JP5176795B2 - Water heater - Google Patents

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Publication number
JP5176795B2
JP5176795B2 JP2008227929A JP2008227929A JP5176795B2 JP 5176795 B2 JP5176795 B2 JP 5176795B2 JP 2008227929 A JP2008227929 A JP 2008227929A JP 2008227929 A JP2008227929 A JP 2008227929A JP 5176795 B2 JP5176795 B2 JP 5176795B2
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hot water
temperature
storage tank
heat source
mixing unit
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JP2010060234A (en
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昌知 吉村
寿一 岡田
耕平 山口
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies

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  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Description

本発明はソーラー給湯機、ガス発電、燃料電池等の廃熱を給湯に使用することを目的とした貯湯式コジェネレーションシステムに代表される貯湯式の給湯装置に関するものである。   The present invention relates to a hot water storage type hot water supply apparatus represented by a hot water storage type cogeneration system for the purpose of using waste heat of a solar water heater, gas power generation, fuel cell, etc. for hot water supply.

従来の廃熱を給湯に使用することを目的とした貯湯式の給湯装置では次に記載されているようなものがあった。   Conventional hot water storage type hot water supply apparatuses intended to use waste heat for hot water supply have been described as follows.

図３に示すように、この種の貯湯式コジェネレーションシステムでは、主給湯器Ｘと、ソーラー給湯器Ｙと、そのソーラー給湯器Ｙを主給湯器Ｘ側へ接続するソーラー給湯接続ユニットＺを有し、ソーラー給湯接続ユニットＺに設けたソーラー給湯接続コントローラ１、主給湯器Ｘに設けて主給湯器Ｘの運転制御を行う主コントローラ２および主コントローラ２を遠隔制御するリモコン３を用いて主給湯器Ｘの運転制御を行っていた。   As shown in FIG. 3, this type of hot water storage cogeneration system has a main water heater X, a solar water heater Y, and a solar water heater connection unit Z for connecting the solar water heater Y to the main water heater X side. The main hot water supply using the solar hot water connection controller 1 provided in the solar hot water supply connection unit Z, the main controller 2 provided in the main hot water heater X for controlling the operation of the main hot water heater X, and the remote controller 3 for remotely controlling the main controller 2 The operation of the device X was controlled.

ここでリモコン３から主コントローラ２を介し制御情報を受けたソーラー給湯接続コントローラ１が給湯接続ユニットＺ内の混合調整弁４を動作せしめて、リモコン３で指令した設定温度になるよう制御を行っていた（例えば、特許文献１参照）。   Here, the solar hot water supply connection controller 1 that receives control information from the remote controller 3 via the main controller 2 operates the mixing adjustment valve 4 in the hot water supply connection unit Z so that the set temperature commanded by the remote controller 3 is reached. (For example, see Patent Document 1).

なお、ソーラー給湯器Ｙには貯湯タンク５が設けてあり、給湯接続ユニットＺ内の混合調整弁４は、貯湯タンク５内の廃熱温水と水道などから給水された低温湯水を混合して所定の温水を供給する。
特開平１０−４７７５２号公報 In addition, the hot water storage tank 5 is provided in the solar water heater Y, and the mixing adjustment valve 4 in the hot water supply connection unit Z mixes the waste heat hot water in the hot water storage tank 5 with the low temperature hot water supplied from a water supply or the like. Supply hot water.
Japanese Patent Laid-Open No. 10-47752

しかしながら、上記従来の構成では、主給湯器Ｘを制御する主コントローラ２が故障し、貯湯タンク５内の廃熱温水と低温湯水を混合して所定の温水を供給する独立して設置した給湯接続ユニットＺを制御するソーラー給湯接続コントローラ１に対して、リモコン３で設定した所定の出湯温度を与えられなくなった場合、給湯を行う出湯口から予期せぬ高温出湯をすることにより、使用者に対し重大な損傷を与える可能性があるという課題を有していた。   However, in the above-described conventional configuration, the main controller 2 that controls the main water heater X fails, and a hot water supply connection that is installed independently to supply predetermined hot water by mixing waste hot water and low temperature hot water in the hot water storage tank 5 is provided. When the predetermined hot water temperature set by the remote controller 3 can no longer be given to the solar hot water connection controller 1 that controls the unit Z, an unexpected high temperature hot water is discharged from the hot water outlet that supplies hot water to the user. The problem was that it could cause serious damage.

本発明は、上記従来の課題を解決するもので、主給湯器の主コントローラが故障しても高温出湯することのない安全性の高い貯湯式の給湯装置を提供することを目的とする。   SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a hot water storage type hot water supply device that does not generate hot hot water even when a main controller of a main water heater fails.

上記従来の課題を解決するために、本発明の給湯装置は独立して設置した混合ユニット（以下第１の混合ユニット）と第１の混合ユニットと平行に設置され、独立した貯湯タンクコントローラにより出湯温度制御を行う貯湯タンク内の廃熱温水と低温湯水を混合して所定の温水を供給する第２の混合装置（以下第２の混合ユニット）により温度制御をするようにしたものである。
In order to solve the above-described conventional problems, the hot water supply apparatus of the present invention is installed in parallel with the independently installed mixing unit (hereinafter referred to as the first mixing unit) and the first mixing unit, and the hot water is discharged by an independent hot water storage tank controller. Temperature control is performed by a second mixing device (hereinafter referred to as a second mixing unit) that mixes waste hot water and low-temperature hot water in a hot water storage tank that performs temperature control and supplies predetermined hot water.

