JPH0261414A - Controller for burner - Google Patents
Controller for burnerInfo
- Publication number
- JPH0261414A JPH0261414A JP63212816A JP21281688A JPH0261414A JP H0261414 A JPH0261414 A JP H0261414A JP 63212816 A JP63212816 A JP 63212816A JP 21281688 A JP21281688 A JP 21281688A JP H0261414 A JPH0261414 A JP H0261414A
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- amount
- temperature
- water
- air
- 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 96
- 239000000446 fuel Substances 0.000 claims abstract description 65
- 230000003247 decreasing effect Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 80
- 238000007664 blowing Methods 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 13
- 238000001514 detection method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 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
-
- 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
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
- F23N1/10—Regulating fuel supply conjointly with another medium, e.g. boiler water and with air supply or draught
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/18—Measuring temperature feedwater temperature
-
- 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
- F23N2235/12—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
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)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、給湯器や暖房装置等に用いられる燃焼装置の
制御を行う制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control device that controls a combustion device used in a water heater, a heating device, or the like.
［従来の技術］
燃焼室へ燃焼用の空気を供給する送風機は、質量の大き
い回転体を備えているため、回転速度は急激に変化でき
ない。一方、燃焼室へ燃料を供給する燃料調節器（例え
ば比例弁）は、弁体の質量が小さいため、容易に燃料の
供給量を変化させることができる。このため、送風機と
燃料調節器とを独立して制御したり、燃料調節器と送風
機とを同時に制御するものは、燃焼量が変化する際に、
燃料調節器による燃料の供給量と、送風機の風量とが適
合せず、空燃比異常が発生してしまう。[Prior Art] A blower that supplies combustion air to a combustion chamber includes a rotating body with a large mass, so its rotational speed cannot change rapidly. On the other hand, a fuel regulator (for example, a proportional valve) that supplies fuel to the combustion chamber can easily change the amount of fuel supplied because the mass of the valve body is small. For this reason, when the blower and fuel regulator are controlled independently or the fuel regulator and blower are controlled simultaneously, when the combustion amount changes,
The amount of fuel supplied by the fuel regulator and the air volume of the blower do not match, resulting in an abnormal air-fuel ratio.
そこで、送風機による風量を燃焼量に応じて制御すると
ともに、燃料調節器の開度を送風機の風ｉ（例えば回転
速度）と燃焼状態（空燃比）とに応じて制御し、燃焼量
が変化する際の空燃比異常の発生を防ぐ燃焼装置が考案
されている（特開昭６２−２５２８２６号公報）。Therefore, the amount of air generated by the blower is controlled according to the amount of combustion, and the opening degree of the fuel regulator is controlled according to the air flow i (for example, rotational speed) of the blower and the combustion state (air-fuel ratio), so that the amount of combustion changes. A combustion device has been devised to prevent air-fuel ratio abnormalities from occurring (Japanese Unexamined Patent Publication No. 62-252826).
［発明が解決しようとする課題］
しかしながら、空燃比の制御を燃料・調節器によって行
うと、空燃比補正により燃料の供給量が変化してしまう
。すると、燃焼装置の決定した熱量が燃焼部で得られな
い問題点を備え°Ｃいた。[Problems to be Solved by the Invention] However, if the air-fuel ratio is controlled by a fuel regulator, the amount of fuel supplied changes due to the air-fuel ratio correction. Then, there was a problem that the amount of heat determined by the combustion device could not be obtained in the combustion section.
本発明はの目的は、燃料の供給量を変化させて空燃比の
補正を行っても、目標の熱量を燃焼部で得ることのでき
る燃焼装置の制御装置の提供にある。An object of the present invention is to provide a control device for a combustion device that can obtain a target amount of heat in a combustion section even if the air-fuel ratio is corrected by changing the amount of fuel supplied.
