JP2016008787A - Heat transfer unit - Google Patents
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- JP2016008787A JP2016008787A JP2014130136A JP2014130136A JP2016008787A JP 2016008787 A JP2016008787 A JP 2016008787A JP 2014130136 A JP2014130136 A JP 2014130136A JP 2014130136 A JP2014130136 A JP 2014130136A JP 2016008787 A JP2016008787 A JP 2016008787A
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本発明は熱融通ユニットに関し、特に1対の既存の貯湯タンクユニットの貯湯タンク間の熱融通が可能な熱融通ユニットに関する。 The present invention relates to a heat accommodation unit, and more particularly to a heat accommodation unit capable of heat accommodation between hot water storage tanks of a pair of existing hot water storage tank units.
従来から、2世帯住宅や集合住宅等において、複数住宅に対応した貯湯給湯システムが実用に供されている。この貯湯給湯システムは、屋外に設置された外部熱源機(例えば、燃料電池発電装置、ガスエンジン発電装置、ヒートポンプ式熱源機等)で発生した熱を、加熱循環回路を循環する熱媒体を利用して、各住宅に設置された貯湯タンクユニットの貯湯タンクに夫々蓄熱し、これら貯湯タンクの高温の湯水を給湯栓や風呂等の所望の給湯先に給湯するように構成されている。 Conventionally, hot water storage and hot water supply systems corresponding to a plurality of houses have been put to practical use in two-family houses and apartment houses. This hot water storage and hot water system uses a heat medium that circulates heat generated by an external heat source device (for example, a fuel cell power generation device, a gas engine power generation device, a heat pump heat source device, etc.) that is installed outdoors. The hot water storage tanks of the hot water storage tank units installed in each house respectively store heat, and the hot water in the hot water storage tanks is supplied to a desired hot water supply destination such as a hot water tap or a bath.
ところで、上記の貯湯給湯システムは、貯湯タンクに蓄熱した熱に無駄が生じないよう、熱を有効に活用して高効率運転を行うことが望ましい。そこで、貯湯給湯システムは、複数の貯湯タンク間で湯水の移送を介して相互に熱を融通する熱融通機能を備えている場合がある。複数の貯湯タンク間における熱融通機能の技術については、以下に示すような文献に開示されている。 By the way, it is desirable for the hot water storage hot water system to perform high efficiency operation by effectively utilizing heat so that the heat stored in the hot water storage tank is not wasted. Thus, the hot water storage hot water supply system may have a heat interchange function for accommodating heat between a plurality of hot water storage tanks through the transfer of hot water. The technology of the heat interchange function between a plurality of hot water storage tanks is disclosed in the following literature.
例えば、特許文献1の貯湯式給湯装置においては、外部熱源機で加熱された湯水が供給される湯沸し兼用の貯湯タンクと、この湯沸し兼用の貯湯タンクに並列的に接続された湯貯め専用の貯湯タンクと、湯沸し兼用の貯湯タンクと湯貯め専用の貯湯タンクとの間で湯水を相互に置換可能な置換手段とを備え、湯沸し兼用の貯湯タンクの湯水温度が湯貯め専用の貯湯タンクの湯水温度より高い場合に、置換手段によって両貯湯タンク内の湯水を置換することで熱融通する技術が開示されている。 For example, in the hot water storage type hot water supply apparatus disclosed in Patent Document 1, a hot water storage tank that is supplied with hot water heated by an external heat source unit, and a hot water storage dedicated to hot water storage that is connected in parallel to the hot water storage tank that also serves as a hot water heater. There is a tank, a hot water storage tank that also serves as a hot water heater, and a replacement means that can replace hot water with a hot water storage tank that is used exclusively for hot water storage. In the case where the temperature is higher, a technique is disclosed in which heat exchange is performed by replacing hot water in both hot water storage tanks by replacement means.
しかし、特許文献1の貯湯式給湯装置においては、貯湯タンク間で湯水の置換(熱融通)を行う為に、置換手段として貯湯タンク間を接続する専用の配管接続構造や各種弁類が必要となり、複数の貯湯タンクと置換手段とを1つの装置として一体的に組み立てる必要があるので、住宅に既に設置されている既存の貯湯タンクユニットをそのまま利用することができないという問題がある。このため、熱融通制御に対応した専用の貯湯タンクユニットが新たに必要となるので、システムが複雑化する上、据え付けに手間がかかり、コスト高となる問題がある。 However, in the hot water storage type hot water supply apparatus of Patent Document 1, in order to replace hot water between hot water storage tanks (thermal interchange), a dedicated pipe connection structure and various valves for connecting the hot water storage tanks are necessary as replacement means. Since it is necessary to assemble a plurality of hot water storage tanks and replacement means as one device, there is a problem in that existing hot water storage tank units already installed in a house cannot be used as they are. For this reason, since a dedicated hot water storage tank unit corresponding to heat interchange control is newly required, there is a problem that the system becomes complicated and installation takes time and costs increase.
さらに、2世帯住宅や集合住宅等において、燃料電池発電装置を使用した燃料コージェネレーションシステム、ヒートポンプ式熱源機を使用したヒートポンプシステム、太陽熱集熱器を使用した太陽熱システム等の種々のシステムが、各住宅に単独で構築されている場合がある。各住宅のシステムにおいて、外部熱源機から回収された熱は貯湯タンクに夫々蓄熱されるが、省エネ化の為に、上述したように各住宅に設置された貯湯タンク間の熱を融通しながら利用することが望ましい。 Furthermore, in two-family houses and apartment houses, various systems such as a fuel cogeneration system using a fuel cell power generator, a heat pump system using a heat pump heat source machine, a solar heat system using a solar heat collector, etc. It may be built in a house alone. In each home system, the heat recovered from the external heat source unit is stored in the hot water storage tanks respectively. However, to save energy, the heat between the hot water storage tanks installed in each home is used as described above. It is desirable to do.
本発明の目的は、熱融通ユニットにおいて、複数の貯湯タンクユニット間で熱融通を行う際に既存の貯湯タンクユニットを利用可能なもの、複数の既存の貯湯タンクユニット間に容易に取り付け可能なもの、等を提供することである。 It is an object of the present invention to use an existing hot water storage tank unit when performing heat interchange between a plurality of hot water storage tank units, and to be easily attached between a plurality of existing hot water storage tank units. , Etc. is to provide.
