JPH0322552B2 - - Google Patents

Info

Publication number
JPH0322552B2
JPH0322552B2 JP20880884A JP20880884A JPH0322552B2 JP H0322552 B2 JPH0322552 B2 JP H0322552B2 JP 20880884 A JP20880884 A JP 20880884A JP 20880884 A JP20880884 A JP 20880884A JP H0322552 B2 JPH0322552 B2 JP H0322552B2
Authority
JP
Japan
Prior art keywords
hot water
temperature
boiling
heating element
energization
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
Application number
JP20880884A
Other languages
Japanese (ja)
Other versions
JPS6186531A (en
Inventor
Yoshikazu Ito
Hideji Kubota
Kazuo Hara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP59208808A priority Critical patent/JPS6186531A/en
Publication of JPS6186531A publication Critical patent/JPS6186531A/en
Publication of JPH0322552B2 publication Critical patent/JPH0322552B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices
    • F24H9/2007Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2021Storage heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/10Control of fluid heaters characterised by the purpose of the control
    • F24H15/144Measuring or calculating energy consumption
    • F24H15/148Assessing the current energy consumption
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/10Control of fluid heaters characterised by the purpose of the control
    • F24H15/16Reducing cost using the price of energy, e.g. choosing or switching between different energy sources
    • F24H15/164Reducing cost using the price of energy, e.g. choosing or switching between different energy sources where the price of the electric supply changes with time
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/20Control of fluid heaters characterised by control inputs
    • F24H15/212Temperature of the water
    • F24H15/223Temperature of the water in the water storage tank
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/20Control of fluid heaters characterised by control inputs
    • F24H15/238Flow rate
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/30Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355Control of heat-generating means in heaters
    • F24H15/37Control of heat-generating means in heaters of electric heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/40Control of fluid heaters characterised by the type of controllers
    • F24H15/414Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Fluid Mechanics (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は深夜電力を利用する電気温水器の制御
装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control device for an electric water heater that uses late-night electricity.

〔従来の技術〕[Conventional technology]

従来のこの種の電気温水器は第4図に示すよう
な構成であつた。
A conventional electric water heater of this type had a configuration as shown in FIG.

図において、1は貯湯タンクであり、その下部
には発熱体2が装着されている。
In the figure, 1 is a hot water storage tank, and a heating element 2 is attached to the lower part of the tank.

3は沸き上がり温度を制御するためのサーモス
タツトであり、貯湯タンク1の下部外壁面に取り
付けられている。
3 is a thermostat for controlling the boiling temperature, and is attached to the lower outer wall surface of the hot water storage tank 1.

4は貯湯タンク1内で沸き上がつた湯を取り出
す蛇口で、この蛇口4を開口すると、給水管5に
連なる水源からの圧力を受けて貯湯タンク1内の
湯が供給される。
Reference numeral 4 denotes a faucet for taking out hot water that has boiled up in the hot water storage tank 1. When the faucet 4 is opened, hot water in the hot water storage tank 1 is supplied under pressure from a water source connected to a water supply pipe 5.

第5図は従来例の電気回路図を示すもので、6
は電源、7は深夜電力供給時間を設定するための
タイムスイツチである。
Figure 5 shows the electrical circuit diagram of the conventional example.
7 is a power supply, and 7 is a time switch for setting the midnight power supply time.

次に上記構成の作用を説明すると、発熱体2は
深夜電力供給時間帯の8時間のうちに、約8℃の
水から沸き上げ目標温度である85℃に沸き上がる
ように発熱体容量が設定されている。
Next, to explain the operation of the above configuration, the heating element capacity is set so that the heating element 2 boils water from approximately 8°C to the target temperature of 85°C within 8 hours during the late-night power supply period. ing.

また常閉の接点を有するサーモスタツト3は、
貯湯タンク1内の水が85℃になると接点を開成し
て発熱体2への通電を停止するよう構成されてお
り、貯湯タンク1内には毎朝85℃の湯が満たされ
ている。
In addition, the thermostat 3 having a normally closed contact point is
When the water in the hot water storage tank 1 reaches 85°C, a contact is opened to stop energizing the heating element 2, and the hot water storage tank 1 is filled with hot water at 85°C every morning.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、湯の使用量には常に同じとは限らず、
日々大きくは季節によつて、また家族構成の変化
によつても変わる。
However, the amount of hot water used is not always the same.
It changes greatly from day to day, depending on the season, and also due to changes in family structure.

常に85℃など一定温度の湯を沸き上げる上記従
来の電気温水器は、これらの必要熱量の変化に追
随するには沸き上げ温度を毎日設定することが必
要で、操作の煩わしいものとなり、一度設定した
ら操作しない場合が多くなつている。
The above-mentioned conventional electric water heaters, which always boil water at a constant temperature such as 85 degrees Celsius, require setting the boiling temperature every day to keep up with these changes in the amount of heat required, which is cumbersome to operate. It is becoming more and more common for people not to operate the device after doing so.

従つて残湯をしたまま使用しているのが一般的
となつていて、沸き上げられた高温湯を長時間使
用供さないで放置することになり、貯湯タンクか
らの自然放熱ロスが大きくなるという問題点を有
していた。
Therefore, it has become common to use the remaining hot water, which means that the boiled high-temperature water is left unused for a long time, increasing the loss of natural heat radiation from the hot water storage tank. There was a problem.

この発明はこれら従来の問題点を解決しようと
するもので、過去の沸き上げ実績、給水水温及び
残湯の状態に応じて適正な湯量だけ沸き上げると
ともに、発熱体への通電を適正な時刻に開始して
自然放熱ロスを小さくした電気温水器の制御装置
を得ることを目的とするものである。
This invention attempts to solve these conventional problems.It boils only the appropriate amount of hot water according to past boiling results, the water supply temperature, and the state of the remaining hot water, and also turns on electricity to the heating element at the appropriate time. The object of the present invention is to obtain a control device for an electric water heater that reduces natural heat radiation loss.

〔問題点を解決するための手段〕[Means for solving problems]

この発明にかかる電気温水器の制御装置は、給
水水温、貯湯タンク上部温度、及び沸き上げ温度
を検出する各温度センサーと、使用湯量を検出す
る流量センサーと、過去の沸き上げ実績から沸き
上げ目標印加電力量と沸き上げ目標温度を設定す
る沸き上げ目標設定手段と、各センサーの検出値
から残湯分の電力量を算出し、その値を基に発熱
体への正味通電時間を算出し、その正味通電時間
から深夜電力供給時間帯の後半に沸き上げが終了
するように発熱体への通電開始時刻を算出する演
算手段と、算出された通電開始時刻になると発熱
体への通電を開始し、沸き上げ目標温度に到達し
たら発熱体への通電を停止するように制御する制
御手段と、発熱体への通電が停止された時点での
発熱体通電時間と湯温を記憶する記憶手段を設け
たものである。
The electric water heater control device according to the present invention includes temperature sensors that detect the water supply temperature, the upper temperature of the hot water storage tank, and the boiling temperature, a flow rate sensor that detects the amount of hot water used, and a boiling target based on past boiling results. A boiling target setting means that sets the applied electric energy and the boiling target temperature, calculates the electric energy for the remaining hot water from the detected value of each sensor, calculates the net energization time to the heating element based on the value, Calculating means calculates the start time of energization to the heating element so that boiling ends in the latter half of the late-night power supply period from the net energization time, and a calculation means that starts energization of the heating element at the calculated energization start time. , a control means for controlling the electricity supply to the heating element to be stopped when the boiling target temperature is reached, and a storage means for storing the electricity supply time for the heating element and the water temperature at the time when the electricity supply to the heating element is stopped. It is something that

〔作用〕[Effect]

この発明においては、過去の使用湯量の実績か
ら予想される翌日の使用湯量、給水水温及び貯湯
タンク内の残湯量の状態から適正な湯量だけ沸き
上げるよう制御するとともに、予め適正な発熱体
への正味通電時間を算出して所定の時刻に通電を
開始するように制御する。
In this invention, control is performed to boil only the appropriate amount of hot water based on the amount of hot water expected to be used the next day based on past results of hot water usage, the temperature of the supplied water, and the amount of hot water remaining in the hot water storage tank. The net energization time is calculated and the energization is controlled to start at a predetermined time.

〔実施例〕〔Example〕

第1図はこの発明による電気温水器の制御装置
の一実施例の全体構成図である。
FIG. 1 is an overall configuration diagram of an embodiment of a control device for an electric water heater according to the present invention.

この実施例は第1図から明らかなように、給水
管5の途中に水温センサー8と流量センサー9を
設けるとともに、貯湯タンク1の下部及び上部に
沸き上げ湯温センサー10及び上部温度センサー
11をそれぞれ設け、上記流量センサー9、水温
センサー8、上部温度センサー11の各検出信号
を基に、演算手段16はまず、残湯熱量相当分の
電力量を演算し、次に沸き上げ目標設定手段13
が過去の使用湯量の実績から翌日必要と予想され
る印加電力量と沸き上げ温度を設定すると、上記
残湯分の電力量と沸き上げ目標設定手段13の結
果に基づき、適正な湯量だけ沸き上げるための正
味通電時間を算出し、その結果に基づいてタイム
スイツチ7がONしてから発熱体2へ通電するま
での時間を演算し、その結果に基づいて発熱体2
を制御手段17により制御し、沸き上げ完了後
は、上記湯温センサー10によつて検出した湯温
と、発熱体2へ通電した正味通電時間と、上記流
量センサー9によつて検出した残湯量を記憶手段
18に記憶するように構成されている。
As is clear from FIG. 1, in this embodiment, a water temperature sensor 8 and a flow rate sensor 9 are installed in the middle of the water supply pipe 5, and a boiling water temperature sensor 10 and an upper temperature sensor 11 are installed at the bottom and top of the hot water storage tank 1. Based on the detection signals of the flow rate sensor 9, water temperature sensor 8, and upper temperature sensor 11, the calculation means 16 first calculates the amount of electricity equivalent to the heat amount of the remaining water, and then the boiling target setting means 13
sets the amount of applied power and boiling temperature that are expected to be required the next day based on past results of the amount of hot water used, and then only the appropriate amount of hot water is boiled based on the amount of power for the remaining hot water and the results of the boiling target setting means 13. Calculate the net energization time for the heating element 2, calculate the time from when the time switch 7 is turned on to energize the heating element 2 based on the result, and calculate the net energization time for the heating element 2 based on the result.
is controlled by the control means 17, and after the completion of boiling, the water temperature detected by the water temperature sensor 10, the net energization time to the heating element 2, and the amount of remaining water detected by the flow rate sensor 9 are controlled by the control means 17. is configured to be stored in the storage means 18.

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、19は制御回路内のマイクロコンピユー
タであり、CPU20、メモリ21、入力回路2
2、出力回路23を有している。発熱体制御回路
24は、抵抗25、トランジスタ26、リレー2
7,28とから構成されている。
In the figure, 19 is a microcomputer in the control circuit, including a CPU 20, a memory 21, and an input circuit 2.
2. It has an output circuit 23. The heating element control circuit 24 includes a resistor 25, a transistor 26, and a relay 2.
7 and 28.

前記リレー27の付勢コイル27aは、トラン
ジスタ26を介して正極端子+VとGND端子と
の間に接続され、前記トランジスタ26のベース
は抵抗25を介して出力回路23に接続されてい
る。
The energizing coil 27a of the relay 27 is connected between the positive terminal +V and the GND terminal via a transistor 26, and the base of the transistor 26 is connected to the output circuit 23 via a resistor 25.

前記リレー27の接点27bは前記リレー28
の付勢コイル28aと電源29に対して直列に接
続されている。前記リレー28の接点28bは、
発熱体2と前記電源6に対して直列に接続されて
いる。
The contact 27b of the relay 27 is connected to the relay 28.
The energizing coil 28a and the power source 29 are connected in series. The contact 28b of the relay 28 is
The heating element 2 and the power source 6 are connected in series.

29,30,31は各温度センサー8,10,
11と直列に接続される抵抗、32は各温度セン
サー8,10,11の検出出力が入力されるアナ
ログマルチプレクサ、33はその出力をデイジタ
ルに変換するA/D変換器、34は流量センサー
9の検出出力が入力されるパルスカウンターであ
り、その出力と前記A/D変換器33の出力は入
力回路22に与えられる。
29, 30, 31 are each temperature sensor 8, 10,
11 is a resistor connected in series; 32 is an analog multiplexer into which the detection outputs of the temperature sensors 8, 10, and 11 are input; 33 is an A/D converter that converts the outputs into digital; 34 is the flow rate sensor 9; It is a pulse counter into which a detection output is input, and its output and the output of the A/D converter 33 are applied to the input circuit 22.

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19のメモリ2
1に記憶された発熱体制御を示すフローチヤート
である。まず電源を入れると同時に第3図に示す
ステツプ35で沸き上げ目標印加電力P、目標温度
Tの初期設定がスタートする。
Figure 3 shows the memory 2 of the microcomputer 19.
1 is a flowchart showing heating element control stored in FIG. First, when the power is turned on, initial setting of the target applied power P and target temperature T for boiling starts at step 35 shown in FIG.

次に、ステツプ36では印加電力量修正係数αの
設定を行う。初期値としてそれぞれ、 P=4.4×8、T=85℃、α=1.0を与える。ス
テツプ37で水温Twを読み取り、ステツプ38で残
湯温度Tzを読み取り、ステツプ39で残湯量Vz
読み取る。さらにステツプ40で残湯量Vzをメモ
リ21に記憶する。
Next, in step 36, the applied power amount correction coefficient α is set. As initial values, P=4.4×8, T=85°C, and α=1.0 are given, respectively. In step 37, the water temperature Tw is read, in step 38 the remaining hot water temperature Tz is read, and in step 39 the remaining hot water amount Vz is read. Further, in step 40, the remaining hot water amount Vz is stored in the memory 21.

次にステツプ41で残湯分電力量Kzを求める。 Next, in step 41, the electric energy Kz for the remaining hot water is determined.

Kz=Vz×(Tz−Tw)/860×η ここで、ηは加熱効率を示す。 K z =V z ×(T z −T w )/860×η Here, η indicates heating efficiency.

次にステツプ42で、沸き上げ目標印加電力量P
と残湯相当分電力量Kzから発熱体2へ通電する
正味通電時間Haを求める。
Next, in step 42, the target applied power amount P for boiling is
The net energization time H a for energizing the heating element 2 is determined from the amount of electricity K z corresponding to the remaining hot water.

Ha=P−Kz/W Wは発熱体2の消費電力である。ステツプ43はス
テツプ42で求めた沸き上げのために要する正味通
電時間Haを深夜電力供給時間帯のどの時間帯に
配分するか、すなわちタイムスイツチ7がONし
てから何時間後に通電を開始するかを求めるもの
である。
Ha = P-K z /W W is the power consumption of the heating element 2. In step 43, the net energization time H a required for boiling determined in step 42 is allocated to which time slot in the late-night power supply period, that is, in what hours after the time switch 7 is turned on, energization is started. This is what we are looking for.

H=8−Ha ステツプ44はタイムスイツチ7がONしたかど
うかを調べるものであり、ONと同時にステツプ
45で前記通電開始時間Hの時間経過を調べるH時
間が経過したら、ステツプ46で発熱体2への通電
を開始し、湯温が沸き上げ目標温度Tになつたか
どうかをステツプ47で判定する。判定した結果が
等しくなつたら、ステツプ49で発熱体2をOFF
し、まだ目標温度に到達していないならタイムス
イツチ7がOFFしたかどうかステツプ48で調べ
る。その結果ONの状態ならステツプ47を実行
し、OFFならステツプ49を実行する。ステツプ
50では沸き上げ完了時点までの正味通電時間と沸
き上げ湯温をメモリ21に記憶する。
H=8-H a Step 44 is to check whether time switch 7 is turned on.
At step 45, the elapse of the energization start time H is checked. When time H has elapsed, energization to the heating element 2 is started at step 46, and it is determined at step 47 whether or not the water temperature has reached the target temperature T. If the determined results are equal, turn off the heating element 2 in step 49.
However, if the target temperature has not yet been reached, it is checked in step 48 whether time switch 7 has been turned off. If the result is ON, step 47 is executed, and if OFF, step 49 is executed. step
At step 50, the net energization time and the boiling water temperature up to the point of completion of boiling are stored in the memory 21.

次にステツプ51は、メモリ21に既に記憶してお
いた過去n日間の正味通電時間Ha1、Ha2…Hao
沸き上げ湯温T1、T2…To、残湯量Vz1、Vz2
Vzoを読み出し、過去n日間の正味通電時間Ha1
Ha2…Haoから平均消費電力量Pavをステツプ52で
求める。
Next, in step 51, the net energization times H a1 , H a2 . . . H ao ,
Boiling water temperature T 1 , T 2 ...T o , remaining water amount V z1 , V z2 ...
Read V zo and calculate the net energization time H a1 for the past n days,
In step 52, the average power consumption P av is determined from H a2 . . . H ao .

ステツプ53では前記残湯量Vz1、Vz2…Vzoを既
に決めておいた基準残湯量VBと比較判定し、残
湯量が基準残湯量VBよりも多ければ、多い日が
例えばm=3日)以上かどうかステツプ54で判定
し、m日以上なら印加電力量修正係数αをステツ
プ55でマイナス修正(例えばα=α−0.1)する。
In step 53, the residual hot water amounts V z1 , V z2 . . . It is determined in step 54 whether or not it is longer than m days, and if it is longer than m days, the applied power correction coefficient α is negatively modified (for example, α=α−0.1) in step 55.

また残湯量が基準残湯VBよりも少なければ、
少ない日が連続m日以上かどうかをステツプ56で
判定し、m日以上ならステツプ57で印加電力量修
正係数αをプラス修正(例えばα=α+0.1)す
る。
Also, if the amount of remaining hot water is less than the standard remaining hot water V B ,
It is determined in step 56 whether or not the number of days with low power consumption is m or more consecutive days, and if it is m or more, the applied power amount correction coefficient α is modified in a positive manner (for example, α=α+0.1) in step 57.

ここで求めた修正係数αは、ステツプ58で沸き
上げ目標印加電力量Pを設定するために使われ
る。即ち P=Pav×α 次に、ステツプ59では前記ステツプ51で読み出
した湯温T1、T2…Toの最大値Tnaxを選び出し、
ステツプ59で翌日の沸き上げ目標温度Tとして決
定する。
The correction coefficient α obtained here is used in step 58 to set the target applied power amount P for boiling. That is, P=P av ×α Next, in step 59, the maximum value T nax of the hot water temperatures T 1 , T 2 . . . T o read in step 51 is selected, and
In step 59, the target boiling temperature T for the next day is determined.

〔発明の効果〕〔Effect of the invention〕

以上のようにこの発明によれば、翌日の沸き上
げ温度を過去の使用湯量の実績から予想し、また
水温及び貯湯タンク内の残湯の状態から適正な湯
量だけ沸き上げるよう構成したので、生活のリズ
ムに合つた適正な湯量を自動的に予想することが
でき、残湯を少なくして維持費が安くなる。また
通電時間を予知することが期待できるので、ピー
ク・シフト効果が期待できる。
As described above, according to this invention, the next day's boiling temperature is predicted based on the past amount of hot water used, and the system is configured to boil only the appropriate amount of hot water based on the water temperature and the state of the remaining hot water in the hot water storage tank. The system can automatically predict the appropriate amount of hot water to match the rhythm of the day, reducing the amount of remaining hot water and lowering maintenance costs. Furthermore, since it is possible to predict the energization time, a peak shift effect can be expected.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明による電気温水器の制御装置
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図はその動作をしめすフ
ローチヤート図である。第4図、第5図は従来の
貯湯式電気温水器を示すもので、第4図はその概
略構造図、第5図は主要電気回路図である。 図中、8,10,11は温度センサー、9は流
量センサー、13は沸き上げ目標設定手段、16
は演算手段、17は制御手段、18は記憶手段、
19はマイクロコンピユータ、24は発熱体制御
回路である。尚、図中同一符号は同一又は相当部
分を示す。
FIG. 1 is an overall configuration diagram showing one embodiment of a control device for an electric water heater according to the present invention, FIG. 2 is a circuit diagram showing its electrical connections, and FIG. 3 is a flowchart showing its operation. 4 and 5 show a conventional hot water storage type electric water heater, FIG. 4 is a schematic structural diagram thereof, and FIG. 5 is a main electric circuit diagram. In the figure, 8, 10, 11 are temperature sensors, 9 is a flow rate sensor, 13 is a boiling target setting means, 16
is a calculation means, 17 is a control means, 18 is a storage means,
19 is a microcomputer, and 24 is a heating element control circuit. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】 1 深夜電力利用の電気温水器において、 貯湯タンクへの給水水温を検出する水温センサ
ーと、 貯湯タンク上部の温度を検出する上部温度セン
サーと、 使用湯量を検出する流量センサーと、 貯湯タンク内の沸き上げ温度を検出する湯温セ
ンサーと、 過去の沸き上げ時間と沸き上げ湯温から沸き上
げ目標印加電力量と温度を設定する沸き上げ目標
設定手段と、 上記各センサーの検出値から残湯熱量相当分の
電力量を算出し、その残湯分電力量と前記沸き上
げ目標設定手段で設定した目標印加電力量とに基
づいて発熱体への正味通電時間を算出するととも
に、その正味通電時間から深夜電力供給時間帯の
後半に沸き上げが終了するように発熱体への通電
開始時刻を算出する演算手段と、 前記演算手段で算出した通電開始時刻になると
発熱体への通電を開始し、上記沸き上げ目標設定
手段で設定した湯温に到達したら、発熱体への通
電を停止するよう制御するための制御手段と、 発熱体への通電を停止した時点での通電時間と
湯温を記憶する記憶手段とを備えてなる電気温水
器の制御装置。
[Scope of Claims] 1. An electric water heater that uses late-night electricity includes a water temperature sensor that detects the temperature of water supplied to a hot water storage tank, an upper temperature sensor that detects the temperature of the upper part of the hot water storage tank, and a flow rate sensor that detects the amount of hot water used. , a water temperature sensor that detects the boiling temperature in the hot water storage tank, a boiling target setting means that sets the boiling target applied power amount and temperature from the past boiling time and boiling water temperature, and detection of each of the above sensors. Calculating the amount of electricity equivalent to the heat value of the remaining hot water from the value, and calculating the net energization time to the heating element based on the amount of electricity for the remaining hot water and the target applied amount of electricity set by the boiling target setting means, calculation means for calculating the start time of energization to the heating element so that heating ends in the latter half of the late-night power supply period from the net energization time; and energization to the heating element when the energization start time calculated by the calculation means is reached. a control means for controlling to stop energizing the heating element when the water temperature reaches the temperature set by the boiling target setting means; and a control means for controlling the energization time at the time when the energization to the heating element is stopped; A control device for an electric water heater, comprising a storage means for storing water temperature.
JP59208808A 1984-10-04 1984-10-04 Control device for electric water heater Granted JPS6186531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59208808A JPS6186531A (en) 1984-10-04 1984-10-04 Control device for electric water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59208808A JPS6186531A (en) 1984-10-04 1984-10-04 Control device for electric water heater

Publications (2)

Publication Number Publication Date
JPS6186531A JPS6186531A (en) 1986-05-02
JPH0322552B2 true JPH0322552B2 (en) 1991-03-27

Family

ID=16562461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59208808A Granted JPS6186531A (en) 1984-10-04 1984-10-04 Control device for electric water heater

Country Status (1)

Country Link
JP (1) JPS6186531A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0240438Y2 (en) * 1986-10-24 1990-10-29
JP5662235B2 (en) * 2011-04-26 2015-01-28 株式会社コロナ Hot water storage water heater
CN110906563B (en) * 2019-12-06 2021-05-18 华帝股份有限公司 Intelligent pressurization control method for gas water heater

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60155858A (en) * 1984-01-25 1985-08-15 Matsushita Electric Ind Co Ltd Hot-water supplier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60155858A (en) * 1984-01-25 1985-08-15 Matsushita Electric Ind Co Ltd Hot-water supplier

Also Published As

Publication number Publication date
JPS6186531A (en) 1986-05-02

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