JP2011141076A - Heat pump type hot water supply device - Google Patents

Heat pump type hot water supply device Download PDF

Info

Publication number
JP2011141076A
JP2011141076A JP2010001665A JP2010001665A JP2011141076A JP 2011141076 A JP2011141076 A JP 2011141076A JP 2010001665 A JP2010001665 A JP 2010001665A JP 2010001665 A JP2010001665 A JP 2010001665A JP 2011141076 A JP2011141076 A JP 2011141076A
Authority
JP
Japan
Prior art keywords
hot water
storage tank
water storage
heat pump
pipe
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.)
Granted
Application number
JP2010001665A
Other languages
Japanese (ja)
Other versions
JP5431175B2 (en
Inventor
Hiroshi Kikuchi
洋 菊池
Makoto Honma
誠 本間
Masami Omomo
正己 大桃
Original Assignee
Corona Corp
株式会社コロナ
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 Corona Corp, 株式会社コロナ filed Critical Corona Corp
Priority to JP2010001665A priority Critical patent/JP5431175B2/en
Publication of JP2011141076A publication Critical patent/JP2011141076A/en
Application granted granted Critical
Publication of JP5431175B2 publication Critical patent/JP5431175B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that water of intermediate temperature which is not boiled up by a heat pump type heating means, is increased day by day. <P>SOLUTION: This heat pump type hot water supply device includes a switching means 30 for switching returning of hot water/water heated by the heat pump type heating means 21 to an upper part of a hot water storage tank 1 through a boiling-up pipe 29, and returning of the same to an intermediate part of the hot water storage tank 1 through an intermediate return pipe 28, and a control means 39 for switching the switching means 30 to an intermediate return pipe 28 side in starting a boiling-up operation, to return the hot water boiled up by the heat pump type heating means 21 to the intermediate part of the hot water storage tank 1 from the intermediate return pipe 28 so that the hot water at an upper part with respect to the intermediate return pipe 28 in the hot water storage tank 1, is heated, then switching the switching means 30 to an upper part side of the hot water storage tank 1, of the boiling-up pipe 29 to return the hot water boiled up by the heat pump type heating means 21 to the upper part of the hot water storage tank 1. Thus the water of intermediate temperature can be reduced by heating the water of intermediate temperature by the water of high temperature from the intermediate return pipe 28 in starting the boiling-up. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、ヒートポンプ式加熱手段で貯湯タンク内の湯水を沸き上げるヒートポンプ貯湯式給湯装置に関するものである。   The present invention relates to a heat pump hot water storage type hot water supply apparatus that boils hot water in a hot water storage tank with a heat pump heating means.
従来よりこの種のヒートポンプ貯湯式給湯装置においては、特許文献1に示されるように、貯湯タンクの下部から取り出した水をヒートポンプ式加熱手段で沸き上げ目標温度に加熱して貯湯タンクの上部から戻すようにしたものがある。そして、給湯の際は、貯湯タンク下部からの給水により貯湯タンク上部または中間部から沸き上げられた湯が出湯されることで給湯を行い、貯湯タンク内には上部に高温の湯、下部に低温の水、それらの境界層に中間温度の中温水が位置する状態となる。   Conventionally, in this kind of heat pump hot water storage type hot water supply apparatus, as shown in Patent Document 1, water taken out from the lower part of the hot water storage tank is heated to the target temperature by the heat pump heating means and returned from the upper part of the hot water storage tank. There is something like that. When hot water is supplied, hot water boiled from the upper or middle part of the hot water storage tank is supplied by water supplied from the lower part of the hot water storage tank, and hot water is supplied to the hot water tank. Water, and intermediate temperature water is located in the boundary layer between them.
そして、この従来のものでは、電力料金単価の安価な深夜時間帯でのヒートポンプ式加熱手段での沸き上げ時には、貯湯タンク下部の低温の水のみを沸き上げ、貯湯タンク内の中温水を残して沸き上げ運転を終了するようにしてヒートポンプ式加熱手段の加熱効率の悪化を防止しているものであった。   And in this conventional one, when boiling with the heat pump heating means in the midnight time zone where the unit price of electricity is low, only the low-temperature water at the bottom of the hot water tank is boiled, leaving the medium temperature water in the hot water tank. The heating operation of the heat pump heating means was prevented from deteriorating by terminating the boiling operation.
特開2005−49054号公報JP 2005-49054 A
ところが、この従来のものでは、貯湯タンク内にフロ加熱用等の間接熱交換器を配設して、貯湯タンク内の熱をフロ加熱等に用いると、図5(A)のように貯湯タンク内の間接熱交換器の上端と冷水層との間に50℃程度の中温水が多量に生成される。そして、深夜時間帯となると、図5(B)のように冷水層のみを沸き上げて、生成された中温水は全て残して深夜沸き上げを行うため、翌日の深夜時間帯の開始時刻には、図5(C)のように間接熱交換器との熱交換によって新たに中温水が生成されると共に、前日の中温水がさらに温度低下した状態で残り、日ごとに中温水の量が増加してしまうこととなる。   However, in this conventional apparatus, when an indirect heat exchanger for flow heating or the like is disposed in the hot water storage tank and the heat in the hot water storage tank is used for flow heating or the like, the hot water storage tank as shown in FIG. A large amount of medium-temperature water of about 50 ° C. is generated between the upper end of the indirect heat exchanger and the cold water layer. And when it is the midnight time zone, as shown in FIG. 5 (B), only the cold water layer is boiled, and all the generated medium warm water is left and heated at midnight. As shown in FIG. 5 (C), medium temperature water is newly generated by heat exchange with the indirect heat exchanger, and the temperature of the previous day's medium temperature water is further lowered, and the amount of medium temperature water increases every day. Will end up.
このように、中温水の量が増加してしまうと、貯湯タンクの蓄熱可能量を減らしてしまい、湯切れの可能性が高くなってしまうと共に、残っている中温水の温度が沸き上げ可能な温度まで低下したとしてもヒートポンプ式加熱手段の加熱効率の悪化を招き、電力使用量を増加してしまうものであった。   Thus, if the amount of intermediate temperature water increases, the amount of heat storage in the hot water storage tank is reduced, the possibility of running out of hot water increases, and the temperature of the remaining intermediate temperature water can be raised. Even if the temperature is lowered, the heating efficiency of the heat pump heating means is deteriorated, and the power consumption is increased.
そこで、本発明は上記課題を解決するため、湯水を貯湯する貯湯タンクと、前記貯湯タンク下部に給水するための給水管と、前記貯湯タンク上部から出湯するための出湯管と、前記貯湯タンク下部に接続された取水管と、前記取水管から取り出した湯水を加熱して沸き上げるヒートポンプ式加熱手段と、前記ヒートポンプ式加熱手段で加熱した湯水を前記貯湯タンクの上部に戻す沸き上げ管と、前記沸き上げ管から分岐され前記貯湯タンクの中間部に接続された中間戻し管と、前記沸き上げ管と前記中間戻し管との分岐部に設けられ、前記ヒートポンプ式加熱手段で沸き上げた湯水を前記沸き上げ管を介して前記貯湯タンクの上部に戻すか、前記中間戻し管を介して前記貯湯タンクの中間部に戻すかを切り換える切換手段と、沸き上げ運転開始時に、前記切換手段を前記中間戻し管側に切り換え、前記ヒートポンプ式加熱手段で沸き上げた湯を前記中間戻し管から前記貯湯タンクの中間部に戻し、前記貯湯タンク内の前記中間戻し管よりも上部の湯を昇温した後に、前記切換手段を前記沸き上げ管の前記貯湯タンクの上部側へ切り換え、前記ヒートポンプ式加熱手段で沸き上げた湯を前記貯湯タンクの上部に戻すようにした制御手段とを備えたものとした。   Therefore, in order to solve the above problems, the present invention provides a hot water storage tank for storing hot water, a water supply pipe for supplying water to the lower part of the hot water storage tank, a hot water discharge pipe for discharging hot water from the upper part of the hot water storage tank, and the lower part of the hot water storage tank. A water intake pipe connected to the water supply pipe, a heat pump heating means for heating and boiling hot water taken out from the water intake pipe, a water heating pipe for returning the hot water heated by the heat pump heating means to the upper part of the hot water storage tank, and An intermediate return pipe branched from the boiling pipe and connected to an intermediate part of the hot water storage tank, and provided at a branch part of the boiling pipe and the intermediate return pipe, the hot water boiled by the heat pump heating means is A switching means for switching between returning to the upper part of the hot water storage tank via the boiling pipe or returning to the intermediate part of the hot water tank via the intermediate return pipe; Sometimes, the switching means is switched to the intermediate return pipe side, the hot water boiled by the heat pump heating means is returned from the intermediate return pipe to the intermediate portion of the hot water storage tank, and more than the intermediate return pipe in the hot water storage tank. Control means for switching the switching means to the upper side of the hot water storage tank of the boiling pipe after raising the temperature of the hot water in the upper part, and returning the hot water heated by the heat pump heating means to the upper part of the hot water storage tank And provided.
また、前記制御手段は、沸き上げ運転開始時に、前記貯湯タンク内の前記中間戻し管よりも上部に所定の温度範囲の中温水が存在する場合に、前記切換手段を前記中間戻し管側に切り換え、前記ヒートポンプ式加熱手段で沸き上げた湯を前記中間戻し管から前記貯湯タンクの中間部に戻し、前記貯湯タンク内の前記中間戻し管よりも上部の湯を前記所定の温度範囲よりも高い温度まで昇温し、一方、沸き上げ運転開始時に、前記貯湯タンク内の前記中間戻し管よりも上部に所定の温度範囲の中温水が存在しない場合、前記切換手段を前記沸き上げ管の前記貯湯タンクの上部側へ切り換え、前記ヒートポンプ式加熱手段で沸き上げた湯を前記貯湯タンクの上部に戻すようにした。   The control means switches the switching means to the intermediate return pipe side at the start of the boiling operation when intermediate temperature water in a predetermined temperature range exists above the intermediate return pipe in the hot water storage tank. The hot water boiled by the heat pump heating means is returned from the intermediate return pipe to the intermediate portion of the hot water storage tank, and the hot water above the intermediate return pipe in the hot water storage tank has a temperature higher than the predetermined temperature range. On the other hand, when there is no medium temperature water in a predetermined temperature range above the intermediate return pipe in the hot water storage tank at the start of the boiling operation, the switching means is connected to the hot water storage tank of the hot water pipe. The hot water boiled by the heat pump heating means is returned to the upper part of the hot water storage tank.
また、前記貯湯タンク内の前記中間戻し管よりも上部に外部流体と熱交換するための内熱交換器を設けたものとした。   In addition, an internal heat exchanger for exchanging heat with an external fluid is provided above the intermediate return pipe in the hot water storage tank.
また、前記貯湯タンク内の湯水と外部流体とを熱交換するための外熱交換器と、前記貯湯タンク上部から取り出した湯水を前記外熱交換器へ循環させ、前記貯湯タンクの下部または中間部へ戻す外部循環回路とを設けたものとした。   Further, an external heat exchanger for exchanging heat between the hot water in the hot water storage tank and an external fluid, and hot water taken out from the upper part of the hot water storage tank are circulated to the external heat exchanger, and a lower part or an intermediate part of the hot water storage tank And an external circuit for returning to the ground.
また、前記ヒートポンプ式加熱手段は、冷媒に二酸化炭素冷媒を用い、高圧側で超臨界となる超臨界ヒートポンプサイクルとした。   The heat pump heating means is a supercritical heat pump cycle that uses carbon dioxide refrigerant as a refrigerant and becomes supercritical on the high-pressure side.
以上のように、本発明によれば、貯湯タンク内に残る再沸き上げ時の沸き上げ効率の悪い中温水をヒートポンプ式加熱手段で直接沸き上げることなく昇温して中温水の量を減少することができるので、貯湯タンクの蓄熱可能量の低下を抑制できて湯切れの可能性を低下することができると共に、中温水の再沸き上げによるヒートポンプ式加熱手段での加熱効率の悪化を招くことがなく、電力使用量を抑えて機器の効率を向上することができる。   As described above, according to the present invention, the amount of medium-temperature water is reduced by raising the temperature of the medium-temperature water having poor boiling efficiency at the time of re-boiling remaining in the hot water storage tank without directly boiling it with the heat pump heating means. As a result, it is possible to suppress a decrease in the heat storage capacity of the hot water storage tank and reduce the possibility of running out of hot water, and incur deterioration of the heating efficiency of the heat pump heating means due to re-boiling of the medium temperature water. Therefore, it is possible to reduce the amount of power used and improve the efficiency of the device.
本発明の一実施形態の概略構成図。The schematic block diagram of one Embodiment of this invention. 同一実施形態の作動を説明するためのフローチャート図。The flowchart for demonstrating the action | operation of the same embodiment. 同一実施形態の貯湯状態を説明するための図で、(A)は沸き上げ運転の開始前、(B)は中間沸き上げの終了時、(C)は沸き上げ運転の終了時、(D)は翌日の沸き上げ運転の開始前の貯湯状態を示す。It is a figure for demonstrating the hot water storage state of the same embodiment, (A) is before the start of boiling operation, (B) is the end of intermediate boiling, (C) is the end of boiling operation, (D) Indicates the hot water storage state before the start of the next day's boiling operation. 本発明の別の実施形態の概略構成図。The schematic block diagram of another embodiment of this invention. 従来のヒートポンプ式給湯装置の貯湯状態を説明するための図で、(A)は沸き上げ運転の開始前、(B)は沸き上げ運転の終了時、(C)は翌日の沸き上げ運転の開始前の貯湯状態を示す。It is a figure for demonstrating the hot water storage state of the conventional heat pump type hot-water supply apparatus, (A) is before the start of boiling operation, (B) is the end of boiling operation, (C) is the start of boiling operation of the next day. Shows the previous hot water storage status.
次に、本発明の一実施形態について図面に基づいて説明する。
1は湯水を貯湯するステンレス製の貯湯タンク、2は貯湯タンク1底部に市水を給水する給水管、3は貯湯タンク1頂部から出湯する出湯管、4は給水管2から分岐された給水バイパス管、5は出湯管3からの湯と給水バイパス管4からの水とを給湯設定温度になるように混合する給湯混合弁、6は給湯混合弁5で混合された湯が流通する給湯管、7は給湯管6からの湯を給湯する給湯栓、8は給湯管6途中に設けられ給湯温度を検出する給湯温度センサ、9は給湯管6途中に設けられ給湯量を検出する給湯流量センサ、10は給水管2に設けられ市水の給水圧を一定の圧力に減圧する減圧弁、11は貯湯タンク1内の過圧を逃がす過圧逃がし弁である。
Next, an embodiment of the present invention will be described with reference to the drawings.
1 is a stainless steel hot water storage tank for storing hot water, 2 is a water supply pipe for supplying city water to the bottom of the hot water storage tank 1, 3 is a hot water discharge pipe for discharging hot water from the top of the hot water storage tank 1, 4 is a water supply bypass branched from the water supply pipe 2 A hot water mixing valve that mixes hot water from the hot water discharge pipe 3 and water from the hot water supply bypass pipe 4 so as to reach a hot water supply set temperature, 6 is a hot water supply pipe through which hot water mixed by the hot water mixing valve 5 flows, 7 is a hot-water tap for supplying hot water from the hot-water supply pipe 6, 8 is a hot-water supply temperature sensor for detecting the hot-water supply temperature provided in the middle of the hot-water supply pipe 6, and 9 is a hot-water supply flow rate sensor for detecting the amount of hot water provided in the middle of the hot-water supply pipe 6. A pressure reducing valve 10 is provided in the water supply pipe 2 to reduce the supply pressure of city water to a constant pressure, and 11 is an overpressure relief valve for releasing the overpressure in the hot water storage tank 1.
12は浴槽、13は貯湯タンク1内の上部に設けられ貯湯タンク1内の湯の熱で外部流体としての浴槽水を加熱するための内熱交換器、14は浴槽12と内熱交換器13とを浴槽水が循環可能に接続するフロ循環回路、15はフロ循環回路14途中に設けられ浴槽水を循環させるフロ循環ポンプ、16は給湯管6から分岐されフロ循環回路14に接続された湯張り管、17は湯張り管16途中に設けられ湯張り管16を開閉する湯張り開閉弁、18はフロ循環回路14途中に設けられ浴槽12から内熱交換器13へ流れる浴槽水の温度を検出するフロ温度センサである。ここで、内熱交換器13はステンレス管を螺旋状に巻回した構成としている。   Reference numeral 12 denotes a bathtub, 13 is an internal heat exchanger provided in the upper part of the hot water storage tank 1 for heating the bathtub water as an external fluid by the heat of the hot water in the hot water storage tank 1, and 14 is the bathtub 12 and the internal heat exchanger 13. Is connected to the flow circulation circuit 14, and 15 is a flow circulation pump for circulating the bath water provided in the flow circulation circuit 14, and 16 is a hot water branched from the hot water supply pipe 6 and connected to the flow circulation circuit 14. A tension pipe 17 is provided in the middle of the hot water filling pipe 16 and opens and closes the hot water filling pipe 16, and 18 is provided in the middle of the flow circulation circuit 14, and the temperature of the bathtub water flowing from the bathtub 12 to the internal heat exchanger 13 is determined. It is a flow temperature sensor to detect. Here, the internal heat exchanger 13 has a configuration in which a stainless steel tube is spirally wound.
19は内熱交換器13の下方の貯湯タンク1中間部から出湯させて出湯管3へ合流させるための中間出湯管、20は中間出湯管19と出湯管3との合流点に設けられて貯湯タンク1の上部からの湯と貯湯タンク1の中間部からの湯の何れか一方あるいは両方を混合して給湯混合弁5の湯側に流入させるための中間切替弁である。   Reference numeral 19 denotes an intermediate hot water pipe for discharging the hot water from the intermediate portion of the hot water storage tank 1 below the internal heat exchanger 13 to join the hot water discharge pipe 3, and 20 is provided at the junction of the intermediate hot water discharge pipe 19 and the hot water discharge pipe 3. This is an intermediate switching valve for mixing either one or both of hot water from the upper part of the tank 1 and hot water from the intermediate part of the hot water storage tank 1 and flowing it into the hot water side of the hot water supply mixing valve 5.
21は加熱手段としてのヒートポンプ式加熱手段で、冷媒を圧縮する圧縮機22と、冷媒と水とを熱交換する冷媒水熱交換器23と、冷媒の圧力を減圧する減圧器24と、液冷媒を蒸発させる蒸発器25とを備え、蒸発器25で吸熱した冷媒を圧縮機22で圧縮して冷媒水熱交換器23を介して水を加熱するようにしている。このヒートポンプ式加熱手段21には冷媒として二酸化炭素冷媒が用いられ、高圧側が超臨界状態となることにより水を90℃の高温まで加熱することができるものである。   21 is a heat pump type heating means as a heating means, a compressor 22 for compressing the refrigerant, a refrigerant water heat exchanger 23 for exchanging heat between the refrigerant and water, a decompressor 24 for reducing the pressure of the refrigerant, and a liquid refrigerant The evaporator 25 evaporates the refrigerant, and the refrigerant absorbed by the evaporator 25 is compressed by the compressor 22 to heat the water via the refrigerant water heat exchanger 23. A carbon dioxide refrigerant is used as the refrigerant in the heat pump type heating means 21, and the water can be heated to a high temperature of 90 ° C. when the high pressure side becomes a supercritical state.
26は貯湯タンク1の下部と冷媒水熱交換器23の水側と貯湯タンク1の上部とを湯水が循環可能に接続する加熱循環回路、27は加熱循環回路26途中に設けられた加熱循環ポンプ、28は加熱循環回路26の冷媒水熱交換器23よりも下流側の沸き上げ管29途中で分岐され貯湯タンク1の中間部とを接続する中間戻し管、30は冷媒水熱交換器23で加熱された湯を沸き上げ管29を介して貯湯タンク1上部へ戻すか中間戻し管28を介して貯湯タンク1中間部へ戻すかを切り換える三方弁より成る切換手段である。ここで中間戻し管28は貯湯タンク1の間接熱交換器13の上端より下方の貯湯タンク1の側面に接続されており、間接熱交換器13の下端付近に接続されているのが好ましい。   A heating circulation circuit 26 connects the lower part of the hot water storage tank 1, the water side of the refrigerant water heat exchanger 23, and the upper part of the hot water storage tank 1 so that hot water can circulate, and 27 a heating circulation pump provided in the middle of the heating circulation circuit 26. , 28 is an intermediate return pipe that branches off in the middle of the boiling pipe 29 downstream of the refrigerant water heat exchanger 23 of the heating circuit 26 and connects the intermediate portion of the hot water storage tank 1, and 30 is the refrigerant water heat exchanger 23. It is a switching means comprising a three-way valve that switches whether heated hot water is returned to the upper part of the hot water storage tank 1 via the boiling pipe 29 or returned to the intermediate part of the hot water storage tank 1 via the intermediate return pipe 28. Here, the intermediate return pipe 28 is connected to the side surface of the hot water storage tank 1 below the upper end of the indirect heat exchanger 13 of the hot water storage tank 1, and is preferably connected to the vicinity of the lower end of the indirect heat exchanger 13.
31は冷媒水熱交換器23へ流入する水の温度を検出する入水温度センサ、32は冷媒水熱交換器23で加熱された湯の温度を検出する沸き上げ温度センサ、33は貯湯タンク1の側面の上下方向に複数設けられた貯湯温度センサで、貯湯タンク1内の湯水の温度を検出するためのものであり、上から33a、33b、33c、33d、33e、33fと呼ぶ。なお、これら貯湯温度センサ33a〜fの内、33bは内熱交換器13の中間部付近かつ中間戻し管28よりも上方の貯湯温度を検出する位置に設けられ、33cは内熱交換器13の下端より下方かつ中間戻し管28よりも下方の貯湯温度を検出する位置に設けられているものである。   31 is a water temperature sensor that detects the temperature of water flowing into the refrigerant water heat exchanger 23, 32 is a boiling temperature sensor that detects the temperature of hot water heated by the refrigerant water heat exchanger 23, and 33 is a hot water storage tank 1. A plurality of hot water storage temperature sensors provided in the vertical direction of the side surface are used to detect the temperature of hot water in the hot water storage tank 1, and are referred to as 33a, 33b, 33c, 33d, 33e, and 33f from the top. Of these hot water storage temperature sensors 33a to 33f, 33b is provided at a position near the middle portion of the internal heat exchanger 13 and above the intermediate return pipe 28 to detect the hot water storage temperature, and 33c is the internal heat exchanger 13's. It is provided at a position for detecting the hot water storage temperature below the lower end and below the intermediate return pipe 28.
34はリモコンで、給湯装置に関する各種の情報(給湯設定温度、フロ設定温度、残湯量、給湯装置の作動状態等)を表示する表示部35と、給湯設定温度およびフロ設定温度を設定操作するための温度設定スイッチ36と、浴槽12へ一定量の湯張りを指示する湯張りスイッチ37と、浴槽水の追焚きを指示する追焚きスイッチ38とを備えている。   Reference numeral 34 denotes a remote controller for setting and operating a display unit 35 for displaying various information related to the hot water supply device (hot water supply set temperature, flow set temperature, remaining hot water amount, operating state of the hot water supply device, etc.), and hot water set temperature and flow set temperature. Temperature setting switch 36, a hot water switch 37 for instructing the bathtub 12 to fill a certain amount of water, and a reheating switch 38 for instructing reheating of the bath water.
39は給湯温度センサ8、給湯流量センサ9、フロ温度センサ18、入水温度センサ31、沸き上げ温度センサ32、貯湯温度センサ33a〜fの検出値が入力され、フロ循環ポンプ15、湯張り開閉弁17、圧縮機22、減圧器24、加熱循環ポンプ27、切換手段30の作動を制御すると共に、リモコン34と通信可能に接続された制御手段である。この制御手段39は、予め給湯装置の作動を制御するためのプログラムが記憶されていると共に、演算、比較、記憶機能、時計機能を有しているものである。   Reference numeral 39 is a hot water supply temperature sensor 8, a hot water supply flow rate sensor 9, a flow temperature sensor 18, an incoming water temperature sensor 31, a boiling temperature sensor 32, and hot water storage temperature sensors 33 a-f. 17 is a control means that controls the operation of the compressor 22, the decompressor 24, the heating circulation pump 27, and the switching means 30 and is communicably connected to the remote controller 34. The control means 39 stores a program for controlling the operation of the hot water supply device in advance, and has a calculation, comparison, storage function, and clock function.
次に、給湯動作について説明すると、給湯栓7が開かれると、貯湯タンク1の底部に給水管2から市水が流入すると共に貯湯タンク1の頂部から出湯管3あるいは中間出湯管19を介して高温の湯が出湯し、制御手段39は給湯温度センサ8で検出する給湯温度がリモコン34の温度設定スイッチ36で設定された給湯設定温度になるよう給湯混合弁5の開度を調整し、給湯栓7から給湯設定温度の湯が給湯され、給湯栓7が閉じられることで給湯動作が終了する。   Next, the hot water supply operation will be described. When the hot water tap 7 is opened, city water flows into the bottom of the hot water storage tank 1 from the water supply pipe 2 and from the top of the hot water storage tank 1 through the hot water discharge pipe 3 or the intermediate hot water discharge pipe 19. The hot water is discharged, and the control means 39 adjusts the opening of the hot water mixing valve 5 so that the hot water temperature detected by the hot water temperature sensor 8 becomes the hot water set temperature set by the temperature setting switch 36 of the remote controller 34. Hot water at a preset hot water supply temperature is supplied from the plug 7 and the hot water supply tap 7 is closed, thereby completing the hot water supply operation.
このとき、貯湯タンク1の中間部の湯温が給湯設定温度よりも高い場合は、中間切替弁20は中間出湯管19側を開いて出湯管3側を閉じるように切り替えられ、貯湯タンク1中間部の湯が貯湯タンク1上部の湯よりも優先して出湯される。また、貯湯タンク1の中間部の湯温が給湯設定温度よりも低い場合は、中間切替弁20は出湯管3側を開いて中間出湯管19側を閉じるように切り替えられ、給湯設定温度の給湯を確実に行うようにしている。   At this time, if the hot water temperature in the intermediate portion of the hot water storage tank 1 is higher than the hot water supply set temperature, the intermediate switching valve 20 is switched to open the intermediate hot water discharge pipe 19 side and close the hot water discharge pipe 3 side. The hot water in the section is discharged in preference to the hot water in the upper part of the hot water storage tank 1. Further, when the hot water temperature in the intermediate portion of the hot water storage tank 1 is lower than the hot water supply set temperature, the intermediate switching valve 20 is switched to open the hot water discharge pipe 3 side and close the intermediate hot water discharge pipe 19 side. Is surely done.
この給湯時には、貯湯タンク1の底部へ流入した水は給水管2の断面積に比べて十分に大きな断面積を持つ貯湯タンク1内で十分に減速され、高温の湯の層をほとんど乱すことなく下方から水の層を形成する。そして、貯湯タンク1上部の高温の湯と貯湯タンク1下部の低温の水とが接する温度境界層Lが形成される。そして、給湯量が増加するにつれて貯湯タンク1上部の高温の湯の層が減少すると共に貯湯タンク1下部の水の層が増加し、温度境界層Lが上昇する。この温度境界層Lは所定の温度差があればそれぞれの温度に基づく比重の違いによって混じり合うことがないもので、時間の経過に伴う熱伝導によって温度境界層Lの厚みが増し徐々に温度勾配が緩くなっていくものである。   During this hot water supply, the water flowing into the bottom of the hot water storage tank 1 is sufficiently decelerated in the hot water storage tank 1 having a sufficiently large cross-sectional area compared to the cross-sectional area of the water supply pipe 2, and hardly disturbs the hot water layer. A layer of water is formed from below. A temperature boundary layer L is formed in which the hot water at the upper part of the hot water storage tank 1 and the low temperature water at the lower part of the hot water storage tank 1 are in contact. As the amount of hot water supply increases, the hot water layer at the upper part of the hot water tank 1 decreases, the water layer at the lower part of the hot water tank 1 increases, and the temperature boundary layer L rises. The temperature boundary layer L does not mix due to the difference in specific gravity based on the respective temperatures if there is a predetermined temperature difference. The thickness of the temperature boundary layer L increases due to heat conduction over time, and the temperature gradient gradually increases. Will become loose.
次に、湯張り動作について説明すると、リモコン34の湯張りスイッチ37が操作されると、制御手段39は湯張り開閉弁17を開いて給湯温度センサ8で検出する給湯温度がリモコン34の温度設定スイッチ36で設定されたフロ設定温度になるように給湯混合弁5の開度を調整して適温の湯を湯張りし、給湯流量センサ9が所望の湯張り流量を積算すると湯張り開閉弁17を閉じて湯張り動作を終了する。   Next, the hot water filling operation will be described. When the hot water filling switch 37 of the remote control 34 is operated, the control means 39 opens the hot water filling on / off valve 17 and the hot water supply temperature detected by the hot water supply temperature sensor 8 is the temperature setting of the remote control 34. When the opening of the hot water supply mixing valve 5 is adjusted so that the flow setting temperature set by the switch 36 is reached, hot water of an appropriate temperature is filled, and when the hot water supply flow rate sensor 9 adds up the desired hot water filling flow rate, the hot water opening / closing valve 17 is filled. To close the hot water filling operation.
そして、湯張り動作が終了してから予め定めた一定時間は、浴槽水の温度をフロ設定温度に保つ保温動作を行う。この保温動作について説明すると、制御手段39は所定のインターバル時間毎にフロ循環ポンプ15を駆動させ、浴槽水をフロ循環回路14に循環させてフロ温度センサ18で浴槽水の温度を検出する。浴槽水の温度がフロ設定温度より低い場合はフロ循環ポンプの駆動を継続し、内熱交換器13から貯湯タンク1内上部の湯の熱を吸熱して浴槽水を加熱する。フロ温度センサ18が検出する温度がフロ設定温度を検出するとフロ循環ポンプ15の駆動を終了し、再度インターバル時間が経過すると同じ動作を繰り返す。そして、予め定めた一定時間が終了するとこの保温動作を終了する。   And the heat retention operation | movement which keeps the temperature of bathtub water at a flow setting temperature for the predetermined fixed time after completion | finish of hot-water filling operation | movement is performed. The heat retaining operation will be described. The control means 39 drives the flow circulation pump 15 at predetermined intervals, circulates the bath water through the flow circulation circuit 14, and detects the temperature of the bath water with the flow temperature sensor 18. When the temperature of the bath water is lower than the flow setting temperature, the flow circulation pump is continuously driven to absorb the heat of the hot water in the hot water storage tank 1 from the internal heat exchanger 13 to heat the bath water. When the temperature detected by the flow temperature sensor 18 detects the flow set temperature, the operation of the flow circulation pump 15 is terminated, and the same operation is repeated when the interval time elapses again. Then, when the predetermined time is finished, the heat retaining operation is finished.
また、リモコン34の追焚きスイッチ38が操作されたときの追焚き動作について説明すると、浴槽水の温度をフロ設定温度+一定温度(例えば2℃)まで追い焚きするように、制御手段39はフロ循環ポンプ15を駆動させ、浴槽水を内熱交換器13へ循環させ、内熱交換器13から貯湯タンク1内上部の湯の熱を吸熱して浴槽水を加熱する。そして、フロ温度センサ18が検出する温度がフロ設定温度+一定温度を検出するとフロ循環ポンプ15の駆動を終了して追焚き動作を終了する。   Further, a description will be given of a chasing operation when the chasing switch 38 of the remote controller 34 is operated. The control means 39 is configured so that the temperature of the bath water is chased to the set flow temperature + a constant temperature (for example, 2 ° C.). The circulation pump 15 is driven, the bathtub water is circulated to the internal heat exchanger 13, and the bathtub water is heated by absorbing the heat of the hot water in the hot water storage tank 1 from the internal heat exchanger 13. When the temperature detected by the flow temperature sensor 18 detects the flow set temperature + the constant temperature, the flow circulation pump 15 is driven to end the chasing operation.
次に、沸き上げ動作について図1〜図3に基づいて説明すると、電力料金単価が安価な所定時間帯である深夜時間帯となると(ステップS1)、制御手段39は、図3の(A)のように中間戻し管28の接続位置よりも上部の貯湯温度センサ33bが所定の温度範囲(ここでは例えば35〜60℃)を検出している場合、貯湯タンク1の中間戻し管28接続位置よりも上に中温水が存在すると判断してステップS2でYesとなり、切換手段30を中間戻し管28側に切り換え(ステップS3)、圧縮機22と減圧器24とを駆動制御してヒートポンプ式加熱手段21と加熱循環ポンプ27を駆動して、沸き上げ温度センサ32で検出する温度が沸き上げ目標温度となるように沸き上げ動作を開始する(ステップS4)。   Next, the boiling operation will be described with reference to FIGS. 1 to 3. When the unit price of the electric power is in a midnight time zone, which is a cheap predetermined time zone (step S <b> 1), the control means 39 performs (A) in FIG. 3. When the hot water storage temperature sensor 33b above the connection position of the intermediate return pipe 28 detects a predetermined temperature range (for example, 35 to 60 ° C.), the connection position of the intermediate return pipe 28 of the hot water storage tank 1 is as follows. In step S2, it is determined that medium-temperature water is present on the top, and the switching means 30 is switched to the intermediate return pipe 28 side (step S3), and the compressor 22 and the decompressor 24 are driven to control the heat pump heating means. 21 and the heating circulation pump 27 are driven, and the boiling operation is started so that the temperature detected by the boiling temperature sensor 32 becomes the boiling target temperature (step S4).
このように、貯湯タンク1中間部から貯湯タンク1内に戻された高温の湯は貯湯タンク1内に残湯として残った中温水の内、中間戻し管28よりも高い位置に存在する中温水を昇温する。この際、ヒートポンプ式加熱手段21には、貯湯タンク1下部の低温水が供給されているため、ヒートポンプ式加熱手段21の加熱効率を良好に保てる。   As described above, the hot water returned from the intermediate portion of the hot water storage tank 1 into the hot water storage tank 1 is the intermediate hot water remaining in the hot water storage tank 1 as the remaining hot water and located at a position higher than the intermediate return pipe 28. Raise the temperature. At this time, since the low-temperature water at the lower part of the hot water storage tank 1 is supplied to the heat pump heating means 21, the heating efficiency of the heat pump heating means 21 can be kept good.
そして、沸き上げ動作を開始してから、図3の(B)のように中間戻し管28の上部の湯が昇温され、中間戻し管28の接続位置よりも上部の貯湯温度センサ33bが所定の温度範囲よりも高い所定温度(ここでは例えば70℃)を検出するとステップS5でYesとなり、切換手段30を貯湯タンク1の上部側へ切り換え(ステップS6)、ヒートポンプ式加熱手段21で沸き上げ目標温度に沸き上げた湯を貯湯タンク1の上部から貯湯タンク1内へ戻すようにして沸き上げ動作を継続する。   Then, after starting the boiling operation, the hot water in the upper part of the intermediate return pipe 28 is heated as shown in FIG. 3B, and the hot water storage temperature sensor 33b above the connection position of the intermediate return pipe 28 is set to a predetermined value. Is detected in step S5, the switching means 30 is switched to the upper side of the hot water storage tank 1 (step S6), and the heat pump type heating means 21 raises the boiling target. The boiling operation is continued by returning the hot water heated to the temperature from the upper part of the hot water storage tank 1 into the hot water storage tank 1.
次に、図3の(C)のように貯湯タンク1の最下部の貯湯温度センサ33fがヒートポンプ式加熱手段21で加熱できる上限温度(例えば50℃)以上を検出するか、あるいは深夜時間帯の終了時刻となると、貯湯タンク1内の湯水の沸き上げが完了したと判断して(ステップS7でYes)、圧縮機22と減圧器24とを駆動停止してヒートポンプ式加熱手段21を停止すると共に加熱循環ポンプ27も停止して、沸き上げ運転を終了する(ステップS8)。   Next, as shown in FIG. 3C, the hot water storage temperature sensor 33f at the bottom of the hot water storage tank 1 detects an upper limit temperature (for example, 50 ° C.) that can be heated by the heat pump heating means 21, or the midnight time zone. When the end time is reached, it is determined that boiling of the hot water in the hot water storage tank 1 has been completed (Yes in step S7), the compressor 22 and the decompressor 24 are stopped and the heat pump heating means 21 is stopped. The heating circulation pump 27 is also stopped and the boiling operation is finished (step S8).
このようにして、貯湯タンク1内に残る再沸き上げ時の沸き上げ効率の悪い中温水をヒートポンプ式加熱手段21で直接沸き上げることなく昇温するので、沸き上げ運転の終了時の中温水の量を少なくすることができ、次の深夜時間帯の開始時刻には図3の(D)のように中温水の量を少なくでき、従来のように前日の中温水がさらに温度低下した状態で残ることがなく、日ごとに中温水の量が増加してしまうことを防止できる。   In this way, the medium-temperature water having low boiling efficiency at the time of re-boiling remaining in the hot water storage tank 1 is heated without being directly boiled by the heat pump heating means 21, so that the medium-temperature water at the end of the boiling operation is heated. The amount can be reduced, and at the start time of the next midnight time zone, the amount of intermediate temperature water can be reduced as shown in FIG. Without remaining, it is possible to prevent the amount of medium-temperature water from increasing every day.
一方、前記ステップS2において、中間戻し管28の接続位置よりも上部の貯湯温度センサ33bが所定の温度範囲(ここでは例えば35〜60℃)よりも高い温度あるいは低い温度を検出している場合、ステップS2でNoとなり、切換手段30を貯湯タンク1の上部側へ切り換え(ステップS9)、圧縮機22と減圧器24とを駆動制御してヒートポンプ式加熱手段21と加熱循環ポンプ27を駆動して、沸き上げ温度センサ32で検出する温度が沸き上げ目標温度となるように沸き上げ動作を開始する(ステップS10)。   On the other hand, in step S2, when the hot water storage temperature sensor 33b above the connection position of the intermediate return pipe 28 detects a temperature higher or lower than a predetermined temperature range (here, for example, 35 to 60 ° C.), No in step S2, the switching means 30 is switched to the upper side of the hot water storage tank 1 (step S9), the compressor 22 and the decompressor 24 are driven and controlled, and the heat pump heating means 21 and the heating circulation pump 27 are driven. The boiling operation is started so that the temperature detected by the boiling temperature sensor 32 becomes the boiling target temperature (step S10).
このように、貯湯タンク1内の中間戻し管28よりも上部に中温水が残っていない場合は、貯湯タンク1の下部から取り出した低温水をヒートポンプ式加熱手段21で沸き上げて、貯湯タンク1の上部から貯湯タンク1内に戻す通常の沸き上げ運転を行い、沸き上げを完了すると(ステップS7でYes)、圧縮機22と減圧器24とを駆動停止してヒートポンプ式加熱手段21を停止すると共に加熱循環ポンプ27も停止して、沸き上げ運転を終了する(ステップS8)。   As described above, when the intermediate temperature water does not remain above the intermediate return pipe 28 in the hot water storage tank 1, the low temperature water taken out from the lower portion of the hot water storage tank 1 is boiled by the heat pump heating means 21, and the hot water storage tank 1. When the normal boiling operation for returning to the hot water storage tank 1 from above is performed and the boiling is completed (Yes in step S7), the compressor 22 and the decompressor 24 are stopped and the heat pump heating means 21 is stopped. At the same time, the heating circulation pump 27 is stopped and the boiling operation is finished (step S8).
このように、貯湯タンク1内に残る再沸き上げ時の沸き上げ効率の悪い中温水をヒートポンプ式加熱手段21で直接沸き上げることなく昇温して中温水の量を減少することができるので、貯湯タンク1の蓄熱可能量の低下を抑制できて湯切れの可能性を低下することができると共に、中温水の再沸き上げによるヒートポンプ式加熱手段21での加熱効率の悪化を招くことがなく、電力使用量を抑えて機器の効率を向上することができる。   Thus, the amount of medium-temperature water can be reduced by raising the temperature of the medium-temperature water having low boiling efficiency at the time of re-boiling remaining in the hot water storage tank 1 without directly boiling it with the heat pump heating means 21. While it is possible to suppress a decrease in the heat storage capacity of the hot water storage tank 1 and to reduce the possibility of running out of hot water, the heating efficiency in the heat pump heating means 21 due to re-boiling of the medium-temperature water is not incurred, It is possible to reduce the amount of power used and improve the efficiency of the device.
なお、本発明は上記した一実施形態に限定されるものではなく、例えば図5に示すように、内熱交換器の代わりに外部流体を加熱するための外熱交換器40を貯湯タンク1の外部に設け、貯湯タンク1の上部から取り出した湯水を外熱交換器40へ循環させて外部流体を加熱し、温度低下した湯水を貯湯タンク1の下部あるいは中間部へ戻す外部循環回路41を設けた構成でもよいものである。   The present invention is not limited to the above-described embodiment. For example, as shown in FIG. 5, an external heat exchanger 40 for heating an external fluid is used instead of the internal heat exchanger. An external circulation circuit 41 that is provided outside and circulates hot water taken out from the upper part of the hot water storage tank 1 to the external heat exchanger 40 to heat the external fluid and returns the hot water whose temperature has decreased to the lower part or intermediate part of the hot water storage tank 1 is provided. The configuration may be different.
1 貯湯タンク
2 給水管
3 出湯管
13 内熱交換器
21 ヒートポンプ式加熱手段
28 中間戻し管
29 沸き上げ管
30 切換手段
33 貯湯温度センサ
39 制御手段
40 外熱交換器
41 外部循環回路
DESCRIPTION OF SYMBOLS 1 Hot water storage tank 2 Water supply pipe 3 Hot water discharge pipe 13 Internal heat exchanger 21 Heat pump type heating means 28 Intermediate return pipe 29 Heating pipe 30 Switching means 33 Hot water storage temperature sensor 39 Control means 40 External heat exchanger 41 External circulation circuit

Claims (5)

  1. 湯水を貯湯する貯湯タンクと、前記貯湯タンク下部に給水するための給水管と、前記貯湯タンク上部から出湯するための出湯管と、前記貯湯タンク下部に接続された取水管と、前記取水管から取り出した湯水を加熱して沸き上げるヒートポンプ式加熱手段と、前記ヒートポンプ式加熱手段で加熱した湯水を前記貯湯タンクの上部に戻す沸き上げ管と、前記沸き上げ管から分岐され前記貯湯タンクの中間部に接続された中間戻し管と、前記沸き上げ管と前記中間戻し管との分岐部に設けられ、前記ヒートポンプ式加熱手段で沸き上げた湯水を前記沸き上げ管を介して前記貯湯タンクの上部に戻すか、前記中間戻し管を介して前記貯湯タンクの中間部に戻すかを切り換える切換手段と、沸き上げ運転開始時に、前記切換手段を前記中間戻し管側に切り換え、前記ヒートポンプ式加熱手段で沸き上げた湯を前記中間戻し管から前記貯湯タンクの中間部に戻し、前記貯湯タンク内の前記中間戻し管よりも上部の湯を昇温した後に、前記切換手段を前記沸き上げ管の前記貯湯タンクの上部側へ切り換え、前記ヒートポンプ式加熱手段で沸き上げた湯を前記貯湯タンクの上部に戻すようにした制御手段とを備えたことを特徴とするヒートポンプ式給湯装置   A hot water storage tank for storing hot water, a water supply pipe for supplying water to the lower part of the hot water storage tank, a hot water discharge pipe for discharging hot water from the upper part of the hot water storage tank, a water intake pipe connected to the lower part of the hot water storage tank, and the water intake pipe Heat pump type heating means for heating and boiling the extracted hot water, a boiling pipe for returning the hot water heated by the heat pump type heating means to the upper part of the hot water storage tank, and an intermediate portion of the hot water storage tank branched from the heating pipe The hot water heated by the heat pump type heating means is provided at the upper part of the hot water storage tank via the hot water pipe. Switching means for switching between returning to the intermediate portion of the hot water storage tank via the intermediate return pipe and the switching means to the intermediate return pipe side when starting the boiling operation The hot water boiled by the heat pump heating means is returned from the intermediate return pipe to the intermediate portion of the hot water storage tank, and the temperature of the hot water above the intermediate return pipe in the hot water storage tank is raised. And a control means for switching the means to the upper side of the hot water storage tank of the heating pipe and returning the hot water heated by the heat pump heating means to the upper part of the hot water storage tank. Water heater
  2. 前記制御手段は、沸き上げ運転開始時に、前記貯湯タンク内の前記中間戻し管よりも上部に所定の温度範囲の中温水が存在する場合に、前記切換手段を前記中間戻し管側に切り換え、前記ヒートポンプ式加熱手段で沸き上げた湯を前記中間戻し管から前記貯湯タンクの中間部に戻し、前記貯湯タンク内の前記中間戻し管よりも上部の湯を前記所定の温度範囲よりも高い温度まで昇温し、一方、沸き上げ運転開始時に、前記貯湯タンク内の前記中間戻し管よりも上部に所定の温度範囲の中温水が存在しない場合、前記切換手段を前記沸き上げ管の前記貯湯タンクの上部側へ切り換え、前記ヒートポンプ式加熱手段で沸き上げた湯を前記貯湯タンクの上部に戻すようにしたことを特徴とする請求項1記載のヒートポンプ式給湯装置。   The control means switches the switching means to the intermediate return pipe side when medium temperature water in a predetermined temperature range is present above the intermediate return pipe in the hot water storage tank at the start of the boiling operation. The hot water boiled by the heat pump heating means is returned from the intermediate return pipe to the intermediate portion of the hot water storage tank, and the hot water above the intermediate return pipe in the hot water storage tank is raised to a temperature higher than the predetermined temperature range. On the other hand, when there is no medium temperature water in a predetermined temperature range above the intermediate return pipe in the hot water storage tank at the start of the boiling operation, the switching means is placed above the hot water storage tank in the boiling pipe. 2. The heat pump type hot water supply apparatus according to claim 1, wherein the hot water boiled by the heat pump type heating means is returned to the upper part of the hot water storage tank.
  3. 前記貯湯タンク内の前記中間戻し管よりも上部に外部流体と熱交換するための内熱交換器を設けたことを特徴とする請求項1または2記載のヒートポンプ式給湯装置。   The heat pump type hot water supply apparatus according to claim 1 or 2, further comprising an internal heat exchanger for exchanging heat with an external fluid above the intermediate return pipe in the hot water storage tank.
  4. 前記貯湯タンク内の湯水と外部流体とを熱交換するための外熱交換器と、前記貯湯タンク上部から取り出した湯水を前記外熱交換器へ循環させ、前記貯湯タンクの下部または中間部へ戻す外部循環回路とを設けたことを特徴とする請求項1または2記載のヒートポンプ式給湯装置。   An external heat exchanger for exchanging heat between hot water in the hot water storage tank and an external fluid, and hot water taken out from the upper part of the hot water storage tank are circulated to the external heat exchanger and returned to the lower part or intermediate part of the hot water storage tank. The heat pump type hot water supply apparatus according to claim 1 or 2, further comprising an external circulation circuit.
  5. 前記ヒートポンプ式加熱手段は、冷媒に二酸化炭素冷媒を用い、高圧側で超臨界となる超臨界ヒートポンプサイクルとしたことを特徴とする請求項1〜4のいずれか一項に記載のヒートポンプ式給湯装置。   The heat pump type hot water supply device according to any one of claims 1 to 4, wherein the heat pump type heating means uses a carbon dioxide refrigerant as a refrigerant and is a supercritical heat pump cycle that becomes supercritical on a high pressure side. .
JP2010001665A 2010-01-07 2010-01-07 Heat pump type water heater Active JP5431175B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010001665A JP5431175B2 (en) 2010-01-07 2010-01-07 Heat pump type water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010001665A JP5431175B2 (en) 2010-01-07 2010-01-07 Heat pump type water heater

Publications (2)

Publication Number Publication Date
JP2011141076A true JP2011141076A (en) 2011-07-21
JP5431175B2 JP5431175B2 (en) 2014-03-05

Family

ID=44457059

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010001665A Active JP5431175B2 (en) 2010-01-07 2010-01-07 Heat pump type water heater

Country Status (1)

Country Link
JP (1) JP5431175B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013210120A (en) * 2012-03-30 2013-10-10 Mitsubishi Electric Corp Storage type hot water supply system
WO2014044864A1 (en) 2012-09-24 2014-03-27 Electricite De France Domestic water heating facility having a heating function
JP2015038397A (en) * 2013-03-25 2015-02-26 リンナイ株式会社 Hot water supply system
WO2016001980A1 (en) * 2014-06-30 2016-01-07 三菱電機株式会社 Heating and hot water supply system
FR3031575A1 (en) * 2015-01-12 2016-07-15 Lacaze Energies THERMAL TRANSFER MODULE WITH ASSOCIATED REGULATION FOR THERMODYNAMIC SYSTEM FOR HOT WATER PRODUCTION

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003207202A (en) * 2002-01-15 2003-07-25 Hitachi Air Conditioning System Co Ltd Heat pump-type hot water supply device
JP2003279136A (en) * 2002-03-19 2003-10-02 Toto Ltd Heat pump water heater
JP2006105460A (en) * 2004-10-04 2006-04-20 Toshiba Electric Appliance Co Ltd Hot water supply device
JP2006308123A (en) * 2005-04-26 2006-11-09 Corona Corp Storage water heater

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003207202A (en) * 2002-01-15 2003-07-25 Hitachi Air Conditioning System Co Ltd Heat pump-type hot water supply device
JP2003279136A (en) * 2002-03-19 2003-10-02 Toto Ltd Heat pump water heater
JP2006105460A (en) * 2004-10-04 2006-04-20 Toshiba Electric Appliance Co Ltd Hot water supply device
JP2006308123A (en) * 2005-04-26 2006-11-09 Corona Corp Storage water heater

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013210120A (en) * 2012-03-30 2013-10-10 Mitsubishi Electric Corp Storage type hot water supply system
WO2014044864A1 (en) 2012-09-24 2014-03-27 Electricite De France Domestic water heating facility having a heating function
JP2015038397A (en) * 2013-03-25 2015-02-26 リンナイ株式会社 Hot water supply system
WO2016001980A1 (en) * 2014-06-30 2016-01-07 三菱電機株式会社 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
FR3031575A1 (en) * 2015-01-12 2016-07-15 Lacaze Energies THERMAL TRANSFER MODULE WITH ASSOCIATED REGULATION FOR THERMODYNAMIC SYSTEM FOR HOT WATER PRODUCTION

Also Published As

Publication number Publication date
JP5431175B2 (en) 2014-03-05

Similar Documents

Publication Publication Date Title
JP5431175B2 (en) Heat pump type water heater
JP2005274132A (en) Hot-water storage type water heating system
JP5427015B2 (en) Hot water storage water heater
JP5203918B2 (en) Hot water storage water heater
JP5385801B2 (en) Heat pump type water heater
JP5964230B2 (en) Hot water storage water heater
JP2012237492A (en) Storage type water heater
JP5416038B2 (en) Bath water heater
JP5179345B2 (en) Hot water storage water heater
JP5567520B2 (en) Heat pump water heater
JP5342429B2 (en) Hot water storage water heater
JP5587026B2 (en) Bath equipment
JP2007132594A (en) Reservoir type hot water supply device
JP2011141069A (en) Bath device
JP2013053832A (en) Storage type hot water supply bath device
JP4955375B2 (en) Hot water storage water heater
JP5468479B2 (en) Heat pump hot water storage system
JP2009264617A (en) Heat pump water heater
JP5706304B2 (en) Hot water storage bath system
JP2010243094A (en) Hot water storage type hot water supply device
JP5706301B2 (en) Heat pump water heater
JP2009103386A (en) Storage water heater
JP2021012003A (en) Storage type water heater
JP5878857B2 (en) Hot water storage bath system
JP2011145067A (en) Heat pump type water heater

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120615

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130726

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130813

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130904

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20131203

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20131204

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 5431175

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250