上記発明によれば、主たる給湯機の制御部が故障し、第１の混合ユニットから高温出湯がされた場合、独立した貯湯タンクコントローラにより制御された出湯温センサで異常温度を検出し、第２の混合ユニットにより出湯温度を低下させることができる。
According to the above invention, when the controller of the main water heater fails and high temperature hot water is discharged from the first mixing unit, an abnormal temperature is detected by the hot water temperature sensor controlled by the independent hot water storage tank controller, and the second Ride hot water temperature by the mixing unit can be reduced in.

本発明の給湯装置によれば、主たる給湯機の制御部が故障し、第１の混合ユニットから高温出湯がされた場合、独立した貯湯タンクコントローラにより制御された出湯温センサで異常温度を検出し、第２の混合ユニットにより出湯温度を低下させることができるので、主たる給湯機の制御部が故障しても不用意な高温出湯のない、極めて安全性の高い給湯装置を提供することができる。
According to the hot water supply apparatus of the present invention, when the control unit of the main water heater fails and high temperature hot water is discharged from the first mixing unit, an abnormal temperature is detected by the hot water temperature sensor controlled by an independent hot water storage tank controller. , it is possible to reduce the by Ride hot water temperature in the second mixing unit, no inadvertent hot tapping control unit even if the failure of the main water heater, to provide a very high safety water heater Can do.

第１の発明は、湯水の加熱を行う第１の熱源および第２の熱源と、第１の熱源により加熱された湯水を貯える貯湯タンクと、貯湯タンクに貯えられた湯水と低温湯水を混合するとともに第２の熱源を介して利用給湯口へ湯水を導く第１の混合ユニットと、貯湯タンクに貯えられた湯水と低温湯水を混合するとともに利用給湯口へ湯水を導く第２の混合ユニットとを設け、第１の混合ユニットは貯湯タンクに貯えられた湯水と低温湯水の混合湯水
の温度に基づいて貯湯タンクに貯えられた湯水と低温湯水の混合割合を制御し、第２の混合ユニットは利用給湯口に供給される湯水の温度に基づいて貯湯タンクに貯えられた湯水と低温湯水の混合割合を制御することにより、主たる熱源機の制御コントローラが故障しても第２の混合ユニットにより低温湯水が利用給湯口へ適量供給されるので、高温出湯を防止することができる。
1st invention mixes the 1st heat source and 2nd heat source which heat hot water, the hot water storage tank which stores the hot water heated by the 1st heat source, the hot water stored in the hot water storage tank, and low temperature hot water And a first mixing unit that guides hot water to the hot water supply via a second heat source, and a second mixing unit that mixes hot water stored in the hot water storage tank with low-temperature hot water and guides hot water to the hot water supply. The first mixing unit controls the mixing ratio of hot water and low temperature hot water stored in the hot water tank based on the temperature of the mixed hot water and low temperature hot water stored in the hot water tank, and the second mixing unit is used By controlling the mixing ratio of hot water and low temperature hot water stored in the hot water storage tank based on the temperature of hot water supplied to the hot water outlet, even if the controller of the main heat source machine fails, the second mixing unit Since hot water water is a suitable amount supplied to the utilization hot water port, it is possible to prevent the high temperature hot water.

第２の発明は、特に第１の発明において、第１の混合ユニットと平行に設置され、独立した貯湯タンクコントローラにより出湯温度制御を行う第２の混合ユニットの混合温水を第２の熱源を介して給湯口へ導くことにより、第１の発明から得られる効果に加えて通水圧損を少なくすることができる。   The second aspect of the invention is particularly the first aspect of the invention, wherein the mixed hot water of the second mixing unit, which is installed in parallel with the first mixing unit and performs the hot water temperature control by the independent hot water storage tank controller, is supplied via the second heat source. In addition to the effect obtained from the first invention, the water pressure loss can be reduced by guiding the hot water supply port.

第３の発明は、特に第１の発明において、第１の混合ユニットと平行に設置され、独立した貯湯タンクコントローラにより出湯温度制御を行う第２の混合ユニットの混合温水を第２の熱源を介さずに給湯口へ導くことにより、第１の発明から得られる効果に加えて通水圧損を少なくすることができる。   In a third aspect of the invention, in particular, in the first aspect of the invention, the mixed hot water of the second mixing unit, which is installed in parallel with the first mixing unit and performs the hot water temperature control by an independent hot water storage tank controller, is passed through the second heat source. In addition to the effect obtained from the first invention, the water pressure loss can be reduced by guiding it to the hot water supply port.

以下本発明の実施の形態について、図面を参照しながら説明する。   Embodiments of the present invention will be described below with reference to the drawings.

（実施の形態１）
図１は、本発明の実施の形態１における貯湯式コジェネレーションシステム（給湯装置）の構成図である。 (Embodiment 1)
FIG. 1 is a configuration diagram of a hot water storage type cogeneration system (hot water supply apparatus) according to Embodiment 1 of the present invention.

基本構成として、主たる熱源であるガス給湯機の第２の熱源Ｂ、貯湯タンク７０の加熱を行う第１の熱源Ａ、貯湯タンク７０に貯えられた湯水と低温湯水を混合するとともに第２の熱源Ｂを介して給湯口９０へ湯水を導く第１混合ユニットＣ、同じく貯湯タンク７０に貯えられた湯水と低温湯水を混合するとともに給湯口９０へ湯水を導く第１混合ユニットＣと並列に取り付けられた第２混合ユニットＤを設けている。   As a basic configuration, the second heat source B of the gas water heater that is the main heat source, the first heat source A that heats the hot water storage tank 70, the hot water stored in the hot water storage tank 70 and the low-temperature hot water and the second heat source are mixed. A first mixing unit C that guides hot water to the hot water supply port 90 through B, and is mounted in parallel with the first mixing unit C that mixes hot water stored in the hot water storage tank 70 with low-temperature hot water and guides hot water to the hot water supply port 90. A second mixing unit D is provided.

