JP2858788B2 - Operation control method of electric water heater - Google Patents
Operation control method of electric water heaterInfo
- Publication number
- JP2858788B2 JP2858788B2 JP15458189A JP15458189A JP2858788B2 JP 2858788 B2 JP2858788 B2 JP 2858788B2 JP 15458189 A JP15458189 A JP 15458189A JP 15458189 A JP15458189 A JP 15458189A JP 2858788 B2 JP2858788 B2 JP 2858788B2
- Authority
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- Japan
- Prior art keywords
- temperature
- tank
- water heater
- electric water
- calculated
- 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.)
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Landscapes
- Control For Baths (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、電気温水器の必要とする通電時間帯を演算
する制御方法に関するものである。Description: TECHNICAL FIELD The present invention relates to a control method for calculating an energization time zone required by an electric water heater.
従来の装置は特公昭63−35904号公報に記載のよう
に、タンク内の残湯量を算出し、残湯量を元に通電必要
時間、および通電時間帯数を算出するものであった。As described in JP-B-63-35904, the conventional apparatus calculates the amount of remaining hot water in a tank, and calculates the required power supply time and the number of power supply time zones based on the remaining hot water amount.
上記従来技術は、通電時間の演算に於いて、その演算
精度、演算の難易、演算の共用性について配慮がなされ
ておらず、安価なマイクロコンピュータ（４ビットマイ
コン）では扱い難いものであった。In the above prior art, no consideration is given to the calculation accuracy, the difficulty of the calculation, and the commonality of the calculation in the calculation of the energization time, and it is difficult to handle with an inexpensive microcomputer (4-bit microcomputer).
本発明は、演算内容を簡略化し、演算精度を落とすこ
となく、４ビットマイコンにても容易に扱える演算方法
を提供することにある。An object of the present invention is to provide a calculation method which simplifies calculation contents and can be easily handled by a 4-bit microcomputer without lowering the calculation accuracy.
上記目的を達成するため、本発明の電気温水器の運転
制御方法は、電力供給時間帯を小さな時間帯に分割し、
必要熱量を保有すべき必要通電時間を計算し、この必要
通電時間を、上記の小さな時間帯に予め定めた優先順位
に従って割り当てる電気温水器の運転制御方法におい
て、目標沸き上げ温度（To）から、タンクの垂直方向の
全長に亘って取り付けた温度センサ又は式（Ａ）若しく
は式（Ｂ）により求められるタンク内平均温度（Tm）を
差し引いた値に一定数（Ｃ）を乗ずることにより、必要
通電時間帯数（Ｎ）を演算することを特徴とする。In order to achieve the above object, the operation control method of the electric water heater of the present invention divides a power supply time period into small time periods,
In the method for controlling the operation of the electric water heater, the necessary energizing time for retaining the required heat quantity is calculated, and the necessary energizing time is allocated according to a predetermined priority order in the above-mentioned small time zone, from the target boiling temperature (T o ). , By multiplying a constant number (C) by a value obtained by subtracting the temperature sensor (T m ) obtained by Equation (A) or Equation (B) from the temperature sensor attached over the entire length of the tank in the vertical direction. It is characterized in that the number of required power supply time zones (N) is calculated.
Tm＝ｆ・T1＋（１−ｆ）・T2 ・・・（Ａ） Tm＝f1・T1＋f2・T2＋・・・＋fn・Tn ・・・（Ｂ） ここで、 T1:タンク内上部温度 T2:タンク内下部温度 f :タンク内の残湯量のタンク容量に対する比率 T1,T2,・・・,Tn:タンク内温度 f1,f2,・・・,fn:各タンク内温度に対応する容量比 f1＋f2＋・・・＋fn＝１ である。 T m = f · T 1 + (1-f) · T 2 ··· (A) T m = f 1 · T 1 + f 2 · T 2 + ··· + f n · T n ··· (B) Here, T 1 : Upper temperature in tank T 2 : Lower temperature in tank f: Ratio of remaining hot water in tank to tank capacity T 1 , T 2 , ..., T n : Temperature in tank f 1 , f 2 ,..., F n : Capacity ratio f 1 + f 2 +... + F n = 1 corresponding to the temperature in each tank.
