JP2012017903A - Hot water supply system - Google Patents

Hot water supply system Download PDF

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Publication number
JP2012017903A
JP2012017903A JP2010155199A JP2010155199A JP2012017903A JP 2012017903 A JP2012017903 A JP 2012017903A JP 2010155199 A JP2010155199 A JP 2010155199A JP 2010155199 A JP2010155199 A JP 2010155199A JP 2012017903 A JP2012017903 A JP 2012017903A
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Japan
Prior art keywords
hot water
temperature
water supply
tank
medium
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JP2010155199A
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Japanese (ja)
Inventor
Shinji Yamawaki
信二 山脇
Hironobu Hori
堀　　宏展
Osamu Yoshii
理 芳井
Nobuhiko Toda
亘彦 戸田
Shinya Sawada
慎也 澤田
Tsutomu Nagata
訓 永田
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Panasonic Electric Works Co Ltd
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Panasonic Electric Works Co Ltd
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Priority to JP2010155199A priority Critical patent/JP2012017903A/en
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Abstract

PROBLEM TO BE SOLVED: To improve efficiency of hot water supply by mutually lending hot water in middle-temperature hot water regions of hot water storage tanks, in a water supply system having a plurality of hot water storage-type water heaters each having the hot water storage tank for storing high-temperature hot water and middle-temperature hot water.SOLUTION: The hot water supply system 1 includes the hot water storage-type water heaters 2, 3 and a linkage control part 9 which makes the heaters linked with each other and controls them. The water heaters 2, 3 include the hot water storage tanks 4, 5 for storing the high temperature hot water and middle-temperature hot water. Water supply piping 8 for supplying water is connected to the tanks 4, 5, there are arranged two-way valves 6a, 6b in the middle of the piping, and the two-way valves are made to communicate with each other by a pair of middle-temperature hot water lending pipes 7 (71, 72) for mutually lending the middle-temperature hot water in the middle-temperature hot water region. According to the use status of the hot water stored in the tanks 4, 5, the linkage control part 9 controls the two-way valves 6a, 6b so that hot water in the respective tanks 4, 5 can be lent with each other, and controls the flow of hot water in the middle-temperature hot water lending pipe 7.

Description

本発明は、高温及び中温の湯を貯湯する貯湯タンクを有した貯湯式給湯機を複数備えた
給湯システムに関する。 The present invention relates to a hot water supply system including a plurality of hot water storage type hot water heaters having a hot water storage tank for storing hot and medium hot water.

従来、高温及び中温の湯を貯湯して高温湯及び中温湯を出湯することができる貯湯式給
湯機が知られている（特許文献１参照）。このような貯湯式給湯機を複数用いて、湯の使
用量の増大に対応した給湯システムがある。これを図４に示す。この給湯システム１００
は、１つの貯湯式給湯機１０１を基本システム構成とし、これと同等の構成の貯湯式給湯
機１０２を用い、それらの配管経路が別々に構成されている。 2. Description of the Related Art Conventionally, there is known a hot water storage type water heater that can store hot and medium hot water and discharge hot and medium hot water (see Patent Document 1). There is a hot water supply system that uses a plurality of such hot water storage type water heaters to cope with an increase in the amount of hot water used. This is shown in FIG. This hot water supply system 100
Has a basic hot water storage type water heater 101 as a basic system configuration, uses a hot water storage type hot water heater 102 having the same configuration, and the piping paths thereof are configured separately.

貯湯式給湯機１０１、１０２は、給水管からそれぞれの貯湯タンク１０３の底部に給水
された水を熱源機１０４で沸き上げ、その沸上湯を貯湯タンク１０３の上部より入れて貯
湯する。このとき、貯湯タンク１０３は、その上部から底部にかけて高温湯領域及び中温
湯領域が形成される。高温湯は、貯湯タンク１０３の頂部から配管を介して高温出湯端末
から出湯される。中温湯は、貯湯タンク１０３の中温湯領域から供給される温湯と給水と
を混合弁１０６で混合され中温出湯端末から出湯される。制御部１０５は、湯量センサ及
び温度センサにより検出された湯量及び温度を基に、熱源機１０４、混合弁１０６等を制
御して、高温湯及び中温湯の湯量及び温度を制御する。 The hot water storage water heaters 101 and 102 boil the water supplied from the water supply pipes to the bottoms of the respective hot water storage tanks 103 by the heat source device 104, and store the boiling hot water from the upper part of the hot water storage tank 103. At this time, the hot water storage tank 103 is formed with a hot water region and a medium hot water region from the top to the bottom. The hot water is discharged from the hot water outlet terminal through the pipe from the top of the hot water storage tank 103. The hot water and hot water supplied from the hot water area of the hot water storage tank 103 are mixed by the mixing valve 106 and discharged from the hot intermediate hot water terminal. The control unit 105 controls the heat source unit 104, the mixing valve 106, and the like based on the hot water amount and the temperature detected by the hot water sensor and the temperature sensor, thereby controlling the hot water amount and the temperature of the hot and medium hot water.