［課題を解決するための手段］
本発明は上記目的を達成するために、第１図に示すよう
に、燃料の燃焼を行う燃焼部１と、該燃焼部１へ燃焼用
の空気を供給する送風機２と、前記燃焼部１へ燃料を供
給する燃料調節器３と、前記送風機２の送風量を制御す
ることにより燃焼量を制御する燃焼量制御手段４を備え
るとともに、前記燃焼部１における空燃比に応じて前記
燃料調節器３における燃料の供給量をフィードバック補
正する空燃比補正手段５を備える制御装置６とを具備す
る燃焼装置において、前記制御装置６の前記燃焼量制御
手段４は、前記空燃比補正手段５によって増減される燃
料の変化量に応じて、燃焼量、つまり送風機２による送
風量を補正することを特徴とする技術的手段とする。[Means for Solving the Problems] In order to achieve the above object, the present invention, as shown in FIG. It includes a blower 2, a fuel regulator 3 that supplies fuel to the combustion section 1, and a combustion amount control means 4 that controls the amount of combustion by controlling the amount of air blown by the blower 2. In the combustion apparatus, the combustion amount control means 4 of the control device 6 includes a control device 6 including an air-fuel ratio correction means 5 that feedback-corrects the amount of fuel supplied in the fuel regulator 3 according to the fuel ratio. This technical means is characterized in that the amount of combustion, that is, the amount of air blown by the blower 2 is corrected in accordance with the amount of change in fuel that is increased or decreased by the air-fuel ratio correction means 5.
［作用および発明の効果］
燃焼部における燃焼状態が、所定の空燃比内で燃焼され
ていないと、制御装置が所定の空燃比で燃焼が行われる
ように燃料調節器による燃料の供給量を変化させる。し
かるに、燃焼量は、空燃比補正によって増減される燃焼
量分があらかじめ補正されている。この結果、空燃比補
正が行われても、目標の熱量を燃焼部で得ることができ
る。[Operation and Effects of the Invention] If the combustion state in the combustion section is that combustion is not being performed within a predetermined air-fuel ratio, the control device changes the amount of fuel supplied by the fuel regulator so that combustion is performed at a predetermined air-fuel ratio. let However, the combustion amount is corrected in advance by the amount of combustion that is increased or decreased by the air-fuel ratio correction. As a result, even if air-fuel ratio correction is performed, the target amount of heat can be obtained in the combustion section.
［発明の効果］
本発明によれば、空燃比補正のために、燃料の供給量が
変化しても、燃料の変化量があらかじめ補正されて燃焼
量が決定される。このため、本発明の制御装置は、従来
に比較して、空燃比補正を行うことにより、燃焼量が変
化して要求される熱量が得られない欠点を無くすことが
できる。[Effects of the Invention] According to the present invention, even if the amount of fuel supplied changes due to air-fuel ratio correction, the amount of change in fuel is corrected in advance and the combustion amount is determined. Therefore, compared to the conventional control device, by correcting the air-fuel ratio, the control device of the present invention can eliminate the disadvantage that the combustion amount changes and the required amount of heat cannot be obtained.
［実施例］
次に、本発明をバイパスミキシング式給湯器に適用した
実施例を図面を用いて説明する。[Example] Next, an example in which the present invention is applied to a bypass mixing water heater will be described with reference to the drawings.
第２図にバイパスミキシング式のガス給湯器の概略図を
示す。Figure 2 shows a schematic diagram of a bypass mixing type gas water heater.
このガス給湯器は、大別して燃料の燃焼を行う燃焼部１
０と、ガス供給配管２０と、水配管３０と、制御装置４
０とから構成されている。This gas water heater is roughly divided into a combustion section 1 that burns fuel.
0, gas supply piping 20, water piping 30, and control device 4
It is composed of 0.
燃焼部１０は、セラミック製の表面燃焼式バーナ１１を
内部に配設した燃焼ケース１２と、この燃焼ケース１２
内に燃焼用の空気を供給する送風機１３とからなり、送
風機１３によって燃焼ケース１２内に導かれた燃焼用の
空気は、燃焼後、燃焼ガスとして図示しない排気口より
排出される。The combustion section 10 includes a combustion case 12 in which a ceramic surface combustion type burner 11 is disposed, and this combustion case 12.