この場合において、電力供給時間帯が終了したとき
に、目標沸き上げ温度（To）に達していない場合は、目
標沸き上げ温度（To）と実温度との差に一定定数（Ｃ）
を乗じた値を次回の演算時の必要通電時間帯数（Ｎ）に
加えることができる。In this case, when the power supply time period ends, if the target boiling temperature (T o ) has not been reached, the difference between the target boiling temperature (T o ) and the actual temperature is a constant (C).
Can be added to the number of required power supply time zones (N) in the next calculation.
このように、本発明の電気温水器の運転制御方法は、
取り扱う数値を標準化し、演算精度の維持と演算の簡略
化を図ったものである。As described above, the operation control method of the electric water heater according to the present invention includes:
Numerical values to be handled are standardized to maintain the calculation accuracy and simplify the calculation.
さらに、温水器のタンク容量が変化しても、制御装置
自身は共用できるよう演算式を変形したものである。Further, the arithmetic expression is modified so that the control device itself can be shared even if the tank capacity of the water heater changes.
一般に、電気温水器の必要通電時間TBは で表わされる。ここに、Qoは貯わえておくべき熱量（Kc
al）、QTはタンク内の保有熱量（Kcal）、Ｐはヒータ容
量（kW）、ηは加熱効率である。Generally, the required energization time T B of an electric water heater is Is represented by Here, Q o is the amount of heat should be貯Wae (Kc
al), Q T is the amount of heat retained in the tank (Kcal), P is the heater capacity (kW), and η is the heating efficiency.
また貯わえておくべき熱量QOは、 QO＝TO×VT （Kcal） ……（２） で表わされる。ここにTOは沸き上げ目標温度、VTは温水
器のタンク容量である。The amount of heat Q O to be stored is represented by Q O = T O × V T (Kcal) (2). Here T O is the boiling target temperature, V T is the tank capacity of the water heater.
タンク内の保有熱量QTは、通常、残湯のもつ熱量と給
水された水のもつ熱量を合わせもっている。The amount of heat Q T held in the tank generally includes the amount of heat of the remaining hot water and the amount of heat of the supplied water.
従来の制御装置に於いては、タンクの垂直方向に複数
の温度センサを設け、各部の温度を検出することによ
り、タンク内の残湯量を算出する構成であったため、タ
ンク内の保有熱量の演算式は、 QT＝Th×Vh＋Tw×（VT−Vh） ……（３） ここにTh:残湯の温度、Vh:残湯量、Tw:タンク下部温
度である。In the conventional control device, a plurality of temperature sensors are provided in the vertical direction of the tank, and the amount of remaining hot water in the tank is calculated by detecting the temperature of each part. expression, Q T = T h × V h + T w × (V T -V h) ...... (3) here Th: the temperature of the remaining hot water, Vh: the remaining hot water, Tw: a tank bottom temperature.
また、通電回数Ｎは Ｎ＝TB/△Ｔ ……（４） で表わされ、ここに△Ｔは分割した小時間帯の幅であ
る。The number N of times of energization is represented by N = T B / ΔT (4), where ΔT is the width of the divided small time zone.
しかしながら、タンク内平均温度に着目すると（３）
式は、 QT＝Tm×VT ……（５） に変形できる。ここにTmはタンク内平均温度である。However, focusing on the average temperature in the tank, (3)
The equation can be transformed into Q T = T m × V T (5). Here, Tm is the average temperature in the tank.
