JP3173204B2 - Heat pump water heater - Google Patents
Heat pump water heaterInfo
- Publication number
- JP3173204B2 JP3173204B2 JP1155893A JP1155893A JP3173204B2 JP 3173204 B2 JP3173204 B2 JP 3173204B2 JP 1155893 A JP1155893 A JP 1155893A JP 1155893 A JP1155893 A JP 1155893A JP 3173204 B2 JP3173204 B2 JP 3173204B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- water storage
- storage tank
- water supply
- temperature
- 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
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明は給湯装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply apparatus.
【0002】[0002]
【従来の技術】従来、この種のヒートポンプ式給湯装置
として、例えば実開平01−97147号公報に記載さ
れたものがある。図22は上記公報に記載された従来の
ヒートポンプ式給湯装置の構成図である。同図のよう
に、この給湯装置は、互いに並設された複数の貯湯タン
ク1a,1b,1cを有しているが、各貯湯タンク1
a,1b,1cにはその下端部に給水口2a,2b,2
cが、またその上端部に給湯口3a,3b,3cがそれ
ぞれ形成されており、各給水口2a,2b,2cは給水
配管4に、また各給湯口3a,3b,3cは給湯配管5
にそれぞれ接続されている。また各貯湯タンク1a,1
b,1cの給水口2a,2b,2cにはそれぞれ開閉弁
21a,21b,21cが接続されている。これは、上
記給湯配管5先端側のカラン(図示せず)が開弁されて
いるときに、選択的に開弁された開閉弁21aに接続さ
れた貯湯タンク1a内の貯湯水を、上記給水配管4を通
して作用する水道水の加圧力により、押し上げ式に給湯
し得るようにするためのものである。さらに、上記貯湯
タンク1a,1b,1cのうち特定のタンク1c内に
は、深夜のみ作動する電気ヒータ25が配設されてい
る。一方、図22において、6は上記各貯湯タンク1
a,1b,1cよりも容量の小さな補助タンクであっ
て、この補助タンク6にはその下端側位置に取水口7と
給水口8とが設けられており、これらの取水口7と給水
口8とは加熱用往管9と加熱用復管10とによって、ヒ
ートポンプシステムによる加熱部としての給湯用熱交換
器11に接続され、上記補助タンク6と給湯用熱交換器
11との間で水循環経路が構成されている。上記給湯用
熱交換器11は、冷凍サイクルにおける凝縮器として作
用するものであって、図示しない圧縮機、蒸発器、減圧
機構等に冷媒配管によって接続され、これによってヒー
トポンプシステムを構成している。すなわち、上記圧縮
機を運転して冷媒循環がなされる際には、上記給湯用熱
交換器11において冷媒の凝縮を生じ、その凝縮熱がこ
の給湯用11内を循環するようになされている。そして
上記補助タンク6の上部側に形成されている給湯口12
が給湯接続管13によって上記給湯配管5に接続されて
いる。また上記加熱用往管9には、上記補助タンク6か
ら、多方向切換弁14と循環ポンプ15とが順次介設さ
れており、上記多方向切換弁14はさらに給水接続管1
6によって上記給水配管4に接続されている。上記多方
向切換弁14は、ポンプ15への接続状態を補助タンク
6の取水口7側と各貯湯タンク1a,1b,1cの給水
口2a,2b,2cとの間で切り換えるものである。な
お各上記貯湯タンク1a,1b,1cには、図示しては
いないが、上下方向に合計4個のサーミスタが設けられ
ており、これらのサーミスタによって、湯温を各水位毎
に検出し得るようになされており、また補助タンク6に
も、内部湯温を検出するためのサーミスタが取り付けら
れている。2. Description of the Related Art Conventionally, as a heat pump type hot water supply apparatus of this kind, there is one disclosed in, for example, Japanese Utility Model Laid-Open No. 01-97147. FIG. 22 is a configuration diagram of a conventional heat pump hot water supply apparatus described in the above publication. As shown in the figure, the hot water supply apparatus has a plurality of hot water storage tanks 1a, 1b, and 1c arranged side by side.
a, 1b, and 1c have water supply ports 2a, 2b, and 2 at their lower ends.
c, and water supply ports 3a, 3b, 3c are formed at the upper end thereof, each of the water supply ports 2a, 2b, 2c is connected to the water supply pipe 4, and each of the water supply ports 3a, 3b, 3c is connected to the hot water supply pipe 5.
Connected to each other. In addition, each hot water storage tank 1a, 1
On / off valves 21a, 21b, 21c are connected to the water supply ports 2a, 2b, 2c of b, 1c, respectively. This is because the hot water stored in the hot water storage tank 1a connected to the selectively opened / closed valve 21a is supplied to the hot water supply pipe 5 when the callan (not shown) at the front end of the hot water supply pipe 5 is opened. It is for enabling hot water to be supplied in a push-up manner by the pressure of tap water acting through the pipe 4. Further, in a specific tank 1c of the hot water storage tanks 1a, 1b, 1c, an electric heater 25 that operates only at midnight is provided. On the other hand, in FIG.
This auxiliary tank has a smaller capacity than the auxiliary tanks a, 1b, and 1c. The auxiliary tank 6 is provided with a water intake port 7 and a water supply port 8 at the lower end side thereof. Is connected to a hot water supply heat exchanger 11 as a heating unit by a heat pump system by a heating forward pipe 9 and a heating return pipe 10, and a water circulation path between the auxiliary tank 6 and the hot water supply heat exchanger 11. Is configured. The hot water supply heat exchanger 11 functions as a condenser in a refrigeration cycle, and is connected to a compressor, an evaporator, a decompression mechanism, and the like (not shown) by a refrigerant pipe, thereby constituting a heat pump system. That is, when the refrigerant is circulated by operating the compressor, the refrigerant is condensed in the hot water supply heat exchanger 11, and the condensed heat is circulated in the hot water supply 11. A hot water supply port 12 formed on the upper side of the auxiliary tank 6
Are connected to the hot water supply pipe 5 by a hot water supply connection pipe 13. A multidirectional switching valve 14 and a circulating pump 15 are sequentially provided from the auxiliary tank 6 in the heating forward pipe 9, and the multidirectional switching valve 14 is further connected to the water supply connection pipe 1.
6 is connected to the water supply pipe 4. The multidirectional switching valve 14 switches the connection state to the pump 15 between the intake port 7 side of the auxiliary tank 6 and the water supply ports 2a, 2b, 2c of the hot water storage tanks 1a, 1b, 1c. Although not shown, each of the hot water storage tanks 1a, 1b, and 1c is provided with a total of four thermistors in the vertical direction, so that the temperature of the hot water can be detected for each water level by these thermistors. The auxiliary tank 6 is also provided with a thermistor for detecting the internal hot water temperature.
【0003】次に上記構成の給湯装置の作動状態につい
て説明する。初めに、貯湯タンク1a内全体が例えば1
0℃程度の給水水温状態にある場合からの加熱運転につ
いて説明する。このとき三方向切り換え弁14を補助タ
ンク6の取水口7側に位置させてポンプ15の運転と冷
凍サイクルの運転とが開始される。この状態において
は、補助タンク6内の水が取水口7からポンプ15の作
用によって吸引され、給湯用熱交換器11に送られて加
熱され、さらに加熱用復管10から給水口8を通して補
助タンク6内へと返流される循環が継続される。この運
転の継続によって補助タンク6内の湯温が設定温度に達
した場合、すなわち図23に示している沸上げ工程図に
おいて、同図(a)に達した場合には、三方向切換弁1
4によって、ポンプ15を貯湯タンク1aの給水口2a
側への接続状態に切換える。この結果、貯湯タンク1a
内の下部の水が上記ポンプ15により吸引され、加熱用
往管9、給湯用熱交換器11、加熱用復管10を経て補
助タンク6の給水口8を通してこの補助タンク6内に流
入する。この水の流入によって、それまでの補助タンク
6内の加熱湯は上方へと押し上げられ、図21(b)に
示すように、補助タンク6の給湯口12から給湯接続管
13を経て貯湯タンク1aの上部側へ流入する。この状
態を所定時間継続することによって、図23(c)に示
すように、補助タンク6で設定温度まで加熱された湯が
貯湯タンク1aの上部位置に、また同時に、それまで貯
湯タンク1aの下部側に存在していた水が補助タンク6
内へとそれぞれ移送される置換が行われる。そしてこの
置換の終了を見込んだ時間経過後に、再び三方向切換弁
14によってポンプ15への接続を補助タンク6の取水
口7側に切換えることにより、補助タンク6と給湯用熱
交換器11との間の水の循環が行われ、補助タンク6内
の水の加熱が行われる。この加熱の間、貯湯タンク1a
内においては、上部側に設定温度の湯が、また下部側に
それよりも温度の低い水が位置しているので、この段階
で給湯配管5から設定温度の湯を供給することが可能で
ある。図23(d)には、補助タンク6内の湯が再び設
定温度に達した状態を示しており、この状態で上記と同
様に三方向切換弁14を切換えることによって、この加
熱湯が図21(e)に示すように、貯湯タンク1aの上
部側に移送される置換が行われる。この移送湯も先の加
熱湯を押し下げて、その上部側に貯溜される。そしてこ
のような作動を繰り返して特定の貯湯タンク1aを温水
で満たした後、当該開閉弁21aを閉弁すると共に、次
の開閉弁21bを開弁し、次の貯湯タンク1bに対して
上記同様な手順で温水を供給しさらにその後は、それ以
後の貯湯タンク1cに対しても上記と同様な手順で順次
温水を供給する。一方、電気ヒータ25の配設された貯
湯タンク1cにおいては、上記のように供給された低温
湯(40℃程度)を、それよりもさらに高温の第2設定
温度(例えば65℃)になるまで電気ヒータ25によっ
て加熱する。Next, the operation of the hot water supply apparatus having the above configuration will be described. First, the entire hot water storage tank 1a is, for example, 1
A description will be given of a heating operation when the temperature of the supply water is about 0 ° C. At this time, the operation of the pump 15 and the operation of the refrigeration cycle are started with the three-way switching valve 14 positioned at the water intake 7 side of the auxiliary tank 6. In this state, the water in the auxiliary tank 6 is sucked from the water intake port 7 by the action of the pump 15, sent to the heat exchanger 11 for hot water supply, heated, and further passed through the water supply port 8 from the return pipe 10 for heating. The circulation returned into 6 is continued. When the temperature of the hot water in the auxiliary tank 6 reaches the set temperature due to the continuation of this operation, that is, in the boiling process diagram shown in FIG.
4, the pump 15 is connected to the water supply port 2a of the hot water storage tank 1a.