特開２００９−１７４７８１号公報JP 2009-174781 A

しかしながら、上図のような給湯システムは、複数の貯湯式給湯機を個々に用いている
のみである。このため、一方の貯湯式給湯機１０１で中温湯の使用量が増大し、湯切れし
て再沸き上げをしているにも拘らず他方が湯余りすることや、または、一方の給湯機が湯
切れするまでの間、他方が放熱により温度低下することがある。従って、いずれも使用湯
量が少ない方のタンク内では、中温湯領域の湯はその滞留時間が長くなり、タンクの放熱
ロスにより貯湯温度が給湯に利用できない程度にまで低くなってしまうことがある。 However, the hot water supply system as shown in the upper drawing only uses a plurality of hot water storage type hot water heaters individually. For this reason, the amount of medium-temperature hot water used in one of the hot water storage hot water heaters 101 is increased, and the remaining hot water is used up even though the hot water runs out and re-boiling is performed. Until the hot water runs out, the other may drop in temperature due to heat dissipation. Accordingly, in both tanks with less hot water usage, the hot water in the medium hot water region has a longer residence time, and the stored heat temperature may be lowered to such an extent that it cannot be used for hot water supply due to heat dissipation loss of the tank.

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、貯湯タンクを有した貯湯式
給湯機を複数備えた給湯システムにおいて、各貯湯タンクの中湯領域の湯を互いに融通し
合うことにより、給湯効率を向上することが可能な給湯システムを提供することを目的と
する。 The present invention has been made to solve the above-described problem, and in a hot water supply system including a plurality of hot water storage hot water heaters having hot water storage tanks, the hot water in the hot water area of each hot water storage tank is interchanged. An object of the present invention is to provide a hot water supply system capable of improving the hot water supply efficiency.

上記目的を達成するために本発明の給湯システムは、貯湯タンクを有する貯湯式給湯機
を複数備えた給湯システムにおいて、前記貯湯タンクの各々への給水を制御する給水弁と
、前記各貯湯タンクを互いに連通し、中温湯を融通する一対の中温融通管と、前記各貯湯
タンクの使用状況に応じて、それぞれのタンクの湯が互いに融通可能となるように、前記
給水弁を制御し前記中温融通管での湯の流れを制御する連携制御部と、を備えたことを特
徴とする。 In order to achieve the above object, a hot water supply system of the present invention comprises a hot water supply system having a plurality of hot water storage hot water heaters having a hot water storage tank, a water supply valve for controlling water supply to each of the hot water storage tanks, and each hot water storage tank. A pair of medium temperature interchange pipes that communicate with each other and accommodate the medium temperature hot water, and the water supply valve is controlled so that the hot water in each tank can be interchanged according to the usage situation of each of the hot water storage tanks. And a linkage control unit for controlling the flow of hot water in the pipe.

この給湯システムにおいて、前記連携制御部は、一方の貯湯タンクの中温湯領域の湯の
滞留時間が一定時間を越えたとき、前記給水弁を制御して前記中温融通管を経由して他方
の貯湯タンクの中温貯湯領域に中温湯を供給することが好ましい。 In this hot water supply system, the cooperative control unit controls the water supply valve when the hot water staying time in the intermediate temperature hot water region of one hot water storage tank exceeds a predetermined time, and passes through the intermediate temperature interchange pipe to control the other hot water storage hot water. It is preferable to supply intermediate temperature hot water to the intermediate temperature hot water storage area of the tank.

本発明の給湯システムによれば、給水弁を制御することにより、複数の貯湯タンク間で
中湯領域の湯を互いに融通し合うことができるので、一方のタンクの出湯量が多いときに
、使用量の少ない方のタンクの湯を利用することができる。その結果、放置による放熱ロ
スを抑えることができ、各タンク間での中温湯の利用効率が高まり、給湯効率が向上する
。 According to the hot water supply system of the present invention, by controlling the water supply valve, the hot water in the middle hot water region can be interchanged between a plurality of hot water storage tanks. You can use the hot water from the tank with the smaller amount. As a result, heat loss due to neglect can be suppressed, the use efficiency of the medium temperature hot water between the tanks is increased, and the hot water supply efficiency is improved.

本発明の一実施形態に係る給湯システムの構成図。The block diagram of the hot-water supply system which concerns on one Embodiment of this invention. 同上システムの連携制御部による中温融通管での湯の流れの制御を説明する図。The figure explaining control of the flow of hot water in the middle temperature interchangeable pipe by the cooperation control part of a system same as the above. 上記実施形態の変形例の構成図。The block diagram of the modification of the said embodiment. 従来の給湯システムの構成図。The block diagram of the conventional hot-water supply system.

