JPH081329B2 - Water heater controller - Google Patents
Water heater controllerInfo
- Publication number
- JPH081329B2 JPH081329B2 JP63220720A JP22072088A JPH081329B2 JP H081329 B2 JPH081329 B2 JP H081329B2 JP 63220720 A JP63220720 A JP 63220720A JP 22072088 A JP22072088 A JP 22072088A JP H081329 B2 JPH081329 B2 JP H081329B2
- Authority
- JP
- Japan
- Prior art keywords
- amount
- combustion
- combustion amount
- air
- correction
- 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 - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (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、給湯器の燃焼量の制御を行う制御装置に関
する。TECHNICAL FIELD The present invention relates to a control device that controls the combustion amount of a water heater.
［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] Since a blower that supplies combustion air to a combustion chamber includes a rotor having a large mass, the rotation 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 fuel supply amount because the mass of the valve element is small. For this reason, when controlling the blower and the fuel controller independently, or controlling the fuel controller and the blower at the same time, when the combustion amount changes, the fuel supply amount by the fuel controller and the blower The air volume does not match and an air-fuel ratio abnormality occurs.
そこで、送風機の風量を燃焼量に応じて制御し、燃料
調節器の開度を送風機の風量と燃焼状態（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
を防ぐ給湯器が考案されている（特開昭62−252826
号）。Therefore, the air volume of the blower is controlled according to the combustion amount, the opening of the fuel controller is controlled according to the air volume of the blower and the combustion state (air-fuel ratio), and the air-fuel ratio abnormality occurs when the combustion amount changes. A water heater that prevents this has been devised (Japanese Patent Laid-Open No. 62-252826).
issue).
そして、従来の燃焼量は、使用者によって設定された
設定温度の湯が得られるように、設定温度、入水温度、
水量、熱効率に基づきフィードフォワード制御により算
出されるものであった。And, the conventional combustion amount, the set temperature, the water inlet temperature, so that the hot water of the set temperature set by the user is obtained.
It was calculated by feedforward control based on the amount of water and thermal efficiency.
［発明が解決しようとする課題］ しかしながら、設定温度が変更された場合や、入水温
度、水量が変化した場合など、フィードフォワード制御
により燃焼量が変更されると、燃焼により得られた熱と
通過する水とを熱交換する熱交換器の熱容量による残存
熱量の影響により、熱交換器が熱平衡に至るまで、使用
者の設定した出湯温度が得られない。[Problems to be Solved by the Invention] However, when the combustion amount is changed by the feedforward control, such as when the set temperature is changed or when the incoming water temperature and the water amount are changed, the heat obtained by the combustion and the passage Due to the effect of the residual heat amount due to the heat capacity of the heat exchanger that exchanges heat with the generated water, the tap water temperature set by the user cannot be obtained until the heat exchanger reaches thermal equilibrium.
また、空燃比の制御を燃料の供給量で行うため、空燃
比補正により供給される燃料の量が変化すると、得られ
る熱量が変化する。このため、空燃比補正により使用者
により設定された出湯温度が得られない場合があった。Further, since the air-fuel ratio is controlled by the fuel supply amount, when the amount of fuel supplied by the air-fuel ratio correction changes, the obtained heat amount changes. Therefore, the hot water outlet temperature set by the user may not be obtained due to the air-fuel ratio correction.
つまり、従来のフィードフォワード制御のみで燃焼量
を決定するものは、各誤差により、使用者の設定した出
湯温度が得られない問題点を備えていた。That is, the conventional method that determines the combustion amount only by the feedforward control has a problem that the tapping temperature set by the user cannot be obtained due to each error.
本発明は、上記不具合を無くすべくなされたもので、
その目的は、常に設定温度に応じた温度の湯を供給する
ことのできる給湯器の制御装置の提供にある。The present invention has been made to eliminate the above problems,
The purpose is to provide a controller for a water heater that can always supply hot water at a temperature according to a set temperature.
［課題を解決するための手段］ 本発明の給湯器の制御装置は、次の技術的手段を採用
する。[Means for Solving the Problems] The control device for a water heater of the present invention employs the following technical means.
給湯器は、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へ燃料の供給量を調節する比例弁３と、 燃料の燃焼により得られた熱と水とを熱交換し、水を
加熱する熱交換器４と、 前記燃焼部１における燃焼状態の空燃比を検出する空
燃比センサ５と、 前記送風機２を目標燃焼量に基づいて制御するととも
に、前記比例弁３の開度を前記送風機２の送風量に基づ
いて制御するファン先行型の制御装置６とを備える。As shown in FIG. 1, the water heater has a combustor 1 for combusting fuel, a blower 2 for supplying combustion air to the combustor 1, and a fuel supply amount for the combustor 1. A proportional valve 3, a heat exchanger 4 that heats water by exchanging heat with water obtained by combustion of fuel, and an air-fuel ratio sensor 5 that detects an air-fuel ratio of a combustion state in the combustion section 1. A fan precedent type control device 6 is provided for controlling the blower 2 based on the target combustion amount and controlling the opening degree of the proportional valve 3 based on the blown amount of the blower 2.
この制御装置６は、 前記燃焼部１における目標の燃焼量を決定する目標燃
焼量決定手段Ａ、 この目標燃焼量決定手段Ａで決定された目標の燃焼量
に基づいて前記送風機２の送風量を制御する送風機制御
手段７、 前記送風機２の実際の送風量に基づいて前記比例弁３
の開度を制御する比例弁制御手段８、 前記空燃比センサ５の検出する空燃比に応じて前記比
例弁３の開度を補正する空燃比補正手段９を備える。The control device 6 determines a target combustion amount determination means A for determining a target combustion amount in the combustion section 1, and determines the amount of air blown by the blower 2 based on the target combustion amount determined by the target combustion amount determination means A. Blower control means 7 for controlling, the proportional valve 3 based on the actual blown amount of the blower 2
The proportional valve control means 8 for controlling the opening of the proportional valve 3 and the air-fuel ratio correcting means 9 for correcting the opening of the proportional valve 3 according to the air-fuel ratio detected by the air-fuel ratio sensor 5.