Switch to the side connection state. As a result, the hot water storage tank 1a
The lower part of the water is sucked by the pump 15 and flows into the auxiliary tank 6 through the water supply port 8 of the auxiliary tank 6 through the heating forward pipe 9, the hot water supply heat exchanger 11, and the heating return pipe 10. By this inflow of the water, the hot water in the auxiliary tank 6 up to that point is pushed upward, and as shown in FIG. 21B, the hot water storage tank 1a passes through the hot water supply port 12 of the auxiliary tank 6 via the hot water supply connection pipe 13. Flows into the upper part of. By continuing this state for a predetermined time, as shown in FIG. 23 (c), the hot water heated to the set temperature in the auxiliary tank 6 is at the upper position of the hot water storage tank 1a, and at the same time, the lower part of the hot water storage tank 1a The water that was present on the side is the auxiliary tank 6
A displacement is performed, which is transferred into each of them. Then, after a lapse of time in anticipation of the completion of the replacement, the connection to the pump 15 is again switched to the water intake port 7 side of the auxiliary tank 6 by the three-way switching valve 14, so that the auxiliary tank 6 and the hot water supply heat exchanger 11 are connected. During this time, the circulation of water is performed, and the water in the auxiliary tank 6 is heated. During this heating, the hot water storage tank 1a
Inside, since the hot water of the set temperature is located on the upper side and the water of lower temperature is located on the lower side, it is possible to supply the hot water of the set temperature from the hot water supply pipe 5 at this stage. . FIG. 23 (d) shows a state in which the hot water in the auxiliary tank 6 has reached the set temperature again. In this state, by switching the three-way switching valve 14 in the same manner as described above, the hot water becomes As shown in (e), replacement is performed to be transferred to the upper side of the hot water storage tank 1a. This transferred hot water also presses down the previously heated hot water and is stored on the upper side thereof. After the above operation is repeated to fill the specific hot water storage tank 1a with hot water, the on-off valve 21a is closed, the next on-off valve 21b is opened, and the same operation as described above is performed on the next hot water storage tank 1b. Then, the hot water is supplied to the hot water storage tank 1c thereafter in the same manner as described above. On the other hand, in the hot water storage tank 1c provided with the electric heater 25, the low-temperature hot water (about 40 ° C.) supplied as described above is changed until the second set temperature (for example, 65 ° C.) becomes higher than that. It is heated by the electric heater 25.
【0004】[0004]
【発明が解決しようとする課題】従来のヒートポンプ式
給湯装置は、以上のように、加熱用のタンク6で沸上げ
た加熱湯を貯湯タンク1a,1b,1cに移送すること
によって貯湯を行うため、昼間に冷房の排熱を利用して
沸上げ運転を行うような場合や、残湯量が少なくなり、
使いきったタンクの沸上げ運転を行うような場合、従来
のヒートポンプ式給湯装置では回路の構成上、加熱タン
クで沸上げた加熱湯を貯湯タンクへ移送している間、出
湯運転ができないという問題があった。また、もし加熱
タンク6が腐食等によって使用不可能となった場合、ま
ったく給湯運転ができなくなるという問題点があった。
また、一部のタンクにしかヒータが入っていないため、
ヒータが入っていないタンクは高温に沸上げることがで
きず、冬場など必要給湯熱量が大きい場合をカバーしよ
うとすると、タンクの必要容量が大きくなるという問題
点があった。また、ヒータが入ったタンクと入っていな
いタンクを別々に製造する必要があり、量産性が悪いと
いう問題点があった。As described above, the conventional heat pump type hot water supply apparatus stores hot water by transferring the hot water boiled in the heating tank 6 to the hot water storage tanks 1a, 1b, 1c. In the daytime, such as when performing boiling operation using the exhaust heat of cooling, the amount of residual hot water decreases,
In the case of performing the boiling operation of the used tank, the conventional heat pump hot water supply device cannot perform the tapping operation while transferring the heated water heated by the heating tank to the hot water storage tank due to the circuit configuration. was there. Further, if the heating tank 6 becomes unusable due to corrosion or the like, there is a problem that the hot water supply operation cannot be performed at all.
Also, since only some tanks have heaters,
A tank without a heater cannot be heated to a high temperature, and if it is necessary to cover a case where the required amount of hot water is large, such as in winter, there is a problem that the required capacity of the tank becomes large. In addition, it is necessary to separately manufacture a tank containing a heater and a tank not containing a heater, and there is a problem that mass productivity is poor.
【0005】この発明は、以上のような問題点を解決す
るためになされたものであり、昼間の冷房排熱を利用し
た高効率沸上げ運転などを行いながら連続して出湯が可
能であり、一部のタンクが使用不可能となっても他のタ
ンクによって給湯機能が維持でき、全てまたは一部のタ
ンクを必要に応じて高温に沸上げることが可能であり、
残湯量が少なくなったら、使いきったタンクを沸上げ運
転を行い、同時に出湯も可能という高信頼性、高効率、
省スペースのヒートポンプ式給湯装置を提供することを
目的としている。The present invention has been made in order to solve the above problems, and it is possible to continuously discharge hot water while performing a high-efficiency boiling operation utilizing daytime cooling and exhaust heat. Even if some tanks become unusable, the hot water supply function can be maintained by other tanks, it is possible to boil all or some tanks to high temperatures as necessary,
When the amount of remaining hot water is low, the used tank is boiled, and hot water can be discharged at the same time.
It is an object of the present invention to provide a space-saving heat pump water heater.
【0006】[0006]
【課題を解決するための手段】この発明に係るヒートポ
ンプ式給湯装置は、ヒートポンプシステムによる加熱部
と、互いに並設された複数の貯湯タンクと、前記加熱部
と前記各貯湯タンクを連結し前記加熱部へ前記各貯湯タ
ンクの水を循環させ沸上げを行う循環系と、前記各貯湯
タンク下部に接続され貯湯タンクへ給水を行う給水系
と、前記各貯湯タンク上部に接続され貯湯タンクから給
湯を行う給湯系と、前記各貯湯タンク内に配設された加
熱を行う加熱用ヒータと、前記循環系の前記加熱部下部
と前記各貯湯タンク下部との間に配設され前記各貯湯タ
ンクを切換える第1の多方向切換弁と、前記給水系の前
記各貯湯タンクへ分岐する分岐点に配設され前記各貯湯
タンクを切換える第2の多方向切換弁と、を備え、前記
第1の多方向切換弁の切換えにより開路された一方の貯
湯タンクを沸上げ運転すると共に、前記第2の多方向切
換弁の切換えにより開路された他の貯湯タンクを給水及
び出湯運転を行うものである。A heat pump type hot water supply apparatus according to the present invention includes a heating unit provided with a heat pump system, a plurality of hot water storage tanks arranged in parallel with each other, and connecting the heating unit and each of the hot water storage tanks to the heating unit. A circulating system for circulating the water in each of the hot water storage tanks for boiling, a water supply system connected to a lower portion of each of the hot water storage tanks to supply water to the hot water storage tanks, and a hot water supply from the hot water storage tanks connected to the upper portions of the hot water storage tanks. A hot water supply system, a heating heater disposed in each of the hot water storage tanks for heating, and a switch between the hot water storage tanks disposed between the lower portion of the circulating system and the lower portion of the hot water storage tanks. A first multi-directional switching valve, and a second multi-directional switching valve disposed at a branch point of the water supply system branching to each of the hot water storage tanks and switching each of the hot water storage tanks, wherein the first multi-directional switching valve is provided. Switching valve One of the hot water storage tank which is opened with operating boiling up by switching, and performs the water supply and hot water operation other hot water storage tank which is opened by the switching of the second multi-way selector valve.
【0007】また、この発明に係るヒートポンプ式給湯
装置は、各貯湯タンク内に配設され湯温を検出する複数
の温度検出手段と、この温度検出手段により検出された
一つの貯湯タンクの湯温が設定温度以下の場合、この貯
湯タンクの沸上げを行い、この一つの貯湯タンクの湯温
が設定温度以上となった場合は、他の貯湯タンクに切換
え、この貯湯タンクの湯温が設定温度以下の場合、この
貯湯タンクの沸上げを行う制御手段と、を備える。Further, a heat pump type hot water supply apparatus according to the present invention has a plurality of temperature detecting means disposed in each hot water storage tank for detecting the hot water temperature, and the hot water temperature of one hot water storage tank detected by the temperature detecting means. If the temperature of the hot water storage tank is lower than the set temperature, the hot water storage tank is boiled. In the following case, control means for boiling the hot water storage tank is provided.
【0008】また、この発明に係るヒートポンプ式給湯
装置は、各貯湯タンク内に配設され湯温を検出する複数
の温度検出手段と、この温度検出手段により検出された
出湯中の前記一つの貯湯タンクの所定箇所の湯温が設定
温度以下となった場合、他の貯湯タンクからの出湯に切
換えることにより、湯切れを防止する制御手段と、を備
える。Further, the heat pump type hot water supply apparatus according to the present invention has a plurality of temperature detecting means disposed in each hot water storage tank for detecting the temperature of the hot water, and the one hot water storage in the hot water detected by the temperature detecting means. When the temperature of the hot water at a predetermined location of the tank becomes equal to or lower than the set temperature, the control unit switches to hot water from another hot water storage tank to prevent running out of hot water.
【0009】また、この発明に係るヒートポンプ式給湯
装置は、貯湯タンクの外部近傍に配置され外気温度を検
出する外気温度検出手段と、この外気温度検出手段によ
り検出された前記貯湯タンクの外部近傍の外気温度が第
1の設定温度以下の場合、ヒートポンプの沸上げ後に全
ての前記貯湯タンクを加熱ヒータによる加熱を行い、前
記外気温度が第2の設定温度以上の場合、ヒートポンプ
のみで沸上げ、前記外気温度が第1の設定温度以上で第
2の設定以下の場合、全ての前記貯湯タンクをヒートポ
ンプの沸上げ後、一部の前記貯油タンクを加熱ヒータに
よる加熱を行う制御手段と、を備える。Further, a heat pump type hot water supply apparatus according to the present invention is provided with an outside air temperature detecting means arranged near the outside of the hot water storage tank to detect an outside air temperature, and a near outside of the hot water storage tank detected by the outside air temperature detecting means. When the outside air temperature is equal to or lower than the first set temperature, all the hot water storage tanks are heated by the heater after the heat pump is boiled, and when the outside air temperature is equal to or higher than the second set temperature, only the heat pump is used for boiling. When the outside air temperature is equal to or higher than the first set temperature and equal to or lower than the second set temperature, control means is provided for heating all of the hot water storage tanks with a heat pump and then heating some of the oil storage tanks with a heater.
【0010】[0010]
【作用】この発明に係るヒートポンプ式給湯装置は、貯
湯タンク下部に接続された給水系の多方向切換弁により
貯湯タンクを切換え給水を行い、循環系の多方向切換弁
により加熱し沸上げを行う貯湯タンクに切換え、加熱部
に水を循環させ沸上げを行い、必要に応じ各貯湯タンク
内に配設された加熱用ヒータにより、さらに加熱し貯湯
タンク上部に接続された給湯系から出湯を行う。In the heat pump type hot water supply apparatus according to the present invention, the hot water storage tank is switched by a water supply system multi-directional switching valve connected to the lower part of the hot water storage tank to supply water, and heated and boiled by the circulating system multi-directional switching valve. Switch to the hot water storage tank, circulate water in the heating section to boil, and if necessary, further heat by the heater for heating arranged in each hot water storage tank and discharge hot water from the hot water supply system connected to the upper part of the hot water storage tank .
【0011】また、この発明に係るヒートポンプ式給湯
装置は、各貯湯タンク内部に配設され湯温を検出する複
数の温度検出手段により検出された一つの貯湯タンクの
湯温が設定温度以下の場合、この貯湯タンクの沸上げを
行い、この一つの貯湯タンクの湯温が設定温度以上とな
った場合は、他の貯湯タンクに切換え、この貯湯タンク
の湯温が設定温度以下の場合、この貯湯タンクの沸上げ
を自動的に行う。Further, the heat pump type hot water supply apparatus according to the present invention is arranged such that the hot water temperature of one hot water storage tank detected by a plurality of temperature detecting means arranged inside each hot water storage tank is equal to or lower than a set temperature. The hot water storage tank is boiled, and if the temperature of the hot water storage tank is higher than the set temperature, the hot water storage tank is switched to another hot water storage tank. Automatically boil the tank.
