JPH0271009A - Combustion control and combustion control device - Google Patents
Combustion control and combustion control deviceInfo
- Publication number
- JPH0271009A JPH0271009A JP63222005A JP22200588A JPH0271009A JP H0271009 A JPH0271009 A JP H0271009A JP 63222005 A JP63222005 A JP 63222005A JP 22200588 A JP22200588 A JP 22200588A JP H0271009 A JPH0271009 A JP H0271009A
- Authority
- JP
- Japan
- Prior art keywords
- burner
- combustion
- burner motor
- rotational speed
- rotation speed
- 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 62
- 239000000446 fuel Substances 0.000 claims abstract description 46
- 239000003921 oil Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- 239000000295 fuel oil Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 238000013021 overheating Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000007664 blowing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/08—Microprocessor; Microcomputer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2233/00—Ventilators
- F23N2233/06—Ventilators at the air intake
- F23N2233/08—Ventilators at the air intake with variable speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/30—Pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/08—Regulating air supply or draught by power-assisted systems
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)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
この発明は灯油やガスを燃料とする温風暖房機、ファン
ヒータ、給湯機等の燃焼機器に使用される燃焼制御方法
及び燃焼制御装置に関する。Detailed Description of the Invention (a) Industrial Application Field This invention relates to a combustion control method and a combustion control device used in combustion equipment such as hot air heaters, fan heaters, and water heaters that use kerosene or gas as fuel. Regarding.
（ロ）従来の技術
従来、例えば、特公昭６２−３３４９６号公報に開示さ
れているように、灯油を燃料とする温風暖房機では暖房
負荷に応じてバーナモータの回転数を制御し、かつ、バ
ーナモータの回転数に応じて燃料ポンプの送油量を増減
させることにより、空燃比を略一定とし、バーナの燃焼
状態を良好に保ちながら燃焼量を強弱切換えるようにし
ている。(B) Prior Art Conventionally, as disclosed in Japanese Patent Publication No. 62-33496, for example, in a hot air heater that uses kerosene as fuel, the rotation speed of the burner motor is controlled according to the heating load, and By increasing or decreasing the amount of oil fed by the fuel pump in accordance with the rotational speed of the burner motor, the air-fuel ratio is kept approximately constant, and the combustion amount is switched between high and low levels while maintaining a good combustion state of the burner.
（ハ）発明が解決しようとする課題
ところで、この種の燃焼機器では暖房負荷に対するバー
ナの最大燃焼量及び最小燃焼量が予め設定され、燃焼量
に見合った形状、大きさのバーナが搭載されている。ま
た、これに伴ってバーナモータの最大回転数及び最小回
転数と、燃料ポンプの最大送油量及び最小送油量とが定
められている。しかしながら、近年、着火時において、
バーナモータの回転数と燃料ポンプの送油量とをそれぞ
れ最大設定値より大きくし、着火性を高めるようになっ
てきた。また、通常の燃焼中にノイズ等の影響でバーナ
の燃焼量が最大燃焼量を超えることがあった。このよう
にして、バーナの燃焼量が設定された最大燃焼量を超え
ると、所定の燃焼量に戻るのに時間がかかるため、バー
ナが変形したり、バーナの耐久性が損われる心配があっ
た。もちろん、燃焼量に対して十分に余裕のあるバーナ
を使用すれば、このような問題は解消されるが、コスト
高となる欠点があった。(C) Problems to be Solved by the Invention Incidentally, in this type of combustion equipment, the maximum combustion amount and minimum combustion amount of the burner for the heating load are set in advance, and a burner of a shape and size commensurate with the combustion amount is installed. There is. Further, in accordance with this, the maximum rotation speed and minimum rotation speed of the burner motor, and the maximum oil feed amount and minimum oil feed amount of the fuel pump are determined. However, in recent years, when igniting,
The number of revolutions of the burner motor and the amount of oil fed by the fuel pump are now set higher than their respective maximum settings to improve ignitability. Furthermore, during normal combustion, the combustion amount of the burner sometimes exceeded the maximum combustion amount due to the influence of noise and the like. In this way, if the combustion amount of the burner exceeds the set maximum combustion amount, it takes time to return to the predetermined combustion amount, so there is a risk that the burner may be deformed or its durability may be impaired. . Of course, if a burner with sufficient combustion capacity is used, this problem can be solved, but it has the drawback of increasing costs.