そして、前記目標燃焼量決定手段Ａは、 設定温度、入水温度、水量などより、出湯温度を設定
温度とするのに必要とされるフィードフォワード燃焼量
を算出するフィードフォワード燃焼量算出手段A1と、 設定温度が得られるのに必要な前記熱交換器４の目標
熱容量から現在の前記熱交換器４の現在熱容量を差し引
いた熱容量差に相当する熱交容量補正燃焼量を算出する
熱交容量補正燃焼量算出手段A2と、 前記空燃比補正手段９によって増減される燃焼量の変
化を打ち消す空燃比補正燃焼量を算出する空燃比補正燃
焼量算出手段A3と、 設定温度と出湯温度との偏差量を比例制御により補正
する比例補正燃焼量を算出する比例補正燃焼量算出手段
A4と、 設定温度と出湯温度との偏差量を積分制御により補正
する積分補正燃焼量を算出する積分補正燃焼量算出手段
A5を備え、 前記フィードフォワード燃焼量、前記熱交容量補正燃
焼量、前記空燃比補正燃焼量、前記比例補正燃焼量、前
記積分補正燃焼量を加算して、前記目標の燃焼量を決定
する。Then, the target combustion amount determining means A is a feedforward combustion amount calculating means A1 for calculating the feedforward combustion amount required to set the outlet hot water temperature to the set temperature based on the set temperature, the incoming water temperature, the water amount, and the like. Heat exchange capacity correction combustion for calculating a heat exchange capacity correction combustion amount corresponding to a heat capacity difference obtained by subtracting the current heat capacity of the heat exchanger 4 from the target heat capacity of the heat exchanger 4 required to obtain the set temperature An amount calculation means A2, an air-fuel ratio correction combustion amount calculation means A3 for calculating an air-fuel ratio correction combustion amount for canceling a change in the combustion amount increased or decreased by the air-fuel ratio correction means 9, and a deviation amount between the set temperature and the hot water temperature. Proportional correction combustion amount calculating means for calculating a proportional correction combustion amount corrected by proportional control
A4 and integral correction combustion amount calculation means for calculating integral correction combustion amount for correcting deviation amount between set temperature and hot water temperature by integral control
A5 is provided, and the target combustion amount is determined by adding the feedforward combustion amount, the heat exchange capacity correction combustion amount, the air-fuel ratio correction combustion amount, the proportional correction combustion amount, and the integral correction combustion amount.
［作用］ 上記構成よりなる本発明は、フィードフォワード燃焼
量に、比例補正燃焼量と、積分補正燃焼量とを加算す
る。この結果、得られる燃焼量は、フィードフォワード
燃焼量と実際の燃焼との誤差が補正されたものとなる。[Operation] According to the present invention having the above configuration, the proportional correction combustion amount and the integral correction combustion amount are added to the feedforward combustion amount. As a result, the obtained combustion amount is the one in which the error between the feedforward combustion amount and the actual combustion is corrected.
上記フィードフォワード燃焼量と比例補正燃焼量と積
分補正燃焼量とを加算した燃焼量に、熱交容量補正燃焼
量を加算することにより、熱交換器の熱容量による残存
熱量分が補正される。この結果、熱交換器が熱平衡に至
る途中においても、使用者の設定した出湯温度を得るこ
とができる。By adding the heat exchange capacity correction combustion quantity to the combustion quantity obtained by adding the feedforward combustion quantity, the proportional correction combustion quantity, and the integral correction combustion quantity, the residual heat quantity due to the heat capacity of the heat exchanger is corrected. As a result, the tapping temperature set by the user can be obtained even while the heat exchanger reaches thermal equilibrium.
また、フィードフォワード燃焼量と比例補正燃焼量と
積分補正燃焼量と熱交容量補正燃焼量とを加算した燃焼
量に空燃比補正燃焼量を加算することにより、空燃比補
正により増減される燃料があらかじめ燃焼量に補正され
る。この結果、空燃比補正により燃料の供給量が変化し
ても使用者の設定した出湯温度を得ることができる。Also, by adding the air-fuel ratio corrected combustion amount to the combustion amount obtained by adding the feed-forward combustion amount, the proportional correction combustion amount, the integral correction combustion amount, and the heat exchange capacity correction combustion amount, the fuel that is increased or decreased by the air-fuel ratio correction is The amount of combustion is corrected in advance. As a result, the hot water temperature set by the user can be obtained even if the fuel supply amount changes due to the air-fuel ratio correction.
［発明の効果］ 本発明によれば、フィードフォワード燃焼量と、熱交
容量補正燃焼量と、空燃比補正燃焼量と、比例補正燃焼
量と、積分補正燃焼量とを加算して燃焼量を決定するた
め、使用者の設定した温度の湯を安定して供給すること
ができる。EFFECT OF THE INVENTION According to the present invention, the combustion amount is calculated by adding the feedforward combustion amount, the heat exchange capacity correction combustion amount, the air-fuel ratio correction combustion amount, the proportional correction combustion amount, and the integral correction combustion amount. Since it is determined, the hot water having the temperature set by the user can be stably supplied.