【0012】また、この発明に係るヒートポンプ式給湯
装置は、各貯湯タンク内部に配設された湯温を検出する
複数の温度検出手段により検出された出湯中の一つの貯
湯タンクの所定箇所の湯温が設定温度以下となった場
合、他の貯湯タンクからの出湯に自動的に切換え、湯切
れを防止する。Further, the heat pump type hot water supply apparatus according to the present invention is characterized in that the hot water at a predetermined location in one hot water storage tank during hot water detection detected by a plurality of temperature detecting means for detecting the temperature of the hot water disposed inside each hot water storage tank. When the temperature falls below the set temperature, the hot water is automatically switched to hot water from another hot water storage tank to prevent running out of hot water.
【0013】また、この発明に係るヒートポンプ式給湯
装置は、貯湯タンクの外部近傍に配設され外気温度を検
出する外気温度検出手段により検出された貯湯タンクの
外部近傍の外気温度が第1の設定温度以下の場合、ヒー
トポンプの沸上げ後に全ての前記貯湯タンクを電気ヒー
タによる加熱を行い、前記外気温度が第2の設定温度以
上の場合、ヒートポンプのみで沸上げ、前記外気温度が
第1の設定温度以上で第2の設定温度以下の場合、全て
の前記貯湯タンクをヒートポンプの沸上げ後に一部の前
記貯湯タンクを電気ヒータによる加熱を自動的に行う。Further, in the heat pump type hot water supply apparatus according to the present invention, the outside air temperature near the outside of the hot water tank detected by the outside air temperature detecting means arranged near the outside of the hot water storage tank for detecting the outside air temperature is set to the first setting. If the temperature is equal to or less than the temperature, all the hot water storage tanks are heated by the electric heater after the heat pump boils, and if the outside air temperature is equal to or higher than the second set temperature, the heat is heated only by the heat pump and the outside air temperature is set to the first set temperature. When the temperature is equal to or more than the temperature and equal to or less than the second set temperature, after all the hot water storage tanks are heated by the heat pump, some of the hot water storage tanks are automatically heated by the electric heater.
【0014】[0014]
実施例1.図1は実施例1の構成を示す。図において、
1a,1bは貯湯タンク、2a,2bは水道から貯湯タ
ンク1a,1bへの給水口、3a,3bは貯湯タンク1
a,1bの給湯口、4は給水配管、5は給湯配管、7
a,7bは貯湯タンク1a,1bの取水口、8a,8b
はポンプ15から貯湯タンク1a,1bへの循環給湯
口、9は加熱用往管、10は加熱用復管、11は加熱部
である給湯用熱交換器、14a,14bは多方向切換
弁、15は循環ポンプ、17a,17bは貯湯タンク1
a,1bの排水口、18a,18bは排水弁、25a,
25bは電気ヒータである。Embodiment 1 FIG. FIG. 1 shows the configuration of the first embodiment. In the figure,
1a, 1b are hot water storage tanks, 2a, 2b are water supply ports from hot water supply to hot water storage tanks 1a, 1b, 3a, 3b are hot water storage tanks 1.
a, 1b hot water supply ports, 4 is a water supply pipe, 5 is a hot water supply pipe, 7
a and 7b are intakes of hot water storage tanks 1a and 1b, 8a and 8b
Is a circulating hot water supply port from the pump 15 to the hot water storage tanks 1a and 1b, 9 is a forward pipe for heating, 10 is a return pipe for heating, 11 is a heat exchanger for hot water supply which is a heating unit, 14a and 14b are multidirectional switching valves, 15 is a circulation pump, 17a and 17b are hot water storage tanks 1
a, 1b are drainage outlets, 18a, 18b are drainage valves, 25a,
25b is an electric heater.
【0015】次に動作について説明する。この発明のヒ
ートポンプ式給湯装置には、6つの運転モードがあり、
以下に各運転モードについて動作を説明する。 (1)貯湯タンク1a沸上げ運転 図2によって説明を行う。貯湯タンク1a沸上げ運転時
には、多方向切換弁14aを貯湯タンク1a側に切換
え、多方向切換弁14bを貯湯タンク1b側に切換え、
排水弁18a,18bを閉止の状態とする。貯湯タンク
1aの下部にある取水口7aより取水された水は、ポン
プ15により多方向切換弁14a、ポンプ15、給湯用
熱交換器11を循環し、貯湯タンク1aの上部の循環給
湯口8aより再び貯湯タンク1aに入る。Next, the operation will be described. The heat pump water heater of the present invention has six operation modes,
The operation of each operation mode will be described below. (1) Boiling operation of hot water storage tank 1a Description will be given with reference to FIG. During the boiling operation of the hot water storage tank 1a, the multidirectional switching valve 14a is switched to the hot water storage tank 1a side, and the multidirectional switching valve 14b is switched to the hot water storage tank 1b side,
The drain valves 18a and 18b are closed. The water taken from the water inlet 7a at the lower part of the hot water storage tank 1a is circulated through the multi-way switching valve 14a, the pump 15 and the hot water supply heat exchanger 11 by the pump 15, and from the circulating hot water supply port 8a at the upper part of the hot water storage tank 1a. It enters the hot water storage tank 1a again.
【0016】(2)貯湯タンク1b沸上げ運転 図3によって説明を行う。貯湯タンク1b沸上げ運転時
には、多方向切換弁14aを貯湯タンク1b側に切換
え、多方向切換弁14bを貯湯タンク1a側に切換え、
排水弁18a,18bを閉止の状態とする。貯湯タンク
1bの下部にある取水口7bより取水された水は、ポン
プ15により多方向切換弁14a、ポンプ15、給湯用
熱交換器11を循環し、貯湯タンク1bの上部の循環給
湯口8bより再び貯湯タンク1bに入る。(2) Boiling operation of hot water storage tank 1b This will be described with reference to FIG. During the boiling operation of the hot water storage tank 1b, the multi-way switching valve 14a is switched to the hot water storage tank 1b side, and the multi-directional switching valve 14b is switched to the hot water storage tank 1a side,
The drain valves 18a and 18b are closed. The water taken from the water intake 7b at the lower part of the hot water storage tank 1b circulates through the multi-way switching valve 14a, the pump 15 and the hot water supply heat exchanger 11 by the pump 15, and from the circulation hot water supply port 8b at the upper part of the hot water storage tank 1b. It enters the hot water storage tank 1b again.
【0017】(3)貯湯タンク1a出湯運転 図4によって説明を行う。貯湯タンク1a出湯運転時に
は、多方向切換弁14aを貯湯タンク1b側に切換え、
多方向切換弁14bを貯湯タンク1a側に切換え、排水
弁18a,18bを閉止、ポンプ15を停止の状態とす
る。水道配管につながった給水配管4から水道圧によっ
て入ってきた市水は、多方向切換弁14bを通って貯湯
タンク1aの下部にある給水口2aに入り、貯湯タンク
1a内の加熱湯を貯湯タンク1aの上部にある給湯口3
aより押し出すことで、出湯配管5より出湯を行う。(3) Hot Water Storage Tank 1a Hot Water Driving Operation A description will be given with reference to FIG. During hot water storage tank 1a tapping operation, the multi-way switching valve 14a is switched to the hot water storage tank 1b side,
The multi-way switching valve 14b is switched to the hot water storage tank 1a side, the drain valves 18a, 18b are closed, and the pump 15 is stopped. City water that has entered by water pressure from the water supply pipe 4 connected to the water supply pipe enters the water supply port 2a at the lower part of the hot water storage tank 1a through the multi-way switching valve 14b, and the heated hot water in the hot water storage tank 1a is stored in the hot water storage tank. Hot water supply port 3 at the top of 1a
The hot water is discharged from the hot water supply pipe 5 by being pushed out from a.
【0018】(4)貯湯タンク1b出湯運転 図5によって説明を行う。貯湯タンク1b出湯運転時に
は、多方向切換弁14aを貯湯タンク1a側に切換え、
多方向切換弁14bを貯湯タンク1b側に切換え、排水
弁18a,18bを閉止、ポンプ15を停止の状態とす
る。水道配管につながった給水配管4から水道圧によっ
て入ってきた市水は、多方向切換弁14bを通って貯湯
タンク1bの下部にある給水口2bに入り、貯湯タンク
1b内の加熱湯を貯湯タンク1bの上部にある給湯口3
bより押し出すことで、出湯配管5より出湯を行う。(4) Hot water tapping operation of hot water storage tank 1b This will be described with reference to FIG. During the hot-water storage tank 1b tapping operation, the multidirectional switching valve 14a is switched to the hot-water storage tank 1a side,
The multi-way switching valve 14b is switched to the hot water storage tank 1b side, the drain valves 18a and 18b are closed, and the pump 15 is stopped. City water that has entered by water pressure from the water supply pipe 4 connected to the water supply pipe enters the water supply port 2b at the lower part of the hot water storage tank 1b through the multi-way switching valve 14b, and the heated hot water in the hot water storage tank 1b is stored in the hot water storage tank. Hot water supply port 3 at the top of 1b
Hot water is supplied from the hot water supply pipe 5 by being pushed out from the hot water supply pipe b.
【0019】(5)貯湯タンク1a沸上げ及び貯湯タン
ク1b出湯同時運転 図6によって説明を行う。貯湯タンク1aの沸上げ運転
時には、多方向切換弁14aを貯湯タンク1a側に切換
え、多方向切換弁14bを貯湯タンク1b側に切換え、
排水弁18a,18bを閉止の状態とする。貯湯タンク
1aの下部にある取水口7aより取水された水は、ポン
プ15により多方向切換弁14a、ポンプ15、給湯用
熱交換器11を循環し、貯湯タンク1aの上部の循環給
湯口8aより再び貯湯タンク1aに入る。一方、水道配
管につながった給水配管4から水道圧によって入ってき
た市水は、多方向切換弁14bを通って貯湯タンク1b
の下部にある給水口2bに入り、貯湯タンク1b内の加
熱湯を貯湯タンク1bの上部にある給湯口3bより押し
出すことで、出湯配管5より出湯を行う。(5) Simultaneous boiling of hot water storage tank 1a and simultaneous operation of hot water storage tank 1b will be described with reference to FIG. During the boiling operation of the hot water storage tank 1a, the multi-directional switching valve 14a is switched to the hot water storage tank 1a side, and the multi-directional switching valve 14b is switched to the hot water storage tank 1b side,
The drain valves 18a and 18b are closed. The water taken from the water inlet 7a at the lower part of the hot water storage tank 1a is circulated through the multi-way switching valve 14a, the pump 15 and the hot water supply heat exchanger 11 by the pump 15, and from the circulating hot water supply port 8a at the upper part of the hot water storage tank 1a. It enters the hot water storage tank 1a again. On the other hand, city water that has entered by water pressure from the water supply pipe 4 connected to the water supply pipe passes through the multi-way switching valve 14b and is stored in the hot water storage tank 1b.
The hot water in the hot water storage tank 1b is pushed out from the hot water supply port 3b in the upper part of the hot water storage tank 1b, so that hot water is discharged from the hot water supply pipe 5.
