JP2000130863A - Storage type water heater - Google Patents

Storage type water heater

Info

Publication number
JP2000130863A
JP2000130863A JP10310541A JP31054198A JP2000130863A JP 2000130863 A JP2000130863 A JP 2000130863A JP 10310541 A JP10310541 A JP 10310541A JP 31054198 A JP31054198 A JP 31054198A JP 2000130863 A JP2000130863 A JP 2000130863A
Authority
JP
Japan
Prior art keywords
hot water
temperature
solar heat
heat collecting
outside air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10310541A
Other languages
Japanese (ja)
Inventor
Hatsuo Yajima
初男 矢島
Yasuyuki Masuo
泰之 増尾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Electric Appliances Co Ltd
Original Assignee
Toshiba Electric Appliances Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Electric Appliances Co Ltd filed Critical Toshiba Electric Appliances Co Ltd
Priority to JP10310541A priority Critical patent/JP2000130863A/en
Publication of JP2000130863A publication Critical patent/JP2000130863A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Landscapes

  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

PROBLEM TO BE SOLVED: To raise the temperature and to boil the hot water in a hot water storage tank efficiently at low running cost by prolonging the solar heat pump solar heat collecting operation switching time band if both the outer air temperature and the hot water temperature are higher than specified levels, respectively, at a scheduled end point of the heat collecting operation switching time band. SOLUTION: A controller 51 has the function of an operation control means for prolonging the solar heat pump solar heat collecting operation switching time band if both the outer air temperature detected by an outer air temperature sensor 43 and the hot water temperature are higher than specified levels, respectively, at a scheduled end point of the heat collecting operation switching time band for making a switch between solar heat collecting operation and heat pump solar heat collecting operation. The controller 51 also has the function of raising the temperature and boiling the hot water in a hot water storage tank 11 through heat pump solar heat collecting operation at the end of prolonged time band. Since high energy can be obtained from solar heat with high heat collecting efficiency, hot water in the hot water storage tank can be heated up and boiled efficiently at low running cost.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、ヒートポンプ集熱
運転およびソーラ集熱運転を選択的に併用して貯湯槽の
湯水を効率的に昇温沸上する貯湯式給湯装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot-water storage type hot water supply apparatus for efficiently raising and boiling water in a hot-water storage tank by selectively using a heat pump heat collecting operation and a solar heat collecting operation.

【０００２】[0002]

【従来の技術】従来、例えば、特公平４−１９４５８号
公報に記載されているように、ヒートポンプ集熱運転お
よびソーラ（太陽熱）集熱運転を選択的に併用して貯湯
槽の湯水の昇温沸上を行なうようにした貯湯式給湯装置
の構造が知られている。2. Description of the Related Art Conventionally, as described in Japanese Patent Publication No. 4-19458, for example, the heat pump heat collecting operation and solar (solar heat) heat collecting operation are selectively used in combination to raise the temperature of hot water in a hot water storage tank. 2. Description of the Related Art The structure of a hot water storage type hot water supply device that performs boiling is known.

【０００３】この貯湯式給湯装置の構造では、圧縮機、
凝縮器および蒸発器を有して冷媒が循環されるヒートポ
ンプ集熱器を備えるとともに、蒸発器に並列に接続され
るソーラ集熱器を備え、凝縮器において貯湯槽の湯水と
熱交換するように構成しており、圧縮機および凝縮器に
対して蒸発器およびソーラ集熱器のいずれか一方を選択
的に切換接続することにより、ヒートポンプ集熱運転お
よびソーラ集熱運転のいずれか一方の集熱作用で貯湯槽
の湯水を昇温沸上するようにしている。In the structure of this hot water supply type hot water supply apparatus, a compressor,
A heat pump collector having a condenser and an evaporator, and a refrigerant is circulated, and a solar collector connected in parallel to the evaporator is provided, and the condenser exchanges heat with hot water in a hot water storage tank. By selectively switching one of the evaporator and the solar collector to the compressor and the condenser, one of the heat pump collecting operation and the solar collecting operation can be performed. The function is to raise the temperature of the hot water in the hot water tank by boiling.

【０００４】そして、例えば晴天の日で、ソーラ集熱器
に設けられた集熱温度検知センサで検知される集熱温度
が設定温度より高い場合に、ソーラ集熱運転を実行し、
太陽熱を利用して貯湯槽の湯水を昇温沸上する。また、
例えば曇りや雨の日で、集熱温度が設定温度より低い場
合に、ヒートポンプ集熱運転を実行し、大気熱を利用し
て貯湯槽の湯水の昇温沸上する。On a sunny day, for example, when a heat collection temperature detected by a heat collection temperature detection sensor provided in the solar heat collector is higher than a set temperature, a solar heat collection operation is performed,
The water in the hot water tank is heated and boiled using solar heat. Also,
For example, on a cloudy day or a rainy day, when the heat collection temperature is lower than the set temperature, the heat pump heat collection operation is performed, and the temperature of the hot water in the hot water storage tank is raised using atmospheric heat.

【０００５】また、貯湯式給湯装置は、例えば図５に示
すように、運転モードとして、標準運転モード、ソーラ
集熱運転モード、ヒートポンプ集熱運転モードを備えて
いる。Further, the hot water supply type hot water supply apparatus has, as shown in FIG. 5, for example, a standard operation mode, a solar heat collection operation mode, and a heat pump heat collection operation mode as operation modes.

【０００６】標準運転モードでは、７時から８時までの
時間帯において、貯湯槽に給水される給水温度が設定温
度より低い場合はヒートポンプ集熱運転し、高い場合は
運転せず、８時から１２時までの時間帯において、ソー
ラ集熱器の集熱温度が設定温度より高い場合はソーラ集
熱運転し、低い場合はヒートポンプ集熱運転し、１２時
からは貯湯槽の湯水が設定温度に昇温沸上されるまでヒ
ートポンプ集熱運転する。In the standard operation mode, in the time period from 7:00 to 8:00, when the temperature of the water supplied to the hot water storage tank is lower than the set temperature, the heat pump heat collecting operation is performed. In the time period until 12:00, when the heat collecting temperature of the solar collector is higher than the set temperature, the solar heat collecting operation is performed, and when it is low, the heat pump heat collecting operation is performed. A heat pump heat collection operation is performed until the temperature is raised.

【０００７】ソーラ集熱運転では、沸増し設定なしの場
合、７時から１７時までの時間帯において、ソーラ集熱
器の集熱温度が設定温度より高い場合はソーラ集熱運転
し、低い場合は運転を停止し、これを繰り返しながら貯
湯槽の湯水が設定温度に昇温沸上されるか１７時になる
と運転を停止する。[0007] In the solar heat collecting operation, when the heat collection temperature of the solar heat collector is higher than the set temperature in the time period from 7:00 to 17:00 without the setting of additional boiling, the solar heat collecting operation is performed; Stops the operation and repeats this operation to stop the operation when the temperature of the hot water in the hot water storage tank is raised to the set temperature or at 17:00.

【０００８】ヒートポンプ集熱運転では、７時から貯湯
槽の湯水が設定温度に昇温沸上されるまでヒートポンプ
集熱運転する。In the heat pump heat collecting operation, the heat pump heat collecting operation is performed from 7:00 until the temperature of the hot water in the hot water storage tank is raised to the set temperature.

【０００９】また、図６に示すように、ソーラ集熱運転
においては、沸増し設定なしと、沸増し設定ありとを選
択可能とするものもある。沸増し設定なしの場合、７時
から１７時までの時間帯において、ソーラ集熱器の集熱
温度が設定温度より高い場合はソーラ集熱運転し、低い
場合は運転を停止し、これを繰り返しながら貯湯槽の湯
水が設定温度に昇温沸上されるか１７時になると運転を
停止する。また、沸増し設定ありの場合、１７時までに
貯湯槽の湯水が設定温度に昇温沸上されなかったとき、
１７時からヒートポンプ集熱運転を開始して設定温度に
昇温沸上する。なお、標準運転およびヒートポンプ集熱
運転は図５の場合と同様である。Further, as shown in FIG. 6, in the solar heat collecting operation, there is a solar heat collecting operation that can select between a setting of no boiling and a setting of boiling. In the time zone from 7:00 to 17:00, if the heat collection temperature of the solar heat collector is higher than the set temperature, the solar heat collection operation is performed. If the heat collection temperature is low, the operation is stopped, and the operation is repeated. The operation is stopped when the temperature of the hot water in the hot water storage tank is raised to the set temperature or at 17:00. In addition, in the case of the setting to increase the boiling water, when the temperature of the hot water in the hot water tank is not raised to the set temperature by 17:00,
The heat pump heat collecting operation is started at 17:00, and the temperature is raised to the set temperature. The standard operation and the heat pump heat collection operation are the same as those in FIG.

【００１０】[0010]

【発明が解決しようとする課題】ところで、図５に示し
たように、標準運転モードでのソーラ集熱運転とヒート
ポンプ集熱運転とを天候に応じて切り換えるソーラ・ヒ
ートポンプ集熱運転切換時間帯は、年間を通じて常に８
時から１２時に固定設定されている。この８時から１２
時のソーラ・ヒートポンプ集熱運転切換時間帯の設定
は、太陽エネルギが減少する冬期において、外気温度が
上がらず、ソーラ集熱運転およびヒートポンプ集熱運転
での集熱効率が低下するため、ソーラ・ヒートポンプ集
熱運転切換時間帯を長く設定すると、その時間帯の終了
後にヒートポンプ集熱運転を開始しても、湯水を最も多
く使用する夕刻までに設定温度に昇温沸上することがで
きないおそれがあるので、この冬期を基準として８時か
ら１２時のソーラ・ヒートポンプ集熱運転切換時間帯が
固定設定されている。By the way, as shown in FIG. 5, the solar heat pump heat collecting operation switching time for switching between the solar heat collecting operation in the standard operation mode and the heat pump heat collecting operation according to the weather is as follows. , Always 8 throughout the year
The time is fixed at 12:00. It is 12 from this 8:00
The setting of the solar heat pump heat collecting operation switching time zone is set in the winter, when solar energy decreases, because the outside air temperature does not rise and the heat collecting efficiency in the solar heat collecting operation and the heat pump heat collecting operation decreases, so the solar heat pump If the heat collecting operation switching time zone is set to be long, even if the heat pump heat collecting operation is started after the end of the time zone, there is a possibility that the temperature cannot be raised to the set temperature by the evening when hot water is used most. Therefore, the solar heat pump heat collecting operation switching time zone is fixedly set from 8:00 to 12:00 on the basis of this winter season.

