JP2926284B2 - Electric water heater - Google Patents
Electric water heaterInfo
- Publication number
- JP2926284B2 JP2926284B2 JP27144191A JP27144191A JP2926284B2 JP 2926284 B2 JP2926284 B2 JP 2926284B2 JP 27144191 A JP27144191 A JP 27144191A JP 27144191 A JP27144191 A JP 27144191A JP 2926284 B2 JP2926284 B2 JP 2926284B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- temperature
- heating element
- water storage
- boiling
- 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 - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 230
- 238000010438 heat treatment Methods 0.000 claims description 150
- 238000009835 boiling Methods 0.000 claims description 56
- 238000001514 detection method Methods 0.000 claims description 13
- 239000008400 supply water Substances 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電気温水器に関し、特
に貯湯タンクを複数本備えた電気温水器の沸き上げ制御
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric water heater, and more particularly, to an electric water heater having a plurality of hot water storage tanks.
【０００２】[0002]
【従来の技術】図１２は従来の電気温水器の沸き上げ制
御装置の全体構成図である。図１３はその主要部の回路
構成図である。図１２において、１は貯湯タンクであ
り、沸き上げ中は高圧力になるため、円筒形状をしてい
る。貯湯タンク下部には発熱体２が装着されている。こ
の発熱体の容量は、深夜電力供給時間（８時間）で一定
温度まで沸き上げるように決められている。例えば、３
７０ｌの温水器において、水温１０℃、沸き上げ温度８
５℃、沸き上げの効率を０．９５、１kWH 当りの発熱量
を８６０とすれば、発熱体の容量Ｐは2. Description of the Related Art FIG. 12 is an overall configuration diagram of a conventional water heater boiling control device. FIG. 13 is a circuit configuration diagram of the main part. In FIG. 12, reference numeral 1 denotes a hot water storage tank, which has a cylindrical shape because high pressure is generated during boiling. A heating element 2 is mounted below the hot water storage tank. The capacity of the heating element is determined so that the heating element is heated to a certain temperature in the midnight power supply time (8 hours). For example, 3
In a 70-liter water heater, the water temperature is 10 ° C and the boiling temperature is 8
Assuming 5 ° C., the boiling efficiency is 0.95, and the calorific value per kWH is 860, the capacity P of the heating element is
【０００３】[0003]
【数１】 (Equation 1)
【０００４】となる。また、電気料金は深夜電力の基本
料金において３．５kW〜４．４kWまでは同一で、４．５
kW以上から高くなるため、一般には料金が同一のゾーン
の最大容量４．４kWが採用されている。[0004] In addition, the electricity rate is the same from 3.5kW to 4.4kW in the basic charge of late night electricity, and it is 4.5
In general, a maximum capacity of 4.4 kW in a zone having the same fee is adopted because the capacity increases from kW or more.
【０００５】３は給水水温及び沸き上げ湯温を測定する
湯温測定手段で、４は沸き上げ湯温を設定する沸き上げ
設定手段である。５は演算手段で、沸き上げ設定手段４
で設定された沸き上げ湯温及び湯温測定手段３の測定湯
温に基づいて通電開始時間を演算する。６は発熱体制御
手段で、演算手段５の演算結果及び湯温測定手段の測定
湯温に基づいて発熱体２のＯＮ／ＯＦＦを制御する。７
は深夜電力用電源で、８は深夜電力の供給の有無を検出
する深夜電力検出手段である。９は沸き上げた湯を取り
出す蛇口である。なお、上記の説明では沸き上げ設定手
段４は、沸き上げ湯温を設定しているが、代りに使用湯
量を設定することもできる。以下、この点について説明
する。電気温水器は貯湯方式のためタンク容量Ｖ１は決
まっている。一般的に使用温度は約４０℃であり、Ｔ
（℃）で沸き上げられた湯の使用可能量Ｖ２は Ｖ２＝Ｖ１×（Ｔ−Ｔｗ）／（４０−Ｔｗ） となる。水温Ｔｗが一定とすれば、使用可能量Ｖ２は沸
き上げ温度Ｔ（℃）によって決まることになる。つま
り、沸き上げ湯温設定は使用温度での湯量設定と同じ機
能を持っている。即ち、沸き上げ設定手段４は、沸き上
げ湯温又は沸き上げ湯温に関連する使用湯量を設定する
ものである。[0005] Reference numeral 3 denotes a hot water temperature measuring means for measuring a feed water temperature and a boiling hot water temperature, and 4 denotes a boiling setting means for setting the boiling hot water temperature. 5 is a calculating means, and a boiling setting means 4
The energization start time is calculated based on the boiling water temperature and the measured hot water temperature of the hot water temperature measuring means 3 set in the step (1). Reference numeral 6 denotes a heating element control unit that controls ON / OFF of the heating element 2 based on the calculation result of the calculation unit 5 and the measured hot water temperature of the hot water temperature measurement unit. 7
Reference numeral 8 denotes a power supply for midnight power, and 8 denotes a midnight power detection means for detecting whether or not the midnight power is supplied. 9 is a faucet for taking out the boiling water. In the above description, the boiling setting means 4 sets the temperature of the hot water, but it is also possible to set the amount of hot water used instead. Hereinafter, this point will be described. Since the electric water heater is a hot water storage system, the tank capacity V1 is determined. Generally, the operating temperature is about 40 ° C. and T
The usable amount V2 of the hot water boiled at (° C.) is V2 = V1 × (T−Tw) / (40−Tw). Assuming that the water temperature Tw is constant, the usable amount V2 is determined by the boiling temperature T (° C.). That is, the setting of the boiling water temperature has the same function as the setting of the amount of hot water at the operating temperature. That is, the boiling setting means 4 sets the boiling water temperature or the amount of hot water used in relation to the boiling water temperature.
【０００６】また、図１３において、１１は制御回路内
のマイクロコンピュータであり、ＣＰＵ１２、時計手段
１０、メモリ１３、入力回路１４、出力回路１５、Ａ／
Ｄ変換器１６及びアナログマルチプレクサ１７から形成
される。１８は発熱体制御回路であり、図１２の発熱体
制御手段６に相当し、抵抗１９，２０、トランジスタ２
１、リレー２２，２３及びダイオード２４，２５から構
成される。In FIG. 13, reference numeral 11 denotes a microcomputer in a control circuit, which includes a CPU 12, a clock means 10, a memory 13, an input circuit 14, an output circuit 15,
It is formed from a D converter 16 and an analog multiplexer 17. A heating element control circuit 18 corresponds to the heating element control means 6 in FIG.
1. It is composed of relays 22 and 23 and diodes 24 and 25.
【０００７】リレー２２のコイルは、一端が正極端子＋
Ｖと接続され、他端がトランジスタ２１を介してＧＮＤ
端子に接続され、トランジスタ２１のベースと抵抗１９
を介して出力回路１５に接続されている。抵抗２０はト
ランジスタ２１のベースとエミッタ間に接続されてい
る。リレー２２の常開接点は、一端が正極端子＋Ｖａと
接続され、他端がリレー２３のコイルを介してＧＮＤ端
子に接続されている。リレー２２及びリレー２３の各コ
イル両端にはダイオード２４，２５が接続されている。
リレー２３の接点は、発熱体２と深夜電力電源７に対し
て直列に接続されている。One end of the coil of the relay 22 has a positive terminal +
V, and the other end is connected to GND via the transistor 21.
Terminal, the base of the transistor 21 and the resistor 19
Is connected to the output circuit 15 via the. The resistor 20 is connected between the base and the emitter of the transistor 21. One end of the normally open contact of the relay 22 is connected to the positive terminal + Va, and the other end is connected to the GND terminal via the coil of the relay 23. Diodes 24 and 25 are connected to both ends of each coil of the relay 22 and the relay 23.
The contact of the relay 23 is connected in series to the heating element 2 and the midnight power supply 7.
【０００８】抵抗２６は可変抵抗からなる沸き上げ設定
手段４と直列に接続され、その両端が正極端子＋ＶとＧ
ＮＤ端子に接続されている。更に、抵抗２６と沸き上げ
設定手段４との接続部はアナログマルチプレクサ１７に
接続されている。抵抗２７はサーミスタからなる温度検
出手段３と直列に接続され、その両端は正極端子＋Ｖと
ＧＮＤ端子に接続されている。更に、抵抗２７と温度検
出手段３との接続部は、アナログマルチプレクサ１７に
接続されている。The resistor 26 is connected in series with the boiling setting means 4 comprising a variable resistor, and both ends thereof are connected to the positive terminal + V and the G terminal.
Connected to ND terminal. Further, the connection between the resistor 26 and the boiling setting means 4 is connected to the analog multiplexer 17. The resistor 27 is connected in series with the temperature detecting means 3 composed of a thermistor, and both ends thereof are connected to the positive terminal + V and the GND terminal. Further, a connection between the resistor 27 and the temperature detecting means 3 is connected to the analog multiplexer 17.
【０００９】２８は深夜電力を検出するための深夜電力
検出回路であり、図１２の深夜電力検出手段８に相当
し、抵抗２９，３０、ダイオード３１及びホトカプラ３
２から構成される。ホトカプラ３２の発光側は、抵抗２
９を介して電源７に直列に接続され、ホトカプラ３２の
発光側の両端にはダイオード３１が並列に接続されてい
る。ホトカプラ３２の受光側の一端は抵抗３０を介して
正極端子＋Ｖに、他端はＧＮＤ端子に接続され、抵抗３
０とホトカプラ３２の受光側との接続部はマイクロコン
ピュータ１１内の入力回路１４に接続されている。Reference numeral 28 denotes a late-night power detection circuit for detecting late-night power, which corresponds to the late-night power detection means 8 in FIG. 12, and includes resistors 29 and 30, a diode 31, and a photocoupler 3.
2 The light emitting side of the photocoupler 32 has a resistor 2
9, a diode 31 is connected in parallel to both ends of the photocoupler 32 on the light emission side. One end on the light receiving side of the photocoupler 32 is connected to the positive terminal + V via the resistor 30 and the other end is connected to the GND terminal.
A connection between the photocoupler 0 and the light receiving side of the photocoupler 32 is connected to an input circuit 14 in the microcomputer 11.
【００１０】次に、従来の電気温水器の沸き上げ制御装
置の動作を図１４を参照しながら説明する。図１４はマ
イクロコンピュータ１１のメモリ１３に記憶された発熱
体制御のフローチャートである。まず、制御用電源を入
れると同時に、深夜電力電源の有無を検出する（ステッ
プ３３）。深夜電源が供給されていれば、時計手段１０
によりタイマーをスタートし、ステップ３５で給水水温
を測定し、ステップ３６で貯湯タンク内の沸き上げ温度
の設定を読み取る。次に、ステップ３７で給水水温から
設定の温度まで沸き上げるために必要な正味通電時間の
演算を行い、ステップ３８で深夜電力供給時間帯のどの
時刻から通電を開始するかを演算する。なお、ステップ
Ｓ３６で読み取る沸き上げ温度は、前述したように使用
温度での湯量を設定したときは、その使用湯量に基づい
て前述の式 Ｖ２＝Ｖ１×（Ｔ−Ｔｗ）／（４０−Ｔｗ） によって求められる沸き上げ温度になる。Next, the operation of the conventional electric water heater boiling control device will be described with reference to FIG. FIG. 14 is a flowchart of the heating element control stored in the memory 13 of the microcomputer 11. First, the control power supply is turned on, and at the same time, the presence or absence of the midnight power supply is detected (step 33). If the midnight power is supplied, the clock means 10
To start the timer, measure the feed water temperature in step 35, and read the setting of the boiling temperature in the hot water storage tank in step 36. Next, in step 37, the net energization time required to raise the temperature from the supply water temperature to the set temperature is calculated, and in step 38, the time at which the energization starts in the midnight power supply time zone is calculated. In addition, the boiling temperature read in step S36 is, when the amount of hot water at the use temperature is set as described above, based on the amount of use hot water, the above-mentioned formula V2 = V1 × (T−Tw) / (40−Tw) To the required boiling temperature.
【００１１】給水水温をＴｗ（℃）、沸き上げ温度をＴ
（℃）、発熱体２の容量をＰ（kW）とすれば、正味通電
時間Ｈ（ｈｒ）はThe feedwater temperature is Tw (° C.) and the boiling temperature is T
(° C.) and the capacity of the heating element 2 is P (kW), the net energization time H (hr) is
【００１２】[0012]
【数２】 (Equation 2)
【００１３】で計算される。深夜電力供給時間は一般に
２３時から翌朝の７時までの８時間であり、通電開始時
間Ｈｐは Ｈｐ＝８−Ｈ となる。このように沸き上げ時間を制御することによ
り、給水水温と湯温設定温度に応じて通電の開始時間が
変わり、深夜電力制度の本来の特徴であるオフピーク時
間帯に沸き上げが行われ、また、沸き上げが深夜電力時
間帯の後半になるため、放熱によるロスがすくなくなる
特徴がある。[0013] is calculated. The midnight power supply time is generally 8 hours from 23:00 to 7:00 the next morning, and the energization start time Hp is Hp = 8−H. By controlling the boiling time in this way, the start time of energization changes according to the feedwater temperature and the set temperature of the hot water, and the boiling is performed during the off-peak hours, which is the original feature of the late-night power system, Since boiling is performed in the latter half of the midnight power time zone, there is a feature that loss due to heat radiation is reduced.
【００１４】次に、マイクロコンピュータ１１内の時計
手段１０により通電開始時刻になったかどうかを判定し
（ステップ３９）、通電開始時刻になったらステップ４
０で発熱体２への通電を開始する。その後、ステップ４
１で貯湯タンク内の湯温を測定し（測定値をＴｍ（℃）
とする）、沸き上げ温度の設定値Ｔ（℃）と湯温の測定
値Ｔｍ（℃）を比較し（ステップ４２）、ＴｍがＴに到
達したら発熱体２をＯＦＦにして（ステップ４３）、一
日の制御は終了し翌日は再びステップ３３から繰り返
す。Next, it is determined by the clock means 10 in the microcomputer 11 whether or not the power supply start time has come (step 39).
At 0, energization of the heating element 2 is started. Then step 4
Measure the hot water temperature in the hot water storage tank in 1 (measured value is Tm (° C)
The set value T (° C.) of the boiling temperature is compared with the measured value Tm (° C.) of the hot water temperature (step 42). When Tm reaches T, the heating element 2 is turned off (step 43). The control for one day is finished, and the next day is repeated from step 33 again.
【００１５】[0015]
【発明が解決しようとする課題】従来の電気温水器は以
上のように、大容量の貯湯タンクに対し１本で沸き上げ
を制御するように構成されているので、円筒形状の温水
器では設置において約１ｍ2 （１ｍ×１ｍ）のスペース
を必要とし、このスペースのない箇所には設置できない
問題点があった。As described above, the conventional electric water heater is configured to control boiling with a single large-capacity hot water storage tank. Requires a space of about 1 m 2 (1 m × 1 m), and there is a problem that it cannot be installed in a place without this space.
【００１６】本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、温水器本体の形状を薄くし、貯湯
タンク１本の円筒形状では設置できないスペースにも設
置でき、設定された沸き上げ温度の湯が確実に得られ、
また、緊急に湯を使いたとき、短時間で設定温度の湯の
使用ができる温水器を提供することを目的とする。The present invention has been made in order to solve the above-mentioned problems, and has a thin water heater main body, which can be installed in a space where a single hot water storage tank cannot be installed in a cylindrical shape. Hot water with a boiling temperature can be obtained reliably,
Another object of the present invention is to provide a water heater that can use hot water at a set temperature in a short time when hot water is used urgently.
【００１７】[0017]
【課題を解決するための手段】本発明の第１発明に係る
電気温水器は、直列に配管され下部にそれぞれ下部発熱
体が設けられた複数の貯湯タンクと、この貯湯タンクの
うち採湯口の近くの貯湯タンクの上部に設けられた上部
発熱体と、沸き上げ湯温と給水水温を検出する温度検出
手段と、沸き上げの湯温を設定する沸き上げ設定手段
と、深夜電力の電源の有無を検出する電源検出手段と、
上記温度検出手段、沸き上げ設定手段及び電源検出手段
の出力に基づいて通電開始時間を演算する演算手段と、
この演算手段により演算された上記通電開始時間に基づ
いて、先ず、上記上部発熱体に通電し、ついで、上記温
度検出手段で検出された温度と上記設定手段で設定され
た設定温度に基づいて、上記採湯口近くの貯湯タンクの
下部発熱体、給水上流側貯湯タンクの下部発熱体に順次
切換えて通電する発熱体制御手段とを備え、上記発熱制
御手段は、沸き上げが完了した部分の湯温に一定温度以
上の湯温降下があったときは、沸き上げ中の上記上部又
は下部発熱体への通電を停止し、湯温低下のあった部分
の上記上部又は下部発熱体に再通電するものである。According to a first aspect of the present invention, there is provided an electric water heater comprising a plurality of hot water storage tanks which are piped in series, each having a lower heating element provided at a lower portion thereof, and a hot water outlet of the hot water storage tank. An upper heating element provided at the top of a nearby hot water storage tank, temperature detecting means for detecting the temperature of the hot water and the temperature of the supply water, hot water setting means for setting the hot water temperature, and the presence or absence of a power supply at midnight. Power detection means for detecting
Calculating means for calculating the energization start time based on the outputs of the temperature detecting means, the boiling setting means and the power detecting means;
Based on the energization start time calculated by the calculating means, first, the upper heating element is energized, and then, based on the temperature detected by the temperature detecting means and the set temperature set by the setting means, Heating element control means for sequentially switching to the lower heating element of the hot water storage tank near the hot water outlet and the lower heating element of the hot water storage tank on the upstream side of the water supply, and energizing the heating element; When the temperature of the hot water drops by more than a certain temperature, the power supply to the upper or lower heating element during boiling is stopped and the upper or lower heating element of the part where the hot water temperature drops is re-energized. It is.
【００１８】第２発明に係る電気温水器は、直列に配管
され下部にそれぞれ下部発熱体が設けられた複数の貯湯
タンクと、この貯湯タンクのうち採湯口の近くの貯湯タ
ンクの上部に設けられた上部発熱体と、沸き上げ湯温と
給水水温を検出する温度検出手段と、沸き上げの湯温を
設定する沸き上げ設定手段と、深夜電力の電源の有無を
検出する電源検出手段と、追い加熱を設定する追い加熱
設定手段と、上記温度検出手段、沸き上げ設定手段及び
電源検出手段の出力に基づいて通電開始時間を演算する
演算手段と、この演算手段により演算された上記通電開
始時間に基づいて、先ず、上記上部発熱体に通電し、つ
いで、上記温度検出手段で検出された温度と上記設定手
段で設定された設定温度に基づいて、上記採湯口近くの
貯湯タンクの下部発熱体、給水上流側貯湯タンクの下部
発熱体に順次切換えて通電する発熱体制御手段とを備
え、電源供給時間内において上記追い加熱が設定された
ときは、上記上部発熱体による加熱を優先させるもので
ある。An electric water heater according to a second aspect of the present invention is provided with a plurality of hot water storage tanks which are piped in series and each of which has a lower heating element at a lower part thereof, and which is provided at an upper part of the hot water storage tank near the hot water outlet among the hot water storage tanks. An upper heating element, a temperature detecting means for detecting the temperature of the hot water and the temperature of the supply water, a heating setting means for setting the temperature of the hot water, and a power detecting means for detecting the presence or absence of the power supply of the late-night power. Additional heating setting means for setting heating, calculating means for calculating the energization start time based on the outputs of the temperature detecting means, boiling setting means and power supply detecting means, and the energizing start time calculated by the calculating means First, the upper heating element is energized, and then, based on the temperature detected by the temperature detecting means and the set temperature set by the setting means, a lower part of the hot water storage tank near the hot water outlet is provided. Heating element control means for sequentially switching the heating element and the lower heating element of the water supply upstream side hot water storage tank to energize, and when the additional heating is set within the power supply time, the heating by the upper heating element is prioritized. Things.
【００１９】[0019]
【作用】本発明の第１発明においては、貯湯タンクを直
列に配管された複数のタンクで構成したから、高さを同
一の貯湯タンクとした場合、１本の貯湯タンクの場合よ
り奥行が薄くなる。また、下部にそれぞれ発熱体が設け
られた複数の貯湯タンクのうち採湯口の近くの貯湯タン
クの上部には上部発熱体を設け、演算手段により通電開
始時間を演算し、その演算結果に基づいて先ず上部発熱
体に通電するから、通電開始時刻後採湯口の近くの湯温
が短時間で設定温度になり、沸き上げが完了した部分の
湯温に一定温度以上の湯温低下のあったときは、沸き上
げ中の発熱体への通電を停止し、湯温低下のあった部分
の発熱体に再通電するから、一定温度以上の湯温低下が
防止される。According to the first aspect of the present invention, since the hot water storage tank is constituted by a plurality of tanks arranged in series, when the height is the same, the depth is thinner than in the case of one hot water storage tank. Become. In addition, an upper heating element is provided at an upper portion of the hot water storage tank near the hot water outlet among a plurality of hot water storage tanks each having a heating element provided at a lower portion, and an energization start time is calculated by a calculation means, and based on the calculation result, First, because the upper heating element is energized, the temperature of the hot water near the hot water outlet reaches the set temperature in a short time after the energization start time, and when the temperature of the hot water in the portion where boiling is completed has dropped by a certain temperature or more. In this method, the power supply to the heating element during boiling is stopped, and the power supply to the heating element in the portion where the water temperature has dropped is re-energized.
【００２０】第２発明においては、追い加熱設定手段を
設けると共に、下部にそれぞれ発熱体が設けられた複数
の貯湯タンクのうち採湯口の近くの貯湯タンクの上部に
は上部発熱体を設け、電源供給時間内において追い加熱
を設定したときは、上部発熱体による加熱を優先させる
から、緊急に湯を使いたいとき、追い加熱を設定すれ
ば、採湯口の近くの湯温が短時間で設定温度になる。In the second aspect of the present invention, additional heating setting means is provided, and an upper heating element is provided at an upper part of a hot water storage tank near a hot water outlet among a plurality of hot water storage tanks each having a heating element provided at a lower part. When additional heating is set within the supply time, priority is given to heating by the upper heating element, so if you want to use hot water urgently, if you set additional heating, the temperature of the hot water near the hot water outlet will quickly reach the set temperature. become.
【００２１】[0021]
【実施例】実施例１． 以下、本発明の実施例１について説明するが、先ずその
基本になる複数本の貯湯タンクを設けたものの構成と動
作について説明する。図１は複数本のタンクを２本とし
た場合について示した温水器の構成を示すブロック図
で、図において、図１２と同一符号は同一または相当部
分を示し、４４は給水が直接入る第１の貯湯タンク、４
５は第１の貯湯タンク４４の上部と直列に接続され、上
部に採湯口を持つ第２の貯湯タンク、４６は第１の貯湯
タンク４４の下部に取付られた第１の発熱体、４７は第
２の貯湯タンク４５の下部に取付られた第２の発熱体で
ある。従来例と同様、貯湯タンクの全容量３７０ｌ、発
熱体の容量を４．４kWに対し、２本で構成する場合は、
第１と第２の貯湯タンクの容量は１８５ｌ（＝３７０／
２）とし、第１の発熱体４６と第２の発熱体４７の容量
は２．２kW（＝４．４／２）とする。例えば、高さを同
一にし貯湯タンクの容量３７０ｌを２本の貯湯タンクで
構成すれば、直径で約７０％の改善ができ、即ち１本の
貯湯タンクの場合の約３０％薄くできることになる。[Embodiment 1] Hereinafter, a first embodiment of the present invention will be described. First, a configuration and an operation of a base provided with a plurality of hot water storage tanks will be described. FIG. 1 is a block diagram showing a configuration of a water heater showing a case where a plurality of tanks are two. In the drawing, the same reference numerals as those in FIG. 12 denote the same or corresponding parts, and reference numeral 44 denotes a first water supply port. Hot water storage tank, 4
5 is a second hot water storage tank connected in series with the upper part of the first hot water storage tank 44 and has a hot water outlet at the upper part, 46 is a first heating element attached to the lower part of the first hot water storage tank 44, 47 is This is a second heating element attached to a lower part of the second hot water storage tank 45. Similar to the conventional example, when the total capacity of the hot water storage tank is 370 l and the capacity of the heating element is 4.4 kW, and the configuration is made of two,
The capacity of the first and second hot water storage tanks is 185 l (= 370 /
2), and the capacities of the first heating element 46 and the second heating element 47 are 2.2 kW (= 4.4 / 2). For example, if the height is the same and the hot water storage tank capacity 370 l is composed of two hot water storage tanks, the diameter can be improved by about 70%, that is, about 30% thinner than a single hot water storage tank.
【００２２】４８は給水水温と湯温を測定する第１の湯
温測定手段、４９は第２の貯湯タンクの湯温を測定する
第２の湯温測定手段、５０は演算手段５と第１の湯温測
定手段４８と第２の湯温測定手段４９の出力に基づいて
第１の発熱体４６と第２の発熱体４７のＯＮ／ＯＦＦを
制御する発熱体制御手段である。Reference numeral 48 denotes first hot water temperature measuring means for measuring the temperature of the supply water and hot water, 49 denotes second hot water temperature measuring means for measuring the hot water temperature of the second hot water storage tank, and 50 denotes the arithmetic means 5 and the first The heating element control means controls ON / OFF of the first heating element 46 and the second heating element 47 based on the outputs of the hot water temperature measuring means 48 and the second hot water temperature measuring means 49.
【００２３】図２は、主要部の回路構成を示す回路図
で、図１２、図１３と同一符号は同一または相当部分を
示し、１８は第１の発熱体制御回路であり、５１は第２
の発熱体のＯＮ／ＯＦＦを制御する第２の発熱体制御回
路であり、構成は第１の発熱体制御回路１８と同一であ
る。５２，５３は抵抗で各々湯温測定手段４８，４９と
直列に接続され、その接続部はマイクロコンピュータ１
１内のアナログマルチプレクサ１７と接続されている。
抵抗５２，５３の他端は正極端子＋Ｖに接続されてい
る。また、湯温測定手段４８，４９の他端は、ＧＮＤ端
子に接続されている。FIG. 2 is a circuit diagram showing a circuit configuration of a main part. The same reference numerals as those in FIGS. 12 and 13 denote the same or corresponding parts, 18 denotes a first heating element control circuit, and 51 denotes a second heating element control circuit.
This is a second heating element control circuit for controlling ON / OFF of the heating element, and the configuration is the same as that of the first heating element control circuit 18. Numerals 52 and 53 are connected in series with the hot water temperature measuring means 48 and 49, respectively.
1 is connected to the analog multiplexer 17.
The other ends of the resistors 52 and 53 are connected to the positive terminal + V. The other ends of the hot water temperature measuring means 48 and 49 are connected to a GND terminal.
【００２４】次に動作について説明する。図３は、図１
及び図２に示す温水器の動作を示すフローチャートで図
１４と同一符号は同一または相当部分を示している。ス
イッチ（図示せず）が入れられることにより制御回路が
動作し、ステップ３３で深夜電力の供給の有無が検出さ
れる。ステップ３９で通電開始時刻になったら、ステッ
プ５４で第１と第２の発熱体に通電を開始し、次に第１
の貯湯タンク側ではステップ５５で湯温測定手段４８に
より湯温を測定する。この測定湯温Ｔｍ１がステップ３
６で読み取った湯温Ｔよりも高いかどうかを判定し（ス
テップ５６）、高くなったらステップ５７で第１の発熱
体４６への通電を停止する。また、ステップ５６で測定
湯温Ｔｍ１が設定湯温Ｔ以下ならステップ５５から繰り
返す。Next, the operation will be described. FIG.
In the flowchart showing the operation of the water heater shown in FIG. 2, the same reference numerals as those in FIG. 14 indicate the same or corresponding parts. When a switch (not shown) is turned on, the control circuit operates, and in step 33, the presence or absence of midnight power supply is detected. When the energization start time comes in step 39, energization of the first and second heating elements is started in step 54, and then the first
In step 55, the hot water temperature is measured by the hot water temperature measuring means 48 in step 55. The measured hot water temperature Tm1 is set in step 3
It is determined whether the temperature is higher than the hot water temperature T read in step 6 (step 56). If the measured hot water temperature Tm1 is equal to or lower than the set hot water temperature T in step 56, the process is repeated from step 55.
