JPS6237618A - Safety device for burner - Google Patents
Safety device for burnerInfo
- Publication number
- JPS6237618A JPS6237618A JP60176223A JP17622385A JPS6237618A JP S6237618 A JPS6237618 A JP S6237618A JP 60176223 A JP60176223 A JP 60176223A JP 17622385 A JP17622385 A JP 17622385A JP S6237618 A JPS6237618 A JP S6237618A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- output
- voltage
- oxygen concentration
- comparator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 41
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 33
- 239000001301 oxygen Substances 0.000 abstract description 33
- 229910052760 oxygen Inorganic materials 0.000 abstract description 33
- 230000007423 decrease Effects 0.000 description 13
- 206010021143 Hypoxia Diseases 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002950 deficient Effects 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
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
- F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/04—Measuring pressure
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)
Abstract
Description
【発明の詳細な説明】
（り産業上の利用分野
本発明は、灯油やガス等の燃料を燃焼させて暖房等を行
なう燃焼器に関し、特に山地や高地等の気圧の低い場所
で器具を使用した場合でもその場所に応じて酸素濃度を
検出して酸素濃度が所定レベル（＃欠しベル）以下に低
下する以前に燃焼を停止させる燃焼器の安全装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a combustor that burns fuel such as kerosene or gas for heating, etc. The present invention relates to a combustor that burns fuel such as kerosene or gas for heating, etc. The present invention relates to a safety device for a combustor that detects the oxygen concentration depending on the location and stops combustion before the oxygen concentration drops below a predetermined level (#missing bell) even if the oxygen concentration occurs.
（ロ）従来の技術
従来、此種安全装置には実公昭５５−３１４０３号があ
り、炎電流値を電圧変換し、該電圧レベルによって燃焼
動作の発停制御等を行なっている。即ち、前述のものは
燃焼器の燃焼炎中を流れる炎電流値が体積酸素濃度（単
位体積当りの酸素量）に比例することを利用して炎電流
値を検出すルコトニより体積酸素濃度を検出している。(B) Prior Art Conventionally, this type of safety device is disclosed in Japanese Utility Model Publication No. 55-31403, which converts the flame current value into voltage and controls the start and stop of combustion operation based on the voltage level. In other words, the method described above detects the volumetric oxygen concentration by using the method that detects the flame current value by using the fact that the flame current value flowing through the combustion flame of the combustor is proportional to the volumetric oxygen concentration (the amount of oxygen per unit volume). are doing.
（ハ）発明が解決しようとする問題点
上述する従来のものは燃焼動作を停止する体積酸素濃度
の最低限度値を１気圧の状態で検出するよう設定してい
る。(c) Problems to be Solved by the Invention The conventional apparatus described above is set to detect the minimum volumetric oxygen concentration at which the combustion operation is stopped at 1 atmosphere.
しかし、器具を気圧の低い山地や高地で使用した場合、
体積ｔＶ素濃度は１気圧の状態と変わらないが重量酸素
濃度（単位重量当りの酸素量）が１気圧の状態よりも低
下するため、上述のように炎電流値による酸素濃度（体
積酸素濃度）の検知制御を行なって燃焼器の燃焼を停止
する時には、既に重量Ｉ！１２素濃度の低下により酸欠
を起こすといった問題点があった。However, if the device is used in mountains or highlands with low atmospheric pressure,
Although the volumetric tV elementary concentration is the same as at 1 atm, the gravimetric oxygen concentration (oxygen amount per unit weight) is lower than at 1 atm, so as mentioned above, the oxygen concentration (volume oxygen concentration) by the flame current value By the time detection control is performed to stop combustion in the combustor, the weight I! There was a problem in that oxygen deficiency occurred due to a decrease in the concentration of element 12.
（ニ）問題点を解決するための手段
このために本発明は、燃焼器と、該燃焼器の燃焼炎中に
配設した電極と、該電極と燃焼器間に流れる炎電流を電
圧に変換出力する電流−１「圧変挽回路と、器具を使用
する場所の気圧に応じた電圧を出力する気圧検知手段と
、前記変換回路の出力と気圧検知手段の出力とを比較す
る比較器と、該比較器の出力により燃焼器の燃焼運転を
制御する燃焼制御回路とから構成したものである。(d) Means for Solving the Problems To this end, the present invention provides a combustor, an electrode disposed in the combustion flame of the combustor, and a converter that converts the flame current flowing between the electrode and the combustor into a voltage. Output current-1: a voltage converter circuit, an atmospheric pressure detection means that outputs a voltage according to the atmospheric pressure of the place where the appliance is used, and a comparator that compares the output of the conversion circuit and the output of the atmospheric pressure detection means; and a combustion control circuit that controls the combustion operation of the combustor based on the output of the comparator.
（ホ）作用
本発明は上述するように炎電流値の下限設定レベルを気
圧に応じて可変することができるので、気圧の異なる場
所で器具を使用しても酸素濃度が所定レベル（酸欠危険
レベル）に低下する前に燃焼を停止させることができる
ので、室内の酸素濃度の低下による使用者の酸欠状態に
よる危険を未然に防止することができる。(E) Effect As described above, the present invention can vary the lower limit setting level of the flame current value depending on the atmospheric pressure, so even if the device is used in a place with different atmospheric pressure, the oxygen concentration will remain at the predetermined level (risk of oxygen deficiency). Since the combustion can be stopped before the oxygen concentration drops to 100%, it is possible to prevent the user from being exposed to oxygen deficiency due to a decrease in the oxygen concentration in the room.
（へ）実施例
以下、本発明の一実施例を図面に基つき説明する。（１
）はＡＣｌｏｏＶの一般商用交流電源、（２）は一端を
前記交流電源（１）に接続すると共に他端を燃焼器り３
〉の燃焼炎（４）中に配設している電極棒、（５）は前
記電極棒（２）から燃焼炎（４）を介して燃焼器（３）
に流れる炎電流を電圧に変換する電流−電圧変換回路で
、該変換回路（５）は燃焼器＜３）とアース間を接続す
る抵抗（６）と該抵抗（６）に並列接続している抵抗（
７）およびコンデンサ（８）からなる直列回路と一端を
抵抗（７）とコンデンサ（８）の接続点に接続している
抵抗（９）とから構成している。（１０）はマイナス側
入力端子（１１）を前記抵抗（９）の他端に接続してい
る酸素濃度検出回路としての比較器、（１２）はマノメ
ータやアネロイド方式等から成る気圧検知手段としての
気圧計で、該気圧計（１２）は検知する気圧に対応した
直流電圧を出力するものであり前記比較器（１０）のプ
ラス側入力端子（１３）に出力端子（１４）を接続して
いる。（１５）は前記交流電源（１）を所定の直流電圧
に変換して気圧計（１２〉の電源として供給する定電圧
回路である。(F) Example Hereinafter, an example of the present invention will be explained based on the drawings. (1
) is a general commercial AC power source for AClooV, and (2) has one end connected to the AC power source (1) and the other end connected to the combustor 3.
The electrode rod (5) disposed in the combustion flame (4) of
This is a current-voltage conversion circuit that converts the flame current flowing through the combustor into voltage, and the conversion circuit (5) is connected in parallel to the resistor (6) that connects the combustor <3) and the ground. resistance(
7) and a capacitor (8), and a resistor (9) whose one end is connected to the connection point of the resistor (7) and the capacitor (8). (10) is a comparator as an oxygen concentration detection circuit whose negative input terminal (11) is connected to the other end of the resistor (9), and (12) is an air pressure detection means such as a manometer or an aneroid system. The barometer (12) outputs a DC voltage corresponding to the detected atmospheric pressure, and has an output terminal (14) connected to the positive input terminal (13) of the comparator (10). . (15) is a constant voltage circuit that converts the AC power source (1) into a predetermined DC voltage and supplies it as a power source for the barometer (12>).