【0020】(6)貯湯タンク1b沸上げ及び貯湯タン
ク1a出湯同時運転 図7によって説明を行う。貯湯タンク1bの沸上げ運転
時には、多方向切換弁14aを貯湯タンク1b側に切換
え、多方向切換弁14bを貯湯タンク1a側に切換え、
排水弁18a,18bを閉止の状態とする。貯湯タンク
1bの下部にある取水口7bより取水された水は、貯湯
ポンプ15により多方向切換弁14a、ポンプ15、給
湯用熱交換器11を循環し、貯湯タンク1bの上部の循
環給湯口8bより再び貯湯タンク1bに入る。一方、水
道配管につながった給水配管4から水道圧によって入っ
てきた市水は、多方向切換弁14bを通って貯湯タンク
1aの下部にある給水口2aに入り、貯湯タンク1a内
の加熱湯を貯湯タンク1aの上部にある給湯口3aより
押し出すことで、出湯配管5より出湯を行う。(6) Simultaneous operation of boiling of hot water storage tank 1b and hot water storage tank 1a will be described with reference to FIG. During the boiling operation of the hot water storage tank 1b, the multidirectional switching valve 14a is switched to the hot water storage tank 1b side, and the multidirectional switching valve 14b is switched to the hot water storage tank 1a side,
The drain valves 18a and 18b are closed. Water taken from a water inlet 7b at a lower portion of the hot water storage tank 1b is circulated through a multi-way switching valve 14a, a pump 15, and a hot water supply heat exchanger 11 by a hot water storage pump 15, and a circulating hot water supply port 8b at an upper portion of the hot water storage tank 1b. Then, the water enters the hot water storage tank 1b again. On the other hand, city water that has entered by water pressure from the water supply pipe 4 connected to the water supply pipe enters the water supply port 2a at the lower part of the hot water storage tank 1a through the multi-way switching valve 14b, and removes the hot water in the hot water storage tank 1a. Hot water is supplied from the hot water supply pipe 5 by being pushed out from the hot water supply port 3a at the upper part of the hot water storage tank 1a.
【0021】なお、メンテナンス等で、貯湯タンク内の
水を捨てる場合、排水弁18a,18bを開状態にす
る。また、全ての沸上げ運転において、冬場や冬場と夏
場以外の中間期など必要給湯熱量が多い時は、ヒートポ
ンプ給湯運転の後に、必要給湯熱量に応じて一部の貯湯
タンクあるいは全ての貯湯タンクを、電気ヒータ25
a,25bによる加熱運転を行い、必要給湯熱量をカバ
ーする。When the water in the hot water storage tank is discarded for maintenance or the like, the drain valves 18a and 18b are opened. In addition, in all boiling operations, when the required amount of hot water supply is large, such as in winter or in the interim period other than winter and summer, after the heat pump hot water supply operation, some or all of the hot water storage tanks are required depending on the required amount of hot water supply. , Electric heater 25
a, 25b to cover the required hot water supply heat.
【0022】以上のように、本実施例では、昼間の冷房
排熱を利用したヒートポンプにより、連続的に沸上げ運
転を行いながら、同時に連続して貯湯タンクから出湯す
ることができ貯湯タンク間の湯の置換を行う必要もなく
効率的な給湯運転ができると共に、各貯湯タンクが独立
した構成となっているので、もし一部の貯湯タンクが腐
食などで使用不可能となっても他の貯湯タンクによって
給湯機能が維持でき高い信頼性が得られる。また、各貯
湯タンクに設けられた電気ヒータにより必要給湯熱量に
応じ全ての貯湯タンクの沸上げ温度を自由に設定できる
ため、冬場のように必要給湯量が多い場合は、全ての貯
湯タンクを高温に沸上げることができかつ貯湯タンクの
必要容量を減らしコンパクト化することができる。ま
た、春と秋のように必要給湯量が比較的少ない場合は、
一部の貯湯タンクのみ電気ヒータによる高温沸上げを行
い、他の貯湯タンクは低温湯として、用途により使い分
けることもできる。また、全てのタンクが同じ構造とな
っているため、量産性が良いという効果がある。As described above, in the present embodiment, it is possible to continuously discharge water from the hot water storage tank at the same time while continuously performing the boiling operation by the heat pump utilizing the cooling exhaust heat in the daytime. Efficient hot water supply operation can be performed without the need to replace hot water, and each hot water storage tank has an independent configuration, so even if some hot water storage tanks become unusable due to corrosion, other hot water storage tanks can be used. The hot water supply function can be maintained by the tank, and high reliability can be obtained. In addition, since the boiling temperature of all the hot water storage tanks can be set freely according to the required amount of hot water by the electric heater provided in each hot water storage tank, when the required hot water supply amount is large as in winter, all the hot water storage tanks are heated to a high temperature. It is possible to reduce the required capacity of the hot water storage tank and make it compact. Also, if the required hot water supply is relatively small, such as in spring and autumn,
Only some of the hot water storage tanks are heated at a high temperature by an electric heater, and the other hot water storage tanks can be used as low-temperature hot water depending on the application. In addition, since all tanks have the same structure, there is an effect that mass productivity is good.
【0023】実施例2.図8は他の実施例の構成を示
す。図において、1a,1bは貯湯タンク、9は加熱用
往管、10は加熱用復管、11は給湯用熱交換器、14
a,14bは多方向切換弁、15は循環ポンプ、17
a,17bは貯湯タンク1a,1bの排水口、18a,
18bは排水弁、19a,19bは貯湯タンク1a,1
bの給水口、20a,20bは貯湯タンク1a,1bの
給湯口、25a,25bは電気ヒータである。Embodiment 2 FIG. FIG. 8 shows the configuration of another embodiment. In the figure, 1a and 1b are hot water storage tanks, 9 is a forward pipe for heating, 10 is a return pipe for heating, 11 is a heat exchanger for hot water supply, 14
a and 14b are multi-directional switching valves, 15 is a circulating pump, 17
a, 17b are drainage ports of hot water storage tanks 1a, 1b, 18a,
18b is a drain valve, 19a and 19b are hot water storage tanks 1a and 1
b is a water supply port, 20a and 20b are hot water supply tanks 1a and 1b, and 25a and 25b are electric heaters.
【0024】次に動作について説明する。この発明のヒ
ートポンプ式給湯装置には、6つの運転モードがあり、
以下に各運転モードについて動作を説明する。 (1)貯湯タンク1a沸上げ運転 図9によって説明を行う。貯湯タンク1a沸上げ運転時
には、多方向切換弁14aを貯湯タンク1a側に切換
え、多方向切換弁14bを貯湯タンク1b側に切換え、
排水弁18a,18bを閉止の状態とする。貯湯タンク
1aの下部にある取水口19aより取水された水は、ポ
ンプ15により多方向切換弁14a、ポンプ15、給湯
用熱交換器11を循環し、貯湯タンク1aの上部の給湯
口20aより再び貯湯タンク1aに入る。Next, the operation will be described. The heat pump water heater of the present invention has six operation modes,
The operation of each operation mode will be described below. (1) Hot Water Storage Tank 1a Boiling Operation A description will be given with reference to FIG. During the boiling operation of the hot water storage tank 1a, the multidirectional switching valve 14a is switched to the hot water storage tank 1a side, and the multidirectional switching valve 14b is switched to the hot water storage tank 1b side,
The drain valves 18a and 18b are closed. The water taken from the water inlet 19a at the lower part of the hot water storage tank 1a is circulated through the multi-way switching valve 14a, the pump 15 and the hot water supply heat exchanger 11 by the pump 15, and is again returned from the hot water supply opening 20a at the upper part of the hot water storage tank 1a. It enters hot water storage tank 1a.
【0025】(2)貯湯タンク1b沸上げ運転 図10によって説明を行う。貯湯タンク1b沸上げ運転
時には、多方向切換弁14aを貯湯タンク1b側に切換
え、多方向切換弁14bを貯湯タンク1a側に切換え、
排水弁18a,18bを閉止の状態とする。貯湯タンク
1bの下部にある取水口19bより取水された水は、ポ
ンプ15により多方向切換弁14a、ポンプ15、給湯
用熱交換器11を循環し、貯湯タンク1bの上部の給湯
口20bより再び貯湯タンク1bに入る。(2) Boiling operation of hot water storage tank 1b This will be described with reference to FIG. During the boiling operation of the hot water storage tank 1b, the multi-way switching valve 14a is switched to the hot water storage tank 1b side, and the multi-directional switching valve 14b is switched to the hot water storage tank 1a side,
The drain valves 18a and 18b are closed. The water taken from the water inlet 19b at the lower part of the hot water storage tank 1b is circulated by the pump 15 through the multi-way switching valve 14a, the pump 15, and the heat exchanger 11 for hot water supply, and again from the hot water inlet 20b at the upper part of the hot water storage tank 1b. It enters hot water storage tank 1b.
【0026】(3)貯湯タンク1a出湯運転 図11によって説明を行う。貯湯タンク1a出湯運転時
には、多方向切換弁14aを貯湯タンク1b側に切換
え、多方向切換弁14bを貯湯タンク1a側に切換え、
排水弁18a,18bを閉止、ポンプ15を停止の状態
とする。水道配管につながった給水配管4から水道圧に
よって入ってきた市水は、多方向切換弁14bを通って
貯湯タンク1aの下部にある給水口19aに入り、貯湯
タンク1a内の加熱湯を貯湯タンク1aの上部にある給
湯口20aより押し出すことで、出湯配管5より出湯を
行う。(3) Hot Water Storage Tank 1a Hot Water Driving Operation This will be described with reference to FIG. At the time of hot water storage tank 1a tapping operation, the multidirectional switching valve 14a is switched to the hot water storage tank 1b side, and the multidirectional switching valve 14b is switched to the hot water storage tank 1a side,
The drain valves 18a and 18b are closed, and the pump 15 is stopped. City water that has entered by the water pressure from the water supply pipe 4 connected to the water supply pipe enters the water supply port 19a at the lower part of the hot water storage tank 1a through the multi-way switching valve 14b, and the heated hot water in the hot water storage tank 1a is stored in the hot water storage tank. Hot water is supplied from the hot water supply pipe 5 by being pushed out from the hot water supply port 20a at the upper part of 1a.
【0027】(4)貯湯タンク1b出湯運転 図12によって説明を行う。貯湯タンク1b出湯運転時
には、多方向切換弁14aを貯湯タンク1a側に切換
え、多方向切換弁14bを貯湯タンク1b側に切換え、
排水弁18a,18bを閉止、ポンプ15を停止の状態
とする。水道配管につながった給水配管4から水道圧に
よって入ってきた市水は、多方向切換弁14bを通って
貯湯タンク1bの下部にある給水口19bに入り、貯湯
タンク1b内の加熱湯を貯湯タンク1bの上部にある給
湯口20bより押し出すことで、出湯配管5より出湯を
行う。(4) Hot-water storage tank 1b hot-water tapping operation This will be described with reference to FIG. During the hot-water storage tank 1b hot-water discharge operation, the multi-directional switching valve 14a is switched to the hot-water storage tank 1a side, and the multi-directional switching valve 14b is switched to the hot-water storage tank 1b side.
The drain valves 18a and 18b are closed, and the pump 15 is stopped. City water that has entered by water pressure from the water supply pipe 4 connected to the water supply pipe enters the water supply port 19b at the lower part of the hot water storage tank 1b through the multi-way switching valve 14b, and the heated hot water in the hot water storage tank 1b is stored in the hot water storage tank. Hot water is supplied from the hot water supply pipe 5 by being pushed out from the hot water supply port 20b at the upper part of 1b.
