JPH04281109A - Controller of oil burner - Google Patents
Controller of oil burnerInfo
- Publication number
- JPH04281109A JPH04281109A JP4174591A JP4174591A JPH04281109A JP H04281109 A JPH04281109 A JP H04281109A JP 4174591 A JP4174591 A JP 4174591A JP 4174591 A JP4174591 A JP 4174591A JP H04281109 A JPH04281109 A JP H04281109A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- temperature
- vaporization
- section
- oil
- 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
- 238000002485 combustion reaction Methods 0.000 claims abstract description 141
- 230000008016 vaporization Effects 0.000 claims abstract description 79
- 238000001514 detection method Methods 0.000 claims abstract description 66
- 238000009834 vaporization Methods 0.000 claims abstract description 44
- 239000006200 vaporizer Substances 0.000 claims description 13
- 239000000446 fuel Substances 0.000 abstract description 5
- 239000003350 kerosene Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000002159 abnormal effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 244000000626 Daucus carota Species 0.000 description 1
- 244000249914 Hemigraphis reptans Species 0.000 description 1
- 101100004605 Schizosaccharomyces pombe (strain 972 / ATCC 24843) lvs1 gene Proteins 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 235000005770 birds nest Nutrition 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 235000005765 wild carrot Nutrition 0.000 description 1
Landscapes
- Control Of Combustion (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は石油等の油燃料を使用す
る油燃焼器の気化燃焼部の安全制御動作に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety control operation of a vaporization combustion section of an oil combustor that uses oil fuel such as petroleum.
【０００２】0002
【従来の技術】従来のこの種の制御装置は、例えば図６
に石油給湯機を例として示すように、熱交換器１と、熱
交換器１を加熱するバーナ２と、バーナ２から燃焼熱の
一部を受熱し、かつ気化した気化油をバーナ２へ送る気
化部３と、気化部３に内蔵され、バーナ２からの受熱に
加えて、さらに油を気化促進させるヒータ４と、気化部
３へ燃料油を供給する送油手段（電磁ポンプ等）５と、
気化部３の温度を検出する気化部温度検出手段（サーミ
スタ等）６、バーナ２への気化油を点火させる点火器７
と、バーナ２の燃焼を検知する燃焼状態検知手段（フレ
ームロッド等）８と、出湯温度を検出する出湯温度検出
手段（サーミスタ等）９と、運転，停止及び出湯温度の
設定を行なう運転調節器１０と、バーナ２へ燃焼用空気
を送る送風機（ＤＣファンモータ等で構成されている。
）１１と、運転調節器１０からの運転、停止信号及び出
湯温度設定値信号と、送油手段５、送風機１１へ燃焼量
に応じた出力制御信号をそれぞれ出力する燃焼制御手段
１２とにより構成されていた。[Prior Art] A conventional control device of this type is shown in FIG. 6, for example.
As shown in the example of an oil water heater, there is a heat exchanger 1, a burner 2 that heats the heat exchanger 1, and a part of the combustion heat that is received from the burner 2, and the vaporized oil is sent to the burner 2. a vaporizer 3; a heater 4 built into the vaporizer 3 that receives heat from the burner 2 and further promotes vaporization of the oil; and an oil feeding means (such as an electromagnetic pump) 5 that supplies fuel oil to the vaporizer 3. ,
A vaporizer temperature detection means (thermistor, etc.) 6 that detects the temperature of the vaporizer 3, and an igniter 7 that ignites vaporized oil to the burner 2.
, a combustion state detection means (such as a flame rod) 8 that detects combustion in the burner 2, a hot water temperature detection means (such as a thermistor) 9 that detects hot water temperature, and an operation controller that operates, stops, and sets the hot water temperature. 10, a blower (composed of a DC fan motor, etc.) that sends combustion air to the burner 2, an operation/stop signal and a hot water outlet temperature setting value signal from the operation controller 10, an oil supply means 5, The combustion control means 12 each outputs an output control signal to the blower 11 according to the amount of combustion.
