JPS603544A - Combustion sensor - Google Patents
Combustion sensorInfo
- Publication number
- JPS603544A JPS603544A JP11122883A JP11122883A JPS603544A JP S603544 A JPS603544 A JP S603544A JP 11122883 A JP11122883 A JP 11122883A JP 11122883 A JP11122883 A JP 11122883A JP S603544 A JPS603544 A JP S603544A
- Authority
- JP
- Japan
- Prior art keywords
- heat transfer
- transfer rod
- rod
- agent
- flame
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
-
- 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
- F23N5/14—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermo-sensitive resistors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ガス、石油等を燃焼させる各種燃焼装置の燃
焼炎の有無を感知する、燃焼センサに係るものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a combustion sensor that detects the presence or absence of combustion flame in various combustion devices that burn gas, oil, etc.
従来例の構成とその問題点
従来、立消安全装置の燃焼炎感知センサーには一般的に
、第１図に示すエージニック効果を利用２べ〜−ｒノ
したサーモエレメント１が使用されている。サーモエレ
メント１は、炎感知部１ａの最高温度が約７ｏｏ′Ｃ以
下で使用しないと、高温酸化の為腐食し実用上の使用に
耐えないという欠点がある。つまシ、７００℃以下でし
か使用できなかった。Conventional Structure and Problems Conventionally, a thermoelement 1 which utilizes the engineering effect shown in FIG. 1 has been generally used as a combustion flame detection sensor for a fire safety device. The thermo-element 1 has the disadvantage that unless it is used when the maximum temperature of the flame sensing portion 1a is about 7oo'C or lower, it will corrode due to high-temperature oxidation and cannot withstand practical use. However, it could only be used at temperatures below 700°C.
また、コスト的にも第１図に示す如く、多くの部品から
成シ、加工的にもロー付等多くの工数を必要である為、
コスト高となっていた。In addition, in terms of cost, as shown in Figure 1, it requires many parts to be assembled and many man-hours such as brazing and machining.
The cost was high.
発明の目的
本発明は、上記従来の問題点を解消するもので最高使用
温度を１０００℃近傍迄使用可能とし、かつ部品構成点
数も少なくして、加工工数も少なく安価な燃焼センサを
提供するとともに、失火時の熱応答性を高めることを目
的とする。Purpose of the Invention The present invention solves the above-mentioned conventional problems, and provides an inexpensive combustion sensor that can be used at a maximum operating temperature of around 1000°C, has a reduced number of components, and requires fewer processing steps. The purpose is to improve thermal response in the event of a misfire.
発明の構成
上記目的を達成するため本発明の燃焼センサは燃焼炎に
直接加熱され、かつ２極の内の一方の電極を形成する伝
熱棒と、前記伝熱棒の熱伝導によシ、抵抗変化する伝熱
棒固定部と、前記伝熱棒固定部に、一部を埋設された前
記伝熱棒固定部の抵３ ベーコク
抗変化を検知する。もう一つの電極棒とを備え、前記伝
熱棒あるいは、電極棒のいずれか１つの一端を固定する
とともに、冷却する構成である。Structure of the Invention In order to achieve the above object, the combustion sensor of the present invention includes a heat transfer rod that is directly heated by the combustion flame and forms one of the two electrodes, and a heat transfer rod that is heated by heat conduction of the heat transfer rod. A change in resistance of a heat transfer rod fixing part whose resistance changes and a part of the heat transfer rod fixing part partially buried in the heat transfer rod fixing part is detected. Another electrode rod is provided, and one end of either the heat transfer rod or the electrode rod is fixed and cooled.
実施例の説明
以下、本発明の一実施例について図面に基づき説明する
。第２図に於いて燃焼センサ２を示す。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The combustion sensor 2 is shown in FIG.
この燃焼センサ２は、一方の電極を形成し種火９の炎Ｆ
によシ先端を加熱される伝熱棒３と、この伝熱棒を固定
する固定剤４と、固定剤４に埋設される電極棒５とを有
する。さらに前記固定剤４はその表面を」１薬６を焼付
けている。前記伝熱棒３の他端３ａ及び伝熱棒５の他端
５ａは、それぞれリード線了、８に接続する。前記伝熱
棒５の先端５ｂは、固定剤４の中に埋設される。なお前
記固定剤４は、本実施例においては、Ａｌ２Ｏ３とＳｉ
Ｃを主成分とした、サーミスク特性を有する固定剤から
なりたつ。This combustion sensor 2 forms one electrode and the flame F of the pilot flame 9
It has a heat transfer rod 3 whose tip is heated, a fixing agent 4 for fixing the heat transfer rod, and an electrode rod 5 embedded in the fixing agent 4. Further, the fixative 4 has a drug 6 baked on its surface. The other end 3a of the heat transfer rod 3 and the other end 5a of the heat transfer rod 5 are connected to lead wires 8 and 8, respectively. The tip 5b of the heat transfer rod 5 is embedded in the fixing agent 4. In this example, the fixing agent 4 is made of Al2O3 and Si.
It consists of a fixative containing C as a main component and having thermistoric properties.
尚５の電極を埋設した理由は両電極を炎感知側に突出さ
せるとこんろバーナ等被調理物の煮こぼれが両電極間に
落ち、抵抗値が少なくなって、誤作動を起こす恐れをな
くすることが目的である。The reason for burying electrode 5 is that if both electrodes are protruded toward the flame sensing side, boiled boiled food such as stove burners will fall between the two electrodes, reducing the resistance value and eliminating the risk of malfunction. The purpose is to
前記伝熱棒３の先端を種火９の炎Ｆによシ加熱すると、
伝熱棒３は加熱され、同時に熱伝導３により、固定剤４
も加熱される。固定剤４は、サーミヌタ特性を有する為
、温度上昇とともに抵抗値が低くなる。When the tip of the heat transfer rod 3 is heated by the flame F of the pilot flame 9,
The heat transfer rod 3 is heated, and at the same time, due to heat conduction 3, the fixing agent 4
is also heated. Since the fixing agent 4 has a therminuta characteristic, its resistance value decreases as the temperature rises.
従がって、固定剤４に埋設された伝熱棒３と、電極５の
末端３２Ｌ、５ａに設けられたリード線７゜８間の抵抗
は、温度によシ変化をする。また伝熱棒３の末端３２Ｌ
と固定剤４の間に放熱フィン１゜を設け、種火Ｆの炎が
失火したとき、固定剤４の温度を伝熱棒３からの熱伝導
によシ、放熱させる事によシ、より早く、失火検知レベ
ル迄固定剤の温度を下げ抵抗値を上げる役割を果す構成
とするとともに、燃焼センサを取付ける働きを持たせる
構成としている。Therefore, the resistance between the heat transfer rod 3 embedded in the fixing agent 4 and the lead wires 7.8 provided at the ends 32L and 5a of the electrodes 5 changes depending on the temperature. Also, the end 32L of the heat transfer rod 3
A heat dissipation fin 1° is provided between the heat transfer rod 3 and the fixing agent 4, and when the flame of the pilot flame F misfires, the temperature of the fixing agent 4 is changed by heat conduction from the heat transfer rod 3, and the heat is radiated. The structure is configured to quickly lower the temperature of the fixing agent to the misfire detection level and increase the resistance value, and is also configured to have the function of attaching a combustion sensor.
第３図は上記の温度−抵抗変化曲線を示すものである。FIG. 3 shows the temperature-resistance change curve described above.
Ｙ軸に抵抗値、Ｘ軸に伝熱棒３の（先端 １炎に接触さ
せた部分）温度を示し、伝熱棒３の先端温度が、５００
℃になると抵抗値が６００にΩ５ ページ
となシ、又１０ｏｏ℃になると抵抗値が約５０にΩにな
ることを示している。The Y-axis shows the resistance value, and the X-axis shows the temperature of the heat transfer rod 3 (the tip of which is in contact with the flame).
℃, the resistance value becomes 600 Ω, and when the temperature reaches 100° C., the resistance value becomes about 50 Ω.
」二記の様に伝熱棒３の先端温度が５００℃以」二すな
わち、５００にΩ以下の抵抗値になれば、燃焼中である
という識別を行なう事により、燃焼センサとならしめる
構成である。If the temperature at the tip of the heat transfer rod 3 exceeds 500°C as described in Section 2, in other words, if the resistance value is less than 500 Ω, it is determined that combustion is in progress, thereby making it a combustion sensor. be.
発明の効果 以上のように、本発明によれば次の効果がある。Effect of the invention As described above, the present invention has the following effects.
（１）従来使用されていたザーモエレメントテハ、７０
０℃以」−では使用が出来なかったが、本発明、燃焼セ
ンサーに於いては、１０００°Ｃ近傍迄使用できる。な
ぜならば、サーモエレメントに於いては、エージニック
効果が必要な為、拐料選定に限界があり、高温耐食性の
良い材料が使用出来ない。本発明の燃焼センサの熱伝導
はサーミスク特性を有する固定剤に熱伝導を行なう目的
である事から、高温耐食性の優れた材質を容易に選択で
きること。又、固定剤も、Ａｌ２Ｏ３及びＳｉＣを主成
分とする、材料構成の点である。(1) Conventionally used thermoelement tech, 70
Although it could not be used at temperatures below 0°C, the combustion sensor of the present invention can be used up to around 1000°C. This is because thermoelements require an aesthetic effect, so there is a limit to the selection of additives, and materials with good high-temperature corrosion resistance cannot be used. Since the purpose of heat conduction in the combustion sensor of the present invention is to conduct heat to a fixing agent having thermistoric properties, a material with excellent high-temperature corrosion resistance can be easily selected. Furthermore, the fixative has a material composition mainly composed of Al2O3 and SiC.
又、炎Ｆと、固定剤との空間ｌを伝熱棒の長６ ページ
さで熱伝導させているが、空間βを可変させる事によシ
、抵抗と温度の曲線も変化させる事が出来る為、種火の
ような、少ないカロリーの場合には、空間ｌを短かくし
、炎から熱伝導を早く損失を少なく伝える効果をもたせ
る。反対に燃焼量の大きなバーナに取付ける場合には、
空間ｌを長くし、サーミヌタ特性を有する固定剤４を雰
囲温度の低い所において万一失火した場合、早く抵抗値
が高くなるよう、応答性を、考慮した使用をする等の効
果がある。In addition, although the space 1 between the flame F and the fixing agent is used to conduct heat through the length of the heat transfer rod, the curve of resistance and temperature can also be changed by varying the space β. Therefore, in the case of a low-calorie flame, such as a pilot flame, the space 1 is shortened to have the effect of quickly transmitting heat from the flame with less loss. On the other hand, when installing it on a burner with a large combustion amount,
This has the effect of making the space 1 longer and taking responsiveness into consideration so that in the event that the fixing agent 4 having therminuta characteristics misfires in a place with a low ambient temperature, the resistance value will quickly increase.
（２） 従来のサーモエレメントと比べ、部品点数、組
立工数も少ない為、安価に、提供できる。(2) Compared to conventional thermoelements, there are fewer parts and fewer assembly steps, so it can be provided at a lower price.
等の効果をもっている。It has similar effects.
（３）また伝熱棒の一端を固定する事によシ、万一失火
した場合、熱容量の大きな固定剤の温度を早く下シ、失
火検知レベルの抵抗値迄温度を下げる為に、固定剤の熱
容量を伝熱棒に伝え、伝熱棒の固定を兼ねた放電フィン
で放熱することによシ早く失火レベルに迄抵抗値が回復
するとともに、固定を兼ねている為、取付工数も減る７
ベーと
ことになる効果をもっている。(3) In addition, by fixing one end of the heat transfer rod, in the event of a misfire, the temperature of the fixative, which has a large heat capacity, can be quickly lowered to the resistance value at the misfire detection level. By transmitting the heat capacity of the heat transfer rod to the heat transfer rod and dissipating the heat with the discharge fins that also serve as fixing the heat transfer rod, the resistance value quickly recovers to the misfire level.
It has a very different effect.
第１図は従来のセンサの断面図、第２図は本発明の燃焼
センサの一実施例の一部断面構成図、第３図は同センザ
の抵抗と温度の関係を示す特性図である。
２・・・・・・燃焼センサ、３・・・・・・伝熱棒、４
・・・・・・固定剤、５・・・・・・伝熱棒、６・・・
・・・」−薬。
代理人の氏名 弁即士 中 尾 敏 男 ほか１名□ど
τFIG. 1 is a sectional view of a conventional sensor, FIG. 2 is a partially sectional configuration diagram of an embodiment of the combustion sensor of the present invention, and FIG. 3 is a characteristic diagram showing the relationship between resistance and temperature of the sensor. 2... Combustion sensor, 3... Heat transfer rod, 4
...Fixing agent, 5...Heat transfer rod, 6...
...”-Medicine. Name of agent Toshio Nakao, lawyer and 1 other person □doτ
Claims (1)
形成する伝熱棒と、前記伝熱棒の熱伝導によシ、抵抗変
化する伝熱棒固定部と、前記伝熱棒固定部に、一部を埋
設された前記伝熱棒固定部の抵抗変化を検知する、もう
一つの電極棒とを備え、前記伝熱棒あるいは電極棒のい
ずれかでつの一端を固定するとともに冷却する構成とし
た燃焼センサ。A heat transfer rod that is directly heated by a combustion flame and forms one of the two electrodes, a heat transfer rod fixing portion whose resistance changes due to heat conduction of the heat transfer rod, and the heat transfer rod. The fixing part is provided with another electrode rod that detects a change in resistance of the heat transfer rod fixing part that is partially buried, and one end of the heat transfer rod or the electrode rod is fixed and cooled. A combustion sensor configured to
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11122883A JPS603544A (en) | 1983-06-20 | 1983-06-20 | Combustion sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11122883A JPS603544A (en) | 1983-06-20 | 1983-06-20 | Combustion sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS603544A true JPS603544A (en) | 1985-01-09 |
Family
ID=14555792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11122883A Pending JPS603544A (en) | 1983-06-20 | 1983-06-20 | Combustion sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603544A (en) |
-
1983
- 1983-06-20 JP JP11122883A patent/JPS603544A/en active Pending
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