【0028】(5)貯湯タンク1a沸上げ及び貯湯タン
ク1b出湯同時運転 図13によって説明を行う。貯湯タンク1aの沸上げ運
転時には、多方向切換弁14aを貯湯タンク1a側に切
換え、多方向切換弁14bを貯湯タンク1b側に切換
え、排水弁18a,18bを閉止の状態とする。貯湯タ
ンク1aの下部にある取水口19aより取水された水
は、ポンプ15により多方向切換弁14a、ポンプ1
5、給湯用熱交換器11を循環し、貯湯タンク1aの上
部の給湯口20aより再び貯湯タンク1aに入る。一
方、水道配管につながった給水配管4から水道圧によっ
て入ってきた市水は、多方向切換弁14bを通って貯湯
タンク1bの下部にある給水口19bに入り、貯湯タン
ク1b内の加熱湯を貯湯タンク1bの上部にある給湯口
20bより押し出すことで、出湯配管5より出湯を行
う。(5) Simultaneous boiling of hot water storage tank 1a and hot water storage tank 1b operation will be described with reference to FIG. During the boiling operation of the hot water storage tank 1a, the multidirectional switching valve 14a is switched to the hot water storage tank 1a side, the multidirectional switching valve 14b is switched to the hot water storage tank 1b side, and the drain valves 18a and 18b are closed. The water taken from the water inlet 19a at the lower part of the hot water storage tank 1a is supplied by the pump 15 to the multi-directional switching valve 14a, the pump 1
5. Circulate through the hot water supply heat exchanger 11 and re-enter the hot water storage tank 1a through the hot water supply port 20a at the top of the hot water storage tank 1a. On the other hand, city water that has entered by water pressure from the water supply pipe 4 connected to the water supply pipe enters the water supply port 19b at the lower part of the hot water storage tank 1b through the multi-way switching valve 14b, and removes the hot water in the hot water storage tank 1b. Hot water is supplied from the hot water supply pipe 5 by being pushed out from the hot water supply port 20b at the upper part of the hot water storage tank 1b.
【0029】(6)貯湯タンク1b沸上げ及び貯湯タン
ク1a出湯同時運転 図14によって説明を行う。貯湯タンク1bの沸上げ運
転時には、多方向切換弁14aを貯湯タンク1b側に切
換え、多方向切換弁14bを貯湯タンク1a側に切換
え、排水弁18a,18bを閉止の状態とする。貯湯タ
ンク1bの下部にある取水口19bより取水された水
は、貯湯ポンプ15により多方向切換弁14a、ポンプ
15、給湯用熱交換器11を循環し、貯湯タンク1bの
上部の給湯口20bより再び貯湯タンク1bに入る。一
方、水道配管につながった給水配管4から水道圧によっ
て入ってきた市水は、多方向切換弁14bを通って貯湯
タンク1aの下部にある給水口19aに入り、貯湯タン
ク1a内の加熱湯を貯湯タンク1aの上部にある給湯口
20aより押し出すことで、出湯配管5より出湯を行
う。なお、メンテナンス等で、貯湯タンク内の水を捨て
る場合、排水弁18a,18bを開状態にする。(6) Simultaneous Boiling of Hot Water Storage Tank 1b and Simultaneous Operation of Hot Water from Hot Water Storage Tank 1a Explanation will be given with reference to FIG. During the boiling operation of the hot water storage tank 1b, the multi-way switching valve 14a is switched to the hot water storage tank 1b side, the multi-directional switching valve 14b is switched to the hot water storage tank 1a side, and the drain valves 18a and 18b are closed. Water taken from a water inlet 19b at the lower part of the hot water storage tank 1b is circulated through a multi-way switching valve 14a, a pump 15, and a hot water supply heat exchanger 11 by a hot water storage pump 15, and from a hot water supply opening 20b at an upper part of the hot water storage tank 1b. It enters the hot water storage tank 1b again. On the other hand, city water that has entered by water pressure from the water supply pipe 4 connected to the water supply pipe enters the water supply port 19a at the lower part of the hot water storage tank 1a through the multi-way switching valve 14b, and removes the hot water in the hot water storage tank 1a. Hot water is supplied from the hot water supply pipe 5 by being pushed out from the hot water supply port 20a at the upper part of the hot water storage tank 1a. When the water in the hot water storage tank is discarded for maintenance or the like, the drain valves 18a and 18b are opened.
【0030】また、全ての沸上げ運転において、冬場な
ど必要給湯熱量が多い冬場などは、ヒートポンプ給湯運
転の後に、必要給湯熱量に応じて一部の貯湯タンクある
いは全ての貯湯タンクを、電気ヒータ25a,25bに
よる加熱運転を行い、必要給湯熱量をカバーする。In all the boiling operations, such as in winter, when a large amount of hot water is required, such as in winter, after the heat pump hot water supply operation, some or all of the hot water storage tanks are replaced with electric heaters 25a in accordance with the required amount of hot water. , 25b to cover the required amount of hot water supply.
【0031】以上のように本実施例では、水道からの給
水口とポンプの取水口を兼用させ、給湯口とポンプから
の給水口を兼用させることによって、タンクより引き出
す配管の数を減らすことが可能で量産性が良いという効
果があり、この他、実施例1と同じ効果がある。As described above, in the present embodiment, the number of pipes drawn from the tank can be reduced by using the water supply port from the water supply and the pump as the water intake and the water supply from the pump as the water supply. There is an effect that it is possible and mass production is good, and in addition, it has the same effect as the first embodiment.
【0032】実施例3.図15は他の実施例の構成を示
す。図において、図1と同一符号は同一または相当部分
を示し、その詳細説明を省略する。26a,26b,2
6cは貯湯タンク1aの湯温検知用のサーミスタ、26
d,26e,26fは貯湯タンク1bの湯温検知用のサ
ーミスタであり、このサーミスタで検知された温度によ
り、貯湯タンクの沸上げと出湯の制御を行うマイクロコ
ンピュータ(図示せず)により構成される。Embodiment 3 FIG. FIG. 15 shows the configuration of another embodiment. In the figure, the same reference numerals as those in FIG. 1 denote the same or corresponding parts, and a detailed description thereof will be omitted. 26a, 26b, 2
6c is a thermistor for detecting the hot water temperature of the hot water storage tank 1a, 26
Reference numerals d, 26e, and 26f denote thermistors for detecting the temperature of the hot water in the hot water storage tank 1b, and are constituted by microcomputers (not shown) that control the boiling and hot water supply of the hot water storage tank based on the temperature detected by the thermistor. .
【0033】次に動作について図16,17によって説
明する。図16はマイクロコンピュータによる制御手順
を示すフローチャート、図17は貯湯タンクの運転状況
を示す。図16において、ステップST50で給湯温度
TS を設定し、ステップST51で貯湯タンク1aの温
度が設定温度TS 未満であればステップST51に進み
貯湯タンク1a出湯不可となり、ステップST52に進
み貯湯タンク1aの沸上げ運転を行い、ステップST5
1に戻る。ステップST51で貯湯タンク1aの温度が
設定温度TS 以上であれば、ステップST53に進み、
貯湯タンク1aが出湯可となり、この時点で貯湯タンク
1bに切換わり、ステップST54で貯湯タンク1bの
温度が設定温度TS 未満であればステップST55に進
み貯湯タンク1b出湯不可となり、ステップST56に
進み貯湯タンク1bの沸上げ運転を行い、ステップST
54に戻る。ステップST54で、貯湯タンク1bの温
度が設定温度TS 以上であればステップST57に進
み、貯湯タンク1bが出湯可となり、この時点で貯湯タ
ンク1aに切換わりステップST51に戻る。また、出
湯運転については、貯湯タンク1aから出湯している時
に、貯湯タンク1aの所定の個所の温度が設定温度TS
以下となり、残湯量が少なくなったことを検知し、貯湯
タンク1bに切換わり連続して出湯する。Next, the operation will be described with reference to FIGS. FIG. 16 is a flowchart showing a control procedure by the microcomputer, and FIG. 17 shows an operation state of the hot water storage tank. In FIG. 16, hot water supply temperature T S is set in step ST50, and in step ST51, if the temperature of hot water storage tank 1a is lower than set temperature T S , the flow proceeds to step ST51, and hot water storage tank 1a cannot be discharged. Is performed in step ST5.
Return to 1. If the temperature of the hot water storage tank 1a is equal to or higher than the set temperature T S in step ST51, the process proceeds to step ST53,
Hot water storage tank 1a is ready for hot water supply. At this point, the mode is switched to hot water storage tank 1b. If the temperature of hot water storage tank 1b is lower than set temperature T S in step ST54, the flow proceeds to step ST55. The boiling operation of hot water storage tank 1b is performed, and step ST
Return to 54. In step ST54, if the temperature of the hot water storage tank 1b is equal to or higher than the set temperature T S , the process proceeds to step ST57, in which the hot water storage tank 1b is ready for tapping, and at this time, the hot water storage tank 1a is switched to return to step ST51. In the hot water supply operation, when the hot water is being supplied from the hot water storage tank 1a, the temperature at a predetermined location of the hot water storage tank 1a is set to the set temperature T S.
Then, it is detected that the amount of remaining hot water has decreased, and the hot water is switched to the hot water storage tank 1b to continuously discharge hot water.
【0034】以上の制御による貯湯タンクの運転状況に
ついて図17に示す。沸上げ運転は図17(a)に示す
ように貯湯タンク1aより行い、サーミスタ26a,2
6b,26cによって貯湯タンク1a内の湯温が設定温
度TS になったことを検知したら、図17(b)に示す
ように沸上げ運転が貯湯タンク1bに切換わる。貯湯タ
ンク1b内のサーミスタ26d,26e,26fにより
貯湯タンク1b内の湯温が設定温度TS になったことを
検知したら沸上げ運転を終了し、貯湯タンク1aに切換
わる。次に、出湯運転は図17(c)に示すように貯湯
タンク1aより行い、サーミスタ26a,26b,26
cのいずれかにより検出した温度により、貯湯タンク1
a内の残湯量が少なくなったことを検知したら、図17
(d)に示すように出湯運転が貯湯タンク1bに切換わ
る。貯湯タンク1b内のサーミスタ26d,26e,2
6fのいずれかにより検出した温度によって、貯湯タン
ク1b内の残湯量がある量よりも少なくなったことを検
知したら、図17(e)に示すように貯湯タンク1aの
沸上げ運転が行われ、ヒートポンプ方式は連続的に沸上
げができるので貯湯タンク1a,1bを交互に連続的に
沸上げ、湯切れを防止することができる。FIG. 17 shows the operation of the hot water storage tank under the above control. The boiling operation is performed from the hot water storage tank 1a as shown in FIG.
When it is detected by 6b and 26c that the temperature of the hot water in the hot water storage tank 1a has reached the set temperature T S , the boiling operation is switched to the hot water storage tank 1b as shown in FIG. When the thermistors 26d, 26e and 26f in the hot water storage tank 1b detect that the temperature of the hot water in the hot water storage tank 1b has reached the set temperature T S , the boiling operation is terminated and the mode is switched to the hot water storage tank 1a. Next, the tapping operation is performed from the hot water storage tank 1a as shown in FIG. 17 (c), and the thermistors 26a, 26b, 26
c, the hot water storage tank 1
If it is detected that the amount of remaining hot water in a has decreased,
As shown in (d), the tapping operation is switched to the hot water storage tank 1b. Thermistors 26d, 26e, 2 in hot water storage tank 1b
6f, when it is detected that the amount of remaining hot water in the hot water storage tank 1b is smaller than a certain amount, the boiling operation of the hot water storage tank 1a is performed as shown in FIG. Since the heat pump system can continuously boil, the hot water storage tanks 1a and 1b can be alternately and continuously boiled to prevent running out of hot water.