（５）式と（１），（２）式をまとめると、 また（４）式は と表わすことができる。Summarizing equation (5) and equations (1) and (2), Equation (4) is Can be expressed as
また、VT,△T,P,ηは、温水器にとって固有の数値で
一定値をもつ、従って（７）式は Ｎ＝Ｃ・（To−Tm） ……（７）′ と簡略化できる。V T , △ T, P, η is a unique value for the water heater and has a constant value. Therefore, equation (7) is simplified as N = C · (T o −T m ) (7) ′ Can be
本発明は、タンク内平均温度に着目し、検出したタン
ク内代表温度をタンク内平均温度Tmとして扱うことによ
り、演算を簡略化することにある。The present invention focuses on the average temperature in the tank, by treating the detected tank representative temperature as the average temperature T m in the tank, it is to simplify the calculation.
以下本発明の一実施例を第１図〜第２図により説明す
る。An embodiment of the present invention will be described below with reference to FIGS.
第１図は、本発明の一実施例の概略構造図である。タ
ンク１の下方に給水管２、上方に出湯管３が設けてあ
り、タンク１内の水をヒータ４で加熱する。５はタンク
１の垂直方向の外面の全長に亘って取り付けた温度セン
サであり、タンク１の垂直方向の平均的な代表温度を検
出する。６は制御装置であり、温度センサ５の信号等を
元に、ヒータ４のON−OFFを制御する。FIG. 1 is a schematic structural view of one embodiment of the present invention. A water supply pipe 2 is provided below the tank 1, and a tapping pipe 3 is provided above the tank 1. The water in the tank 1 is heated by the heater 4. Reference numeral 5 denotes a temperature sensor mounted over the entire length of the outer surface of the tank 1 in the vertical direction, and detects an average representative temperature of the tank 1 in the vertical direction. Reference numeral 6 denotes a control device which controls ON / OFF of the heater 4 based on a signal of the temperature sensor 5 and the like.
第２図は、上記実施例の制御方法のフローチャートで
ある。まず、温度センサ５で検出した温度をタンク内代
表温度Tmとする。次に、代表温度Tmを元に、必要な通電
時間帯数Ｎを算出する。FIG. 2 is a flowchart of the control method of the above embodiment. First, the temperature detected by the temperature sensor 5 is set as the tank internal representative temperature Tm. Next, based on the representative temperature Tm, the necessary number N of energization time zones is calculated.
Ｎは、 Ｎ＝Ｃ・（To−Tm） の式にて演算される。ここにToは予め設定された目標沸
き上げ温度である。N is calculated by the following equation: N = C · (To−Tm). Here, To is a preset target boiling temperature.
またＣは次式によって前もって算出した定数である。 C is a constant calculated in advance by the following equation.
次に、上記で最出した必要な通電時間帯数Ｎを予め定
めておいた優先順位に従って電力通電時間に割当て、通
電パターンを作成する。この通電パターンに従って、内
蔵のタイマによりヒータ４への通電のON−OFFを制御す
るものである。 Next, the number N of the necessary energization time zones that are found out above is allocated to the power energization time in accordance with a predetermined priority, and an energization pattern is created. According to this energization pattern, ON / OFF of energization to the heater 4 is controlled by a built-in timer.
かかる構成によれば、演算式が簡単であり、ソフトウ
ェアが簡略化でき、また演算器のメモリーも節約できる
効果がある。さらに、演算時に取扱う変数が温度に関す
るもののみであるため、タンク容量とヒータ容量の比が
一定の電気温水器であれば演算器が共用できる効果もあ
る。According to such a configuration, the operation formula is simple, the software can be simplified, and the memory of the operation unit can be saved. Furthermore, since only variables relating to temperature are handled at the time of calculation, there is an effect that the calculator can be shared if the ratio of the tank capacity to the heater capacity is constant.
上記実施例では、温度センサ５にて、タンク内の平均
的な温度を検出したが、タンク上部，下部温度および、
タンク内残湯量のタンク容量に対する比率を検出し、そ
れぞれの温度を該比率にて加重平均して代表温度Tmを算
出してもよい。In the above embodiment, the temperature sensor 5 detects the average temperature in the tank.
The representative temperature Tm may be calculated by detecting the ratio of the amount of remaining hot water in the tank to the tank capacity, and weighing and averaging the respective temperatures with the ratio.
