JP5874024B2 - Hot water storage hot water supply system - Google Patents

Hot water storage hot water supply system Download PDF

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JP5874024B2
JP5874024B2 JP2010165829A JP2010165829A JP5874024B2 JP 5874024 B2 JP5874024 B2 JP 5874024B2 JP 2010165829 A JP2010165829 A JP 2010165829A JP 2010165829 A JP2010165829 A JP 2010165829A JP 5874024 B2 JP5874024 B2 JP 5874024B2
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hot water
water storage
storage tank
pipe
boiling
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JP2012026646A (en
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慎也 澤田
慎也 澤田
宏展 堀
堀　　宏展
山脇　信二
信二 山脇
理 芳井
理 芳井
亘彦 戸田
亘彦 戸田
訓 永田
訓 永田
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Panasonic Intellectual Property Management Co Ltd
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Description

本発明は、即湯を行うことができる貯湯式給湯システムに関する。   The present invention relates to a hot water storage type hot water supply system capable of performing instant hot water.

従来から、出湯時に即時に湯を出湯する即湯を行うことができる貯湯式給湯システムがある。この貯湯式給湯システムにおいては、出湯端末と貯湯タンクとを接続する配管内に貯湯タンク内の湯を循環させることにより、配管内の湯水温度を高温に保つようにしている（例えば、特許文献１参照）。   2. Description of the Related Art Conventionally, there is a hot water storage type hot water supply system that can perform immediate hot water that immediately drains hot water at the time of hot water. In this hot water storage type hot water supply system, hot water in the hot water storage tank is circulated in a pipe connecting the hot water outlet terminal and the hot water storage tank so that the hot water temperature in the pipe is kept at a high temperature (for example, Patent Document 1). reference).

この種の貯湯式給湯システムについて、図５を参照して説明する。図中の矢印線は、湯水の循環経路を示している。貯湯式給湯システム１０１は、湯水を貯える貯湯タンク２と、湯水を加熱する熱源機３と、貯湯タンク２に給水する給水配管４と、沸上げられた湯を通す高温出湯配管５と、を備える。貯湯タンク２と熱源機３とは、送り配管６および戻り配管７を介して接続されている。送り配管６には、ポンプ８が設けられている。ポンプ８が駆動されることにより、貯湯タンク２と熱源機３との間で湯水を循環させて湯が沸上げられる。   This type of hot water storage type hot water supply system will be described with reference to FIG. The arrow lines in the figure indicate the hot water circulation path. The hot water storage hot water supply system 101 includes a hot water storage tank 2 for storing hot water, a heat source device 3 for heating the hot water, a water supply pipe 4 for supplying water to the hot water storage tank 2, and a high temperature hot water supply pipe 5 for passing boiled hot water. . The hot water storage tank 2 and the heat source device 3 are connected via a feed pipe 6 and a return pipe 7. The feed pipe 6 is provided with a pump 8. When the pump 8 is driven, hot water is circulated between the hot water storage tank 2 and the heat source unit 3 to boil the hot water.

給水配管４は、貯湯タンク２底部に接続され、貯湯タンク２にその底部から給水する。高温出湯配管５の上流端が貯湯タンク２上部に接続され、その下流端が湯を出湯する出湯端末５Ａに接続されている。即湯分岐配管９は、高温出湯配管５から分岐し、即湯用ポンプ１０、開閉弁１１、および逆止弁１２を介して、貯湯タンク２側部に接続されている。即湯用ポンプ１０が駆動されることにより、高温出湯配管５内に貯湯タンク２内の湯が循環され即湯循環が行われる。
特開２００８−１５７５５１号公報 The water supply pipe 4 is connected to the bottom of the hot water storage tank 2 and supplies water to the hot water storage tank 2 from the bottom. An upstream end of the high-temperature hot water discharge pipe 5 is connected to the upper part of the hot water storage tank 2, and a downstream end thereof is connected to a hot water outlet terminal 5 </ b> A that discharges hot water. The hot water branch pipe 9 branches from the high temperature hot water discharge pipe 5 and is connected to the hot water storage tank 2 side through a hot water pump 10, an on-off valve 11 and a check valve 12. When the hot water pump 10 is driven, the hot water in the hot water storage tank 2 is circulated in the high temperature hot water discharge pipe 5 and the hot water circulation is performed.
JP 2008-157551 A

上記の貯湯式給湯システム１０１においては、即湯循環を行うために、ポンプ８とは別に即湯用ポンプ１０が必要とされるため、貯湯式給湯システム１０１のコストが高くなっていた。本発明は、上記問題を解決するためになされたものであり、沸上げ用と即湯用との２種類のポンプを必要とせず、低コスト化を図った貯湯式給湯システムを提供することを目的とする。   In the hot water storage type hot water supply system 101 described above, since the hot water pump 10 is required in addition to the pump 8 in order to perform the quick hot water circulation, the cost of the hot water storage type hot water supply system 101 is high. The present invention has been made to solve the above-described problem, and does not require two types of pumps for boiling and instant hot water, and provides a hot water storage type hot water supply system that achieves cost reduction. Objective.

本発明の貯湯式給湯システムは、熱源機と貯湯タンクとの間に湯水をポンプにより循環させて湯を沸上げる沸上げ配管と、前記貯湯タンクから出湯端末へ湯水を送出すると共に、即湯用に湯水を循環させる給湯配管とを備え、前記沸上げ配管に、湯水の循環先を前記貯湯タンク側と前記給湯配管側とのいずれかに切替える切替手段を設け、即湯用の循環時には前記切替手段を給湯配管側に切替え、湯の沸上げ時と即湯循環時とで同一のポンプにより湯水を循環させ、前記沸上げ配管は、前記貯湯タンクの湯水を前記熱源機に供給するための送り配管と、前記熱源機において沸上げられた湯を前記貯湯タンクに供給するための戻り配管と、を有し、前記熱源機および前記沸上げ配管は、複数個が貯湯タンクに対して並列的に設けられ、前記切替手段は、複数の沸上げ配管のうち一部の沸上げ配管の戻り配管に設けられることを特徴とする。 The hot water storage hot water supply system of the present invention has a boiling pipe for boiling hot water by circulating hot water between a heat source unit and a hot water storage tank by a pump, hot water from the hot water storage tank to a hot water outlet, A hot water supply pipe that circulates hot and cold water, and the boiling pipe is provided with a switching means for switching the hot water circulation destination to either the hot water storage tank side or the hot water supply pipe side, and the switching is performed during circulation for immediate hot water. The means is switched to the hot water supply pipe side, hot water is circulated by the same pump at the time of boiling water and when the hot water is circulated, and the boiling pipe is a feed for supplying hot water from the hot water storage tank to the heat source machine. A pipe and a return pipe for supplying hot water boiled in the heat source unit to the hot water storage tank, and a plurality of the heat source unit and the boiling pipe are connected in parallel to the hot water storage tank. Provided, said switching Stage, and which are located in the return line of the part of the boiling-up pipes of the plurality of boiling up the pipe.

本発明に係る貯湯式給湯システムによれば、湯水の循環先を切替えることで、湯の沸上げ時と即湯循環時とで同一のポンプにより湯水を循環させるので、沸上げ用と即湯用との２種類のポンプを設けることなく即湯を行うことができる。したがって、貯湯式給湯システムの低コスト化を図ることができる。   According to the hot water storage type hot water supply system according to the present invention, by switching the hot water circulation destination, hot water is circulated by the same pump at the time of boiling water and at the time of hot water circulation. Immediate hot water can be performed without providing two types of pumps. Therefore, cost reduction of the hot water storage type hot water supply system can be achieved.