（１６）は燃焼器（３）の燃焼を制御する燃焼制御回路
で、該制御回路（１６）は燃焼器（３）に何ら異常がな
い時に運転可能信号であるハイレベルを出力する出力端
子（１７）を備えると共に前記比較器（１０）の出力信
号を入力する入力端子（１８）を備えている。(16) is a combustion control circuit that controls combustion of the combustor (3), and this control circuit (16) is an output terminal ( 17) and an input terminal (18) into which the output signal of the comparator (10) is input.
前記燃焼制御回路（１６）は入力端子（１８）にロウレ
ベル信号が入力している時には燃焼動作を行なうよう制
御するが、ハイレベル信号が入力したときには燃焼動作
を停止する様構成しているものである。（１９）は入力
端子の一端を前記比較器（１０）の出力端子（１４）に
接続すると共に他端を前記燃焼制御回路（１６）の出力
端子（１７）に接続しているＮＡＮＤ回路、（２０）は
前記定電圧回路（１５）とＮＡＮＤ回路（１９）間に抵
抗（２１）を介して接続している負荷としての表示素子
であるＬＥＤで、該Ｌ Ｅ Ｄ （２０）はＮＡＮＤ回
路（１９）の出力によって制御きれ酸素濃度の低下を使
用者に報知する。また、該負荷はブザーであっても良い
。The combustion control circuit (16) is configured to perform a combustion operation when a low level signal is input to the input terminal (18), but to stop the combustion operation when a high level signal is input. be. (19) is a NAND circuit having one end of its input terminal connected to the output terminal (14) of the comparator (10) and the other end connected to the output terminal (17) of the combustion control circuit (16); 20) is an LED which is a display element as a load connected between the constant voltage circuit (15) and the NAND circuit (19) via a resistor (21), and the LED (20) is connected to the NAND circuit (19). The output of step 19) notifies the user of the uncontrolled decrease in oxygen concentration. Further, the load may be a buzzer.
本発明は上述する構成であり、以下その動作について説
明する。The present invention has the above-mentioned configuration, and its operation will be described below.
先ず、電源を投入すると気圧計（１２）が器具を使用す
る場所の気圧（例えば１気圧）に応じた直流電圧を出力
し、該直流電圧が炎電流値の下限レベルとして比較器＜
１０）のプラス側入力端子（１３〉に印加する。この電
源投入後数１０秒間は比較器（１０〉の出力に関係なく
燃焼制御回路（１６）が働らき燃焼器（３）の燃焼が開
始して正常な燃焼炎（４）を形成するため、該燃焼炎（
４）の整流作用によって電極棒（２）から燃焼器（３）
に正常な炎電流が流れる。First, when the power is turned on, the barometer (12) outputs a DC voltage corresponding to the atmospheric pressure (for example, 1 atm) at the place where the instrument is used, and this DC voltage is set as the lower limit level of the flame current value and the comparator <
10) is applied to the positive input terminal (13>).For several tens of seconds after the power is turned on, the combustion control circuit (16) operates regardless of the output of the comparator (10>) and combustion in the combustor (3) starts. to form a normal combustion flame (4).
4) from the electrode rod (2) to the combustor (3).
Normal flame current flows through.
該炎電流は電流−電圧変換回路（５）によって所定電圧
に変換され、比較器（１０）のマイナス側入力端子（１
１）に印加する。この時、比較器（１０）は気圧計（１
２）の出力よりも炎電流による出力の方が大きいのでロ
ウレベル信号を出力し、該出力信号は燃焼制御回路（１
６）に入力される。そして前述の如く電源投入後数１０
秒が経過すると該制御回路（１６）は比較器（１０）の
ロウレベル信号に基づき燃焼を継続すると共にＮＡＮＤ
回路（１９）の一端に入力する。The flame current is converted into a predetermined voltage by the current-voltage conversion circuit (5), and the negative input terminal (1) of the comparator (10) is
1). At this time, the comparator (10) is connected to the barometer (1
Since the output from the flame current is larger than the output from 2), a low level signal is output, and this output signal is sent to the combustion control circuit (1).
6). And as mentioned above, after turning on the power, the number 10
When the second elapses, the control circuit (16) continues combustion based on the low level signal of the comparator (10), and the NAND
It is input to one end of the circuit (19).
また、ＮＡＮＤ回路（１９）の他端には燃焼制御回路（
１６）の出力するハイレベル信号が入力することにより
、該ＮＡＮＤ回路（１９）の出力はハイレベルに固定さ
れ、Ｌ Ｅ Ｄ （２０）は点灯しない。In addition, the other end of the NAND circuit (19) is connected to the combustion control circuit (
16), the output of the NAND circuit (19) is fixed at a high level, and the LED (20) does not light up.
その後、燃焼を継続する事によって室内の酸素濃度が低
下し、その濃度が例えば酸欠状態である１８．５％以下
に減少したときに流れる炎電流の変換した電圧よりも気
圧計（１２）の出力する電圧の方が高くなった時に、比
較器（１０）の出力はハイレベルに反転し、その出力信
号は燃焼制御回路（１６）に入力して燃焼器（３）の燃
焼を停止させると共にＮＡＮＤ回路（１９〉に入力する
。従って、ＮＡＮＤ回路（１９）の出力はロウレベルに
反転してＬＥＤ（２０）を点灯させて使用者に酸素濃度
の低下を報知する。After that, as the combustion continues, the oxygen concentration in the room decreases, and when the concentration decreases to, for example, 18.5% or less, which is an oxygen-deficient state, the voltage converted by the flame current that flows is higher than the voltage of the barometer (12). When the output voltage becomes higher, the output of the comparator (10) is reversed to high level, and the output signal is input to the combustion control circuit (16) to stop combustion in the combustor (3) and It is input to the NAND circuit (19). Therefore, the output of the NAND circuit (19) is inverted to low level and lights up the LED (20) to notify the user of the decrease in oxygen concentration.
次に、器具を山地や高地等の気圧の低い場所で使用した
場合について説明する。器具を例えば０．９気圧の場所
で使用した時には、先ず気圧計（１２）が０．９気圧に
対応した直流電圧を出力して比較器（１０）のプラス側
入力端子（１３）に印加する。Next, a case where the device is used in a place with low atmospheric pressure such as a mountainous area or a high altitude will be explained. For example, when the device is used in a place where the pressure is 0.9 atm, the barometer (12) first outputs a DC voltage corresponding to 0.9 atm and applies it to the positive input terminal (13) of the comparator (10). .
該気圧計（１２）の出力は気圧の低下による重量酸素濃
度の低下分補正した電圧が出力されるので、該気圧計（
１２）の出力電圧を例えば酸欠の予告あるいは燃焼を停
止させる下限レベルに設定することができる。従って、
比較器（１０）のマイナス側入力端子り１１）に入力す
る炎電流は体積酸素濃度を検知しているものであるから
１気圧の状態でも０．９気圧の状態でも変わらないが、
例えば１気圧の状態で体積酸素濃度の低下を検知する炎
電流の下限レベルを第２図中の（Ａ、）に示す１８．５
％に設定した場合、０．９気圧の状態では気圧の低下に
よる重量酸素濃度の低下があるので下限レベルを第２図
中の（Ａｌ＞に示すように例えば１９％に自動的に可変
設定することとなる。The output of the barometer (12) is a voltage corrected for the decrease in gravimetric oxygen concentration due to the decrease in atmospheric pressure.
The output voltage of step 12) can be set, for example, to a lower limit level that warns of oxygen deficiency or stops combustion. Therefore,
The flame current input to the negative input terminal 11) of the comparator (10) detects the volumetric oxygen concentration, so it does not change whether the pressure is 1 atm or 0.9 atm.
For example, the lower limit level of flame current for detecting a decrease in volumetric oxygen concentration at 1 atm is 18.5 as shown in (A,) in Figure 2.
%, the lower limit level is automatically set variably to 19%, for example, as shown in (Al> in Figure 2), since the weight oxygen concentration decreases due to the decrease in atmospheric pressure in the state of 0.9 atm. That will happen.
そして、燃焼を継続して比較器（１０）のマイナス側入
力端子（１１）に入力する炎電流（体積酸素濃度）の変
換電圧が、気圧計（１２）の出力する体積酸素濃度１９
％に対応する電圧より低下した時点で比較器（１０）の
出力がハイレベルに反転することによって燃焼制御回路
（１６）は燃焼を停止すると共にＮＡＮＤ回路（１９）
を介してＬ Ｅ Ｄ （２０）を点灯させて酸素濃度の
低下を報知するものである。Then, the converted voltage of the flame current (volume oxygen concentration) input to the negative input terminal (11) of the comparator (10) by continuing combustion is the volume oxygen concentration 19 output from the barometer (12).
%, the output of the comparator (10) is reversed to a high level, and the combustion control circuit (16) stops combustion, and the NAND circuit (19)
The LED (20) is turned on to notify the decrease in oxygen concentration.
（ト）発明の効果
本発明は上述する如くであり、炎電流によって室内の酸
素濃度を検出し燃焼器の燃焼を制御する下限レベルを、
器具を使用する場所の気圧によって気圧検知手段が自動
的に可変補正するので、安全性の高い燃焼器を提供する
ことができる。(G) Effects of the Invention The present invention is as described above, and detects the oxygen concentration in the room using flame current and sets the lower limit level for controlling combustion in the combustor.
Since the atmospheric pressure detection means automatically performs variable correction depending on the atmospheric pressure of the place where the appliance is used, a highly safe combustor can be provided.
第１図は本発明の一実施例を示す電気回路図、第２図は
気圧により異なる重量酸素濃度の減少を示す図である。
（３）・・・燃焼器、 （４）・・・燃焼炎、 （１０
）・・・比較器、 （１２）・・・気圧検知手段、 （
１６）・・・燃焼制御回路。FIG. 1 is an electric circuit diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing the decrease in the weight oxygen concentration depending on the atmospheric pressure. (3)...Combustor, (4)...Combustion flame, (10
)...Comparator, (12)...Atmospheric pressure detection means, (
16)... Combustion control circuit.
Claims (1)
、該電極と燃焼器間に流れる炎電流を電圧に変換出力す
る電流−電圧変換回路と、器具を使用する場所の気圧に
応じた電圧を出力する気圧検知手段と、前記変換回路の
出力と気圧検知手段の出力とを比較する比較器と、該比
較器の出力により燃焼器の燃焼運転を制御する燃焼制御
回路とから成ることを特徴とする燃焼器の安全装置。(1) A combustor, an electrode disposed in the combustion flame of the combustor, a current-voltage conversion circuit that converts the flame current flowing between the electrode and the combustor into voltage, and a location where the appliance is used. an atmospheric pressure detection means that outputs a voltage according to the atmospheric pressure; a comparator that compares the output of the conversion circuit with the output of the atmospheric pressure detection means; and a combustion control circuit that controls the combustion operation of the combustor based on the output of the comparator. A combustor safety device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60176223A JPS6237618A (en) | 1985-08-09 | 1985-08-09 | Safety device for burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60176223A JPS6237618A (en) | 1985-08-09 | 1985-08-09 | Safety device for burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6237618A true JPS6237618A (en) | 1987-02-18 |
Family
ID=16009778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60176223A Pending JPS6237618A (en) | 1985-08-09 | 1985-08-09 | Safety device for burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6237618A (en) |
-
1985
- 1985-08-09 JP JP60176223A patent/JPS6237618A/en active Pending
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