JPH0214608B2 - - Google Patents
Info
- Publication number
- JPH0214608B2 JPH0214608B2 JP59118560A JP11856084A JPH0214608B2 JP H0214608 B2 JPH0214608 B2 JP H0214608B2 JP 59118560 A JP59118560 A JP 59118560A JP 11856084 A JP11856084 A JP 11856084A JP H0214608 B2 JPH0214608 B2 JP H0214608B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- vaporizer
- fuel
- voltage
- combustion
- 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 23
- 239000006200 vaporizer Substances 0.000 claims description 22
- 239000000446 fuel Substances 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 4
- 239000003208 petroleum Substances 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 7
- 230000008016 vaporization Effects 0.000 description 6
- 238000009834 vaporization Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003350 kerosene Substances 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
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
- F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Control Of Combustion (AREA)
- Feeding And Controlling Fuel (AREA)
Description
【発明の詳細な説明】
本発明は燃焼制御装置に関するもので、詳しく
は液体燃料の気化装置を有する燃焼器具におい
て、低温時に運転する場合、あらかじめ電気ヒー
ターによつて予熱された気化装置に、低温の燃料
や燃焼用空気が触れるとこの気化装置の温度が急
激に低下し、燃料の気化能力が低下して不完全燃
焼をおこすので、燃料又は燃焼用空気の温度が低
い場合は気化装置を高温とし、気化能力の低下を
防止するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion control device, and more specifically, when a combustion appliance having a liquid fuel vaporizer is operated at low temperatures, the vaporizer, which has been preheated by an electric heater, is If the fuel or combustion air comes into contact with the vaporizer, the temperature of the vaporizer will drop rapidly, reducing the fuel vaporization ability and causing incomplete combustion.If the temperature of the fuel or combustion air is low, the vaporizer should be This prevents the vaporization ability from decreasing.
従来における燃料気化装置の温度調節装置とし
ては、液体又は気体の温度膨張を利用した機械式
温度調節器やサーミスタの温度特性を利用した電
子式温度調節器が使用されているが、いずれもそ
の調節範囲は固定となつているため、低温時で燃
料や燃焼用空気の温度が低い場合には気化能力の
低下はさけられないものであつた。 Conventional temperature regulators for fuel vaporizers include mechanical temperature regulators that utilize the temperature expansion of liquid or gas, and electronic temperature regulators that utilize the temperature characteristics of a thermistor. Since the range is fixed, a decrease in vaporization capacity is unavoidable when the temperature of the fuel or combustion air is low.
本発明は上記のような従来の不具合を解消する
ためになされたもので、以下その一実施例を添付
図面と共に説明する。 The present invention has been made to solve the above-mentioned conventional problems, and one embodiment thereof will be described below with reference to the accompanying drawings.
第１図は、灯油等の液体燃料の気化装置を有す
る燃焼器具を示し、この第１図において１はバー
ナー、２は燃料供給管、３は燃料ポンプ、４は燃
料タンク、５は電気ヒータ３３を内蔵した気化装
置、６は送風用フアンモーター、７は点火装置、
８は点火用電極、９は気化装置５の温度調節回路
用サーミスタ、１０は温度調節器である。 FIG. 1 shows a combustion appliance having a vaporizer for liquid fuel such as kerosene. In FIG. 1, 1 is a burner, 2 is a fuel supply pipe, 3 is a fuel pump, 4 is a fuel tank, and 5 is an electric heater 33. 6 is a blower fan motor, 7 is an ignition device,
8 is an ignition electrode, 9 is a thermistor for a temperature control circuit of the vaporizer 5, and 10 is a temperature regulator.
第２図は制御回路図で、第１図と共通番号を付
与した部品は同一部品である。サーミスタ９は、
気化装置５の近傍に設置され、気化装置５の温度
変化を抵抗２０との組み合わせで電圧の変化に変
換し、電圧比較器２２の反転側入力に与えてい
る。温度調節器１０は、燃焼用空気導入口付近に
設置され周辺の温度が設定値より高い場合接点は
開放し、抵抗器１３と抵抗器２１で分割された電
圧が電圧比較器２２の非反転側入力に与えられて
いる。気化装置５は、交流電源２８により、閉成
された接点２９を流れる電流で電気ヒータ３３が
熱せられる事により加熱される。気化装置５の温
度が上昇するとその近傍に設置されたサーミスタ
９の抵抗値が減少し、電圧比較器２２の反転側入
力電圧が徐々に上昇し非反転側入力電圧を越える
と電圧比較器２２の出力電圧が下降する為抵抗器
１４及び抵抗器１５で分割されたトランジスタ１
６のベース電圧も下降しトランジスタ１６に接続
されたリレー２４へ電流が流れ、これが励磁され
るため常閉接点２９が開放され電気ヒータ３３へ
の通電を遮断すると同時に接点１７を閉成し、リ
レー２５が励磁されることにより接点１８も閉成
され、自己保持回路が形成される。リレー２５が
励磁されると接点３０も閉成されて送風モーター
６が回転し、バーナー１へ燃焼用空気を送ると同
時にシーケンス回路１９も動作し、リレー２６の
励磁により接点３１を閉成し点火装置７へ通電
し、又リレー２７の励磁により接点３２を閉成し
燃料ポンプ３の運転を開始する。すると、燃料タ
ンク４から燃料が汲み上げられ、この燃料が燃料
パイプ２を通り気化装置５へ供給され気化した燃
料は、点火装置７で発生した高圧電気が点火用電
極８とバーナー１の間で放電することにより着火
し、燃焼する。その時気化装置５は、燃焼用空気
や燃料によつて冷却され、サーミスタ９の抵抗値
は増大して電圧比較器２２の反転入力電圧は低下
するが、電圧比較器２２の出力電圧が下降してい
るため抵抗２３によつて電圧比較器２２の非反転
入力電圧が当初電圧よりやや下降しているため、
電圧比較器２２は反転せず、電気ヒーター３３は
非通電のままであるが、バーナー１の燃焼熱の一
部が回収されて気化装置５の温度が徐々に回復す
るので、以後も安定した燃料気化が継続される。
しかし気温が低くて燃焼用空気や燃料の温度が低
い場合には気化装置５の温度が急激に低下するの
で、サーミスタ９の抵抗が増大し、電圧比較器２
２はついに反転し、電気ヒータ３３が通電され
る。しかしこの場合気化装置５の温度が回復する
迄は気化能力の低下によつて不完全燃焼がおきる
おそれがある。そこで、燃焼用空気導入口付近に
設置された温度調節器１０は周辺温度が設定値よ
り低下した場合その接点が閉成するようにしてお
くと電圧比較器２２の非反転側入力電圧は抵抗器
１２、抵抗器１３の並列値と抵抗器２１の分割に
よる電圧が与えられるため温度調節器１０の接点
開放時よりも電圧は高くなる。従つて、サーミス
タ９の抵抗値もより減少しなければ電圧比較器２
２は反転せず、気化装置５の温度はより高温にな
る。すなわち接点１７が閉成され燃焼用空気や燃
料によつて気化装置５は冷却されてもあらかじめ
高温に予熱してあるため燃料の気化には十分な温
度を保持することが可能になり、従つて不完全燃
焼を防止することができるのである。 FIG. 2 is a control circuit diagram, and parts given the same numbers as those in FIG. 1 are the same parts. Thermistor 9 is
It is installed near the vaporizer 5, and in combination with a resistor 20, changes in the temperature of the vaporizer 5 are converted into changes in voltage, and the voltage is applied to the inverting side input of the voltage comparator 22. The temperature regulator 10 is installed near the combustion air inlet, and when the surrounding temperature is higher than the set value, the contact is opened and the voltage divided by the resistor 13 and the resistor 21 is sent to the non-inverting side of the voltage comparator 22. given to the input. The vaporizer 5 is heated by the electric heater 33 heated by the current flowing through the closed contacts 29 by the AC power supply 28 . When the temperature of the vaporizer 5 rises, the resistance value of the thermistor 9 installed near it decreases, and when the inverting side input voltage of the voltage comparator 22 gradually increases and exceeds the non-inverting side input voltage, the voltage of the voltage comparator 22 increases. Transistor 1 divided by resistor 14 and resistor 15 because the output voltage decreases
6's base voltage also decreases, current flows to the relay 24 connected to the transistor 16, which is energized, so the normally closed contact 29 is opened to cut off the current to the electric heater 33, and at the same time, the contact 17 is closed, and the relay 24 is energized. When 25 is excited, contact 18 is also closed, forming a self-holding circuit. When the relay 25 is energized, the contact 30 is also closed and the blower motor 6 rotates, sending combustion air to the burner 1. At the same time, the sequence circuit 19 also operates, and the relay 26 is energized to close the contact 31 and ignite. The device 7 is energized and the relay 27 is energized to close the contact 32 and the fuel pump 3 starts operating. Then, fuel is pumped up from the fuel tank 4, this fuel is supplied to the vaporizer 5 through the fuel pipe 2, and the vaporized fuel is caused by high voltage electricity generated by the ignition device 7 being discharged between the ignition electrode 8 and the burner 1. This causes ignition and combustion. At that time, the vaporizer 5 is cooled by combustion air and fuel, the resistance value of the thermistor 9 increases, and the inverted input voltage of the voltage comparator 22 decreases, but the output voltage of the voltage comparator 22 decreases. Since the non-inverting input voltage of the voltage comparator 22 is slightly lower than the initial voltage due to the resistor 23,
Although the voltage comparator 22 does not reverse and the electric heater 33 remains de-energized, a portion of the combustion heat of the burner 1 is recovered and the temperature of the vaporizer 5 gradually recovers, so that stable fuel is maintained thereafter. Vaporization continues.
However, when the air temperature is low and the temperature of the combustion air and fuel is low, the temperature of the vaporizer 5 drops rapidly, so the resistance of the thermistor 9 increases, and the voltage comparator 2
2 is finally reversed and the electric heater 33 is energized. However, in this case, until the temperature of the vaporizer 5 recovers, there is a risk that incomplete combustion will occur due to a decrease in vaporization capacity. Therefore, if the temperature regulator 10 installed near the combustion air inlet is configured so that its contact closes when the ambient temperature drops below the set value, the non-inverting input voltage of the voltage comparator 22 is connected to the resistor. 12. Since a voltage is applied due to the parallel value of the resistor 13 and the division of the resistor 21, the voltage becomes higher than when the contacts of the temperature regulator 10 are opened. Therefore, unless the resistance value of the thermistor 9 is further reduced, the voltage comparator 2
2 is not reversed, and the temperature of the vaporizer 5 becomes higher. That is, even if the contact point 17 is closed and the vaporizer 5 is cooled by combustion air and fuel, it is possible to maintain a temperature sufficient for vaporizing the fuel because it has been preheated to a high temperature. Incomplete combustion can be prevented.
以上のように本発明によれば広範囲の温度環境
においても安定した燃焼をおこなわせることがで
きる燃焼制御装置を提供できる。 As described above, according to the present invention, it is possible to provide a combustion control device that can perform stable combustion even in a wide range of temperature environments.
第１図は本発明の一実施例にかかる燃焼制御装
置の構成図、第２図は同装置の電気回路図であ
る。
１……バーナー、５……気化装置、３３……電
気ヒータ。
FIG. 1 is a configuration diagram of a combustion control device according to an embodiment of the present invention, and FIG. 2 is an electrical circuit diagram of the same device. 1... burner, 5... vaporizer, 33... electric heater.
Claims (1)
の気化装置の温度を検出するサーミスタと、この
サーミスタからの出力に基づいて気化装置の温度
を設定温度に制御する温度調節部と、燃焼用空気
の温度を検出して上記温度調節部の設定温度を、
燃焼用空気の温度に応じて可変設定する温度調節
器とを備えた燃焼制御装置。1. A vaporizer that vaporizes liquid fuel such as petroleum, a thermistor that detects the temperature of the vaporizer, a temperature controller that controls the temperature of the vaporizer to a set temperature based on the output from this thermistor, and a combustion air Detects the temperature of and adjusts the set temperature of the temperature control section,
A combustion control device equipped with a temperature regulator that can be set variably according to the temperature of combustion air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59118560A JPS6016220A (en) | 1984-06-08 | 1984-06-08 | Combustion controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59118560A JPS6016220A (en) | 1984-06-08 | 1984-06-08 | Combustion controlling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6016220A JPS6016220A (en) | 1985-01-28 |
| JPH0214608B2 true JPH0214608B2 (en) | 1990-04-09 |
Family
ID=14739612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59118560A Granted JPS6016220A (en) | 1984-06-08 | 1984-06-08 | Combustion controlling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6016220A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444909B (en) * | 2011-11-15 | 2014-07-30 | 江苏碳标新能源科技有限公司 | Method and device for monitoring and controlling oxygen enrichment and compound combustion through distributed temperature field |
-
1984
- 1984-06-08 JP JP59118560A patent/JPS6016220A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6016220A (en) | 1985-01-28 |
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