請求項1の熱融通ユニットは、各々が熱源機に接続された1対の貯湯タンクユニットのうちの少なくとも一方の貯湯タンクユニットの貯湯タンク内に貯留された湯水を他方の貯湯タンクユニットの貯湯タンクへと移送することによって前記1対の貯湯タンクユニット間での熱融通を行う熱融通ユニットであって、前記1対の貯湯タンクユニットの各々の貯湯タンクの底部から排水する為の排水通路に夫々接続される第1,第2接続口と、前記1対の貯湯タンクユニットの各々の貯湯タンクの上部から出湯する為の出湯通路に夫々接続される第3,第4接続口と、前記第1,第2接続口同士を連通する第1内部通路と、前記第3,第4接続口同士を連通する第2内部通路と、前記第1,第2内部通路に夫々設けられた第1,第2開閉弁と、前記第1,第2内部通路の少なくとも一方に設けられ且つ湯水を一方向に移送可能なポンプ手段と、前記第1,第2内部通路と前記第1,第2開閉弁と前記ポンプ手段とを収納し、且つ前記第1〜第4接続口を突出させたケース部材とを備えたことを特徴としている。 The heat interchangeable unit according to claim 1 is configured so that hot water stored in a hot water storage tank of at least one hot water storage tank unit of a pair of hot water storage tank units each connected to a heat source unit is used as a hot water storage tank of the other hot water storage tank unit. Each of the pair of hot water storage tank units is provided with a heat passage unit for discharging water from the bottom of each hot water storage tank. The first and second connection ports connected, the third and fourth connection ports respectively connected to the hot water outlet passages for discharging hot water from the upper part of the hot water storage tank of each of the pair of hot water storage tank units, and the first , A first internal passage communicating between the second connection ports, a second internal passage communicating between the third and fourth connection ports, and a first and a first provided in the first and second internal passages, respectively. Two on-off valves, A pump means provided in at least one of the first and second internal passages and capable of transferring hot water in one direction; the first and second internal passages; the first and second on-off valves; and the pump means. And the case member which made the said 1st-4th connection port protrude is characterized by the above-mentioned.
請求項2の熱融通ユニットは、請求項1の発明において、前記ポンプ手段は、湯水を正逆方向に移送するように切換え可能なポンプで構成されていることを特徴としている。 The heat accommodation unit according to claim 2 is characterized in that, in the invention according to claim 1, the pump means is constituted by a pump that can be switched so as to transfer hot and cold water in forward and reverse directions.
請求項3の熱融通ユニットは、請求項2の発明において、前記ポンプ手段は、湯水を一方向にのみ移送可能なポンプで構成され、このポンプに四方弁が接続されたことを特徴としている。 According to a third aspect of the present invention, there is provided the heat interchangeable unit according to the second aspect, wherein the pump means is a pump capable of transferring hot water only in one direction, and a four-way valve is connected to the pump.
請求項4の熱融通ユニットは、請求項1〜3の何れか1項の発明において、前記一方の貯湯タンクユニットに接続された熱源機は発電装置であり、前記一方の貯湯タンクユニットの貯湯タンクが満蓄状態になった場合に、前記一方の貯湯タンクユニットから前記他方の貯湯タンクユニットへの湯水の移送を行うことを特徴としている。 According to a fourth aspect of the present invention, there is provided the heat interchangeable unit according to any one of the first to third aspects, wherein the heat source connected to the one hot water storage tank unit is a power generator, and the hot water storage tank of the one hot water storage tank unit. When the water storage state becomes full, hot water is transferred from the one hot water storage tank unit to the other hot water storage tank unit.
請求項1の発明によれば、熱融通ユニットは、1対の貯湯タンクユニットの各々の貯湯タンクの底部から排水する為の排水通路に夫々接続される第1,第2接続口と、1対の貯湯タンクユニットの各々の貯湯タンクの上部から出湯する為の出湯通路に夫々接続される第3,第4接続口と、第1,第2接続口同士を連通する第1内部通路と、第3,第4接続口同士を連通する第2内部通路と、第1,第2内部通路に夫々設けられた第1,第2開閉弁と、第1,第2内部通路の少なくとも一方に設けられ且つ湯水を一方向に移送可能なポンプ手段と、第1,第2内部通路と第1,第2開閉弁とポンプ手段とを収納し、且つ第1〜第4接続口を突出させたケース部材とを備えたので、ポンプ手段を駆動することで、少なくとも一方の貯湯タンクユニットの貯湯タンクに蓄熱された熱を湯水の移送を介して他方の貯湯タンクユニットの貯湯タンクへと移送することができる。 According to the first aspect of the present invention, the heat interchange unit includes the first and second connection ports respectively connected to the drainage passages for draining from the bottom of each hot water storage tank of the pair of hot water storage tank units. The third and fourth connection ports respectively connected to the hot water discharge passage for discharging hot water from the upper portion of each hot water storage tank of the hot water storage tank unit, the first internal passage communicating the first and second connection ports, 3, provided in at least one of the second internal passage communicating the fourth connection ports, the first and second on-off valves provided in the first and second internal passages, and the first and second internal passages, respectively. A case member that houses pump means capable of transferring hot water in one direction, first and second internal passages, first and second on-off valves, and pump means, and projects first to fourth connection ports. By driving the pump means, at least one hot water storage tank unit Was stored in the heat storage tank of bets heat via the hot water transport can be transferred to the hot water storage tank of the other of the hot water storage tank unit.
従って、1対の貯湯タンクユニットの各々の排水通路に熱融通ユニットの第1,第2接続口を接続し、1対の貯湯タンクユニットの各々の出湯通路に熱融通ユニットの第3,第4接続口を接続することで、1対の貯湯タンクユニット間の熱融通が実現するので、1対の貯湯タンクユニット間に複雑な配管接続構造や弁部材を設ける必要が無く、既存の貯湯タンクユニットを利用することができ、コストが低減する。熱融通ユニットは、ユニット状に構成されているので、1対の既存の貯湯タンクユニット間に簡単に取り付けることができ、施工性が向上する。 Accordingly, the first and second connection ports of the heat interchange unit are connected to the drainage passages of the pair of hot water storage tank units, and the third and fourth of the heat interchange unit are connected to the hot water discharge passages of the pair of hot water storage tank units. By connecting the connection ports, heat exchange between a pair of hot water storage tank units is realized, so there is no need to provide complicated piping connection structures or valve members between the pair of hot water storage tank units, and existing hot water storage tank units Can be used and the cost is reduced. Since the heat interchange unit is configured in a unit shape, it can be easily attached between a pair of existing hot water storage tank units, and workability is improved.
請求項2の発明によれば、ポンプ手段は、湯水を正逆方向に移送するように切換え可能なポンプで構成されているので、貯湯タンク内の湯水温度に応じて熱の移送先を適宜変更することで、1対の貯湯タンク間の熱融通を効率良く行うことができる。 According to the invention of claim 2, the pump means is constituted by a pump that can be switched so as to transfer hot water in the forward and reverse directions, so that the heat transfer destination is appropriately changed according to the hot water temperature in the hot water storage tank. By doing so, the heat interchange between a pair of hot water storage tanks can be performed efficiently.
請求項3の発明によれば、ポンプ手段は、湯水を一方向にのみ移送可能なポンプで構成され、このポンプに四方弁が接続されたので、安価なポンプを利用して、ポンプ手段を正逆方向に湯水を移送な構造とすることができる。 According to the invention of claim 3, the pump means is constituted by a pump capable of transferring hot water in only one direction, and since the four-way valve is connected to this pump, the pump means is corrected using an inexpensive pump. It can be set as the structure which can transfer hot water in the reverse direction.
