JP2003083609A - Hot water mixing unit for hot water feeder - Google Patents
Hot water mixing unit for hot water feederInfo
- Publication number
- JP2003083609A JP2003083609A JP2002108348A JP2002108348A JP2003083609A JP 2003083609 A JP2003083609 A JP 2003083609A JP 2002108348 A JP2002108348 A JP 2002108348A JP 2002108348 A JP2002108348 A JP 2002108348A JP 2003083609 A JP2003083609 A JP 2003083609A
- Authority
- JP
- Japan
- Prior art keywords
- water
- hot water
- temperature
- hot
- mixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば太陽熱温水
器等の自然エネルギーを利用した温水供給装置や、各種
廃熱を利用した温水供給装置を給湯器に接続する為の給
湯器用湯水混合ユニットに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply unit for connecting a hot water supply device utilizing natural energy such as a solar water heater or a hot water supply device utilizing various kinds of waste heat to a water heater. It is a thing.
【０００２】[0002]
【従来の技術】太陽熱温水器は、天候等により目的温度
の温水が取り出せない為に、給湯器を補助熱源として接
続してエネルギー資源の有効利用を図れるようにした給
湯システムがある。そして、該給湯システムとして、特
開平１０−３３２１９７号の発明が知られている。2. Description of the Related Art Solar water heaters have a hot water supply system in which hot water of a target temperature cannot be taken out due to weather or the like, so that a water heater is connected as an auxiliary heat source so that energy resources can be effectively used. As the hot water supply system, the invention of Japanese Patent Laid-Open No. 10-332197 is known.
【０００３】このものでは、ガスバーナで加熱される熱
交換器を備えた給湯器の水入口には、太陽熱温水器で沸
かされた温水が給湯器用湯水混合ユニットを介して供給
されるようになっている。In this structure, hot water boiled by a solar water heater is supplied to a water inlet of a water heater having a heat exchanger heated by a gas burner through a hot water mixing unit for a water heater. There is.
【０００４】そして、上記給湯器用湯水混合ユニット
は、二つの流入口から合流点を経て一つの流出口に繋が
る通水回路が形成された基本的構成を有していると共
に、前記二つの流入口には太陽熱温水器側からの温水が
流れる上流側温水回路と水道水が流れる給水回路が各別
に接続されている。又、前記合流点には湯水混合器が配
設されていると共に、前記一つの流出口は給湯器の水入
口に配管接続されている。The hot and cold water mixing unit for a water heater has a basic structure in which a water passage is formed from the two inlets to the one outlet through the confluence and the two inlets. An upstream hot water circuit through which hot water from the solar water heater side flows and a water supply circuit through which tap water flows are separately connected to each other. A hot / water mixer is arranged at the confluence, and the one outlet is connected to the water inlet of the water heater by piping.
【０００５】このものでは、太陽熱温水器から流出する
温水の温度が基準温度（給湯器に備えられたリモコンの
湯温設定器の設定温度と実質的に等しい温度）以上であ
る場合は給湯器のガスバーナを消火状態に維持すると共
に太陽熱温水器から流出する温水の温度が前記湯温設定
器の設定温度に温度低下するまで給湯器用湯水混合ユニ
ットで前記温水に水道水を混合する。一方、前記太陽熱
温水器から流出する温水の温度が前記基準温度未満の場
合には次のように制御する。In this case, when the temperature of the hot water flowing out from the solar water heater is equal to or higher than the reference temperature (the temperature substantially equal to the set temperature of the hot water temperature setting device of the remote controller provided in the water heating device), While maintaining the gas burner in a fire extinguishing state, tap water is mixed with the hot water in the hot water mixing unit for the water heater until the temperature of the hot water flowing out from the solar water heater falls to the set temperature of the hot water temperature setting device. On the other hand, when the temperature of the hot water flowing out from the solar water heater is lower than the reference temperature, the control is performed as follows.
【０００６】即ち、給湯器のガスバーナを最小燃焼量で
燃焼させても給湯器からの出湯温度が既述設定温度を超
えてしまうのを防止する為、給湯量とは無関係に、太陽
熱温水器からの温水に対して水道配管からの冷水を給湯
器用湯水混合ユニットで混合してこれを基底温度まで一
旦温度低下させ、この温度低下した温水を給湯器で設定
温度まで加熱する。従って、このものでは、給湯器が最
低作動流量（単位時間当たりに給湯可能な温水の下限流
量）で作動する小量出湯時でも出湯蛇口等から熱湯が流
出する危険がない。That is, even if the gas burner of the water heater is burned with the minimum amount of combustion, the temperature of the hot water discharged from the water heater is prevented from exceeding the preset temperature. The cold water from the water supply pipe is mixed with the hot water of (1) by the hot water mixing unit for the water heater, the temperature of the hot water is once lowered to the base temperature, and the hot water having the lowered temperature is heated to the set temperature by the water heater. Therefore, in this device, there is no risk of hot water flowing out from the tap, even when the hot water supply device operates at the minimum operating flow rate (the lower limit flow rate of hot water that can be supplied per unit time).
【０００７】[0007]
【発明が解決しようとする課題】しかしながら上記従来
のものでは、給湯量とは無関係に、給湯器用湯水混合ユ
ニットから流出する混合水の温度が固定の基底温度に温
度低下するまで太陽熱温水器の温水に冷水を混合させる
から、給湯量が多い場合には、ガスバーナを強火燃焼さ
せなければ設定温度の温水が給湯器から流出しない場合
がある。このことから、上記従来のものでは、給湯量が
多い場合は、前記強火時の燃焼量と既述最小燃焼量との
差に相当する分だけ、太陽熱温水器の温水を過剰に温度
低下させていることとなり、その分、太陽熱温水器に蓄
えられた熱エネルギの効率的な利用が阻害されると共に
給湯器が無駄に燃焼される結果を招来していた。However, in the above-mentioned conventional apparatus, the hot water of the solar water heater is irrespective of the hot water supply amount until the temperature of the mixed water flowing out from the hot water mixing unit for the water heater drops to a fixed base temperature. Since the cold water is mixed with the hot water, when the amount of hot water supplied is large, hot water at the set temperature may not flow out of the water heater unless the gas burner is burned with high heat. From this, in the above-mentioned conventional one, when the hot water supply amount is large, the temperature of the hot water of the solar water heater is excessively lowered by an amount corresponding to the difference between the combustion amount at the time of high heat and the above-mentioned minimum combustion amount. As a result, the efficient use of the heat energy stored in the solar water heater is hindered, and the water heater is unnecessarily burned.
【０００８】本発明は、かかる点に鑑みて成されたもの
で、『上流端が給水回路に接続される給水配管接続口と
なった冷水回路と、上流端が温水供給装置からの温水が
流れる上流側温水回路に接続される温水配管接続口とな
り且つ湯温センサが設けられた温水回路と、前記冷水回
路と前記温水回路が合流する合流点からその下流側の給
湯器接続口に繋がり且つ混合水温センサが設けられた混
合水回路と、前記合流点に於ける前記冷水と温水との混
合割合を調節する湯水混合器とを具備し、前記湯温セン
サの検知温度が前記給湯器接続口に配管接続される給湯
器に備えられた湯温設定器の設定温度より高い場合は、
前記混合水温センサの検知温度が前記設定温度になるよ
うに前記湯水混合器の動作が制御され、前記湯温センサ
の検知温度が前記設定温度より低い場合は、前記混合水
温センサの検知温度が前記設定温度より低い混合目標温
度になるように前記湯水混合器の動作が制御される、給
湯器用湯水混合ユニット』に於いて、湯温設定器で設定
された設定温度より低温状態にある温水供給装置の温水
に更に冷水を混合する必要がある場合でも、前記温水に
対する冷水の混合割合を必要最小限に抑えられるように
し、これにより、太陽熱温水器等の温水供給装置に蓄え
られた熱エネルギの利用効率の向上を図ると共に給湯器
が無駄に燃焼する不都合を防止することをその課題とす
る。The present invention has been made in view of the above point. "A cold water circuit having an upstream end serving as a water supply pipe connecting port connected to a water supply circuit and an upstream end through which hot water from a hot water supply device flows. A hot water circuit that serves as a hot water pipe connection port connected to the upstream hot water circuit and is provided with a hot water temperature sensor, and from the confluence of the cold water circuit and the hot water circuit to the downstream water heater connection port and mixing. A mixed water circuit provided with a water temperature sensor, and a hot and cold water mixer for adjusting the mixing ratio of the cold water and the hot water at the confluence, and the detected temperature of the hot water temperature sensor is at the water heater connection port. If the temperature is higher than the set temperature of the hot water temperature setting device provided in the water heater connected to the pipe,
The operation of the hot water mixer is controlled so that the detection temperature of the mixed water temperature sensor becomes the set temperature, and the detected temperature of the hot water temperature sensor is lower than the set temperature, the detected temperature of the mixed water temperature sensor is In the hot and cold water mixing unit for a water heater, in which the operation of the hot and cold water mixer is controlled so that the mixing target temperature is lower than the set temperature, a hot water supply device in a lower temperature state than the set temperature set by the hot water temperature setting device. Even when it is necessary to further mix cold water with the hot water of the above, it is possible to minimize the mixing ratio of the cold water to the hot water, and thereby use the thermal energy stored in the hot water supply device such as a solar water heater. An object of the invention is to improve efficiency and prevent the disadvantage that the water heater burns wastefully.
【０００９】[0009]
【課題を解決するための手段】[１項]上記課題を解決す
るための本発明の技術的手段は、『最小燃焼量で燃焼す
る前記給湯器の最小発熱量Ｗminを前記混合水の流量Ｑ
で割り算して最小上昇温度ΔＴを求める最小上昇温度演
算手段と、前記最小上昇温度ΔＴを前記設定温度Ｓから
減算して混合目標温度ＭＴを求める目標温度演算手段
と、前記湯温センサの検知温度が前記設定温度Ｓより低
い場合は、前記混合水温センサの検知温度が前記混合目
標温度ＭＴに等しくなるように前記湯水混合器の動作を
制御する混合器制御手段を具備する』ことである。[Means for Solving the Problem] [1] The technical means of the present invention for solving the above-mentioned problem is that "the minimum heat generation amount Wmin of the water heater that burns at the minimum combustion amount is the flow rate Q of the mixed water.
And a target temperature calculation means for subtracting the minimum rise temperature ΔT from the set temperature S to obtain a mixed target temperature MT, and a detected temperature of the hot water temperature sensor. Is lower than the set temperature S, a mixer control means is provided for controlling the operation of the hot water mixer so that the temperature detected by the mixed water temperature sensor becomes equal to the mixed target temperature MT ”.
【００１０】上記技術的手段に記載した混合水の流量Ｑ
は、本発明に係る給湯器用湯水混合ユニットに水量セン
サを内蔵させてこの水量センサで計測しても良いが、給
湯器に内蔵された水量センサで計測しても良い。The flow rate Q of the mixed water described in the above technical means
The water amount sensor may be incorporated in the hot and cold water mixing unit for a water heater according to the present invention and the water amount sensor may be used for measurement, or the water amount sensor incorporated in the water heater may be used for measurement.
【００１１】上記技術的手段は次のように作用する。湯
温センサの検知温度（温水供給装置からの温水の温度）
が湯温設定器の設定温度Ｓより低い場合に於いて給湯動
作が開始すると、混合水回路を流れる混合水の流量Ｑが
水量センサで検知されると共に、最小燃焼量で動作する
給湯器の発熱量たる最小発熱量Ｗminを前記流量Ｑで割
り算して最小上昇温度ΔＴを求める演算が最小上昇温度
演算手段で実行される。The above technical means operates as follows. Detection temperature of hot water temperature sensor (temperature of hot water from hot water supply device)
When the hot water supply operation starts when the temperature is lower than the set temperature S of the hot water temperature setter, the flow rate Q of the mixed water flowing through the mixed water circuit is detected by the water amount sensor, and the heat generation of the water heater operating with the minimum combustion amount is generated. The minimum rising temperature calculating means executes the calculation for obtaining the minimum rising temperature ΔT by dividing the minimum heating value Wmin which is the amount by the flow rate Q.
【００１２】即ち、本発明の給湯器用湯水混合ユニット
から給湯器に実際に供給されている流量Ｑの混合水を上
記最小燃焼量で動作する給湯器によって加熱した場合に
これを加熱昇温できる最小上昇温度ΔＴが演算される。
すると、給湯器の湯温設定器で設定された設定温度Ｓよ
りも前記最小上昇温度ΔＴだけ低い混合目標温度ＭＴの
混合水を給湯器に供給できれば、これを最小燃焼量の給
湯器で最小上昇温度ΔＴだけ加熱することにより設定温
度Ｓに昇温させ得ることが分かる。That is, when the mixed water of the flow rate Q actually supplied to the water heater from the hot water mixing unit for the water heater of the present invention is heated by the water heater operating with the above-mentioned minimum combustion amount, it can be heated and heated to the minimum. The temperature rise ΔT is calculated.
Then, if the mixed water of the mixing target temperature MT lower than the set temperature S set by the hot water temperature setting device of the water heater by the minimum rising temperature ΔT can be supplied to the water heater, this is raised by the water heater of the minimum combustion amount to the minimum. It can be seen that the temperature can be raised to the set temperature S by heating the temperature ΔT.
【００１３】そこで、目標温度演算手段は、上記最小上
昇温度ΔＴを設定温度Ｓから減算して混合目標温度ＭＴ
を求める演算を実行する一方、混合水温センの検知温度
が前記混合目標温度ＭＴに等しくなるように湯水混合器
の動作を混合器制御手段が制御する。Therefore, the target temperature calculating means subtracts the minimum rise temperature ΔT from the set temperature S to obtain the mixed target temperature MT.
The mixer control means controls the operation of the hot water mixer so that the detected temperature of the mixed water temperature sensor becomes equal to the mixed target temperature MT.
【００１４】即ち、温水供給装置からの温水の温度が前
記設定温度Ｓより低いが混合目標温度ＭＴより高い場合
は、湯水混合器によって冷水の混合割合が増やされて混
合水の温度が上記混合目標温度ＭＴに一致させられ、こ
れより温度低下するのが防止される。その結果、最小燃
焼量で作動する給湯器によって前記混合水が設定温度Ｓ
まで加熱昇温される。このように制御することによっ
て、温水供給装置の温水を冷水で過剰に希釈しないよう
にし、該冷水の混合割合を最小限に抑えることができ
る。又、上記のように制御する結果、給湯器から設定温
度Ｓの温水が供給されるから、予期しない高温水が給湯
器から流出するような危険がない。That is, when the temperature of the hot water from the hot water supply device is lower than the set temperature S but higher than the mixing target temperature MT, the mixing ratio of the cold water is increased by the hot water mixer to bring the temperature of the mixed water to the mixing target. The temperature is matched with the temperature MT, and the temperature is prevented from lowering. As a result, the mixed water is heated to the set temperature S by the water heater operating with the minimum combustion amount.
It is heated up to. By controlling in this manner, the hot water of the hot water supply device is prevented from being excessively diluted with cold water, and the mixing ratio of the cold water can be minimized. Further, as a result of the above control, hot water of the set temperature S is supplied from the water heater, so there is no danger of unexpected high temperature water flowing out of the water heater.
【００１５】一方、温水供給装置の温水が前記混合目標
温度ＭＴより低温の場合に於いて前記混合水の温度を混
合目標温度ＭＴに近づけるように湯水混合器が動作する
と、冷水の混合割合が最小になる。即ち、この場合は、
温水供給装置からの温水がそのまま給湯器に供給され、
該温水が給湯器で設定温度Ｓまで加熱昇温される。On the other hand, when the hot water of the hot water supply device is lower than the mixing target temperature MT, when the hot and cold water mixer is operated so as to bring the temperature of the mixed water close to the mixing target temperature MT, the mixing ratio of cold water is minimized. become. That is, in this case,
Hot water from the hot water supply device is directly supplied to the water heater,
The hot water is heated and raised to the set temperature S by the water heater.
【００１６】[２項]１項において、『前記水量センサは
前記混合水回路に設けられている 』ものでは、太陽熱
温水器等の温水供給装置の接続を予定してない既存の給
湯器に対して温水供給装置を接続することが出来る。即
ち、温水供給装置の接続を予定していない既存の給湯器
に組み込まれた水量センサが出力する流量信号のデータ
形式と本発明の給湯器用湯水混合ユニットで処理する流
量信号のデータ形式が異なっている場合でも、本発明の
給湯器用湯水混合ユニットを給湯器に適用することが出
来、汎用性のある給湯器用湯水混合ユニットを提供する
ことができる。[2] In [1] "The water amount sensor is provided in the mixed water circuit", the existing water heater not planned to be connected to a hot water supply device such as a solar water heater A hot water supply device can be connected. That is, the data format of the flow rate signal output by the water amount sensor incorporated in the existing water heater not planned to be connected to the hot water supply device and the data format of the flow rate signal processed by the hot water mixing unit for the water heater of the present invention are different. Even if it is present, the hot / water mixing unit for a water heater of the present invention can be applied to a water heater, and a hot / water mixing unit for a water heater having versatility can be provided.
【００１７】[0017]
【発明の効果】本発明は、上記構成であるから次の特有
の効果を有する。温水供給装置からの温水に対する冷水
の混合割合を最小限に抑えることができるから、温水供
給装置に蓄えられたエネルギーを効率的に利用すること
が出来ると共に給湯器が無駄に燃焼する不都合を防止す
ることができる。The present invention, having the above-mentioned structure, has the following unique effects. Since the mixing ratio of cold water to hot water from the hot water supply device can be minimized, the energy stored in the hot water supply device can be efficiently used and the disadvantage that the water heater burns wastefully is prevented. be able to.
【００１８】２項のものでは、水量センサが混合水回路
に配設されているから、給湯器に組み込まれた水量セン
サの流量信号を利用する必要がなくなる。従って、既存
の種々の形式の給湯器に対しても適用できる汎用性のあ
る給湯器用湯水混合ユニットを提供することができる。In the second aspect, since the water amount sensor is arranged in the mixed water circuit, it is not necessary to use the flow rate signal of the water amount sensor incorporated in the water heater. Therefore, it is possible to provide a versatile hot-water mixing unit for a water heater that can be applied to various existing water heaters.
【００１９】[0019]
【発明の実施の形態】次に、上記した本発明の実施の形
態を図面に従って詳述する。図１は、本発明の実施の形
態に係る給湯器用湯水混合ユニット(1)を用いた給湯シ
ステムの概念図であり、既述発明特定事項たる温水供給
装置としての太陽熱温水器(5)は給湯器用湯水混合ユニ
ット(1)を介して給湯器(7)に配管接続されている。以
下、各部の詳細を説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the embodiments of the present invention described above will be described in detail with reference to the drawings. FIG. 1 is a conceptual diagram of a hot water supply system using a hot water / water mixing unit (1) for a hot water supply according to an embodiment of the present invention. It is connected to the water heater (7) by piping through the hot water mixing unit (1). The details of each unit will be described below.
【００２０】[太陽熱温水器(5)について]太陽熱温水器
(5)は、太陽熱を吸収する集熱器(50)と貯湯タンク(51)
内とを循環するように形成された蓄熱配管(52)を具備し
ており、該蓄熱配管(52)には膨張タンク(53)と循環ポン
プ(54)が配設されている。[About solar water heater (5)] Solar water heater
(5) is a collector (50) that absorbs solar heat and a hot water storage tank (51)
The heat storage pipe (52) is formed so as to circulate inside and inside, and the expansion tank (53) and the circulation pump (54) are arranged in the heat storage pipe (52).
【００２１】又、貯湯タンク(51)の底部には水道配管か
ら冷水を供給するソーラ用給水管(55)と水抜栓(57)を具
備する水抜回路(58)が接続されていると共に、貯湯タン
ク(51)の頂部からは上流側温水回路(56)が引き出されて
いる。Further, the bottom of the hot water storage tank (51) is connected to a water supply pipe (55) for solar water supplying cold water from a water pipe and a water drain circuit (58) having a water drain plug (57), and the hot water is stored. An upstream hot water circuit (56) is drawn out from the top of the tank (51).
【００２２】[給湯器(7)について]給湯器(7)は、図示し
ないガスバーナで加熱される熱交換器が内蔵された給湯
器本体(70)と、該給湯器本体(70)に電気接続されたリモ
コン(71)を備えていると共に、該リモコン(71)には、運
転スイッチ(72)と、浴槽(81)に湯張りする際に操作する
湯張りスイッチ(73)と湯温設定器(75)と、更に、給湯器
の運転状態を表示する表示部(74)が形成されている。[Water heater (7)] The water heater (7) is electrically connected to the water heater body (70) having a built-in heat exchanger heated by a gas burner (not shown), and the water heater body (70). The remote control (71) is provided with an operation switch (72), a water filling switch (73) operated when filling the bathtub (81) with hot water, and a water temperature setting device. (75) and a display section (74) for displaying the operating state of the water heater.
【００２３】又、給湯器本体(70)と浴槽(81)との間は、
湯張り及び追焚きに使用される往き管(82)と戻り管(83)
で接続されていると共に、更に、給湯器本体(70)から引
き出された給湯回路(84)には出湯蛇口(85)が設けられて
いる。Between the water heater body (70) and the bathtub (81),
Outgoing pipe (82) and return pipe (83) used for filling and reheating
In addition, the hot water supply circuit (84) drawn from the water heater main body (70) is further provided with a hot water outlet faucet (85).
【００２４】[給湯器用湯水混合ユニット(1)について]
本発明の対象たる給湯器用湯水混合ユニット(1)には、
上記太陽熱温水器(5)からの温水が流れる上流側温水回
路(56)が接続される温水配管接続口(16)と、既述ソーラ
用給水管(55)から分岐した給水回路(10)が接続される給
水配管接続口(17)と、更に、給湯器本体(70)の水入口(7
7)に接続される給湯器接続口(18)が設けられている。[About hot water mixing unit (1) for water heater]
The hot and cold water mixing unit (1) for a water heater as an object of the present invention,
The hot water pipe connection port (16) to which the upstream hot water circuit (56) in which hot water from the solar water heater (5) flows is connected, and the water supply circuit (10) branched from the above-mentioned solar water supply pipe (55). The water supply pipe connection port (17) to be connected, and the water inlet (7
A water heater connection port (18) connected to 7) is provided.
【００２５】上記温水配管接続口(16)の下流側に形成さ
れた温水回路(14)には、バキュームブレーカ(12)と、逆
止弁(13)と、更に、湯温センサ(19)が、この順序で上流
側から配設されている。又、温水回路(14)の上流端近傍
には、通水内の塵芥を除去する機能と回路の排水機能を
兼備した水抜栓(21)が設けられている。The hot water circuit (14) formed on the downstream side of the hot water pipe connection port (16) has a vacuum breaker (12), a check valve (13), and a hot water temperature sensor (19). , Are arranged in this order from the upstream side. Further, near the upstream end of the hot water circuit (14), a water drain plug (21) having both a function of removing dust in the water flow and a function of draining the circuit is provided.
【００２６】一方、冷水回路(15)には、逆止弁(22)と給
水温センサ(23)と更に湯水混合器(20)がこの順序で配設
されていると共に、該湯水混合器(20)は、温水回路(14)
と冷水回路(15)の合流点に配設された温水調節弁(25)と
その上流側に於ける冷水回路(15)内に配設された冷水調
節弁(24)とから構成されている。そして、上記冷水調節
弁(24)と温水調節弁(25)は、これらに対応するパルスモ
ータ(240)(250)の回転によって先端の弁体(241)(251)を
弁口(26)(27)に接離させ、これによって、弁口(26)(27)
の開度を変化させて流量調節するように構成されてい
る。又、上記冷水回路(15)に於ける給水温センサ(23)と
湯水混合器(20)の間から引き出されたバイパス回路(28)
は前記合流点の下流側に位置する混合水回路(29)に接続
されている。そして、このバイパス回路(28)には、該バ
イパス回路(28)を開閉する為の常開電磁弁(31)が設けら
れていると共に、上記混合水回路(29)には混合水の流量
を計測する水量センサ(32)と混合水温センサ(33)と過昇
温検知センサ(34)と更に水抜き栓(35)が設けられてお
り、該水抜き栓(35)は上記混合水回路(29)などの水圧が
過剰上昇したときに開弁して圧力を開放する逃がし弁機
能を兼備している。又、冷水回路(15)の上流端近傍に
は、通水の除塵機能と排水機能を兼備した水抜栓(30)が
設けられている。On the other hand, in the cold water circuit (15), the check valve (22), the feed water temperature sensor (23) and the hot water mixer (20) are arranged in this order, and the hot water mixer ( 20) is the hot water circuit (14)
And a cold water control valve (25) arranged at the confluence of the cold water circuit (15) and a cold water control valve (24) arranged in the cold water circuit (15) on the upstream side. . Then, the cold water control valve (24) and the hot water control valve (25), the corresponding pulse motor (240) (250) by the rotation of the tip valve body (241) (251) valve opening (26) ( 27), which results in valve openings (26) (27)
The flow rate is adjusted by changing the opening degree of. Also, a bypass circuit (28) drawn out between the hot water temperature sensor (23) and the hot water mixer (20) in the cold water circuit (15).
Is connected to a mixed water circuit (29) located downstream of the confluence. The bypass circuit (28) is provided with a normally open solenoid valve (31) for opening and closing the bypass circuit (28), and the mixed water circuit (29) is provided with a flow rate of mixed water. A water amount sensor (32) for measurement, a mixed water temperature sensor (33), an overheating detection sensor (34), and a water drain plug (35) are further provided, and the water drain plug (35) is the mixed water circuit ( It also has a relief valve function that opens the pressure by opening the valve when the water pressure such as 29) rises excessively. Further, near the upstream end of the cold water circuit (15), a water drain plug (30) having both a dust removing function and a draining function for water passage is provided.
【００２７】そして、既述湯温センサ(19)，給水温セン
サ(23)，湯水混合器(20)，常開電磁弁(31)，水量センサ
(32) ，混合水温センサ(33)及び過昇温検知センサ(34)
等の電気部品は制御装置(11)に電気接続されており、該
制御装置(11)によって、湯水混合器(20)の動作が制御さ
れるようになっている。The hot water temperature sensor (19), the water supply temperature sensor (23), the hot water mixer (20), the normally open solenoid valve (31), and the water amount sensor
(32), mixed water temperature sensor (33) and over temperature detection sensor (34)
Electrical components such as are electrically connected to the control device (11), and the operation of the hot water mixer (20) is controlled by the control device (11).
【００２８】[給湯動作の実際]次に、上記給湯システム
の動作を説明する。給湯器用湯水混合ユニット(1)に組
み込まれた制御装置(11)には、図２のフローチャートに
示す内容の制御動作を実行するマイクロコンピュータが
格納されており、以下、本実施の形態を説明する為の給
湯システムの動作を図２のフローチャートに従って記載
する。[Actual Operation of Hot Water Supply] Next, the operation of the hot water supply system will be described. The control device (11) incorporated in the hot and cold water mixing unit (1) for a water heater stores a microcomputer that executes the control operation of the contents shown in the flowchart of FIG. 2, and the present embodiment will be described below. The operation of the hot water supply system for the purpose will be described according to the flowchart of FIG.
【００２９】先ず、給湯器(7)のリモコン(71)に設けら
れた運転スイッチ(72)が操作されたか否かを示す信号が
給湯器本体(70)から通信ケーブル(79)を介して給湯器用
湯水混合ユニット(1)の制御装置(11)に送信されるのを
ステップ(ST1)で監視する。First, a signal indicating whether or not the operation switch (72) provided on the remote controller (71) of the water heater (7) is operated is supplied from the water heater body (70) via the communication cable (79). The transmission to the control device (11) of the dexterous hot and cold water mixing unit (1) is monitored in step (ST1).
【００３０】次に、水量センサ(32)が検知する混合水の
流量Ｑが基底流量（本実施の形態では、２リットル／
分）を超えたか否かがステップ(ST2)で判断される。そ
して、出湯蛇口(85)の開放操作や湯張りスイッチ(73)の
投入によって前記基底流量を超える流量Ｑの混合水が流
れている場合はステップ(ST3)で常開電磁弁(31)が閉じ
られた後に、湯温設定器(75)で設定された設定温度に１
℃を加えた基準温度よりも湯温センサ(19)の検知温度が
小さいか否かがステップ(ST4)で判断される。尚、上記
１℃を加えるのは、太陽熱温水器(5)からの温水が湯温
センサ(19)で温度検知された後にその下流側の湯水混合
器(20)等の配設位置まで流下する間に温度低下すること
を考慮したものである。即ち、本実施の形態では、温水
回路(14)に沿った湯温センサ(19)と湯水混合器(20)との
距離を考慮した許容誤差温度たる１℃を設定温度に加算
し、該加算値を基準温度としているのである。Next, the flow rate Q of the mixed water detected by the water amount sensor (32) is the base flow rate (in this embodiment, 2 liter /
Minutes) is determined in step (ST2). Then, when the mixed water with the flow rate Q exceeding the base flow rate is flowing by opening the hot water tap (85) or turning on the hot water switch (73), the normally open solenoid valve (31) is closed in step (ST3). After being heated, the temperature set by the hot water temperature setting device (75) is set to 1
In step (ST4), it is determined whether or not the temperature detected by the hot water temperature sensor (19) is lower than the reference temperature added with ° C. The above 1 ° C. is added to the hot water from the solar water heater (5) after the temperature is detected by the hot water temperature sensor (19) and then flows down to the position where the hot and cold water mixer (20) or the like is arranged downstream thereof. This is due to the fact that the temperature drops during that time. That is, in the present embodiment, the allowable error temperature of 1 ° C. in consideration of the distance between the hot water temperature sensor (19) and the hot water mixer (20) along the hot water circuit (14) is added to the set temperature, and the addition is performed. The value is used as the reference temperature.
【００３１】そして、湯温センサ(19)の検知温度が上記
基準温度（設定温度に許容誤差たる１℃を加えた値）未
満の場合は、水量センサ(32)の出力から判断される流量
Ｑの混合水を最小燃焼量（ガスバーナの下限燃焼量）で
動作する給湯器によって加熱した場合にこれを加熱昇温
できる最小上昇温度ΔＴが演算される（ステップ(ST
5)）。即ち、上記最小燃焼量で動作する給湯器の発熱量
を最小発熱量Ｗminとした場合、最小上昇温度ΔＴ＝最
小発熱量Ｗmin／流量Ｑが演算される。従って、本実施
の形態では、この最小上昇温度ΔＴを求める演算を実行
するマイクロコンピュータの機能部が既述１項で記載し
た発明特定事項たる最小上昇温度演算手段に対応する。When the detected temperature of the hot water temperature sensor (19) is lower than the reference temperature (value obtained by adding 1 ° C which is an allowable error to the set temperature), the flow rate Q judged from the output of the water amount sensor (32). When the mixed water of is heated by the water heater operating with the minimum combustion amount (the lower limit combustion amount of the gas burner), the minimum rise temperature ΔT capable of heating and heating it is calculated (step (ST
Five)). That is, when the heat generation amount of the water heater operating with the minimum combustion amount is set to the minimum heat generation amount Wmin, the minimum rising temperature ΔT = minimum heat generation amount Wmin / flow rate Q is calculated. Therefore, in the present embodiment, the functional unit of the microcomputer that executes the calculation for obtaining the minimum rise temperature ΔT corresponds to the minimum rise temperature calculation means which is an item for specifying the invention described in the above item 1.
【００３２】上記最小上昇温度ΔＴが演算されると、湯
温設定器(75)で設定された設定温度よりも前記最小上昇
温度ΔＴだけ低い混合目標温度ＭＴに混合水（湯水混合
器(20)の吐出水）の温度を調節することができれば、最
小燃焼量で作動する給湯器から流出する温水の温度が湯
温設定器(75)で設定された設定温度Ｓになることが分か
る。そこで、ステップ(ST6)に於いて、混合目標温度Ｍ
Ｔ＝設定温度Ｓ−最小上昇温度ΔＴが演算される。尚、
本実施の形態では、上記混合目標温度ＭＴを求めるステ
ップ(ST6)の制御を実行するマイクロコンピュータ内の
機能部が既述目標温度演算手段に対応する。When the minimum rising temperature ΔT is calculated, mixed water (hot water mixer (20)) is added to the mixing target temperature MT which is lower than the set temperature set by the hot water temperature setting device (75) by the minimum rising temperature ΔT. It is understood that if the temperature of the discharge water) can be adjusted, the temperature of the hot water flowing out of the water heater operating with the minimum combustion amount becomes the set temperature S set by the hot water temperature setting device (75). Therefore, in step (ST6), the mixing target temperature M
T = set temperature S−minimum temperature rise ΔT is calculated. still,
In the present embodiment, the functional unit in the microcomputer that executes the control of the step (ST6) of obtaining the mixed target temperature MT corresponds to the target temperature calculation means described above.
【００３３】次に、湯温センサ(19)の検知温度が上記演
算された混合目標温度ＭＴ以下の場合はステップ(ST7)
からステップ(ST8)に制御が移行して冷水回路(15)から
の冷水の混合割合が最小になるように湯水混合器(20)を
制御する。即ち、湯水混合器(20)を構成する冷水調節弁
(24)の開度を最小に設定すると共に温水調節弁(25)を全
開状態にする。すると、混合目標温度ＭＴ以下の温水が
給湯器用湯水混合ユニット(1)の混合水回路(29)から給
湯器本体(70)に供給され、該温水が湯温設定器(75)で設
定された設定温度Ｓになるまで給湯器本体(70)で加熱昇
温され、これが出湯蛇口(85)や浴槽(81)に給湯される。Next, if the temperature detected by the hot water temperature sensor (19) is equal to or lower than the calculated target mixing temperature MT, step (ST7).
To step (ST8), the hot water mixer (20) is controlled so that the mixing ratio of the cold water from the cold water circuit (15) is minimized. That is, the cold water control valve that constitutes the hot water mixer (20)
Set the opening of (24) to the minimum and fully open the hot water control valve (25). Then, hot water below the mixing target temperature MT is supplied from the mixing water circuit (29) of the hot water mixing unit (1) for the water heater to the water heater body (70), and the hot water is set by the hot water temperature setting device (75). The water heater main body (70) heats and raises the temperature until it reaches the set temperature S, and the hot water is supplied to the hot water tap (85) and the bathtub (81).
【００３４】一方、上記ステップ(ST7)を実行したとき
に湯温センサ(19)の検知温度が混合目標温度ＭＴを超え
ている場合は、ステップ(ST9)〜ステップ(ST11)が実行
され、これにより、湯水混合器(20)で混合された混合水
の温度が混合目標温度ＭＴになるように、湯水混合器(2
0)の冷水調節弁(24)や温水調節弁(25)の開度が調節され
る。即ち、湯水混合器(20)から流出する混合水の温度を
混合水温センサ(33)で監視し、該混合水温センサ(33)の
検知温度が上記混合目標温度ＭＴを超える場合はステッ
プ(ST11)で温水回路(14)からの温水の混合割合が減少す
るように冷水調節弁(24)や温水調節弁(25)の開度が調節
される。又、混合水温センサ(33)の検知温度が上記混合
目標温度ＭＴ未満の場合はステップ(ST10)で温水回路(1
4)からの温水の混合割合が増加するように冷水調節弁(2
4)や温水調節弁(25)の開度が調節される。尚、本実施の
形態では、上記ステップ(ST9)〜ステップ(ST11)の制御
を実行するマイクロコンピュータの機能部が既述混合器
制御手段に対応する。On the other hand, when the temperature detected by the hot water temperature sensor (19) exceeds the mixing target temperature MT when the above step (ST7) is executed, steps (ST9) to (ST11) are executed, and The hot water mixer (2) is adjusted so that the temperature of the mixed water mixed by the hot water mixer (20) reaches the mixing target temperature MT.
The openings of the cold water control valve (24) and the hot water control valve (25) of 0) are adjusted. That is, the temperature of the mixed water flowing out from the hot water mixer (20) is monitored by the mixed water temperature sensor (33), and if the temperature detected by the mixed water temperature sensor (33) exceeds the target mixing temperature MT, step (ST11). The opening degrees of the cold water control valve (24) and the hot water control valve (25) are adjusted so that the mixing ratio of the hot water from the hot water circuit (14) is reduced. If the temperature detected by the mixed water temperature sensor (33) is lower than the mixed target temperature MT, the hot water circuit (1
The cold water control valve (2
4) and the opening of the hot water control valve (25) are adjusted. In the present embodiment, the functional unit of the microcomputer that executes the control of steps (ST9) to (ST11) corresponds to the mixer control means.
【００３５】これにより、混合目標温度ＭＴの混合水が
給湯器用湯水混合ユニット(1)から給湯器(7)に供給され
る。すると、給湯器(7)に組み込まれたガスバーナが最
小燃焼量で燃焼し、これにより、上記混合目標温度ＭＴ
の混合水が給湯器(7)で最小上昇温度ΔＴだけ加熱昇温
されて設定温度Ｓの温水が出湯蛇口(85)や浴槽(81)に供
給される。As a result, the mixed water having the target mixing temperature MT is supplied from the hot water / water mixing unit (1) for the water heater to the water heater (7). Then, the gas burner incorporated in the water heater (7) combusts with the minimum combustion amount, whereby the mixing target temperature MT
The mixed water is heated by the water heater (7) by the minimum rise temperature ΔT, and hot water of the set temperature S is supplied to the tap tap (85) and the bathtub (81).
【００３６】一方、既述ステップ(ST4)を実行したとき
に、湯温センサ(19)の検知温度が（設定温度Ｓ＋１℃）
以上の場合は、ステップ(ST12)〜ステップ(ST14)が実行
され、これにより、湯水混合器(20)で混合された混合水
の温度が設定温度Ｓになるように、湯水混合器(20)の冷
水調節弁(24)や温水調節弁(25)の開度が調節される。On the other hand, when the above-mentioned step (ST4) is executed, the temperature detected by the hot water temperature sensor (19) is (set temperature S + 1 ° C.).
In the above case, steps (ST12) to (ST14) are executed, so that the temperature of the mixed water mixed in the hot water mixer (20) becomes the set temperature S, so that the hot water mixer (20) The openings of the cold water control valve (24) and the hot water control valve (25) are adjusted.
【００３７】即ち、湯水混合器(20)から流出する混合水
の温度を混合水温センサ(33)で監視し、該混合水温セン
サ(33)の検知温度が上記設定温度Ｓを超える場合はステ
ップ(ST14)で温水回路(14)からの温水の混合割合が減少
するように冷水調節弁(24)や温水調節弁(25)の開度が調
節される。又、混合水温センサ(33)の検知温度が上記設
定温度Ｓ未満の場合はステップ(ST13)で温水回路(14)か
らの温水の混合割合が減少するように冷水調節弁(24)や
温水調節弁(25)の開度が調節される。これにより、設定
温度Ｓの混合水が給湯器用湯水混合ユニット(1)から給
湯器(7)を経て(18)や出湯蛇口(85)に供給される。That is, the temperature of the mixed water flowing out from the hot water mixer (20) is monitored by the mixed water temperature sensor (33), and if the temperature detected by the mixed water temperature sensor (33) exceeds the set temperature S, the step ( In ST14), the openings of the cold water control valve (24) and the hot water control valve (25) are adjusted so that the mixing ratio of the hot water from the hot water circuit (14) is reduced. When the temperature detected by the mixed water temperature sensor (33) is lower than the set temperature S, the cold water control valve (24) and the hot water control valve are adjusted so that the mixing ratio of the hot water from the hot water circuit (14) is decreased in step (ST13). The opening of the valve (25) is adjusted. As a result, the mixed water having the set temperature S is supplied from the hot water / water mixing unit (1) for the hot water supply device to the hot water supply device (7) (18) and the hot water tap (85).
【００３８】尚、本実施の形態では、給湯器用湯水混合
ユニット(1)のバイパス回路(28)に設けられた常開電磁
弁(31)は、給湯中に停電等の異常状態が発生すると全開
状態になり、これにより、上記常開電磁弁(31)から大量
の冷水が混合水回路(29)に流入する。従って、火傷等の
危険がある高温水が出湯蛇口(85)や浴槽(81)に供給され
る心配がない。In the present embodiment, the normally open solenoid valve (31) provided in the bypass circuit (28) of the hot water mixing unit (1) for the water heater is fully opened when an abnormal state such as a power failure occurs during hot water supply. This brings about a state, whereby a large amount of cold water flows into the mixed water circuit (29) from the normally open solenoid valve (31). Therefore, there is no concern that high-temperature water with a risk of burns or the like will be supplied to the hot water tap (85) or the bathtub (81).
【００３９】又、本実施の形態では、水量センサ(32)は
混合水回路(29)に設けられているが、給湯器本体(70)に
組み込まれている水量センサの出力を利用して上記各演
算を実行してもよい。この場合は、給湯器用湯水混合ユ
ニット(1)に既述水量センサを設ける必要がない。Further, in the present embodiment, the water amount sensor (32) is provided in the mixed water circuit (29), but the output of the water amount sensor incorporated in the water heater main body (70) is used to make the above. Each operation may be executed. In this case, there is no need to provide the water amount sensor described above in the hot water mixing unit (1) for the water heater.
【００４０】又、上記実施の形態では、温水供給装置と
して、自然エネルギーを利用した太陽熱温水器(5)を例
示したが、該太陽熱温水器(5)以外に、各種の廃熱を利用
した種々の温水供給装置を給湯器用湯水混合ユニット
(1)に接続して使用することができる。Further, in the above-mentioned embodiment, the solar water heater (5) utilizing natural energy is exemplified as the hot water supply device, but in addition to the solar water heater (5), various kinds of waste heat are used. Hot water supply device for hot water mixing unit for water heater
Can be used by connecting to (1).
【図１】本発明の実施の形態を説明する給湯システムの
概念図FIG. 1 is a conceptual diagram of a hot water supply system illustrating an embodiment of the present invention.
【図２】本発明の実施の形態に係る給湯器用湯水混合ユ
ニット(1)の動作説明図FIG. 2 is an operation explanatory view of the hot and cold water mixing unit (1) for the water heater according to the embodiment of the present invention.
(1)・・・給湯器用湯水混合ユニット (5)・・・太陽熱温水器 (7)・・・給湯器 (14)・・・温水回路 (15)・・・冷水回路 (19)・・・湯温センサ (20)・・・湯水混合器 (29)・・・混合水回路 (1) ・ ・ ・ Hot water mixing unit for water heater (5) ... Solar water heater (7) ・ ・ ・ Water heater (14) ・ ・ ・ Hot water circuit (15) ・ ・ ・ Cold water circuit (19) ・ ・ ・ Hot water temperature sensor (20) ・ ・ ・ Hot water mixer (29) ・ ・ ・ Mixed water circuit
フロントページの続き (72)発明者 安藤 正和 名古屋市中川区福住町２番26号 リンナイ 株式会社内 (72)発明者 鈴木 幸弘 名古屋市中川区福住町２番26号 リンナイ 株式会社内Continued front page (72) Inventor Masakazu Ando Rinnai 2-26, Fukuzumi-cho, Nakagawa-ku, Nagoya-shi Within the corporation (72) Inventor Yukihiro Suzuki Rinnai 2-26, Fukuzumi-cho, Nakagawa-ku, Nagoya-shi Within the corporation
Claims (2)
接続口となった冷水回路と、上流端が温水供給装置から
の温水が流れる上流側温水回路に接続される温水配管接
続口となり且つ湯温センサが設けられた温水回路と、前
記冷水回路と前記温水回路が合流する合流点からその下
流側の給湯器接続口に繋がり且つ混合水温センサが設け
られた混合水回路と、前記合流点に於ける前記冷水と温
水との混合割合を調節する湯水混合器とを具備し、前記
湯温センサの検知温度が前記給湯器接続口に配管接続さ
れる給湯器に備えられた湯温設定器の設定温度より高い
場合は、前記混合水温センサの検知温度が前記設定温度
になるように前記湯水混合器の動作が制御され、前記湯
温センサの検知温度が前記設定温度より低い場合は、前
記混合水温センサの検知温度が前記設定温度より低い混
合目標温度になるように前記湯水混合器の動作が制御さ
れる、給湯器用湯水混合ユニットに於いて、 最小燃焼量で燃焼する前記給湯器の最小発熱量Ｗminを
前記混合水の流量Ｑで割り算して最小上昇温度ΔＴを求
める最小上昇温度演算手段と、 前記最小上昇温度ΔＴを前記設定温度Ｓから減算して混
合目標温度ＭＴを求める目標温度演算手段と、 前記湯温センサの検知温度が前記設定温度Ｓより低い場
合は、前記混合水温センサの検知温度が前記混合目標温
度ＭＴに等しくなるように前記湯水混合器の動作を制御
する混合器制御手段を具備する、給湯器用湯水混合ユニ
ット。1. A cold water circuit having an upstream end serving as a water supply pipe connection port connected to a water supply circuit, and an upstream end serving as a hot water pipe connection port connected to an upstream hot water circuit through which hot water from a hot water supply device flows. A hot water circuit provided with a hot water temperature sensor, a mixed water circuit provided with a mixed water temperature sensor which is connected to a water heater connection port on the downstream side from a joining point where the cold water circuit and the hot water circuit join, and the joining point Hot water mixer for adjusting the mixing ratio of the cold water and the hot water in, and a hot water temperature setting device provided in a hot water supply device in which a temperature detected by the hot water temperature sensor is pipe-connected to the hot water supply connection port. If the temperature is higher than the set temperature of, the operation of the hot water mixer is controlled so that the detected temperature of the mixed water temperature sensor is the set temperature, if the detected temperature of the hot water temperature sensor is lower than the set temperature, Of mixed water temperature sensor In the hot and cold water mixing unit for a water heater, the operation of the hot and cold water mixer is controlled so that the detected temperature becomes a mixing target temperature lower than the set temperature. Minimum rise temperature calculation means for obtaining a minimum rise temperature ΔT by dividing by the flow rate Q of the mixed water; target temperature calculation means for subtracting the minimum rise temperature ΔT from the set temperature S to obtain a mixed target temperature MT; When the temperature detected by the hot water temperature sensor is lower than the set temperature S, a mixer control means is provided for controlling the operation of the hot water mixer so that the temperature detected by the mixed water temperature sensor becomes equal to the target mixing temperature MT. , Hot water mixing unit for water heater.
ットに於いて、 前記混合水の流量Ｑを検知する水量センサが前記混合水
回路に設けられている、給湯器用湯水混合ユニット。2. The hot water / water mixing unit for a water heater according to claim 1, wherein a water amount sensor for detecting a flow rate Q of the mixed water is provided in the mixed water circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002108348A JP2003083609A (en) | 2001-06-26 | 2002-04-10 | Hot water mixing unit for hot water feeder |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001-192971 | 2001-06-26 | ||
| JP2001192971 | 2001-06-26 | ||
| JP2002108348A JP2003083609A (en) | 2001-06-26 | 2002-04-10 | Hot water mixing unit for hot water feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003083609A true JP2003083609A (en) | 2003-03-19 |
Family
ID=26617567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002108348A Pending JP2003083609A (en) | 2001-06-26 | 2002-04-10 | Hot water mixing unit for hot water feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003083609A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006214620A (en) * | 2005-02-02 | 2006-08-17 | Rinnai Corp | Hot-water supply system |
| JP2010164267A (en) * | 2009-01-16 | 2010-07-29 | Chofu Seisakusho Co Ltd | Solar heat water heater and method of filling bath with hot water using the same |
| JP2011117634A (en) * | 2009-12-01 | 2011-06-16 | Kokusai Gijutsu Kaihatsu Co Ltd | Solar system |
| JP2015534032A (en) * | 2012-09-28 | 2015-11-26 | キュンドン ナビエン カンパニー リミテッドＫｙｕｎｇｄｏｎｇ Ｎａｖｉｅｎ Ｃｏ．，Ｌｔｄ． | Hot water temperature control structure of exhaust heat recovery system using three-way valve or mixing valve, and hot water temperature control structure of exhaust heat recovery system using hot water tank heat exchanger |
-
2002
- 2002-04-10 JP JP2002108348A patent/JP2003083609A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006214620A (en) * | 2005-02-02 | 2006-08-17 | Rinnai Corp | Hot-water supply system |
| JP4546273B2 (en) * | 2005-02-02 | 2010-09-15 | リンナイ株式会社 | Hot water system |
| JP2010164267A (en) * | 2009-01-16 | 2010-07-29 | Chofu Seisakusho Co Ltd | Solar heat water heater and method of filling bath with hot water using the same |
| JP2011117634A (en) * | 2009-12-01 | 2011-06-16 | Kokusai Gijutsu Kaihatsu Co Ltd | Solar system |
| JP2015534032A (en) * | 2012-09-28 | 2015-11-26 | キュンドン ナビエン カンパニー リミテッドＫｙｕｎｇｄｏｎｇ Ｎａｖｉｅｎ Ｃｏ．，Ｌｔｄ． | Hot water temperature control structure of exhaust heat recovery system using three-way valve or mixing valve, and hot water temperature control structure of exhaust heat recovery system using hot water tank heat exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2011149673A (en) | Solar heat hot water supply system | |
| JP5577109B2 (en) | Solar water heater | |
| JP2003083609A (en) | Hot water mixing unit for hot water feeder | |
| KR20110133073A (en) | Heat pipe boiler and heating control system and circulating controller | |
| JP3718651B2 (en) | Hot water mixing unit for water heater | |
| JP5061153B2 (en) | Hot water storage hot water supply system and cogeneration system | |
| JP4682490B2 (en) | Hot water system | |
| JP2003194357A (en) | Hot water/cold water mixing unit for hot water supplier | |
| JP2003254598A (en) | Water/hot water mixing unit for hot water supplier | |
| JP2003106656A (en) | Hot/cold water mixing unit for water heater | |
| JP3718654B2 (en) | Hot water mixing unit | |
| JP5012408B2 (en) | Hot water storage water heater | |
| JP3714209B2 (en) | Hot water system | |
| JP2002349956A (en) | Method for controlling fed-out hot water temperature of hot-water feeding apparatus utilizing solar heat | |
| JP2017172949A (en) | Hot water heating device | |
| JP3794667B2 (en) | Hot water system | |
| JP3465533B2 (en) | Auxiliary water heater connection unit and water heater with solar water heater function | |
| JP4867274B2 (en) | Water heater | |
| JP3728266B2 (en) | Hot water mixing unit for water heater and water heater | |
| JP2002257416A (en) | Auxiliary heat source apparatus with over-heated hot water supply prohibitive function and solar heat hot- water supply apparatus | |
| JP3714216B2 (en) | Hot water system | |
| JP3720742B2 (en) | Hot water mixing unit for water heater | |
| JP2008185302A (en) | Hot water supply device | |
| JP4784266B2 (en) | Water heater | |
| JP2003166724A (en) | Hot water and cold water mixing unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040827 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20050512 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20050524 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20050721 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20050830 |