The combustion air is guided into the combustion case 12 by the blower 13, and after being combusted, it is discharged as combustion gas from an exhaust port (not shown).
ガス供給配管２０は、送風機１３の遠心式ファン１４の
内周に開口するノズル２１へ、燃料のガスを供給するも
ので、上流側より元電磁弁２２、主電磁弁２３、比例弁
２４が順次設けられている。比例弁２４の下流は２つに
分岐され、一方には切替用電磁弁２５、他方にはオリフ
ィス２６が設けられている。なお、元電磁弁２２、主電
磁弁２３および切替用電磁弁２５は、通電制御によって
ガス供給配管２０を開閉するもので、比例弁２４は通電
量に応じて開口比が変１ヒし、ノズル２１に供給される
ガス景を調節するものである。なお、比例弁２４および
切替用電磁弁２５は、本発明の燃料調節器である。The gas supply pipe 20 is for supplying fuel gas to a nozzle 21 that opens on the inner circumference of the centrifugal fan 14 of the blower 13, and the main solenoid valve 22, the main solenoid valve 23, and the proportional valve 24 are sequentially supplied from the upstream side. It is provided. The downstream side of the proportional valve 24 is branched into two parts, one of which is provided with a switching solenoid valve 25 and the other with an orifice 26. The main solenoid valve 22, the main solenoid valve 23, and the switching solenoid valve 25 open and close the gas supply pipe 20 by energization control, and the proportional valve 24 changes its opening ratio according to the amount of energization, and the nozzle This is to adjust the gas flow supplied to 21. Note that the proportional valve 24 and the switching solenoid valve 25 are the fuel regulator of the present invention.
水配管３０は、一方が水の供給源に接続され、他方が給
湯口に接続されるもので、バーナ１１のガスの燃焼によ
って発生する熱と内部を流れる水とを熱交換し、内部を
通過する水を加熱する熱交換器３１と、この熱交換器３
１をバイパスするバイパス水路３２とを備える。The water pipe 30 has one end connected to a water supply source and the other end connected to a hot water supply port, and exchanges heat between the heat generated by combustion of gas in the burner 11 and the water flowing inside. A heat exchanger 31 that heats the water to be heated, and this heat exchanger 3
1.
熱交換器３１とバイパス水路３２どの分岐路の上流の水
配管３０には、熱交換器３１とバイパス水路３２とに流
入する水圧が変化しても、流入する水量を一定に保つガ
バナ弁の機能と、水量を調節する水量調節弁の機能とが
組み合わされた電動水量制御装置３３が設けられている
。また、バイパス水路３２には、バイパス水路３２を通
過する水量を調節するとともに、バイパス水路３２を開
閉可能な絞り弁３４が設けられている。The water pipe 30 upstream of which branch of the heat exchanger 31 and the bypass waterway 32 has a governor valve function that keeps the amount of water flowing into the heat exchanger 31 and the bypass waterway 32 constant even if the water pressure flowing into the heat exchanger 31 and the bypass waterway 32 changes. An electric water flow control device 33 is provided which combines the functions of a water flow control valve and a water flow control valve that adjusts the water flow. Further, the bypass waterway 32 is provided with a throttle valve 34 that can adjust the amount of water passing through the bypass waterway 32 and open and close the bypass waterway 32 .
なお、電動水量制御装置３３の絞り比は、熱交換器３１
およびバイパス水路３２へ流入する水の総量を規制する
ため、絞り弁３４と同じか、絞り弁３４より小さく設け
られている。また、電動水量制御装置３３と絞り弁３４
は、水量を調節する手段として、水路を開閉可能な弁体
をギアドモータを用いて駆動している。Note that the throttle ratio of the electric water flow control device 33 is the same as that of the heat exchanger 31.
In order to regulate the total amount of water flowing into the bypass waterway 32, it is provided to be the same as the throttle valve 34 or smaller than the throttle valve 34. In addition, an electric water flow control device 33 and a throttle valve 34
uses a geared motor to drive a valve body that can open and close the waterway as a means to adjust the amount of water.