第１の熱源Ａ内部の循環ポンプ８２により、第１熱源戻り管路８１ｂを通り、第１熱源熱交換器８１ａにより熱交換された温水は、第１熱源往き管路８１ｃを通って、貯湯タンク７０に戻される。   The hot water that has passed through the first heat source return pipe 81b by the circulation pump 82 in the first heat source A and has been exchanged by the first heat source heat exchanger 81a passes through the first heat source forward pipe 81c, and passes through the hot water storage tank. Return to 70.

ここで、リモコン５０により要求湯温が入力されると、その情報は、第２熱源コントローラ６０を介して第１混合弁ユニットコントローラ２０へ伝えられる。   Here, when the required hot water temperature is input from the remote controller 50, the information is transmitted to the first mixing valve unit controller 20 via the second heat source controller 60.

貯湯タンク７０が第１の熱源Ａにより十分加熱された状態で、給湯口９０が開かれると、低温湯水が、給水口９１から給水路１１ａおよび給水路１１ｂを通って、貯湯タンク７０へ注入される。   When the hot water supply port 90 is opened in a state where the hot water storage tank 70 is sufficiently heated by the first heat source A, low-temperature hot water is injected from the water supply port 91 into the hot water storage tank 70 through the water supply channel 11a and the water supply channel 11b. The

これにより、押し出された貯湯タンク７０の中の温水は、貯湯水路７１ａ、貯湯水路７１ｃを通って、第１混合ユニットＣへ導かれる。給水口９１から流入したもう一方の低温湯水は、給水路１１ａ、給水路１１ｃ、給水路１２ａを通って、第１混合ユニットＣへ導かれる。   Thereby, the hot water in the hot water storage tank 70 pushed out is guided to the first mixing unit C through the hot water storage channel 71a and the hot water storage channel 71c. The other low-temperature hot water flowing in from the water supply port 91 is guided to the first mixing unit C through the water supply channel 11a, the water supply channel 11c, and the water supply channel 12a.

このとき、貯湯タンク７０内の温水が、リモコン５０により要求された設定温度より十分高い場合は、第１混合弁ユニットコントローラ２０が、給水温度センサ２１、貯湯温度センサ２２、温水温度センサ２３の温度情報を基に、第１混合ユニットＣ内の第１混合弁２４の混合比率を設定温度になるように調整する。設定温度に調整された混合温水は、給水路１３を介して第２の熱源Ｂであるガス給湯機に導かれる。   At this time, if the hot water in the hot water storage tank 70 is sufficiently higher than the set temperature requested by the remote controller 50, the first mixing valve unit controller 20 determines the temperatures of the feed water temperature sensor 21, the hot water temperature sensor 22, and the hot water temperature sensor 23. Based on the information, the mixing ratio of the first mixing valve 24 in the first mixing unit C is adjusted to the set temperature. The mixed hot water adjusted to the set temperature is led to the gas water heater as the second heat source B through the water supply passage 13.

つぎに、第２混合ユニットＤには、貯湯水路７１ｂから貯湯タンク７０内の温水が導かれる。また給水口９１から流入したもう一方の低温湯水は、給水路１２ｂから第２混合ユニットＤに導かれる。   Next, the hot water in the hot water storage tank 70 is guided to the second mixing unit D from the hot water storage channel 71b. The other low-temperature hot water flowing in from the water supply port 91 is guided to the second mixing unit D from the water supply channel 12b.

貯湯タンクコントローラ７３は、第１混合ユニットＣの給水路１３に取り付けられた出湯温度センサ４１からの温度情報により、第２混合ユニットＤの混合比率を設定温度になるように調整する。設定温度に調整された混合温水は、第２混合弁水路４２を介して第２の熱源Ｂであるガス給湯機に導かれる。   The hot water storage tank controller 73 adjusts the mixing ratio of the second mixing unit D to the set temperature based on the temperature information from the hot water temperature sensor 41 attached to the water supply path 13 of the first mixing unit C. The mixed hot water adjusted to the set temperature is guided to the gas water heater as the second heat source B through the second mixing valve water passage 42.

第１混合ユニットＣ、第２混合ユニットＤより第２の熱源Ｂに導かれた混合温水は、水量センサ６６、熱交換器６１ａ、出湯水路６１ｃを通って、給湯口９０から排出される。この時、第２熱源コントローラ６０は、貯湯タンク７０内の温水がリモコン５０により要求された設定温度より十分高い場合、第２の熱源Ｂはバーナー６２を燃焼させることなく混合温水を排出する。   The mixed hot water led from the first mixing unit C and the second mixing unit D to the second heat source B is discharged from the hot water supply port 90 through the water amount sensor 66, the heat exchanger 61a, and the tapping water channel 61c. At this time, when the hot water in the hot water storage tank 70 is sufficiently higher than the set temperature requested by the remote controller 50, the second heat source controller 60 discharges the mixed hot water without burning the burner 62.

つぎに、貯湯タンク７０内の温水が、リモコン５０により要求された設定温度より低く、そのままでは要求温度にならない場合について説明する。   Next, the case where the hot water in the hot water storage tank 70 is lower than the set temperature requested by the remote controller 50 and does not reach the required temperature as it is will be described.