請求項4の発明によれば、一方の貯湯タンクユニットに接続された熱源機は発電装置であり、一方の貯湯タンクユニットの貯湯タンクが満蓄状態になった場合に、一方の貯湯タンクユニットから他方の貯湯タンクユニットへの湯水の移送を行うので、発電装置の排熱を回収して貯湯タンクが満蓄状態になった際に熱融通を行うことで、排熱回収用の湯水を確保でき、発電装置の発電運転を継続することができる。 According to the invention of claim 4, the heat source device connected to one hot water storage tank unit is a power generation device, and when the hot water storage tank of one hot water storage tank unit is fully stored, from one hot water storage tank unit. Since the hot water is transferred to the other hot water storage tank unit, hot water for exhaust heat recovery can be secured by recovering the exhaust heat of the power generator and providing heat exchange when the hot water storage tank is fully stored. The power generation operation of the power generator can be continued.
以下、本発明を実施するための形態について実施例に基づいて説明する。 Hereinafter, modes for carrying out the present invention will be described based on examples.
先ずは、本発明の熱融通ユニット10が組み込まれた貯湯給湯システム1の全体構成について簡単に説明する。
図1に示すように、貯湯給湯システム1は、2世帯住宅や集合住宅等の住宅A,Bに対応して夫々構築された2つのシステムからなり、第1,第2熱源機2,3、この第1,第2熱源機2,3に第1,第2加熱循環回路6,7を介して夫々接続された第1,第2貯湯タンクユニット4,5、第1,第2貯湯タンクユニット4,5間に設置された熱融通ユニット10等を備えている。
First, the whole structure of the hot water storage hot-water supply system 1 in which the heat accommodation unit 10 of the present invention is incorporated will be briefly described.
As shown in FIG. 1, the hot water storage and hot water supply system 1 is composed of two systems respectively constructed corresponding to houses A and B such as a two-family house and an apartment house, and the first and second heat source machines 2 and 3, First and second hot water storage tank units 4 and 5 and first and second hot water storage tank units connected to the first and second heat source units 2 and 3 via first and second heating circulation circuits 6 and 7, respectively. The heat exchange unit 10 installed between 4 and 5 is provided.
一方の住宅Aにおいて、第1熱源機2は、例えば、燃料電池発電装置2であり、この燃料電池発電装置2と第1貯湯タンクユニット4とを組み合わせることで燃料電池コージェネレーションシステムを構成し、他方の住宅Bにおいて、第2熱源機3は、例えば、ヒートポンプ式熱源機3であり、このヒートポンプ式熱源機3と第2貯湯タンクユニット5とを組み合わせることでヒートポンプ給湯装置を構成しているが、燃料電池発電装置2やヒートポンプ式熱源機3の構成は公知のものであるので、詳細な説明は省略する。 In one house A, the first heat source unit 2 is, for example, a fuel cell power generation device 2, and a fuel cell cogeneration system is configured by combining the fuel cell power generation device 2 and the first hot water tank unit 4, In the other house B, the second heat source unit 3 is, for example, a heat pump type heat source unit 3, and the heat pump type heat source unit 3 and the second hot water storage tank unit 5 constitute a heat pump hot water supply device. Since the configurations of the fuel cell power generation device 2 and the heat pump heat source unit 3 are known, detailed description thereof is omitted.
次に、第1,第2貯湯タンクユニット4,5について説明する。
図1に示すように、第1貯湯タンクユニット4は、貯湯、給湯、風呂への給湯及び追い焚き、床暖房パネル等の温水暖房端末への温水の供給等の機能を有するものであり、第1貯湯タンク11、第1給水通路13、第1出湯通路15、第1排水通路17等を備えている。第2貯湯タンクユニット5は、第1貯湯タンクユニット4と同様な機能を有するものであり、第2貯湯タンク12、第2給水通路14、第2出湯通路16、第2排水通路18等を備えている。
Next, the first and second hot water storage tank units 4 and 5 will be described.
As shown in FIG. 1, the first hot water storage tank unit 4 has functions such as hot water storage, hot water supply, hot and cold water supply to a bath, supply of hot water to a hot water heating terminal such as a floor heating panel, etc. 1 hot water storage tank 11, first water supply passage 13, first hot water discharge passage 15, first drainage passage 17 and the like are provided. The second hot water storage tank unit 5 has a function similar to that of the first hot water storage tank unit 4, and includes a second hot water storage tank 12, a second water supply passage 14, a second hot water discharge passage 16, a second drainage passage 18, and the like. ing.
尚、第1,第2貯湯タンクユニット4,5は、上記の器具以外にも各種通路類や混合弁や開閉弁等の各種弁類を備えているが、図示は省略する。また、第1,第2貯湯タンクユニット4,5は、同じ機能を備えたものであっても良いし、異なる機能を備えたものであっても良い。 Although the first and second hot water storage tank units 4 and 5 include various passages, various valves such as a mixing valve and an on-off valve in addition to the above-described devices, illustration is omitted. Further, the first and second hot water storage tank units 4 and 5 may have the same function or may have different functions.
次に、第1,第2貯湯タンク11,12について説明する。
図1に示すように、第1,第2貯湯タンク11,12は、第1,第2熱源機2,3で加熱された高温の湯水を夫々貯留するものであり、耐腐食性に優れたステンレス板製の胴部材とその上下両端を塞ぐ1対の鏡板とで夫々構成され、貯留された湯水の放熱を防ぐ為にタンク周囲は断熱材で覆われている。第1,第2貯湯タンク11,12は、同じ容量・形状であっても良く、互いに容量の異なる形状であっても良く、適宜変更可能である。
Next, the first and second hot water storage tanks 11 and 12 will be described.
As shown in FIG. 1, the first and second hot water storage tanks 11 and 12 store high-temperature hot water heated by the first and second heat source units 2 and 3, respectively, and have excellent corrosion resistance. Each body member is made of a stainless steel body member and a pair of end plates that close both upper and lower ends thereof, and the tank periphery is covered with a heat insulating material in order to prevent heat dissipation of the stored hot water. The first and second hot water storage tanks 11 and 12 may have the same capacity and shape, or may have shapes having different capacities, and can be appropriately changed.
尚、第1貯湯タンク11の外周部には、下側から上側に向かって等間隔に複数の温度検出センサ11a〜11dが順に設けられ、第2貯湯タンク12の外周部にも同様に、下側から上側に向かって等間隔に複数の温度検出センサ12a〜12dが順に設けられている。これら複数の温度検出センサ11a〜11d,12a〜12dは、サーミスタ等の公知の温度検出センサであり、第1,第2貯湯タンク11,12内の複数の貯留層の湯水温度を検出可能である。 In addition, a plurality of temperature detection sensors 11a to 11d are sequentially provided at the outer peripheral portion of the first hot water storage tank 11 at equal intervals from the lower side to the upper side. A plurality of temperature detection sensors 12a to 12d are sequentially provided at equal intervals from the side toward the upper side. The plurality of temperature detection sensors 11a to 11d and 12a to 12d are known temperature detection sensors such as a thermistor, and can detect hot water temperatures of the plurality of reservoirs in the first and second hot water storage tanks 11 and 12. .
