JP4379262B2 - Hot water supply device - Google Patents

Hot water supply device Download PDF

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JP4379262B2
JP4379262B2 JP2004253878A JP2004253878A JP4379262B2 JP 4379262 B2 JP4379262 B2 JP 4379262B2 JP 2004253878 A JP2004253878 A JP 2004253878A JP 2004253878 A JP2004253878 A JP 2004253878A JP 4379262 B2 JP4379262 B2 JP 4379262B2
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hot water
temperature
mixing valve
flow rate
water heater
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JP2006071161A (en
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昌彦 山本
伸二 宮内
秀夫 加田
精 米田
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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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、燃料電池排熱による湯を貯える貯湯槽とその貯湯槽に貯えられた貯湯水温度が低い場合、そのバックアップとして給湯器にて追焚きして給湯する装置に関するものである。   The present invention relates to a hot water storage tank for storing hot water generated by exhaust heat from a fuel cell and an apparatus for replenishing hot water as a backup when the temperature of the hot water stored in the hot water storage tank is low.

従来、この種の給湯としての温水供給装置は、図６のような構成をしていた。すなわち、貯湯槽１の出湯温度制御は給湯器７に供給する流量に関係なくバックアップする給湯器７のリモコン設定温度となるよう混合弁３により、湯水を混合して貯湯槽出湯温度を制御していた。   Conventionally, a hot water supply apparatus as this type of hot water supply has a configuration as shown in FIG. That is, the hot water temperature of the hot water storage tank 1 is controlled by mixing the hot water with the mixing valve 3 so that the hot water temperature of the hot water heater 7 is set to the remote control set temperature regardless of the flow rate supplied to the hot water heater 7. It was.

しかし、かかる先行技術は、文献公知発明に係るものでないため、記載すべき先行技術文献情報はない。   However, since this prior art does not relate to a known literature invention, there is no prior art document information to be described.

しかしながら上記従来例においては、混合弁出湯温度すなわち給湯器７の入水温度が給湯器リモコン９の設定温度に近くかつ小流量の場合で給湯器が使用された場合、給湯器７の燃焼を最小に絞っても給湯器出湯温度は給湯器リモコン９の設定温度を超えた温度となってしまうという課題があった。あるいは設定温度以上になることを避けるため、混合弁３の出湯温度を流量に関係なく一律、リモコン設定温度より一定温度下げていた。しかしこの場合、給湯器７の出湯制御によりリモコン設定温度の湯が出るが、そのため貯湯槽１にはリモコン設定温度以上の温度のお湯が貯まっているにもかかわらず、さらに水を混ぜて温度を下げて給湯器７に供給することになる。そのことはすなわち、給湯器で追焚きするための余計なエネルギーが必要となる。   However, in the above conventional example, when the hot water heater is used in the case where the mixing valve hot water temperature, that is, the incoming water temperature of the hot water heater 7 is close to the set temperature of the hot water heater remote control 9 and has a small flow rate, the combustion of the hot water heater 7 is minimized. There is a problem that even if the water is squeezed, the hot water outlet temperature exceeds the set temperature of the hot water remote controller 9. Alternatively, in order to avoid exceeding the set temperature, the tapping temperature of the mixing valve 3 is uniformly lowered from the remote control set temperature regardless of the flow rate. However, in this case, hot water at the remote control set temperature comes out by the hot water control of the hot water heater 7, so even though hot water having a temperature higher than the remote control set temperature is stored in the hot water tank 1, the temperature is further mixed with water. It is lowered and supplied to the water heater 7. In other words, extra energy is required for chasing with the water heater.

そこで本発明は、上述したこのような従来の温水供給装置が有する課題を考慮して、混合弁出湯温度制御部は貯湯槽出口温度検出手段により検出した温度が給湯器リモコン設定温度より所定温度より低い場合、給湯器リモコン設定温度に対し、混合弁出湯流量検出手段により検出した流量値に対応したオフセット値にて混合弁出湯温度制御することにより、どのような給湯器リモコン設定温度、どのような給湯器入水流量でも、給湯器出湯温度がリモコン設定温度を超えないようにするとともに、給湯器が最小エネルギーにて追焚きを行うための最適なオフセット値（＝リモコン設定温度―混合弁出口温度）を選定できる温水供給装置を提供することを目的とするものである。   Therefore, the present invention takes into consideration the problems of the conventional hot water supply apparatus as described above, and the temperature detected by the mixing valve hot water temperature control unit by the hot water tank outlet temperature detecting means is higher than the predetermined temperature from the set temperature of the hot water heater remote control. If the temperature is low, by controlling the mixing valve hot water temperature with an offset value corresponding to the flow rate value detected by the mixing valve hot water flow rate detection means with respect to the hot water heater remote control temperature setting, Optimum offset value (= remote control set temperature-mixing valve outlet temperature) to prevent the hot water supply hot water discharge temperature from exceeding the remote control set temperature even at the hot water supply flow rate, and for the hot water heater to recharge with minimum energy It aims at providing the warm water supply device which can select.