【0035】実施例4.本実施例は、実施例1に示した
ように冬場、夏場及びそれ以外の季節による必要給湯熱
量に応じ、図1に示した加熱用熱交換器11と電気ヒー
タ25a,25bによる沸上げ運転ができるが、この季
節による沸上げ運転をタンク近傍の外気を検出する外気
温度検知用サーミスタ(図示せず)とマイクロコンピュ
ータ(図示せず)により自動的に制御するものであり、
図18のフローチャートにより説明する。図において、
ステップST60で冬場の設定外気温度TS1と夏場の設
定外気温度TS2を入力する。ステップST61では外気
温度Tout を測定し、ステップST62に進み、外気温
度Tout が、冬場の設定外気温度TS1未満であれば、ス
テップST63に進み冬場の必要給湯熱量大となり、ス
テップST64に進み、貯湯タンク1a,1bの両タン
クをヒートポンプと電気ヒータによる高温沸上げを行
う。ステップST62で外気温度Tout が、冬場の設定
外気温度TS1以上であれば、ステップST65に進み、
外気温度Tout が、夏場の設定外気温度TS2を越えれ
ば、ステップST66に進み夏場の必要給湯熱量小とな
り、ステップST67に進み、貯湯タンク1a,1bの
両タンクをヒートポンプのみで沸上げを行う。ステップ
ST65で外気温度Tout が夏場の設定外気温度TS2以
下であればステップST68に進み、冬場と夏場以外の
中間期の必要給湯熱量中となり、ステップST69に進
み、貯湯タンク1a,1bのいずれか一方をヒートポン
プと電気ヒータによる沸上げを行い、もう一方の貯湯タ
ンクはヒートポンプのみの沸上げを行う。Embodiment 4 FIG. In the present embodiment, as shown in the first embodiment, the boiling operation by the heating heat exchanger 11 and the electric heaters 25a and 25b shown in FIG. 1 is performed in accordance with the required hot water supply heat amount in winter, summer and other seasons. It is possible to automatically control the seasonal boiling operation by an outside air temperature detecting thermistor (not shown) for detecting outside air near the tank and a microcomputer (not shown),
This will be described with reference to the flowchart of FIG. In the figure,
In step ST60, the set outside air temperature T S1 in winter and the set outside air temperature T S2 in summer are input. Step ST61 to measure the outside air temperature T out in, the process proceeds to step ST62, the outside air temperature T out is, is less than the winter setting the outside air temperature T S1, will winter required hot water supply heat large proceeds to step ST63, the process proceeds to step ST64 Then, both the hot water storage tanks 1a and 1b are heated to a high temperature by a heat pump and an electric heater. If the outside air temperature T out is equal to or higher than the set outside air temperature T S1 in winter in step ST62, the process proceeds to step ST65,
If the outside air temperature T out exceeds the set outside air temperature T S2 in the summer, the process proceeds to step ST66 and the required hot water supply heat amount in the summer is reduced, and the process proceeds to step ST67 to boil both the hot water storage tanks 1a and 1b using only the heat pump. . If the outside air temperature T out is below summer set outside air temperature T S2 at step ST65 proceeds to step ST 68, becomes in need hot water supply heat in winter and interim non summer, the process proceeds to step ST69, the hot water storage tank 1a, 1b any One of them is heated by a heat pump and an electric heater, and the other hot water storage tank is heated only by a heat pump.
【0036】以上のように沸上げが制御されるので、冬
場のように必要給湯熱量が多い場合は、全ての貯湯タン
クを自動的に高温に沸上げることができ、冬場と夏場以
外の中間期に必要給湯量が比較的少ない場合は、一部の
貯湯タンクのみ電気ヒータによる高温沸上げを自動的に
行い、他の貯湯タンクは低温湯として、用途により使い
分けることもできる。また、必要給湯熱量が多い場合
は、全てのタンクをヒータによる高温沸上げすること
で、槽の必要容量を減らし、コンパクト化することがで
きる。Since the boiling is controlled as described above, all the hot water storage tanks can be automatically heated to a high temperature when the required hot water supply amount is large, such as in winter, and the intermediate period other than winter and summer can be achieved. When the required hot water supply amount is relatively small, only a part of the hot water storage tanks can be automatically heated to a high temperature by an electric heater, and the other hot water storage tanks can be used as low-temperature hot water depending on the application. When the required hot water supply heat is large, all the tanks are heated to a high temperature by the heater, so that the required capacity of the tanks can be reduced and the tanks can be made compact.
【0037】実施例5.実施例5を図19(a)、19
(b)により説明する。図19(a)は本実施例5の構
成を示し、図19(b)は部分平面図を示す。図におい
て図1と同一符号は同一または相当部分を示しその詳細
な説明を省略する。27は貯湯タンクの中間に設けた穴
のあいた仕切板である。Embodiment 5 FIG. FIG. 19A and FIG.
This will be described with reference to FIG. FIG. 19A shows the configuration of the fifth embodiment, and FIG. 19B shows a partial plan view. In the figure, the same reference numerals as those in FIG. 1 denote the same or corresponding parts, and a detailed description thereof will be omitted. 27 is a perforated partition plate provided in the middle of the hot water storage tank.
【0038】次に動作について図20により説明する。
本例は貯湯タンク1a沸上げ運転及び貯湯タンク1a出
湯同時運転を行うものであり、先ず多方向切換弁14を
貯湯タンク1a側に、多方向切換弁14bを貯湯タンク
1b側に、排水弁18a,18bを閉止とする。貯湯タ
ンク1aの下部の取水口7aより取水された水はポンプ
15により多方向切換弁14a、ポンプ15、給湯用熱
交換器11を循環し、貯湯タンク1aの上の給水口8a
より再び貯湯タンク1aに入る。この循環を数回行って
沸上げた後に、多方向切換弁14bを貯湯タンク1a側
に切換えることにより、水道配管につながった給水配管
4から水道圧によって入ってきた市水は、多方向切換弁
14bを通って貯湯タンク1aの下部にある給水口2a
に入り貯湯タンク1a内の加熱湯を押し上げ、貯湯タン
ク1aの上部にある給湯口3aより押し出し、出湯配管
5より出湯を行う。仕切板27は、貯湯タンク下部の給
水口2aから入った水が、上部の給湯口3aからでない
ように作用する。Next, the operation will be described with reference to FIG.
In this embodiment, the boiling operation of the hot water storage tank 1a and the simultaneous operation of tapping out of the hot water storage tank 1a are performed. First, the multidirectional switching valve 14 is set to the hot water storage tank 1a side, the multidirectional switching valve 14b is set to the hot water storage tank 1b side, and the drain valve 18a. , 18b are closed. Water taken from the water intake 7a at the lower part of the hot water storage tank 1a is circulated by the pump 15 through the multi-way switching valve 14a, the pump 15, and the hot water supply heat exchanger 11, and the water supply 8a on the hot water storage tank 1a.
Then, the water enters the hot water storage tank 1a again. After the circulation is performed several times and the water is boiled, the multi-way switching valve 14b is switched to the hot water storage tank 1a side, so that city water that has entered by the water supply pressure from the water supply pipe 4 connected to the water supply pipe is subjected to the multi-way switching valve. Water supply port 2a at the bottom of hot water storage tank 1a through 14b
The hot water in the hot water storage tank 1a is pushed up, pushed out from the hot water supply port 3a at the top of the hot water storage tank 1a, and the hot water is discharged from the hot water supply pipe 5. The partition plate 27 acts so that water entering from the water supply port 2a at the lower part of the hot water storage tank does not flow from the water supply port 3a at the upper part.
【0039】以上のように本実施例では、沸上げ運転を
行っていながら、同時に同じ貯湯タンクから出湯するこ
とができ、効率的な給湯運転ができる。As described above, in the present embodiment, hot water can be simultaneously discharged from the same hot water storage tank while the boiling operation is being performed, and an efficient hot water supply operation can be performed.
【0040】実施例6.実施例1では貯湯タンクが二つ
の場合を示したが、本実施例は貯湯タンクが三つの場合
であり、図21に構成を示す。図において、図1と同一
符号は同一または相当部分を示し、その詳細な説明を省
略する。1cは貯湯タンク、2cは水道から貯湯タンク
への給水口、3cは貯湯タンク1cの給湯口、7cは貯
湯タンク1cの取水口、8cはポンプ15から貯湯タン
ク1cへのポンプからの給湯口、17cは貯湯タンク1
cの排水口、18cは排水弁、25cは電気ヒータであ
る。Embodiment 6 FIG. Although the first embodiment shows the case where there are two hot water storage tanks, the present embodiment shows a case where there are three hot water storage tanks, and FIG. 21 shows the configuration. In the figure, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts, and a detailed description thereof will be omitted. 1c is a hot water storage tank, 2c is a water supply port from the tap water to the hot water storage tank, 3c is a hot water supply port of the hot water storage tank 1c, 7c is a water intake port of the hot water storage tank 1c, 8c is a hot water supply port from the pump from the pump 15 to the hot water storage tank 1c, 17c is hot water storage tank 1
A drain port c, a drain valve 18c, and an electric heater 25c.
【0041】次に動作について説明する。貯湯タンク1
cの沸上げ運転は、多方向切換弁14aを貯湯タンク1
c側に切換え、多方向切換弁14b貯湯タンク1a側ま
たは1b側に切換え、排水弁18a,18b及び18c
を閉止の状態とする。貯湯タンク1cの下部にある取水
口7cより取水された水は、ポンプ15により多方向切
換弁14a、ポンプ15、給湯用熱交換器11を循環
し、貯湯タンク1cの上部の循環給湯口8cにより再び
貯湯タンク1cに入る。Next, the operation will be described. Hot water storage tank 1
c, the multi-way switching valve 14a is connected to the hot water storage tank 1
c side, the multi-way switching valve 14b is switched to the hot water storage tank 1a side or 1b side, and the drain valves 18a, 18b and 18c
Is closed. The water taken from the water inlet 7c at the lower part of the hot water storage tank 1c is circulated by the pump 15 through the multi-directional switching valve 14a, the pump 15 and the hot water supply heat exchanger 11, and is circulated by the circulating hot water supply port 8c at the upper part of the hot water storage tank 1c. It enters the hot water storage tank 1c again.
【0042】貯湯タンク1cの出湯運転は、多方向切換
弁14aを貯湯タンク1aまたは1b側に切換え、多方
向切換弁14bを貯湯タンク1c側に切換え、排水弁1
8a,18b及び18cを閉止し、ポンプ15を停止と
する。水道配管につながった給水配管4が水道圧によっ
て入ってきた市水は、多方向切換弁14bを通って貯湯
タンク1cの下部にある給水口2cに入り、タンク1c
内の加熱湯を押し上げ、貯湯タンク1cの上部にある給
湯口3cより押し出すことで、出湯配管5より出湯を行
う。The tapping operation of the hot water storage tank 1c switches the multi-way switching valve 14a to the hot water storage tank 1a or 1b side, switches the multi-way switching valve 14b to the hot water storage tank 1c side, and sets the drain valve 1
8a, 18b and 18c are closed, and the pump 15 is stopped. City water that has entered the water supply pipe 4 connected to the water supply pipe due to tap water pressure enters the water supply port 2c at the lower part of the hot water storage tank 1c through the multi-way switching valve 14b, and the tank 1c
The hot water in the inside is pushed up and pushed out from the hot water supply port 3c at the upper part of the hot water storage tank 1c, so that hot water is discharged from the hot water supply pipe 5.
【0043】沸上げと同時に行う出湯運転は実施例1で
の貯湯タンク1a沸上げ及び貯湯タンク1b出湯同時運
転と、貯湯タンク1b沸上げ貯湯タンク1a出湯同時運
転が実施できるほかに、貯湯タンク1a沸上げ及び貯湯
タンク1c出湯同時運転と、貯湯タンク1b沸上げ及び
貯湯タンク1c出湯同時運転と、貯湯タンク1c沸上げ
及び貯湯タンク1b出湯同時運転と、貯湯タンク1c沸
上げ及び貯湯タンク1a出湯同時運転が実施例1と同様
な動作で可能である。The tapping operation performed at the same time as the boiling operation can be performed simultaneously with the boiling operation of the hot water storage tank 1a and the simultaneous operation of the hot water storage tank 1b and the hot water storage tank 1b in the first embodiment. Simultaneous operation of boiling water and hot water storage tank 1c, simultaneous operation of boiling hot water storage tank 1b and simultaneous operation of hot water storage tank 1c, simultaneous operation of boiling hot water storage tank 1c and simultaneous operation of hot water storage tank 1b, simultaneous boiling of hot water storage tank 1c and simultaneous operation of hot water storage tank 1a. Operation is possible by the same operation as in the first embodiment.
【0044】以上のように本実施例では、貯湯タンクの
数が実施例1より多いため貯湯容量が大きくなり、多量
の給湯ができると共に、連続的に沸かし、同時に連続的
に出湯ができる。As described above, in the present embodiment, since the number of hot water storage tanks is larger than that in the first embodiment, the hot water storage capacity is increased, a large amount of hot water can be supplied, and the hot water can be continuously boiled and simultaneously hot water can be continuously discharged.
【0045】[0045]
【発明の効果】この発明によるヒートポンプ式給湯装置
は、ヒートポンプシステムによる加熱部と各貯湯タンク
を連結し加熱部へ前記各貯湯タンクの水を循環させ沸上
げを行う循環系と、各貯湯タンク下部に接続された貯湯
タンクへ給水を行う給水系と、各貯湯タンク上部に接続
され貯湯タンクから給湯を行う給湯系と、各貯湯タンク
内に配設された加熱を行う加熱用ヒータと、循環系の加
熱部と各貯湯タンクを切換える第1の多方向切換弁と、
給水系を各貯湯タンクに切換える第2の多方向切換弁と
を備え、前記第1の多方向切換弁の切換えにより開路さ
れた一方の貯湯タンクを沸上げ運転をすると共に、前記
第2の多方向切換弁の切換えにより開路された他の貯湯
タンクを給水及び出湯運転を行うので、連続的に沸上げ
運転を行いながら、同時に連続的に出湯することができ
効率的な給湯運転ができるとともに、一部の貯湯タンク
が使用不可能となっても他の貯湯タンクによって給湯機
能が維持でき高い信頼性が得られる。The heat pump type hot water supply apparatus according to the present invention comprises a circulating system for connecting a heating unit of the heat pump system and each hot water storage tank, circulating water in each of the hot water storage tanks to the heating unit and boiling the water, and a lower part of each hot water storage tank. A water supply system for supplying water to the hot water storage tank connected to the hot water storage tank, a hot water supply system for supplying hot water from the hot water storage tank connected to the top of each hot water storage tank, a heating heater for heating provided in each hot water storage tank, and a circulation system A first multi-way switching valve for switching between the heating unit and each hot water storage tank;
A second multi-directional switching valve for switching a water supply system to each hot water storage tank, wherein one of the hot water storage tanks opened by switching the first multi-directional switching valve is operated to be boiled, and the second multi-directional switching valve is operated. Since the other hot water storage tank opened by switching the directional control valve is supplied with water and supplied with hot water, it is possible to perform continuous hot water supply while performing continuous boiling operation, thereby enabling efficient hot water supply operation. Even if some hot water storage tanks become unusable, the hot water supply function can be maintained by other hot water storage tanks, and high reliability can be obtained.
【0046】また、この発明に係るヒートポンプ式給湯
装置は、各貯湯タンク内に配設され湯温を検出する複数
の温度検出手段と、この温度検出手段により検出された
一つの貯湯タンクの湯温が設定温度以下の場合、この貯
湯タンクの沸上げを行い、この一つの貯湯タンクの湯温
が設定温度以上となった場合は、他の貯湯タンクに切換
え、この貯湯タンクの湯温が設定温度以下の場合、この
貯湯タンクの沸上げを行う制御手段と、温度検出手段に
より検出された出湯中の一つの貯湯タンクの所定箇所の
湯温が設定温度以下となった場合、他の貯湯タンクから
の出湯に切換えることにより、湯切れを防止する制御手
段と、を備えたので、連続的に沸上げ運転を行いなが
ら、同時に連続的に出湯することが自動的にでき、湯切
れを防止できる。Further, the heat pump type hot water supply apparatus according to the present invention has a plurality of temperature detecting means arranged in each hot water storage tank for detecting the hot water temperature, and the hot water temperature of one hot water storage tank detected by the temperature detecting means. If the temperature of the hot water storage tank is lower than the set temperature, the hot water storage tank is boiled. In the following case, when the hot water temperature of a predetermined location of one hot water storage tank during the hot water detected by the control means for boiling the hot water storage tank and the temperature detection means becomes equal to or lower than the set temperature, the other hot water storage tank The control means for preventing running out of hot water is provided by switching to hot water, so that hot water can be automatically and continuously discharged simultaneously with continuous boiling operation, and running out of hot water can be prevented.
【0047】また、この発明に係るヒートポンプ式給湯
装置は、貯湯タンクの外部近傍に配設された外気温度を
検出する外気温度検出手段と、加熱の制御手段を設けた
ので、外気温度によりヒートポンプの沸上げ後に全ての
貯湯タンクを電気ヒータによる加熱を行ったり、ヒート
ポンプのみで沸上げたり、また、全ての貯湯タンクをヒ
ートポンプの沸上げ後、一部の貯湯タンクを電気ヒータ
による加熱を自動的に行うことができ、必要給湯熱量に
応じた効率的な給湯運転ができる。Further, the heat pump type hot water supply apparatus according to the present invention is provided with an outside air temperature detecting means provided near the outside of the hot water storage tank for detecting the outside air temperature and a heating control means. After boiling, all the hot water storage tanks are heated by an electric heater, or only a heat pump is used for heating, and after all the hot water storage tanks are heated by a heat pump, some hot water storage tanks are automatically heated by an electric heater. The hot water supply operation can be performed efficiently according to the required hot water supply heat quantity.
【図1】この発明の一実施例を示すヒートポンプ式給湯
装置の構成図である。FIG. 1 is a configuration diagram of a heat pump type hot water supply apparatus showing one embodiment of the present invention.
【図2】この発明の一実施例のヒートポンプ式給湯装置
において、貯湯タンク1aの沸上げ運転を示す給湯回路
の系統図である。FIG. 2 is a system diagram of a hot water supply circuit showing a boiling operation of a hot water storage tank 1a in the heat pump hot water supply apparatus according to one embodiment of the present invention.
【図3】この発明の一実施例のヒートポンプ式給湯装置
において、貯湯タンク1bの沸上げ運転を示す給湯回路
の系統図である。FIG. 3 is a system diagram of a hot water supply circuit showing a boiling operation of a hot water storage tank 1b in the heat pump hot water supply apparatus according to one embodiment of the present invention.
【図4】この発明の一実施例のヒートポンプ式給湯装置
において、貯湯タンク1aの出湯運転を示す給湯回路の
系統図である。FIG. 4 is a system diagram of a hot water supply circuit showing a tapping operation of a hot water storage tank 1a in the heat pump hot water supply apparatus according to one embodiment of the present invention.
【図5】この発明の一実施例のヒートポンプ式給湯装置
において、貯湯タンク1bの出湯運転を示す給湯回路の
系統図である。FIG. 5 is a system diagram of a hot water supply circuit showing a hot water discharge operation of a hot water storage tank 1b in the heat pump hot water supply apparatus according to one embodiment of the present invention.
【図6】この発明の一実施例のヒートポンプ式給湯装置
において、貯湯タンク1a沸上げ及び貯湯タンク1b出
湯同時運転を示す給湯回路の系統図である。FIG. 6 is a system diagram of a hot water supply circuit showing simultaneous operation of boiling hot water storage tank 1a and hot water storage tank 1b in the heat pump type hot water supply apparatus of one embodiment of the present invention.
【図7】この発明の一実施例のヒートポンプ式給湯装置
において、貯湯タンク1b沸上げ及び貯湯タンク1aの
出湯同時運転を示す給湯回路の系統図である。FIG. 7 is a system diagram of a hot water supply circuit showing simultaneous operation of boiling the hot water storage tank 1b and tapping the hot water storage tank 1a in the heat pump hot water supply apparatus according to one embodiment of the present invention.
【図8】この発明の他の実施例を示すヒートポンプ式給
湯装置の構成図である。FIG. 8 is a configuration diagram of a heat pump type hot water supply apparatus showing another embodiment of the present invention.
【図9】この発明の他の実施例のヒートポンプ式給湯装
置において、貯湯タンク1aの沸上げ運転を示す給湯回
路の系統図である。FIG. 9 is a system diagram of a hot water supply circuit showing a boiling operation of a hot water storage tank 1a in a heat pump hot water supply apparatus according to another embodiment of the present invention.
【図10】この発明の他の実施例のヒートポンプ式給湯
装置において、貯湯タンク1bの沸上げ運転を示す給湯
回路の系統図である。FIG. 10 is a system diagram of a hot water supply circuit showing a boiling operation of a hot water storage tank 1b in a heat pump hot water supply apparatus according to another embodiment of the present invention.
【図11】この発明の他の実施例のヒートポンプ式給湯
装置において、貯湯タンク1aの出湯運転を示す給湯回
路の系統図である。FIG. 11 is a system diagram of a hot water supply circuit showing a hot water supply operation of hot water storage tank 1a in a heat pump hot water supply apparatus according to another embodiment of the present invention.
【図12】この発明の他の実施例のヒートポンプ式給湯
装置において、貯湯タンク1bの出湯運転を示す給湯回
路の系統図である。FIG. 12 is a system diagram of a hot water supply circuit showing a hot water supply operation of a hot water storage tank 1b in a heat pump hot water supply apparatus according to another embodiment of the present invention.
【図13】この発明の他の実施例のヒートポンプ式給湯
装置において、貯湯タンク1a沸上げ及び貯湯タンク1
b出湯同時運転を示す給湯回路の系統図である。FIG. 13 shows a heat pump type hot water supply apparatus according to another embodiment of the present invention, in which the hot water storage tank 1a is heated and the hot water storage tank 1 is heated.
b is a system diagram of a hot water supply circuit showing simultaneous operation of hot water supply.
【図14】この発明の他の実施例のヒートポンプ式給湯
装置において、貯湯タンク1b沸上げ及び貯湯タンク1
a出湯同時運転を示す給湯回路の系統図である。FIG. 14 is a view showing a heat pump type hot water supply apparatus according to another embodiment of the present invention.
It is a system diagram of the hot-water supply circuit which shows a simultaneous hot-water supply operation.
【図15】この発明の他の実施例を示すヒートポンプ式
給湯装置の構成図である。FIG. 15 is a configuration diagram of a heat pump type hot water supply apparatus showing another embodiment of the present invention.
【図16】この発明の他の実施例の制御を示すフローチ
ャート図である。FIG. 16 is a flowchart illustrating control according to another embodiment of the present invention.
【図17】この発明の他の実施例を示すヒートポンプ式
給湯装置において、運転状況を示す説明図である。FIG. 17 is an explanatory diagram showing an operation state in a heat pump hot water supply apparatus according to another embodiment of the present invention.
【図18】この発明の他の実施例の制御を示すフローチ
ャート図である。FIG. 18 is a flowchart illustrating control according to another embodiment of the present invention.
【図19】(a)はこの発明の他の実施例を示すヒート
ポンプ式給湯装置の構成図である。(b)はこの発明の
他の実施例を示す部分平面図である。FIG. 19 (a) is a configuration diagram of a heat pump type hot water supply apparatus showing another embodiment of the present invention. (B) is a partial plan view showing another embodiment of the present invention.
【図20】この発明の他の実施例のヒートポンプ式給湯
装置において、貯湯タンク1a沸上げ及び貯湯タンク1
a出湯同時運転を示す給湯回路の系統図である。FIG. 20 shows a heat pump type hot water supply apparatus according to another embodiment of the present invention, in which the hot water storage tank 1a is heated and the hot water storage tank 1 is heated.
It is a system diagram of the hot-water supply circuit which shows a simultaneous hot-water supply operation.
【図21】この発明の他の実施例を示すヒートポンプ式
給湯装置の構成図である。FIG. 21 is a configuration diagram of a heat pump hot water supply apparatus showing another embodiment of the present invention.
【図22】従来のヒートポンプ式給湯装置の系統図であ
る。FIG. 22 is a system diagram of a conventional heat pump water heater.
【図23】従来のヒートポンプ式給湯装置の沸上げ工程
を示す説明図である。FIG. 23 is an explanatory view showing a boiling step of a conventional heat pump water heater.
1a,1b 貯湯タンク 2a,2b 水道からの給水口 3a,3b 給湯口 4 給水配管 5 給湯配管 7a,7b 取水口 8a,8b 循環給湯口 9 加熱用往管 10 加熱用復管 11 給湯用熱交換器 14a,14b 多方向切換弁 15 循環ポンプ 17a,17b 排水口 18a,18b 排水弁 19a,19b 給水口 20a,20b 給湯口 25a,25b 電気ヒータ 26a,26b,26c サーミスタ 26d,26e,26f サーミスタ 27 仕切板 1a, 1b Hot water storage tanks 2a, 2b Water supply ports 3a, 3b Water supply ports 4 Water supply pipes 5 Hot water supply pipes 7a, 7b Water intake ports 8a, 8b Circulating water supply ports 9 Outgoing pipe for heating 10 Heating pipe for heating 11 Heat exchange for hot water supply 14a, 14b Multi-directional switching valve 15 Circulating pump 17a, 17b Drainage port 18a, 18b Drainage valve 19a, 19b Water supply port 20a, 20b Water supply port 25a, 25b Electric heater 26a, 26b, 26c Thermistor 26d, 26e, 26f Thermistor 27 Partition Board
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐久間 清 東京都千代田区丸の内二丁目2番3号 三菱電機株式会社内 (72)発明者 岡田 哲治 東京都千代田区丸の内二丁目2番3号 三菱電機株式会社内 (56)参考文献 特開 昭58−110942(JP,A) 実開 平1−97147(JP,U) (58)調査した分野(Int.Cl.7,DB名) F24H 1/18 F24H 1/18 302 F24H 1/00 611 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kiyoshi Sakuma 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Inside Mitsubishi Electric Corporation (72) Inventor Tetsuji Okada 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Incorporated (56) References JP-A-58-110942 (JP, A) JP-A-1-97147 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F24H 1/18 F24H 1/18 302 F24H 1/00 611
Claims (4)
互いに並設された複数の貯湯タンクと、前記加熱部と前
記各貯湯タンクを連結し前記加熱部へ前記各貯湯タンク
の水を循環させ沸上げを行う循環系と、前記各貯湯タン
ク下部に接続され貯湯タンクへ給水を行う給水系と、前
記各貯湯タンク上部に接続され貯湯タンクから給湯を行
う給湯系と、前記各貯湯タンク内に配設された加熱を行
う加熱用ヒータと、前記循環系の前記加熱部下部と前記
各貯湯タンク下部との間に配設され前記各貯湯タンクを
切換える第1の多方向切換弁と、前記給水系の前記各貯
湯タンクへ分岐する分岐点に配設され前記各貯湯タンク
を切換える第2の多方向切換弁と、を備え、前記第1の
多方向切換弁の切換えにより開路された一方の貯湯タン
クを沸上げ運転すると共に、前記第2の多方向切換弁の
切換えにより開路された他の貯湯タンクを給水及び出湯
運転を行うことを特徴とするヒートポンプ式給湯装置。A heating unit provided with a heat pump system;
A plurality of hot water storage tanks arranged in parallel with each other, a circulating system that connects the heating unit and each of the hot water storage tanks, circulates water in each of the hot water storage tanks to the heating unit and performs boiling, and is connected to a lower portion of each of the hot water storage tanks; A hot water supply system for supplying hot water to the hot water storage tank, a hot water supply system connected to the top of each hot water storage tank and supplying hot water from the hot water storage tank, a heating heater for heating provided in each of the hot water storage tanks, and the circulation system A first multidirectional switching valve disposed between the lower portion of the heating section and the lower portion of each of the hot water storage tanks to switch between the hot water storage tanks, and a first branch valve disposed at a branch point of the water supply system that branches to each of the hot water storage tanks. A second multidirectional switching valve for switching between the hot water storage tanks ,
One hot water storage tank opened by switching the multi-way switching valve
Operation of the second multi-way switching valve.
Water supply and tapping of other hot water storage tanks opened by switching
A heat pump type hot water supply device which operates .
出する複数の温度検出手段と、この温度検出手段により
検出された一つの貯湯タンクの湯温が設定温度以下の場
合、この貯湯タンクの沸上げを行い、前記一つの貯湯タ
ンクの湯温が設定温度以上となった場合は、他の貯湯タ
ンクに切換え、この貯湯タンクの湯温が設定温度以下の
場合、前記他の貯湯タンクの沸上げを行う制御手段と、
を備えたことを特徴とする請求項1記載のヒートポンプ
式給湯装置。2. A plurality of temperature detecting means disposed in each of the hot water storage tanks for detecting a hot water temperature, and when the hot water temperature of one hot water storage tank detected by the temperature detecting means is lower than a set temperature, the hot water storage means The tank is boiled, and when the hot water temperature of the one hot water storage tank is higher than a set temperature, the tank is switched to another hot water storage tank. Control means for boiling water;
The heat pump hot water supply device according to claim 1, further comprising:
出する複数の温度検出手段と、この温度検出手段により
検出された出湯中の前記一つの貯湯タンクの所定箇所の
湯温が設定温度以下となった場合、他の貯湯タンクから
の出湯に切換えることにより、湯切れを防止する制御手
段と、を備えたことを特徴とする請求項1記載のヒート
ポンプ式給湯装置。3. A plurality of temperature detecting means arranged in each of the hot water storage tanks for detecting a hot water temperature, and a predetermined hot water temperature of the one hot water storage tank during tapping detected by the temperature detecting means is set. 2. The heat pump type hot water supply apparatus according to claim 1, further comprising control means for preventing running out of hot water by switching to hot water from another hot water storage tank when the temperature falls below the temperature.
気温度を検出する外気温度検出手段と、この外気温度検
出手段により検出された前記貯湯タンクの外部近傍の外
気温度が第1の設定温度以下の場合、ヒートポンプの沸
上げ後に全ての前記貯湯タンクを加熱用ヒータによる加
熱を行い、前記外気温度が第2の設定温度以上の場合、
ヒートポンプのみで沸上げ、前記外気温度が第1の設定
温度以上で第2の設定以下の場合、全ての前記貯湯タン
クをヒートポンプの沸上げ後、一部の前記貯湯タンクを
加熱用ヒータによる加熱を行う制御手段と、を備えたこ
とを特徴とする請求項1記載のヒートポンプ式給湯装
置。4. An outside air temperature detecting means disposed near the outside of the hot water storage tank to detect an outside air temperature, and the outside air temperature near the outside of the hot water storage tank detected by the outside air temperature detecting means is set to a first set temperature. In the following cases, all the hot water storage tanks are heated by a heater after the heat pump is heated, and when the outside air temperature is equal to or higher than a second set temperature,
When only the heat pump boils and the outside air temperature is equal to or higher than the first set temperature and equal to or lower than the second set temperature, all the hot water storage tanks are boiled by the heat pump, and then, some of the hot water storage tanks are heated.
The heat pump hot water supply apparatus according to claim 1, further comprising control means for performing heating by the heating heater.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1155893A JP3173204B2 (en) | 1993-01-27 | 1993-01-27 | Heat pump water heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1155893A JP3173204B2 (en) | 1993-01-27 | 1993-01-27 | Heat pump water heater |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06221673A JPH06221673A (en) | 1994-08-12 |
JP3173204B2 true JP3173204B2 (en) | 2001-06-04 |
Family
ID=11781274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1155893A Expired - Fee Related JP3173204B2 (en) | 1993-01-27 | 1993-01-27 | Heat pump water heater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3173204B2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4972431B2 (en) * | 2007-03-08 | 2012-07-11 | 東京瓦斯株式会社 | Water heater |
JP4877033B2 (en) * | 2007-04-20 | 2012-02-15 | パナソニック電工株式会社 | Hot water system |
JP4920622B2 (en) * | 2008-04-01 | 2012-04-18 | 三菱電機株式会社 | Heat pump water heater |
JP5436075B2 (en) * | 2009-07-07 | 2014-03-05 | 四変テック株式会社 | Hot water system |
JP6458541B2 (en) * | 2014-03-25 | 2019-01-30 | 株式会社ノーリツ | Heat distribution unit for heating circuit |
JP6289440B2 (en) * | 2015-12-22 | 2018-03-07 | 三菱電機株式会社 | Heat pump water heater |
-
1993
- 1993-01-27 JP JP1155893A patent/JP3173204B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH06221673A (en) | 1994-08-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR900000809B1 (en) | Room-warming/cooling and hot-water supplying heat-pump apparatus | |
JPS62108969A (en) | Cooling circuit and operation method | |
JP3811682B2 (en) | Heat pump hot water heater | |
JP2008096044A (en) | Hot water reservoir type hot-water supply device | |
JP3173204B2 (en) | Heat pump water heater | |
JP2002048398A (en) | Heat pump hot water supply apparatus | |
JP3047831B2 (en) | Heat pump system | |
JPH07117290B2 (en) | Water heater | |
KR100563178B1 (en) | Heat pump type hot water supplier | |
JP2004183908A (en) | Heat pump water heater | |
JP3284905B2 (en) | Heat pump system | |
JPH08152193A (en) | Hot water supplying device | |
JP4223468B2 (en) | Hot water storage hot water heater | |
JP3129210B2 (en) | Water heater | |
JPH0227582B2 (en) | ||
JPH0740926Y2 (en) | Water heater | |
JPS621647Y2 (en) | ||
JPH10325640A (en) | Driven by engine | |
JPS58160745A (en) | Hot water supply device | |
JP2850811B2 (en) | Water heater | |
JP3879636B2 (en) | Water heater | |
CN201003855Y (en) | Water-water heat pump water heater using waste hot water as heat source | |
JP2002162116A (en) | Water heater | |
JP3915635B2 (en) | Water heater | |
JPH04106370A (en) | Hot-water supplier |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |