JPH0619232B2 - Exhaust gas detector mounting structure for heaters - Google Patents
Exhaust gas detector mounting structure for heatersInfo
- Publication number
- JPH0619232B2 JPH0619232B2 JP61020571A JP2057186A JPH0619232B2 JP H0619232 B2 JPH0619232 B2 JP H0619232B2 JP 61020571 A JP61020571 A JP 61020571A JP 2057186 A JP2057186 A JP 2057186A JP H0619232 B2 JPH0619232 B2 JP H0619232B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- combustion
- burner
- heat exchanger
- temperature
- 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
Links
- 238000002485 combustion reaction Methods 0.000 claims description 35
- 230000005856 abnormality Effects 0.000 claims description 23
- 238000010276 construction Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 71
- 230000002159 abnormal effect Effects 0.000 description 12
- 239000000567 combustion gas Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
- F23N2231/20—Warning devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Regulation And Control Of Combustion (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は燃焼の異常を検出する排ガス検出器の取付構
造に関するものである。The present invention relates to an exhaust gas detector mounting structure for detecting combustion abnormality.
暖房器にガス検出器を取付け、暖房器に使用するバーナ
の異常を検出する構成として出願人の発明である特公昭
４８−２８２２５号がある。一般にガス検出器は使用可
能温度範囲がせまく、高温度の燃焼ガスを直接検出ガス
として利用できないものであり、前記特公昭４８−２８
２２５号では暖房器の枠体の下部空気供給孔近傍にガス
検出器を取付けている。この取付け構造であるとバーナ
の異常燃焼によって暖房器を使用する室内の空気が相当
よごれてから始めて検出されるものであり、バーナの異
常燃焼を直接検出することができなかった。従って現在
はバーナの異常燃焼を比較的早く知ることができるフレ
ーム電流や炎を含む特定部位の温度によって関接的に知
る方法が主流となっている。Japanese Patent Publication No. 48-22525, which is the invention of the applicant, has a configuration in which a gas detector is attached to a heater to detect an abnormality of a burner used in the heater. Generally, a gas detector has a narrow usable temperature range and cannot use a high-temperature combustion gas directly as a detection gas.
In No. 225, a gas detector is attached near the lower air supply hole of the frame of the heater. With this mounting structure, the abnormal combustion of the burner is detected only when the air in the room where the heater is used is considerably polluted, and the abnormal combustion of the burner cannot be directly detected. Therefore, at present, the mainstream method is to know the abnormal combustion of the burner relatively quickly by using the flame current and the temperature of a specific portion including the flame.
ところでフレーム電流や温度によって異常燃焼を検出す
る装置は特定条件によって発生する異常燃焼には比較的
良好に対応できるものの空気汚れと酸素不足などの様に
条件が複合した場合、異常燃焼が起き始めるフレーム電
流や温度が他の場合と異なる時が多く、すべての異常燃
焼に対応することはできなかった。この発明は排ガス検
出器の取付け構造を工夫することによって異常燃焼の開
始を直接検出できる様にしたものである。By the way, although the device that detects abnormal combustion based on flame current and temperature can relatively well cope with abnormal combustion that occurs under specific conditions, when conditions such as air pollution and oxygen shortage are compounded, abnormal combustion begins to occur. In many cases, the current and temperature were different from other cases, and it was not possible to deal with all abnormal combustion. The present invention makes it possible to directly detect the start of abnormal combustion by devising the mounting structure of the exhaust gas detector.
この発明は上記課題を解決する為に、燃焼ガスを直接検
出して異常を検出するもので、バーナ１の上方に取付け
た排ガス補集器２と、補集した燃焼排ガスと室内空気と
の熱交換器３と、補集した燃焼排ガスの排ガス放出口４
とを連続して配置し、熱交換器３から排ガス放出口４に
至る排ガス流路５には温度センサー７と排ガス異常検出
器６とを取付けると共に、バーナ１の燃焼部及び熱交換
部に室内空気を送る対流ファン８を設け、該対流ファン
８は回転数可変タイプで構成して空気流を熱交換器３に
も導き、回転数を可変する対流ファンによって熱交換器
３の出口の排ガス温度を前記温度センサー７の信号で一
定に保つことを特徴とする暖房器の排ガス検出器取付構
造としたものである。In order to solve the above-mentioned problems, the present invention directly detects combustion gas to detect an abnormality. The exhaust gas collector 2 installed above the burner 1 and the collected combustion exhaust gas and indoor heat Exchanger 3 and exhaust gas discharge port 4 for collected combustion exhaust gas
And a temperature sensor 7 and an exhaust gas abnormality detector 6 are installed in the exhaust gas flow path 5 extending from the heat exchanger 3 to the exhaust gas discharge port 4, and the burner 1 and the heat exchange portion are indoors. A convection fan 8 for sending air is provided, and the convection fan 8 is of a variable rotation speed type to guide the air flow to the heat exchanger 3 and the exhaust gas temperature at the outlet of the heat exchanger 3 is changed by the convection fan having a variable rotation speed. Is kept constant by the signal of the temperature sensor 7, and is an exhaust gas detector mounting structure for a heater.
排ガス異常検出器６は高温条件のもとで使用できるもの
と比べて、常温条件で使用する異常検出器の方が安価で
ある。しかし常温の室内空気を直接検出する方法では検
出おくれをさけることができない。この発明では燃焼排
気ガスを直接検出して異常を検出するものであり、排ガ
ス補集器２から排ガス放出口４に至る排ガス流路５に、
熱交換器３と温度センサー７と排ガス異常検出器６を取
付け、熱交換器３に室内空気用の対流ファン８による室
内空気を吹き付けており、熱交換器３内で排気ガスを冷
却し、低温となった燃焼排ガス中のＨＣガスやＣＯガス
や酸素量などを監視するものである。As for the exhaust gas abnormality detector 6, the abnormality detector used under normal temperature conditions is less expensive than the one that can be used under high temperature conditions. However, the detection delay cannot be avoided by the method of directly detecting the room air at room temperature. In the present invention, the combustion exhaust gas is directly detected to detect an abnormality, and in the exhaust gas flow path 5 from the exhaust gas collector 2 to the exhaust gas discharge port 4,
The heat exchanger 3, the temperature sensor 7, and the exhaust gas abnormality detector 6 are attached, and the indoor air is blown to the heat exchanger 3 by the convection fan 8 for indoor air. This is to monitor the amount of HC gas, CO gas, oxygen, etc. in the combustion exhaust gas.
対流ファン８には回転数可変タイプを用い、温度センサ
ー７の信号で、該温度センサー７が所定温度となるよう
に回転数を変更し、排ガス異常検出器６の検出精度を高
めている。また高温の燃焼ガスの時には送風量が大とな
り、低温の時には送風量が小になり、暖房器として好ま
しい送風器となる。A variable rotation speed type is used for the convection fan 8, and the rotation speed is changed by the signal of the temperature sensor 7 so that the temperature sensor 7 reaches a predetermined temperature, and the detection accuracy of the exhaust gas abnormality detector 6 is improved. Further, when the combustion gas has a high temperature, the air flow rate becomes large, and when the temperature is low, the air flow rate becomes small, which is a preferable air blower as a heater.
実施例を示す図によりこの構成を説明すると、１は暖房
器のバーナ、２はバーナ１の上方に取付けた排ガス補集
器、４は排ガス補集器２で補集した燃焼排気ガスのガス
放出口であり、排ガス補集器２から排ガス放出口４の間
の排ガス流路５に室内空気との熱交換器３を配置してい
る。６は排ガス異常検出器、７は温度センサーであり、
熱交換器３から排ガス放出口４に至る排ガス流路５に取
付けてある。This structure will be described with reference to the drawings showing an embodiment. 1 is a heater burner, 2 is an exhaust gas collector mounted above the burner 1, and 4 is a gas discharge of combustion exhaust gas collected by the exhaust gas collector 2. The heat exchanger 3 for the indoor air is arranged in the exhaust gas flow path 5 between the exhaust gas collector 2 and the exhaust gas discharge port 4, which is the outlet. 6 is an exhaust gas abnormality detector, 7 is a temperature sensor,
It is attached to the exhaust gas passage 5 extending from the heat exchanger 3 to the exhaust gas discharge port 4.
８はバーナ１の燃焼部及び熱交換部に室内空気を送る対
流ファンであり、該対流ファン８は排ガス流路５の熱交
換器３にも室内空気を吹付てる。該対流ファン８は回転
数可変タイプで構成して、送風量が可変出来るようにな
っており、サーミスタで構成する温度センサー７の検出
温度が排ガス異常検出器６に最適な温度となるように対
流ファン８の送風量を可変する。Reference numeral 8 denotes a convection fan that sends indoor air to the combustion section and the heat exchange section of the burner 1, and the convection fan 8 also blows indoor air to the heat exchanger 3 of the exhaust gas passage 5. The convection fan 8 is composed of a variable number of revolutions so that the amount of blown air can be varied, and convection is performed so that the temperature detected by the temperature sensor 7 composed of a thermistor becomes the optimum temperature for the exhaust gas abnormality detector 6. The amount of air blown by the fan 8 is changed.
１４は熱交換器３に取付けた放熱フィン、１５はバーナ
１の燃焼部２と交換器３との間に設けた遮熱板であり、
対流ファン８で送られる室内空気は遮熱板１５で分流し
て一方はバーナ１の燃焼部や熱交換部に送られ、室内空
気を加熱して温風にして吹き出している。また、分流し
た他方は熱交換器３に吹付け、遮熱板１５によってバー
ナ１の熱を受けることはなく、放熱フィン１４で効果的
に冷却される。Reference numeral 14 is a radiating fin attached to the heat exchanger 3, 15 is a heat shield plate provided between the burner 1 of the burner 1 and the exchanger 3,
The indoor air sent by the convection fan 8 is diverted by the heat shield plate 15 and one of them is sent to the combustion section or the heat exchange section of the burner 1 to heat the indoor air to generate warm air and blow it out. The other part of the split flow is sprayed onto the heat exchanger 3, and the heat of the burner 1 is not received by the heat shield plate 15 and is effectively cooled by the radiation fins 14.
バーナ１を燃焼すると、バーナ１の上方に排ガス補集器
２を取付けたから、燃焼排ガスの一部は排ガス補修器２
から熱交換器３へ流れ、燃焼排ガスは熱交換器３で室内
空気と熱交換して温度を低下するものである。この時排
ガス流路５の温度センサー７は燃焼排気ガスの温度が、
排ガス異常検出器６の最適温度となるよう対流ファン８
の送風量を制御するものである。When the burner 1 is burned, the exhaust gas collector 2 is attached above the burner 1, so that part of the combustion exhaust gas is recovered by the exhaust gas repair device 2.
Flows into the heat exchanger 3 and the combustion exhaust gas exchanges heat with the indoor air in the heat exchanger 3 to lower the temperature. At this time, the temperature sensor 7 of the exhaust gas passage 5 indicates that the temperature of the combustion exhaust gas is
The convection fan 8 is set so that the exhaust gas abnormality detector 6 has an optimum temperature.
It controls the amount of air flow.
即ち第２図は排ガス異常検出器６の電気回路であり、主
として未燃ガスを監視することによって異常を検出す
る。９は接触燃焼方式による排ガス異常検出素子であ
り、内部は二個の素子体が直列接続され、一方を密閉室
・他方を開放しておくことによって、開放した素子体に
未燃ガスが接触して燃焼する時該素子体の温度上昇（異
常状態）を接続部の電圧変動として検出する。That is, FIG. 2 shows an electric circuit of the exhaust gas abnormality detector 6, which detects an abnormality mainly by monitoring unburned gas. Reference numeral 9 is an exhaust gas abnormality detection element by a catalytic combustion method. Inside, two element bodies are connected in series, and by opening one in a sealed chamber and the other, unburned gas comes into contact with the opened element body. At the time of combustion, the temperature rise (abnormal state) of the element body is detected as the voltage fluctuation of the connection part.
即ち完全燃焼による排ガス中にはＣＯガス等の未燃ガス
を含んでおらず、また空気供給量と燃料とが一致してい
るバーナでは排ガス中に酸素を含まない。異常燃焼を起
すと排ガス中に未燃成分であるＣＯガスが増加し、空気
不足による異常燃焼であれば炎が立ち上がり排ガス補集
器２は炎中に位置して酸素を検出し、異常を検出するこ
とができる。That is, the exhaust gas resulting from complete combustion does not contain unburned gas such as CO gas, and the burner in which the air supply amount and the fuel are the same does not contain oxygen in the exhaust gas. When abnormal combustion occurs, CO gas, which is an unburned component, increases in the exhaust gas, and if abnormal combustion occurs due to insufficient air, a flame rises and the exhaust gas collector 2 is located in the flame to detect oxygen and detect an abnormality. can do.
１０・１０′は直列接続された固定抵抗であり、前記素
子体の電圧変動を知る為の基準電圧を得ている。１１は
基準電圧と素子体の電圧変動を比較する差動増幅器であ
り、出力はトランジスタ１２を介してリレー１３を駆動
する。従ってリレー１３の接点は警報器を鳴らしたり、
バーナコントローラに働きかけて燃焼を停止するもので
ある。Reference numerals 10 and 10 'are fixed resistors connected in series to obtain a reference voltage for knowing the voltage fluctuation of the element body. Reference numeral 11 is a differential amplifier that compares the reference voltage with the voltage fluctuation of the element body, and the output drives the relay 13 via the transistor 12. Therefore, the contact of the relay 13 sounds an alarm,
It works on the burner controller to stop the combustion.
温度センサー７は前記抵抗１０・１０′によって得られ
た基準電圧を補正るものであるが、この温度センサー７
は排ガス流路５の燃焼ガスの温度を検出する働きがあ
り、固定抵抗１０・１０′と温度センサー７との接続点
の電圧は、燃焼ガス温度の変化によって上下するから、
排ガス異常検出器６に最適な電圧を定めておくことによ
って、上下に電圧が変動した時、この変動を打ち消すよ
うに対流ファン８の回転数を変えて、排ガス温度を一定
に保つことができる。The temperature sensor 7 corrects the reference voltage obtained by the resistors 10 and 10 '.
Has a function of detecting the temperature of the combustion gas in the exhaust gas flow path 5, and the voltage at the connection point between the fixed resistance 10.10 'and the temperature sensor 7 rises and falls depending on the change in the combustion gas temperature.
By setting the optimum voltage for the exhaust gas abnormality detector 6, when the voltage fluctuates up and down, the rotation speed of the convection fan 8 can be changed so as to cancel this fluctuation, and the exhaust gas temperature can be kept constant.
以上の様にこの発明では燃焼排ガスを直接排ガス異常検
出器に導いても、排ガス異常検出器は確実に作動する様
になり、燃焼中のバーナの排気ガスから直接異常燃焼を
検出するものであるから、間接式の異常検出に比べて格
段に精度が向上し、バーナの安全性が高まった。As described above, in the present invention, even if the combustion exhaust gas is directly guided to the exhaust gas abnormality detector, the exhaust gas abnormality detector operates reliably, and the abnormal combustion is directly detected from the exhaust gas of the burning burner. Therefore, compared with the indirect type abnormality detection, the accuracy is significantly improved and the safety of the burner is increased.
また補集する燃焼排ガス量はごくわずかですむものであ
り、排ガス補集器・熱交換器等は小さなものでよく、コ
ストアップもごくわずかですむものである。In addition, the amount of combustion exhaust gas to be collected is very small, and the exhaust gas collector, heat exchanger, etc. may be small, and the cost increase is also very small.
また対流ファンは燃焼排気ガスの温度に応じて回転数を
変えるものであり、正常燃焼中であっても燃焼が促進し
て発熱量が大の時は送風量が多く、逆に発熱量が小さく
なった時は燃焼排気ガスの温度が低く送風量が少なくな
るから、燃焼量に関連して対流ファンの回転数が変わる
ようになり、暖房器の対流ファン制御として好ましいも
のになった。The convection fan changes the number of revolutions according to the temperature of the combustion exhaust gas.When the combustion is accelerated and the calorific value is large even during normal combustion, the air flow is large, and conversely the calorific value is small. When the temperature becomes low, the temperature of the combustion exhaust gas becomes low and the amount of air blown becomes small, so that the rotation speed of the convection fan changes depending on the combustion amount, which is preferable for controlling the convection fan of the heater.
第１図はこの発明の実施例の断面図、第２図は排ガス異
常検出器の実施例の回路図である。 １……バーナ、２……排ガス補集器、３……熱交換器、
４……排ガス放出口、５……排ガス流路、６……排ガス
異常検出器、７……温度センサー、８……対流ファンFIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a circuit diagram of an embodiment of an exhaust gas abnormality detector. 1 ... Burner, 2 ... Exhaust gas collector, 3 ... Heat exchanger,
4 ... Exhaust gas discharge port, 5 ... Exhaust gas flow path, 6 ... Exhaust gas abnormality detector, 7 ... Temperature sensor, 8 ... Convection fan
Claims (1)
と、補集した燃焼排ガスと室内空気との熱交換器３と、
補集した燃焼排ガスの排ガス放出口４とを連続して配置
し、熱交換器３から排ガス放出口４に至る排ガス流路５
には温度センサー７と排ガス異常検出器６とを取付ける
と共に、バーナ１の燃焼部及び熱交換部に室内空気を送
る対流ファン８を設け、該対流ファン８は回転数可変タ
イプで構成して空気流を熱交換器３にも導き、回転数を
可変する対流ファンによって熱交換器３の出口の排ガス
温度を前記温度センサー７の信号で一定に保つことを特
徴とする暖房器の排ガス検出器取付構造。1. An exhaust gas collector 2 mounted above a burner 1.
And a heat exchanger 3 for collecting the collected combustion exhaust gas and room air,
An exhaust gas flow path 5 extending from the heat exchanger 3 to the exhaust gas discharge port 4 is arranged continuously with the exhaust gas discharge port 4 of the collected combustion exhaust gas.
A temperature sensor 7 and an exhaust gas abnormality detector 6 are attached to the burner 1, and a convection fan 8 that sends indoor air to the combustion section and the heat exchange section of the burner 1 is provided. The exhaust gas detector of a heating device is characterized in that the exhaust gas temperature at the outlet of the heat exchanger 3 is kept constant by the signal of the temperature sensor 7 by means of a convection fan that guides the flow to the heat exchanger 3 and the rotation speed is variable. Construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61020571A JPH0619232B2 (en) | 1986-01-31 | 1986-01-31 | Exhaust gas detector mounting structure for heaters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61020571A JPH0619232B2 (en) | 1986-01-31 | 1986-01-31 | Exhaust gas detector mounting structure for heaters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62178818A JPS62178818A (en) | 1987-08-05 |
| JPH0619232B2 true JPH0619232B2 (en) | 1994-03-16 |
Family
ID=12030877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61020571A Expired - Lifetime JPH0619232B2 (en) | 1986-01-31 | 1986-01-31 | Exhaust gas detector mounting structure for heaters |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0619232B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990014561A1 (en) * | 1989-05-13 | 1990-11-29 | Zibrowius Gmbh | Process for monitoring and safely operating flueless stoves, especially paraffin stoves and device for implementing the process |
| RU2067728C1 (en) * | 1989-10-26 | 1996-10-10 | Тойотоми Ко., Лтд. | Method of control and safety system of furnace without smoke stack |
| JP5067037B2 (en) * | 2007-06-21 | 2012-11-07 | 三浦工業株式会社 | Combustion device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54240A (en) * | 1977-06-02 | 1979-01-05 | Yazaki Corp | Gas detecting apparatus |
| JPS5710023A (en) * | 1980-06-23 | 1982-01-19 | Toshiba Corp | Safety device for combustion |
-
1986
- 1986-01-31 JP JP61020571A patent/JPH0619232B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62178818A (en) | 1987-08-05 |
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