前記従来の課題を解決するため本発明は、貯湯槽出口温度検出手段により検出した温度が給湯器リモコン設定温度より所定温度より低い場合、混合弁出湯温度制御部は、前記混合弁出湯温度検出手段により検出する前記混合弁の出湯温度が、前記給湯器リモコン設定温度から、前記混合弁出湯流量検出手段により検出した流量値に対応したオフセット値を引いた温度になるように混合弁出湯温度制御するものであり、前記混合弁出湯温度制御部には最小流量値における給湯器リモコン設定温度オフセット値を設定する最小流量時オフセット値設定手段と、最大流量値における前記給湯器リモコン設定温度オフセット値を設定する最大流量時オフセット値設定手段のうち、少なくともどちらか一方を有するものである。このように給湯器入水流量（＝混合弁出湯流量）に応じて給湯器入水温度（＝混合弁出湯温度）を低くすることでどの様な流量でも給湯器出湯温度がリモコン設定温度を超えないようにするとともに、貯湯槽に貯まったお湯を必要以上に下げること無く、給湯器が必要最小限のエネルギーにて追焚きを行うことで効率的な燃料電池排熱によるお湯の利用が可能となる。また、最小流量値における前記給湯器リモコン設定温度オフセット値または最大流量値における前記給湯器リモコン設定温度オフセット値の少なくともどちらか一方が設定出来ることとなり、給湯器の能力に応じて、より最適なオフセット値が選べ、より給湯器出湯温度がリモコン設定温度を超えにくくするとともに、より給湯器が最小エネルギーにて追焚きを行うことが可能となる。 In order to solve the above-described conventional problems, the present invention provides a mixing valve hot water temperature control unit , wherein the temperature detected by the hot water tank outlet temperature detecting means is lower than a predetermined temperature than the hot water heater remote control set temperature, the mixing valve hot water temperature detecting means The mixing valve tapping temperature is controlled so that the tapping temperature detected by the mixing valve is a temperature obtained by subtracting the offset value corresponding to the flow rate detected by the mixing valve tapping flow rate detecting means from the hot water heater remote control set temperature. In the mixing valve hot water temperature control unit, a minimum flow rate offset value setting means for setting a hot water heater remote control set temperature offset value at the minimum flow rate value, and the hot water heater remote control set temperature offset value at the maximum flow rate value are set. And at least one of the maximum flow rate offset value setting means . Thus, by lowering the hot water supply water temperature (= mixing valve hot water temperature) according to the hot water supply water flow rate (= mixing valve hot water flow rate), the hot water supply hot water temperature does not exceed the remote control set temperature at any flow rate. In addition, it is possible to efficiently use hot water by exhausting heat from the fuel cell, since the hot water heater is replenished with a minimum amount of energy without lowering the hot water stored in the hot water storage tank more than necessary. In addition, at least one of the water heater remote control set temperature offset value at the minimum flow rate value and the water heater remote control set temperature offset value at the maximum flow value can be set, and a more optimal offset depending on the capacity of the water heater A value can be selected to make it more difficult for the hot water supply hot water temperature to exceed the remote control set temperature, and the hot water supply can be recharged with minimum energy.

本発明の温水供給装置は燃料電池貯湯槽に貯えられたお湯を必要以上に下げず、かつバックアップ給湯器にてリモコン設定温度を超える温度にならないようにするとともに必要最小限のエネルギーにて給湯器追焚きし、リモコン設定温度のお湯となすものである。また、最小流量値における給湯器リモコン設定温度オフセット値または最大流量値における給湯器リモコン設定温度オフセット値の少なくともどちらか一方が設定出来ることとなり、給湯器の能力に応じて、より最適なオフセット値が選べ、より給湯器出湯温度がリモコン設定温度を超えにくくするとともに、より給湯器が最小エネルギーにて追焚きを行うことが可能となる。 The hot water supply device of the present invention does not lower the hot water stored in the fuel cell hot water tank more than necessary, and does not reach a temperature exceeding the remote control set temperature in the backup water heater, and uses the minimum required energy. It is a memorial service for hot water with a remote control temperature setting. In addition, at least one of the water heater remote controller set temperature offset value at the minimum flow value and the water heater remote controller set temperature offset value at the maximum flow value can be set, and a more optimal offset value can be set according to the capacity of the water heater. As a result, the hot water supply temperature can be made less likely to exceed the remote controller set temperature, and the hot water supply can be reheated with minimum energy.

