JPH0262780B2 - - Google Patents
Info
- Publication number
- JPH0262780B2 JPH0262780B2 JP61060810A JP6081086A JPH0262780B2 JP H0262780 B2 JPH0262780 B2 JP H0262780B2 JP 61060810 A JP61060810 A JP 61060810A JP 6081086 A JP6081086 A JP 6081086A JP H0262780 B2 JPH0262780 B2 JP H0262780B2
- Authority
- JP
- Japan
- Prior art keywords
- fan
- control circuit
- rotation speed
- proportional control
- circuit
- 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 13
- 239000007789 gas Substances 0.000 description 32
- 238000001514 detection method Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000002737 fuel gas Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- F23N2225/00—Measuring
- F23N2225/04—Measuring pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/10—Sequential burner running
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/14—Fuel valves electromagnetically operated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/16—Fuel valves variable flow or proportional valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
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)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ガスバーナからの燃料ガスに予め空
気を予混合して燃焼させる式の燃焼制御装置に関
する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a combustion control device that premixes air with fuel gas from a gas burner and combusts the mixture.
（従来の技術）
従来この種燃焼制御装置にあつては、ガスノズ
ルａを第５図に示すごとくフアンｂの下流側に臨
ませているため、該フアンｂからの空気とガスノ
ズルａからの燃料ガスとの混合のための距離を充
分に取るために混合室が大型化するの不都合があ
る。(Prior art) In conventional combustion control devices of this type, gas nozzle a faces the downstream side of fan b as shown in FIG. 5, so that air from fan b and fuel gas from gas nozzle a are separated. There is a disadvantage that the mixing chamber has to be enlarged in order to provide a sufficient distance for mixing.
これを解消するには、フアンｂの上流側即ち吸
気口にガスノズルを臨ませることで、混合のため
の距離を大きく取り得ると共に、フアンによる撹
拌作用も働き空気と燃料ガスとの混合を良好にす
ることが考えられる。 To solve this problem, by placing the gas nozzle on the upstream side of fan b, that is, facing the intake port, it is possible to increase the distance for mixing, and the stirring action of the fan also works to improve the mixing of air and fuel gas. It is possible to do so.
（発明が解決しようとする問題点）
しかしかくするときは、吸気口に生じる負圧に
よつてガスノズルからの燃料ガスが過供給と成り
勝で、出湯温度その他の温度に比例して該燃焼装
置の燃焼量を変化させたものでは、特にその燃焼
量を増大すれば、するほどその傾向が顕著とな
る。(Problem to be Solved by the Invention) However, in this case, the negative pressure generated at the intake port may result in an oversupply of fuel gas from the gas nozzle, and the amount of fuel gas from the combustion device increases in proportion to the hot water temperature and other temperatures. In particular, when the amount of combustion is changed, this tendency becomes more pronounced as the amount of combustion is increased.
（問題点を解決するための手段）
本発明はかゝる不都合のない燃焼制御装置を得
ることにその目的とするもので、バーナへのガス
供給路に介在する電磁式比例制御弁と、該バーナ
に空気を供給するフアンとを備え、且つ該フアン
の吸気口に該ガス供給路に連なるガスノズルを臨
ませて成る燃焼器に於いて、該燃焼器に温度調節
回路と、該温度調節回路からの信号により該フア
ンの駆動用モータの回転数制御信号を発生する回
転数制御回路と、該回転数制御回路からの出力信
号により前記電磁式比例制御弁への通電々流の大
きさを設定する比例制御弁と、前記フアンの吸気
口の負圧とガスノズル圧力の絶対値に応じて前記
比例制御回路で設定される電磁式比例制御弁への
通電々流の大きさを補正する補正回路とからなる
制御回路を設けて成る。(Means for Solving the Problems) An object of the present invention is to obtain a combustion control device free of such inconveniences, and includes an electromagnetic proportional control valve interposed in a gas supply path to a burner, In a combustor comprising a fan for supplying air to a burner, and a gas nozzle connected to the gas supply path facing an intake port of the fan, the combustor is provided with a temperature control circuit, and a temperature control circuit connected to the temperature control circuit. a rotation speed control circuit that generates a rotation speed control signal for the drive motor of the fan according to the signal; and an output signal from the rotation speed control circuit to set the magnitude of current flowing to the electromagnetic proportional control valve. a proportional control valve; and a correction circuit that corrects the magnitude of current flowing to the electromagnetic proportional control valve, which is set by the proportional control circuit in accordance with the absolute values of the negative pressure at the intake port of the fan and the gas nozzle pressure. A control circuit is provided.
（実施例）
本発明をガス給湯器に適用した場合の実施例を
図面につき説明すれば、第１図、第２図に於いて
１は下部に通気孔２を備え、上部に排気筒３を備
えるガス給湯器本体を示し、該ガス給湯器本体１
内には、熱交換器４とこれを加熱する予混合式ガ
スバーナ５とを備えた燃焼胴６を有し、該予混合
式バーナ５の混合室７の下部には、燃焼空気供給
用のフアン８を備える。８ａはこの駆動モータ、
９は該予混合式バーナ５への燃料ガス供給路、１
０は該供給路９の先端のガスノズルを示し、該ガ
スノズル１０は前記フアン８の吸気口８ｂに臨ま
せて成り、燃料ガス供給路９には電磁開閉弁１１
とその下流側に電磁式比例制御弁１２とが介在す
る。(Embodiment) An embodiment in which the present invention is applied to a gas water heater will be described with reference to the drawings. In FIGS. 1 shows a gas water heater main body provided with the gas water heater main body 1.
The combustion chamber 6 includes a heat exchanger 4 and a premixing gas burner 5 that heats the heat exchanger 4. A combustion air supplying fan is provided at the bottom of the mixing chamber 7 of the premixing burner 5. 8. 8a is this drive motor,
9 is a fuel gas supply path to the premix burner 5;
0 indicates a gas nozzle at the tip of the supply path 9, the gas nozzle 10 faces the intake port 8b of the fan 8, and the fuel gas supply path 9 has an electromagnetic on-off valve 11.
and an electromagnetic proportional control valve 12 on the downstream side thereof.
１３は前記駆動モータ８ａ並びに両弁１１，１
２を制御する制御回路を示し、該制御回路１３
は、第３図に示すごとく温度調節回路１４と、該
温度調節回路１４からの信号により該フアン８の
駆動用モータ８ａの回転数制御信号を発生する回
転数制御回路１５と、該回転数制御回路１５から
の出力信号により前記電磁式比例制御弁１２への
通電々流の大きさを設定する比例制御回路１６
と、前記フアン８の吸気口８ｂに臨ませた負圧検
知センサ１７とガスノズル１０に臨ませた圧力検
知センサ１８との検知される圧力の絶対値に応じ
て前記比例制御回路１６で設定される電磁式比例
制御弁１２への通電々流の大きさを補正する補正
回路１９とからなる。 13 is the drive motor 8a and both valves 11,1.
2 shows a control circuit for controlling the control circuit 13.
As shown in FIG. 3, there is a temperature control circuit 14, a rotation speed control circuit 15 that generates a rotation speed control signal for the drive motor 8a of the fan 8 based on a signal from the temperature adjustment circuit 14, and a rotation speed control circuit 15 that generates a rotation speed control signal for the drive motor 8a of the fan 8. a proportional control circuit 16 that sets the magnitude of current flow to the electromagnetic proportional control valve 12 based on the output signal from the circuit 15;
is set by the proportional control circuit 16 according to the absolute value of the pressure detected by the negative pressure detection sensor 17 facing the intake port 8b of the fan 8 and the pressure detection sensor 18 facing the gas nozzle 10. It consists of a correction circuit 19 that corrects the magnitude of current flowing to the electromagnetic proportional control valve 12.
第１図に於いて２０は出場管、２１は感温素子
である。 In FIG. 1, 20 is an exit tube, and 21 is a temperature sensing element.
尚上述のものは、負圧検知センサ１７と圧力検
知センサ１８とでそれぞれの圧力を検知し、これ
を信号として補正回路１９を介入させ電磁式比例
制御弁への通電々流の大きさを補正するようにし
たが、フアンモータ８ａの回転数による圧力とこ
れにより発生する負圧の関係をあらかじめプログ
ラミングしておき、回転数の変化を回転数検知器
２２で検知しこれを信号として補正回路に与える
だけで補正することも可能である。 In addition, in the above-described system, the negative pressure detection sensor 17 and the pressure detection sensor 18 detect the respective pressures, and use these as signals to intervene in the correction circuit 19 to correct the magnitude of the current flow to the electromagnetic proportional control valve. However, the relationship between the pressure due to the rotation speed of the fan motor 8a and the negative pressure generated thereby is programmed in advance, and changes in the rotation speed are detected by the rotation speed detector 22 and this is sent as a signal to the correction circuit. It is also possible to correct it by simply giving it.
（作用） 次に本装置の作動を説明する。(effect) Next, the operation of this device will be explained.
