JP2015209984A - Hot water mixing device - Google Patents

Hot water mixing device Download PDF

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JP2015209984A
JP2015209984A JP2014089580A JP2014089580A JP2015209984A JP 2015209984 A JP2015209984 A JP 2015209984A JP 2014089580 A JP2014089580 A JP 2014089580A JP 2014089580 A JP2014089580 A JP 2014089580A JP 2015209984 A JP2015209984 A JP 2015209984A
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water
pressure
hot water
passage
hot
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JP6299382B2 (en
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文彦 矢部
Fumihiko Yabe
文彦 矢部
橋詰 康人
Yasuto Hashizume
康人 橋詰
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Noritz Corp
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers

Abstract

PROBLEM TO BE SOLVED: To provide, in a hot water mixing device, one unit in which a high hot water pressure and a water supply pressure can be detected at a low cost and easily; and the other unit enabling it to be easily judged whether or not a pressure difference between the high hot water pressure and the water supply pressure is kept in a set range.SOLUTION: A hot water mixing device 1 in which hot temperature water got from a hot water passage 12 and low temperature water got from a water supply passage 11 are mixed to each other through a mixing valve 13 to cause hot water of set temperature to be fed is constituted in such a way that the device 1 has a pressure sensor 21 for use in detecting a water pressure installed at a hot water discharging passage 14 at a downstream side of the mixing valve 13, a water supplying pressure of low temperature water flowing at the hot water discharging passage 14 is detected under a state in which the hot water passage 12 at the mixing valve 13 is closed and at the same time a high hot water pressure of high hot water flowing at the hot water discharging passage 14 is detected under a state in which the water supply passage 11 of the mixing valve 13 is closed, and the device 1 has a control unit 16 for judging it, on the basis of these detected signals, whether or not a pressure difference between the water supply pressure and the high hot water pressure is kept in a set range and at the same time for informing this result of judgement through informing means.

Description

本発明は湯水混合装置に関し、特に太陽熱温水器から供給される高温水の圧力(水頭圧)と上水源から供給される低温水の給水圧力とを夫々検出して圧力差が設定範囲内か否かを判定可能なものに関する。   The present invention relates to a hot and cold water mixing device, and in particular, detects the pressure of high-temperature water (water head pressure) supplied from a solar water heater and the supply pressure of low-temperature water supplied from a water supply source to determine whether the pressure difference is within a set range. It relates to what can be determined.

従来から、太陽熱を利用して水を加熱する太陽熱温水器が広く一般に普及している。この太陽熱温水器においては、屋根上に集熱パネルと貯留タンクとが一体的に設置されたタンク一体型、屋根上に集熱パネルが設置され、地上に貯留タンクが設置されたタンク分離型等が実用に供されている。タンク一体型の太陽熱温水器では、水は集熱パネルと貯留タンクとの間を対流により自然循環することで加熱される。   Conventionally, solar water heaters that use solar heat to heat water have been widely used. In this solar water heater, a tank integrated type in which a heat collecting panel and a storage tank are integrally installed on the roof, a tank separation type in which a heat collecting panel is installed on the roof, and a storage tank is installed on the ground, etc. Is in practical use. In the tank-integrated solar water heater, water is heated by natural circulation between the heat collection panel and the storage tank by convection.

上記の太陽熱温水器において、集熱パネルで加熱されて貯留タンクに貯留された高温水は、地上側に設置された給湯機(補助熱源機)を介して出湯される。一般的に、太陽熱温水器と給湯機との間には、太陽熱温水器で加熱された高温水を、上水源から供給される低温水と混合して設定温度に温度調整した後に給湯機へ送る湯水混合装置が設置されている。この種の高温水と低温水とを混合する為の湯水混合装置は、種々の文献で開示されている。   In the solar water heater described above, the high-temperature water heated by the heat collecting panel and stored in the storage tank is discharged through a hot water supply device (auxiliary heat source device) installed on the ground side. Generally, between the solar water heater and the hot water heater, the high temperature water heated by the solar water heater is mixed with the low temperature water supplied from the water source to adjust the temperature to the set temperature, and then sent to the water heater. A hot water mixing device is installed. Various hot water and water mixing devices for mixing this type of high temperature water and low temperature water are disclosed in various documents.

例えば、特許文献1には、給湯機で加熱された高温水を、上水源からの低温水と混合する湯水混合装置が開示されている。この特許文献1の湯水混合装置は、給湯機と混合弁とを接続する給湯路と上水源と混合弁とを接続する給水路に圧力センサを夫々設置し、これら圧力センサによって、給湯路の高温水圧力と給水路の給水圧力を夫々検出し、この圧力比の変化量に応じて混合弁を調整することで混合湯温度の変動を抑える機能を備えている。   For example, Patent Literature 1 discloses a hot water mixing apparatus that mixes high temperature water heated by a hot water supply device with low temperature water from a water source. In this hot water mixing apparatus of Patent Document 1, a pressure sensor is installed in each of a hot water supply channel connecting a hot water supply device and a mixing valve, and a water supply channel connecting a water supply source and a mixing valve. It has a function of detecting the water pressure and the water supply pressure in the water supply channel, and adjusting the mixing valve in accordance with the amount of change in the pressure ratio to suppress fluctuations in the mixed hot water temperature.