このとき、第１混合弁ユニットコントローラ２０は、第１混合弁２４を低温湯水側が全開になるよう制御する。給湯口９０が開かれると、低温湯水が、給水口９１から給水路１１ａおよび給水路１１ｂを通って、貯湯タンク７０へ注入されるが、第１混合弁２４を高温側全閉、低温湯水側が全開になるよう制御しているので、貯湯タンク７０内の貯水は貯湯タンク７０内部に留まる。   At this time, the first mixing valve unit controller 20 controls the first mixing valve 24 so that the low temperature hot water side is fully opened. When the hot water supply port 90 is opened, low temperature hot water is injected from the water supply port 91 through the water supply channel 11a and the water supply channel 11b into the hot water storage tank 70. However, the first mixing valve 24 is fully closed on the high temperature side, Since it is controlled to be fully opened, the water stored in the hot water storage tank 70 remains inside the hot water storage tank 70.

給水口９１から流入したもう一方の低温湯水は、給水路１１ａ、給水路１１ｃ、給水路１２ａを通って、第１混合ユニットＣへ導かれる。更に、低温湯水は、給水路１３を介して第２の熱源Ｂであるガス給湯機に導かれる。   The other low-temperature hot water flowing in from the water supply port 91 is guided to the first mixing unit C through the water supply channel 11a, the water supply channel 11c, and the water supply channel 12a. Further, the low-temperature hot water is led to the gas water heater as the second heat source B through the water supply channel 13.

つぎに、第２混合ユニットＤは、貯湯水量センサ４０の流量検出がない場合、貯湯タンク７０内の温水が、リモコン５０により要求された設定温度より低いと判断し、第１混合弁２４と同じく、貯湯タンクコントローラ７３により混合弁を高温側全閉、低温湯水側が全開になるよう制御する。貯湯タンク７０の中の温水は、混合弁の温水側が全閉であるため、貯湯水路７１ｂから第２混合ユニットＤに導かれることはない。   Next, when the flow rate of the hot water storage amount sensor 40 is not detected, the second mixing unit D determines that the hot water in the hot water storage tank 70 is lower than the set temperature requested by the remote controller 50, and is the same as the first mixing valve 24. The hot water storage tank controller 73 controls the mixing valve so that the high temperature side is fully closed and the low temperature hot water side is fully open. The hot water in the hot water storage tank 70 is not led to the second mixing unit D from the hot water storage channel 71b because the hot water side of the mixing valve is fully closed.

一方、給水口９１から流入したもう一方の低温湯水は、給水路１２ｂから第２混合ユニットＤに導かれる。更に、低温湯水は、第２混合弁水路４２を介して、第２の熱源Ｂであるガス給湯機に導かれる。   On the other hand, the other low temperature hot water flowing in from the water supply port 91 is guided to the second mixing unit D from the water supply path 12b. Furthermore, the low-temperature hot water is led to the gas water heater as the second heat source B through the second mixing valve water passage 42.

第１混合ユニットＣ、給水路１３へと導かれた低温湯水と、第２混合ユニットＤ、第２混合弁水路４２へと導かれた低温湯水は、混合水路６１ｂを通って第２の熱源Ｂに入り、水量センサ６６を回転させる。   The low-temperature hot water led to the first mixing unit C and the water supply channel 13 and the low-temperature hot water led to the second mixing unit D and the second mixing valve water channel 42 pass through the mixing water channel 61b to the second heat source B. And the water amount sensor 66 is rotated.

水量センサ６６が点火水量を検知すると、燃焼ファン６３が回転し、バーナー６２が燃焼する。第２熱源コントローラ６０は、入水温度センサ６４、出湯温度センサ６５により、このバーナー６２の燃焼を制御し、熱交換器６１ａ内を流れる低温湯水が設定の温度に加熱される。   When the water amount sensor 66 detects the ignition water amount, the combustion fan 63 rotates and the burner 62 burns. The second heat source controller 60 controls the combustion of the burner 62 by the incoming water temperature sensor 64 and the outgoing hot water temperature sensor 65, and the low temperature hot water flowing in the heat exchanger 61a is heated to a set temperature.

ここで、貯湯タンク７０が、第１の熱源Ａにより十分加熱された状態であって、第２の熱源Ｂが燃焼することなしに湯温制御を行っていた場合に、第２の熱源Ｂの第２熱源コントローラ６０、または第１混合ユニットＣの第１混合弁ユニットコントローラ２０が故障して、リモコン５０の設定温度より高い出湯があった場合を考える。   Here, when the hot water storage tank 70 is sufficiently heated by the first heat source A and the hot water temperature control is performed without the second heat source B burning, the second heat source B Consider a case where the second heat source controller 60 or the first mixing valve unit controller 20 of the first mixing unit C fails and there is hot water higher than the set temperature of the remote controller 50.

このとき、第２混合ユニットＤは、当初は出湯温度センサ４１で検知した温度を基準に混合比率を制御して温度コントロールを行っている。この時に、第２熱源コントローラ６０または第１混合弁ユニットコントローラ２０の故障が発生すると、第１混合ユニットＣから排出される温水温度が急上昇し、貯湯タンクコントローラ７３が、独立してコントロールする出湯温度センサ４１で設定温度よりも高温を検知する。   At this time, the second mixing unit D performs temperature control by controlling the mixing ratio based on the temperature initially detected by the tapping temperature sensor 41. At this time, if a failure of the second heat source controller 60 or the first mixing valve unit controller 20 occurs, the temperature of the hot water discharged from the first mixing unit C rises rapidly, and the hot water temperature controlled by the hot water storage tank controller 73 independently. The sensor 41 detects a temperature higher than the set temperature.