熱交換器４に連なる出湯管２０より出湯させる
とき、該出湯管１９内に臨ませた従来一般に知ら
れるごとく感温素子２１によつて検出された出湯
温度と該温度調節回路１４内の設定温度との差に
応じた信号が発生される。この信号を回転数制御
回路１５に入力してこれをその大きさに応じた電
圧に変換し、その電圧を前記フアンモータ８ａに
印加すれば、フアン８は出湯温度に応じた回転数
で回転するごとく制御され、更に該回転数制御回
路１５からフアンモータ６に印加される電圧と同
じ電圧を入力してこれをその大きさに応じた電流
により電磁式開閉弁１１のコイルに通電すれば、
これに応じて該開閉弁１１が開弁されると共に、
電磁式比例制御弁１２のコイルに流れる電流に応
じて該電磁式比例制御弁１２の開度が設定され、
フアン８の風量にガスノズル１０のガス量が一応
は関係づけられる。 When hot water is discharged from the hot water outlet pipe 20 connected to the heat exchanger 4, the hot water temperature detected by a conventionally known temperature sensing element 21 placed in the hot water outlet pipe 19 and the set temperature in the temperature control circuit 14. A signal corresponding to the difference between the two is generated. If this signal is input to the rotational speed control circuit 15 and converted into a voltage corresponding to its magnitude, and this voltage is applied to the fan motor 8a, the fan 8 will rotate at a rotational speed corresponding to the temperature of the tapped water. Furthermore, if the same voltage as the voltage applied to the fan motor 6 is inputted from the rotation speed control circuit 15 and the coil of the electromagnetic on-off valve 11 is energized with a current according to its magnitude,
In response to this, the on-off valve 11 is opened, and
The opening degree of the electromagnetic proportional control valve 12 is set according to the current flowing through the coil of the electromagnetic proportional control valve 12,
The air volume of the fan 8 and the gas volume of the gas nozzle 10 are tentatively related.
しかし前述のようにフアン８の吸気口８ｂに前
記するごとくガスノズル１０を臨ませるときは、
該ガスノズル１０から供給されるガスは吸気口８
ｂの負圧の影響を受ける。 However, when the gas nozzle 10 is placed facing the intake port 8b of the fan 8 as described above,
The gas supplied from the gas nozzle 10 is
Affected by negative pressure b.
例えば、予混合式ガスバーナ５での燃焼を
7500Kcal／hrから30000Kcal／hrまで調節出来る
ものとすると、これに必要とするフアン８からの
空気供給量は0.16乃至0.65m3／minあり、このと
き吸気口８ｂに発生する負圧は第４図にＡで示す
ごとく約５mmH2Oから16mmH2Oまで変化するが、
この場合特に燃焼量が高いところで著しく負圧の
影響を受け、ガスノズル１０からのガス量は第４
図にＢで示すごとく過供給の状態となる。 For example, combustion in premixed gas burner 5
Assuming that it can be adjusted from 7500Kcal/hr to 30000Kcal/hr, the air supply amount required from the fan 8 is 0.16 to 0.65m 3 /min, and the negative pressure generated at the intake port 8b at this time is as shown in Figure 4. As shown in A, it changes from about 5mmH 2 O to 16mmH 2 O,
In this case, especially in areas where the combustion amount is high, the negative pressure is significantly affected, and the amount of gas from the gas nozzle 10 is
As shown by B in the figure, an oversupply state occurs.
そこでフアン８の吸気口８ｂに負圧検知センサ
１７を臨ませると共にガスノズル１０に圧力検知
センサ１８を臨ませて、これらの圧力を検知させ
ると共に、両センサ１７，１８に検知される圧力
の絶対値に応じて前記比例制御回路１６で設定さ
れる電磁式比例制御弁１２への通電々流の大きさ
を補正する補正回路１９によりこれを補正させ
る。 Therefore, a negative pressure detection sensor 17 is provided to face the intake port 8b of the fan 8, and a pressure detection sensor 18 is provided to face the gas nozzle 10 to detect these pressures. This is corrected by a correction circuit 19 that corrects the magnitude of current flowing to the electromagnetic proportional control valve 12, which is set by the proportional control circuit 16 in accordance with the above.
かくすれば、第４図にｃで示すごとく吸気口８
ｂに発生する負圧の影響を排除出来る。 In this way, the intake port 8 as shown by c in FIG.
The influence of negative pressure generated in b can be eliminated.
（効果）
このように本発明によるときは、フアンの吸気
口に負圧検知センサを臨ませると共にガスノズル
に圧力検知センサを臨ませ、両センサに検知され
る圧力の絶対値に応じて比例制御回路で設定され
る電磁式比例制御弁への通電々流の大きさを補正
する補正回路を備えたので、フアンの吸気口にガ
ス供給路に連なるガスノズルを臨ませて、フアン
からの燃焼空気とガスノズルから供給されるガス
との混合を良好にするものにした燃焼制御装置に
於いて生じる不都合即ち、ガスノズルから供給さ
れるガス量の該吸気口に発生する負圧の影響を受
けることを解消出来、これによつて常に安定した
空燃比で燃焼を持続出来るの効果がある。(Effects) According to the present invention, a negative pressure detection sensor is provided at the intake port of the fan, and a pressure detection sensor is provided at the gas nozzle, and the proportional control circuit is operated according to the absolute value of the pressure detected by both sensors. Equipped with a correction circuit that corrects the magnitude of current flow to the electromagnetic proportional control valve set in It is possible to eliminate the inconvenience that occurs in a combustion control device that improves mixing with the gas supplied from the gas nozzle, that is, the amount of gas supplied from the gas nozzle is affected by the negative pressure generated at the intake port, This has the effect of constantly sustaining combustion at a stable air-fuel ratio.
第１図は本発明実施の１例を示す截断側面図、
第２図はその−線截断面図、第３図はその制
御装置のブロツク図、第４図は特性曲線図、第５
図は従来例を示す截断正面図である。
５……ガスバーナ、８……フアン、８ａ……駆
動モータ、８ｂ……吸気口、１０……ガスノズ
ル、１３……制御回路、１４……温度調節回路、
１５……回転数制御回路、１６……比例制御回
路、１７……負圧検知センサ、１８……圧力検知
センサ、１９……補正回路。
FIG. 1 is a cutaway side view showing one example of implementing the present invention;
Fig. 2 is a cross-sectional view taken along the - line, Fig. 3 is a block diagram of the control device, Fig. 4 is a characteristic curve diagram, and Fig. 5 is a diagram of the characteristic curve.
The figure is a cutaway front view showing a conventional example. 5... Gas burner, 8... Fan, 8a... Drive motor, 8b... Intake port, 10... Gas nozzle, 13... Control circuit, 14... Temperature adjustment circuit,
15... Rotation speed control circuit, 16... Proportional control circuit, 17... Negative pressure detection sensor, 18... Pressure detection sensor, 19... Correction circuit.
Claims (1)
制御弁と、該バーナに空気を供給するフアンとを
備え、且つ該フアンの吸気口に該ガス供給路に連
なるガスノズルを臨ませて成る燃焼器に於いて、
該燃焼器に温度調節回路と、該温度調節回路から
の信号により該フアンの駆動用モータの回転数制
御信号を発生する回転数制御回路と、該回転数制
御回路からの出力信号により前記電磁式比例制御
弁への通電々流の大きさを設定する比例制御回路
と、前記フアンの吸気口の負圧とガスノズル圧力
の絶対値に応じて前記比例制御回路で設定される
電磁式比例制御弁への通電電流の大きさを補正す
る補正回路とからなる制御回路を設けて成る燃焼
制御装置。1 A combustor comprising an electromagnetic proportional control valve interposed in a gas supply path to a burner, and a fan that supplies air to the burner, and in which a gas nozzle connected to the gas supply path faces the intake port of the fan. In the
The combustor includes a temperature control circuit, a rotation speed control circuit that generates a rotation speed control signal for the drive motor of the fan according to a signal from the temperature adjustment circuit, and a rotation speed control circuit that generates a rotation speed control signal for the drive motor of the fan according to a signal from the temperature adjustment circuit; A proportional control circuit that sets the magnitude of current flowing to the proportional control valve, and an electromagnetic proportional control valve that is set by the proportional control circuit according to the absolute values of the negative pressure at the intake port of the fan and the gas nozzle pressure. A combustion control device comprising a control circuit including a correction circuit for correcting the magnitude of the energizing current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61060810A JPS62218723A (en) | 1986-03-20 | 1986-03-20 | Combustion control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61060810A JPS62218723A (en) | 1986-03-20 | 1986-03-20 | Combustion control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62218723A JPS62218723A (en) | 1987-09-26 |
| JPH0262780B2 true JPH0262780B2 (en) | 1990-12-26 |
Family
ID=13153074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61060810A Granted JPS62218723A (en) | 1986-03-20 | 1986-03-20 | Combustion control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62218723A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081446A (en) * | 2019-05-05 | 2019-08-02 | 吴起英 | A kind of burning facility for coking industry |
-
1986
- 1986-03-20 JP JP61060810A patent/JPS62218723A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62218723A (en) | 1987-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |