JPH0368117B2 - - Google Patents
Info
- Publication number
- JPH0368117B2 JPH0368117B2 JP60267821A JP26782185A JPH0368117B2 JP H0368117 B2 JPH0368117 B2 JP H0368117B2 JP 60267821 A JP60267821 A JP 60267821A JP 26782185 A JP26782185 A JP 26782185A JP H0368117 B2 JPH0368117 B2 JP H0368117B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- potential
- corrosion
- storage tank
- water storage
- 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 - Lifetime
Links
Landscapes
- Prevention Of Electric Corrosion (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、貯湯タンク内の残湯状態に対応し
た適正な防食電位が得られるように自動的に外部
電源の電圧制御を行うようにした温水器の防所装
置に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention automatically controls the voltage of an external power supply so that an appropriate anticorrosion potential corresponding to the state of hot water remaining in a hot water storage tank is obtained. This relates to a protective device for a water heater.
従来の温水器に使用されている外部電源防食装
置は、ほとんどが第４図に示すように、外部電源
の正極端子VSSに抵抗１を介して防食電極２を接
続し、負極端子Ｖに貯湯タンク３を接続して、防
食電極２と貯湯タンク３間に電位差を与え、防食
電位を得る方法であつた。
Most of the external power corrosion protection devices used in conventional water heaters connect the corrosion protection electrode 2 to the positive terminal V SS of the external power supply via a resistor 1, and connect the hot water storage to the negative terminal V, as shown in Figure 4. The method was to connect the tank 3 and apply a potential difference between the corrosion protection electrode 2 and the hot water storage tank 3 to obtain a corrosion protection potential.
従来の防食装置は以上のように構成されている
ので、貯湯タンク３内の液体が低温の場合、高温
の場合あるいは低温と高温の２層からなる場合等
では、それぞれ防食電極２と貯湯タンク３間の電
位差が変化し、各状態に応じた必要な適正電位が
得られないという問題点があつた。
Since the conventional corrosion protection device is configured as described above, when the liquid in the hot water storage tank 3 is low temperature, high temperature, or consists of two layers of low temperature and high temperature, the corrosion protection electrode 2 and the hot water storage tank 3 are connected to each other. There was a problem in that the potential difference between them changed, making it impossible to obtain the necessary appropriate potential depending on each state.
この発明は上記のような問題点を解消するため
になされたもので、残湯状態に応じた適正な防食
電位が得られる温水器の防食装置を得ることを目
的とする。 This invention was made to solve the above-mentioned problems, and an object of the present invention is to provide a corrosion protection device for a water heater that can obtain an appropriate corrosion protection potential depending on the state of remaining hot water.
この発明に係わる温水器の防食装置は、貯湯タ
ンクの壁面に装着された残湯センサと、この残湯
センサの出力に基づき残湯量と残湯温度を測定す
る残湯状態測定手段と、この残湯状態測定手段の
出力に基づき貯湯タンクの理想的防食電位を決定
する適正電位決定手段と、前記貯湯タンクの適所
に装着された防食電極と、この防食電極と前記貯
湯タンク間に電位差を付与する電源と、前記防食
電極と貯湯タンク間の電位を測定する防食電位測
定手段、この防食電位測定手段で測定した電位と
前記適正電位決定手段で決定した理想的防食電位
を比較して、前記貯湯タンクが適正な防食電位か
どうかを判定する判定手段と、この判定手段から
の判定出力に基づき前記電源電圧を制御する電源
電圧制御手段とを設けたものである。
The corrosion protection device for a water heater according to the present invention includes a residual hot water sensor attached to the wall of a hot water storage tank, a residual hot water condition measuring means for measuring the amount of residual hot water and the temperature of the residual hot water based on the output of the residual hot water sensor, and Appropriate potential determination means for determining an ideal anti-corrosion potential of the hot water storage tank based on the output of the hot water condition measuring means; an anti-corrosion electrode attached to a suitable position on the hot water storage tank; and applying a potential difference between the anti-corrosion electrode and the hot water storage tank. a power source, a corrosion protection potential measuring means for measuring the potential between the corrosion protection electrode and the hot water storage tank; a potential measured by the corrosion protection potential measurement means and the ideal corrosion protection potential determined by the appropriate potential determination means; The present invention is provided with a determination means for determining whether or not the potential is an appropriate corrosion protection potential, and a power supply voltage control means for controlling the power supply voltage based on the determination output from the determination means.
