JPS6314039A - Hot water supply device - Google Patents
Hot water supply deviceInfo
- Publication number
- JPS6314039A JPS6314039A JP15221086A JP15221086A JPS6314039A JP S6314039 A JPS6314039 A JP S6314039A JP 15221086 A JP15221086 A JP 15221086A JP 15221086 A JP15221086 A JP 15221086A JP S6314039 A JPS6314039 A JP S6314039A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- amount
- water temperature
- difference
- water
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 171
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 239000000446 fuel Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 241000282472 Canis lupus familiaris Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
Landscapes
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Control Of Combustion (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は家庭用の給湯機の湯温制御に関する。[Detailed description of the invention] Industrial applications The present invention relates to hot water temperature control for domestic water heaters.
従来の技術
一般に家庭用給湯機の湯温制御方法は、湯温偏差に基づ
き、比例・微分・積分のフィードバック制御を行なって
いる。ところが、瞬間式給湯機においては特に、負荷変
化量が大きく、熱量ゲイン（給湯能力を必要給湯量で割
った数値）が大きく、通常のフィードバック制御では、
湯温のオーバーシュート、アンダーシュートが大きく、
湯温の最適制御がむずかしい。2. Description of the Related Art In general, hot water temperature control methods for domestic water heaters perform proportional, differential, and integral feedback control based on hot water temperature deviations. However, with instantaneous water heaters in particular, the amount of load change is large and the calorie gain (the value obtained by dividing the hot water supply capacity by the required amount of hot water supply) is large, so with normal feedback control,
There is a large overshoot and undershoot of the water temperature.
It is difficult to optimally control the water temperature.
本発明は上記の従来の問題点を解消するもので、湯温偏
差と水量差から、給湯機の必要熱エネルギー状態を判定
し、給湯機の状態に応じた湯温制御を行ない、湯温の最
適制御を行なうものである。The present invention solves the above-mentioned conventional problems.The present invention determines the required thermal energy state of the water heater from the water temperature deviation and water volume difference, and controls the water temperature according to the water heater state. This is to perform optimal control.
問題点を解決するための手段
本発明は、湯温を検出する湯温検出器、水量を検出する
水量検出器、湯温と設定湯温の差を測定する湯温偏差測
定手段、水量と基準水量の差を測定する水量差測定手段
、水量差が変化した時、変化後の水量差の持続時間を測
定し前記持続時間がある値より短い時は水量変化を無視
し、水量変化有効判定手段、湯温偏差と水量差により熱
エネルギー供給量を判定する必要熱量判定手段、水量差
の変化がなく、湯温偏差がある値以下の時、熱エネルギ
ー供給量を積分制御により判定する積分制御手段および
湯温偏、差の大きさにより、熱エネルギー供給量の補正
動作間隔を可変する補正間隔制御手段からなるものであ
る。Means for Solving Problems The present invention provides a hot water temperature detector for detecting the hot water temperature, a water amount detector for detecting the water amount, a hot water temperature deviation measuring means for measuring the difference between the hot water temperature and the set hot water temperature, and a water amount and standard. A water amount difference measuring means for measuring a difference in water amount; when the water amount difference changes, the duration of the water amount difference after the change is measured; if the duration is shorter than a certain value, the water amount change is ignored; and a water amount change validity determining means , a necessary heat amount determining means for determining the amount of thermal energy supplied based on the water temperature deviation and the water amount difference, and an integral control means for determining the amount of thermal energy supplied by integral control when there is no change in the water amount difference and the hot water temperature deviation is below a certain value. and correction interval control means for varying the correction operation interval for the amount of thermal energy supplied depending on the hot water temperature deviation and the magnitude of the difference.
作用
本発明は前記構成のように、湯温偏差と水量差を湯温偏
差測定手段と水量差測定手段で計測し、全熱エネルギー
供給能力の何％を使うかを必要熱量判定手段で決定し、
給湯機内の燃料制御装置へ入力する。そして、燃料制御
装置が燃料を制御するので給湯機に供給される熱エネル
ギーが制御でき、その結果湯温を一定に保つことができ
る。湯温を制御する過程において、水量差の変化がなく
、湯温差が小さい時に湯温偏差による積分制御を行なう
。この時、短時間の水量差変化であれば水量変化有効判
定手段で無視することにより、外乱ノイズによる過敏な
制御を行なわないようにする。Effect The present invention, as configured above, measures the hot water temperature deviation and the water amount difference using the hot water temperature deviation measuring means and the water amount difference measuring means, and determines what percentage of the total heat energy supply capacity is to be used using the required heat amount determining means. ,
Input to the fuel control device inside the water heater. Since the fuel control device controls the fuel, the thermal energy supplied to the water heater can be controlled, and as a result, the temperature of the hot water can be kept constant. In the process of controlling the hot water temperature, integral control based on the hot water temperature deviation is performed when there is no change in the water amount difference and the hot water temperature difference is small. At this time, a short-time water amount difference change is ignored by the water amount change validity determining means, thereby preventing oversensitive control due to disturbance noise.
また、湯温偏差が大きく、水量差の変化が大きい時は、
前記必要熱量判定手段で決定した熱エネルギー供給量の
補正動作間隔を長くし、過度な燃料制御を防ぎ、湯温の
オーバーシュート・アンダーシュートを防止する。Also, when the water temperature deviation is large and the water volume difference is large,
The correction operation interval for the amount of thermal energy supplied determined by the necessary heat amount determining means is lengthened to prevent excessive fuel control and to prevent overshoot and undershoot of the hot water temperature.
前記作用により、湯温の最適制御が可能となる。The above action enables optimal control of the water temperature.
実施例
第１図は本発明の制御器を設けたガス瞬間式給湯機（以
下給湯装置という。）、第２図は本発明の制御器の一実
施例のブロック図を示す。Embodiment FIG. 1 shows a gas instantaneous water heater (hereinafter referred to as water heater) equipped with a controller of the present invention, and FIG. 2 shows a block diagram of an embodiment of the controller of the present invention.
（１１は水量検出器、（２）は熱交換器、（３）はガス
比例弁、（４）はガスバーナ、（５）は湯温検出器、（
６）は本発明の制御器、（力は水入口、（８）はガス入
口、を示す。(11 is a water quantity detector, (2) is a heat exchanger, (3) is a gas proportional valve, (4) is a gas burner, (5) is a hot water temperature detector, (
6) shows the controller of the present invention, (force is the water inlet, (8) is the gas inlet.
本発明の給湯装置の作用を説明する。The operation of the water heater of the present invention will be explained.
本発明の給湯装置では、水入口（７）から入った水は、
水検出器（１）でその水量が検出され、熱交換器（２）
にてガスバーナ（４）からの熱で加熱され湯となる。In the water heater of the present invention, water entering from the water inlet (7) is
The amount of water is detected by the water detector (1), and the heat exchanger (2)
It is heated by the heat from the gas burner (4) and becomes hot water.
その湯温は、湯温検出器（５）にて検出され、制御器（
６）に入力される。制御器（６）は、水量と湯温により
次に述べる手順に従って所定の湯温になるようにガス比
例弁（３）を駆動することにより、ガス量を制御する。The water temperature is detected by the water temperature detector (5), and the controller (
6). The controller (6) controls the gas amount by driving the gas proportional valve (3) so that the water temperature reaches a predetermined temperature according to the water amount and hot water temperature according to the following procedure.
第２図の本発明の制御器のブロック図を説明する０
水量検出器（１１は水量に応じたパルス信号を出力する
。湯温検出器（５）は湯温に応じた電圧信号を出力する
。（９）は湯温偏差測定器で、差動増巾器であり、湯温
設定の電圧信号と湯温検出器（５）の電圧信号を減算し
、湯温偏差測定を行ない、湯温偏差信号を電圧信号とし
て出力する。α１はマイクロコンピュータ（以下マイコ
ンという。）でＣＰＵ−ＲＯＭ・ＲＡＮおよび人出部を
有するワンチップマイコン、マイコンα〔は、水量検出
器（１）のパルス信号により水量を測定し、基準水量と
減算し水量差測定器ＬＡで水量差測定を行ない、水量差
を測定する。0 to explain the block diagram of the controller of the present invention in FIG. (9) is a hot water temperature deviation measuring device, which is a differential amplifier, and subtracts the voltage signal of the hot water temperature setting and the voltage signal of the hot water temperature detector (5) to measure the hot water temperature deviation, and calculates the hot water temperature. The deviation signal is output as a voltage signal.α1 is a microcomputer (hereinafter referred to as a microcomputer), and the microcomputer α is a one-chip microcomputer that has a CPU-ROM/RAN and an output section. Measure the amount of water, subtract it from the reference water amount, and measure the difference in water amount with the water amount difference measuring device LA to measure the difference in water amount.
この水量差の変化後の持続時間を測定し、ある値より短
いとき水量変化を無視し無効とし、水量変化有効判定を
行なう。そして前記の湯温偏差が例えば３ ｄｅｇ以上
であれば、水量差と湯温偏差から供給ガス量比率を計算
し必要熱量判定を行なう。The duration after the change in the water amount difference is measured, and when it is shorter than a certain value, the water amount change is ignored and invalidated, and the water amount change is determined to be valid. If the hot water temperature deviation is, for example, 3 degrees or more, the supplied gas amount ratio is calculated from the water amount difference and the hot water temperature deviation, and the required amount of heat is determined.
前記湯温偏差が３ｄｅｇ以内なら従来の積分演算を行な
う。そしてガス比例弁（３）へ駆動信号を出力する時、
湯温偏差が例えば３ｄθｇ以上の時は、駆動信号の変更
を第４図に示した補正間隔特性に従って補正間隔制御を
行なって駆動信号を出力する。If the hot water temperature deviation is within 3 degrees, conventional integral calculation is performed. And when outputting the drive signal to the gas proportional valve (3),
When the hot water temperature deviation is, for example, 3dθg or more, the drive signal is changed by controlling the correction interval according to the correction interval characteristics shown in FIG. 4, and outputs the drive signal.
次に前記のように構成した制御器の動作を第５図の７０
チヤートを用いて説明する。Next, the operation of the controller configured as described above is explained at 70 in FIG.
This will be explained using a chart.
水量と湯温偏差のアナログ量がマイコンへ入力される。Analog quantities of water volume and hot water temperature deviation are input to the microcontroller.
マイコン員のＲＯＭに記憶された第５図のフローチャー
トに示す手順に従ってガス比例弁駆動信号が決められ、
湯温を制御する。The gas proportional valve drive signal is determined according to the procedure shown in the flowchart of FIG. 5, which is stored in the ROM of the microcomputer staff.
Control the water temperature.
まず、ステップαυで湯温偏差と水量差変化を測定する
。ステップαので水量差の変化が外乱等のノイズでない
かどうか判定し、水量差変化によるガス量変更を行なう
かどうかの水量差変化有効測定を行なう。水量差変化が
有効であればステップ０３において、水量差と湯温偏差
のデータにより、その積に基いてあらかじめ決めた特性
曲線の第３図により必要熱量を求める。水量差変化が無
効であればステップα４へ行く。ステップα荀では湯温
偏差が例えば３ ｄｅｇかどうか判定する。３ ｄｅｇ
以上であればステップ９国へ行く、湯温偏差が３ ｄｏ
ｇ以内ならステップαつへ行き、従来の積分制御により
ガス量を決定する。ステップαＱでは第４図に従って湯
温偏差に応じてガス比例弁（３）への出力信号を出す時
間間隔を制御する。そしてステップαηでステップ０又
はステップαつで決めたガス比例弁（３）への駆動信号
を出力する。これらのステップを繰り返し湯温を制御す
る。First, in step αυ, the hot water temperature deviation and water volume difference change are measured. In step α, it is determined whether the change in the water amount difference is not noise such as a disturbance, and an effective measurement of the water amount difference change is performed to determine whether or not to change the gas amount due to the change in the water amount difference. If the change in water amount difference is valid, in step 03, the required amount of heat is determined from the data of the water amount difference and the hot water temperature deviation using the characteristic curve shown in FIG. 3, which is predetermined based on the product thereof. If the water amount difference change is invalid, proceed to step α4. In step α, it is determined whether the hot water temperature deviation is, for example, 3 degrees. 3 degrees
If it is above, go to step 9 country, water temperature deviation is 3 do
If it is within g, go to step α and determine the gas amount by conventional integral control. In step αQ, the time interval for outputting an output signal to the gas proportional valve (3) is controlled according to the hot water temperature deviation according to FIG. Then, in step αη, a drive signal to the gas proportional valve (3) determined in step 0 or step α is output. Repeat these steps to control the water temperature.
前記実施例の構成によれば、水量変化と湯温偏差に応じ
たガス量を必要に応じて決定でき、負荷変化の大きい時
にもオーバーシュートｅアンダーシュートの少ない湯温
制御が行なえる。According to the configuration of the embodiment described above, the gas amount can be determined according to the water amount change and hot water temperature deviation as necessary, and the hot water temperature can be controlled with little overshoot or undershoot even when the load change is large.
発明の効果
本発明は、水量差変化と湯温偏差を測定し、この結果に
より、あらかじめ決められた特性により、必要熱量を決
めるか、従来の積分制御を行うがを決定し、かつ、湯温
偏差が大きい時ばあらく、小さい時はこまかく湯温制御
を行なう。したがってオーバーシュート・アンダーシュ
ートカ少なく、かつ制定時間の短かい湯温制御を負荷変
化の大きい時も小さい時も行なえ、快適な湯温制御が行
なえる効果を生ずる。Effects of the Invention The present invention measures the water volume difference change and hot water temperature deviation, and based on the results, determines the required amount of heat or performs conventional integral control based on predetermined characteristics. When the deviation is large, the water temperature is controlled slowly, and when the deviation is small, the water temperature is controlled carefully. Therefore, hot water temperature control with less overshoot and undershoot and a short establishment time can be performed both when the load change is large and when the load change is small, resulting in the effect that comfortable water temperature control can be performed.
第１図は本発明の制御器を設けたガス瞬間式給湯機、第
２図は本発明の制御器の一実施例のブロック図、゛第３
図は水量差と湯温偏差の積と供給ガス量比率との特性図
、第４図は湯温偏差とガス比例弁出力の変更間隔を決め
る補正間隔の特性図、第５図は湯温制御を行なうための
プログラムの一実施例のフローチャート、を示す。
ｌ：水量検出器 ＩＡ：水量差測定器 ２：熱交換
器 ３：ガス比例弁 ４：ガスパーナ５：湯温検出
器 ６： 制御ｉ ７：水入口 ８：ガス人
口 ９：湯温検出器ｌＯ：マイクロコンピュータ
１】：湯温偏差と水量差変化の測定ステップ １２：
水位差変化有効測定ステツ′ブ １３：水量差×湯温
偏差より必要熱量を求めるステップ １４：湯温偏差
３ ｄｏｇであるかどうか判定するステップ １５：
積分制御によりガス量を決定するステップ １６：補
正間隔制御ステップ １７：ガス比例弁駆動信号出力
ステップ
特許出願人 松下電器産業株式会社代理人弁理士
阿 部 功７１．ａ給ダ ？、・μ、ｉ！
Ｊ −’、’桧ｌξ叫夜・ 夛”Ｚ””−ブー
ｔ、° イ１「脅Ｉン笈 ／、゛ 津グシ
シ：１ζ７、゛火λＣＪ ／、’ 才”７ＡＯ第
１図
第３図
俸囁４：１ｈ見Ｃ％
第４図Fig. 1 is a gas instantaneous water heater equipped with a controller of the present invention, Fig. 2 is a block diagram of an embodiment of the controller of the present invention, and Fig. 3 is a block diagram of an embodiment of the controller of the present invention.
The figure is a characteristic diagram of the product of water volume difference and hot water temperature deviation and the supply gas rate ratio, Figure 4 is a characteristic diagram of hot water temperature deviation and correction interval that determines the change interval of gas proportional valve output, and Figure 5 is a characteristic diagram of hot water temperature control. 1 shows a flowchart of an embodiment of a program for performing the following. l: Water amount detector IA: Water amount difference measuring device 2: Heat exchanger 3: Gas proportional valve 4: Gas spanner 5: Hot water temperature detector 6: Control i 7: Water inlet 8: Gas population 9: Hot water temperature detector lO: microcomputer
1]: Measurement step of water temperature deviation and water volume difference change 12:
Water level difference change effective measurement step 13: Step of calculating the required amount of heat from the water amount difference x hot water temperature deviation 14: Step of determining whether the hot water temperature deviation is 3 dogs 15:
Step of determining gas amount by integral control 16: Correction interval control step 17: Gas proportional valve drive signal output step Patent applicant Matsushita Electric Industrial Co., Ltd. Agent Patent attorney
Isao Abe 71. A-paid? ,・μ,i!
J -', 'Hinoki lξ cry night, 夛"Z""-Boo
t, ° I1 ``Threat I in 笈 /, ゛ Tsugushishi: 1ζ7, ゛Fire λCJ /, 'Sai'' 7AO Figure 1 Figure 3 Salary Whisper 4: 1h See C% Figure 4
Claims (1)
、湯温と設定湯温の差を測定する湯温偏差測定手段、水
量と基準水量の差を測定する水量差測定手段、水量差が
変化した時変化後の水量差の持続時間を測定し、前記持
続時間がある値より短い時は水量変化を無視し、水量変
化有効判定手段、湯温偏差と水量差により熱エネルギー
供給量を判定する必要熱量判定手段、水量差の変化がな
く、湯温偏差がある値以下の時、熱エネルギー供給量を
積分制御により判定する積分制御手段および湯温偏差の
大きさにより、熱エネルギー供給量の補正動作間隔を可
変する補正間隔制御手段からなる給湯装置。A water temperature detector that detects the water temperature, a water flow detector that detects the water volume, a water temperature deviation measuring means that measures the difference between the water temperature and the set water temperature, a water volume difference measuring means that measures the difference between the water volume and the reference water volume, and the water volume. When the difference changes, the duration of the water volume difference after the change is measured, and if the duration is shorter than a certain value, the water volume change is ignored, and the water volume change validity judgment means determines the amount of thermal energy supplied based on the hot water temperature deviation and the water volume difference. When there is no change in water volume difference and the hot water temperature deviation is below a certain value, integral control means uses integral control to determine the amount of heat energy supplied, and depending on the size of the hot water temperature deviation, thermal energy is supplied. A hot water supply device comprising a correction interval control means for varying the amount of correction operation interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15221086A JPS6314039A (en) | 1986-06-28 | 1986-06-28 | Hot water supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15221086A JPS6314039A (en) | 1986-06-28 | 1986-06-28 | Hot water supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6314039A true JPS6314039A (en) | 1988-01-21 |
Family
ID=15535474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15221086A Pending JPS6314039A (en) | 1986-06-28 | 1986-06-28 | Hot water supply device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6314039A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02120659U (en) * | 1989-03-13 | 1990-09-28 | ||
| JPH0331651A (en) * | 1989-06-28 | 1991-02-12 | Noritz Corp | Instantaneous type kerosene hot water feed device |
-
1986
- 1986-06-28 JP JP15221086A patent/JPS6314039A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02120659U (en) * | 1989-03-13 | 1990-09-28 | ||
| JPH0331651A (en) * | 1989-06-28 | 1991-02-12 | Noritz Corp | Instantaneous type kerosene hot water feed device |
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