JPS6314193Y2 - - Google Patents
Info
- Publication number
- JPS6314193Y2 JPS6314193Y2 JP1982088025U JP8802582U JPS6314193Y2 JP S6314193 Y2 JPS6314193 Y2 JP S6314193Y2 JP 1982088025 U JP1982088025 U JP 1982088025U JP 8802582 U JP8802582 U JP 8802582U JP S6314193 Y2 JPS6314193 Y2 JP S6314193Y2
- Authority
- JP
- Japan
- Prior art keywords
- supply amount
- hot water
- air
- air supply
- water temperature
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 230000007246 mechanism Effects 0.000 claims description 25
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 230000007423 decrease Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
Landscapes
- Control Of Combustion (AREA)
- Regulation And Control Of Combustion (AREA)
Description
【考案の詳細な説明】
本考案は、空気ガス混合装置と、空気供給量の
調整に応じてガス供給量を自動調整するゼロガバ
ナ及び、湯温検出器の検出温度に基づいて空気供
給用送風機の回転数を、湯温が設定温度に維持さ
れるように制御する機構とを設けてある湯沸器に
おける燃焼制御装置に関する。[Detailed description of the invention] The present invention consists of an air gas mixing device, a zero governor that automatically adjusts the gas supply amount according to the adjustment of the air supply amount, and a blower for supplying air based on the temperature detected by the hot water temperature sensor. The present invention relates to a combustion control device for a water heater that is provided with a mechanism that controls the rotation speed so that the water temperature is maintained at a set temperature.
従来のこの種の湯沸器における燃焼制御装置
は、送風機の回転数変更のみによつて、空気供給
量、つまり、インプツトが調整されるべく構成さ
れていたが、これによるときは、出湯量を急激に
大きく減少させた場合、この出湯量の減少に伴な
い上昇した湯温検出に基づいて送風機の回転数を
下げる制御が行なわれるものの、実際には、送風
機回転部の慣性により送風機の回転数が敏速に低
下しないこと、つまり、送風機の追従性の悪さか
ら、過剰インプツトを招来し、そのため、湯温が
大きくオーバーシユートする危険があつた。 Conventional combustion control devices for this type of water heater were configured to adjust the air supply amount, that is, the input, only by changing the rotation speed of the blower. When a large sudden decrease occurs, the fan rotation speed is controlled to be lowered based on the detected hot water temperature that has increased due to the decrease in hot water output. Because the temperature did not drop quickly, that is, the blower's followability was poor, this led to excessive input, and as a result, there was a risk that the hot water temperature would greatly overshoot.
本考案は、かかる従来欠点を解消しようとする
点に目的を有する。 The purpose of the present invention is to overcome these conventional drawbacks.
本考案による湯沸器における燃焼制御装置は、
空気供給路の通過面積の変更により空気供給量を
大小2段に切替可能な機構と、ガス供給路の通過
面積の変更によりガス供給量を大小2段に切替可
能な機構とを設けるとともに、前記湯温検出器の
検出温度が設定温度に対して一定以上に上昇した
とき、前記切替機構を小供給量状態に自動的、か
つ、可逆的に切替える機構を設けてある事を特徴
とする。 The combustion control device for a water heater according to the present invention is
A mechanism capable of switching the air supply amount into two stages, large and small, by changing the passage area of the air supply path, and a mechanism capable of switching the gas supply amount into two stages, large and small, by changing the passage area of the gas supply path, and the above-mentioned The present invention is characterized in that a mechanism is provided that automatically and reversibly switches the switching mechanism to a small supply amount state when the temperature detected by the hot water temperature detector rises above a certain level with respect to the set temperature.
このような特徴構成をもつ本考案装置の作用
は、湯温が設定温度から大きく外れていない通常
の運転状態では、湯温の検出結果に基づいて送風
機の回転数を無段階的に変化させながらも、出湯
量が急激に大きく減少させられて湯温が設定温度
に対して一定以上に上昇したときには、その湯温
の検出に基づいて送風機の回転数が低下するのみ
ならず、前記両切替機構がともに小供給量状態に
自動的に切替わつて、送風機の追従性の悪さにか
かわらず、インプツトを敏速に低下させることが
できることであり、その結果、通常運転時は、送
風機の無段階的な回転数制御による精度の良い湯
温管理を行えるとともに、出湯量を急激に大きく
減少させたときの湯温のオーバーシユートを防止
又は、オーバーシユートするとしてもそれを極く
僅かに抑えることができ、湯沸器の使用の安全性
を向上できる効果が得られるに至つた。 The function of the device of the present invention, which has such a characteristic configuration, is that under normal operating conditions when the water temperature does not deviate significantly from the set temperature, the fan speed is changed steplessly based on the detection result of the water temperature. However, when the amount of hot water suddenly decreases and the hot water temperature rises above a certain level with respect to the set temperature, not only does the rotational speed of the blower decrease based on the detection of the hot water temperature, but also the switching mechanism Both automatically switch to a small supply amount state, and the input can be quickly reduced regardless of the blower's poor follow-up performance.As a result, during normal operation, the blower's stepless It is possible to control the hot water temperature with high accuracy by controlling the rotation speed, and also to prevent overshoot of the hot water temperature when the amount of hot water is drastically reduced, or to minimize the overshoot even if there is an overshoot. This has resulted in the effect of improving the safety of using water heaters.
以下、本考案の実施例を図面に基づいて説明す
る。 Hereinafter, embodiments of the present invention will be described based on the drawings.
1は、給湯用熱交換器2を加熱するためのバー
ナ3に空気を強制的に供給可能で、かつ、その回
転数を変更することにより空気供給量を変更可能
な送風機であり、4は、空気オリフイス5とガス
オリフイス6により空気供給に伴なつて空気供給
路7内にガスを吸引混合させる空気ガス混合装置
であり、8は、空気供給量の調整に伴なつて変動
するロード圧PLを介して、空気供給量の調整に
応じてガス供給量を空燃比が設定値となるように
自動調整するゼロガバナである。9は湯温検出用
のサーミスタ、10は給湯栓11の開動に伴なつ
て水流が発生したときONする水流検知スイツ
チ、12はイグナイター、13はフレームロツ
ド、14はガス供給路15に介在させたメイン電
磁弁、16は混合オリフイスである。17は、前
記空気供給路7の通過面積の変更により空気供給
量を大小2段に切替可能な機構であり、18は、
前記ガス供給路15の通過面積の変更によりガス
供給量を大小2段に切替可能な機構であり、19
は、送風機1の回転に伴なつて発生した圧力を検
知する圧力スイツチであり、20は燃焼制御器で
ある。 1 is a blower that can forcibly supply air to a burner 3 for heating the hot water heat exchanger 2, and the amount of air supplied can be changed by changing its rotation speed; 4, This is an air-gas mixing device that suctions and mixes gas into an air supply path 7 as air is supplied by an air orifice 5 and a gas orifice 6. 8 is a device for adjusting the load pressure PL, which changes as the air supply amount is adjusted. This is a zero governor that automatically adjusts the gas supply amount according to the adjustment of the air supply amount so that the air-fuel ratio becomes the set value. 9 is a thermistor for detecting the temperature of hot water; 10 is a water flow detection switch that is turned ON when a water flow is generated as the hot water tap 11 is opened; 12 is an igniter; 13 is a flame rod; and 14 is a main interposed in the gas supply path 15. The solenoid valve 16 is a mixing orifice. 17 is a mechanism that can switch the air supply amount into two stages, large and small, by changing the passage area of the air supply path 7;
It is a mechanism that can switch the gas supply amount into two stages, large and small, by changing the passage area of the gas supply path 15, and 19
2 is a pressure switch that detects the pressure generated as the blower 1 rotates, and 20 is a combustion controller.
前記空気供給量切替機構17は、空気供給路7
を全開する姿勢と絞る姿勢とに揺動切替自在なダ
ンパー17Aと、通電によりこのダンパー17A
を可逆的に絞り姿勢に切替えるソレノイド17B
とから構成されている。 The air supply amount switching mechanism 17
There is a damper 17A that can be freely switched between a fully open position and a closed position, and this damper 17A is
Solenoid 17B that reversibly switches the
It is composed of.
前記ガス供給量切替機構18は、ガス供給路1
5に接続させたオリフイス18c付バイパス路1
8Aに、通電によりこのバイパス路18Aを可逆
的に閉塞可能な電磁弁18Bを介在させて構成さ
れている。 The gas supply amount switching mechanism 18 is connected to the gas supply path 1
Bypass path 1 with orifice 18c connected to 5
8A, an electromagnetic valve 18B that can reversibly close the bypass passage 18A by energization is interposed therebetween.
前記燃焼制御器20は、第2図に示すように、
シーケンス制御回路Aと、検出湯温に基づいて湯
温が設定温度に維持されるように前記送風機1の
回転数制御と前記両供給量切替17,18の切替
制御とを行なう制御回路B及び、検出湯温が設定
温度に対して一定以上に上昇したとき、前記両供
給量切替機構17,18を小供給量側に自動的、
かつ、可逆的に切替える回路Cとを備えている。 The combustion controller 20, as shown in FIG.
a sequence control circuit A; a control circuit B that controls the rotation speed of the blower 1 and the switching of the two supply amount switches 17 and 18 so that the hot water temperature is maintained at a set temperature based on the detected hot water temperature; When the detected hot water temperature rises above a certain level with respect to the set temperature, both supply rate switching mechanisms 17 and 18 are automatically set to the small supply rate side;
and a reversibly switching circuit C.
前記シーケンス制御回路Aは、送風機1を全速
回転させてその一定時間に亘るプレパージの終了
後、リレーR1を励磁させてメイン電磁弁14を
開動させ、燃焼点火させるものである。 The sequence control circuit A rotates the blower 1 at full speed and after completion of pre-purge for a certain period of time, relay R1 is energized to open the main solenoid valve 14 and ignite combustion.
前記制御回路Bは、サーミスタ9、湯温設定用
可変抵抗VR,抵抗R1,R2,R3,R4から構成さ
れるブリツジにより検出された偏差に基づいて比
例制御電圧を出力するP1D回路21と、これから
の出力(以下、PID出力と称する。)に応じてパ
ルストランストライアツクを介して送風機1の回
転数を制御する導通角制御回路22及び、PID出
力が第3図に示すように、インプツトIPの第1
設定値1p1に相当する値にまで下降したとき、リ
レーR2を励磁させて前記ソレノイド17B及び
電磁弁18Bを通電作動させ、つ、PID出力が第
3図に示すようにインプツトIPの第2設定値1p2
に相当する値にまで上昇したとき、ソレノイド1
7B及び電磁弁18Bへの通電を断つコンパレー
タOPとを備えている。従つて、第3図に示すよ
うに、インプツトIPの変更巾を大きくとり、か
つ、大インプツト時におけるロード圧PLを小さ
くし乍も、両供給量切替機構17,18が小イン
プツト時に小供給量状態に切替わることによつ
て、最小インプツト時におけるロード圧PLを、
ゼロガバナ8の作動に十分に足りる値にすること
ができる。 The control circuit B is a P1D circuit that outputs a proportional control voltage based on a deviation detected by a bridge composed of a thermistor 9, a variable resistor VR for setting hot water temperature, and resistors R 1 , R 2 , R 3 , and R 4 . 21, a conduction angle control circuit 22 that controls the rotation speed of the blower 1 via a pulse transformer according to the output (hereinafter referred to as PID output), and a PID output as shown in FIG. , the first input IP
When the value has decreased to a value corresponding to set value 1 p1 , relay R2 is excited to energize the solenoid 17B and solenoid valve 18B, and the PID output changes to the second input IP as shown in FIG. Setting value 1 p2
When solenoid 1 rises to a value corresponding to
7B and a comparator OP that cuts off power to the solenoid valve 18B. Therefore, as shown in FIG. 3, even though the range of input IP change is large and the load pressure PL is made small at the time of a large input, both supply amount switching mechanisms 17 and 18 are set to a small supply amount at a small input. By switching to the state, the load pressure PL at the minimum input,
The value can be set to a value that is sufficient for the operation of the zero governor 8.
前記切替機構Cは、イの電位とロの電位との比
較により検出湯温が設定温度よりも一定Δt以上
に高い温度であるか否かを検出し、有検出時、
PID出力を最小インプツト相当値にするコンパレ
ータOP′を備えている。従つて、検出湯温が設定
温度taに対して一定Δt以上に上昇したときには、
ソレノイド17B及び電磁弁18Bが通電作動す
るのみならず、送風機1の回転数が最小値になる
ように制御される。 The switching mechanism C detects whether or not the detected hot water temperature is higher than the set temperature by a certain Δt or more by comparing the potential in A and the potential in B, and when detected,
It is equipped with a comparator OP' that sets the PID output to a value equivalent to the minimum input. Therefore, when the detected hot water temperature rises above a certain Δt relative to the set temperature ta,
Not only is the solenoid 17B and the electromagnetic valve 18B energized, but the rotational speed of the blower 1 is controlled to the minimum value.
上記実施例構成によれば、例えば、第4図及び
第5図のt1の点で出湯量が急激に絞られて、検出
器9による検出湯温が設定温度taに対して一定
Δt以上に上昇したときには、両供給量切替機構
17,18が小供給量状態に切替わることによ
り、第3図においてa→a′やb→b′で示すよう
に、インプツトIPが低下するが、このインプツ
トIPの低下が、第4図実線に示すように瞬時に
行なわれ、従つて、湯温は第5図実線に示すよう
にあまり大きくは上昇せず、湯温のオーバーシユ
ートが回避される。因みに、送風機1の回転数制
御のみによつてインプツトIPを調整する従来装
置においては、出湯量が急激に絞られたときのイ
ンプツト変化が、第4図の点線の如きであり、こ
れによつて第5図点線の如く湯温は大きく上昇
し、いわゆるオーバーシユートしてしまう。 According to the configuration of the above embodiment, for example, at point t 1 in FIGS. 4 and 5, the amount of hot water coming out is suddenly reduced, and the hot water temperature detected by the detector 9 becomes equal to or higher than a certain Δt with respect to the set temperature ta. When the supply amount increases, both supply amount switching mechanisms 17 and 18 switch to the small supply amount state, and the input IP decreases as shown by a→a' and b→b' in FIG. The IP decreases instantaneously as shown by the solid line in FIG. 4, and therefore the hot water temperature does not rise too much as shown by the solid line in FIG. 5, thereby avoiding overshoot of the hot water temperature. Incidentally, in the conventional device that adjusts the input IP only by controlling the rotation speed of the blower 1, the input change when the hot water output is suddenly reduced is as shown by the dotted line in Fig. 4. As shown by the dotted line in Figure 5, the water temperature rises significantly, resulting in so-called overshoot.
第1図は湯沸器の概念図、第2図は制御回路
図、第3図はインプツトとロード圧との関係を示
すグラフ、第4図はインプツトの経時変化例を示
すグラフ、第5図は第4図に対応する湯温の経時
変化例を示すグラフである。
4……空気ガス混合装置、8……ゼロガバナ、
9……湯温検出器、1……送風機、B……制御機
構、7……空気供給路、17……空気供給量切替
機構、15……ガス供給路、18……ガス供給
量、切替機構、C……切替機構、17A……ダン
パー、17B……ソレノイド、18A……バイパ
ス路、18B……電磁弁。
Figure 1 is a conceptual diagram of a water heater, Figure 2 is a control circuit diagram, Figure 3 is a graph showing the relationship between input and load pressure, Figure 4 is a graph showing an example of input change over time, and Figure 5. is a graph corresponding to FIG. 4 showing an example of a change in water temperature over time. 4... Air gas mixing device, 8... Zero governor,
9... Hot water temperature detector, 1... Blower, B... Control mechanism, 7... Air supply path, 17... Air supply amount switching mechanism, 15... Gas supply path, 18... Gas supply amount, switching Mechanism, C...Switching mechanism, 17A...Damper, 17B...Solenoid, 18A...Bypass path, 18B...Solenoid valve.
Claims (1)
応じてガス供給量を自動調整するゼロガバナ8
及び、湯温検出器9の検出温度に基づいて空気
供給用送風機1の回転数を、湯温が設定温度に
維持されるように制御する機構Bとを設けてあ
る湯沸器における燃焼制御装置において、空気
供給路7の通過面積の変更により空気供給量を
大小2段に切替可能な機構17と、ガス供給路
15の通過面積の変更によりガス供給量を大小
2段に切替可能な機構18とを設けるととも
に、前記湯温検出器9の検出温度が設定温度に
対して一定以上に上昇したとき、前記切替機構
17,18を小供給量状態に自動的、かつ、可
逆的に切替える機構Cを設けてある事を特徴と
する湯供給における燃焼制御装置。 前記空気量切替機構17が、空気供給路7を
全開する姿勢と絞る姿勢とに揺動切替自在なダ
ンバー17Aと、これを切替作動させるソレノ
イド17Bとから構成されたものである実用新
案登録請求の範囲第項に記載の湯沸器におけ
る燃焼制御装置。 前記ガス量切替機構18が、ガス供給路15
に接続させたバイパス路18Aに、これを開閉
自在な電磁弁18Bを介装して構成されたもの
である実用新案登録請求の範囲第項又は第
項に記載の湯沸器における燃焼制御装置。[Scope of claim for utility model registration] Air gas mixing device 4 and zero governor 8 that automatically adjusts the gas supply amount according to the adjustment of the air supply amount
and a mechanism B for controlling the rotation speed of the air supply blower 1 based on the temperature detected by the water temperature detector 9 so that the water temperature is maintained at a set temperature. , a mechanism 17 that can switch the air supply amount into two stages, large and small, by changing the passage area of the air supply path 7; and a mechanism 18, which can switch the gas supply amount into two stages, large and small, by changing the passage area of the gas supply path 15. and a mechanism C that automatically and reversibly switches the switching mechanisms 17 and 18 to a small supply amount state when the temperature detected by the hot water temperature detector 9 rises above a certain level with respect to the set temperature. A combustion control device for hot water supply, characterized by being provided with. The air amount switching mechanism 17 is composed of a damper 17A that can swing between a fully open position and a closed position for the air supply path 7, and a solenoid 17B that switches and operates the damper 17A. A combustion control device for a water heater according to Scope 1. The gas amount switching mechanism 18 is connected to the gas supply path 15
The combustion control device for a water heater according to claim 1 or 2, which is constructed by interposing a solenoid valve 18B that can open and close the bypass passage 18A connected to the bypass passage 18A.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8802582U JPS58189453U (en) | 1982-06-11 | 1982-06-11 | Combustion control device in water heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8802582U JPS58189453U (en) | 1982-06-11 | 1982-06-11 | Combustion control device in water heater |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58189453U JPS58189453U (en) | 1983-12-16 |
JPS6314193Y2 true JPS6314193Y2 (en) | 1988-04-21 |
Family
ID=30096716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8802582U Granted JPS58189453U (en) | 1982-06-11 | 1982-06-11 | Combustion control device in water heater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58189453U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60169016A (en) * | 1984-02-10 | 1985-09-02 | Youei Seisakusho:Kk | Burning control device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52140033A (en) * | 1976-05-18 | 1977-11-22 | Matsushita Electric Ind Co Ltd | Combustion control device of forcedly supplying and exhausting gas |
JPS5465855A (en) * | 1977-11-02 | 1979-05-26 | Noritsu Co Ltd | Flow rate controlling device of water heater |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6115397Y2 (en) * | 1978-12-04 | 1986-05-13 |
-
1982
- 1982-06-11 JP JP8802582U patent/JPS58189453U/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52140033A (en) * | 1976-05-18 | 1977-11-22 | Matsushita Electric Ind Co Ltd | Combustion control device of forcedly supplying and exhausting gas |
JPS5465855A (en) * | 1977-11-02 | 1979-05-26 | Noritsu Co Ltd | Flow rate controlling device of water heater |
Also Published As
Publication number | Publication date |
---|---|
JPS58189453U (en) | 1983-12-16 |
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