JPH08170824A - Safety control method of combustion instrument and device therefor - Google Patents
Safety control method of combustion instrument and device thereforInfo
- Publication number
- JPH08170824A JPH08170824A JP33288694A JP33288694A JPH08170824A JP H08170824 A JPH08170824 A JP H08170824A JP 33288694 A JP33288694 A JP 33288694A JP 33288694 A JP33288694 A JP 33288694A JP H08170824 A JPH08170824 A JP H08170824A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- abnormality
- combustion equipment
- change
- rate
- 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.)
- Granted
Links
Landscapes
- Regulation And Control Of Combustion (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、主に燃焼機器(ガス機
器等)の安全動作を図るための安全制御方法及びその装
置に係り、特に、燃焼機器の劣化に起因する異常状態に
応じて安全動作を確保できるようにした安全制御方法及
びその装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates mainly to a safety control method and apparatus for achieving safe operation of combustion equipment (gas equipment, etc.), and more particularly, in accordance with an abnormal state caused by deterioration of combustion equipment. The present invention relates to a safety control method and a device therefor capable of ensuring safe operation.
【0002】[0002]
【従来の技術】燃焼機器に動作異常が生じた場合、人命
を危険な状態に晒すおそれがあるので、従来から種々の
安全制御方法及び安全制御装置が提案されている。例え
ば、燃焼機器が劣化した状態で長期間使用を継続するこ
とは、不完全燃焼等の不測の事態を招きかねないので、
燃焼機器の劣化を示すパラメータ(例えば、ファンの回
転数や電流値等)を選択し、このパラメータを監視する
ことによって、パラメータが異常値となった際には、燃
焼機器の動作を強制的に停止させるようなことが従来か
ら行われている。2. Description of the Related Art When an abnormal operation occurs in a combustion device, human life may be exposed to a dangerous state. Therefore, various safety control methods and safety control devices have been proposed. For example, continuous use for a long period of time with deteriorated combustion equipment may cause an unexpected situation such as incomplete combustion.
By selecting a parameter that indicates deterioration of the combustion equipment (for example, fan rotation speed, current value, etc.) and monitoring this parameter, the operation of the combustion equipment is forced when the parameter becomes an abnormal value. It has been conventionally performed to stop the operation.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、上述の
ような従来の技術においては、パラメータの異常値を招
いた原因が、燃焼機器に突発的に何らかの異常が生じた
ことに起因するものであるのか、燃焼機器の経年変化の
積算の結果、異常値を示すこととなったのかを判断して
いない。したがって、本来的には異常値を招いた原因に
応じて適切な安全策が講じられるべきところ、異常値を
越えたか否かによって一律的な処理しか行っていなかっ
たので、より適切な安全制御が望まれていた。However, in the prior art as described above, is the cause of the abnormal value of the parameter caused by the sudden occurrence of some abnormality in the combustion equipment? , As a result of integrating the secular change of the combustion equipment, it is not judged whether it shows an abnormal value. Therefore, originally, appropriate safety measures should be taken according to the cause of the abnormal value, but only uniform processing was performed depending on whether or not the abnormal value was exceeded. Was wanted.
【0004】本発明は、上記実情に鑑みてなされたもの
で、燃焼機器の異常の状態に応じた動作制御を可能とす
る燃焼機器の安全制御方法及びその装置を提供するもの
である。The present invention has been made in view of the above situation, and provides a safety control method for combustion equipment and an apparatus therefor capable of performing operation control according to an abnormal state of the combustion equipment.
【0005】[0005]
【課題を解決するための手段】請求項1記載の発明に係
る燃焼機器の安全制御方法は、燃焼機器の劣化の指標と
なる所定のパラメータの時間に対する変化率を求め、そ
の大小により突発的異常の発生か経年変化による異常の
発生かを判断し、その判断結果に応じて前記燃焼機器の
動作を制御するようにしたものである。According to a first aspect of the present invention, there is provided a safety control method for a combustion device, wherein a rate of change of a predetermined parameter, which is an index of deterioration of the combustion device, with respect to time is obtained, and the magnitude of the change rate causes a sudden abnormality. Is generated or an abnormality due to secular change is determined, and the operation of the combustion device is controlled according to the determination result.