本発明の一実施形態に係る貯湯式給湯システムの構成および湯の沸上げ及び出湯時の動作を説明する図。The figure explaining the structure of the hot water storage type hot-water supply system which concerns on one Embodiment of this invention, and the operation | movement at the time of boiling of hot water, and a tapping. 同システムの即湯循環時の動作を説明する図。The figure explaining the operation | movement at the time of the instant hot water circulation of the system. 同システムの変形例の構成および湯の沸上げ及び出湯時の動作を説明する図。The figure explaining the operation | movement at the time of the structure of the modification of the same system, boiling of hot water, and hot water. 同変形例の即湯循環時の動作を説明する図。The figure explaining the operation | movement at the time of the instant hot water circulation of the modification. 従来の貯湯式給湯システムを説明する図。The figure explaining the conventional hot water storage type hot-water supply system.

以下、本発明の一実施形態に係る貯湯式給湯システムについて図面を参照して説明する。図１に示すように、本実施形態の貯湯式給湯システム１は、湯水を貯える貯湯タンク２と、湯水を加熱する熱源機３と、貯湯タンク２に給水する給水配管４と、沸上げられた湯を通す高温出湯配管５と、を備える。貯湯タンク２と熱源機３とは、送り配管６および戻り配管７を介して接続されている。送り配管６には、ポンプ８が設けられている。戻り配管７には、湯水の循環先を貯湯タンク２側と後述する給湯配管側とのいずれかに切替える切替手段として三方弁１３が設けられている。ポンプ８が駆動されることにより、貯湯タンク２と熱源機３との間で湯水を循環させて湯を沸上げる。   Hereinafter, a hot water storage type hot water supply system according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the hot water storage hot water supply system 1 of the present embodiment is heated to a hot water storage tank 2 for storing hot water, a heat source device 3 for heating the hot water, and a water supply pipe 4 for supplying water to the hot water storage tank 2. High temperature hot water supply piping 5 through which hot water passes. The hot water storage tank 2 and the heat source device 3 are connected via a feed pipe 6 and a return pipe 7. The feed pipe 6 is provided with a pump 8. The return pipe 7 is provided with a three-way valve 13 as switching means for switching the hot water circulation destination between the hot water storage tank 2 side and the hot water supply pipe side described later. When the pump 8 is driven, hot water is circulated between the hot water storage tank 2 and the heat source unit 3 to boil hot water.

給水配管４は、貯湯タンク２底部に接続され、貯湯タンク２にその底部から給水する。高温出湯配管５の上流端は貯湯タンク２上部に接続され、その下流端は湯を出湯する出湯端末５Ａに接続されている。即湯分岐配管９は、高温出湯配管５から分岐し、逆止弁１２を経て、貯湯タンク２側部に接続されている。接続配管１４の上流端が三方弁１３に接続され、その下流端が高温出湯配管５に接続されている。即湯時には、この接続配管１４を通して、熱源機３において沸上げられた湯が高温出湯配管５に送出される。   The water supply pipe 4 is connected to the bottom of the hot water storage tank 2 and supplies water to the hot water storage tank 2 from the bottom. The upstream end of the high temperature hot water supply pipe 5 is connected to the upper part of the hot water storage tank 2, and the downstream end thereof is connected to a hot water outlet terminal 5 </ b> A for hot water discharge. The hot water branch pipe 9 branches from the high temperature hot water pipe 5 and is connected to the hot water storage tank 2 side through a check valve 12. An upstream end of the connection pipe 14 is connected to the three-way valve 13, and a downstream end thereof is connected to the high temperature tap water pipe 5. At the time of instant hot water, the hot water boiled in the heat source unit 3 is sent to the high temperature hot water supply pipe 5 through the connection pipe 14.