この発明は上述した事実に鑑みてなされたものであり、
燃焼量に対して十分余裕のあるバーナを用いなくてもバ
ーナの耐久性が高められるようにすることを目的とする
。This invention was made in view of the above facts,
To improve the durability of a burner without using a burner having sufficient margin for combustion amount.
（ニ）課題を解決するための手段
この発明では、負荷に応じてバーナモータの回転数とバ
ーナへの燃料供給量とを増減させ、空燃比を略一定に保
ちながらバーナでの燃焼量を制御する燃焼制御方法にお
いて、バーナモータの回転数が設定値より高いとき、バ
ーナモータの回転数の変化率に対する燃料供給量の変化
率を小さくする構成である。(d) Means for solving the problem In this invention, the number of revolutions of the burner motor and the amount of fuel supplied to the burner are increased or decreased according to the load, and the amount of combustion in the burner is controlled while keeping the air-fuel ratio substantially constant. In the combustion control method, when the number of rotations of the burner motor is higher than a set value, the rate of change in the amount of fuel supplied with respect to the rate of change in the number of rotations of the burner motor is reduced.
また、この発明の燃焼制御装置は、バーナと、このバー
ナに燃焼用空気を送風するバーナモータと、バーナに燃
料油を送油する燃料ポンプと、バーナモータの回転数を
検出する回転数検知器と、負荷に応じてバーナモータの
回転数制御を行い、かつ、回転数検知器の回転数信号と
略比例するように燃料ポンプの送油量を制御するマイク
ロコンピュータとを備え、このマイクロコンピュータに
はバーナモータの回転数が設定値より高いとき、バーナ
モータの回転数に対する燃料ポンプの送油量の比例定数
を小さくする補正手段が設けられているものである。The combustion control device of the present invention also includes a burner, a burner motor that blows combustion air to the burner, a fuel pump that sends fuel oil to the burner, and a rotation speed detector that detects the rotation speed of the burner motor. The microcomputer is equipped with a microcomputer that controls the rotation speed of the burner motor according to the load, and also controls the oil supply amount of the fuel pump so that it is approximately proportional to the rotation speed signal of the rotation speed detector. When the rotation speed is higher than a set value, a correction means is provided that reduces the proportionality constant of the amount of oil fed by the fuel pump to the rotation speed of the burner motor.
さらにまた、この発明は上述した燃焼制御回路において
、マイクロコンピュータの外部にバーナモータの最大回
転数及び最小回転数と、燃料ポンプの最大送油量及び最
小送油量を決める設定回路を設け、バーナモータの回転
数が設定された最大回転数より高いとき、補正手段によ
る比例定数の変更がなされるようにしたものである。Furthermore, in the combustion control circuit described above, the present invention provides a setting circuit outside the microcomputer that determines the maximum and minimum rotation speeds of the burner motor and the maximum and minimum oil supply amounts of the fuel pump. When the rotational speed is higher than the set maximum rotational speed, the proportionality constant is changed by the correction means.
（ホ）作用
この発明の燃焼制御方法によれば、燃焼量が大きくなり
、バーナモータの回転数が設定値より高くなると、燃焼
用空気量の変化率に対する燃料供給量の変化率が小さく
なる。このため、燃焼量の増加が抑制され、バーナの過
熱が防止されるばかりでなく、変化率の適度な調整によ
り炎の吹き消えも防止きれる。(E) Effect: According to the combustion control method of the present invention, when the combustion amount becomes large and the rotational speed of the burner motor becomes higher than the set value, the rate of change in the amount of fuel supply with respect to the rate of change in the amount of combustion air becomes smaller. Therefore, not only is the increase in combustion amount suppressed and overheating of the burner is prevented, but also the flame is prevented from blowing out by appropriately adjusting the rate of change.