この高温検知により、貯湯タンクコントローラ７３は、異常を検出し、第２混合ユニットＤの混合弁を、高温側全閉、低温湯水側が全開になるよう制御する。   By this high temperature detection, the hot water storage tank controller 73 detects an abnormality and controls the mixing valve of the second mixing unit D so that the high temperature side is fully closed and the low temperature hot water side is fully open.

これにより、第２混合ユニットＤから排出される混合水の温度が低下し、第１混合ユニットＣから排出される高温水と混合水路６１ｂで交じり合い、安全な温度まで低下する。   Thereby, the temperature of the mixed water discharged | emitted from the 2nd mixing unit D falls, it mixes with the high temperature water discharged | emitted from the 1st mixing unit C by the mixed water channel 61b, and falls to safe temperature.

（実施の形態２）
次に、図１により、第２の混合ユニットを併設することによりシステム全体の通水圧損を少なくする効果について説明する。 (Embodiment 2)
Next, referring to FIG. 1, the effect of reducing the water pressure loss of the entire system by providing the second mixing unit will be described.

リモコン５０により要求湯温が入力され、貯湯タンク７０内の温水がリモコン５０による要求湯温より十分高い状態で給湯口９０が開かれると、第一の流れとして貯湯タンク７０からの温水は、貯湯水路７１ａ、貯湯水路７１ｃを通って第１混合ユニットＣに供給される。   When the required hot water temperature is input by the remote controller 50 and the hot water supply port 90 is opened in a state where the hot water in the hot water storage tank 70 is sufficiently higher than the required hot water temperature by the remote controller 50, the hot water from the hot water storage tank 70 is stored in the hot water as a first flow. The first mixing unit C is supplied through the water channel 71a and the hot water storage channel 71c.

貯湯タンク７０からの温水は、第１混合ユニットＣ内で給水路１２ａから供給された低温温水と混合され、リモコン５０で要求された湯温の温水で、給水路１３、混合水路６１ｂを通り、第２の熱源Ｂを通り、出湯水路６１ｃを経て、給湯口９０から排出される。   The hot water from the hot water storage tank 70 is mixed with the low temperature hot water supplied from the water supply passage 12a in the first mixing unit C, and passes through the water supply passage 13 and the mixing water passage 61b with the hot water having the hot water temperature requested by the remote controller 50. It passes through the second heat source B, is discharged from the hot water supply port 90 through the hot water outlet 61c.

一方、第二の流れとして貯湯タンク７０からの温水は、貯湯水路７１ａ、貯湯水路７１ｂを通って、第２混合ユニットＤに供給される。   On the other hand, the hot water from the hot water storage tank 70 as the second flow is supplied to the second mixing unit D through the hot water storage channel 71a and the hot water storage channel 71b.

貯湯タンク７０からの温水は、第２混合ユニットＤ内で給水路１２ｂから供給された低温温水と混合され、第２の熱源Ｂの給水路１３に取り付けられた出湯温度センサ４１からの温度情報により、第２混合ユニットＤの混合比率を設定温度になるように調整する。そして、第２混合弁水路４２、混合水路６１ｂを通り、第２の熱源Ｂを通り、出湯水路６１ｃを経て、給湯口９０から排出される。   The hot water from the hot water storage tank 70 is mixed with the low-temperature hot water supplied from the water supply path 12b in the second mixing unit D, and the temperature information from the hot water temperature sensor 41 attached to the water supply path 13 of the second heat source B is used. The mixing ratio of the second mixing unit D is adjusted so as to reach the set temperature. Then, it passes through the second mixing valve water channel 42 and the mixing water channel 61b, passes through the second heat source B, passes through the hot water supply channel 61c, and is discharged from the hot water supply port 90.

次に、リモコン５０により要求湯温が入力され、貯湯タンク７０内の温水がリモコン５０による要求湯温より低い状態で、給湯口９０が開かれると、第一の流れとして貯湯タンク７０からの温水は、貯湯水路７１ａ、貯湯水路７１ｃを通って、第１混合ユニットＣに供給される。この時第１混合弁２４は、高温側全閉、低温湯水側が全開になるよう制御しているので、貯湯タンク７０内の貯水は貯湯タンク７０内部に留まる。   Next, when the required hot water temperature is input by the remote controller 50 and the hot water supply port 90 is opened in a state where the hot water in the hot water storage tank 70 is lower than the required hot water temperature by the remote controller 50, the hot water from the hot water storage tank 70 is the first flow. Is supplied to the first mixing unit C through the hot water storage channel 71a and the hot water storage channel 71c. At this time, since the first mixing valve 24 is controlled so that the high temperature side is fully closed and the low temperature hot water side is fully open, the water stored in the hot water storage tank 70 remains inside the hot water storage tank 70.

給水口９１から流入したもう一方の低温湯水は、給水路１１ａ、給水路１１ｃ、給水路１２ａを通って、第１混合ユニットＣへ導かれる。更に、低温湯水は、給水路１３を介して、第２の熱源Ｂであるガス給湯機に導かれる。   The other low-temperature hot water flowing in from the water supply port 91 is guided to the first mixing unit C through the water supply channel 11a, the water supply channel 11c, and the water supply channel 12a. Further, the low-temperature hot water is led to the gas water heater as the second heat source B through the water supply path 13.

一方、第二の流れとして貯湯タンク７０からの温水は、貯湯水路７１ａ、貯湯水路７１ｂを通って、第２混合ユニットＤに供給される。   On the other hand, the hot water from the hot water storage tank 70 as the second flow is supplied to the second mixing unit D through the hot water storage channel 71a and the hot water storage channel 71b.

第２混合ユニットＤは、貯湯水量センサ４０の流量検出がない場合、貯湯タンク７０内の温水がリモコン５０により要求された設定温度より低いと判断し、第１混合弁２４と同じく、貯湯タンクコントローラ７３により、混合弁を高温側全閉、低温湯水側が全開になるよう制御する。貯湯タンク７０の中の温水は、混合弁の温水側が全閉であるため、貯湯水路７１ｂから第２混合ユニットＤに導かれることはない。   When the flow rate of the hot water storage sensor 40 is not detected, the second mixing unit D determines that the hot water in the hot water storage tank 70 is lower than the set temperature requested by the remote controller 50, and like the first mixing valve 24, the hot water storage tank controller 73, the mixing valve is controlled to be fully closed on the high temperature side and fully open on the low temperature hot water side. The hot water in the hot water storage tank 70 is not led to the second mixing unit D from the hot water storage channel 71b because the hot water side of the mixing valve is fully closed.

一方、給水口９１から流入したもう一方の低温湯水は、給水路１２ｂから第２混合ユニットＤに導かれる。更に、低温湯水は、第２混合弁水路４２を介して第２の熱源Ｂであるガス給湯機に導かれる。第１混合ユニットＣ、第２混合ユニットＤから供給された低温温水により、第２の熱源Ｂであるガス給湯機が運転し、リモコン５０により要求された湯温に燃焼制御されて、出湯水路６１ｃを経て給湯口９０から排出される。   On the other hand, the other low temperature hot water flowing in from the water supply port 91 is guided to the second mixing unit D from the water supply path 12b. Further, the low-temperature hot water is led to the gas water heater as the second heat source B through the second mixing valve water passage 42. The gas water heater as the second heat source B is operated by the low temperature hot water supplied from the first mixing unit C and the second mixing unit D, and the combustion is controlled to the hot water temperature requested by the remote controller 50, and the hot water channel 61c. And then discharged from the hot water supply port 90.

このように、第２混合ユニットＤの混合温水を、第２の熱源Ｂを介して給湯口へ導くことにより、貯湯タンク７０から第２の熱源Ｂへ向かう湯水の経路が２つ（給水路１３、第２混合弁水路４２）となるため、システム全体の通水圧損を少なくすることができる。   In this way, the hot water mixed in the second mixing unit D is guided to the hot water supply port via the second heat source B, whereby two hot water paths from the hot water storage tank 70 to the second heat source B (water supply channel 13). Since the second mixing valve water channel 42), the water pressure loss of the entire system can be reduced.

（実施の形態３）
次に、併設した第２の混合ユニットを使用し、第２の熱源を介さずに給湯口へ導くことにより、通水圧損を少なくする効果について説明する。 (Embodiment 3)
Next, the effect of reducing the water passage pressure loss by using the second mixing unit provided and guiding it to the hot water supply port without going through the second heat source will be described.

図２は、本発明の実施の形態３における貯湯式コジェネレーションシステムである給湯装置の構成図である。   FIG. 2 is a configuration diagram of a hot water supply apparatus that is a hot water storage cogeneration system according to Embodiment 3 of the present invention.

基本構成として実施の形態１と同じく、主たる熱源であるガス給湯機の第２の熱源Ｂ、貯湯タンク７０の加熱を行う第１の熱源Ａ、貯湯タンク７０に貯えられた湯水と低温湯水を混合するとともに第２の熱源Ｂを介して給湯口９０へ湯水を導く第１混合ユニットＣ、同じく貯湯タンク７０に貯えられた湯水と低温湯水を混合するとともに給湯口９０へ湯水を導く第１混合ユニットＣと並列に取り付けられた第２混合ユニットＤを設けている。   As in Embodiment 1, the basic heat source is the second heat source B of the gas water heater that is the main heat source, the first heat source A that heats the hot water tank 70, and hot water stored in the hot water tank 70 and low-temperature hot water. And a first mixing unit C that guides hot water to the hot water supply port 90 via the second heat source B, and a first mixing unit that mixes hot water stored in the hot water storage tank 70 with low-temperature hot water and guides the hot water to the hot water supply port 90. A second mixing unit D mounted in parallel with C is provided.

リモコン５０により要求湯温が入力され、貯湯タンク７０内の温水がリモコン５０による要求湯温より十分高い状態で給湯口９０が開かれると、第一の流れとして貯湯タンク７０からの温水は、貯湯水路７１ａ、貯湯水路７１ｃを通って第１混合ユニットＣに供給される。   When the required hot water temperature is input by the remote controller 50 and the hot water supply port 90 is opened in a state where the hot water in the hot water storage tank 70 is sufficiently higher than the required hot water temperature by the remote controller 50, the hot water from the hot water storage tank 70 is stored in the hot water as a first flow. The first mixing unit C is supplied through the water channel 71a and the hot water storage channel 71c.

貯湯タンク７０からの温水は、第１混合ユニットＣ内で給水路１２ａから供給された低温温水と混合され、リモコン５０で要求された湯温の温水で給水路１３、混合水路６１ｂを通り、第２の熱源Ｂを通り、給湯口９０から排出される。   The hot water from the hot water storage tank 70 is mixed with the low temperature hot water supplied from the water supply path 12a in the first mixing unit C, passes through the water supply path 13 and the mixing water path 61b with the hot water having the hot water temperature requested by the remote controller 50, 2 passes through the heat source B and is discharged from the hot water supply port 90.

一方、第二の流れとして貯湯タンク７０からの温水は、貯湯水路７１ａ、貯湯水路７１ｂを通って、第２混合ユニットＤに供給される。   On the other hand, the hot water from the hot water storage tank 70 as the second flow is supplied to the second mixing unit D through the hot water storage channel 71a and the hot water storage channel 71b.

貯湯タンク７０からの温水は、第２混合ユニットＤ内で給水路１２ｂから供給された低温温水と混合され、第２の熱源Ｂの給水路１３に取り付けられた出湯温度センサ４１からの温度情報により、第２混合ユニットＤの混合比率を設定温度になるように調整する。そして、第２混合弁水路４２を通り、切り替え弁４３により第２の熱源Ｂを介さず出湯水路６１ｃを経て、給湯口９０から排出される。   The hot water from the hot water storage tank 70 is mixed with the low-temperature hot water supplied from the water supply path 12b in the second mixing unit D, and the temperature information from the hot water temperature sensor 41 attached to the water supply path 13 of the second heat source B is used. The mixing ratio of the second mixing unit D is adjusted so as to reach the set temperature. Then, the water passes through the second mixing valve water passage 42, and is discharged from the hot water supply port 90 through the hot water supply passage 61 c by the switching valve 43 without passing through the second heat source B.

つぎに、リモコン５０により要求湯温が入力され、貯湯タンク７０内の温水が、リモコン５０による要求湯温より低い状態で給湯口９０が開かれると、第一の流れとして貯湯タンク７０からの温水は、貯湯水路７１ａ、貯湯水路７１ｃを通って、第１混合ユニットＣに供給される。   Next, when the required hot water temperature is input by the remote controller 50 and the hot water supply port 90 is opened in a state where the hot water in the hot water storage tank 70 is lower than the required hot water temperature by the remote controller 50, the hot water from the hot water storage tank 70 is the first flow. Is supplied to the first mixing unit C through the hot water storage channel 71a and the hot water storage channel 71c.

この時、第１混合弁２４は、高温側全閉、低温湯水側が全開になるよう制御しているので、貯湯タンク７０内の貯水は貯湯タンク７０内部に留まる。   At this time, the first mixing valve 24 is controlled so that the high temperature side is fully closed and the low temperature hot water side is fully open, so that the water stored in the hot water storage tank 70 remains inside the hot water storage tank 70.

給水口９１から流入したもう一方の低温湯水は、給水路１１ａ、給水路１１ｃ、給水路１２ａを通って、第１混合ユニットＣへ導かれる。更に、低温湯水は給水路１３を介して第２の熱源Ｂであるガス給湯機に導かれる。   The other low-temperature hot water flowing in from the water supply port 91 is guided to the first mixing unit C through the water supply channel 11a, the water supply channel 11c, and the water supply channel 12a. Further, the low-temperature hot water is led to the gas water heater as the second heat source B through the water supply path 13.

一方、第二の流れとして貯湯タンク７０からの温水は、貯湯水路７１ａ、貯湯水路７１ｂを通って、第２混合ユニットＤに供給される。   On the other hand, the hot water from the hot water storage tank 70 as the second flow is supplied to the second mixing unit D through the hot water storage channel 71a and the hot water storage channel 71b.

第２混合ユニットＤは、貯湯水量センサ４０の流量検出がない場合、貯湯タンク７０内の温水がリモコン５０により要求された設定温度より低いと判断し、第１混合弁２４と同じく、貯湯タンクコントローラ７３により、混合弁を高温側全閉、低温湯水側が全開になるよう制御する。貯湯タンク７０の中の温水は、混合弁の温水側が全閉であるため、貯湯水路７１ｂから第２混合ユニットＤに導かれることはない。   When the flow rate of the hot water storage sensor 40 is not detected, the second mixing unit D determines that the hot water in the hot water storage tank 70 is lower than the set temperature requested by the remote controller 50, and like the first mixing valve 24, the hot water storage tank controller 73, the mixing valve is controlled to be fully closed on the high temperature side and fully open on the low temperature hot water side. The hot water in the hot water storage tank 70 is not led to the second mixing unit D from the hot water storage channel 71b because the hot water side of the mixing valve is fully closed.

一方、給水口９１から流入したもう一方の低温湯水は、給水路１２ｂから第２混合ユニットＤに導かれる。更に、低温湯水は、第２混合弁水路４２、切り替え弁４３により混合水路６１ｂを通って、第２の熱源Ｂであるガス給湯機に導かれる。   On the other hand, the other low temperature hot water flowing in from the water supply port 91 is guided to the second mixing unit D from the water supply path 12b. Further, the low-temperature hot water passes through the mixed water channel 61 b by the second mixing valve water channel 42 and the switching valve 43 and is led to the gas water heater as the second heat source B.

第１混合ユニットＣ、第２混合ユニットＤから供給された低温温水により、第２の熱源Ｂであるガス給湯機が運転し、リモコン５０により要求された湯温に燃焼制御されて、給湯口９０から排出される。   The gas water heater as the second heat source B is operated by the low temperature hot water supplied from the first mixing unit C and the second mixing unit D, and the combustion is controlled to the hot water temperature requested by the remote controller 50. Discharged from.

このように、第２混合ユニットＤの混合温水を、第２の熱源Ｂを介することなく、給湯口へ導くことにより、貯湯タンク７０から給湯口へ向かう湯水の経路が２つ（給水路１３、切り替え弁４３から給湯口９０に直結する給水路）となるため、システム全体の通水圧損を少なくすることができる。特に、一方の経路を第２の熱源Ｂを介することなく給湯口へ導くことにより、システム全体の通水圧損を図１に示す実施の形態２以上に少なくすることができる。   In this way, by introducing the mixed hot water of the second mixing unit D to the hot water supply port without passing through the second heat source B, there are two hot water paths from the hot water storage tank 70 to the hot water supply port (water supply channel 13, Therefore, the water pressure loss in the entire system can be reduced. In particular, by guiding one of the paths to the hot water supply port without passing through the second heat source B, the water pressure loss of the entire system can be reduced more than in the second embodiment shown in FIG.

本発明は、主たる給湯機の制御部が故障しても不用意な高温出湯のない、極めて安全性が高く、圧力損失の少ない給湯装置を提供するものであり、家庭用、業務用広範囲に利用することが可能である。   The present invention provides a hot water supply device that is extremely safe and has little pressure loss, without any inadvertent high-temperature hot water supply even if the main water heater control unit breaks down. Is possible.

本発明の実施の形態１、実施の形態２における給湯装置の構成図Configuration diagram of hot water supply apparatus according to Embodiment 1 and Embodiment 2 of the present invention 本発明の実施の形態３における給湯装置の構成図The block diagram of the hot-water supply apparatus in Embodiment 3 of this invention 従来の給湯装置の構成図Configuration diagram of conventional hot water supply equipment

符号の説明Explanation of symbols

Ａ 第１の熱源
Ｂ 第２の熱源
Ｃ 第１混合ユニット
Ｄ 第２混合ユニット
７０ 貯湯タンク
９０ 給湯口 A 1st heat source B 2nd heat source C 1st mixing unit D 2nd mixing unit 70 Hot water storage tank 90 Hot water inlet

Claims (4)

湯水の加熱を行う第１の熱源および第２の熱源と、
前記第１の熱源により加熱された湯水を貯える貯湯タンクと、
前記貯湯タンクに貯えられた湯水と低温湯水を混合するとともに前記第２の熱源を介して利用給湯口へ湯水を導く第１の混合ユニットと、
前記貯湯タンクに貯えられた湯水と低温湯水を混合するとともに前記利用給湯口へ湯水を導く第２の混合ユニットと、
前記貯湯タンクに貯えられた湯水と低温湯水との混合湯水の温度を検知する温水温度センサに基づいて前記貯湯タンクに貯えられた湯水と前記低温湯水との混合割合を前記第１の混合ユニットにおいて制御する第１混合弁ユニットコントローラと、
前記利用給湯口に供給される湯水の温度を検知する出湯温度センサに基づいて前記貯湯タンクに貯えられた湯水と低温湯水の混合割合を前記第２の混合ユニットにおいて制御する貯湯タンクコントローラと、
を備え、
前記第１混合弁ユニットコントローラもしくは前記第２の熱源を制御する第２熱源コントローラが故障したことにより前記出湯温度センサが設定温度よりも高温を検知した場合は、前記貯湯タンクコントローラが出湯温度を低下させるように前記第２の混合ユニットを制御する、
給湯装置。 A first heat source and a second heat source for heating hot water;
A hot water storage tank for storing hot water heated by the first heat source;
A first mixing unit that mixes the hot water stored in the hot water storage tank and the low-temperature hot water and guides the hot water to the hot water supply port through the second heat source;
A second mixing unit that mixes hot water stored in the hot water storage tank and low-temperature hot water and guides hot water to the hot water supply port ;
Mixing hot water of the hot water temperature sensor on the mixing ratio between the low-temperature hot water and hot water that is stored in the hot water storage tank based first mixing unit for detecting the temperature of the hot water and the cold hot water that is stored before Symbol hot water storage tank A first mixing valve unit controller to be controlled in
A hot water storage tank controller for controlling the hot water and cold hot and cold water mixing ratio of which is stored in the hot water storage tank based on the hot water temperature sensor for detecting the hot water temperature supplied before Symbol use hot water outlet in the second mixing unit,
With
If the hot water temperature sensor detects a temperature higher than a set temperature due to a failure of the first mixing valve unit controller or the second heat source controller that controls the second heat source, the hot water storage tank controller lowers the hot water temperature. Controlling the second mixing unit to
Hot water supply device. 前記第２の混合ユニットで混合した湯水を前記第２の熱源を介して前記利用給湯口へ導く請求項１記載の給湯装置。 The hot water supply apparatus according to claim 1, wherein hot water mixed in the second mixing unit is guided to the use hot water supply port via the second heat source. 前記第２の混合ユニットで混合した湯水を前記第２の熱源を介することなく前記利用給湯口へ導く請求項１記載の給湯装置。 The hot water supply apparatus according to claim 1, wherein hot water mixed in the second mixing unit is led to the use hot water supply port without passing through the second heat source. 前記貯湯タンクコントローラは、前記第１の混合ユニットとは独立して前記第２の混合ユニットを制御しており、  The hot water storage tank controller controls the second mixing unit independently of the first mixing unit;
前記第１混合弁ユニットコントローラもしくは前記第２の熱源を制御する第２熱源コンA second heat source controller for controlling the first mixing valve unit controller or the second heat source;
トローラが故障したことにより前記出湯温度センサが設定温度よりも高温を検知した場合は、前記貯湯タンクコントローラが、前記第２混合ユニットの混合弁を高温側全閉および低温湯水側全開になるように制御する、When the tapping temperature sensor detects a temperature higher than a set temperature due to a failure of the trawler, the hot water storage tank controller causes the mixing valve of the second mixing unit to be fully closed on the high temperature side and fully open on the low temperature hot water side. Control,
請求項１〜３のいずれか１項に記載の給湯装置。The hot-water supply apparatus of any one of Claims 1-3.
JP2008227929A 2008-09-05 2008-09-05 Water heater Expired - Fee Related JP5176795B2 (en)

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