第３図は、上記実施例の概略構造図、第４図は代表温
度Tmの演算器ブロック図である。FIG. 3 is a schematic structural diagram of the above embodiment, and FIG. 4 is a block diagram of a calculator for the representative temperature Tm.
タンク上部に取付けた温度センサ８にて、上部温度T1
をタンク下部に取付けた温度センサ９にて下部温度T2を
検出する。7a〜7cはタンク垂直方向に分布させた温度セ
ンサであり、タンク内の残湯量のタンク容量に対する比
率ｆを検出する。これは、各温度センサをタンク容量の
比率に対応させた位置、例えば、タンク容量の1/4,1/2,
3/4位置に取付けることで実現可能である。The upper temperature T 1 is detected by the temperature sensor 8 attached to the upper part of the tank.
Detecting a lower temperature T 2 by the temperature sensor 9 attached to the tank bottom a. 7a to 7c are temperature sensors distributed in the vertical direction of the tank, and detect a ratio f of the amount of remaining hot water in the tank to the tank capacity. This is the position where each temperature sensor corresponds to the ratio of the tank capacity, for example, 1/4, 1/2,
It can be realized by mounting at 3/4 position.
上記の検出値T1,T2,fを元に、次式により代表温度Tm
を算出する。Based on the above detected values T 1 , T 2 and f, the representative temperature Tm
Is calculated.
Tm＝ｆ・T1＋（１−ｆ）・T2 以下の制御フローは、第２図に同じである。 Tm = f · T 1 + ( 1-f) · T 2 following control flow is the same as in Figure 2.
また、残湯のもつ熱エネルギーを余裕分と考えれば、
上記代表温度としてタンク下部温度T2を用いることも可
能である。この場合は、下部温度T2が目標沸き上げ温度
T0に達したらヒータをOFFすることにより、沸かし過ぎ
は防止できる。Also, if you consider the heat energy of the remaining hot water as extra,
It is also possible to use the tank bottom temperature T 2 as the representative temperature. In this case, the lower temperature T 2 is the target boiling temperature
By turning off the heater when the temperature reaches T 0 , overheating can be prevented.
また、タンク内の温度が、多層に分かれて分布する場
合は、タンク上の数点の温度を検出し、検出値を加重平
均して代表温度Tmを算出してもよい。When the temperature in the tank is distributed in multiple layers, the temperature at several points on the tank may be detected, and the representative temperature Tm may be calculated by weighted averaging the detected values.
例えば、第５図の概略構成図に示す、実施例のよう
に、タンク垂直方向に温度センサ10a〜10eを配置し、そ
れぞれの検出温度t1〜ｔを、各温度センサが、代表とす
るところの容量比f1〜f5で次式にて加重平均し、Tmを算
出してもよい。For example, as shown in the schematic configuration diagram of FIG. 5, temperature sensors 10a to 10e are arranged in the vertical direction of the tank as shown in the embodiment, and each detected temperature t 1 to t is represented by each temperature sensor. Tm may be calculated by performing weighted averaging with the following formula using the capacity ratios f 1 to f 5 .
Tm＝f1・t1＋f2・t2＋f3・t3＋f4・t4 ＋f5・t5 ここに f1＋f2＋f3＋f4＝１である。Tm = a f 1 · t 1 + f 2 · t 2 + f 3 · t 3 + f 4 · t 4 + f 5 · t 5 here f 1 + f 2 + f 3 + f 4 = 1.
第６図は、本発明の他の実施例のフローチャートであ
る。FIG. 6 is a flowchart of another embodiment of the present invention.
深夜電力が開始すると同時にタンク内代表温度を前記
の方法にて検出する。引き続き、通電時間帯数を演算す
るが、ここでの演算は、目標沸き上げ温度とタンク内代
表温度から算出する数値に、補正項αを加算している。
通常αの値は０である。At the same time that the midnight power starts, the representative temperature in the tank is detected by the above method. Subsequently, the number of energization time zones is calculated. In this calculation, the correction term α is added to a numerical value calculated from the target boiling temperature and the representative temperature in the tank.