【００１１】しかしながら、外気温度は冬、春秋、夏の
順で高くなり、この外気温度の上昇によりソーラ集熱運
転での集熱効率が向上し、貯湯槽の湯水を効率的に昇温
沸上できるようになるが、従来は、ソーラ・ヒートポン
プ集熱運転切換時間帯を８時から１２時に固定設定して
いるため、例えば夏期において、外気温度が高く、ソー
ラ・ヒートポンプ集熱運転での集熱効率がよい状態にあ
っても、１２時になれば、ソーラ集熱運転を停止し、ヒ
ートポンプ集熱運転に切り換えてしまうため、低ランニ
ングコストで効率よく貯湯槽の湯水を昇温沸上できない
問題がある。However, the outside air temperature increases in the order of winter, spring and autumn, and summer, and the increase in the outside air temperature improves the heat collection efficiency in the solar heat collection operation, so that the water in the hot water storage tank can be efficiently heated and boiled. However, conventionally, since the solar heat pump heat collecting operation switching time zone is fixedly set from 8:00 to 12:00, for example, in summer, the outside air temperature is high, and the heat collecting efficiency in the solar heat pump heat collecting operation is low. Even in a good state, at 12:00, the solar heat collecting operation is stopped and the operation is switched to the heat pump heat collecting operation. Therefore, there is a problem that the running water in the hot water tank cannot be efficiently heated and boiled at a low running cost.

【００１２】また、図６に示したように、ソーラ集熱運
転モードで沸増し選択した場合では、ソーラ集熱運転の
運転と停止とを天候に応じて切り換えるソーラ集熱運転
・停止切換時間帯を固定設定しているため、標準運転モ
ードの場合と同様の問題がある。すなわち、夕刻までに
貯湯槽の湯水を設定温度に沸上昇温させるためには、ソ
ーラ集熱運転・停止切換時間帯を早い時刻で終了させて
ヒートポンプ集熱運転に切り換える必要があるが、例え
ば冬期において、外気温度が低く、ソーラ集熱運転での
集熱効率が悪い状態にあっても、ソーラ集熱運転・停止
切換時間帯の終了時点まで継続し、その後、ヒートポン
プ集熱運転に切り換えてしまうため、夕刻までに貯湯槽
の湯水を昇温沸上できない問題がある。Further, as shown in FIG. 6, in the case where the boiling mode is selected in the solar heat collecting operation mode, the solar heat collecting operation / stop switching time period in which the operation and the stop of the solar heat collecting operation are switched according to the weather. Is fixed, there is a problem similar to that in the standard operation mode. That is, in order to raise the temperature of the hot water in the hot water storage tank to the set temperature by evening, it is necessary to end the solar heat collection operation / stop switching time zone at an early time and switch to the heat pump heat collection operation. Even if the outside air temperature is low and the heat collection efficiency in the solar heat collecting operation is poor, the solar heat collecting operation continues until the end of the switching time zone and then switches to the heat pump heat collecting operation. However, there is a problem that the water in the hot water tank cannot be heated and boiled by evening.

【００１３】また、逆に、外気温度が高く、ソーラ集熱
運転およびヒートポンプ集熱運転での集熱効率がよい状
態にあっても、日中に雨や曇りの時間が多い天候の場合
には、ソーラ集熱運転を利用していたのでは、夕刻まで
に貯湯槽の湯水を設定温度に沸上昇温させることができ
ないおそれがある。On the other hand, even when the outside air temperature is high and the heat collection efficiency in the solar heat collecting operation and the heat pump heat collecting operation is good, when the weather is rainy or cloudy during the daytime, If the solar heat collecting operation is used, there is a possibility that the hot water in the hot water tank cannot be heated to the set temperature by evening.

【００１４】このように、外気温度や貯湯槽の湯水の温
度に無関係に、ソーラ・ヒートポンプ集熱運転切換時間
帯やソーラ集熱運転・停止切換時間帯が固定設定されて
いたため、低ランニングコストで効率よく貯湯槽の湯水
を昇温沸上できない問題や、所定時刻までに貯湯槽の湯
水を設定温度に沸上昇温させることができない問題があ
る。As described above, the solar heat pump heat collecting operation switching time zone and the solar heat collecting operation / stop switching time period are fixedly set regardless of the outside air temperature and the temperature of hot water in the hot water storage tank. There is a problem that the hot water in the hot water tank cannot be efficiently heated and boiled, and a problem that the hot water in the hot water tank cannot be heated to the set temperature by a predetermined time.

【００１５】本発明は、このような点に鑑みなされたも
ので、外気温度や貯湯槽の湯水の温度に対応して、ソー
ラ・ヒートポンプ集熱運転切換時間帯またはソーラ集熱
運転・停止切換時間帯を延長することにより、低ランニ
ングコストで効率よく貯湯槽の湯水を昇温沸上できる貯
湯式給湯装置を提供することを目的とする。The present invention has been made in view of such a point, and the solar heat pump heat collection operation switching time zone or the solar heat collection operation / stop switching time corresponding to the outside air temperature and the temperature of hot water in the hot water storage tank. It is an object of the present invention to provide a hot water supply type hot water supply apparatus capable of efficiently raising and boiling water in a hot water storage tank at a low running cost by extending a belt.

【００１６】[0016]

【課題を解決するための手段】請求項１記載の貯湯式給
湯装置は、圧縮機、凝縮器および蒸発器を有し、冷媒が
循環されるヒートポンプ集熱器と、前記蒸発器と並列に
接続されるソーラ集熱器と、前記圧縮機および凝縮器に
対して蒸発器およびソーラ集熱器のいずれか一方を選択
的に切換接続する切換手段と、前記凝縮器との熱交換に
よって湯水が昇温沸上される貯湯槽と、外気温度を検知
する外気温度検知手段と、前記貯湯槽の湯水の温度を検
知する湯水温度検知手段と、前記ソーラ集熱運転とヒー
トポンプ集熱運転とを切り換えるソーラ・ヒートポンプ
集熱運転切換時間帯の予定の終了時点で、前記外気温度
検知手段で検知される外気温度と前記湯水温度検知手段
で検知される湯水温度との両方がそれぞれ所定値以上の
とき、ソーラ・ヒートポンプ集熱運転切換時間帯を延長
させる運転制御手段とを具備しているものである。According to a first aspect of the present invention, there is provided a hot-water storage type hot water supply apparatus comprising a compressor, a condenser, and an evaporator, and a heat pump collector in which a refrigerant is circulated and connected in parallel with the evaporator. A solar heat collector, switching means for selectively switching one of an evaporator and a solar heat collector to the compressor and the condenser, and hot water rising by heat exchange with the condenser. A hot water storage tank to be heated, an outside air temperature detecting means for detecting an outside air temperature, a hot water temperature detecting means for detecting a temperature of hot water in the hot water storage tank, and a solar for switching between the solar heat collecting operation and the heat pump heat collecting operation When both the outside air temperature detected by the outside air temperature detecting means and the hot water temperature detected by the hot water temperature detecting means are respectively equal to or higher than predetermined values at the scheduled end of the heat pump heat collection operation switching time zone,・ Hi The band between Toponpu heat collecting operation switching those that and a driving control means for extending.

【００１７】そして、ソーラ集熱運転とヒートポンプ集
熱運転とを切り換えるソーラ・ヒートポンプ集熱運転切
換時間帯の予定の終了時点で、外気温度と貯湯槽の湯水
温度との両方がそれぞれ所定値以上のとき、ソーラ・ヒ
ートポンプ集熱運転切換時間帯を延長させることによ
り、太陽熱で得られるエネルギが高く、集熱効率がよい
のを利用して、低ランニングコストで効率よく貯湯槽の
湯水を昇温沸上し、しかも、外気温度と貯湯槽の湯水温
度のいずれか一方でも所定値以上でなければ延長しない
ので、例えばヒートポンプ集熱運転で所定時刻までに貯
湯槽の湯水を設定温度に沸上昇温させることも可能とな
る。[0017] At the end of a scheduled solar heat pump heat collection operation switching time period for switching between the solar heat collection operation and the heat pump heat collection operation, both the outside air temperature and the hot water temperature of the hot water storage tank are each equal to or higher than a predetermined value. By extending the solar heat pump heat collection operation switching time, the energy obtained by solar heat is high and the heat collection efficiency is high, and the hot water in the hot water storage tank is efficiently heated and boiled at a low running cost. In addition, since one of the outside air temperature and the hot water temperature of the hot water tank is not extended unless it is equal to or more than a predetermined value, for example, the hot water of the hot water tank is heated to a set temperature by a predetermined time by a heat pump heat collecting operation. Is also possible.

【００１８】請求項２記載の貯湯式給湯装置は、圧縮
機、凝縮器および蒸発器を有し、冷媒が循環されるヒー
トポンプ集熱器と、前記蒸発器と並列に接続されるソー
ラ集熱器と、前記圧縮機および凝縮器に対して蒸発器お
よびソーラ集熱器のいずれか一方を選択的に切換接続す
る切換手段と、前記凝縮器との熱交換によって湯水が昇
温沸上される貯湯槽と、外気温度を検知する外気温度検
知手段と、前記貯湯槽の湯水の温度を検知する湯水温度
検知手段と、前記ソーラ集熱運転の運転と停止とを切り
換えるソーラ集熱運転・停止切換時間帯の予定の終了時
点で、前記外気温度検知手段で検知される外気温度と前
記湯水温度検知手段で検知される湯水温度との両方がそ
れぞれ所定値以上のとき、ソーラ集熱運転・停止切換時
間帯を延長させる運転制御手段とを具備しているもので
ある。According to a second aspect of the present invention, there is provided a hot water storage type hot water supply apparatus comprising a compressor, a condenser and an evaporator, wherein a heat pump heat collector through which a refrigerant is circulated, and a solar heat collector connected in parallel with the evaporator. Switching means for selectively switching one of an evaporator and a solar collector to the compressor and the condenser; and hot water storage in which hot water is heated and boiled by heat exchange with the condenser. A tank, an outside air temperature detecting means for detecting an outside air temperature, a hot water temperature detecting means for detecting a temperature of hot water in the hot water storage tank, and a solar heat collecting operation / stop switching time for switching between operation and stop of the solar heat collecting operation When both the outside air temperature detected by the outside air temperature detecting means and the hot water temperature detected by the hot water temperature detecting means are respectively equal to or more than predetermined values at the end of the scheduled band, the solar heat collecting operation / stop switching time Luck to extend the belt In which and a control unit.

【００１９】そして、ソーラ集熱運転の運転と停止とを
切り換えるソーラ集熱運転・停止切換時間帯の予定の終
了時点で、外気温度と貯湯槽の湯水温度との両方がそれ
ぞれ所定値以上のとき、ソーラ集熱運転・停止切換時間
帯を長くすることにより、太陽熱で得られるエネルギが
高く、集熱効率がよいのを利用して、低ランニングコス
トで効率よく貯湯槽の湯水を昇温沸上し、しかも、外気
温度と貯湯槽の湯水温度のいずれか一方でも所定値以上
でなければソーラ集熱運転・停止切り換え時間帯を短く
するので、例えばヒートポンプ集熱運転で所定時刻まで
に貯湯槽の湯水を設定温度に沸上昇温させることも可能
となる。When both the outside air temperature and the hot / cold water temperature in the hot water storage tank are equal to or higher than predetermined values at the scheduled end of the solar heat collecting operation / stop switching time period for switching between the operation and the stop of the solar heat collecting operation. By increasing the solar heat collection operation / stop switching time, the energy obtained by the solar heat is high and the heat collection efficiency is high, and the water in the hot water storage tank can be heated and boiled efficiently at low running cost. In addition, if either one of the outside air temperature and the hot water temperature of the hot water storage tank does not exceed a predetermined value, the time period for switching between the solar heat collecting operation and the stop is shortened. Can be raised to the set temperature.

【００２０】請求項３記載の貯湯式給湯装置は、請求項
１または２記載の貯湯式給湯装置において、運転制御手
段は、少なくとも外気温度検知手段で検知される外気温
度が高い程、切換時間帯を長く延長させることにより、
太陽熱で得られるエネルギがより高く、集熱効率がより
よいのを利用して、低ランニングコストで効率よく貯湯
槽の湯水を昇温沸上する。According to a third aspect of the present invention, in the hot water supply type hot water supply device according to the first or second aspect, the operation control means includes a switching time zone which increases at least as the outside air temperature detected by the outside air temperature detection means increases. By extending the
Utilizing the fact that the energy obtained by solar heat is higher and the heat collection efficiency is better, the hot water in the hot water tank is heated and boiled efficiently at a low running cost.

【００２１】請求項４記載の貯湯式給湯装置は、請求項
１ないし３いずれか記載の貯湯式給湯装置において、運
転制御手段は、切換時間帯の延長終了後に、ヒートポン
プ集熱運転で貯湯槽の湯水を昇温沸上させることによ
り、このヒートポンプ集熱運転で貯湯槽の湯水を設定温
度まで沸上昇温させることが可能となる。According to a fourth aspect of the present invention, in the hot water supply type hot water supply apparatus according to any one of the first to third aspects, the operation control means includes: By raising the temperature of the hot water, it is possible to raise the temperature of the hot water in the hot water storage tank to the set temperature by the heat pump heat collecting operation.

【００２２】請求項５記載の貯湯式給湯装置は、請求項
４記載の貯湯式給湯装置において、運転制御手段による
切換時間帯の延長終了は、切換時間帯の延長終了後の所
定時刻までに、貯湯槽の湯水を設定温度に昇温沸上させ
るヒートポンプ集熱運転に必要とする時間を差し引いた
時刻とすることにより、所定時刻までに貯湯槽の湯水を
設定温度に確実に沸上昇温させることが可能となる。According to a fifth aspect of the present invention, in the hot water supply type hot water supply device according to the fourth aspect, the extension of the switching time zone by the operation control means is completed by a predetermined time after the completion of the extension of the switching time zone. The time required for the heat pump heat collection operation to raise the temperature of the hot water in the hot water tank to the set temperature is subtracted from the time required to ensure that the hot water in the hot water tank rises to the set temperature by the predetermined time. Becomes possible.

【００２３】[0023]

【発明の実施の形態】以下、本発明の一実施の形態を図
面を参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

【００２４】図１ないし図３に一実施の形態を示し、図
２において、11は貯湯槽で、先止押上式の給湯方式を採
用しており、貯湯槽11の下部に給水管路に連なる給水管
12が接続されているとともに、上部に給湯管路に連なる
給湯管13が接続されている。給水管路は、水道管に対し
て止水弁14および図示しないストレーナなどを介して接
続され、また、給湯管路は、止水弁15を介して、例えば
風呂場、台所および洗面所などに設置される給湯給水栓
などに接続される。FIG. 1 to FIG. 3 show an embodiment. In FIG. 2, reference numeral 11 denotes a hot water storage tank which adopts a push-up type hot water supply system, and is connected to a water supply pipe below the hot water storage tank 11. Water pipe
12 is connected, and a hot water supply pipe 13 connected to the hot water supply pipe is connected to the upper part. The water supply pipe is connected to the water pipe through a water stop valve 14 and a strainer (not shown), and the hot water supply pipe is connected to the water pipe through a water stop valve 15, for example, to a bathroom, a kitchen, a washroom, and the like. It is connected to the hot water tap and the like installed.

【００２５】貯湯槽11の下部には排水弁16を有する排水
管17が接続され、給湯管13には沸上時の水の膨脹分を逃
すための図示しない圧力逃し弁が接続されている。A drain pipe 17 having a drain valve 16 is connected to the lower part of the hot water storage tank 11, and a pressure relief valve (not shown) for releasing the expansion of water when boiling is connected to the hot water supply pipe 13.

【００２６】貯湯槽11の下部近傍には循環配管18が接続
され、この循環配管18には貯湯槽11内の湯水を強制的に
循環させる循環ポンプ19が配設されている。A circulation pipe 18 is connected in the vicinity of the lower part of the hot water tank 11, and a circulation pump 19 for forcibly circulating the hot water in the hot water tank 11 is provided in the circulation pipe 18.

【００２７】また、21はヒートポンプ集熱器で、圧縮機
22、凝縮器23、膨張弁24、蒸発器（エバポレータ）25お
よび気液分離器26を配管27，28，29，30を介して順次直
列接続した閉回路にて構成され、この閉回路に冷媒が封
入されている。圧縮機22はインバータ制御可能とするモ
ータを備えている。凝縮器23は循環配管18に接続され、
この凝縮器23が熱交換器31として構成されている。蒸発
器25は外気を送る送風ファン32およびこの送風ファン32
を回転させる送風モータ33を有している。Reference numeral 21 denotes a heat pump collector, which is a compressor.
22, a condenser 23, an expansion valve 24, an evaporator (evaporator) 25, and a gas-liquid separator 26 are sequentially connected in series via pipes 27, 28, 29, and 30 to form a closed circuit. Is enclosed. The compressor 22 has a motor that can be controlled by an inverter. The condenser 23 is connected to the circulation pipe 18,
The condenser 23 is configured as a heat exchanger 31. The evaporator 25 is a blower fan 32 for sending outside air and the blower fan 32
It has a blower motor 33 for rotating.

【００２８】また、34はソーラ集熱器で、配管28，29に
それぞれ接続される配管35，36を介して蒸発器25に並列
に接続されている。ソーラ集熱器34は、例えば屋根の上
などの日照条件の良好な場所に設置される。A solar collector 34 is connected in parallel to the evaporator 25 via pipes 35 and 36 connected to pipes 28 and 29, respectively. The solar collector 34 is installed in a place with good sunlight conditions, for example, on a roof.

【００２９】配管28と配管35とには、圧縮機22および凝
縮器23に対して蒸発器25またはソーラ集熱器34のいずれ
か一方を切換接続する切換手段としての電磁弁37，38が
それぞれ配設されている。すなわち、電磁弁37を開くと
ともに電磁弁38を閉じることにより、冷媒が蒸発器25に
流れてヒートポンプ集熱運転が実行され、一方、電磁弁
37を閉じるとともに電磁弁38を開くことにより、冷媒が
ソーラ集熱器34に流れてソーラ集熱運転が実行される。Solenoid valves 37 and 38 as switching means for switching and connecting either the evaporator 25 or the solar collector 34 to the compressor 22 and the condenser 23 are connected to the pipe 28 and the pipe 35, respectively. It is arranged. That is, by opening the solenoid valve 37 and closing the solenoid valve 38, the refrigerant flows to the evaporator 25 and the heat pump heat collection operation is performed.
By closing 37 and opening the solenoid valve 38, the refrigerant flows to the solar heat collector 34 and the solar heat collecting operation is executed.

【００３０】また、貯湯槽11の胴部外壁には、貯湯槽11
内の湯水の湯温および残湯量を検知する湯水温度検知手
段としての複数の湯水温度検知センサ41が配設されてい
るとともに、貯湯槽11内に導かれる給水温度を検知する
給水温度検知センサ42が配設されている。Also, on the outer wall of the trunk of hot water storage tank 11,
A plurality of hot water temperature detecting sensors 41 are provided as hot water temperature detecting means for detecting the hot water temperature and the remaining hot water amount in the hot water, and a hot water temperature detecting sensor 42 for detecting the hot water temperature guided into the hot water storage tank 11. Are arranged.

【００３１】また、製品の外部位置や製品の外部に連通
する内部位置には、外気温度を検知する外気温度検知手
段としての外気温度検知センサ43が配設されている。ソ
ーラ集熱器34には、集熱温度を検知する集熱温度検知セ
ンサ44が配設されている。An outside air temperature sensor 43 is provided at an outside position of the product or at an inside position communicating with the outside of the product. The solar heat collector 34 is provided with a heat collecting temperature detection sensor 44 for detecting a heat collecting temperature.

