JP2973849B2 - Method for determining air volume switching in combustion device - Google Patents
Method for determining air volume switching in combustion deviceInfo
- Publication number
- JP2973849B2 JP2973849B2 JP6334992A JP33499294A JP2973849B2 JP 2973849 B2 JP2973849 B2 JP 2973849B2 JP 6334992 A JP6334992 A JP 6334992A JP 33499294 A JP33499294 A JP 33499294A JP 2973849 B2 JP2973849 B2 JP 2973849B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- air
- switching
- amount
- air volume
- 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 - Lifetime
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- Regulation And Control Of Combustion (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、燃焼量に応じて燃焼
用空気の供給量を段階的に切替調節する形式の燃焼装置
において、この切替調節が確実に行なわれたかどうかを
判定する判定方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus of the type in which the supply amount of combustion air is switched and adjusted stepwise according to the amount of combustion, and a method for determining whether or not this switching adjustment has been performed reliably. It is about.
【０００２】[0002]
【従来の技術】燃焼装置における燃焼量の調節に際して
は、複数の燃料供給流路の夫々に設けた燃料弁を選択的
に開閉して燃料の流量を段階的に調節すると共に、この
燃料流量に合わせて燃焼用空気の送風量を段階的に調節
し、燃料と燃焼用空気の比（空気比）を所定の値に維持
する形式のものがある。このような燃焼装置においての
燃焼用空気の供給量の調節は、送風ダクトに設けたダン
パの開度を変える方式や、インバータ等を利用して送風
機の回転数を制御することにより送風量を調節する方法
等によって行われており、また、安定した燃焼性能を得
るために、燃料や燃焼用の空気の供給状態を監視してい
る。2. Description of the Related Art When adjusting the amount of combustion in a combustion apparatus, a fuel valve provided in each of a plurality of fuel supply passages is selectively opened and closed to adjust the flow rate of fuel in a stepwise manner. In addition, there is a type in which the blowing amount of the combustion air is adjusted stepwise so as to maintain the ratio of fuel to combustion air (air ratio) at a predetermined value. Adjustment of the supply amount of combustion air in such a combustion device can be performed by changing the opening degree of a damper provided in a blower duct or by controlling the number of rotations of a blower using an inverter or the like. In order to obtain stable combustion performance, the supply state of fuel or combustion air is monitored.
【０００３】ところで、上述のような燃焼装置におい
て、燃焼用空気の供給量の切替の確認は、ダンパの位置
を検出したり、また、圧力センサを利用した風量検出器
によって風量の検出することによって行っている。この
ような風量を検出するための検出器としては、半導体を
用いた圧力センサが用いられる場合がある。この半導体
を用いた圧力センサは、一般に雰囲気温度の変化に対応
して信号値が変化する特性（一般に温度ドリフト特性と
称される。）を有しているため、前記のような燃焼装置
においては、装置の運転や気候の変化等により周囲温度
が上昇すると、この圧力センサに影響を与え、正確な検
出を阻害する。そのため、装置の制御や異常の判定につ
いての信頼性が低下する。In the above-described combustion apparatus, the switching of the supply amount of combustion air is confirmed by detecting the position of the damper or detecting the air volume by an air volume detector using a pressure sensor. Is going. A pressure sensor using a semiconductor may be used as a detector for detecting such an air volume. A pressure sensor using this semiconductor generally has a characteristic in which a signal value changes in accordance with a change in ambient temperature (generally referred to as a temperature drift characteristic). If the ambient temperature rises due to the operation of the apparatus, a change in climate, or the like, this affects the pressure sensor and hinders accurate detection. Therefore, the reliability of the control of the apparatus and the determination of the abnormality is reduced.
【０００４】例えば、ボイラを設置するボイラ室等にお
いては、ボイラの稼働状況により温度変化が著しい場合
があり、半導体式の安価な圧力センサでは、温度ドリフ
ト量が大きいため、圧力センサからの信号値が実際の値
とは大きくずれ、精度の悪化は一層顕著なものとなる。
従って、このような燃焼装置においては、制御や、異常
検出の精度を確保するためには、温度ドリフト特性の良
好なセンサを用いる必要があり、コストの上昇につなが
っていた。即ち、燃焼用空気の供給量の切替状態を誤っ
て判断し、供給燃料量に見合った燃焼用空気が供給され
ないまま燃焼すると、煤、一酸化炭素等の未燃物が残留
したり、燃焼音の増大、振動燃焼の発生等という問題が
発生し、また、燃料の有効利用ができないという問題が
生じる。For example, in a boiler room or the like in which a boiler is installed, the temperature change may be remarkable depending on the operating condition of the boiler. In the case of an inexpensive semiconductor type pressure sensor, the amount of temperature drift is large, so the signal value from the pressure sensor is large. However, the value greatly deviates from the actual value, and the deterioration of accuracy becomes more remarkable.
Therefore, in such a combustion apparatus, it is necessary to use a sensor having a good temperature drift characteristic in order to ensure the accuracy of control and abnormality detection, which has led to an increase in cost. That is, if the switching state of the supply amount of the combustion air is erroneously determined and the combustion is performed without supplying the combustion air corresponding to the supplied fuel amount, unburned substances such as soot and carbon monoxide remain, and the combustion noise is reduced. This causes problems such as an increase in fuel consumption, generation of vibration combustion, and a problem that fuel cannot be used effectively.
【０００５】[0005]
【発明が解決しようとする課題】上述の問題点に鑑み、
この発明は、燃焼用空気の供給量を燃焼量に応じて段階
的に切替調節する燃焼装置において、前記燃焼用空気の
供給量の切替を検知誤差に関係無く検出することのでき
る燃焼装置における風量切替判定方法を提供しようとす
るものである。In view of the above problems,
The present invention relates to a combustion device for switching and controlling a supply amount of combustion air in a stepwise manner in accordance with a combustion amount. It is intended to provide a switching determination method.
【０００６】[0006]
【課題を解決するための手段】この発明は、前記の課題
に鑑みてなされたもので、燃焼用空気の供給量を燃焼量
に応じて段階的に切替調節する燃焼装置において、燃焼
用空気の供給経路に燃焼用空気の供給状態を検出する風
量検出器を設け、燃焼用空気の供給量の切替前後におけ
る風量検出器からの検出信号値の比を所定値と比較し、
前記検出信号値の比が所定値よりも大きいときに燃焼用
空気の供給量の切替が正常に行われたと判定することを
特徴とする燃焼装置における風量切替判定方法を提供す
るものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, in the combustion apparatus stepwise switching controlled according to the supply amount of combustion air to the combustion amount of combustion air the air amount detector for detecting the state of supply of the combustion air supply path is provided, put on before and after the switching of the supply amount of combustion air
The ratio of the detection signal value from the air amount detector with a predetermined value that,
Wherein a ratio of the detection signal value is to provide the air volume switching determination method in a combustion apparatus, wherein the switching of the supply amount of combustion air to be determined to have been normally performed when greater than a predetermined value.
【０００７】[0007]
【作用】この発明によれば、燃焼装置(1) に対して、燃
焼量を増加、或は減少させるべく、燃焼量の変更の指示
が出ると、燃焼用空気はこの燃焼量に応じた量に段階的
に切替調節される。この燃焼用空気の供給量の切替前後
における風量検出器(8)からの検出信号値の比を求め
る。そして、この検出信号値の比が所定値よりも大きい
ときには、燃焼用空気の供給量の切替が正常に行われた
と判定する。According to the present invention, when the combustion device (1) is instructed to change the amount of combustion in order to increase or decrease the amount of combustion, the amount of combustion air is changed according to the amount of combustion. The switching is adjusted step by step. Before and after switching of the supply amount of combustion air
The ratio of the detection signal value from the airflow detector (8) at
You. When the ratio of the detection signal values is larger than a predetermined value, it is determined that the switching of the supply amount of the combustion air has been normally performed.
【０００８】[0008]
【実施例】以下、この発明をボイラ用の燃焼装置に適用
した具体的な一実施例について図面に基づいて説明す
る。図１はこの発明の具体的一実施例を示す概略構成図
で、図２は、この発明における判定要領の説明図であ
る。図面において、燃焼装置(1) は、ボイラ(2) の上部
に取付けられている。この燃焼装置(1) は、燃料配管
(3) と燃焼用空気の供給経路であるウインドボックス
(4) を備えている。ウインドボックス(4) には、風量検
出器(8) を取付けてあり、この出力が判定回路(9) に入
力されるように接続してある。この風量検出器(8) は、
前述したように、燃焼用空気の供給量を風圧として検出
するもので、より具体的には、ウインドボックス(4) 内
を流れる燃焼用空気の圧力を検出するものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment in which the present invention is applied to a boiler combustion apparatus will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a specific embodiment of the present invention, and FIG. 2 is an explanatory diagram of a judgment procedure in the present invention. In the drawing, a combustion device (1) is mounted on an upper part of a boiler (2). This combustion device (1)
(3) and a wind box that is a supply path for combustion air
(4) is provided. A wind volume detector (8) is attached to the wind box (4), and this output is connected so as to be input to a determination circuit (9). This air flow detector (8)
As described above, the supply amount of the combustion air is detected as a wind pressure, and more specifically, the pressure of the combustion air flowing in the wind box (4) is detected.
【０００９】この発明における燃焼装置(1) は、燃焼量
を段階的に調節する形式のもので、図示する実施例にお
いては、三位置制御方式に対応するものである。即ち、
燃焼量が、停止，低燃焼，高燃焼の三段階に調節される
ものであるから、前記燃料配管(3) は、２本の分岐配管
(3a),(3b) を備えており、各分岐配管(3a),(3b) の夫々
に燃料弁(5a),(5b) を接続した構成としてある。そし
て、各燃料弁(5a),(5b)を選択的に開閉することにより
燃料の供給量を段階的に調節している。また、ウインド
ボックス(4) には、その上流端に送風機(6) を接続して
あり、この送風機(6) からの燃焼用空気の供給量は、こ
の燃料供給量の調整に応じて段階的に調節される。尚、
燃焼用空気の供給量の調整に際しては、送風機(6) の下
流側に風量調節ダンパを設ける方法、インバータ等によ
り送風機(6) の回転数を制御する方法等によって行なわ
れる。The combustion device (1) according to the present invention is of a type in which the amount of combustion is adjusted stepwise, and in the embodiment shown in the drawing, it corresponds to a three-position control system. That is,
Since the amount of combustion is controlled in three stages: stop, low combustion, and high combustion, the fuel pipe (3) has two branch pipes.
(3a) and (3b) are provided, and fuel valves (5a) and (5b) are connected to each of the branch pipes (3a) and (3b). The fuel supply amount is adjusted stepwise by selectively opening and closing the fuel valves (5a) and (5b). A blower (6) is connected to the wind box (4) at the upstream end, and the amount of combustion air supplied from the blower (6) is adjusted stepwise according to the adjustment of the fuel supply amount. Is adjusted to still,
Adjustment of the supply amount of the combustion air is performed by a method of providing an air flow adjusting damper downstream of the blower (6), a method of controlling the rotation speed of the blower (6) by an inverter, or the like.
【００１０】これらの燃料供給量並びに燃焼用空気の供
給量の調節は、燃焼制御装置(7) によって行なわれる
が、この燃焼制御装置(7) は上述のような燃焼量の制御
の他、次のような制御を行なう。即ち、ボイラ(2) の運
転を開始すると、この燃焼制御装置(7) は、実際の燃焼
に先だって送風機(6) を起動して炉内の掃気を行う（プ
レパージ）。所定時間のプレパージ動作後、一方の燃料
弁(5a) を開いて燃料の供給を開始する。この燃料は着
火装置（図示省略）により着火され、実際の燃焼が開始
される。この後、ボイラ(2) への要求負荷の増減に応じ
た燃焼量の調節に際しては、上述した通りであるが、要
求負荷が更に減少した場合に燃焼装置(1)を一旦停止し
て待機状態におく場合、或は、所望時間の運転の後、ボ
イラ(2) の運転を停止させる場合に際しては、燃料弁(5
a),(5b) を閉じて燃料の供給を停止することにより消火
を行い、次に、送風機(6) をそのまま稼働して燃焼後の
排気ガスを炉内から掃気し（ポストパージ）、このポス
トパージ動作を所定時間行った後、送風機(6) を停止さ
せる。The adjustment of the fuel supply amount and the combustion air supply amount is performed by a combustion control device (7). In addition to the above-described control of the combustion amount, the combustion control device (7) controls the following. The following control is performed. That is, when the operation of the boiler (2) is started, the combustion control device (7) activates the blower (6) to perform scavenging of the furnace prior to actual combustion (prepurge). After the prepurge operation for a predetermined time, one of the fuel valves (5a) is opened to start supplying fuel. This fuel is ignited by an ignition device (not shown), and actual combustion is started. Thereafter, the adjustment of the combustion amount in accordance with the increase or decrease of the required load on the boiler (2) is as described above, but if the required load further decreases, the combustion device (1) is temporarily stopped and the standby state is set. Or when the operation of the boiler (2) is stopped after the operation for a desired time, the fuel valve (5
The fire was extinguished by closing fuel supply by closing a) and (5b), and then the blower (6) was operated as it was to scavenge the exhaust gas after combustion from the furnace (post-purge). After performing the post-purge operation for a predetermined time, the blower (6) is stopped.
【００１１】さて、この発明は、燃焼用空気の供給量を
燃焼量に応じて段階的に切替調節する際に、燃焼用空気
の供給量の切替前後において、風量検出器(8) からの検
出信号値の比を所定値と比較し、この検出信号値の比に
基づいて、前記供給量の切替えが正常に行われたかどう
かを判定するものであるから、前記風量検出器(8) の検
出信号が入力されると共に、この判定処理を行う時期、
即ち、送風量の切替えの時期を判別するために、燃焼制
御装置(7) から風量切替の指示信号を受ける判定回路
(9) を備えている。この判定回路(9) においては、風量
検出器(8) からの風量切替以前の検出信号値と、前記燃
焼制御装置(7) から風量切替の指示信号が発せられ、前
記切替後の風量が安定した時点での風量検出器(8) から
の検出信号値とを比較し、小なる検出信号値に対する大
なる検出信号値の比を求める。そして、この比が予め設
定した値よりも大きければ、前記風量の切替えが適正に
行なわれたと判定する。逆に、前記風量切替前後の検出
信号値の比が予め設定した値よりも小さければ、送風機
やダンパ等の故障により風量の切替えが適正に行なわれ
なかったと判定する。尚、前記の設定値は、各燃焼量に
対応する燃焼用空気の供給量について、各燃焼量毎の調
整範囲、及びその調整の誤差や、前述の温度ドリフト量
による誤差等を見込んで設定することにより、前記設定
値を同一のままで多様な機種に適用することができる。
また、風圧は単位時間当りの供給量の自乗に比例するた
め、判定は確実に行なわれる。また、前記風量検出器
(8) からの検出信号は、判定回路(9) を介して燃焼制御
装置(7) に出力されており、判定回路(9) の判定結果
は、前記風量検出器(8) の検出信号と共に燃焼制御装置
(7) に出力される。そして、燃焼制御装置(7) はこの風
量検出器(8) の検出信号、並びに、判定回路(9) の判定
結果に基づいて、燃焼装置を停止させたり、異常事態の
発生の報知を行なう。According to the present invention, when the supply amount of the combustion air is switched stepwise in accordance with the combustion amount, the detection from the air volume detector (8) is performed before and after the switching of the supply amount of the combustion air. Since the ratio of the signal values is compared with a predetermined value, and it is determined whether or not the supply amount switching is normally performed based on the ratio of the detected signal values , the detection of the air volume detector (8) is performed. When a signal is input and this determination process is performed,
That is, a determination circuit that receives an air flow rate switching instruction signal from the combustion control device (7) in order to determine the timing of switching the air flow rate.
(9) is provided. In the determination circuit (9), a detection signal value from the air volume detector (8) before air volume switching and an instruction signal for air volume switching from the combustion control device (7) are issued, and the air volume after the switching is stable. The detected signal value from the air flow detector (8) at the time of the comparison is compared with the detected signal value , and the ratio of the large detected signal value to the small detected signal value is obtained. If the ratio is larger than a preset value, it is determined that the air volume has been properly switched. Conversely, detection before and after the air volume switching
If the ratio of the signal values is smaller than a preset value , it is determined that the air volume has not been properly switched due to a failure of the blower, the damper, or the like. The above-mentioned set values are set in consideration of the supply range of the combustion air corresponding to each combustion amount, an adjustment range for each combustion amount, an error in the adjustment, an error due to the aforementioned temperature drift amount, and the like. Thus, the same set value can be applied to various models while maintaining the same value.
In addition, since the wind pressure is proportional to the square of the supply amount per unit time, the determination is reliably performed. In addition, the air volume detector
Detection signals from (8) is outputted to the combustion controller via a decision circuit (9) (7), the determination result of the decision circuit (9), together with the detection signal of the air amount detector (8) Combustion control device
Output to (7). Then, based on the detection signal of the air volume detector (8) and the determination result of the determination circuit (9) , the combustion control device (7) stops the combustion device or notifies the occurrence of an abnormal situation.
【００１２】以上の判定要領を図２を参照しながら説明
する。この図面は、風量の切替えタイミングと風量の変
化を示すもので、縦軸が風量検出器(8) の検出信号値に
基づく燃焼用空気の供給圧力である。この図において、
所定時間の低燃焼の後、高燃焼に移行し、更にこの高燃
焼を所定時間維持した後、低燃焼に移行した状態を示
す。先ず、低燃焼状態から高燃焼状態に切替える場合に
ついて考えると、低燃焼状態から高燃焼状態に切替える
際には、燃料弁(5a) に加え、残りの燃料弁(5b)を開
け、同時に送風機(6) 自体或はダンパを制御することに
よって燃焼用空気の供給量を増加させる。このとき、正
常に切替えが行なわれた場合には、低燃焼時の圧力ＰL
は、図中実線で示す高燃焼時の圧力ＰH に変化する。し
かし、前記送風機やその駆動装置、ダンパ等の故障によ
り、高燃焼への切替後の圧力が、正規の値より低い圧
力、例えば図中点線で示すように殆ど変化しなかった場
合にはこの圧力ＰH'と低燃焼時の圧力ＰL の比は小さく
なる。この際の検出圧力の比は、前記した設定値と比較
され、この設定値よりも小さければ切替えが適正に行な
われなかったと判定する。The above determination procedure will be described with reference to FIG. This drawing shows the switching timing of the air volume and the change of the air volume. The vertical axis indicates the supply pressure of the combustion air based on the detection signal value of the air volume detector (8). In this figure,
This shows a state in which the combustion shifts to a high combustion after the low combustion for a predetermined time, and further maintains the high combustion for a predetermined time and then shifts to a low combustion. First, when switching from the low combustion state to the high combustion state, when switching from the low combustion state to the high combustion state, in addition to the fuel valve (5a), the remaining fuel valve (5b) is opened, and the blower ( 6) Increase the supply of combustion air by controlling itself or the damper. At this time, if the switching is performed normally, the pressure PL during low combustion
Changes to the high combustion pressure PH shown by the solid line in the figure. However, when the pressure after switching to the high combustion is lower than the normal value, for example, as shown by a dotted line in the drawing, the pressure does not substantially change due to the failure of the blower, its driving device, the damper, and the like. The ratio between PH 'and the pressure PL during low combustion becomes smaller. The ratio of the detected pressure at this time is compared with the set value described above, and if it is smaller than the set value, it is determined that the switching has not been properly performed.
【００１３】次に、高燃焼状態から低燃焼状態に切替え
る場合について考えると、高燃焼状態から低燃焼状態に
切替える際には、一方の燃料弁(5b) を閉じ、残りの燃
料弁(5b) を開けた状態となっており、同時に送風機
(6) 自体或はダンパを制御することによって燃焼用空気
の供給量を減少させる。このとき、正常に切替えが行な
われた場合には、高燃焼時の圧力ＰH は、図中実線で示
す低燃焼時の圧力ＰL に変化する。しかし、前記送風機
やその駆動装置、ダンパ等の故障により、高燃焼への切
替後の圧力が、正規の値より高い圧力、例えば図中点線
で示すように殆ど変化しなかった場合にはこの圧力ＰH
と低燃焼時の圧力ＰL'の比は小さくなる。この際の検出
圧力の比は、前述のように前記の設定値と比較され、こ
の設定値よりも小さければ切替えが適正に行なわれなか
ったと判定する。Next, when switching from the high combustion state to the low combustion state, when switching from the high combustion state to the low combustion state, one fuel valve (5b) is closed and the remaining fuel valve (5b) is closed. Is open and the blower
(6) Reduce the supply of combustion air by controlling itself or the damper. At this time, if the switching is performed normally, the pressure PH at the time of high combustion changes to the pressure PL at the time of low combustion indicated by a solid line in the figure. However, when the pressure after switching to the high combustion is higher than the normal value, for example, as shown by a dotted line in the drawing, the pressure does not change if the pressure after switching to the high combustion is hardly changed due to the failure of the blower, the driving device thereof, the damper, and the like. PH
And the pressure PL 'at the time of low combustion becomes small. The ratio of the detected pressure at this time is compared with the set value as described above, and if it is smaller than the set value, it is determined that the switching has not been properly performed.
【００１４】このように、常に、風量切り替え前後の風
量検出器(8) の検出信号値の比によって風量切替の判定
を行うことにより、風量検出器(8) の温度特性による誤
差に関係なく判定することができると共に、各風量検出
器(8) の固体差による検出値の誤差も吸収して確実な判
定を行なうことができ、総じて、制御並びに異常検出の
精度を長期に渡って維持することができる。以上のこと
により、温度ドリフト特性等の良好な高価な検出器を用
いることなく、しかも、温度補償用の温度検出器を不要
にし、制御自体も簡単な構成とすることができる。尚、
以上の実施例は、この発明を、送風機(6) の下流側に風
量調節ダンパを設けたり、送風機(6) の回転数を制御す
ることによって燃焼用空気の供給量の調整を行なうもの
に適用した場合について説明したが、近年においては、
前記燃焼用空気の供給量の調整を、着火時等の特定の動
作時のみダンパで制御し、通常時には送風機(6) の回転
数を制御することによって行うものもあり、このような
燃焼装置においても同様にこの発明を適用し得ることは
云うまでもない。尚、以上の実施例においては、風量検
出器(8) を直接、ウインドボックス(4)に取付けたもの
としているが、前述のようなボイラ(2) においては、風
量検出器(8) を比較的温度変化の少ない箇所（例えば制
御ボックス内等）に配置し、この風量検出器(8) とウイ
ンドボックス(4) とを導管によって接続し、前述の温度
の影響を低減させたものがあり、この発明は、このよう
な取付構造のものにおいても同様に適用できる。[0014] Thus, at all times, by the ratio of the detection signal value of air volume before and after switching the air <br/> amount detector (8) Thus by performing the determination of the air flow switch, temperature characteristics of air volume detector (8) Can be determined irrespective of the error caused by the air flow, and the error of the detection value due to the individual difference of each air volume detector (8) can be absorbed to make a reliable determination, and in general, the accuracy of control and abnormality detection can be extended. Can be maintained over. As described above, a temperature detector for temperature compensation is not required without using an expensive detector having good temperature drift characteristics and the like, and the control itself can be made simple. still,
Above example, application of the present invention, may be provided to adjust flow rate damper downstream of the blower (6), in that to adjust the supply amount of combustion air by controlling the rotational speed of the blower (6) Was described, but in recent years,
Adjustment of the supply amount of the combustion air is controlled by a damper only during a specific operation such as ignition, and is usually performed by controlling the rotation speed of a blower (6). It is needless to say that the present invention can be similarly applied. In the above embodiment, the air volume detector (8) is directly attached to the wind box (4), but in the boiler (2) as described above, the air volume detector (8) is compared. The air flow detector (8) and the wind box (4) are connected by a conduit to reduce the influence of temperature described above. The present invention can be similarly applied to such a mounting structure.
【００１５】[0015]
【発明の効果】以上説明したように、この発明は、燃焼
用空気の供給量を燃焼量に応じて段階的に切替調節する
際に、燃焼用空気の供給量の切替前後において、風量検
出器からの検出信号値の比を所定値と比較し、前記検出
信号値の比が所定値よりも大きいときに切替が正常に行
われたと判定するようにしたものであるから、風量の切
替えが適切に行なわれたかどうかを正確に判定すること
ができるため、制御並びに異常検出を精度良く行うこと
ができる。しかも、燃焼量の切替えの前後での検出信号
値の比を利用して判定しているため、風量検出器の誤差
を吸収して確実な検出を行なうことができる。As described above, according to the present invention, when the supply amount of the combustion air is switched in a stepwise manner in accordance with the combustion amount, the air flow detector is provided before and after the switching of the supply amount of the combustion air. Is compared with a predetermined value, and when the ratio of the detection signal values is larger than the predetermined value, it is determined that the switching has been normally performed. Since it can be accurately determined whether or not the control has been performed, control and abnormality detection can be performed with high accuracy. Moreover, the detection signal before and after switching of the combustion amount
Since the determination is made using the ratio of the values , the error of the air volume detector can be absorbed to perform the reliable detection.
【図１】この発明の具体的一実施例を示す概略構成図で
ある。FIG. 1 is a schematic configuration diagram showing a specific embodiment of the present invention.
【図２】この発明における風量切替の良否の判定要領の
説明図である。FIG. 2 is an explanatory diagram of a procedure for determining the quality of air volume switching according to the present invention.
(1) 燃焼装置 (4) ウインドボックス（燃焼用空気の供給経路） (8) 風量検出器 (9) 判定回路 (1) Combustion device (4) Wind box (combustion air supply path) (8) Air flow detector (9) Judgment circuit
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F23N 1/02 102 F23N 5/18 101 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) F23N 1/02 102 F23N 5/18 101
Claims (1)
階的に切替調節する燃焼装置(1) において、燃焼用空気
の供給経路(4) に燃焼用空気の供給状態を検出する風量
検出器(8) を設け、燃焼用空気の供給量の切替前後にお
ける風量検出器(8) からの検出信号値の比を所定値と比
較し、前記検出信号値の比が所定値よりも大きいときに
燃焼用空気の供給量の切替が正常に行われたと判定する
ことを特徴とする燃焼装置における風量切替判定方法。1. A combustion device (1) for adjusting stepwise switching in accordance with the combustion rate of the supply quantity of combustion air, the air volume for detecting the state of supply of combustion air to the supply path of the combustion air (4) Detector (8) is installed , and before and after switching the supply amount of combustion air .
Takes the ratio of the detection signal value from the airflow detector (8) is compared with a predetermined value, the detection ratio of the signal value normally switched supply amount of <br/> combustion air when greater than a predetermined value A method for determining air volume switching in a combustion device, comprising determining that the air flow has been performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6334992A JP2973849B2 (en) | 1994-12-19 | 1994-12-19 | Method for determining air volume switching in combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6334992A JP2973849B2 (en) | 1994-12-19 | 1994-12-19 | Method for determining air volume switching in combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08178263A JPH08178263A (en) | 1996-07-12 |
| JP2973849B2 true JP2973849B2 (en) | 1999-11-08 |
Family
ID=18283523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6334992A Expired - Lifetime JP2973849B2 (en) | 1994-12-19 | 1994-12-19 | Method for determining air volume switching in combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2973849B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6277873B2 (en) * | 2014-06-11 | 2018-02-14 | 三浦工業株式会社 | boiler |
| JP7074337B2 (en) * | 2018-07-17 | 2022-05-24 | 株式会社サムソン | Combustion device that detects vibration combustion |
-
1994
- 1994-12-19 JP JP6334992A patent/JP2973849B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08178263A (en) | 1996-07-12 |
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