Usually, the value of α is 0.
次に演算した通電時間帯数を、電力供給時間帯を細分
化した小さな時間帯に割当て、通電パターンを作成す
る。Next, the calculated energization time zone number is allocated to a small time zone obtained by subdividing the power supply time zone, and an energization pattern is created.
以上の処理を、第１回めのヒータONが発生するまでの
間繰返す。The above processing is repeated until the first heater ON occurs.
かかる構成によれば、深夜電力通電開始後、使用者が
お湯を使用し、タンク内の残湯量が減少した場合には、
通電パターンがただちに修正されるため、沸き上げ不足
を最小限におさえることが可能である。According to such a configuration, when the user uses hot water after the start of power supply at midnight and the amount of remaining hot water in the tank decreases,
Since the energization pattern is immediately corrected, it is possible to minimize insufficient boiling.
つぎに、ヒータの通電開始後は、作成した通電パター
ンに従って深夜電力の終了までの間、ヒータのON,OFFを
制御する。深夜電力の終了時刻になり、沸き上げ温度が
目標温度に達していない場合は、その差に一定数を剰じ
た値を従来の補正項αに加え、これを新しく補整項αと
置く。なお、一定数は、通電時間帯数を演算する際に用
いる一定数と同じ値である。算出した補正項は翌日の通
電時間帯数の演算時に用いる。Next, after the energization of the heater is started, ON / OFF of the heater is controlled according to the created energization pattern until the end of midnight power. When the end time of the midnight power is reached and the boiling temperature has not reached the target temperature, a value obtained by adding a certain number to the difference is added to the conventional correction term α, and this is newly set as the compensation term α. Note that the constant number is the same value as the constant number used when calculating the number of energization time zones. The calculated correction term is used when calculating the number of energization time zones on the next day.
かかる構成によれば、恒常的な電圧不足、あるいは、
深夜電力通電中のお湯の使用等により、沸き上げ不足が
発生するのを防止できる。According to such a configuration, a constant voltage shortage, or
Insufficient boiling can be prevented from occurring due to the use of hot water during the midnight power supply.
本発明によれば、沸き上げ目標温度からタンク内平均
温度を差し引いた値に一定数を乗ずることにより、必要
通電時間帯数を演算する構成したことにより、演算及び
メモリ内容を簡略化し、演算精度を落とすことなく、安
価なマイクロコンピュータ等によって容易に演算するこ
とができる。According to the present invention, the number of required power supply time periods is calculated by multiplying a value obtained by subtracting the average temperature in the tank from the target boiling temperature by a constant number, thereby simplifying the calculation and the memory contents, and improving the calculation accuracy. Can be easily calculated by an inexpensive microcomputer or the like without dropping the data.
また、電力供給時間帯が終了したときに、目標沸き上
げ温度に達していない場合は、目標沸き上げ温度と実温
度との差に一定定数を乗じた値を次回の演算時の必要通
電時間帯数に加えることにより、供給電力不足及びヒー
タ通電中において恒常的に発生する湯の使用に起因する
沸き上げ不足を防止することができる。If the target boiling temperature has not been reached at the end of the power supply time period, a value obtained by multiplying the difference between the target boiling temperature and the actual temperature by a constant constant is a necessary energizing time period for the next calculation. By adding to the number, it is possible to prevent shortage of heating due to shortage of supply power and use of hot water constantly generated during energization of the heater.
第１図は本発明の一実施例の概略構造図、第２図は、第
１図に於ける制御フローチャートである。 第３図，第５図は本発明の他の実施例の概略構造図、第
４図は第３図の実施例の演算回路ブロック図である。 第６図は、更に他の実施例のフローチャートである。 １……タンク、５……温度センサ、7a,7b,7c,8,9,10a〜
10e……温度センサ。FIG. 1 is a schematic structural diagram of one embodiment of the present invention, and FIG. 2 is a control flowchart in FIG. 3 and 5 are schematic structural views of another embodiment of the present invention, and FIG. 4 is a block diagram of an arithmetic circuit of the embodiment of FIG. FIG. 6 is a flowchart of still another embodiment. 1 ... tank, 5 ... temperature sensor, 7a, 7b, 7c, 8, 9, 10a ~
10e …… Temperature sensor.
