JPH0534437U - Combustion hot air heater - Google Patents
Combustion hot air heaterInfo
- Publication number
- JPH0534437U JPH0534437U JP7591191U JP7591191U JPH0534437U JP H0534437 U JPH0534437 U JP H0534437U JP 7591191 U JP7591191 U JP 7591191U JP 7591191 U JP7591191 U JP 7591191U JP H0534437 U JPH0534437 U JP H0534437U
- Authority
- JP
- Japan
- Prior art keywords
- flame
- flame current
- amount
- combustion
- current
- 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 title claims abstract description 55
- 238000010438 heat treatment Methods 0.000 claims abstract 3
- 239000006200 vaporizer Substances 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 2
- 230000008016 vaporization Effects 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 18
- 239000001301 oxygen Substances 0.000 abstract description 18
- 229910052760 oxygen Inorganic materials 0.000 abstract description 18
- 230000007423 decrease Effects 0.000 abstract description 10
- 230000008033 biological extinction Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 8
- 230000007257 malfunction Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 239000003350 kerosene Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Landscapes
- Feeding And Controlling Fuel (AREA)
- Control Of Combustion (AREA)
Abstract
(57)【要約】
【目的】 小燃焼量運転時、炎電流の低下が検出された
ときに、風等による単なる炎の揺らぎが原因なのかある
いは酸素濃度の低下が原因なのかを判断して安全に運転
を制御する燃焼温風暖房器を提供する。
【構成】 炎電流Ifを検知するフレームロッド11と警告
手段12を有し、制御回路に対して酸素濃度不足を警告す
るための警告用炎電流If2と燃焼運転を停止させるため
の自動消火用炎電流If1を予め設定しておき、小燃焼量
運転時炎電流が低下してこの炎電流If2より低くなった
ことが検出された時は、油量と風量の双方を所定時間Ｔ
の間だけ増加させ、その所定時間Ｔ中に炎電流Ifが警告
用炎電流If2より大きくなれば油量と風量を元に戻して
小燃焼量運転を継続させ、小さいままである時は警告手
段を動作させつつ増加させた油量と風量を保って小燃焼
量運転を継続させ、更に炎電流Ifが自動消火用炎電流If
1より小さい時は暖房運転を停止させ、安全運転を計
る。
(57) [Summary] [Purpose] When a decrease in flame current is detected during operation with a small amount of combustion, determine whether the cause is simple flame fluctuations due to wind or the like or a decrease in oxygen concentration. To provide a combustion hot air heater that safely controls operation. [Composition] A flame current If2 that has a flame rod 11 for detecting the flame current If and a warning means 12, and warns the control circuit that the oxygen concentration is insufficient, and an automatic fire extinguishing flame that stops combustion operation. If the current If1 is set in advance and it is detected that the flame current during the operation of small combustion amount drops and becomes lower than this flame current If2, both the oil amount and the air amount are set to the predetermined time T
If the flame current If becomes larger than the warning flame current If2 during the predetermined time T, the oil amount and the air amount are returned to the original values and the small combustion amount operation is continued. While maintaining the increased oil and air flow, the small combustion amount operation is continued, and the flame current If is the flame current If for automatic extinction.
When it is less than 1, stop heating operation and measure safe operation.
Description
【０００１】[0001]
本考案は石油ファンヒーターなどの燃焼温風暖房器に関するものである。 The present invention relates to a combustion warm air heater such as an oil fan heater.
【０００２】[0002]
石油ファンヒーターなどの燃焼温風暖房器のとくに燃焼制御装置において、フ レームロッドが検出する炎電流が所定のレベル以下になったときに、バーナが異 常を起こしたか若しくは室内空気の酸素濃度が異常に低下したと判断して、その 旨報知をしたり燃焼運転を停止させるようにしたものが実用化されている。 In a combustion warm air heater such as an oil fan heater, especially in a combustion control device, when the flame current detected by the frame rod falls below a predetermined level, the burner may malfunction or the oxygen concentration in the room air may change. A system has been put into practical use, which is judged to be abnormally low and notifies that effect or stops the combustion operation.