特開平5−40531号公報JP-A-5-40531

しかし、太陽熱温水器は屋根上に設置される構造上、その設置高さ位置は建物に応じて変化するが、湯水混合装置は、屋根より低い地上側に設置される場合が多いので、太陽熱温水器から湯水混合装置に供給される高温水の圧力は、施工現場に応じて変化する。一方、上水源から供給される低温水の給水圧力は、湯水混合装置の内部に予め設置された減圧弁によって所定の圧力に減圧される場合が多いので、施工現場の影響は受け難い。   However, solar water heaters are installed on the roof, and the installation height varies depending on the building, but hot water mixing devices are often installed on the ground side lower than the roof. The pressure of the high temperature water supplied from the vessel to the hot water mixing device varies depending on the construction site. On the other hand, the supply pressure of the low-temperature water supplied from the water supply source is often reduced to a predetermined pressure by a pressure reducing valve installed in advance in the hot and cold water mixing device, and is not easily affected by the construction site.

このため、施工現場によっては、湯水混合装置の混合弁に供給される低温水の給水圧力と高温水の高温水圧力との圧力差が大きくなり、混合弁の混合性能が悪化して不具合が生じるという問題がある。従来では、高温水圧力と給水圧力との圧力差が混合弁に適した範囲内にない場合、作業員が、施工された配管を外して、圧力測定器を用いて手動で各圧力を測定する必要があるので、作業に手間がかかり、コスト高になるという問題がある。   For this reason, depending on the construction site, the pressure difference between the supply pressure of the low-temperature water supplied to the mixing valve of the hot-water mixing device and the high-temperature water pressure of the high-temperature water becomes large, and the mixing performance of the mixing valve deteriorates, resulting in problems. There is a problem. Conventionally, when the pressure difference between the high-temperature water pressure and the feed water pressure is not within the range suitable for the mixing valve, the worker removes the installed pipe and manually measures each pressure using a pressure measuring instrument. Since it is necessary, there is a problem that the work is troublesome and the cost is high.

また、特許文献1の湯水混合装置は、給水圧力と高温水圧力とを専用の圧力センサで夫々検出しているが、圧力センサは高価なものであるので、湯水混合装置に2つの圧力センサを組み込むと、製作コストが増加してしまうという問題がある。この特許文献1の湯水混合手段は、給湯機の下流側に設置され、給湯運転時に2つの圧力センサによる検出信号に基づいて混合弁を常時制御するが、施工時やメンテナンス時に、太陽熱温水器からの高温水圧力と上水源からの給水圧力との圧力差を判定する機能は備えていない。   Moreover, although the hot water mixing apparatus of patent document 1 has each detected the feed water pressure and the high temperature water pressure with the pressure sensor for exclusive use, since a pressure sensor is expensive, two pressure sensors are added to the hot water mixing apparatus. If incorporated, there is a problem that the production cost increases. The hot water mixing means of this patent document 1 is installed on the downstream side of the hot water heater, and always controls the mixing valve based on detection signals from the two pressure sensors during hot water supply operation, but from the solar water heater during construction and maintenance The function of judging the pressure difference between the hot water pressure of the water and the feed water pressure from the water source is not provided.

本発明の目的は、湯水混合装置において、高温水圧力と給水圧力とを低コストで且つ容易に検出可能なもの、高温水圧力と給水圧力との圧力差が設定範囲内に収まっているか否かを容易に判定可能なもの、等を提供することである。   An object of the present invention is to provide a hot and cold water mixing device that can detect a high-temperature water pressure and a feed water pressure at low cost and easily, and whether or not the pressure difference between the high-temperature water pressure and the feed water pressure is within a set range. It is possible to provide a device that can easily determine the above.

請求項1の湯水混合装置は、温水通路からの高温水と給水通路からの低温水とを湯水混合部を介して混合して設定温度の温水を出湯する湯水混合装置において、前記湯水混合部の下流側の出湯通路に水圧を検出する為の圧力検出手段を設け、前記圧力検出手段によって、前記湯水混合部の前記温水通路側を閉止した状態で前記出湯通路を流れる前記低温水の給水圧力を検出すると共に前記湯水混合部の前記給水通路側を閉止した状態で前記出湯通路を流れる前記高温水の高温水圧力を検出し、これら検出信号に基づいて前記給水圧力と前記高温水圧力との圧力差が設定範囲内にあるか否かの判定を行うと共にこの判定結果を報知手段を介して報知する圧力差判定制御手段を備えたことを特徴としている。   The hot and cold mixing device according to claim 1 is a hot and cold mixing device that mixes hot water from a hot water passage and low temperature water from a water supply passage through a hot and cold mixing portion to discharge hot water at a set temperature. Pressure detection means for detecting water pressure is provided in the downstream hot water passage, and the pressure detection means is used to adjust the supply pressure of the low-temperature water flowing through the hot water passage in a state where the hot water passage side of the hot water mixing section is closed. Detecting and detecting the high-temperature water pressure of the high-temperature water flowing through the hot-water supply passage in a state where the water-supply passage side of the hot-water mixing unit is closed, and the pressure between the water supply pressure and the high-temperature water pressure based on these detection signals A pressure difference determination control means for determining whether or not the difference is within a set range and notifying the determination result via a notification means is provided.

請求項2の湯水混合装置は、請求項1の発明において、前記温水通路は、屋根上に設置された太陽熱温水器の貯留タンクに連結されていることを特徴としている。   According to a second aspect of the present invention, there is provided the hot water mixing apparatus according to the first aspect, wherein the hot water passage is connected to a storage tank of a solar water heater installed on the roof.

請求項1の発明によれば、湯水混合装置は、湯水混合部の下流側の出湯通路に設けられた圧力検出手段によって給水圧力と高温水圧力とを夫々検出し、給水圧力と高温水圧力との圧力差が設定範囲内にあるか否かの判定を行うと共にこの判定結果を報知手段を介して報知する圧力差判定制御手段を備えたので、施工時やメンテナンス時に、圧力差判定制御手段によって、給水圧力と高温水圧力との圧力差が設定範囲内にあるか否かを判定し、圧力差に異常があると判定した場合には、作業員は減圧弁やオリフィスを利用して圧力差を適切に調整することができる。   According to the first aspect of the present invention, the hot and cold water mixing device detects the feed water pressure and the high temperature water pressure by the pressure detecting means provided in the outlet hot water passage on the downstream side of the hot water and water mixing section, respectively. The pressure difference determination control means for determining whether or not the pressure difference is within the set range and notifying the determination result via the notification means is provided by the pressure difference determination control means during construction or maintenance. If the pressure difference between the feed water pressure and the high-temperature water pressure is within the set range, and if it is determined that the pressure difference is abnormal, the worker uses the pressure reducing valve or orifice to Can be adjusted appropriately.

従って、圧力検出手段によって給水圧力と高温水圧力とを夫々検出することで、作業員が、施工された配管を外して、圧力計測器を使用して各圧力を測定する必要がなくなるので、容易な方法で且つ容易な構造でもって高温水圧力及び給水圧力の両方の検出を実現できる。判定結果が報知手段を介して報知されるので、作業員は、圧力差が設定範囲内にあるか否かを容易に判定することができる。   Therefore, by detecting the water supply pressure and the high-temperature water pressure respectively by the pressure detection means, it is not necessary for the operator to remove the installed piping and measure each pressure using a pressure measuring instrument. It is possible to realize detection of both high-temperature water pressure and feed water pressure with a simple method and an easy structure. Since the determination result is notified through the notification means, the worker can easily determine whether or not the pressure difference is within the set range.

また、湯水混合部の下流側の出湯通路に圧力検出手段を設置して、温水通路と給水通路を交互に閉止することで、給水圧力と高温水圧力の両方の圧力を検出するので、給水通路と温水通路に専用の圧力検出手段を夫々設置する場合と比較して、低コストで給水圧力及び高温水圧力の検出を行うことができる。   In addition, by installing pressure detection means in the hot water passage downstream of the hot water mixing section and alternately closing the hot water passage and the feed water passage, both the feed water pressure and the hot water pressure are detected. Compared with the case where dedicated pressure detection means are respectively installed in the hot water passage, the feed water pressure and the high temperature water pressure can be detected at a low cost.

請求項2の発明によれば、温水通路は、屋根上に設置された太陽熱温水器の貯留タンクに連結されているので、施工現場に応じて極端に変化する太陽熱温水器の高温水の高温水圧力の検出に対応した湯水混合装置を提供可能である。   According to the invention of claim 2, since the hot water passage is connected to the storage tank of the solar water heater installed on the roof, the hot water of the hot water of the solar water heater that changes extremely according to the construction site It is possible to provide a hot and cold water mixing device corresponding to pressure detection.

本発明の実施例に係る湯水混合装置の概略構成図である。It is a schematic block diagram of the hot water mixing device which concerns on the Example of this invention. 圧力差判定制御のフローチャートである。It is a flowchart of pressure difference determination control.

以下、本発明を実施するための形態について実施例に基づいて説明する。   Hereinafter, modes for carrying out the present invention will be described based on examples.

先ず、本発明の湯水混合装置1の設置状態について簡単に説明する。
図1に示すように、湯水混合装置1は、太陽熱温水器2で加熱された高温水を、上水源から供給される低温水と混合して設定温度に温度調整した後に給湯機3へ送り、所望の給湯栓9から給湯するものであり、屋根上に設置された太陽熱温水器2と地上側に設置された給湯機3との間に設置されている。
First, the installation state of the hot and cold water mixing apparatus 1 of the present invention will be briefly described.
As shown in FIG. 1, the hot water mixing apparatus 1 mixes the high temperature water heated by the solar water heater 2 with the low temperature water supplied from the water supply source, adjusts the temperature to the set temperature, and then sends the hot water to the water heater 3. Hot water is supplied from a desired hot-water tap 9 and is installed between the solar water heater 2 installed on the roof and the water heater 3 installed on the ground side.

尚、太陽熱温水器2は、集熱パネル2aと貯留タンク2bとを備え、これらが一体的に構成された公知のタンク一体型の太陽熱温水器2であり、給湯機3は、バーナーや熱交換器等を内蔵した公知の燃焼式の給湯機である。太陽熱温水器2の貯留タンク2bに上水源から延びる外部給水通路4が接続され、太陽熱温水器2の貯留タンク2bから延びる外部温水通路5が湯水混合装置1に接続され、湯水混合装置1から延びる外部出湯通路6が給湯機3に接続されている。   The solar water heater 2 is a known tank-integrated solar water heater 2 including a heat collecting panel 2a and a storage tank 2b, which are integrally configured. The water heater 3 is a burner or heat exchanger. It is a well-known combustion type hot water supply device incorporating a heater and the like. An external water supply passage 4 extending from the water supply source is connected to the storage tank 2 b of the solar water heater 2, and an external hot water passage 5 extending from the storage tank 2 b of the solar water heater 2 is connected to the hot water mixing device 1 and extends from the hot water mixing device 1. An external hot water passage 6 is connected to the hot water heater 3.

次に、湯水混合装置1の具体的な構造について説明する。
図1に示すように、湯水混合装置1は、低温水が流れる給水通路11、高温水が流れる温水通路12、高温水と低温水とを混合する為の混合弁13、設定温度の混合湯水が流れる出湯通路14、混合湯水を給湯機3に送る為の循環ポンプ15、制御ユニット16等を備え、これらは外装ケース17内に収納されている。
Next, a specific structure of the hot water / mixer 1 will be described.
As shown in FIG. 1, a hot water mixing apparatus 1 includes a water supply passage 11 through which low temperature water flows, a hot water passage 12 through which high temperature water flows, a mixing valve 13 for mixing high temperature water and low temperature water, and mixed hot water at a set temperature. A flowing hot water passage 14, a circulation pump 15 for sending the mixed hot water to the hot water heater 3, a control unit 16, and the like are provided, and these are housed in an exterior case 17.

給水通路11は、上水源から加圧シスターンを介して供給される低温水を混合弁13に供給するものであり、給水通路11の上流端がフィルタ付接続継手11aを介して外部給水通路7の下流端に接続され、給水通路11の下流端が混合弁13に接続されている。給水通路11には、上流側から下流側に向かって、凍結防止用ヒータ11b、逆止弁11c、減圧弁11d、温度センサ11eが順に設置されている。減圧弁11dは、上水源から供給される低温水を予め設定された設定値(例えば80kPa)に減圧する為に給水通路11に設置されている。   The water supply passage 11 supplies the mixing valve 13 with low-temperature water supplied from a water supply source via a pressurized systern, and the upstream end of the water supply passage 11 is connected to the external water supply passage 7 via a connection joint 11a with a filter. Connected to the downstream end, the downstream end of the water supply passage 11 is connected to the mixing valve 13. In the water supply passage 11, a freezing prevention heater 11b, a check valve 11c, a pressure reducing valve 11d, and a temperature sensor 11e are installed in this order from the upstream side to the downstream side. The pressure reducing valve 11d is installed in the water supply passage 11 to reduce the low temperature water supplied from the water supply source to a preset value (for example, 80 kPa).

温水通路12は、太陽熱温水器2から供給される高温水を混合弁13に供給するものであり、温水通路12の上流端がフィルタ付接続継手12aを介して外部温水通路5の下流端に接続され、温水通路12の下流端が混合弁13に接続されている。温水通路12には、上流側から下流側に向かって、凍結防止用ヒータ12b、逆止弁12c、温度センサ12dが順に設置されている。   The hot water passage 12 supplies high-temperature water supplied from the solar water heater 2 to the mixing valve 13, and the upstream end of the hot water passage 12 is connected to the downstream end of the external hot water passage 5 via a connection joint 12 a with a filter. The downstream end of the hot water passage 12 is connected to the mixing valve 13. In the hot water passage 12, an antifreezing heater 12b, a check valve 12c, and a temperature sensor 12d are installed in this order from the upstream side to the downstream side.

混合弁13(湯水混合部に相当する)は、出湯温度が指令温度(設定温度)になるように高温水と低温水の混合比を制御する公知の混合弁である。この混合弁13は、高温水圧力と低温水圧力との圧力差が、例えば50kPaの範囲内であれば設定温度の混合湯水を出湯可能に構成されている。   The mixing valve 13 (corresponding to the hot water mixing section) is a known mixing valve that controls the mixing ratio of high temperature water and low temperature water so that the temperature of the hot water becomes the command temperature (set temperature). The mixing valve 13 is configured to discharge hot water at a set temperature if the pressure difference between the high-temperature water pressure and the low-temperature water pressure is within a range of 50 kPa, for example.

出湯通路14は、混合弁13から設定温度の混合湯水を給湯機3に供給するものであり、出湯通路14の上流端が混合弁13に接続され、出湯通路14の下流端が排水栓付接続継手14aを介して外部出湯通路6の下流端に接続されている。混合弁13の下流側の出湯通路14には、上流側から下流側に向かって、流量センサ14b、温度センサ14c、混合湯水を給湯機3に送る為の循環ポンプ15、逆止弁14d、水圧を検出する為の圧力センサ21(圧力検出手段に相当する)、凍結防止用ヒータ14eが順に設置されている。   The hot water passage 14 supplies mixed hot water having a set temperature from the mixing valve 13 to the hot water supply device 3, the upstream end of the hot water passage 14 is connected to the mixing valve 13, and the downstream end of the hot water passage 14 is connected with a drain plug. It is connected to the downstream end of the external hot water passage 6 through a joint 14a. In the hot water supply passage 14 on the downstream side of the mixing valve 13, a flow rate sensor 14 b, a temperature sensor 14 c, a circulation pump 15 for sending the mixed hot water to the hot water heater 3, a check valve 14 d, water pressure from the upstream side to the downstream side A pressure sensor 21 (corresponding to a pressure detection means) for detecting the above and an anti-freezing heater 14e are sequentially installed.

給水通路11の減圧弁11dの下流側から分岐したバイパス通路18が、出湯通路14の循環ポンプ15の上流側に接続されている。このバイパス通路18には、高温出湯回避用の電磁弁19が設置されている。   A bypass passage 18 branched from the downstream side of the pressure reducing valve 11 d of the water supply passage 11 is connected to the upstream side of the circulation pump 15 of the hot water passage 14. The bypass passage 18 is provided with a solenoid valve 19 for avoiding high temperature hot water.

このように、湯水混合装置1は、太陽熱温水器2に連結する温水通路12からの高温水と上水源に連結する給水通路11からの低温水とを混合弁13を介して混合して設定温度の温水を給湯機3に出湯するように構成されている。   As described above, the hot water mixing apparatus 1 mixes the high temperature water from the hot water passage 12 connected to the solar water heater 2 and the low temperature water from the water supply passage 11 connected to the water supply source through the mixing valve 13 to set temperature. The hot water is discharged to the water heater 3.

次に、制御ユニット16について説明する。
この湯水混合装置1は、制御ユニット16によって制御される。各種のセンサの検出信号が制御ユニット16に送信され、この制御ユニット16により、湯水混合装置1の動作、循環ポンプ15の作動・停止、各種の弁の開閉状態の切り換え及び開度調整等を制御し、各種運転(給湯運転、圧力差判定運転等)を実行する。
Next, the control unit 16 will be described.
The hot water / water mixing device 1 is controlled by a control unit 16. Detection signals of various sensors are transmitted to the control unit 16, and the control unit 16 controls the operation of the hot and cold water mixing device 1, the operation / stop of the circulation pump 15, the switching of the open / close states of various valves, and the opening degree adjustment. Then, various operations (hot water supply operation, pressure difference determination operation, etc.) are executed.

制御ユニット16は、ユーザーが操作可能な操作リモコン8との間で、給湯機3の給湯機側制御ユニット3aを介してデータ通信可能であり、操作リモコン8のスイッチ操作により各種の運転が設定されると、その指令信号が操作リモコン8から制御ユニット16に送信される。例えば、操作リモコン8のスイッチ操作により目標給湯設定温度が設定されると、その目標給湯設定温度データが操作リモコン8から制御ユニット16に送信される。尚、この制御ユニット16が、圧力差判定制御手段に相当する。   The control unit 16 can communicate data with the operation remote controller 8 that can be operated by the user via the water heater side control unit 3a of the water heater 3, and various operations are set by operating the switch of the operation remote controller 8. Then, the command signal is transmitted from the operation remote controller 8 to the control unit 16. For example, when the target hot water set temperature is set by operating the switch of the operation remote controller 8, the target hot water set temperature data is transmitted from the operation remote controller 8 to the control unit 16. The control unit 16 corresponds to a pressure difference determination control unit.

次に、本発明に関連する圧力差判定運転制御について説明する。
制御ユニット16は、施工時やメンテナンス時に、圧力センサ21によって、混合弁13の温水通路12側を閉止した状態で出湯通路14を流れる低温水の給水圧力を検出すると共に混合弁13の給水通路11側を閉止した状態で出湯通路14を流れる高温水の高温水圧力を検出し、これら検出信号に基づいて給水圧力と高温水圧力との圧力差が設定範囲内にあるか否かの判定を行うと共にこの判定結果を報知手段を介して報知する圧力差判定運転制御を実行可能である。
Next, the pressure difference determination operation control related to the present invention will be described.
The control unit 16 detects the supply pressure of the low-temperature water flowing through the hot water passage 14 with the pressure sensor 21 closed at the time of construction or maintenance, and the water supply passage 11 of the mixing valve 13. The high-temperature water pressure of the high-temperature water flowing through the tap water passage 14 with the side closed is detected, and it is determined whether or not the pressure difference between the feed water pressure and the high-temperature water pressure is within the set range based on these detection signals. At the same time, it is possible to execute pressure difference determination operation control for notifying the determination result via the notification means.

次に、この湯水混合装置1を設置後に試運転する際に、制御ユニット16により自動的に実行される圧力差判定運転制御について、図2のフローチャートに基づいて説明する。尚、図中の符号Si(i=1,2,・・)は各ステップを示す。この圧力差判定運転制御の制御プログラムは、制御ユニット16に予め格納されている。   Next, the pressure difference determination operation control that is automatically executed by the control unit 16 when the hot water / water mixing device 1 is trial-run after being installed will be described based on the flowchart of FIG. In the figure, the symbol Si (i = 1, 2,...) Indicates each step. A control program for the pressure difference determination operation control is stored in the control unit 16 in advance.

図2のフローチャートにおいて、この制御が開始されると、最初にS1において、制御ユニット16は、給湯栓開放指示が行われる。このS1の段階では、例えば、操作リモコン8の表示や音声を介して作業者に給湯栓9を開放するように促す報知を行う。   In the flowchart of FIG. 2, when this control is started, first, in S1, the control unit 16 issues a hot water tap opening instruction. In this stage of S1, for example, a notification for urging the operator to open the hot-water tap 9 is given via the display or sound of the operation remote controller 8.

次に、S2において、作業者によって給湯栓9が開放されたか否か判定し、流量センサ14bの検出信号等に基づいて給湯栓9が開放されたと判定した場合、S2の判定がYesとなり、S3に移行し、S2の判定がNoのうちはS2を繰り返す。   Next, in S2, it is determined whether or not the hot water tap 9 has been opened by the operator, and if it is determined that the hot water tap 9 has been opened based on the detection signal or the like of the flow sensor 14b, the determination in S2 is Yes, and S3 When the determination of S2 is No, S2 is repeated.

次に、S3において、制御ユニット16は、混合弁13の温水通路12側を閉止して、給水通路11と出湯通路14とを接続した状態に設定して、S4に移行し、設定時間(出湯通路14の流量が安定する時間、例えば5秒)経過したか否かを判定し、設定時間経過している場合、S4の判定がYesとなり、S5に移行し、S4の判定がNoのうちはS4を繰り返す。   Next, in S3, the control unit 16 closes the hot water passage 12 side of the mixing valve 13 and sets the state where the water supply passage 11 and the hot water passage 14 are connected. It is determined whether or not a time during which the flow rate of the passage 14 is stabilized (for example, 5 seconds) has elapsed. If the set time has elapsed, the determination of S4 is Yes, the process proceeds to S5, and the determination of S4 is Repeat S4.

次に、S5において、圧力センサ21の検出信号を読み込み、この検出信号に基づいて、制御ユニット16は、混合弁13の温水通路12側を閉止した状態で出湯通路14を流れる低温水の給水圧力Pa[kPa]を算出し、S6に移行する。   Next, in S5, the detection signal of the pressure sensor 21 is read, and on the basis of this detection signal, the control unit 16 supplies the low-pressure water supply pressure flowing through the tap water passage 14 with the hot water passage 12 side of the mixing valve 13 closed. Pa [kPa] is calculated, and the process proceeds to S6.

次に、S6において、制御ユニット16は、混合弁13の給水通路11側を閉止して、温水通路12と出湯通路14とを接続した状態に設定して、S7に移行し、設定時間経過したか否かを判定し、設定時間(流量が安定する時間、例えば5秒)経過している場合、S7の判定がYesとなり、S8に移行し、S7の判定がNoのうちはS7を繰り返す。   Next, in S6, the control unit 16 closes the water supply passage 11 side of the mixing valve 13 and sets the hot water passage 12 and the hot water passage 14 in a connected state, and proceeds to S7, and the set time has elapsed. If the set time (the time for which the flow rate is stabilized, for example, 5 seconds) has elapsed, the determination in S7 is Yes, the process proceeds to S8, and if the determination in S7 is No, S7 is repeated.

次に、S8において、圧力センサ21の検出信号を読み込み、この検出信号に基づいて、制御ユニット16は、混合弁13の給水通路11側を閉止した状態で出湯通路14を流れる高温水の高温水圧力Pb[kPa]を算出し、S9に移行する。   Next, in S8, the detection signal of the pressure sensor 21 is read, and on the basis of this detection signal, the control unit 16 uses the hot water of the high-temperature water flowing through the tap water passage 14 with the water supply passage 11 side of the mixing valve 13 closed. The pressure Pb [kPa] is calculated, and the process proceeds to S9.

次に、S9において、給水圧力Paと高温水圧力Pbとの圧力差|Pa−Pb|が設定範囲α(例えば50kPa)内にあるか否かの判定を行う。S9の判定がYesの場合、つまり、圧力差が設定範囲内にある場合、S10に移行し、判定結果である圧力差正常を、操作リモコン8の表示や音声等を介して使用者に報知する、又は、制御ユニット16の複数のLEDの点灯や点滅を介して使用者に報知し、その後、混合弁13の温水通路12側を閉止した状態に戻して、一連の制御を終了する。   Next, in S9, it is determined whether or not the pressure difference | Pa−Pb | between the feed water pressure Pa and the high temperature water pressure Pb is within a set range α (for example, 50 kPa). If the determination in S9 is Yes, that is, if the pressure difference is within the set range, the process proceeds to S10 and the normal pressure difference that is the determination result is notified to the user via the display of the operation remote controller 8, voice, or the like. Alternatively, the user is notified through lighting and blinking of the plurality of LEDs of the control unit 16, and then the warm water passage 12 side of the mixing valve 13 is returned to the closed state, and the series of control is finished.

しかし、S9の判定がNoの場合、つまり、圧力差が設定範囲にない場合、S11に移行し、判定結果である圧力差異常を、操作リモコン8の表示や音声等を介して使用者に報知する、又は、制御ユニット16の複数のLEDの点灯や点滅等を介して使用者に報知し、その後、混合弁13の温水通路12側を閉止した状態に戻して、一連の制御を終了する。   However, if the determination in S9 is No, that is, if the pressure difference is not within the set range, the process proceeds to S11, and the pressure difference abnormality that is the determination result is notified to the user via the display of the operation remote controller 8, voice, or the like. Or the user is notified through lighting or blinking of the plurality of LEDs of the control unit 16, and then the warm water passage 12 side of the mixing valve 13 is returned to the closed state, and the series of control is finished.

尚、圧力差正常状態又は圧力差異常状態を報知すると同時に、給水圧力Pa、高温水圧力Pb、その圧力差の値を操作リモコン8の液晶等に表示しても良い。操作リモコン8の表示や音声等、制御ユニット16の複数のLEDの点灯や点滅等が報知手段に相当するものである。   At the same time that the pressure difference normal state or the pressure difference abnormal state is notified, the water supply pressure Pa, the high-temperature water pressure Pb, and the value of the pressure difference may be displayed on the liquid crystal of the operation remote controller 8 or the like. The display and sound of the operation remote controller 8 and the lighting and flashing of the plurality of LEDs of the control unit 16 correspond to the notification means.

そして、圧力差判定運転制御が終了した後に、S11にて圧力差に異常があると報知した場合、作業者は、外部給水通路7やフィルタ付接続継手11a又は外部温水通路5やフィルタ付接続継手12aに対して、減圧弁やオリフィス等を取り付けることで、給水圧力Paと高温水圧力Pbとの圧力差が設定範囲内になるにように調整する。   Then, after notifying that the pressure difference is abnormal in S11 after the pressure difference determination operation control is finished, the operator can use the external water supply passage 7, the filter-attached joint 11a, the external hot water passage 5, the filter-attached joint, or the like. The pressure difference between the water supply pressure Pa and the high-temperature water pressure Pb is adjusted to be within the set range by attaching a pressure reducing valve, an orifice, or the like to 12a.

次に、本発明の湯水混合装置1の作用及び効果について説明する。
湯水混合装置1は、混合弁13の下流側の出湯通路14に設けられた圧力センサ21によって給水圧力と高温水圧力とを夫々検出し、給水圧力と高温水圧力との圧力差が設定範囲内にあるか否かの判定を行うと共にこの判定結果を報知手段を介して報知する制御ユニット16を備えたので、施工時やメンテナンス時に、制御ユニット16(圧力差判定制御手段)によって、給水圧力と高温水圧力との圧力差が設定範囲内にあるか否かを判定し、圧力差に異常があると判定した場合には、作業員は減圧弁やオリフィスを利用して圧力差を調整することができる。
Next, the operation and effect of the hot and cold mixing device 1 of the present invention will be described.
The hot water mixing apparatus 1 detects the feed water pressure and the high temperature water pressure by the pressure sensor 21 provided in the outlet hot water passage 14 on the downstream side of the mixing valve 13, respectively, and the pressure difference between the feed water pressure and the high temperature water pressure is within the set range. And a control unit 16 for notifying the determination result via the notification means, and at the time of construction or maintenance, the control unit 16 (pressure difference determination control means) Judge whether the pressure difference from the high-temperature water pressure is within the set range, and if it is judged that the pressure difference is abnormal, the worker should adjust the pressure difference using the pressure reducing valve or orifice. Can do.

従って、圧力センサ21によって給水圧力と高温水圧力とを夫々検出することで、作業員が、施工された配管を外して、圧力計測器を使用して各圧力を測定する必要がなくなるので、容易な方法で且つ容易な構造でもって高温水圧力及び給水圧力の両方の検出を実現できる。判定結果が報知手段を介して報知されるので、作業員は、圧力差が設定範囲内にあるか否かを容易に判定することができる。   Therefore, by detecting the water supply pressure and the high-temperature water pressure by the pressure sensor 21, it is not necessary for the worker to remove the installed piping and measure each pressure using a pressure measuring instrument. It is possible to realize detection of both high-temperature water pressure and feed water pressure with a simple method and an easy structure. Since the determination result is notified through the notification means, the worker can easily determine whether or not the pressure difference is within the set range.

また、混合弁13の下流側の出湯通路14に圧力センサ21を設置して、温水通路12と給水通路11を交互に閉止することで、給水圧力と高温水圧力の両方の圧力を検出するので、給水通路11と温水通路12に専用の圧力検出手段を夫々設置する場合と比較して、低コストで給水圧力及び高温水圧力の検出を行うことができる。   Moreover, since the pressure sensor 21 is installed in the tap water passage 14 on the downstream side of the mixing valve 13 and the hot water passage 12 and the water supply passage 11 are alternately closed, both the water supply pressure and the high temperature water pressure are detected. Compared with the case where dedicated pressure detection means are installed in the water supply passage 11 and the hot water passage 12, respectively, the water supply pressure and the high temperature water pressure can be detected at a low cost.

さらに、温水通路12は、屋根上に設置された太陽熱温水器2の貯留タンク2bに連結されているので、施工現場に応じて極端に変化する太陽熱温水器2の高温水の高温水圧力の検出に対応した湯水混合装置1を提供可能である。   Furthermore, since the hot water passage 12 is connected to the storage tank 2b of the solar water heater 2 installed on the roof, detection of the high-temperature water pressure of the hot water of the solar water heater 2 that changes extremely according to the construction site. Can be provided.

次に、前記実施例を部分的に変更した形態について説明する。
[1]前記実施例の混合弁13に代えて、2つの開閉弁(湯水混合部に相当する)を設置しても良い。即ち、給水通路11と温水通路12とに開閉弁を夫々設置し、圧力差判定運転制御を実行する際は、温水通路12側の開閉弁を閉止した状態で出湯通路14を流れる低温水の給水圧力を検出すると共に給水通路11側の開閉弁を閉止した状態で出湯通路14を流れる高温水の高温水圧力を検出するようにしても良い。
Next, a mode in which the above embodiment is partially changed will be described.
[1] Instead of the mixing valve 13 of the above-described embodiment, two on-off valves (corresponding to a hot water mixing unit) may be installed. That is, when the on-off valves are respectively installed in the water supply passage 11 and the hot water passage 12 and the pressure difference determination operation control is executed, the supply of low-temperature water flowing through the hot water passage 14 with the on-off valve on the hot water passage 12 side closed. You may make it detect the high-temperature water pressure of the high temperature water which flows through the hot-water supply channel | path 14 in the state which detected the pressure and closed the on-off valve by the side of the feed water passage 11.

[2]前記実施例の圧力差判定運転制御において、設定時間経過した後に混合弁13を自動で切り換えているが、特にこの切換え制御に限定する必要はなく、作業者による操作リモコン8等の操作を介して混合弁13を切換えるようにしても良いし、流量センサ14bにより流量が安定したと判定した場合に混合弁13を切換えるようにしても良い。 [2] In the pressure difference determination operation control of the above embodiment, the mixing valve 13 is automatically switched after the set time has elapsed. However, it is not particularly limited to this switching control, and the operator operates the operation remote controller 8 or the like. Alternatively, the mixing valve 13 may be switched, or the mixing valve 13 may be switched when the flow rate sensor 14b determines that the flow rate is stable.

[3]前記実施例の圧力差判定運転制御は、湯水混合装置1を設置後に試運転する際に、制御ユニット16により自動的に実行されるが、特にこれに限定する必要はなく、操作リモコン8の操作や、制御ユニット16のスイッチの操作等を介して手動で実行されるようにしても良い。 [3] The pressure difference determination operation control of the above embodiment is automatically executed by the control unit 16 when the trial operation is performed after the hot water / water mixing apparatus 1 is installed. It may be executed manually via the above operation, the switch operation of the control unit 16 or the like.

[4]前記実施例の圧力差判定運転制御は、給水圧力と高温水圧力の両方の圧力を動圧で検出しているが、特に動圧検出に限定する必要はなく、圧力検出時に給湯栓9を閉めて静圧で検出しても良い。つまり、図2のフローチャートにおいて、S4とS5の間で給湯栓9を閉めて、S5にて静圧の給水圧力を検出し、S5とS6の間で給湯栓9を開けて圧力を抜き、S7とS8の間で給湯栓9を再び閉めて、S8にて静圧の高温水圧力を検出することで、給水圧力と高温水圧力の両方の圧力を静圧で検出し、これらから圧力差を算出しても良い。 [4] In the pressure difference determination operation control of the above embodiment, both the feed water pressure and the high-temperature water pressure are detected by dynamic pressure, but it is not particularly limited to dynamic pressure detection. 9 may be closed and detected by static pressure. That is, in the flowchart of FIG. 2, the hot water tap 9 is closed between S4 and S5, the static water pressure is detected in S5, the hot water tap 9 is opened between S5 and S6, and the pressure is released. The hot water tap 9 is closed again between S8 and S8, and the static high pressure water pressure is detected in S8, so that both the feed water pressure and the high temperature water pressure are detected by static pressure, and the pressure difference is determined from these. It may be calculated.

[5]その他、当業者であれば、本発明の趣旨を逸脱することなく、前記実施例に種々の変更を付加した形態で実施可能であり、本発明はそのような変更形態を包含するものである。 [5] In addition, those skilled in the art can implement the present invention in various forms with various modifications without departing from the spirit of the present invention, and the present invention includes such modifications. It is.

1 湯水混合装置
2 太陽熱温水器
2b 貯留タンク
11 給水通路
12 温水通路
13 混合弁
14 出湯通路
15 循環ポンプ
16 制御ユニット
21 圧力センサ
DESCRIPTION OF SYMBOLS 1 Hot water mixing apparatus 2 Solar water heater 2b Storage tank 11 Water supply path 12 Hot water path 13 Mixing valve 14 Hot water path 15 Circulation pump 16 Control unit 21 Pressure sensor

Claims (2)

温水通路からの高温水と給水通路からの低温水とを湯水混合部を介して混合して設定温度の温水を出湯する湯水混合装置において、
前記湯水混合部の下流側の出湯通路に水圧を検出する為の圧力検出手段を設け、
前記圧力検出手段によって、前記湯水混合部の前記温水通路側を閉止した状態で前記出湯通路を流れる前記低温水の給水圧力を検出すると共に前記湯水混合部の前記給水通路側を閉止した状態で前記出湯通路を流れる前記高温水の高温水圧力を検出し、これら検出信号に基づいて前記給水圧力と前記高温水圧力との圧力差が設定範囲内にあるか否かの判定を行うと共にこの判定結果を報知手段を介して報知する圧力差判定制御手段を備えたことを特徴とする湯水混合装置。
In a hot and cold water mixing device for mixing hot water from a hot water passage and low temperature water from a water supply passage through a hot and cold mixing section to discharge hot water at a set temperature,
A pressure detecting means for detecting the water pressure in the hot water outlet downstream of the hot water mixing section;
The pressure detection means detects the supply pressure of the low-temperature water flowing through the hot water passage while the hot water passage side of the hot water mixing portion is closed, and closes the water supply passage side of the hot water mixing portion. The high temperature water pressure of the high temperature water flowing through the hot water passage is detected, and based on these detection signals, it is determined whether or not the pressure difference between the feed water pressure and the high temperature water pressure is within a set range, and this determination result An apparatus for mixing hot water and water, comprising pressure difference determination control means for informing through a notification means.
前記温水通路は、屋根上に設置された太陽熱温水器の貯留タンクに連結されていることを特徴とする請求項1に記載の湯水混合装置。

The hot / cold water mixing apparatus according to claim 1, wherein the hot water passage is connected to a storage tank of a solar water heater installed on a roof.

JP2014089580A 2014-04-23 2014-04-23 Hot water mixing device Expired - Fee Related JP6299382B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109724218A (en) * 2019-01-04 2019-05-07 青岛海信日立空调系统有限公司 A kind of multi-gang air-conditioner ground heating system and control method

Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH01179836A (en) * 1987-12-29 1989-07-17 Toto Ltd Hot water and cold water mixing device
JPH0540531A (en) * 1991-08-07 1993-02-19 Kubota Corp Mixing device for hot water and cold water
JPH0674558A (en) * 1992-08-31 1994-03-15 Nippon Upro Kk Hot water supply apparatus
JP2007162969A (en) * 2005-12-09 2007-06-28 Denso Corp Hot water supply system
JP2013036693A (en) * 2011-08-09 2013-02-21 Tokyo Gas Co Ltd Supply water preheating system

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH01179836A (en) * 1987-12-29 1989-07-17 Toto Ltd Hot water and cold water mixing device
JPH0540531A (en) * 1991-08-07 1993-02-19 Kubota Corp Mixing device for hot water and cold water
JPH0674558A (en) * 1992-08-31 1994-03-15 Nippon Upro Kk Hot water supply apparatus
JP2007162969A (en) * 2005-12-09 2007-06-28 Denso Corp Hot water supply system
JP2013036693A (en) * 2011-08-09 2013-02-21 Tokyo Gas Co Ltd Supply water preheating system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109724218A (en) * 2019-01-04 2019-05-07 青岛海信日立空调系统有限公司 A kind of multi-gang air-conditioner ground heating system and control method
CN109724218B (en) * 2019-01-04 2021-04-06 青岛海信日立空调系统有限公司 Multi-split air-conditioning floor heating system and control method

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