制御装置４０は、第３図に示すように、マイクロコンピ
ュータ４１、リレー回路４２および駆動回路４３から構
成されるもので、使用者によって操作されるコントロー
ラ４４や各種センサの出力に応じて、バーナ１１に着火
を行うスパーカ４５、元電磁弁２２、主電磁弁２３、比
例弁２４、切替用電磁弁２５、電動水量制御装′ｌ１３
３、絞り弁３４を通電制御するものである。As shown in FIG. 3, the control device 40 is composed of a microcomputer 41, a relay circuit 42, and a drive circuit 43, and controls the burner 11 according to the outputs of a controller 44 and various sensors operated by the user. Sparker 45 for igniting, main solenoid valve 22, main solenoid valve 23, proportional valve 24, switching solenoid valve 25, electric water flow control device 113
3. Controls energization of the throttle valve 34.
制御装置４０の各種センサは、バーナ１１の炎の検出お
よび空燃比を検出するためのフレームロッド４６および
サーモカップル４７、電動水量制御装置３３および絞り
弁３４の弁体に連動し、開度を検出するポテンショメー
タ４８．４９、送風機１３の風量を回転速度によって検
出する風量検出センサ５０、熱交換３３１およびバイパ
ス水路３２に流入する水の温度を検出する入水温センサ
５１、熱交換器３１を通過した湯温を検出する湯温セン
サ５２、熱交換器３１およびバイパス水路３２を通過し
、混合された湯温を検出する出湯温センサ５３、熱交換
器３１およびバイパス水路３２に流入する水量を検出す
る水量検出センサ５４を備える。Various sensors of the control device 40 are linked to a flame rod 46 and a thermocouple 47 for detecting the flame of the burner 11 and the air-fuel ratio, an electric water flow control device 33, and a valve body of the throttle valve 34 to detect the opening degree. an air flow detection sensor 50 that detects the air flow of the blower 13 based on its rotational speed, an inlet water temperature sensor 51 that detects the temperature of water flowing into the heat exchanger 331 and the bypass waterway 32, A hot water temperature sensor 52 that detects the temperature, an outlet hot water temperature sensor 53 that detects the temperature of mixed hot water that has passed through the heat exchanger 31 and the bypass waterway 32, and an amount of water that detects the amount of water that flows into the heat exchanger 31 and the bypass waterway 32. A detection sensor 54 is provided.
なお、風量検出センナ５０は、送風機１３のモータに連
動する回転体を備え、この回転体の回転に応じたパルス
信号を発生する。また、水量検出センサ５４は、水の流
れによって回転する回転体を備え、この回転体の回転に
応じたパルス信号を発生する。Note that the air volume detection sensor 50 includes a rotating body that is interlocked with the motor of the blower 13, and generates a pulse signal according to the rotation of the rotating body. Further, the water amount detection sensor 54 includes a rotating body that rotates with the flow of water, and generates a pulse signal according to the rotation of the rotating body.
そして、コンピュータ４１は、風量検出センサ５０およ
び水量検出センサ５４の発生するパルス信号の間隔より
、送風＠１３の回転速度や、回転体の回転速度を検出し
、風量や水量を検出する。Then, the computer 41 detects the rotational speed of the air blower @ 13 and the rotational speed of the rotating body from the interval between pulse signals generated by the airflow rate detection sensor 50 and the water rate detection sensor 54, and detects the airflow rate and the water rate.
次に、コンピュータ４１による燃焼制御、および水量制
御について簡単に説明する。Next, combustion control and water amount control by the computer 41 will be briefly explained.
使用者が給湯口に接続されたカランを操作し、水配管３
０に水流が生じると、水産検出センサ５４内の回転体が
回転し、燃焼が開始される。燃焼開始後の燃焼量は、コ
ントローラ４４によって設定された設定温度が得られる
ように、各種センサによって得られた水量、入水温度、
熱交換器３１を通過した湯温、ミキシング湯温（出湯温
度）等より決定され、送風機１３は決定された燃焼量に
応じた風量をバーナ１１に供給するように電圧が制御さ
れる。The user operates the switch connected to the hot water supply inlet, and the water pipe 3
When a water flow is generated at 0, the rotating body within the fishery detection sensor 54 rotates, and combustion is started. The amount of combustion after the start of combustion is determined based on the amount of water obtained by various sensors, the temperature of inlet water,
The temperature is determined based on the temperature of the hot water passing through the heat exchanger 31, the temperature of mixing hot water (temperature of hot water discharged), etc., and the voltage of the blower 13 is controlled so as to supply the burner 11 with an air volume corresponding to the determined combustion amount.
つまり、燃焼量イコール送風機１３の送風量とされる。In other words, the amount of combustion equals the amount of air blown by the blower 13.
そして、送風機１３の回転速度やバーナ１１の炎の温度
に応じたガス量が得られるように、比例弁２４および切
替用電磁弁２５が通電制御される。なお、燃焼量は、熱
交換器３１を通過した湯温が、燃焼によって発生した水
（ドレン水）が熱交換器３１に付着しない温度（例えば
６０℃）以上に維持されるように設定される。Then, the proportional valve 24 and the switching solenoid valve 25 are controlled to be energized so that a gas amount corresponding to the rotational speed of the blower 13 and the temperature of the flame of the burner 11 is obtained. The amount of combustion is set such that the temperature of the water passing through the heat exchanger 31 is maintained at a temperature above (for example, 60° C.) at which water generated by combustion (drain water) does not adhere to the heat exchanger 31. .
絞り弁３４は、入水温度、設定温度、熱交換３３１を通
過した湯温、出湯温度より算出された適切な開度で固定
される。なおこの固定は、バイパス水路３２を流れる流
量が、熱交換器３１を流れる水量の２倍となるように設
定されている。つまり、バイパス水路３２と熱交換器３
１との流通抵抗め比は、絞り弁３４により約２：１とさ
れる。また、絞り弁３４の開度の固定は、入水量が少な
い場合や、出湯温度を低下させる場合に解除され、入水
量、出湯温度に応じて算出された開度となるように絞り
弁３４が通電制御される。The throttle valve 34 is fixed at an appropriate opening calculated from the inlet water temperature, the set temperature, the temperature of the hot water that has passed through the heat exchanger 331, and the outlet temperature. Note that this fixation is set so that the flow rate flowing through the bypass waterway 32 is twice the amount of water flowing through the heat exchanger 31. In other words, the bypass waterway 32 and the heat exchanger 3
1 and the flow resistance ratio is set to about 2:1 by the throttle valve 34. Further, the opening degree of the throttle valve 34 is fixed when the amount of water entering is small or when the temperature of hot water coming out is lowered, and the opening degree of the throttle valve 34 is fixed so that the opening degree is calculated according to the amount of water entering and the temperature of hot water coming out. Energization is controlled.
また、電動水量制御装置３３は、出湯温度が得られるの
に必要な最大流量を越えないように通電制御される。Further, the electric water flow rate control device 33 is controlled to be energized so as not to exceed the maximum flow rate required to obtain the hot water temperature.
次に、コンピュータ４１内にプログラムされた燃焼量制
御手段による燃焼量の制御について詳述する。Next, the control of the combustion amount by the combustion amount control means programmed in the computer 41 will be described in detail.
燃焼ｊｌＱは、フィードフォワード燃焼量Ｆ［と、熱交
容量補正燃焼量にと、空燃比修正燃焼量］゛と、比例修
正燃焼量Ｐと、積分修正燃焼量Ｉとを加算したもので、
Ｑ＝ＦＦ＋に＋Ｔ＋Ｐ＋１の式で表される。Combustion jlQ is the sum of feedforward combustion amount F [, heat exchange capacity corrected combustion amount, air-fuel ratio corrected combustion amount], proportionally corrected combustion amount P, and integral corrected combustion amount I, and Q =FF+ +T+P+1.
フィードフォワード燃焼量Ｅ「は、コントローラ４４で
設定された設定温度１Ｓと入水温センサ５１によって検
出された入水温度Ｔｉとの差と、水量検出センサ５４に
よって検出された水ｊｌＷと、熱交換器３１の熱交換効
率１／ｅｆｆとによって算出される。The feedforward combustion amount E" is the difference between the set temperature 1S set by the controller 44 and the inlet water temperature Ti detected by the inlet water temperature sensor 51, the water jlW detected by the water amount detection sensor 54, and the heat exchanger 31. It is calculated by the heat exchange efficiency 1/eff.
これは、ＦＦ＝ （Ｔｓ −Ｔｉ） Ｗ／ｅＨの式で表
される。This is expressed by the formula FF=(Ts-Ti)W/eH.
熱交容量補正燃焼、ＩＫは、コントローラ４４で設定さ
れた設定温度Ｔｓと出湯温センサ５３によって検出され
た出湯温度Ｔａとの差と、使用される熱交換器３１に応
じて予め設定された熱容量Ｍと、熱交換器３１とバイパ
ス水路３２とのバイパス比に応じた定数ａとから算出さ
れる。The heat exchange capacity correction combustion, IK, is the difference between the set temperature Ts set by the controller 44 and the outlet temperature Ta detected by the outlet temperature sensor 53, and the heat capacity preset according to the heat exchanger 31 used. It is calculated from M and a constant a depending on the bypass ratio between the heat exchanger 31 and the bypass waterway 32.
これは、Ｋ ＝ａ （ＴＳ−Ｔｌｌ） Ｍの式で表され
る。This is expressed by the formula K = a (TS-Tll) M.
なおこの熱交容量補正燃焼量にの算出は、コントローラ
４４で設定された設定温度Ｔｓが得られるに必要な熱交
換器３１の仮想温度■０を算出し、この仮想温度Ｔｅと
湯温センサ５２によって検出した湯温■０との差と、熱
容量Ｍとから算出しても同じことである。なおこれは、
Ｋ＝ （Ｔｅ −Ｔｏ） Ｍの式で表される。Note that this heat exchange capacity correction combustion amount is calculated by calculating the fictive temperature 0 of the heat exchanger 31 necessary to obtain the set temperature Ts set by the controller 44, and then calculating the fictive temperature The same result can be obtained by calculating from the heat capacity M and the difference between the hot water temperature 0 and the temperature detected by . Furthermore, this is
It is expressed by the formula K=(Te −To)M.
本発明に係る空燃比修正燃焼量Ｔは、空燃比補正により
増減されるガス量を補正するもので、空燃比補正による
補正燃焼ｆｆ１Ｎの符号を反転さぜなものである。なお
、本発明にがかる空燃比補正手段は、燃焼量制御手段と
ともにコンピュータ４１内にプログラムされている。The air-fuel ratio corrected combustion amount T according to the present invention corrects the gas amount increased or decreased by the air-fuel ratio correction, and is obtained by reversing the sign of the corrected combustion ff1N due to the air-fuel ratio correction. Note that the air-fuel ratio correction means according to the present invention is programmed in the computer 41 together with the combustion amount control means.
これは、Ｔ ＝ −Ｎの式で表される。This is expressed by the formula T=-N.
比例修正燃焼ｊｌＰの算出は、コントローラ４４で設定
された設定温度Ｔｓと湯温センサ５２によって検出した
湯温１０との差と、水量検出センサ５４によって検出さ
れた水ｉ、ｗと、比例定数Ｅとから算出される。The proportional correction combustion jlP is calculated based on the difference between the set temperature Ts set by the controller 44 and the hot water temperature 10 detected by the hot water temperature sensor 52, the water i and w detected by the water amount detection sensor 54, and the proportionality constant E. It is calculated from
これは、Ｐ＝Ｅ （Ｉｓ−Ｔｏ） Ｗの式で表される。This is expressed by the formula P=E (Is-To)W.
なお、（Ｔｓ−Ｔｏ） Ｗは両差値を示す。また本実施
例では、Ｅ＝０．８前後が適切である。In addition, (Ts-To)W shows both difference values. Further, in this embodiment, E=approximately 0.8 is appropriate.
積分修正燃焼量Ｉの算出は、コントローラ４４で設定さ
れた設定温度Ｔｓと湯温センサ５２によって検出した湯
温■０との差を積分したものである。The integral corrected combustion amount I is calculated by integrating the difference between the set temperature Ts set by the controller 44 and the hot water temperature ■0 detected by the hot water temperature sensor 52.
これは、１．＝Ｉ。〜’、 ＋ｂＷ、 （Ｔｓ−Ｔｏ
）の式で表される。なお、ｂｘｗ、は積分定数を示し、
■、は今回の算出する積分修正燃焼量で、Ｉ、、は前回
の算出した積分修正燃焼量である。積分修正燃焼量■の
変化量を流ｔＷ、に比例さぜることで、フィードバック
に要する時間遅れを修正し、積分修正燃焼量Ｉを均一評
価することができる。This is 1. =I. ~', +bW, (Ts−To
) is expressed by the formula. Note that bxw represents an integral constant,
(2) is the currently calculated integrally corrected combustion amount, and I, is the previously calculated integrally corrected combustion amount. By changing the amount of change in the integral corrected combustion amount ■ in proportion to the flow tW, the time delay required for feedback can be corrected and the integral corrected combustion amount I can be uniformly evaluated.
また、積分修正燃焼量ＩをＦ［値の変化比の積とし、−
度収束した積分値を合理的に評価した上で変化に対応さ
せても良い。Also, let the integral corrected combustion amount I be the product of the change ratio of F[value, -
It is also possible to respond to changes after rationally evaluating the converged integral value.
本実施例によれば、フィードフォワード燃焼量Ｆ「に、
空燃比修正燃焼量Ｔを加算することにより、空燃比補正
により増減されるガスがあらかじめ燃焼量に補正される
。このため、空燃比補正によりガスの供給量が変化して
も、目標の熱量を燃焼部１０で得ることができる。この
結果、空燃比制御による燃焼量が変化する影響を無くし
て、使用者の設定した出湯温度を使用者に供給すること
ができる。According to this embodiment, the feedforward combustion amount F is
By adding the air-fuel ratio corrected combustion amount T, the gas that is increased or decreased by the air-fuel ratio correction is corrected to the combustion amount in advance. Therefore, even if the gas supply amount changes due to air-fuel ratio correction, the target amount of heat can be obtained in the combustion section 10. As a result, the hot water temperature set by the user can be supplied to the user without the influence of the combustion amount changing due to air-fuel ratio control.
また、燃焼量Ｑ＝ＦＦ＋ＫＦＴ＋Ｐ＋Ｉとすることによ
り、使用者の設定した出湯温度を常に安定して供給する
ことができる。Further, by setting the combustion amount Q=FF+KFT+P+I, the hot water temperature set by the user can always be stably supplied.
（変形例）
燃焼量に応じた電圧を送風機に印加するため、上記燃焼
量の算出を直接、電圧の算出としても良い。つまり、送
風機に印加される電圧は、フィードフォワード電圧と、
熱交容量補正電圧と、空燃比修正電圧と、比例修正電圧
と、積分修正電圧とを加算して求めるものである。(Modification) In order to apply a voltage to the blower according to the amount of combustion, the calculation of the amount of combustion described above may be directly calculated by calculating the voltage. In other words, the voltage applied to the blower is the feedforward voltage,
It is obtained by adding the heat exchange capacity correction voltage, the air-fuel ratio correction voltage, the proportional correction voltage, and the integral correction voltage.
また、バイパス水路を備えた給湯器を例に示したが、バ
イパス水路を有しない給湯器はむろん、燃焼式の暖房装
置等に本発明を適用しても良い。Further, although a water heater with a bypass waterway is shown as an example, the present invention may be applied to a combustion type heating device or the like as well as a water heater without a bypass waterway.
さらに、燃料にガスを用いた例を示したが、灯油や重油
など液体燃料を用いた燃焼装置に適用しても良い。Further, although an example using gas as fuel has been shown, the present invention may also be applied to a combustion device using liquid fuel such as kerosene or heavy oil.
第１図は本発明の構成を示すブロック図、第２図はバイ
パスミキシング式のガス給湯器の概略構成図、第３図は
制御装置の概略ブロック図である。
図中 １・・・燃焼部 ２・・・送風機 ３・・・燃料
調節器 ４・・・燃焼量制御手段 ５・・・空燃比補正
手段６・・・制御装置FIG. 1 is a block diagram showing the configuration of the present invention, FIG. 2 is a schematic configuration diagram of a bypass mixing type gas water heater, and FIG. 3 is a schematic block diagram of a control device. In the figure 1...Combustion part 2...Blower 3...Fuel regulator 4...Combustion amount control means 5...Air-fuel ratio correction means 6...Control device
Claims (1)
部へ燃料を供給する燃料調節器と、前記送風機の送風量
を制御することにより燃焼量を制御する燃焼量制御手段
を備えるとともに、前記燃焼部における空燃比に応じて
前記燃料調節器における燃料の供給量をフィードバック
補正する空燃比補正手段を備える制御装置と を具備する燃焼装置において、 前記制御装置の前記燃焼量制御手段は、 前記空燃比補正手段によって増減される燃料の変化量に
応じて、燃焼量を補正することを特徴とする燃焼装置の
制御装置。[Scope of Claims] 1) A combustion section that burns fuel, a blower that supplies air for combustion to the combustion section, a fuel regulator that supplies fuel to the combustion section, and an air flow rate of the blower. and a control device comprising a combustion amount control means for controlling the combustion amount by controlling the combustion amount, and an air-fuel ratio correction means for feedback-correcting the fuel supply amount in the fuel regulator according to the air-fuel ratio in the combustion section. A control device for a combustion device, wherein the combustion amount control means of the control device corrects the combustion amount according to an amount of change in fuel increased or decreased by the air-fuel ratio correction means.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63212816A JPH0261414A (en) | 1988-08-26 | 1988-08-26 | Controller for burner |
| KR1019890011910A KR930004524B1 (en) | 1988-08-26 | 1989-08-21 | Controller for combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63212816A JPH0261414A (en) | 1988-08-26 | 1988-08-26 | Controller for burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0261414A true JPH0261414A (en) | 1990-03-01 |
| JPH0467091B2 JPH0467091B2 (en) | 1992-10-27 |
Family
ID=16628834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63212816A Granted JPH0261414A (en) | 1988-08-26 | 1988-08-26 | Controller for burner |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0261414A (en) |
| KR (1) | KR930004524B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006095960A1 (en) * | 2005-01-28 | 2006-09-14 | Kyungdong Network Co., Ltd. | System and control method of oil burner's suitable burning ratio using air pressure sensor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5185791B2 (en) * | 2008-11-28 | 2013-04-17 | 三菱重工業株式会社 | Gas turbine control device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62252826A (en) * | 1986-04-23 | 1987-11-04 | Rinnai Corp | Burner |
-
1988
- 1988-08-26 JP JP63212816A patent/JPH0261414A/en active Granted
-
1989
- 1989-08-21 KR KR1019890011910A patent/KR930004524B1/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62252826A (en) * | 1986-04-23 | 1987-11-04 | Rinnai Corp | Burner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006095960A1 (en) * | 2005-01-28 | 2006-09-14 | Kyungdong Network Co., Ltd. | System and control method of oil burner's suitable burning ratio using air pressure sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| KR900003589A (en) | 1990-03-26 |
| JPH0467091B2 (en) | 1992-10-27 |
| KR930004524B1 (en) | 1993-05-27 |
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