JPS5832293B2 - Combustor safety device - Google Patents
Combustor safety deviceInfo
- Publication number
- JPS5832293B2 JPS5832293B2 JP3906378A JP3906378A JPS5832293B2 JP S5832293 B2 JPS5832293 B2 JP S5832293B2 JP 3906378 A JP3906378 A JP 3906378A JP 3906378 A JP3906378 A JP 3906378A JP S5832293 B2 JPS5832293 B2 JP S5832293B2
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- oxygen concentration
- combustion flame
- sides
- combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 23
- 229910052760 oxygen Inorganic materials 0.000 claims description 23
- 239000001301 oxygen Substances 0.000 claims description 23
- 238000002485 combustion reaction Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 4
- 239000007784 solid electrolyte Substances 0.000 claims description 4
- 229910002076 stabilized zirconia Inorganic materials 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
- F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Control Of Combustion (AREA)
Description
【発明の詳細な説明】
本発明はガス機器や石油機器等の燃焼器の安全装置に関
し、特に機器の設置雰囲気中の酸素濃度が低下した時に
一酸化炭素等が多量発生するのを防止することを目的と
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety device for combustors such as gas appliances and petroleum appliances, and in particular to prevent a large amount of carbon monoxide from being generated when the oxygen concentration in the atmosphere in which the appliance is installed is reduced. With the goal.
この種燃焼器の安全装置で、特に安定化ジルコニア等の
固体電解質材料にて戒るセンサーを利用したものでは、
センサーが主に試験管のような形状を成しその外部周囲
を燃焼ガスにて加熱すると共にその内部には空気を供給
する構成を採っている。Safety devices for this type of combustor, especially those using sensors made of solid electrolyte materials such as stabilized zirconia,
The sensor is mainly shaped like a test tube, and its outer periphery is heated with combustion gas, while air is supplied to the inside.
従って、バーナ等の点火初期にはセンサーの温度上昇か
遅く、センサーの起電力を燃料供給路に設けられた安全
弁に直接供給する場合、前記安全弁を開状態に維持する
迄にはかなりの時間が必要であった。Therefore, at the beginning of ignition of a burner, etc., the temperature of the sensor rises slowly, and when the electromotive force of the sensor is directly supplied to the safety valve installed in the fuel supply path, it takes a considerable amount of time to maintain the safety valve in the open state. It was necessary.
又センサーを試験管状に成形する場合比較的コスト高で
あった。Furthermore, when the sensor is molded into a test tube shape, the cost is relatively high.
本発明は上述の点に鑑み為されたもので、以下本発明の
実施例を図面に基き説明する。The present invention has been made in view of the above points, and embodiments of the present invention will be described below with reference to the drawings.
先ず第１図において１はセラミックプレート等から成る
炎孔部２を有した所謂全−次空気式ガスバーナで、その
炎孔部２に混合管４を連設し、混合管４の端部にはガス
ノズル５に対設する吸入孔３を有している。First of all, in FIG. 1, 1 is a so-called all-air gas burner having a flame hole 2 made of a ceramic plate or the like, and a mixing tube 4 is connected to the flame hole 2. It has a suction hole 3 arranged opposite to a gas nozzle 5.
６は安定化ジルコニア等の固体電解質材料を平板状に成
形して成るセンサーで、その両面には各々白金電極を設
けている。6 is a sensor formed by molding a solid electrolyte material such as stabilized zirconia into a flat plate, and platinum electrodes are provided on each side of the sensor.
９．９１は各センサー６の片面７，１３に対設したパイ
ロットバーナで、これらの炎孔１０ 、１０’にて形成
される正常燃焼時に於ける燃焼炎が、方はその高酸素濃
度部分８を、又他方は低酸素濃度部分１２をセンサー６
の面７，１３に接触し、又酸素濃度の低下に伴なう異常
燃焼時にはバーナ９の燃焼炎がリフティングを生じ、低
酸素濃度部分１２かセンサー６に接近する様に配設され
ている。9. 91 is a pilot burner installed on one side 7, 13 of each sensor 6, and the combustion flame formed in these flame holes 10, 10' during normal combustion is , and the other one connects the low oxygen concentration portion 12 to the sensor 6
The combustion flame of the burner 9 lifts during abnormal combustion due to a decrease in oxygen concentration, and the low oxygen concentration portion 12 is arranged so as to approach the sensor 6.
１８はパイロットバーナ９，９′の炎孔１０゜１０１部
を覆う有底筒状のカバーで、二次空気の供給量調節を考
慮してカバー１８の周壁に適数の通気孔１９．１９・・
・を穿設している。Reference numeral 18 denotes a bottomed cylindrical cover that covers the flame holes 10 and 101 of the pilot burners 9 and 9', and an appropriate number of ventilation holes 19, 19, and 19 are provided on the peripheral wall of the cover 18 in consideration of adjusting the supply amount of secondary air.・
・Drilled.
又、１４は前記ガスノズル５及びパイロットノズルｉ１
．ｉｉ’へ各々ガスを供給するガス通路で、ガス源に連
なる上流側に前記センサー６の電極と電極と電気的に接
続され、かつこのセンサー６から一定値以上の起電力の
供給を受けた時に通路を開状態に保つ安全弁１５を設け
ている。Further, 14 is the gas nozzle 5 and the pilot nozzle i1.
．． ii' is electrically connected to the electrodes of the sensor 6 on the upstream side connected to the gas source, and when an electromotive force of a certain value or more is supplied from the sensor 6. A safety valve 15 is provided to keep the passage open.
第２図は本発明に於けるセンサー６と安全弁１５との電
気回路図で、センサー６は直流電源と内部抵抗２０を有
しており、この内部抵抗２０はセンサー６の温度上昇に
伴なって低減する特性かある。FIG. 2 is an electrical circuit diagram of the sensor 6 and the safety valve 15 in the present invention. The sensor 6 has a DC power source and an internal resistance 20. There are properties that reduce it.
而して上記実施例に於いて、各々燃焼用空気中に含まれ
る酸素濃度が正常の場合には各バーナ９９１の燃焼に伴
なってセンサー６の一面７が高酸素濃度部分８にて、又
他面１３が低酸素濃度部分１２にて加熱され、よってセ
ンサー６の両面間の酸素分圧が異なりこの分圧比に応じ
た起電力を生じ、第１図に於ける安全弁１５を開状態に
維持せしめる。In the above embodiment, when the oxygen concentration contained in each combustion air is normal, one surface 7 of the sensor 6 is in the high oxygen concentration portion 8 or The other surface 13 is heated in the low oxygen concentration portion 12, and therefore the oxygen partial pressure between both surfaces of the sensor 6 is different, generating an electromotive force according to this partial pressure ratio, which maintains the safety valve 15 in FIG. 1 in the open state. urge
一方、燃焼器を使用している室内の酸素が減少して燃焼
用空気中の酸素濃度が低下すると、各々燃焼炎はリフテ
ィング燃焼ぎみとなり、センサー６の一面を加熱する燃
焼炎はその低酸素濃度部分１２をセンサー６に接近し、
又センサー６の他面を加熱する燃焼炎はその低酸素濃度
部分１２か更にセンサー６に接近する形となる。On the other hand, when the oxygen in the room where the combustor is used decreases and the oxygen concentration in the combustion air decreases, each combustion flame becomes close to lifting combustion, and the combustion flame that heats one side of the sensor 6 has a low oxygen concentration. bringing the portion 12 close to the sensor 6;
Furthermore, the combustion flame that heats the other surface of the sensor 6 comes closer to the sensor 6 through its low oxygen concentration portion 12 .
従ってセンサー６の両面間の酸素分圧比は減少し、よっ
てセンサー６の起電力が低下して設定値以下に下がるの
で安全弁１５が閉成して各ガスバーナへのガス供給を停
止する。Therefore, the oxygen partial pressure ratio between both sides of the sensor 6 decreases, and the electromotive force of the sensor 6 decreases to below the set value, so the safety valve 15 closes and stops the gas supply to each gas burner.
上述の如く本発明による燃焼器の安全装置は、安定化ジ
ルコニア等の固体電解質材料を板状に成形すると共に両
面に各々電極を設けたセンサーを設け、正常燃焼時には
このセンサーの一面が燃焼炎の高酸素濃度部分にて、又
他面が低酸素濃度部分にて加熱され、かつ酸素濃度が低
下した異常時には両面とも異常燃焼炎の酸素濃度差の少
い部分にて加熱され、センサーの両面間は生じる起電力
に応じて燃料供給通路に設けられた安全弁を開閉制御し
て成るもので、センサーを板状に成形したことによって
製造コストが安価と成り、又センサーの両面を燃焼炎に
て加熱することに依りセンサー自体の温度が高温となり
、よってセンサーの内部抵抗が小さくなり比較的大きな
出力を取り出すことができる。As mentioned above, the safety device for a combustor according to the present invention is formed by forming a solid electrolyte material such as stabilized zirconia into a plate shape, and is equipped with a sensor having electrodes on both sides.During normal combustion, one side of the sensor is in contact with the combustion flame. One side is heated in a high oxygen concentration area, and the other side is heated in a low oxygen concentration area, and in the event of an abnormality where the oxygen concentration has decreased, both sides are heated in a part of the abnormal combustion flame where the oxygen concentration difference is small, and the sensor is heated between both sides. The sensor is constructed by controlling the opening and closing of a safety valve installed in the fuel supply passage according to the generated electromotive force.The manufacturing cost is low because the sensor is formed into a plate shape, and both sides of the sensor are heated with combustion flame. By doing so, the temperature of the sensor itself becomes high, and the internal resistance of the sensor decreases, allowing a relatively large output to be extracted.
更に消炎時には瞬時に起電力が無くなるので、熱電対式
の様な消炎後に於ける生ガスの噴出が防止できる。Furthermore, since the electromotive force disappears instantaneously when the flame is extinguished, it is possible to prevent raw gas from blowing out after the flame is extinguished, as is the case with thermocouple systems.
又、上記燃焼炎が二次空気供給量調節用の通気孔を有す
る有底カバーにて覆われているので、センサーに対して
燃焼炎の接触する部分の調整が容易に行える等多大なる
効果を発揮する。In addition, since the combustion flame is covered with a bottomed cover that has ventilation holes for adjusting the amount of secondary air supply, it has great effects such as making it easy to adjust the part of the combustion flame that comes into contact with the sensor. Demonstrate.
第１図は本発明一実施例の燃焼器の安全装置の機構説明
図、第２図は同じく電気回路図、第３図は同じく特性図
である。
６・・・・・・センサー、８・・・・・・高酸素濃度部
分、１２・・・・・・低酸素濃度部分、１５・・・・・
・安全弁、１８・・・・・・カバー １９・・・・・・
通気−ＴＬ。FIG. 1 is a mechanical explanatory diagram of a safety device for a combustor according to an embodiment of the present invention, FIG. 2 is an electric circuit diagram, and FIG. 3 is a characteristic diagram. 6...Sensor, 8...High oxygen concentration part, 12...Low oxygen concentration part, 15...
・Safety valve, 18...Cover 19...
Ventilation-TL.
Claims (1)
すると共に両面に各々電極を形成して成るセンサーを設
け、正常燃焼時にはこのセンサーの一面を燃焼炎の高酸
素濃度部分にて加燃すると共に他面を低酸素濃度部分に
て加燃し、酸素濃度が低下した異常時にはセンサーの両
面とも異常燃焼炎の酸素濃度差の少い部分にて加熱せし
め、このセンサーの両面間に生じる起電力に応じて燃料
供給通路に設けられた安全弁を開閉制御して成り、上記
燃焼炎を二次空気供給量調節用の通気孔を有する有底カ
バーにて覆ったことを特徴とする燃焼器の安全装置。1. A sensor is provided by forming a solid electrolyte material such as stabilized zirconia into a plate shape and forming electrodes on both sides. During normal combustion, one side of this sensor is ignited in the high oxygen concentration part of the combustion flame. The other side is ignited in the low oxygen concentration area, and in the event of an abnormality where the oxygen concentration has decreased, both sides of the sensor are heated in the area where the difference in oxygen concentration is small in the abnormal combustion flame, and the electromotive force generated between the two sides of the sensor is A safety device for a combustor, characterized in that the combustion flame is covered by a bottomed cover having a vent hole for adjusting the amount of secondary air supply. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3906378A JPS5832293B2 (en) | 1978-03-30 | 1978-03-30 | Combustor safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3906378A JPS5832293B2 (en) | 1978-03-30 | 1978-03-30 | Combustor safety device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54129533A JPS54129533A (en) | 1979-10-08 |
| JPS5832293B2 true JPS5832293B2 (en) | 1983-07-12 |
Family
ID=12542664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3906378A Expired JPS5832293B2 (en) | 1978-03-30 | 1978-03-30 | Combustor safety device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5832293B2 (en) |
-
1978
- 1978-03-30 JP JP3906378A patent/JPS5832293B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54129533A (en) | 1979-10-08 |
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