JPS6235573B2 - - Google Patents
Info
- Publication number
- JPS6235573B2 JPS6235573B2 JP57042036A JP4203682A JPS6235573B2 JP S6235573 B2 JPS6235573 B2 JP S6235573B2 JP 57042036 A JP57042036 A JP 57042036A JP 4203682 A JP4203682 A JP 4203682A JP S6235573 B2 JPS6235573 B2 JP S6235573B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- amount
- temperature
- water heater
- water supply
- 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 75
- 238000002485 combustion reaction Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
- F23N1/082—Regulating fuel supply conjointly with another medium, e.g. boiler water using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/12—Integration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/18—Measuring temperature feedwater temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
Description
【発明の詳細な説明】
本発明はガス・石油・電気等を熱源とする給湯
機の温度制御に関わり、給湯口での通水停止に伴
う熱量供給停止後、所定時間内に再度給湯を開始
したとき所定の熱量供給値から制御することによ
り、目標とする湯温への収束時間の短縮を図ると
共に、設定値からの湯温偏差を極力制御する制御
装置の提供を目的とする。[Detailed Description of the Invention] The present invention relates to temperature control of water heaters that use gas, oil, electricity, etc. as heat sources, and starts hot water supply again within a predetermined time after the supply of heat is stopped due to water flow stopping at the hot water supply inlet. It is an object of the present invention to provide a control device that shortens the convergence time to a target hot water temperature and controls the hot water temperature deviation from the set value as much as possible by controlling from a predetermined heat supply value when the hot water temperature is set.
ここでは、ガスを燃料とするガス瞬間式給湯機
を例に挙げ、本発明の効果を説明する。 Here, the effects of the present invention will be explained using an example of a gas instantaneous water heater that uses gas as fuel.
第１図で、給湯機の構成を示す。ガスバーナ１
での燃焼熱は熱交換器２で水と置換され、湯とな
つて供給される。温度制御器３では、出湯温度検
知器４からの信号TW２と、温度設定器５から
の信号WTRとを入力し、その温度偏差TER＝
TWR−TW２から所定の燃焼量を決定し、供
給熱量制御器６を制御して出湯温度コントロール
を実施している。一般に、出湯温度検知器として
はサーミスタや熱電対が、また、湯温制御アルゴ
リズムには比例・積分・微分制御（PiD方式）や
その組み合わせが用いられている。７は給湯口を
示す。 FIG. 1 shows the configuration of the water heater. gas burner 1
The combustion heat is replaced with water in the heat exchanger 2 and supplied as hot water. The temperature controller 3 inputs the signal TW 2 from the hot water temperature detector 4 and the signal WTR from the temperature setting device 5, and calculates the temperature deviation TER=
A predetermined combustion amount is determined from the TWR-TW 2 , and the supply heat amount controller 6 is controlled to control the hot water temperature. Generally, a thermistor or thermocouple is used as the hot water temperature detector, and proportional, integral, and differential control (PiD method) or a combination thereof is used as the hot water temperature control algorithm. 7 indicates a hot water supply port.
第２図では、第１図の湯温制御システムをブロ
ツク化して表わしている。８はコントローラのゲ
イン（PiD方式による演算制御等）、９はプロセ
スである熱交換器を主体としたゲイン、１０は出
湯温度検知器の応答とゲインを示すブロツクであ
り、湯温偏差TERを入力したコントローラが出
力TC（燃焼量に相当する）をプロセスに与え、
その結果湯温がTWとして表われる。TW２
は、出湯温度検知器４を介して入力される出湯温
度であり、TWに対して応答遅れの要素を含ん
でいる。 In FIG. 2, the hot water temperature control system of FIG. 1 is shown in blocks. 8 is the gain of the controller (arithmetic control using PiD method, etc.), 9 is the gain mainly for the process heat exchanger, and 10 is the block that indicates the response and gain of the hot water temperature detector, and the hot water temperature deviation TER is input. The controller gives an output TC (corresponding to the amount of combustion) to the process,
As a result, the water temperature is expressed as TW. TW 2
is the outlet hot water temperature input via the outlet hot water temperature detector 4, and includes an element of response delay with respect to TW.
第４図は、従来の温度制御器での出湯温度特性
を示している。ａは出湯温度、ｂは給水量、ｃは
コントローラ出力及び積分項の時間特性である。
ｔ＜t1まで定常状態の燃焼を続行し、その時の給
水量はW1、コントローラ出力はTC１である。温
度の定常的偏差が残らないPiD方式では、定常状
態におけるコントローラ出力は積分項の値に等し
い。つまり、積分量が、負荷とのバランス点であ
る。ｔ＝t1で給湯を停止すれば、瞬間式給湯機で
は直ちに燃焼を停止し、余分な燃焼は行わない。
つまり、コントローラ出力TCは零となる。ｔ＝
t2で給湯口から再び通水を開始すると、出湯温度
TWには給湯機内に溜つていた機器本体の熱容
量で加熱された分が初めに現われ（ＴOV1）、その
後、燃焼制御に従つて水温から熱められた湯が現
われる。ＴDW1は、アンダーシユートであり制御
出力に大きく左右される。ｃのVTiは、コントロ
ーラ内の積分量を示し、このVTiを含んだPiD方
式での出力がTCとなつている。従来方式では、
再着火時は給湯機使用開始時と同様の制御を実施
するので、積分項は零から演算スタートしてい
る。電子回路ではコンデンサーへの充放電が積分
量に相当している。このため、図ａのように大き
なアンダーシユートＴDW1が生じ、頻ばんに給湯
口を開閉して給湯機を利用する際には問題となつ
ている。 FIG. 4 shows the outlet temperature characteristics of a conventional temperature controller. a is the hot water temperature, b is the water supply amount, and c is the time characteristic of the controller output and the integral term.