本発明の一実施形態に係る給湯システムについて、図１及び図２を参照して説明する。
図１に示されるように、給湯システム１は、複数の貯湯式給湯機（以下、給湯機という）
２、３と、各給湯機２、３を連携して制御する連携制御部９とを備える。それぞれの給湯
機２、３は、貯湯タンク（以下、タンクという）４、５と、このタンク内に貯める湯を沸
き上げるための熱源機２０を備える。各タンク４、５には、給水のための給水配管８が接
続され、その途中には、それぞれ二方弁（給水弁）６ａ、６ｂが設けられている。各タン
ク４、５は、互いに中温領域の中温の湯を融通し合うために、一対の中温融通管７（７１
、７２）で連通されている。連携制御部９は、各タンク４、５の貯湯の使用状況に応じて
、それぞれのタンク４、５の湯が互いに融通可能となるように、二方弁６ａ、６ｂを制御
し中温融通管７での湯の流れを制御する。また、給湯機２、３からの高温湯及び中温湯は
、それぞれの高温出湯配管１０及び中温出湯配管１１を通して、それぞれ高温出湯口及び
中温出湯口から出湯される。 A hot water supply system according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
As shown in FIG. 1, a hot water supply system 1 includes a plurality of hot water storage type hot water heaters (hereinafter referred to as hot water heaters).
2 and 3 and a cooperation control unit 9 that controls the water heaters 2 and 3 in a coordinated manner. Each of the water heaters 2 and 3 includes hot water storage tanks (hereinafter referred to as tanks) 4 and 5 and a heat source device 20 for boiling up the hot water stored in the tanks. A water supply pipe 8 for water supply is connected to each of the tanks 4 and 5, and two-way valves (water supply valves) 6 a and 6 b are provided in the middle of the tanks 4 and 5. Each tank 4, 5 has a pair of medium temperature interchange pipes 7 (71) in order to interchange the medium temperature hot water in the medium temperature region.
72). The cooperation control unit 9 controls the two-way valves 6a and 6b so that the hot water in the respective tanks 4 and 5 can be interchanged in accordance with the use conditions of the hot water storage in the respective tanks 4 and 5, and the intermediate temperature interchange pipe 7 Control the flow of hot water in Moreover, the hot and medium hot water from the hot water heaters 2 and 3 are discharged from the high temperature hot water outlet and the intermediate hot water outlet through the high temperature hot water outlet pipe 10 and the intermediate hot water outlet pipe 11, respectively.

この給湯システム１は、給湯機２を基本システム構成とし、これと同等の構成の給湯機
３を配置して、湯の使用状況に応じて連携制御部９により二方弁６ａ、６ｂを制御し、タ
ンク４、５の中温湯領域間で中温融通管７を介して中温湯を融通して、給湯効率を高める
ものである。 This hot water supply system 1 has a hot water heater 2 as a basic system configuration, a hot water heater 3 having the same configuration as this is arranged, and the two-way valves 6a and 6b are controlled by the cooperation control unit 9 in accordance with the hot water usage status. Further, the hot water supply efficiency is increased by allowing the hot water to be interchanged between the hot water regions of the tanks 4 and 5 through the intermediate temperature interchange pipe 7.

給湯機２は、熱源機２０を制御するための制御部２１、高温湯や中温湯の温度及び流量
を検出するための温度センサＴＳ及び流量センサＦＳを備える。また、給湯機２は、熱源
機２０からの沸上湯を切替えるための沸上切替弁６ｃと、タンク４からの中温湯と給水と
を混合するための混合弁６ｅと、給湯機２内の各部を配管するための各種配管とを備える
。 The water heater 2 includes a control unit 21 for controlling the heat source device 20, a temperature sensor TS and a flow rate sensor FS for detecting the temperature and flow rate of high-temperature hot water and medium-temperature hot water. Further, the hot water heater 2 includes a boiling switching valve 6 c for switching the boiling hot water from the heat source device 20, a mixing valve 6 e for mixing the medium temperature hot water and the water from the tank 4, And various pipes for piping each part.

熱源機２０は、送揚ポンプ（不図示）を有しており、タンク４の底部から接続配管を介
して水を吸引して沸かし上げる。熱源機２０には、送り配管８１及び戻し配管８２が接続
されており、この戻し配管８２は、沸上切替弁６ｃでタンク４の頂部に繋がる配管とタン
ク４の中層部に繋がる配管とに分岐している。また、熱源機２０は、制御部２１からの指
示により、給水を高温又は中温湯に沸き上げ、制御部２１は、この沸上湯を沸上切替弁６
ｃで切替えてタンク４に供給することにより、貯湯領域を調整する。なお、熱源機２０と
しては、ヒートポンプ等が用いられる。なお、送揚ポンプはタンク４側にあってもよい。 The heat source unit 20 has a feed pump (not shown), and sucks water from the bottom of the tank 4 through a connecting pipe to boil it. A feed pipe 81 and a return pipe 82 are connected to the heat source device 20, and this return pipe 82 branches into a pipe connected to the top of the tank 4 and a pipe connected to the middle layer of the tank 4 by the boiling switching valve 6c. is doing. Further, the heat source device 20 boils the feed water to a high temperature or medium temperature hot water according to an instruction from the control unit 21, and the control unit 21 converts the boiling hot water to the boiling switching valve 6.
The hot water storage area is adjusted by switching to c and supplying the tank 4 with c. A heat pump or the like is used as the heat source device 20. The feed pump may be on the tank 4 side.

タンク４は、その底部側に給水配管８に繋がる給水配管８ａが接続されており、この給
水配管８ａ中に二方弁６ａが設けられている。この構成により、タンク４は給水圧により
圧入される水を貯留し、その頂部側、または中層部側に熱源機２０からの沸上湯を貯湯し
ていく。タンク４内には、その頂部から底部に向って、高温層となる高温湯領域４１と、
中温層となる中温湯領域４２と、低温層となる低温湯領域４３とによる温度成層が形成さ
れる。これらの領域における層幅は、高温出湯配管１０及び中温出湯配管１１からの高温
湯又は中温湯の出湯量に伴って変化し、それぞれの出湯量が多いと、高温湯領域４１又は
中温湯領域４２が少なくなるようになる。なお、二方弁６ａ、６ｂは、これに限らず、給
水を制御する給水制御弁であればよい。 The tank 4 is connected to a water supply pipe 8a connected to the water supply pipe 8 on the bottom side thereof, and a two-way valve 6a is provided in the water supply pipe 8a. With this configuration, the tank 4 stores the water injected by the supply water pressure, and stores boiling hot water from the heat source unit 20 on the top side or the middle layer side. In the tank 4, from the top to the bottom, a hot water region 41 that becomes a high temperature layer,
A temperature stratification is formed by the medium hot water region 42 serving as the intermediate temperature layer and the low temperature hot water region 43 serving as the low temperature layer. The layer width in these regions changes with the amount of hot water or hot water from the hot hot water piping 10 and the intermediate hot water piping 11, and when the amount of each hot water is large, the hot water region 41 or the intermediate hot water region 42. Will become less. The two-way valves 6a and 6b are not limited to this, and may be any water supply control valve that controls water supply.

高温出湯配管１０は、タンク４の頂部から導出されている。中温出湯配管１１は貯湯タ
ンク４の中層部から導出されている。中温出湯配管１１は、高温出湯配管１０から分岐し
た配管と出湯切替弁６ｄによって合流している。また、中温出湯配管１１は、タンク４の
底部に接続される給水配管８ａから分岐する配管８３と混合弁６ｅを介して接続されてい
る。これら各配管には、温度センサＴＳと、流量センサＦＳが設けられている。 The high temperature hot water supply pipe 10 is led out from the top of the tank 4. The medium temperature hot water supply pipe 11 is led out from the middle layer of the hot water storage tank 4. The medium temperature hot water piping 11 is joined by a piping branched from the high temperature hot water piping 10 and the hot water switching valve 6d. Further, the intermediate temperature hot water supply pipe 11 is connected to a pipe 83 branched from a water supply pipe 8a connected to the bottom of the tank 4 via a mixing valve 6e. Each of these pipes is provided with a temperature sensor TS and a flow rate sensor FS.

タンク４の上部から下部にかけてタンク４の各位置の湯温を検出する温度センサＴＳが
設けられている。制御部２１は各温度センサＴＳにより検知された温度情報によりタンク
４の貯湯量や給湯温度を検出する。温度センサＴＳとしては、例えば、熱電対等が利用で
きる。流量センサＦＳとしては、フローメータなどが利用できる。 A temperature sensor TS for detecting the hot water temperature at each position of the tank 4 is provided from the upper part to the lower part of the tank 4. The controller 21 detects the amount of hot water stored in the tank 4 and the hot water supply temperature based on the temperature information detected by each temperature sensor TS. For example, a thermocouple or the like can be used as the temperature sensor TS. A flow meter or the like can be used as the flow sensor FS.

制御部２１は、温度センサＴＳ及び流量センサＦＳからの温度及び流量の検出データに
より、熱源機２０と共に、沸上切替弁６ｃ、出湯切替弁６ｄ、及び混合弁６ｅ等の給湯機
２における各部の動作を制御する。制御部２１は、例えば、熱源機２０でその沸上湯を高
温としたときは、沸上切替弁６ｃを戻し配管８２を高温湯側に切替えてタンク４の高温湯
領域４１に高温湯を供給し、中温としたときは、タンク４の中温湯領域４２に中温湯を供
給する。 Based on the temperature and flow rate detection data from the temperature sensor TS and the flow rate sensor FS, the control unit 21, together with the heat source unit 20, controls each part in the hot water supply device 2 such as the boiling switching valve 6 c, the hot water switching valve 6 d, and the mixing valve 6 e. Control the behavior. For example, when the boiling water is heated to a high temperature by the heat source device 20, the controller 21 returns the boiling switching valve 6 c and switches the pipe 82 to the high temperature hot water side to supply the high temperature hot water to the high temperature hot water region 41 of the tank 4. However, when the temperature is medium, medium temperature hot water is supplied to the medium temperature hot water region 42 of the tank 4.

制御部２１は、中湯出湯口が開かれたときで、出湯切替弁６ｄが中温出湯配管１１に切
替わっているときに、混合弁６ｅの設定された混合割合と流量センサＦＳで検出した流量
とから、タンク４内の中温湯の使用量を判定する。この判定により、例えば、中温湯の使
用量が一定時間で一定量を超えているかどうかが分かる。 The control unit 21 detects the flow rate detected by the mixing ratio set by the mixing valve 6e and the flow rate sensor FS when the hot water outlet is opened and the hot water switching valve 6d is switched to the intermediate temperature hot water piping 11. From the above, the amount of medium temperature hot water in the tank 4 is determined. By this determination, for example, it can be determined whether or not the amount of medium-temperature hot water used exceeds a certain amount in a certain time.

他方の給湯機３も、上記給湯機２と同等の構成を有する。ここでは、貯湯タンク５以外
は同等構成には前記と同番号を付している。 The other water heater 3 also has the same configuration as the water heater 2. Here, components other than the hot water storage tank 5 are denoted by the same reference numerals as above.

中温融通管７は、１対の中温融通管７１、７２のうち、中温融通管７１は、貯湯タンク
４の中温湯領域４２の高位置と、貯湯タンク５の中温湯領域５２の低位置とを連通する。
また、他方の中温融通管７２は貯湯タンク５の中温湯領域５２の高位置と、貯湯タンク４
の中温湯領域４２の低位置とを連通する。また、中温融通管７１、７２は、それらの配管
中に設けられる逆止弁７ａ、７ｂをそれぞれ備える。 Among the pair of medium temperature interchange pipes 71 and 72, the medium temperature interchange pipe 71 has a high position of the medium temperature hot water area 42 of the hot water storage tank 4 and a low position of the medium temperature hot water area 52 of the hot water storage tank 5. Communicate.
The other medium temperature interchange pipe 72 is connected to a high position of the medium temperature hot water region 52 of the hot water storage tank 5 and the hot water storage tank 4.
It communicates with the low position of the hot water area 42 of the hot water. Moreover, the intermediate temperature interchangeable pipes 71 and 72 are provided with check valves 7a and 7b provided in the pipes, respectively.

連携制御部９は、給湯機２、３のそれぞれの制御部２１と電気的に接続されており、そ
れら制御部２１と連携して、システム全体を制御する。このとき、連携制御部９は、制御
部２１で検出されたそれぞれの高温湯や中温湯の温度や流量の各データ、及び各タンク４
、５の貯湯量に基き、二方弁６ａ、６ｂを制御する。連携制御部９は、タイマ（不図示）
と記憶部を有し、給湯機２、３における湯量や温度の時間的変化を検知し、それらのデー
タを記憶する。なお、連携制御部９及び制御部２１は、１つの制御部にまとめてもよい。 The cooperation control unit 9 is electrically connected to the respective control units 21 of the water heaters 2 and 3, and controls the entire system in cooperation with the control units 21. At this time, the cooperation control unit 9 detects each data of the temperature and flow rate of each hot water and medium hot water detected by the control unit 21 and each tank 4.
The two-way valves 6a and 6b are controlled based on the amount of stored hot water 5. Cooperation control unit 9 is a timer (not shown)
And a storage unit, detects temporal changes in the amount and temperature of hot water in the hot water heaters 2 and 3, and stores those data. Note that the cooperation control unit 9 and the control unit 21 may be combined into one control unit.

次に、上記構成の給湯システム１の動作について説明する。先ず、給湯機２と給湯機３
とのそれぞれの中温出湯口が開放され、中温湯が使用されているときの、連携制御部９に
よる制御について説明する。 Next, operation | movement of the hot water supply system 1 of the said structure is demonstrated. First, water heater 2 and water heater 3
The control by the cooperation control unit 9 when the medium temperature hot water outlets are opened and the medium temperature hot water is being used will be described.

連携制御部９は、給湯機２、３の中温出湯口が開放されると、二方弁６ａ、６ｂを共に
開放する。このとき、例えば、給湯機２においては、給水圧により水が給水配管８ａを通
ってタンク４の底部に入ると、この給水圧でタンク４に貯湯されていた中温湯が中温出湯
配管１１を通り、中温出湯口から出湯される。制御部２１はタンク４内の中温湯が所定の
量まで減ると沸き上げを開始し、熱源機２０で水を中温加熱し、加熱された中温湯をタン
ク４の中層部に供給するように沸上切替弁６ｃを切替える。このとき、タンク４の中層部
に貯湯された中温湯が中温出湯配管１１に出湯される。また、給湯機３においても、同様
に、給水圧により水が給水配管８ｂを通ってタンク５の底部に入り、同様の動作を行う。 The cooperation control part 9 will open | release both the two-way valves 6a and 6b, if the hot water outlet of the water heaters 2 and 3 is open | released. At this time, for example, in the water heater 2, when water enters the bottom of the tank 4 through the water supply pipe 8 a due to the water supply pressure, the medium temperature hot water stored in the tank 4 through the water supply pressure passes through the medium temperature hot water supply pipe 11. The hot water is discharged from the hot outlet. When the medium temperature hot water in the tank 4 is reduced to a predetermined amount, the control unit 21 starts boiling, heats the water at a medium temperature with the heat source unit 20, and supplies the heated medium temperature hot water to the middle layer of the tank 4. The upper switching valve 6c is switched. At this time, the hot water stored in the middle layer of the tank 4 is discharged to the hot hot water piping 11. Similarly, in the water heater 3, the water enters the bottom of the tank 5 through the water supply pipe 8 b by the water supply pressure, and performs the same operation.

この場合、各給湯機２、３とも、それぞれ中温湯が中温出湯口から出湯され、タンク４
、５の中温湯領域の温湯が共に出湯され、どちらの貯湯量も一定温度以上で保たれている
ときは、連携制御部９は二方弁６ａ、６ｂを開放を続けるように制御する。このとき、そ
れぞれタンク３、４の中温湯領域の湯が中温出湯配管１１から出湯しているので、中温融
通管７１、７２には、中温湯領域の湯が出湯していないときに比べ、それらに掛かる流圧
が少なく、流れは発生し難い。また、多少の湯の行き来が生じたとしても問題にならない
レベルである。なお、給湯機２、３のそれぞれの高温出湯口が開かれ、中温出湯口が閉じ
ている場合も、同様に中温融通管７１、７２内での湯の行き来は少ない。 In this case, in each of the water heaters 2 and 3, the medium hot water is discharged from the medium temperature hot water outlet, and the tank 4
When the hot water in the medium hot water region of 5 is discharged together and both the hot water storage amounts are kept at a certain temperature or higher, the linkage control unit 9 controls the two-way valves 6a and 6b so as to continue to open. At this time, since the hot water in the medium temperature hot water area of the tanks 3 and 4 is discharged from the intermediate temperature hot water piping 11, respectively, the intermediate temperature interchange pipes 71 and 72 have the hot water in the intermediate temperature hot water area not discharged. The flow pressure applied to the is small, and the flow is difficult to occur. In addition, even if some hot water comes and goes, the level is not problematic. In addition, even when the high temperature hot water outlet of each of the water heaters 2 and 3 is opened and the intermediate hot water outlet is closed, similarly, there is little transfer of hot water in the intermediate temperature interchange pipes 71 and 72.

