JP2016102613A - Power supply device for water heater and water heater system - Google Patents

Power supply device for water heater and water heater system Download PDF

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JP2016102613A
JP2016102613A JP2014241293A JP2014241293A JP2016102613A JP 2016102613 A JP2016102613 A JP 2016102613A JP 2014241293 A JP2014241293 A JP 2014241293A JP 2014241293 A JP2014241293 A JP 2014241293A JP 2016102613 A JP2016102613 A JP 2016102613A
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water heater
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曽木　忠幸
Tadayuki Sogi
忠幸 曽木
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Osaka Gas Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a power supply device for a water heater capable of avoiding useless energy consumption.SOLUTION: A power supply device 10 for a water heater for supplying electrical power to a power incoming part 31 for a water heater 30 operated to heat when the amount of water to be fed becomes a set value or more comprises: an input part 11 to which electrical power got from a main power supply 5 is inputted; an output part 12 for outputting electrical power to the power incoming part 31 of the water heater 30; a change-over part 13 for changing over between the input part 11 and the output part 12 into an electrically connected state or an electrically disconnected state; a temperature measuring part 14 for measuring a temperature of water fed into the water heater 30; and a power supply control part 15 for supplying electrical power to the incoming part 31 of the water heater 30 by operating the change-over part 13 so as to make an electrical connection between the input part 11 and the output part 12 when a temperature of water fed is less than a set temperature, and for supplying no electrical power to the incoming part 31 of the water heater 30 by operating the change-over part 13 so as to make an electrical disconnection between the input part 11 and the output part 12 when a temperature of water fed is a set temperature or more.SELECTED DRAWING: Figure 1

Description

本発明は、給水路を介して導入される水の量が設定値以上になると加熱作動する給湯器の受電部に電力を供給する給湯器用電源装置及び給湯システムに関する。   The present invention relates to a hot water supply power supply device and a hot water supply system for supplying electric power to a power receiving unit of a hot water heater that is heated when a quantity of water introduced through a water supply channel becomes a set value or more.

一般の家庭に単体で設置されている給湯器には、給水路を介して水が供給され、その水に対して加熱が行われる。つまり、このような給湯器は、使用者が給湯端末を開栓した結果としてその給湯器に導入される水の量が設定量以上になると、加熱作動するように構成されている。   Water is supplied to a water heater installed in a general household alone through a water supply channel, and the water is heated. In other words, such a water heater is configured to operate when the amount of water introduced into the water heater becomes equal to or greater than a set amount as a result of the user opening the hot water terminal.

給水路を介して導入される水の量が設定量以上になったとしても加熱作動しない場合がある給湯器もある。
特許文献１には、相対的に高温の湯を貯える貯湯タンクと、その貯湯タンクとセットで利用される専用の給湯器とを組み合わせたシステムが記載されている。このシステムでは、貯湯タンクに貯えられている高温の湯が専用給湯器を経由して給湯端末に給湯される。但し、貯湯タンクに高温の湯が貯えられていないときには、低温の湯又は水が専用給湯器を経由して給湯端末に給湯される。そして、専用給湯器は、貯湯タンクから供給される湯又は水の温度に応じて、加熱作動するか否かを切り替える。具体的には、給湯端末で開栓されると、貯湯タンク側から湯水が専用給湯器内に取り込まれ、その湯水温度が低ければ専用給湯器の加熱部で加熱した後に給湯端末に給湯する。これに対して、貯湯タンク側から専用給湯器内に取り込まれた湯水温度が高ければ、加熱部は非作動にして給湯端末に給湯する。 Some hot water heaters may not be heated even if the amount of water introduced through the water supply channel exceeds a set amount.
Patent Document 1 describes a system in which a hot water storage tank that stores relatively hot water and a dedicated hot water heater that is used together with the hot water storage tank are described. In this system, hot water stored in a hot water storage tank is supplied to a hot water supply terminal via a dedicated water heater. However, when hot water is not stored in the hot water storage tank, low temperature hot water or water is supplied to the hot water supply terminal via the dedicated hot water heater. Then, the dedicated water heater switches whether to perform the heating operation according to the temperature of hot water or water supplied from the hot water storage tank. Specifically, when the hot water supply terminal is opened, hot water is taken into the dedicated hot water supply from the hot water storage tank side, and if the hot water temperature is low, the hot water is heated by the heating unit of the dedicated hot water supply and then supplied to the hot water supply terminal. On the other hand, if the temperature of the hot water taken into the dedicated water heater from the hot water storage tank side is high, the heating unit is deactivated and hot water is supplied to the hot water supply terminal.

このように、貯湯タンクとそれ専用の給湯器とを組み合わせて設置する場合には、貯湯タンクに高温の湯が貯えられているか否かに応じて（即ち、給湯器へ高温の湯が導入されるか或いは低温の湯又は水が導入されるかに応じて）、給湯器を加熱作動させるか否かを切り替えることができる。   Thus, when a hot water storage tank and a dedicated water heater are installed in combination, depending on whether or not hot water is stored in the hot water storage tank (that is, hot water is introduced into the water heater). Or depending on whether cold water or water is introduced), the hot water heater can be switched on or off.

特開２００２−３１０５０５号公報JP 2002-310505 A

給水路を介して導入される水の量が設定値以上になると加熱作動する給湯器が単体で設置されていた施設や家屋などに、後付けで、熱源装置（例えば、太陽熱集熱装置、燃料電池発電装置、ガスエンジンコージェネレーション装置など）と、その熱源装置から回収する熱を蓄える貯湯タンクとを設置する場合もある。つまり、高温の湯を給湯器へと供給できる貯湯タンクと、導入される水の量が設定値以上になると必ず加熱作動する給湯器とが組み合わされることになる。
このような場合、貯湯タンク側から給湯器へ十分に高温の湯が導入されたとしても、給湯器が必ず加熱作動してしまうシステムになる。つまり、エネルギーを無駄に消費してしまうという問題が生じる。 When the amount of water introduced through the water supply channel exceeds the set value, a heat source device (for example, a solar heat collector, a fuel cell, etc.) is retrofitted to a facility or house where a water heater that operates by heating is installed alone. A power generation device, a gas engine cogeneration device, and the like) and a hot water storage tank for storing heat recovered from the heat source device. That is, a hot water storage tank that can supply high-temperature hot water to the water heater is combined with a water heater that is heated when the amount of introduced water exceeds a set value.
In such a case, even if hot water having a sufficiently high temperature is introduced from the hot water storage tank side to the hot water heater, the hot water heater is always heated. That is, there arises a problem that energy is wasted.

或いは、施設や家屋などに単体で設置されていた給湯器を取り外して、特許文献１に記載のような熱源及び貯湯タンク及び専用給湯器を新たに設置することも可能であるが、既存の給湯器を有効に活用できないという問題がある。   Alternatively, it is possible to remove a water heater that has been installed alone in a facility or a house, and newly install a heat source, a hot water storage tank, and a dedicated water heater as described in Patent Document 1, There is a problem that the vessel cannot be used effectively.

本発明は、上記の課題に鑑みてなされたものであり、その目的は、無駄なエネルギー消費を回避させることができる給湯器用電源装置及び給湯システムを提供する点にある。   This invention is made | formed in view of said subject, The objective is to provide the power supply device and hot water supply system for hot water heaters which can avoid useless energy consumption.

上記目的を達成するための本発明に係る給湯器用電源装置の特徴構成は、給水路を介して導入される水の量が設定値以上になると加熱作動する給湯器の受電部に電力を供給する給湯器用電源装置であって、
主電源から供給される電力が入力される入力部と、
前記給湯器の前記受電部に電力を出力する出力部と、
前記入力部と前記出力部との間を、電気的に接続された状態又は電気的に解列された状態に切り換える切換部と、
前記給湯器内に導入される前の前記給水路を流れる水の温度を測定する温度測定部と、
前記温度測定部が測定した水の温度が設定温度未満であるとき、前記入力部と前記出力部との間が電気的に接続されるように前記切換部を動作させて前記主電源から供給される電力を前記給湯器の前記受電部に供給させ、並びに、前記温度測定部が測定した水の温度が前記設定温度以上であるとき、前記入力部と前記出力部との間が電気的に解列されるように前記切換部を動作させて前記主電源から供給される電力を前記給湯器の前記受電部に供給させない電源制御部とを備える点にある。 In order to achieve the above object, the characteristic configuration of the water heater power supply device according to the present invention supplies power to the power receiving unit of the water heater that is heated when the amount of water introduced through the water supply channel exceeds a set value. A power supply for a water heater,
An input unit to which power supplied from the main power supply is input;
An output unit for outputting electric power to the power receiving unit of the water heater;
A switching unit that switches between the input unit and the output unit to an electrically connected state or an electrically disconnected state;
A temperature measuring unit for measuring the temperature of water flowing through the water supply channel before being introduced into the water heater;
When the temperature of the water measured by the temperature measuring unit is lower than a set temperature, the switching unit is operated so that the input unit and the output unit are electrically connected to be supplied from the main power source. When the temperature of the water measured by the temperature measuring unit is equal to or higher than the set temperature, the input unit and the output unit are electrically disconnected. And a power supply control unit that operates the switching unit so that the power supplied from the main power source is not supplied to the power receiving unit of the water heater.

上記特徴構成によれば、電源制御部は、給湯器内に導入される前の給水路を流れる水の温度を測定する温度測定部が測定した水の温度が設定温度未満であるとき、入力部と出力部との間が電気的に接続されるように切換部を動作させて、主電源から供給される電力を給湯器の受電部に供給させる。その結果、給水路を介して導入される水の量が設定値以上であれば、その設定温度未満である水が給湯器で加熱される。これに対して、電源制御部は、温度測定部が測定した水の温度が上記設定温度以上であるとき、入力部と出力部との間が電気的に解列されるように切換部を動作させて、主電源から供給される電力を給湯器の受電部に供給させない。その結果、給水路を介して導入される水の量が設定値以上であっても、受電部に電力が供給されていない給湯器は加熱作動しない。
このように、本特徴構成の給湯器用電源装置を用いることで、給水路を介して導入される水の量が設定値以上になると加熱作動するという給湯器に固有の動作に変更を加えることなく、給湯器では、設定温度未満である水に対して加熱され、設定温度以上である水に対して加熱されないことになる。
従って、無駄なエネルギー消費を回避させることができる給湯器用電源装置を提供できる。 According to the above characteristic configuration, when the temperature of the water measured by the temperature measuring unit that measures the temperature of the water flowing through the water supply channel before being introduced into the water heater is less than the set temperature, the input unit The switching unit is operated so that the power is electrically connected to the output unit, and the power supplied from the main power supply is supplied to the power receiving unit of the water heater. As a result, if the amount of water introduced through the water supply channel is equal to or greater than the set value, water having a temperature lower than the set temperature is heated by the water heater. In contrast, when the temperature of the water measured by the temperature measurement unit is equal to or higher than the set temperature, the power supply control unit operates the switching unit so that the input unit and the output unit are electrically disconnected. Thus, the power supplied from the main power supply is not supplied to the power receiving unit of the water heater. As a result, even if the amount of water introduced through the water supply channel is greater than or equal to the set value, the water heater in which no power is supplied to the power receiving unit does not operate.
In this way, by using the water heater power supply device having this characteristic configuration, without changing the operation unique to the water heater that heats when the amount of water introduced through the water supply channel exceeds a set value. In the water heater, the water is heated with respect to the water having a temperature lower than the set temperature, and is not heated with respect to the water having the temperature higher than the set temperature.
Therefore, it is possible to provide a water heater power supply device that can avoid wasteful energy consumption.

本発明に係る給湯器用電源装置の別の特徴構成は、温度値の入力を受け付ける温度受付部と、
前記温度受付部が受け付けた前記温度値を、又は、前記温度受付部が受け付けた前記温度値よりも所定温度だけ低い値を前記設定温度に決定する設定温度決定部とを備える点にある。 Another characteristic configuration of the power supply device for a water heater according to the present invention is a temperature receiving unit that receives an input of a temperature value,
A temperature setting unit that determines the temperature value received by the temperature receiving unit or a value that is lower than the temperature value received by the temperature receiving unit by a predetermined temperature as the set temperature;

給湯器の最低出力は装置によって様々である。従って、例えば、給湯器の最低出力が相対的に低い場合には、給湯器の加熱作動による水の温度上昇幅が相対的に小さいため、上記設定温度が相対的に高くなっても（即ち、相対的に高い温度の水が給湯器で加熱されることになっても）、最低出力で加熱作動している給湯器から給湯される湯の温度が極めて高温になることはない。これに対して、例えば、給湯器の最低出力が相対的に高い場合には、給湯器の加熱作動による水の温度上昇幅が相対的に大きいため、上記設定温度を相対的に低くしておかなければ（即ち、相対的に低い温度の水に対してのみ給湯器で加熱されるようにしなければ）、最低出力で加熱作動している給湯器から給湯される湯の温度が極めて高温になる可能性がある。
本特徴構成では、電源制御部が、どのような設定温度を境にして上記切換部の動作を切り換えるのか、即ち、どのような設定温度を境にして給湯器が加熱作動する又は加熱作動しないかを切り換えるのかが、温度受付部が受け付けた温度値に応じて変更される。つまり、上記設定温度を、給湯器の最低出力に応じて好ましい値に任意に変更できる。その結果、最低出力で加熱作動している給湯器から給湯される湯の温度が極めて高温になるといった問題の発生を回避できる。 The minimum output of the water heater varies from device to device. Therefore, for example, when the minimum output of the water heater is relatively low, the temperature rise width of the water due to the heating operation of the water heater is relatively small, so even if the set temperature is relatively high (that is, Even if water having a relatively high temperature is heated by the water heater, the temperature of the hot water supplied from the water heater that is heated at the minimum output does not become extremely high. On the other hand, for example, when the minimum output of the water heater is relatively high, the temperature rise width of the water due to the heating operation of the water heater is relatively large. If not (that is, if the water heater is not heated only for water having a relatively low temperature), the temperature of the hot water supplied from the water heater operating at the lowest output becomes extremely high. there is a possibility.
In this feature configuration, the power control unit switches the operation of the switching unit at what set temperature, that is, at what set temperature the hot water heater is heated or not heated. Is switched according to the temperature value received by the temperature receiving unit. That is, the set temperature can be arbitrarily changed to a preferable value according to the minimum output of the water heater. As a result, it is possible to avoid the problem that the temperature of hot water supplied from a water heater that is heated at the minimum output becomes extremely high.

本発明に係る給湯器用電源装置の更に別の特徴構成は、給水路を介して導入される水の量が設定値以上になると加熱作動する給湯器の受電部に電力を供給する給湯器用電源装置であって、
主電源から供給される電力が入力される入力部と、
前記給湯器の前記受電部に電力を出力する出力部と、
前記入力部と前記出力部との間を、電気的に接続された状態又は電気的に解列された状態に切り換える切換部と、
前記給湯器内に導入される前の前記給水路を流れる水の温度を測定する温度測定部と、
前記給湯器内に導入される前の前記給水路を流れる水の単位時間当たりの流量を測定する流量測定部と、
前記温度測定部が測定した水の温度と、前記流量測定部が測定した水の流量と、前記給湯器が最低出力で加熱作動したときに水に与えられる最低熱量とに基づいて、前記給湯器が最低出力で加熱作動したときに予測される予測水温を導出し、当該予測水温が設定上限温度未満であるとき、前記入力部と前記出力部との間が電気的に接続されるように前記切換部を動作させて前記主電源から供給される電力を前記給湯器の前記受電部に供給させ、並びに、前記予測水温が前記設定上限温度以上であるとき、前記入力部と前記出力部との間が電気的に解列されるように前記切換部を動作させて前記主電源から供給される電力を前記給湯器の前記受電部に供給させない電源制御部とを備える点にある。 Still another characteristic configuration of the power supply device for a hot water heater according to the present invention is a power supply device for a water heater that supplies electric power to a power receiving unit of a hot water heater that is heated when the amount of water introduced through the water supply channel exceeds a set value. Because
An input unit to which power supplied from the main power supply is input;
An output unit for outputting electric power to the power receiving unit of the water heater;
A switching unit that switches between the input unit and the output unit to an electrically connected state or an electrically disconnected state;
A temperature measuring unit for measuring the temperature of water flowing through the water supply channel before being introduced into the water heater;
A flow rate measuring unit for measuring a flow rate per unit time of water flowing through the water supply channel before being introduced into the water heater;
Based on the temperature of the water measured by the temperature measuring unit, the flow rate of the water measured by the flow rate measuring unit, and the minimum amount of heat given to the water when the water heater is heated and operated at the minimum output, the water heater The predicted water temperature predicted when the heating operation is performed at the minimum output is derived, and when the predicted water temperature is lower than the set upper limit temperature, the input unit and the output unit are electrically connected to each other. When the switching unit is operated to supply the power supplied from the main power source to the power receiving unit of the water heater, and when the predicted water temperature is equal to or higher than the set upper limit temperature, the input unit and the output unit And a power supply control unit that operates the switching unit so as to be electrically disconnected from each other so that the power supplied from the main power source is not supplied to the power receiving unit of the water heater.

上記特徴構成によれば、電源制御部は、温度測定部が測定した水の温度と、流量測定部が測定した水の流量と、前記給湯器が最低出力で加熱作動したときに水に与えられる最低熱量とに基づいて、給湯器が最低出力で加熱作動したときに予測される予測水温を導出する。そして、電源制御部は、上記予測水温が設定上限温度未満であるとき、入力部と出力部との間が電気的に接続されるように切換部を動作させて、主電源から供給される電力を給湯器の受電部に供給させる。その結果、給水路を介して導入される水の量が設定値以上であれば、その導入される水が給湯器で加熱される。このとき、給湯器が最低出力で加熱作動すれば、給湯器によって加熱された後の水の温度が設定上限温度以上になることは無い（即ち、極めて高温になることはない）と予測される。
これに対して、電源制御部は、上記予測水温が設定上限温度以上であるとき、入力部と出力部との間が電気的に解列されるように切換部を動作させて、主電源から供給される電力を給湯器の受電部に供給させない。その結果、給水路を介して導入される水の量が設定値以上であっても、受電部に電力が供給されていない給湯器は加熱作動しない。
このように、本特徴構成の給湯器用電源装置を用いることで、給水路を介して導入される水の量が設定値以上になると加熱作動するという給湯器に固有の動作に変更を加えることなく、給湯器が最低出力で加熱作動したときに予測される予測水温が設定上限温度未満である水に対して給湯器で加熱され、予測水温が設定上限温度以上である水に対して給湯器で加熱されないことになる。
従って、無駄なエネルギー消費を回避させることができる給湯器用電源装置を提供できる。 According to the above characteristic configuration, the power supply control unit is given to the water when the temperature of the water measured by the temperature measurement unit, the flow rate of the water measured by the flow rate measurement unit, and the water heater is heated at the minimum output. Based on the minimum amount of heat, a predicted water temperature predicted when the water heater is heated and operated at the minimum output is derived. The power control unit operates the switching unit so that the input unit and the output unit are electrically connected when the predicted water temperature is lower than the set upper limit temperature, and the power supplied from the main power source Is supplied to the power receiving unit of the water heater. As a result, if the amount of water introduced through the water supply channel is equal to or greater than the set value, the introduced water is heated by the water heater. At this time, if the water heater is heated at the minimum output, the temperature of the water heated by the water heater is predicted not to exceed the set upper limit temperature (that is, not extremely high). .
On the other hand, when the predicted water temperature is equal to or higher than the set upper limit temperature, the power supply control unit operates the switching unit so that the input unit and the output unit are electrically disconnected from the main power supply. The supplied power is not supplied to the power receiving unit of the water heater. As a result, even if the amount of water introduced through the water supply channel is greater than or equal to the set value, the water heater in which no power is supplied to the power receiving unit does not operate.
In this way, by using the water heater power supply device having this characteristic configuration, without changing the operation unique to the water heater that heats when the amount of water introduced through the water supply channel exceeds a set value. The predicted water temperature predicted when the water heater is heated at the minimum output is heated by the water heater for water whose temperature is lower than the set upper limit temperature, and the water heater for water whose predicted water temperature is equal to or higher than the set upper limit temperature. It will not be heated.
Therefore, it is possible to provide a water heater power supply device that can avoid wasteful energy consumption.

上記目的を達成するための本発明に係る給湯システムの特徴構成は、請求項１〜３の何れか一項に記載の給湯器用電源装置と、熱源から排出された熱を温水として蓄え、当該温水を前記給水路を介して前記給湯器へと送出する貯湯装置と、前記給湯器とを備える点にある。   The characteristic configuration of the hot water supply system according to the present invention for achieving the above object is that the hot water supply power supply device according to any one of claims 1 to 3 and heat discharged from a heat source are stored as hot water, and the hot water Is provided with a hot water storage device that sends the water to the water heater via the water supply channel, and the water heater.

上記特徴構成によれば、例えば低温の湯又は水が貯湯装置から給湯器へと給水路を介して供給された場合には、給湯器用電源装置は、主電源から供給される電力を給湯器の受電部に供給させる。その結果、給水路を介して導入される水の量が設定値以上であれば、その低温の湯又は水が給湯器で加熱される。これに対して、例えば高温の湯が貯湯装置から給湯器へと給水路を介して供給された場合には、給湯器用電源装置は、主電源から供給される電力を給湯器の受電部に供給させない。その結果、給水路を介して導入される水の量が設定値以上であっても、受電部に電力が供給されていない給湯器は加熱作動しない。
従って、無駄なエネルギー消費を回避させることができる給湯システムを提供できる。 According to the above characteristic configuration, for example, when low-temperature hot water or water is supplied from the hot water storage device to the hot water supply device via the water supply channel, the hot water supply power supply device supplies the electric power supplied from the main power supply to the hot water supply device. Supply to the power receiving unit. As a result, if the amount of water introduced through the water supply channel is equal to or greater than the set value, the low temperature hot water or water is heated by the water heater. On the other hand, for example, when high-temperature hot water is supplied from the hot water storage device to the hot water supply device via the water supply channel, the hot water supply power supply device supplies the power supplied from the main power supply to the power receiving unit of the hot water supply device. I won't let you. As a result, even if the amount of water introduced through the water supply channel is greater than or equal to the set value, the water heater in which no power is supplied to the power receiving unit does not operate.
Therefore, it is possible to provide a hot water supply system that can avoid unnecessary energy consumption.

第１実施形態の給湯器用電源装置及びそれを備える給湯システムの構成を示す図である。It is a figure which shows the structure of the power supply device for hot water supply of 1st Embodiment, and a hot water supply system provided with the same. 給湯システムの動作例を示すグラフである。It is a graph which shows the operation example of a hot water supply system. 第２実施形態の給湯器用電源装置の構成を示す図である。It is a figure which shows the structure of the power supply device for hot water heaters of 2nd Embodiment. 第３実施形態の給湯器用電源装置の構成を示す図である。It is a figure which shows the structure of the power supply device for water heaters of 3rd Embodiment.

＜第１実施形態＞
以下の図面を参照して本発明の第１実施形態の給湯器用電源装置１０及びそれを備える給湯システムについて説明する。
図１は、第１実施形態の給湯器用電源装置１０Ａ（１０）及びそれを備える給湯システムの構成を示す図である。図示するように、給湯システムは、給湯器用電源装置１０Ａと、貯湯装置２０と、給湯器３０とを備える。 <First Embodiment>
A water heater power supply device 10 according to a first embodiment of the present invention and a hot water supply system including the same will be described with reference to the following drawings.
FIG. 1 is a diagram illustrating a configuration of a hot water supply apparatus 10A (10) and a hot water supply system including the same according to the first embodiment. As shown in the figure, the hot water supply system includes a water heater power supply device 10 </ b> A, a hot water storage device 20, and a water heater 30.

給湯器３０は、給水路７を介して導入される水の量が設定値以上になると加熱作動するように構成されている。本実施形態では、給湯器３０は、給水路７を流れる水を加熱するための加熱部３３と、加熱部３３の動作を制御する給湯制御部３２と、外部の電源から電力を受電して、給湯器３０を構成する電気機器（例えば、上記給湯制御部３２など）へ電力を供給するための受電部３１とを有する。受電部３１への電力供給が正常に行われていれば、給湯器３０を構成する電気機器は動作できるが（給湯器３０は加熱作動できるが）、受電部３１への電力供給が正常に行われていなければ、給湯器３０を構成する電気機器は動作できない（給湯器３０は加熱作動できない）。   The water heater 30 is configured to perform a heating operation when the amount of water introduced through the water supply channel 7 exceeds a set value. In the present embodiment, the water heater 30 receives power from a heating unit 33 for heating the water flowing through the water supply channel 7, a hot water supply control unit 32 for controlling the operation of the heating unit 33, and an external power source, A power receiving unit 31 for supplying electric power to an electrical device (for example, the hot water supply control unit 32) included in the water heater 30; If the power supply to the power receiving unit 31 is normally performed, the electric devices constituting the water heater 30 can be operated (although the water heater 30 can be heated), but the power supply to the power receiving unit 31 is normally performed. If not, the electric equipment that constitutes the water heater 30 cannot operate (the water heater 30 cannot be heated).

また、加熱部３３よりも上流側の給水路７には、給水路７を介して給湯器３０内へ導入される水の単位時間当たりの流量を測定するための流量センサ３５が設けられている。加熱部３３よりも下流側の給水路７には、給水路７を流れる水の温度を測定するための給湯温度センサ３６が設けられている。つまり、給湯温度センサ３６が測定するのは、給水路７の終端に設けられている給湯端末６から給湯される水（湯）の温度である。
給湯制御部３２は、給湯端末６へ給湯される水（湯）の温度が給湯設定受付部３４で設定されている目標給湯温度となるように、加熱部３３の加熱動作を制御する。
加熱部３３は、熱を発生する発熱部３３ｂと、給水路７の途中に形成され、上記発熱部３３ｂが発生した熱と給水路７内を流れる水との熱交換（即ち、給水路７内を流れる水の加熱）を行わせる熱交換部３３ａとを有する。発熱部３３ｂは、例えばガスなどの燃料を燃焼してその燃焼熱を放出する方式の物などを用いて実現できる。 In addition, a flow rate sensor 35 for measuring the flow rate per unit time of water introduced into the water heater 30 through the water supply channel 7 is provided in the water supply channel 7 upstream of the heating unit 33. . A hot water supply temperature sensor 36 for measuring the temperature of water flowing through the water supply path 7 is provided in the water supply path 7 on the downstream side of the heating unit 33. That is, the hot water supply temperature sensor 36 measures the temperature of water (hot water) supplied from the hot water supply terminal 6 provided at the end of the water supply passage 7.
The hot water supply control unit 32 controls the heating operation of the heating unit 33 so that the temperature of water (hot water) supplied to the hot water supply terminal 6 becomes the target hot water supply temperature set by the hot water supply setting receiving unit 34.
The heating unit 33 is formed in the middle of the water supply channel 7 and the heat generation unit 33b that generates heat, and heat exchange between the heat generated by the heat generation unit 33b and the water flowing in the water supply channel 7 (that is, in the water supply channel 7). And a heat exchanging part 33a for performing heating of the water flowing through. The heat generating portion 33b can be realized by using, for example, a system that burns fuel such as gas and releases the combustion heat.

貯湯装置２０は、熱源１から排出された熱を温水として蓄え（即ち、熱媒体としての温水で熱を蓄え）、当該温水を給水路７を介して給湯器３０へと送出するように構成されている。貯湯装置２０は、温水を貯える貯湯タンク２１を有する。貯湯タンク２１の下部には、上水が供給される上水供給路３が接続されており、貯湯タンク２１の内部には湯水が満たされている。
熱源１は、燃料電池、ガスエンジンコージェネレーション装置、太陽熱集熱装置など、熱を排出する様々な装置を用いて実現できる。 The hot water storage device 20 is configured to store heat discharged from the heat source 1 as hot water (that is, store heat with hot water as a heat medium) and send the hot water to the water heater 30 via the water supply path 7. ing. The hot water storage device 20 has a hot water storage tank 21 for storing hot water. A hot water supply passage 3 through which hot water is supplied is connected to the lower part of the hot water storage tank 21, and the hot water storage tank 21 is filled with hot water.
The heat source 1 can be realized by using various devices that discharge heat, such as a fuel cell, a gas engine cogeneration device, and a solar heat collector.

貯湯タンク２１には、貯湯タンク２１と熱源１との間で湯水を循環させる湯水循環路２が接続されている。湯水循環路２の途中には循環ポンプ２２が設けられている。湯水循環路２は、貯湯タンク２１の下部から取り出された湯水が、熱源１を経由して、貯湯タンク２１の上部へと帰還するように設けられている。つまり、貯湯タンク２１の下部から取り出された相対的に低温の湯水が、熱源１で熱を回収し、熱源１から排出された熱を回収した相対的に高温の湯水は、貯湯タンク２１の上部に帰還する。その結果、貯湯タンク２１では、上部には相対的に高温の湯水が貯えられ、下部には相対的に低温の湯水が貯えられるというように、温度成層を形成して湯水が貯えられることになる。   A hot water circulation path 2 for circulating hot water between the hot water storage tank 21 and the heat source 1 is connected to the hot water storage tank 21. A circulation pump 22 is provided in the middle of the hot water circulation path 2. The hot water circulation path 2 is provided so that hot water taken out from the lower part of the hot water storage tank 21 returns to the upper part of the hot water storage tank 21 via the heat source 1. That is, the relatively low temperature hot water taken out from the lower part of the hot water storage tank 21 recovers heat with the heat source 1, and the relatively high temperature hot water recovered from the heat discharged from the heat source 1 is the upper part of the hot water storage tank 21. Return to As a result, in the hot water storage tank 21, hot water is stored by forming a temperature stratification so that a relatively high temperature hot water is stored in the upper part and a relatively low temperature hot water is stored in the lower part. .

貯湯タンク２１の上部には、貯えている湯水を出湯する出湯路４が接続されている。従って、この出湯路４からは、貯湯タンク２１に貯えられている相対的に高温の湯水が放出される。混合器２５では、出湯路４を介して貯湯タンク２１から放出される相対的に高温の水と、上水供給路３を介して供給される相対的に低温の水とが流れ込む。貯湯制御部２３は、混合器２５から下流側の給水路７へと流れ出す湯水の温度が、例えば使用者から貯湯設定受付部２４で受け付けた設定出湯温度となるように混合器２５の動作を制御する。混合器２５から下流側の給水路７へと流れ出す湯水の温度は、出湯温度センサ２６によって測定される。   The hot water storage tank 21 is connected to a hot water outlet 4 for discharging hot water stored therein. Accordingly, the hot water stored in the hot water storage tank 21 is discharged from the hot water outlet 4. In the mixer 25, relatively hot water discharged from the hot water storage tank 21 through the hot water supply passage 4 and relatively cold water supplied through the tap water supply passage 3 flow. The hot water storage control unit 23 controls the operation of the mixer 25 so that the temperature of the hot water flowing out from the mixer 25 to the downstream water supply channel 7 becomes, for example, the set hot water temperature received by the hot water storage setting reception unit 24 from the user. To do. The temperature of hot water flowing out from the mixer 25 to the downstream water supply passage 7 is measured by a hot water temperature sensor 26.

給湯器用電源装置１０Ａは、給湯器３０の受電部３１に電力を供給する。本実施形態では、給湯器用電源装置１０Ａは、主電源５から給湯器３０の受電部３１に至る間の給電線８の途中に設けられる。具体的には、給湯器用電源装置１０Ａは、主電源５から供給される電力が入力される入力部１１と、給湯器３０の受電部３１に電力を出力する出力部１２と、入力部１１と出力部１２との間を、電気的に接続された状態又は電気的に解列された状態に切り換える切換部１３と、給湯器３０内に導入される前の給水路７を流れる水の温度を測定する温度測定部１４と、電源制御部１５とを備える。主電源５は、例えば電力会社などの電力系統である。   The water heater power supply device 10 </ b> A supplies power to the power receiving unit 31 of the water heater 30. In the present embodiment, the water heater power supply device 10 </ b> A is provided in the middle of the power supply line 8 from the main power supply 5 to the power receiving unit 31 of the water heater 30. Specifically, the water heater power supply device 10 </ b> A includes an input unit 11 to which power supplied from the main power supply 5 is input, an output unit 12 that outputs power to the power receiving unit 31 of the water heater 30, and the input unit 11. The temperature of the water flowing through the water supply channel 7 before being introduced into the hot water heater 30 and the switching unit 13 that switches between the output unit 12 and the electrically connected state or the electrically disconnected state. A temperature measurement unit 14 for measuring and a power supply control unit 15 are provided. The main power source 5 is a power system such as an electric power company.

電源制御部１５は、温度測定部１４が測定した水の温度が設定温度未満であるとき、入力部１１と出力部１２との間が電気的に接続されるように切換部１３を動作させて主電源５から供給される電力を給湯器３０の受電部３１に供給させ、並びに、温度測定部１４が測定した水の温度が設定温度以上であるとき、入力部１１と出力部１２との間が電気的に解列されるように切換部１３を動作させて主電源５から供給される電力を給湯器３０の受電部３１に供給させない電源制御部１５とを備える。本実施形態では、上記設定温度は、例えば、給湯器用電源装置１０Ａが有する記憶装置（図示せず）で記憶されている値、即ち固定値である。この設定温度は、上記設定出湯温度未満であることが好ましい。   The power supply control unit 15 operates the switching unit 13 so that the input unit 11 and the output unit 12 are electrically connected when the temperature of the water measured by the temperature measurement unit 14 is lower than the set temperature. When the power supplied from the main power supply 5 is supplied to the power receiving unit 31 of the water heater 30 and the temperature of the water measured by the temperature measuring unit 14 is equal to or higher than the set temperature, the input unit 11 and the output unit 12 are not connected. Is provided with a power supply control unit 15 that operates the switching unit 13 so as to be electrically disconnected from the main power supply 5 so that the power reception unit 31 of the water heater 30 is not supplied with power. In the present embodiment, the set temperature is, for example, a value stored in a storage device (not shown) included in the water heater power supply device 10A, that is, a fixed value. This set temperature is preferably less than the set hot water temperature.

切換部１３は、接点の接触及び非接触を機械的に切り替える方式のものや、半導体スイッチング素子を用いた電気回路で構成されたものなど、様々なタイプのものを利用できる。   The switching unit 13 can use various types such as a type that mechanically switches contact and non-contact of the contacts, and a type that is configured by an electric circuit using a semiconductor switching element.

つまり、電源制御部１５は、給水路７を流れる湯水の温度が設定温度未満であるとき、入力部１１と出力部１２との間が電気的に接続されるように切換部１３を動作させて主電源５から供給される電力を給湯器３０の受電部３１に供給させる。その結果、給湯器３０を構成する電気機器は動作できるので、給湯制御部３２は、流量センサ３５で測定される水の量が設定値以上になると、給湯温度センサ３６が測定する水の温度が目標給湯温度になるように、加熱部３３の加熱動作を制御する。そして、給湯器３０で加熱された後の湯水が給湯端末６から給湯される。
これに対して、電源制御部１５は、給水路７を流れる湯水の温度が設定温度以上であるとき、入力部１１と出力部１２との間が電気的に解列されるように切換部１３を動作させて主電源５から供給される電力を給湯器３０の受電部３１に供給させない。その結果、給湯器３０を構成する電気機器は動作できないので、給湯器３０は加熱作動できず、貯湯装置２０から出湯されたままの湯水が給湯端末６から給湯されることになる。 That is, the power supply control unit 15 operates the switching unit 13 so that the input unit 11 and the output unit 12 are electrically connected when the temperature of the hot water flowing through the water supply channel 7 is lower than the set temperature. The power supplied from the main power supply 5 is supplied to the power receiving unit 31 of the water heater 30. As a result, since the electrical equipment that constitutes the water heater 30 can operate, the hot water controller 32 determines the temperature of the water measured by the hot water temperature sensor 36 when the amount of water measured by the flow rate sensor 35 exceeds a set value. The heating operation of the heating unit 33 is controlled so as to reach the target hot water supply temperature. Then, the hot water heated by the water heater 30 is supplied from the hot water supply terminal 6.
On the other hand, the power supply control unit 15 switches the switching unit 13 so that the input unit 11 and the output unit 12 are electrically disconnected when the temperature of the hot water flowing through the water supply channel 7 is equal to or higher than the set temperature. The power supplied from the main power source 5 is not supplied to the power receiving unit 31 of the water heater 30. As a result, since the electrical equipment that constitutes the water heater 30 cannot operate, the water heater 30 cannot be heated and hot water that has been discharged from the hot water storage device 20 is supplied from the hot water supply terminal 6.

図２は、給湯システムの動作例を示すグラフである。具体的には、図２（ａ）は、貯湯タンク２１に貯えられている水の温度と給湯器３０に導入される水の温度と単位時間当たりの流量との時間的な変化を示すグラフである。図２（ｂ）は、本発明の比較例であり、給湯器３０に常時電力が供給されている場合の加熱部３３で消費されるガス燃料の単位時間当たりの流量の時間的な変化を示すグラフである。図２（ｃ）は、本発明の実施例であり、本実施形態の給湯器用電源装置１０Ａを介して給湯器３０に電力供給が行われる場合の加熱部３３で消費されるガス燃料の単位時間当たりの流量の時間的な変化を示すグラフである。   FIG. 2 is a graph showing an operation example of the hot water supply system. Specifically, FIG. 2A is a graph showing temporal changes in the temperature of water stored in the hot water storage tank 21, the temperature of water introduced into the water heater 30, and the flow rate per unit time. is there. FIG. 2B is a comparative example of the present invention, and shows a temporal change in the flow rate per unit time of the gas fuel consumed by the heating unit 33 when electric power is constantly supplied to the water heater 30. It is a graph. FIG.2 (c) is an Example of this invention, and unit time of the gas fuel consumed in the heating part 33 in case electric power is supplied to the water heater 30 via the hot water heater power supply apparatus 10A of this embodiment. It is a graph which shows the time change of the hit flow rate.

図２（ａ）に示すように、貯湯タンク２１に貯えられている湯水の温度は、ほぼ６５℃で推移している。そして、貯湯制御部２３は、給湯端末６が開栓されて給水路７を水が流れることになったとき、貯湯装置２０から給水路７へと出湯される湯水の温度が設定出湯温度（この例では「４５℃」）となるように混合器２５の動作を制御している。その結果、流量が大きくなっているときの給水路７での湯水温度（温度測定部１４が測定する湯水温度）は、約４５℃に近い値となっている。尚、給水路７での湯水温度が上記設定出湯温度（４５℃）を大幅に下回っている時間帯が存在しているが、これは、給水路７で湯水が滞留している間にその温度が徐々に低下しているためである。   As shown in FIG. 2 (a), the temperature of the hot water stored in the hot water storage tank 21 changes at about 65 ° C. Then, when the hot water supply terminal 6 is opened and water flows through the water supply channel 7, the hot water storage control unit 23 sets the temperature of the hot water discharged from the hot water storage device 20 to the water supply channel 7 to the set hot water temperature (this In the example, the operation of the mixer 25 is controlled to be “45 ° C.”. As a result, the hot water temperature in the water supply channel 7 when the flow rate is large (the hot water temperature measured by the temperature measuring unit 14) is a value close to about 45 ° C. There is a time zone in which the hot water temperature in the water supply channel 7 is significantly lower than the set hot water temperature (45 ° C.). This is because is gradually decreasing.

本実施形態の給湯器３０は、電力が供給されている間は、給水路７を介して導入される水の量が設定値以上になると加熱作動するため、図２（ｂ）に示す比較例（常時電力供給、即ち、常時点火）の場合、給湯器３０は図２（ａ）に示す流量が設定値以上のタイミングで全て加熱作動して、燃料としてのガスを消費している。   Since the water heater 30 of the present embodiment is heated when the amount of water introduced through the water supply channel 7 exceeds a set value while electric power is supplied, the comparative example shown in FIG. In the case of (always power supply, that is, constant ignition), the water heater 30 is heated and operated at the timing when the flow rate shown in FIG.

これに対して、図２（ｃ）に示す本発明の実施例では、給湯器用電源装置１０Ａの温度測定部１４が測定した水の温度が設定温度未満（この例では「４０℃未満」）であるときにのみ、給湯器３０の受電部３１に電力が供給されて加熱作動して、燃料としてのガスを消費している。   On the other hand, in the embodiment of the present invention shown in FIG. 2 (c), the temperature of the water measured by the temperature measuring unit 14 of the water heater power supply device 10A is less than the set temperature (in this example, “less than 40 ° C.”). Only at certain times, power is supplied to the power receiving unit 31 of the water heater 30 to perform heating and consume gas as fuel.

このように、給湯器３０は、給水路７を介して導入される水の量が設定値以上になると加熱作動するように構成されているが、給湯器用電源装置１０Ａが、給湯器３０への電力の供給を制御することで、給水路７を介して導入される水の量が設定値以上であっても加熱作動させない状況を作りだすことができる。つまり、給湯器用電源装置１０Ａを用いることで、給水路７を介して導入される水の量が設定値以上になると加熱作動するという給湯器３０に固有の動作に変更を加えることなく、給湯器３０では、設定温度未満である水に対して加熱され、設定温度以上である水に対して加熱されないことになる。その結果、給湯器３０でのエネルギー消費量を上記比較例よりも削減することができる。   As described above, the water heater 30 is configured to be heated when the amount of water introduced through the water supply channel 7 exceeds a set value, but the water heater power supply device 10A is connected to the water heater 30. By controlling the supply of electric power, it is possible to create a situation in which the heating operation is not performed even if the amount of water introduced through the water supply channel 7 is equal to or greater than a set value. That is, by using the power supply device 10A for the water heater, the water heater can be operated without changing the operation unique to the water heater 30 that operates when the amount of water introduced through the water supply channel 7 exceeds a set value. In 30, it heats with respect to the water which is less than preset temperature, and does not heat with respect to the water which is more than preset temperature. As a result, the energy consumption in the water heater 30 can be reduced as compared with the comparative example.

＜第２実施形態＞
第２実施形態の給湯器用電源装置１０Ｂ（１０）は、外部から受け付けた情報に基づいて上記設定温度を設定する点で上記実施形態と異なっている。以下に第２実施形態の給湯器用電源装置１０Ｂの構成について説明するが、上記実施形態と同様の構成については説明を省略する。 Second Embodiment
The water heater power supply device 10B (10) of the second embodiment is different from the above embodiment in that the set temperature is set based on information received from the outside. Although the structure of the power supply device 10B for hot water heaters of 2nd Embodiment is demonstrated below, description is abbreviate | omitted about the structure similar to the said embodiment.

図３は、第２実施形態の給湯器用電源装置１０Ｂの構成を示す図である。図示するように、本実施形態の給湯器用電源装置１０Ｂは、温度値の入力を受け付ける温度受付部１６と、温度受付部１６が受け付けた温度値を、又は、温度受付部１６が受け付けた温度値よりも所定温度だけ低い値を上記設定温度に決定する設定温度決定部１７とを更に備える。   FIG. 3 is a diagram illustrating a configuration of a water heater power supply device 10B according to the second embodiment. As shown in the figure, the water heater power supply device 10B of the present embodiment includes a temperature receiving unit 16 that receives an input of a temperature value, a temperature value received by the temperature receiving unit 16, or a temperature value received by the temperature receiving unit 16. And a set temperature determining unit 17 that determines a value lower than the set temperature by a predetermined temperature as the set temperature.

例えば、温度受付部１６は、給湯システムの使用者が温度値を入力するための操作盤などを用いて実現できる。つまり、給湯システムの使用者が「４０℃」という温度値を操作盤（温度受付部１６）を用いて入力すると、その温度値が設定温度決定部１７に伝達される。そして、設定温度決定部１７は、受け付けた「４０℃」という温度値を、又は、その温度値よりも所定温度だけ低い値を上記設定温度に決定する。   For example, the temperature receiving unit 16 can be realized by using an operation panel or the like for a user of the hot water supply system to input a temperature value. That is, when a user of the hot water supply system inputs a temperature value of “40 ° C.” using the operation panel (temperature receiving unit 16), the temperature value is transmitted to the set temperature determining unit 17. Then, the set temperature determination unit 17 determines the received temperature value “40 ° C.” or a value lower than the temperature value by a predetermined temperature as the set temperature.

或いは、温度受付部１６は、給湯器３０から、給湯器３０で設定されている目標給湯温度を自動的に受け付ける装置で実現されてもよい。例えば、給湯器用電源装置１０Ｂと給湯器３０とを通信線（図示せず）を用いて互いに通信可能に接続しておく。そして、給湯器３０の給湯制御部３２から、給湯器用電源装置１０Ｂの温度受付部１６へ、給湯器３０において外部に送出する湯の目標温度として設定されている目標給湯温度の値が所定のタイミングで自動的に伝達されるように構成しておく。そして、設定温度決定部１７は、温度受付部１６が受け付けた目標給湯温度の温度値（例えば、４５℃）よりも所定温度（例えば、５℃）だけ低い値（４０℃）を上記設定温度に決定する。例えば、設定温度決定部１７は、温度受付部１６が受け付けた「４５℃」という目標給湯温度の温度値よりも所定温度（例えば、５℃）だけ低い値である「４０℃」を上記設定温度に決定する。   Or the temperature reception part 16 may be implement | achieved by the apparatus which receives automatically the target hot water supply temperature set with the hot water heater 30 from the hot water heater 30. FIG. For example, the water heater power supply device 10B and the water heater 30 are connected to each other using a communication line (not shown) so as to communicate with each other. And the value of the target hot water supply temperature set as the target temperature of the hot water sent out to the outside in the water heater 30 from the hot water supply controller 32 of the hot water heater 30 to the temperature receiving unit 16 of the power supply device 10B for hot water heater is a predetermined timing. It is configured so that it can be transmitted automatically. Then, the set temperature determining unit 17 sets a value (40 ° C.) lower by a predetermined temperature (for example, 5 ° C.) than the temperature value (for example, 45 ° C.) of the target hot water temperature received by the temperature receiving unit 16 to the set temperature. decide. For example, the set temperature determining unit 17 sets “40 ° C.”, which is a value lower than the temperature value of the target hot water supply temperature “45 ° C.” received by the temperature receiving unit 16 by a predetermined temperature (for example, 5 ° C.) to the set temperature. To decide.

給湯器３０の加熱部３３の最低出力は装置によって様々である。従って、例えば、給湯器３０の最低出力が相対的に低い場合には、給湯器３０の加熱作動による水の温度上昇幅が相対的に小さいため、上記設定温度が相対的に高くなっても（即ち、相対的に高い温度の水が給湯器３０で加熱されることになっても）、最低出力で加熱作動している給湯器３０から給湯される湯の温度が極めて高温になることはない。これに対して、例えば、給湯器３０の最低出力が相対的に高い場合には、給湯器３０の加熱作動による水の温度上昇幅が相対的に大きいため、上記設定温度を相対的に低くしておかなければ（即ち、相対的に低い温度の水に対してのみ給湯器３０で加熱されるようにしなければ）、最低出力で加熱作動している給湯器３０から給湯される湯の温度が極めて高温になる可能性がある。   The minimum output of the heating unit 33 of the water heater 30 varies depending on the apparatus. Therefore, for example, when the minimum output of the water heater 30 is relatively low, the temperature rise width of the water due to the heating operation of the water heater 30 is relatively small, so even if the set temperature is relatively high ( That is, even when relatively high temperature water is heated by the water heater 30), the temperature of the hot water supplied from the water heater 30 that is heated at the minimum output does not become extremely high. . On the other hand, for example, when the minimum output of the water heater 30 is relatively high, the temperature rise width of the water due to the heating operation of the water heater 30 is relatively large. If not (that is, if the water heater 30 is not heated only for water having a relatively low temperature), the temperature of the hot water supplied from the water heater 30 operating at the minimum output is Can be extremely hot.

ところが本実施形態では、電源制御部１５が、どのような設定温度を境にして上記切換部の動作を切り換えるのか、即ち、どのような設定温度を境にして給湯器３０が加熱作動する又は加熱作動しないかを切り換えるのかが、温度受付部１６が受け付けた温度値に応じて変更される。つまり、上記設定温度を、給湯器３０の最低出力に応じて好ましい値に任意に変更できる。その結果、最低出力で加熱作動している給湯器３０から給湯される湯の温度が極めて高温になるといった問題の発生を回避できる。   However, in the present embodiment, the preset temperature at which the power supply controller 15 switches the operation of the switching unit, that is, the preset temperature at which the water heater 30 is heated or heated. Whether to operate or not is changed according to the temperature value received by the temperature receiving unit 16. That is, the set temperature can be arbitrarily changed to a preferable value according to the minimum output of the water heater 30. As a result, it is possible to avoid the problem that the temperature of hot water supplied from the water heater 30 that is heated at the minimum output becomes extremely high.

本実施形態において、設定温度決定部１７は、温度受付部１６が受け付けた温度値をそのまま上記設定温度に決定するのでもよいが、温度受付部１６が受け付けた温度値をそのまま上記設定温度に決定するのでもよいが、温度受付部１６が受け付けた目標給湯温度よりも所定温度だけ低い値を設定温度に決定してもよい。   In the present embodiment, the set temperature determination unit 17 may determine the temperature value received by the temperature receiving unit 16 as it is as the set temperature, but determines the temperature value received by the temperature receiving unit 16 as it is as the set temperature. However, a value lower than the target hot water supply temperature received by the temperature receiving unit 16 by a predetermined temperature may be determined as the set temperature.

＜第３実施形態＞
第３実施形態の給湯器用電源装置１０Ｃ（１０）は、電源制御部１５が、給水路７を流れる水の温度だけでなく、単位時間当たりの水の流量なども考慮して切換部１３の動作を制御する点で上記実施形態と異なっている。以下に第３実施形態の給湯器用電源装置１０Ｃの構成について説明するが、上記実施形態と同様の構成については説明を省略する。 <Third Embodiment>
In the water heater power supply device 10C (10) of the third embodiment, the power supply control unit 15 operates the switching unit 13 in consideration of not only the temperature of the water flowing through the water supply channel 7 but also the flow rate of water per unit time. This is different from the above embodiment in that it is controlled. Although the structure of the power supply device 10C for hot water heaters of 3rd Embodiment is demonstrated below, description is abbreviate | omitted about the structure similar to the said embodiment.

図４は、第３実施形態の給湯器用電源装置１０Ｃの構成を示す図である。図示するように、本実施形態の給湯器用電源装置１０Ｃは、給湯器３０内に導入される前の給水路７を流れる水の単位時間当たりの流量を測定する流量測定部１８を更に備える。そして、電源制御部１５は、温度測定部１４が測定した水の温度と、流量測定部１８が測定した水の流量と、給湯器３０が最低出力で加熱作動したときに水に与えられる最低熱量とに基づいて、給湯器３０が最低出力で加熱作動したときに予測される予測水温を導出し、当該予測水温が設定上限温度未満であるとき、入力部１１と出力部１２との間が電気的に接続されるように切換部１３を動作させて主電源５から供給される電力を給湯器３０の受電部３１に供給させ、並びに、予測水温が設定上限温度以上であるとき、入力部１１と出力部１２との間が電気的に解列されるように切換部１３を動作させて主電源５から供給される電力を給湯器３０の受電部３１に供給させないように構成されている。   FIG. 4 is a diagram illustrating a configuration of a water heater power supply device 10C according to the third embodiment. As shown in the figure, the water heater power supply device 10 </ b> C of the present embodiment further includes a flow rate measuring unit 18 that measures the flow rate per unit time of water flowing through the water supply path 7 before being introduced into the water heater 30. And the power supply control part 15 is the minimum heat amount given to water when the temperature of the water which the temperature measurement part 14 measured, the flow volume of the water which the flow volume measurement part 18 measured, and the water heater 30 heat-activates by the minimum output. Based on the above, a predicted water temperature that is predicted when the water heater 30 is heated at the minimum output is derived, and when the predicted water temperature is lower than the set upper limit temperature, there is an electrical connection between the input unit 11 and the output unit 12. When the switching unit 13 is operated so as to be connected, the power supplied from the main power supply 5 is supplied to the power receiving unit 31 of the water heater 30, and when the predicted water temperature is equal to or higher than the set upper limit temperature, the input unit 11 The switching unit 13 is operated so as to be electrically disconnected from the output unit 12 so that the power supplied from the main power supply 5 is not supplied to the power receiving unit 31 of the water heater 30.

本実施形態では、給湯器用電源装置１０Ｃが有する記憶装置（図示せず）に、給湯器３０が最低出力で加熱作動したときに水に与えられる最低熱量を予め記憶させている。その結果、電源制御部１５は、温度測定部１４が測定した水の温度と、流量測定部１８が測定した水の流量と、給湯器３０が最低出力で加熱作動したときに水に与えられる最低熱量とに基づいて、給湯器３０が最低出力で加熱作動したときに予測される予測水温を導出できる。   In the present embodiment, the minimum amount of heat given to the water when the water heater 30 is heated and operated at the minimum output is stored in advance in a storage device (not shown) included in the water heater power supply device 10C. As a result, the power supply control unit 15 determines the temperature of the water measured by the temperature measurement unit 14, the flow rate of water measured by the flow rate measurement unit 18, and the minimum given to the water when the water heater 30 is heated and operated at the minimum output. Based on the amount of heat, the predicted water temperature predicted when the water heater 30 is heated and operated at the minimum output can be derived.

そして、電源制御部１５は、上記予測水温が設定上限温度未満であるとき、入力部１１と出力部１２との間が電気的に接続されるように切換部１３を動作させて主電源５から供給される電力を給湯器３０の受電部３１に供給させる。その結果、給湯器３０を構成する電気機器は動作できるので、給湯制御部３２は、流量センサ３５で測定される水の量が設定値以上になると、給湯温度センサ３６が測定する水の温度が目標給湯温度になるように、加熱部３３の加熱動作を制御する。そして、給湯器３０で加熱された後の湯水が給湯端末６から給湯される。このとき、給湯器３０が最低出力で加熱作動すれば、給湯器３０によって加熱された後の水の温度が設定上限温度以上になることは無い（即ち、極めて高温になることはない）と予測される。
これに対して、電源制御部１５は、上記予測水温が設定上限温度以上であるとき、入力部１１と出力部１２との間が電気的に解列されるように切換部１３を動作させて主電源５から供給される電力を給湯器３０の受電部３１に供給させない。その結果、給湯器３０を構成する電気機器は動作できないので、給湯器３０は加熱作動できず、貯湯装置２０から出湯されたままの湯水が給湯端末６から給湯されることになる。 Then, when the predicted water temperature is lower than the set upper limit temperature, the power supply control unit 15 operates the switching unit 13 so that the input unit 11 and the output unit 12 are electrically connected to each other from the main power supply 5. The supplied power is supplied to the power receiving unit 31 of the water heater 30. As a result, since the electrical equipment that constitutes the water heater 30 can operate, the hot water controller 32 determines the temperature of the water measured by the hot water temperature sensor 36 when the amount of water measured by the flow rate sensor 35 exceeds a set value. The heating operation of the heating unit 33 is controlled so as to reach the target hot water supply temperature. Then, the hot water heated by the water heater 30 is supplied from the hot water supply terminal 6. At this time, if the water heater 30 is heated at the minimum output, the temperature of the water heated by the water heater 30 is predicted not to be higher than the set upper limit temperature (that is, not extremely high). Is done.
In contrast, when the predicted water temperature is equal to or higher than the set upper limit temperature, the power supply control unit 15 operates the switching unit 13 so that the input unit 11 and the output unit 12 are electrically disconnected. The power supplied from the main power supply 5 is not supplied to the power receiving unit 31 of the water heater 30. As a result, since the electrical equipment that constitutes the water heater 30 cannot operate, the water heater 30 cannot be heated and hot water that has been discharged from the hot water storage device 20 is supplied from the hot water supply terminal 6.

このように、本実施形態の給湯器用電源装置１０Ｃを用いることで、給水路７を介して導入される水の量が設定値以上になると加熱作動するという給湯器３０に固有の動作に変更を加えることなく、給湯器３０が最低出力で加熱作動したときに予測される予測水温が設定上限温度未満である水に対して給湯器３０で加熱され、予測水温が設定上限温度以上である水に対して給湯器３０で加熱されないことになる。従って、無駄なエネルギー消費を回避させることができる給湯器用電源装置１０Ｃ及び給湯システムを提供できる。   In this way, by using the water heater power supply device 10C of the present embodiment, a change is made to the operation unique to the water heater 30 that performs the heating operation when the amount of water introduced through the water supply channel 7 exceeds a set value. Without adding, the predicted water temperature predicted when the water heater 30 is heated at the minimum output is heated by the water heater 30 for water whose temperature is lower than the set upper limit temperature, and the predicted water temperature is higher than the set upper limit temperature. On the other hand, the water heater 30 is not heated. Therefore, it is possible to provide a hot water supply power supply device 10C and a hot water supply system that can avoid wasteful energy consumption.

＜別実施形態＞
＜１＞
上記実施形態では、給湯器用電源装置の構成や給湯システムの構成などについて具体例を挙げながら説明したが、それらの構成は適宜変更可能である。
例えば、上記実施形態では、給湯器３０がガスなどの燃料を燃焼させる燃焼式の給湯器である場合を例示したが、給湯器３０が、通電して熱（ジュール熱）を発生させる電気式の給湯器であってもよい。 <Another embodiment>
<1>
In the above embodiment, the configuration of the power supply device for the hot water heater and the configuration of the hot water supply system have been described with specific examples.
For example, in the above-described embodiment, the case where the water heater 30 is a combustion type water heater that combusts fuel such as gas is exemplified. However, the water heater 30 is electrically operated to generate heat (Joule heat). It may be a water heater.

＜２＞
上記実施形態では、主電源５が電力会社などの電力系統である場合を例示したが、他の装置を主電源５として利用することもできる。
例えば、熱源１が熱と電気とを併せて発生させる熱電併給装置である場合、即ち、熱源１が、燃料電池発電装置や、エンジンとそのエンジンによって駆動される発電機とを備えてエンジンの排熱と発電機の発電電力とを利用するようなガスエンジンコージェネレーション装置である場合、その熱源１としての熱電併給装置を主電源５として利用することもできる。この場合、熱源１としての熱電併給装置を上記電力系統に連系させ、熱源１としての熱電併給装置と上記電力系統との両方を主電源５として利用することもできる。 <2>
In the above embodiment, the case where the main power source 5 is a power system such as an electric power company is illustrated, but other devices can be used as the main power source 5.
For example, when the heat source 1 is a combined heat and power generation device that generates heat and electricity together, that is, the heat source 1 includes a fuel cell power generation device, an engine, and a generator driven by the engine. In the case of a gas engine cogeneration apparatus that uses heat and power generated by a generator, the combined heat and power supply apparatus as the heat source 1 can be used as the main power supply 5. In this case, a combined heat and power device as the heat source 1 can be linked to the power system, and both the combined heat and power device as the heat source 1 and the power system can be used as the main power supply 5.

＜３＞
上記実施形態では、温度などの数値を具体的に例示したが、それらの数値は適宜変更可能である。
例えば、上記実施形態では、貯湯装置２０から出湯されるときの上記設定出湯温度が４５℃である例や、給湯器用電源装置１０で切換部１３の動作が切り換わるときの上記設定温度が４０℃である例などを記載したが、それらの値は適宜変更可能である。但し、貯湯装置２０から出湯されるときの上記設定出湯温度は、給湯器用電源装置１０で切換部１３の動作が切り換わるときの上記設定温度よりも高いことが好ましい。貯湯装置２０から出湯される湯の温度が上記設定温度よりも常時低くなると、給湯用電源装置１０の電源制御部１５は、入力部１１と出力部１２との間が電気的に接続されるように切換部１３を動作させ続けてしまう、即ち、給湯器３０の受電部３１には常時電力が供給され続けてしまうからである。 <3>
In the above embodiment, numerical values such as temperature are specifically exemplified, but these numerical values can be appropriately changed.
For example, in the embodiment, the set hot water temperature when the hot water is discharged from the hot water storage device 20 is 45 ° C., or the set temperature when the operation of the switching unit 13 is switched in the hot water supply power device 10 is 40 ° C. Although the example which is is described, those values can be changed suitably. However, the set hot water temperature when the hot water is discharged from the hot water storage device 20 is preferably higher than the set temperature when the operation of the switching unit 13 is switched in the water heater power supply device 10. When the temperature of hot water discharged from the hot water storage device 20 is constantly lower than the set temperature, the power supply control unit 15 of the hot water supply power supply device 10 is electrically connected between the input unit 11 and the output unit 12. This is because the switching unit 13 continues to be operated, that is, the power receiving unit 31 of the water heater 30 is always supplied with electric power.

本発明は、無駄なエネルギー消費を回避させることができる給湯器用電源装置及び給湯システムに利用できる。   INDUSTRIAL APPLICATION This invention can be utilized for the power supply device and hot water supply system for hot water heaters which can avoid useless energy consumption.

１ 熱源
５ 主電源
７ 給水路
１０ 給湯器用電源装置
１１ 入力部
１２ 出力部
１３ 切換部
１４ 温度測定部
１５ 電源制御部
１６ 温度受付部
１７ 設定温度決定部
１８ 流量測定部
２０ 貯湯装置
３０ 給湯器
３１ 受電部 DESCRIPTION OF SYMBOLS 1 Heat source 5 Main power supply 7 Water supply path 10 Water heater power supply device 11 Input part 12 Output part 13 Switching part 14 Temperature measurement part 15 Power supply control part 16 Temperature reception part 17 Set temperature determination part 18 Flow rate measurement part 20 Hot water storage apparatus 30 Water heater 31 Power receiving unit

Claims (4)

給水路を介して導入される水の量が設定値以上になると加熱作動する給湯器の受電部に電力を供給する給湯器用電源装置であって、
主電源から供給される電力が入力される入力部と、
前記給湯器の前記受電部に電力を出力する出力部と、
前記入力部と前記出力部との間を、電気的に接続された状態又は電気的に解列された状態に切り換える切換部と、
前記給湯器内に導入される前の前記給水路を流れる水の温度を測定する温度測定部と、
前記温度測定部が測定した水の温度が設定温度未満であるとき、前記入力部と前記出力部との間が電気的に接続されるように前記切換部を動作させて前記主電源から供給される電力を前記給湯器の前記受電部に供給させ、並びに、前記温度測定部が測定した水の温度が前記設定温度以上であるとき、前記入力部と前記出力部との間が電気的に解列されるように前記切換部を動作させて前記主電源から供給される電力を前記給湯器の前記受電部に供給させない電源制御部とを備える給湯器用電源装置。 A power supply device for a water heater that supplies electric power to a power receiving unit of a water heater that is heated when a quantity of water introduced through a water supply channel exceeds a set value,
An input unit to which power supplied from the main power supply is input;
An output unit for outputting electric power to the power receiving unit of the water heater;
A switching unit that switches between the input unit and the output unit to an electrically connected state or an electrically disconnected state;
A temperature measuring unit for measuring the temperature of water flowing through the water supply channel before being introduced into the water heater;
When the temperature of the water measured by the temperature measuring unit is lower than a set temperature, the switching unit is operated so that the input unit and the output unit are electrically connected to be supplied from the main power source. When the temperature of the water measured by the temperature measuring unit is equal to or higher than the set temperature, the input unit and the output unit are electrically disconnected. A power supply device for a water heater, comprising: a power supply control unit that operates the switching unit so as to be arranged so as not to supply the power supplied from the main power source to the power receiving unit of the water heater. 温度値の入力を受け付ける温度受付部と、
前記温度受付部が受け付けた前記温度値を、又は、前記温度受付部が受け付けた前記温度値よりも所定温度だけ低い値を前記設定温度に決定する設定温度決定部とを備える請求項１に記載の給湯器用電源装置。 A temperature receiving unit for receiving an input of a temperature value;
The set temperature determination unit that determines the temperature value received by the temperature reception unit or a value that is lower than the temperature value received by the temperature reception unit by a predetermined temperature as the set temperature. Power supply for water heaters. 給水路を介して導入される水の量が設定値以上になると加熱作動する給湯器の受電部に電力を供給する給湯器用電源装置であって、
主電源から供給される電力が入力される入力部と、
前記給湯器の前記受電部に電力を出力する出力部と、
前記入力部と前記出力部との間を、電気的に接続された状態又は電気的に解列された状態に切り換える切換部と、
前記給湯器内に導入される前の前記給水路を流れる水の温度を測定する温度測定部と、
前記給湯器内に導入される前の前記給水路を流れる水の単位時間当たりの流量を測定する流量測定部と、
前記温度測定部が測定した水の温度と、前記流量測定部が測定した水の流量と、前記給湯器が最低出力で加熱作動したときに水に与えられる最低熱量とに基づいて、前記給湯器が最低出力で加熱作動したときに予測される予測水温を導出し、当該予測水温が設定上限温度未満であるとき、前記入力部と前記出力部との間が電気的に接続されるように前記切換部を動作させて前記主電源から供給される電力を前記給湯器の前記受電部に供給させ、並びに、前記予測水温が前記設定上限温度以上であるとき、前記入力部と前記出力部との間が電気的に解列されるように前記切換部を動作させて前記主電源から供給される電力を前記給湯器の前記受電部に供給させない電源制御部とを備える給湯器用電源装置。 A power supply device for a water heater that supplies electric power to a power receiving unit of a water heater that is heated when a quantity of water introduced through a water supply channel exceeds a set value,
An input unit to which power supplied from the main power supply is input;
An output unit for outputting electric power to the power receiving unit of the water heater;
A switching unit that switches between the input unit and the output unit to an electrically connected state or an electrically disconnected state;
A temperature measuring unit for measuring the temperature of water flowing through the water supply channel before being introduced into the water heater;
A flow rate measuring unit for measuring a flow rate per unit time of water flowing through the water supply channel before being introduced into the water heater;
Based on the temperature of the water measured by the temperature measuring unit, the flow rate of the water measured by the flow rate measuring unit, and the minimum amount of heat given to the water when the water heater is heated and operated at the minimum output, the water heater The predicted water temperature predicted when the heating operation is performed at the minimum output is derived, and when the predicted water temperature is lower than the set upper limit temperature, the input unit and the output unit are electrically connected to each other. When the switching unit is operated to supply the power supplied from the main power source to the power receiving unit of the water heater, and when the predicted water temperature is equal to or higher than the set upper limit temperature, the input unit and the output unit A power supply device for a water heater, comprising: a power supply control unit that operates the switching unit so as to be electrically disconnected from each other so that power supplied from the main power supply is not supplied to the power receiving unit of the water heater. 請求項１〜３の何れか一項に記載の給湯器用電源装置と、熱源から排出された熱を温水として蓄え、当該温水を前記給水路を介して前記給湯器へと送出する貯湯装置と、前記給湯器とを備える給湯システム。   A power supply device for a hot water heater according to any one of claims 1 to 3, a hot water storage device for storing heat discharged from a heat source as hot water, and sending the hot water to the water heater via the water supply path, A hot water supply system comprising the water heater.
JP2014241293A 2014-11-28 2014-11-28 Power supply device for water heater and water heater system Pending JP2016102613A (en)

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