また、この発明の燃焼制御装置によれば、マイクロコン
ピュータを用いて負荷に応じた的確な空燃比制御を行う
ことが可能であり、バーナモータの回転数が設定値より
高いときには燃焼量の増加が抑制され、バーナの過熱が
防止されるばかりでなく、比例定数の適度な補正によっ
て炎の吹き消えも防止される。Further, according to the combustion control device of the present invention, it is possible to perform accurate air-fuel ratio control according to the load using a microcomputer, and when the rotation speed of the burner motor is higher than a set value, an increase in combustion amount can be suppressed. This not only prevents the burner from overheating, but also prevents the flame from blowing out by appropriately correcting the proportionality constant.
さらにまた、マイクロコンピュータの外部にバーナモー
タの最大回転数及び最小回転数と、燃料ポンプの最大回
転数及び最小回転数とを決める設定回路を設け、この設
定回路によって設定されたバーナモータの最大回転数を
基準として比例定数の補正を行うことにより、マイクロ
コンピュータの内部構成を複雑にすることなく、バーナ
の特性に合わせた空燃比制御が可能となる。また、通常
燃焼中は空燃比が補正されることがないので、極力、良
好な燃焼状態が維持される。Furthermore, a setting circuit that determines the maximum and minimum rotation speeds of the burner motor and the maximum and minimum rotation speeds of the fuel pump is provided outside the microcomputer, and the maximum rotation speed of the burner motor set by this setting circuit is controlled. By correcting the proportionality constant as a reference, it becomes possible to control the air-fuel ratio in accordance with the characteristics of the burner without complicating the internal configuration of the microcomputer. Furthermore, since the air-fuel ratio is not corrected during normal combustion, a good combustion state is maintained as much as possible.
（へ）実施例 以下、この発明を図面に示す実施例について説明する。(f) Example Hereinafter, embodiments of the present invention shown in the drawings will be described.
第１図はこの発明を適用した温風暖房機の燃焼制御装置
を示すものである。第１図において、（１）はＡ／Ｄ変
換手段を内蔵したマイクロコンピュータ（以下、マイコ
ンという）、（２）はマイコン（１）にオン、オフの操
作信号を供給する操作スイッチ、（３）はアップキー（
３Ａ）及びダウンキー（３Ｂ）よりなる温度設定器、（
４）はサーミスタ等の室温検知器、（５）はバーナ、（
６）はバーナファン（図示せず）を有し、このバーナフ
ァンによってバーナ（５）に燃焼用空気を送風する隈取
りモータ等のバーナモータ、（７）はマイコン（１）か
らの回転数制御信号に基いてバーナモータ（６）を位相
制御する位相制御回路、（８）はバーナモータ（６）の
回転数を検出する回転数検知器、（９）はバーナ（５）
に燃料油を送油する電磁ポンプ等の燃料ポンプ、（１０
）はマイコン（１）からの燃料制御信号に基いて燃料ポ
ンプ（９）を所定の周波数で駆動するポンプ駆動回路、
（１１）はバーナ（５）にて温められた空気を室内へ吐
出させる送風モータ、（１２）はデータ設定回路である
。FIG. 1 shows a combustion control device for a hot air heater to which the present invention is applied. In Fig. 1, (1) is a microcomputer with built-in A/D conversion means (hereinafter referred to as microcomputer), (2) is an operation switch that supplies on/off operation signals to microcomputer (1), and (3) is the up key (
3A) and a down key (3B), a temperature setting device (
4) is a room temperature detector such as a thermistor, (5) is a burner, (
6) has a burner fan (not shown), and a burner motor such as a shaded motor that blows combustion air to the burner (5) by this burner fan; (8) is a rotation speed detector that detects the rotation speed of the burner motor (6), and (9) is a burner (5).