第１の発明は、燃料電池排熱による湯を貯える貯湯槽と、前記貯湯槽出口の温度を検出する貯湯槽出口温度検出手段と、前記貯湯槽からのお湯と水を混合する混合弁と、前記混合弁にて混合された出湯温度を検出する混合弁出湯温度検出手段と、前記混合弁出湯流量を検出する流量検出手段と、前記混合弁の出湯温度を制御する混合弁出湯温度制御部と、前記混合弁出湯温度制御部により所定の温度にされたお湯の供給を受ける給湯器と、前記混合弁の出湯口と前記給湯器入水口を接続する給湯器入水配管と、前記給湯器を制御する給湯器制御部と、前記給湯器の出湯温度を設定する給湯器リモコンと備え、前記混合弁出湯温度制御部は前記貯湯槽出口温度検出手段により検出した温度が前記給湯器リモコン設定温度より所定温度より低い場合、前記混合弁出湯温度検出手段により検出する前記混合弁の出湯温度が、前記給湯器リモコン設定温度から、前記混合弁出湯流量検出手段により検出した流量値に対応したオフセット値を引いた温度になるように混合弁出湯温度制御するものであり、前記混合弁出湯温度制御部には最小流量値における給湯器リモコン設定温度オフセット値を設定する最小流量時オフセット値設定手段と、最大流量値における前記給湯器リモコン設定温度オフセット値を設定する最大流量時オフセット値設定手段のうち、少なくともどちらか一方を有するので、どのような給湯器リモコン設定温度、どのような給湯器入水流量でも、給湯器出湯温度がリモコン設定温度を超えないようにするとともに、給湯器が最小エネルギーにて追焚きを行うための最適なオフセット値を選定するものとなる。また、最小流量値における給湯器リモコン設定温度オフセット値または最大流量値における給湯器リモコン設定温度オフセット値の少なくともどちらか一方が設定出来ることとなり、給湯器の能力に応じて、より最適なオフセット値が選べ、より給湯器出湯温度がリモコン設定温度を超えにくくするとともに、より給湯器が最小エネルギーにて追焚きを行うことが可能となる。 1st invention, the hot water storage tank which stores the hot water by fuel cell exhaust heat, the hot water tank outlet temperature detection means which detects the temperature of the said hot water tank outlet, the mixing valve which mixes the hot water and water from the said hot water storage tank, A mixing valve hot water temperature detecting means for detecting a hot water temperature mixed by the mixing valve, a flow rate detecting means for detecting the mixed valve hot water flow rate, and a mixed valve hot water temperature control section for controlling the hot water temperature of the mixing valve; , A hot water heater that receives supply of hot water that has been set to a predetermined temperature by the mixing valve hot water temperature control unit, a hot water inlet pipe that connects the hot water outlet of the mixing valve and the hot water inlet, and the hot water heater is controlled A hot water heater control section for controlling the hot water supply temperature of the hot water heater, and the mixed valve hot water temperature control section has a temperature detected by the hot water tank outlet temperature detecting means that is predetermined from the set temperature of the hot water heater remote control. Below the temperature , The hot water temperature of the mixing valve detected by the mixing valve hot water temperature detecting means from said water heater remote control setting temperature, the temperature obtained by subtracting the offset value corresponding to the flow rate value detected by the mixing valve tapping flow rate detecting means In this way, the mixed valve hot water temperature control unit is configured to set the offset value setting means at the time of the minimum flow rate for setting the hot water heater remote control setting temperature offset value at the minimum flow rate value, and the hot water supply at the maximum flow rate value. Since there is at least one of the maximum flow rate offset value setting means for setting the remote controller set temperature offset value, the hot water supply hot water temperature can be set at any water heater remote control set temperature and any hot water supply flow rate. The remote controller set temperature is not exceeded and the water heater is optimal for reheating with minimum energy. It becomes to select the offset value. In addition, at least one of the water heater remote controller set temperature offset value at the minimum flow value and the water heater remote controller set temperature offset value at the maximum flow value can be set, and a more optimal offset value can be set according to the capacity of the water heater. As a result, the hot water supply temperature can be made less likely to exceed the remote controller set temperature, and the hot water supply can be reheated with minimum energy.

第２の発明は、燃料電池排熱による湯を貯える貯湯槽と、前記貯湯槽出口の温度を検出する貯湯槽出口温度検出手段と、前記貯湯槽からのお湯と水を混合する混合弁と、前記混合弁にて混合された出湯温度を検出する混合弁出湯温度検出手段と、前記混合弁出湯流量を検出する流量検出手段と、前記混合弁の出湯温度を制御する混合弁出湯温度制御部と、前記混合弁出湯温度制御部により所定の温度にされたお湯の供給を受ける給湯器と、前記給湯器を制御する給湯器制御部と、前記給湯器の出湯温度を設定する給湯器リモコンと備え、前記混合弁出湯温度制御部は前記給湯器制御部と給湯器リモコンとの間の温度設定信号を読み取るとともに、前記貯湯槽出口温度検出手段により検出した温度が前記給湯器リモコン設定温度より所定温度より低い場合、前記混合弁出湯温度検出手段により検出する前記混合弁の出湯温度が、前記給湯器リモコン設定温度から、前記混合弁出湯流量検出手段により検出した流量値に対応したオフセット値を引いた温度になるように混合弁出湯温度制御するものであり、前記混合弁出湯温度制御部には最小流量値設定手段および最小流量値における給湯器リモコン設定温度オフセット値を設定する最小流量時オフセット値設定手段と、最大流量値設定手段および最大流量値における前記給湯器リモコン設定温度オフセット値を設定する最大流量時オフセット値設定手段を有することで、給湯器の能力に応じて、より最適なオフセット値が選べ、より給湯器出湯温度がリモコン設定温度を超えにくくするとともに、より給湯器が最小エネルギーにて追焚きを行うことが可能となる。
The second invention is a hot water storage tank for storing hot water generated by exhaust heat from the fuel cell , a hot water tank outlet temperature detecting means for detecting the temperature of the hot water tank outlet, a mixing valve for mixing hot water and water from the hot water tank, A mixing valve hot water temperature detecting means for detecting a hot water temperature mixed by the mixing valve, a flow rate detecting means for detecting the mixed valve hot water flow rate, and a mixed valve hot water temperature control section for controlling the hot water temperature of the mixing valve; A water heater that receives supply of hot water that has been set to a predetermined temperature by the mixing valve hot water temperature controller, a water heater controller that controls the water heater, and a water heater remote controller that sets the hot water temperature of the water heater The mixing valve hot water temperature controller reads a temperature setting signal between the water heater controller and the hot water remote controller, and the temperature detected by the hot water tank outlet temperature detecting means is a predetermined temperature from the hot water heater remote controller set temperature. Yo When the temperature is low, the hot water temperature of the mixing valve detected by the mixed valve hot water temperature detecting means is a temperature obtained by subtracting an offset value corresponding to the flow value detected by the mixed valve hot water flow rate detecting means from the hot water heater remote control set temperature. The mixed valve hot water temperature control unit controls the minimum flow value setting means and the minimum flow rate offset value setting means for setting the remote controller setting temperature offset value at the minimum flow value in the mixed valve hot water temperature control unit. And a maximum flow rate value setting means and a maximum flow rate offset value setting means for setting the water heater remote controller set temperature offset value at the maximum flow value, so that a more optimal offset value can be selected according to the capacity of the water heater. The hot water outlet temperature is less likely to exceed the temperature set by the remote controller, and the hot water heater is more memorable with minimum energy. It is possible to perform.

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。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

（実施の形態１）
図１（ａ）は、本発明の第１の実施の形態における温水供給装置の構成図を示すものである。図１（ａ）において、貯湯槽１と混合弁３湯側入り口部は接続され、貯湯槽出口部には貯湯槽出口温度検出手段２が取り付けられている。混合弁３水側入り口部は水道給水に接続されている。混合弁３出湯口と給湯器７入水口の間には混合弁出湯温度検出手段４および流量検出手段５が接続されている。混合弁出湯温度制御部６と貯湯槽出口温度検出手段２、混合弁３、混合弁出湯温度検出手段４、流量検出手段５とは信号線により電気的に接続されている。給湯器７を制御する給湯器制御部８と給湯器リモコン９とは信号線により電気的に接続されている。さらに混合弁出湯温度制御部６と給湯器制御部８と給湯器リモコン９とは信号線により電気的に接続されている。 (Embodiment 1)
Fig.1 (a) shows the block diagram of the hot water supply apparatus in the 1st Embodiment of this invention. In FIG. 1A, a hot water storage tank 1 and a mixing valve 3 hot water side inlet section are connected, and a hot water tank outlet temperature detecting means 2 is attached to the hot water tank outlet section. The water inlet of the mixing valve 3 is connected to the water supply. A mixing valve hot water temperature detecting means 4 and a flow rate detecting means 5 are connected between the mixing valve 3 hot water outlet and the water heater 7 water inlet. The mixing valve hot water temperature control unit 6, the hot water tank outlet temperature detection means 2, the mixing valve 3, the mixing valve hot water temperature detection means 4, and the flow rate detection means 5 are electrically connected by a signal line. A water heater controller 8 that controls the water heater 7 and a water heater remote controller 9 are electrically connected by a signal line. Further, the mixing valve hot water temperature controller 6, the water heater controller 8, and the water heater remote controller 9 are electrically connected by a signal line.

以上のように構成された温水供給装置について以下その動作、作用を説明する。   The operation and action of the hot water supply apparatus configured as described above will be described below.

貯湯槽１は燃料電池排熱による湯を貯える。燃料電池排熱による湯を貯える貯湯槽１の出口には貯湯槽出口温度検出手段（サーミスタ等）２が設けてられている。混合弁出湯温度制御部６は給湯器制御部８と給湯器リモコン９との間の温度設定信号を読み取るとともに、貯湯槽出口温度検出手段２により貯湯槽から供給されるお湯の温度が給湯器リモコンの設定温度より所定温度高いか低いかを判定する。高い場合は混合弁出湯温度制御部６により混合弁３を制御し水を混合することでリモコン設定温度とする。低い場合は混合弁出湯流量検出手段により検出した流量値に対応したあらかじめ決められたオフセット値にて混合弁出湯温度制御し、混合弁出口温度である（リモコン設定温度−各流量に対するオフセット温度）のお湯を給湯器に供給する。図１（ｂ）に、流量とオフセット値の設定例を示す。オフセット値は、流量に相関した値をとる。このことによりどのような給湯器入水流量でも、給湯器出湯温度がリモコン設定温度を超えないようにするとともに、給湯器が最小エネルギーにて追焚きを行うことが可能となる。   The hot water tank 1 stores hot water generated by exhaust heat from the fuel cell. A hot water tank outlet temperature detecting means (such as a thermistor) 2 is provided at the outlet of the hot water tank 1 for storing hot water generated by exhaust heat from the fuel cell. The mixing valve hot water temperature control unit 6 reads a temperature setting signal between the water heater control unit 8 and the water heater remote controller 9, and the temperature of the hot water supplied from the hot water tank outlet by the hot water tank outlet temperature detecting means 2 is determined by the water heater remote controller. It is determined whether the temperature is higher or lower than the set temperature. When the temperature is high, the mixing valve discharge temperature control unit 6 controls the mixing valve 3 and mixes water to obtain the remote control set temperature. When the temperature is low, the temperature of the mixing valve hot water is controlled by a predetermined offset value corresponding to the flow rate value detected by the mixing valve hot water flow rate detecting means, and the mixing valve outlet temperature (remote control set temperature-offset temperature for each flow rate) Supply hot water to the water heater. FIG. 1B shows a setting example of the flow rate and the offset value. The offset value takes a value correlated with the flow rate. As a result, the hot water supply hot water temperature does not exceed the remote controller set temperature at any hot water supply flow rate, and the hot water supply can be recharged with minimum energy.

また、貯湯槽１の湯を効率よく利用することにより、燃料電池発電の停止を極力少なくでき、燃料電池の効率向上および耐久性を向上させることができる。   In addition, by efficiently using the hot water in the hot water storage tank 1, the fuel cell power generation can be stopped as much as possible, and the efficiency and durability of the fuel cell can be improved.

（実施の形態２）
図２（ａ）は本発明の第２の実施の形態における温水供給装置の構成図を示すものである。混合弁出湯温度制御部６には最小流量値における前記給湯器リモコン設定温度オフセット値を設定する最小流量オフセット設定手段１０と有する。これにより最小流量値における前記給湯器リモコン設定温度オフセット値が設定出来ることとなり、給湯器の能力に応じて、より最適なオフセット値（例：図２（ｂ））が選べ、より給湯器出湯温度がリモコン設定温度を超えにくくするとともに、より給湯器が最小エネルギーにて追焚きを行うことが可能となる。 (Embodiment 2)
Fig.2 (a) shows the block diagram of the hot water supply apparatus in the 2nd Embodiment of this invention. The mixing valve hot water temperature control unit 6 has minimum flow rate offset setting means 10 for setting the hot water heater remote control set temperature offset value at the minimum flow rate value. As a result, the water heater remote controller set temperature offset value at the minimum flow rate value can be set, and a more optimal offset value (for example, FIG. 2 (b)) can be selected according to the capacity of the water heater. This makes it difficult to exceed the temperature set by the remote controller, and allows the water heater to recharge with minimum energy.

