JPH0263142B2 - - Google Patents
Info
- Publication number
- JPH0263142B2 JPH0263142B2 JP57186462A JP18646282A JPH0263142B2 JP H0263142 B2 JPH0263142 B2 JP H0263142B2 JP 57186462 A JP57186462 A JP 57186462A JP 18646282 A JP18646282 A JP 18646282A JP H0263142 B2 JPH0263142 B2 JP H0263142B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- water temperature
- temperature
- water
- heating element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
- F24D19/1054—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses a heat pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/174—Supplying heated water with desired temperature or desired range of temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/176—Improving or maintaining comfort of users
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/246—Water level
- F24H15/248—Water level of water storage tanks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/355—Control of heat-generating means in heaters
- F24H15/37—Control of heat-generating means in heaters of electric heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/40—Control of fluid heaters characterised by the type of controllers
- F24H15/486—Control of fluid heaters characterised by the type of controllers using timers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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)
- 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 この発明は電気温水器に関するものである。[Detailed description of the invention] Industrial applications This invention relates to an electric water heater.
従来例の構成とその問題点
第１図および第２図において、従来のヒートポ
ンプ給湯機（たとえば特開昭57−122233号、同57
−122255号）は貯湯タンク１の下部の水の流出口
２、循環ポンプ３、熱交換器４、および貯湯タン
ク１の上部の流入口５を経由した循環路６を形成
し、一方熱交換器４、膨張弁７、蒸発器８および
圧縮器９を経由したヒートポンプサイクル路をも
つヒートポンプ熱源を備えた構造である。フアン
１０は外気を導入するために蒸発器の近傍に設け
ている。１１はヒートポンプ熱源機の運転を制御
する水温検知センサ、１２は沸上温度を検知する
沸上温度検知センサである。１３は発熱体、１４
は沸上温度を任意に可変設定する可変抵抗器であ
る。1 and 2, conventional heat pump water heaters (for example, JP-A-57-122233, JP-A-57-122233;
-122255) forms a circulation path 6 via the water outlet 2 at the bottom of the hot water storage tank 1, the circulation pump 3, the heat exchanger 4, and the inlet 5 at the top of the hot water storage tank 1; 4. The structure includes a heat pump heat source having a heat pump cycle path via an expansion valve 7, an evaporator 8, and a compressor 9. A fan 10 is provided near the evaporator to introduce outside air. 11 is a water temperature detection sensor that controls the operation of the heat pump heat source device, and 12 is a boiling temperature detection sensor that detects the boiling temperature. 13 is a heating element, 14
is a variable resistor that can arbitrarily set the boiling temperature.
ヒートポンプ熱源は外気の熱を吸収して熱交換
器４で熱交換し水を湯にかえるものでその沸上げ
温度は約55℃に達するようにしている。またその
効率は水温20℃付近ではCOP（成績係数）３以上
である。したがつて370の貯湯タンク１内の水
をヒートポンプのみで55℃まで沸き上げると、そ
の通電時間は1300Wの入力で約３時間程度で沸き
上げることができ、一般の発熱体式電気温水器に
比べると極めて省エネルギ効果の高い給湯機を提
供するものであり、さらに発熱体１３に通電すれ
ば可変抵抗器１４で設定した温度まで高温の湯を
沸かすことができる。このようにこの給湯機はヒ
ートポンプ熱源をまず運転して、その後発熱体１
３に通電するシリーズ運転を行うようにしてお
り、しかもこれらの運転は全て深夜電力を利用す
るものでその通電時間帯内に所望の温度に沸上げ
てしまおうとするものである。なお、100V電源
の昼間電力で貯湯タンク１内の防食を昼夜関係な
く行つている。また可変抵抗器１４はユーザが任
意に設定するもので約55℃〜85℃までに可変する
ことが可能である。 The heat pump heat source absorbs heat from the outside air and exchanges the heat with the heat exchanger 4 to turn water into hot water, and its boiling temperature is set to reach approximately 55°C. In addition, its efficiency is COP (coefficient of performance) of 3 or more at water temperatures around 20°C. Therefore, if you boil the water in the hot water storage tank 1 of a 370 to 55℃ using only a heat pump, it will take about 3 hours with an input of 1300W, which is much faster than a general heating element type electric water heater. This provides a water heater with an extremely high energy saving effect, and furthermore, by energizing the heating element 13, hot water can be boiled to a temperature set by the variable resistor 14. In this way, this water heater first operates the heat pump heat source, and then operates the heating element 1.
In addition, all of these operations utilize late-night electricity and are intended to raise the temperature to a desired temperature within the energization time period. Note that corrosion protection inside the hot water storage tank 1 is carried out day and night using daytime electricity from a 100V power source. Further, the variable resistor 14 is arbitrarily set by the user and can be varied from about 55°C to 85°C.
さて、この給湯機の動作をさらに詳述する。す
なわちいま仮に85℃に可変抵抗器１４を設定して
電源100Vおよび深夜電力の200Vが投入される
と、第２図において沸上温度検知センサ１２によ
り湯温を検知して85℃以下であれば沸上検知器１
２ａよりリレーRy３に信号を出し、200V電源に
直列に接続された負荷接点Ry３′が閉路になる。
そのとき水温検知センサ１１によつても水温を検
知して設定温度たとえば35℃以下であれば水温検
知部１１ａより切換手段のリレーRY1に信号を出
し、リレーRy２、圧縮機９、フアンモータ１０
に直列に接続した負荷接点Ry１−１が閉路にな
る。また接点Ry１−１と逆接点関係にあるRy１
−２は開路となる。これによりリレーRy２に電
流が流れ、100V電源のポンプ３に直列に接続し
たリレーRy２の負荷接点Ry２′も閉路になる。
以上の状態が瞬時に行われ循環ポンプ３、圧縮機
９、フアンモータ１０が運転を開始するが、発熱
体１３は通電されない。循環ポンプ３によつて貯
湯タンク１の下部より水が吸出され循環路６を第
１図の矢印方向へ循環する一方、ヒートポンプ熱
源はヒートポンプサイクルを第１図の矢印方向へ
循環し、外気より導入した熱を熱交換器４で水に
熱交換し、流入口５より貯湯タンク１内に約55℃
の湯を流入させる。この運転をつづけ貯湯タンク
１の下方まで湯が達すると、循環路６に設けたセ
ンサ１１付近の湯温が約35℃に達しリレーRy１
の信号を停止する。このため負荷接点Ry１−１
が開路になり、リレーRy２の停止により負荷接
点Ry２′も開路になるので、圧縮機９、フアンモ
ータ１０および循環ポンプ３がそれぞれ停止しヒ
ートポンプ熱源機の機能停止になる。一方負荷接
点Ry１−２の接点Ry１−１の逆接点のため閉路
となり発熱体１３に通電され85℃までさらにタン
ク内の湯が熱される。そして初期設定85℃に達す
ると湯上温度検知センサ１２が温度を検知しリレ
ーRy３の信号を停止するため、負荷接点Ry３′
は開路となり、発熱体１３への通電も停止され、
沸上げ完了となる。 Now, the operation of this water heater will be explained in more detail. In other words, if the variable resistor 14 is set to 85°C and a 100V power supply and 200V late-night power are turned on, the boiling temperature sensor 12 detects the water temperature in Fig. 2 and if it is below 85°C, Boiling detector 1
2a sends a signal to relay Ry3, and the load contact Ry3' connected in series to the 200V power supply is closed.
At this time, the water temperature detection sensor 11 also detects the water temperature, and if the set temperature is lower than the set temperature, for example, 35°C, the water temperature detection section 11a outputs a signal to the relay RY 1 of the switching means, and the relay Ry 2, the compressor 9, and the fan motor 10 are activated.
The load contact Ry1-1 connected in series with is closed. Also, Ry1, which has a reverse contact relationship with contact Ry1-1
-2 becomes an open circuit. As a result, current flows through the relay Ry2, and the load contact Ry2' of the relay Ry2 connected in series to the pump 3 of the 100V power supply is also closed.
The above state is instantaneously performed, and the circulation pump 3, compressor 9, and fan motor 10 start operating, but the heating element 13 is not energized. Water is sucked out from the lower part of the hot water storage tank 1 by the circulation pump 3 and circulated through the circulation path 6 in the direction of the arrow in Figure 1, while the heat pump heat source circulates the heat pump cycle in the direction of the arrow in Figure 1 and introduced from outside air. The heat is exchanged with water in the heat exchanger 4, and the temperature reaches approximately 55℃ from the inlet 5 into the hot water storage tank 1.
Let the hot water flow in. When this operation continues and the hot water reaches the bottom of the hot water storage tank 1, the temperature of the hot water near the sensor 11 installed in the circulation path 6 reaches approximately 35℃, and the relay Ry1
stop signal. Therefore, load contact Ry1-1
is opened, and as the relay Ry2 is stopped, the load contact Ry2' is also opened, so the compressor 9, the fan motor 10, and the circulation pump 3 are stopped, and the heat pump heat source device stops functioning. On the other hand, the load contact Ry1-2 is a reverse contact of the contact Ry1-1, so the circuit is closed and the heating element 13 is energized, further heating the hot water in the tank to 85°C. When the initial setting of 85°C is reached, the hot water top temperature detection sensor 12 detects the temperature and stops the signal of relay Ry3, so load contact Ry3'
becomes an open circuit, and energization to the heating element 13 is also stopped.
Boiling is complete.
以上のようにこのヒートポンプ給湯機は、深夜
電力通電時間帯８時間内でヒートポンプを優先的
に運転し、必要に応じて発熱体１４に通電する方
式により省エネルギ効果を発揮することができ、
夏季冬期において必要な給湯負荷に応じて沸上げ
温度を効果的に切換えて使用すると一般の電気温
水器に比べ年間約40％以上の省エネルギ効果とな
るものである。 As described above, this heat pump water heater can exhibit an energy saving effect by preferentially operating the heat pump within the 8-hour late-night power supply period and energizing the heating element 14 as necessary.
When used by effectively switching the boiling temperature according to the required hot water supply load during the summer and winter seasons, the energy saving effect can be approximately 40% or more per year compared to a general electric water heater.
ところが、ヒートポンプ熱源は、水温および外
気温が低い中間期から冬季にかけては、給湯加熱
能力が減少する特性がある。このため同じタンク
１内の370の水をヒートポンプ熱源で加熱して
も夏季と冬季では運転時間が異つてくる。第３図
に水温変化と沸上げ時間を表わしたグラフを示し
ており、その線Ａは貯湯タンク１内に残湯がない
場合（すなわちタンク内水温が全体的に一様）の
通電時間を表わし線Ｂは貯湯タンク１内に100
の残湯がある場合（すなわちタンク内水温がある
程度高い場合）の通電時間を表わしている。ヒー
トポンプ熱源で55℃まで沸上げ、さらに4.4KW
の発熱体１３（一般に電気温水器は370のとき
4.4KWヒータ使用）で85℃まで沸上げるには加
熱効率92％として約３時間必要である。沸上げ設
定を85℃に設定したときは夏冬に関係なく沸上保
証することが望ましいが、このためには発熱体１
３が必らず３時間（ｘで表示）通電する時間が必
要である。しかし線Ａの場合、水温が約15℃以下
の季節になると、発熱体１３で85℃まで沸上げる
時間がなくなる。一方、残湯があれば発熱体通電
時間はｙとなりこのときは水温８℃位まで保証で
きることになる。 However, heat pump heat sources have a characteristic that their hot water heating capacity decreases from mid-season to winter when the water temperature and outside air temperature are low. For this reason, even if 370 water in the same tank 1 is heated by a heat pump heat source, the operating time will be different in summer and winter. Figure 3 shows a graph showing water temperature changes and boiling time. Line A represents the energization time when there is no hot water remaining in the hot water storage tank 1 (that is, the water temperature in the tank is uniform throughout). Line B is 100 in hot water storage tank 1
This represents the energization time when there is some remaining hot water (that is, when the water temperature in the tank is high to some extent). Boils up to 55℃ with heat pump heat source and generates an additional 4.4KW
heating element 13 (generally electric water heaters are 370
It takes about 3 hours to boil the water to 85℃ using a 4.4KW heater (using a 4.4KW heater) at a heating efficiency of 92%. When the boiling setting is set to 85℃, it is desirable to guarantee boiling regardless of summer or winter.
3 necessarily requires 3 hours of energization (indicated by x). However, in the case of line A, in the season when the water temperature is below about 15°C, there is no time for the heating element 13 to boil the water to 85°C. On the other hand, if there is residual hot water, the heating element energization time will be y, and in this case, the water temperature can be guaranteed up to about 8°C.
したがつて、本来高温の湯が欲しい季節にその
湯がつくれないことが起り、ユーザに不快感を与
えるという欠点があつた。 Therefore, hot water cannot be produced during the season when hot water is originally desired, which has the drawback of causing discomfort to the user.
発明の目的
この発明の目的は、前記欠点を除去するもの
で、発熱体の通電時間の電力供給時間内に確保で
きるようにして沸上温度を最適温度まで年間を通
じて確保できる電気温水器を提供することであ
る。OBJECT OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks, and to provide an electric water heater that can maintain the optimum boiling temperature throughout the year by ensuring the heating element is energized during the power supply time. That's true.
この発明の電気温水器は、貯湯タンクと、この
貯湯タンクの水を加熱するヒートポンプ熱源およ
び発熱体と、前記貯湯タンクの下位に設けられて
水温を検知する水温検知センサを有し前記水温が
所定の水温を超えたとき検出動作する水温検知部
と、前記水温が前記所定の水温よりも低いとき前
記ヒートポンプ熱源を動作させるとともに前記水
温検知部の前記検出動作により前記ヒートポンプ
熱源から前記発熱体に切り換える切換手段と、湯
温を検知する沸上温度検知センサを有し前記湯温
が所定の沸上温度になると前記発熱体の動作を停
止させる沸上検知部と、前記貯湯タンクの上位に
設けられて前記貯湯タンクの残湯温度を検知する
残湯温度検知センサを有し前記残湯温度が所定の
残湯温度以下のときに検出動作する残湯検知部
と、この残湯検知部の検出動作により所定時間を
カウントするとともに所定時間カウント後に前記
切換手段を切換動作させて前記発熱体を動作させ
るタイマとを備えたものである。 The electric water heater of the present invention includes a hot water storage tank, a heat pump heat source and a heating element that heat the water in the hot water storage tank, and a water temperature detection sensor that is provided below the hot water storage tank and detects the water temperature. a water temperature detection section that operates to detect when the water temperature exceeds the predetermined water temperature; and when the water temperature is lower than the predetermined water temperature, the heat pump heat source is operated and the detection operation of the water temperature detection section switches from the heat pump heat source to the heating element. a switching means, a boiling detection section having a boiling temperature detection sensor for detecting water temperature and stopping the operation of the heating element when the water temperature reaches a predetermined boiling temperature; and a boiling detection section provided above the hot water storage tank. a residual hot water detection section that has a residual hot water temperature detection sensor that detects the residual hot water temperature in the hot water storage tank and operates to detect when the residual hot water temperature is equal to or lower than a predetermined residual hot water temperature; and a detection operation of the residual hot water detection section. and a timer that counts a predetermined time and operates the switching means to operate the heating element after counting the predetermined time.
この発明の構成によれば、貯湯タンクの水温が
所定の水温以下のときは貯湯タンクの水がヒート
ポンプ熱源により加熱され、前記所定の水温を超
えると切換手段により発熱体に切換えられ、所定
の沸上温度になると停止する。またヒートポンプ
熱源による加熱中、残湯温度が所定の残湯温度以
下であるとき残湯検知部が検出動作し、タイマに
よる所定時間の経過後に発熱体に切り換えられ
る。このため、タイマの時間設定により、深夜電
力等供給時間が制限される電力で運転しても、環
境の変化に関係なく所望の沸上温度が保証でき、
しかも省エネルギ効果を最大限に得られる快適な
電気温水器をユーザに供給できる。 According to the configuration of the present invention, when the water temperature in the hot water storage tank is below a predetermined water temperature, the water in the hot water storage tank is heated by the heat pump heat source, and when the water temperature exceeds the predetermined water temperature, the water in the hot water storage tank is switched to the heating element by the switching means, and the water is heated to a predetermined boiling temperature. It will stop when the temperature reaches the upper temperature. Further, during heating by the heat pump heat source, when the temperature of the remaining hot water is below a predetermined remaining hot water temperature, the remaining hot water detection section operates to detect the remaining hot water, and after a predetermined time period according to the timer has elapsed, the heating element is switched. Therefore, by setting the timer, the desired boiling temperature can be guaranteed regardless of changes in the environment, even when operating on electricity whose supply time is limited, such as late night electricity.
Moreover, it is possible to provide users with a comfortable electric water heater that maximizes energy-saving effects.
実施例の説明
この発明の一実施例を第２図に示す。すなわ
ち、前記説明に加えて、回路に残湯検知部１５を
設け、これは貯湯タンク１の上部より任意の位置
の壁面（タンク上面から約100付近）に設けた
残湯センサ（サーミスタ）１６の信号を入力し、
残湯温度検知センサ１６が所定温度の残湯を検知
しない場合（すなわちそれより低い温度）にリレ
ーRy４に信号を送り負荷接点Ry４′を閉路にす
るようになつている。また残湯検知部１５は、水
温検知部１１ａと電気的に接続しており、水温検
知センサ１１が任意に設定した水温（たとえば約
15℃）以下にならないかぎり残湯検知部１５は動
作しないようになつている（したがつて負荷接点
Ry４′は開路のままとなつている）。負荷接点Ry
４′は100V電源にタイマ１８および操作スイツチ
１９とともに直列に接続し、タイマ１８の負荷接
点１８ａはリレーRy１に直列に接続されている。
なお、Ｔはトランス、D1，D2は整流器である。DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention is shown in FIG. That is, in addition to the above description, a remaining hot water detection section 15 is provided in the circuit, and this detects a remaining hot water sensor (thermistor) 16 provided on the wall surface at an arbitrary position from the top of the hot water storage tank 1 (approximately 100 degrees from the top of the tank). input the signal,
When the remaining hot water temperature detection sensor 16 does not detect the remaining hot water at a predetermined temperature (that is, the temperature is lower than the predetermined temperature), a signal is sent to the relay Ry4 to close the load contact Ry4'. Further, the remaining hot water detection unit 15 is electrically connected to the water temperature detection unit 11a, and the water temperature detection unit 11 arbitrarily sets the water temperature (for example, about
The remaining hot water detection unit 15 does not operate unless the temperature drops below 15°C (therefore, the load contact
Ry4' remains open). Load contact Ry
4' is connected in series with a timer 18 and an operation switch 19 to a 100V power supply, and a load contact 18a of the timer 18 is connected in series to a relay Ry1.
Note that T is a transformer, and D 1 and D 2 are rectifiers.
以上の構成により、水温が15℃よりも高い時は
水温検知部１７の働きにより残湯検知部１５の働
きを止めるため残湯の有無に関係なくヒートポン
プ熱源により省エネルギ運転が従来通りのシーケ
ンスに従つて行われる。一方中間期後半から冬季
にかけての水温が15℃よりも低下しているときは
残湯検知部１５が働き、残湯の温度が所定値以上
にあればリレーRy４が働かないので従来通りの
シーケンスで沸上げが行われる。また残湯温度を
検知しない場合はリレーRy４が作動し、負荷接
点Ry４′が閉路となる。したがつてタイマ１８が
作動し、所定の時間（たとえば約４時間）に達す
るとタイマ１８の負荷接点１８ａを開路とする。
その結果切換手段のリレーRy１の作動が停止し、
ヒートポンプ熱源の運転から発熱体１３の通電に
切換わり、発熱体１３の通電時間は残り４時間が
確保されるため85℃等の高温設定での沸上げも行
うことが可能となり、給湯機としての性能を得る
ことができる。なお、操作スイツチ１９は前述の
沸上げ温度を確保する場合閉成し、沸上げ温度よ
り経済性をさらに追求したい場合は、開路と任意
に切換えることにより省エネルギ性を失なうこと
がない。またこの発明は循環ポンプ３による一循
環沸上げ方式でも多循環沸上げ方式でも使用で
き、水温に限らず外気温による制御も可能であ
る。さらにタイマについてはメカニズム式で記述
しているが、半導体を利用したものでもよい。 With the above configuration, when the water temperature is higher than 15°C, the water temperature detection unit 17 works and the remaining hot water detection unit 15 stops working, so the energy saving operation is performed in the conventional sequence by the heat pump heat source regardless of the presence or absence of residual hot water. It is done accordingly. On the other hand, when the water temperature is lower than 15°C from the latter half of the intermediate season to the winter, the remaining hot water detection unit 15 operates, and if the temperature of the remaining hot water is above a predetermined value, the relay Ry4 does not operate, so the conventional sequence continues. Boiling takes place. If the remaining hot water temperature is not detected, relay Ry4 is activated and load contact Ry4' is closed. Therefore, the timer 18 is activated, and when a predetermined time (for example, about 4 hours) has elapsed, the load contact 18a of the timer 18 is opened.
As a result, relay Ry1 of the switching means stops operating,
Switching from operation of the heat pump heat source to energization of the heating element 13, the remaining 4 hours of energization of the heating element 13 is ensured, making it possible to perform boiling at a high temperature setting such as 85 degrees Celsius, making it possible to use it as a water heater. performance can be obtained. The operation switch 19 is closed when the above-mentioned boiling temperature is secured, and when it is desired to pursue more economical efficiency than the boiling temperature, it can be arbitrarily switched to open so that energy saving properties are not lost. Further, the present invention can be used in either a single-circulation boiling method using the circulation pump 3 or a multi-circulation boiling method, and can be controlled not only by water temperature but also by outside air temperature. Furthermore, although the timer is described as a mechanism type, it may also be one using a semiconductor.
発明の効果
この発明の電気温水器は、深夜電力等供給時間
が制限される電力で運転しても、所望沸上湯温度
を電力供給時間内に、環境の変化に関係なく保証
でき、しかも省エネルギ効果を生かして快適化を
図ることができるという効果がある。Effects of the Invention The electric water heater of the present invention can guarantee the desired boiling water temperature within the power supply time, regardless of changes in the environment, even when operated with electricity whose supply time is limited, such as late-night power, and is also economical. There is an effect that comfort can be achieved by making use of the energy effect.
第１図はこの発明の一実施例の系統図、第２図
は回路図、第３図は所定容量の水をその水温に対
してヒートポンプ熱源により沸上げるに要する時
間を示すグラフである。
１……貯湯タンク、４……ヒートポンプ熱源の
熱交換器、１１……水温検知センサ、１１ａ……
水温検知部、１２……沸上温度検知センサ、１２
ａ……沸上検知部、１３……発熱体、１５……残
湯検知部、１６……残湯温度検知センサ、１８…
…タイマ、１９……操作スイツチ、RY1……切換
手段のリレー。
FIG. 1 is a system diagram of an embodiment of the present invention, FIG. 2 is a circuit diagram, and FIG. 3 is a graph showing the time required to boil a predetermined volume of water at its temperature using a heat pump heat source. 1...Hot water storage tank, 4...Heat pump heat source heat exchanger, 11...Water temperature detection sensor, 11a...
Water temperature detection section, 12...Boiling temperature detection sensor, 12
a...Boiling detection section, 13...Heating element, 15...Remaining water detection section, 16...Remaining water temperature detection sensor, 18...
...Timer, 19...Operation switch, RY 1 ...Relay of switching means.
Claims (1)
るヒートポンプ熱源および発熱体と、前記貯湯タ
ンクの下位に設けられて水温を検知する水温検知
センサを有し前記水温が所定の水温を超えたとき
検出動作する水温検知部と、前記水温が前記所定
の水温よりも低いとき前記ヒートポンプ熱源を動
作させるとともに前記水温検知部の前記検出動作
により前記ヒートポンプ熱源から前記発熱体に切
り換える切換手段と、湯温を検知する沸上温度検
知センサを有し前記湯温が所定の沸上温度になる
と前記発熱体の動作を停止させる沸上検知部と、
前記貯湯タンクの上位に設けられて前記貯湯タン
クの残湯温度を検知する残湯温度検知センサを有
し前記残湯温度が所定の残湯温度以下のときに検
出動作する残湯検知部と、この残湯検知部の検出
動作により所定時間をカウントするとともに所定
時間カウント後に前記切換手段を切換動作させて
前記発熱体を動作させるタイマとを備えた電気温
水器。 ２ 前記タイマは操作スイツチによつても制御さ
れる特許請求の範囲第１項記載の電気温水器。 ３ 前記ヒートポンプ熱源および前記発熱体の供
給電力として、深夜電力等供給時間が制限される
電力を利用している特許請求の範囲第１項または
第２項記載の電気温水器。[Scope of Claims] 1. A hot water storage tank, a heat pump heat source and a heating element that heat water in the hot water storage tank, and a water temperature detection sensor that is installed below the hot water storage tank and detects the water temperature. a water temperature detection unit that operates to detect when the water temperature exceeds the water temperature; and a switch that operates the heat pump heat source when the water temperature is lower than the predetermined water temperature and switches from the heat pump heat source to the heating element by the detection operation of the water temperature detection unit. and a boiling detection section that has a boiling temperature detection sensor that detects the water temperature and stops the operation of the heating element when the water temperature reaches a predetermined boiling temperature;
a residual hot water detection unit that is provided above the hot water storage tank and has a residual hot water temperature detection sensor that detects the residual hot water temperature in the hot water storage tank, and operates to detect when the residual hot water temperature is equal to or lower than a predetermined residual hot water temperature; An electric water heater comprising: a timer that counts a predetermined time based on the detection operation of the residual hot water detection section, and after counting the predetermined time, switches the switching means to operate the heating element. 2. The electric water heater according to claim 1, wherein the timer is also controlled by an operation switch. 3. The electric water heater according to claim 1 or 2, wherein electric power whose supply time is limited, such as late-night electric power, is used as the electric power supplied to the heat pump heat source and the heating element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57186462A JPS5974451A (en) | 1982-10-22 | 1982-10-22 | electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57186462A JPS5974451A (en) | 1982-10-22 | 1982-10-22 | electric water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5974451A JPS5974451A (en) | 1984-04-26 |
| JPH0263142B2 true JPH0263142B2 (en) | 1990-12-27 |
Family
ID=16188885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57186462A Granted JPS5974451A (en) | 1982-10-22 | 1982-10-22 | electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5974451A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013104624A (en) * | 2011-11-15 | 2013-05-30 | Panasonic Corp | Refrigeration cycle apparatus and hot water producing apparatus |
| CN103499142B (en) * | 2013-10-24 | 2016-01-06 | 胡明建 | A kind of method for designing utilizing solar energy ground energy air can heat up to water |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57122255A (en) * | 1981-01-22 | 1982-07-30 | Matsushita Electric Industrial Co Ltd | Heat pump type hot water feeder |
| JPS57122233A (en) * | 1981-01-22 | 1982-07-30 | Matsushita Electric Ind Co Ltd | Heat pump type hot water supply device |
-
1982
- 1982-10-22 JP JP57186462A patent/JPS5974451A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5974451A (en) | 1984-04-26 |
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