【0006】請求項2記載の発明に係る燃焼機器の安全
制御装置は、燃焼機器の劣化の指標となるパラメータと
なる所定の物理量を検出する検出手段と、前記検出手段
により検出された物理量の変化率を演算する演算手段
と、前記演算手段により算出された変化率の大小により
前記燃焼機器の異常の種類を判断する異常判断手段と、
前記異常判断手段の判断結果に応じて前記燃焼機器の動
作を制御する動作制御手段と、を具備してなるものであ
る。According to a second aspect of the present invention, there is provided a safety control device for a combustion device, a detection means for detecting a predetermined physical quantity which is a parameter serving as an index of deterioration of the combustion equipment, and a change in the physical quantity detected by the detection means. Calculating means for calculating the rate, and abnormality determining means for determining the type of abnormality of the combustion device based on the magnitude of the change rate calculated by the calculating means,
And an operation control means for controlling the operation of the combustion equipment according to the judgment result of the abnormality judgment means.
【0007】[0007]
【作用】燃焼機器の劣化の指標となるパラメータの変化
率は、燃焼機器に突発的な異常が生じた際には、経年変
化による変化率に比して非常に大きなものとなるので、
この変化率の大小により燃焼機器に突発的な異常が発生
したか、経年変化により燃焼機器に異常が生じたかが判
断でき、その判断結果に応じて燃焼機器に対して適切な
処置を施すことが可能となるものである。[Function] Since the rate of change of the parameter that is an index of deterioration of the combustion equipment is extremely large compared to the rate of change over time when a sudden abnormality occurs in the combustion equipment,
It is possible to determine whether a sudden abnormality has occurred in the combustion equipment or whether there is an abnormality in the combustion equipment due to secular change depending on the magnitude of this rate of change, and it is possible to take appropriate action on the combustion equipment according to the result of the determination It will be.
【0008】[0008]
【実施例】以下、本発明に係る燃焼機器の安全制御方法
及び燃焼機器の安全制御装置の一実施例について、図
1、図2、図3及び図4を参照しつつ説明する。ここ
で、図1は本発明に係る燃焼機器の安全制御装置の一構
成例を示す構成図、図2は図1に示された実施例におけ
る燃焼機器の安全制御装置による制御動作の手順を示す
フローチャート、図3は燃焼機器に突発的異常が生じた
際のパラメータの変化を示す特性線図、図4は燃焼機器
の経年変化によるパラメータの変化を示す特性線図であ
る。なお、以下に説明する部材、配置等は本発明を限定
するものではなく、本発明の趣旨の範囲内で種々改変す
ることができるものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a safety control method for a combustion device and a safety control device for a combustion device according to the present invention will be described below with reference to FIGS. 1, 2, 3 and 4. Here, FIG. 1 is a configuration diagram showing one configuration example of a safety control device for a combustion device according to the present invention, and FIG. 2 shows a procedure of a control operation by the safety control device for a combustion device in the embodiment shown in FIG. FIG. 3 is a flow chart, FIG. 3 is a characteristic diagram showing changes in parameters when a sudden abnormality occurs in the combustion equipment, and FIG. 4 is a characteristic diagram showing changes in parameters due to aging of the combustion equipment. The members, arrangements, and the like described below do not limit the present invention and can be variously modified within the scope of the gist of the present invention.
【0009】本実施例における燃焼機器の安全制御装置
は、図示しない燃焼機器の劣化の指標となるパラメータ
の変化を検出する検出手段としてのセンサ1と、このセ
ンサ1からの検出信号をCPU3へ入力するために必要
な信号処理を施すインターフェイス回路(図1において
は「I/F」と略記)2と、ROM、RAM等を内蔵し
てなるいわゆるワンチップ・マイコンであるCPU3
と、このCPU3からの制御信号により図示しない燃焼
機器に対して必要な動作制御を行う動作制御手段として
の動作制御回路4とを有してなるものである。The safety control device for combustion equipment according to the present embodiment inputs a sensor 1 as a detection means for detecting a change in a parameter (not shown) which is an index of deterioration of the combustion equipment, and a detection signal from the sensor 1 to the CPU 3. An interface circuit (abbreviated as “I / F” in FIG. 1) 2 for performing signal processing necessary for the operation, a CPU 3 which is a so-called one-chip microcomputer including a ROM, a RAM, and the like.
And an operation control circuit 4 as an operation control means for performing necessary operation control for a combustion device (not shown) in accordance with a control signal from the CPU 3.
【0010】かかる構成における本装置の動作につい
て、図2に示されたフローチャートを参照しつつ以下説
明する。先ず、本装置の図示されない電源スイッチが投
入されることにより、CPU3によって制御プログラム
が実行されて、センサ1からの検出信号がCPU3に入
力されることとなる(図2のステップ100)。The operation of the present apparatus having such a configuration will be described below with reference to the flow chart shown in FIG. First, when a power switch (not shown) of this device is turned on, the control program is executed by the CPU 3 and the detection signal from the sensor 1 is input to the CPU 3 (step 100 in FIG. 2).
【0011】ここで、センサ1により検出される対象
は、燃焼機器の劣化の指標となるパラメータとなるもの
で、具体的には例えば、燃焼機器に用いられているファ
ンであって一定量の風量を得るように制御されているフ
ァンの回転数や、一定回転数におけるファンの電流、さ
らには火炎温度等が好適である。Here, the object detected by the sensor 1 is a parameter serving as an index of deterioration of the combustion equipment, and specifically, for example, a fan used in the combustion equipment and having a constant air flow rate. The rotational speed of the fan controlled so as to obtain, the current of the fan at a constant rotational speed, the flame temperature, and the like are preferable.
【0012】次に、入力されたセンサ信号の時間に対す
る変化すなわち変化率の演算がCPU3により行われる
こととなる(図2のステップ102)。そして、求めら
れた変化率により燃焼機器に突発的異常が発生したか、
経年変化によるものかが判断される(図2のステップ1
04)。この変化率による燃焼機器の異常の有無の判断
は次述するような考えに基づくものである。先ず、例え
ば燃焼機器に突発的な異常が発生した場合には、図3に
示されたようにセンサ1の検出対象である燃焼機器の劣
化を示すパラメータの値は、異常発生の時刻の前後にお
いて急激な変化を示すが、経年変化による場合には図4
に示されたように徐々に高くなる傾向を示すものとな
る。Next, the change of the input sensor signal with respect to time, that is, the change rate is calculated by the CPU 3 (step 102 in FIG. 2). Then, whether a sudden abnormality has occurred in the combustion equipment due to the obtained change rate,
It is judged whether it is due to secular change (step 1 in FIG. 2).
04). The determination as to whether or not there is an abnormality in the combustion equipment based on this rate of change is based on the idea described below. First, for example, when a sudden abnormality occurs in the combustion equipment, the value of the parameter indicating the deterioration of the combustion equipment that is the detection target of the sensor 1 as shown in FIG. It shows a drastic change, but if it changes over time,
As shown in, the tendency becomes gradually higher.
【0013】したがって、単にパラメータの値が所定の
閾値を越えたか否かだけの判断では、突発的な異常によ
るものか、単に経年変化によるものなのかを判断するこ
とはできないが、変化率を求めてその大小を見ることに
よってこれらの判断が可能となる。すなわち、突発的な
異常が発生した際、パラメータの変化率は、その前後に
比して極端に大きな値となる一方、単に経年変化の蓄積
によりパラメータの値が所定の値を越える異常な状態と
なった場合における変化率は、極端に大きな値を示すよ
うなことはない。Therefore, it is not possible to judge whether it is due to a sudden abnormality or simply due to secular change by simply judging whether or not the parameter value exceeds a predetermined threshold value, but the change rate is calculated. It is possible to make these judgments by observing the size of the edge. That is, when a sudden abnormality occurs, the rate of change of the parameter becomes an extremely large value compared to before and after that, while the value of the parameter exceeds the predetermined value simply due to the accumulation of secular change. The rate of change in such a case does not show an extremely large value.
【0014】上述のような観点によりステップ104に
おける判断処理が行われ、単に経年変化によるものであ
ると判断された場合(図2において「経年変化」の場
合)には、経年変化による劣化が生じたことを例えばラ
ンプ等を点灯させたり、ブザー等を鳴動させる等により
使用者に知らせる(図2のステップ108)。一方、異
常と判断された場合(図2において「異常」の場合)に
はCPU3より動作制御回路4に対して燃焼機器の安全
を確保するために必要な制御信号が出力されて、その結
果、動作制御回路4により燃焼機器の安全対策が確保さ
れることとなる(図2のステップ106)。When the judgment processing in step 104 is performed from the above viewpoint and it is judged that it is simply due to the secular change (in the case of "age change" in FIG. 2), deterioration due to secular change occurs. The fact is notified to the user by, for example, turning on a lamp or sounding a buzzer or the like (step 108 in FIG. 2). On the other hand, when it is determined to be abnormal (in the case of “abnormal” in FIG. 2), the CPU 3 outputs the control signal necessary for ensuring the safety of the combustion equipment to the operation control circuit 4, and as a result, The operation control circuit 4 ensures the safety measures for the combustion equipment (step 106 in FIG. 2).
【0015】ここで、動作制御回路4により行われる燃
焼機器の安全対策とは、具体的には、例えば燃焼機器の
動作を強制的に停止させる、警報を発生する等の種々の
対応が考えられ、種々選択され得るものである。本実施
例においては、CPU3及びこのCPU3により実行さ
れる図2に示された制御により、演算手段及び異常判断
手段が実現されている。Here, as the safety measures for the combustion equipment performed by the operation control circuit 4, concretely, various measures such as forcibly stopping the operation of the combustion equipment and issuing an alarm can be considered. , Can be variously selected. In the present embodiment, the CPU 3 and the control shown in FIG. 2 executed by the CPU 3 realize the arithmetic means and the abnormality judging means.
【0016】上述の実施例においては、図2のステップ
104の判断処理により単に経年変化による異常と判断
された場合、その旨の表示等を行うようにしたが、この
とき同時に燃焼機器の動作能力を低下させるようし、燃
焼機器が動作限界の上限で動作することに起因する事故
防止を図るようにしてもよい。In the above-described embodiment, when it is determined that the abnormality is simply due to aging by the determination processing in step 104 of FIG. 2, a message to that effect is displayed, but at the same time, the operating capacity of the combustion equipment is also indicated. May be reduced to prevent accidents caused by the combustion equipment operating at the upper limit of the operating limit.
【0017】[0017]
【発明の効果】以上、述べたように本発明によれば、燃
焼機器に生ずる劣化の原因の違いに応じて燃焼機器の動
作の安全を確保できるように構成することにより、突発
的な異常の発生か、経年変化による異常の発生かを識別
することができるので、それぞれに応じて適切な処置を
燃焼機器に施すことができ、安全確保が確実且つ適切に
行えるという効果を奏するものである。As described above, according to the present invention, the safety of the operation of the combustion equipment can be ensured in accordance with the difference in the cause of the deterioration of the combustion equipment, so that a sudden abnormality can be prevented. Since it is possible to discriminate between the occurrence and the occurrence of an abnormality due to secular change, it is possible to perform appropriate treatment on the combustion equipment according to each, and it is possible to ensure safety and appropriately.
【図1】本発明に係る燃焼機器の安全制御装置の一実施
例を示す構成図である。FIG. 1 is a configuration diagram showing an embodiment of a safety control device for a combustion device according to the present invention.
【図2】図1に示された実施例における燃焼機器の安全
制御装置による制御動作の手順を示すフローチャートで
ある。FIG. 2 is a flowchart showing a procedure of control operation by a safety control device for a combustion device in the embodiment shown in FIG.
【図3】燃焼機器に突発的異常が生じた際のパラメータ
の変化を示す特性線図である。FIG. 3 is a characteristic diagram showing changes in parameters when a sudden abnormality occurs in a combustion device.
【図4】燃焼機器の経年変化によるパラメータの変化を
示す特性線図である。FIG. 4 is a characteristic diagram showing changes in parameters of a combustion device over time.
1…センサ 2…インターフ
ェイス回路 3…CPU 4…動作制御回
路1 ... Sensor 2 ... Interface circuit 3 ... CPU 4 ... Operation control circuit
Claims (2)
メータの時間に対する変化率を求め、その大小により突
発的異常の発生か経年変化による異常の発生かを判断
し、その判断結果に応じて前記燃焼機器の動作を制御す
ることを特徴とする燃焼機器の安全制御方法。1. A rate of change of a predetermined parameter, which is an index of deterioration of combustion equipment, with respect to time is obtained, and it is determined whether a sudden abnormality occurs or an abnormality due to secular change based on its magnitude, and according to the determination result. A safety control method for a combustion device, comprising controlling the operation of the combustion device.
となる所定の物理量を検出する検出手段と、 前記検出手段により検出された物理量の変化率を演算す
る演算手段と、 前記演算手段により算出された変化率の大小により前記
燃焼機器の異常の種類を判断する異常判断手段と、 前記異常判断手段の判断結果に応じて前記燃焼機器の動
作を制御する動作制御手段と、 を具備してなることを特徴とする燃焼機器の安全制御装
置。2. A detection unit that detects a predetermined physical quantity that is a parameter that is an index of deterioration of a combustion device, a calculation unit that calculates a change rate of the physical quantity detected by the detection unit, and a calculation unit that calculates the change rate. An abnormality determination means for determining the type of abnormality of the combustion equipment depending on the magnitude of the change rate, and an operation control means for controlling the operation of the combustion equipment according to the determination result of the abnormality determination means. Safety control device for combustion equipment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33288694A JP3375222B2 (en) | 1994-12-15 | 1994-12-15 | Combustion equipment safety control method and device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33288694A JP3375222B2 (en) | 1994-12-15 | 1994-12-15 | Combustion equipment safety control method and device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08170824A true JPH08170824A (en) | 1996-07-02 |
JP3375222B2 JP3375222B2 (en) | 2003-02-10 |
Family
ID=18259904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP33288694A Expired - Fee Related JP3375222B2 (en) | 1994-12-15 | 1994-12-15 | Combustion equipment safety control method and device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3375222B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016215311A (en) * | 2015-05-19 | 2016-12-22 | ファナック株式会社 | Abnormality detection device comprising abnormality detection function of machine tool and abnormality detection method |
US10413270B2 (en) | 2016-11-15 | 2019-09-17 | Canon Medical Systems Corporation | Medical image diagnostic apparatus |
DE102019208786A1 (en) * | 2019-06-17 | 2020-12-17 | Robert Bosch Gmbh | Method for fault detection in a fluid guidance device |
-
1994
- 1994-12-15 JP JP33288694A patent/JP3375222B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016215311A (en) * | 2015-05-19 | 2016-12-22 | ファナック株式会社 | Abnormality detection device comprising abnormality detection function of machine tool and abnormality detection method |
US10024758B2 (en) | 2015-05-19 | 2018-07-17 | Fanuc Corporation | Abnormality detecting device having function for detecting abnormality of machine tool, and abnormality detecting method |
US10413270B2 (en) | 2016-11-15 | 2019-09-17 | Canon Medical Systems Corporation | Medical image diagnostic apparatus |
DE102019208786A1 (en) * | 2019-06-17 | 2020-12-17 | Robert Bosch Gmbh | Method for fault detection in a fluid guidance device |
Also Published As
Publication number | Publication date |
---|---|
JP3375222B2 (en) | 2003-02-10 |
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