JPH06331140A - Air fuel ratio monitoring device for gas burner - Google Patents

Air fuel ratio monitoring device for gas burner

Info

Publication number
JPH06331140A
JPH06331140A JP13931393A JP13931393A JPH06331140A JP H06331140 A JPH06331140 A JP H06331140A JP 13931393 A JP13931393 A JP 13931393A JP 13931393 A JP13931393 A JP 13931393A JP H06331140 A JPH06331140 A JP H06331140A
Authority
JP
Japan
Prior art keywords
air
gas
ratio
pressure
fuel ratio
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
Application number
JP13931393A
Other languages
Japanese (ja)
Other versions
JP3181142B2 (en
Inventor
Yasutaka Arai
保孝 新井
Norikazu Kubota
伯一 久保田
Hideki Uchida
英樹 内田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osaka Gas Co Ltd
Sanyo Electric Co Ltd
Original Assignee
Osaka Gas Co Ltd
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Osaka Gas Co Ltd, Sanyo Electric Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP13931393A priority Critical patent/JP3181142B2/en
Publication of JPH06331140A publication Critical patent/JPH06331140A/en
Application granted granted Critical
Publication of JP3181142B2 publication Critical patent/JP3181142B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Regulation And Control Of Combustion (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

PURPOSE:To develop an air fuel ratio monitoring device in which a calculating accuracy of an air ratio in a combustion device such as a gas boiler and a gas absorbing cold or hot water machine is improved, this air ratio is monitored, the air fuel ratio is kept constant, the fuel is stably and completely ignited without generating any carbon monoxide or soot, an alarm is produced if an abnormal state occurs or its combustion is stopped. CONSTITUTION:An air ratio in a gas combustion device is calculated in reference to a gas pressure and an air pressure and an air-fuel-ratio is monitored in a gas burner monitoring device. In such a gas burner monitoring device, data of gas pressure and air pressure sensed for every predetermined time are stored at the memory part arranged for every rate of load. When the memory part is saturated, its mean value is calculated by an operation device so as to get an air-fuel-ratio and subsequently the operation device may calculate a moving mean value every time the new detected data of gas pressure and air pressure are stored in the memory device. The air-fuel-ratio is calculated in response to each of the moving mean values and then outputted as data.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はガスバーナの空燃比監視
装置に関するものであり、さらに詳しくは、ガスボイラ
ー、ガス吸収冷温水機用等の燃焼装置の空気比を監視
し、空燃比を一定に保ち、一酸化炭素やすすなどを発生
させることなく安定的に完全燃焼させ、異常があれば警
報をだしたり、燃焼を停止したりする空燃比監視装置に
関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-fuel ratio monitoring device for a gas burner, and more specifically, it monitors the air ratio of a combustion device for a gas boiler, a gas absorption chiller-heater, etc. to keep the air-fuel ratio constant. The present invention relates to an air-fuel ratio monitoring device that keeps a stable and complete combustion without generating carbon monoxide or soot and issues an alarm or stops the combustion if an abnormality occurs.

【0002】[0002]

【従来の技術】従来、ガスボイラー、ガス吸収式冷温水
機、吸収式冷凍機などにおいては一般に、ガス圧力と、
空気圧力とにより空気比を演算し、空燃比を監視する比
例制御ガスバーナが用いられているが、流体(ガス、空
気)は乱流となっており、検出部の圧力は大きな脈動を
もっているため、制御性が悪く、空燃比が所定の値から
はずれて一酸化炭素が発生するなどの問題が生じる。
2. Description of the Related Art Conventionally, in a gas boiler, a gas absorption chiller / heater, an absorption chiller, etc.
A proportional control gas burner that calculates the air ratio from the air pressure and monitors the air-fuel ratio is used, but the fluid (gas, air) is turbulent, and the pressure at the detection part has large pulsation, The controllability is poor, and there arises a problem that the air-fuel ratio deviates from a predetermined value and carbon monoxide is generated.

【0003】[0003]

【発明が解決しようとする課題】本発明の目的は、ガス
圧力と、空気圧力とにより空気比を演算し、空燃比を監
視する時、演算空気比の数値精度を上げ、空燃比を一定
に保ち、一酸化炭素やすすなどを発生させることなく安
定的に完全燃焼させ、異常があれば警報をだしたり、燃
焼を停止したりする空燃比監視装置を提供することであ
る。
SUMMARY OF THE INVENTION It is an object of the present invention to calculate the air ratio by gas pressure and air pressure, and when the air-fuel ratio is monitored, improve the numerical accuracy of the calculated air ratio and keep the air-fuel ratio constant. An object of the present invention is to provide an air-fuel ratio monitoring device that keeps and performs stable complete combustion without generating carbon monoxide or soot, and issues an alarm or stops combustion if there is an abnormality.

【0004】[0004]

【課題を解決するための手段】本発明者らは、上記問題
に鑑み鋭意研究した結果、圧力の平均値化の精度を上げ
ることにより、演算空気比の数値精度を上げることがで
き、上記課題を解決できることを見いだして本発明を成
すに到った。
As a result of intensive studies in view of the above problems, the inventors of the present invention can improve the numerical accuracy of the calculated air ratio by increasing the accuracy of averaging the pressure. The present invention has been accomplished by finding that the above can be solved.

【0005】本発明の請求項1の発明は、ガス圧力と空
気圧力とによりガス燃焼装置の空気比を演算して空燃比
を監視するガスバーナの監視装置において、所定時間毎
に検出したガス圧力と空気圧力とのデータを負荷率毎に
設けられた記憶部に記憶し、この記憶部が飽和したとき
演算装置により平均値を算出して空燃比を求め、以降は
ガス圧力と空気圧力の新しい検出データが記憶装置に記
憶される毎に演算装置が移動平均値を算出し、それぞれ
の移動平均値に基づいて空燃比を求めてデータとして出
力することを特徴とするガスバーナの空燃比監視装置で
ある。
According to a first aspect of the present invention, in a gas burner monitoring device for monitoring an air-fuel ratio by calculating an air ratio of a gas combustion device based on a gas pressure and an air pressure, the gas pressure detected every predetermined time The data of air pressure is stored in the storage unit provided for each load factor, and when this storage unit is saturated, the arithmetic unit calculates the average value to obtain the air-fuel ratio, and thereafter, new detection of gas pressure and air pressure is performed. An air-fuel ratio monitoring device for a gas burner, characterized in that an arithmetic unit calculates a moving average value each time data is stored in a storage device, and calculates an air-fuel ratio based on each moving average value and outputs it as data. .

【0006】本発明の請求項2の発明は、ガス圧力と空
気圧力とによりガス燃焼装置の空気比を演算して空燃比
を監視するガスバーナの監視装置において、所定時間毎
に検出したガス圧力と空気圧力とのデータを負荷率毎に
設けられた記憶部に記憶し、この記憶部が飽和したとき
演算装置により平均値を算出して空燃比を求め、以降は
ガス圧力と空気圧力の新しい検出データが記憶装置に記
憶される毎に演算装置が移動平均値を算出し、それぞれ
の移動平均値に基づいて空燃比を求め、この空気比を設
定値と比較して点検信号あるいは異常停止信号を出力す
ることを特徴とするガスバーナの空燃比監視装置であ
る。
According to a second aspect of the present invention, in the gas burner monitoring device for calculating the air ratio of the gas combustion device by the gas pressure and the air pressure to monitor the air-fuel ratio, the gas pressure detected at every predetermined time and The data of air pressure is stored in the storage unit provided for each load factor, and when this storage unit is saturated, the arithmetic unit calculates the average value to obtain the air-fuel ratio, and thereafter, new detection of gas pressure and air pressure is performed. Every time the data is stored in the storage device, the arithmetic unit calculates the moving average value, obtains the air-fuel ratio based on each moving average value, compares this air ratio with the set value, and outputs an inspection signal or abnormal stop signal. It is an air-fuel ratio monitoring device for a gas burner characterized by outputting.