熱源機３としては、例えばヒートポンプが用いられ、出湯端末５Ａとしては、例えばカランが用いられる。また、高温出湯配管５には、逆止弁１２が設けられている。貯湯タンク２内の上層部には高温の湯水が貯えられ、中層部には中温の湯水が貯えられ、下層部には低温の湯水が貯えられる。高温出湯配管５、即湯分岐配管９、および接続配管１４は、給湯配管と成り、送り配管６および戻り配管７は沸上げ配管と成る。図中の矢印線は、湯水の循環経路を示している。   As the heat source device 3, for example, a heat pump is used, and as the hot water terminal 5A, for example, currant is used. Further, a check valve 12 is provided in the high temperature hot water supply pipe 5. High temperature hot water is stored in the upper layer portion of the hot water storage tank 2, intermediate temperature hot water is stored in the middle layer portion, and low temperature hot water is stored in the lower layer portion. The high-temperature hot water supply pipe 5, the immediate hot water branch pipe 9, and the connection pipe 14 are hot water supply pipes, and the feed pipe 6 and the return pipe 7 are boiling pipes. The arrow lines in the figure indicate the hot water circulation path.

次に、貯湯式給湯システム１の動作について説明する。まず、湯の沸上げ時の動作を説明する。湯の沸上げ時には、ポンプ８が駆動されることにより、貯湯タンク２内の湯水が熱源機３で所定の温度に加熱される。この場合、貯湯タンク２内の湯水の残湯量に基いて、湯水が沸上げられる。   Next, the operation of the hot water storage type hot water supply system 1 will be described. First, the operation during boiling of hot water will be described. When the hot water is boiled, the hot water in the hot water storage tank 2 is heated to a predetermined temperature by the heat source unit 3 by driving the pump 8. In this case, the hot water is boiled based on the remaining amount of hot water in the hot water storage tank 2.

次に、図１を参照して出湯時の動作を説明する。出湯端末５Ａの給湯口が開かれると、給水圧により水が給水配管４を通って貯湯タンク２にその底部から供給される。貯湯タンク２に水が供給されると、ポンプ８が駆動されることにより、貯湯タンク２内の低温の湯水が、貯湯タンク２底部から送り配管６を通って熱源機３に供給され、貯湯タンク２内の湯水の残湯量に基いて、湯が沸上げられる。この場合、湯水の循環先が貯湯タンク２側となるように三方弁１３が切替えられることにより、ポンプ８は、貯湯タンク２と熱源機３との間で湯水を循環させる。こうして、熱源機３において沸上げられた湯は、戻り配管７を通って貯湯タンク２にその上部から供給され、高温出湯配管５を通って出湯端末５Ａへ送出され、給湯口から出湯される。なお、湯が給湯口から出湯されると、貯湯タンク２底部からその出湯分だけ給水される。   Next, the operation at the time of hot water will be described with reference to FIG. When the hot water outlet of the hot water outlet terminal 5A is opened, water is supplied from the bottom to the hot water storage tank 2 through the water supply pipe 4 by the supply water pressure. When water is supplied to the hot water storage tank 2, the pump 8 is driven so that the low temperature hot water in the hot water storage tank 2 is supplied from the bottom of the hot water storage tank 2 to the heat source device 3 through the feed pipe 6. The hot water is boiled based on the remaining amount of hot water in 2. In this case, the pump 8 circulates hot water between the hot water storage tank 2 and the heat source unit 3 by switching the three-way valve 13 so that the hot water circulation destination is on the hot water storage tank 2 side. Thus, the hot water boiled in the heat source unit 3 is supplied from the upper part to the hot water storage tank 2 through the return pipe 7, sent to the hot water outlet terminal 5 </ b> A through the high temperature hot water supply pipe 5, and discharged from the hot water outlet. When hot water is discharged from the hot water outlet, water is supplied from the bottom of the hot water storage tank 2 by the amount of the hot water.

次に、図２を参照して即湯循環時の動作について説明する。即湯循環が行われるとき、湯水の循環先が給湯配管側となるように三方弁１３が切替えられる。それにより、熱源機３により沸上げられた湯は、矢印で示すように戻り配管７、接続配管１４、高温出湯配管５、および即湯分岐配管９を通り、貯湯タンク２に戻り循環する。これにより、高温出湯配管５内の湯が高温に保持され、即湯が可能となる。この即湯循環の動作時に、湯の沸上げ時と同一のポンプ８により湯水を循環させる。また、熱源機３により沸上げられた湯が、直接、即湯循環用の湯及び出湯端末５Ａからの出湯として利用される。   Next, the operation at the time of circulating hot water will be described with reference to FIG. When the hot water circulation is performed, the three-way valve 13 is switched so that the hot water circulation destination is on the hot water supply pipe side. Thereby, the hot water boiled by the heat source unit 3 passes through the return pipe 7, the connection pipe 14, the high-temperature hot water supply pipe 5, and the immediate hot water branch pipe 9 as indicated by the arrows and circulates back to the hot water storage tank 2. Thereby, the hot water in the high temperature hot water discharge pipe 5 is kept at a high temperature, and instant hot water becomes possible. During this hot water circulation operation, hot water is circulated by the same pump 8 as when boiling water. Moreover, the hot water boiled by the heat source device 3 is directly used as hot water for instant hot water circulation and hot water from the hot water terminal 5A.

このように、本実施形態に係る貯湯式給湯システム１においては、湯の沸上げ時と即湯循環時とで同一のポンプ８により湯水を循環させるので、沸上げ用と即湯用との２種類のポンプを設けることなく即湯を行うことができる。したがって、貯湯式給湯システム１の低コスト化を図ることができる。   As described above, in the hot water storage type hot water supply system 1 according to the present embodiment, hot water is circulated by the same pump 8 at the time of boiling of hot water and at the time of circulating hot water. Immediate hot water can be performed without providing a type of pump. Therefore, cost reduction of the hot water storage type hot water supply system 1 can be achieved.

次に、貯湯式給湯システム１の変形例について、図３を参照して説明する。この変形例に係る貯湯式給湯システム１ａにおいては、複数の熱源機３とその各々に対する沸上げ配管（送り配管６および戻り配管７）が、貯湯タンク２に対して並列的に設けられる。また、複数の沸上げ配管には、ポンプ８がそれぞれ設けられる。複数の沸上げ配管のうちの少なくとも一の沸上げ配管の途中には、三方弁１３が設けられ、即湯用の接続配管１４が分岐されている。   Next, a modified example of the hot water storage type hot water supply system 1 will be described with reference to FIG. In the hot water storage type hot water supply system 1 a according to this modification, a plurality of heat source units 3 and boiling pipes (feed pipe 6 and return pipe 7) for each of them are provided in parallel to the hot water storage tank 2. Moreover, the pump 8 is each provided in several boiling piping. A three-way valve 13 is provided in the middle of at least one of the plurality of boiling pipes, and a connection pipe 14 for immediate hot water is branched.

各送り配管６の上流端は、貯湯タンク２の底部から導出された配管１５の下流端に設けられたヘッダ１６に接続されている。各戻り配管７の下流端はヘッダ１７に接続され、ヘッダ１７は配管１８を経て貯湯タンク２上部に接続される。   The upstream end of each feed pipe 6 is connected to a header 16 provided at the downstream end of the pipe 15 led out from the bottom of the hot water storage tank 2. The downstream end of each return pipe 7 is connected to a header 17, and the header 17 is connected to the upper part of the hot water storage tank 2 via a pipe 18.

次に、貯湯式給湯システム１ａの動作について説明する。まず、湯の沸上げ時の動作について説明する。湯の沸上げ時には、上述と同様に、貯湯タンク２内の湯水の残湯量に基いて、湯水が各熱源機３で所定の温度に加熱される。   Next, the operation of the hot water storage type hot water supply system 1a will be described. First, the operation during boiling of hot water will be described. At the time of boiling the hot water, the hot water is heated to a predetermined temperature by each heat source unit 3 based on the remaining amount of hot water in the hot water storage tank 2 as described above.

次に、図３を参照して出湯時の動作について説明する。出湯端末５Ａの給湯口が開かれると、上述と同様に、貯湯タンク２内の湯水の残湯量に基いて、各熱源機３により湯が沸上げられ、貯湯タンク２に貯えられると共に、貯湯タンク２から沸上げられた湯が高温出湯配管５を通って給湯口から出湯される。   Next, the operation at the time of hot water will be described with reference to FIG. When the hot water outlet of the hot water terminal 5A is opened, the hot water is boiled by each heat source unit 3 and stored in the hot water storage tank 2 based on the remaining amount of hot water in the hot water storage tank 2 as described above. The hot water boiled from 2 is discharged from the hot water supply port through the high temperature hot water supply pipe 5.

次に、図４を参照して即湯循環時の動作を説明する。即湯循環が行われるとき、上述と同様に、三方弁１３は、沸上げた湯を戻り配管７から接続配管１４に送出するように切替えられる。これにより、熱源機３により沸上げられた湯は、矢印で示すように、高温出湯配管５および即湯分岐配管９から貯湯タンク２へと循環する。この即湯循環の動作時に、三方弁１３が設けられていない他の戻り配管７を通る沸上げられた湯は、貯湯タンク２に送られるので、湯の沸上げ動作も同時に行われる。こうして、貯湯式給湯システム１ａにおいては、即湯循環と沸上げとを同時に行うことができる。   Next, the operation at the time of circulating hot water will be described with reference to FIG. When the hot water circulation is performed, the three-way valve 13 is switched so as to send the heated hot water from the return pipe 7 to the connection pipe 14 as described above. Thereby, the hot water boiled by the heat source device 3 circulates from the high temperature hot water supply pipe 5 and the hot water branch pipe 9 to the hot water storage tank 2 as shown by arrows. At the time of this hot water circulation operation, the hot water boiled through the other return pipe 7 not provided with the three-way valve 13 is sent to the hot water storage tank 2, so that the hot water boiling operation is also performed at the same time. Thus, in the hot water storage type hot water supply system 1a, the hot water circulation and the boiling can be performed simultaneously.

このような貯湯式給湯システム１ａによれば、上記本実施形態と同様の効果が得られるとともに、沸上げと即湯循環とを同時に行うことができる。また、複数の熱源機３が設けられているので、熱源機３が１つのときと比べて湯の沸上げ能力を高くすることができる。   According to such a hot water storage type hot water supply system 1a, the same effect as that of the present embodiment can be obtained, and boiling and quick hot water circulation can be performed simultaneously. Moreover, since the several heat source device 3 is provided, the boiling ability of hot water can be made high compared with the case where the heat source device 3 is one.

なお、本発明は上記実施形態の構成に限られず、発明の趣旨を変更しない範囲で種々の変更が可能である。例えば、上記実施形態では、ポンプ８は、送り配管６に設けられたものを示したが、ポンプ８は、熱源機３内部に設けられてもよい。また、上記では、一の沸上げ配管の途中に三方弁１３が設けられ、即湯用の接続配管１４が分岐されているものを示したが、複数の沸上げ配管の途中に三方弁１３がそれぞれ設けられ、複数の即湯用の接続配管１４が分岐されてもよい。また、上記では、ポンプ８は、複数の送り配管６にそれぞれ設けられたものを示したが、配管１５に設けられてもよい。さらに、上記では、ヘッダ１５，１６が設けられたものを示したが、ヘッダ１５，１６が設けられず、複数の送り配管６の上流端が貯湯タンク２底部にそれぞれ接続され、複数の戻り配管７の下流端が貯湯タンク２上部にそれぞれ接続されてもよい。また、上記では、熱源機３の例としてヒートポンプを示したが、燃焼式の湯沸器、その他の湯沸器であってもよい。また、上記では、貯湯タンクは２つ以上から構成されてもよい。   The present invention is not limited to the configuration of the above embodiment, and various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the pump 8 is provided in the feed pipe 6, but the pump 8 may be provided in the heat source unit 3. In the above description, the three-way valve 13 is provided in the middle of one boiling pipe and the connecting pipe 14 for the hot water is branched. However, the three-way valve 13 is provided in the middle of a plurality of boiling pipes. Each may be provided and a plurality of connection pipes 14 for hot water may be branched. In the above description, the pump 8 is provided on each of the plurality of feed pipes 6, but may be provided on the pipe 15. Further, in the above description, the headers 15 and 16 are provided, but the headers 15 and 16 are not provided, and the upstream ends of the plurality of feed pipes 6 are respectively connected to the bottom of the hot water storage tank 2 and a plurality of return pipes are provided. 7 may be connected to the upper part of the hot water storage tank 2, respectively. In the above description, the heat pump is shown as an example of the heat source device 3, but a combustion water heater or other water heater may be used. In the above, the hot water storage tank may be composed of two or more.

１ 貯湯式給湯システム
２ 貯湯タンク
３ 熱源機
５ 高温出湯配管（給湯配管）
６ 送り配管（沸上げ配管）
７ 戻り配管（沸上げ配管）
８ ポンプ
９ 即湯分岐配管（給湯配管）
１３ 三方弁（切替手段）
１４ 接続配管（給湯配管） 1 Hot water storage hot water system 2 Hot water storage tank 3 Heat source machine 5 High temperature hot water supply piping (hot water supply piping)
6 Feeding piping (boiling piping)
7 Return piping (boiling piping)
8 Pump 9 Instant hot water branch pipe (hot water supply pipe)
13 Three-way valve (switching means)
14 Connection piping (hot water supply piping)

Claims (1)

熱源機と貯湯タンクとの間に湯水をポンプにより循環させて湯を沸上げる沸上げ配管と、前記貯湯タンクから出湯端末へ湯水を送出すると共に、即湯用に湯水を循環させる給湯配管とを備えた貯湯式給湯システムにおいて、
前記沸上げ配管に、湯水の循環先を前記貯湯タンク側と前記給湯配管側とのいずれかに切替える切替手段を設け、即湯用の循環時には前記切替手段を給湯配管側に切替え、湯の沸上げ時と即湯循環時とで同一のポンプにより湯水を循環させ、
前記沸上げ配管は、前記貯湯タンクの湯水を前記熱源機に供給するための送り配管と、前記熱源機において沸上げられた湯を前記貯湯タンクに供給するための戻り配管と、を有し、
前記熱源機および前記沸上げ配管は、複数個が貯湯タンクに対して並列的に設けられ、
前記切替手段は、複数の沸上げ配管のうち一部の沸上げ配管の戻り配管に設けられることを特徴とする貯湯式給湯システム。 A heating pipe that circulates hot water between the heat source unit and the hot water storage tank by a pump to boil the hot water, and a hot water supply pipe that sends hot water from the hot water storage tank to the hot water outlet terminal and circulates hot water for immediate hot water. In the hot water storage hot water system provided,
The boiling pipe is provided with a switching means for switching the hot water circulation destination to either the hot water storage tank side or the hot water supply pipe side, and when the hot water is circulated, the switching means is switched to the hot water supply pipe side. Hot water is circulated by the same pump at the time of raising and at the time of hot water circulation,
The boiling pipe has a feed pipe for supplying hot water in the hot water storage tank to the heat source machine, and a return pipe for supplying hot water boiled in the heat source machine to the hot water storage tank,
A plurality of the heat source unit and the boiling piping are provided in parallel to the hot water storage tank,
The hot water storage hot water supply system, wherein the switching means is provided in a return pipe of a part of the plurality of boiling pipes.
JP2010165829A 2010-07-23 2010-07-23 Hot water storage hot water supply system Expired - Fee Related JP5874024B2 (en)

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