第1,第2貯湯タンク11,12の底部には、第1,第2加熱循環回路6,7の上流端、第1,第2給水通路13,14の下流端,第1,第2排水通路17,18の上流端が夫々接続されている。第1,第2貯湯タンク11,12の上部には、第1,第2加熱循環回路6,7の下流端、第1,第2出湯通路15,16の上流端が夫々接続されている。第1,第2排水通路17,18の途中部には、手動式の開閉弁17a,18aが夫々設けられている。 At the bottom of the first and second hot water storage tanks 11 and 12, the upstream ends of the first and second heating circulation circuits 6 and 7, the downstream ends of the first and second water supply passages 13 and 14, the first and second drains The upstream ends of the passages 17 and 18 are connected to each other. The upper ends of the first and second hot water storage tanks 11 and 12 are connected to the downstream ends of the first and second heating circulation circuits 6 and 7 and the upstream ends of the first and second hot water supply passages 15 and 16, respectively. Manual type on-off valves 17a and 18a are provided in the middle of the first and second drainage passages 17 and 18, respectively.
第1,第2加熱循環回路6,7は、第1,第2貯湯タンクユニット4,5と第1,第2熱源機2,3との間に湯水を循環させて湯水を加熱する閉回路であり、往き側通路部6a,7a、戻り側通路部等6b,7bを夫々有している。往き側通路部6a,7aと戻り側通路部6b,7bとの間には、第1,第2熱源機2,3の熱交換器(図示略)が夫々接続されている。第1,第2加熱循環回路6,7には、循環ポンプ(図示略)が夫々設けられている。 The first and second heating circulation circuits 6 and 7 are closed circuits that circulate hot water between the first and second hot water storage tank units 4 and 5 and the first and second heat source units 2 and 3 to heat the hot water. And have forward passage portions 6a and 7a, return passage portions 6b and 7b, respectively. The heat exchangers (not shown) of the first and second heat source units 2 and 3 are connected between the forward passage portions 6a and 7a and the return passage portions 6b and 7b, respectively. The first and second heating circulation circuits 6 and 7 are provided with circulation pumps (not shown), respectively.
第1,第2給水通路13,14を介して上水源からの上水を第1,第2貯湯タンク11,12内に夫々補充可能となっており、第1,第2加熱循環回路6,7を介して湯水が夫々加熱され、第1,第2出湯通路15,16を介して第1,第2貯湯タンク11,12内に夫々貯留された高温の湯水(例えば、65〜90℃)を所望の給湯先に出湯することができる。また、第1,第2貯湯タンク11,12内に貯留された湯水は、第1,第2排水通路17,18を介して外部に排水することができる。 It is possible to replenish the first and second hot water storage tanks 11 and 12 with fresh water from the water source via the first and second water supply passages 13 and 14, respectively. Hot water is heated through the first and second hot water passages 15 and 16 and stored in the first and second hot water storage tanks 11 and 12 respectively (for example, 65 to 90 ° C.). Can be discharged to a desired hot water supply destination. The hot water stored in the first and second hot water storage tanks 11 and 12 can be drained to the outside through the first and second drainage passages 17 and 18.
第1,第2貯湯タンクユニット4,5は、第1,第2制御ユニット19,20によって夫々制御される。各種のセンサの検出信号が第1,第2制御ユニット19,20に夫々送信され、これら第1,第2制御ユニット19,20により、第1,第2貯湯タンクユニット4,5の動作、各種のポンプの作動・停止、各種の弁の開閉状態の切り換え及び開度調整等を制御し、各種運転(給湯運転、湯張り運転、追焚き運転、高温差し湯運転、暖房運転、凍結防止運転、湯水加熱運転、排熱回収運転等)を実行する。 The first and second hot water storage tank units 4 and 5 are controlled by the first and second control units 19 and 20, respectively. Detection signals of various sensors are transmitted to the first and second control units 19 and 20, respectively. The operations of the first and second hot water storage tank units 4 and 5 are performed by the first and second control units 19 and 20, respectively. Controls the operation / stop of the pump, switching of the open / close state of various valves and opening adjustment, etc., and various operations (hot water supply operation, hot water operation, reheating operation, high temperature hot water operation, heating operation, anti-freezing operation, Hot water heating operation, exhaust heat recovery operation, etc.).
次に、本発明に関する熱融通ユニット10について説明する。
図1に示すように、熱融通ユニット10は、各々が熱源機に接続された第1,第2貯湯タンクユニット4,5(1対の貯湯タンクユニットに相当する)のうちの少なくとも一方の第1貯湯タンクユニット4の第1貯湯タンク11内に貯留された湯水を他方の第2貯湯タンクユニット5の第2貯湯タンク12へと移送することによって第1,第2貯湯タンクユニット4,5間での熱融通を行うものであり、第1,第2貯湯タンクユニット4,5間に設けられている。
Next, the heat accommodation unit 10 according to the present invention will be described.
As shown in FIG. 1, the heat interchange unit 10 includes at least one of first and second hot water storage tank units 4 and 5 (corresponding to a pair of hot water storage tank units) each connected to a heat source machine. By transferring hot water stored in the first hot water storage tank 11 of the first hot water storage tank unit 4 to the second hot water storage tank 12 of the other second hot water storage tank unit 5, between the first and second hot water storage tank units 4, 5. And is provided between the first and second hot water storage tank units 4 and 5.
即ち、熱融通ユニット10は、第1,第2排水通路17,18に夫々接続される第1,第2接続口21,22と、第1,第2出湯通路15,16に夫々接続される第3,第4接続口23,24と、第1,第2接続口21,22同士を連通する第1内部通路25と、第3,第4接続口23,24同士を連通する第2内部通路26と、第1,第2内部通路25,26に夫々設けられた第1,第2開閉弁27,28と、第1,第2内部通路25,26の少なくとも一方に設けられ且つ湯水を一方向に移送可能なポンプ手段29と、第1,第2内部通路25,26と第1,第2開閉弁27,28とポンプ手段29とを収納し、且つ第1〜第4接続口21〜24を突出させたケース部材32とを備えている。 That is, the heat accommodation unit 10 is connected to the first and second connection ports 21 and 22 connected to the first and second drainage passages 17 and 18, respectively, and the first and second hot water discharge passages 15 and 16, respectively. The 3rd and 4th connection ports 23 and 24, the 1st internal passage 25 which connects the 1st and 2nd connection ports 21 and 22, and the 2nd inside which connects the 3rd and 4th connection ports 23 and 24 The hot water is provided in at least one of the passage 26, the first and second on-off valves 27 and 28 provided in the first and second internal passages 25 and 26, and the first and second internal passages 25 and 26, respectively. The pump means 29 that can be transferred in one direction, the first and second internal passages 25 and 26, the first and second on-off valves 27 and 28, and the pump means 29 are accommodated, and the first to fourth connection ports 21 are accommodated. And a case member 32 protruding from 24 to 24.