A fuel pump such as an electromagnetic pump that sends fuel oil to (10
) is a pump drive circuit that drives the fuel pump (9) at a predetermined frequency based on the fuel control signal from the microcomputer (1);
(11) is a blower motor that discharges air warmed by the burner (5) into the room, and (12) is a data setting circuit.
このデータ設定回路（１２）は抵抗（１３）ないしく２
ｏ）を有し、直流定電圧■ＤＤをそれぞれ抵抗（１３）
（１４）と抵抗（１５）（１６）と抵抗（１７）（１８
）と抵抗（１９）（２０）とで分圧することにより、こ
れらの接続点（２１）ないしく２４）の電圧をマイコン
（１）の入力ボート（Ａ、）ないしくＡ、〉に供給する
ものである。入力ボート（Ａ、）ないしくＡ、）の電圧
はマイコン（１）内部でＡ／Ｄ変換され、それぞれのデ
ジタル信号はバーナモータ（６）の最大回転数Ｆ ＩＩ
ＭＡ！、バーナモータ（６）の最ノ」＼回転数Ｆ□１８
％燃料ポンプ（９）の最大周波数ＰＰＭ□、及び燃料ポ
ンプ（９）の最小周波数ＰＰＭＩＮのデータとしてマイ
コン（１）に記憶される。This data setting circuit (12) is connected to a resistor (13) or 2
o) with a DC constant voltage ■DD and a resistor (13) respectively.
(14) and resistance (15) (16) and resistance (17) (18
) and resistors (19) and (20) to supply the voltage at these connection points (21) or 24) to the input port (A, ) or A, 〉 of the microcomputer (1). It is. The voltage of the input boat (A,) or A,) is A/D converted inside the microcomputer (1), and each digital signal is converted to the maximum rotation speed F II of the burner motor (6).
MA! , the maximum number of burner motors (6)\revolutions F□18
% is stored in the microcomputer (1) as data of the maximum frequency PPM□ of the fuel pump (9) and the minimum frequency PPMIN of the fuel pump (9).
操作スイッチ（２〉によってオン操作が行われると、マ
イコン（１）は気化ヒータ（図示せず）に通電し、バー
ナ（５）の気化部の予熱を開始する。気化部が十分に加
熱されると、バーナモータ（６）及び燃料ポンプ（９）
が順次起動され、バーナ（５）ではブリパージが行われ
てから点火装置（図示せず）によって着火され、燃焼が
開始する。マイコン（１）は温度設定器（３）によって
予め設定された希望温度と室温検知器（４）によって検
出された室温との差温に応じて負荷の大ききを判別し、
負荷に適した燃焼量Ｑを、設定回路（１２）の設定デー
タによって決まるＱ ＷＡＸとＱ Ｍ Ｉ Ｎとの間で
第２図に示すように多段階に、又は第３図に示すように
連続的に定める。そして、その燃焼に必要な送風量が得
られるようにバーナモータ（６）の回転数制御信号を位
相制御回路（７）に与え、バーナモータ（６）の回転数
制御を行う、また、バーナモータ（６）の回転数を回転
数検知器（８）の信号によって検出し、実際の回転数が
設定回転数と等しくなるようにフィードバック制御を行
う、また、送風量に見合った送油量が得られるように燃
料制御信号をポンプ駆動回路（１０）に与え、燃料ポン
プ（９）の周波数制御を行う。When the operation switch (2> is turned on), the microcomputer (1) energizes the vaporization heater (not shown) and starts preheating the vaporization section of the burner (5).The vaporization section is sufficiently heated. , burner motor (6) and fuel pump (9)
The burners (5) are sequentially activated, and after the burner (5) is ignited by an ignition device (not shown), combustion begins. The microcomputer (1) determines the magnitude of the load according to the difference in temperature between the desired temperature preset by the temperature setting device (3) and the room temperature detected by the room temperature detector (4).