［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。[Embodiment] Next, an embodiment in which the present invention is applied to a bypass mixing type 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。FIG. 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
10と、ガス供給配管20と、水配管30と、制御装置40とか
ら構成されている。This gas water heater is roughly divided into a combustion section that burns fuel.
10, a gas supply pipe 20, a water pipe 30, and a control device 40.
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 unit 10 includes a combustion case 12 in which a surface combustion type burner 11 made of ceramic is disposed, and a blower 13 that supplies air for combustion into the combustion case 12. After combustion, the combustion air guided to the exhaust port is discharged from a not-shown exhaust port as combustion gas.
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化し、ノ
ズル21に供給されるガス量を調節するものである。The gas supply pipe 20 supplies fuel gas to a nozzle 21 that is opened on the inner periphery of the centrifugal fan 14 of the blower 13,
A source solenoid valve 22, a main solenoid valve 23, and a proportional valve 24 are sequentially provided from the upstream side. The downstream side of the proportional valve 24 is branched into two, one of which is provided with a switching solenoid valve 25 and the other with an orifice 26. The original solenoid valve 22, the main solenoid valve 23, and the switching solenoid valve 25 are for opening and closing the gas supply pipe 20 by energization control, and the proportional valve 24 changes the opening ratio according to the energization amount, and the proportional valve 24 is connected to the nozzle 21. The amount of gas supplied is adjusted.
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31をバ
イパスするバイパス水路32とを備える。One of the water pipes 30 is connected to a water supply source and the other is connected to a hot water supply port, and exchanges heat generated by combustion of the gas in the burner 11 with water flowing inside and passes through the inside. The heat exchanger 31 for heating the water to be heated and the bypass water passage 32 bypassing the heat exchanger 31 are provided.
熱交換器31とバイパス水路32と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に設けられている。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
（本発明の開閉弁）34が設けられている。The water pipe 30 upstream of the branch between the heat exchanger 31 and the bypass water passage 32 has a governor valve that keeps the inflowing water amount constant even if the water pressure flowing into the heat exchanger 31 and the bypass water passage 32 changes. It is provided in the electric water flow control device 33 in which the function and the function of the water flow control valve for controlling the water flow are combined. Further, the bypass water channel 32 is provided with a throttle valve (an opening / closing valve of the present invention) 34 that can adjust the amount of water passing through the bypass water channel 32 and open / close the bypass water channel 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。The throttle ratio of the electric water flow controller 33 is the same as the throttle valve 34 or smaller than the throttle valve 34 in order to regulate the total amount of water flowing into the heat exchanger 31 and the bypass water passage 32. In addition, the electric water flow control device 33 and the throttle valve 34 drive a valve body capable of opening and closing a water passage using a geared motor as a means for adjusting the water flow.
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、電動水量制御装置33、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. The burner 11 is controlled according to the outputs of the controller 44 and various sensors operated by the user. The sparker 45 that ignites, the source solenoid valve 22, the main solenoid valve 23, the proportional valve 24, the switching solenoid valve 25, the electric water amount control device 33, and the throttle valve 34 are energized.
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、熱交換器31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 interlock with the frame rod 46 and the thermocouple 47 for detecting the flame of the burner 11 and the air-fuel ratio, the electric water amount control device 33 and the valve body of the throttle valve 34, and detect the opening degree. Potentiometer 48, 49,
An air volume detection sensor 50 that detects the air volume of the blower 13 based on the rotation speed, an incoming water temperature sensor 51 that detects the temperature of water flowing into the heat exchanger 31 and the bypass water passage 32, and hot water that detects the hot water temperature that has passed through the heat exchanger 31. A hot water outlet temperature sensor 53 that detects the mixed hot water temperature that passes through the temperature sensor 52, the heat exchanger 31, and the bypass water passage 32, and a water amount detection sensor 54 that detects the amount of water flowing into the heat exchanger 31 and the bypass water passage 32 are provided. .
なお、風量検出センサ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。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、送風機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。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 is rotated by the flow of water, and generates a pulse signal according to the rotation of the rotating body. Then, the computer 41
The rotation speed of the blower 13 and the rotation speed of the rotating body are detected from the intervals of the pulse signals generated by the air volume detection sensor 50 and the water volume detection sensor 54 to detect the air volume and the water volume.
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 described.
使用者が給湯口に接続されたカランを操作し、水配管
30に水流が生じると、水量検出センサ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
より決定される。そして、送風機13は燃焼量に応じた風
量をバーナ11に供給するように電圧が制御される。つま
り、燃焼量と送風機13の印加電圧（風量）とは比例関係
にある。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。The user operates the curran connected to the hot water supply port to
When a water flow occurs in 30, the rotating body in the water amount detection sensor 54 rotates and combustion is started. The combustion amount after the start of combustion is the amount of water obtained by various sensors, the incoming water temperature, the hot water temperature that has passed through the heat exchanger 31, and the mixing hot water temperature (outlet temperature) so that the set temperature set by the controller 44 is obtained. Etc. The voltage of the blower 13 is controlled so as to supply the burner 11 with an air volume corresponding to the combustion amount. That is, the combustion amount and the applied voltage (air amount) of the blower 13 are in a proportional relationship. Then, the proportional valve 24 and the switching solenoid valve 25 are energized and controlled so that a gas amount corresponding to the rotation speed of the blower 13 and the temperature of the flame of the burner 11 can be obtained. The amount of combustion is determined by the temperature of the hot water that has passed through the heat exchanger 31, at which the water (drain water) generated by combustion does not adhere to the heat exchanger 31 (for example, 60
℃) is maintained above.