第1〜第4接続口21〜24は、箱状のケース部材32の外周壁部に外側に突出状に夫々設置され、ユニオン継手又は急速着脱式継手の構造を夫々備えている。尚、第1〜第4接続口21〜24には、水抜き栓が設けられていないが、水抜き栓が設けられた構造であっても良い。 The 1st-4th connection ports 21-24 are each installed in the outer peripheral wall part of the box-shaped case member 32 so that it may protrude outside, and are each equipped with the structure of a union joint or a quick detachable joint. In addition, although the drain plug is not provided in the 1st-4th connection ports 21-24, the structure provided with the drain plug may be sufficient.
第1,第2排水通路17,18の開閉弁17a,18aの上流側に一端部が接続された第1,第2接続通路36,37の他端部には、第1,第2接続口21,22の形状に対応した取り外し可能な継手が夫々設けられ、第1,第2出湯通路15,16の途中部に一端部が接続された第3,第4接続通路38,39の他端部には、第3,第4接続口23,24の形状に対応した取り外し可能な継手が夫々設けられている。 The first and second connection ports are connected to the other ends of the first and second connection passages 36 and 37 whose one end is connected to the upstream side of the on-off valves 17a and 18a of the first and second drainage passages 17 and 18, respectively. Removable joints corresponding to the shapes of 21 and 22 are provided, respectively, and the other ends of the third and fourth connection passages 38 and 39 each having one end connected to a middle portion of the first and second hot water passages 15 and 16. Each part is provided with a detachable joint corresponding to the shape of the third and fourth connection ports 23 and 24.
熱融通ユニット10の組み付け時、第1〜第4接続通路36〜39の一端部を第1,第2排水通路17,18と第1,第2出湯通路15,16に夫々接続し、第1〜第4接続通路36〜39の他端部を各接続口21〜24に夫々接続することで、熱融通ユニット10を組み付け可能であるので、第1,第2貯湯タンクユニット4,5間に熱融通ユニット10を容易に設置することができる。 When the heat interchangeable unit 10 is assembled, one end portions of the first to fourth connection passages 36 to 39 are connected to the first and second drainage passages 17 and 18 and the first and second hot water passages 15 and 16, respectively. Since the heat interchangeable unit 10 can be assembled by connecting the other ends of the fourth connection passages 36 to 39 to the connection ports 21 to 24, respectively, between the first and second hot water storage tank units 4 and 5. The heat accommodation unit 10 can be easily installed.
第1,第2開閉弁27,28は、第1,第2貯湯タンク11,12間の熱融通が行われない場合には閉弁状態に設定され、第1,第2内部通路25,26を常時遮断する。熱融通運転時には、第1,第2開閉弁27,28は開弁状態に設定され、第1,第2内部通路25,26を導通状態にする。第1,第2開閉弁27,28は、熱融通用制御ユニット33によって開閉駆動制御される。 The first and second on-off valves 27 and 28 are set in a closed state when heat exchange between the first and second hot water storage tanks 11 and 12 is not performed, and the first and second internal passages 25 and 26 are set. Is always shut off. During the heat interchange operation, the first and second on-off valves 27 and 28 are set to the open state, and the first and second internal passages 25 and 26 are brought into a conducting state. The first and second on-off valves 27 and 28 are controlled to be opened and closed by the heat interchange control unit 33.
ポンプ手段29は、第1内部通路25に設けられ、湯水を第2接続口22(第2貯湯タンク12の下部)から第1接続口21(第1貯湯タンク11の下部)への一方向にのみ移送可能な公知の遠心ポンプで構成されている。このポンプ手段29は、熱融通用制御ユニット33によって回転駆動制御される。 The pump means 29 is provided in the first internal passage 25 and allows hot water to flow in one direction from the second connection port 22 (below the second hot water storage tank 12) to the first connection port 21 (below the first hot water storage tank 11). It consists of a known centrifugal pump that can only be transported. The pump means 29 is rotationally driven and controlled by the heat accommodation control unit 33.
熱融通ユニット10は、熱融通用制御ユニット33によって制御される。熱融通用制御ユニット33は、第1,第2制御ユニット19,20と通信可能に構成されている。第1,第2貯湯タンク11,12の底部の温度検出センサ11a,12aの検出信号が、第1,第2制御ユニット19,20を介して熱融通用制御ユニット33に夫々送信され、この熱融通用制御ユニット33により、第1,第2開閉弁27,28の切換えとポンプ手段29を制御し、第1,第2貯湯タンク11,12間の熱融通運転制御を実行する。 The heat accommodation unit 10 is controlled by the heat accommodation control unit 33. The heat accommodation control unit 33 is configured to be able to communicate with the first and second control units 19 and 20. The detection signals of the temperature detection sensors 11a and 12a at the bottoms of the first and second hot water storage tanks 11 and 12 are transmitted to the heat interchange control unit 33 via the first and second control units 19 and 20, respectively. The interchange control unit 33 controls the switching of the first and second on-off valves 27 and 28 and the pump means 29 to execute the heat interchange operation control between the first and second hot water storage tanks 11 and 12.
次に、熱融通用制御ユニット33により自動的に実行される、熱融通運転制御について、図2のフローチャートに基づいて説明する。尚、図中の符号Si(i=1,2,・・)は各ステップを示す。この熱融通運転制御の制御プログラムは、熱融通用制御ユニット33に予め格納されている。 Next, heat accommodation operation control automatically executed by the heat accommodation control unit 33 will be described based on the flowchart of FIG. In the figure, the symbol Si (i = 1, 2,...) Indicates each step. The control program for the heat interchange operation control is stored in advance in the heat interchange control unit 33.
図2のフローチャートにおいて、この制御が開始されると、最初にS1において、第1制御ユニット19からの信号等に基づいて、第1貯湯タンクユニット4が第1熱源機2(燃料電池発電装置2)の排熱を回収して第1貯湯タンク11への蓄熱を行う排熱回収運転中である否かを判定する。第1貯湯タンクユニット4が排熱回収運転中の場合、つまり、S1の判定がYesの場合、S2に移行し、S1の判定がNoのうちはS1を繰り返す。 In the flowchart of FIG. 2, when this control is started, first, in S <b> 1, the first hot water tank unit 4 is connected to the first heat source unit 2 (fuel cell power generator 2) based on a signal from the first control unit 19. ) Is recovered to determine whether or not the exhaust heat recovery operation for storing heat in the first hot water storage tank 11 is in progress. When the first hot water storage tank unit 4 is in the exhaust heat recovery operation, that is, when the determination of S1 is Yes, the process proceeds to S2, and S1 is repeated while the determination of S1 is No.
次に、S2において、第1貯湯タンク11の底部の温度検出センサ11aの検出信号を読み込み、この検出信号に基づいて、第1貯湯タンク11の底部の湯水温度を算出して、S3に移行し、第1貯湯タンク11の底部の湯水温度が、第1設定温度(例えば60℃)以上か否かを判定し、湯水温度が第1設定温度以上の場合、つまり、S3の判定がYesの場合、S4に移行し、湯水温度が第1設定温度より低い場合、つまり、S3の判定がNoの場合、S2に戻る。 Next, in S2, the detection signal of the temperature detection sensor 11a at the bottom of the first hot water storage tank 11 is read, and based on this detection signal, the hot water temperature at the bottom of the first hot water storage tank 11 is calculated, and the process proceeds to S3. It is determined whether the hot water temperature at the bottom of the first hot water storage tank 11 is equal to or higher than a first set temperature (for example, 60 ° C.), and when the hot water temperature is equal to or higher than the first set temperature, that is, when the determination of S3 is Yes. When the hot water temperature is lower than the first set temperature, that is, when the determination of S3 is No, the process returns to S2.
つまり、第1貯湯タンク11から第1加熱循環回路6を介して第1熱源機2(燃料電池発電装置2)へ流れる湯水の温度は、第1貯湯タンク11の蓄熱状況により上昇し、やがて、第1貯湯タンク11が満蓄状態(高温の湯水で満タンの状態)となると、第1熱源機2の排熱回収用の熱交換器への湯水の温度が高くなりすぎて排熱回収が困難になる。 That is, the temperature of the hot water flowing from the first hot water storage tank 11 to the first heat source machine 2 (fuel cell power generator 2) via the first heating circulation circuit 6 rises due to the heat storage state of the first hot water storage tank 11, and eventually, When the first hot water storage tank 11 is in a fully stored state (a state where the hot water is full), the temperature of the hot water to the heat exchanger for exhaust heat recovery of the first heat source unit 2 becomes too high, and exhaust heat recovery is performed. It becomes difficult.
第1貯湯タンク11の湯水は、第1熱源機2の発電用水の生成や第1熱源機2の器具の冷却に利用されるので、第1貯湯タンク11の湯水が高温になると、第1熱源機2の発電継続が困難になる。そこで、第1貯湯タンク11の満蓄時には、第1熱源機2へ流れる湯水温度を低下させる必要が生じる。 The hot water in the first hot water storage tank 11 is used for generating power generation water for the first heat source machine 2 and cooling the appliances of the first heat source machine 2, so when the hot water in the first hot water storage tank 11 becomes hot, the first heat source It becomes difficult to continue power generation by the machine 2. Therefore, when the first hot water storage tank 11 is fully stored, the temperature of the hot water flowing to the first heat source machine 2 needs to be reduced.
次に、S4において、第1貯湯タンク11が満蓄状態になった場合、第1貯湯タンクユニット4から第2貯湯タンクユニット5への湯水の移送を介して行う熱移送を開始する。即ち、熱融通用制御ユニット33は、第1,第2開閉弁27,28を開弁状態に切換え、ポンプ手段29の駆動を開始し、S5に移行する。 Next, in S4, when the 1st hot water storage tank 11 becomes a full storage state, the heat transfer performed via the transfer of the hot water from the 1st hot water storage tank unit 4 to the 2nd hot water storage tank unit 5 is started. That is, the heat interchange control unit 33 switches the first and second on-off valves 27 and 28 to the valve open state, starts driving the pump means 29, and proceeds to S5.
ここで、第2貯湯タンクユニット5(ヒートポンプ給湯装置)側の第2貯湯タンク12の容量は、一般的に、第1貯湯タンクユニット4(燃料電池発コージェネレーションシステム)側の第1貯湯タンク11の容量より大きく、また、第2貯湯タンクユニット5側においては、夜間割引の安価な電力を利用して、第2貯湯タンク12内の湯水を第2加熱循環回路7に循環させてヒートポンプ式熱源機3で加熱して、その加熱された湯水を第2貯湯タンク12内に戻して貯留しているので、第1貯湯タンク11と比較して第2貯湯タンク12は満蓄状態になり難く、第2貯湯タンク12の湯水温度は、第1貯湯タンク11の湯水温度より低い場合が多い。 Here, the capacity of the second hot water storage tank 12 on the second hot water storage tank unit 5 (heat pump hot water supply device) side is generally the first hot water storage tank 11 on the first hot water storage tank unit 4 (fuel cell cogeneration system) side. In addition, on the second hot water storage tank unit 5 side, the hot water in the second hot water storage tank 12 is circulated to the second heating circuit 7 by using cheap power at night discount, and the heat pump heat source Since it is heated by the machine 3 and the heated hot water is returned and stored in the second hot water storage tank 12, the second hot water storage tank 12 is less likely to be fully stored compared to the first hot water storage tank 11. The hot water temperature of the second hot water storage tank 12 is often lower than the hot water temperature of the first hot water storage tank 11.
そこで、S4では、第2貯湯タンク12の底部の湯水を、第2排水通路18から第1内部通路25と第1排水通路17を通して第1貯湯タンク11の底部に流し、この供給された湯水の圧力によって、第1貯湯タンク11の上部の高温の湯水を、第1出湯通路15から第2内部通路26と第2出湯通路16を通して、第2貯湯タンク12の上部に供給することで、第1貯湯タンク11の高温の湯水を第2貯湯タンク12に移送する(図1矢印参照)。 Therefore, in S4, the hot water at the bottom of the second hot water storage tank 12 is caused to flow from the second drainage passage 18 to the bottom of the first hot water storage tank 11 through the first internal passage 25 and the first drainage passage 17, and the supplied hot water is supplied. By supplying hot hot water at the upper part of the first hot water storage tank 11 to the upper part of the second hot water storage tank 12 through the second internal passage 26 and the second hot water discharge path 16 by the pressure, Hot water in the hot water storage tank 11 is transferred to the second hot water storage tank 12 (see arrow in FIG. 1).
次に、S5において、第1貯湯タンク11の中段部の温度検出センサ11cの検出信号を読み込み、この検出信号に基づいて、第1貯湯タンク11の中段部の湯水温度を算出して、S6に移行し、第1貯湯タンク11の中段部の湯水温度が、第2設定温度(例えば25℃)以下か否かを判定し、湯水温度が第2設定温度以下の場合、つまり、S6の判定がYesの場合、S7に移行し、湯水温度が第2設定温度より高い場合、つまり、S6の判定がNoの場合、S5に戻る。 Next, in S5, the detection signal of the temperature detection sensor 11c in the middle stage of the first hot water storage tank 11 is read, and the hot water temperature in the middle stage of the first hot water storage tank 11 is calculated based on this detection signal, and in S6. It is determined whether or not the hot water temperature in the middle portion of the first hot water storage tank 11 is equal to or lower than the second set temperature (for example, 25 ° C.). In the case of Yes, it transfers to S7, and when hot water temperature is higher than 2nd setting temperature, ie, when determination of S6 is No, it returns to S5.