フロントページの続き (56)参考文献 特開 昭57−169532（ＪＰ，Ａ) 特開 昭61−8553（ＪＰ，Ａ) 特開 昭60−207851（ＪＰ，Ａ) 特開 昭61−11552（ＪＰ，Ａ) 特公 昭63−35904（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) F24H 1/18 302Continuation of the front page (56) References JP-A-57-169532 (JP, A) JP-A-61-8553 (JP, A) JP-A-60-207851 (JP, A) JP-A-61-11552 (JP) , A) JP-B-63-35904 (JP, B2) (58) Fields investigated (Int. Cl. 6 , DB name) F24H 1/18 302
Claims (4)
必要熱量を保有すべき必要通電時間を計算し、この必要
通電時間を、上記の小さな時間帯に予め定めた優先順位
に従って割り当てる電気温水器の運転制御方法におい
て、目標沸き上げ温度（To）からタンクの垂直方向の全
長に亘って取り付けた温度センサにより求められるタン
ク内平均温度（Tm）を差し引いた値に一定数（Ｃ）を乗
ずることにより、必要通電時間帯数（Ｎ）を演算するこ
とを特徴とする電気温水器の運転制御方法。1. The power supply time zone is divided into small time zones,
In the method for controlling the operation of the electric water heater, the necessary energizing time for retaining the required heat quantity is calculated, and the necessary energizing time is allocated according to a predetermined priority order in the above-mentioned small time zone, from the target boiling temperature (T o ). The required number of energizing time zones (N) is calculated by multiplying a value obtained by subtracting the average temperature in the tank (T m ) obtained by the temperature sensor attached over the entire length in the vertical direction of the tank by a constant number (C). An operation control method for an electric water heater.
必要熱量を保有すべき必要通電時間を計算し、この必要
通電時間を、上記の小さな時間帯に予め定めた優先順位
に従って割り当てる電気温水器の運転制御方法におい
て、目標沸き上げ温度（To）から式（Ａ）により求めら
れるタンク内平均温度（Tm）を差し引いた値に一定数
（Ｃ）を乗ずることにより、必要通電時間帯数（Ｎ）を
演算することを特徴とする電気温水器の運転制御方法。 Tm＝ｆ・T1＋（１−ｆ）・T2 ・・・（Ａ） ここで、 T1:タンク内上部温度 T2:タンク内下部温度 f :タンク内の残湯量のタンク容量に対する比率 である。2. The power supply time zone is divided into small time zones,
In the method for controlling the operation of the electric water heater, the necessary energizing time for retaining the required heat quantity is calculated, and the necessary energizing time is allocated according to a predetermined priority order in the above-mentioned small time zone, from the target boiling temperature (T o ). An electric water heater characterized in that a required number of energizing time zones (N) is calculated by multiplying a value obtained by subtracting the average tank temperature (T m ) obtained by the equation (A) by a constant number (C). Operation control method. T m = f · T 1 + (1−f) · T 2 (A) where T 1 : upper temperature in the tank T 2 : lower temperature in the tank f: amount of remaining hot water in the tank with respect to the tank capacity Ratio.
