection means for detecting a current flowing between the electrode means, first potential detection means for detecting the potential of the charged particles, and electrical connection between the first potential detection means and the first electrode means with a constant impedance. And third potential difference detecting means for detecting a potential difference between both ends of the third load means.

【００２０】本構成では、バーナヘッドが絶縁性であっ
ても、荷電粒子と接触する第２電極手段が設けられてい
るので、第１電位差検出手段と第１電極手段の間の電位
差（Ｖ3）を検出できる。第１電極手段表面へのシリコ
ン酸化物付着により電流が大きく減少したとき、この電
位差（Ｖ3）は僅かに減少するだけである。従って、電
流と電位差（Ｖ3）の相互関係を監視することにより第
１電極手段へのシリコン酸化物付着を検出できる。In this configuration, even if the burner head is insulative, since the second electrode means for contacting the charged particles is provided, the potential difference (V 3) between the first potential difference detecting means and the first electrode means is provided. ) Can be detected. This potential difference (V 3 ) only slightly decreases when the current is greatly reduced due to the deposition of silicon oxide on the surface of the first electrode means. Therefore, by monitoring the correlation between the current and the potential difference (V 3 ), the adhesion of silicon oxide to the first electrode means can be detected.

【００２１】また、燃料を燃焼させるバーナヘッドと、
火炎により生成した荷電粒子と接触する第１電極手段
と、前記バーナヘッドと前記第１電極手段の間に電圧を
印加する電圧印加手段と、前記バーナヘッドと前記第１
電極手段の間に流れる電流を検出する電流検出手段と、
前記荷電粒子の電位を検出する第１電位検出手段および
第２電位検出手段を備え、前記第１電位検出手段と第２
電位検出手段は前記荷電粒子の異なる電位を検出し、前
記第１電位検出手段と前記第２電位検出手段間を一定の
インピーダンスで電気的に接続する第１負荷手段と、前
記第１負荷手段の両端の電位差を検出する第１電位差検
出手段と、前記第２電位検出手段と前記バーナヘッド間
を一定のインピーダンスで電気的に接続する第２負荷手
段と、前記第２負荷手段の両端の電位差を検出する第２
電位差検出手段を備えたものである。A burner head for burning fuel;
First electrode means for contacting charged particles generated by the flame; voltage applying means for applying a voltage between the burner head and the first electrode means;
Current detection means for detecting a current flowing between the electrode means,
A first potential detecting means for detecting a potential of the charged particles; and a second potential detecting means for detecting the potential of the charged particles.
A potential detecting means for detecting different potentials of the charged particles; a first load means for electrically connecting the first potential detecting means and the second potential detecting means with a constant impedance; A first potential difference detecting means for detecting a potential difference between both ends, a second load means for electrically connecting the second potential detecting means and the burner head with a constant impedance, and a potential difference between both ends of the second load means. Second to detect
It is provided with a potential difference detecting means.

【００２２】第１電位検出手段と第２電位検出手段の間
の電位差（Ｖ1）は、第１負荷手段を介して、第１電位
差検出手段により検出される。この電位差（Ｖ1）は、
電流の大小にかかわらず、正常燃焼であれば、電流との
間で一定の相関関係が保たれる。従って、この電位差
（Ｖ1）を検出することによりシリコン酸化物付着の影
響を受けることなく容易に着火状態や失火状態などの燃
焼状態を検知できる。また、第２電位検出手段とバーナ
ヘッドの間の電位差（Ｖ2）は、第２負荷手段を介し
て、第２電位差検出手段により検出される。。この電位
差（Ｖ2）は、バーナヘッドと第２電位検出手段電位の
間の電位差であるので、バーナヘッドにシリコン酸化物
が付着したとき、そのシリコン酸化物部での大きな電位
降下も含まれる。従って、この電位差（Ｖ2）を検出す
ることによりバーナヘッドへのシリコン酸化物付着を検
出できる。本構成では、電位差（Ｖ1）と電位差（Ｖ2）
の両者を同時に検出できるので、電位差（Ｖ1）により
シリコン酸化物付着の影響を受けることなく燃焼状態を
検知すると同時に、他方で、電位差（Ｖ2）によりバー
ナヘッドへのシリコン酸化物付着を監視することができ
る。The potential difference (V 1 ) between the first potential detecting means and the second potential detecting means is detected by the first potential difference detecting means via the first load means. This potential difference (V 1 )
Regardless of the magnitude of the current, a constant correlation with the current is maintained during normal combustion. Therefore, by detecting this potential difference (V 1 ), a combustion state such as an ignition state or a misfire state can be easily detected without being affected by the adhesion of silicon oxide. The potential difference (V 2 ) between the second potential detecting means and the burner head is detected by the second potential difference detecting means via the second load means. . Since this potential difference (V 2 ) is a potential difference between the burner head and the potential of the second potential detecting means, when silicon oxide adheres to the burner head, a large potential drop in the silicon oxide portion is also included. Accordingly, by detecting this potential difference (V 2 ), the adhesion of silicon oxide to the burner head can be detected. In this configuration, the potential difference (V 1 ) and the potential difference (V 2 )
Can be detected at the same time, so that the combustion state can be detected without being affected by the silicon oxide adhesion by the potential difference (V 1 ), and at the same time, the silicon oxide adhesion to the burner head can be monitored by the potential difference (V 2 ). can do.

【００２３】また、燃料を燃焼させるバーナヘッドと、
火炎により生成した荷電粒子と接触する第１電極手段お
よび第２電極手段と、前記第１電極手段と前記第２電極
手段の間に電圧を印加する電圧印加手段と、前記第１電
極手段と前記第２電極手段の間に流れる電流を検出する
電流検出手段と、前記荷電粒子の電位を検出する第１電
位検出手段および第２電位検出手段を備え、前記第１電
位検出手段と第２電位検出手段は前記荷電粒子の異なる
電位を検出し、前記第１電位検出手段と前記第２電位検
出手段間を一定のインピーダンスで電気的に接続する第
１負荷手段と、前記第１負荷手段の両端の電位差を検出
する第１電位差検出手段と、前記第２電位検出手段と前
記第２電極手段間を一定のインピーダンスで電気的に接
続する第２負荷手段と、前記第２負荷手段の両端の電位
差を検出する第２電位差検出手段を備えたものである。A burner head for burning fuel;
A first electrode unit and a second electrode unit that are in contact with charged particles generated by the flame; a voltage applying unit that applies a voltage between the first electrode unit and the second electrode unit; A current detecting means for detecting a current flowing between the second electrode means, a first potential detecting means and a second potential detecting means for detecting a potential of the charged particles, wherein the first potential detecting means and the second potential detecting means are provided. Means for detecting different electric potentials of the charged particles, first load means for electrically connecting the first electric potential detection means and the second electric potential detection means with a constant impedance, and both ends of the first load means. A first potential difference detecting means for detecting a potential difference, a second load means for electrically connecting the second potential detecting means and the second electrode means with a constant impedance, and a potential difference between both ends of the second load means. Second to detect Those having a position difference detecting means.

【００２４】本構成では、バーナヘッドが絶縁性であっ
ても、荷電粒子と接触する第２電極手段が設けられてい
るので、第１電位検出手段と第２電位検出手段の間の電
位差（Ｖ1）も、第２電位検出手段とバーナヘッドの間
の電位差（Ｖ2）も検出できる。従って、本構成では、
バーナヘッドが絶縁性であっても、電位差（Ｖ1）と電
位差（Ｖ2）の両者を同時に検出できるので、電位差
（Ｖ1）によりシリコン酸化物付着の影響を受けること
なく燃焼状態を検知すると同時に、他方で、電位差（Ｖ
2）によりバーナヘッドへのシリコン酸化物付着を監視
することができる。In this configuration, even if the burner head is insulative, since the second electrode means for contacting the charged particles is provided, the potential difference (V) between the first potential detecting means and the second potential detecting means is provided. 1 ) can also detect the potential difference (V 2 ) between the second potential detecting means and the burner head. Therefore, in this configuration,
Even burner head insulation, the potential difference (V 1) and the potential difference of both the (V 2) can be detected simultaneously, when detecting no combustion condition being affected by the potential difference (V 1) silicon oxide deposited by At the same time, on the other hand, the potential difference (V
2 ) It is possible to monitor the adhesion of silicon oxide to the burner head.

【００２５】また、燃料を燃焼させるバーナヘッドと、
火炎により生成した荷電粒子と接触する第１電極手段
と、前記バーナヘッドと前記第１電極手段の間に電圧を
印加する電圧印加手段と、前記バーナヘッドと前記第１
電極手段の間に流れる電流を検出する電流検出手段と、
前記荷電粒子の電位を検出する第１電位検出手段および
第２電位検出手段を備え、前記第１電位検出手段と第２
電位検出手段は前記荷電粒子の異なる電位を検出し、前
記第１電位検出手段と前記第２電位検出手段間を一定の
インピーダンスで電気的に接続する第１負荷手段と、前
記第１負荷手段の両端の電位差を検出する第１電位差検
出手段と、前記第１電位検出手段と前記第１電極手段間
を一定のインピーダンスで電気的に接続する第３負荷手
段と、前記第３負荷手段の両端の電位差を検出する第３
電位差検出手段を備えたものである。A burner head for burning fuel;
First electrode means for contacting charged particles generated by the flame; voltage applying means for applying a voltage between the burner head and the first electrode means;
Current detection means for detecting a current flowing between the electrode means,
A first potential detecting means for detecting a potential of the charged particles; and a second potential detecting means for detecting the potential of the charged particles.
A potential detecting means for detecting different potentials of the charged particles; a first load means for electrically connecting the first potential detecting means and the second potential detecting means with a constant impedance; First potential difference detecting means for detecting a potential difference between both ends, third load means for electrically connecting the first potential detecting means and the first electrode means with a fixed impedance, and both ends of the third load means. Third to detect potential difference
It is provided with a potential difference detecting means.

【００２６】本構成では、電位差（Ｖ1）と電位差
（Ｖ3）の両者を同時に検出できるので、電位差（Ｖ1）
によりシリコン酸化物付着の影響を受けることなく燃焼
状態を検知すると同時に、他方で、電流と電位差
（Ｖ3）の相互関係を監視することにより第１電極手段
へのシリコン酸化物付着を検出できる。In this configuration, since both the potential difference (V 1 ) and the potential difference (V 3 ) can be detected simultaneously, the potential difference (V 1 )
Thus, the combustion state can be detected without being affected by the deposition of silicon oxide, and on the other hand, the deposition of silicon oxide on the first electrode means can be detected by monitoring the correlation between the current and the potential difference (V 3 ).

【００２７】また、燃料を燃焼させるバーナヘッドと、
火炎により生成した荷電粒子と接触する第１電極手段お
よび第２電極手段と、前記第１電極手段と前記第２電極
手段の間に電圧を印加する電圧印加手段と、前記第１電
極手段と前記第２電極手段の間に流れる電流を検出する
電流検出手段と、前記荷電粒子の電位を検出する第１電
位検出手段および第２電位検出手段を備え、前記第１電
位検出手段と第２電位検出手段は前記荷電粒子の異なる
電位を検出し、前記第１電位検出手段と前記第２電位検
出手段間を一定のインピーダンスで電気的に接続する第
１負荷手段と、前記第１負荷手段の両端の電位差を検出
する第１電位差検出手段と、前記第１電位検出手段と前
記第１電極手段間を一定のインピーダンスで電気的に接
続する第３負荷手段と、前記第３負荷手段の両端の電位
差を検出する第３電位差検出手段を備えたものである。A burner head for burning fuel;
A first electrode unit and a second electrode unit that are in contact with charged particles generated by the flame; a voltage applying unit that applies a voltage between the first electrode unit and the second electrode unit; A current detecting means for detecting a current flowing between the second electrode means, a first potential detecting means and a second potential detecting means for detecting a potential of the charged particles, wherein the first potential detecting means and the second potential detecting means are provided. Means for detecting different electric potentials of the charged particles, first load means for electrically connecting the first electric potential detection means and the second electric potential detection means with a constant impedance, and both ends of the first load means. A first potential difference detecting means for detecting a potential difference, a third load means for electrically connecting the first potential detecting means and the first electrode means with a constant impedance, and a potential difference between both ends of the third load means. Third to detect Those having a position difference detecting means.

【００２８】本構成では、バーナヘッドが絶縁性であっ
ても、荷電粒子と接触する第２電極手段が設けられてい
るので、第１電位検出手段と第２電位検出手段の間の電
位差（Ｖ1）も、第１電極手段と第１電位検出手段の間
の電位差（Ｖ3）も検出できる。従って、本構成では、
バーナヘッドが絶縁性であっても、電位差（Ｖ1）と電
位差（Ｖ3）の両者を同時に検出できるので、電位差
（Ｖ1）によりシリコン酸化物付着の影響を受けること
なく燃焼状態を検知すると同時に、他方で、電流と電位
差（Ｖ3）の相互関係を監視することにより第１電極手
段へのシリコン酸化物付着を検出できる。In this configuration, even if the burner head is insulative, since the second electrode means for contacting the charged particles is provided, the potential difference (V) between the first potential detecting means and the second potential detecting means is provided. 1 ) can also detect the potential difference (V 3 ) between the first electrode means and the first potential detecting means. Therefore, in this configuration,
Even if the burner head is insulative, since both the potential difference (V 1 ) and the potential difference (V 3 ) can be detected at the same time, if the combustion state is detected without being affected by the silicon oxide adhesion by the potential difference (V 1 ) At the same time, on the other hand, by monitoring the correlation between the current and the potential difference (V 3 ), the deposition of silicon oxide on the first electrode means can be detected.

【００２９】以下、本発明の実施例を図面に従い説明す
る。なお、従来例と同一部分には同一符号をつけ説明は
省略する。また、気化筒３など本発明の必須要件でない
部分は、図面で省略している。Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted. In addition, parts not essential to the present invention, such as the vaporizing cylinder 3, are omitted in the drawings.

【００３０】（実施例１）図１は、本発明の実施例１の
燃焼装置の構成を示す断面図である。(Embodiment 1) FIG. 1 is a sectional view showing the structure of a combustion apparatus according to Embodiment 1 of the present invention.

【００３１】一般的にガス状燃料に予め理論燃焼空気量
以下の１次空気を混合した混合ガスを複数の炎孔６より
噴出させて燃焼させるが、炎孔６のごく近傍に可燃ガス
と予混合された１次空気との燃焼反応による内炎７ａが
形成され、さらにこの内炎の外側に周囲からの２次空気
との燃焼反応による外炎７ｂが形成される。前記内炎７
ａは目視で明るく輝いて見え、外炎７ｂは透明に近い燃
焼炎となり全体の火炎７を形成している。この火炎７に
荷電粒子（イオンと電子）が存在する。第１電極手段１
９の一方の端部は、火炎７により生成した荷電粒子と接
触し、他端は電圧印加手段１１や電流検出手段１２を介
してバーナヘッド２に接続されている。第１電極手段１
９は，従来燃焼装置におけるフレームロッド１と同等の
作用を担っている。前記したように火炎７は、内炎７ａ
および外炎７ｂより形成され、多くの荷電粒子（イオン
と電子）が存在する。特に荷電粒子は内炎７ａにより多
く存在するが、外炎７ｂにも少ない密度であるにしても
荷電粒子は存在する。荷電粒子が無視できる程度に少な
い場合、例えば、火炎７が存在しないとき、すなわち、
燃焼が停止した状態では、電圧印加手段１１により、
（１０〜２０）Ｖの電圧を第１電極手段１９とバーナヘ
ッド２に印加しても、殆ど電流は流れない。しかし、正
常燃焼状態で第１電極手段１９を内炎７ａから数ｍｍ離
れた位置に配置しても、上記電圧を印加したとき、数μ
Ａ以上の電流が流れる。このことは、内炎７ａの近傍お
よび外炎７ｂにも荷電粒子が存在することを示す。第１
電極手段１９とバーナヘッド２間に流れる電流は、例え
ば、一定の抵抗値を有する抵抗体の両端の電圧から求め
る電流検出手段１２により検出される。もちろん、抵抗
体の代わりに電流計を用いてもよい。In general, a gas mixture of gaseous fuel and primary air having a theoretical combustion air amount or less is ejected from a plurality of flame holes 6 and burned. An inner flame 7a is formed by a combustion reaction with the mixed primary air, and an outer flame 7b is formed outside the inner flame by a combustion reaction with secondary air from the surroundings. Endflame 7
“a” looks bright and shining visually, and the outer flame 7 b becomes a nearly transparent combustion flame and forms the entire flame 7. Charged particles (ions and electrons) are present in the flame 7. First electrode means 1
One end of 9 is in contact with charged particles generated by the flame 7, and the other end is connected to the burner head 2 via a voltage applying unit 11 and a current detecting unit 12. First electrode means 1
9 has the same function as the frame rod 1 in the conventional combustion device. As described above, the flame 7 is an inner flame 7a.
And a large number of charged particles (ions and electrons) formed from the outer flame 7b. Particularly, more charged particles are present in the inner flame 7a, but charged particles are present in the outer flame 7b even if the density is lower. When the number of charged particles is negligibly small, for example, when the flame 7 does not exist, that is,
In a state where the combustion is stopped, the voltage applying means 11
Even if a voltage of (10 to 20) V is applied to the first electrode means 19 and the burner head 2, almost no current flows. However, even if the first electrode means 19 is arranged at a position several mm away from the internal flame 7a in a normal combustion state, when the above voltage is applied, several μm
A current of A or more flows. This indicates that charged particles are present near the inner flame 7a and also in the outer flame 7b. First
The current flowing between the electrode means 19 and the burner head 2 is detected by, for example, the current detecting means 12 obtained from the voltage across the resistor having a constant resistance value. Of course, an ammeter may be used instead of the resistor.

【００３２】第１電位検出手段２０および第２電位検出
手段２１は、高耐熱性金属体で構成され、その一方の端
部は荷電粒子と接触する位置に配置されている。第１電
位検出手段２０および第２電位検出手段２１は、第１電
極手段１９と同様、絶縁体８を介して固定台（図示な
し）に取り付けられる。また、第２電位検出手段２１よ
りも第１電位検出手段２０を第１電極手段１９の近くに
配置している。第１電極手段１９とバーナヘッド２の間
に電流が流れているとき、両者の間には電位勾配が存在
し、電流は空間的に広がりをもって流れるので、荷電粒
子の等電位面が、電流の流れ方向に対して直交して存在
する。第１電位検出手段２０および第２電位検出手段２
１のそれぞれに接触する等電位面が存在する。第１電位
検出手段２０および第２電位検出手段２１は、導電性で
あるので、これらの電位は、接触する等電位面と同じ電
位になる。The first potential detecting means 20 and the second potential detecting means 21 are made of a highly heat-resistant metal body, and one end thereof is arranged at a position in contact with the charged particles. The first potential detecting means 20 and the second potential detecting means 21 are attached to a fixed base (not shown) via the insulator 8, similarly to the first electrode means 19. Further, the first potential detecting means 20 is arranged closer to the first electrode means 19 than the second potential detecting means 21 is. When a current flows between the first electrode means 19 and the burner head 2, there is a potential gradient between the two and the current flows spatially, so that the equipotential surface of the charged particles is Present perpendicular to the flow direction. First potential detecting means 20 and second potential detecting means 2
There is an equipotential surface in contact with each one. Since the first potential detecting means 20 and the second potential detecting means 21 are conductive, these potentials become the same as the contacting equipotential surface.

【００３３】荷電粒子と接触する第１電極手段１９の端
部表面にシリコン酸化物が形成された場合、このシリコ
ン酸化物は絶縁性であるので、たとえ正常燃焼状態であ
っても、当然電流は減少する。しかし、電流は減少して
も正常燃焼であれば、第１電極手段１９とバーナヘッド
２の間には、その電流値に対応した一定の電位勾配が存
在し、また、等電位面も存在することは明らかである。
すなわち、第１電位検出手段２０に接触する等電位面と
第２電位検出手段２１に接触する等電位面の間の電位差
（Ｖ1）は、同等電位面間の抵抗をＲｂ、シリコン酸化
物の形成されないときの電流をＩｉ、形成されたときの
電流をＩｓｉとすると、正常燃焼であれば、抵抗（Ｒ
ｂ）はシリコン酸化物の有無にかかわらず同じである。
従って、シリコン酸化物の形成されないときの電位差
（Ｖ1）は（Ｒｂ＊Ｉｉ）であり、形成されたときの同
電位差（Ｖ1）は（Ｒｂ＊Ｉｓｉ）である。抵抗（Ｒ
ｂ）は正常時の電位差（Ｖ1）と電流（Ｉｉ）から求め
られるので、シリコン酸化物形成時の電流（Ｉｓｉ）の
値に応じた電位（Ｒｂ＊Ｉｓｉ）が検出されれば、燃焼
状態は正常であることが検出でき、検出された電位が
（Ｒｂ＊Ｉｓｉ）と異なる場合、正常燃焼でないことが
検出できる。従って、シリコン酸化物形成により小さな
電流（Ｉｓｉ）が流れるときでも燃焼状態を検出できる
ことは明らかである。When silicon oxide is formed on the end surface of the first electrode means 19 in contact with the charged particles, the silicon oxide is insulative, so that even if it is in a normal combustion state, the current naturally flows. Decrease. However, if the current is normal combustion even if the current decreases, there is a constant potential gradient corresponding to the current value between the first electrode means 19 and the burner head 2, and an equipotential surface also exists. It is clear.
That is, the potential difference (V 1 ) between the equipotential surface in contact with the first potential detecting means 20 and the equipotential surface in contact with the second potential detecting means 21 is such that the resistance between the equivalent potential surfaces is Rb, Assuming that the current when not formed is Ii and the current when formed is Isi, the resistance (R
b) is the same with or without silicon oxide.
Therefore, the potential difference when no formed of silicon oxide (V 1) is (Rb * Ii), the potential difference when formed (V 1) is a (Rb * Isi). Resistance (R
Since b) is obtained from the potential difference (V 1 ) at normal time and the current (Ii), if the potential (Rb * Isi) corresponding to the value of the current (Isi) at the time of forming the silicon oxide is detected, the combustion state Is normal, and when the detected potential is different from (Rb * Isi), it can be detected that the combustion is not normal. Therefore, it is clear that the combustion state can be detected even when a small current (Isi) flows due to silicon oxide formation.

【００３４】この電位差（Ｖ1）は、第１負荷手段２２
を介して第１電位差検出手段２３により検出される。第
１電位差検出手段２３として、電圧計が利用され、例え
ば、エレクトロメータやデジタル電圧計などがある。エ
レクトロメータは、１０９（以上の大きな入力抵抗を有
しているので、第１負荷手段２２のインピーダンスが１
０８（以上であっても、電位差（Ｖ1）は、エレクトロ
メータにより容易に測定できる。しかし、通常の測定で
多様されるデジタル電圧計の入力抵抗は、実用的には、
１００ＭΩ程度であるので、第１負荷手段２２のインピ
ーダンスが１０ＭΩ以下であることが好ましい。なお、
電流はシリコン酸化物付着に関わらず大きなゆらぎを示
すので、電位差（Ｖ1）も大きなゆらぎを示す。この場
合、第１負荷手段２２は、例えば、１ＭΩの抵抗器と数
μＦのコンデンサの並列接続回路で構成されることが望
ましい。電位差（Ｖ1）のゆらぎをコンデンサでバイパ
スすることにより、直流成分を容易に取り出せるからで
ある。This potential difference (V 1 ) is supplied to the first load means 22
And is detected by the first potential difference detecting means 23 via. A voltmeter is used as the first potential difference detecting means 23, and examples thereof include an electrometer and a digital voltmeter. Since the electrometer has a large input resistance of 109 (or more, the impedance of the first load
08 (or more, the potential difference (V 1 ) can be easily measured with an electrometer. However, the input resistance of a digital voltmeter that is diversified by ordinary measurement is practically
Since it is about 100 MΩ, it is preferable that the impedance of the first load means 22 is 10 MΩ or less. In addition,
Since the current shows a large fluctuation regardless of silicon oxide adhesion, the potential difference (V 1 ) also shows a large fluctuation. In this case, it is desirable that the first load means 22 be constituted by a parallel connection circuit of a resistor of 1 MΩ and a capacitor of several μF, for example. This is because a DC component can be easily taken out by bypassing the fluctuation of the potential difference (V 1 ) with a capacitor.

【００３５】シリコン酸化物がバーナヘッド２の表面に
形成された場合も、あるいは、シリコン酸化物が第１電
極手段１９の表面にもバーナヘッド２の表面にも形成さ
れた場合も、この状況は、上述した状態と全く同じであ
る。This situation is the same whether the silicon oxide is formed on the surface of the burner head 2 or the silicon oxide is formed on the surface of the first electrode means 19 or the surface of the burner head 2. , Exactly the same as described above.

【００３６】燃焼器として家庭用石油ファンヒータを、
電圧印加手段１１として直流電源（２４Ｖ）を、第１電
極手段１９・第１電位検出手段２０および第２電位検出
手段２１としてステンレス線（直径２ｍｍ）を、第１負
荷手段２２として（０．１〜１０）ＭΩの抵抗器用い
て、正常灯油を燃焼させたときの第１負荷手段２２のイ
ンピーダンス（Ｚ1）と第１電位検出手段２０と第２電
位検出手段２１の間の電位差（Ｖ1）の関係（Ｚ1ーＶ1
特性）を図２に示す。なお、第１電位検出手段２０は第
２電位検出手段２１よりも第１電極手段近傍に配置し、
荷電粒子の異なる電位を検出している。また、Ｖ1は、
第１電位差検出手段２３として、入力抵抗の大きなエレ
クトロメータを用いて測定した。同図に示すように、電
位差（Ｖ1）はインピーダンス（Ｚ１）の増加と共に直
線的に増加した。従って、インピーダンス（Ｚ１）を大
きくした方が大きな電位差信号（Ｖ1）を得られる点で
優れている。しかし、エレクトロメータは高価であるの
で、家庭用燃焼器や産業用燃焼器などで第１電位差検出
手段２３として用いることは実用的でない。特に、家庭
用燃焼器では、価格のみならず結露し易い環境下での使
用を考慮すると、第１電位差検出手段２３の入力抵抗は
１０ＭΩ程度に低下する場合もある。このような場合に
は、インピーダンス（Ｚ１）は１ＭΩ程度が好ましい。A household oil fan heater is used as a combustor,
A DC power supply (24 V) is used as the voltage applying means 11, a stainless wire (diameter 2 mm) is used as the first electrode means 19, the first potential detecting means 20 and the second potential detecting means 21, and (0.1 -10) Impedance (Z 1 ) of first load means 22 and potential difference (V 1 ) between first potential detection means 20 and second potential detection means 21 when normal kerosene is burned using an MΩ resistor. Relationship (Z 1 -V 1
2) are shown in FIG. Note that the first potential detecting means 20 is disposed closer to the first electrode means than the second potential detecting means 21,
Different potentials of charged particles are detected. V 1 is
The measurement was performed using an electrometer having a large input resistance as the first potential difference detecting means 23. As shown in the figure, the potential difference (V 1 ) increased linearly with the increase of the impedance (Z1). Therefore, it is excellent in terms of better to increase the impedance (Z1) is obtained a large potential difference signal (V 1). However, since the electrometer is expensive, it is not practical to use it as the first potential difference detecting means 23 in a household combustor or an industrial combustor. In particular, in the case of a household combustor, the input resistance of the first potential difference detecting means 23 may be reduced to about 10 MΩ in consideration of not only the price but also the use in an environment where dew condensation occurs easily. In such a case, the impedance (Z1) is preferably about 1 MΩ.

【００３７】図２の特定の測定に用いた燃焼器をそのま
ま用いて、正常灯油中にシリコーン油を約２００ppm
（重量濃度）添加した灯油を１１５０ｋｃａｌ／ｈで燃
焼させたときの電流（Ｉ）および第１電位検出手段２０
と第２電位検出手段２１の間の電位差（Ｖ1）の経時変
化を図３に示す。このときの第１電位差検出手段２３の
インピーダンス（Ｚ１）は１ＭΩとした。同図から明ら
かなように、２００ppmシリコーン油添加灯油を燃焼さ
せたとき、経過時間と共に電流（Ｉ）は単調に減少し
た。それと同時に、電位差（Ｖ1）も単調に減少した。
また、２００ppmシリコーン油添加灯油燃焼中における
電流（Ｉ）と電位差（Ｖ1）の関係（Ｉ−Ｖ1特性）を図
４に示す。同図の直線は測定値を直線回帰して得られた
直線である。これらのことは、電流（Ｉ）と電位差（Ｖ
1）の間に一定の相関関係、即ち、図４に示すＩ−Ｖ1特
性から明らかなように、電位差（Ｖ1）は電流（Ｉ）の
減少と共に単調に直線的に減少するという相関関係の存
在することを示す。正常灯油燃焼もシリコーン油添加灯
油燃焼も、燃焼自身は光学的にも電気的にも正常燃焼で
あることが別途確認されている。図４に示した直線の傾
きは、抵抗のディメンジョンを有することから火炎の抵
抗に対応する。この火炎抵抗が電流（Ｉ）に依らず一定
であること、すなわち、正常燃焼であることを図４は示
している。これらのことから、あらかじめ図４に示すＩ
−Ｖ1特性を求めておけば、あるときの電流（Ｉ）に応
じた電位差（Ｖ1）が、図４に示した電位差（Ｖ1）と異
なるか否かにより正常燃焼か異常燃焼かの判別ができ
る。なお、図２の特性測定後、第１電極手段１９の表面
にもバーナヘッド２の表面にも第１電位検出手段２０の
表面にも第２電位検出手段２１の表面にも酸化珪素から
成る白色付着物の形成が確認されたことから、電流
（Ｉ）の減少はシリコン酸化物の形成に起因することは
明らかである。Using the combustor used for the specific measurement of FIG. 2 as it is, about 200 ppm of silicone oil was added to normal kerosene.
(Weight concentration) Current (I) when the added kerosene is burned at 1150 kcal / h and the first potential detecting means 20
FIG. 3 shows a change with time of the potential difference (V 1 ) between the second potential detecting means 21 and the second potential detecting means 21. At this time, the impedance (Z1) of the first potential difference detecting means 23 was 1 MΩ. As is apparent from the figure, when the kerosene containing 200 ppm silicone oil was burned, the current (I) monotonously decreased with the lapse of time. At the same time, the potential difference (V 1 ) also monotonously decreased.
Also shows current and the potential difference (V 1) of the relationship (I-V 1 Characteristics) (I) in FIG. 4 in 200ppm silicone oil added in kerosene combustion. The straight line in the figure is a straight line obtained by performing a linear regression on the measured values. These facts indicate that the current (I) and the potential difference (V
Constant correlation between 1), i.e., as is clear from I-V 1 characteristic shown in FIG. 4, the potential difference (V 1) correlation that monotonically decreases linearly to with decreasing current (I) Indicates the existence of It has been separately confirmed that both normal kerosene combustion and silicone oil-added kerosene combustion are normal combustion optically and electrically. The slope of the straight line shown in FIG. 4 corresponds to the flame resistance because it has a resistance dimension. FIG. 4 shows that the flame resistance is constant irrespective of the current (I), that is, normal combustion. From these facts, the I shown in FIG.
If seeking -V 1 characteristic, the potential difference corresponding to the current (I) of a certain time (V 1) is shown in FIG. 4 the potential difference (V 1) different from or not the normal combustion or abnormal combustion of the or Can be determined. After the measurement of the characteristics shown in FIG. 2, the surface of the first electrode means 19, the surface of the burner head 2, the surface of the first potential detecting means 20 and the surface of the second potential detecting means 21 are made of white silicon oxide. The formation of the deposit is confirmed, and it is clear that the decrease in the current (I) is caused by the formation of silicon oxide.

【００３８】（実施例２）図５は、本発明の実施例２の
構成を示す断面図である。バーナヘッド２がステンレス
などの耐熱性導電材料で構成されている場合、それ自身
がイオンや電子などの荷電粒子を集める電極として作用
できる。しかし、バーナヘッド２がセラミックなどの耐
熱性絶縁材料で構成されている場合、バーナヘッド２は
電極として作用しない。このような場合、図５に示すよ
うに、第２電極手段２４を火炎７により生成した荷電粒
子と接触する位置に配置することが望ましい。第２電極
手段２４が、イオンや電子などの荷電粒子を集める電極
として作用するからである。より好ましくは、第２電極
手段２４をバーナヘッド２の近傍に配置することが望ま
れる。バーナヘッド２には、複数の炎孔６が設けられて
いるので、この配置により、第２電極手段２４は、１個
の火炎７あるいは複数の火炎７に確実に接触できる。火
炎７には、多くの荷電粒子が存在するので、それらの第
２電極手段への入射が容易になる。従って、バーナヘッ
ド２が導電材料で構成されている場合と同等の電位差を
検出できる。なお、第２電極手段２４は、燃料ガスや燃
焼ガスの流通に支障の無い範囲で多孔性であること、例
えば、金網状などが好ましいことは明らかである。(Embodiment 2) FIG. 5 is a sectional view showing the structure of Embodiment 2 of the present invention. When the burner head 2 is made of a heat-resistant conductive material such as stainless steel, the burner head 2 itself can function as an electrode for collecting charged particles such as ions and electrons. However, when the burner head 2 is made of a heat-resistant insulating material such as ceramic, the burner head 2 does not function as an electrode. In such a case, as shown in FIG. 5, it is desirable to arrange the second electrode means 24 at a position where it comes into contact with charged particles generated by the flame 7. This is because the second electrode means 24 functions as an electrode for collecting charged particles such as ions and electrons. More preferably, it is desirable to dispose the second electrode means 24 near the burner head 2. Since the burner head 2 is provided with a plurality of flame holes 6, this arrangement allows the second electrode means 24 to reliably contact one flame 7 or a plurality of flames 7. Since many charged particles are present in the flame 7, their incidence on the second electrode means is facilitated. Therefore, a potential difference equivalent to that when the burner head 2 is made of a conductive material can be detected. It is apparent that the second electrode means 24 is porous as long as it does not hinder the flow of the fuel gas or the combustion gas, for example, is preferably a wire mesh.

【００３９】（実施例３）図６は、本発明の実施例３の
構成を示す断面図である。本構成は、燃料を燃焼させる
バーナヘッド２と、火炎７により生成した荷電粒子と接
触する第１電極手段１９と、バーナヘッド２と第１電極
手段１９の間に電圧を印加する電圧印加手段１１と、バ
ーナヘッド２と第１電極手段１９の間に流れる電流を検
出する電流検出手段１２と、前記荷電粒子の電位を検出
する第１電位検出手段２０と、第１電位検出手段２０と
バーナヘッド２の間を一定のインピーダンスで電気的に
接続する第２負荷手段２５と、前記第２負荷手段の両端
の電位差を検出する第２電位差検出手段２６を備えたも
のである。(Embodiment 3) FIG. 6 is a sectional view showing the structure of Embodiment 3 of the present invention. This configuration includes a burner head 2 for burning fuel, first electrode means 19 for contacting charged particles generated by the flame 7, and voltage applying means 11 for applying a voltage between the burner head 2 and the first electrode means 19. A current detecting means 12 for detecting a current flowing between the burner head 2 and the first electrode means 19; a first potential detecting means 20 for detecting a potential of the charged particles; a first potential detecting means 20; 2 is provided with a second load means 25 for electrically connecting the two with a constant impedance, and a second potential difference detecting means 26 for detecting a potential difference between both ends of the second load means.

【００４０】本構成では、バーナヘッド２の電位と第１
電位検出手段２０の電位の間の電位差（Ｖ2）を第２負
荷手段を介して検出している。この電位差（Ｖ2）は、
バーナヘッド２にシリコン酸化物が付着したとき、その
シリコン酸化物部での大きな電位降下も含まれる。従っ
て、この電位差（Ｖ2）を検出することによりバーナヘ
ッド２へのシリコン酸化物付着を検出できる。In this configuration, the potential of the burner head 2 and the first
The potential difference (V 2 ) between the potentials of the potential detection means 20 is detected via the second load means. This potential difference (V 2 )
When silicon oxide adheres to the burner head 2, a large potential drop in the silicon oxide portion is included. Accordingly, by detecting this potential difference (V 2 ), the adhesion of silicon oxide to the burner head 2 can be detected.

【００４１】正常灯油中にシリコーン油を約２００ppm
（重量濃度）添加した灯油を燃焼させたときの電流
（Ｉ）および第２電位検出手段２１とバーナヘッド２の
間の電位差（Ｖ2）の経時変化を図７に示す。このとき
の第２電位差検出手段２１のインピーダンス（Ｚ２）は
１０ＭΩとした。同図から明らかなように、２００ppm
シリコーン油添加灯油を燃焼させたとき、経過時間と共
に電流（Ｉ）は単調に減少した。それに対して、電位差
（Ｖ2）は、経過時間と共にほぼ単調に増加した後、飽
和する傾向を示した。この傾向は、図３と逆であった。
また、２００ppmシリコーン油添加灯油燃焼中における
電流（Ｉ）と電位差（Ｖ2）の関係（Ｉ−Ｖ2特性）を図
８に示す。同図も図４に示した傾向と逆の傾向を示し
た。こよのように電流（Ｉ）の減少と共に電位差
（Ｖ2）が増加したことは、第１電位検出手段２０とバ
ーナヘッド２の間の火炎抵抗が増大したことを示す。前
述したように、この電位差（Ｖ2）は、バーナヘッド２
にシリコン酸化物が付着したとき、そのシリコン酸化物
部での大きな電位降下も含まれる。従って、電位差（Ｖ
2）は経過時間と共に増加したと考えられる。このこと
は、電位差（Ｖ2）がバーナヘッド２の表面へのシリコ
ン酸化物の付着量に対応していることを示す。About 200 ppm of silicone oil in normal kerosene
FIG. 7 shows the change over time of the current (I) and the potential difference (V 2 ) between the second potential detecting means 21 and the burner head 2 when the added kerosene is burned (by weight). At this time, the impedance (Z2) of the second potential difference detecting means 21 was set to 10 MΩ. As is clear from FIG.
When the kerosene with silicone oil was burned, the current (I) monotonously decreased with the lapse of time. On the other hand, the potential difference (V 2 ) increased almost monotonously with the lapse of time and then tended to saturate. This tendency was reversed from FIG.
The relationship between the current (I) and potential (V 2) at 200ppm silicone oil added in kerosene burning the (I-V 2 characteristic) shown in FIG. 8. This figure also shows a tendency opposite to the tendency shown in FIG. The increase in the potential difference (V 2 ) with the decrease in the current (I) indicates that the flame resistance between the first potential detection means 20 and the burner head 2 has increased. As described above, this potential difference (V 2 )
When silicon oxide adheres to the substrate, a large potential drop in the silicon oxide portion is included. Therefore, the potential difference (V
2 ) is considered to have increased with elapsed time. This indicates that the potential difference (V 2 ) corresponds to the amount of silicon oxide deposited on the surface of the burner head 2.

【００４２】（実施例４）図９は、本発明の実施例４の
構成を示す断面図である。本構成は、燃料を燃焼させる
バーナヘッド２と、火炎７により生成した荷電粒子と接
触する第１電極手段１９および第２電極手段２４と、第
２電極手段２４と第１電極手段１９の間に電圧を印加す
る電圧印加手段１１と、第１電極手段１９と第２電極手
段２４の間に流れる電流を検出する電流検出手段１２
と、前記荷電粒子の電位を検出する第１電位検出手段２
０と、第１電位検出手段２０と第２電極手段２４の間を
一定のインピーダンスで電気的に接続する第２負荷手段
２５と、第２負荷手段２５の両端の電位差を検出する第
２電位差検出手段２６を備えたものである。(Embodiment 4) FIG. 9 is a sectional view showing the configuration of Embodiment 4 of the present invention. This configuration includes a burner head 2 that burns fuel, first electrode means 19 and second electrode means 24 that come into contact with charged particles generated by the flame 7, and between the second electrode means 24 and the first electrode means 19. Voltage applying means 11 for applying a voltage, and current detecting means 12 for detecting a current flowing between the first electrode means 19 and the second electrode means 24
And first potential detecting means 2 for detecting the potential of the charged particles
0, a second load means 25 for electrically connecting the first potential detection means 20 and the second electrode means 24 with a constant impedance, and a second potential difference detection for detecting a potential difference between both ends of the second load means 25. Means 26 are provided.

【００４３】本構成では、バーナヘッド２が絶縁性であ
っても、荷電粒子と接触する第２電極手段２４が設けら
れているので、第２電極手段２４にシリコン酸化物が付
着したとき、そのシリコン酸化物部での大きな電位降下
は、第１電位差検出手段２０と第２電極手段２４の間の
電位差（Ｖ２）に含まれ、第２負荷手段２５を介して検
出される。この電位差（Ｖ2）を検出することにより第
２電極手段２４へのシリコン酸化物付着を検出できる。
なお、このときにバーナヘッド２へもシリコン酸化物が
付着することは、明らかである。In this configuration, even if the burner head 2 is insulative, the second electrode means 24 is provided so as to be in contact with the charged particles. The large potential drop in the silicon oxide portion is included in the potential difference (V2) between the first potential difference detecting means 20 and the second electrode means 24, and is detected via the second load means 25. By detecting this potential difference (V 2 ), the adhesion of silicon oxide to the second electrode means 24 can be detected.
At this time, it is apparent that the silicon oxide also adheres to the burner head 2.

【００４４】（実施例５）図１０は、本発明の実施例５
の構成を示す断面図である。本構成は、燃料を燃焼させ
るバーナヘッド２と、火炎７により生成した荷電粒子と
接触する第１電極手段１９と、バーナヘッド２と第１電
極手段１９の間に電圧を印加する電圧印加手段１１と、
バーナヘッド２と第１電極手段１９の間に流れる電流を
検出する電流検出手段１２と、前記荷電粒子の電位を検
出する第１電位検出手段２０と、第１電位検出手段２０
と第１電極手段１９の間を一定のインピーダンスで電気
的に接続する第３負荷手段２７と、第３負荷手段２７の
両端の電位差を検出する第３電位差検出手段２８を備え
たものである。(Embodiment 5) FIG. 10 shows Embodiment 5 of the present invention.
It is sectional drawing which shows a structure of. This configuration includes a burner head 2 for burning fuel, first electrode means 19 for contacting charged particles generated by the flame 7, and voltage applying means 11 for applying a voltage between the burner head 2 and the first electrode means 19. When,
Current detecting means 12 for detecting a current flowing between the burner head 2 and the first electrode means 19; first potential detecting means 20 for detecting the potential of the charged particles;
A third load means 27 for electrically connecting the first electrode means 19 and the first electrode means 19 with a constant impedance, and a third potential difference detecting means 28 for detecting a potential difference between both ends of the third load means 27.

【００４５】本構成では、第１電極手段１９と第１電位
検出手段２０の間の電位差（Ｖ3）を第３負荷手段２７
を介して検出している。以下で示すように、第１電極手
段１９表面へのシリコン酸化物付着により電流が大きく
減少したとき、この電位差（Ｖ3）は僅かに減少するだ
けである。従って、電流と電位差（Ｖ3）の相互関係を
監視することにより第１電極手段１９へのシリコン酸化
物付着を検出できる。In this configuration, the potential difference (V 3 ) between the first electrode means 19 and the first potential detecting means 20 is determined by the third load means 27.
Has been detected via. As shown below, when the current greatly decreases due to the adhesion of silicon oxide to the surface of the first electrode means 19, this potential difference (V 3 ) only slightly decreases. Therefore, by monitoring the correlation between the current and the potential difference (V 3 ), the adhesion of silicon oxide to the first electrode means 19 can be detected.

【００４６】正常灯油中にシリコーン油を約２００ppm
（重量濃度）添加した灯油を燃焼させたときの電流
（Ｉ）および第１電位検出手段２０とバーナヘッド２の
間の電位差（Ｖ3）の経時変化を図１１に示す。このと
きの第３電位差検出手段２８のインピーダンス（Ｚ３）
は１０ＭΩとした。同図から明らかなように、２００pp
mシリコーン油添加灯油を燃焼させたとき、経過時間と
共に電流（Ｉ）は単調に減少した。他方、電位差
（Ｖ3）は僅かに減少した後、飽和する傾向を示した。
この傾向は、図７の傾向と逆で、表面的には図３の傾向
と同じであった。シリコン酸化物が第１電極手段１９の
表面に形成されているにも拘わらず電位差（Ｖ３）が電
流（Ｉ）と共に減少したことは、次に示す見掛けの火炎
抵抗（Ｒ３）を考慮すると実施例３の結果と合理的に一
致する。見掛けの火炎抵抗（Ｒ３）は、第１電極手段１
９と第１電位検出手段２０の間の見掛けの火炎抵抗で、
ある経過時間での電位差（Ｖ3）を電流（Ｉ）で除した
値として定義される。２００ppmシリコーン油添加灯油
燃焼中における電流（Ｉ）と電位差（Ｖ3）の関係（Ｉ
−Ｖ3特性）および電流（Ｉ）と見掛けの火炎抵抗（Ｒ
３）の関係（Ｉ−Ｒ３特性）を図１２に示す。電位差
（Ｖ3）は、電流（Ｉ）の減少と共に緩やかに減少し
た。第１電極手段１９表面へのシリコン酸化物付着によ
り、電流（Ｉ）が大きく減少したにも拘わらず、電位差
（Ｖ3）が僅かしか減少しないことは、シリコン酸化物
付着を示している。他方、見掛けの火炎抵抗（Ｒ３）
は、電流（Ｉ）の減少と共に単調に、また、急速に増加
した。この点から、シリコン酸化物形成の検出には、見
掛けの火炎抵抗（Ｒ３）を用いたほうが好ましい。About 200 ppm of silicone oil in normal kerosene
FIG. 11 shows changes over time of the current (I) and the potential difference (V 3 ) between the first potential detecting means 20 and the burner head 2 when the added kerosene is burned (by weight). At this time, the impedance (Z3) of the third potential difference detecting means 28
Was set to 10 MΩ. As is clear from the figure, 200pp
When the m-silicone oil-containing kerosene was burned, the current (I) monotonously decreased with the lapse of time. On the other hand, the potential difference (V 3 ) showed a tendency to saturate after slightly decreasing.
This tendency was opposite to the tendency in FIG. 7 and was superficially the same as the tendency in FIG. The fact that the potential difference (V3) decreased with the current (I) despite the fact that the silicon oxide was formed on the surface of the first electrode means 19 indicates that the following apparent flame resistance (R3) was taken into consideration in the embodiment. Reasonably consistent with the result of 3. The apparent flame resistance (R3) is determined by the first electrode means 1
9 and an apparent flame resistance between the first potential detecting means 20 and
It is defined as a value obtained by dividing the potential difference (V 3 ) at a certain elapsed time by the current (I). Relationship between current (I) and potential difference (V 3 ) during burning of kerosene with 200 ppm silicone oil (I
-V 3 properties) and flame resistance apparent with current (I) (R
FIG. 12 shows the relationship (I-R3 characteristic) of 3). The potential difference (V 3 ) gradually decreased as the current (I) decreased. A small decrease in the potential difference (V 3 ) despite a large decrease in the current (I) due to the deposition of silicon oxide on the surface of the first electrode means 19 indicates silicon oxide deposition. On the other hand, apparent flame resistance (R3)
Increased monotonically and rapidly with decreasing current (I). From this point, it is preferable to use the apparent flame resistance (R3) for detecting the formation of silicon oxide.

【００４７】実施例３においても、第１電位検出手段２
０とバーナヘッド２の間の見掛けの火炎抵抗（Ｒ２）
は、ある経過時間での電位差（Ｖ2）を電流（Ｉ）で除
した値として定義される。図８には明示していないが、
この見掛けの火炎抵抗（Ｒ２）は、電流（Ｉ）の減少と
共に単調に、また、急速に増加することは明らかであ
る。このように、実施例３でも実施例５でも見掛けの火
炎抵抗は、電流（Ｉ）の減少と共に増加するという点で
一致している。他方、実施例３においては、図７に示す
ように、シリコン酸化物がバーナヘッド２の表面に形成
されるに従って急速に電位差（Ｖ２）は増加した。しか
し、実施例５においては、図１１に示すように、シリコ
ン酸化物が第１電極手段１９の表面に形成されたとき、
電位差（Ｖ3）はやや減少して安定した。このように電
位差の挙動と見掛けの火炎抵抗の挙動は、電流（Ｉ）の
減少に対して異なる挙動を示した。この詳細な理由は、
不明であるが、シリコン酸化物の形成の有無に拘わら
ず、電流（Ｉ）を支配している過程がバーナヘッド２表
面へのイオンの入射過程にあるとすれば、第１電極手段
１９とバーナヘッド２の間の電位差（Ｖ2）がまず最初
に決められる。他方、第１電極手段１９とバーナヘッド
２の間の電位差は一定（２４Ｖ）であるので、電位差
（Ｖ2）が決められれば、自動的に電位差（Ｖ3）が決め
られる。従って、シリコン酸化物の形成と共に電位差
（Ｖ2）が大きくなれば、その分電位差（Ｖ3）が小さく
なる。しかし、見掛けの火炎抵抗は、両実施例とも表面
へのシリコン酸化物形成により増加すると考えられる。Also in the third embodiment, the first potential detecting means 2
Apparent flame resistance (R2) between 0 and burner head 2
Is defined as a value obtained by dividing the potential difference (V 2 ) at a certain elapsed time by the current (I). Although not explicitly shown in FIG. 8,
It is clear that this apparent flame resistance (R2) increases monotonically and rapidly with decreasing current (I). As described above, the apparent flame resistance in both the third embodiment and the fifth embodiment coincides in that the apparent flame resistance increases as the current (I) decreases. On the other hand, in Example 3, as shown in FIG. 7, the potential difference (V2) rapidly increased as the silicon oxide was formed on the surface of the burner head 2. However, in the fifth embodiment, when the silicon oxide is formed on the surface of the first electrode unit 19 as shown in FIG.
The potential difference (V 3 ) decreased slightly and became stable. As described above, the behavior of the potential difference and the behavior of the apparent flame resistance showed different behaviors with respect to the decrease in the current (I). The detailed reason for this is
Although it is unknown, if the process that governs the current (I) is the process of ion incidence on the surface of the burner head 2 irrespective of whether silicon oxide is formed or not, the first electrode means 19 and the burner The potential difference (V 2 ) between the heads 2 is first determined. On the other hand, since the potential difference between the first electrode means 19 and the burner head 2 is constant (24 V), when the potential difference (V 2 ) is determined, the potential difference (V 3 ) is automatically determined. Therefore, if the potential difference (V 2 ) increases with the formation of silicon oxide, the potential difference (V 3 ) decreases accordingly. However, it is believed that the apparent flame resistance increases in both examples due to silicon oxide formation on the surface.

【００４８】（実施例６）図１３は、本発明の実施例６
の構成を示す断面図である。本構成は、燃料を燃焼させ
るバーナヘッド２と、火炎７により生成した荷電粒子と
接触する第１電極手段１９および第２電極手段２４と、
第２電極手段２４と第１電極手段１９の間に電圧を印加
する電圧印加手段１１と、第１電極手段１９と第２電極
手段２４の間に流れる電流を検出する電流検出手段１２
と、前記荷電粒子の電位を検出する第１電位検出手段２
０と、第１電位検出手段２０と第１電極手段１９の間を
一定のインピーダンスで電気的に接続する第３負荷手段
２７と、第３負荷手段２７の両端の電位差を検出する第
３電位差検出手段２８を備えた構成である。(Embodiment 6) FIG. 13 shows Embodiment 6 of the present invention.
It is sectional drawing which shows a structure of. This configuration includes a burner head 2 that burns fuel, a first electrode unit 19 and a second electrode unit 24 that come into contact with charged particles generated by the flame 7,
Voltage applying means 11 for applying a voltage between the second electrode means 24 and the first electrode means 19, and current detecting means 12 for detecting a current flowing between the first electrode means 19 and the second electrode means 24
And first potential detecting means 2 for detecting the potential of the charged particles
0, a third load means 27 for electrically connecting the first potential detection means 20 and the first electrode means 19 with a constant impedance, and a third potential difference detection for detecting a potential difference between both ends of the third load means 27. This is a configuration including means 28.

【００４９】本構成では、バーナヘッド２が絶縁性であ
っても、荷電粒子と接触する第２電極手段２４が設けら
れているので、第１電位差検出手段２０と第１電極手段
１９の間の電位差Ｖ3を検出できる。第１電極手段表面
へのシリコン酸化物付着により電流が大きく減少したと
き、この電位差（Ｖ3）は僅かに減少するだけである。
従って、電流と電位差（Ｖ3）の相互関係を監視するこ
とにより第１電極手段へのシリコン酸化物付着を検出で
きる。In this configuration, even if the burner head 2 is insulative, the second electrode means 24 that contacts the charged particles is provided, so that the voltage between the first potential difference detecting means 20 and the first electrode means 19 is provided. It can detect a potential difference V 3. This potential difference (V 3 ) only slightly decreases when the current is greatly reduced due to the deposition of silicon oxide on the surface of the first electrode means.
Therefore, by monitoring the correlation between the current and the potential difference (V 3 ), the adhesion of silicon oxide to the first electrode means can be detected.

【００５０】（実施例７）図１４は、本発明の実施例７
の構成を示す断面図である。本構成は、燃料を燃焼させ
るバーナヘッド２と、火炎７により生成した荷電粒子と
接触する第１電極手段１９と、バーナヘッド２と第１電
極手段１９の間に電圧を印加する電圧印加手段１１と、
バーナヘッド２と第１電極手段１９の間に流れる電流を
検出する電流検出手段１２と、前記荷電粒子の電位を検
出する第１電位検出手段２０および第２電位検出手段２
１とを備え、前記第１電位検出手段２０と第２電位検出
手段２１は、前記荷電粒子の異なる電位を検出し、第１
電位検出手段２０前記２０と第２電位検出手段２１の間
を一定のインピーダンスで電気的に接続する第１負荷手
段２２と、第１負荷手段２２の両端の電位差を検出する
第１電位差検出手段２３と、第２電位検出手段２１とバ
ーナヘッド２の間を一定のインピーダンスで電気的に接
続する第２負荷手段２５と、第２負荷手段２５の両端の
電位差を検出する第２電位差検出手段２６を備えたもの
である。(Embodiment 7) FIG. 14 shows Embodiment 7 of the present invention.
It is sectional drawing which shows a structure of. This configuration includes a burner head 2 for burning fuel, first electrode means 19 for contacting charged particles generated by the flame 7, and voltage applying means 11 for applying a voltage between the burner head 2 and the first electrode means 19. When,
A current detecting means 12 for detecting a current flowing between the burner head 2 and the first electrode means 19; a first potential detecting means 20 and a second potential detecting means 2 for detecting a potential of the charged particles;
1, the first potential detecting means 20 and the second potential detecting means 21 detect different potentials of the charged particles, and
A first load means 22 for electrically connecting the potential detection means 20 and the second potential detection means 21 with a constant impedance, and a first potential difference detection means 23 for detecting a potential difference between both ends of the first load means 22 A second load means 25 for electrically connecting the second potential detecting means 21 and the burner head 2 with a constant impedance; and a second potential difference detecting means 26 for detecting a potential difference between both ends of the second load means 25. It is provided.

【００５１】第１電位検出手段２０と第２電位検出手段
２１の間の電位差（Ｖ1）は、第１負荷手段２２を介し
て、第１電位差検出手段２３により検出される。この電
位差（Ｖ1）は、電流の大小にかかわらず、正常燃焼で
あれば、電流との間で一定の相関関係が保たれる。従っ
て、この電位差（Ｖ1）を検出することによりシリコン
酸化物付着の影響を受けることなく容易に着火状態や失
火状態などの燃焼状態を検知できる。また、第２電位検
出手段２１とバーナヘッド２の間の電位差（Ｖ 2）は、
第２負荷手段２５を介して、第２電位差検出手段２６に
より検出される。この電位差（Ｖ2）は、バーナヘッド
２と第２電位検出手段電位２１の間の電位差であるの
で、バーナヘッド２にシリコン酸化物が付着したとき、
そのシリコン酸化物部での大きな電位降下も含まれる。
従って、この電位差（Ｖ2）を検出することによりバー
ナヘッド２へのシリコン酸化物付着を検出できる。本構
成では、電位差（Ｖ1）と電位差（Ｖ2）の両者を同時に
検出できるので、電位差（Ｖ 1）によりシリコン酸化物
付着の影響を受けることなく燃焼状態を検知すると同時
に、他方で、電位差（Ｖ2）によりバーナヘッド２への
シリコン酸化物付着を監視することができる。First potential detecting means 20 and second potential detecting means
21 (V1) Via the first load means 22
Thus, the potential is detected by the first potential difference detecting means 23. This
Position difference (V1) Is normal combustion regardless of the magnitude of the current
If so, a constant correlation with the current is maintained. Follow
This potential difference (V1A) detecting by silicon
Easily ignites or loses without being affected by oxide adhesion
A combustion state such as a fire state can be detected. In addition, the second potential detection
Potential difference between the output means 21 and the burner head 2 (V Two)
To the second potential difference detecting means 26 via the second load means 25;
More detected. This potential difference (VTwo) Burner head
2 and the potential difference between the second potential detecting means potential 21
When silicon oxide adheres to the burner head 2,
A large potential drop in the silicon oxide portion is also included.
Therefore, this potential difference (VTwo) By detecting the bar
The attachment of silicon oxide to the head 2 can be detected. Main structure
The potential difference (V1) And the potential difference (VTwo) Both at the same time
The potential difference (V 1) By silicon oxide
Simultaneous detection of combustion state without being affected by adhesion
On the other hand, the potential difference (VTwo) To burner head 2
Silicon oxide deposition can be monitored.

【００５２】（実施例８）図１５は、本発明の実施例８
の構成を示す断面図である。本構成は、燃料を燃焼させ
るバーナヘッド２と、火炎７により生成した荷電粒子と
接触する第１電極手段１９および第２電極手段２４と、
第１電極手段１９と第２電極手段２４の間に電圧を印加
する電圧印加手段１１と、第１電極手段１９と第２電極
手段２４の間に流れる電流を検出する電流検出手段１２
と、荷電粒子の電位を検出する第１電位検出手段２０お
よび第２電位検出手段２１とを備え、前記第１電位検出
手段２０と第２電位検出手段２１は、荷電粒子の異なる
電位を検出し、第１電位検出手段２０と第２電位検出手
段２１の間を一定のインピーダンスで電気的に接続する
第１負荷手段２２と、第１負荷手段２２の両端の電位差
を検出する第１電位差検出手段２３と、第２電位検出手
段２１と第２電極手段２４の間を一定のインピーダンス
で電気的に接続する第２負荷手段２５と、第２負荷手段
２５の両端の電位差を検出する第２電位差検出手段２６
を備えたものである。(Eighth Embodiment) FIG. 15 shows an eighth embodiment of the present invention.
It is sectional drawing which shows a structure of. This configuration includes a burner head 2 that burns fuel, a first electrode unit 19 and a second electrode unit 24 that come into contact with charged particles generated by the flame 7,
Voltage applying means 11 for applying a voltage between the first electrode means 19 and the second electrode means 24, and current detecting means 12 for detecting a current flowing between the first electrode means 19 and the second electrode means 24
And a first potential detecting means 20 and a second potential detecting means 21 for detecting the potential of the charged particles. The first potential detecting means 20 and the second potential detecting means 21 detect different potentials of the charged particles. A first load means 22 for electrically connecting the first potential detection means 20 and the second potential detection means 21 with a constant impedance, and a first potential difference detection means for detecting a potential difference between both ends of the first load means 22 23, a second load means 25 for electrically connecting the second potential detection means 21 and the second electrode means 24 with a constant impedance, and a second potential difference detection for detecting a potential difference between both ends of the second load means 25. Means 26
It is provided with.

【００５３】本構成では、バーナヘッド２が絶縁性であ
っても、荷電粒子と接触する第２電極手段２４が設けら
れているので、第１電位検出手段２０と第２電位検出手
段２１の間の電位差（Ｖ1）も、第２電位検出手段２１
とバーナヘッド２の間の電位差（Ｖ2）も検出できる。
従って、本構成では、バーナヘッド２が絶縁性であって
も、電位差（Ｖ1）と電位差（Ｖ2）の両者を同時に検出
できるので、電位差（Ｖ1）によりシリコン酸化物付着
の影響を受けることなく燃焼状態を検知すると同時に、
他方で、電位差（Ｖ2）によりバーナヘッドへのシリコ
ン酸化物付着を監視することができる。In this configuration, even if the burner head 2 is insulative, the second electrode means 24 is provided so as to come into contact with the charged particles, so that the first potential detecting means 20 and the second potential detecting means 21 are provided. The potential difference (V 1 ) of the second potential detecting means 21
The potential difference (V 2 ) between the power supply and the burner head 2 can also be detected.
Therefore, in this configuration, even if the burner head 2 is insulative, both the potential difference (V 1 ) and the potential difference (V 2 ) can be detected at the same time, so that the potential difference (V 1 ) is affected by the adhesion of silicon oxide. At the same time as detecting the combustion state without
On the other hand, the potential difference (V 2 ) can monitor the deposition of silicon oxide on the burner head.

【００５４】（実施例９）図１６は、本発明の実施例９
の構成を示す断面図である。本構成は、燃料を燃焼させ
るバーナヘッド２と、火炎７により生成した荷電粒子と
接触する第１電極手段１９と、バーナヘッド２と第１電
極手段１９の間に電圧を印加する電圧印加手段１１と、
バーナヘッド２と第１電極手段１９の間に流れる電流を
検出する電流検出手段１２および第２電位検出手段２１
とを備え、前記第１電位検出手段２０と第２電位検出手
段２１は、荷電粒子の異なる電位を検出し、第１電位検
出手段２０と、バーナヘッド２に近い位置の荷電粒子の
電位を検出する第２電位検出手段２１と、第１電位検出
手段２０と第２電位検出手段２１の間を一定のインピー
ダンスで電気的に接続する第１負荷手段２２と、第１負
荷手段２２の両端の電位差を検出する第１電位差検出手
段２３と、第１電位検出手段２０と第１電極手段１９の
間を一定のインピーダンスで電気的に接続する第３負荷
手段２７と、第３負荷手段の両端の電位差を検出する第
３電位差検出手段２８を備えたものである。(Embodiment 9) FIG. 16 shows Embodiment 9 of the present invention.
It is sectional drawing which shows a structure of. This configuration includes a burner head 2 for burning fuel, first electrode means 19 for contacting charged particles generated by the flame 7, and voltage applying means 11 for applying a voltage between the burner head 2 and the first electrode means 19. When,
Current detecting means 12 and second potential detecting means 21 for detecting a current flowing between burner head 2 and first electrode means 19
Wherein the first potential detecting means 20 and the second potential detecting means 21 detect different potentials of the charged particles, and detect the first potential detecting means 20 and the potential of the charged particles at a position near the burner head 2. A second potential detecting means 21, a first load means 22 for electrically connecting the first potential detecting means 20 and the second potential detecting means 21 with a constant impedance, and a potential difference between both ends of the first load means 22. Potential difference detecting means 23 for detecting the potential difference, a third load means 27 for electrically connecting the first potential means 20 and the first electrode means 19 with a constant impedance, and a potential difference between both ends of the third load means. Is provided with a third potential difference detecting means 28 for detecting the potential difference.

【００５５】本構成では、電位差（Ｖ1）と電位差
（Ｖ3）の両者を同時に検出できるので、電位差（Ｖ1）
によりシリコン酸化物付着の影響を受けることなく燃焼
状態を検知すると同時に、他方で、電流と電位差
（Ｖ3）の相互関係を監視することにより第１電極手段
へのシリコン酸化物付着を検出できる。In this configuration, since both the potential difference (V 1 ) and the potential difference (V 3 ) can be detected simultaneously, the potential difference (V 1 )
Thus, the combustion state can be detected without being affected by the deposition of silicon oxide, and on the other hand, the deposition of silicon oxide on the first electrode means can be detected by monitoring the correlation between the current and the potential difference (V 3 ).

【００５６】（実施例１０）図１７は、本発明の実施例
１０の構成を示す断面図である。本構成は、燃料を燃焼
させるバーナヘッド２と、火炎７により生成した荷電粒
子と接触する第１電極手段１９および第２電極手段２４
と、第１電極手段１９と第２電極手段２４の間に電圧を
印加する電圧印加手段１１と、第１電極手段１９と第２
電極手段２４の間に流れる電流を検出する電流検出手段
１２と、前記荷電粒子の電位を検出する第１電位検出手
段２０および第２電位検出手段２１とを備え、前記第１
電位検出手段２０と第２電位検出手段２１は、荷電粒子
の異なる電位を検出し、第１電位検出手段２０と第２電
位検出手段２１の間を一定のインピーダンスで電気的に
接続する第１負荷手段２２と、第１負荷手段２２の両端
の電位差を検出する第１電位差検出手段２３と、第１電
位検出手段２０と第１電極手段１９間を一定のインピー
ダンスで電気的に接続する第３負荷手段２７と、第３負
荷手段２７の両端の電位差を検出する第３電位差検出手
段２８を備えたものである。(Embodiment 10) FIG. 17 is a sectional view showing a configuration of Embodiment 10 of the present invention. This configuration includes a burner head 2 that burns fuel, and first electrode means 19 and second electrode means 24 that come into contact with charged particles generated by the flame 7.
A voltage applying means 11 for applying a voltage between the first electrode means 19 and the second electrode means 24;
A first potential detecting means for detecting a current flowing between the electrode means and a first potential detecting means for detecting a potential of the charged particles;
The first load detecting means 20 and the second potential detecting means 21 detect different potentials of the charged particles and electrically connect the first potential detecting means 20 and the second potential detecting means 21 with a certain impedance. Means 22, a first potential difference detecting means 23 for detecting a potential difference between both ends of the first load means 22, and a third load for electrically connecting the first potential detecting means 20 and the first electrode means 19 with a constant impedance. Means 27 and third potential difference detecting means 28 for detecting a potential difference between both ends of the third load means 27.

【００５７】本構成では、バーナヘッド２が絶縁性であ
っても、荷電粒子と接触する第２電極手段２４が設けら
れているので、第１電位検出手段２０と第２電位検出手
段２１の間の電位差（Ｖ1）も、第１電極手段１９と第
１電位検出手段２０の間の電位差（Ｖ3）も検出でき
る。従って、本構成では、バーナヘッド２が絶縁性であ
っても、電位差（Ｖ1）と電位差（Ｖ3）の両者を同時に
検出できるので、電位差（Ｖ1）によりシリコン酸化物
付着の影響を受けることなく燃焼状態を検知すると同時
に、他方で、電流と電位差（Ｖ3）の相互関係を監視す
ることにより第１電極手段へのシリコン酸化物付着を検
出できる。In this configuration, even if the burner head 2 is insulative, the second electrode means 24 that contacts the charged particles is provided, so that the first potential detecting means 20 and the second potential detecting means 21 are provided. the potential difference (V 1) is also the potential difference between the first electrode means 19 first potential detection means 20 (V 3) is also detectable. Therefore, in this configuration, even if the burner head 2 is insulative, both the potential difference (V 1 ) and the potential difference (V 3 ) can be detected at the same time, so that the potential difference (V 1 ) is affected by the adhesion of silicon oxide. At the same time, the state of combustion can be detected without detecting the state of combustion, and on the other hand, by monitoring the correlation between the current and the potential difference (V 3 ), the deposition of silicon oxide on the first electrode means can be detected.

【００５８】なお、第１電極手段１９、第２電極手段２
４、第１電位検出手段２０や第２電位検出手段２１の形
状は、図中では線状もしくは棒状で示したが、例えば、
必要に応じてＵ字型、Ｌ字型など湾曲していてもよいこ
とも明らかである。The first electrode means 19 and the second electrode means 2
4. Although the shapes of the first potential detecting means 20 and the second potential detecting means 21 are shown as linear or rod-like in the drawing, for example,
It is also clear that it may be curved, such as U-shaped or L-shaped, as required.

【００５９】また、燃焼は、燃料タンクから補給される
液体燃料を用いた燃焼について述べてきたが、気体燃料
を用いた燃焼でもよいことも明らかである。Although the combustion using liquid fuel supplied from the fuel tank has been described, it is clear that combustion using gaseous fuel may be used.

【００６０】[0060]

【発明の効果】以上のように本発明の燃焼装置によれば
次の効果が得られる。As described above, according to the combustion apparatus of the present invention, the following effects can be obtained.

【００６１】（１）第１電極手段表面やバーナヘッド表
面へのシリコン酸化物付着の有無にかかわらず、すなわ
ち、電流の大小にかかわらず、第１電位検出手段と第２
電位手段の間の荷電粒子の電位差Ｖ1は正常燃焼であれ
ば、電流との間で一定の相関関係が保たれる。本発明で
は、従来のように電流を用いるのではなくて、この相関
関係を用いている。すなわち、第１電位検出手段と第２
電位検出手段の間の電位差Ｖ1を第１負荷手段を介して
検出できるので、シリコン酸化物付着の影響を受けるこ
となく、また、検出回路部の絶縁劣化に対しても安定的
に、着火や失火など燃焼状態を検知できる。(1) Regardless of the presence or absence of silicon oxide on the surface of the first electrode means and the surface of the burner head, that is, regardless of the magnitude of the current, the first potential detecting means and the second potential detecting means
If the potential difference V 1 was normal combustion of the charged particles between the potential means, certain correlation between the current is maintained. In the present invention, this correlation is used instead of using a current as in the related art. That is, the first potential detection means and the second potential detection means
Since a potential difference V 1 of the between potential detection means can be detected through the first load means, without being affected by the silicon oxide deposition, also stably against deterioration of insulation detection circuit section, ignition Ya A combustion state such as misfire can be detected.

【００６２】（２）また、バーナヘッドは、多くの場合
ステンレスなどの高耐熱性導電材料で構成されるが、セ
ラミックなどの高耐熱性絶縁材料で構成される場合もあ
る。バーナヘッドが導電性材料で構成される場合、バー
ナヘッドは電極としても作用できる。しかし、バーナヘ
ッドが絶縁性材料で構成される場合、バーナヘッドは電
極として作用しない。このような場合、火炎により生成
した荷電粒子と接触する第２電極手段を設けることによ
り、前述した相関関係を用いることができる。(2) The burner head is often made of a high heat-resistant conductive material such as stainless steel, but may be made of a high heat-resistant insulating material such as ceramic. If the burner head is made of a conductive material, the burner head can also act as an electrode. However, when the burner head is made of an insulating material, the burner head does not work as an electrode. In such a case, the above-described correlation can be used by providing the second electrode means that comes into contact with charged particles generated by the flame.

【００６３】（３）また、バーナヘッドの電位と第１電
位検出手段電位の間の電位差Ｖ2は、バーナヘッドと第
１電位検出手段電位の間の電位差であるので、バーナヘ
ッドにシリコン酸化物が付着したとき、そのシリコン酸
化物部での大きな電位降下も含まれる。従って、この電
位差Ｖ2を検出することによりバーナヘッドへのシリコ
ン酸化物付着を検出できる。(3) The potential difference V 2 between the potential of the burner head and the potential of the first potential detecting means is the potential difference between the potential of the burner head and the potential of the first potential detecting means. Is attached, a large potential drop in the silicon oxide portion is included. Therefore, it is possible to detect the silicon oxide adhering to the burner head by detecting the potential difference V 2.

【００６４】（４）また、バーナヘッドが絶縁性であっ
ても、荷電粒子と接触する第２電極手段が設けられてい
るので、第２電極手段にシリコン酸化物が付着したと
き、そのシリコン酸化物部での大きな電位降下は、第１
電位差検出手段と第２電極手段の間の電位差Ｖ2に含ま
れ、第２負荷手段を介して検出される。この電位差Ｖ2
を検出することにより第２電極手段へのシリコン酸化物
付着を検出できる。(4) Even if the burner head is insulative, since the second electrode means is provided for contacting the charged particles, when silicon oxide adheres to the second electrode means, the silicon oxide The large potential drop in the object part
Included in the potential difference V 2 between the potential difference detection means and the second electrode means is detected via the second load unit. This potential difference V 2
Is detected, the adhesion of silicon oxide to the second electrode means can be detected.

【００６５】（５）また、第１電極手段と第１電位検出
手段電位の間の電位差Ｖ3は、第１電極手段にシリコン
酸化物が付着したとき、そのシリコン酸化物部での大き
な電位降下も含まれる。従って、この電位差Ｖ3を検出
することにより第１電極手段へのシリコン酸化物付着を
検出できる。(5) The potential difference V 3 between the potential of the first electrode means and the potential of the first potential detecting means is such that when silicon oxide adheres to the first electrode means, a large potential drop occurs in the silicon oxide portion. Is also included. Therefore, it is possible to detect the silicon oxide adhering to the first electrode means by detecting the electric potential difference V 3.

【００６６】（６）また、バーナヘッドが絶縁性であっ
ても、荷電粒子と接触する第２電極手段が設けられてい
るので、第１電極手段にシリコン酸化物が付着したと
き、そのシリコン酸化物部での大きな電位降下は、第１
電位差検出手段と第１電極手段の間の電位差Ｖ3に含ま
れ、第３負荷手段を介して検出される。この電位差Ｖ3
を検出することにより第１電極手段へのシリコン酸化物
付着を検出できる。(6) Even if the burner head is insulative, since the second electrode means for contacting the charged particles is provided, when the silicon oxide adheres to the first electrode means, the silicon oxide The large potential drop in the object part
It included in the potential difference V 3 between the potential difference detection means and the first electrode means and is detected through the third load means. This potential difference V 3
Is detected, the adhesion of silicon oxide to the first electrode means can be detected.

【００６７】（７）また、第１電位検出手段と第２電位
検出手段の間の電位差Ｖ1と第２電位検出手段とバーナ
ヘッドの間電位差Ｖ2の両者を同時に検出できるので、
電位差Ｖ1によりシリコン酸化物付着の影響を受けるこ
となく燃焼状態を検知すると同時に、他方で、電位差Ｖ
2によりバーナヘッドへのシリコン酸化物付着を監視す
ることができる。(7) Further, since both the potential difference V 1 between the first potential detecting means and the second potential detecting means and the potential difference V 2 between the second potential detecting means and the burner head can be simultaneously detected,
At the same time, the combustion state is detected without being affected by silicon oxide deposition by the potential difference V 1 , while the potential difference V 1
2 allows the monitoring of silicon oxide deposition on the burner head.

【００６８】（８）また、バーナヘッドが絶縁性であっ
ても、荷電粒子と接触する第２電極手段が設けられてい
るので、第１電位検出手段と第２電位検出手段の間の電
位差Ｖ1も、第２電位検出手段とバーナヘッドの間の電
位差Ｖ2も検出できる。従って、バーナヘッドが絶縁性
であっても、電位差Ｖ1と電位差Ｖ2の両者を同時に検出
できるので、電位差Ｖ1によりシリコン酸化物付着の影
響を受けることなく燃焼状態を検知すると同時に、他方
で、電位差Ｖ2によりバーナヘッドへのシリコン酸化物
付着を監視することができる。(8) Even if the burner head is insulative, since the second electrode means for contacting the charged particles is provided, the potential difference V between the first potential detecting means and the second potential detecting means is provided. 1 can also be a potential difference V 2 is also detected between the second potential detection means and the burner head. Therefore, even in the burner head is insulative, since both the potential difference V 1 and the potential difference V 2 can be detected simultaneously, at the same time detects the no combustion condition that the potential difference V 1 affected by the silicon oxide deposition, on the other hand , due to the potential difference V 2 can be monitored silicon oxide adhering to the burner head.

【００６９】（９）また、電位差Ｖ1と電位差Ｖ3の両者
を同時に検出できるので、電位差Ｖ 1によりシリコン酸
化物付着の影響を受けることなく燃焼状態を検知すると
同時に、他方で、電位差Ｖ3により第１電極手段へのシ
リコン酸化物付着を監視することができる。(9) The potential difference V1And the potential difference VThreeBoth
At the same time, the potential difference V 1By silicon acid
If the combustion state is detected without being affected by
At the same time, on the other hand, the potential difference VThreeTo the first electrode means.
Recon oxide deposition can be monitored.

【００７０】（１０）また、バーナヘッドが絶縁性であ
っても、荷電粒子と接触する第２電極手段が設けられて
いるので、第１電位検出手段と第２電位検出手段の間の
電位差Ｖ1も、第１電極手段と第１電位検出手段の間の
電位差Ｖ3も検出できる。従って、バーナヘッドが絶縁
性であっても、電位差Ｖ1と電位差Ｖ3の両者を同時に検
出できるので、電位差Ｖ1によりシリコン酸化物付着の
影響を受けることなく燃焼状態を検知すると同時に、他
方で、電位差Ｖ3によりバーナヘッドへのシリコン酸化
物付着を監視することができる。(10) Even if the burner head is insulative, since the second electrode means for contacting the charged particles is provided, the potential difference V between the first potential detecting means and the second potential detecting means is provided. 1 also, the potential difference V 3 between the first electrode means and the first potential detection means can be detected. Therefore, even in the burner head is insulative, since both the potential difference V 1 and the potential difference V 3 can be detected simultaneously, at the same time detects the no combustion condition that the potential difference V 1 affected by the silicon oxide deposition, on the other hand , due to the potential difference V 3 can monitor the silicon oxide adhering to the burner head.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施例１の燃焼装置の要部断面図FIG. 1 is a sectional view of a main part of a combustion apparatus according to a first embodiment of the present invention.

【図２】正常灯油燃焼中における実施例１の特性図FIG. 2 is a characteristic diagram of Example 1 during normal kerosene combustion.

【図３】シリコーン油を添加した灯油燃焼火炎中におけ
る実施例１の特性図FIG. 3 is a characteristic diagram of Example 1 in a kerosene combustion flame to which silicone oil was added.

【図４】シリコーン油を添加した灯油燃焼火炎中におけ
る実施例１の他の特性図FIG. 4 is another characteristic diagram of Example 1 in a kerosene combustion flame to which silicone oil was added.

【図５】本発明の実施例２の燃焼装置の要部断面図FIG. 5 is a sectional view of a main part of a combustion apparatus according to a second embodiment of the present invention.

【図６】本発明の実施例３の燃焼装置の要部断面図FIG. 6 is a sectional view of a main part of a combustion apparatus according to a third embodiment of the present invention.

【図７】シリコーン油を添加した灯油燃焼火炎中におけ
る実施例３の特性図FIG. 7 is a characteristic diagram of Example 3 in a kerosene combustion flame to which silicone oil was added.

【図８】シリコーン油を添加した灯油燃焼火炎中におけ
る実施例３の他の特性図FIG. 8 is another characteristic diagram of Example 3 in a kerosene combustion flame to which silicone oil was added.

【図９】本発明の実施例４の燃焼装置の要部断面図FIG. 9 is a sectional view of a main part of a combustion apparatus according to a fourth embodiment of the present invention.

【図１０】本発明の実施例５の燃焼装置の要部断面図FIG. 10 is a sectional view of a main part of a combustion apparatus according to a fifth embodiment of the present invention.

【図１１】シリコーン油を添加した灯油燃焼火炎中にお
ける実施例５の特性図FIG. 11 is a characteristic diagram of Example 5 in a kerosene combustion flame to which silicone oil was added.

【図１２】シリコーン油を添加した灯油燃焼火炎中にお
ける実施例５の他の特性図FIG. 12 is another characteristic diagram of Example 5 in a kerosene combustion flame to which silicone oil was added.

【図１３】本発明の実施例６の燃焼装置の要部断面図FIG. 13 is a sectional view of a main part of a combustion apparatus according to a sixth embodiment of the present invention.

【図１４】本発明の実施例７の燃焼装置の要部断面図FIG. 14 is a sectional view of a main part of a combustion apparatus according to a seventh embodiment of the present invention.

【図１５】本発明の実施例８の燃焼装置の要部断面図FIG. 15 is a sectional view of a main part of a combustion apparatus according to an eighth embodiment of the present invention.

【図１６】本発明の実施例９の燃焼装置の要部断面図FIG. 16 is a sectional view of a main part of a combustion apparatus according to a ninth embodiment of the present invention.

【図１７】本発明の実施例１０の燃焼装置の要部断面図FIG. 17 is a sectional view of a main part of a combustion apparatus according to a tenth embodiment of the present invention.

【図１８】従来の燃焼装置の全体構成を示す断面図FIG. 18 is a cross-sectional view showing the entire configuration of a conventional combustion device.

【図１９】（ａ）従来の燃焼装置の要部構成図 （ｂ）従来の燃焼装置の他の要部構成図19A is a configuration diagram of a main part of a conventional combustion device. FIG. 19B is a configuration diagram of another main portion of a conventional combustion device.

【符号の説明】[Explanation of symbols]

２ バーナヘッド ７ 火炎 １１ 電圧印加手段 １２ 電流検出手段 １９ 第１電極手段 ２０ 第１電位検出手段 ２１ 第２電位検出手段 ２２ 第１負荷手段 ２３ 第１電位差検出手段 ２４ 第２電極手段 ２５ 第２負荷手段 ２６ 第２電位差検出手段 ２７ 第３負荷手段 ２８ 第３電位差検出手段 2 Burner head 7 Flame 11 Voltage applying means 12 Current detecting means 19 First electrode means 20 First potential detecting means 21 Second potential detecting means 22 First loading means 23 First potential difference detecting means 24 Second electrode means 25 Second load Means 26 Second potential difference detecting means 27 Third load means 28 Third potential difference detecting means

フロントページの続き (72)発明者 鶴田 邦弘 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 荻野 俊郎 大阪府門真市大字門真1006番地 松下電器 産業株式会社内Continuing on the front page (72) Inventor Kunihiro Tsuruta 1006 Kadoma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd.

Claims (10)

【特許請求の範囲】[Claims] 【請求項１】燃料を燃焼させるバーナヘッドと、火炎に
より生成した荷電粒子と接触する第１電極手段と、前記
バーナヘッドと前記第１電極手段の間に電圧を印加する
電圧印加手段と、前記バーナヘッドと前記第１電極手段
の間に流れる電流を検出する電流検出手段と、前記荷電
粒子の電位を検出する第１電位検出手および第２電位検
出手段を備え、前記第１電位検出手段と第２電位検出手
段は前記荷電粒子の異なる電位を検出し、前記第１電位
検出手段と前記第２電位検出手段間を一定のインピーダ
ンスで電気的に接続する第１負荷手段と、前記第１負荷
手段の両端の電位差を検出する第１電位差検出手段を備
えた燃焼装置。A burner head for burning fuel; first electrode means for contacting charged particles generated by a flame; voltage applying means for applying a voltage between said burner head and said first electrode means; Current detection means for detecting a current flowing between the burner head and the first electrode means, a first potential detection means for detecting the potential of the charged particles and a second potential detection means, wherein the first potential detection means A second potential detecting means for detecting different potentials of the charged particles, a first load means for electrically connecting the first potential detecting means and the second potential detecting means with a constant impedance; A combustion device comprising first potential difference detecting means for detecting a potential difference between both ends of the means. 【請求項２】燃料を燃焼させるバーナヘッドと、火炎に
より生成した荷電粒子と接触する第１電極手段および第
２電極手段と、前記第１電極手段と前記第２電極手段の
間に電圧を印加する電圧印加手段と、前記第１電極手段
と前記第２電極手段の間に流れる電流を検出する電流検
出手段と、前記荷電粒子の電位を検出する第１電位検出
手段および第２電位検出手段とを備え、前記第１電位検
出手段と第２電位検出手段は前記荷電粒子の異なる電位
を検出し、前記第１電位検出手段と前記第２電位検出手
段間を一定のインピーダンスで電気的に接続する第１負
荷手段と、前記第１負荷手段の両端の電位差を検出する
第１電位差検出手段を備えた燃焼装置。2. A burner head for burning fuel, a first electrode means and a second electrode means in contact with charged particles generated by a flame, and applying a voltage between said first electrode means and said second electrode means. Voltage applying means, current detecting means for detecting a current flowing between the first electrode means and the second electrode means, first potential detecting means and second potential detecting means for detecting a potential of the charged particles. Wherein the first potential detecting means and the second potential detecting means detect different potentials of the charged particles, and electrically connect the first potential detecting means and the second potential detecting means with a constant impedance. A combustion apparatus comprising: first load means; and first potential difference detecting means for detecting a potential difference between both ends of the first load means. 【請求項３】燃料を燃焼させるバーナヘッドと、火炎に
より生成した荷電粒子と接触する第１電極手段と、前記
バーナヘッドと前記第１電極手段の間に電圧を印加する
電圧印加手段と、前記バーナヘッドと前記第１電極手段
の間に流れる電流を検出する電流検出手段と、前記荷電
粒子の電位を検出する第１電位検出手段と、前記第１電
位検出手段と前記バーナヘッド間を一定のインピーダン
スで電気的に接続する第２負荷手段と、前記第２負荷手
段の両端の電位差を検出する第２電位差検出手段を備え
た燃焼装置。3. A burner head for burning fuel, first electrode means for contacting charged particles generated by a flame, voltage applying means for applying a voltage between said burner head and said first electrode means, Current detecting means for detecting a current flowing between the burner head and the first electrode means; first potential detecting means for detecting the potential of the charged particles; and a constant distance between the first potential detecting means and the burner head. A combustion apparatus comprising: a second load unit that is electrically connected by impedance; and a second potential difference detection unit that detects a potential difference between both ends of the second load unit. 【請求項４】燃料を燃焼させるバーナヘッドと、火炎に
より生成した荷電粒子と接触する第１電極手段および第
２電極手段と、前記バーナヘッドと前記第１電極手段の
間に電圧を印加する電圧印加手段と、前記第１電極手段
と前記第２電極手段の間に流れる電流を検出する電流検
出手段と、前記荷電粒子の電位を検出する第１電位検出
手段と、前記第１電位検出手段と前記第２電極手段間を
一定のインピーダンスで電気的に接続する第２負荷手段
と、前記第２負荷手段の両端の電位差を検出する第２電
位差検出手段を備えた燃焼装置。4. A burner head for burning fuel, first and second electrode means for contacting charged particles generated by a flame, and a voltage for applying a voltage between said burner head and said first electrode means. Applying means, current detecting means for detecting a current flowing between the first electrode means and the second electrode means, first potential detecting means for detecting the potential of the charged particles, and first potential detecting means; A combustion apparatus comprising: second load means for electrically connecting the second electrode means with a constant impedance; and second potential difference detecting means for detecting a potential difference between both ends of the second load means. 【請求項５】燃料を燃焼させるバーナヘッドと、火炎に
より生成した荷電粒子と接触する第１電極手段と、前記
バーナヘッドと前記第１電極手段の間に電圧を印加する
電圧印加手段と、前記バーナヘッドと前記第１電極手段
の間に流れる電流を検出する電流検出手段と、前記荷電
粒子の電位を検出する第１電位検出手段と、前記第１電
位検出手段と前記第１電極手段間を一定のインピーダン
スで電気的に接続する第３負荷手段と、前記第３負荷手
段の両端の電位差を検出する第３電位差検出手段を備え
た燃焼装置。5. A burner head for burning fuel, first electrode means for contacting charged particles generated by a flame, voltage applying means for applying a voltage between said burner head and said first electrode means, A current detecting means for detecting a current flowing between the burner head and the first electrode means; a first potential detecting means for detecting a potential of the charged particles; and a circuit between the first potential detecting means and the first electrode means. A combustion apparatus comprising: third load means electrically connected with a constant impedance; and third potential difference detecting means for detecting a potential difference between both ends of the third load means. 【請求項６】燃料を燃焼させるバーナヘッドと、火炎に
より生成した荷電粒子と接触する第１電極手段および第
２電極手段と、前記バーナヘッドと前記第１電極手段の
間に電圧を印加する電圧印加手段と、前記第１電極手段
と前記第２電極手段の間に流れる電流を検出する電流検
出手段と、前記荷電粒子の電位を検出する第１電位検出
手段と、前記第１電位検出手段と前記第１電極手段間を
一定のインピーダンスで電気的に接続する第３負荷手段
と、前記第３負荷手段の両端の電位差を検出する第３電
位差検出手段を備えた燃焼装置。6. A burner head for burning fuel, first electrode means and second electrode means for contacting charged particles generated by a flame, and a voltage for applying a voltage between said burner head and said first electrode means. Applying means, current detecting means for detecting a current flowing between the first electrode means and the second electrode means, first potential detecting means for detecting the potential of the charged particles, and first potential detecting means; A combustion apparatus comprising: third load means for electrically connecting the first electrode means with a constant impedance; and third potential difference detecting means for detecting a potential difference between both ends of the third load means. 【請求項７】燃料を燃焼させるバーナヘッドと、火炎に
より生成した荷電粒子と接触する第１電極手段と、前記
バーナヘッドと前記第１電極手段の間に電圧を印加する
電圧印加手段と、前記バーナヘッドと前記第１電極手段
の間に流れる電流を検出する電流検出手段と、前記荷電
粒子の電位を検出する第１電位検出手段および第２電位
検出手段を備え、前記第１電位検出手段と第２電位検出
手段は前記荷電粒子の異なる電位を検出し、前記第１電
位検出手段と前記第２電位検出手段間を一定のインピー
ダンスで電気的に接続する第１負荷手段と、前記第１負
荷手段の両端の電位差を検出する第１電位差検出手段
と、前記第２電位検出手段と前記バーナヘッド間を一定
のインピーダンスで電気的に接続する第２負荷手段と、
前記第２負荷手段の両端の電位差を検出する第２電位差
検出手段を備えた燃焼装置。7. A burner head for burning fuel, first electrode means for contacting charged particles generated by a flame, voltage applying means for applying a voltage between said burner head and said first electrode means, A current detecting means for detecting a current flowing between the burner head and the first electrode means; a first potential detecting means and a second potential detecting means for detecting a potential of the charged particles; A second potential detecting means for detecting different potentials of the charged particles, a first load means for electrically connecting the first potential detecting means and the second potential detecting means with a constant impedance; First potential difference detecting means for detecting a potential difference between both ends of the means, second load means for electrically connecting the second potential detecting means and the burner head with a constant impedance,
A combustion device comprising a second potential difference detecting means for detecting a potential difference between both ends of the second load means. 【請求項８】燃料を燃焼させるバーナヘッドと、火炎に
より生成した荷電粒子と接触する第１電極手段および第
２電極手段と、前記第１電極手段と前記第２電極手段の
間に電圧を印加する電圧印加手段と、前記第１電極手段
と前記第２電極手段の間に流れる電流を検出する電流検
出手段と、前記荷電粒子の電位を検出する第１電位検出
手段および第２電位検出手段を備え、前記第１電位検出
手段と第２電位検出手段は前記荷電粒子の異なる電位を
検出し、前記第１電位検出手段と前記第２電位検出手段
間を一定のインピーダンスで電気的に接続する第１負荷
手段と、前記第１負荷手段の両端の電位差を検出する第
１電位差検出手段と、前記第２電位検出手段と前記第２
電極手段間を一定のインピーダンスで電気的に接続する
第２負荷手段と、前記第２負荷手段の両端の電位差を検
出する第２電位差検出手段を備えた燃焼装置。8. A burner head for burning fuel, first electrode means and second electrode means for contacting charged particles generated by a flame, and applying a voltage between said first electrode means and said second electrode means. Voltage applying means, current detecting means for detecting a current flowing between the first electrode means and the second electrode means, first potential detecting means and second potential detecting means for detecting the potential of the charged particles. The first potential detecting means and the second potential detecting means detect different potentials of the charged particles, and electrically connect the first potential detecting means and the second potential detecting means with a constant impedance. A first load means; a first potential difference detecting means for detecting a potential difference between both ends of the first load means; a second potential detecting means;
A combustion apparatus comprising: second load means for electrically connecting electrode means with a constant impedance; and second potential difference detecting means for detecting a potential difference between both ends of the second load means. 【請求項９】燃料を燃焼させるバーナヘッドと、火炎に
より生成した荷電粒子と接触する第１電極手段と、前記
バーナヘッドと前記第１電極手段の間に電圧を印加する
電圧印加手段と、前記バーナヘッドと前記第１電極手段
の間に流れる電流を検出する電流検出手段と、前記荷電
粒子の電位を検出する第１電位検出手段および第２電位
検出手段を備え、前記第１電位検出手段と第２電位検出
手段は前記荷電粒子の異なる電位を検出し、前記第１電
位検出手段と前記第２電位検出手段間を一定のインピー
ダンスで電気的に接続する第１負荷手段と、前記第１負
荷手段の両端の電位差を検出する第１電位差検出手段
と、前記第１電位検出手段と前記第１電極手段間を一定
のインピーダンスで電気的に接続する第３負荷手段と、
前記第３負荷手段の両端の電位差を検出する第３電位差
検出手段を備えた燃焼装置。9. A burner head for burning fuel, first electrode means for contacting charged particles generated by a flame, voltage applying means for applying a voltage between said burner head and said first electrode means, A current detecting means for detecting a current flowing between the burner head and the first electrode means; a first potential detecting means and a second potential detecting means for detecting a potential of the charged particles; A second potential detecting means for detecting different potentials of the charged particles, a first load means for electrically connecting the first potential detecting means and the second potential detecting means with a constant impedance; First potential difference detecting means for detecting a potential difference between both ends of the means, third load means for electrically connecting the first potential detecting means and the first electrode means with a constant impedance,
A combustion device comprising third potential difference detecting means for detecting a potential difference between both ends of the third load means. 【請求項１０】燃料を燃焼させるバーナヘッドと、火炎
により生成した荷電粒子と接触する第１電極手段および
第２電極手段と、前記第１電極手段と前記第２電極手段
の間に電圧を印加する電圧印加手段と、前記第１電極手
段と前記第２電極手段の間に流れる電流を検出する電流
検出手段と、前記荷電粒子の電位を検出する第１電位検
出手段および第２電位検出手段を備え、前記第１電位検
出手段と第２電位検出手段は前記荷電粒子の異なる電位
を検出し、前記第１電位検出手段と前記第２電位検出手
段間を一定のインピーダンスで電気的に接続する第１負
荷手段と、前記第１負荷手段の両端の電位差を検出する
第１電位差検出手段と、前記第１電位検出手段と前記第
１電極手段間を一定のインピーダンスで電気的に接続す
る第３負荷手段と、前記第３負荷手段の両端の電位差を
検出する第３電位差検出手段を備えた燃焼装置。10. A burner head for burning fuel, first and second electrode means for contacting charged particles generated by a flame, and applying a voltage between said first and second electrode means. Voltage applying means, current detecting means for detecting a current flowing between the first electrode means and the second electrode means, first potential detecting means and second potential detecting means for detecting the potential of the charged particles. The first potential detecting means and the second potential detecting means detect different potentials of the charged particles, and electrically connect the first potential detecting means and the second potential detecting means with a constant impedance. A first load means, a first potential difference detecting means for detecting a potential difference between both ends of the first load means, and a third load for electrically connecting the first potential detecting means and the first electrode means with a constant impedance. Means Combustion system comprising a third potential difference detection means for detecting a potential difference across said third load means.
JP32255396A 1996-12-03 1996-12-03 Combustor Pending JPH10169975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32255396A JPH10169975A (en) 1996-12-03 1996-12-03 Combustor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32255396A JPH10169975A (en) 1996-12-03 1996-12-03 Combustor

Publications (1)

Publication Number Publication Date
JPH10169975A true JPH10169975A (en) 1998-06-26

Family

ID=18144968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32255396A Pending JPH10169975A (en) 1996-12-03 1996-12-03 Combustor

Country Status (1)

Country Link
JP (1) JPH10169975A (en)

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