JPH0338590Y2 - - Google Patents
Info
- Publication number
- JPH0338590Y2 JPH0338590Y2 JP6402485U JP6402485U JPH0338590Y2 JP H0338590 Y2 JPH0338590 Y2 JP H0338590Y2 JP 6402485 U JP6402485 U JP 6402485U JP 6402485 U JP6402485 U JP 6402485U JP H0338590 Y2 JPH0338590 Y2 JP H0338590Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- hot water
- heat exchanger
- thermistor
- acts
- 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 22
- 238000001514 detection method Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000001052 transient effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Control Of Combustion (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は給湯器等の温度制御装置に関する。[Detailed explanation of the idea] (Industrial application field) The present invention relates to a temperature control device for water heaters, etc.
（従来の技術）
従来のこの種温度制御装置においては、第１図
に示すように、出湯路に配置された出湯温度検知
用サーミスタによつて検出された出湯温度と目標
温度との偏差に対して比例、積分並びに微分演算
し、その演算出力によりガス量を制御して出湯温
度の調節を行なつていた。(Prior art) As shown in Fig. 1, in a conventional temperature control device of this type, the deviation between the outlet temperature detected by the outlet hot water temperature detection thermistor placed in the outlet path and the target temperature is detected. Proportional, integral, and differential calculations were performed, and the output of these calculations was used to control the amount of gas and adjust the temperature of the hot water.
（考案が解決しようとする課題）
しかしながら、この場合、サーミスタが配置さ
れている出湯路は外乱の影響が顕著な流水経路の
下流側に位置することになり、出湯開始時や流量
変化時などの流量安定化前の過渡時には、サーミ
スタの検出遅れが生じて、出湯温度に相当乱調を
来たしていた。(Problem to be solved by the invention) However, in this case, the hot water outlet path where the thermistor is placed is located on the downstream side of the flowing water path where the influence of disturbances is significant, so that During the transient period before the flow rate stabilized, there was a delay in the detection of the thermistor, causing considerable disturbance in the outlet temperature.
そこで、これを是正するために、前記出湯路に
配置されたサーミスタに加えて、過渡時の湯温変
化が急激に起こる部位にもサーミスタを配置し、
外乱が生じても、これに迅速に対応し得るように
することが考えられるが、従来のような比例、積
分並びに微分制御によるものの場合、比例、積
分、微分の各項が偏差に対して作用するため、２
箇所の温度をフイードバツクして制御するのは困
難であつた。 Therefore, in order to correct this, in addition to the thermistor placed in the hot water outlet path, a thermistor is also placed in areas where rapid changes in hot water temperature occur during transient times.
One idea is to be able to quickly respond to disturbances, but in the case of conventional proportional, integral, and differential control, each proportional, integral, and differential term acts on the deviation. In order to do so, 2
It was difficult to feedback and control the temperature at the location.
本考案では、かかる従来の欠点を解消するため
になされ、前記出湯温度の過渡時における安定化
を図ることを目的とする。 The present invention has been made in order to eliminate such conventional drawbacks, and aims to stabilize the tapping temperature during transients.
（課題を解決するための手段）
本考案では、この目的のために過渡時の湯温変
化が急激に起こる部位である熱交換器の途中にひ
とつのサーミスタを配設することにより、外乱が
生じたときのガス量調節の応答性を向上させ、出
湯部に配設した他のサーミスタで設定温度に対応
するガス量の安定化を期すものとし、出湯路に設
けたサーミスタの検出温度と目標温度との偏差に
対して作用する積分出力と、上記サーミスタと熱
交換器途中に設けたサーミスタの検出温度の和に
対して作用する比例微分出力との合成出力にて前
記比例弁を制御する構成としてある。(Means for solving the problem) For this purpose, in the present invention, one thermistor is installed in the middle of the heat exchanger, which is the part where the hot water temperature changes suddenly during transient periods, so that the disturbance is generated. The other thermistors installed in the hot water outlet section aim to stabilize the gas amount corresponding to the set temperature. The proportional valve is controlled by a composite output of an integral output that acts on a deviation between be.
（実施例）
以下、本考案を図面に示す実施例について具体
的に説明する。(Example) Hereinafter, an example of the present invention shown in the drawings will be specifically described.
第２図において、サーミスタ１，２はそれぞれ
給湯器３の熱交換器４の出湯路５と熱交換器４途
中とに配設されている。６はガスバーナ、７は比
例弁、８は制御器である。 In FIG. 2, thermistors 1 and 2 are disposed in a hot water outlet path 5 of a heat exchanger 4 of a water heater 3 and in the middle of the heat exchanger 4, respectively. 6 is a gas burner, 7 is a proportional valve, and 8 is a controller.
第３図はこの実施例の制御部のブロツク線図で
ある。この図に示されるように、偏差に作用する
のは目標温度とサーミスタ１の検出した出湯温度
との偏差に対して作用する積分動作のみで、比例
微分動作は結果即ちサーミスタ１の検出した出湯
温度とサーミスタ２の検出温度との和に対して作
用することになる。このため、第４図に示すよう
に、前記サーミスタ１，２によつて検知された両
温度を合算した温度値に対しても比例動作および
微分動作はともに有効に作用する。また、サーミ
スタ２は外乱に対しても即応性を有するため、そ
の点を考慮した制御も外乱に対して十分な即応性
をもつて動作することになる。 FIG. 3 is a block diagram of the control section of this embodiment. As shown in this figure, only the integral operation that acts on the deviation between the target temperature and the hot water temperature detected by thermistor 1 acts on the deviation, and the proportional differential operation acts on the deviation, that is, the hot water temperature detected by thermistor 1. and the temperature detected by the thermistor 2. Therefore, as shown in FIG. 4, both the proportional operation and the differential operation effectively act on the temperature value that is the sum of both temperatures detected by the thermistors 1 and 2. Further, since the thermistor 2 has a quick response to disturbances, control that takes this point into consideration also operates with sufficient quick response to disturbances.
即ち、設定温度で平衡している状態から流量が
絞られた条件を考えると、かかる流量変化時には
遅れを持つて出湯温度が上昇し、従来例ではこの
上昇した出湯温度と設定温度との偏差に対して作
用するものである為、上記遅れ時間並びに偏差に
基づき出力する点とから出湯温度変化に即応でき
ない。対して本案では、上記出湯温度上昇時には
積分出力を、出湯温度と熱交換器途中の遅れの少
ない検出温度との和に対する演算出力で減算した
出力で比例弁を制御することになるので、出湯温
度変化に即応できるのである。 In other words, if we consider a condition in which the flow rate is reduced from a state where it is in equilibrium at the set temperature, the outlet temperature will rise with a delay when the flow rate changes, and in the conventional example, the deviation between this increased outlet temperature and the set temperature will be Since the output is based on the delay time and the deviation, it is not possible to respond immediately to changes in the outlet temperature. On the other hand, in this proposal, when the hot water temperature rises, the proportional valve is controlled by the output obtained by subtracting the integral output by the calculation output for the sum of the hot water temperature and the detected temperature with little delay during the heat exchanger. They can quickly respond to changes.
（考案の効果）
このように、本考案によれば給湯器等の流量変
化時あるいは再出湯時のオーバーシユートを抑制
して出湯温度の安定化を図ることができる。(Effects of the Invention) As described above, according to the present invention, overshoot can be suppressed when the flow rate of a water heater or the like changes or when hot water is re-discharged, thereby stabilizing the temperature of the discharged hot water.
第１図は従来の比例、積分並びに微分制御を示
すブロツク線図、第２図は本考案の一実施例を示
す全体構成図、第３図は本考案に係わる制御部の
ブロツク線図、第４図は説明図である。
１……サーミスタ、２……サーミスタ、４……
熱交換器、５……出湯路、６……ガスバーナ、７
……比例弁。
Fig. 1 is a block diagram showing conventional proportional, integral, and differential control; Fig. 2 is an overall configuration diagram showing an embodiment of the present invention; Fig. 3 is a block diagram of the control section according to the present invention; FIG. 4 is an explanatory diagram. 1...Thermistor, 2...Thermistor, 4...
Heat exchanger, 5... Hot water outlet path, 6... Gas burner, 7
...proportional valve.
Claims (1)
ナと、ガスバーナへの供給ガス量を可変する比例
弁と、出湯路と熱交換器途中に設けたサーミスタ
と、当該出湯路に設けたサーミスタの検出温度と
目標温度との偏差に対して作用する積分出力と、
上記両サーミスタの検出温度の和に対して作用す
る比例微分出力との合成出力にて前記比例弁を制
御する給湯器等の温度制御装置。 Detection of a heat exchanger, a gas burner that heats the heat exchanger, a proportional valve that changes the amount of gas supplied to the gas burner, a thermistor installed between the hot water outlet path and the heat exchanger, and a thermistor installed in the hot water outlet path. an integral output that acts on the deviation between the temperature and the target temperature;
A temperature control device for a water heater or the like that controls the proportional valve using a composite output of a proportional differential output that acts on the sum of the temperatures detected by both the thermistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6402485U JPH0338590Y2 (en) | 1985-04-26 | 1985-04-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6402485U JPH0338590Y2 (en) | 1985-04-26 | 1985-04-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61181246U JPS61181246U (en) | 1986-11-12 |
| JPH0338590Y2 true JPH0338590Y2 (en) | 1991-08-14 |
Family
ID=30594714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6402485U Expired JPH0338590Y2 (en) | 1985-04-26 | 1985-04-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0338590Y2 (en) |
-
1985
- 1985-04-26 JP JP6402485U patent/JPH0338590Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61181246U (en) | 1986-11-12 |
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