The combustion amount Q suitable for the load is set between Q WAX and Q MIN determined by the setting data of the setting circuit (12) in multiple stages as shown in Fig. 2, or continuously as shown in Fig. 3. Determine. Then, the rotation speed control signal of the burner motor (6) is given to the phase control circuit (7) to control the rotation speed of the burner motor (6) so that the amount of air blown necessary for the combustion can be obtained. The rotation speed is detected by the signal from the rotation speed detector (8), and feedback control is performed so that the actual rotation speed becomes equal to the set rotation speed. A fuel control signal is given to the pump drive circuit (10) to control the frequency of the fuel pump (9).
すなわち、ポンプ周波数をＦＰ％バーナモータ回転数を
Ｆ、とすると、マイコン（１）は設定回路（１２）によ
る設定データによって定数ａ１β。を０．０式で定め、
さらに０式によってポンプ周波数を定める。That is, when the pump frequency is FP% and the burner motor rotation speed is F, the microcomputer (1) sets a constant a1β according to the setting data from the setting circuit (12). is determined by the 0.0 formula,
Furthermore, the pump frequency is determined by equation 0.
β・＝ＦＰＭＡ！ ａＦｉ＋Ｍ□ ・・・・・・・
・・・・・ ■Ｆｐ＝ａＦ、＋β。 ・・・・旧
・・・・・ ■このため、ポンプ周波数Ｆ、が第４図に
示すようにバーナモータ回転数Ｆ、に対して比例的に変
化し、バーナ（５）では空燃比が一定に保たれながら、
負荷に見合った燃焼量の燃焼が行われる。β・=FPMA! aFi+M□・・・・・・・・・
... ■Fp=aF, +β. ...Old... ■For this reason, the pump frequency F changes proportionally to the burner motor rotation speed F, as shown in Figure 4, and the air-fuel ratio remains constant in the burner (5). While being preserved,
Combustion is performed in an amount commensurate with the load.
燃焼開始当初に着火性を高めるために、マイコン（１）
がＦ□。より大きな回転数信号を発した場合、或いはノ
イズ等の外乱の影響でＦ３がＦ’１ＭＡｌより大きくな
った場合、マイコン（１）は第５図に示すように、回転
数検知器（８）からの信号に基き、比例定数ａをａ／ｋ
（ｋは例えば２又は３等の定数）に変更する（補正手段
が内蔵きれている）、このような場合、マイコン（１）
は０式及び０式に基いてポンプ周波数Ｆｐを制御する。In order to improve ignitability at the beginning of combustion, a microcomputer (1)
is F□. When a larger rotation speed signal is emitted, or when F3 becomes larger than F'1MAl due to the influence of disturbances such as noise, the microcomputer (1) outputs a signal from the rotation speed detector (8) as shown in Figure 5. Based on the signal of , the proportionality constant a is a/k
(k is a constant such as 2 or 3) (correction means is built-in). In such a case, the microcontroller (1)
controls the pump frequency Fp based on the 0 formula and the 0 formula.
Ｆ、−一・Ｆ、＋β、 ■に
このように、Ｆ ｙ＋ ＞ Ｆ ＩＭＡＩになると、Ｆ
８≦Ｆ！ＩＭＡＩのときよりも比例定数が小さくなり、
燃焼量の増加が抑制され、バーナ（５）の過熱が防止さ
れる。F, -1・F, +β, In this way, when F y+ > F IMAI, F
8≦F! The proportionality constant is smaller than when using IMAI,
An increase in the amount of combustion is suppressed, and overheating of the burner (5) is prevented.
もちろん、ｋの値を大きくし、比例定数を０に近づけれ
ば、燃焼量の増加は小さくなるが、炎の吹き消えの心配
がある。そこで、ｋの値を適度に調整することにより、
炎の吹き消えを防止でき、燃焼状態が悪化する心配もな
い。Of course, if the value of k is increased and the proportionality constant is brought closer to 0, the increase in combustion amount will be smaller, but there is a risk that the flame will blow out. Therefore, by adjusting the value of k appropriately,
The flame can be prevented from blowing out, and there is no need to worry about the combustion condition worsening.
尚、上述した実施例では最大燃焼量Ｑ ＭＡＸ及び最小
燃焼量Ｑ、、、を設定するための設定回路（１２）をマ
イコン（１）の外部に設けたが、これはマイコン（１）
の内部構成を簡単にし、バーナ（５）の特性に合わせた
空燃比制御が行えるようにするためであり、空燃比制御
に必要なデータを予めマイコン（１〉に記憶させても良
い。また、空燃比の変更点をＦ ！１ＭＡ！としたが、
これは通常の燃焼中での空燃比の変更を極力避けるため
であり、Ｆ ＩＩＭＡ！よりも多少ずらしても問題はな
い。In the above embodiment, the setting circuit (12) for setting the maximum combustion amount Q MAX and the minimum combustion amount Q, . . . was provided outside the microcomputer (1).
This is to simplify the internal configuration of the burner (5) and to perform air-fuel ratio control in accordance with the characteristics of the burner (5). Data necessary for air-fuel ratio control may be stored in advance in the microcomputer (1). The change in air-fuel ratio was set to F!1MA!, but
This is to avoid changing the air-fuel ratio during normal combustion as much as possible, and F IIMA! There is no problem even if it is slightly shifted.
（ト）発明の効果
この発明は以上のように構成きれているので、青火時の
ように送風量（燃焼量）を−時的に増加させる場合や送
風量が外乱等の影響で増加した場合、燃焼用空気量の変
化率に対する燃料供給量の変化率を小さくして燃焼量の
増加を抑制でき、バーナの過熱を防止できるものである
。このため、燃焼量に対して十分余裕のあるバーナを用
いることなく、バーナの耐久性を高めることができ、経
済性に優れているばかりでなく、空燃比の適度な調節に
よって炎の吹き消えも防止でき、安全性にも富んでいる
。(g) Effects of the Invention Since this invention is configured as described above, it is possible to prevent the air flow from increasing when the amount of air blown (combustion amount) is increased temporarily, such as when burning a green fire, or when the amount of air blown increases due to the influence of disturbances, etc. In this case, the rate of change in the amount of fuel supplied relative to the rate of change in the amount of combustion air can be reduced to suppress an increase in the amount of combustion, thereby preventing the burner from overheating. For this reason, the durability of the burner can be increased without using a burner with sufficient margin for the combustion amount, which is not only economical but also prevents the flame from blowing out by appropriately adjusting the air-fuel ratio. It is preventable and very safe.
また、マイクロコンピュータを用いて燃焼制御装置を構
成することにより、的確な空燃比制御を行いつつ、バー
ナの過熱を防止でき、きらにはマイコンの外部の設定回
路を用いてデータ入力を行うことにより、バーナの特性
に合わせた空燃比制御を行うことができるなど、有用な
ものである。In addition, by configuring the combustion control device using a microcomputer, it is possible to prevent overheating of the burner while performing accurate air-fuel ratio control. This is useful because it allows air-fuel ratio control to match the characteristics of the burner.
第１図はこの発明を適用した温風暖房機の燃焼制御装置
の概略構成説明図、第２図は負荷と燃焼量の関係を示す
説明図、第３図は負荷と燃焼量の関係の他の１例を示す
説明図、第４図はバーナモータ回転数とポンプ周波数の
関係を示す説明図、第５図はマイクロコンピュータの補
正手段の動作を説明するためのフローチャートである。
（１）・・・マイクロコンピュータ、（５）・・・バー
ナ、（６）・・・バーナモータ、 （８）・・・回転数
検知器、（９）・・・燃料ポンプ、 （１２）・・・設
定回路。
第１２Fig. 1 is an explanatory diagram of a schematic configuration of a combustion control device for a hot air heater to which the present invention is applied, Fig. 2 is an explanatory diagram showing the relationship between load and combustion amount, and Fig. 3 is an explanatory diagram showing the relationship between load and combustion amount. FIG. 4 is an explanatory diagram showing the relationship between burner motor rotation speed and pump frequency, and FIG. 5 is a flowchart for explaining the operation of the correction means of the microcomputer. (1)... Microcomputer, (5)... Burner, (6)... Burner motor, (8)... Rotation speed detector, (9)... Fuel pump, (12)...・Setting circuit. 12th
Claims (3)
燃料供給量とを増減させ、空燃比を略一定に保ちながら
バーナでの燃焼量を制御する燃焼制御方法において、バ
ーナモータの回転数が設定値より高いとき、バーナモー
タの回転数の変化率に対する燃料供給量の変化率を小さ
くすることを特徴とする燃焼制御方法。(1) In a combustion control method that increases or decreases the rotation speed of the burner motor and the amount of fuel supplied to the burner according to the load and controls the amount of combustion in the burner while keeping the air-fuel ratio approximately constant, the rotation speed of the burner motor is set. A combustion control method characterized by reducing the rate of change in fuel supply amount relative to the rate of change in rotational speed of a burner motor when the rate of change is higher than the value.
ーナモータと、バーナに燃料油を送油する燃料ポンプと
、バーナモータの回転数を検出する回転数検知器と、負
荷に応じてバーナモータの回転数制御を行い、かつ、回
転数検知器の回転数信号と略比例するように燃料ポンプ
の送油量を制御するマイクロコンピュータとを備え、こ
のマイクロコンピュータにはバーナモータの回転数が設
定値より高いとき、バーナモータの回転数に対する燃料
ポンプの送油量の比例定数を小さくする補正手段が設け
られていることを特徴とする燃焼制御装置。(2) A burner, a burner motor that blows combustion air to the burner, a fuel pump that sends fuel oil to the burner, a rotation speed detector that detects the rotation speed of the burner motor, and a rotation speed detector that rotates the burner motor according to the load. The microcomputer is equipped with a microcomputer that controls the number of rotations of the burner motor and controls the amount of oil sent from the fuel pump so that it is approximately proportional to the rotational speed signal of the rotational speed detector. 1. A combustion control device comprising: a correction means for reducing a proportionality constant of the amount of oil fed by the fuel pump with respect to the rotational speed of the burner motor.
大回転数及び最小回転数と、燃料ポンプの最大送油量及
び最小送油量とを決める設定回路を設け、バーナモータ
の回転数が設定された最大回転数以上のとき、補正手段
による比例定数の変更がなされることを特徴とする特許
請求の範囲第２項記載の燃焼制御装置。(3) A setting circuit is provided outside the microcomputer to determine the maximum and minimum rotation speeds of the burner motor and the maximum and minimum oil supply amounts of the fuel pump, and the burner motor rotation speed is set to the maximum rotation speed. 3. The combustion control device according to claim 2, wherein in the above case, the proportionality constant is changed by the correction means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63222005A JPH0733913B2 (en) | 1988-09-05 | 1988-09-05 | Combustion control method and combustion control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63222005A JPH0733913B2 (en) | 1988-09-05 | 1988-09-05 | Combustion control method and combustion control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0271009A true JPH0271009A (en) | 1990-03-09 |
| JPH0733913B2 JPH0733913B2 (en) | 1995-04-12 |
Family
ID=16775606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63222005A Expired - Fee Related JPH0733913B2 (en) | 1988-09-05 | 1988-09-05 | Combustion control method and combustion control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0733913B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002155983A (en) * | 2000-11-20 | 2002-05-31 | Honda Motor Co Ltd | Mounting structure of hydraulic damper in suspension of vehicle |
| WO2014178409A1 (en) * | 2013-05-01 | 2014-11-06 | 三浦工業株式会社 | Boiler |
-
1988
- 1988-09-05 JP JP63222005A patent/JPH0733913B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002155983A (en) * | 2000-11-20 | 2002-05-31 | Honda Motor Co Ltd | Mounting structure of hydraulic damper in suspension of vehicle |
| WO2014178409A1 (en) * | 2013-05-01 | 2014-11-06 | 三浦工業株式会社 | Boiler |
| JP2014219120A (en) * | 2013-05-01 | 2014-11-20 | 三浦工業株式会社 | Boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0733913B2 (en) | 1995-04-12 |
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