Steady state combustion continues until t<t 1 , at which time the water supply amount is W 1 and the controller output is TC1. In the PiD method, where no steady temperature deviation remains, the controller output in the steady state is equal to the value of the integral term. In other words, the integral amount is the balance point with the load. If hot water supply is stopped at t= t1 , instantaneous water heaters will immediately stop combustion and no additional combustion will occur.
In other words, the controller output TC becomes zero. t=
When water starts flowing again from the hot water supply port at t 2 , the hot water temperature
In TW, the amount of water heated by the heat capacity of the equipment that has accumulated in the water heater first appears (T OV1 ), and then hot water that has been heated from the water temperature according to combustion control appears. T DW1 is an undershoot and is greatly influenced by the control output. VTi in c indicates the amount of integration within the controller, and the output in the PiD method that includes this VTi is TC. In the conventional method,
At the time of re-ignition, the same control as when starting to use the water heater is performed, so the calculation of the integral term starts from zero. In electronic circuits, charging and discharging a capacitor corresponds to an integral amount. For this reason, a large undershoot T DW1 occurs as shown in Figure a, which is a problem when using the water heater by frequently opening and closing the hot water supply opening.
このようなアンダーシユートを極力抑制し、質
の良い湯を供給するのが、本発明の目的である。 It is an object of the present invention to suppress such undershoot as much as possible and supply high quality hot water.
第３図で、本発明の湯温制御を説明する。ａ，
ｂ，ｃはそれぞれ出湯温度、給水量、コントロー
ラ出力の時間特性であり、第４図と同様、ｔ＝t1
で通水停止し、ｔ＝t2で、給湯を再開するモード
を表わしている。再着火後のオーバーシユートＴ
OV2は、給湯機の熱容量と設定温度、及び、給水
量に依存するもので、従来の方式と差はない。と
ころが、ｃで示すようにt2時点で積分量をVTi2に
セツトし燃焼制御を開始すれば、ａで示すように
アンダシユートＴDW2を大幅に抑制することがで
きる。つまり、給湯口の開閉を頻ばんに行うよう
な使い方の場合には、通水停止後の所定時間内で
の再着火時には所定の積分値VTi2から燃焼制御
を再開することにより、目標値への収束時間を大
幅に短縮することができる。 With reference to FIG. 3, the hot water temperature control of the present invention will be explained. a,
b and c are the time characteristics of the hot water temperature, water supply amount, and controller output, respectively, and as in Fig. 4, t = t 1
This represents a mode in which water flow is stopped at t = t 2 and hot water supply is restarted at t = t 2 . Overshoot T after re-ignition
OV2 depends on the heat capacity and temperature setting of the water heater, as well as the amount of water supplied, and is no different from conventional methods. However, if the integral amount is set to VTi 2 at time t 2 and combustion control is started, as shown by c, the undershoot T DW2 can be significantly suppressed, as shown by a. In other words, if the hot water supply port is frequently opened and closed, if the water is re-ignited within a predetermined time after the water flow has stopped, combustion control will be restarted from the predetermined integral value VTi 2 to reach the target value. The convergence time can be significantly reduced.
この所定の積分値VTi2は、燃焼停止直前の積
分量とすれば、同一水量で再給湯時にはアンダー
シユートの抑制、及び、整定時間の短縮にさらに
効果がある。 If this predetermined integral value VTi 2 is the integral value immediately before combustion stops, it will be more effective in suppressing undershoot and shortening the settling time when refilling hot water with the same amount of water.
以上説明したように、本発明の給湯機制御装置
によれば、再着火に問題となつていたアンダーシ
ユートを極端に小さくすることができ、整定時間
の短縮も図れ、大幅な湯質の向上が得られる。 As explained above, according to the water heater control device of the present invention, undershoot, which has been a problem with re-ignition, can be extremely reduced, the settling time can be shortened, and hot water quality can be significantly improved. is obtained.
この説明では、通水停止後は燃焼を止める例を
示したが、再着火時の点火シーケンスを早める意
味からのパイロツトバーナ残しモードにおいても
本発明の効果は十分にある。 In this explanation, an example has been shown in which combustion is stopped after the water flow is stopped, but the present invention is also fully effective in the pilot burner leaving mode for the purpose of hastening the ignition sequence at the time of re-ignition.
第１図はガス瞬間式給湯機の構成図、第２図は
温度制御のブロツク構成図、第３図ａ，ｂ，ｃは
本発明の一実施例の給湯機の制御装置の給湯温度
特性図、給湯量特性図、コントローラ出力特性
図、第４図ａ，ｂ，ｃは従来の給湯機制御装置の
出湯温度特性図、給湯量特性図、コントローラ出
力特性図である。
３……温度制御器、４……出湯温度検出器、５
……温度設定器、６……供給熱量制御器、VTi2
……所定積分量。
Fig. 1 is a block diagram of a gas instantaneous water heater, Fig. 2 is a block diagram of temperature control, and Figs. 3 a, b, and c are hot water supply temperature characteristic diagrams of a control device for a water heater according to an embodiment of the present invention. , hot water supply amount characteristic diagram, controller output characteristic diagram. FIGS. 4a, b, and c are hot water supply temperature characteristic diagram, hot water supply amount characteristic diagram, and controller output characteristic diagram of a conventional water heater control device. 3... Temperature controller, 4... Hot water temperature detector, 5
... Temperature setting device, 6 ... Heat supply controller, VTi 2
...predetermined integral amount.
Claims (1)
前記温度設定器の信号と前記出湯温度検出器の信
号の差に依存して給湯機供給熱量を制御する信号
を出力する温度制御器と、前記温度制御器出力に
応動する給湯機供給熱量制御器を有し、給湯停止
に伴う熱量供給停止後給湯機内に溜つていた供給
水量が機器本体の熱容量で加熱されたオーバーシ
ユートとして現われる時間内での給湯再開時には
前記給湯停止直前の定値から供給熱量制御する給
湯機制御装置。 ２ 給湯再開時、所定積分量から積分動作を開始
する特許請求の範囲第１項記載の給湯機制御装
置。[Claims] 1. A hot water outlet temperature detector of a water heater, a temperature setting device,
a temperature controller that outputs a signal for controlling the amount of heat supplied by the water heater depending on the difference between the signal from the temperature setting device and the signal from the hot water temperature detector; and a controller for the amount of heat supplied from the water heater in response to the output of the temperature controller. When hot water supply is resumed within the time period during which the amount of water accumulated in the water heater appears as an overshoot when the heat capacity of the equipment is heated after the heat supply is stopped due to the hot water supply stop, the water supply is resumed from the fixed value immediately before the hot water supply stop. A water heater control device that controls the amount of heat. 2. The water heater control device according to claim 1, which starts the integral operation from a predetermined integral amount when hot water supply is restarted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57042036A JPS58158445A (en) | 1982-03-16 | 1982-03-16 | Controller for hot water supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57042036A JPS58158445A (en) | 1982-03-16 | 1982-03-16 | Controller for hot water supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58158445A JPS58158445A (en) | 1983-09-20 |
| JPS6235573B2 true JPS6235573B2 (en) | 1987-08-03 |
Family
ID=12624923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57042036A Granted JPS58158445A (en) | 1982-03-16 | 1982-03-16 | Controller for hot water supply device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58158445A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01112773U (en) * | 1987-09-03 | 1989-07-28 | ||
| JPH0370515A (en) * | 1989-08-10 | 1991-03-26 | Rofutee Kk | Loofa pillow |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58160759A (en) * | 1982-03-17 | 1983-09-24 | Matsushita Electric Ind Co Ltd | Apparatus for controlling hot water supplying apparatus |
| JPS58146017U (en) * | 1982-03-26 | 1983-10-01 | 日産自動車株式会社 | Porous resonance silencer |
| FR2621382B1 (en) * | 1987-10-05 | 1990-01-19 | Sdecc | GAS BOILER CONTROL DEVICE |
| CN105157236B (en) * | 2015-07-22 | 2018-10-09 | 珠海格力电器股份有限公司 | Water heater backwater control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5096952A (en) * | 1973-12-27 | 1975-08-01 | ||
| JPS56108105A (en) * | 1980-12-22 | 1981-08-27 | Matsushita Electric Ind Co Ltd | Automatic control circuit |
| JPS56124829A (en) * | 1980-03-04 | 1981-09-30 | Sanyo Electric Co Ltd | Combustion control device |
-
1982
- 1982-03-16 JP JP57042036A patent/JPS58158445A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5096952A (en) * | 1973-12-27 | 1975-08-01 | ||
| JPS56124829A (en) * | 1980-03-04 | 1981-09-30 | Sanyo Electric Co Ltd | Combustion control device |
| JPS56108105A (en) * | 1980-12-22 | 1981-08-27 | Matsushita Electric Ind Co Ltd | Automatic control circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01112773U (en) * | 1987-09-03 | 1989-07-28 | ||
| JPH0370515A (en) * | 1989-08-10 | 1991-03-26 | Rofutee Kk | Loofa pillow |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58158445A (en) | 1983-09-20 |
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