【０００３】 その種の実用化例の中には、フレームロッドの検出する炎電流が所定のレベル 以下になったときに、灯油の供給量を増加させてその後の炎電流を監視し、その 結果炎電流が回復すれば必ずしも異常燃焼ではなく燃料噴出ノズルのタール詰ま り等燃焼を継続するのに支障無しと判断して燃焼を継続させ、逆に回復しなけれ ば酸素不足のため燃焼継続が危険であると判断して室内空気の入替え等を促す旨 報知をするか又は燃焼運転動作を停止させる例がある（特開昭61-159030号公報 ）。Among such practical applications, when the flame current detected by the frame rod falls below a predetermined level, the amount of kerosene supplied is increased and the subsequent flame current is monitored. If the flame current recovers, it is not necessarily abnormal combustion, but it is judged that there is no obstacle to continue combustion such as clogging of tar at the fuel injection nozzle, and combustion is continued. Therefore, there is an example in which it is judged that the indoor air is replaced, or the combustion operation is stopped (Japanese Patent Laid-Open No. 61-159030).
【０００４】[0004]
近年、あまり寒くない春先や秋口に室内の暖まり過ぎが起きないようにする配 慮から、従来900Kcal／Hr程度であった最小燃焼発熱量を500Kcal／Hr程度に低下 さたものが普及し始めている。 In recent years, the minimum calorific value of combustion, which was around 900Kcal / Hr in the past, has been reduced to around 500Kcal / Hr in order to prevent the room from becoming overheated in the early spring and autumn when it is not too cold. .
【０００５】 しかしそのような小燃焼量運転では、炎形成が不安定になりがちであるために 、風の影響を受けた場合に炎が動揺しやすくなり、それにともないフレームロッ ドによって検出される炎電流が変動しやすくなる。そして往々にしてフレームロ ッドは安全制御のための所定値以下の炎電流を検出することになる。However, in such a small combustion amount operation, since the flame formation tends to be unstable, the flame is apt to sway when influenced by the wind, and the flame load is detected accordingly. The flame current is likely to fluctuate. The flame rod often detects a flame current below a predetermined value for safety control.
【０００６】 これに対して従来例にあっては、バーナへの油量を増加させ、炎電流の低下が 酸素濃度低下によるものなのかどうかをチェックするが、油量を増加させるだけ では正常な酸素濃度環境（約酸素濃度20.9％）下であっても炎形成を安定化させ るには不充分で、依然として炎の動揺は起こりやすいままであり、そのためにフ レームロッドは所定値以下の炎電流を検出することとなり、無用であるにもかか わらず室内空気の入替え等を促す旨報知をしたり、あるいは燃焼運転を停止させ てしまうなどの誤動作を行なってしまう不具合があった。On the other hand, in the conventional example, the amount of oil to the burner is increased and it is checked whether or not the decrease in flame current is due to the decrease in oxygen concentration, but it is normal to increase the amount of oil alone. Even in an oxygen concentration environment (about 20.9% oxygen concentration), it is not enough to stabilize flame formation, and the fluctuation of the flame is still liable to occur. Since the current is detected, there is a problem that although it is useless, it notifies that the indoor air should be replaced, or causes a malfunction such as stopping the combustion operation.
【０００７】[0007]
本考案は、制御回路に対して予め異常燃焼時の警告用炎電流If2とこの警告用 炎電流If2より低い自動消火用炎電流If1を設定しておき、小燃焼量運転中にフレ ームロッドの検知する炎電流Ifが警告用炎電流If2より低い時に、バーナへの油 量と風量の双方を所定時間Ｔの間だけ増加させ、その所定時間Ｔ中において炎電 流Ifが警告用炎電流If2より大きい時は炎電流の低下が単に炎の動揺によるもの であって酸素濃度低下によるものではないと判断して油量風量共に元の状態に戻 し、他方小さいまま正常値に復さない時は警告手段を動作させたまま増加させた 油量と風量を保って燃焼を継続させ、更に炎電流Ifが自動消火用炎電流If1より 小さい時は燃焼用空気の酸素濃度が危険域に到ったと判断してバーナを自動消火 させるよう制御する。 According to the present invention, a warning flame current If2 at the time of abnormal combustion and a flame current If1 for automatic extinguishing lower than this warning flame current If2 are set in advance in the control circuit to detect the flame rod during operation with a small combustion amount. When the flame current If is lower than the warning flame current If2, both the oil amount and the air flow rate to the burner are increased for a predetermined time T, and the flame current If is higher than the warning flame current If2 during the predetermined time T. When it is large, it is judged that the decrease in flame current is simply due to the fluctuation of the flame and not due to the decrease in oxygen concentration, and both the oil flow rate and the air flow rate are returned to the original state. If the flame current If is smaller than the automatic fire extinguishing flame current If1, it is judged that the oxygen concentration of the combustion air has reached the dangerous range. Control the burner to automatically extinguish the fire.
【０００８】[0008]
小燃焼量運転時にフレームロッドの検知する炎電流Ifが警告用炎電流If2より 低く検出されても、バーナへの油量と風量の双方が所定時間Ｔの間だけ増加し、 その所定時間Ｔ中炎形成が安定して炎電流が元の正常値に復して炎電流Ifが警告 用炎電流If2より大きい時は、炎電流の低下の原因が単に炎の動揺によるもので あって酸素濃度低下によるものではないと判断されて油量風量共に元の状態に戻 されて正規の小燃焼量運転が続行され、、逆に小さい時は形成される炎が単に炎 の動揺によるだけではなくて酸素不足が原因でリフトの傾向を呈し始めたと判断 されて警告手段（換気等を促す警告手段）が駆動されたまま増加した油量と風量 が保たれ、更に炎電流Ifが自動消火用炎電流If1より小さい時は酸素濃度の低下 の程度が危険域に達したと判断されてバーナが自動消火させられるので、上述し たような誤動作を起こさなくなる。 Even if the flame current If detected by the flame rod is detected to be lower than the warning flame current If2 during small combustion operation, both the oil amount and the air flow rate to the burner increase for a prescribed time T, and during that prescribed time T. When the flame formation is stable and the flame current returns to the normal value and the flame current If is larger than the warning flame current If2, the cause of the decrease in flame current is simply due to the fluctuation of the flame and the decrease in oxygen concentration. It is judged that it is not due to the above, the oil amount and the air amount are both returned to the original state, and the regular small combustion amount operation is continued.On the contrary, when it is small, the formed flame is not only due to the fluctuation of the flame but also the oxygen It is determined that the lift tendency has begun to occur due to the shortage, and the increased oil amount and air volume are maintained while the warning means (warning means for promoting ventilation, etc.) is driven, and the flame current If is the flame current If1 for automatic fire extinguishing. When smaller, the degree of decrease in oxygen concentration reached the critical level Since the determined by the burner is caused to automatically extinguish, not causing a malfunction as described above.
【０００９】[0009]
本考案の一実施例を図１〜図５により説明する。 An embodiment of the present invention will be described with reference to FIGS.
【００１０】 図１および図２において、１は灯油供給用給油タンク、１Ａは油受皿で給油タ ンク１からの給油を受け取っている。２は油量可変なポンプで油受皿１Ａに取り 付けてある。３は灯油を気化させる気化器でポンプ２と連通している。４は気化 ガスが噴出するノズルで気化器３に設けてある。５はバーナで、このバーナ５は 気化器３のノズル４に対設され、気化ガスと一次空気を吸引混合してバーナ５上 部に設けられた炎孔アミ６より噴出させ、燃焼させる。７はバーナベースで、背 面下部に燃焼用一次、二次空気を取り入れるための孔７Ａと、バーナ５固定部に は二次空気をバランス良くバーナ５の周囲に送るため多数の小孔７Ｂとを設けて ある。８は燃焼用空気を風量可変に送風する送風機、９は燃焼温風暖房器の本体 である。そして、10は例えばマイコンからなる制御回路で、表示ランプ、ブザー よりなる警告手段12を有して異常燃焼時警告する。制御回路10の出力はポンプ２ 、送風機８に接続されて、最大燃焼量から最小燃焼量までの各燃焼モードに対応 して灯油を供給するためポンプ２を制御し、かつポンプ２が供給する油量に対応 した風量を送風するため送風機８を制御する。11は炎電流検出用フレームロッド で、バーナ５の上方に設けてあり、その出力は制御回路10に接続されている。In FIG. 1 and FIG. 2, 1 is an oil supply tank for kerosene supply, and 1 A is an oil pan for receiving oil supply from the oil supply tank 1. 2 is a pump with a variable oil amount, which is attached to the oil pan 1A. A vaporizer 3 vaporizes kerosene and communicates with the pump 2. Reference numeral 4 denotes a nozzle for ejecting vaporized gas, which is provided in the vaporizer 3. Reference numeral 5 denotes a burner. The burner 5 is opposed to the nozzle 4 of the vaporizer 3. The vaporized gas and the primary air are suction-mixed and ejected from a flame hole ami 6 provided on the upper portion of the burner 5 for combustion. The burner base 7 has a hole 7A for taking in primary and secondary air for combustion in the lower part of the back surface, and a large number of small holes 7B in the fixed part of the burner 5 for sending the secondary air around the burner 5 in good balance. Is provided. 8 is a blower that blows the combustion air in a variable amount, and 9 is the main body of the combustion warm air heater. Reference numeral 10 is a control circuit including, for example, a microcomputer, which has a warning means 12 including a display lamp and a buzzer to warn when abnormal combustion occurs. The output of the control circuit 10 is connected to the pump 2 and the blower 8 to control the pump 2 to supply kerosene corresponding to each combustion mode from the maximum combustion amount to the minimum combustion amount, and the oil supplied by the pump 2 The blower 8 is controlled to blow the air volume corresponding to the volume. A flame current detecting frame rod 11 is provided above the burner 5 and its output is connected to the control circuit 10.
【００１１】 次に本実施例の動作について図３〜図５により説明する。Next, the operation of this embodiment will be described with reference to FIGS.
【００１２】 制御回路10に予め異常燃焼時の警告用炎電流If2（例えば6.6μA）とこの炎電 流If2より低い自動消火用炎電流If1（例えば5.4μA）を設定(記憶)しているもの として説明する。In the control circuit 10, a warning flame current If2 (eg 6.6 μA) for abnormal combustion and an automatic extinguishing flame current If1 (eg 5.4 μA) lower than this flame current If2 are set (stored) in advance. As described below.
【００１３】 図３に示すフローチャートのように、油量F1、風量Q1（例えば2.2cc／min、2. 20m3／min）での小燃焼量運転時、常に炎電流Ifを検出している。S1において、 制御回路10がIf1＜If≦If2と判断した時（時点t）、例えば暖房器が設置された 部屋のドアの開閉等による外乱によりフレームロッド11の検知した炎電流Ifが低 下していてYESなら、炎形成を安定させて炎電流Ifの振らつきを無くし正しく炎 電流を検出させるために、油量F1をF2（例えば2.2→3.4cc／min）に、風量Q1をQ 2（例えば2.20→2.27m3／min）に増加させて図４に示すように所定時間Ｔ（例え ば20秒）だけ燃焼させる。もしNOならその状態で燃焼を継続する。S2において、 制御回路10がIf＞If2と判断した時、図５に示すように炎電流Ifが増加してYESな ら図４（If復帰時）に示すよに油量F2を元のF1に、風量Q2を元のQ1に戻して燃焼 を継続させる。もしS2においてNOの場合は、S3において、制御回路10がIf1＜If ≦If2と判断してYESなら、図４（If非復帰時）に示すように警告手段12を動作さ せる。もしNOの場合は、S4において、制御回路10がIf≦If1と判断してYESなら、 バーナ５を自動消火させる。もしNOの場合はS2に戻る。このように燃焼運転動作 を制御する制御回路10で構成したので誤動作しない安全な燃焼温風暖房器を提供 できる。As shown in the flow chart of FIG. 3, the flame current If is constantly detected during the small combustion amount operation with the oil amount F1 and the air amount Q1 (eg 2.2 cc / min, 2.20 m 3 / min). In S1, when the control circuit 10 determines If1 <If ≦ If2 (time point t), the flame current If detected by the frame rod 11 is lowered due to disturbance such as opening and closing the door of the room where the heater is installed. However, if YES, in order to stabilize the flame formation and eliminate the fluctuation of the flame current If to detect the flame current correctly, the oil amount F1 is set to F2 (eg 2.2 → 3.4cc / min) and the air flow Q1 is set to Q 2 ( For example, it is increased from 2.20 to 2.27 m 3 / min) and burned for a predetermined time T (for example, 20 seconds) as shown in FIG. If NO, continue combustion in that state. In S2, when the control circuit 10 determines If> If2, the flame current If increases and YES as shown in FIG. 5, and the oil amount F2 is returned to the original F1 as shown in FIG. 4 (when returning to If). , Return the air volume Q2 to the original Q1 and continue combustion. If NO in S2, the control circuit 10 determines in Step S3 that If1 <If ≦ If2, and if YES, the warning means 12 is operated as shown in FIG. 4 (when If is not restored). If NO, in S4, the control circuit 10 judges If≤If1 and if YES, the burner 5 is automatically extinguished. If NO, return to S2. Since the control circuit 10 for controlling the combustion operation operation is configured as described above, it is possible to provide a safe combustion warm air heater that does not malfunction.