【０００３】この構成により、運転調節器１０がオフよ
りオンされた時、燃焼制御手段１２は、気化部３が所定
の設定温度を維持するように、ヒータ４へ通電制御信号
を出力し、開栓時、送風機１１、点火器７、送油手段５
と順次出力し、燃焼状態検知手段８により着火検出後、
運転調節器１０からの設定温度に出湯温度をするように
送風機１１及び送油手段５の出力を調節（いわゆるフィ
ードバック制御）を行なっていた。With this configuration, when the operation controller 10 is turned on from off, the combustion control means 12 outputs an energization control signal to the heater 4 so that the vaporizer 3 maintains a predetermined set temperature, and turns the heater 4 open. When plugged, blower 11, igniter 7, oil supply means 5
are sequentially output, and after ignition is detected by the combustion state detection means 8,
The outputs of the blower 11 and the oil feeding means 5 were adjusted (so-called feedback control) so that the temperature of the tapped water was equal to the set temperature from the operation controller 10.
【０００４】0004
【発明が解決しようとする課題】しかしながら上記のよ
うな構成では、気化部３の気化熱は、ヒータ４からの伝
熱量とバーナ２からの燃焼熱を受熱した受熱量とを合わ
せた熱量であるため、通常燃焼時は燃焼量に応じてヒー
タへの電力量を調節して最適燃焼すべき気化温度を維持
させている。ところが、燃焼用空気および排気ガスの流
れが不完全時、すなわち吸気部のゴミ詰まりや鳥類の巣
等による排気マフラの閉塞等が発生した場合は、燃焼用
空気の供給量が減少するため正常燃焼から黄火燃焼へと
変化し、一酸化炭素やスス、黒煙等を発生し不完全燃焼
に至るとともに、バーナ２からの受熱量が相対的に増加
し、ヒータ４をオフしたにもかかわらず気化筒温度が上
昇してしまう。また、この時燃焼状態が完全に消火に至
らずに不完全燃焼している場合、燃焼検知手段８により
着火を検出しつつ気化筒温度上昇が継続する。また、気
化筒の温度上昇速度は、燃焼量によって変化するため一
定でなく、気化筒温度検出手段のショート故障検出レベ
ルは、正常運転時の温度制御ばらつきを考慮して、十分
高温側に設定されるため、即座にショート故障レベルに
達しないのでこの間は不完全燃焼を継続するという課題
があった。[Problem to be Solved by the Invention] However, in the above configuration, the heat of vaporization in the vaporizing section 3 is the sum of the amount of heat transferred from the heater 4 and the amount of heat received by receiving combustion heat from the burner 2. Therefore, during normal combustion, the amount of power supplied to the heater is adjusted according to the amount of combustion to maintain the vaporization temperature for optimum combustion. However, when the flow of combustion air and exhaust gas is incomplete, that is, when the intake section is clogged with dirt or the exhaust muffler is blocked by a bird's nest, etc., the amount of combustion air supplied decreases, and normal combustion is not possible. The combustion changes from yellow to yellow, producing carbon monoxide, soot, black smoke, etc., leading to incomplete combustion, and the amount of heat received from burner 2 increases relatively, even though heater 4 is turned off. The vaporizing cylinder temperature will rise. Furthermore, if the combustion state is not completely extinguished and incomplete combustion occurs at this time, the combustion detection means 8 detects ignition and the temperature of the vaporization cylinder continues to rise. In addition, the temperature rise rate of the carburetor is not constant because it changes depending on the amount of combustion, and the short failure detection level of the carburetor temperature detection means is set to a sufficiently high temperature side, taking into account temperature control variations during normal operation. Therefore, there was a problem in that incomplete combustion continued during this period because the short-circuit failure level was not immediately reached.
【０００５】本発明はかかる従来の課題を解消するもの
で、油燃焼器の燃焼用空気量の供給不足や排気閉塞等に
よる、不完全燃焼を早期に検知し、燃焼停止等の然るべ
き動作を行なうことにより長時間不完全燃焼を継続し、
一酸化炭素や黒煙、スス等を出し続けるのを回避する安
全で信頼性の高い油燃焼器を提供することを目的とする
。The present invention solves such conventional problems by detecting incomplete combustion at an early stage due to insufficient supply of combustion air to the oil combustor, exhaust blockage, etc., and taking appropriate actions such as stopping combustion. This allows incomplete combustion to continue for a long time,
The purpose is to provide a safe and highly reliable oil combustor that avoids continuous emission of carbon monoxide, black smoke, soot, etc.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に本発明の油燃焼器の制御装置は、バーナから燃焼熱を
受熱して油を気化する気化部と、気化部へ燃焼量に応じ
て油を送る送油手段と、バーナの燃焼状態を検出する燃
焼状態検出手段と、気化部の温度を検出する気化部温度
検出手段と、気化部温度検出手段からの温度検出信号を
入力し、第一の気化部温度判定値および第二の気化部温
度判定値と比較し、比較判定信号を出力する温度比較部
と、送油手段に燃焼量に応じて燃焼量制御信号を出力し
、かつ、燃焼中は気化部を第一の気化部温度判定値近傍
に維持するとともに、温度比較部からの比較判定信号が
第二の気化部温度判定値を越え、かつ燃焼状態検出手段
からの燃焼状態検出レベルと正常時燃焼状態検出レベル
との偏差が所定レベルを越えた場合、送油手段へ燃焼停
止信号を出力する気化燃焼制御手段とを備えたものであ
る。[Means for Solving the Problems] In order to solve the above-mentioned problems, the oil combustor control device of the present invention includes a vaporizing section that receives combustion heat from a burner to vaporize oil, and a vaporizing section that receives combustion heat from a burner to vaporize oil according to the amount of combustion. a combustion state detection means for detecting the combustion state of the burner, a vaporization section temperature detection means for detecting the temperature of the vaporization section, and a temperature detection signal from the vaporization section temperature detection means; a temperature comparison section that compares the first vaporization section temperature determination value and the second vaporization section temperature judgment value and outputs a comparison determination signal; and outputs a combustion amount control signal to the oil feeding means according to the combustion amount; During combustion, the vaporizing section is maintained near the first vaporizing section temperature judgment value, and the comparison judgment signal from the temperature comparison section exceeds the second vaporizing section temperature judgment value, and the combustion state is detected from the combustion state detection means. The apparatus includes vaporization combustion control means for outputting a combustion stop signal to the oil supply means when the deviation between the detection level and the normal combustion state detection level exceeds a predetermined level.
【０００７】[0007]
【作用】本発明は上記の構成によって、燃焼用空気およ
び排気ガスの流れが不完全時、すなわち吸気部のゴミ詰
まりや排気マフラの閉塞等が発生した場合に、燃焼用空
気の供給量が減少するために、バーナからの受熱量が相
対的に増加し、ヒータをオフしたにもかかわらず気化筒
温度が上昇し、かつ不完全燃焼に至る。そして、気化燃
焼制御手段は正常燃焼運転時の気化筒の制御維持温度近
傍より所定の温度だけ高い第二の気化筒温度検出判定値
を越え、かつ燃焼状態検出手段からの燃焼状態検出レベ
ルと正常時燃焼状態検出レベルとの偏差が所定レベルを
越えた場合、燃焼用空気量の供給不足または排気通路閉
塞等による不完全燃焼であると判定し、燃焼を停止させ
る。したがって、一酸化炭素ガス排出等の危険状態を早
期に回避する安全動作を行なう。[Operation] With the above structure, the present invention reduces the amount of combustion air supplied when the flow of combustion air and exhaust gas is incomplete, that is, when the intake section is clogged with dust or the exhaust muffler is clogged. As a result, the amount of heat received from the burner increases relatively, and the temperature of the vaporizing cylinder increases even though the heater is turned off, leading to incomplete combustion. Then, the vaporization combustion control means exceeds a second vaporization cylinder temperature detection judgment value which is higher by a predetermined temperature than the vicinity of the control maintenance temperature of the vaporization cylinder during normal combustion operation, and the combustion state detection level from the combustion state detection means is normal. If the deviation from the current combustion state detection level exceeds a predetermined level, it is determined that incomplete combustion is due to insufficient supply of combustion air or blockage of the exhaust passage, and combustion is stopped. Therefore, safety operations are performed to quickly avoid dangerous situations such as carbon monoxide gas emissions.
【０００８】[0008]
【実施例】以下、本発明の実施例を添付図に基づいて説
明する。なお、従来例の図６と同一部材には同一符号を
付している。図１は本発明の石油給湯機の制御構成図で
ある。１３は、第一の気化部温度判定値（例えば、ＫＴ
Ｓ１＝２８０℃とする。）、１３’は、第二の気化部温
度判定値（例えば、ＫＴＳ２＝３１０℃とする。）、１
４は、気化部温度検出手段６からの温度検出信号と、第
一および第二の気化部温度判定値とを比較し、比較判定
信号を出力する温度比較部、１５は、温度比較部１４か
らの比較判定信号と、出湯温度検出手段９からの出湯温
度検出信号と、運転調節器１０からの運転／停止信号と
、燃焼状態検知手段８からの燃焼状態検知信号とを入力
し、ヒータ４へ通電出力制御信号を、送油手段５、送風
機１１へ燃焼量に応じた出力制御信号を出力する気化燃
焼制御手段である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the accompanying drawings. Note that the same members as in the conventional example shown in FIG. 6 are given the same reference numerals. FIG. 1 is a control configuration diagram of the oil water heater of the present invention. 13 is the first vaporization section temperature determination value (for example, KT
S1=280°C. ), 13' is the second vaporization section temperature determination value (for example, KTS2 = 310°C), 1
4 compares the temperature detection signal from the vaporization section temperature detection means 6 with the first and second vaporization section temperature judgment values and outputs a comparison judgment signal; 15 indicates a temperature comparison section from the temperature comparison section 14; The comparison judgment signal, the hot water temperature detection signal from the hot water temperature detection means 9, the operation/stop signal from the operation controller 10, and the combustion state detection signal from the combustion state detection means 8 are inputted to the heater 4. It is a vaporization combustion control means that outputs an energization output control signal to the oil feeding means 5 and the blower 11 according to the amount of combustion.
【０００９】また、図２に示すように、燃焼状態検知信
号の入力方法は、燃焼状態検知手段８とバーナ２との間
に直列抵抗１６、スイッチ１７を介して電源（ＶＤＣ）
１８を印加した時に炎の整流作用によって、バーナ２−
燃焼状態検知手段８間に炎電流が流れることによって、
直列抵抗１６の両端間の電圧（ＶＬＶ）によって検出で
き、消火→黄火、赤火燃焼→正常燃焼に従って燃焼状態
検知信号（ＶＬＶ）が増加するように接続されている。As shown in FIG. 2, the combustion state detection signal is input by connecting a power supply (VDC) between the combustion state detection means 8 and the burner 2 through a series resistor 16 and a switch 17.
When 18 is applied, burner 2-
By the flame current flowing between the combustion state detection means 8,
It can be detected by the voltage (VLV) across the series resistor 16, and is connected so that the combustion state detection signal (VLV) increases as the fire goes out → yellow fire, red fire → normal combustion.
【００１０】また、図３（ａ）に示すように、温度比較
部１４は、第二の気化部温度判定値１３’よりさらに高
温側に気化部温度検出手段６のショート故障を検出する
ための第三の気化部温度判定値（例えば、ＫＴＳＳ＝３
８０℃とする。）１３”も入力し比較判定信号を気化燃
焼制御手段１５へ出力するように接続されている。Further, as shown in FIG. 3(a), the temperature comparator 14 has a temperature higher than the second vaporizing section temperature judgment value 13' for detecting a short-circuit failure in the vaporizing section temperature detecting means 6. Third vaporizer temperature determination value (for example, KTSS=3
The temperature shall be 80°C. ) 13'' is also input and connected so as to output a comparison judgment signal to the vaporization combustion control means 15.
【００１１】上記構成において、動作を説明すると、図
３の（ａ）〜（ｄ）に示すタイムチャートのようになる
。ａ，ｂ，ｃ，ｄは、それぞれ気化部３の温度検出信号
（ＫＴ）、ヒータ４への出力制御信号（ＨＴ）、燃焼状
態検知手段８の燃焼状態検知信号（ＶＬＶ）、運転調節
器１０の運転／停止信号（ＵＴ）の時間特性である。ま
た、図４は、燃焼状態検知手段８の正常燃焼から異常燃
焼への各燃焼状態での最大、最小燃焼量における燃焼状
態検知信号（ＶＬＶ）の変化を示す関係図である。In the above configuration, the operation will be explained as shown in the time charts shown in FIGS. 3(a) to 3(d). a, b, c, and d are the temperature detection signal (KT) of the vaporization section 3, the output control signal (HT) to the heater 4, the combustion state detection signal (VLV) of the combustion state detection means 8, and the operation controller 10, respectively. This is the time characteristic of the run/stop signal (UT). Further, FIG. 4 is a relational diagram showing changes in the combustion state detection signal (VLV) at the maximum and minimum combustion amounts in each combustion state from normal combustion to abnormal combustion of the combustion state detection means 8.
【００１２】ｔ＝ｔ１で運転調節器１０が停止から運転
状態にセットされると、ヒータ４に気化燃焼制御手段１
５から通電出力制御信号が出力され、気化部３が予熱開
始される。その後、気化部３の温度が第一の気化部温度
判定値（ＫＴＳ１）にほぼ維持される。つまり、図３（
ａ）に示すように、ＫＴＳ１より所定の温度幅でヒータ
をオン（ＫＴｏｎ点）、オフ（ＫＴｏｆｆ 点）する。
この後、ｔ＝ｔ２にてカランが開栓されて熱交換器１に
水が流れるとバーナ２の燃焼動作が開始される。燃焼状
態検知手段８により着火を検知し、その後、運転調節器
１０の設定温度に出湯温度を一致させるように気化燃焼
制御手段１５は燃焼量に応じて出力制御信号を出力する
。この時、燃焼状態検知手段８は、燃焼状態を常に監視
し、燃焼状態検知信号（ＶＬＶ）が正常燃焼レベル（Ｌ
ＶＳ１）以上か否かをチェックしている。When the operation controller 10 is set from stop to operating state at t=t1, the vaporization combustion control means 1 is connected to the heater 4.
An energization output control signal is output from 5, and preheating of the vaporizer 3 is started. Thereafter, the temperature of the vaporizing section 3 is maintained approximately at the first vaporizing section temperature determination value (KTS1). In other words, Figure 3 (
As shown in a), the heater is turned on (KTon point) and turned off (KToff point) in a predetermined temperature range from KTS1. Thereafter, at t=t2, the cooker is opened and water flows into the heat exchanger 1, and the burner 2 starts its combustion operation. The combustion state detection means 8 detects ignition, and then the vaporization combustion control means 15 outputs an output control signal according to the combustion amount so that the outlet temperature matches the set temperature of the operation controller 10. At this time, the combustion state detection means 8 constantly monitors the combustion state so that the combustion state detection signal (VLV) is at the normal combustion level (L
VS1) or higher is checked.
【００１３】ここで、ｔ＝ｔ３において、天候変化や異
物付着等により給排気通路の通気抵抗が増大したとする
と、図３（ｃ）のように、正常燃焼状態から燃焼空気不
足により黄火燃焼、または赤火燃焼に至るため、燃焼状
態検知信号（ＶＬＶ）は、次第に減少する。また、バー
ナ２の火炎は正常燃焼の火炎に対して空気量不足のため
短炎化傾向になり気化部３への受熱量が増大する。従っ
て、ヒータ４への給電をオフしても、なお気化部３の温
度は上昇する。この時、燃焼用空気不足で燃焼するため
、一酸化炭素の排気量が増大し、場合によっては黒煙、
スス、臭気等が発生する。Here, at t=t3, if the ventilation resistance of the air supply and exhaust passages increases due to weather changes, foreign matter adhesion, etc., as shown in FIG. , or red-flame combustion, the combustion state detection signal (VLV) gradually decreases. Further, the flame of the burner 2 tends to be shorter due to the lack of air amount compared to the flame of normal combustion, and the amount of heat received by the vaporizer 3 increases. Therefore, even if the power supply to the heater 4 is turned off, the temperature of the vaporizer 3 still rises. At this time, due to the lack of combustion air, the amount of carbon monoxide emissions increases, and in some cases, black smoke,
Soot, odor, etc. will be generated.
【００１４】しかし、燃焼状態検知手段８は、燃焼状態
を常に監視しているので、燃焼状態検知信号（ＶＬＶ）
が正常燃焼レベル（ＬＶＳ１）から下降して、ｔ＝ｔ４
にて、異常燃焼検知レベル（ＬＶＳ２）以下になったこ
とを検出する。つまり、正常燃焼検出レベルとの偏差が
所定レベル（ΔＬ）をこえたことを検出する。However, since the combustion state detection means 8 constantly monitors the combustion state, the combustion state detection signal (VLV)
decreases from the normal combustion level (LVS1), and t=t4
, it is detected that the temperature has fallen below the abnormal combustion detection level (LVS2). In other words, it is detected that the deviation from the normal combustion detection level exceeds a predetermined level (ΔL).
【００１５】さらに、ｔ＝ｔ５にて、気化燃焼制御手段
１５は、気化部温度検出手段６からの温度検出信号が、
第二の気化部温度判定値１３’を越えたことを温度比較
部１４からの比較判定信号により検知する。すなわち、
気化燃焼制御手段１５は、燃焼状態が異常燃焼で、かつ
気化部３がヒータ４への通電オフにもかかわらず異常上
昇しつつあることを検知し、即座に送油手段５への燃料
供給を停止し燃焼停止させる。さらに、送風機１１によ
って残ガスを排出する。Furthermore, at t=t5, the vaporization combustion control means 15 detects that the temperature detection signal from the vaporization section temperature detection means 6 is
Exceeding the second vaporization section temperature judgment value 13' is detected by a comparison judgment signal from the temperature comparison section 14. That is,
The vaporization combustion control means 15 detects that the combustion state is abnormal combustion and that the vaporization section 3 is increasing abnormally even though the heater 4 is turned off, and immediately stops the fuel supply to the oil supply means 5. Stop and stop combustion. Furthermore, the remaining gas is discharged by the blower 11.
【００１６】従って、燃焼状態を常時監視しつつ、気化
部３の温度制御および監視を行なうことにより、通常時
の気化部温度制御値である第一の気化部温度判定値１３
に対し、ヒータ４のオフ時の温度オーバーシュートレベ
ルのばらつきの上限近傍において、燃焼用空気不足によ
る異常燃焼を早期に検知できる。すなわち、気化部温度
検出手段６のショート故障と区別して、ショート故障レ
ベルに達しなくてもバーナ受熱量の増大に伴う気化部３
の異常温度上昇を検知できる。よって、ただ単に、通常
時の気化部３の制御温度帯より誤動作回避のために、充
分高温側に設定されている気化部温度検出手段６のショ
ート故障検出レベルに対し、通常時の気化部温度制御帯
近傍において燃焼用空気不足による異常燃焼を誤検知な
く早期に発見でき燃焼停止させることにより安全で信頼
性の高い油燃焼器となる。Therefore, by controlling and monitoring the temperature of the vaporizing section 3 while constantly monitoring the combustion state, the first vaporizing section temperature judgment value 13, which is the normal vaporizing section temperature control value, can be adjusted.
On the other hand, abnormal combustion due to lack of combustion air can be detected early near the upper limit of the variation in the temperature overshoot level when the heater 4 is turned off. That is, in distinction from a short-circuit failure in the vaporizing section temperature detection means 6, even if the short-circuit failure level is not reached, the vaporizing section 3 due to an increase in the amount of heat received by the burner
can detect abnormal temperature rises. Therefore, the normal vaporizing section temperature is simply higher than the short failure detection level of the vaporizing section temperature detection means 6, which is set to a sufficiently high temperature side to avoid malfunctions from the normal control temperature range of the vaporizing section 3. Abnormal combustion due to lack of combustion air near the control zone can be detected early without false detection and combustion can be stopped, resulting in a safe and highly reliable oil combustor.
【００１７】また、図５に示すように燃焼量に応じて第
二の気化部温度判定値１３’を変化させることにより、
燃焼用空気不足による気化筒の温度上昇速度のばらつき
を考慮して、より迅速にかつ確実に燃焼異常を検知する
ことができる。Furthermore, as shown in FIG. 5, by changing the second vaporizing section temperature judgment value 13' according to the combustion amount,
Combustion abnormalities can be detected more quickly and reliably by taking into consideration variations in the rate of temperature rise in the vaporizer cylinder due to a lack of combustion air.
【００１８】なお、上記実施例のように、燃焼状態検出
信号の正常か異常かの判定は、あらかじめ設定された絶
対値レベル間の偏差のみに限定されるものでなく、燃焼
状態検出信号の微分値や微分値符号の継続時間等によっ
て判定することも可能である。また、上記実施例のよう
に、気化部がヒータを有するものに限定されるものでな
く、ヒータレスでの受熱方式による油燃焼器でも同等の
効果が得られる。Note that, as in the above embodiment, the determination of whether the combustion state detection signal is normal or abnormal is not limited to the deviation between preset absolute value levels, but also based on the differentiation of the combustion state detection signal. It is also possible to determine based on the value or the duration of the differential value code. Further, the vaporizing section is not limited to one having a heater as in the above embodiment, and the same effect can be obtained with an oil combustor using a heat receiving method without a heater.
【００１９】[0019]
【発明の効果】以上の様に本発明の油燃焼器の制御装置
によれば次の効果が得られる。
１）誤動作回避のために、充分高温側に設定されている
気化部温度検出手段のショート故障検出レベルに対し、
通常時の気化部温度制御帯近傍において燃焼用空気不足
による異常燃焼を誤検知なく早期に検知でき燃焼停止さ
せることにより、異常燃焼状態を長時間継続してしまう
ことなく安全で信頼性の高い油燃焼器にできる。
２）電源電圧変動や季節、天候変化による気化部の温度
変動の影響を回避し、確実に給排気通路の通気抵抗の増
大による異常燃焼を検知できる。As described above, the oil combustor control system of the present invention provides the following effects. 1) In order to avoid malfunction, the short failure detection level of the vaporizing section temperature detection means is set to a sufficiently high temperature side.
Abnormal combustion due to lack of combustion air can be detected early without false detection in the vicinity of the normal temperature control zone of the vaporizing section, and combustion can be stopped. This prevents abnormal combustion from continuing for a long period of time, resulting in safe and reliable oil production. Can be used as a combustor. 2) It is possible to avoid the influence of temperature fluctuations in the vaporizing section due to power supply voltage fluctuations, seasons, and weather changes, and to reliably detect abnormal combustion due to increased ventilation resistance in the air supply and exhaust passages.
【図１】本発明の一実施例における石油燃焼給湯機の制
御装置のブロック図FIG. 1 is a block diagram of a control device for an oil-fired water heater according to an embodiment of the present invention.
【図２】同制御装置の燃焼状態検知の制御ブロック図[Figure 2] Control block diagram for combustion state detection of the control device
【
図３】同制御装置の動作特性を示すタイムチャート[
Figure 3: Time chart showing the operating characteristics of the control device
【図
４】同制御装置の燃焼状態と燃焼状態検知信号レベルと
の関係図[Figure 4] Relationship diagram between combustion state and combustion state detection signal level of the control device
【図５】同制御装置の第２の気化部温度判定値と燃焼量
との関係図[Fig. 5] Relationship diagram between the second vaporizing section temperature determination value and combustion amount of the control device
【図６】従来の油燃焼器の制御装置の制御ブロック図[Figure 6] Control block diagram of a conventional oil combustor control device
２ バーナ ３ 気化部 ５ 送油手段 ６ 気化部温度検出手段 １３ 第一の気化部温度判定値 １３’ 第二の気化部温度判定値 １４ 温度比較部 １５ 気化燃焼制御手段 2 Burner 3 Vaporization section 5 Oil feeding means 6 Vaporizing section temperature detection means 13 First vaporizing section temperature judgment value 13' Second vaporizing section temperature judgment value 14 Temperature comparison section 15 Vaporization combustion control means
Claims (1)
気化部と、前記気化部へ燃焼量に応じて油を送る送油手
段と、前記バーナの燃焼状態を検出する燃焼状態検出手
段と、前記気化部の温度を検出する気化部温度検出手段
と、前記気化部温度検出手段からの温度検出信号を入力
し、第一の気化部温度判定値および第二の気化部温度判
定値と比較し、比較判定信号を出力する温度比較部と、
前記送油手段に燃焼量に応じて燃焼量制御信号を出力し
、かつ、燃焼中は前記気化部を前記第一の気化部温度判
定値近傍に維持するとともに、前記温度比較部からの比
較判定信号が前記第二の気化部温度判定値を越え、かつ
前記燃焼状態検出手段からの燃焼状態検出レベルと正常
時燃焼状態検出レベルとの偏差が所定レベルを越えた場
合、前記送油手段へ燃焼停止信号を出力する気化燃焼制
御手段とを備えた油燃焼器の制御装置。Claims: 1. A vaporizer that receives combustion heat from a burner to vaporize oil; an oil feeder that sends oil to the vaporizer according to a combustion amount; and a combustion state detector that detects a combustion state of the burner. and a vaporizing section temperature detecting means for detecting the temperature of the vaporizing section, and a temperature detection signal from the vaporizing section temperature detecting means, and a first vaporizing section temperature judgment value and a second vaporizing section temperature judgment value. a temperature comparison section that compares and outputs a comparison judgment signal;
A combustion amount control signal is output to the oil feeding means according to the combustion amount, and during combustion, the vaporization section is maintained near the first vaporization section temperature judgment value, and a comparison judgment from the temperature comparison section is performed. If the signal exceeds the second vaporizing section temperature determination value and the deviation between the combustion state detection level from the combustion state detection means and the normal combustion state detection level exceeds a predetermined level, the combustion state is sent to the oil supply means. A control device for an oil combustor, comprising a vaporization combustion control means that outputs a stop signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3041745A JP2976551B2 (en) | 1991-03-07 | 1991-03-07 | Oil combustor control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3041745A JP2976551B2 (en) | 1991-03-07 | 1991-03-07 | Oil combustor control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04281109A true JPH04281109A (en) | 1992-10-06 |
| JP2976551B2 JP2976551B2 (en) | 1999-11-10 |
Family
ID=12616964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3041745A Expired - Lifetime JP2976551B2 (en) | 1991-03-07 | 1991-03-07 | Oil combustor control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2976551B2 (en) |
-
1991
- 1991-03-07 JP JP3041745A patent/JP2976551B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2976551B2 (en) | 1999-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1274891A (en) | Control system for quick heater | |
| JP3795951B2 (en) | Low NOx burner and exhaust gas recirculation control method | |
| US20040137391A1 (en) | Sensorlesss flammable vapor protection and method | |
| US8881718B2 (en) | Fuel-fired combustor | |
| CN107676960A (en) | Gas heater and its control method | |
| JPH04281109A (en) | Controller of oil burner | |
| CN207379047U (en) | Gas heater | |
| JPH0949628A (en) | Control device for combustion apparatus | |
| US20220042707A1 (en) | Systems and methods of detecting an obstructed furnace air filter using a pressure sensor | |
| JP3558448B2 (en) | Combustion equipment | |
| JPS6142164B2 (en) | ||
| KR0134134B1 (en) | Combustion equipment | |
| JPH05288344A (en) | Device for controlling oil-burner | |
| JP2537782B2 (en) | Combustion device | |
| JPS6256711A (en) | Vaporization type burning device | |
| JP2001272030A (en) | Method and device for monitoring air-fuel ratio control of burner | |
| JPH0137136Y2 (en) | ||
| JP3066256B2 (en) | Oil burning machine | |
| KR930009749B1 (en) | Heating control device for hot water supply equipment | |
| JP2603606Y2 (en) | Combustion hot air heater | |
| JP4078751B2 (en) | Combustion control method for water heater | |
| JPS6191418A (en) | Evaporation type combustion device | |
| JP2002039528A (en) | Combustion device | |
| JPS62202932A (en) | Controlling device for heating apparatus | |
| JPH0875160A (en) | Burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080910 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080910 Year of fee payment: 9 |
|
| S801 | Written request for registration of abandonment of right |
Free format text: JAPANESE INTERMEDIATE CODE: R311801 |
|
| ABAN | Cancellation due to abandonment | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080910 Year of fee payment: 9 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |