JP2011027298A - Hot water storage type hot water supply heating device - Google Patents

Hot water storage type hot water supply heating device Download PDF

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JP2011027298A
JP2011027298A JP2009171792A JP2009171792A JP2011027298A JP 2011027298 A JP2011027298 A JP 2011027298A JP 2009171792 A JP2009171792 A JP 2009171792A JP 2009171792 A JP2009171792 A JP 2009171792A JP 2011027298 A JP2011027298 A JP 2011027298A
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hot water
heating
temperature
storage tank
water storage
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JP5210259B2 (en
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Makoto Morita
誠 森田
Masaru Sasaki
勝 佐々木
Shigeki Murayama
成樹 村山
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Corona Corp
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    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12—Hot water central heating systems using heat pumps

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water storage type hot water supply heating device which carries out boiling operation while carrying out heating by intermediate-temperature water and in which an unfreezable water trap plug is automatically opened/closed. <P>SOLUTION: When hot water at a center part of a hot water storage tank 2 is the intermediate-temperature water, in heating-only operation, the intermediate-temperature water is made to flow in a heating heat exchanger 18 for heat radiation, and after that, the water is heated by a heat pump unit 24 to be the intermediate-temperature water before the heat radiation and is returned to the center part of the hot water storage tank 2. The heating-only operation can be performed while preventing considerable reduction of boiling efficiency. In heating-boiling simultaneous operation, the intermediate temperature water is heated to be high-temperature water after heat radiation in the heating heat exchanger 18 and is returned to an upper part of the hot water storage tank 2, which allows to perform the heating-boiling simultaneous operation while preventing the reduction of the boiling efficiency, rather than the case that the intermediate temperature water is just heated to the temperature of the high-temperature water at the boiling temperature. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、貯湯式給湯暖房装置に関するものである。   The present invention relates to a hot water storage type hot water supply and heating device.

従来よりこの種の貯湯式給湯装置においては、貯湯タンクの下部から水を取り出してヒートポンプユニットで沸き上げ、この沸き上げた湯を貯湯タンクの上部に取り入れることにより、湯と水との比重の差を利用して貯湯タンクの上部側から湯を貯湯させている。また、貯湯タンクの上部に配設した風呂用熱交換器に対して浴槽水を循環させて追い焚きする場合、貯湯タンクの上部の湯温が低下したときに、貯湯タンクの上下方向の中間部から湯水を取り出してヒートポンプで沸き上げ、この沸き上げた湯を貯湯タンクの上部に取り入れることにより、風呂用熱交換器の周辺の貯湯温度を素早く上昇させるようにしている（例えば、特許文献１参照）。   Conventionally, in this type of hot water storage water heater, water is taken out from the lower part of the hot water tank and boiled with a heat pump unit, and the heated hot water is taken into the upper part of the hot water tank so that the difference in specific gravity between hot water and water is high. The hot water is stored from the upper side of the hot water storage tank. In addition, when bath water is circulated to the bath heat exchanger installed at the upper part of the hot water tank and reheated, when the hot water temperature at the upper part of the hot water tank drops, the intermediate part in the vertical direction of the hot water tank The hot water is taken out from the water and boiled with a heat pump, and the heated water is taken into the upper part of the hot water storage tank so that the hot water temperature around the heat exchanger for the bath is quickly raised (for example, see Patent Document 1). ).

また、貯湯タンクに貯湯した湯を暖房に使用する給湯装置では、貯湯タンクの上部から取り出した湯を暖房用熱交換器に流して熱交換することで暖房し、この熱交換で温度低下した中温水を貯湯タンクの下部に取り入れている。また、貯湯タンクの下部から水を取り出してヒートポンプで沸き上げ、この沸き上げた湯を暖房用熱交換器に流して暖房したり、沸き上げた湯を貯湯タンクの上部と暖房用熱交換器との両方に流して貯湯タンクの上部に湯を貯湯しながら暖房を同時にしている。 In addition, in a hot water supply device that uses hot water stored in a hot water storage tank for heating, the hot water taken out from the upper part of the hot water storage tank flows through a heat exchanger for heating to exchange heat, and this heat exchange reduces the temperature. Hot water is taken into the bottom of the hot water storage tank. In addition, water is taken out from the lower part of the hot water storage tank and boiled with a heat pump, and the heated hot water is passed through a heating heat exchanger for heating, or the heated hot water is supplied to the upper part of the hot water storage tank and the heating heat exchanger. It is heated simultaneously while hot water is stored in the upper part of the hot water storage tank.

特開２００３−１６１５１８号公報JP 2003-161518 A

ところで、従来の貯湯式給湯装置においては、ヒートポンプで沸き上げた湯を貯湯と暖房とに同時に使用する場合、貯湯タンクの上部には湯の貯湯可能であるが、暖房用熱交換器を通った後の中温水を貯湯タンクの下部に戻すため、貯湯タンクの下部側の水温が上昇して中温水となってしまう。さらに、給湯により貯湯タンクの下部に水が入ってきても、貯湯と暖房とを同時に行っていると、貯湯タンクの下部側の水温が上昇して中温水となってしまう。そのため、暖房停止後の夜間時間帯での主な沸き上げでは、貯湯タンクの下部の中温水または少しの水および中温水を高温に沸き上げることになり、ヒートポンプユニットによる沸上効率（ＣＯＰ）が著しく悪化してしまう問題がある。   By the way, in the conventional hot water storage type hot water supply device, when hot water heated by a heat pump is used for both hot water storage and heating, hot water can be stored in the upper part of the hot water storage tank, but it passes through a heat exchanger for heating. Since the subsequent medium temperature water is returned to the lower part of the hot water storage tank, the water temperature on the lower side of the hot water storage tank rises to become intermediate temperature water. Furthermore, even if water enters the lower part of the hot water storage tank due to hot water supply, if the hot water storage and heating are performed at the same time, the water temperature on the lower side of the hot water storage tank rises and becomes medium hot water. Therefore, in the main boiling in the night time zone after the heating is stopped, the middle temperature water or a small amount of water and the middle temperature water below the hot water tank are heated to a high temperature, and the boiling efficiency (COP) by the heat pump unit is increased. There is a problem that gets worse.

特に、暖房の使用時間は人が家にいるときであるので、暖房で貯湯タンクの熱を使用しながら浴槽への湯張りやシャワーなどで給湯することになり、さらに通常は夜間時間帯の数時間前から暖房と給湯使用量とが増加するために、貯湯タンクの熱量が下がり、暖房と貯湯とを同時する頻度が増加し、貯湯タンクの下部に中温水ができてしまっていた。 In particular, since the heating hours are when people are at home, they use hot water from the hot water storage tanks to supply hot water to the bathtub or shower, and usually the number of night hours. Since heating and hot water usage increased from before the time, the amount of heat in the hot water storage tank decreased, the frequency of simultaneous heating and hot water storage increased, and medium hot water was created at the bottom of the hot water storage tank.

また、貯湯と暖房とを同時にしている場合に、シャワーなどにより貯湯タンク内の湯を使用すると、貯湯タンクの下部が中温水から水に変わり、そのときにヒートポンプユニットには中温水でなく水が供給されることになり、ヒートポンプユニットによる沸上温度が急激に低下して、暖房能力が低下してしまう問題がある。また、中温水でなく水から沸き上げた湯を使用するために、室外機の消費電力が多くなってしまうという問題があった。 When hot water is stored and heated at the same time, if the hot water in the hot water storage tank is used by a shower or the like, the lower part of the hot water storage tank changes from medium temperature water to water. Will be supplied, the boiling temperature by the heat pump unit will drop rapidly, and the heating capacity will be reduced. Further, since hot water boiled from water is used instead of medium-temperature water, there is a problem that the power consumption of the outdoor unit increases.

本発明は、このような点に鑑みなされたもので、貯湯タンクの中間部の中温水を効率的に使用し、沸上効率を向上できるとともに省エネルギ化できる給湯装置を提供することを目的とする。 This invention is made in view of such a point, It aims at providing the hot water supply apparatus which can use the intermediate temperature water of the intermediate part of a hot water storage tank efficiently, can improve a boiling-up efficiency, and can also save energy. To do.

本発明は上記課題を解決するため、請求項１では、湯水を加熱する加熱手段と、該加熱手段により加熱された湯水を貯湯する貯湯タンクと、該貯湯タンクの側面上下に複数設けられ貯湯タンク内の貯湯温度を検出する貯湯温度センサと、一端が貯湯タンク上部に接続され貯湯タンクから外部の蛇口へ出湯する出湯管と、一端が貯湯タンク底部に接続され貯湯タンクへ給水する給水管と、一端が貯湯タンク底部に接続され他端が加熱手段の入水側に接続された加熱往き管と、一端が加熱手段の出水側に接続され他端が貯湯タンク上部に接続された加熱戻り管とを備えると共に、暖房用熱交換器にて熱交換して加熱された熱媒を床暖装置に循環させることで暖房を行う暖房ユニットの暖房用熱交換器に貯湯タンク内の温水を流通させる貯湯式給湯暖房装置において、前記加熱戻り管に設けられた戻り切替弁に一端が接続され他端が貯湯タンク中央部に接続された中温水戻り管と、前記加熱往き管に設けられた低温水側切替弁に一端が接続され他端が加熱手段の上流側の加熱往き管に接続された往きバイパス管と、一端が低温水切替弁に接続され他端が暖房用熱交換器の一次側の入水側に接続された暖房往き管と、該暖房往き管に設けられた中温水側切替弁に一端が接続され他端が貯湯タンク中央部に接続された中温水出湯管とを備え、単独暖房運転で貯湯タンク中央部の温水が中温水の時、貯湯タンク中央部の中温水を中温水出湯管から中温水側切替弁を介して暖房用熱交換器に供給し、暖房用熱交換器で放熱して温度が下がった温水を加熱手段により放熱前の中温水の温度まで加熱して、加熱戻り管から戻り切替弁を介して中温水戻り管より貯湯タンク中央部に戻し、暖房沸き上げ同時運転で貯湯タンク中央部の温水が中温水の時、貯湯タンク中央部の中温水を中温水出湯管から中温水側切替弁を介して暖房用熱交換器に供給し、暖房用熱交換器で放熱して温度が下がった温水を加熱手段により沸き上げ温度の高温水の温度まで加熱して、加熱戻り管から戻り切替弁を介して貯湯タンク上部に戻すものである。   In order to solve the above-mentioned problems, the present invention provides a heating means for heating hot water, a hot water storage tank for storing hot water heated by the heating means, and a plurality of hot water storage tanks provided above and below the side surface of the hot water storage tank. A hot water storage temperature sensor for detecting the hot water storage temperature inside, a hot water discharge pipe for discharging one end of the hot water storage tank from the hot water storage tank to the external faucet, and a water supply pipe for supplying one end of the hot water storage tank to the hot water storage tank. A heating forward pipe with one end connected to the bottom of the hot water storage tank and the other end connected to the water inlet side of the heating means, and a heating return pipe with one end connected to the water outlet side of the heating means and the other end connected to the top of the hot water storage tank. A hot water storage type that distributes hot water in a hot water storage tank to a heating heat exchanger of a heating unit that heats by heating the heat medium heated by exchanging heat in a heat exchanger for heating to the floor heating device Hot water supply A hot water return pipe provided at one end of the return switching valve provided at the heating return pipe and the other end connected to a central portion of the hot water storage tank, and a low temperature water side switching valve provided at the heating forward pipe One end is connected to the other end and the other end is connected to the heating outlet pipe upstream of the heating means, and one end is connected to the low temperature water switching valve and the other end is connected to the inlet side of the primary side of the heating heat exchanger. A hot water storage pipe connected to the intermediate hot water side switching valve provided in the heating forward pipe, and a hot water hot water discharge pipe having the other end connected to the central portion of the hot water storage tank. When the hot water in the center of the tank is medium-temperature water, the medium-temperature water in the center of the hot water storage tank is supplied from the medium-temperature water outlet pipe to the heating heat exchanger via the medium-temperature water side switching valve, and radiated by the heating heat exchanger. The hot water whose temperature has been lowered is heated to the temperature of the medium temperature water before heat dissipation by the heating means. Return from the heating return pipe to the center of the hot water tank through the return switching valve and return to the center of the hot water tank. The hot water is supplied from the hot water outlet pipe to the heat exchanger for heating through the intermediate hot water side switching valve, and the hot water whose temperature is reduced by radiating heat from the heating heat exchanger is heated to the boiling water temperature by the heating means. The heating return pipe returns to the upper part of the hot water storage tank via the return switching valve.

また、請求項２では、前記請求項１に於いて、単独暖房運転で貯湯タンク下部の温水が中温水の時、貯湯タンク下部の中温水を加熱往き管から低温水側切替弁及び中温水側切替弁を介して暖房用熱交換器に供給し、暖房用熱交換器で放熱して温度が下がった温水を加熱手段により放熱前の中温水の温度まで加熱して、加熱戻り管から戻り切替弁を介して中温水戻り管より貯湯タンク中央部に戻し、暖房沸き上げ同時運転で貯湯タンク下部の温水が中温水の時、貯湯タンク下部の中温水を加熱往き管から低温水側切替弁及び中温水側切替弁を介して暖房用熱交換器に供給し、暖房用熱交換器で放熱して温度が下がった温水を加熱手段により沸き上げ温度の高温水の温度まで加熱して、加熱戻り管から戻り切替弁を介して貯湯タンク上部に戻すものである。   Further, in claim 2, when the hot water in the lower part of the hot water storage tank is medium temperature water in the independent heating operation in the above first aspect, the intermediate temperature water in the lower part of the hot water storage tank is transferred from the heating forward pipe to the low temperature water side switching valve and the intermediate hot water side. Supply to the heat exchanger for heating through the switching valve, heat the hot water whose temperature is reduced by the heat exchanger for heating to the temperature of the medium temperature water before heat dissipation by the heating means, and return from the heating return pipe When the warm water at the bottom of the hot water tank is at the middle temperature, and the warm water at the bottom of the hot water tank is at the middle temperature, and the warm water at the bottom of the hot water tank is at the low temperature water side switching valve and Supply to the heat exchanger for heating via the medium temperature water switching valve, heat the hot water whose temperature has been reduced by radiating heat from the heating heat exchanger to the boiling water temperature by the heating means, and return to heating Return from the pipe to the top of the hot water storage tank via the return switching valve It is.

また、請求項３では、前記請求項２に於いて、単独暖房運転及び暖房沸き上げ同時運転で貯湯タンク中央部及び下部の温水が低温水の時、中温水側切替弁により暖房往き管を閉塞して暖房運転を停止すると共に、貯湯タンク下部の低温水を加熱往き管から低温水側切替弁を介して往きバイパス管により加熱手段に入水して加熱手段により沸き上げ温度の高温水の温度まで加熱し、その高温水を加熱戻り管から戻り切替弁を介して中温水戻り管より貯湯タンク中央部に戻し、貯湯タンク中央部の温水が中温水にまで温度上昇したら中温水側切替弁により暖房往き管を開放して暖房運転を再開するものである。   Further, in claim 3, in the above-mentioned claim 2, when the hot water in the central part and the lower part of the hot water storage tank is low-temperature water in the single heating operation and the simultaneous heating operation, the heating / outward pipe is blocked by the intermediate hot water side switching valve. Then, the heating operation is stopped and the low temperature water at the bottom of the hot water storage tank enters the heating means from the heating forward pipe through the low temperature water side switching valve to the heating means by the heating means until the temperature of the boiling water rises to the high temperature water temperature. Heat and return the hot water from the heating return pipe through the return switching valve to the center of the hot water storage tank via the return switching valve. The forward pipe is opened and the heating operation is resumed.

この発明の請求項１によれば、貯湯タンク中央部の温水が中温水の状態で単独暖房運転を行う場合は、貯湯タンク中央部の中温水を暖房用熱交換器に供給して放熱させ、放熱により温度低下した湯水を加熱手段により放熱前の中温水の温度まで加熱して貯湯タンク中央部に戻すので、貯湯タンク上部の高温水を使用することなく暖房運転を行うことができると共に、放熱により温度低下した湯水を放熱前の中温水の温度まで加熱することで著しく沸上効率（ＣＯＰ）が低下するのを防止することができるものである。   According to claim 1 of the present invention, when the hot water in the central portion of the hot water storage tank performs the single heating operation in the state of the intermediate temperature water, the intermediate warm water in the central portion of the hot water storage tank is supplied to the heating heat exchanger to dissipate heat, The hot water that has fallen in temperature due to heat dissipation is heated to the temperature of the medium temperature water before heat dissipation by the heating means and returned to the center of the hot water storage tank, so that heating operation can be performed without using high temperature water at the top of the hot water storage tank, and heat dissipation. It is possible to prevent the boiling efficiency (COP) from being remarkably reduced by heating the hot water whose temperature has been reduced to the temperature of the medium temperature water before heat dissipation.

また、貯湯タンク中央部の温水が中温水の状態で暖房沸き上げ同時運転を行う場合は、貯湯タンク中央部の中温水を暖房用熱交換器に供給して放熱させ、放熱により温度低下した湯水を加熱手段により沸き上げ温度の高温水の温度まで加熱して、加熱戻り管から戻り切替弁を介して貯湯タンク上部に戻すので、中温水を暖房に有効に利用して温度を低下させ、その温度が低下した湯水を沸き上げ温度の高温水の温度まで加熱することで、中温水をそのまま沸き上げ温度の高温水の温度まで加熱するのに比べて沸上効率（ＣＯＰ）が低下するのを防止することができるものである。   In addition, when heating and boiling operation is performed simultaneously with warm water in the center of the hot water storage tank in the state of medium temperature water, the hot water in the middle of the hot water storage tank is supplied to the heat exchanger for heating to dissipate the water, and the temperature has decreased due to heat dissipation. Is heated to the temperature of the hot water of the boiling temperature by the heating means, and returned to the upper part of the hot water storage tank from the heating return pipe via the return switching valve. Heating hot water whose temperature has decreased to the boiling water temperature of high-temperature water reduces the boiling efficiency (COP) compared to heating medium-temperature water to the boiling water temperature of high-temperature water as it is. It can be prevented.

又本発明の請求項２に記載の貯湯式給湯装置によれば、請求項１の貯湯式給湯暖房装置において、貯湯タンク下部の温水が中温水の状態で単独暖房運転を行う場合は、貯湯タンク下部の中温水を暖房用熱交換器に供給して放熱させ、放熱により温度低下した湯水を加熱手段により放熱前の中温水の温度まで加熱して貯湯タンク中央部に戻すので、貯湯タンク上部の高温水を使用することなく暖房運転を行うことができると共に、放熱により温度低下した湯水を放熱前の中温水の温度まで加熱することで著しく沸上効率（ＣＯＰ）が低下するのを防止することができるものである。   According to claim 2 of the present invention, in the hot water storage type hot water supply and heating device of claim 1, when the hot water in the lower part of the hot water storage tank is in the state of medium hot water, the hot water storage tank is used. The lower intermediate temperature water is supplied to the heating heat exchanger to dissipate heat, and the hot water whose temperature has decreased due to heat dissipation is heated to the temperature of the intermediate temperature water before heat dissipation by the heating means and returned to the center of the hot water tank. Heating operation can be performed without using high-temperature water, and the boiling efficiency (COP) is prevented from being significantly reduced by heating hot water whose temperature has been reduced by heat dissipation to the temperature of medium-temperature water before heat dissipation. It is something that can be done.

また、貯湯タンク下部の温水が中温水の状態で暖房沸き上げ同時運転を行う場合は、貯湯タンク下部の中温水を暖房用熱交換器に供給して放熱させ、放熱により温度低下した湯水を加熱手段により沸き上げ温度の高温水の温度まで加熱して、加熱戻り管から戻り切替弁を介して貯湯タンク上部に戻すので、中温水を暖房に有効に利用して温度を低下させ、その温度が低下した湯水を沸き上げ温度の高温水の温度まで加熱することで、中温水をそのまま沸き上げ温度の高温水の温度まで加熱するのに比べて沸上効率（ＣＯＰ）が低下するのを防止することができ、更に暖房運転を行いながら貯湯タンク内の中温水を減らして高温水を増やし、貯湯タンク内の湯水の全量を高温水に沸き上げられるものである。   In addition, when performing heating and boiling simultaneous operation with warm water at the bottom of the hot water storage tank in the state of medium warm water, supply the warm water at the bottom of the hot water storage tank to the heat exchanger for heating to dissipate the heat and heat the hot water whose temperature has decreased due to heat radiation. The water is heated up to the boiling water temperature by the means and returned to the upper part of the hot water storage tank through the return switching valve from the heating return pipe, so that the temperature is lowered by effectively using the medium temperature water for heating. By heating the lowered hot water to the boiling water temperature of the high temperature water, the boiling efficiency (COP) is prevented from lowering compared to heating the medium temperature water to the boiling water temperature of the high temperature water as it is. Further, while performing the heating operation, the medium temperature water in the hot water storage tank can be reduced to increase the high temperature water, and the entire amount of hot water in the hot water storage tank can be boiled to high temperature water.

又本発明の請求項３に記載の貯湯式給湯装置によれば、請求項２の貯湯式給湯暖房装置において、貯湯タンク中央部及び下部の温水が低温水の状態で単独暖房運転又は暖房沸き上げ同時運転を行うと、暖房用熱交換器に低温水を供給してしまい、それにより暖房感が著しく損ねてしまうので一旦暖房運転を停止し、貯湯タンク下部の低温水を沸き上げ温度の高温水の温度まで加熱してその高温水を貯湯タンク中央部に戻し、貯湯タンク中央部の温水が中温水にまで温度上昇したら暖房運転を再開するので、大量の給湯運転により短時間に貯湯タンクの中央部まで低温水となった場合でも、暖房運転への支障を極力小さくしつつ短時間で暖房運転を再開できるものである。   According to claim 3 of the present invention, in the hot water storage hot water heater according to claim 2, the hot water in the central part and the lower part of the hot water tank is in the state of low temperature water or is heated alone or heated. If simultaneous operation is performed, low-temperature water is supplied to the heat exchanger for heating, and thereby the feeling of heating is remarkably impaired, so the heating operation is temporarily stopped, and the low-temperature water at the bottom of the hot water tank is boiled. The hot water is returned to the center of the hot water tank and the hot water is restarted when the temperature of the hot water in the hot water tank rises to medium hot water. Even when the temperature of the water becomes low, the heating operation can be resumed in a short time while minimizing the obstacle to the heating operation.

この発明の一実施例を付した貯湯式給湯暖房装置の概略構成図。BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram of the hot water storage type hot-water supply / heater apparatus which attached | subjected one Example of this invention. 同単独沸き上げ運転を説明するためのフローチャート図。The flowchart for demonstrating the same boiling operation. 同単暖房運転を説明するためのフローチャート図。The flowchart for demonstrating the same single heating operation. 同単暖房沸き上げ同時運転を説明するためのフローチャート図。The flowchart figure for demonstrating the same single heating boiling simultaneous operation.

次に、本発明に係る発明の一実施形態を図１に基づいて説明する。
１は貯湯タンクユニットで、湯水を貯湯する貯湯タンク２と、貯湯タンク２底部に接続された給水管３と、貯湯タンク２底部に接続された加熱往き管４と、貯湯タンク２頂部に接続された出湯管５と、貯湯タンク２頂部に接続された加熱戻り管６とが接続され、貯湯タンク２の側面上下に複数設けられ貯湯タンク２内の貯湯温度を検出する貯湯温度センサ７ａ〜ｅが設けられている。 Next, an embodiment of the present invention will be described with reference to FIG.
A hot water storage tank unit 1 is connected to a hot water storage tank 2 for storing hot water, a water supply pipe 3 connected to the bottom of the hot water storage tank 2, a heating pipe 4 connected to the bottom of the hot water storage tank 2, and a top of the hot water storage tank 2. A hot water storage temperature sensor 7 a-e is connected to the hot water discharge pipe 5 and a heating return pipe 6 connected to the top of the hot water storage tank 2, and a plurality of hot water storage temperature sensors 7 a to 7 e are provided on the upper and lower sides of the hot water storage tank 2 to detect the hot water storage temperature in the hot water storage tank 2. Is provided.

前記加熱往き管４には低温水側切替弁８を介して往きバイパス管９と暖房往き管１０が接続され、該暖房往き管１０には貯湯タンク２からの温水の温度を検知する暖房往き温度センサ１１が設けられると共に、暖房往き管１０には中温水側切替弁１２を介して一端が貯湯タンク２中央部に接続されている中温水出湯管１３が接続され、前記加熱戻り管６には戻り切替弁１４を介して一端が貯湯タンク２中央部に接続されている中温水戻り管１５が接続されているものである。   An outgoing bypass pipe 9 and a heating outgoing pipe 10 are connected to the heating outgoing pipe 4 via a low temperature water side switching valve 8, and the heating outgoing pipe 10 detects the temperature of the hot water from the hot water storage tank 2. A sensor 11 is provided, and an intermediate hot water hot water discharge pipe 13 having one end connected to the center of the hot water storage tank 2 is connected to the heating forward pipe 10 via an intermediate hot water side switching valve 12, and the heating return pipe 6 is connected to the heating return pipe 6. An intermediate hot water return pipe 15, one end of which is connected to the central portion of the hot water storage tank 2, is connected via a return switching valve 14.

１６は暖房ユニットで、貯湯タンク２からの湯水を流す暖房往き管１０と、該暖房往き管１０からの湯水と床暖房装置１７からの熱媒とを熱交換する暖房用熱交換器１８と、該暖房用熱交換器１８で放熱した湯水を加熱往き管４に戻す暖房戻り管１９と、暖房用熱交換器１８で加熱された熱媒を床暖装置１７に流す暖房回路往き管２０と、前記床暖装置１７で放熱された熱媒を暖房用熱交換器１８に流す暖房回路戻り管２１と、暖房ユニット１６内の熱媒を循環させる暖房用循環ポンプ２２と、暖房用熱交換器１８で加熱された熱媒の温度を検知する熱媒温度センサ２３とからなるものである。   Reference numeral 16 denotes a heating unit, a heating forward pipe 10 for flowing hot water from the hot water storage tank 2, a heating heat exchanger 18 for exchanging heat between the hot water from the heating forward pipe 10 and the heat medium from the floor heating device 17, A heating return pipe 19 for returning the hot water radiated by the heating heat exchanger 18 to the heating forward pipe 4, a heating circuit forward pipe 20 for flowing the heat medium heated by the heating heat exchanger 18 to the floor heating device 17, A heating circuit return pipe 21 that flows the heat medium radiated by the floor heating device 17 to the heating heat exchanger 18, a heating circulation pump 22 that circulates the heating medium in the heating unit 16, and the heating heat exchanger 18. And a heating medium temperature sensor 23 for detecting the temperature of the heating medium heated in step (b).

２４はヒートポンプユニットで、冷媒を圧縮吐出し回転数可変の圧縮機（図示せず）と、一次側に圧縮機からの冷媒が流通されると共に二次側に加熱往き管４からの水が流通し、高温高圧冷媒から放熱して水を加熱するための水冷媒熱交換器（図示せず）と、該水冷媒熱交換器からの冷媒を減圧膨張させる開度可変の減圧器（図示せず）と、該減圧器で減圧された冷媒を蒸発させる蒸発器（図示せず）と、該蒸発器に大気熱を供給するための回転数可変の送風機（図示せず）とを備えると共に、ヒートポンプユニット２４の入水側には加熱循環ポンプ２５により送られてきた湯水の温度を検出する入水温度センサ２６が設けられ、又ヒートポンプユニット２４の出水側にはヒートポンプユニット２４にて加熱された湯水の温度を検出する沸き上げ温度センサ２７が設けられているものである。   A heat pump unit 24 compresses and discharges the refrigerant and has a variable rotation speed (not shown). The refrigerant from the compressor is circulated on the primary side and the water from the heating forward pipe 4 is circulated on the secondary side. A water refrigerant heat exchanger (not shown) for radiating heat from the high-temperature and high-pressure refrigerant to heat the water, and a variable-pressure decompressor (not shown) for decompressing and expanding the refrigerant from the water-refrigerant heat exchanger. ), An evaporator (not shown) for evaporating the refrigerant decompressed by the decompressor, and a blower (not shown) with a variable rotation speed for supplying atmospheric heat to the evaporator, and a heat pump An incoming water temperature sensor 26 for detecting the temperature of hot water sent by the heating circulation pump 25 is provided on the incoming side of the unit 24, and the temperature of the hot water heated by the heat pump unit 24 is provided on the outgoing side of the heat pump unit 24. Detect boiling In which the lower temperature sensor 27 is provided.

次に、この貯湯式給湯暖房装置の作動について説明する。
まず沸き上げ運転は、図２に示すように、最初に貯湯温度センサ７ａ〜７ｅにより貯湯タンク２内の温水温度を検知し（Ｓ１）、それにより貯湯タンク２内の温水温度が所定温度未満かを判断し（Ｓ２）、貯湯タンク２内の温水温度が所定温度未満の場合は、沸き上げ運転を開始する。（Ｓ３）
つまり例えば全量沸き上げに設定されていた場合、貯湯タンク２内の下部（図１でのａ）の温水温度を検知する貯湯温度センサ７ｅの検知温度が沸き上げ温度より低い場合、沸き上げ運転を開始するものである。 Next, the operation of this hot water storage type hot water supply and heating apparatus will be described.
First, in the boiling operation, as shown in FIG. 2, the hot water temperature in the hot water storage tank 2 is first detected by the hot water storage temperature sensors 7a to 7e (S1), so that the hot water temperature in the hot water storage tank 2 is lower than a predetermined temperature. (S2), and when the hot water temperature in the hot water storage tank 2 is lower than the predetermined temperature, the boiling operation is started. (S3)
That is, for example, when the whole amount is set to boiling, when the temperature detected by the hot water storage temperature sensor 7e that detects the temperature of the hot water in the lower part (a in FIG. 1) in the hot water storage tank 2 is lower than the boiling temperature, the boiling operation is performed. It is what is started.

沸き上げ運転が開始されると、貯湯タンク２内の下部の温水が貯湯タンク２の底部から加熱往き管４を通り、低温水側切替弁８により往きバイパス管９を通ってヒートポンプユニット２４により加熱されて高温水となり、加熱戻り管６を通り、戻り切替弁１４により貯湯タンク２内の上部に供給されるものである。   When the boiling operation is started, the hot water in the lower part of the hot water storage tank 2 passes through the heating forward pipe 4 from the bottom of the hot water storage tank 2 and is heated by the heat pump unit 24 through the forward bypass pipe 9 by the low temperature water side switching valve 8. Then, it becomes hot water, passes through the heating return pipe 6, and is supplied to the upper part of the hot water storage tank 2 by the return switching valve 14.

そして貯湯タンク２内の温水温度が所定温度以上になったら（Ｓ４）、沸き上げ運転を終了する（Ｓ５）もので、例えば全量沸き上げに設定されていた場合、貯湯タンク２内の下部の温水温度を検知する貯湯温度センサ７ｅの検知温度が沸き上げ温度に達したら沸き上げ運転を終了するものである。
又、（Ｓ２）で貯湯タンク２内の温水温度が所定温度以上の場合は、沸き上げ運転が不要となり、沸き上げ運転を行わないものである。 When the hot water temperature in the hot water storage tank 2 becomes equal to or higher than a predetermined temperature (S4), the boiling operation is terminated (S5). For example, when the whole amount is set to be heated, the hot water in the lower part in the hot water storage tank 2 is set. When the temperature detected by the hot water storage temperature sensor 7e that detects the temperature reaches the boiling temperature, the boiling operation is terminated.
When the hot water temperature in the hot water storage tank 2 is equal to or higher than the predetermined temperature in (S2), the boiling operation is not necessary and the boiling operation is not performed.

次に、暖房運転は、図３に示すように、最初に貯湯温度センサ７ｅにより貯湯タンク２内の下部の温水温度を検知し（Ｓ６）、それにより貯湯タンク２内の下部の温水温度が８０度以上の高温水かを判断し（Ｓ７）、貯湯タンク２内の下部の温水温度が高温水の場合は、貯湯タンク２内の全温水が高温水でヒートポンプユニット２４による加熱は不要と判断して、貯湯タンク２内の温水の熱量のみによる蓄熱暖房運転を開始する。（Ｓ８）   Next, in the heating operation, as shown in FIG. 3, first, the hot water temperature in the lower part of the hot water storage tank 2 is detected by the hot water storage temperature sensor 7e (S6). If the hot water temperature in the lower part of the hot water storage tank 2 is high temperature water, the hot water in the hot water storage tank 2 is determined to be hot water and heating by the heat pump unit 24 is unnecessary. Then, the heat storage heating operation using only the amount of heat of the hot water in the hot water storage tank 2 is started. (S8)

それにより、貯湯タンク２内の下部の温水を貯湯タンク２の底部から加熱往き管４を通り、低温水側切替弁８により暖房往き管１０を通って暖房用熱交換器１８で放熱する。（Ｓ９）
この時、暖房用熱交換器１８で加熱された熱媒の温度が所定の温度となるように暖房用循環ポンプ２２と加熱循環ポンプ２５の回転数が制御されるものである。 Accordingly, the hot water in the lower part of the hot water storage tank 2 passes through the heating forward pipe 4 from the bottom of the hot water storage tank 2, and is radiated by the heating heat exchanger 18 through the heating forward pipe 10 by the low temperature water side switching valve 8. (S9)
At this time, the rotation speeds of the heating circulation pump 22 and the heating circulation pump 25 are controlled so that the temperature of the heat medium heated by the heating heat exchanger 18 becomes a predetermined temperature.

そして暖房用熱交換器１８で放熱した温水は、暖房戻り管１９から加熱往き管４に戻って、ヒートポンプユニット２４により加熱されずにそのまま加熱戻り管６から戻り切替弁１４により中温水戻り管１５を通って貯湯タンク２中央部に戻るものである。（Ｓ１０）   Then, the hot water radiated by the heating heat exchanger 18 returns to the heating forward pipe 4 from the heating return pipe 19, and is not heated by the heat pump unit 24 as it is from the heating return pipe 6 to the intermediate hot water return pipe 15 by the return switching valve 14. It passes through the hot water storage tank 2 through the center. (S10)

それにより温度の下がった温水が貯湯タンク２中央部に戻ることで、貯湯タンク２の中央部の温水と下部の温水との間に温度差が生じ、貯湯タンク２の中央部の温水と下部の温水との間で対流が生じて、貯湯タンク２の中央部から下部にかけての温水の温度が低下してくる。   As a result, the temperature difference between the hot water at the center of the hot water storage tank 2 and the hot water at the bottom of the hot water storage tank 2 is generated by returning the hot water whose temperature has decreased to the central part of the hot water storage tank 2. Convection occurs with the hot water, and the temperature of the hot water from the center to the bottom of the hot water storage tank 2 decreases.

そして貯湯タンク２の中央部（図１でのｂ）の温水の温度が中温水、つまり５０度くらいまで低下したかを判断し（Ｓ１１）、中温水の温度まで低下していなければ（Ｓ７）に戻り、中温水の温度まで低下していれば、蓄熱暖房運転からヒートポンプユニット２４により温水を加熱しながら暖房を行う直暖暖房運転に切り換える必要があると判断して、直暖暖房運転を開始する。（Ｓ１２）   Then, it is determined whether or not the temperature of the hot water in the central portion of the hot water storage tank 2 (b in FIG. 1) has decreased to medium temperature water, that is, about 50 degrees (S11), and if it has not decreased to the temperature of medium temperature water (S7). If the temperature has decreased to the temperature of the medium temperature water, it is determined that it is necessary to switch from the heat storage heating operation to the direct heating heating operation in which heating is performed while heating the hot water by the heat pump unit 24, and the direct heating heating operation is started. To do. (S12)

（Ｓ７）で貯湯タンク２内の下部の温水温度が高温水でない場合及び、（Ｓ１１）で貯湯タンク２の中央部の温水の温度が中温水の温度まで低下した場合、（Ｓ１２）で直暖暖房運転を開始し、まず、貯湯タンク２の下部の温水温度が中温水かを判断し（Ｓ１３）、貯湯タンク２の下部の温水温度が中温水の場合は、貯湯タンク２内の下部の温水を貯湯タンク２の底部から加熱往き管４を通り、低温水側切替弁８により暖房往き管１０を通って暖房用熱交換器１８で放熱する。（Ｓ１４）
この時、暖房用熱交換器１８で加熱された熱媒の温度が所定の温度となるように暖房用循環ポンプ２２と加熱循環ポンプ２５の回転数が制御されるものである。 When the temperature of the hot water in the lower part of the hot water storage tank 2 is not high-temperature water in (S7) and the temperature of the hot water in the central part of the hot water storage tank 2 is lowered to the temperature of medium hot water in (S11), the warm water is directly warmed in (S12) The heating operation is started. First, it is determined whether the hot water temperature at the lower part of the hot water storage tank 2 is medium hot water (S13). If the hot water temperature at the lower part of the hot water storage tank 2 is medium hot water, the hot water at the lower part in the hot water storage tank 2 is determined. Is radiated from the bottom of the hot water storage tank 2 through the heating forward pipe 4 and through the heating forward pipe 10 by the low temperature water side switching valve 8 in the heating heat exchanger 18. (S14)
At this time, the rotation speeds of the heating circulation pump 22 and the heating circulation pump 25 are controlled so that the temperature of the heat medium heated by the heating heat exchanger 18 becomes a predetermined temperature.

そして暖房用熱交換器１８で放熱した温水は、暖房戻り管１９から加熱往き管４に戻って、ヒートポンプユニット２４により中温水の温度まで加熱して（Ｓ１５）、加熱戻り管６から戻り切替弁１４により中温水戻り管１５を通って貯湯タンク２中央部に戻るものである。（Ｓ１６）   Then, the hot water radiated by the heating heat exchanger 18 returns to the heating forward pipe 4 from the heating return pipe 19 and is heated to the temperature of the medium temperature water by the heat pump unit 24 (S15), and the return switching valve from the heating return pipe 6 is heated. 14 returns to the central portion of the hot water storage tank 2 through the intermediate warm water return pipe 15. (S16)

それにより暖房用熱交換器１８で放熱して温度の下がった温水を中温水の温度まで加熱して貯湯タンク２中央部に戻ることで、貯湯タンク２の中央部から下部までの温水が暖房運転を行うために必要な中温水にしておくことができ、また、中温水の状態から放熱して温度の下がった温水を中温水の温度まで加熱すればいいので、中温水を高温水にまで加熱する場合よりもヒートポンプユニット２０による沸上効率（ＣＯＰ）の低下を少なくすることができるものである。   As a result, the warm water from the central part of the hot water storage tank 2 to the lower part is heated by heating the hot water, which has been radiated by the heat exchanger 18 for heating, to the temperature of the medium hot water and returning to the central part of the hot water tank 2. It is possible to keep the warm water that is necessary for the operation, and it is only necessary to heat the warm water that has fallen from the state of the warm water to the temperature of the warm water so that the warm water is heated to hot water. The decrease in the boiling efficiency (COP) by the heat pump unit 20 can be reduced as compared with the case where it is performed.

また、（Ｓ１３）で貯湯タンク２の下部の温水温度が中温水でない場合、つまり貯湯タンク２の下部の温水温度が２０度以下の低温水の場合、次に貯湯タンク２中央部内の温水温度が高温水かを判断し（Ｓ１７）、高温水の場合は貯湯タンク２中央部内の温水を中温水出湯管１３から中温水側切替弁１２により暖房往き管１０を通って暖房用熱交換器１８で放熱する。（Ｓ１８）   If the hot water temperature in the lower part of the hot water storage tank 2 is not medium hot water in (S13), that is, if the hot water temperature in the lower part of the hot water storage tank 2 is 20 degrees C or less, then the hot water temperature in the central part of the hot water storage tank 2 is It is determined whether the water is hot water (S17). In the case of hot water, the hot water in the central portion of the hot water storage tank 2 is passed from the intermediate hot water outlet pipe 13 to the intermediate hot water side switching valve 12 through the heating forward pipe 10 in the heating heat exchanger 18. Dissipate heat. (S18)

そして暖房用熱交換器１８で加熱された熱媒の温度を入水温度センサ２６で検知して、その熱媒の温度が中温水以上の温度か判断し（Ｓ１９）、中温水以上の温度の場合は、ヒートポンプユニット２４により加熱されずにそのまま加熱戻り管６から戻り切替弁１４により中温水戻り管１５を通って貯湯タンク２中央部に戻して（Ｓ２０）、（Ｓ１２）に戻り、その熱媒の温度が中温水未満の温度の場合は、ヒートポンプユニット２４により中温水の温度まで加熱して加熱戻り管６から戻り切替弁１４により中温水戻り管１５を通って貯湯タンク２中央部に戻して（Ｓ２１）、（Ｓ１２）に戻るものである。   Then, the temperature of the heat medium heated by the heating heat exchanger 18 is detected by the incoming water temperature sensor 26, and it is determined whether the temperature of the heat medium is higher than the medium temperature water (S19). Is not heated by the heat pump unit 24 but is returned from the heating return pipe 6 to the central portion of the hot water storage tank 2 through the return switching valve 14 through the intermediate hot water return pipe 15 (S20), and returns to (S12). When the temperature of the water is lower than the medium temperature water, the heat pump unit 24 heats the medium temperature water to the temperature of the medium temperature water, and returns from the heating return pipe 6 to the center of the hot water storage tank 2 through the medium temperature water return pipe 15 by the return switching valve 14. Return to (S21) and (S12).

また、（Ｓ１７）で貯湯タンク２の中央部内の温水温度が高温水でない場合、次に貯湯タンク２中央部内の温水温度が中温水かを判断し（Ｓ２２）、中温水の場合は貯湯タンク２中央部内の温水を中温水出湯管１３から中温水側切替弁１２により暖房往き管１０を通って暖房用熱交換器１８で放熱して（Ｓ２３）、（Ｓ１５）に戻るものである。   If the hot water temperature in the central portion of the hot water storage tank 2 is not hot water in (S17), it is next determined whether the hot water temperature in the central portion of the hot water storage tank 2 is medium hot water (S22). The hot water in the center is radiated from the intermediate hot water outlet pipe 13 by the intermediate hot water side switching valve 12 through the heating forward pipe 10 to the heat exchanger 18 for heating (S23) and returns to (S15).

また、（Ｓ２２）で貯湯タンク２の中央部内の温水温度が中温水でない場合、
大量の給湯により貯湯タンク２の中央部から下部が２０度以下の低温水であると判断し、この低温水をそのまま暖房用熱交換器１８に流すと暖房運転に支障を来すと判断し、暖房用熱交換器１８に温水の供給を停止する。（Ｓ２４） Moreover, when the hot water temperature in the center part of the hot water storage tank 2 is not medium hot water in (S22),
It is judged that the lower part of the hot water storage tank 2 from the central part of the hot water storage tank 2 is low-temperature water of 20 degrees or less due to a large amount of hot water supply, and if this low-temperature water is directly passed to the heating heat exchanger 18, it is judged that the heating operation will be hindered. Supply of warm water to the heat exchanger 18 for heating is stopped. (S24)

そして貯湯タンク２下部の低温水を貯湯タンク２の底部から加熱往き管４を通り、低温水側切替弁８により往きバイパス管９を通ってヒートポンプユニット２４により高温水の温度まで加熱して（Ｓ２５）、加熱戻り管６から戻り切替弁１４により中温水戻り管１５を通って貯湯タンク２中央部に戻すものである。（Ｓ２６）   Then, the low temperature water in the lower part of the hot water storage tank 2 passes through the heating forward pipe 4 from the bottom of the hot water storage tank 2, passes through the forward bypass pipe 9 by the low temperature water side switching valve 8 and is heated to the temperature of the high temperature water by the heat pump unit 24 (S 25 ), Returning from the heating return pipe 6 to the central portion of the hot water storage tank 2 through the intermediate warm water return pipe 15 by the return switching valve 14. (S26)

これにより貯湯タンク２中央部の温水の温度が上昇していき、貯湯タンク２中央部の温水の温度が中温水の温度まで上昇するまで貯湯タンク２中央部にヒートポンプユニット２４により高温水の温度まで加熱した湯水を戻し、貯湯タンク２中央部の温水の温度が中温水の温度まで上昇したら（Ｓ２７）、直暖暖房運転を再開して（Ｓ２８）、（Ｓ２２）に戻るものである。   As a result, the temperature of the hot water in the central portion of the hot water storage tank 2 rises, and until the temperature of the hot water in the central portion of the hot water storage tank 2 rises to the temperature of the medium hot water, When the heated hot water is returned and the temperature of the hot water at the center of the hot water storage tank 2 rises to the temperature of the medium temperature water (S27), the direct heating heating operation is resumed (S28), and the process returns to (S22).

次に、暖房運転と沸き上げ運転を同時に行う場合は、図４に示すように、最初に貯湯温度センサ７ａ〜７ｅにより貯湯タンク２内の温水温度を検知し（Ｓ２９）、それにより貯湯タンク２内の中央部の温水温度が中温水かを判断し（Ｓ３０）、貯湯タンク２内の中央部の温水の温度が中温水の場合は、貯湯タンク２中央部内の温水を中温水出湯管１３から中温水側切替弁１２により暖房往き管１０を通って暖房用熱交換器１８で放熱する。（Ｓ３１）、   Next, when the heating operation and the boiling operation are performed simultaneously, as shown in FIG. 4, first, the hot water temperature in the hot water storage tank 2 is detected by the hot water storage temperature sensors 7a to 7e (S29), thereby the hot water storage tank 2 It is determined whether the temperature of the hot water in the central part is medium hot water (S30), and if the temperature of the hot water in the central part of the hot water storage tank 2 is medium hot water, the hot water in the central part of the hot water storage tank 2 is discharged from the intermediate hot water tap pipe 13. Heat is dissipated by the heat exchanger 18 for heating through the heating forward pipe 10 by the intermediate warm water side switching valve 12. (S31),

そして暖房用熱交換器１８で放熱した温水は、暖房戻り管１９から加熱往き管４に戻って、ヒートポンプユニット２４により高温水の温度まで加熱して（Ｓ３２）、加熱戻り管６から戻り切替弁１４により貯湯タンク２上部（図１でのｃ）に戻り（Ｓ３３）、そして（Ｓ３０）に戻るものである。
これにより中温水をそのままヒートポンプユニット２４により高温水の温度まで加熱するよりも、暖房用熱交換器１８で放熱して暖房に利用して温度を下げ、その温度の下がった温水をヒートポンプユニット２４により高温水の温度まで加熱することで、ヒートポンプユニット２０による沸上効率（ＣＯＰ）の低下を少なくすることができるものである。 The hot water radiated by the heating heat exchanger 18 returns to the heating forward pipe 4 from the heating return pipe 19 and is heated to the temperature of the high-temperature water by the heat pump unit 24 (S32). 14 returns to the upper part of the hot water storage tank 2 (c in FIG. 1) (S33), and then returns to (S30).
As a result, rather than heating the medium-temperature water as it is to the temperature of the high-temperature water by the heat pump unit 24, the heat is released by the heat exchanger 18 for heating and used for heating to lower the temperature. By heating to the temperature of the high-temperature water, the decrease in the boiling efficiency (COP) by the heat pump unit 20 can be reduced.

そしてこの運転を継続していくと、貯湯タンク２上部の高温水が多くなると共に貯湯タンク２中央部の中温水が少なくなっていき、そして貯湯タンク２中央部も高温水となると（Ｓ３４）、次に貯湯タンク２の下部が低温水であるか判断し（Ｓ３５）、貯湯タンク２の下部が低温水である場合は、貯湯タンク２中央部の高温水を中温水出湯管１３から中温水側切替弁１２に送ると共に、貯湯タンク２内の下部の低温水を貯湯タンク２の底部から加熱往き管４を通り、低温水側切替弁８により中温水側切替弁１２に送ることで、中温水側切替弁１２で貯湯タンク２中央部の高温水と貯湯タンク２下部の低温水を混合して中温水を生成し（Ｓ３６）、その生成した中温水を暖房用熱交換器１８に供給して（Ｓ３７）、（Ｓ３２）に戻るものである。   If this operation is continued, the hot water in the upper part of the hot water tank 2 increases, the medium temperature water in the central part of the hot water tank 2 decreases, and the central part of the hot water tank 2 becomes hot water (S34). Next, it is determined whether or not the lower part of the hot water storage tank 2 is low temperature water (S35). If the lower part of the hot water storage tank 2 is low temperature water, the hot water in the central part of the hot water storage tank 2 is supplied from the intermediate hot water outlet pipe 13 to the intermediate hot water side. By sending the low temperature water in the lower part of the hot water storage tank 2 from the bottom of the hot water storage tank 2 through the heating forward pipe 4 and sending it to the intermediate hot water side change valve 12 by the low temperature water side change valve 8, The side switching valve 12 mixes the hot water at the center of the hot water tank 2 and the low temperature water at the lower part of the hot water tank 2 to generate intermediate temperature water (S36), and supplies the generated intermediate temperature water to the heat exchanger 18 for heating. Return to (S37) and (S32).

これにより、暖房ユニット１６に中温水を供給しながら沸き上げ運転を行うことができるものである。   Thus, the boiling operation can be performed while supplying the warm water to the heating unit 16.

そしてこの運転を継続していくと、貯湯タンク２上部から中央部にかけての高温水が更に多くなると共に貯湯タンク２下部の低温水が少なくなっていき、そして貯湯タンク２下部の低温水の温度も高温水の影響で温度が上昇していき、それにより貯湯タンク２の下部が中温水になった場合は（Ｓ３８）、貯湯タンク２内の下部の中温水を貯湯タンク２の底部から加熱往き管４を通り、低温水側切替弁８により暖房往き管１０を通って暖房用熱交換器１８に供給して（Ｓ３９）、（Ｓ３２）に戻り、更に貯湯タンク２下部の温水の温度が高温水の温度まで上昇したら（Ｓ３８）、沸き上げ運転を終了し（Ｓ４０）、暖房運転を直暖暖房運転から蓄熱暖房運転に切り換えるものである。（Ｓ４１）   If this operation is continued, the amount of hot water from the upper part of the hot water tank 2 to the central part further increases and the temperature of the low temperature water at the lower part of the hot water tank 2 decreases. When the temperature rises due to the influence of the high temperature water and the lower part of the hot water storage tank 2 becomes medium temperature water (S38), the intermediate temperature water in the lower part of the hot water storage tank 2 is heated from the bottom of the hot water storage tank 2 to the heating pipe. 4, the low temperature water side switching valve 8 supplies the heating heat exchanger 18 through the heating forward pipe 10 (S <b> 39), returns to (S <b> 32), and the temperature of the hot water below the hot water storage tank 2 is high temperature water. When the temperature is raised to (S38), the boiling operation is terminated (S40), and the heating operation is switched from the direct heating heating operation to the regenerative heating operation. (S41)

またこの暖房運転と沸き上げ運転を同時に行っている状態で、大量の給湯により、貯湯タンク２の中央部から下部が２０度以下の低温水であると判断した時（Ｓ３４）この低温水をそのまま暖房用熱交換器１８に流すと暖房運転に支障を来すと判断し、暖房用熱交換器１８に温水の供給を停止し（Ｓ４２）、そして貯湯タンク２下部の低温水を貯湯タンク２の底部から加熱往き管４を通り、低温水側切替弁８により往きバイパス管９を通ってヒートポンプユニット２４により高温水の温度まで加熱して（Ｓ４３）、加熱戻り管６から戻り切替弁１４により中温水戻り管１５を通って貯湯タンク２中央部に戻し（Ｓ４４）、貯湯タンク２中央部の温水が中温水の温度まで上昇したら（Ｓ４５）、暖房運転を再開して（Ｓ４６）、（Ｓ３０）に戻るものである。   When it is determined that the lower part of the hot water storage tank 2 is 20 degrees or less from the center of the hot water storage tank 2 due to a large amount of hot water supply while the heating operation and the boiling operation are performed simultaneously (S34) It is judged that the heating operation will be hindered if it is passed through the heating heat exchanger 18, the supply of hot water to the heating heat exchanger 18 is stopped (S 42), and the low temperature water in the lower part of the hot water storage tank 2 is supplied to the hot water storage tank 2. From the bottom, it passes through the heating forward pipe 4, passes through the forward bypass pipe 9 by the low temperature water side switching valve 8, is heated to the temperature of the high temperature water by the heat pump unit 24 (S43), and is heated by the return switching valve 14 from the heating return pipe 6. The hot water return pipe 15 is returned to the central portion of the hot water tank 2 (S44), and when the hot water in the central portion of the hot water tank 2 rises to the temperature of the medium hot water (S45), the heating operation is resumed (S46), (S30). Back to It is intended.

このように貯湯タンク２内に中温水がある場合は、その中温水により暖房運転を行い、２４時間暖房運転を継続するような場合は、暖房運転により放熱して温度の下がった中温水を放熱する前の温度までヒートポンプユニット２４により加熱して貯湯タンク２内に戻す直暖暖房運転を行うので、ヒートポンプユニット２０による沸上効率（ＣＯＰ）の低下を少なくしつつ、高温水はそのままにして直暖暖房運転を行うことができるものである。   In this way, when there is medium temperature water in the hot water storage tank 2, heating operation is performed with the medium temperature water, and when heating operation is continued for 24 hours, the medium temperature water that is radiated by the heating operation and cooled down is radiated. Since the direct heating and heating operation is performed by heating the heat pump unit 24 to the temperature before the heating and returning it to the hot water storage tank 2, the reduction in boiling efficiency (COP) by the heat pump unit 20 is reduced and the high temperature water is left as it is. Heating / heating operation can be performed.

また、２４時間暖房運転を継続している状態で沸き上げ運転を同時に行う場合は、まずは貯湯タンク２内の中温水により暖房運転を行い、その暖房運転により放熱して温度の下がった中温水を高温水にまでヒートポンプユニット２４により加熱して貯湯タンク２の上部に戻すので、暖房運転を継続しつつ中温水をその暖房運転で放熱して温度の下げてから高温水にまで加熱することにより、中温水をそのまま高温水にまで加熱するよりヒートポンプユニット２０による沸上効率（ＣＯＰ）の低下を少なくしつつ、沸き上げ運転を行うことができるものである。   In the case where the boiling operation is performed at the same time while the heating operation is continued for 24 hours, the heating operation is first performed with the medium-temperature water in the hot water storage tank 2, and the medium-temperature water that is radiated by the heating operation and the temperature is lowered. Since it is heated to the high temperature water by the heat pump unit 24 and returned to the upper part of the hot water storage tank 2, while continuing the heating operation, the medium temperature water is dissipated by the heating operation and the temperature is lowered and then heated to the high temperature water. The boiling operation can be performed while reducing the decrease in the boiling efficiency (COP) by the heat pump unit 20 rather than heating the medium temperature water to the high temperature water as it is.

２ 貯湯タンク
３ 給水管
４ 加熱往き管
５ 出湯管
６ 加熱戻り管
７ａ〜７ｅ 貯湯温度センサ
８ 低温水側切替弁
９ 往きバイパス管
１０ 暖房往き管
１２ 中温水側切替弁
１３ 中温水出湯管
１４ 戻り切替弁
１５ 中温水戻り管
１６ 暖房ユニット
１７ 床暖装置
１８ 暖房用熱交換器
２４ ヒートポンプユニット DESCRIPTION OF SYMBOLS 2 Hot water storage tank 3 Water supply pipe 4 Heating outgoing pipe 5 Hot water outlet pipe 6 Heating return pipe 7a-7e Hot water storage temperature sensor 8 Low temperature water side switching valve 9 Outward bypass pipe 10 Heating outgoing pipe 12 Middle hot water side switching valve 13 Middle hot water outlet pipe 14 Return Changeover valve 15 Medium temperature water return pipe 16 Heating unit 17 Floor warming device 18 Heat exchanger 24 for heating Heat pump unit

Claims (3)

湯水を加熱する加熱手段と、該加熱手段により加熱された湯水を貯湯する貯湯タンクと、該貯湯タンクの側面上下に複数設けられ貯湯タンク内の貯湯温度を検出する貯湯温度センサと、一端が貯湯タンク上部に接続され貯湯タンクから外部の蛇口へ出湯する出湯管と、一端が貯湯タンク底部に接続され貯湯タンクへ給水する給水管と、一端が貯湯タンク底部に接続され他端が加熱手段の入水側に接続された加熱往き管と、一端が加熱手段の出水側に接続され他端が貯湯タンク上部に接続された加熱戻り管とを備えると共に、暖房用熱交換器にて熱交換して加熱された熱媒を床暖装置に循環させることで暖房を行う暖房ユニットの暖房用熱交換器に貯湯タンク内の温水を流通させる貯湯式給湯暖房装置において、前記加熱戻り管に設けられた戻り切替弁に一端が接続され他端が貯湯タンク中央部に接続された中温水戻り管と、前記加熱往き管に設けられた低温水側切替弁に一端が接続され他端が加熱手段の上流側の加熱往き管に接続された往きバイパス管と、一端が低温水切替弁に接続され他端が暖房用熱交換器の一次側の入水側に接続された暖房往き管と、該暖房往き管に設けられた中温水側切替弁に一端が接続され他端が貯湯タンク中央部に接続された中温水出湯管とを備え、単独暖房運転で貯湯タンク中央部の温水が中温水の時、貯湯タンク中央部の中温水を中温水出湯管から中温水側切替弁を介して暖房用熱交換器に供給し、暖房用熱交換器で放熱して温度が下がった温水を加熱手段により放熱前の中温水の温度まで加熱して、加熱戻り管から戻り切替弁を介して中温水戻り管より貯湯タンク中央部に戻し、暖房沸き上げ同時運転で貯湯タンク中央部の温水が中温水の時、貯湯タンク中央部の中温水を中温水出湯管から中温水側切替弁を介して暖房用熱交換器に供給し、暖房用熱交換器で放熱して温度が下がった温水を加熱手段により沸き上げ温度の高温水の温度まで加熱して、加熱戻り管から戻り切替弁を介して貯湯タンク上部に戻すことを特徴とする貯湯式給湯暖房装置。   A heating means for heating the hot water, a hot water storage tank for storing the hot water heated by the heating means, a hot water storage temperature sensor for detecting the hot water temperature in the hot water storage tank, a plurality of which are provided on the upper and lower sides of the hot water storage tank, A hot water discharge pipe connected to the upper part of the tank and discharged from the hot water storage tank to an external faucet, a water supply pipe connected to the bottom of the hot water storage tank and supplied to the hot water storage tank, one end connected to the bottom of the hot water storage tank and the other end supplied to the heating means And a heating return pipe having one end connected to the water discharge side of the heating means and the other end connected to the upper part of the hot water storage tank, and heat-exchanged by a heat exchanger for heating. In the hot water storage type hot water supply and heating device in which the hot water in the hot water storage tank is circulated to the heating heat exchanger of the heating unit that performs heating by circulating the heated heat medium to the floor heating device, the return provided in the heating return pipe One end is connected to the low temperature water switching valve provided in the heating outlet pipe, and the other end is upstream of the heating means. An outgoing bypass pipe connected to the heating outgoing pipe, a heating outgoing pipe having one end connected to the low-temperature water switching valve and the other end connected to the primary water inlet side of the heating heat exchanger, and the heating outgoing pipe The hot water storage tank is equipped with an intermediate hot water outlet pipe having one end connected to the provided hot water side switching valve and the other end connected to the hot water tank central part. The middle temperature water is supplied from the middle temperature hot water outlet pipe to the heating heat exchanger via the medium temperature water side switching valve, and the heated water is radiated by the heating heat exchanger and the temperature is lowered before being radiated by the heating means. Heat to warm water temperature and return to warm water from heating return pipe via return switching valve Return to the center of the hot water storage tank, and when the heating water is heated at the same time and the hot water in the central part of the hot water tank is medium temperature, the hot water in the central part of the hot water tank is heated from the intermediate hot water outlet pipe through the intermediate hot water side switching valve. The hot water that is supplied to the exchanger, radiated by the heat exchanger for heating, and cooled down is heated by the heating means to the temperature of the high-temperature water at the boiling temperature, and the upper part of the hot water tank through the return switching valve from the heating return pipe A hot water storage type hot water supply and heating device characterized by being returned to 単独暖房運転で貯湯タンク下部の温水が中温水の時、貯湯タンク下部の中温水を加熱往き管から低温水側切替弁及び中温水側切替弁を介して暖房用熱交換器に供給し、暖房用熱交換器で放熱して温度が下がった温水を加熱手段により放熱前の中温水の温度まで加熱して、加熱戻り管から戻り切替弁を介して中温水戻り管より貯湯タンク中央部に戻し、暖房沸き上げ同時運転で貯湯タンク下部の温水が中温水の時、貯湯タンク下部の中温水を加熱往き管から低温水側切替弁及び中温水側切替弁を介して暖房用熱交換器に供給し、暖房用熱交換器で放熱して温度が下がった温水を加熱手段により沸き上げ温度の高温水の温度まで加熱して、加熱戻り管から戻り切替弁を介して貯湯タンク上部に戻すことを特徴とする請求項１記載の貯湯式給湯暖房装置。   When the hot water at the bottom of the hot water storage tank is medium temperature water in the single heating operation, the medium temperature water at the bottom of the hot water storage tank is supplied from the heating forward pipe to the heat exchanger for heating via the low temperature water side switching valve and the medium temperature water side switching valve. The hot water, which has been radiated by the heat exchanger for heating, is heated to the temperature of the medium temperature water before heat dissipation by the heating means, and is returned from the heating return pipe to the center of the hot water storage tank via the return switching valve. When the hot water at the bottom of the hot water tank is medium-temperature water during heating and boiling operation at the same time, the medium-temperature water at the bottom of the hot water tank is supplied to the heating heat exchanger from the heating forward pipe via the low-temperature water side switching valve and the medium-temperature water side switching valve. Heating the hot water, which has been radiated by the heat exchanger for heating, to a high temperature water of the boiling temperature by heating means, and returning it from the heating return pipe to the upper part of the hot water tank via the return switching valve. The hot water storage type hot water supply / heating system according to claim 1, Location. 単独暖房運転及び暖房沸き上げ同時運転で貯湯タンク中央部及び下部の温水が低温水の時、中温水側切替弁により暖房往き管を閉塞して暖房運転を停止すると共に、貯湯タンク下部の低温水を加熱往き管から低温水側切替弁を介して往きバイパス管により加熱手段に入水して加熱手段により沸き上げ温度の高温水の温度まで加熱し、その高温水を加熱戻り管から戻り切替弁を介して中温水戻り管より貯湯タンク中央部に戻し、貯湯タンク中央部の温水が中温水にまで温度上昇したら中温水側切替弁により暖房往き管を開放して暖房運転を再開することを特徴とする請求項２記載の貯湯式給湯暖房装置。   When the hot water at the center and lower part of the hot water tank is low-temperature water in the single heating operation and the heating and heating simultaneous operation, the heating operation is stopped by closing the heating forward pipe with the intermediate hot water side switching valve, and the low-temperature water at the lower part of the hot water tank The heating means enters the heating means through the low temperature water side switching valve and the heating bypass pipe and heats it up to the boiling water temperature with the heating means, and the high temperature water is returned from the heating return pipe to the return switching valve. The hot water is returned from the intermediate hot water return pipe to the hot water tank central part, and when the hot water in the hot water tank central part rises to the intermediate hot water, the heating hot water pipe is opened by the intermediate hot water side switching valve and the heating operation is resumed. The hot water storage type hot water supply and heating device according to claim 2.
JP2009171792A 2009-07-23 2009-07-23 Hot water storage hot water heater Expired - Fee Related JP5210259B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101343445B1 (en) 2012-09-26 2013-12-19 린나이가부시기가이샤 Hybrid hot-water supply apparatus
KR101343438B1 (en) 2012-09-25 2013-12-19 린나이가부시기가이샤 Hybrid hot-water supply apparatus
WO2016001980A1 (en) * 2014-06-30 2016-01-07 三菱電機株式会社 Heating and hot water supply system
JP2020026910A (en) * 2018-08-10 2020-02-20 三菱電機株式会社 Water heater
JP7037094B1 (en) 2020-09-30 2022-03-16 ダイキン工業株式会社 Water heater

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006046801A (en) * 2004-08-04 2006-02-16 Corona Corp Hot water storage type heating apparatus
JP2006153410A (en) * 2004-12-01 2006-06-15 Corona Corp Storage type hot water supply heating device
JP2006207839A (en) * 2005-01-25 2006-08-10 Toshiba Electric Appliance Co Ltd Hot water supply device
JP2008020100A (en) * 2006-07-11 2008-01-31 Denso Corp Hot water storage type hot water supply heating device
JP2008232462A (en) * 2007-03-16 2008-10-02 Corona Corp Heat pump hot water storage type hot water supplying/heating device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006046801A (en) * 2004-08-04 2006-02-16 Corona Corp Hot water storage type heating apparatus
JP2006153410A (en) * 2004-12-01 2006-06-15 Corona Corp Storage type hot water supply heating device
JP2006207839A (en) * 2005-01-25 2006-08-10 Toshiba Electric Appliance Co Ltd Hot water supply device
JP2008020100A (en) * 2006-07-11 2008-01-31 Denso Corp Hot water storage type hot water supply heating device
JP2008232462A (en) * 2007-03-16 2008-10-02 Corona Corp Heat pump hot water storage type hot water supplying/heating device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101343438B1 (en) 2012-09-25 2013-12-19 린나이가부시기가이샤 Hybrid hot-water supply apparatus
KR101343445B1 (en) 2012-09-26 2013-12-19 린나이가부시기가이샤 Hybrid hot-water supply apparatus
WO2016001980A1 (en) * 2014-06-30 2016-01-07 三菱電機株式会社 Heating and hot water supply system
US20170023263A1 (en) * 2014-06-30 2017-01-26 Mitsubishi Electric Corporation Heating and hot water supply system
JPWO2016001980A1 (en) * 2014-06-30 2017-04-27 三菱電機株式会社 Hot water system
AU2014399713B2 (en) * 2014-06-30 2017-12-21 Mitsubishi Electric Corporation Heating and hot water supply system
US10697648B2 (en) 2014-06-30 2020-06-30 Mitsubishi Electric Corporation Heating and hot water supply system
JP2020026910A (en) * 2018-08-10 2020-02-20 三菱電機株式会社 Water heater
JP7149763B2 (en) 2018-08-10 2022-10-07 三菱電機株式会社 water heater
JP7037094B1 (en) 2020-09-30 2022-03-16 ダイキン工業株式会社 Water heater
WO2022071207A1 (en) * 2020-09-30 2022-04-07 ダイキン工業株式会社 Hot water supply device
JP2022057004A (en) * 2020-09-30 2022-04-11 ダイキン工業株式会社 Water heater

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