絞り弁34は、入水温度、設定温度、熱交換器31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31との流
通抵抗の比は、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 incoming water temperature, the set temperature, the hot water temperature passing through the heat exchanger 31, and the outgoing hot water temperature. Note that this fixing is set so that the flow rate of water flowing through the bypass water passage 32 is twice the amount of water flowing through the heat exchanger 31. That is, the flow resistance ratio between the bypass water passage 32 and the heat exchanger 31 is set to about 2: 1 by the throttle valve 34. Also,
The fixed opening of the throttle valve 34 is released when the amount of incoming water is small or when the outlet water temperature is lowered, and the throttle valve 34 is energized and controlled so that the opening is calculated according to the amount of incoming water and the outlet temperature. It
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 amount control device 33 is energized and controlled so as not to exceed the maximum flow rate required to obtain the hot water discharge temperature.
次に、燃焼量の制御について詳述する。 Next, the control of the combustion amount will be described in detail.
燃焼量Ｑは、フィードフォワード燃焼量FFと、熱交容
量補正燃焼量Ｋと、空燃比補正燃焼量Ｔと、比例補正燃
焼量Ｐと、積分補正燃焼量Ｉと加算したもので、 Ｑ＝FF＋Ｋ＋Ｔ＋Ｐ＋Ｉの式で表される。The combustion amount Q is a sum of the feedforward combustion amount FF, the heat exchange capacity correction combustion amount K, the air-fuel ratio correction combustion amount T, the proportional correction combustion amount P, and the integral correction combustion amount I, and Q = FF + K + T + P + I It is expressed by the formula.
なお、フィードフォワード燃焼量FFはフィードフォワ
ード燃焼量算出手段によって算出され、熱交容量補正燃
焼量Ｋは熱交容量補正燃焼量算出手段によって算出さ
れ、空燃比補正燃焼量Ｔは空燃比補正燃焼量算出手段に
よって算出され、比例補正燃焼量Ｐは比例補正燃焼量算
出手段によって算出され、積分補正燃焼量Ｉは積分補正
燃焼量算出手段によって算出される。そして、これら本
発明のフィードフォワード燃焼量算出手段、熱交容量補
正燃焼量算出手段、空燃比補正燃焼量算出手段、比例補
正燃焼量算出手段、積分補正燃焼量算出手段は、それぞ
れマイクロコンピュータ41にプログラミングされたもの
で、それぞれが独立して演算を行うものである。The feedforward combustion amount FF is calculated by the feedforward combustion amount calculation means, the heat exchange capacity corrected combustion amount K is calculated by the heat exchange capacity corrected combustion amount calculation means, and the air-fuel ratio corrected combustion amount T is the air-fuel ratio corrected combustion amount. The proportional correction combustion amount P is calculated by the calculation means, the proportional correction combustion amount calculation means is calculated, and the integral correction combustion amount I is calculated by the integral correction combustion amount calculation means. Then, these feed-forward combustion amount calculation means, heat exchange capacity correction combustion amount calculation means, air-fuel ratio correction combustion amount calculation means, proportional correction combustion amount calculation means, integral correction combustion amount calculation means of these present invention, respectively to the microcomputer 41. It is programmed and each operates independently.
フィードフォワード燃焼量FFは、コントローラ44で設
定された設定温度Ts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
された水量Ｗ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 FF is the difference between the set temperature Ts set by the controller 44 and the water temperature Ti detected by the water temperature sensor 51, the water amount W 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/effの式で表される。 This is expressed by the formula of FF = (Ts−Ti) W / eff.
熱交容量補正燃焼量Ｋについて具体的に説明する。 The heat exchange capacity corrected combustion amount K will be specifically described.
給湯器の熱交換器31では、燃焼部10の燃焼により得ら
れた熱を、内部を流れる水と熱交換することにより、水
を加熱している。The heat exchanger 31 of the water heater heats the water by exchanging the heat obtained by the combustion of the combustion unit 10 with the water flowing inside.
熱交換器31は、銅等の金属で構成され、熱容量を保有
し、水の温度を所定温度に上昇させることができる。The heat exchanger 31 is made of a metal such as copper, has a heat capacity, and can raise the temperature of water to a predetermined temperature.
つまり、熱交換器31に、所定温度でかつ所定流量の水
を流し、通過後の温度を所定湯温に上昇させる場合
は、、熱交換器31にエネルギー（Ｕ）を与え、熱交換器
31を（比熱×目標温度×熱交換器31の重量）からなる目
標熱容量に保つ必要がある。That is, when water having a predetermined temperature and a predetermined flow rate is flown through the heat exchanger 31 to raise the temperature after passing to the predetermined hot water temperature, energy (U) is applied to the heat exchanger 31 to
It is necessary to keep 31 at the target heat capacity consisting of (specific heat x target temperature x weight of heat exchanger 31).
例えば、熱交換器31を所定流量の水が流れる時に所定
温度に上昇させるために必要な熱交換器31の温度を200
℃とした場合、（比熱×熱交換器31の重量×200℃）か
らなるエネルギー（Ｕ）を熱交換器31に与えることによ
り、所定流量の水を所定温度上昇させることができる。For example, the temperature of the heat exchanger 31 required to raise it to a predetermined temperature when a predetermined flow rate of water flows is 200
When the temperature is set to ° C, energy (U) consisting of (specific heat x weight of heat exchanger 31 x 200 ° C) is applied to the heat exchanger 31 to raise a predetermined temperature of water at a predetermined temperature.
そして、消火直後の再点火のように、初めから熱交換
器が200℃に相当する熱容量を保有している場合は、最
初から所定温度上昇した湯を出湯させることができる
が、熱交換器31の熱容量が少ない状態（熱交換器31の温
度が低い状態）から燃焼を開始した場合は、上述のエネ
ルギー（Ｕ）を与えても、熱交換器31が熱平衡状態にな
るまで水の温度を所定温度上昇させることはできない。Then, when the heat exchanger has a heat capacity equivalent to 200 ° C. from the beginning like re-ignition immediately after extinguishing, hot water having a predetermined temperature rise from the beginning can be discharged, but the heat exchanger 31 When the combustion is started from a state in which the heat capacity is low (state where the temperature of the heat exchanger 31 is low), the temperature of water is kept at a predetermined value until the heat exchanger 31 reaches a thermal equilibrium state even if the above-mentioned energy (U) is applied. The temperature cannot be raised.
そこで、本実施例では、熱平衡（例えば、200℃に相
当する熱容量）に至る途中の熱量（熱交換器31の熱容量
を補正する燃焼量）を求め、熱量分を余分に熱交換器31
に与えている。Therefore, in the present embodiment, the amount of heat (the amount of combustion that corrects the heat capacity of the heat exchanger 31) on the way to thermal equilibrium (for example, the heat capacity equivalent to 200 ° C.) is calculated, and the heat quantity is added to the heat exchanger 31.
Is given to.
したがって、この結果、熱交換器31が熱平衡に至る途
中においても、使用者の設定した出湯温度を得ることが
できる。Therefore, as a result, the tapping temperature set by the user can be obtained even while the heat exchanger 31 reaches the thermal equilibrium.
熱交換器31に余分に与える熱量分に相当する燃焼量
（熱交容量補正燃焼量Ｋ）は、具体的には次のように求
められる。The combustion amount (heat exchange capacity correction combustion amount K) corresponding to the amount of heat that is additionally applied to the heat exchanger 31 is specifically determined as follows.
コントローラ44で設定された設定温度Tsの湯が得られ
るのに必要な熱交換器31の目標温度Teを算出する。ま
た、湯温センサ52によって検出した熱交換器31の湯温Tm
を現在の熱交換器31の温度とする。そして、現在の熱交
換器31の温度を、目標の熱交換器の温度とするのに必要
とする熱量（熱交容量補正燃焼量Ｋ）を算出する。つま
り、目標温度Teと現在の湯温Tmとの温度差に、熱交換器
31の有する熱容量Ｍ（これは、使用される熱交換器31の
比熱、重量からあらかじめ設定された値）を乗算して、
熱交容量補正燃焼量Ｋを算出する。これは、Ｋ＝（Te−
Tm）Ｍの式で表される。The target temperature Te of the heat exchanger 31 required to obtain the hot water having the set temperature Ts set by the controller 44 is calculated. Further, the hot water temperature Tm of the heat exchanger 31 detected by the hot water temperature sensor 52
Is the current temperature of the heat exchanger 31. Then, the amount of heat required to bring the current temperature of the heat exchanger 31 to the target temperature of the heat exchanger (heat exchange capacity corrected combustion amount K) is calculated. That is, the temperature difference between the target temperature Te and the current hot water temperature Tm is
Multiplying the heat capacity M of 31 (this is a preset value from the specific heat and weight of the heat exchanger 31 used),
The heat exchange capacity corrected combustion amount K is calculated. This is K = (Te-
It is represented by the formula of Tm) M.
なお、熱交容量補正燃焼量Ｋの算出は、熱交換器31を
通過した湯と、バイパス水路32を通過した水とが混合さ
れた出湯温からでも算出できる。この算出方法は、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Toとの差、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とを乗
算したもので、Ｋ＝ａ（Ts−To）Ｍの式で表される。The calculation of the heat exchange capacity corrected combustion amount K can also be calculated from the hot water temperature obtained by mixing the hot water that has passed through the heat exchanger 31 and the water that has passed through the bypass channel 32. This calculation method is based on the set temperature Ts set by the controller 44 and the hot water temperature sensor 53.
Difference between the hot water temperature To detected by the heat exchanger 31 and the heat capacity M preset according to the heat exchanger 31 used, and the heat exchanger 31
Is multiplied by a constant a corresponding to the bypass ratio between the bypass water channel 32 and the bypass water channel 32, and is represented by the equation K = a (Ts-To) M.
空燃比補正燃焼量Ｔについて具体的に説明する。 The air-fuel ratio corrected combustion amount T will be specifically described.
制御装置40は、演算によって求められた目標燃焼量に
基づいて送風機13の風量（印加電圧）を制御するととも
に、送風機13の風量（回転速度）を基に比例弁24の開度
（ガスの供給量、つまり燃焼量）を制御するファン先行
型に設けられている。また、制御装置40は、サーモカッ
プル47によって、バーナ11の炎の空燃比を検出し、その
空燃比が所定空燃比に維持されるように、比例弁24の開
度を空燃比補正するものである。The control device 40 controls the air volume (applied voltage) of the blower 13 based on the target combustion amount obtained by the calculation, and based on the air volume (rotation speed) of the blower 13, the opening degree (gas supply) of the proportional valve 24. It is installed in the fan preceding type that controls the amount, that is, the combustion amount. Further, the control device 40 detects the air-fuel ratio of the flame of the burner 11 by the thermocouple 47, and corrects the opening degree of the proportional valve 24 so that the air-fuel ratio is maintained at the predetermined air-fuel ratio. is there.
ここで、送風機13の風量を目標燃焼量に応じて制御す
るとともに、比例弁24の開度を送風機13の風量に応じて
制御するファン先行型では、比例弁24を介して供給され
るガス量は、目標燃焼量に対応したものとなるため、補
正の必要はない。Here, in the fan preceding type in which the air volume of the blower 13 is controlled according to the target combustion amount, and the opening of the proportional valve 24 is controlled according to the air volume of the blower 13, the amount of gas supplied through the proportional valve 24. Does not need to be corrected because it corresponds to the target combustion amount.
しかし、比例弁24の開度を空燃比に応じて補正してい
るため、空燃比補正によりガス量が変化し、目標の燃焼
量が得られない。However, since the opening of the proportional valve 24 is corrected according to the air-fuel ratio, the gas amount changes due to the air-fuel ratio correction, and the target combustion amount cannot be obtained.
そこで、本実施例では、空燃比補正によって増減され
るガス量（燃焼量）を産出し、目標燃焼量を補正してい
る。Therefore, in this embodiment, the amount of gas (combustion amount) increased or decreased by the air-fuel ratio correction is produced, and the target combustion amount is corrected.
例えば、空燃比補正により、ガス量が減少する場合に
は、減少分を目標燃焼量に予め加算することにより、空
燃比補正が行われても、目標燃焼量を確実に得ることが
できる。For example, when the gas amount decreases due to the air-fuel ratio correction, the target combustion amount can be reliably obtained by adding the decrease amount to the target combustion amount in advance even if the air-fuel ratio correction is performed.
具体的には、空燃比補正手段が空燃比を所定空燃比に
維持するために、比例弁24の開度が変化し（ガス量の変
化）、演算によって求められた目標燃焼量（送風機13の
回転速度によって設定される燃焼量）と、実際に空燃比
補正が行われて比例弁24からバーナ11に供給される現実
燃焼量（ガスの供給量）とが、異なってしまう。つま
り、現実燃焼量は、送風機13の送風量により設定される
目標燃焼量に対して、空燃比補正手段により空燃比補正
量Ｎだけ増減することとなる。そこで、空燃比補正によ
りガスが増減する場合であっても、制御装置40は、現実
燃焼量が目標燃焼量と一致するように、目標燃焼量（送
風機13の回転速度）を補正する。Specifically, in order for the air-fuel ratio correction means to maintain the air-fuel ratio at a predetermined air-fuel ratio, the opening of the proportional valve 24 changes (change in gas amount), and the target combustion amount (calculated by the blower 13) obtained by calculation is changed. The combustion amount set by the rotation speed) is different from the actual combustion amount (gas supply amount) actually supplied to the burner 11 from the proportional valve 24 after the air-fuel ratio is corrected. That is, the actual combustion amount is increased or decreased by the air-fuel ratio correction amount N by the air-fuel ratio correction means with respect to the target combustion amount set by the air flow amount of the blower 13. Therefore, even if the amount of gas increases or decreases due to the air-fuel ratio correction, the control device 40 corrects the target combustion amount (the rotation speed of the blower 13) so that the actual combustion amount matches the target combustion amount.
この補正量が空燃比補正燃焼量Ｔ（空燃比補正によっ
て増減するガス量を打ち消すための燃焼量）で、次のよ
うに求められる。This correction amount is the air-fuel ratio correction combustion amount T (the combustion amount for canceling the gas amount that increases or decreases due to the air-fuel ratio correction), and is calculated as follows.
空燃比補正量Ｎによって増減される燃焼量（ガス量に
よる燃焼量）は、上述のように、空燃比補正量Ｎである
ため、空燃比補正によってガス量が減る場合は、その
分、送風機13の回転速度を増加すれば良く、逆に空燃比
補正によってガス量が増える場合は、その分、送風機13
の回転速度を減らせば良い。つまり、空燃比補正燃焼量
Ｔ（送風量に対応する燃焼量）は、空燃比補正量Ｎ（ガ
ス量に対応する燃焼量）の正負を反転させることによっ
て求められる。これは、Ｔ＝−Ｎの式で表される。Since the combustion amount increased or decreased by the air-fuel ratio correction amount N (combustion amount by the gas amount) is the air-fuel ratio correction amount N as described above, when the gas amount is decreased by the air-fuel ratio correction, the blower 13 If the gas amount increases due to the air-fuel ratio correction, on the contrary, the fan 13
You can reduce the rotation speed of. That is, the air-fuel ratio correction combustion amount T (combustion amount corresponding to the blown air amount) is obtained by reversing the sign of the air-fuel ratio correction amount N (combustion amount corresponding to the gas amount). This is represented by the formula T = -N.
比例補正燃焼量Ｐの算出は、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によって検出した出湯
温度Toとの差と、水量検出センサ54によって検出された
水量Ｗと、比例定数Ｅとから算出される。The proportional correction combustion amount P is calculated by calculating the difference between the set temperature Ts set by the controller 44 and the hot water temperature To detected by the hot water temperature sensor 53, the water amount W detected by the water amount detection sensor 54, and the proportional constant E. Calculated from
これは、Ｐ＝Ｅ（Ts−To）Ｗの式で表される。なお、
（Ts−To）Ｗは水量の変化に応じた偏差値を示す。また
本実施例では、Ｅ＝0.8前後が適切である。This is represented by the equation P = E (Ts-To) W. In addition,
(Ts-To) W shows the deviation value according to the change of the amount of water. Further, in this embodiment, E = about 0.8 is appropriate.
積分補正燃焼量Ｉの算出は、コントローラ44で設定さ
れた設定温度Tsと出湯温センサ53によって検出した出湯
温度Toとの差を積分したものである。The integrated correction combustion amount I is calculated by integrating the difference between the set temperature Ts set by the controller 44 and the hot water temperature To detected by the hot water temperature sensor 53.
これは、In＝In-1＋bWn（Ts−To）の式で表される。
なお、ｂ×Wnは積分定数を示し、Inは今回の算出する積
分補正燃焼量で、In-1は前回の算出した積分補正燃焼量
である。積分補正燃焼量Ｉの変化量を流量Wnに比例させ
ることにより、フィードバックに要する時間遅れが補正
され、積分補正燃焼量Ｉが水量全体に亘って均一評価す
ることができる。また、積分補正燃焼量ＩをFF値の変化
比の積とし、一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。This is represented by the formula: I n = I n-1 + bW n (Ts-To).
It should be noted that b × W n represents an integration constant, I n is an integrated correction combustion amount calculated this time, and I n−1 is an integration correction combustion amount calculated last time. By making the amount of change in the integrated corrected combustion amount I proportional to the flow rate W n , the time delay required for feedback is corrected, and the integrated corrected combustion amount I can be uniformly evaluated over the entire water amount. Alternatively, the integrated corrected combustion amount I may be set as the product of the change ratios of the FF values, and the once converged integrated value may be rationally evaluated, and then the change may be dealt with.
燃焼量Ｑ＝FF＋Ｋ＋Ｔ＋Ｐ＋Ｉの式の内、Ｐ＋Ｉは、
出湯温度から燃焼誤差を補正するもので、FF＋Ｐ＋Ｉと
することで、フィードフォワードにより求められたの燃
焼量の誤差を抑えることができる。In the equation of combustion amount Q = FF + K + T + P + I, P + I is
Combustion error is corrected from the tap water temperature. By setting FF + P + I, it is possible to suppress the error in the amount of combustion determined by feedforward.
また、上記FF＋Ｐ＋Ｉに熱交容量補正燃焼量Ｋを加算
することにより、熱交換器31の熱容量による残存熱量分
が補正されるため、熱交換器31が熱平衡に至る途中にお
いても、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。Further, by adding the heat exchange capacity-corrected combustion amount K to the above FF + P + I, the amount of residual heat due to the heat capacity of the heat exchanger 31 is corrected, so that even when the heat exchanger 31 reaches thermal equilibrium, the user's setting The discharged hot water temperature can be supplied to the user.
さらに、上記FF＋Ｋ＋Ｐ＋Ｉに空燃比補正燃焼量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するため、空燃比補正により
ガスの供給量が変化しても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。Furthermore, by adding the air-fuel ratio correction combustion amount T to the above FF + K + P + I, the gas that is increased or decreased by the air-fuel ratio correction is corrected in advance to the combustion amount. Therefore, even if the gas supply amount changes due to the air-fuel ratio correction, The set hot water temperature can be supplied to the user.
以上、燃焼量Ｑ＝FF＋Ｋ＋Ｔ＋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。As described above, by setting the combustion amount Q = FF + K + T + P + I, the hot water temperature set by the user can always be stably supplied.
なお、燃焼量Ｑは、給湯器の能力によって最大燃焼量
と最小燃焼量が制限されるが、燃焼量Ｑが最大燃焼量と
最小燃焼量の範囲外でも、各フィードフォワード燃焼量
FF、熱交容量補正燃焼量Ｋ、空燃比補正燃焼量Ｔ、比例
補正燃焼量Ｐ、積分補正燃焼量Ｉのそれぞれ計算はコン
ピュータ41によって続行される。Although the maximum combustion amount and the minimum combustion amount of the combustion amount Q are limited by the capacity of the water heater, even if the combustion amount Q is outside the range of the maximum combustion amount and the minimum combustion amount, each feedforward combustion amount
The computer 41 continues the calculation of FF, heat exchange capacity correction combustion amount K, air-fuel ratio correction combustion amount T, proportional correction combustion amount P, and integral correction combustion amount I.
（変形例） なお、燃焼量に応じた電圧を送風機に印加するため、
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に
よって求められた電圧と、熱交換量補正によって求めら
れた電圧と、空燃比補正によって求められた電圧と、比
例補正によって求められた電圧と、積分補正によって求
められた電圧とを加算して求めるものである。(Modification) Since a voltage according to the combustion amount is applied to the blower,
The combustion amount may be calculated directly as the voltage. That is, the voltage applied to the blower is the voltage obtained by the feedforward, the voltage obtained by the heat exchange amount correction, the voltage obtained by the air-fuel ratio correction, the voltage obtained by the proportional correction, and the integral. It is obtained by adding the voltage obtained by the correction.
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に本発明を適用しても良
い。Also, the water heater with a bypass channel was shown as an example,
The present invention may be applied to a water heater having no bypass water channel.
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給湯器に適用しても良い。Furthermore, although an example in which gas is used as the fuel is shown, it may be applied to a water heater using a 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…熱交換器、４…制御装置 ５…フィードフォワード燃焼量算出手段 ６…熱交容量補正燃焼量算出手段 ７…空燃比補正燃焼量算出手段 ８…比例補正燃焼量算出手段 ９…積分補正燃焼量算出手段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 unit, 2 ... Blower, 3 ... Heat exchanger, 4 ... Control device, 5 ... Feedforward combustion amount calculation means, 6 ... Heat exchange capacity correction combustion amount calculation means, 7 ... Air-fuel ratio correction combustion amount calculation means, 8 ... Proportional Corrected combustion amount calculation means 9 ... Integral corrected combustion amount calculation means
Claims (1)
水を加熱する熱交換器と、 （ｅ）前記燃焼部における燃焼状態の空燃比を検出する
空燃比センサと、 （ｆ）（ｆ−１）前記燃焼部における目標の燃焼量を決
定する目標燃焼量決定手段、 （ｆ−２）この目標燃焼量決定手段で決定された目標の
燃焼量に基づいて前記送風機の送風量を制御する送風機
制御手段、 （ｆ−３）前記送風機の実際の送風量に基づいて前記比
例弁の開度を制御する比例弁制御手段、 （ｆ−４）前記空燃比センサの検出する空燃比に応じて
前記比例弁の開度を補正する空燃比補正手段、を備える
ファン先行型の制御装置と、 を備えた給湯器において、 前記制御装置の前記目標燃焼量決定手段は、 （ｆ−１−１）設定温度、入水温度、水量などより、出
湯温度を設定温度とするのに必要とされるフィードフォ
ワード燃焼量を算出するフィードフォワード燃焼量算出
手段と、 （ｆ−１−２）設定温度が得られるのに必要な前記熱交
換器の目標熱容量から現在の前記熱交換器の現在熱容量
を差し引いた熱容量差に相当する熱交容量補正燃焼量を
算出する熱交容量補正燃焼量算出手段と、 （ｆ−１−３）前記空燃比補正手段によって増減される
燃焼量の変化を打ち消す空燃比補正燃焼量を算出する空
燃比補正燃焼量算出手段と、 （ｆ−１−４）設定温度と出湯温度との偏差量を比例制
御により補正する比例補正燃焼量を算出する比例補正燃
焼量算出手段と、 （ｆ−１−５）設定温度と出湯温度との偏差量を積分制
御により補正する積分補正燃焼量を算出する積分補正燃
焼量算出手段とを備え、 前記フィードフォワード燃焼量、前記熱交容量補正燃焼
量、前記空燃比補正燃焼量、前記比例補正燃焼量、前記
積分補正燃焼量を加算して、前記目標の燃焼量を決定す
る ことを特徴とする給湯器の制御装置。1. A combustion unit for combusting fuel; (b) a blower for supplying combustion air to the combustion unit; and (c) a proportional valve for adjusting the amount of fuel supplied to the combustion unit. And (d) heat exchanged between the heat obtained by combustion of fuel and water,
A heat exchanger that heats water; (e) an air-fuel ratio sensor that detects the air-fuel ratio of the combustion state in the combustion section; (f) (f-1) target combustion that determines the target combustion amount in the combustion section. Amount determining means, (f-2) blower control means for controlling the blower amount of the blower based on the target combustion amount decided by the target burning amount determining means, (f-3) actual blower amount of the blower Proportional valve control means for controlling the opening of the proportional valve on the basis of (f-4) air-fuel ratio correction means for correcting the opening of the proportional valve according to the air-fuel ratio detected by the air-fuel ratio sensor. In a water heater provided with a fan preceding type control device, the target combustion amount determining means of the control device sets (f-1-1) the hot water outlet temperature to the set temperature based on the set temperature, the incoming water temperature, the water amount, and the like. Feed-forward combustion needed to And (f-1-2) a heat capacity difference obtained by subtracting the current heat capacity of the heat exchanger from the target heat capacity of the heat exchanger necessary to obtain the set temperature. And (f-1-3) an air-fuel ratio corrected combustion amount that cancels a change in the combustion amount increased or decreased by the air-fuel ratio correction unit. (F-1-4) proportional air-fuel ratio combustion amount calculating means for calculating, and (f-1-4) proportional correction combustion amount calculating means for calculating a proportional correction combustion amount for correcting the deviation amount between the set temperature and the hot water temperature by proportional control; -1-5) An integrated correction combustion amount calculation means for calculating an integrated correction combustion amount for correcting the deviation amount between the set temperature and the hot water temperature by integral control, the feedforward combustion amount, the heat exchange capacity correction combustion amount. , The air-fuel Correction combustion amount, the proportional correction combustion amount, the integral correction combustion amount by adding the control device of the water heater and determining the combustion amount of said target.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63220720A JPH081329B2 (en) | 1988-09-02 | 1988-09-02 | Water heater controller |
| KR1019890012808A KR940004184B1 (en) | 1988-09-02 | 1989-09-02 | Combustion control device of how water feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63220720A JPH081329B2 (en) | 1988-09-02 | 1988-09-02 | Water heater controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0268448A JPH0268448A (en) | 1990-03-07 |
| JPH081329B2 true JPH081329B2 (en) | 1996-01-10 |
Family
ID=16755461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63220720A Expired - Fee Related JPH081329B2 (en) | 1988-09-02 | 1988-09-02 | Water heater controller |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH081329B2 (en) |
| KR (1) | KR940004184B1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4649027B2 (en) * | 1999-09-28 | 2011-03-09 | 株式会社東芝 | Ceramic circuit board |
| JP2008053759A (en) * | 2000-08-09 | 2008-03-06 | Mitsubishi Materials Corp | Power module and power module with heat sink |
| JP4434545B2 (en) | 2001-03-01 | 2010-03-17 | Ｄｏｗａホールディングス株式会社 | Insulating substrate for semiconductor mounting and power module |
| KR101643867B1 (en) * | 2014-10-30 | 2016-08-01 | 린나이코리아 주식회사 | The initial ignition of the heater control method for stable water supply |
| KR20240000613U (en) | 2022-10-04 | 2024-04-12 | 유재현 | Tentpole connection member for folding type tent, folding type tent using the same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6256739A (en) * | 1985-09-02 | 1987-03-12 | Hitachi Chem Co Ltd | Delivering hot-water temperature control device |
| JPS62252826A (en) * | 1986-04-23 | 1987-11-04 | Rinnai Corp | Burner |
| JPS63148050A (en) * | 1986-12-11 | 1988-06-20 | Hanshin Electric Co Ltd | Combustion control method for water heater |
-
1988
- 1988-09-02 JP JP63220720A patent/JPH081329B2/en not_active Expired - Fee Related
-
1989
- 1989-09-02 KR KR1019890012808A patent/KR940004184B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR940004184B1 (en) | 1994-05-16 |
| JPH0268448A (en) | 1990-03-07 |
| KR900005121A (en) | 1990-04-13 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |