JPS6131369B2 - - Google Patents
Info
- Publication number
- JPS6131369B2 JPS6131369B2 JP57023549A JP2354982A JPS6131369B2 JP S6131369 B2 JPS6131369 B2 JP S6131369B2 JP 57023549 A JP57023549 A JP 57023549A JP 2354982 A JP2354982 A JP 2354982A JP S6131369 B2 JPS6131369 B2 JP S6131369B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel
- pump
- fuel ratio
- flow 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.)
- Expired
Links
- 239000000446 fuel Substances 0.000 claims description 44
- 238000002485 combustion reaction Methods 0.000 claims description 16
- 238000009423 ventilation Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000779 smoke Substances 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2233/00—Ventilators
- F23N2233/06—Ventilators at the air intake
- F23N2233/08—Ventilators at the air intake with variable speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
Description
【発明の詳細な説明】
(a) 技術分野の説明
本発明はボイラ用制御装置に係り、通風機駆動
用電動機に可変速電動機を使用した場合の、ボイ
ラ用制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Description of the Technical Field The present invention relates to a control device for a boiler, and more particularly, to a control device for a boiler when a variable speed motor is used as an electric motor for driving a ventilator.
(b) 従来技術の説明
発電所、ないしは一般工場の蒸気発生源とし
て、多くのボイラ設備が用いられている。近年、
省エネルギーの目的で、押込通風機（FDF）を
可変速電動機により駆動して回転数を変化させ、
通風量を調整する方法が実施されている。第１図
はこのようなボイラ設備の典型的構成を示すもの
で、１はボイラの燃焼室、２は燃焼室１内に取り
付けられる水管であり、この管の中を水が通過す
る間に加熱されて蒸気になる。３は燃焼室１に重
油などの燃料を供給するための管路、４は重油な
どの燃料流量を調節する流量調節弁、５は重油な
どの燃料を供給するためのポンプ、６はこのポン
プ５を駆動するための電動機である。(b) Description of the prior art Many boiler equipment are used as steam generation sources in power plants or general factories. recent years,
For the purpose of energy saving, a forced draft fan (FDF) is driven by a variable speed electric motor to change the rotation speed.
Methods are being implemented to adjust the amount of ventilation. Figure 1 shows a typical configuration of such boiler equipment, where 1 is the combustion chamber of the boiler, 2 is a water pipe installed in the combustion chamber 1, and water is heated while passing through this pipe. and become steam. 3 is a pipe line for supplying fuel such as heavy oil to the combustion chamber 1; 4 is a flow rate control valve for regulating the flow rate of fuel such as heavy oil; 5 is a pump for supplying fuel such as heavy oil; 6 is this pump 5 This is an electric motor for driving.
又、７は燃焼室１に燃焼のための空気を供給す
るための通風管路、８は通風管路７に接続して設
置され空気を燃焼室１に押込むための押込通風
機、９はこの押込通風機８を駆動するための電動
機、１０は電動機９を可変速制御するための、電
圧形インバータ装置である。１１は負荷の要求に
応じて必要油量、風量を決定し、流量調節弁４の
開度、電圧形インバータ装置の出力周波数を決定
するマスターコントローラ、１２は燃焼室１で燃
焼した排ガスを外部に排出するための煙突であ
る。なお、同図には示してないが、水管は外部に
負荷として必要な蒸気を出力し、同時に補給のた
めの給水がなされる。 Further, 7 is a ventilation pipe for supplying air for combustion to the combustion chamber 1, 8 is a forced draft fan installed connected to the ventilation pipe 7 to push air into the combustion chamber 1, and 9 is a forced draft fan for forcing air into the combustion chamber 1. An electric motor 10 is a voltage type inverter for controlling the electric motor 9 at variable speed. 11 is a master controller that determines the required oil amount and air volume according to load requirements, the opening degree of the flow rate control valve 4, and the output frequency of the voltage type inverter device; 12 is a controller that directs the exhaust gas combusted in the combustion chamber 1 to the outside; It is a chimney for exhaust. Although not shown in the figure, the water pipe outputs the necessary steam to the outside as a load, and at the same time supplies water for replenishment.
このような構成において、外部に出る蒸気は、
負荷側からの要求にしたがい蒸気圧力、蒸気温度
を所定値に保持する必要があり、このために燃料
供給量、および通風量を変化させて、燃焼室１内
での発熱量を所定値に調整する。一方、燃料供給
量と通風量の比率（空燃比）は、一定に保持され
る必要がある。これは燃料供給量が過剰の場合に
は、酸素不足となつて不完全燃焼し、煙突から黒
煙が出るので公害問題、効率低下の問題などが発
生し、又、通風量が過剰の場合には、燃焼されえ
ない空気を余分に加熱することになり、プラント
の効率低下を招くことになるためである。 In such a configuration, the steam exiting to the outside is
It is necessary to maintain steam pressure and steam temperature at predetermined values according to requests from the load side, and for this purpose, the amount of fuel supply and ventilation amount are changed to adjust the amount of heat generated in the combustion chamber 1 to a predetermined value. do. On the other hand, the ratio between the amount of fuel supply and the amount of ventilation (air-fuel ratio) needs to be kept constant. This is because if the amount of fuel supplied is excessive, there will be a lack of oxygen and incomplete combustion will occur, causing black smoke to come out of the chimney, causing problems such as pollution and reduced efficiency.Also, if the amount of ventilation is excessive, This is because the air that cannot be combusted is heated excessively, leading to a decrease in the efficiency of the plant.
第２図は、第１図の電圧形インバータ１０の制
御ブロツク図を示し、１３はインバータ装置に電
力を供給する交流電源、１４は交流電源１３から
供給される交流電力を直流に変換する順変換装
置、１５は直流系統、１６は直流を、さらに所定
の周波数の交流に変える逆変換装置、１７は交流
系統である。１８は直流系統１５の電圧がある値
以上になると動作する過電圧故障検出器、１９は
直流ライン１５の電圧が、過電圧故障検出器１５
が動作するより低いある値以上になると動作する
過電圧検出器、２０は過電圧検出器１９が動作す
ると動作する減速制限時間変更器、２１は減速制
限時間変更器２０の動作により減速時間を変更す
る減速時間制限装置、２２は減速時間制限装置２
１を通つたマスターコントローラ１１の速度指令
により、インバータの出力周波数指令を行なう周
波数指令装置である。 FIG. 2 shows a control block diagram of the voltage source inverter 10 of FIG. 1, where 13 is an AC power supply that supplies power to the inverter device, and 14 is a forward conversion converter that converts the AC power supplied from the AC power supply 13 into DC. 15 is a DC system; 16 is an inversion device that further converts DC into AC of a predetermined frequency; and 17 is an AC system. 18 is an overvoltage fault detector that operates when the voltage of the DC line 15 exceeds a certain value; 19 is an overvoltage fault detector that operates when the voltage of the DC line 15 exceeds a certain value;
20 is a deceleration limit time changer that is activated when the overvoltage detector 19 is activated, and 21 is a deceleration device that changes the deceleration time by the operation of the deceleration limit time changer 20. Time limit device, 22 is deceleration time limit device 2
This is a frequency command device that commands the output frequency of the inverter based on the speed command of the master controller 11 that passes through the inverter.
ポンプ、フアンなどの２乗負荷の回転体を、自
然降速により減速させる場合には、減速時間は(1)
式となる。 When decelerating a rotating body with a square load such as a pump or fan by natural deceleration, the deceleration time is (1)
The formula becomes
ｔ＝ＧＤ２×（Ｎ２−Ｎ１）／３７５×Ｔ（SEC）…
……(1)
ここで、GD2の負荷のGD2（Kg−m2）、N2は最
初の回転数（rpm）、N1は減速後の回転数
（rpm）、Ｔは負荷のトルク（Kg−ｍ）である。 t= GD2 ×( N2 - N1 )/375×T(SEC)...
...(1) Here, GD 2 (Kg-m 2 ) of the load of GD 2 , N 2 is the initial rotation speed (rpm), N 1 is the rotation speed after deceleration (rpm), and T is the torque of the load. (Kg-m).
(1)式中負荷のトルクＴは回転数の２乗に比例す
るため、多い回転数範囲であるほど、また負荷の
GD2が大きいほど、減速時間は長くなることにな
る。 (1) In equation (1), the load torque T is proportional to the square of the rotation speed, so the larger the rotation speed range, the more the load
The larger GD 2 is, the longer the deceleration time will be.
一般に、押込フアン８のGD2は大きいため、低
い回転数範囲で自然降速する場合の減速時間は長
くなり、この時間より早く減速させようとする場
合には、電動機９が発電機として作用し、逆変換
器１６を通して直流系統１５に電力がもどされ
る。電圧形インバータの場合には、順変換器１４
を通して交流電源１３への電力回生は行なえない
ため、この状態が続くと直流系統１５の電圧が上
昇する。そして過電圧故障検出器１８が動作し
て、インバータは過電圧故障となつて、停止す
る。これを防ぐため、過電圧検出器１９により直
流ラインの電圧を検出し、過電圧故障検出器１８
が動作する前に、インバータの減速時間制限装置
２１の設定値を、減速制限時間変更器２０を介し
て長くすることにより、対応させている。一方、
流量調整弁４の動作時間は一定であり、上記の処
理を行なつた場合、減速中の空気の減少率、燃料
の減少率が異なり、空燃比が一定に保たれなくな
るため、黒煙の発生、効率の低下などの問題が発
生した。 In general, since GD 2 of the push fan 8 is large, the deceleration time when decelerating naturally in a low rotational speed range is long, and when attempting to decelerate faster than this time, the electric motor 9 acts as a generator. , the power is returned to the DC system 15 through the inverter 16. In the case of a voltage source inverter, the forward converter 14
Since power cannot be regenerated to the AC power supply 13 through the AC power source 13, if this state continues, the voltage of the DC system 15 will increase. The overvoltage fault detector 18 then operates, causing an overvoltage fault and stopping the inverter. To prevent this, the voltage of the DC line is detected by the overvoltage detector 19, and the overvoltage fault detector 18
The setting value of the deceleration time limiter 21 of the inverter is made longer via the deceleration limit time changer 20 before the inverter operates. on the other hand,
The operating time of the flow rate adjustment valve 4 is constant, and if the above process is performed, the rate of decrease in air and rate of decrease in fuel during deceleration will be different, and the air-fuel ratio will not be kept constant, resulting in the generation of black smoke. , problems such as decreased efficiency occurred.
第３図は、以上の問題を減少させるためのボイ
ラ設備の一例を示し、２３はマスターコントロー
ラ１１の指令を受けて、燃料ポンプ用電動機６を
可変速制御するインバータである。燃料流量は第
１図の構成では流量調節弁４により制御していた
が、本例ではポンプ５を回転数制御することによ
り、燃料流量を制御することを特徴とする。第４
図は、第３図中の電圧形インバータ１０及び２３
の制御ブロツク図である。前記のＬに押込通風機
はGD2が大きく、式で示した減速時間より早い減
速を行なうと、電動機９が発電機として作用し、
直流系統１５の電圧が上昇し、過電圧検出器１８
が動作して、インバータは過電圧故障となる。 FIG. 3 shows an example of boiler equipment for reducing the above problems, and 23 is an inverter that receives commands from the master controller 11 and controls the fuel pump electric motor 6 at variable speed. Although the fuel flow rate was controlled by the flow control valve 4 in the configuration shown in FIG. 1, this example is characterized in that the fuel flow rate is controlled by controlling the rotation speed of the pump 5. Fourth
The figure shows voltage source inverters 10 and 23 in FIG.
FIG. The forced draft fan described above has a large GD 2 , and when deceleration is performed faster than the deceleration time shown in the formula, the motor 9 acts as a generator,
The voltage of the DC system 15 increases and the overvoltage detector 18
operates, causing an overvoltage failure in the inverter.
したがつて、これを防止するため、過電圧検出
器１９により直流系統１５の電圧を検出し、過電
圧故障検出器１８が動作する前に、インバータの
減速時間制限装置２１の設定値を減速制限時間変
更器２０を介して長くする。同時に、ポンプ用イ
ンバータ２３の減速時間制限装置２４も、減速制
限時間変更器２０により同等に長くしてやる。こ
れにより、従来の流量調節弁４により給油量を制
御していたため、減速中の空気の減少率と燃料の
減少率が異なつてしまい。空燃比が一定に保たれ
なかつたものが、ポンプ５をインバータ化し、両
インバータの減速制限時間を同時に変更すること
により、第１図のボイラー設備に比べて空燃比が
改善される。しかしこの第３図のボイラー構成で
も、ポンプ、押込通風機の特性のちがい等によ
り、減速中に空燃比が一定に保たれなくなり、黒
煙の発生、効率の低下などの問題の発生する欠点
を有した。 Therefore, in order to prevent this, the overvoltage detector 19 detects the voltage of the DC system 15, and before the overvoltage failure detector 18 operates, the set value of the inverter deceleration time limiter 21 is changed to the deceleration limit time. It is lengthened through the container 20. At the same time, the deceleration time limiter 24 of the pump inverter 23 is similarly lengthened by the deceleration limit time changer 20. As a result, since the amount of refueling was controlled by the conventional flow control valve 4, the rate of decrease in air and the rate of decrease in fuel during deceleration were different. Although the air-fuel ratio could not be kept constant, the air-fuel ratio can be improved compared to the boiler equipment shown in FIG. 1 by replacing the pump 5 with an inverter and changing the deceleration limit time of both inverters at the same time. However, even with the boiler configuration shown in Figure 3, due to differences in the characteristics of the pump and forced draft fan, the air-fuel ratio cannot be maintained constant during deceleration, resulting in problems such as generation of black smoke and reduced efficiency. I had it.
(c) 発明の目的
本発明は上記事情に鑑みなされ、押込通風機、
燃料ポンプを電圧形インバータを介して回転数制
御を行なうボイラ装置において、減速中インバー
タが過電圧故障になることなく、かつ空燃比を一
定に保つことにより、黒煙の発生を防止して効率
低下を生じることのない、前記欠点のないボイラ
用制御装置を提供することを目的とする。(c) Purpose of the Invention The present invention was made in view of the above circumstances, and includes a forced draft fan,
In boiler systems that control the rotation speed of the fuel pump via a voltage-type inverter, this system prevents the inverter from overvoltage failure during deceleration and maintains the air-fuel ratio constant, thereby preventing the generation of black smoke and reducing efficiency. It is an object of the present invention to provide a boiler control device that does not have the above-mentioned drawbacks.
(d) 発明の構成と作用
以下本発明を図面を参照して説明する。第５図
及び第６図は、本発明の一実施例を示し、２６は
燃焼室１に送り込まれる燃料流量を検出する燃料
流量検出器、２７は燃焼室１に送りこまれる空気
量を検出する空気流量検出器である。２８は燃料
流量検出器２６、空気流量検出器２７の信号から
空燃比を計算し、その値が設定値よりある値ずれ
た場合、ポンプ用インバータの減速率に補正を加
える空燃比計算器である。ＱAを燃料流量、ＱBを
空気流量Ｒを設定空燃比とおけば、空燃比偏差△
Ｒは、
△Ｒ＝Ｒ−ＱＡ／ＱＢ ………(2)
より得られる。(d) Structure and operation of the invention The present invention will be explained below with reference to the drawings. 5 and 6 show an embodiment of the present invention, 26 is a fuel flow rate detector for detecting the flow rate of fuel fed into the combustion chamber 1, and 27 is an air flow detector for detecting the amount of air fed into the combustion chamber 1. It is a flow rate detector. 28 is an air-fuel ratio calculator that calculates the air-fuel ratio from the signals of the fuel flow rate detector 26 and the air flow rate detector 27, and if the value deviates by a certain value from the set value, corrects the deceleration rate of the pump inverter. . If Q A is the fuel flow rate and Q B is the air flow rate R is the set air-fuel ratio, then the air-fuel ratio deviation △
R is obtained from ΔR=R−Q A /Q B (2).
(2)式から明らかなように、空気流量ＱBが減速
中に過多となると、△Ｒが正の値で大きくなる。
△Ｒがある値となると、ボイラ燃焼上エアーリツ
チとなつてしまうため、第６図の空燃比計算器２
８から指令を出しポンプ用インバータ減速時間制
御装置２４の設定時間を長くして、減速中の空燃
比を一定に保つ。燃料流量が過多となつた場合、
(2)式で示した△Ｒが負の値で大きくなる。△Ｒが
ある値となると、ボイラ燃焼上、オイルリツチと
なつてしまうため、第６図の空燃比計算器２８よ
り指令を出し、ポンプ用インバータ減速時間制限
装置２４の設定時間を短かくして、減速中の空燃
比を一定に保つ。なお、以上の説明において、ポ
ンプ用可変速装置２３は、電圧形インバータ装置
に限らず、電圧形インバータECモータなど、他
の可変速装置に置きかえてもよい。 As is clear from equation (2), when the air flow rate Q B becomes excessive during deceleration, △R becomes large with a positive value.
When △R reaches a certain value, the boiler combustion becomes air rich, so air-fuel ratio calculator 2 in Figure 6
A command is issued from 8 to lengthen the set time of the pump inverter deceleration time control device 24 to keep the air-fuel ratio constant during deceleration. If the fuel flow becomes excessive,
ΔR shown in equation (2) becomes larger as it becomes a negative value. If ΔR reaches a certain value, the boiler will burn and become oil rich. Therefore, the air-fuel ratio calculator 28 shown in FIG. Keep the air-fuel ratio constant. In the above description, the pump variable speed device 23 is not limited to the voltage type inverter device, but may be replaced with another variable speed device such as a voltage type inverter EC motor.
(e) 総合的な効果
このようにして本発明によれば、従来、燃料ポ
ンプと押込通風機の特性のちがい等により、減速
中に空燃比が一定に保たれなかつたものを、燃料
流量、空気流量を検出し、空燃比を計算して、イ
ンバータの減速時間制限装置に補正を加える事に
より、空燃比を一定に保つた過電圧故障の起きな
い減速を行なうことのできる効果的なボイラ用制
御装置が供給できる。(e) Overall effect In this way, according to the present invention, the fuel flow rate, Effective boiler control that can maintain a constant air-fuel ratio and perform deceleration without overvoltage failure by detecting the air flow rate, calculating the air-fuel ratio, and making corrections to the inverter's deceleration time limiter. Equipment can be supplied.
第１図はボイラ設備のシステム構成図、第２図
は第１図の電圧形インバータ１０の制御ブロツク
図、第３図はボイラポンプを可変速化したボイラ
設備のシステム構成図、第４図は第３図の電圧形
インバータ１０，２３の制御ブロツク図、第５図
は本発明の一実施例を示すボイラ設備のシステム
構成図、第６図は第５図の電圧形インバータ１０
及び２３の制御ブロツク図である。
２……水管、３……燃料供給管路、４……流量
調節弁、７……空気通風管路、８……押込通風機
（FDF）、１５……直流系統。
Figure 1 is a system configuration diagram of boiler equipment, Figure 2 is a control block diagram of the voltage source inverter 10 shown in Figure 1, Figure 3 is a system configuration diagram of boiler equipment with a variable speed boiler pump, and Figure 4 is a system configuration diagram of boiler equipment. FIG. 3 is a control block diagram of voltage source inverters 10 and 23, FIG. 5 is a system configuration diagram of boiler equipment showing an embodiment of the present invention, and FIG. 6 is a control block diagram of voltage source inverters 10 and 23 shown in FIG.
and 23 are control block diagrams. 2... Water pipe, 3... Fuel supply pipe, 4... Flow control valve, 7... Air ventilation pipe, 8... Forced draft fan (FDF), 15... DC system.
Claims (1)
プを駆動するポンプ用電動機及びこのポンプ用電
動機に電力を供給し回転数を制御するポンプ用可
変速装置と、前記燃焼室に送り込まれる燃料流量
を検出する燃料流量検出器と、前記燃焼室に空気
を送り込む押込通風機と、この押込通風機を駆動
する通風機用電動機及びこの通風機用電動機に電
力を供給し回転数を制御する通風機用の電圧形イ
ンバータ装置と、送り込まれる空気量を検出する
空気流量検出器と、前記燃料流量検出器及び前記
空気流量検出器の出力を入力して燃料供給量と通
風量の比率（空燃比）を計算し、前記空燃比が設
定値からずれた場合、前記ポンプ用可変速装置の
減速率を補正する空燃比計算器と、この空燃比計
算器からの指令によつて前記ポンプ用可変速装置
の減速時間を制御する減速時間制限装置とを具備
し、前記空燃比を一定に保持することを特徴とし
たボイラ用制御装置。1. A pump that feeds fuel into the combustion chamber, a pump electric motor that drives this pump, a pump variable speed device that supplies power to this pump electric motor and controls the rotation speed, and detects the flow rate of fuel that is fed into the combustion chamber. a forced draft fan that sends air into the combustion chamber; a draft fan motor that drives the draft draft fan; and a draft fan motor that supplies power to the draft fan motor and controls its rotational speed. Calculate the ratio between the fuel supply amount and the ventilation amount (air-fuel ratio) by inputting the outputs of the voltage source inverter device, the air flow rate detector that detects the amount of air fed, the fuel flow rate detector, and the air flow rate detector. If the air-fuel ratio deviates from the set value, an air-fuel ratio calculator corrects the deceleration rate of the pump variable speed device, and the pump variable speed device is decelerated by a command from the air-fuel ratio calculator. 1. A control device for a boiler, comprising: a deceleration time limiting device for controlling time, and maintaining the air-fuel ratio constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57023549A JPS58142115A (en) | 1982-02-18 | 1982-02-18 | Controller for boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57023549A JPS58142115A (en) | 1982-02-18 | 1982-02-18 | Controller for boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58142115A JPS58142115A (en) | 1983-08-23 |
| JPS6131369B2 true JPS6131369B2 (en) | 1986-07-19 |
Family
ID=12113560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57023549A Granted JPS58142115A (en) | 1982-02-18 | 1982-02-18 | Controller for boiler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58142115A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014167737A1 (en) * | 2013-04-09 | 2014-10-16 | 日本オイルポンプ株式会社 | Burner |
| WO2015189975A1 (en) * | 2014-06-13 | 2015-12-17 | 日本オイルポンプ株式会社 | Oxygen concentration sensor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003050043A (en) * | 2001-08-06 | 2003-02-21 | Howa Kasei Kk | Connecting structure of air diffuser and air duct |
| DE102005013546A1 (en) * | 2005-03-23 | 2006-09-28 | Honeywell Technologies Sarl | Monitoring combustion in e.g. premix oil burners comprises evaluating quotient of two parameters related to progress of combustion, determining if this value lies in desired range and producing signal indicating if this is so or not |
-
1982
- 1982-02-18 JP JP57023549A patent/JPS58142115A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014167737A1 (en) * | 2013-04-09 | 2014-10-16 | 日本オイルポンプ株式会社 | Burner |
| WO2014167646A1 (en) * | 2013-04-09 | 2014-10-16 | 日本オイルポンプ株式会社 | Burner |
| JPWO2014167737A1 (en) * | 2013-04-09 | 2017-02-16 | 日本オイルポンプ株式会社 | burner |
| WO2015189975A1 (en) * | 2014-06-13 | 2015-12-17 | 日本オイルポンプ株式会社 | Oxygen concentration sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58142115A (en) | 1983-08-23 |
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