次に、図２を参照して、給湯機３の給湯系統の中温湯使用量が多く、タンク５の中温湯
領域５２の湯が少なくなっており、給湯機２の給湯系統の中温湯使用量が少ない場合にお
いて、連携制御部９による制御について説明する。この場合、給湯機３の中温湯は連続的
に使用され、給湯機２の中温湯は消費されずに残ったままになっている。このとき、長時
間に亘ってその状態が継続すると、給湯機２のタンク４の中温湯領域４２の湯は温度低下
が進み、湯として機能しなくなる。 Next, referring to FIG. 2, the amount of hot water used in the hot water supply system of the hot water heater 3 is large, the amount of hot water in the hot water region 52 of the tank 5 is reduced, and the amount of hot water used in the hot water system of the hot water heater 2 is low. In the case where there are few, control by the cooperation control part 9 is demonstrated. In this case, the medium temperature hot water of the water heater 3 is continuously used, and the medium temperature hot water of the water heater 2 remains without being consumed. At this time, if the state continues for a long time, the temperature of the hot water in the intermediate hot water region 42 of the tank 4 of the water heater 2 is lowered, and does not function as hot water.

このようなとき、連携制御部９は、従来のように給湯機３で直ぐには不足した高温もし
くは中温湯の沸き上げを行わず、中温湯の使用量を検出する流量センサＦＳにより、給湯
機２の中温湯滞留時間を検出する。ここで、連携制御部９は、給湯機２の中温湯滞留時間
が一定時間以上となったことを検出したときは、給湯機３のタンク５の中温湯の沸上を一
時的に停止させて、給湯機２のタンク４の中温湯領域４２の湯を活用するように制御する
。 In such a case, the cooperation controller 9 does not perform the boiling of the hot or medium hot water that is insufficient immediately in the hot water heater 3 as in the prior art, and uses the flow rate sensor FS that detects the amount of medium hot water to be used. Detects medium-temperature hot water residence time. Here, when the cooperation control unit 9 detects that the medium temperature hot water staying time of the hot water heater 2 has reached a certain time or longer, the cooperation control unit 9 temporarily stops the boiling of the medium temperature hot water in the tank 5 of the water heater 3. The hot water in the intermediate hot water region 42 of the tank 4 of the water heater 2 is controlled to be utilized.

ここでは、給湯機２の中温滞留時間が一定時間を越え、かつ、給湯機２の高温出湯口、
中温出湯口、及び給湯機３の高温出湯口が出湯停止状態にあり、給湯機３の中温出湯口の
みが出湯状態にあるとする。この場合、連携制御部９は、制御部２１からの湯量情報によ
り、給湯機２のタンク４での中温湯の使用量が少なく、中温湯が貯湯されていると判断す
ると、二方弁６ｂを閉じ二方弁６ａを開ける。このとき、給水圧により水が二方弁６ａを
経由し給湯機２のタンク４内に流入し（点線矢印参照）、この流入した水は、タンク４内
の中温湯を押出そうとする。一方、給湯機２の高温出湯口および中温出湯口は閉止状態で
あるため、給湯機２のタンク４内の中温湯は、中温融通管７１を経由して給湯機３のタン
ク５の中温湯領域５２へと押出される。これにより、給湯機３のタンク５の中温出湯口へ
中温湯が給湯され、融通されることになる。 Here, the medium temperature residence time of the water heater 2 exceeds a certain time, and the hot water outlet of the water heater 2 is
It is assumed that the medium temperature hot water outlet and the high temperature hot water outlet of the water heater 3 are in a hot water supply stop state, and only the intermediate temperature hot water outlet of the water heater 3 is in a hot water outlet state. In this case, when the cooperation control unit 9 determines that the amount of medium-temperature hot water used in the tank 4 of the water heater 2 is small and the medium-temperature hot water is stored based on the information on the amount of hot water from the control unit 21, the two-way valve 6b is turned on. The closed two-way valve 6a is opened. At this time, water flows into the tank 4 of the water heater 2 via the two-way valve 6a by the feed water pressure (see the dotted line arrow), and the inflowed water tries to push out the hot water in the tank 4. On the other hand, since the high temperature hot water outlet and the medium temperature hot water outlet of the water heater 2 are closed, the medium hot water in the tank 4 of the water heater 2 passes through the intermediate temperature interchange pipe 71 and the medium temperature hot water region of the tank 5 of the water heater 3. Extruded to 52. As a result, the medium-temperature hot water is supplied to the medium-temperature outlet of the tank 5 of the water heater 3 and is interchanged.

ここでは、中温融通管７１、７２に設けられた逆止弁７ａ、７ｂは、タンク４内から中
温融通管７１、７２へ押し出される中温湯の流圧が所定の流圧以上になると自動的に開き
、所定以下になると閉じるようになっている。このとき、逆止弁７ａ、７ｂにより、中温
融通管７内を通って一方のタンクから他方のタンクに流れる湯が逆流することを阻止でき
るので、両タンク間での融通がスムーズに行われる。 Here, the check valves 7a and 7b provided in the intermediate temperature interchange pipes 71 and 72 are automatically operated when the fluid pressure of the medium temperature hot water pushed out from the tank 4 to the intermediate temperature interchange pipes 71 and 72 exceeds a predetermined fluid pressure. It opens and closes when it falls below a certain level. At this time, since the check valves 7a and 7b can prevent the hot water flowing from one tank to the other tank from flowing through the intermediate temperature interchangeable pipe 7, it is possible to smoothly perform the interchange between the two tanks.

このようにして給湯機２の中温湯を利用した後は、再び給湯機２は自身の熱源機２０で
中温湯沸上を行い、給湯機２の中温出湯配管１１からの出湯に備える。なお、ここで言う
一定時間の設定は、タンク４、５の放熱量や、単に流量センサＦＳから検出される中温湯
の未利用時間などを基にして決定すればよい。また、連携制御部９は、上記とは逆に、給
湯機３における中温湯滞留時間が一定時間を越えた場合には、同様に給湯機３から給湯機
２へ中温湯を供給するよう動作させる。 After using the hot water in the hot water heater 2 in this manner, the hot water heater 2 performs boiling of the hot water in its own heat source device 20 again to prepare for hot water from the hot hot water piping 11 of the hot water heater 2. Note that the setting of the fixed time referred to here may be determined based on the amount of heat released from the tanks 4 and 5 or simply the unused time of the medium-temperature hot water detected from the flow rate sensor FS. In contrast to the above, when the intermediate hot water residence time in the hot water heater 3 exceeds a predetermined time, the cooperation control unit 9 similarly operates to supply the intermediate hot water from the hot water heater 3 to the hot water heater 2. .

本実施形態の給湯システム１によれば、二方弁６ａ、６ｂを制御することにより、貯湯
タンク４、５間で中湯湯領域の湯を互いに融通し合うことができるので、一方のタンクの
出湯量が多いときに、使用量の少ない方のタンクの湯を利用し、未利用の中温湯の放置に
よる放熱ロスを抑えることができる。従って、各タンク４、５間での中温湯の利用効率が
高まり、給湯効率が向上する。 According to the hot water supply system 1 of the present embodiment, by controlling the two-way valves 6a and 6b, the hot water in the middle hot water region can be interchanged between the hot water storage tanks 4 and 5, so When the amount of hot water discharged is large, the hot water in the tank with less usage can be used to suppress heat dissipation loss due to leaving unused hot water. Therefore, the utilization efficiency of the medium temperature hot water between the tanks 4 and 5 is increased, and the hot water supply efficiency is improved.

また、連携制御部９は、一方のタンクにおける中温湯領域の湯の滞留時間が一定時間を
越えたときに必ず、他方の使用中のタンクでの中温湯を供給するので、タンク４の未利用
の中温湯を長く放置することを防止できて、放熱ロスを抑制できる。 In addition, the cooperation control unit 9 always supplies the hot water in the other used tank when the hot water staying time in the intermediate hot water region in one tank exceeds a certain time. It is possible to prevent the middle temperature hot water from being left for a long time and to suppress heat loss.

＜変形例＞
図３は、上記実施形態の変形例を示す。この変形例は、二方弁６ｂ、６ｂ、逆止弁７ａ
、７ｂ、連携制御部９、中温融通管７の接続口Ｐ１、Ｐ２、及び給水配管８ａ、８ｂとの
接続口Ｐ３、Ｐ４を、１つにまとめて連携ユニット１５としたものである。中温融通管７
の接続口Ｐ１、Ｐ２は、中温融通管７によりそれぞれ給湯機２、３側の中温融通管７の接
続口Ｐ５、Ｐ６と接続され、給水配管の接続口Ｐ３、Ｐ４は、給湯機２、３側の給水配管
の接続口Ｐ７、Ｐ８と接続される。これにより、連携ユニット１５と給湯機２、３とを各
配管で接続するだけでシステム構成でき、システムの構築や修理等が容易になる。なお、
連携制御部９と給湯機２、３の各制御部とは、通信回線で結べばよい。 <Modification>
FIG. 3 shows a modification of the above embodiment. This modification includes two-way valves 6b and 6b and a check valve 7a.
7b, the connection control unit 9, the connection ports P1 and P2 of the intermediate temperature interchangeable pipe 7, and the connection ports P3 and P4 of the water supply pipes 8a and 8b are combined into a single unit 15. Medium temperature interchangeable tube 7
The connection ports P1 and P2 are connected to the connection ports P5 and P6 of the intermediate temperature interchange pipe 7 on the side of the hot water heater 2 and 3 by the intermediate temperature interchange pipe 7, respectively, and the connection ports P3 and P4 of the water supply pipe are connected to the water heaters 2 and 3 respectively. It is connected to the connection ports P7 and P8 of the side water supply pipe. As a result, the system can be configured simply by connecting the linkage unit 15 and the water heaters 2 and 3 with each pipe, and the construction and repair of the system can be facilitated. In addition,
The link control unit 9 and the control units of the water heaters 2 and 3 may be connected by a communication line.

なお、本発明は、上記の実施形態の構成に限られず、発明の要旨を変更しない範囲で種
々の変形が可能である。例えば、上記実施形態の給湯システムでは、基本システム構成が
同じ貯湯式給湯機を２つ用いたが、３つ以上であってもよい。また、複数の貯湯式給湯機
が同じ構成でなくても、それらのタンクの中温湯領域を中温融通管で連通できるものであ
れば、仕様が異なっていてもよい。なお、二方弁６ｂ、６ｂ、逆止弁７ａ、７ｂ、連携制
御部９、及びタンクの中温融通管７の接続口Ｐ１、Ｐ２は、それぞれ貯湯式給湯機２、３
に備えていてもよい。 In addition, this invention is not restricted to the structure of said embodiment, A various deformation | transformation is possible in the range which does not change the summary of invention. For example, in the hot water supply system of the above embodiment, two hot water storage type hot water heaters having the same basic system configuration are used, but there may be three or more. Further, even if the plurality of hot water storage type hot water heaters are not the same in configuration, the specifications may be different as long as the medium temperature hot water areas of these tanks can be communicated with each other by the medium temperature interchange pipe. The two-way valves 6b and 6b, the check valves 7a and 7b, the linkage controller 9, and the connection ports P1 and P2 of the intermediate temperature interchange pipe 7 of the tank are respectively connected to the hot water storage hot water heaters 2 and 3 respectively.
You may be prepared for.

１ 給湯システム
２、３ 給湯機（貯湯式給湯機）
４、５ タンク（貯湯タンク）
７、７１、７２ 中温融通管
６ａ、６ｂ 二方弁（給水弁）
８、８ａ、８ｂ 給水配管
９ 連携制御部 1 Hot-water supply system 2, 3 Hot-water supply machine (hot-water storage type hot-water supply machine)
4, 5 Tank (hot water storage tank)
7, 71, 72 Medium temperature interchangeable pipe 6a, 6b Two-way valve (water supply valve)
8, 8a, 8b Water supply piping 9 Cooperation control unit

Claims (2)

貯湯タンクを有する貯湯式給湯機を複数備えた給湯システムにおいて、
前記貯湯タンクの各々への給水を制御する給水弁と、
前記各貯湯タンクを互いに連通し、中温湯を融通する一対の中温融通管と、
前記各貯湯タンクの使用状況に応じて、それぞれのタンクの湯が互いに融通可能となる
ように、前記給水弁を制御し前記中温融通管での湯の流れを制御する連携制御部と、を備
えたことを特徴とする給湯システム。 In a hot water supply system having a plurality of hot water storage water heaters having a hot water storage tank,
A water supply valve for controlling water supply to each of the hot water storage tanks;
A pair of medium temperature interchange pipes for communicating the hot water storage tanks with each other and accommodating medium temperature hot water;
A cooperative control unit that controls the water supply valve and controls the flow of hot water in the medium temperature interchange pipe so that the hot water in the respective tanks can be interchanged according to the use situation of each of the hot water storage tanks; A hot water supply system characterized by that. 前記連携制御部は、一方の貯湯タンクの中温湯領域の湯の滞留時間が一定時間を越えた
とき、前記給水弁を制御して前記中温融通管を経由して他方の貯湯タンクの中温貯湯領域
に中温湯を供給することを特徴とする請求項１に記載の給湯システム。 The cooperative control unit controls the water supply valve when the hot water residence time in the medium temperature hot water region of one hot water storage tank exceeds a predetermined time, and controls the water supply valve via the intermediate temperature interchange pipe to the intermediate temperature hot water storage region of the other hot water storage tank. The hot water supply system according to claim 1, wherein medium hot water is supplied to the hot water supply.
JP2010155199A 2010-07-07 2010-07-07 Hot water supply system Withdrawn JP2012017903A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012097972A (en) * 2010-11-02 2012-05-24 Mitsubishi Electric Corp Hot water supply system
JP2015194330A (en) * 2014-03-25 2015-11-05 株式会社ノーリツ heat distribution unit for heating circulation circuit
JP2016008787A (en) * 2014-06-25 2016-01-18 本田技研工業株式会社 Heat transfer unit
JP6359195B2 (en) * 2016-08-09 2018-07-18 三菱電機株式会社 Hot water supply system and hot water supply method
WO2018163426A1 (en) * 2017-03-10 2018-09-13 三菱電機株式会社 Heat medium supply system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012097972A (en) * 2010-11-02 2012-05-24 Mitsubishi Electric Corp Hot water supply system
JP2015194330A (en) * 2014-03-25 2015-11-05 株式会社ノーリツ heat distribution unit for heating circulation circuit
JP2016008787A (en) * 2014-06-25 2016-01-18 本田技研工業株式会社 Heat transfer unit
JP6359195B2 (en) * 2016-08-09 2018-07-18 三菱電機株式会社 Hot water supply system and hot water supply method
JPWO2018029880A1 (en) * 2016-08-09 2018-08-09 三菱電機株式会社 Hot water supply system and hot water supply method
WO2018163426A1 (en) * 2017-03-10 2018-09-13 三菱電機株式会社 Heat medium supply system
JPWO2018163426A1 (en) * 2017-03-10 2019-06-27 三菱電機株式会社 Heat medium supply system

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