【００１４】 又、低酸素濃度環境下に於いても、一旦炎電流IfがIf2レベルまで低下すれば 、油量F1をF2に、風量Q1をQ2に増加させて所定時間Ｔだけ燃焼させるので、低酸 素濃度環境下ではバーナ５の燃焼は益々リフト傾向になり、更に炎電流Ifが低下 して自動消火用炎電流If1より小さくなれば、バーナ５を自動消火させる。Even under a low oxygen concentration environment, once the flame current If drops to the level If2, the oil amount F1 is increased to F2 and the air amount Q1 is increased to Q2, and the combustion is performed for a predetermined time T. In a low oxygen concentration environment, the combustion of the burner 5 tends to lift more and more, and if the flame current If further decreases and becomes smaller than the flame current If1 for automatic fire extinguishing, the burner 5 is automatically extinguished.
【００１５】 以上のことを取纏めると、上述の燃焼制御シーケンスを採用することにより、 通常の酸素濃度環境下（約酸素濃度20.9％）では、ドアの開閉等にともなう風の 発生によって炎が揺れて炎電流が一時的に低下しても、直ちに炎形成が安定する ので、警報を発したりあるいは燃焼運転を停止させるなどの誤動作を起こす不具 合がなくなる。To summarize the above, by adopting the combustion control sequence described above, under normal oxygen concentration environment (approximately oxygen concentration 20.9%), the flame sways due to the generation of wind accompanying the opening / closing of the door. Even if the flame current is temporarily reduced, the flame formation stabilizes immediately, so there is no need for malfunctions such as issuing an alarm or stopping the combustion operation.
【００１６】 又、上述の燃焼制御シーケンスのもとで、油量風量共に増加させるので、低酸 素濃度環境下では炎のリフトの傾向が一層助長されて炎形成が益々不安定になる ことはあっても、安定することはなく、単なる風による炎の一時的なゆらぎでは なく酸素濃度の低下が生じていりことが確実に検出できる。そして予め設定され た自動消火用炎電流値If1を下回った場合には、消火モードを作動させて安全確 実に燃焼運転を停止させることができる。Further, under the above combustion control sequence, since both the oil amount and the air amount are increased, the tendency of the lift of the flame is further promoted in a low oxygen concentration environment, and the flame formation becomes more and more unstable. However, it is not stable, and it is possible to reliably detect that the oxygen concentration is decreasing, not just the temporary fluctuation of the flame due to wind. If the preset flame extinguishing flame current value If1 falls, the fire extinguishing mode can be activated to stop the combustion operation safely and accurately.
【００１７】[0017]
以上本考案によると、燃焼中にフレームロッドが検知する炎電流Ifが警告用炎 電流If2より低い時は、バーナへの油量と風量を所定時間Ｔの間だけ増加させる ので、正常な酸素濃度環境下では炎形成は直ちに安定するので、運転を続行する ことに支障のないことが確認できる。 According to the present invention, when the flame current If detected by the flame rod during combustion is lower than the warning flame current If2, the amount of oil and air flow to the burner is increased for a predetermined time T, so that the normal oxygen concentration is increased. In the environment, the flame formation stabilizes immediately, so it can be confirmed that there is no problem in continuing operation.
【００１８】 他方、炎形成が安定せずに依然として炎電流Ifが警告用炎電流If2以下かある いは自動消火用炎電流値If1より低い時には、室内空気の換気を促す警報を発す るなり若しくは燃焼運転の停止動作を開始するので、室内環境の更なる悪化を防 止することができる。On the other hand, when the flame formation is not stable and the flame current If is still less than or equal to the warning flame current If2 or lower than the flame extinguishing flame current value If1, an alarm prompting ventilation of room air must be issued or Since the stop operation of the combustion operation is started, it is possible to prevent further deterioration of the indoor environment.
【図１】本考案の一実施例を示す燃焼温風暖房器の燃焼
系構成図。FIG. 1 is a configuration diagram of a combustion system of a combustion warm air heater showing an embodiment of the present invention.
【図２】本考案の一実施例を示す燃焼温風暖房器の構造
図。FIG. 2 is a structural diagram of a combustion warm air heater showing an embodiment of the present invention.
【図３】本考案の一実施例を示す燃焼温風暖房器動作の
一部を示すフローチャート。FIG. 3 is a flowchart showing a part of the operation of the combustion warm air heater according to the embodiment of the present invention.
【図４】本考案の主要部品のタイミングチャート。FIG. 4 is a timing chart of main parts of the present invention.
【図５】本考案の油量・熱量Ｆに対する風量Ｑ、炎電流I
fの関係図。FIG. 5: Air volume Q and flame current I with respect to the amount of oil and heat F of the present invention
Relationship diagram of f.
２ ポンプ ３ 気化器 ５ バーナ ８ 送風機 １０ 制御回路 １１ フレームロッド １２ 警告手段 2 pump 3 vaporizer 5 burner 8 blower 10 control circuit 11 frame rod 12 warning means
Claims (1)
の気化器(3)と対設したバーナ(5)と、液体燃料を前記気
化器(3)に供給するポンプ(2)と、燃焼用空気を前記バー
ナ(5)に供給する送風機(8)と、前記バーナ(5)に形成さ
れる炎の炎電流Ifを検出するフレームロッド(11)と、警
告手段(12)と、室内空気の換気を促す等の判断基準とな
る警告用炎電流If2と暖房運転を停止させるための判断
基準となる前記警告用炎電流If2より低い自動消火用炎
電流If1とを予め設定しておくとともに、小燃焼量運転
時に検出される前記炎電流Ifが前記警告用炎電流If2よ
り低い時はまず前記バーナに供給される油量と風量の双
方を所定時間Ｔの間だけ増加させ、その所定時間Ｔ中に
検出される炎電流Ifが前記警告用炎電流If2より大きく
なれば油量と風量を元に戻して小燃焼量運転を継続さ
せ、逆に前記炎電流Ifが小さいままである時は前記警告
手段を動作させつつ増加させた油量と風量を保って小燃
焼量運転を継続させ、更に前記炎電流Ifが前記自動消火
用炎電流If1より小さい時は暖房運転を停止させるよう
燃焼運転動作を制御する制御回路(10)とを備えたことを
特徴とする燃焼温風暖房器。1. A vaporizer (3) for vaporizing liquid fuel, a burner (5) opposite to the vaporizer (3), and a pump (2) for supplying liquid fuel to the vaporizer (3). A blower (8) for supplying combustion air to the burner (5), a frame rod (11) for detecting a flame current If of a flame formed in the burner (5), and a warning means (12), The warning flame current If2, which serves as a criterion for urging ventilation of indoor air, etc., and the automatic flame extinguishing flame current If1, which is lower than the warning flame current If2, which serves as a criterion for stopping the heating operation, are set in advance. At the same time, when the flame current If detected during the small combustion amount operation is lower than the warning flame current If2, first, both the amount of oil and the amount of air supplied to the burner are increased for a predetermined time T, and the predetermined amount is increased. When the flame current If detected during the time T becomes larger than the warning flame current If2, the oil amount and the air amount are returned to the original state and the small combustion amount operation is performed. On the contrary, when the flame current If is still small, the warning means is operated while maintaining the increased oil amount and air amount to continue the small combustion amount operation, and further, the flame current If is automatically extinguished. A combustion warm air heater, comprising: a control circuit (10) for controlling a combustion operation so that the heating operation is stopped when the flame current is smaller than If1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991075911U JP2603606Y2 (en) | 1991-09-20 | 1991-09-20 | Combustion hot air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991075911U JP2603606Y2 (en) | 1991-09-20 | 1991-09-20 | Combustion hot air heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0534437U true JPH0534437U (en) | 1993-05-07 |
| JP2603606Y2 JP2603606Y2 (en) | 2000-03-15 |
Family
ID=13589993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991075911U Expired - Fee Related JP2603606Y2 (en) | 1991-09-20 | 1991-09-20 | Combustion hot air heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2603606Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210086036A (en) * | 2019-12-31 | 2021-07-08 | 주식회사 경동나비엔 | Water heating apparatus and control method of the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61159030A (en) * | 1984-12-28 | 1986-07-18 | Toshiba Heating Appliances Co | Combustion control device |
| JPS62142924A (en) * | 1985-12-17 | 1987-06-26 | Matsushita Electric Ind Co Ltd | Combustion control device |
| JPS62202932A (en) * | 1986-02-28 | 1987-09-07 | Mitsubishi Electric Corp | Controlling device for heating apparatus |
-
1991
- 1991-09-20 JP JP1991075911U patent/JP2603606Y2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61159030A (en) * | 1984-12-28 | 1986-07-18 | Toshiba Heating Appliances Co | Combustion control device |
| JPS62142924A (en) * | 1985-12-17 | 1987-06-26 | Matsushita Electric Ind Co Ltd | Combustion control device |
| JPS62202932A (en) * | 1986-02-28 | 1987-09-07 | Mitsubishi Electric Corp | Controlling device for heating apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210086036A (en) * | 2019-12-31 | 2021-07-08 | 주식회사 경동나비엔 | Water heating apparatus and control method of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2603606Y2 (en) | 2000-03-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |