JP2009299927A - Storage type water heater - Google Patents

Storage type water heater Download PDF

Info

Publication number
JP2009299927A
JP2009299927A JP2008151743A JP2008151743A JP2009299927A JP 2009299927 A JP2009299927 A JP 2009299927A JP 2008151743 A JP2008151743 A JP 2008151743A JP 2008151743 A JP2008151743 A JP 2008151743A JP 2009299927 A JP2009299927 A JP 2009299927A
Authority
JP
Japan
Prior art keywords
hot water
storage tank
water storage
tank
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.)
Pending
Application number
JP2008151743A
Other languages
Japanese (ja)
Inventor
Kentaro Terashi
健太郎 寺師
Toshiyuki Sakuma
利幸 佐久間
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2008151743A priority Critical patent/JP2009299927A/en
Publication of JP2009299927A publication Critical patent/JP2009299927A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage type water heater comprising a reheating function used in an external load system for heating hot water/water of which the temperature is lowered, and replenishing a cistern tank with the water with an inexpensive constitution. <P>SOLUTION: In this storage type water heater 100 in which hot water boiled up by a heat pump unit 1 is stored in a hot water storage tank 20, and heat is exchanged between the hot water taken from the hot water storage tank and flowing in a heat source side circulation pipe conduit 30 and the hot water/water taken from a hot water floor heating system 110 and flowing in a load side circulation pipe conduit 60 by a load-side heat exchanger 35 to reheat the hot water/water, the cistern tank 65 for storing the replenishment water for the hot water floor heating system is disposed in the load-side circulation pipe conduit, and discharging piping 55 is disposed to guide the expanded water generated in the hot water storage tank to the cistern tank through a pressure release valve 50. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、他の設備で用いられて温度低下した湯水を加熱することができる貯湯式給湯機に関する。   The present invention relates to a hot water storage type hot water heater that can be used in other facilities to heat hot water whose temperature has decreased.

熱源機で沸き上げた湯を貯湯タンクに一旦貯留して、該貯湯タンクから給湯管路を介して所望箇所に給湯する貯湯式給湯機では、浴槽や温水暖房設備などの外部負荷設備で用いられて温度低下した湯水を貯湯タンク内の湯を熱源として利用して加熱する再加熱機能を備えたものが開発されている。   Hot water heated by a heat source machine is temporarily stored in a hot water storage tank, and hot water is supplied from the hot water storage tank to a desired location via a hot water supply pipe. It is used in external load equipment such as a bathtub and hot water heating equipment. What has been developed is a reheat function that heats hot and cold water using hot water in a hot water storage tank as a heat source.

例えば、特許文献１には、貯湯タンクと、貯湯タンク内の湯を熱源として用いる熱交換器と、床暖房パネルなどの暖房負荷で用いられる湯水を熱交換器経由で循環させる管路と、該管路に設けられて暖房負荷用の補給水を貯留する補水タンクと、貯湯タンクに給水する給水管からの枝管に設けられて補水タンクへの給水を制御する補水弁と、補水タンク内の水位を検出する水位検出部とを備えた貯湯式給湯機が記載されている。この貯湯式給湯機では、水位検出部によって補水タンクの水位低下が検出されると補水弁が開にされて、給水管から補水タンクに水が補給される。   For example, Patent Document 1 discloses a hot water storage tank, a heat exchanger that uses hot water in the hot water storage tank as a heat source, a pipe that circulates hot water used in a heating load such as a floor heating panel via a heat exchanger, A supplementary water tank that is provided in the pipeline and stores the supplementary water for heating load, a supplementary valve that is provided in a branch pipe from the water supply pipe that supplies water to the hot water storage tank and controls the supply of water to the supplementary water tank, A hot water storage type water heater provided with a water level detection unit for detecting the water level is described. In this hot water storage type hot water supply device, when the water level detection unit detects a decrease in the water level of the water replenishing tank, the water replenishing valve is opened and water is supplied from the water supply pipe to the water replenishing tank.

特開２００７−８５６７１号公報JP 2007-85671 A

特許文献１に記載された貯湯式給湯機では、補水タンクでの貯水量を所定量に保つために水位検出器や補水弁を専用の部品として設けているので、製造コストが嵩む。   In the hot water storage type hot water heater described in Patent Document 1, since a water level detector and a water replenishing valve are provided as dedicated parts in order to keep the amount of water stored in the water replenishing tank at a predetermined amount, the manufacturing cost increases.

本発明は上記の事情に鑑みてなされたものであり、外部負荷設備で用いられて温度低下した湯水を加熱する再加熱機能を備え、低コストな構成で補水タンクに水を補給することができる貯湯式給湯機を得ることを目的とする。   The present invention has been made in view of the above circumstances, and has a reheating function for heating hot water used in an external load facility to lower the temperature, and can supply water to the replenishing tank with a low-cost configuration. The purpose is to obtain a hot water storage water heater.

上記の目的を達成する本発明の貯湯式給湯機は、熱源機で沸き上げた湯を貯留する貯湯タンクと、貯湯タンクの上部から湯を取水し、取水した湯を貯湯タンクの下部に戻す熱源側循環管路と、湯を用いる外部負荷設備から湯水を取水し、取水した湯水を外部負荷設備に戻す負荷側循環管路と、熱源側循環管路を流れる湯と負荷側循環管路を流れる湯水との間で熱交換を行って湯水を加温する熱交換器と、負荷側循環管路に接続されて外部負荷設備用の補給水を貯留する補水タンクと、貯湯タンクの内圧が所定圧に達したときに開弁して貯湯タンクから湯を排出する圧力逃し弁と、圧力逃し弁から排出される湯を補水タンクに導く排出配管と、を備えていることを特徴とする。   The hot water storage type water heater of the present invention that achieves the above object includes a hot water storage tank for storing hot water boiled by a heat source device, and a heat source for taking hot water from the upper part of the hot water storage tank and returning the taken hot water to the lower part of the hot water storage tank. Hot water is taken from the side circulation pipe and the external load equipment that uses hot water, and the hot water that flows into the external load equipment is returned to the external load equipment, and the hot water that flows through the heat source side circulation pipe and the load side circulation pipe flow. A heat exchanger that exchanges heat with hot water to heat the hot water, a supplementary water tank that is connected to the load-side circulation pipe and stores makeup water for external load equipment, and the internal pressure of the hot water tank is a predetermined pressure And a pressure relief valve that opens the valve when the pressure reaches the hot water storage tank and discharges hot water from the hot water storage tank, and a discharge pipe that guides the hot water discharged from the pressure relief valve to the auxiliary water tank.

本発明によれば、外部負荷設備で用いられて温度低下した湯水を加熱する再加熱機能を備え、低コストな構成で補水タンクに水を補給可能な貯湯式給湯機を得ることができる。   ADVANTAGE OF THE INVENTION According to this invention, the hot water storage type hot water supply machine provided with the reheating function which heats the hot water which was used with the external load installation, and fell in temperature, and can supply water to a supplementary water tank with a low-cost structure can be obtained.

以下、本発明の貯湯式給湯機の実施の形態について、図面を参照して詳細に説明する。なお、本発明は下記の実施の形態に限定されるものではない。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a hot water storage type water heater of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to the following embodiment.

図１は、本発明の貯湯式給湯機の一例を示す概略図である。同図に示す貯湯式給湯機１００は、ヒートポンプユニット１、沸上循環管路１０、貯湯タンク２０、熱源側循環管路３０、負荷側熱交換器３５、給水管路４０、給湯管路４５、圧力逃し弁５０、排出配管５５、負荷側循環管路６０、補水タンク６５（以下「シスターンタンク６５」と称す）、および制御装置９０を備えている。また、負荷側循環管路６０に接続される外部負荷設備として、温水で暖められた床からの熱伝導と輻射熱とで部屋を暖房する温水床暖房設備１１０が示されている。以下、貯湯式給湯機１００の各構成要素について説明する。   FIG. 1 is a schematic view showing an example of a hot water storage type hot water supply apparatus of the present invention. The hot water storage type hot water heater 100 shown in the figure includes a heat pump unit 1, a boiling circulation line 10, a hot water storage tank 20, a heat source side circulation line 30, a load side heat exchanger 35, a water supply line 40, a hot water supply line 45, A pressure relief valve 50, a discharge pipe 55, a load-side circulation pipe 60, a supplementary water tank 65 (hereinafter referred to as “systern tank 65”), and a control device 90 are provided. Further, as an external load facility connected to the load-side circulation pipeline 60, a hot water floor heating facility 110 that heats a room by heat conduction and radiant heat from a floor warmed by warm water is shown. Hereinafter, each component of the hot water storage type water heater 100 will be described.

上記のヒートポンプユニット１は、水を湯に沸き上げる熱源機であり、沸上用熱交換器（図示せず）を有し、貯湯タンク２０の下部から沸上循環管路１０に流入した水を沸上用熱交換器により湯に沸き上げる。ヒートポンプユニット１は、例えば二酸化炭素を冷媒として用いて運転される。   The heat pump unit 1 is a heat source device for boiling water into hot water, has a boiling heat exchanger (not shown), and removes water flowing into the boiling circulation pipe 10 from the lower part of the hot water storage tank 20. Boil in hot water with a boiling heat exchanger. The heat pump unit 1 is operated using, for example, carbon dioxide as a refrigerant.

沸上循環管路１０は、貯湯タンク２０の下部から水を取水して貯湯タンク２０の上部から該貯湯タンク２０に沸き上げた湯を戻す循環管路であり、往き管１１、戻り管１２を含んでいる。往き管１１は貯湯タンク２０の下部とヒートポンプユニット１内の沸上用熱交換器（図示せず）とを繋ぎ、戻り管１２は沸上用熱交換器と貯湯タンク２０の上部とを繋ぐ。往き管１１には制御装置９０に有線接続または無線接続された沸上用循環ポンプ（図示せず）が設けられており、該沸上用循環ポンプが制御装置９０からの運転指令を受けて運転することで沸上循環管路１０内の水が循環する。   The boiling circulation line 10 is a circulation line that takes water from the lower part of the hot water storage tank 20 and returns the hot water boiled to the hot water storage tank 20 from the upper part of the hot water storage tank 20. Contains. The forward pipe 11 connects the lower part of the hot water storage tank 20 and a heating heat exchanger (not shown) in the heat pump unit 1, and the return pipe 12 connects the upper heat exchanger for boiling and the upper part of the hot water storage tank 20. The forward pipe 11 is provided with a boiling circulation pump (not shown) that is wired or wirelessly connected to the control device 90. The boiling circulation pump receives an operation command from the control device 90 and operates. By doing so, the water in the boiling circulation line 10 circulates.

貯湯タンク２０は、給水管路４０から供給される水を貯留すると共にヒートポンプユニット１で沸き上げられた湯を貯留するものであり、常に満水状態に保たれる。貯湯式給湯機１００の運転時には、貯湯タンク２０内に温度成層が形成される。貯湯タンク２０の下部には、往き管１１の一端と、給水管路４０の一端とが接続されている。貯湯タンク２０の上部には、戻り管１２の一端と、後述する熱源側循環管路３０の一端と給湯管路４５の一端とが接続されている。   The hot water storage tank 20 stores water supplied from the water supply pipe 40 and stores hot water boiled by the heat pump unit 1, and is always kept in a full water state. During operation of the hot water storage type water heater 100, temperature stratification is formed in the hot water storage tank 20. One end of the forward pipe 11 and one end of the water supply pipe 40 are connected to the lower part of the hot water storage tank 20. One end of the return pipe 12, one end of a heat source side circulation pipe 30, and one end of a hot water supply pipe 45 are connected to the upper part of the hot water storage tank 20.

熱源側循環管路３０は、貯湯タンク２０の上部から湯を取水し、該取水した湯を貯湯タンク２０の下部から貯湯タンク２０に戻す循環管路であり、往き管３１、戻り管３２を含んでいる。往き管３１は貯湯タンク２０の上部と負荷側熱交換器３５とを繋ぎ、戻り管３２は負荷側熱交換器３５と貯湯タンク２０の下部とを繋ぐ。戻り管３２には制御装置９０に有線接続または無線接続された熱源側循環ポンプ３３が設けられている。熱源側循環ポンプ３３が制御装置９０からの運転指令を受けて運転することで熱源側循環管路３０内の湯が循環する。   The heat source side circulation pipe 30 is a circulation pipe that takes hot water from the upper part of the hot water storage tank 20 and returns the taken hot water from the lower part of the hot water storage tank 20 to the hot water storage tank 20, and includes an outgoing pipe 31 and a return pipe 32. It is out. The forward pipe 31 connects the upper part of the hot water storage tank 20 and the load side heat exchanger 35, and the return pipe 32 connects the load side heat exchanger 35 and the lower part of the hot water storage tank 20. The return pipe 32 is provided with a heat source side circulation pump 33 that is wired or wirelessly connected to the control device 90. When the heat source side circulation pump 33 is operated in response to an operation command from the control device 90, the hot water in the heat source side circulation pipe 30 is circulated.

給水管路４０は市水などの水を貯湯タンク２０に供給する管路であり、水圧を所定値以下にする減圧弁（図示せず）を含んでいる。給水管路４０の一端は水道などの水源（図示せず）に接続され、他端は貯湯タンク２０の下部に接続される。貯湯タンク２０には、減圧弁により所定値以下に減圧された水が流入する。   The water supply line 40 is a line for supplying water such as city water to the hot water storage tank 20 and includes a pressure reducing valve (not shown) for reducing the water pressure to a predetermined value or less. One end of the water supply pipe 40 is connected to a water source (not shown) such as water supply, and the other end is connected to the lower part of the hot water storage tank 20. Water that has been decompressed to a predetermined value or less by the decompression valve flows into the hot water storage tank 20.

給湯管路４５は、貯湯タンク２０に貯留された湯を所定の給湯先に供給する管路である。給湯管路４５の一端は貯湯タンク２０の上部に接続され、該給湯管路４５の途中には流量調整弁（図示せず）が設けられている。この流量調整弁は、制御装置９０に有線接続または無線接続されており、給湯運転時に制御装置９０により動作制御されて、給湯管路４５での湯の流量を調整する。   The hot water supply pipe 45 is a pipe that supplies hot water stored in the hot water storage tank 20 to a predetermined hot water supply destination. One end of the hot water supply pipe 45 is connected to the upper part of the hot water storage tank 20, and a flow rate adjusting valve (not shown) is provided in the middle of the hot water supply pipe 45. This flow rate adjusting valve is connected to the control device 90 by wire or wirelessly, and is controlled by the control device 90 during hot water supply operation to adjust the flow rate of hot water in the hot water supply pipe 45.

圧力逃し弁５０は、貯湯タンク内２０への湯の貯留に伴って貯湯タンク２０内の湯水の温度が上昇して膨張水が生じ、該膨張水により貯湯タンク２０の内圧が上昇して所定圧に達したときに開弁して、貯湯タンク２０の内圧が予め定められた圧力になるまで後述する排出配管５５での２次側排出配管５５ｂに、貯湯タンク２０内の湯（体積膨張により内圧上昇の原因となった湯（以下「膨張水」と称す））を排出するための弁である。   As the hot water is stored in the hot water storage tank 20, the pressure relief valve 50 increases the temperature of the hot water in the hot water storage tank 20 to generate expanded water, and the expanded water increases the internal pressure of the hot water storage tank 20 to a predetermined pressure. Until the internal pressure of the hot water storage tank 20 reaches a predetermined pressure, the hot water in the hot water storage tank 20 (internal pressure due to volume expansion) is connected to the secondary discharge pipe 55b of the discharge pipe 55 described later. It is a valve for discharging hot water (hereinafter referred to as “expanded water”) that caused the rise.

圧力逃し弁５０の内部には、圧力逃し弁５０の開閉を行う弁体（図示せず）と、弁体を閉弁側に付勢する弾性体（図示せず）と、圧力逃し弁５０の閉弁時に該弾性体の弾性力により弁体が密着する弁座（図示せず）とを含み構成される。貯湯タンク２０の内圧が上記の所定圧に達していない通常時には、圧力逃し弁５０が閉弁し、貯湯タンク２０の内圧が上記の所定圧に達した時には、弁体が膨張水の圧力により弾性体の弾性力に抗して開弁側に押し動かされて弁座から離隔し、圧力逃し弁５０が開弁する。膨張水が２次側排出配管５５ｂに排出されて貯湯タンク２０の内圧が上記の所定圧を下回ると、弁体が弾性体の弾性力で押し戻されて圧力逃し弁５０が閉弁する。   Inside the pressure relief valve 50, there are a valve body (not shown) for opening and closing the pressure relief valve 50, an elastic body (not shown) for biasing the valve body toward the valve closing side, and the pressure relief valve 50. And a valve seat (not shown) to which the valve body comes into close contact with the elastic force of the elastic body when the valve is closed. When the internal pressure of the hot water storage tank 20 does not reach the predetermined pressure, the pressure relief valve 50 is closed. When the internal pressure of the hot water storage tank 20 reaches the predetermined pressure, the valve body is elasticized by the pressure of the expanded water. The pressure relief valve 50 is opened by being pushed toward the valve opening side against the elastic force of the body and separated from the valve seat. When the expanded water is discharged to the secondary discharge pipe 55b and the internal pressure of the hot water storage tank 20 falls below the predetermined pressure, the valve body is pushed back by the elastic force of the elastic body, and the pressure relief valve 50 is closed.

排出配管５５は、貯湯タンク２０内に生じた膨張水を圧力逃し弁５０を介してシスターンタンク６５に導く管路であり、１次側排出配管５５ａ、２次側排出配管５５ｂを含んでいる。１次側排出配管５５ａは、貯湯タンク２０の上部に接続された給湯管路４５から分岐し、該給湯管路４５と圧力逃し弁５０の１次側とを繋ぐ。これにより、貯湯タンク２０と圧力逃し弁５０とは、給湯管路４５および１次側排出配管５５ａを介して連通する。２次側排出配管５５ｂは、圧力逃し弁５０の２次側から排出される膨張水をシスターンタンク６５に導く。   The discharge pipe 55 is a pipe that guides the expanded water generated in the hot water storage tank 20 to the cistern tank 65 through the pressure relief valve 50, and includes a primary side discharge pipe 55a and a secondary side discharge pipe 55b. The primary side discharge pipe 55 a branches off from the hot water supply pipe 45 connected to the upper part of the hot water storage tank 20, and connects the hot water supply pipe 45 and the primary side of the pressure relief valve 50. Thereby, the hot water storage tank 20 and the pressure relief valve 50 communicate with each other via the hot water supply pipe 45 and the primary side discharge pipe 55a. The secondary side discharge pipe 55 b guides the expansion water discharged from the secondary side of the pressure relief valve 50 to the cistern tank 65.

負荷側循環管路６０は、温水床暖房設備１１０から湯水（水または温水）を取水し、該取水した湯水を温水床暖房設備１１０に戻す循環管路であり、往き管６１、戻り管６２、負荷側循環ポンプ６３を含んでいる。往き管６１は温水床暖房設備１１０の下流側（温水床暖房設備１１０から湯水を取水する側）と負荷側熱交換器３５とを繋ぎ、当該往き管６１の途中に、制御装置９０に有線接続または無線接続された負荷側循環ポンプ６３が設けられている。   The load-side circulation pipe 60 is a circulation pipe that takes hot water (water or hot water) from the hot water floor heating facility 110 and returns the taken hot water to the hot water floor heating equipment 110. A load-side circulation pump 63 is included. The forward pipe 61 connects the downstream side of the hot water floor heating facility 110 (the side from which hot water is drawn from the hot water floor heating equipment 110) and the load side heat exchanger 35, and is wired to the control device 90 in the middle of the forward pipe 61. Alternatively, a load-side circulation pump 63 that is wirelessly connected is provided.

戻り管６２は、負荷側熱交換器３５と温水床暖房設備１１０の上流側（温水床暖房設備１１０に湯水を戻す側）とを繋ぐ管であり、当該戻り管６２の途中に設けられたシスターンタンク６５により、上流側戻り管６２ａと、下流側戻り管６２ｂとに分けられる。上流側戻り管６２ａは負荷側熱交換器３５とシスターンタンク６５の下部とを繋ぎ、下流側戻り管６２ｂはシスターンタンク６５の下部と温水床暖房設備１１０の上流側とを繋ぐ。シスターンタンク６５内に湯水が貯留された状態下で負荷側循環ポンプ６３が制御装置９０からの運転指令を受けて運転することで、負荷側循環管路６０を湯水が循環する。   The return pipe 62 is a pipe that connects the load-side heat exchanger 35 and the upstream side of the hot water floor heating facility 110 (the side that returns hot water to the hot water floor heating facility 110), and a systern provided in the middle of the return pipe 62. The tank 65 is divided into an upstream return pipe 62a and a downstream return pipe 62b. The upstream return pipe 62 a connects the load side heat exchanger 35 and the lower part of the cistern tank 65, and the downstream return pipe 62 b connects the lower part of the cistern tank 65 and the upstream side of the hot water floor heating facility 110. The hot water is circulated through the load-side circulation pipe 60 when the load-side circulation pump 63 is operated in response to an operation command from the control device 90 in a state where hot water is stored in the cistern tank 65.

シスターンタンク６５は、温水床暖房設備１１０用の補給水を貯留するタンクである。シスターンタンク６５内には２次側排出配管５５ｂの流出端が位置しており、貯湯タンク２０から圧力逃し弁５０を介して排出された膨張水がシスターンタンク６５内に流入する。シスターンタンク６５の上部にはオーバーフロー管６６が接続され、シスターンタンク６５の下部には上流側戻り管６２ａと、下流側戻り管６２ｂとが接続されている。   The cistern tank 65 is a tank that stores makeup water for the hot water floor heating facility 110. The outlet end of the secondary discharge pipe 55 b is located in the cistern tank 65, and the expanded water discharged from the hot water storage tank 20 through the pressure relief valve 50 flows into the cistern tank 65. An overflow pipe 66 is connected to the upper part of the cistern tank 65, and an upstream return pipe 62 a and a downstream return pipe 62 b are connected to the lower part of the cistern tank 65.

オーバーフロー管６６は、シスターンタンク６５での貯水量を所定値に規制する管であり、一端がシスターンタンク６５の上部に接続され、他端が排出口（図示せず）に開口している。排出配管５５からシスターンタンク６５に膨張水が過度に供給されたときには、所定値を超えた分の湯水が当該オーバーフロー管６６に流入し、ここから排出口に排出される。   The overflow pipe 66 is a pipe that regulates the amount of water stored in the cistern tank 65 to a predetermined value. One end of the overflow pipe 66 is connected to the upper portion of the cistern tank 65 and the other end is opened to a discharge port (not shown). When the expansion water is excessively supplied from the discharge pipe 55 to the cistern tank 65, the amount of hot water exceeding the predetermined value flows into the overflow pipe 66 and is discharged from the discharge pipe to the discharge port.

制御装置９０は、制御部９１とリモートコントローラ９２とを有しており、制御部９１は、主制御部９１ａと記憶部（図示せず）とを含んでいる。主制御部９１ａは、記憶部に格納された情報やリモートコントローラ９２から使用者により入力された情報ないし指令に基づいて、ヒートポンプユニット１で水を湯に沸き上げて貯湯タンク２０に貯留する沸上運転、貯湯タンク２０に貯留した湯を給湯管路４５を介して所望箇所に給湯する給湯運転、温水床暖房設備１１０から取水した湯水を負荷側熱交換器３５で加熱して温水床暖房設備１１０に戻す温水暖房運転などを制御する。   The control device 90 includes a control unit 91 and a remote controller 92, and the control unit 91 includes a main control unit 91a and a storage unit (not shown). The main control unit 91a boils water into hot water by the heat pump unit 1 and stores it in the hot water storage tank 20 based on information stored in the storage unit or information or instructions input by the user from the remote controller 92. Operation, hot water operation in which hot water stored in the hot water storage tank 20 is supplied to a desired location via the hot water supply pipe 45, hot water taken from the hot water floor heating facility 110 is heated by the load-side heat exchanger 35, and the hot water floor heating facility 110 Control hot water heating operation to return to.

リモートコントローラ９２から入力される情報としては、例えば沸上開始時刻、沸上温度、沸上湯量、給湯温度、温水暖房開始時刻、温水暖房終了時刻などが挙げられ、これらの情報は制御部９１の記憶部に格納される。また、リモートコントローラ９２から入力される指令としては、例えば給湯温度変更、沸上運転中止、沸上湯量変更、温水暖房運転開始、温水暖房運転中止などを指示する指令が挙げられる。   Examples of information input from the remote controller 92 include boiling start time, boiling temperature, boiling water amount, hot water supply temperature, hot water heating start time, hot water heating end time, and the like. Stored in the storage unit. Examples of commands input from the remote controller 92 include commands for instructing a hot water supply temperature change, a boiling operation stop, a boiling water amount change, a hot water heating operation start, a hot water heating operation stop, and the like.

貯湯式給湯機１００を構成する上述の貯湯タンク２０、熱源側循環管路３０、圧力逃し弁５０、排出配管５５、シスターンタンク６５、および制御部９１は、ユニットケースＵＣ内に納められている。沸上循環管路１０、給水管路４０、給湯管路４５、負荷側循環管路６０、オーバーフロー管６６の各々は、その一部がユニットケースＵＣの外部まで延在しており、リモートコントローラ９２は、ユニットケースＵＣの外部、例えば家屋の内部に配置される。   The hot water storage tank 20, the heat source side circulation pipe 30, the pressure relief valve 50, the discharge pipe 55, the cistern tank 65, and the control unit 91 constituting the hot water storage type hot water heater 100 are housed in the unit case UC. A part of each of the boiling circulation line 10, the water supply line 40, the hot water supply line 45, the load side circulation line 60, and the overflow pipe 66 extends to the outside of the unit case UC. Is arranged outside the unit case UC, for example, inside a house.

上述した構成を有する貯湯式給湯機１００は、制御部９１の制御の下に沸上運転、給湯運転、および温水暖房運転を行う。以下、これら沸上運転、給湯運転、および温水暖房運転の各々について説明する。   The hot water storage type hot water heater 100 having the above-described configuration performs a boiling operation, a hot water supply operation, and a hot water heating operation under the control of the control unit 91. Hereinafter, each of the boiling operation, the hot water supply operation, and the hot water heating operation will be described.

沸上運転は、上述した沸上開始時刻になると開始される。沸上運転が開始されると、制御部９１による制御の下にヒートポンプユニット１および沸上用循環ポンプ（図示せず）が起動されて貯湯タンク２０内の水が沸上循環管路１０に流入し、該水がヒートポンプユニット１で所定の沸上温度まで沸き上げられて湯となり、貯湯タンク２０の上部から貯湯タンク２０に戻される。貯湯タンク２０内に所定量の湯が蓄えられると、制御部９１による制御の下にヒートポンプユニット１および沸上用循環ポンプ（図示せず）が停止されて沸上運転が終了する。   The boiling operation is started at the above-described boiling start time. When the boiling operation is started, the heat pump unit 1 and the boiling circulation pump (not shown) are activated under the control of the control unit 91, and the water in the hot water storage tank 20 flows into the boiling circulation line 10. Then, the water is heated up to a predetermined boiling temperature by the heat pump unit 1 to become hot water, and returned to the hot water storage tank 20 from the upper part of the hot water storage tank 20. When a predetermined amount of hot water is stored in the hot water storage tank 20, the heat pump unit 1 and the boiling circulation pump (not shown) are stopped under the control of the control unit 91, and the boiling operation ends.

給湯運転は、給湯管路４５に接続されている給湯栓（図示せず）が開にされると開始される。このとき、給湯管路４５に設けられている流量調節弁（図示せず）の動作が制御部９１により制御されて、給湯先での給湯流量が調節される。   The hot water supply operation is started when a hot water tap (not shown) connected to the hot water supply line 45 is opened. At this time, the operation of a flow rate adjusting valve (not shown) provided in the hot water supply pipe 45 is controlled by the control unit 91 to adjust the hot water supply flow rate at the hot water supply destination.

温水暖房運転は、上述した温水暖房運転開始時刻になったとき、あるいは温水暖房運転開始の指令が使用者によりリモートコントローラ９２から入力されたときに開始され、温水暖房運転終了時刻になったとき、あるいは温水暖房運転中止の指令が使用者によりリモートコントローラ９２から入力されたときに終了する。   The hot water heating operation is started when the above-mentioned hot water heating operation start time is reached, or when a warm water heating operation start command is input from the remote controller 92 by the user, and when the hot water heating operation end time is reached, Alternatively, the process is terminated when an instruction to stop the hot water heating operation is input from the remote controller 92 by the user.

温水暖房運転が開始されると、制御部９１による制御の下に熱源側循環ポンプ３３と負荷側循環ポンプ６３とが起動され、貯湯タンク２０内の湯が熱源側循環管路３０を流れる一方で温水床暖房設備１１０中の湯水が負荷側循環管路６０を流れる。そして、熱源側循環管路３０を流れる湯と負荷側循環管路６０を流れる湯水との間で負荷側熱交換器３５により熱交換が行われて、上記の湯水が再加熱される。   When the hot water heating operation is started, the heat source side circulation pump 33 and the load side circulation pump 63 are activated under the control of the control unit 91, while the hot water in the hot water storage tank 20 flows through the heat source side circulation pipe 30. Hot water in the hot water floor heating facility 110 flows through the load-side circulation line 60. And heat exchange is performed by the load side heat exchanger 35 between the hot water flowing through the heat source side circulation pipe 30 and the hot water flowing through the load side circulation pipe 60, and the hot water is reheated.

結果として、負荷側循環管路６０から温水床暖房設備１１０に湯が流入し、この湯の熱が床に伝導して、床が暖められる。また、暖められた床からの輻射熱により、温水床暖房設備１１０が設置されている部屋が暖められる。温水床暖房設備１１０で熱源として用いられて温度低下した湯は、再び負荷側循環管路６０に流入して負荷側熱交換器３５により再加熱される。なお、負荷側熱交換器３５による上記湯水の加熱温度は、例えば制御部９１が熱源側循環ポンプ３３を制御して熱源側循環管路３０を流れる湯の流量を調整することで、または制御部９１が負荷側循環ポンプ６３を制御して負荷側循環管路６０を流れる湯水の流量を調整することで制御可能である。   As a result, hot water flows from the load-side circulation pipe 60 into the hot water floor heating facility 110, and the heat of this hot water is conducted to the floor, thereby warming the floor. Moreover, the room in which the hot water floor heating equipment 110 is installed is warmed by the radiant heat from the warmed floor. The hot water, which has been used as a heat source in the hot water floor heating facility 110 and whose temperature has dropped, flows into the load side circulation pipe 60 again and is reheated by the load side heat exchanger 35. Note that the heating temperature of the hot water by the load side heat exchanger 35 is adjusted by, for example, the control unit 91 controlling the heat source side circulation pump 33 to adjust the flow rate of hot water flowing through the heat source side circulation pipe 30 or the control unit. 91 can be controlled by controlling the load-side circulation pump 63 and adjusting the flow rate of hot water flowing through the load-side circulation line 60.

上述のようにして沸上運転、給湯運転、および温水暖房運転の各々を行う貯湯式給湯機１００では、沸上げ運転時にシスターンタンク６５への水の補給が自動的に行われる。すなわち、沸上運転に伴って貯湯タンク２０内の湯水の温度が徐々に上昇し、体積膨張を起こして膨張水が生成されて貯湯タンク２０の内圧が上昇し、やがて圧力逃し弁５０が開弁する結果として、矢印Ａで示すように、上記の膨張水が２次側排出配管５５ｂに排出されてシスターンタンク６５に流入する。シスターンタンク６５への水の補給が自動的に行われる。   In the hot water storage type hot water heater 100 that performs each of the boiling operation, the hot water supply operation, and the hot water heating operation as described above, water is automatically supplied to the cistern tank 65 during the boiling operation. That is, the temperature of the hot water in the hot water storage tank 20 gradually rises with the boiling operation, volume expansion occurs to generate expanded water, the internal pressure of the hot water storage tank 20 rises, and the pressure relief valve 50 is eventually opened. As a result, as shown by the arrow A, the expanded water is discharged to the secondary discharge pipe 55b and flows into the cistern tank 65. Water supply to the cistern tank 65 is automatically performed.

膨張水は貯湯タンク内に常時生じるというものではなく、湯の沸上げ時にのみ生じるものであるため、シスターンタンク６５への水の補給を制御することにのみ用いられる専用の弁を用いなくても、シスターンタンク６５に水を補給することができる。したがって、貯湯式給湯機１００の構成は低コストの下に作製し易い構成である。   Since the expanded water does not always occur in the hot water storage tank, but only when the hot water is boiled, it is not necessary to use a dedicated valve that is used only for controlling the supply of water to the cistern tank 65. The cistern tank 65 can be replenished with water. Therefore, the configuration of the hot water storage type hot water heater 100 is a configuration that can be easily manufactured at low cost.

なお、沸上運転時に上述の膨張水がシスターンタンク６５に過度に流入しても、所定容量を超えた分の湯水は矢印Ｂで示すようにオーバーフロー管６６に流入するので、シスターンタンク６５の容積を大きくしなくても膨張水がシスターンタンク６５の周囲に溢れ出てしまうのを容易に防止することができる。この点からも、貯湯式給湯機１００の構成は低コストの下に作製し易いものである。   Even if the above-mentioned expanded water excessively flows into the cistern tank 65 during the boiling operation, the hot water exceeding the predetermined capacity flows into the overflow pipe 66 as shown by the arrow B, so that the volume of the cistern tank 65 is increased. It is possible to easily prevent the expanded water from overflowing around the cistern tank 65 without increasing the size. Also from this point, the configuration of the hot water storage type water heater 100 is easy to manufacture at low cost.

また、貯湯タンク２０内に生じる膨張水の温度は例えば９０℃程度と比較的高温であるので、温水暖房運転を行っている間や温水暖房運転を行う直前に沸上運転を行うと、比較的高温の膨張水がシスターンタンク６５に供給されて負荷側循環管路６０内の湯水が暖められ、負荷側循環管路６０内の湯水の再加熱に要する熱エネルギー量が低減される。   In addition, since the temperature of the expansion water generated in the hot water storage tank 20 is relatively high, for example, about 90 ° C., if the boiling operation is performed during the hot water heating operation or immediately before the hot water heating operation, High-temperature expanded water is supplied to the cistern tank 65 to warm the hot water in the load-side circulation pipe 60, and the amount of thermal energy required for reheating the hot water in the load-side circulation pipe 60 is reduced.

その結果として、温水暖房運転時に熱源側循環管路３０に流す湯の量を少なくしても、上記湯水を所望温度にまで再加熱し易くなる。貯湯タンクを小型化しても、貯湯タンク２０内の湯が不足して給湯運転や温水暖房運転が行えなくなる湯切れを防止し易くなる。さらには、負荷側循環管路６０内の湯水の凍結を防止するための凍結予防運転を上述の温水暖房運転と同様にして行う場合には、温水暖房運転時におけるのと同様に、熱源側循環管路３０に流す湯の量を少なくすることが可能になる。   As a result, even if the amount of hot water flowing through the heat source side circulation conduit 30 during the hot water heating operation is reduced, the hot water can be easily reheated to a desired temperature. Even if the hot water storage tank is reduced in size, it becomes easy to prevent the hot water running out that the hot water supply operation and the hot water heating operation cannot be performed due to insufficient hot water in the hot water storage tank 20. Furthermore, when the freeze prevention operation for preventing freezing of hot water in the load-side circulation pipeline 60 is performed in the same manner as the above-described hot water heating operation, the heat source side circulation is performed as in the hot water heating operation. It is possible to reduce the amount of hot water flowing through the pipeline 30.

以上、本発明の貯湯式給湯機について実施の形態を挙げて説明したが、前述のように、本発明は上述の形態に限定されるものではない。本発明の貯湯式給湯機は、温水床暖房設備などの外部負荷設備で用いられて温度低下した湯水を貯湯タンク内の湯を熱源として利用して加熱する再加熱機能を備え、上記の湯水が循環する負荷側循環管路に補給水貯留用のシスターンタンクが設けられていると共に、貯湯タンクから圧力逃し弁を介して排出される膨張水を排出配管によりシスターンタンクに導くものであれば基本的によく、その構成は適宜変更可能である。例えば熱源機としてヒータを用いることもでき、この場合には当該ヒータが貯湯タンク内に配置される。   As mentioned above, although the hot water storage type hot water heater of the present invention has been described with reference to the embodiment, the present invention is not limited to the above-described form as described above. The hot water storage type hot water heater of the present invention has a reheating function for heating hot water used in an external load facility such as a hot water floor heating facility by using hot water in a hot water storage tank as a heat source. Basically, a cistern tank for replenishing water storage is provided in the circulating load-side circulation pipe and the expansion water discharged from the hot water storage tank through the pressure relief valve is led to the cistern tank by a discharge pipe. In addition, the configuration can be changed as appropriate. For example, a heater can be used as the heat source device, and in this case, the heater is disposed in the hot water storage tank.

また、貯湯タンクで生じた膨張水を圧力逃し弁に導く１次側排出配管は、給湯管路とは別個の配管とすることもできる。この場合、貯湯タンク内に生じた膨張水が給湯管路に流入して給湯先から流出してしまうのを防止するという観点からは、１次側排出配管と貯湯タンクとの接続位置を給湯管路と貯湯タンクとの接続位置よりも高方にすることが好ましい。シスターンタンクにオーバーフロー管を接続することは必須の要件ではなく、オーバーフロー管は省略することも可能である。オーバーフロー管を省略するときには、シスターンタンクから湯水が溢れたときに当該湯水を受けるドレンパンをシスターンタンクの下方に配置することが好ましい。   Moreover, the primary side discharge piping which guide | induces the expansion water produced in the hot water storage tank to a pressure relief valve can also be made into piping different from a hot water supply pipe line. In this case, from the viewpoint of preventing the expansion water generated in the hot water storage tank from flowing into the hot water supply pipe and out of the hot water supply destination, the connection position between the primary side discharge pipe and the hot water storage tank is determined as the hot water supply pipe. It is preferable to be higher than the connection position between the road and the hot water storage tank. It is not an essential requirement to connect an overflow pipe to the cistern tank, and the overflow pipe can be omitted. When the overflow pipe is omitted, it is preferable that a drain pan that receives the hot water when the hot water overflows from the cistern tank is disposed below the cistern tank.

負荷側循環管路に接続される外部負荷設備として温水床暖房設備を例に挙げて説明したが、本発明の貯湯式給湯機に接続される外部負荷設備は湯の温度を利用して所望の機能を発現するものであればよく、例えば床暖房以外の暖房設備であってもよいし融雪設備であってもよい。また、負荷側循環管路を流れる湯水中の塵等を除去するために、負荷側循環管路にストレーナなどの汚れ除去装置を設けてもよい。本発明の貯湯式給湯機については、上述した以外にも種々の変形、修飾、組合せ等が可能である。   Although the hot water floor heating equipment has been described as an example of the external load equipment connected to the load-side circulation pipeline, the external load equipment connected to the hot water storage type hot water heater of the present invention uses a hot water temperature to obtain a desired temperature. What is necessary is just to express a function, for example, heating equipment other than floor heating may be sufficient and snow melting equipment may be sufficient. Further, in order to remove dust in hot water flowing through the load-side circulation pipe, a dirt removing device such as a strainer may be provided in the load-side circulation pipe. The hot water storage type water heater of the present invention can be variously modified, modified, combined, etc. in addition to those described above.

本発明の貯湯式給湯機は、家庭用または業務用の貯湯式給湯機として好適である。   The hot water storage type water heater of the present invention is suitable as a hot water storage type hot water heater for home use or business use.

本発明の貯湯式給湯機の一例を示す概略図である。It is the schematic which shows an example of the hot water storage type water heater of this invention.

符号の説明Explanation of symbols

１ ヒートポンプユニット
１０ 沸上循環管路
１１ 往き管
１２ 戻り管
２０ 貯湯タンク
３０ 熱源側循環管路
３１ 往き管
３２ 戻り管
３３ 熱源側循環ポンプ
３５ 負荷側熱交換器
４０ 給水管路
４５ 給湯管路
５０ 圧力逃し弁
５５ 排出配管
５５ａ １次側排出配管
５５ｂ ２次側排出配管
６０ 負荷側循環管路
６１ 往き管
６２ 戻り管
６２ａ 上流側戻り管
６２ｂ 下流側戻り管
６３ 負荷側循環ポンプ
６５ シスターンタンク
６６ オーバーフロー管
９０ 制御装置
９１ 制御部
９１ａ 主制御部
９２ リモートコントローラ
１００ 貯湯式給湯機
１１０ 温水床暖房設備
ＵＣ ユニットケース DESCRIPTION OF SYMBOLS 1 Heat pump unit 10 Boiling circulation line 11 Outgoing pipe 12 Return pipe 20 Hot water storage tank 30 Heat source side circulation pipe 31 Outward pipe 32 Return pipe 33 Heat source side circulation pump 35 Load side heat exchanger 40 Water supply pipe 45 Hot water supply pipe 50 Pressure relief valve 55 Discharge pipe 55a Primary side discharge pipe 55b Secondary side discharge pipe 60 Load side circulation pipe 61 Forward pipe 62 Return pipe 62a Upstream return pipe 62b Downstream return pipe 63 Load side circulation pump 65 Systurn tank 66 Overflow Pipe 90 Controller 91 Controller 91a Main controller 92 Remote controller 100 Hot water storage hot water heater 110 Hot water floor heating equipment UC Unit case

Claims (2)

熱源機で沸き上げた湯を貯留する貯湯タンクと、
該貯湯タンクの上部から湯を取水し、前記取水した湯を前記貯湯タンクの下部に戻す熱源側循環管路と、
湯を用いる外部負荷設備から湯水を取水し、前記取水した湯水を該外部負荷設備に戻す負荷側循環管路と、
前記熱源側循環管路を流れる湯と前記負荷側循環管路を流れる湯水との間で熱交換を行って前記湯水を加温する熱交換器と、
前記負荷側循環管路に接続されて前記外部負荷設備用の補給水を貯留する補水タンクと、
前記貯湯タンクの内圧が所定圧に達したときに開弁して前記貯湯タンクから湯を排出する圧力逃し弁と、
前記圧力逃し弁から排出される湯を前記補水タンクに導く排出配管と、
を備えていることを特徴とする貯湯式給湯機。 A hot water storage tank for storing hot water boiled by a heat source machine,
A heat source side circulation line for taking hot water from the upper part of the hot water storage tank and returning the taken hot water to the lower part of the hot water storage tank;
A load-side circulation line for taking hot water from an external load facility using hot water and returning the taken hot water to the external load facility;
A heat exchanger that heats the hot water by exchanging heat between the hot water flowing through the heat source side circulation line and the hot water flowing through the load side circulation line;
A replenishment tank connected to the load-side circulation line and storing makeup water for the external load facility;
A pressure relief valve that opens when the internal pressure of the hot water storage tank reaches a predetermined pressure and discharges hot water from the hot water storage tank;
A discharge pipe for guiding hot water discharged from the pressure relief valve to the replenishing tank;
A hot water storage type water heater characterized by comprising. 前記補水タンクの貯水量を所定値に規制するオーバーフロー管を更に備えていることを特徴とする請求項１に記載の貯湯式給湯機。   The hot water storage type hot water supply apparatus according to claim 1, further comprising an overflow pipe that regulates a water storage amount of the supplementary water tank to a predetermined value.
JP2008151743A 2008-06-10 2008-06-10 Storage type water heater Pending JP2009299927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008151743A JP2009299927A (en) 2008-06-10 2008-06-10 Storage type water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008151743A JP2009299927A (en) 2008-06-10 2008-06-10 Storage type water heater

Publications (1)

Publication Number Publication Date
JP2009299927A true JP2009299927A (en) 2009-12-24

Family

ID=41547016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008151743A Pending JP2009299927A (en) 2008-06-10 2008-06-10 Storage type water heater

Country Status (1)

Country Link
JP (1) JP2009299927A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012242012A (en) * 2011-05-20 2012-12-10 Mitsubishi Electric Corp Hot water storage type water heater
CN112344424A (en) * 2020-10-10 2021-02-09 上海中如智慧能源集团有限公司 High-temperature water heating system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012242012A (en) * 2011-05-20 2012-12-10 Mitsubishi Electric Corp Hot water storage type water heater
CN112344424A (en) * 2020-10-10 2021-02-09 上海中如智慧能源集团有限公司 High-temperature water heating system

Similar Documents

Publication Publication Date Title
JP4893070B2 (en) Return hot water recovery method and hot water supply system
JP5793450B2 (en) Heat pump heat source system
JP2007205697A (en) Hot water supply system
JP2009210205A (en) Water heater
JP5268152B2 (en) Hot water storage water heater
JP4933177B2 (en) Water heater
JP5901920B2 (en) Solar heat utilization system
JP5069955B2 (en) Heat pump type water heater
JP2009299927A (en) Storage type water heater
JP5755532B2 (en) Hot water storage system
JP2009276033A (en) Hot water supply apparatus
JP2011094922A (en) Heat pump type water heater
JP5166709B2 (en) Water heater
JP4052200B2 (en) Hot water storage hot water supply system
JP2013050253A (en) Reheating device
JP6043954B2 (en) Heat pump water heater
JP2012042071A (en) Hot-water supply apparatus
JP2005076932A (en) Storage type hot water supply system
JP5028183B2 (en) Water heater
JP2009047377A (en) Water heater
JP5169546B2 (en) Hot water system
JP4887881B2 (en) Water heater
JP6458629B2 (en) Water heater
JP6042186B2 (en) Water heater
JP6192473B2 (en) Bath bathing system