次に、S7において、第1貯湯タンク11内に熱移送可能な熱がなくなったので、又は、発電を継続できる程度の湯水を確保できたので、第1貯湯タンクユニット4から第2貯湯タンクユニット5への湯水の移送を介して行う熱移送を停止する。即ち、熱融通用制御ユニット33は、第1,第2開閉弁27,28を閉弁状態に切換え、ポンプ手段29の駆動を停止し、S2に戻り、一連の制御を継続して実行する。 Next, in S7, there is no heat that can be transferred to the first hot water storage tank 11, or hot water that can continue power generation is secured, so the first hot water storage tank unit 4 to the second hot water storage tank unit. The heat transfer performed through the transfer of hot water to 5 is stopped. That is, the heat accommodation control unit 33 switches the first and second on-off valves 27 and 28 to the closed state, stops the driving of the pump means 29, returns to S2, and continuously executes a series of controls.
尚、本実施例では、第2貯湯タンク12が満蓄状態になった場合に、第1,第2貯湯タンク11,12間の熱移送を停止しているが、特にこれに限定する必要はなく、熱移送開始から所定時間が経過した後に、熱移送を停止するようにしても良い。また、第2貯湯タンク12が満蓄状態の場合は、第1,第2貯湯タンク11,12間の熱移送を行わず、例えば、第1加熱循環回路6の途中部に設置されたラジエータ(図示略)等を起動して、第1加熱循環回路6を流れる湯水を強制的に冷却しながら排熱回収運転を実行しても良い。 In the present embodiment, when the second hot water storage tank 12 becomes full, the heat transfer between the first and second hot water storage tanks 11 and 12 is stopped. Alternatively, the heat transfer may be stopped after a predetermined time has elapsed from the start of the heat transfer. Moreover, when the 2nd hot water storage tank 12 is a full storage state, heat transfer between the 1st, 2nd hot water storage tanks 11 and 12 is not performed, for example, the radiator (installed in the middle part of the 1st heating circulation circuit 6 ( Or the like, and the exhaust heat recovery operation may be executed while forcibly cooling the hot water flowing through the first heating circuit 6.
次に、本発明の熱融通ユニット10の作用及び効果について説明する。
熱融通ユニット10は、第1,第2排水通路17,18に夫々接続される第1,第2接続口21,22と、第1,第2出湯通路15,16に夫々接続される第3,第4接続口23,24と、第1,第2接続口21,22同士を連通する第1内部通路25と、第3,第4接続口23,24同士を連通する第2内部通路26と、第1,第2内部通路25,26に夫々設けられた第1,第2開閉弁27,28と、第1,第2内部通路25,26の少なくとも一方に設けられ且つ湯水を一方向に移送可能なポンプ手段29と、第1,第2内部通路25,26と第1,第2開閉弁27,28とポンプ手段29とを収納し、且つ第1〜第4接続口21〜24を突出させたケース部材32とを備えたので、ポンプ手段29を駆動することで、少なくとも一方の貯湯タンクユニット4の貯湯タンク内に蓄熱された熱を湯水の移送を介して他方の貯湯タンクユニットの貯湯タンク5へと移送することができる。
Next, the operation and effect of the heat accommodation unit 10 of the present invention will be described.
The heat accommodation unit 10 is connected to the first and second connection ports 21 and 22 connected to the first and second drainage passages 17 and 18, respectively, and the third connected to the first and second hot water discharge passages 15 and 16, respectively. , Fourth connection ports 23, 24, first internal passage 25 communicating between the first and second connection ports 21, 22, and second internal passage 26 communicating between the third and fourth connection ports 23, 24. And the first and second on-off valves 27 and 28 provided in the first and second internal passages 25 and 26, respectively, and the hot and cold water provided in at least one of the first and second internal passages 25 and 26 in one direction. The pump means 29, the first and second internal passages 25 and 26, the first and second on-off valves 27 and 28, and the pump means 29 are accommodated in the first to fourth connection ports 21 to 24. And the case member 32 protruding from the at least one side by driving the pump means 29. The heat stored in the hot water storage tank of the hot water storage tank unit 4 via the hot water transport can be transferred to the hot water storage tank 5 of the other of the hot water storage tank unit.
従って、第1,第2排水通路17,18に熱融通ユニット10の第1,第2接続口21,22を接続し、第1,第2出湯通路15,16に熱融通ユニット10の第3,第4接続口23,24を接続することで、第1,第2貯湯タンクユニット4,5間の熱融通が実現するので、第1,第2貯湯タンクユニット4,5間に複雑な配管接続構造や弁部材を設ける必要が無く、既存の貯湯タンクユニットを利用することができ、コストが低減する。熱融通ユニット10は、ユニット状に構成されているので、第1,第2貯湯タンクユニット4,5間に簡単に取り付けることができ、施工性が向上する。 Accordingly, the first and second connection ports 21 and 22 of the heat accommodation unit 10 are connected to the first and second drainage passages 17 and 18, and the third of the heat accommodation unit 10 is connected to the first and second outlet hot water passages 15 and 16. By connecting the fourth connection ports 23 and 24, heat exchange between the first and second hot water storage tank units 4 and 5 is realized, so that complicated piping is provided between the first and second hot water storage tank units 4 and 5. There is no need to provide a connection structure or a valve member, an existing hot water storage tank unit can be used, and the cost is reduced. Since the heat interchangeable unit 10 is configured in a unit shape, it can be easily attached between the first and second hot water storage tank units 4 and 5 and the workability is improved.
第1貯湯タンクユニット4に接続された第1熱源機2は燃料電池発電装置2であり、第1貯湯タンクユニット4の第1貯湯タンク11が満蓄状態になった場合に、第1貯湯タンクユニット4から第2貯湯タンクユニット5への湯水の移送を行うので、燃料電池発電装置2の排熱を回収して第1貯湯タンク11が満蓄状態になった際に熱融通を行うことで、排熱回収用の湯水を確保でき、燃料電池発電装置2の発電運転を継続することができる。 The first heat source device 2 connected to the first hot water storage tank unit 4 is the fuel cell power generator 2, and when the first hot water storage tank 11 of the first hot water storage tank unit 4 is fully stored, the first hot water storage tank. Since the hot water is transferred from the unit 4 to the second hot water storage tank unit 5, the exhaust heat of the fuel cell power generation device 2 is recovered and heat exchange is performed when the first hot water storage tank 11 is fully stored. Thus, hot water for exhaust heat recovery can be secured, and the power generation operation of the fuel cell power generation device 2 can be continued.
次に、前記実施例を部分的に変更した形態について説明する。
[1]前記実施例において、第1熱源機2として燃料電池発電装置2、第2熱源機3としてヒートポンプ式熱源機3の場合について説明したが、これらに限定する必要はなく、第1,第2熱源機2,3として、ガスエンジン発電装置、ヒートポンプ式熱源機、太陽熱温水パネル等を採用しても良いし、これら以外にも種々の公知なものを採用可能である。
Next, a mode in which the above embodiment is partially changed will be described.
[1] In the above embodiment, the case of the fuel cell power generation device 2 as the first heat source unit 2 and the heat pump type heat source unit 3 as the second heat source unit 3 has been described. However, the present invention is not limited to these. As the two heat source units 2 and 3, a gas engine power generation device, a heat pump type heat source unit, a solar hot water panel, or the like may be employed, and various other well-known ones may be employed.
[2]図3に示すように、熱融通ユニット10Aにおいて、ポンプ手段29Aは、湯水を正逆方向に移送するように切換え可能な公知のポンプで構成されても良い。この構造によれば、第1,第2貯湯タンク11,12内の湯水温度に応じて熱の移送先を適宜変更することで、第1,第2貯湯タンク11,12間の熱融通を効率良く行うことができる。 [2] As shown in FIG. 3, in the heat accommodation unit 10 </ b> A, the pump means 29 </ b> A may be configured by a known pump that can be switched so as to transfer hot and cold water in forward and reverse directions. According to this structure, the heat transfer between the first and second hot water storage tanks 11 and 12 is efficiently performed by appropriately changing the heat transfer destination according to the hot water temperature in the first and second hot water storage tanks 11 and 12. Can be done well.
[3]図4に示すように、熱融通ユニット10Bにおいて、ポンプ手段29Bは、湯水を一方向にのみ移送可能な公知のポンプで構成され、このポンプに四方弁35が接続された構造であっても良い。この構造によれば、安価なポンプを利用して、ポンプ手段29Bを正逆方向に湯水を移送な構造とすることができる。 [3] As shown in FIG. 4, in the heat accommodation unit 10B, the pump means 29B is constituted by a known pump capable of transferring hot water only in one direction, and a four-way valve 35 is connected to this pump. May be. According to this structure, an inexpensive pump can be used to make the pump means 29B structured to transfer hot water in the forward and reverse directions.
[4]図5に示すように、熱融通ユニット10Cにおいて、ポンプ手段29Cは、第1,第2内部通路25,26の両方に設けられた構造であっても良い。即ち、ポンプ手段29Cは、湯水を一方向にのみ移送可能に構成された2つの公知のポンプ29a,29bを備えている。この構造によれば、第1,第2貯湯タンク11,12内の湯水温度に応じて熱の移送先を適宜変更することで、第1,第2貯湯タンク11,12間の熱融通を効率良く行うことができる。 [4] As shown in FIG. 5, in the heat accommodation unit 10 </ b> C, the pump means 29 </ b> C may have a structure provided in both the first and second internal passages 25 and 26. That is, the pump means 29C includes two known pumps 29a and 29b configured to be able to transfer hot and cold water only in one direction. According to this structure, the heat transfer between the first and second hot water storage tanks 11 and 12 is efficiently performed by appropriately changing the heat transfer destination according to the hot water temperature in the first and second hot water storage tanks 11 and 12. Can be done well.
[5]前記実施例において、第1,第2貯湯タンク11,12内の湯水を第1,第2加熱循環回路6,7に直接循環させて湯水加熱運転を実行しているが、これに限定する必要はなく、加熱循環回路に不凍液等の熱媒体を循環させ、この不凍液を利用して第1,第2貯湯タンク11,12内の湯水を間接的に加熱する構造であっても良い。 [5] In the above embodiment, the hot water in the first and second hot water storage tanks 11 and 12 is directly circulated to the first and second heating circulation circuits 6 and 7, and the hot water heating operation is executed. It is not necessary to limit, and a structure in which a heat medium such as antifreeze is circulated in the heating circuit and the hot water in the first and second hot water storage tanks 11 and 12 is indirectly heated using the antifreeze may be used. .
[6]その他、当業者であれば、本発明の趣旨を逸脱することなく、前記実施例に種々の変更を付加した形態で実施可能であり、本発明はそのような変更形態を包含するものである。 [6] In addition, those skilled in the art can implement the present invention by adding various modifications without departing from the spirit of the present invention, and the present invention includes such modifications. It is.
2,3 第1,第2熱源機
4,5 第1,第2貯湯タンクユニット
10〜10C 熱融通ユニット
11,12 第1,第2貯湯タンク
13,14 第1,第2給水通路
15,16 第1,第2出湯通路
17,18 第1,第2排水通路
21〜24 第1〜第4接続口
25,26 第1,第2内部通路
27,28 第1,第2開閉弁
29〜29C ポンプ手段
32 ケース部材
35 四方弁
2, 3 1st, 2nd heat source machine 4, 5 1st, 2nd hot water storage tank unit 10-10C Heat interchange unit 11, 12 1st, 2nd hot water storage tank 13, 14 1st, 2nd water supply passages 15, 16 First and second hot water passages 17 and 18 First and second drainage passages 21 to 24 First to fourth connection ports 25 and 26 First and second internal passages 27 and 28 First and second on-off valves 29 to 29C Pump means 32 Case member 35 Four-way valve
Claims (4)
前記1対の貯湯タンクユニットの各々の貯湯タンクの底部から排水する為の排水通路に夫々接続される第1,第2接続口と、
前記1対の貯湯タンクユニットの各々の貯湯タンクの上部から出湯する為の出湯通路に夫々接続される第3,第4接続口と、
前記第1,第2接続口同士を連通する第1内部通路と、
前記第3,第4接続口同士を連通する第2内部通路と、
前記第1,第2内部通路に夫々設けられた第1,第2開閉弁と、
前記第1,第2内部通路の少なくとも一方に設けられ且つ湯水を一方向に移送可能なポンプ手段と、
前記第1,第2内部通路と前記第1,第2開閉弁と前記ポンプ手段とを収納し、且つ前記第1〜第4接続口を突出させたケース部材とを備えたことを特徴とする熱融通ユニット。 The pair of hot water stored in the hot water storage tank of at least one hot water storage tank unit of the pair of hot water storage tank units each connected to the heat source unit is transferred to the hot water storage tank of the other hot water storage tank unit. A heat interchange unit for performing heat interchange between hot water storage tank units,
First and second connection ports respectively connected to drainage passages for draining from the bottom of each hot water storage tank of the pair of hot water storage tank units;
Third and fourth connection ports respectively connected to a hot water outlet passage for discharging hot water from the upper part of each hot water storage tank of the pair of hot water storage tank units;
A first internal passage communicating the first and second connection ports;
A second internal passage communicating the third and fourth connection ports;
First and second on-off valves respectively provided in the first and second internal passages;
Pump means provided in at least one of the first and second internal passages and capable of transferring hot water in one direction;
The first and second internal passages, the first and second on-off valves, and the pump means are housed, and a case member that protrudes the first to fourth connection ports is provided. Heat interchange unit.
The heat source device connected to the one hot water storage tank unit is a power generation device, and when the hot water storage tank of the one hot water storage tank unit becomes full, the one hot water storage tank unit to the other hot water storage tank unit. The heat accommodation unit according to any one of claims 1 to 3, wherein hot water is transferred to the water.
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