この発明においては、貯湯タンク内の残湯量と
残湯温度を残湯状態測定手段が測定し、その状態
に応じた適正な防食電位を事前に測定しておいた
理想的防食電位から決定し、電源電圧制御手段が
適正な防食電位になるように制御する。
In this invention, the residual hot water state measuring means measures the amount of remaining hot water and the temperature of the remaining hot water in the hot water storage tank, and determines an appropriate anticorrosive potential according to the state from an ideal anticorrosive potential measured in advance, The power supply voltage control means controls the corrosion protection potential to be appropriate.
以下、この発明による温水器の防食装置を説明
する。
Hereinafter, a corrosion prevention device for a water heater according to the present invention will be explained.
第１図はこの説明による温水器の防食装置の一
実施例の全体構成図で、５は正極電源VSS４の電
圧を制御するための電源電圧制御手段、６は防食
電極２と貯湯タンク３間の実際の電位差を測定す
る防食電位測定手段、７ａ〜７ｎは貯湯タンク３
の外壁面に取り付けられた残湯センサであり、そ
の検出信号は残湯状態測定手段８に入力されて残
湯量と残湯温度が測定される。 FIG. 1 is an overall configuration diagram of an embodiment of the corrosion protection device for a water heater according to this explanation, in which 5 is a power supply voltage control means for controlling the voltage of the positive electrode power supply V SS 4, and 6 is a corrosion protection electrode 2 and a hot water storage tank 3. 7a to 7n are hot water storage tanks 3;
This is a residual hot water sensor attached to the outer wall surface of the hot water tank, and its detection signal is input to the residual hot water condition measuring means 8 to measure the amount of residual hot water and the temperature of the residual hot water.
９はその残湯状態に応じた理想的防食電位を決
定する適正電位決定手段９，１０は判定手段で、
理想的防食電位と実際の電位とを比較して適正か
否かを判定するもので、その判定結果に基づいて
前記電源電圧制御手段５が電源電圧を制御するよ
うに構成されている。 9 is appropriate potential determining means 9 and 10 is determining means for determining an ideal anticorrosion potential according to the state of the remaining hot water;
The ideal anti-corrosion potential is compared with the actual potential to determine whether it is appropriate or not, and the power supply voltage control means 5 is configured to control the power supply voltage based on the determination result.
第２図は第１図の実施例の電気接続を示す回路
図である。 FIG. 2 is a circuit diagram showing the electrical connections of the embodiment of FIG. 1.
図中、１１は制御回路内のマイクロコンピユー
タであり、CPU１２、メモリ１３、入力回路１
４、出力回路１５を有している。電圧制御は、出
力回路１５の出力をアナログ値に変換するＤ／Ａ
変換器１６により行われる。 In the figure, 11 is a microcomputer in the control circuit, including a CPU 12, a memory 13, and an input circuit 1.
4. It has an output circuit 15. Voltage control is performed by a D/A that converts the output of the output circuit 15 into an analog value.
This is done by a converter 16.
１７は防食電極２と貯湯タンク３間の電圧信号
と、残湯センサ７ａ〜７ｎの電圧信号が入力され
るアナログマルチプレクサ、１８はその出力をデ
ジタル値に変換するＡ／Ｄ変換器であり、その出
力はマイクロコンピユータ１１の入力回路１４に
入力される。 17 is an analog multiplexer into which the voltage signal between the anticorrosive electrode 2 and the hot water storage tank 3 and the voltage signals from the remaining hot water sensors 7a to 7n are input; 18 is an A/D converter that converts the output into a digital value; The output is input to the input circuit 14 of the microcomputer 11.