【００３２】また、51は運転制御手段としての制御装置
で、この制御装置51には、複数の湯水温度検知センサ4
1、給水温度検知センサ42、外気温度検知センサ43、集
熱温度検知センサ44などから検知信号が入力される。制
御装置51により、循環ポンプ19、圧縮機22、送風モータ
33、電磁弁37，38などが駆動制御される。Reference numeral 51 denotes a control device as operation control means. The control device 51 includes a plurality of hot and cold water temperature detection sensors 4.
1. Detection signals are input from the water supply temperature detection sensor 42, the outside air temperature detection sensor 43, the heat collection temperature detection sensor 44, and the like. By the control device 51, the circulation pump 19, the compressor 22, the blower motor
The drive of the solenoid valves 33 and 38 is controlled.

【００３３】制御装置51は、ソーラ集熱運転とヒートポ
ンプ集熱運転とを切り換えるソーラ・ヒートポンプ集熱
運転切換時間帯の予定の終了時点で、外気温度検知セン
サ43で検知される外気温度と湯水温度検知センサ41で検
知される湯水温度との両方がそれぞれ所定値以上のと
き、ソーラ・ヒートポンプ集熱運転切換時間帯を延長さ
せる運転制御手段の機能を有している。さらに、この運
転制御手段の機能では、外気温度検知センサ43で検知さ
れる外気温度（湯水温度検知センサ41で検知される湯水
温度）が高い程、ソーラ・ヒートポンプ集熱運転切換時
間帯を長く延長させる機能、ソーラ・ヒートポンプ集熱
運転切換時間帯の延長終了後に、ヒートポンプ集熱運転
で貯湯槽11内の湯水を昇温沸上させる機能を有してい
る。運転制御手段による切換時間帯の延長終了は、ソー
ラ・ヒートポンプ集熱運転切換時間帯の延長終了後の所
定時刻までに、貯湯槽11内の湯水を設定温度に昇温沸上
させるヒートポンプ集熱運転に必要とする時間を差し引
いた時刻とする。At the end of the scheduled time of the solar heat pump heat collection operation switching time period for switching between the solar heat collection operation and the heat pump heat collection operation, the control device 51 controls the outside air temperature and the hot water temperature detected by the outside air temperature detection sensor 43. When both of the hot and cold water temperatures detected by the detection sensor 41 are each equal to or higher than a predetermined value, it has a function of an operation control means for extending a solar heat pump heat collection operation switching time zone. Further, in the function of the operation control means, the higher the outside air temperature detected by the outside air temperature detection sensor 43 (water temperature detected by the water temperature detection sensor 41), the longer the solar heat pump heat collection operation switching time period is extended. And a function of raising the temperature of the hot water in the hot water storage tank 11 by the heat pump heat collection operation after the extension of the solar heat pump heat collection operation switching time period. The extension of the switching time period by the operation control means is completed by a heat pump heat collection operation in which the temperature of the water in the hot water storage tank 11 is raised to the set temperature by a predetermined time after the extension of the solar heat pump heat collection operation switching time period. Time after subtracting the time required for

【００３４】そして、ソーラ集熱運転について説明する
と、電磁弁37が閉じられるとともに電磁弁38が開かれ、
圧縮機22が低回転数で駆動される。これにより、図２に
実線矢印で示すように、圧縮機22、凝縮器23、ソーラ集
熱器34、気液分離器26の順に冷媒が流れる。Next, the solar heat collecting operation will be described. The electromagnetic valve 37 is closed and the electromagnetic valve 38 is opened.
The compressor 22 is driven at a low rotation speed. As a result, the refrigerant flows through the compressor 22, the condenser 23, the solar collector 34, and the gas-liquid separator 26 in this order, as indicated by the solid arrows in FIG.

【００３５】ソーラ集熱器34で太陽熱により気化された
冷媒が凝縮器23に送られて液化され、冷媒の熱が凝縮器
23から循環配管18内の湯水に与えられて熱交換される。The refrigerant vaporized by the solar heat in the solar collector 34 is sent to the condenser 23 and liquefied, and the heat of the refrigerant is
The heat is given to the hot water in the circulation pipe 18 from the heat exchanger 23 and heat exchange is performed.

【００３６】このとき、循環ポンプ19が駆動され、貯湯
槽11の下部側の湯水（水）が循環配管18を通じて貯湯槽
11内に再び戻るように強制循環され、貯湯槽11内の湯水
の全量を対象に沸き上げられる。At this time, the circulation pump 19 is driven, and hot water (water) on the lower side of the hot water storage tank 11 is passed through the circulation pipe 18.
It is forcibly circulated to return to the inside of the hot water tank 11 again, and the entire amount of hot water in the hot water storage tank 11 is boiled.

【００３７】また、ヒートポンプ集熱運転について説明
すると、電磁弁37が開かれるとともに電磁弁38が閉じら
れ、圧縮機22が高回転数で駆動され、送風ファン32が駆
動される。これにより、図２に破線矢印で示すように、
圧縮機22、凝縮器23、膨張弁24、蒸発器25、気液分離器
26の順に冷媒が流れる。In the heat pump heat collecting operation, the solenoid valve 37 is opened and the solenoid valve 38 is closed, the compressor 22 is driven at a high rotation speed, and the blower fan 32 is driven. As a result, as indicated by the dashed arrow in FIG.
Compressor 22, condenser 23, expansion valve 24, evaporator 25, gas-liquid separator
The refrigerant flows in the order of 26.

【００３８】蒸発器25により外気との間で熱交換されて
気化された冷媒が圧縮機22で圧縮されて凝縮器23で液化
され、冷媒の熱が凝縮器23から循環配管18内の湯水に与
えられて熱交換される。The refrigerant, which has undergone heat exchange with the outside air by the evaporator 25 and is vaporized, is compressed by the compressor 22 and liquefied by the condenser 23, and the heat of the refrigerant is transferred from the condenser 23 to the hot and cold water in the circulation pipe 18. Given and heat exchanged.

【００３９】このとき、循環ポンプ19が駆動され、貯湯
槽11の下部側の湯水（水）が循環配管18を通じて貯湯槽
11内に再び戻るように強制循環され、貯湯槽11内の湯水
の全量を対象に沸き上げられる。At this time, the circulation pump 19 is driven, and hot water (water) on the lower side of the hot water tank 11 is
It is forcibly circulated to return to the inside of the hot water tank 11 again, and the entire amount of hot water in the hot water storage tank 11 is boiled.

【００４０】次に、図１において、制御装置51は、運転
モードとして、標準運転モード、ソーラ集熱運転モード
およびヒートポンプ集熱運転モードを有し、いずれかの
運転モードによって貯湯槽11の湯水の昇温沸上のための
運転が行なわれる。Next, in FIG. 1, the control device 51 has, as operation modes, a standard operation mode, a solar heat collection operation mode, and a heat pump heat collection operation mode. An operation for raising the temperature is performed.

【００４１】標準運転モードでは、複数（本実施の形態
では３つで、図中に(1)(2)(3) と示す）の運転パターン
を有している。In the standard operation mode, there are a plurality of operation patterns (three in this embodiment, indicated by (1), (2), and (3) in the figure).

【００４２】７時から８時までの時間帯においては、各
運転パターンとも共通であり、貯湯槽11の給水温度検知
センサ42によって検知される給水温度が例えば冬期であ
るために設定値よりも低い場合には湯を多く使用する夕
刻までに湯水を確実に確保するために予めヒートポンプ
集熱運転し、給水温度が例えば夏期であるために設定値
よりも高い場合には運転を行なわない。In the time period from 7:00 to 8:00, the operation pattern is common to all the operation patterns, and the water supply temperature detected by the water supply temperature detection sensor 42 of the hot water storage tank 11 is lower than the set value because it is in winter, for example. In this case, a heat pump heat collecting operation is performed in advance to ensure hot water by the evening when a large amount of hot water is used, and the operation is not performed when the supply water temperature is higher than a set value due to, for example, summertime.

【００４３】８時からはソーラ・ヒートポンプ集熱運転
切換時間帯となり、ソーラ集熱器34の集熱温度検知セン
サ44により検知される集熱温度が設定値よりも高い場合
にはソーラ集熱運転を行ない、低い場合にはヒートポン
プ集熱運転を行なう。From 8:00, the solar heat pump heat collecting operation switching time period is reached. If the heat collecting temperature detected by the heat collecting temperature detection sensor 44 of the solar heat collector 34 is higher than the set value, the solar heat collecting operation is performed. If the temperature is low, a heat pump heat collection operation is performed.

【００４４】このとき、ヒートポンプ集熱運転からソー
ラ集熱運転への切り換え、またはソーラ集熱運転からヒ
ートポンプ集熱運転への切り換えは、図３に示すよう
に、集熱温度検知センサ44によって検知されるソーラ集
熱器34の集熱温度が予め複数段階に別けて設定された各
設定温度領域をそれぞれ対応する設定時間継続したこと
を条件として行なわれる。At this time, switching from the heat pump heat collecting operation to the solar heat collecting operation or switching from the solar heat collecting operation to the heat pump heat collecting operation is detected by the heat collecting temperature detecting sensor 44 as shown in FIG. The operation is performed under the condition that the heat collecting temperature of the solar heat collector 34 continues in each set temperature range previously set in a plurality of stages for the corresponding set time.

【００４５】ヒートポンプ集熱運転からソーラ集熱運転
への切り換えの場合には、集熱温度が低い程、継続時間
が長い条件となるとともに、集熱温度が高い程、継続時
間が短い条件となる。すなわち、集熱温度Ｔが５０℃以
上６０℃未満の場合には２０分継続することが条件とな
り、６０℃以上８０℃未満の場合には１０分継続するこ
とが条件となり、８０℃以上の場合には５分継続するこ
とが条件となる。In the case of switching from the heat pump heat collecting operation to the solar heat collecting operation, the lower the heat collecting temperature, the longer the duration, and the higher the heat collecting temperature, the shorter the duration. . In other words, if the heat collection temperature T is 50 ° C. or more and less than 60 ° C., the condition is that it lasts 20 minutes. If it is 60 ° C. or more and less than 80 ° C., it is a condition that it lasts 10 minutes. Is required to last for 5 minutes.

【００４６】ソーラ集熱運転からヒートポンプ集熱運転
への切り換えの場合には、集熱温度が高い程、継続時間
が長い条件となるとともに、集熱温度が低い程、継続時
間が短い条件となる。すなわち、集熱温度Ｔが４０℃以
上４９℃未満の場合には２０分継続することが条件とな
り、３０℃以上４０℃未満の場合には１０分継続するこ
とが条件となり、３０℃未満の場合には５分継続するこ
とが条件となる。In the case of switching from the solar heat collecting operation to the heat pump heat collecting operation, the higher the heat collecting temperature, the longer the duration, and the lower the heat collecting temperature, the shorter the duration. . That is, when the heat collection temperature T is 40 ° C. or more and less than 49 ° C., the condition is that it lasts 20 minutes. When it is 30 ° C. or more and less than 40 ° C., it is a condition that it lasts 10 minutes. Is required to last for 5 minutes.

【００４７】このように、ソーラ集熱器34の集熱温度に
応じて変化する継続時間の条件にて、ヒートポンプ集熱
運転とソーラ集熱運転とを切換タイミングを設定するこ
とにより、継続時間の条件を常に一定時間とした場合に
比べて、ソーラ集熱できる機会を逃したりソーラ集熱の
効率が悪い状態を継続することなく、適切に運転を切り
換えることができる。As described above, by setting the timing of switching between the heat pump heat collecting operation and the solar heat collecting operation under the condition of the continuous time that changes according to the heat collecting temperature of the solar heat collector 34, the continuous time is reduced. As compared with the case where the condition is always set to a fixed time, the operation can be switched appropriately without missing an opportunity to collect solar heat or continuing the state in which the efficiency of solar heat collection is poor.

【００４８】そして、ソーラ・ヒートポンプ集熱運転切
換時間帯は例えば１２時を予定の終了時刻（終了時点）
とし、１２時の時点で、湯水温度検知センサ41で検知さ
れる貯湯槽11の湯水温度が３０℃以上で、かつ外気温度
検知センサ43で検知される外気温度が２０℃以下である
と、第１の運転パターンを選択設定し、ソーラ・ヒート
ポンプ集熱運転切換時間帯を直ぐに停止する。これは、
貯湯槽11の湯水温度が３０℃以上の場合に、外気温度が
２０℃以下では、太陽熱で得られるエネルギが低く、集
熱効率が悪いので、ここでソーラ・ヒートポンプ集熱運
転からヒートポンプ集熱運転に切り換えないと、湯を多
く使用する夕刻までに貯湯槽11の湯水を所定温度に沸き
上げられない可能性があることによる。The solar heat pump heat collecting operation switching time zone is, for example, 12:00 at the scheduled end time (end time).
At 12:00, if the hot water temperature of the hot water storage tank 11 detected by the hot water temperature detection sensor 41 is 30 ° C. or more and the outside air temperature detected by the outside air temperature detection sensor 43 is 20 ° C. or less, 1 operation pattern is selected and set, and the solar heat pump heat collection operation switching time zone is immediately stopped. this is,
When the temperature of hot water in the hot water storage tank 11 is 30 ° C. or higher, and when the outside air temperature is 20 ° C. or lower, the energy obtained by solar heat is low and the heat collection efficiency is low. Without switching, there is a possibility that the hot water in the hot water storage tank 11 cannot be heated to the predetermined temperature by the evening when much hot water is used.

【００４９】１２時の時点で、湯水温度検知センサ41で
検知される貯湯槽11の湯水温度が３０℃以上で、かつ外
気温度検知センサ43で検知される外気温度が２０℃を越
えて３０℃以下であると、太陽熱で得られるエネルギが
高く、集熱効率がよいので、第２の運転パターンを選択
設定し、ソーラ・ヒートポンプ集熱運転切換時間帯を例
えば１時間延長し、１３時まで継続して行なう。その
後、延長時間が経過した時点で、ソーラ・ヒートポンプ
集熱運転切換時間帯を停止する。At 12:00, the hot water temperature of the hot water storage tank 11 detected by the hot water temperature detecting sensor 41 is 30 ° C. or more, and the outside air temperature detected by the outside air temperature detecting sensor 43 exceeds 20 ° C. and reaches 30 ° C. If it is below, the energy obtained by solar heat is high and the heat collection efficiency is good, so the second operation pattern is selected and set, the solar heat pump heat collection operation switching time zone is extended, for example, by one hour, and is continued until 13:00. Do it. Thereafter, when the extension time has elapsed, the solar heat pump heat collection operation switching time zone is stopped.

【００５０】１２時の時点で、湯水温度検知センサ41で
検知される貯湯槽11の湯水温度が３０℃以上で、かつ外
気温度検知センサ43で検知される外気温度が３０℃を越
えると、太陽熱で得られるエネルギがより高く、集熱効
率がよりよいので、第３の運転パターンを選択設定し、
ソーラ・ヒートポンプ集熱運転切換時間帯を例えば２時
間延長し、１４時まで継続して行なう。その後、延長時
間が経過した時点で、ソーラ・ヒートポンプ集熱運転切
換時間帯を停止する。At 12:00, if the temperature of the hot water in the hot water storage tank 11 detected by the hot water temperature detecting sensor 41 is 30 ° C. or higher and the outside air temperature detected by the outside air temperature detecting sensor 43 exceeds 30 ° C., Since the energy obtained in is higher and the heat collection efficiency is better, the third operation pattern is selected and set,
The solar heat pump heat collecting operation switching time zone is extended, for example, by 2 hours, and is continuously performed until 14:00. Thereafter, when the extension time has elapsed, the solar heat pump heat collection operation switching time zone is stopped.

【００５１】そして、各運転パターンにおいて、ソーラ
・ヒートポンプ集熱運転切換時間帯の終了時点で、ヒー
トポンプ集熱運転に切り換え、貯湯槽11の湯水を設定温
度に沸き上がるまでヒートポンプ集熱運転を行なう。In each operation pattern, at the end of the solar heat pump heat collection operation switching time period, the operation mode is switched to the heat pump heat collection operation, and the heat pump heat collection operation is performed until the water in the hot water storage tank 11 is heated to the set temperature.

【００５２】また、ソーラ集熱運転モードでは、７時か
ら１７時までの時間帯において、ソーラ集熱器34の集熱
温度検知センサ44により検知される集熱温度が設定値よ
り高い場合にはソーラ集熱運転を行ない、集熱温度が設
定値よりも低い場合にはソーラ集熱運転を停止する。１
７時までに設定温度に沸き上がるか１７時になるとソー
ラ集熱運転を停止する。In the solar heat collecting operation mode, when the heat collecting temperature detected by the heat collecting temperature detecting sensor 44 of the solar heat collector 34 is higher than the set value in the time period from 7:00 to 17:00. The solar heat collecting operation is performed, and when the heat collecting temperature is lower than the set value, the solar heat collecting operation is stopped. 1
When the temperature reaches the set temperature by 7:00 or at 17:00, the solar heat collection operation is stopped.

【００５３】また、ヒートポンプ集熱運転モードでは、
７時から設定温度に沸き上がるまでヒートポンプ運転を
行なう。In the heat pump heat collecting operation mode,
The heat pump operation is performed from 7:00 until the temperature reaches the set temperature.

【００５４】以上のように、標準運転モードにおいて、
ソーラ集熱運転とヒートポンプ集熱運転とを天候に応じ
て切り換えるソーラ・ヒートポンプ集熱運転切換時間帯
の予定の終了時点で、外気温度と貯湯槽11の湯水温度と
の両方がそれぞれ所定値以上のとき、ソーラ・ヒートポ
ンプ集熱運転切換時間帯を延長させることにより、太陽
熱で得られるエネルギが高く、集熱効率がよいのを利用
して、低ランニングコストで効率よく貯湯槽11の湯水を
昇温沸上でき、しかも、外気温度と貯湯槽11の湯水温度
のいずれか一方でも所定値以上でなければ延長しないの
で、ヒートポンプ集熱運転で所定時刻すなわち湯を多く
使用する夕刻までに貯湯槽11の湯水を設定温度に沸上昇
温させることができる。As described above, in the standard operation mode,
At the end of the scheduled time of the solar heat pump heat collecting operation switching time period in which the solar heat collecting operation and the heat pump heat collecting operation are switched according to the weather, both the outside air temperature and the hot water temperature of the hot water storage tank 11 are each equal to or higher than a predetermined value. When the solar heat pump heat collection operation switching time is extended, the energy obtained by solar heat is high and the heat collection efficiency is high. In addition, since either the outside air temperature or the hot water temperature of the hot water storage tank 11 is not extended unless it is equal to or more than a predetermined value, the hot water in the hot water storage tank 11 is not used until a predetermined time, that is, in the evening when a lot of hot water is used in the heat pump heat collecting operation. Can be raised to the set temperature.

【００５５】しかも、外気温度が高い程、ソーラ・ヒー
トポンプ集熱運転切換時間帯を長く延長させることによ
り、太陽熱で得られるエネルギがより高く、集熱効率が
よりよいのを利用して、低ランニングコストで効率よく
貯湯槽11の湯水を昇温沸上できる。In addition, as the outside air temperature is higher, the solar heat pump heat collecting operation switching time period is extended longer, so that the energy obtained by solar heat is higher and the heat collecting efficiency is better, and low running cost is obtained. Thus, the temperature of the hot water in the hot water storage tank 11 can be raised efficiently.

【００５６】また、ソーラ・ヒートポンプ集熱運転切換
時間帯の延長終了後に、ヒートポンプ集熱運転で貯湯槽
11の湯水を昇温沸上させることにより、このヒートポン
プ集熱運転で貯湯槽11の湯水を設定温度まで沸上昇温さ
せることができる。After the extension of the solar heat pump heat collection operation switching time period is completed, the heat pump heat collection operation is performed to store the hot water in the hot water storage tank.
By raising the temperature of the hot and cold water 11, the hot water in the hot water storage tank 11 can be heated to the set temperature by the heat pump heat collection operation.

【００５７】また、ソーラ・ヒートポンプ集熱運転切換
時間帯の延長終了の時刻は、ソーラ・ヒートポンプ集熱
運転切換時間帯の延長終了後の所定時刻すなわち湯を多
く使用する夕刻までに、貯湯槽11の湯水を設定温度まで
昇温沸上させるためにヒートポンプ集熱運転に必要とす
る時間を差し引いた時刻とすることにより、夕刻のほぼ
同時刻に貯湯槽11の湯水を設定温度に確実に沸上昇温さ
せることができる。The time at which the extension of the solar heat pump heat collection operation switching time period ends is a predetermined time after the completion of the extension of the solar heat pump heat collection operation switching time period, that is, by the evening when hot water is used a lot. The time required for the heat pump heat collection operation is subtracted to raise the temperature of the hot water to the set temperature. Can be warmed.

【００５８】次に、図４に他の実施の形態を示して説明
する。Next, another embodiment will be described with reference to FIG.

【００５９】なお、貯湯式給湯装置の構成は、前述した
実施の形態の図２に示した貯湯式給湯装置と同様に構成
されており省略する。The configuration of the hot water supply type hot water supply apparatus is the same as that of the hot water supply type hot water supply apparatus shown in FIG.

【００６０】制御装置51は、ソーラ集熱運転モードにお
いて、ソーラ集熱運転の運転と停止とを切り換えるソー
ラ集熱運転・停止切換時間帯の予定の終了時点で、外気
温度検知センサ43で検知される外気温度と湯水温度検知
センサ41で検知される湯水温度との両方がそれぞれ所定
値以上のとき、ソーラ集熱運転・停止切換時間帯を延長
させる運転制御手段の機能を有している。さらに、この
運転制御手段の機能では、外気温度検知センサ43で検知
される外気温度、湯水温度検知センサ41で検知される湯
水温度が高い程、切換時間帯を長く延長させる機能、ソ
ーラ集熱運転・停止切換時間帯の延長終了後に、ヒート
ポンプ集熱運転で貯湯槽11内の湯水を昇温沸上させる機
能を有している。運転制御手段による切換時間帯の延長
終了は、ソーラ集熱運転・停止切換時間帯の延長終了後
の所定時刻までに、貯湯槽11内の湯水を設定温度に昇温
沸上させるヒートポンプ集熱運転に必要とする時間を差
し引いた時刻とする。In the solar heat collecting operation mode, the controller 51 detects the outside air temperature detection sensor 43 at the scheduled end of the solar heat collecting operation / stop switching time period for switching between the operation and the stop of the solar heat collecting operation. When both the outside air temperature and the hot and cold water temperature detected by the hot and cold water temperature detection sensor 41 are each equal to or higher than a predetermined value, it has a function of operation control means for extending the solar heat collecting operation / stop switching time zone. Further, the function of the operation control means includes a function of extending the switching time period as the outside air temperature detected by the outside air temperature detection sensor 43 and the hot water temperature detected by the hot water temperature detection sensor 41 are increased, and a solar heat collecting operation. -It has a function of raising the temperature of the hot water in the hot water storage tank 11 by the heat pump heat collection operation after the extension of the stop switching time period is completed. The extension of the switching time zone by the operation control means is completed by a heat pump heat collection operation in which the temperature of the hot water in the hot water storage tank 11 is raised to a set temperature by a predetermined time after the extension of the solar heat collecting operation / stop switching time zone. Time after subtracting the time required for

【００６１】図４において、制御装置51は、運転モード
として、標準運転モード、ソーラ集熱運転モードおよび
ヒートポンプ集熱運転モードを有し、いずれかの運転モ
ードによって貯湯槽11の湯水の昇温沸上のための運転が
行なわれる。In FIG. 4, the control device 51 has a standard operation mode, a solar heat collection operation mode, and a heat pump heat collection operation mode as operation modes. Driving for the top is performed.

【００６２】標準運転モードでは、７時から８時までの
時間帯において、貯湯槽11の給水温度検知センサ42によ
って検知される給水温度が設定値よりも低い場合には夕
方までに湯水を確実に確保するために予めヒートポンプ
集熱運転し、給水温度が設定値よりも高い場合には運転
を行なわない。８時から１２時までのソーラ・ヒートポ
ンプ集熱運転切換時間帯において、ソーラ集熱器34の集
熱温度検知センサ44により検知される集熱温度が設定値
よりも高い場合にはソーラ集熱運転を行ない、低い場合
にはヒートポンプ集熱運転を行なう。１２時以降の時間
帯において、設定温度に沸き上がるまではヒートポンプ
集熱運転を行なう。In the standard operation mode, if the water supply temperature detected by the water supply temperature detection sensor 42 of the hot water storage tank 11 is lower than the set value during the time period from 7:00 to 8:00, the hot water is surely supplied by the evening. The heat pump heat collecting operation is performed in advance to secure the temperature, and the operation is not performed when the supply water temperature is higher than a set value. If the heat collection temperature detected by the heat collection temperature detection sensor 44 of the solar heat collector 34 is higher than the set value during the solar heat pump heat collection operation switching time period from 8:00 to 12:00, the solar heat collection operation is performed. If the temperature is low, a heat pump heat collection operation is performed. In the time zone after 12:00, the heat pump heat collecting operation is performed until the temperature reaches the set temperature.

【００６３】また、ソーラ集熱運転モードでは、沸増し
設定なしパターンと、沸増し設定ありパターンとがあ
り、沸増し設定ありパターンでは、複数（本実施の形態
では３つで、図中に(1)(2)(3) と示す）の運転パターン
を有している。In the solar heat collecting operation mode, there is a pattern without boiling setting and a pattern with boiling setting. In the pattern with boiling setting, a plurality (three in the present embodiment, 1) (2) (3)).

【００６４】沸増し設定なしパターンでは、７時から１
７時までのソーラ集熱運転・停止切換時間帯において、
ソーラ集熱器34の集熱温度検知センサ44により検知され
る集熱温度が設定値より高い場合にはソーラ集熱運転を
行ない、集熱温度が設定値よりも低い場合にはソーラ集
熱運転を停止する。１７時までに設定温度に沸き上がる
か１７時になるとソーラ集熱運転を停止する。In the case of the pattern without the setting of additional boiling, 1 from 7:00.
In the solar heat collection operation / stop switching time until 7:00,
When the heat collecting temperature detected by the heat collecting temperature detection sensor 44 of the solar heat collector 34 is higher than the set value, the solar heat collecting operation is performed. When the heat collecting temperature is lower than the set value, the solar heat collecting operation is performed. To stop. When the temperature rises to the set temperature by 17:00 or at 17:00, the solar heat collection operation is stopped.

【００６５】また、沸増し設定ありパターンでは、各運
転パターンとも、７時からソーラ集熱運転・停止切換時
間帯となり、ソーラ集熱器34の集熱温度検知センサ44に
より検知される集熱温度が設定値より高い場合にはソー
ラ集熱運転を行ない、集熱温度が設定値よりも低い場合
にはソーラ集熱運転を停止する。Further, in the pattern with the setting of increased boiling, in each of the operation patterns, the solar heat collecting operation / stop switching time period starts at 7:00, and the heat collecting temperature detected by the heat collecting temperature detecting sensor 44 of the solar heat collector 34. Is higher than the set value, the solar heat collecting operation is performed. If the heat collecting temperature is lower than the set value, the solar heat collecting operation is stopped.

【００６６】ソーラ集熱運転・停止切換時間帯は例えば
１２時を予定の終了時刻（終了時点）とし、１２時の時
点で、湯水温度検知センサ41で検知される貯湯槽11の湯
水温度が３０℃未満または３０℃以上で、かつ外気温度
検知センサ43で検知される外気温度が２０℃以下である
と、第１の運転パターンを選択設定し、ソーラ集熱運転
・停止切換時間帯を直ぐに停止する。これは、貯湯槽11
の湯水温度が３０℃未満または３０℃以上の場合に、外
気温度が２０℃以下では、太陽熱で得られるエネルギが
低く、集熱効率が悪いので、ここでソーラ集熱運転から
ヒートポンプ集熱運転に切り換えないと、湯を多く使用
する夕刻までに貯湯槽11の湯水を所定温度に沸き上げら
れない可能性があることによる。The solar heat collecting operation / stop switching time period is, for example, 12:00 as a scheduled end time (end time). At 12:00, the hot water temperature of the hot water storage tank 11 detected by the hot water temperature sensor 41 is 30. If the temperature is lower than 30 ° C. or 30 ° C. or higher and the outside air temperature detected by the outside air temperature detection sensor 43 is 20 ° C. or lower, the first operation pattern is selected and set, and the solar heat collection operation / stop switching time zone is immediately stopped. I do. This is hot water tank 11
If the hot and cold water temperature is lower than 30 ° C or higher than 30 ° C, if the outside air temperature is lower than 20 ° C, the energy obtained by solar heat is low and the heat collecting efficiency is poor. Otherwise, there is a possibility that the hot water in the hot water storage tank 11 cannot be heated to the predetermined temperature by the evening when much hot water is used.

【００６７】１２時の時点で、湯水温度検知センサ41で
検知される貯湯槽11の湯水温度が３０℃以上で、かつ外
気温度検知センサ43で検知される外気温度が２０℃を越
えて３０℃以下であると、太陽熱で得られるエネルギが
高く、集熱効率がよいので、第２の運転パターンを選択
設定し、ソーラ集熱運転・停止切換時間帯を例えば２時
間延長し、１４時までソーラ集熱運転を継続して行な
う。その後、延長時間が経過した時点で、ソーラ集熱運
転・停止切換時間帯を停止する。At 12:00, the hot water temperature of the hot water storage tank 11 detected by the hot water temperature detecting sensor 41 is 30 ° C. or more, and the outside air temperature detected by the outside air temperature detecting sensor 43 exceeds 20 ° C. and reaches 30 ° C. If it is below, since the energy obtained by solar heat is high and the heat collection efficiency is good, the second operation pattern is selected and set, the solar heat collection operation / stop switching time zone is extended by, for example, 2 hours, and the solar heat collection is performed until 14:00. Continue thermal operation. Thereafter, when the extension time has elapsed, the solar heat collection operation / stop switching time zone is stopped.

【００６８】１２時の時点で、湯水温度検知センサ41で
検知される貯湯槽11の湯水温度が３０℃以上で、かつ外
気温度検知センサ43で検知される外気温度が３０℃を越
えると、太陽熱で得られるエネルギがより高く、集熱効
率がよりよいので、第３の運転パターンを選択設定し、
ソーラ集熱運転・停止切換時間帯を例えば４時間延長
し、１６時までソーラ集熱運転を継続して行なう。その
後、延長時間が経過した時点で、ソーラ集熱運転・停止
切換時間帯を停止する。At 12:00, if the hot water temperature of the hot water storage tank 11 detected by the hot water temperature detecting sensor 41 is 30 ° C. or more and the outside air temperature detected by the outside air temperature detecting sensor 43 exceeds 30 ° C., the solar heat Since the energy obtained in is higher and the heat collection efficiency is better, the third operation pattern is selected and set,
The solar heat collecting operation / stop switching time period is extended, for example, by 4 hours, and the solar heat collecting operation is continuously performed until 16:00. Thereafter, when the extension time has elapsed, the solar heat collection operation / stop switching time zone is stopped.

【００６９】そして、各運転パターンにおいて、ソーラ
集熱運転・停止切換時間帯の終了時点で、ヒートポンプ
集熱運転に切り換え、貯湯槽11の湯水を設定温度に沸き
上がるまでヒートポンプ集熱運転を行なう。Then, in each operation pattern, at the end of the solar heat collecting operation / stop switching time period, the operation mode is switched to the heat pump heat collecting operation, and the heat pump heat collecting operation is performed until the water in the hot water storage tank 11 is heated to the set temperature.

【００７０】また、ヒートポンプ集熱運転モードでは、
７時から設定温度に沸き上がるまでヒートポンプ運転を
行なう。In the heat pump heat collecting operation mode,
The heat pump operation is performed from 7:00 until the temperature reaches the set temperature.

【００７１】以上のように、ソーラ集熱運転モードにお
いて、ソーラ集熱運転の運転と停止とを天候に応じて切
り換えるソーラ集熱運転・停止切換時間帯の予定の終了
時点で、外気温度と貯湯槽11の湯水温度との両方がそれ
ぞれ所定値以上のとき、ソーラ集熱運転・停止切換時間
帯を長くすることにより、太陽熱で得られるエネルギが
高く、集熱効率がよいのを利用して、低ランニングコス
トで効率よく貯湯槽11の湯水を昇温沸上でき、しかも、
外気温度と貯湯槽11の湯水温度のいずれか一方でも所定
値以上でなければソーラ集熱運転・停止切り換え時間帯
を短くするので、ヒートポンプ集熱運転で所定時刻すな
わち湯を多く使用する夕刻までに貯湯槽11の湯水を設定
温度に沸上昇温させることができる。As described above, in the solar heat collecting operation mode, when the solar heat collecting operation / stop switching time period in which the operation and the stop of the solar heat collecting operation are switched according to the weather, the outside air temperature and the hot water storage When both the hot and cold water temperatures of the tank 11 are equal to or higher than the respective predetermined values, by extending the solar heat collecting operation / stop switching time period, the energy obtained by solar heat is high and the heat collecting efficiency is good, Efficiently raises the temperature of the hot water in the hot water storage tank 11 at the running cost.
If at least one of the outside air temperature and the hot water temperature of the hot water storage tank 11 is not equal to or more than the predetermined value, the solar heat collecting operation / stop switching time period is shortened. The temperature of the hot water in the hot water storage tank 11 can be raised to the set temperature.

【００７２】しかも、外気温度が高い程、ソーラ集熱運
転・停止切換時間帯を長く延長させることにより、太陽
熱で得られるエネルギがより高く、集熱効率がよりよい
のを利用して、低ランニングコストで効率よく貯湯槽11
の湯水を昇温沸上できる。In addition, as the outside air temperature is higher, the solar heat collection operation / stop switching time period is extended, so that the energy obtained by the solar heat is higher and the heat collection efficiency is better, and low running cost is obtained. And efficient hot water storage tank 11
Can be heated and boiled.

【００７３】また、ソーラ集熱運転・停止切換時間帯の
延長終了後に、ヒートポンプ集熱運転で貯湯槽11の湯水
を昇温沸上させることにより、このヒートポンプ集熱運
転で貯湯槽11の湯水を設定温度まで沸上昇温させること
ができる。After the extension of the solar heat collecting operation / stop switching time period, the water in the hot water storage tank 11 is raised by heating and boiling the hot water in the hot water storage tank 11 by the heat pump heat collecting operation. The boiling temperature can be raised to the set temperature.

【００７４】また、ソーラ集熱運転・停止切換時間帯の
延長終了の時刻は、ソーラ集熱運転・停止切換時間帯の
延長終了後の所定時刻すなわち湯を多く使用する夕刻ま
でに、貯湯槽11の湯水を設定温度まで昇温沸上させるた
めにヒートポンプ集熱運転に必要とする時間を差し引い
た時刻とすることにより、夕刻のほぼ同時刻に貯湯槽11
の湯水を設定温度に確実に沸上昇温させることができ
る。The extension time of the solar heat collecting operation / stop switching time period is set to a predetermined time after the extension of the solar heat collecting operation / stop switching time period, that is, by the evening when hot water is used a lot. By subtracting the time required for the heat pump heat collection operation to raise the temperature of the hot water to the set temperature and boiling, the hot water storage tank 11 is almost at the same time in the evening.
The temperature of the hot water can be reliably raised to the set temperature.

【００７５】なお、１つの制御装置51で、図１に示す実
施の形態の標準運転モードと図４に示す実施の形態のソ
ーラ集熱運転モードとの両方を実行するように構成する
こともできる。この場合、それら両方のモードに対応し
て、低ランニングコストで効率よく貯湯槽11の湯水を昇
温沸上できる。A single control device 51 may be configured to execute both the standard operation mode of the embodiment shown in FIG. 1 and the solar heat collection operation mode of the embodiment shown in FIG. . In this case, the hot water in the hot water storage tank 11 can be efficiently heated and boiled at a low running cost corresponding to both of these modes.

【００７６】また、ソーラ・ヒートポンプ集熱運転切換
時間帯またはソーラ集熱運転・停止切換時間帯の予定の
終了時点で、判定を行なう貯湯槽11の湯水温度の値、お
よび外気温度の値は、前記実施の形態に示される値に限
らず、貯湯式給湯装置を設置する地域などに応じて適宜
に他の値に設定してもよい。At the end of the scheduled time of the solar heat pump heat collecting operation switching time zone or the solar heat collecting operation / stop switching time period, the value of the hot water temperature of the hot water storage tank 11 and the value of the outside air temperature to be determined are as follows: The value is not limited to the value shown in the above embodiment, and may be set to another value as appropriate according to the area where the hot water storage device is installed.

【００７７】また、ソーラ・ヒートポンプ集熱運転切換
時間帯またはソーラ集熱運転・停止切換時間帯の予定の
終了時刻は、１２時に限らず、貯湯式給湯装置を設置す
る地域などに応じて他の時刻に設定してもよいし、ある
いは複数設定してもよい。Further, the scheduled end time of the solar heat pump heat collecting operation switching time zone or the solar heat collecting operation / stop switching time period is not limited to 12:00, and may vary depending on the area where the hot water storage type hot water supply device is installed. The time may be set, or a plurality of times may be set.

【００７８】[0078]

【発明の効果】請求項１記載の貯湯式給湯装置によれ
ば、ソーラ集熱運転とヒートポンプ集熱運転とを切り換
えるソーラ・ヒートポンプ集熱運転切換時間帯の予定の
終了時点で、外気温度と貯湯槽の湯水温度との両方がそ
れぞれ所定値以上のとき、ソーラ・ヒートポンプ集熱運
転切換時間帯を延長させることにより、太陽熱で得られ
るエネルギが高く、集熱効率がよいのを利用して、低ラ
ンニングコストで効率よく貯湯槽の湯水を昇温沸上で
き、しかも、外気温度と貯湯槽の湯水温度のいずれか一
方でも所定値以上でなければ延長しないので、例えばヒ
ートポンプ集熱運転で所定時刻までに貯湯槽の湯水を設
定温度に沸上昇温させることもできる。According to the first aspect of the present invention, the outside air temperature and hot water storage at the scheduled end of the solar heat pump heat collection operation switching time period for switching between the solar heat collection operation and the heat pump heat collection operation. When both the bath water temperature and the bath water temperature are each equal to or higher than a predetermined value, by extending the solar heat pump heat collection operation switching time period, the energy obtained by solar heat is high and the heat collection efficiency is good, and low running is used. It is possible to raise the temperature of the hot water in the hot water tank efficiently at a low cost, and furthermore, if either one of the outside air temperature and the hot water temperature of the hot water tank does not exceed a predetermined value, it will not be extended. The temperature of the hot water in the hot water storage tank can be raised to the set temperature.

【００７９】請求項２記載の貯湯式給湯装置によれば、
ソーラ集熱運転の運転と停止とを切り換えるソーラ集熱
運転・停止切換時間帯の予定の終了時点で、外気温度と
貯湯槽の湯水温度との両方がそれぞれ所定値以上のと
き、ソーラ集熱運転・停止切換時間帯を延長させること
により、太陽熱で得られるエネルギが高く、集熱効率が
よいのを利用して、低ランニングコストで効率よく貯湯
槽の湯水を昇温沸上でき、しかも、外気温度と貯湯槽の
湯水温度のいずれか一方でも所定値以上でなければ延長
しないので、例えばヒートポンプ集熱運転で所定時刻ま
でに貯湯槽の湯水を設定温度に沸上昇温させることもで
きる。According to the hot water supply type hot water supply device of the second aspect,
When both the outside air temperature and the water temperature of the hot water storage tank are respectively equal to or higher than predetermined values at a scheduled end of a solar heat collecting operation / stop switching time period for switching between operation and stop of the solar heat collecting operation, the solar heat collecting operation is performed.・ By extending the stop switching time, the energy obtained by the solar heat is high and the heat collection efficiency is high, so that the running water in the hot water tank can be raised and boiled efficiently at low running cost, and the outside air temperature If either one of the temperature of the hot water tank and the hot water temperature of the hot water tank is not equal to or more than the predetermined value, it is not extended, so that the hot water of the hot water tank can be heated to the set temperature by a predetermined time by the heat pump heat collecting operation.

【００８０】請求項３記載の貯湯式給湯装置によれば、
請求項１または２記載の貯湯式給湯装置の効果に加え
て、少なくとも外気温度が高い程、切換時間帯を長く延
長させることにより、太陽熱で得られるエネルギがより
高く、集熱効率がよりよいのを利用して、低ランニング
コストで効率よく貯湯槽の湯水を昇温沸上できる。According to the hot water storage type hot water supply device of the third aspect,
In addition to the effect of the hot water storage type hot water supply device according to claim 1 or 2, at least the higher the outside air temperature, the longer the switching time period, the higher the energy obtained by solar heat and the better the heat collection efficiency. Utilizing this method, the water in the hot water storage tank can be heated and boiled efficiently at low running cost.

【００８１】請求項４記載の貯湯式給湯装置によれば、
請求項１ないし３いずれか記載の貯湯式給湯装置の効果
に加えて、切換時間帯の延長終了後に、ヒートポンプ集
熱運転で貯湯槽の湯水を昇温沸上させることにより、こ
のヒートポンプ集熱運転で貯湯槽の湯水を設定温度まで
沸上昇温させることができる。According to the hot water storage type hot water supply device of the fourth aspect,
In addition to the effect of the hot water storage type hot water supply device according to any one of claims 1 to 3, the heat pump heat collection operation is performed by raising the temperature of the hot water in the hot water storage tank by the heat pump heat collection operation after the extension of the switching time period. The temperature of the hot water in the hot water tank can be raised to the set temperature.

【００８２】請求項５記載の貯湯式給湯装置によれば、
請求項４記載の貯湯式給湯装置の効果に加えて、運転制
御手段による切換時間帯の延長終了は、切換時間帯の延
長終了後の所定時刻までに、貯湯槽の湯水を設定温度に
昇温沸上させるヒートポンプ集熱運転に必要とする時間
を差し引いた時刻とすることにより、所定時刻までに貯
湯槽の湯水を設定温度に確実に沸上昇温させることがで
きる。According to the hot water storage type hot water supply device of the fifth aspect,
In addition to the effect of the hot water storage type hot water supply device according to the fourth aspect, the extension of the switching time zone by the operation control means is completed by raising the temperature of the hot water in the hot water storage tank to a predetermined temperature by a predetermined time after the extension of the switching time zone. By setting the time after subtracting the time required for the heat pump heat collection operation for boiling, the boiling water in the hot water storage tank can be reliably heated to the set temperature by the predetermined time.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の一実施の形態を示す貯湯式給湯装置の
各運転モードでの運転状態を示すタイムチャートであ
る。FIG. 1 is a time chart showing an operation state in each operation mode of a hot water supply type hot water supply apparatus according to an embodiment of the present invention.

【図２】同上貯湯式給湯装置の構成図である。FIG. 2 is a configuration diagram of the hot water storage type hot water supply apparatus.

【図３】同上ソーラ集熱運転とヒートポンプ集熱運転と
の切換タイミングを説明する説明図である。FIG. 3 is an explanatory diagram for explaining a switching timing between a solar heat collecting operation and a heat pump heat collecting operation.

【図４】本発明の他の実施の形態を示す貯湯式給湯装置
の各運転モードでの運転状態を示すタイムチャートであ
る。FIG. 4 is a time chart showing an operation state in each operation mode of a hot water supply type hot water supply apparatus according to another embodiment of the present invention.

【図５】従来の貯湯式給湯装置の各運転モードでの運転
状態を示すタイムチャートである。FIG. 5 is a time chart showing an operation state in each operation mode of the conventional hot water supply type hot water supply apparatus.

【図６】従来の他の貯湯式給湯装置の各運転モードでの
運転状態を示すタイムチャートである。FIG. 6 is a time chart showing an operation state in each operation mode of another conventional hot water supply type hot water supply apparatus.

【符号の説明】[Explanation of symbols]

11 貯湯槽 21 ヒートポンプ集熱器 22 圧縮機 23 凝縮器 25 蒸発器 34 ソーラ集熱器 37，38 切換手段としての電磁弁 41 湯水温度検知手段としての湯水温度検知センサ 43 外気温度検知手段としての外気温度検知センサ 51 運転制御手段としての制御装置 11 Hot water storage tank 21 Heat pump collector 22 Compressor 23 Condenser 25 Evaporator 34 Solar collector 37, 38 Solenoid valve as switching means 41 Hot water temperature detecting sensor as hot water temperature detecting means 43 Outside air as outside air temperature detecting means Temperature detection sensor 51 Control device as operation control means

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 圧縮機、凝縮器および蒸発器を有し、冷
媒が循環されるヒートポンプ集熱器と、 前記蒸発器と並列に接続されるソーラ集熱器と、 前記圧縮機および凝縮器に対して蒸発器およびソーラ集
熱器のいずれか一方を選択的に切換接続する切換手段
と、 前記凝縮器との熱交換によって湯水が昇温沸上される貯
湯槽と、 外気温度を検知する外気温度検知手段と、 前記貯湯槽の湯水の温度を検知する湯水温度検知手段
と、 前記ソーラ集熱運転とヒートポンプ集熱運転とを切り換
えるソーラ・ヒートポンプ集熱運転切換時間帯の予定の
終了時点で、前記外気温度検知手段で検知される外気温
度と前記湯水温度検知手段で検知される湯水温度との両
方がそれぞれ所定値以上のとき、ソーラ・ヒートポンプ
集熱運転切換時間帯を延長させる運転制御手段とを具備
していることを特徴とする貯湯式給湯装置。1. A heat pump collector having a compressor, a condenser, and an evaporator and circulating a refrigerant, a solar collector connected in parallel with the evaporator, and a compressor and a condenser. Switching means for selectively switching one of an evaporator and a solar heat collector, a hot water storage tank in which hot water is heated and boiled by heat exchange with the condenser, and an outside air for detecting an outside air temperature. Temperature detection means, hot and cold water temperature detection means for detecting the temperature of hot water in the hot water storage tank, at the end of the scheduled time of the solar heat pump heat collection operation switching time zone to switch between the solar heat collection operation and the heat pump heat collection operation, When both the outside air temperature detected by the outside air temperature detecting means and the hot water temperature detected by the hot water temperature detecting means are respectively equal to or more than predetermined values, an operation of extending the solar heat pump heat collecting operation switching time zone. A hot water supply type hot water supply device comprising: a control unit. 【請求項２】 圧縮機、凝縮器および蒸発器を有し、冷
媒が循環されるヒートポンプ集熱器と、 前記蒸発器と並列に接続されるソーラ集熱器と、 前記圧縮機および凝縮器に対して蒸発器およびソーラ集
熱器のいずれか一方を選択的に切換接続する切換手段
と、 前記凝縮器との熱交換によって湯水が昇温沸上される貯
湯槽と、 外気温度を検知する外気温度検知手段と、 前記貯湯槽の湯水の温度を検知する湯水温度検知手段
と、 前記ソーラ集熱運転の運転と停止とを切り換えるソーラ
集熱運転・停止切換時間帯の予定の終了時点で、前記外
気温度検知手段で検知される外気温度と前記湯水温度検
知手段で検知される湯水温度との両方がそれぞれ所定値
以上のとき、ソーラ集熱運転・停止切換時間帯を延長さ
せる運転制御手段とを具備していることを特徴とする貯
湯式給湯装置。2. A heat pump collector having a compressor, a condenser, and an evaporator, in which a refrigerant is circulated; a solar collector connected in parallel with the evaporator; and a compressor and the condenser. Switching means for selectively switching one of an evaporator and a solar heat collector, a hot water storage tank in which hot water is heated and boiled by heat exchange with the condenser, and an outside air for detecting an outside air temperature. Temperature detecting means, hot and cold water temperature detecting means for detecting the temperature of hot and cold water in the hot water storage tank, at the end of a scheduled solar heat collecting operation / stop switching time zone for switching between operation and stop of the solar heat collecting operation, When both the outside air temperature detected by the outside air temperature detecting means and the hot and cold water temperature detected by the hot and cold water temperature detecting means are respectively equal to or more than predetermined values, an operation control means for extending the solar heat collecting operation / stop switching time zone is provided. Have A hot water storage type hot water supply device characterized by the following. 【請求項３】 運転制御手段は、少なくとも外気温度検
知手段で検知される外気温度が高い程、切換時間帯を長
く延長させることを特徴とする請求項１または２記載の
貯湯式給湯装置。3. The hot water supply apparatus according to claim 1, wherein the operation control means extends the switching time period at least as the outside air temperature detected by the outside air temperature detection means increases. 【請求項４】 運転制御手段は、切換時間帯の延長終了
後に、ヒートポンプ集熱運転で貯湯槽の湯水を昇温沸上
させることを特徴とする請求項１ないし３いずれか記載
の貯湯式給湯装置。4. The hot water supply type hot water supply according to claim 1, wherein the operation control means raises the temperature of the hot water in the hot water storage tank by a heat pump heat collection operation after the extension of the switching time period. apparatus. 【請求項５】 運転制御手段による切換時間帯の延長終
了は、切換時間帯の延長終了後の所定時刻までに、貯湯
槽の湯水を設定温度に昇温沸上させるヒートポンプ集熱
運転に必要とする時間を差し引いた時刻とすることを特
徴とする請求項４記載の貯湯式給湯装置。5. The end of the extension of the switching time period by the operation control means is necessary for a heat pump heat collection operation for raising the temperature of the hot water in the hot water storage tank to the set temperature by a predetermined time after the extension of the switching time period is completed. 5. The hot water storage type hot water supply apparatus according to claim 4, wherein the time is obtained by subtracting a time for performing the hot water supply.
JP10310541A 1998-10-30 1998-10-30 Storage type water heater Pending JP2000130863A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10310541A JP2000130863A (en) 1998-10-30 1998-10-30 Storage type water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10310541A JP2000130863A (en) 1998-10-30 1998-10-30 Storage type water heater

Publications (1)

Publication Number Publication Date
JP2000130863A true JP2000130863A (en) 2000-05-12

Family

ID=18006488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10310541A Pending JP2000130863A (en) 1998-10-30 1998-10-30 Storage type water heater

Country Status (1)

Country Link
JP (1) JP2000130863A (en)

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