JP5050617B2 - Hot water storage water heater - Google Patents

Hot water storage water heater Download PDF

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JP5050617B2
JP5050617B2 JP2007101525A JP2007101525A JP5050617B2 JP 5050617 B2 JP5050617 B2 JP 5050617B2 JP 2007101525 A JP2007101525 A JP 2007101525A JP 2007101525 A JP2007101525 A JP 2007101525A JP 5050617 B2 JP5050617 B2 JP 5050617B2
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hot water
temperature
water storage
storage tank
control means
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JP2008256322A (en
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和也 下坊
雅文 橋本
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

本発明は、加熱手段にヒートポンプや電気ヒーターを用いた貯湯式給湯機に関する。   The present invention relates to a hot water storage type water heater using a heat pump or an electric heater as a heating means.

従来の貯湯式給湯機は、例えば、特許文献１に示す如きものがある。   A conventional hot water storage type water heater is, for example, as shown in Patent Document 1.

図３は、従来の貯湯式給湯機の構成を示すもので加熱手段としてヒートポンプ式を用いたものである。図３において、１は圧縮機、２は放熱器、３は膨張弁、４は蒸発器であり、前記圧縮機１，前記放熱器２、前記膨張弁３、前記蒸発器４は順次接続され、加熱手段１１としてのヒートポンプの冷媒回路を構成する。５は貯湯タンク、６は水循環ポンプ、７は前記放熱器２と熱交換する熱媒体熱交換器であり、前記水循環ポンプ６および前記熱媒体熱交換器７は貯湯タンク５の下部と上部を連通する熱媒体循環路を構成する。８は温度検知器であり、熱媒体熱交換器７の出口に設けられ、媒体温度を検出して、信号を発す
る。９は複数の貯湯タンク温度検知器であり、貯湯タンク５内部の熱媒体温度を検出して信号を発する。１０は制御手段であり、過去の昼間時間帯の使用熱量の実状を反映して、次の深夜時間帯の沸き上げ設定温度を変える。すなわち、使用熱量の少ない場合には沸き上げの設定温度を下げ、使用熱量の多い場合は沸き上げの設定温度を上げることで、必要湯量を確保して、湯不足が発生することなく、電力料金の高い昼間時間帯での加熱手段１１の運転を極力減らすようになっている。
特開２００３−１４３０３号公報 FIG. 3 shows a configuration of a conventional hot water storage type hot water heater, which uses a heat pump type as a heating means. In FIG. 3, 1 is a compressor, 2 is a radiator, 3 is an expansion valve, 4 is an evaporator, and the compressor 1, the radiator 2, the expansion valve 3, and the evaporator 4 are sequentially connected, A refrigerant circuit of a heat pump as the heating means 11 is configured. 5 is a hot water storage tank, 6 is a water circulation pump, 7 is a heat medium heat exchanger for exchanging heat with the radiator 2, and the water circulation pump 6 and the heat medium heat exchanger 7 communicate with the lower and upper parts of the hot water storage tank 5. A heat medium circulation path is configured. Reference numeral 8 denotes a temperature detector, which is provided at the outlet of the heat medium heat exchanger 7, detects the medium temperature, and issues a signal. A plurality of hot water storage tank temperature detectors 9 detect the heat medium temperature inside the hot water storage tank 5 and generate a signal. Reference numeral 10 denotes a control means, which changes the heating setting temperature in the next midnight time zone, reflecting the actual state of the amount of heat used in the past daytime time zone. In other words, when the amount of heat used is low, the set temperature for boiling is lowered, and when the amount of heat used is high, the set temperature for boiling is increased, ensuring the necessary amount of hot water and ensuring that there is no shortage of hot water. The operation of the heating means 11 is reduced as much as possible in the high daytime hours.
JP 2003-14303 A

しかしながら、従来の構成では、過去の昼間時間帯の使用熱量が多い場合には、次の深夜時間帯の沸き上げ設定温度を上げて必要熱量を確保するため、電力料金の安い深夜時間帯に沸き上げることでランニングコストを抑えることが出来るが、一方で、沸き上げ温度を上げると、ミネラル成分を多く含む地域においては、このミネラル成分が湯水の温度を上げることで給湯機内部にスケールとして堆積し、特に熱媒体熱交換器７などの細い配管部分に堆積した場合には配管詰まりをおこして、給湯機としての信頼性を損なってしまうという課題があった。   However, in the conventional configuration, when the amount of heat used in the past daytime hours is large, the heating temperature is set at the next midnight time zone and the necessary heat amount is increased to ensure the necessary heat amount. The running cost can be reduced by raising the temperature, but on the other hand, if the boiling temperature is raised, in areas containing a lot of mineral components, the mineral components accumulate as scale inside the water heater by raising the temperature of the hot water. In particular, there is a problem that the pipe is clogged when it is deposited on a thin pipe portion such as the heat medium heat exchanger 7 and the reliability as the water heater is impaired.

本発明は、前記従来の課題を解決するもので、ミネラル成分の多い水質地域においては、沸き上げ温度の上限を設定することで、信頼性を高めた貯湯式給湯機を提供することを目的とする。   The present invention solves the above-mentioned conventional problems, and aims to provide a hot water storage type hot water heater with improved reliability by setting an upper limit of the boiling temperature in a water quality region with a lot of mineral components. To do.

前記従来の課題を解決するために、本発明の貯湯式給湯機は、湯水を貯える貯湯タンクと、前記貯湯タンク内の湯水を加熱する加熱手段と、浴槽の温水を沸かし直しするための風呂加熱手段と、制御手段と、前記制御手段は設置後の試運転時に電力制度設定をするための電力会社記憶手段と、給湯熱量から必要熱量を計算し前記貯湯タンクに貯える湯水の沸き上げ温度を演算する温度設定部とを備え、前記制御手段は試運転時に設定した電力会社設定に応じて沸き上げ温度の上限値を温度設定部に設定する構成とすることで、ミネラル成分の多い水質地域においては、沸き上げ温度の上限を自動的に切り変えることができるので、スケール堆積を抑え、信頼性をより高めた貯湯式給湯機を提供することができる。 In order to solve the above-mentioned conventional problems, a hot water storage type water heater of the present invention comprises a hot water storage tank for storing hot water, a heating means for heating the hot water in the hot water storage tank, and a bath heating for reheating the hot water in the bathtub. Means, control means, and the control means calculate the necessary heat amount from the hot water supply heat amount and calculate the boiling temperature of the hot water stored in the hot water storage tank for setting the power system during the trial operation after installation. A temperature setting unit, and the control means is configured to set the upper limit value of the boiling temperature in the temperature setting unit according to the electric power company setting set during the trial operation. Since the upper limit of the raised temperature can be automatically switched, it is possible to provide a hot water storage type hot water heater that suppresses scale accumulation and has higher reliability.

本発明は、ミネラル成分の多い水質地域においては、沸き上げ温度の上限を自動的に切り変えることができるので、スケール堆積を抑え、信頼性をより高めた貯湯式給湯機を提供することができる。   The present invention can automatically change the upper limit of the boiling temperature in a water quality region with a large amount of mineral components, so that it is possible to provide a hot water storage type hot water heater with reduced scale accumulation and higher reliability. .

第１の発明の貯湯式給湯機は、湯水を貯える貯湯タンクと、前記貯湯タンク内の湯水を加熱する加熱手段と、浴槽の温水を沸かし直しするための風呂加熱手段と、制御手段と、前記制御手段は設置後の試運転時に電力制度設定をするための電力会社記憶手段と、給湯熱量から必要熱量を計算し前記貯湯タンクに貯える湯水の沸き上げ温度を演算する温度設定部とを備え、前記制御手段は試運転時に設定した電力会社設定に応じて沸き上げ温度の上限値を温度設定部に設定することにより、ミネラル成分の多い水質地域においては、沸き上げ温度の上限を自動的に切り変えることができるので、スケール堆積を抑え、信頼性をより高めた貯湯式給湯機を提供することができる。 A hot water storage type water heater of the first invention includes a hot water storage tank for storing hot water, a heating means for heating the hot water in the hot water storage tank, a bath heating means for reboiling hot water in the bathtub, a control means, The control means includes an electric power company storage means for setting an electric power system during a trial operation after installation, and a temperature setting unit that calculates a necessary heat amount from the hot water supply heat amount and calculates a boiling temperature of hot water stored in the hot water storage tank, The control means automatically switches the upper limit of the boiling temperature in water quality areas with many mineral components by setting the upper limit value of the boiling temperature in the temperature setting section according to the power company setting set during the trial operation. Therefore, it is possible to provide a hot water storage type water heater that suppresses the accumulation of scale and has higher reliability.

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. Note that the present invention is not limited to the embodiments.

（実施の形態）
図１は、本実施の形態における貯湯式給湯機の構成図である。実線矢印は湯水の流通方向を示し、点線矢印は信号の通信を示している。図１において、貯湯タンク５には、ヒートポンプや電気ヒーターなどで加熱された湯が貯えられる。本実施の形態では、ヒートポンプ１１によって加熱を行い、貯湯タンク５に湯を貯えているが、本実施の形態に限定されることがなく、電気ヒーターなどで貯湯タンク５内の湯水を加熱してもよい。 (Embodiment)
FIG. 1 is a configuration diagram of a hot water storage type water heater in the present embodiment. A solid line arrow indicates the flowing direction of hot water, and a dotted line arrow indicates signal communication. In FIG. 1, hot water heated by a heat pump or an electric heater is stored in a hot water storage tank 5. In this embodiment, heating is performed by the heat pump 11 and hot water is stored in the hot water storage tank 5, but the present invention is not limited to this embodiment, and hot water in the hot water storage tank 5 is heated by an electric heater or the like. Also good.

ヒートポンプ１１は、水冷媒熱交換器７、圧縮機１、蒸発器４、膨張弁３を冷媒配管により順次環状に接続して構成されており、冷媒には二酸化炭素を使用しているため、高圧側では臨界圧力を超えるので、水冷媒熱交換器７を流通する水に熱を奪われて温度が低下しても凝縮することがなく、水冷媒熱交換器で冷媒と水との間で温度差を形成しやすくなり、高温の湯が得られ、かつ熱交換効率を高くすることができる。また、熱交換効率を上げるため、配管を細く、かつ、長くして接触面積を広く取るのが一般的で有る。また、比較的安価でかつ安定な二酸化炭素を冷媒に使用しているので、製品コストを抑えるとともに、信頼性を向上させることができる。また、二酸化炭素はオゾン破壊係数がゼロであり、地球温暖化係数も代替冷媒ＨＦＣ−４０７Ｃの約１７００分の１と非常に小さいため、地球環境に優しい製品を提供できる。   The heat pump 11 is configured by sequentially connecting the water-refrigerant heat exchanger 7, the compressor 1, the evaporator 4, and the expansion valve 3 in an annular manner through a refrigerant pipe, and uses carbon dioxide as the refrigerant. Since the critical pressure is exceeded on the side, the water flowing through the water-refrigerant heat exchanger 7 does not condense even if the temperature is lowered due to heat being taken away, and the temperature between the refrigerant and water is reduced by the water-refrigerant heat exchanger. A difference is easily formed, high-temperature hot water can be obtained, and heat exchange efficiency can be increased. Also, in order to increase the heat exchange efficiency, it is common to make the piping narrower and longer to increase the contact area. In addition, since carbon dioxide, which is relatively inexpensive and stable, is used as the refrigerant, the product cost can be reduced and the reliability can be improved. In addition, carbon dioxide has an ozone depletion coefficient of zero and a global warming coefficient of about 1/700 of the alternative refrigerant HFC-407C, which is very small.

また、圧縮機１で冷媒が圧縮され、圧縮機１から吐出された冷媒が水冷媒熱交換器７で放熱し、膨張弁３で減圧されたあと、蒸発器４で空気から熱を吸収し、ガス状態で再び圧縮機１に吸入される。なお、圧縮機の能力制御および膨張弁３の開度制御は、圧縮機１の吐出側に設けたサーミスタ（図示せず）で検出される吐出冷媒の温度が予め設定された温度を維持するように制御される。また、貯湯タンク５内の湯水は、水循環ポンプ６が作動することで、水冷媒熱交換器７に流入し、冷媒と熱交換を行い、再び貯湯タンク５に戻り、積層状態で貯湯タンク５の上部に高温の湯が貯えられる。そして、温度設定部１２は、過去の使用熱量から必要な貯湯熱量を計算し、沸き上げ温度を決定し、サーミスタ８が所定の温度になるようにヒートポンプ１１、水循環ポンプ６を制御する。   In addition, the refrigerant is compressed by the compressor 1, the refrigerant discharged from the compressor 1 dissipates heat by the water refrigerant heat exchanger 7, is decompressed by the expansion valve 3, and then absorbs heat from the air by the evaporator 4, The gas is again sucked into the compressor 1. In the compressor capacity control and the expansion valve 3 opening control, the temperature of the discharge refrigerant detected by a thermistor (not shown) provided on the discharge side of the compressor 1 is maintained at a preset temperature. Controlled. The hot water in the hot water storage tank 5 flows into the water / refrigerant heat exchanger 7 by the operation of the water circulation pump 6, exchanges heat with the refrigerant, returns to the hot water storage tank 5 again, and in the stacked state, Hot water is stored at the top. Then, the temperature setting unit 12 calculates the required hot water storage amount from the past heat consumption, determines the boiling temperature, and controls the heat pump 11 and the water circulation pump 6 so that the thermistor 8 reaches a predetermined temperature.

一方、給湯端末１５や浴槽１６への出湯に伴い、貯湯タンク５の上方部に配設された出湯管２７から高温の湯が出湯され、風呂湯温制御手段である電動式混合弁１７、給湯端末湯温制御手段である電動式混合弁２４にて水と適温に混合される。本実施の形態においては、電動式混合弁１７で混合された湯水は浴槽１６へ、電動式混合弁２４で混合された湯水は給湯端末（蛇口）１５へ供給される。また、本実施の形態において、湯と水との混合手段には電動式混合弁を用いたが、ワックスサーモ混合弁を用いて出力温度を一定にした構成にしてもよい。   On the other hand, along with the hot water supply to the hot water supply terminal 15 and the bathtub 16, hot hot water is discharged from the hot water discharge pipe 27 disposed in the upper part of the hot water storage tank 5, and the electric mixing valve 17 serving as bath water temperature control means, hot water supply It is mixed with water at an appropriate temperature by an electric mixing valve 24 which is a terminal hot water temperature control means. In the present embodiment, the hot water mixed by the electric mixing valve 17 is supplied to the bathtub 16, and the hot water mixed by the electric mixing valve 24 is supplied to the hot water supply terminal (faucet) 15. In this embodiment, the electric mixing valve is used as the mixing means for hot water and water. However, the output temperature may be made constant by using a wax thermo mixing valve.

また、水冷媒熱交換器７から貯湯タンク５に高温の湯として戻される戻り口２８は、出湯管２７とは別に設けてあり、このように構成することで給湯端末１５や浴槽１６へ湯水を供給しながら、貯湯タンク５内の湯を沸き上げることができる。   Further, the return port 28 that is returned as hot hot water from the water / refrigerant heat exchanger 7 to the hot water storage tank 5 is provided separately from the hot water outlet pipe 27, so that hot water is supplied to the hot water supply terminal 15 and the bathtub 16. While supplying, the hot water in the hot water storage tank 5 can be boiled.

浴槽１６と電動式混合弁１７との間には、貯湯タンク５から供給される湯水の停止を行う二方向の風呂回路遮断手段である電磁弁１８と、浴槽１６へ供給される湯水の流量を検出する風呂流量検出手段である流量センサ１９と、浴槽１６へ供給される湯水の温度を検出する風呂湯温検出手段であるサーミスタ２０を設けており、サーミスタ２０の検出値に基づいて電動式混合弁１７の制御を行う。また、１次側水循環ポンプ２１、水熱交換器２２、が貯湯タンク５の下部から上部へと順次環状に接続された１次側循環回路と、２次側水循環ポンプ２３、水熱交換器２２、が浴槽１６へと順次環状に接続された２次側循環回路にて構成された風呂加熱手段を設けてあり、１次側水循環ポンプ２１、２次側水循環ポンプ２３を制御することで、貯湯タンク５の高温水との熱交換にて浴槽の保温や沸かし直
しをすることができる。また、水熱交換器２２での熱交換効率を上げるため、配管を細く、かつ、長くして接触面積を広く取るのが一般的で有る。 Between the bathtub 16 and the electric mixing valve 17, the flow rate of the hot water supplied to the electromagnetic valve 18 which is a two-way bath circuit shut-off means for stopping hot water supplied from the hot water storage tank 5 and the hot water supplied to the bathtub 16 is set. A flow rate sensor 19 which is a bath flow rate detection means to detect and a thermistor 20 which is a bath water temperature detection means to detect the temperature of hot water supplied to the bathtub 16 are provided, and electric mixing is performed based on the detection value of the thermistor 20. The valve 17 is controlled. In addition, a primary-side circulation circuit in which a primary-side water circulation pump 21 and a water heat exchanger 22 are annularly connected sequentially from the lower part to the upper part of the hot water storage tank 5, a secondary-side water circulation pump 23, and a water heat exchanger 22. Is provided with a bath heating means composed of a secondary circulation circuit that is sequentially connected to the bathtub 16 in an annular manner, and by controlling the primary water circulation pump 21 and the secondary water circulation pump 23, The bath can be kept warm and reheated by heat exchange with the hot water in the tank 5. Further, in order to increase the heat exchange efficiency in the water heat exchanger 22, it is common to make the piping narrower and longer to increase the contact area.

給湯端末（蛇口）１５と電動式混合弁２４との間には、貯湯タンク５から供給される湯水の流量を検出する給湯端末流量検出手段である流量センサ２５と、給湯端末（蛇口）１５へ供給される湯水の温度を検出する給湯端末湯温検出手段であるサーミスタ２６を設けており、サーミスタ２６の検出値に基づいて電動式混合弁２４の制御を行う。   Between the hot water supply terminal (faucet) 15 and the electric mixing valve 24, a flow rate sensor 25, which is a hot water supply terminal flow rate detecting means for detecting the flow rate of hot water supplied from the hot water storage tank 5, and the hot water supply terminal (faucet) 15. A thermistor 26 serving as a hot water supply terminal hot water temperature detecting means for detecting the temperature of the supplied hot water is provided, and the electric mixing valve 24 is controlled based on the detected value of the thermistor 26.

また、本実施の形態においては、リモコン１４において、浴槽１６への湯張り、給湯端末（蛇口）１５の温度設定の各種設定を行っているが、適宜リモコンを複数設ける構成としてもよい。また、リモコン１４には、制御手段１０からの指令で情報を表示したり、音声を発生する構成としているので、ユーザーが理解しやすいリモコンとなっている。   In the present embodiment, the remote controller 14 performs various settings such as filling the bathtub 16 and setting the temperature of the hot water supply terminal (faucet) 15, but a plurality of remote controllers may be provided as appropriate. Further, since the remote controller 14 is configured to display information or generate sound in response to a command from the control means 10, the remote controller 14 is easy to understand for the user.

以下、浴槽１６、給湯端末（蛇口）１５への出湯について説明する。   Hereinafter, the hot water supply to the bathtub 16 and the hot water supply terminal (faucet) 15 will be described.

ユーザーは、浴室内に設置されたリモコン１４で、所望の浴槽への湯張り量、湯張り温度を設定し、それぞれの設定値をリモコン１４から浴槽への湯張りを制御する制御手段１０に送信することで、浴槽への自動湯張りができる。   The user sets the desired amount of hot water filling and hot water filling temperature to the bathtub with the remote controller 14 installed in the bathroom, and transmits the set values from the remote controller 14 to the control means 10 for controlling the hot water filling to the bathtub. By doing so, you can automatically fill the bathtub.

また、給湯端末（蛇口）１５から出湯させたい時には、リモコン１４で所望の給湯温度を設定し、リモコン１４から給湯端末（蛇口）１５の出湯温度を制御する制御手段１０へと送信することにより、サーミスタ２６の温度に基づいて電動式混合弁２４を制御して給湯端末（蛇口）１５から出湯することができる。   Further, when it is desired to discharge hot water from the hot water supply terminal (faucet) 15, a desired hot water supply temperature is set by the remote controller 14 and transmitted from the remote controller 14 to the control means 10 that controls the hot water supply temperature of the hot water supply terminal (faucet) 15. The electric mixing valve 24 can be controlled based on the temperature of the thermistor 26 to discharge hot water from the hot water supply terminal (faucet) 15.

以上のように構成された貯湯式給湯機について、以下、制御手段１０の動作・作用について説明する。   Regarding the hot water storage type water heater configured as described above, the operation and action of the control means 10 will be described below.

通常、設置後、最初に電源を入れた場合は給湯機の運転確認のための試運転を行う。そして、電力契約に基づく料金制度設定や時刻設定などの各種設定もこの時に行い、制御手段１０の記憶装置に記憶される。近年、電力契約の時間帯別料金制度が普及し、各電力会社も様々な時間帯別料金制度を設定しており、試運転時にリモコン１４にて電力会社と料金制度を選択したものが、制御手段１０内にある電力会社記憶手段１３に記憶される。   Normally, when the power is turned on for the first time after installation, a test run is performed to check the operation of the water heater. Various settings such as a charge system setting and a time setting based on the power contract are also made at this time and stored in the storage device of the control means 10. In recent years, hourly rate systems for electric power contracts have become widespread, and each electric power company has also set various hourly rate systems, and the control means is the one that selects the electric company and the fee system with the remote controller 14 during trial operation. 10 is stored in the electric power company storage means 13 in 10.

ここで、ある電力会社の地域の水質がミネラル成分が多く、スケール堆積が発生しやすい地域であることがあらかじめ分かっている場合、電力会社記憶手段１３に記憶された電力会社によって、温度設定部１２に沸き上げ温度の上限値をそれぞれ設定する構成としてある。   Here, when it is known in advance that the water quality of an area of a certain electric power company is a region where there are many mineral components and scale deposition is likely to occur, the temperature setting unit 12 is set by the electric power company stored in the electric power company storage means 13. The upper limit value of the boiling temperature is set for each.

例えば、電力会社Ａの地域はミネラル成分が少ないため、沸き上げ上限値は無し、電力会社Ｂの地域はミネラル成分が多めのため、沸き上げ温度上限値は８０℃、電力会社Ｃの地域はミネラル成分が非常に多いため、沸き上げ温度上限値は７５℃とあらかじめ設定しておく。   For example, the area of electric power company A has few mineral components, so there is no upper boiling limit, and the area of electric power company B has more mineral components, so the upper boiling temperature limit is 80 ° C, and the area of electric power company C is mineral. Since there are so many components, the boiling temperature upper limit is set in advance to 75 ° C.

試運転時に電力会社Ｂが設定されると、電力会社記憶手段１３に電力会社Ｂが記憶される。そして、使用者の給湯や風呂湯張りなどの使用熱量が多いとき、温度設定部１２は、必要熱量の演算結果として沸き上げ温度を９０℃とする。   When the power company B is set during the trial operation, the power company B is stored in the power company storage means 13. When the amount of heat used by the user such as hot water supply or bathing is large, the temperature setting unit 12 sets the boiling temperature to 90 ° C. as a calculation result of the necessary heat amount.

一方、電力会社記憶手段１３には電力会社Ｂが記憶されており、沸き上げ温度上限値は８０℃のため、制御手段１０は貯湯タンク５に８０℃の湯が貯まるように、ヒートポンプ１１、水循環ポンプ６を制御する。   On the other hand, since the electric power company B is stored in the electric power company storage means 13 and the boiling temperature upper limit is 80 ° C., the control means 10 causes the heat pump 11 and the water circulation so that hot water of 80 ° C. is stored in the hot water storage tank 5. The pump 6 is controlled.

このように、一般に湯水の温度が上がるとスケールが発生しやすくなり、ヒートポンプ１１の水冷媒熱交換器７や、風呂加熱手段の水熱交換器２２といった水配管が細くなっている部分に堆積した場合には配管詰まりが発生して給湯機としての性能が発揮できなることが有るのに対し、沸き上げ温度をあらかじめ低く抑えておくことでスケールの発生を防止でき、給湯機の信頼性を高めることができる。   As described above, generally, when the temperature of hot water rises, the scale is likely to be generated, and is accumulated in a portion where the water piping is narrow, such as the water refrigerant heat exchanger 7 of the heat pump 11 and the water heat exchanger 22 of the bath heating means. In some cases, clogging of piping may occur and the performance as a water heater can be demonstrated. On the other hand, by keeping the boiling temperature low beforehand, scale generation can be prevented and the reliability of the water heater can be improved. be able to.

以上のように、試運転時の電力会社設定によって沸き上げ温度設定の上限値を設定することで、ミネラル成分の多い水質地域では沸き上げ温度を抑えることで、スケール堆積を抑えることが出来るので、給湯機の信頼性を上げることができ、ユーザーに不快感を与えることの無い貯湯式給湯機を提供することができる。また、仕向地ごとの製品管理をする必要が無くなるので製品品種を減らすことができ、管理コストを安くすることができる。   As described above, by setting the upper limit of the boiling temperature setting according to the electric power company setting at the time of trial operation, scale accumulation can be suppressed by suppressing the boiling temperature in water quality areas with many mineral components. It is possible to provide a hot water storage type hot water heater that can increase the reliability of the machine and does not give the user a feeling of discomfort. In addition, since it is not necessary to manage products for each destination, product types can be reduced, and management costs can be reduced.

以上のように、本発明はヒートポンプ式の貯湯式温水器に限らず、電気ヒーター方式による貯湯式温水器に利用することができる。   As described above, the present invention is not limited to a heat pump type hot water storage water heater, but can be used for a hot water storage water heater using an electric heater system.

実施の形態における貯湯式給湯機の構成図Configuration diagram of a hot water storage type water heater in an embodiment 実施の形態におけるフローチャートFlowchart in the embodiment 従来の実施の形態における貯湯式給湯機の構成図Configuration diagram of a hot water storage type water heater in a conventional embodiment

１ 圧縮機
２ 放熱器
３ 膨張弁
４ 蒸発器
５ 貯湯タンク
６ 水循環ポンプ
７ 水冷媒熱交換器
８ サーミスタ（沸き上げ湯温検出手段）
９ 貯湯タンク温度検知器
１０ 制御手段
１１ ヒートポンプ
１２ 温度設定部
１３ 電力会社記憶手段
１４ リモコン
１７ 電動式混合弁（風呂湯温制御手段）
１８ 電磁弁（風呂回路遮断手段）
１９ 流量検出装置（風呂流量検出手段）
２０ サーミスタ（風呂湯温検出手段）
２１ １次側水循環ポンプ
２２ 水熱交換器（風呂加熱手段）
２３ ２次側水循環ポンプ
２４ 電動式混合弁（給湯端末湯温制御手段）
２５ 流量検出装置（給湯端末流量検出手段）
２６ サーミスタ（給湯端末湯温検出手段） DESCRIPTION OF SYMBOLS 1 Compressor 2 Radiator 3 Expansion valve 4 Evaporator 5 Hot water storage tank 6 Water circulation pump 7 Water refrigerant heat exchanger 8 Thermistor (boiling hot water temperature detection means)
DESCRIPTION OF SYMBOLS 9 Hot water storage tank temperature detector 10 Control means 11 Heat pump 12 Temperature setting part 13 Electric power company memory | storage means 14 Remote control 17 Electric mixing valve (bath hot water temperature control means)
18 Solenoid valve (bath circuit cutoff means)
19 Flow rate detection device (bath flow rate detection means)
20 Thermistor (Bath water temperature detection means)
21 Primary side water circulation pump 22 Water heat exchanger (bath heating means)
23 Secondary side water circulation pump 24 Electric mixing valve (hot water supply terminal hot water temperature control means)
25 Flow rate detection device (hot water supply terminal flow rate detection means)
26 Thermistor (hot water supply terminal hot water temperature detection means)

Claims (1)

湯水を貯える貯湯タンクと、前記貯湯タンク内の湯水を加熱する加熱手段と、浴槽の温水を沸かし直しするための風呂加熱手段と、制御手段と、前記制御手段は設置後の試運転時に電力制度設定をするための電力会社記憶手段と、給湯熱量から必要熱量を計算し前記貯湯タンクに貯える湯水の沸き上げ温度を演算する温度設定部とを備え、前記制御手段は試運転時に設定した電力会社設定に応じて沸き上げ温度の上限値を温度設定部に設定することを特徴とする貯湯式給湯機。 A hot water storage tank for storing hot water, a heating means for heating the hot water in the hot water storage tank, a bath heating means for reheating the hot water in the bathtub, a control means, and the control means are set for an electric power system during a trial run after installation. Electric power company storage means for calculating the required heat amount from the hot water supply heat amount and calculating the boiling temperature of the hot water stored in the hot water storage tank, the control means to the electric power company setting set during the trial operation Accordingly , the hot water storage type hot water heater is characterized in that the upper limit value of the boiling temperature is set in the temperature setting unit .
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