必要熱量を保有すべき必要通電時間を計算し、この必要
通電時間を、上記の小さな時間帯に予め定めた優先順位
に従って割り当てる電気温水器の運転制御方法におい
て、目標沸き上げ温度（To）から式（Ｂ）により求めら
れるタンク内平均温度（Tm）を差し引いた値に一定数
（Ｃ）を乗ずることにより、必要通電時間帯数（Ｎ）を
演算することを特徴とする電気温水器の運転制御方法。 Tm＝f1・T1＋f2・T2＋・・・＋fn・Tn ・・・（Ｂ） ここで、 T1,T2,・・・,Tn:タンク内温度 f1,f2,・・・,fn:各タンク内温度に対応する容量比 f1＋f2＋・・・＋fn＝１ である。3. The power supply time period is divided into small time periods,
In the method for controlling the operation of the electric water heater, the necessary energizing time for retaining the required heat quantity is calculated, and the necessary energizing time is allocated according to a predetermined priority order in the above-mentioned small time zone, from the target boiling temperature (T o ). An electric water heater characterized in that a required number of energizing time zones (N) is calculated by multiplying a value obtained by subtracting the average tank temperature (T m ) obtained by the equation (B) by a constant number (C). Operation control method. T m = f 1 · T 1 + f 2 · T 2 + ... + f n · T n ... (B) where T 1 , T 2 , ..., T n : tank temperature f 1 , f 2 ,..., f n : Capacity ratio f 1 + f 2 +... + f n = 1 corresponding to the temperature in each tank.
き上げ温度（To）に達していない場合は、目標沸き上げ
温度（To）と実温度との差に一定定数（Ｃ）を乗じた値
を次回の演算時の必要通電時間帯数（Ｎ）に加えること
を特徴とする請求項１、２又は３記載の電気温水器の運
転制御方法。4. When the power supply time period ends, if the target boiling temperature (T o ) has not been reached, the difference between the target boiling temperature (T o ) and the actual temperature is a constant (C). 4. The operation control method for an electric water heater according to claim 1, wherein a value obtained by multiplying by (N) is added to the number of required power supply time zones (N) in the next calculation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15458189A JP2858788B2 (en) | 1989-06-19 | 1989-06-19 | Operation control method of electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15458189A JP2858788B2 (en) | 1989-06-19 | 1989-06-19 | Operation control method of electric water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0320555A JPH0320555A (en) | 1991-01-29 |
| JP2858788B2 true JP2858788B2 (en) | 1999-02-17 |
Family
ID=15587341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15458189A Expired - Fee Related JP2858788B2 (en) | 1989-06-19 | 1989-06-19 | Operation control method of electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2858788B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6627858B2 (en) | 2000-12-01 | 2003-09-30 | Denso Corporation | Hot-water supply system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5967560B2 (en) * | 2012-08-02 | 2016-08-10 | Toto株式会社 | Electric water heater |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57169532A (en) * | 1981-04-09 | 1982-10-19 | Sekisui Chem Co Ltd | Temperature controller in electric water heater |
| JPS642120Y2 (en) * | 1981-06-09 | 1989-01-18 | ||
| JPS6030943A (en) * | 1983-08-01 | 1985-02-16 | Mitsubishi Electric Corp | Control device of hot-water storage type electric hot-water heater |
| JPS60207851A (en) * | 1984-03-31 | 1985-10-19 | Sekisui Chem Co Ltd | Control device of hot water storage type electric heater |
| JPS60232452A (en) * | 1984-04-27 | 1985-11-19 | Sekisui Chem Co Ltd | Controller of hot water reserving type electric water heater |
| JPS618550A (en) * | 1984-06-21 | 1986-01-16 | Matsushita Electric Ind Co Ltd | Electric water heater utilizing mid-night electric power |
| JPS618553A (en) * | 1984-06-21 | 1986-01-16 | Matsushita Electric Ind Co Ltd | Electric water heater |
| JPS6111552A (en) * | 1984-06-27 | 1986-01-18 | Matsushita Electric Ind Co Ltd | Hot-water reserving type electric water heater |
| JPS6144146U (en) * | 1984-08-22 | 1986-03-24 | シャープ株式会社 | hot water equipment |
| JPS6335904A (en) * | 1986-05-02 | 1988-02-16 | 安座間 弘則 | Snow melting machine |
-
1989
- 1989-06-19 JP JP15458189A patent/JP2858788B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6627858B2 (en) | 2000-12-01 | 2003-09-30 | Denso Corporation | Hot-water supply system |
| DE10158815B4 (en) * | 2000-12-01 | 2007-11-29 | Denso Corp., Kariya | Hot water supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0320555A (en) | 1991-01-29 |
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