【００２５】第１貯湯タンク４４と同様に、ステップ５
４で第２の発熱体への通電が開始されたら、ステップ５
８で湯温測定手段４９により湯温を測定する。この測定
湯温Ｔｍ１がステップ３６で読み取った湯温Ｔよりも高
いかどうかを判定し（ステップ５９）、高くなったらス
テップ６０で第２の発熱体４７への通電を停止する。ま
た、ステップ５９で測定湯温Ｔｍ２が設定湯温Ｔ以下な
らステップ５８から繰り返す。As in the case of the first hot water storage tank 44, step 5
When the power supply to the second heating element is started in step 4, step 5
At step 8, the hot water temperature is measured by the hot water temperature measuring means 49. It is determined whether or not the measured hot water temperature Tm1 is higher than the hot water temperature T read in step 36 (step 59). When the measured hot water temperature Tm1 becomes higher, the power supply to the second heating element 47 is stopped in step 60. If the measured hot water temperature Tm2 is equal to or lower than the set hot water temperature T in step 59, the process is repeated from step 58.
【００２６】図１及び図２に示す温水器は以上のように
構成され、従来１本の貯湯タンクで構成していた貯湯タ
ンクを複数本で構成したため、設置スペースとして薄く
できると共に、各貯湯タンクの下部に取付られた発熱体
容量の合計を従来例と同一にしたため、温水器用配電設
備も同一で、しかも第１の貯湯タンクの給水水温に応じ
て沸き上げが深夜電力時間帯の後半になるようにしたた
め、放熱によるロスが少なくできる特徴がある。The water heater shown in FIGS. 1 and 2 is constructed as described above. Since the hot water storage tank which has conventionally been constituted by one hot water storage tank is constituted by a plurality of hot water storage tanks, it can be made thin as an installation space and each hot water storage tank can be made thin. The total capacity of the heating elements attached to the lower part of the water heater is the same as that of the conventional example, so that the power distribution equipment for the water heater is the same, and the heating is performed in the latter half of the midnight power time according to the temperature of the water supply water in the first hot water storage tank. Thus, there is a feature that the loss due to heat radiation can be reduced.
【００２７】次に、図４、図５、は本発明の第１の実施
例を示す図で、この実施例は図４に示すように、第２の
貯湯タンクの上部に取付られた第３の発熱体６１と、第
３の湯温測定手段６２を設けたものである。図５は、主
要部の回路構成を示す回路図で、６３は抵抗で、第３の
湯温測定手段６２と直列に接続され、その接続部はマイ
クロコンピュータ１１内のアナログマルチプレクサ１７
に接続されている。抵抗６３の他端は正極端子＋Ｖに接
続され、第３の湯温測定手段６２の他端はＧＮＤ端子に
接続されている。６４は、第３の発熱体６１への電源の
供給を制御する制御回路で、１８と同一構成である。本
実施例における第１、第２の発熱体の容量と第３の発熱
体容量は従来例と同一の４．４kWとする。Next, FIGS. 4 and 5 show a first embodiment of the present invention. As shown in FIG. 4, this embodiment includes a third hot water storage tank mounted on a third hot water storage tank. , And a third hot water temperature measuring means 62. FIG. 5 is a circuit diagram showing a circuit configuration of a main part. Reference numeral 63 denotes a resistor, which is connected in series with the third hot water temperature measuring means 62.
It is connected to the. The other end of the resistor 63 is connected to the positive terminal + V, and the other end of the third hot water temperature measuring means 62 is connected to the GND terminal. A control circuit 64 controls the supply of power to the third heating element 61 and has the same configuration as 18. In this embodiment, the capacities of the first and second heating elements and the third heating element are set to 4.4 kW, which is the same as the conventional example.
【００２８】次に第１の実施例の基本となる動作につい
て説明する。図６は、本発明の温水器の基本動作を示す
フローチャートである。スイッチ（図示せず）が入れら
れることにより制御回路が動作し、ステップ３３で深夜
電力の供給の有無が検出される。ステップ３９で通電開
始時刻になったら、ステップ６５で第３の発熱体への通
電を開始し、次にステップ６６で第３の湯温測定手段６
２により湯温Ｔｍ３を測定する。次に、測定した湯温Ｔ
ｍ３がステップ３６で読み取った設定温度Ｔより高くな
ったかどうかを判定し（ステップ６７）、高くなったら
ステップ６８で第３の発熱体をＯＦＦし、第２の発熱体
４７をＯＮする（ステップ６９）。Next, the basic operation of the first embodiment will be described. FIG. 6 is a flowchart showing the basic operation of the water heater of the present invention. When a switch (not shown) is turned on, the control circuit operates, and in step 33, the presence or absence of midnight power supply is detected. When the power supply start time comes at step 39, power supply to the third heating element is started at step 65, and then at step 66 the third hot water temperature measuring means 6
2, the hot water temperature Tm3 is measured. Next, the measured hot water temperature T
It is determined whether or not m3 is higher than the set temperature T read in step 36 (step 67). If it becomes higher, the third heating element is turned off and the second heating element 47 is turned on in step 68 (step 69). ).
【００２９】次に、第２の湯温測定手段４９により湯温
Ｔｍ２を測定し（ステップ７０）、この湯温Ｔｍ２がス
テップ３６で読み取った設定温度Ｔより高くなったかど
うかを判定し（ステップ７１）、高くなったらステップ
７２で第２の発熱体をＯＦＦし、第１の発熱体４６をＯ
Ｎする（ステップ７３）。次に、第１の湯温測定手段４
８により湯温Ｔｍ１を測定し（ステップ７４）、この湯
温Ｔｍ１がステップ３６で読み取った設定温度Ｔより高
くなったかどうかを判定し（ステップ７５）、高くなっ
たらステップ７６で第１の発熱体をＯＦＦする。ステッ
プ７６が終了したら当日の沸き上げ制御は停止し、翌日
の沸き上げ制御はステップ３３から再び繰り返される。Next, the hot water temperature Tm2 is measured by the second hot water temperature measuring means 49 (step 70), and it is determined whether the hot water temperature Tm2 has become higher than the set temperature T read in step 36 (step 71). ), When it becomes high, the second heating element is turned off in step 72 and the first heating element 46 is turned off.
N (step 73). Next, the first hot water temperature measuring means 4
8, the hot water temperature Tm1 is measured (step 74), and it is determined whether or not the hot water temperature Tm1 is higher than the set temperature T read in step 36 (step 75). Is turned off. When step 76 is completed, the boiling control of the day is stopped, and the boiling control of the next day is repeated from step 33 again.
【００３０】第１の実施例は、以上のように各発熱体容
量を従来例と同一の４．４kWの容量で構成し、沸き上げ
の順序を第３の発熱体から行い、次に第２の発熱体で沸
き上げ、最後に第１の発熱体で沸き上げるように順番を
設け、第２の貯湯タンク４５の上部から沸き上げるた
め、例えば第３の発熱体の取付位置を第２の貯湯タンク
の上部から５０ｌとすれば、この５０ｌを沸き上げるた
めの時間ｔ１は、In the first embodiment, as described above, each heating element has a capacity of 4.4 kW, which is the same as that of the conventional example, and the order of boiling is performed from the third heating element. In order to boil from the top of the second hot water storage tank 45, for example, the mounting position of the third heating element is changed to the second hot water storage. Assuming 50 l from the top of the tank, the time t1 for boiling this 50 l is:
【００３１】[0031]
【数３】 (Equation 3)
【００３２】となり、従来例では８時間かかるのに本発
明では約１時間となり、短時間で採湯できる特徴があ
る。In the present invention, it takes about one hour, whereas the conventional example takes eight hours.
【００３３】次に、本発明の第１の実施例の動作を示す
図７のフローチャートにより、動作を説明する。図７で
７７は、第３の湯温測定手段６２の測定温度Ｔｍ３が湯
温設定手段４の設定温度Ｔより一定温度、例えば１０℃
以上降下したかどうかを判定するステップで、降下して
いるなら第２の貯湯タンク４５の下部に取付られている
第２の発熱体への通電を停止し（ステップ７２）、ステ
ップ６５から繰り返す。ステップ７７で第３の湯温測定
手段６２が設定温度Ｔより１０℃以上降下していないな
ら、ステップ７１へ移る。Next, the operation will be described with reference to the flowchart of FIG. 7 showing the operation of the first embodiment of the present invention. In FIG. 7, 77 indicates that the measured temperature Tm3 of the third hot water temperature measuring means 62 is a fixed temperature, for example, 10 ° C., from the set temperature T of the hot water temperature setting means 4.
In the step of determining whether or not the vehicle has descended, if the vehicle has descended, the power supply to the second heating element attached to the lower part of the second hot water storage tank 45 is stopped (step 72), and the processing is repeated from step 65. If the third hot water temperature measuring means 62 has not fallen by more than 10 ° C. from the set temperature T in step 77, the process proceeds to step 71.
【００３４】７８は、第２の湯温測定手段４９の測定温
度Ｔｍ２が湯温設定手段４の設定温度Ｔより一定温度、
例えば１０℃以上降下したかどうかを判定するステップ
で、降下しているなら第１の貯湯タンク４４の下部に取
付られている第１の発熱体への通電を停止し（ステップ
７６）、ステップ６９から繰り返す。ステップ７８で第
２の湯温測定手段４９が設定温度Ｔより１０℃以上降下
していないなら、ステップ７７ａへ移る。ステップ７７
ａで、Ｔｍ３がＴより一定温度（１０℃）以上降下した
かどうかを判定し、降下しているなら、第１の発熱体へ
の通電を停止し、ステップ６５から繰り返す。降下して
いないならステップ７５へ移る。Reference numeral 78 indicates that the measured temperature Tm2 of the second hot water temperature measuring means 49 is a constant temperature from the set temperature T of the hot water temperature setting means 4,
For example, in the step of determining whether the temperature has dropped by 10 ° C. or more, if the temperature has dropped, the power supply to the first heating element attached to the lower part of the first hot water storage tank 44 is stopped (step 76), and step 69 Repeat from If the second hot water temperature measuring means 49 has not fallen by more than 10 ° C. from the set temperature T in step 78, the process proceeds to step 77a. Step 77
In a, it is determined whether or not Tm3 has dropped by a certain temperature (10 ° C.) or more from T. If the temperature has dropped, the power supply to the first heating element is stopped, and the process is repeated from step 65. If it has not descended, the process proceeds to step 75.
【００３５】以上のように、採湯口に近い第２の貯湯タ
ンク４５の上部から沸き上げを開始し、順次下部、第１
の貯湯タンクへと沸き上げ、短時間に設定の温度の湯が
得られると共に、沸き上げ中に採湯があり沸き上げた湯
が使用されたとしても、沸き上げが完了した部分の湯温
を各湯温測定手段６２，４９が測定し、一定温度降下し
たら再度沸き上げるようにしたので、深夜電力供給時間
帯内で設定された沸き上げ温度Ｔの湯温が確実に得られ
る特徴がある。As described above, boiling is started from the upper part of the second hot water storage tank 45 close to the hot water supply port, and the lower part and the first part are sequentially started.
The hot water of the set temperature is obtained in a short time. Each of the hot water temperature measuring means 62 and 49 measures the temperature, and when the temperature drops, the water is heated again, so that the hot water temperature of the boiling temperature T set within the midnight power supply time zone is obtained reliably.
【００３６】実施例２． 図８，図９，図１０は本発明の第３の実施例を示す図
で、この実施例は図８に示すように、第３の発熱体６１
を任意に優先して沸き上げの設定ができる追い加熱設定
手段７９を設けたものである。図９は第３の実施例の主
要部の回路図であり、８０は追い加熱設定手段７９に相
当するスイッチで、８１は抵抗である。各々直列に接続
され、その接続部はマイクロコンピュータ１１内の入力
回路１４に接続されている。抵抗８１の他端は正極端子
＋Ｖに接続され、スイッチ８０の他端はＧＮＤ端子に接
続されている。Embodiment 2 FIG. FIGS. 8, 9 and 10 show a third embodiment of the present invention. As shown in FIG.
Is provided with a follow-up heating setting means 79 which can set the boiling-up with any priority. FIG. 9 is a circuit diagram of a main part of the third embodiment. Reference numeral 80 denotes a switch corresponding to the additional heating setting means 79, and reference numeral 81 denotes a resistor. Each is connected in series, and the connection part is connected to the input circuit 14 in the microcomputer 11. The other end of the resistor 81 is connected to the positive terminal + V, and the other end of the switch 80 is connected to the GND terminal.
【００３７】図１０は本発明の第３の実施例の動作を示
すフローチャートである。第１及び第２の発熱体の容量
を図１及び図２に示す温水器と同様２．２kWとする場合
について示す。図１０で、ステップ８２は追い加熱設定
手段７９に相当するスイッチ８０が設定されているかど
うかを判定するステップである。ステップ８２で追い加
熱が設定されているなら、第３の発熱体での沸き上げを
優先的に行い、次に第１及び第２の発熱体による沸き上
げを行う。第１及び第２の発熱体での沸き上げ中に追い
加熱が設定されているなら、第１及び第２の沸き上げを
停止し第３の発熱体での沸き上げを優先的に行うように
している。FIG. 10 is a flowchart showing the operation of the third embodiment of the present invention. The case where the capacity of the first and second heating elements is 2.2 kW as in the water heater shown in FIGS. 1 and 2 will be described. In FIG. 10, step 82 is a step for determining whether or not the switch 80 corresponding to the follow-up heating setting means 79 has been set. If the additional heating is set in step 82, the boiling by the third heating element is preferentially performed, and then the boiling by the first and second heating elements is performed. If the additional heating is set during the heating by the first and second heating elements, the first and second heating is stopped and the heating by the third heating element is preferentially performed. ing.
【００３８】実施例３． 図１１は、本発明の第３の実施例の動作を示すフローチ
ャートである。第１及び第２の発熱体の容量を第１の実
施例と同様４．４kWとし、沸き上げの順序を第３の発熱
体から行い、第２、第１の発熱体と順番に沸き上げ、沸
き上げ中に追い加熱設定があったら、沸き上げ中の発熱
体への電源供給を停止し、第３の発熱体による沸き上げ
から再度繰り返すようにしている。第２と第３の実施例
では、緊急に湯を使いたい時は、追い加熱の設定が有る
場合だけ第３の発熱体により第２のタンク上部の沸き上
げを優先させたため、短時間で湯の使用ができる特徴が
ある。Embodiment 3 FIG. FIG. 11 is a flowchart showing the operation of the third embodiment of the present invention. The capacity of the first and second heating elements is set to 4.4 kW as in the first embodiment, the order of boiling is performed from the third heating element, and the boiling is performed in the order of the second and first heating elements. If the additional heating is set during the heating, the power supply to the heating element during the heating is stopped, and the heating is repeated again from the third heating element. In the second and third embodiments, when it is desired to use hot water urgently, the third heating element gives priority to the heating of the upper portion of the second tank only when additional heating is set. There is a feature that can be used.
【００３９】[0039]
【発明の効果】本発明の第１発明においては、直列に配
管され下部にそれぞれ下部発熱体が設けられた複数の貯
湯タンクと、この貯湯タンクのうち採湯口の近くの貯湯
タンクの上部に設けられた上部発熱体と、沸き上げ湯温
と給水水温を検出する温度検出手段と、沸き上げの湯温
を設定する沸き上げ設定手段と、深夜電力の電源の有無
を検出する電源検出手段と、上記温度検出手段、沸き上
げ設定手段及び電源検出手段の出力に基づいて通電開始
時間を演算する演算手段と、この演算手段により演算さ
れた上記通電開始時間に基づいて、先ず、上記上部発熱
体に通電し、ついで、上記温度検出手段で検出された温
度と上記設定手段で設定された設定温度に基づいて、上
記採湯口近くの貯湯タンクの下部発熱体、給水上流側貯
湯タンクの下部発熱体に順次切換えて通電する発熱体制
御手段とを備え、上記発熱制御手段は、沸き上げが完了
した部分の湯温に一定温度以上の湯温降下があったとき
は、沸き上げ中の上記上部又は下部発熱体への通電を停
止し、湯温低下のあった部分の上記上部又は下部発熱体
に再通電するので、１本の貯湯タンクの場合より奥行が
薄くなり、貯湯タンク１本の円筒形状では設置できない
スペースにも設置できる。また、極端な湯温定低下が防
止され、設定された沸き上げ温度の湯が確実に得られ
る。According to the first aspect of the present invention, there are provided a plurality of hot water storage tanks which are piped in series and each of which has a lower heating element at a lower portion thereof, and a plurality of the hot water storage tanks are provided at an upper portion of the hot water storage tank near a hot water outlet. The upper heating element, the temperature detection means for detecting the temperature of the hot water and the temperature of the supply water, the heating setting means for setting the temperature of the hot water, and the power detection means for detecting the presence or absence of the power supply of late-night power, Calculating means for calculating an energization start time based on the outputs of the temperature detection means, the boiling setting means and the power supply detection means; and based on the energization start time calculated by the calculation means, first, the upper heating element Energized, and then, based on the temperature detected by the temperature detecting means and the set temperature set by the setting means, the lower heating element of the hot water storage tank near the hot water outlet and the lower heating element of the hot water supply upstream side hot water storage tank. Heating element control means for sequentially switching and energizing the body, wherein the heat generation control means, when there is a drop in the temperature of the hot water in the portion where boiling is completed at a certain temperature or higher, the upper portion during the boiling. Alternatively, the power supply to the lower heating element is stopped, and the upper or lower heating element in the portion where the temperature of the hot water has dropped is re-energized. Therefore, the depth becomes thinner than in the case of one hot water storage tank, and the cylinder of one hot water storage tank is used. It can be installed in a space that cannot be installed with the shape. Further, the temperature of the hot water is prevented from being extremely lowered, and hot water having the set boiling temperature can be reliably obtained.
【００４０】第２発明に係る電気温水器は、直列に配管
され下部にそれぞれ下部発熱体が設けられた複数の貯湯
タンクと、この貯湯タンクのうち採湯口の近くの貯湯タ
ンクの上部に設けられた上部発熱体と、沸き上げ湯温と
給水水温を検出する温度検出手段と、沸き上げの湯温を
設定する沸き上げ設定手段と、深夜電力の電源の有無を
検出する電源検出手段と、追い加熱を設定する追い加熱
設定手段と、上記温度検出手段、沸き上げ設定手段及び
電源検出手段の出力に基づいて通電開始時間を演算する
演算手段と、この演算手段により演算された上記通電開
始時間に基づいて、先ず、上記上部発熱体に通電し、つ
いで、上記温度検出手段で検出された温度と上記設定手
段で設定された設定温度に基づいて、上記採湯口近くの
貯湯タンクの下部発熱体、給水上流側貯湯タンクの下部
発熱体に順次切換えて通電する発熱体制御手段とを備
え、電源供給時間内において上記追い加熱が設定された
ときは、上記上部発熱体による加熱を優先させるので、
簡単な構成により、緊急に湯を使いたとき、追い加熱を
設定すれば、短時間で設定温度の湯の使用ができる。An electric water heater according to a second aspect of the present invention is provided with a plurality of hot water storage tanks which are piped in series and each of which has a lower heating element provided at a lower portion thereof, and which is provided at an upper portion of the hot water storage tank near the hot water outlet among the hot water storage tanks. An upper heating element, a temperature detecting means for detecting the temperature of the hot water and the temperature of the supply water, a heating setting means for setting the temperature of the hot water, and a power detecting means for detecting the presence or absence of the power supply of the late-night power. Additional heating setting means for setting heating, calculating means for calculating the energization start time based on the outputs of the temperature detecting means, boiling setting means and power supply detecting means, and the energizing start time calculated by the calculating means First, the upper heating element is energized, and then, based on the temperature detected by the temperature detecting means and the set temperature set by the setting means, a lower part of the hot water storage tank near the hot water outlet is provided. Heating element control means for sequentially switching the heating element and the lower heating element of the water supply upstream side hot water storage tank to energize, and when the additional heating is set within the power supply time, the heating by the upper heating element is prioritized. So
With a simple configuration, when hot water is used urgently, if additional heating is set, hot water at the set temperature can be used in a short time.
【図１】 本発明の基本となる構成例を示すブロック図
である。FIG. 1 is a block diagram showing an example of a basic configuration of the present invention.
【図２】 図１に示す温水器の主要部の回路構成を示す
回路図である。FIG. 2 is a circuit diagram showing a circuit configuration of a main part of the water heater shown in FIG.
【図３】 図１に示す温水器の動作を示すフローチャー
トである。FIG. 3 is a flowchart showing the operation of the water heater shown in FIG.
【図４】 本発明の第１の実施例を示すブロック図であ
る。FIG. 4 is a block diagram showing a first embodiment of the present invention.
【図５】 図４に示す実施例の主要部の回路構成を示す
回路図である。FIG. 5 is a circuit diagram showing a circuit configuration of a main part of the embodiment shown in FIG.
【図６】 図４に示す実施例の基本動作を示すフローチ
ャートである。6 is a flowchart showing a basic operation of the embodiment shown in FIG.
【図７】 本発明の第１の実施例の動作を示すフローチ
ャートである。FIG. 7 is a flowchart showing the operation of the first embodiment of the present invention.
【図８】 本発明の第２の実施例を示すブロック図であ
る。FIG. 8 is a block diagram showing a second embodiment of the present invention.
【図９】 図８に示す実施例の主要部の回路構成を示す
回路図である。9 is a circuit diagram showing a circuit configuration of a main part of the embodiment shown in FIG.
【図１０】 図８に示す実施例の動作を示すフローチャ
ートである。FIG. 10 is a flowchart showing the operation of the embodiment shown in FIG.
【図１１】 本発明の第３の実施例の動作を示すフロー
チャートである。FIG. 11 is a flowchart showing the operation of the third embodiment of the present invention.
【図１２】 従来の電気温水器の構成を示すブロック図
である。FIG. 12 is a block diagram showing a configuration of a conventional electric water heater.
【図１３】 従来の電気温水器の主要部の回路構成を示
す回路図である。FIG. 13 is a circuit diagram showing a circuit configuration of a main part of a conventional electric water heater.
【図１４】 従来の電気温水器の動作を示すフローチャ
ートである。FIG. 14 is a flowchart showing the operation of a conventional electric water heater.
４ 沸き上げ設定手段、５ 演算手段、７ 深夜電力電
源、８ 電源検出手段、４４ 第１の貯湯タンク、４５
第２の貯湯タンク、４６ 第１の発熱体、４７ 第２
の発熱体、４８ 第１の湯温測定手段、４９ 第２の湯
温測定手段、５０ 発熱体制御手段、６１ 第３の発熱
体、６２ 第３の湯温測定手段、７９追い加熱設定手
段。4 Boiling setting means, 5 Calculation means, 7 Midnight power supply, 8 Power supply detection means, 44 First hot water storage tank, 45
2nd hot water storage tank, 46 1st heating element, 47 2nd
Heating element, 48 first hot water temperature measuring means, 49 second hot water temperature measuring means, 50 heating element control means, 61 third heating element, 62 third hot water temperature measuring means, 79 follow-up heating setting means.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−195860（ＪＰ，Ａ) 特開 平２−242044（ＪＰ，Ａ) 特開 平２−161257（ＪＰ，Ａ) 特開 昭57−166443（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) F24H 1/18 302 F24H 1/18 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-195860 (JP, A) JP-A-2-2422044 (JP, A) JP-A-2-161257 (JP, A) JP-A Sho 57- 166443 (JP, A) (58) Field surveyed (Int. Cl. 6 , DB name) F24H 1/18 302 F24H 1/18
Claims (2)
体が設けられた複数の貯湯タンクと、 この貯湯タンクのうち採湯口の近くの貯湯タンクの上部
に設けられた上部発熱体と、 沸き上げ湯温と給水水温を検出する温度検出手段と、 沸き上げの湯温を設定する沸き上げ設定手段と、 深夜電力の電源の有無を検出する電源検出手段と、 上記温度検出手段、沸き上げ設定手段及び電源検出手段
の出力に基づいて通電開始時間を演算する演算手段と、 この演算手段により演算された上記通電開始時間に基づ
いて、先ず、上記上部発熱体に通電し、ついで、上記温
度検出手段で検出された温度と上記設定手段で設定され
た設定温度に基づいて、上記採湯口近くの貯湯タンクの
下部発熱体、給水上流側貯湯タンクの下部発熱体に順次
切換えて通電する発熱体制御手段とを備え、 上記発熱制御手段は、沸き上げが完了した部分の湯温に
一定温度以上の湯温降下があったときは、沸き上げ中の
上記上部又は下部発熱体への通電を停止し、湯温低下の
あった部分の上記上部又は下部発熱体に再通電すること
を特徴とする電気温水器。1. A plurality of hot water storage tanks which are piped in series and each of which has a lower heating element at a lower part thereof, an upper heating element provided at an upper part of the hot water storage tank near a hot water outlet among the hot water storage tanks, temperature detecting means for detecting the water temperature and water temperature, and boiling setting means for setting the hot water boiling temperature, and power detection means for detecting whether power of midnight power, the upper Symbol temperature detecting means, boiling Calculating means for calculating the energization start time based on the outputs of the setting means and the power supply detection means; based on the energization start time calculated by the calculation means, first, the upper heating element is energized; Based on the temperature detected by the detecting means and the set temperature set by the setting means, the lower heating element of the hot water storage tank near the hot water supply port and the lower heating element of the hot water storage tank on the upstream side of the water supply are sequentially switched and energized. A heating element control means, wherein when the temperature of the hot water in the portion where the boiling has been completed has a temperature drop of a certain temperature or more, the heat is supplied to the upper or lower heating element during the heating. An electric water heater characterized in that the heater is stopped and the upper or lower heating element in the portion where the hot water temperature has dropped is re-energized.
体が設けられた複数の貯湯タンクと、 この貯湯タンクのうち採湯口の近くの貯湯タンクの上部
に設けられた上部発熱体と、 沸き上げ湯温と給水水温を検出する温度検出手段と、 沸き上げの湯温を設定する沸き上げ設定手段と、 深夜電力の電源の有無を検出する電源検出手段と、 追い加熱を設定する追い加熱設定手段と、 上記温度検出手段、沸き上げ設定手段及び電源検出手段
の出力に基づいて通電開始時間を演算する演算手段と、 この演算手段により演算された上記通電開始時間に基づ
いて、先ず、上記上部発熱体に通電し、ついで、上記温
度検出手段で検出された温度と上記設定手段で設定され
た設定温度に基づいて、上記採湯口近くの貯湯タンクの
下部発熱体、給水上流側貯湯タンクの下部発熱体に順次
切換えて通電する発熱体制御手段とを備え、 電源供給時間内において上記追い加熱が設定されたとき
は、上記上部発熱体による加熱を優先させることを特徴
とする電気温水器。2. A plurality of hot water storage tanks which are piped in series and each of which has a lower heating element at a lower part thereof, an upper heating element provided at an upper part of the hot water storage tank near a hot water outlet among the hot water storage tanks, Temperature detection means for detecting the temperature of hot water and supply water, boiling setting means for setting the temperature of the hot water, power detection means for detecting the presence or absence of a power supply for midnight power, and follow-up setting means for setting follow-up heating When, a calculating means for calculating the power distribution start time based on the above output SL temperature detecting means, the boiling setting means and the power detecting means, based on the calculated the energization start time by the calculation means, first of all, the The upper heating element is energized, and then, based on the temperature detected by the temperature detecting means and the set temperature set by the setting means, the lower heating element of the hot water storage tank near the hot water outlet, the upstream water supply of the water supply. A heating element control means for sequentially switching to a lower heating element of the tank and energizing the heating element, wherein when the additional heating is set within the power supply time, the heating by the upper heating element is prioritized. vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27144191A JP2926284B2 (en) | 1991-10-18 | 1991-10-18 | Electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27144191A JP2926284B2 (en) | 1991-10-18 | 1991-10-18 | Electric water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05106915A JPH05106915A (en) | 1993-04-27 |
| JP2926284B2 true JP2926284B2 (en) | 1999-07-28 |
Family
ID=17500069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27144191A Expired - Fee Related JP2926284B2 (en) | 1991-10-18 | 1991-10-18 | Electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2926284B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180087027A (en) * | 2017-01-24 | 2018-08-01 | 와산업 주식회사 | Apparatus for control fluid temperature |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0816551B2 (en) * | 1989-12-26 | 1996-02-21 | 積水化学工業株式会社 | Reheating control device in hot water supply device |
-
1991
- 1991-10-18 JP JP27144191A patent/JP2926284B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180087027A (en) * | 2017-01-24 | 2018-08-01 | 와산업 주식회사 | Apparatus for control fluid temperature |
| KR101942057B1 (en) * | 2017-01-24 | 2019-01-24 | 와산업 주식회사 | Apparatus for control fluid temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05106915A (en) | 1993-04-27 |
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