（実施の形態３）
図３（ａ）は、本発明の第３の実施の形態における温水供給装置の構成図を示すものである。混合弁出湯温度制御部６には最大流量値における前記給湯器リモコン設定温度オフセット値を設定する最大流量オフセット設定手段１１と有する。これにより最大流量値における前記給湯器リモコン設定温度オフセット値が設定出来ることとなり、給湯器の能力に応じて、より最適なオフセット値（例：図３（ｂ））が選べ、より給湯器出湯温度がリモコン設定温度を超えにくくするとともに、より給湯器が最小エネルギーにて追焚きを行うことが可能となる。 (Embodiment 3)
Fig.3 (a) shows the block diagram of the hot water supply apparatus in the 3rd Embodiment of this invention. The mixing valve hot water temperature control unit 6 has a maximum flow rate offset setting means 11 for setting the hot water heater remote control set temperature offset value at the maximum flow rate value. As a result, the water heater remote controller set temperature offset value at the maximum flow rate value can be set, and a more optimal offset value (for example, FIG. 3B) can be selected according to the capacity of the water heater. This makes it difficult to exceed the temperature set by the remote controller, and allows the water heater to recharge with minimum energy.

（実施の形態４）
図４（ａ）は、本発明の第４の実施の形態における温水供給装置の構成図を示すものである。混合弁出湯温度制御部６には最小流量値における前記給湯器リモコン設定温度オフセット値設定手段１０と、最大流量値における前記給湯器リモコン設定温度オフセット値設定手段１１の両方を有する。これにより最小流量値における前記給湯器リモコン設定温度オフセット値と最大流量値における前記給湯器リモコン設定温度オフセット値との両方が設定出来ることとなり、給湯器の能力に応じて、より最適なオフセット値（例：図４（ｂ））が選べ、より給湯器出湯温度がリモコン設定温度を超えにくくするとともに、より給湯器が最小エネルギーにて追焚きを行うことが可能となる。 (Embodiment 4)
Fig.4 (a) shows the block diagram of the hot water supply apparatus in the 4th Embodiment of this invention. The mixing valve hot water temperature control unit 6 has both the hot water heater remote control set temperature offset value setting means 10 at the minimum flow value and the hot water heater remote control set temperature offset value setting means 11 at the maximum flow value. As a result, both the water heater remote controller set temperature offset value at the minimum flow rate value and the water heater remote controller set temperature offset value at the maximum flow value can be set, and a more optimal offset value ( For example, FIG. 4 (b)) can be selected, and the hot water supply temperature of the hot water heater does not easily exceed the temperature set by the remote controller, and the hot water heater can be reheated with minimum energy.

（実施の形態５）
図５（ａ）は、本発明の第５の実施の形態における温水供給装置の構成図を示すものである。前記混合弁出湯温度制御部６には最小流量値設定手段１２および最小流量値における給湯器リモコン設定温度オフセット値設定手段１０と、最大流量値設定手段１３および最大流量値における前記給湯器リモコン設定温度オフセット値設定手段１１を設定できることとなり、給湯器の能力に応じて、より最適なオフセット値（例：図５（ｂ））が選べ、より給湯器出湯温度がリモコン設定温度を超えにくくするとともに、より給湯器が最小エネルギーにて追焚きを行うことが可能となる。 (Embodiment 5)
Fig.5 (a) shows the block diagram of the hot water supply apparatus in the 5th Embodiment of this invention. The mixing valve hot water temperature control unit 6 includes a minimum flow value setting means 12 and a hot water heater remote control setting temperature offset value setting means 10 at the minimum flow value, a maximum flow value setting means 13 and the hot water heater remote control setting temperature at the maximum flow value. The offset value setting means 11 can be set, and a more optimal offset value (for example, FIG. 5 (b)) can be selected according to the capacity of the water heater, and the hot water outlet temperature is more difficult to exceed the remote control set temperature, It becomes possible for the water heater to recharge with minimum energy.

以上のように、本発明にかかる温水供給装置は、貯湯槽に貯えられたお湯を必要以上に下げず、かつバックアップ給湯器にてリモコン設定温度を超える温度にならないようにするとともに必要最小限のエネルギーにて給湯器追焚きし、リモコン設定温度のお湯となすことが出来ることとなるので燃料電池コージェネシステム、ヒートポンプ給湯機等の貯湯槽を持つ給湯機に利用できる。   As described above, the hot water supply device according to the present invention does not lower the hot water stored in the hot water tank more than necessary, and does not reach the temperature exceeding the remote control set temperature in the backup water heater, and the necessary minimum It can be used for hot water heaters with hot water storage tanks, such as fuel cell cogeneration systems and heat pump water heaters, because it can be used to recharge hot water heaters with energy and can be used as hot water at a remote control set temperature.

（ａ）本発明の実施の形態１における温水供給装置を示す構成図（ｂ）同装置における流量とオフセット値を示す相関図(A) The block diagram which shows the warm water supply apparatus in Embodiment 1 of this invention (b) The correlation figure which shows the flow volume and offset value in the apparatus （ａ）本発明の実施の形態２における温水供給装置を示す構成図（ｂ）同装置における流量とオフセット値を示す相関図(A) The block diagram which shows the warm water supply apparatus in Embodiment 2 of this invention (b) The correlation figure which shows the flow volume and offset value in the apparatus （ａ）本発明の実施の形態３における温水供給装置を示す構成図（ｂ）同装置における流量とオフセット値を示す相関図(A) The block diagram which shows the hot water supply apparatus in Embodiment 3 of this invention (b) The correlation figure which shows the flow volume and offset value in the apparatus （ａ）本発明の実施の形態４における温水供給装置を示す構成図（ｂ）同装置における流量とオフセット値を示す相関図(A) The block diagram which shows the warm water supply apparatus in Embodiment 4 of this invention (b) The correlation figure which shows the flow volume and offset value in the apparatus （ａ）本発明の実施の形態５における温水供給装置を示す構成図（ｂ）同装置における流量とオフセット値を示す相関図(A) The block diagram which shows the hot water supply apparatus in Embodiment 5 of this invention (b) The correlation figure which shows the flow volume and offset value in the apparatus 従来の温水供給装置を示す構成図Configuration diagram showing a conventional hot water supply device

符号の説明Explanation of symbols

１ 貯湯槽
２ 貯湯槽出口温度検出手段
３ 混合弁
４ 混合弁出湯温度検出手段
５ 流量検出手段
６ 混合弁出湯温度制御
７ 給湯器
８ 給湯器制御部
９ 給湯器リモコン
１０ 最小流量時オフセット値設定手段
１１ 最大流量時オフセット値設定手段
１２ 最小流量値設定手段
１３ 最大流量値設定手段 DESCRIPTION OF SYMBOLS 1 Hot water storage tank 2 Hot water tank outlet temperature detection means 3 Mixing valve 4 Mixing valve hot water temperature detection means 5 Flow rate detection means 6 Mixing valve hot water temperature control 7 Water heater 8 Water heater controller 9 Water heater remote controller 10 Minimum flow time offset value setting means 11 Offset value setting means at maximum flow rate 12 Minimum flow value setting means 13 Maximum flow value setting means

Claims (2)

燃料電池排熱による湯を貯える貯湯槽と、前記貯湯槽出口の温度を検出する貯湯槽出口温度検出手段と、前記貯湯槽からのお湯と水を混合する混合弁と、前記混合弁にて混合された出湯温度を検出する混合弁出湯温度検出手段と、前記混合弁出湯流量を検出する流量検出手段と、前記混合弁の出湯温度を制御する混合弁出湯温度制御部と、前記混合弁出湯温度制御部により所定の温度にされたお湯の供給を受ける給湯器と、前記給湯器を制御する給湯器制御部と、前記給湯器の出湯温度を設定する給湯器リモコンと備え、前記混合弁出湯温度制御部は前記給湯器制御部と給湯器リモコンとの間の温度設定信号を読み取るとともに、前記貯湯槽出口温度検出手段により検出した温度が前記給湯器リモコン設定温度より所定温度より低い場合、前記混合弁出湯温度検出手段により検出する前記混合弁の出湯温度が、前記給湯器リモコン設定温度から、前記混合弁出湯流量検出手段により検出した流量値に対応したオフセット値を引いた温度になるように混合弁出湯温度制御するものであり、前記混合弁出湯温度制御部には最小流量値における給湯器リモコン設定温度オフセット値を設定する最小流量時オフセット値設定手段と、最大流量値における前記給湯器リモコン設定温度オフセット値を設定する最大流量時オフセット値設定手段のうち、少なくともどちらか一方を有することを特徴とする温水供給装置。 A hot water storage tank for storing hot water from the fuel cell exhaust heat, a hot water tank outlet temperature detecting means for detecting the temperature of the hot water tank outlet, a mixing valve for mixing hot water and water from the hot water storage tank, and mixing by the mixing valve Mixing valve hot water temperature detecting means for detecting the discharged hot water temperature, flow rate detecting means for detecting the mixed valve hot water flow rate, a mixing valve hot water temperature control unit for controlling the hot water temperature of the mixing valve, and the mixed valve hot water temperature A water heater that receives supply of hot water that has been set to a predetermined temperature by the control unit; a water heater controller that controls the water heater; and a water heater remote controller that sets a tapping temperature of the water heater; If the control unit with read the temperature setting signal between the water heater controller and the water heater remote control, lower than a predetermined temperature than the temperature detected by the hot water storage tank outlet temperature detecting means and the water heater remote control set temperature, before Tapping temperature of the mixing valve for detecting the mixing valve hot water temperature detecting means from said water heater remote control setting temperature, so that the temperature obtained by subtracting the offset value corresponding to the flow rate value detected by the mixing valve tapping flow rate detecting means Mixing valve hot water temperature control is performed, and the mixing valve hot water temperature control unit has a minimum flow rate offset value setting means for setting a hot water heater remote control setting temperature offset value at a minimum flow rate value, and the hot water heater remote control at a maximum flow rate value. A hot water supply apparatus comprising at least one of offset value setting means for maximum flow rate for setting a set temperature offset value . 燃料電池排熱による湯を貯える貯湯槽と、前記貯湯槽出口の温度を検出する貯湯槽出口温度検出手段と、前記貯湯槽からのお湯と水を混合する混合弁と、前記混合弁にて混合された出湯温度を検出する混合弁出湯温度検出手段と、前記混合弁出湯流量を検出する流量検出手段と、前記混合弁の出湯温度を制御する混合弁出湯温度制御部と、前記混合弁出湯温度制御部により所定の温度にされたお湯の供給を受ける給湯器と、前記給湯器を制御する給湯器制御部と、前記給湯器の出湯温度を設定する給湯器リモコンと備え、前記混合弁出湯温度制御部は前記給湯器制御部と給湯器リモコンとの間の温度設定信号を読み取るとともに、前記貯湯槽出口温度検出手段により検出した温度が前記給湯器リモコン設定温度より所定温度より低い場合、前記混合弁出湯温度検出手段により検出する前記混合弁の出湯温度が、前記給湯器リモコン設定温度から、前記混合弁出湯流量検出手段により検出した流量値に対応したオフセット値を引いた温度になるように混合弁出湯温度制御するものであり、前記混合弁出湯温度制御部には最小流量値設定手段および最小流量値における給湯器リモコン設定温度オフセット値を設定する最小流量時オフセット値設定手段と、最大流量値設定手段および最大流量値における前記給湯器リモコン設定温度オフセット値を設定する最大流量時オフセット値設定手段を有することを特徴とする温水供給装置。 A hot water storage tank for storing hot water from the fuel cell exhaust heat, a hot water tank outlet temperature detecting means for detecting the temperature of the hot water tank outlet, a mixing valve for mixing hot water and water from the hot water storage tank, and mixing by the mixing valve Mixing valve hot water temperature detecting means for detecting the discharged hot water temperature, flow rate detecting means for detecting the mixed valve hot water flow rate, a mixing valve hot water temperature control unit for controlling the hot water temperature of the mixing valve, and the mixed valve hot water temperature A water heater that receives supply of hot water that has been set to a predetermined temperature by the control unit; a water heater controller that controls the water heater; and a water heater remote controller that sets a tapping temperature of the water heater; The controller reads a temperature setting signal between the water heater controller and the water heater remote controller, and when the temperature detected by the hot water tank outlet temperature detecting means is lower than a predetermined temperature below the water heater remote controller set temperature, The hot water temperature of the mixing valve detected by the mixing valve hot water temperature detecting means is a temperature obtained by subtracting an offset value corresponding to the flow rate value detected by the mixing valve hot water flow rate detecting means from the hot water heater remote control set temperature. Mixing valve hot water temperature control, the mixing valve hot water temperature control unit is set to a minimum flow rate value setting means, an offset value setting means at the time of a minimum flow rate for setting a water heater remote control setting temperature offset value at the minimum flow value, and a maximum flow rate hot water supply apparatus characterized by having a maximum flow rate during the offset value setting means for setting the water heater remote control setting temperature offset value in the value setting means and the maximum flow rate value.
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