【0007】[0007]

【作用】本発明のガスバーナの空燃比監視装置により、
例えば下記のようにして圧力の平均値化の精度を上げる
ことにより、演算空気比の数値精度を上げることができ
る。 (1)負荷率ごとのガス圧力と空気圧力のデータストッ
ク量を決め、データのストック量が飽和になった時点で
平均値を出力し、その後の入力データはその都度、移動
平均値として出力する。 (2)負荷率0%から100%まで1%ごとに分割され
た101ケの負荷率テーブルを用意する。 (3)制御によるガス用コントロールモータ又は、空気
用コントロールモータの動作中はデータ採取を中止し、
相方のコントロールモータが停止している時にガス圧
力、空気圧力のデータを採取する。 (4)負荷率ごとのデータストックは制御運転時にラン
ダムにファイルされデータストックが飽和した後に空燃
比監視を実行する。
With the air-fuel ratio monitoring device of the gas burner of the present invention,
For example, the numerical accuracy of the calculated air ratio can be improved by increasing the accuracy of averaging the pressure as described below. (1) Determine the data stock amount of gas pressure and air pressure for each load factor, output the average value when the data stock amount becomes saturated, and output the subsequent input data as the moving average value each time. . (2) Prepare 101 load factor tables divided by 1% from 0% to 100%. (3) Data collection is stopped while the control motor for gas or the control motor for air under control is operating,
Data of gas pressure and air pressure are collected when the control motor of the partner is stopped. (4) The data stock for each load factor is randomly filed during control operation, and the air-fuel ratio monitoring is executed after the data stock is saturated.

【0008】[0008]

【実施例】次に本発明を詳細に説明するが、本発明の主
旨を逸脱しない限り実施例に限定されるものではない。
図1は負荷率ごとに用意するファイル、ファイルするデ
ータ量、ガス圧力PG、空気圧力PA 、ガス圧力平均値
Gx、空気圧力平均値PAx、空気比mx などの関係を示
す本発明のガスバーナの空燃比監視装置のシステムの説
明図である。 (1)負荷率ごとに、ガス圧力PG 、空気圧力PA をス
トックするファイルを用意する。例えば、負荷率0%、
1%、2%……100%ごとのファイル、101ケを用
意する。 (2)それぞれの負荷率のファイルにストックするデー
タ量を決める。例えば、100ケのデータ量をファイル
できるテーブルをもち、運転中、ランダムにデータをフ
ァイルしていく。1データに200m秒要するとする
と、100データでは20秒となり、20秒でファイル
が飽和する。 (3)ファイルのデータが飽和した時にガス圧力と空気
圧力の平均値PGx、PAxを出力し、その後は、ファイル
されるデータを含めて移動平均を出力する。 (4)平均値PGx、PAxから空気比mx を演算する。
The present invention will be described in detail below, but the present invention is not limited to the examples without departing from the gist of the present invention.
FIG. 1 is a book showing the relationship among files prepared for each load factor, the amount of data to be filed, gas pressure P G , air pressure P A , gas pressure average value P Gx , air pressure average value P Ax , air ratio m x, etc. It is explanatory drawing of the system of the air-fuel ratio monitoring apparatus of the gas burner of invention. (1) Prepare a file for stocking gas pressure P G and air pressure P A for each load factor. For example, 0% load factor,
1%, 2% …… Prepare 101 files for every 100%. (2) Determine the amount of data to be stocked in each load factor file. For example, it has a table capable of storing a data amount of 100 pieces, and data is randomly filed during operation. If one data takes 200 msec, 100 data takes 20 sec, and the file is saturated in 20 sec. (3) When the data in the file is saturated, the average values P Gx and P Ax of the gas pressure and the air pressure are output, and thereafter, the moving average including the filed data is output. (4) The air ratio m x is calculated from the average values P Gx and P Ax .

【0009】図2は本発明で用いる燃焼装置の説明図
で、バーナ本体1、送風機2、エアダンパー3、コント
ロールモータ4、機械的リンケージ7、燃料制御弁5、
コントロールモータ6などからなる。8はガス圧力セン
サー、9は空気圧力センサーである。
FIG. 2 is an explanatory view of a combustion apparatus used in the present invention, which includes a burner body 1, a blower 2, an air damper 3, a control motor 4, a mechanical linkage 7, a fuel control valve 5,
The control motor 6 is included. Reference numeral 8 is a gas pressure sensor, and 9 is an air pressure sensor.

【0010】図3に空気比m演算のフロー図を示す。 (1)負荷率X(%)に応じたガス圧力PGX、空気圧力
AXの基準値g、aをそれぞれマイコンに記憶してお
く。 (2)空気側にトラブルが発生した場合には、PGX、P
AXともに変化し、ガス側にトラブルが発生した場合に
は、PAXは変化せず、PGXが変化するため、PAXにより
次式(1) により空気比maを演算すると共に、PGXによ
り次式(2) により空気比mgを演算する。 ma=K・[(PAX/a)×{0.6+0.4×(PAX/a)}]0.5 (1) K:適正空気比(定数) PAX:空気圧力平均値(mmH2 O) a:各負荷における基準PA 値(mmH2 O) |PAX−a|/X<0.06の場合 mg=K/(PGX/g)2 (2) K:適正空気比(定数) PGX:ガス圧力平均値(mmH2 O) g:各負荷における基準PG 値(mmH2 O)
FIG. 3 shows a flow chart for calculating the air ratio m. (1) The reference values g and a of the gas pressure P GX and the air pressure P AX according to the load factor X (%) are stored in the microcomputer. (2) If a trouble occurs on the air side, P GX , P
AX both changed, when a trouble to the gas side occurs, P AX does not change, because the P GX changes, as well as calculating the air ratio ma by the following equation (1) by P AX, the P GX The air ratio mg is calculated by the following equation (2). ma = K ・ [(P AX /a)×{0.6+0.4×(P AX / a)}] 0.5 (1) K: Proper air ratio (constant) P AX : Air pressure average value (mmH 2 O ) A: Reference P A value (mmH 2 O) for each load | P AX −a | / X <0.06 mg = K / (P GX / g) 2 (2) K: Proper air ratio (constant) ) P GX: gas pressure average value (mmH 2 O) g: the reference P G value in each load (mmH 2 O)

【0011】(3)さらに、maとmgとを比較してガ
ス側のトラブルか空気側のトラブルかを判断し、maと
mgのうちK(適正空気比)に対して変化量の大きい方
をm(空気比)とする。 (4)mが1.135≦m≦1.68の場合は正常。 (5)mが1.05≦m≦1.135又は1.68≦m
≦1.9の場合は点検サインを出力する。 (6)mがm<1.05又はm>1.9の場合は異常サ
インを出力し燃焼停止(安全停止)する。 (7)表示は、mか、または次式により演算したO2
(%)を表示する。 O2 (%) =21×[(m−1)/{m−(0.21−(1
/0.79×f))}] f:常数(理論乾き燃焼ガス量)
(3) Further, ma and mg are compared to judge whether the trouble is on the gas side or the trouble on the air side, and one of ma and mg which has a larger variation amount with respect to K (appropriate air ratio) is determined. m (air ratio). (4) Normal when m is 1.135 ≦ m ≦ 1.68. (5) m is 1.05 ≦ m ≦ 1.135 or 1.68 ≦ m
If ≤1.9, the inspection sign is output. (6) When m is m <1.05 or m> 1.9, an abnormal sign is output and combustion is stopped (safety stop). (7) Display is m or O 2 calculated by the following formula
(%) Is displayed. O 2 (%) = 21 × [(m-1) / {m- (0.21- (1
/0.79×f))}] f: constant (theoretical dry combustion gas amount)

【0012】上記maやmgを演算するために用いた演
算式は一つの代表例であり、燃焼装置の形状や構造の違
いにより、演算式は異なる。またPA やPG は差圧とし
てとらえることもできるが、その時も上記演算式は異な
る。
The arithmetic expression used to calculate ma and mg is a typical example, and the arithmetic expression differs depending on the shape and structure of the combustion device. Further, P A and P G can be regarded as a differential pressure, but at that time, the above arithmetic expression is different.

【0013】[0013]

【発明の効果】本発明のガスバーナの空燃比監視装置
は、ガス圧力と、空気圧力とにより空気比を演算し、空
燃比を監視する時、負荷率毎のガス圧力と空気圧力のデ
ータストック量を決め、制御運転時にデータをランダム
にファイルし、ストック量が飽和した時点で平均値を算
出し、その後入力データに基づいて移動平均値を算出す
るので、圧力の平均値化の精度を上げ、演算空気比の数
値精度を上げることができ、この結果、燃焼ガス中のO
2 やCO2 等を分析するためのセンサーを使用すること
なく、空燃比を一定に保ち易くなり、COやすすなどを
発生させることなく安定的に完全燃焼させることができ
る上、異常があれば警報をだしたり、燃焼を停止したり
することができる。本発明のガスバーナの空燃比監視装
置は安価で簡単であり産業上の利用価値が高い。
The gas burner air-fuel ratio monitor of the present invention calculates the air ratio from the gas pressure and the air pressure, and when monitoring the air-fuel ratio, the data stock amount of the gas pressure and the air pressure for each load factor. , The data is randomly filed during control operation, the average value is calculated when the stock amount is saturated, and then the moving average value is calculated based on the input data, so the accuracy of averaging pressure is increased, The numerical accuracy of the calculated air ratio can be increased, and as a result, the O
Without using a sensor for analyzing 2 or CO 2 or the like, easily keeping the air-fuel ratio constant, on which can be stably complete combustion without causing such as CO and soot, if any abnormality It is possible to give an alarm and stop combustion. The air-fuel ratio monitoring device for a gas burner of the present invention is inexpensive, simple, and has high industrial utility value.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明のガスバーナの空燃比監視装置のシス
テムの説明図である。
FIG. 1 is an explanatory diagram of a system of an air-fuel ratio monitoring device for a gas burner according to the present invention.

【図2】 本発明で用いる燃焼装置の説明図を示す。FIG. 2 shows an explanatory view of a combustion device used in the present invention.

【図3】 空気比m演算のフロー図である。FIG. 3 is a flowchart for calculating an air ratio m.

【符号の説明】[Explanation of symbols]

G ガス圧力 PA 空気圧力 PGX ガス圧力平均値 PAX 空気圧力平均値 X 負荷率 g ガス圧力の基準値 a 空気圧力の基準値 ma、mg、m 空気比 K 適正空気比 f 常数 1 バーナ本体 2 送風機 3 エアダンパー 4、6 コントロールモータ 5 ガス制御弁 7 機械的リンケージ 8 ガス圧力センサ− 9 空気圧力センサ−P G Gas pressure P A Air pressure P GX Gas pressure average value P AX Air pressure average value X Load factor g Gas pressure reference value a Air pressure reference value ma, mg, m Air ratio K Proper air ratio f Constant 1 burner Main unit 2 Blower 3 Air damper 4, 6 Control motor 5 Gas control valve 7 Mechanical linkage 8 Gas pressure sensor-9 Air pressure sensor-

───────────────────────────────────────────────────── フロントページの続き (72)発明者 内田 英樹 大阪府守口市京阪本通2−18 三洋電機株 式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideki Uchida 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 ガス圧力と空気圧力とによりガス燃焼装
置の空気比を演算して空燃比を監視するガスバーナの監
視装置において、所定時間毎に検出したガス圧力と空気
圧力とのデータを負荷率毎に設けられた記憶部に記憶
し、この記憶部が飽和したとき演算装置により平均値を
算出して空燃比を求め、以降はガス圧力と空気圧力の新
しい検出データが記憶装置に記憶される毎に演算装置が
移動平均値を算出し、それぞれの移動平均値に基づいて
空燃比を求めてデータとして出力することを特徴とする
ガスバーナの空燃比監視装置。
1. A gas burner monitoring device for monitoring an air-fuel ratio by calculating an air ratio of a gas combustion device based on a gas pressure and an air pressure. Data of the gas pressure and the air pressure detected every predetermined time is used as a load factor. It is stored in a storage unit provided for each, and when this storage unit is saturated, an average value is calculated by an arithmetic unit to obtain an air-fuel ratio, and thereafter, new detection data of gas pressure and air pressure is stored in the storage unit. An air-fuel ratio monitoring device for a gas burner, wherein a computing device calculates a moving average value for each time, and an air-fuel ratio is calculated based on each moving average value and output as data.
【請求項2】 ガス圧力と空気圧力とによりガス燃焼装
置の空気比を演算して空燃比を監視するガスバーナの監
視装置において、所定時間毎に検出したガス圧力と空気
圧力とのデータを負荷率毎に設けられた記憶部に記憶
し、この記憶部が飽和したとき演算装置により平均値を
算出して空燃比を求め、以降はガス圧力と空気圧力の新
しい検出データが記憶装置に記憶される毎に演算装置が
移動平均値を算出し、それぞれの移動平均値に基づいて
空燃比を求め、この空気比を設定値と比較して点検信号
あるいは異常停止信号を出力することを特徴とするガス
バーナの空燃比監視装置。
2. A gas burner monitoring device for monitoring an air-fuel ratio by calculating an air ratio of a gas combustion device based on a gas pressure and an air pressure. The load factor is a data of the gas pressure and the air pressure detected at every predetermined time. It is stored in a storage unit provided for each, and when this storage unit is saturated, an average value is calculated by an arithmetic unit to obtain an air-fuel ratio, and thereafter, new detection data of gas pressure and air pressure is stored in the storage unit. A gas burner characterized by calculating a moving average value for each unit, obtaining an air-fuel ratio based on each moving average value, comparing this air ratio with a set value, and outputting an inspection signal or an abnormal stop signal. Air-fuel ratio monitoring device.
JP13931393A 1993-05-19 1993-05-19 Gas burner equipment Expired - Fee Related JP3181142B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13931393A JP3181142B2 (en) 1993-05-19 1993-05-19 Gas burner equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13931393A JP3181142B2 (en) 1993-05-19 1993-05-19 Gas burner equipment

Publications (2)

Publication Number Publication Date
JPH06331140A true JPH06331140A (en) 1994-11-29
JP3181142B2 JP3181142B2 (en) 2001-07-03

Family

ID=15242398

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13931393A Expired - Fee Related JP3181142B2 (en) 1993-05-19 1993-05-19 Gas burner equipment

Country Status (1)

Country Link
JP (1) JP3181142B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999005454A1 (en) * 1997-07-28 1999-02-04 Autoflame Engineering Limited Burner control installation
CN107238101A (en) * 2017-07-24 2017-10-10 西安热工研究院有限公司 A kind of wind powder mixing temperature and flow velocity secondary regulation system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105242701B (en) * 2015-11-27 2018-07-10 深圳市深水宝安水务集团有限公司 The gas concentration control system and method for a kind of chlorine dioxide generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999005454A1 (en) * 1997-07-28 1999-02-04 Autoflame Engineering Limited Burner control installation
CN107238101A (en) * 2017-07-24 2017-10-10 西安热工研究院有限公司 A kind of wind powder mixing temperature and flow velocity secondary regulation system

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