JPH06331138A - Device for monitoring air ratio of gas burner - Google Patents
Device for monitoring air ratio of gas burnerInfo
- Publication number
- JPH06331138A JPH06331138A JP13991493A JP13991493A JPH06331138A JP H06331138 A JPH06331138 A JP H06331138A JP 13991493 A JP13991493 A JP 13991493A JP 13991493 A JP13991493 A JP 13991493A JP H06331138 A JPH06331138 A JP H06331138A
- Authority
- JP
- Japan
- Prior art keywords
- air
- air ratio
- ratio
- pressure
- gas
- 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
- 238000012544 monitoring process Methods 0.000 title claims abstract description 13
- 238000007689 inspection Methods 0.000 claims abstract description 10
- 239000000446 fuel Substances 0.000 claims description 18
- 238000002485 combustion reaction Methods 0.000 claims description 15
- 230000005856 abnormality Effects 0.000 claims description 8
- 238000012806 monitoring device Methods 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 42
- 239000000567 combustion gas Substances 0.000 description 3
- 108010014173 Factor X Proteins 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 241001385733 Aesculus indica Species 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Landscapes
- Regulation And Control Of Combustion (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はガスバーナの空気比の監
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高精
度で監視し、安全に正常燃焼を行うと共に、異常がある
場合は、点検、異常などのサインを出力する空燃比監視
システムを有するガスバーナの空気比の監視装置に関す
るものでる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for monitoring an air ratio of a gas burner, and more specifically, it monitors the air ratio of a combustion device for a gas boiler, a gas absorption chiller-heater or the like with high accuracy to ensure safety. The present invention relates to a device for monitoring the air ratio of a gas burner, which has an air-fuel ratio monitoring system that outputs a sign of inspection, abnormality, etc. while performing normal combustion at the same time.
【０００２】[0002]
【従来の技術】従来のガスバーナには空燃比を監視する
システムはほとんどなく管理者が点検によりチェックす
るか、燃焼状態を検知する燃焼検知センサー（例えばサ
ーモカップル）の出力に応じて送風機による燃焼用空気
流量を制御していた（特公平３−５９３３２号公報等）
が、種々の原因により空燃比がずれることがあり、大き
くずれた場合には、未燃ガスが多量に排出されて危険で
ある。排ガス分析計を使用し、燃焼ガス中のＯ2 やＣＯ
を計測することにより空燃比の監視を行う方法もある
が、酸素センサーなどは高価で、保守点検を要し、また
寿命が短いという問題がある。空燃比異常の発生を防ぐ
燃焼装置が種々提案されているが（特開昭６２−２５２
８２６号公報、特公平４−６７０９１号公報等）、空燃
比補正により燃料の供給量が変化して燃焼部で所定の熱
量が得られない、制御が複雑になる、高価になるなどの
問題があった。2. Description of the Related Art Conventional gas burners have almost no system for monitoring the air-fuel ratio, and an administrator checks the system by inspecting it, or for combustion by a blower according to the output of a combustion detection sensor (for example, a thermocouple) that detects the combustion state. The air flow rate was controlled (Japanese Patent Publication No. 3-59332, etc.)
However, the air-fuel ratio may shift due to various causes, and if it greatly deviates, a large amount of unburned gas is discharged, which is dangerous. Using an exhaust gas analyzer, O 2 and CO in combustion gas
Although there is also a method of monitoring the air-fuel ratio by measuring, the oxygen sensor and the like are expensive, require maintenance and inspection, and have a short life. Various combustion devices have been proposed for preventing the occurrence of abnormal air-fuel ratio (Japanese Patent Laid-Open No. 62-252
No. 826, Japanese Patent Publication No. 4-67091, etc.), there is a problem that the amount of fuel supply changes due to air-fuel ratio correction and a predetermined amount of heat cannot be obtained in the combustion section, control becomes complicated, and cost becomes high. there were.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、燃焼
ガス中のＯ2 やＣＯ等を分析するためのセンサーを使用
することなく、空気供給側に故障が発生した場合でも、
ガス供給側に故障が発生した場合でも又は同時に発生し
た場合でも、空燃比が一定に制御されていることを高精
度で監視し、異常がある場合は、点検、異常などのサイ
ンを出力する空燃比監視システムを有する安価で簡単な
ガスバーナの空気比の監視装置を提供することである。It is an object of the present invention to use a sensor for analyzing O 2 and CO in combustion gas, even if a failure occurs on the air supply side, without using a sensor.
Even if a failure occurs on the gas supply side or at the same time, it monitors with high accuracy that the air-fuel ratio is constantly controlled, and if there is an abnormality, it outputs a sign such as inspection or abnormality. (EN) An inexpensive and simple gas burner air ratio monitoring device having a fuel ratio monitoring system.
【０００４】[0004]
【課題を解決するための手段】上記の問題に鑑み本発明
者らが鋭意研究した結果、ガス圧力の変位量（基準値に
対する変化量）と空気圧力の変位量（基準値に対する変
化量）とを算出し、荷重平均として、空気比を演算する
ことにより高精度で空気比を監視できるので、上記課題
を解決することができることを見いだして本発明をなす
に到った。As a result of intensive studies conducted by the present inventors in view of the above problems, as a result, a displacement amount of gas pressure (change amount with respect to a reference value) and a displacement amount of air pressure (change amount with respect to a reference value) Therefore, the present invention can be achieved by finding that the above problem can be solved because the air ratio can be monitored with high accuracy by calculating and calculating the air ratio as the weighted average.
【０００５】本発明の請求項１の発明は、ガス圧力（Ｐ
G ）と空気圧力（ＰA ）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空気比の監視
装置において、ガス圧力が変化した場合には、ガス圧力
（ＰG ）に基づいて空気比を算出し、空気圧力が変化し
た場合には、空気圧力（ＰA ）に基づいて空気比を算出
し、かつ、各空気比から荷重平均としての空気比を算出
する演算器と、この演算器が算出した空気比を記憶する
記憶装置とを備えたことを特徴とするガスバーナの空気
比の監視装置である。According to the first aspect of the present invention, the gas pressure (P
G ) and the air pressure (P A ) calculate the air ratio of the gas combustion device to monitor the air-fuel ratio. In the air ratio monitoring device of the gas burner, when the gas pressure changes, the gas pressure (P G ) An arithmetic unit for calculating the air ratio based on the above, and when the air pressure changes, the air ratio is calculated based on the air pressure (P A ) and the air ratio as a weighted average is calculated from each air ratio. And a storage device for storing the air ratio calculated by the arithmetic unit, which is an air ratio monitoring device for a gas burner.
【０００６】本発明の請求項２の発明は、ガス圧力（Ｐ
G ）と空気圧力（ＰA ）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空気比の監視
装置において、ガス圧力が変化した場合には、ガス圧力
（ＰG ）に基づいて空気比を算出し、空気圧力が変化し
た場合には、空気圧力（ＰA ）に基づいて空気比を算出
し、かつ、各空気比から荷重平均としての空気比を算出
する演算器と、この演算器が算出した空気比を記憶する
記憶装置と、この演算器が算出した空気比と設定値とを
比較して正常、点検及び異常を出力する表示器とを備え
たことを特徴とするガスバーナの空気比の監視装置であ
る。According to the second aspect of the present invention, the gas pressure (P
G ) and the air pressure (P A ) calculate the air ratio of the gas combustion device to monitor the air-fuel ratio. In the air ratio monitoring device of the gas burner, when the gas pressure changes, the gas pressure (P G ) An arithmetic unit for calculating the air ratio based on the above, and when the air pressure changes, the air ratio is calculated based on the air pressure (P A ) and the air ratio as a weighted average is calculated from each air ratio. And a storage device that stores the air ratio calculated by the calculator, and an indicator that compares the air ratio calculated by the calculator with a set value and outputs normality, inspection, and abnormality. This is a device for monitoring the air ratio of the gas burner.
【０００７】[0007]
【作用】ガス燃焼装置のガスバーナの空気比の監視を下
記のように行う。 （１）運転開始前の試運転調整時に、排ガス分析をしな
がら、空燃比調整を行うが、この時に各負荷に応じた適
正なるガス圧力（ＰG ）と空気圧力（ＰA ）との関係を
マイコンにて記憶しておく。 （２）運転開始後は、調整時に記憶したガス圧力（Ｐ
G ）、空気圧力（ＰA ）をベースデータとして空燃比監
視を行い、空燃比が変化するような何らかの原因があっ
た場合には、ガス圧力（ＰG ）または空気圧力（ＰA ）
に基準値よりズレが生じるためこのズレ量より演算して
空気比を算出する。 （３）まず、ガス圧力（ＰG ）を用いて空気比（ｍｇ）
を演算する。次に、空気圧力（ＰA ）を用いて空気比
（ｍａ）を演算する。 （４）ガス圧力（ＰG ）および空気圧力（ＰA ）の基準
値よりのズレ量の大きさに応じて空気比（ｍｇ）と空気
比（ｍａ）との荷重平均をとり、空気比（ｍ）を算出す
る。 （５）そして、空気比（ｍ）を用いて空気比監視を行
う。空気比（ｍ）と設定値とを比較して正常サイン、点
検サイン及び異常サインを出力する。Operation: The air ratio of the gas burner of the gas combustion device is monitored as follows. (1) when commissioning before the start of operation, while the exhaust gas analysis, performs the air-fuel ratio adjustment, the relationship between the proper Naru gas pressure corresponding to the load (P G) and air pressure (P A) when the It is stored in the microcomputer. (2) After the start of operation, the gas pressure (P
G), performs air-fuel ratio monitoring air pressure to (P A) as the base data, if there is some reason, such as the air-fuel ratio is changed, the gas pressure (P G) or air pressure (P A)
Since there is a deviation from the reference value, the air ratio is calculated by calculating from this deviation amount. (3) First, the air ratio using the gas pressure (P G) (mg)
Is calculated. Next, the air ratio (ma) is calculated using the air pressure (P A ). (4) takes the weighted average of the gas pressure (P G) and air pressure (P A) the air ratio depending on the magnitude of the shift amount of the reference value of (mg) air ratio and (ma), air ratio ( m) is calculated. (5) Then, the air ratio is monitored using the air ratio (m). The air ratio (m) is compared with the set value, and a normal sign, an inspection sign and an abnormal sign are output.
【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は空気比ｍ演算のフロー図である。 ｇ：負荷ごとに記憶したＰG の基準値。 ａ：負荷ごとに記憶したＰA の基準値。 Ｋ：基準となる設定（調整値）空気比。 （１）初期調整時に基準値を設定する。 ガス圧力ＰG は負荷率Ｘに応じた基準値ｇとして割りつ
けられる。空気圧力ＰA は負荷率Ｘに応じた基準値ａと
して割りつけられる。調整された空気比を定数Ｋとす
る。 （２）トラブルが発生した場合には、ガス圧力ＰG 及び
空気圧力ＰA はそれぞれの基準値ｇ、ａに対して変化す
るためこの変化量をとらえて空気比を演算する。 （３）まず、ＰG よりｍｇを演算する。 代表的な計算式としては次式（イ）を用いる。 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 flow chart of calculating the air ratio m. g: Reference value of P G stored for each load. a: Reference value of P A stored for each load. K: reference setting (adjustment value) air ratio. (1) Set a reference value during initial adjustment. The gas pressure P G is assigned as a reference value g according to the load factor X. The air pressure P A is assigned as a reference value a according to the load factor X. Let the adjusted air ratio be a constant K. (2) When a trouble occurs, the gas pressure P G and the air pressure P A change with respect to the respective reference values g and a, so the air ratio is calculated by catching this change amount. (3) First, mg is calculated from P G. The following formula (a) is used as a typical calculation formula.
【０００９】（４）次にＰA よりｍａを演算する。 代表的な計算式としては次式（ロ）を用いる。 ｍａ＝Ｋ・［ＰA ／ａ×｛０．６＋０．４×（ＰA ／ａ）｝］0.5 （ロ） （５）ＰG 、ＰA それぞれの変化量の大きさに応じて次
式（ハ）を用いて荷重平均して空気比ｍを算出する。 m= mg×[｜PG−g｜/ (｜PG−g｜＋ ｜PA−a｜)]＋ma×[ ｜PA−a｜/( ｜PG−g｜ ＋ ｜PA−a｜)] （ハ） （６）算出された空気比ｍをもって空燃比監視を行い、
点検サイン及び異常サインを出力する。 例えば、１．１３５≦ｍ≦１．６８ 正常サイ
ン １．０５ ＜ｍ＜１．１３５あるいは１．６８ ＜ｍ＜
１．９にて点検サイン、ｍ≦１．０５あるいは１．９
≦ｍにて異常サインを出力する。(4) Next, ma is calculated from P A. The following formula (b) is used as a typical calculation formula. ma = K · [P A /a×{0.6+0.4×(P A / a)}] 0.5 (b) (5) Depending on the magnitude of the change amounts of P G and P A , the following equation ( (C) is used to calculate the air ratio m by weighted averaging. m = mg × [| P G −g | / (| P G −g | + | P A −a |)] + ma × [| P A −a | / (| P G −g | + | P A − a |)] (C) (6) Perform air-fuel ratio monitoring with the calculated air ratio m,
Outputs inspection and abnormality signs. For example, 1.135 ≤ m ≤ 1.68 normal signature 1.05 <m <1.135 or 1.68 <m <
Inspection sign at 1.9, m ≦ 1.05 or 1.9
Output an abnormal sign when ≤m.
【００１０】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.
【００１１】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、燃料ガス５、ガス制御弁６、ガス圧力
センサ−７、空気圧力センサ−８などからなり、ガス圧
力センサー７はガス制御弁６の下流側のガス圧力ＰG を
検出し、空気圧力センサー８はエアダンパ３下流側のバ
ーナ本体１の風箱内の空気圧力ＰA を検出し、信号を出
力する。ガス圧力センサ−７と空気圧力センサ−８には
信頼性の高い市販の微圧センサーを使用した。FIG. 2 is an explanatory view of a combustion device used in the present invention, which includes a burner body 1, a blower 2, an air damper 3, a control motor 4, a fuel gas 5, a gas control valve 6, a gas pressure sensor 7, and an air pressure sensor. The gas pressure sensor 7 detects the gas pressure P G on the downstream side of the gas control valve 6, and the air pressure sensor 8 detects the air pressure P A in the wind box of the burner body 1 on the downstream side of the air damper 3. It detects and outputs a signal. As the gas pressure sensor-7 and the air pressure sensor-8, commercially available highly reliable low pressure sensors were used.
【００１２】[0012]
【発明の効果】本発明のガスバーナの空気比の監視装置
は、燃焼ガス中のＯ2 やＣＯ等を分析するためのセンサ
ーを使用することなく、空気供給側に故障が発生した場
合でも、ガス供給側に故障が発生した場合でも、又は同
時に発生した場合でも、空燃比が一定に制御されている
ことを高精度で監視し、異常がある場合は、点検、異常
などのサインを出力できる。本発明のガスバーナの空気
比の監視装置は安価で簡単であり、保守点検が容易であ
るという特徴があるので産業上の利用価値が高い。The device for monitoring the air ratio of the gas burner according to the present invention does not use a sensor for analyzing O 2 or CO in the combustion gas, even if a failure occurs on the air supply side, Whether or not a failure occurs on the supply side or at the same time, it can be monitored with high accuracy that the air-fuel ratio is controlled to be constant, and if there is an abnormality, a sign of inspection or abnormality can be output. The air ratio monitoring device of the gas burner of the present invention is inexpensive, simple, and easy to maintain and inspect, and therefore has high industrial utility value.
【図１】 空気比ｍ演算のフロー図である。FIG. 1 is a flowchart for calculating an air ratio m.
【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.
ＰG ガス圧力 ＰA 空気圧力 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 基準となる設定空気比 １ バーナ本体 ２ 送風機 ３ エアダンパー ４ コントロールモータ ５ 燃料ガス ６ ガス制御弁 ７ ガス圧力センサ− ８ 空気圧力センサ−P G Gas pressure P A Air pressure X Load factor g Gas pressure reference value a Air pressure reference value ma, mg, m Air ratio K Reference air ratio 1 Burner body 2 Blower 3 Air damper 4 Control motor 5 Fuel Gas 6 Gas control valve 7 Gas pressure sensor-8 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丁目18番地 三洋 電機株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hideki Uchida 2-18 Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Electric Co., Ltd.
Claims (2)
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
るガスバーナの空気比の監視装置において、ガス圧力が
変化した場合には、ガス圧力（ＰG ）に基づいて空気比
を算出し、空気圧力が変化した場合には、空気圧力（Ｐ
A ）に基づいて空気比を算出し、かつ、各空気比から荷
重平均としての空気比を算出する演算器と、この演算器
が算出した空気比を記憶する記憶装置とを備えたことを
特徴とするガスバーナの空気比の監視装置。1. A monitoring device for an air ratio of the gas burner to monitor the air-fuel ratio by calculating the air ratio of the gas combustion apparatus with a gas pressure (P G) air pressure and (P A), if the gas pressure is changed The air ratio is calculated based on the gas pressure (P G ), and when the air pressure changes, the air pressure (P
A ) calculating an air ratio based on A ) and calculating an air ratio as a weighted average from each air ratio, and a storage device for storing the air ratio calculated by the calculator. An air ratio monitoring device for a gas burner.
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
るガスバーナの空気比の監視装置において、ガス圧力が
変化した場合には、ガス圧力（ＰG ）に基づいて空気比
を算出し、空気圧力が変化した場合には、空気圧力（Ｐ
A ）に基づいて空気比を算出し、かつ、各空気比から荷
重平均としての空気比を算出する演算器と、この演算器
が算出した空気比を記憶する記憶装置と、この演算器が
算出した空気比と設定値とを比較して正常、点検及び異
常を出力する表示器とを備えたことを特徴とするガスバ
ーナの空気比の監視装置。2. A monitoring device for an air ratio of the gas burner to monitor the air-fuel ratio by calculating the air ratio of the gas combustion apparatus with a gas pressure (P G) air pressure and (P A), if the gas pressure is changed The air ratio is calculated based on the gas pressure (P G ), and when the air pressure changes, the air pressure (P
A ) The air ratio is calculated based on A ), and the air ratio as the weighted average is calculated from each air ratio, the storage device that stores the air ratio calculated by this calculator, and this calculator An apparatus for monitoring an air ratio of a gas burner, comprising: an indicator for comparing the air ratio with a set value and outputting normality, inspection and abnormality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05139914A JP3112600B2 (en) | 1993-05-20 | 1993-05-20 | Gas burner air ratio monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05139914A JP3112600B2 (en) | 1993-05-20 | 1993-05-20 | Gas burner air ratio monitoring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06331138A true JPH06331138A (en) | 1994-11-29 |
| JP3112600B2 JP3112600B2 (en) | 2000-11-27 |
Family
ID=15256591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05139914A Expired - Fee Related JP3112600B2 (en) | 1993-05-20 | 1993-05-20 | Gas burner air ratio monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3112600B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7935406B2 (en) | 2007-05-03 | 2011-05-03 | Pilepro, Llc | Arrangement of multiple sheet pile components and welding profile therefor |
| JP2022179847A (en) * | 2021-05-24 | 2022-12-06 | 株式会社ヒラカワ | Combustion control method and combustion control device |
-
1993
- 1993-05-20 JP JP05139914A patent/JP3112600B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7935406B2 (en) | 2007-05-03 | 2011-05-03 | Pilepro, Llc | Arrangement of multiple sheet pile components and welding profile therefor |
| US8088469B2 (en) | 2007-05-03 | 2012-01-03 | Pilepro, Llc | Arrangement of multiple sheet pile components and welding profile therefor |
| JP2022179847A (en) * | 2021-05-24 | 2022-12-06 | 株式会社ヒラカワ | Combustion control method and combustion control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3112600B2 (en) | 2000-11-27 |
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