次に上記実施例の動作を第３図を参照しながら
説明する。 Next, the operation of the above embodiment will be explained with reference to FIG.
第３図はマイクロコンピユータ１１のメモリ１
３に記憶された防食装置の制御フローチヤートで
ある。 Figure 3 shows memory 1 of microcomputer 11.
3 is a control flowchart of the corrosion protection device stored in FIG.
まず、電源を入れると同時に第３図に示すステ
ツプ１９の残湯量、残湯温度測定がスタートす
る。次のステツプ２０では既にメモリ１３に記憶
してある残湯状態に応じた理想的適正電位から、
ステツプ１９で測定した残湯状態に応じた適正電
位の上限値Ｖと下限値Ｖを理想適正電位として決
定する。 First, as soon as the power is turned on, measurement of the amount of remaining hot water and the temperature of the remaining hot water starts in step 19 shown in FIG. In the next step 20, from the ideal appropriate potential according to the remaining hot water state already stored in the memory 13,
The upper limit value V and the lower limit value V of the appropriate potential corresponding to the state of remaining hot water measured in step 19 are determined as the ideal appropriate potential.
次に、ステツプ２１では実際の防食電位Ｖを防
食電位測定手段６で測定する。そしてこの電位Ｖ
が適正値であるか否かをステツプ２２，２３で比
較判定し、その判定結果がＶ＜Ｖ＜Ｖなら電源電
圧はそのまま維持し、それ以外ならステツプ２４
で出力回路１５から制御信号が出力され、電源電
圧制御手段５によつて防食電極と１２と貯湯タン
ク３間の電位が制御される。 Next, in step 21, the actual anti-corrosion potential V is measured by the anti-corrosion potential measuring means 6. And this potential V
It is compared and determined in steps 22 and 23 whether or not the value is an appropriate value, and if the determination result is V<V<V, the power supply voltage is maintained as it is; otherwise, it is determined in step 24.
A control signal is outputted from the output circuit 15, and the electric potential between the anticorrosion electrode 12 and the hot water storage tank 3 is controlled by the power supply voltage control means 5.
その結果、防食電極２と貯湯タンク３間の防食
電位は変化することになり、再度、ステツプ２１
の防食電位測定から繰り返すことによりＶ＜Ｖと
なる適正値に防食電圧が制御される。 As a result, the anti-corrosion potential between the anti-corrosion electrode 2 and the hot water storage tank 3 changes, and step 21 is performed again.
By repeating the measurement of the corrosion protection potential, the corrosion protection voltage is controlled to an appropriate value such that V<V.
以上のようにこの説明によれば、貯湯タンクと
防食電極間の電位を測定し、その電位が残湯状態
に応じた適正な防食電位の範囲内にあるかどうか
を判定し、その判定結果に基づいて防食電極と貯
湯タンク間の電位差が常に適正値になるよう構成
したので、貯湯タンク内の残湯状態に影響され
ず、貯湯タンクの防食を確実にすることができ
る。
According to this explanation, the potential between the hot water storage tank and the anti-corrosion electrode is measured, it is determined whether the potential is within the range of the appropriate anti-corrosion potential according to the state of the remaining hot water, and the result of the determination is Based on this structure, the potential difference between the corrosion protection electrode and the hot water storage tank is always at an appropriate value, so that the hot water storage tank can be reliably protected from corrosion without being affected by the state of remaining hot water in the hot water storage tank.
第１図はこの発明の一実施例を示す全体構成
図、第２図はその電気接続を示す回路図、第３図
は動作を示す制御フローチヤート図、第４図は従
来の温水器の防食装置を示す全体構成図である。
図中、２は防食電極、３は貯湯タンク、５は電
源電圧制御手段、６は防食電位測定手段、７ａ〜
７ｎは残湯センサ、８は残湯状態測定手段、９は
適正電位決定手段、１０は判定手段、１１はマイ
クロコンピユータである。
Fig. 1 is an overall configuration diagram showing one embodiment of the present invention, Fig. 2 is a circuit diagram showing its electrical connections, Fig. 3 is a control flowchart showing its operation, and Fig. 4 is a conventional water heater corrosion protection. FIG. 1 is an overall configuration diagram showing the device. In the figure, 2 is an anti-corrosion electrode, 3 is a hot water storage tank, 5 is a power supply voltage control means, 6 is an anti-corrosion potential measuring means, 7a-
7n is a remaining hot water sensor, 8 is a remaining hot water condition measuring means, 9 is an appropriate potential determining means, 10 is a determining means, and 11 is a microcomputer.
Claims (1)
面適所に装着された残湯センサと、この残湯セン
サの出力に基づき残湯量と残湯温度を測定する残
湯状態測定手段と、この残湯状態測定手段の出力
に基づき貯湯タンクの理想的防食電位を決定する
適正電位決定手段と、前記貯湯タンクの適所に装
着された防食電極と、この防食電極と前記貯湯タ
ンク間に電位差を付与する電源と、前記防食電極
と貯湯タンク間の電位を測定する防食電位測定手
段と、この防食電位測定手段で測定した電位と前
記適正電位決定手段で決定した理想的防食電位と
を比較して、前記貯湯タンクが適正な防食電位が
どうかを判定する判定手段と、この判定手段によ
つて判定された出力に基づき前記電源電圧を制御
する電源電圧制御手段を備えた温水器の防食装
置。 ２ 上記適正電位決定手段及び判定手段がマイク
ロコンピユータで実現されている特許請求の範囲
第１項記載の温水器の防食装置。[Scope of Claims] 1. A metal hot water storage tank, a residual hot water sensor attached to an appropriate position on the wall of the hot water storage tank, and residual hot water status measurement for measuring the amount of residual hot water and the temperature of the residual hot water based on the output of the residual hot water sensor. means, appropriate potential determining means for determining an ideal anti-corrosion potential of the hot water storage tank based on the output of the residual hot water state measuring means, an anti-corrosion electrode attached to an appropriate position of the hot water storage tank, and a gap between the anti-corrosion electrode and the hot water storage tank. a power source for applying a potential difference to the corrosion-protecting potential, a corrosion-proofing potential measuring means for measuring the potential between the corrosion-proofing electrode and the hot water storage tank, and a potential measured by the corrosion-proofing potential measuring means and an ideal corrosion-proofing potential determined by the appropriate potential determining means. Corrosion protection for a water heater, comprising a determination means for determining whether the hot water storage tank has an appropriate corrosion protection potential by comparison, and a power supply voltage control means for controlling the power supply voltage based on the output determined by the determination means. Device. 2. The corrosion protection device for a water heater according to claim 1, wherein the appropriate potential determining means and determining means are realized by a microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60267821A JPS62127481A (en) | 1985-11-28 | 1985-11-28 | Corrosion prevention apparatus of calorifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60267821A JPS62127481A (en) | 1985-11-28 | 1985-11-28 | Corrosion prevention apparatus of calorifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62127481A JPS62127481A (en) | 1987-06-09 |
| JPH0368117B2 true JPH0368117B2 (en) | 1991-10-25 |
Family
ID=17450072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60267821A Granted JPS62127481A (en) | 1985-11-28 | 1985-11-28 | Corrosion prevention apparatus of calorifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62127481A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4880341B2 (en) * | 2006-03-30 | 2012-02-22 | 京セラ株式会社 | Solid oxide fuel cell system |
-
1985
- 1985-11-28 JP JP60267821A patent/JPS62127481A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62127481A (en) | 1987-06-09 |
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