JP2004100997A - Hot-water supply heating system - Google Patents

Hot-water supply heating system Download PDF

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Publication number
JP2004100997A
JP2004100997A JP2002260713A JP2002260713A JP2004100997A JP 2004100997 A JP2004100997 A JP 2004100997A JP 2002260713 A JP2002260713 A JP 2002260713A JP 2002260713 A JP2002260713 A JP 2002260713A JP 2004100997 A JP2004100997 A JP 2004100997A
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Japan
Prior art keywords
heating
hot water
water
heat exchanger
heater
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JP2002260713A
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Japanese (ja)
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JP3944434B2 (en
Inventor
Tsuyoshi Yokomizo
横溝 剛志
Hidekatsu Fujita
藤田 英克
Shinji Kuramoto
蔵本 新治
Mari Miyata
宮田 真理
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Chubu Electric Power Co Inc
Hitachi Appliances Inc
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Chubu Electric Power Co Inc
Hitachi Air Conditioning Systems Co Ltd
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Priority to JP2002260713A priority Critical patent/JP3944434B2/en
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  • Details Of Fluid Heaters (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot-water supply heating system capable of performing heating and/or drying of a bathroom and heating of a floor without using other heat source. <P>SOLUTION: In this hot-water supply heating system in which hot water is supplied into a bathtub 10 from an electric water heating device and which is provided with a heating circuit in which hot water heated in a heat exchanger 41 circulates by a circulation pump 46 between the heat exchanger 41 for heating provided in an upper part in a tank 1 of the electric water heating device and a heating machine 42 provided indoors, an expansion tank 45 is arranged in the heating circuit, a supply water pipe 49 is constituted to take in supply water into the expansion tank 45 by branching from a water supply or hot-water supply pipe of the electric water heating device, and an opening and closing valve 50 opening and closing automatically in accordance with water level in the expansion tank 45 is arranged in the supply water pipe 49. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、給湯暖房システムに関し、特に、浴槽への給湯機能を備えた給湯装置の電気温水器を熱源として利用し、他の熱源を使用することなく、浴室の暖房及び/又は乾燥や床暖房等の暖房を行うことができる給湯暖房システムに関するものである。
【0002】
【従来の技術】
従来、集合住宅や一般の戸建て住宅などにおいて、浴槽内への給湯に温水ボイラーや深夜電気を利用した電気温水器が汎用されており、電気温水器のタンク内に貯湯されている所定温度の温水を、浴槽の給湯口や蛇口から供給するようにし、また、必要に応じて追い焚きを可能とするため、追い焚き用熱交換器をタンク内に配設している。
【0003】
ところで、例えば、浴室内の暖房及び/又は乾燥をする場合、一般には浴槽内への給湯装置の熱源と別にした浴室暖房乾燥機を浴室内に設置している。
この浴室暖房乾燥機としては、浴室暖房乾燥機に内蔵する電気式ヒータにて加熱した空気を送風機にて浴室内に送風するようにした電気ヒータ方式、浴室暖房乾燥機に内蔵する空気熱交換器に、ガス、石油等を燃料としたボイラーによって生成した温水を供給し、浴室内の空気を熱交換器にて加熱するようにしたボイラー温水方式等が採用されている。
【0004】
【発明が解決しようとする課題】
しかしながら、上記従来の浴室暖房乾燥機では、給湯装置の熱源があるにもかかわらずこれとは別個に、浴室暖房乾燥用熱源として新たに電気或いはガスを必要とし、設備費及びランニングコストが高くなるという問題を有していた。
また、ボイラー温水方式においては、暖房能力を大きくとれるが、運転開始直後の温度上昇特性が悪く、運転開始をするには温水が生成されるまでの時間を要し、さらには浴室内の温度制御を行う際、ボイラーの燃焼の運転、停止が繰り返えされるため、燃焼の際のロスが大きいという問題があった。
さらに、電気ヒータ方式においては、電気ヒータによる暖房運転のため、温度上昇特性はボイラー温水方式に比べて良いが、ヒータ容量に限界があるため、暖房能力に限界があり、能力不足になることがあるとともに、電気代がかかり、ボイラー温水方式に比べランニングコストが大きくなるという問題があった。
【0005】
また、床暖房等を行う暖房機においても、同様の問題があった。
【0006】
本発明は、上記従来の浴室暖房乾燥機、床暖房機等の暖房機が有する問題点に鑑み、他の熱源を使用することなく、浴室の暖房及び/又は乾燥や床暖房等の暖房を行うことができるようにした給湯暖房システムを提供することを目的とする。
【0007】
【課題を解決するための手段】
上記目的を達成するため、本発明の給湯暖房システムは、電気温水器より浴槽へ給湯するようにするとともに、前記電気温水器のタンク内の上部に設置した暖房用熱交換器と室内に設置した暖房機間を、前記熱交換器内にて加熱された温水が、循環用ポンプにより循環する暖房用回路を設けた給湯暖房システムにおいて、前記暖房用回路に膨張タンクを配設するとともに、該膨張タンクへの補給水を電気温水器の給水又は給湯配管から分岐して取り入れるように補給水配管を構成し、該補給水配管に膨張タンクの水位に応じて自動的に開閉する開閉弁を配設したことを特徴とする。
【0008】
この給湯暖房システムは、電気温水器のタンク内に暖房用熱交換器を設置し、電気温水器を熱源機として暖房用熱交換器にて生成した温水を、室内に設置した暖房機に供給して暖房機の熱交換器によって暖房(及び/又は乾燥)を行うようにしているから、室内の暖房(及び/又は乾燥)を行うために新たな熱源を必要とせず、設備費及びランニングコストの低廉化を図ることができる。
また、運転開始時においては、タンク内に設置した熱交換機内に、すでに加熱された温水が停滞しているため、短時間で室内に設置した暖房機へ加熱された温水を供給でき、温度上昇特性が優れているとともに、ボイラー温水方式のように燃焼機を必要としないため、室内の温度制御を行う際においても燃焼の運転、停止が繰り返されることによる燃焼の際のロスがなく、暖房能力を大きくとることができる。
また、暖房用回路に配設した膨張タンクによって、温度変化による循環水の体積の膨張、収縮を吸収することができるので、暖房用回路内の水量を一定に保つことができ、暖房用熱交換器と室内に設置した暖房機間で温水を安定して循環させることができる。
さらに、膨張タンクへの補給水を電気温水器の給水又は給湯配管から分岐して取り入れるように補給水配管を構成し、補給水配管に膨張タンクの水位に応じて自動的に開閉する開閉弁を配設するようにしているので、循環水量が減少した場合においても、循環水を補給することができ、メンテナンスの簡易化を図ることができる。
【0009】
この場合において、暖房用熱交換器と浴槽内の湯の追い焚き用熱交換器を、それぞれ巻き径の異なる螺旋状に形成し、電気温水器のタンク内の上部に並列に設置することができる。
【0010】
これにより、電気温水器のタンク内の上部空間を有効に利用することができ、上部ヒータにて電気温水器のタンク内を再加熱する際の加熱湯量を少なくでき、エネルギコストを低減することができる。
【0011】
また、暖房用熱交換器の巻き径を、浴槽内の湯の追い焚き用熱交換器の巻き径より小さく形成し、暖房用熱交換器の外周に浴槽内の湯の追い焚き用熱交換器を配設することができる。
【0012】
これにより、大きな熱量を必要とする浴槽内の湯の追い焚き用熱交換器と、比較的小さな熱量しか必要としない暖房用熱交換器との熱量のバランスを容易にとることができる。
【0013】
さらに、深夜電力時間帯の終了時刻前より暖房機による暖房を行うことで、蓄熱を行うようにすることができる。
【0014】
これにより、安価な深夜電力を用いて、電気温水器と、例えば、床面の構成材料に蓄熱し、効率のよい暖房を実現することができる。
【0015】
【発明の実施の形態】
以下、本発明の給湯暖房システムの実施の形態を図面に基づいて説明する。
【0016】
図1〜図2に、給湯装置の電気温水器を、浴室暖房乾燥用熱源として利用するようにした本発明の給湯暖房システムの第1実施例を示す。
一般に、給湯装置としての電気温水器は、図1に示すように、所要の貯湯容量を有する円筒状のタンク1と、タンク1の上部と下部に設置され、タンク1内の水を設定温度まで加温するための上部ヒータ2及び下部ヒータ3と、また必要に応じて上部ヒータ2の上方に配設され、浴槽10から供給される水をタンク1内に貯留された温水により加温するようにした追い焚き用熱交換器4とを備えている。
【0017】
また、電気温水器のタンク1には、その底部位置に給水管5、上部位置に出湯管6を設けて、給水管5から給水することによりタンク1内の湯を押し上げるようにして、配管6から出湯するようにしている。
なお、給水管5には、減圧逆止弁11及びバキュームブレーカ11aを介して水道管Sが接続されており、自動的或いは手動的に電気温水器のタンクへの給水を可能としている。
【0018】
一方、追い焚き用熱交換器4は、タンク1内の貯湯と効率的に熱交換されるようタンク1の径よりも小径の螺旋状に形成するとともに、この熱交換器4を、タンク1内の中央部に配設するようにして、これにより、タンク1内に貯留された温水の対流と循環が良好に維持され、熱交換器4による熱交換を効率よく、かつ、確実に行うことができるようにする。
また、タンク1の胴部には、その取付位置を上下方向に変えて複数の温度センサ34,35,36を取り付け、この温度センサ34,35,36によって、タンク内温水温度の低下を迅速、かつ、正確に検知することができ、必要に応じて上部ヒータ2及び/又は下部ヒータ3による追加的な加熱を適切に実施することができるようにする。
【0019】
さらに、電気温水器のタンク1には、2本の配管6、9を介して浴槽10に接続し、該2本の配管6、9のうち一方の配管6(以下、「温水側配管6」という。)を介して浴槽10にタンク1の温水を、他方の配管9(以下、「水道水側配管9」という。)を介して浴槽10に水道水を、それぞれ供給するようになっている。
【0020】
温水側配管6は、逃し弁30の配管と分岐した配管61を形成し、この配管61の温水は、熱交換器4の配管8との合流部T2を経て、配管63、64を介して浴槽10に供給されるようにする。
また、水道水側配管9は、減圧逆止弁11の下流で水道管Sから分岐され、この水道水側配管9の水は、熱交換器4の配管7との合流部T1を経て、配管91を介して浴槽10に供給されるようにする。
【0021】
また、温水側配管61の合流部T2の上流側には、ソレノイドバルブ19、流量センサ20及び逆止弁21を備えた制御手段22が設けられるとともに、水道水側配管9の合流部T1の上流側には、同じ構成からなる制御手段23が設けられている。
なお、制御手段23の上流側と下流側には、それぞれ温度センサ31,32が配設されている。
これらの制御手段22、23は、温水側配管6から電気温水器の温水を、水道管Sから水道水を、それぞれ浴槽10に供給するに際し、浴槽10に供給される温水及び水道水の温度に基づいて、電気温水器の温水及び水道水の水量を調節し、浴槽10の湯の温度及び湯量を適正に制御するもので、これにより給湯速度を上げて給湯時間を大幅に短縮することができる。
【0022】
この場合、温水側配管63と水道水側配管91とを、逆止弁25を備えた接続管24により接続し、少なくとも水道水の一部を、電気温水器の温水と共に、温水側配管64を介して浴槽10に供給するようにしている。
これにより、温水側配管64で高温の温水に水道水を混合し、温水の温度を下げることによって、水道水側配管92からの水道水と温度ムラのできにくい状態で浴槽10に給湯することができる。
【0023】
また、前記制御手段22、23は、浴槽10の湯量が設定した量に近づいたとき、浴槽10への水道水の供給を停止し、電気温水器の温水のみを供給するように構成されている。
これにより、浴槽10の底部に滞留している低温の湯を最後に供給した温水の対流により撹拌して、浴槽10内の湯の温度を均一にすることができる。
【0024】
さらに、浴槽10に接続した温水側配管63を合流部T2で熱交換器4の配管8に接続するとともに、水道水側配管91を合流部T1で熱交換器4の配管7に接続し、これにより、熱交換器4に浴槽10内の湯を循環させ、浴槽10内の湯の追い焚きを可能とし、これにより特に、深夜電力を利用する電気温水器を使用する場合には、低コストの深夜電力の利用を促進することができる。
【0025】
そして、本実施例では、熱交換器4から延びる2本の配管7、8をアダプタ33を介して浴槽10に接続しており、これにより、熱交換器4に浴槽10内の湯を循環させ、浴槽10内の湯の追い焚きができるようになっている。
また、熱交換器4の配管7には、その途中に混合弁18を接続し、この混合弁18と配管91の合流部T1との間の配管7に水位センサ12、ストレーナ13、温度センサ14、循環ポンプ15、ソレノイドバルブ16及び逆止弁17がそれぞれ上流側から順に配設されており、水位センサ12と温度センサ14で浴槽10の水位と温度を検出するとともに、循環ポンプ15によって浴槽10内の湯を吸い上げ、熱交換器4に浴槽10内の湯を循環させるようになっている。
【0026】
また、水道水側配管9の制御手段23の上流側で水道水側配管93を分岐するとともに、温水側配管61の制御手段22の上流側で温水側配管62を分岐し、これら分岐した水道水側配管93と温水側配管62とを混合弁26で接続することにより、温度センサ27と流量センサ28を備えた他の配管経路29を形成している。
この配管経路29では、設定された温度に基づいて、電気温水器の温水と水道水の水量を調節し、配管経路29を経て供給される湯の水温を制御することができる。
【0027】
以上、電気温水器を備えた給湯装置の一実施例について説明したが、本発明の給湯装置としては、特にこれに限定されるものではなく、貯湯式の温水タンクであれば利用することができるとともに、さらに本発明においては、貯湯式のタンクに、給湯暖房システムを接続するものである。
【0028】
ところで、この給湯暖房システムにおいては、タンク1内上部に配設した追い焚き用熱交換器4と別個に、独立して配設した暖房用熱交換器(浴室暖房乾燥用熱交換器)41と、浴室内に配設した暖房機(浴室暖房乾燥機)42と、暖房用熱交換器41、暖房機42間を温水が循環するように配管した暖房側配管43,44と、この一方の暖房側配管43に接続された開放型の膨張タンク45及び循環ポンプ46等より構成する。
【0029】
この暖房用熱交換器41は、熱交換器4と同様に螺旋状とし、かつ熱交換器4の径よりも小径とし、これにより熱交換器41を熱交換器4の内周側に、同心的に配設するようにする。
これにより同一のタンク内で、2つの熱交換器4,41で同時に熱交換による水又は温水の加熱を行うようにする。
そして、特に限定されるものではないが、熱交換器4の内周側に暖房用熱交換器41を、それぞれ螺旋状に配設することにより、大きな熱量を必要とする浴槽10内の湯の追い焚き用熱交換器4と、比較的小さな熱量しか必要としない暖房用熱交換器41との熱量のバランスを容易にとることができるものとなる。
ただし、この熱交換器41と熱交換器4との配置関係は、同心的の内外周に配置する実施例に限定されるものではなく、タンク1内の上部と下部の上下位置となるように配設することも可能で、これら2つの熱交換器の構成及び配置は、これに限定されるものではない。
【0030】
また、膨張タンク45には、上限用レベルセンサ47a及び下限用レベルセンサ47bと、オーバフロー管48を備え、水道管Sより分岐した補給水配管49を接続し、補給水配管49に接続した開閉弁(給水電磁弁)50により熱交換器41、暖房機42間を循環する水量が、その温度変化により体積が膨張又は収縮しても、水量が常に一定量となるように膨張タンク45内にて吸収させるとともに、循環水量が減少した場合においても、下限用レベルセンサ47bの検知により開閉弁50にて循環水を補給することができ、これにより、安定して温水が暖房用熱交換器41と暖房機42間を循環するようにすることができる。
なお、暖房機42には制御装置51を備え、この制御装置51にて暖房機42の運転又は運転停止を行うようにする。
また、暖房側配管43,44には点検時等において、配管43,44内の排水を簡易に、確実に行えるように排水コック52,53を備えるとともに、暖房側配管43,44の適宜箇所に、凍結防止用温度センサ54を配設するようにする。
【0031】
次に、この給湯装置の電気温水器を熱源として用いた給湯暖房システムの作用について説明する。
冬季などにおいて、入浴に際し、浴室内を暖房する場合、或いは浴室内の乾燥又は浴室内に干した洗濯物を乾燥する場合、暖房機42を運転して行う。通常は、給湯暖房システムの開閉弁50は閉じられているので、タンク1内に配設された暖房用熱交換器41内の水はタンク1内の湯との熱交換にて加温されており、この状態で循環用ポンプ46を駆動することにより、熱交換器41内で熱交換にて加熱された温水が、熱交換器41と暖房機42との間を、暖房側配管43,44を介して循環することとなる。そして、暖房機42内には熱交換器42aと送風機42bとが配設されているので、暖房機42内で空気は熱交換され、温風となって浴室内へ吹き出され、浴室内の暖房及び/又は乾燥を行うことができる。
【0032】
なお、この場合、暖房用循環水は、熱交換器41内を通過する際、加熱されて、その加熱温度により体積が膨張したり、また反対に循環水の温度が低下することにより体積が収縮したりする。これにより、密閉された暖房側配管43,44内にて、循環水の体積が変化する。この体積の変化時、暖房側配管43に配設された膨張タンク45にて、循環水の体積変化を吸収するようになって、循環配管内においては、常に一定の循環水量が保たれ、これにより安定した循環が行われて、浴室内の暖房及び/又は乾燥を行うものとなる。
【0033】
このように、電気温水器のタンク内に暖房機のシステム配管内の水を加熱するための熱交換器を配設し、該熱交換器にて生成した温水を暖房機に供給して、暖房機内の空気熱交換器によって暖房、乾燥を行う方式のため、特に運転開始時においては、該熱交換機内に、すでに加熱された温水が停滞しているため、短時間で暖房機へ加熱された温水が供給でき、温度上昇特性に優れており、また、ボイラー温水方式のように燃焼機を必要としないため、浴室内の温度制御を行う際においても燃焼の運転、停止が繰り返されることによる燃焼の際のロスがなくなる。
ボイラー温水方式と同様に暖房機に温水を供給する方式のため、電気ヒータ式よりも暖房能力を大きくとれ、ボイラー温水方式と同等の能力を確保することができ、さらに電気ヒータ式、ボイラー温水方式と異なり、深夜電力を使用して蓄えた温水を利用できることから、電気ヒータ式、ボイラー温水方式に比べ、ランニングコストの低減が図られる。
【0034】
図3に、給湯装置の電気温水器を、床暖房用熱源として利用するようにした本発明の給湯暖房システムの第2実施例を示す。
【0035】
この給湯暖房システムにおいては、タンク1内上部に配設した追い焚き用熱交換器4と別個に、独立して配設した暖房用熱交換器(床暖房用熱交換器)41と、居室内に床面内部に敷設した暖房機(床暖房機)42と、暖房用熱交換器41、暖房機42間を温水が循環するように配管した暖房側配管43,44と、この一方の暖房側配管43に接続された開放型の膨張タンク45及び循環ポンプ46等より構成する。
【0036】
そして、この給湯暖房システムにおいては、暖房側配管(戻り側)43から分岐したバイパス配管56を、暖房用熱交換器41からの暖房側配管(往き側)44に配設した混合弁55に接続するようにする。
また、混合弁55を配設した暖房側配管(往き側)44の下流側に、混合弁制御用温度センサ57を、暖房機42の近傍位置の暖房側配管(戻り側)43(又は床面)に床面温度センサ58を、それぞれ配設するようにする。
【0037】
次に、この給湯装置の電気温水器を熱源として用いた給湯暖房システムの作用について説明する。
床暖房運転の開始時は、混合弁55によってバイパス配管56を閉止させることで、電気温水器のタンク1内に配設した暖房用熱交換器41で加熱した高温の温水を、居室内の床面内部に敷設した暖房機42の熱交換器42aに供給し、床面温度が短時間で所定の温度に達するように運転する。
この際、床面温度センサ58によって、暖房側配管(戻り側)43の水温(又は床面の温度)を測定し、水温(又は床面の温度)が設定温度まで上昇した後は、設定温度を維持するように、混合弁55によってバイパス配管56にバイパスさせる水量を調節し、暖房機42の熱交換器42aに供給する温水の温度を制御したり、さらに、必要に応じて、循環ポンプ46の駆動状態(循環ポンプ46の回転数又はON、OFF)を制御する。
ここで、床暖房の使用に際しては、深夜の沸き上げ時間内に床暖房を使用するケースも想定されることから、床暖房を使用している場合においても、電気温水器の沸き上げ終了時刻には、電気温水器のタンク1内に貯留されている湯が確実に沸き上がるように、タンク1内に配設するヒータ2,3の容量は、通常よりも大容量のものを用いることが望ましい。
なお、床面の構成材料が蓄熱材としての機能を奏することから、深夜の沸き上げ時間内に電気温水器の沸き上げ終了時刻を予測し、床暖房の負荷を加味した上で、深夜電力時間帯の終了時刻の数時間前より床暖房を行うことで、安価な深夜電力を用いて、電気温水器のタンク1内と床面の構成材料への蓄熱を行い、効率のよい床暖房を実現することができる。
【0038】
なお、この給湯暖房システムのその他の構成及び作用は、上記第1実施例の給湯暖房システムと同様である。
【0039】
以上、本発明の給湯暖房システムについて、その実施例に基づいて説明したが、本発明は上記実施例に記載した構成に限定されるものではなく、その趣旨を逸脱しない範囲において適宜その構成を変更することができるものであり、また、その適用対象も、上記実施例の浴室暖房乾燥機や床暖房機以外の暖房機を含むものである。
【0040】
【発明の効果】
本発明の給湯暖房システムによれば、電気温水器のタンク内に暖房用熱交換器を設置し、電気温水器を熱源機として暖房用熱交換器にて生成した温水を、室内に設置した暖房機に供給して暖房機の熱交換器によって暖房(及び/又は乾燥)を行うようにしているから、室内の暖房(及び/又は乾燥)を行うために新たな熱源を必要とせず、設備費及びランニングコストの低廉化を図ることができる。
また、運転開始時においては、タンク内に設置した熱交換機内に、すでに加熱された温水が停滞しているため、短時間で室内に設置した暖房機へ加熱された温水を供給でき、温度上昇特性が優れているとともに、ボイラー温水方式のように燃焼機を必要としないため、室内の温度制御を行う際においても燃焼の運転、停止が繰り返されることによる燃焼の際のロスがなく、暖房能力を大きくとることができる。
また、暖房用回路に配設した膨張タンクによって、温度変化による循環水の体積の膨張、収縮を吸収することができるので、暖房用回路内の水量を一定に保つことができ、暖房用熱交換器と室内に設置した暖房機間で温水を安定して循環させることができる。
さらに、膨張タンクへの補給水を電気温水器の給水又は給湯配管から分岐して取り入れるように補給水配管を構成し、補給水配管に膨張タンクの水位に応じて自動的に開閉する開閉弁を配設するようにしているので、循環水量が減少した場合においても、循環水を補給することができ、メンテナンスの簡易化を図ることができる。
【0041】
また、暖房用熱交換器と浴槽内の湯の追い焚き用熱交換器を、それぞれ巻き径の異なる螺旋状に形成し、電気温水器のタンク内の上部に並列に設置することにより、電気温水器のタンク内の上部空間を有効に利用することができ、上部ヒータにて電気温水器のタンク内を再加熱する際の加熱湯量を少なくでき、エネルギコストを低減することができる。
【0042】
また、暖房用熱交換器の巻き径を、浴槽内の湯の追い焚き用熱交換器の巻き径より小さく形成し、暖房用熱交換器の外周に浴槽内の湯の追い焚き用熱交換器を配設することにより、大きな熱量を必要とする浴槽内の湯の追い焚き用熱交換器と、比較的小さな熱量しか必要としない暖房用熱交換器との熱量のバランスを容易にとることができる。
【0043】
さらに、深夜電力時間帯の終了時刻前より暖房機による暖房を行うことで、蓄熱を行うようにすることにより、安価な深夜電力を用いて、電気温水器と、例えば、床面の構成材料に蓄熱し、効率のよい暖房を実現することができる。
【図面の簡単な説明】
【図1】本発明の給湯暖房システムの第1実施例を示す概略構造図である。
【図2】本発明の給湯暖房システムに用いる電気温水器を示し、(A)は断面図、(B)は電気温水器のタンク内に配設された熱交換器の正面図である。
【図3】本発明の給湯暖房システムの第2実施例を示す概略構造図である。
【符号の説明】
1  電気温水器のタンク
2  上部ヒータ
3  下部ヒータ
4  熱交換器
5  給水管
6  温水側配管
7  熱交換器の配管
8  熱交換器の配管
9  水道水側配管
10 浴槽
41 暖房用熱交換器(浴室暖房乾燥用熱交換器、床暖房用熱交換器)
42 暖房機(浴室暖房乾燥機、床暖房機)
43 暖房側配管
44 暖房側配管
45 膨張タンク
46 循環用ポンプ
47a 上限用レベルセンサ
47b 下限用レベルセンサ
48 オーバフロー管
49 補給水配管
50 開閉弁(給水電磁弁)
51 制御装置
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hot water supply / heating system, and in particular, uses an electric water heater of a hot water supply device having a function of supplying hot water to a bathtub as a heat source, and heats and / or dries or heats a bathroom without using another heat source. The present invention relates to a hot water supply / room heating system capable of performing such heating.
[0002]
[Prior art]
Conventionally, in multi-family dwellings and general detached houses, hot water boilers and electric water heaters using late-night electricity have been widely used for hot water supply in bathtubs, and hot water of a predetermined temperature stored in a tank of the electric water heater is used. Is supplied from a hot water supply port or a faucet of a bathtub, and a reheating heat exchanger is provided in the tank in order to enable reheating if necessary.
[0003]
By the way, for example, when heating and / or drying a bathroom, a bathroom heater / dryer is generally installed in the bathroom separately from a heat source of a hot water supply device in the bathtub.
The bathroom heater / dryer is an electric heater system in which air heated by an electric heater built in the bathroom heater / dryer is blown into the bathroom by a blower, and an air heat exchanger built in the bathroom heater / dryer Hot water generated by a boiler using gas, petroleum or the like as a fuel, and a boiler hot water system in which air in a bathroom is heated by a heat exchanger is adopted.
[0004]
[Problems to be solved by the invention]
However, in the above-mentioned conventional bathroom heater / dryer, although there is a heat source of the hot water supply device, separately from this, a new electricity or gas is required as a bathroom heating / drying heat source, and equipment costs and running costs increase. Had the problem that
In addition, in the boiler hot water system, the heating capacity can be increased, but the temperature rise characteristic immediately after the start of operation is poor, and it takes time to generate hot water to start the operation, and furthermore, the temperature control in the bathroom However, since the operation of the boiler is repeatedly started and stopped, there is a problem that the loss during the combustion is large.
Furthermore, in the electric heater system, the temperature rise characteristic is better than that of the boiler hot water system because of the heating operation by the electric heater, but since the heater capacity is limited, the heating capacity is limited and the capacity may be insufficient. In addition, there is a problem that the electricity cost is high and the running cost is higher than that of the boiler hot water system.
[0005]
A similar problem also occurs in a heater for performing floor heating or the like.
[0006]
The present invention, in view of the problems of the above-described conventional heaters such as a bathroom heater / dryer and a floor heater, performs heating and / or drying and / or floor heating without using other heat sources. It is an object of the present invention to provide a hot water supply / heating system that can perform the hot water supply / heating.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the hot water supply / room heating system of the present invention supplies hot water to a bathtub from an electric water heater, and is installed indoors with a heating heat exchanger installed at an upper part in a tank of the electric water heater. In a hot water supply / heating system provided with a heating circuit in which hot water heated in the heat exchanger is circulated by a circulation pump between heaters, an expansion tank is provided in the heating circuit, and the expansion is performed. The makeup water pipe is configured so that the makeup water to the tank is branched off from the water supply or hot water supply pipe of the electric water heater, and an on-off valve that automatically opens and closes according to the water level of the expansion tank is provided in the makeup water pipe. It is characterized by having done.
[0008]
In this hot water supply and heating system, a heating heat exchanger is installed in the tank of the electric water heater, and the hot water generated by the heating heat exchanger using the electric water heater as a heat source device is supplied to the heater installed in the room. Because the heating (and / or drying) is performed by the heat exchanger of the heater, a new heat source is not required for heating (and / or drying) the room, and equipment costs and running costs are reduced. Cost reduction can be achieved.
Also, at the start of operation, the heated hot water is already stagnant in the heat exchanger installed in the tank, so the heated hot water can be supplied to the heater installed indoors in a short time, and the temperature rises. It has excellent characteristics and does not require a combustor unlike the boiler hot water system.Therefore, there is no combustion loss due to repeated combustion operation and stoppage even when performing indoor temperature control, and the heating capacity Can be increased.
In addition, the expansion tank arranged in the heating circuit can absorb the expansion and contraction of the volume of the circulating water due to the temperature change, so that the amount of water in the heating circuit can be kept constant, and the heat exchange for heating can be performed. Hot water can be circulated stably between the vessel and the heater installed in the room.
Furthermore, a makeup water pipe is configured so as to branch and take in makeup water to the expansion tank from the water heater or hot water supply pipe of the electric water heater, and an opening / closing valve that automatically opens and closes the makeup water pipe according to the water level of the expansion tank. Since the circulating water is provided, the circulating water can be replenished even when the amount of circulating water is reduced, so that maintenance can be simplified.
[0009]
In this case, the heat exchanger for heating and the heat exchanger for reheating the hot water in the bathtub are formed in spirals having different winding diameters, respectively, and can be installed in parallel in the upper part in the tank of the electric water heater. .
[0010]
As a result, the upper space in the tank of the electric water heater can be used effectively, and the amount of hot water required for reheating the inside of the tank of the electric water heater with the upper heater can be reduced, thereby reducing energy costs. it can.
[0011]
Also, the winding diameter of the heating heat exchanger is formed smaller than the winding diameter of the heat exchanger for reheating the hot water in the bathtub, and the heat exchanger for reheating the hot water in the bathtub is formed around the outer periphery of the heating heat exchanger. Can be arranged.
[0012]
This makes it possible to easily balance the calorific value of the heat exchanger for reheating the hot water in the bathtub that requires a large amount of heat and the heating heat exchanger that requires only a relatively small amount of heat.
[0013]
Further, by performing heating by the heater before the end time of the midnight power time zone, heat can be stored.
[0014]
As a result, by using inexpensive late-night power, heat is stored in the electric water heater and, for example, the constituent material of the floor surface, and efficient heating can be realized.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a hot water supply / room heating system of the present invention will be described with reference to the drawings.
[0016]
1 and 2 show a first embodiment of a hot water supply / heating system of the present invention in which an electric water heater of a hot water supply device is used as a heat source for bathroom heating / drying.
Generally, as shown in FIG. 1, an electric water heater as a hot water supply device is provided at a cylindrical tank 1 having a required hot water storage capacity, and at an upper portion and a lower portion of the tank 1 to reduce water in the tank 1 to a set temperature. The upper heater 2 and the lower heater 3 for heating, and if necessary, the water supplied from the bathtub 10 and supplied from the bathtub 10 is heated by the warm water stored in the tank 1. And a heat exchanger 4 for reheating.
[0017]
Further, a water supply pipe 5 is provided at a bottom position of the tank 1 of the electric water heater, and a tap water pipe 6 is provided at an upper position thereof, and water is supplied from the water supply pipe 5 so that hot water in the tank 1 is pushed up. It's going to be hot water.
A water pipe S is connected to the water supply pipe 5 via a pressure-reducing check valve 11 and a vacuum breaker 11a, so that water can be automatically or manually supplied to the tank of the electric water heater.
[0018]
On the other hand, the reheating heat exchanger 4 is formed in a spiral shape having a diameter smaller than the diameter of the tank 1 so that heat is efficiently exchanged with the hot water stored in the tank 1. , The convection and circulation of the hot water stored in the tank 1 is maintained well, and the heat exchange by the heat exchanger 4 can be performed efficiently and reliably. It can be so.
A plurality of temperature sensors 34, 35, 36 are attached to the body of the tank 1 by changing its mounting position in the vertical direction, and the temperature sensors 34, 35, 36 quickly lower the temperature of hot water in the tank. In addition, accurate detection can be performed, and additional heating by the upper heater 2 and / or the lower heater 3 can be appropriately performed as necessary.
[0019]
Further, the tank 1 of the electric water heater is connected to a bathtub 10 via two pipes 6 and 9, and one of the two pipes 6 and 9 (hereinafter, “hot water side pipe 6”). ), And the hot water of the tank 1 is supplied to the bathtub 10 via the other pipe 9 (hereinafter, referred to as “tap water side pipe 9”). .
[0020]
The hot water side pipe 6 forms a pipe 61 branched from the pipe of the relief valve 30, and the hot water of the pipe 61 passes through a junction T <b> 2 with the pipe 8 of the heat exchanger 4, and passes through the pipes 63 and 64 through the bathtub. 10 to be supplied.
Further, the tap water side pipe 9 branches off from the water pipe S downstream of the pressure-reducing check valve 11, and the water in the tap water side pipe 9 passes through the junction T 1 with the pipe 7 of the heat exchanger 4, It is supplied to the bathtub 10 via 91.
[0021]
On the upstream side of the junction T2 of the hot water pipe 61, a control means 22 including a solenoid valve 19, a flow sensor 20 and a check valve 21 is provided, and at the upstream of the junction T1 of the tap water pipe 9. On the side, a control means 23 having the same configuration is provided.
In addition, temperature sensors 31 and 32 are disposed on the upstream side and the downstream side of the control means 23, respectively.
When these control means 22 and 23 supply the hot water of the electric water heater from the hot water side pipe 6 and the tap water from the water pipe S to the bathtub 10, respectively, the temperature of the hot water supplied to the bathtub 10 and the temperature of the tap water are controlled. On the basis of this, the amount of hot water and tap water in the electric water heater is adjusted, and the temperature and amount of hot water in the bathtub 10 are appropriately controlled, whereby the hot water supply speed can be increased and the hot water supply time can be greatly reduced. .
[0022]
In this case, the hot water side pipe 63 and the tap water side pipe 91 are connected by the connection pipe 24 having the check valve 25, and at least a part of the tap water is connected to the hot water side pipe 64 together with the hot water of the electric water heater. The water is supplied to the bathtub 10 through the tub 10.
Thus, by mixing the tap water with the high-temperature hot water in the hot water-side pipe 64 and lowering the temperature of the hot water, the hot water can be supplied to the bathtub 10 in a state where the temperature of the tap water from the tap water-side pipe 92 is unlikely to be uneven. it can.
[0023]
The control means 22 and 23 are configured to stop supplying tap water to the bathtub 10 and supply only hot water from the electric water heater when the amount of hot water in the bathtub 10 approaches the set amount. .
Thereby, the low-temperature hot water staying at the bottom of the bathtub 10 is stirred by the convection of the hot water finally supplied, so that the temperature of the hot water in the bathtub 10 can be made uniform.
[0024]
Further, the hot water side pipe 63 connected to the bathtub 10 is connected to the pipe 8 of the heat exchanger 4 at the junction T2, and the tap water side pipe 91 is connected to the pipe 7 of the heat exchanger 4 at the junction T1. Thereby, the hot water in the bathtub 10 can be circulated to the heat exchanger 4 and the hot water in the bathtub 10 can be reheated. This makes it possible to reduce the cost particularly when using an electric water heater that uses midnight power. The use of late-night power can be promoted.
[0025]
In the present embodiment, the two pipes 7 and 8 extending from the heat exchanger 4 are connected to the bathtub 10 via the adapter 33, whereby the hot water in the bathtub 10 is circulated through the heat exchanger 4. In this case, the hot water in the bathtub 10 can be reheated.
A mixing valve 18 is connected to the pipe 7 of the heat exchanger 4 on the way, and a water level sensor 12, a strainer 13, and a temperature sensor 14 are connected to the pipe 7 between the mixing valve 18 and the junction T1 of the pipe 91. , A circulation pump 15, a solenoid valve 16 and a check valve 17 are respectively arranged in order from the upstream side. The water level sensor 12 and the temperature sensor 14 detect the water level and the temperature of the bathtub 10. The hot water inside is sucked up, and the hot water in the bathtub 10 is circulated to the heat exchanger 4.
[0026]
In addition, the tap water pipe 93 is branched upstream of the control means 23 of the tap water pipe 9, and the hot water pipe 62 is branched upstream of the control means 22 of the hot water pipe 61. By connecting the side pipe 93 and the hot water side pipe 62 by the mixing valve 26, another pipe path 29 including the temperature sensor 27 and the flow rate sensor 28 is formed.
In the pipe line 29, the amounts of hot water and tap water in the electric water heater can be adjusted based on the set temperature, and the temperature of the hot water supplied through the pipe line 29 can be controlled.
[0027]
As described above, one embodiment of the hot water supply device provided with the electric water heater has been described. However, the hot water supply device of the present invention is not particularly limited thereto, and any hot water tank of a hot water storage type can be used. Further, in the present invention, a hot water supply / heating system is connected to the hot water storage type tank.
[0028]
By the way, in this hot water supply / heating system, a heating heat exchanger (bathroom heating / drying heat exchanger) 41 is provided separately and separately from the reheating heat exchanger 4 provided in the upper part of the tank 1. A heating device (bathroom heating / drying device) 42 disposed in the bathroom, a heating-side heat exchanger 41, and heating-side piping 43, 44 arranged to circulate hot water between the heating device 42, and one of the heating devices. It is composed of an open type expansion tank 45 and a circulation pump 46 connected to the side pipe 43.
[0029]
The heating heat exchanger 41 has a spiral shape similar to the heat exchanger 4 and has a smaller diameter than the diameter of the heat exchanger 4, so that the heat exchanger 41 is concentric with the inner peripheral side of the heat exchanger 4. It is arranged in a way.
Thereby, in the same tank, the two heat exchangers 4 and 41 simultaneously heat water or hot water by heat exchange.
Although not particularly limited, the heating heat exchangers 41 are spirally disposed on the inner peripheral side of the heat exchanger 4 so that the hot water in the bathtub 10 requiring a large amount of heat is provided. It is possible to easily balance the calorific value of the reheating heat exchanger 4 and the heating heat exchanger 41 that requires only a relatively small calorific value.
However, the arrangement relationship between the heat exchanger 41 and the heat exchanger 4 is not limited to the embodiment in which the heat exchangers are arranged concentrically on the inner and outer circumferences. It is also possible to arrange them, and the configuration and arrangement of these two heat exchangers are not limited to this.
[0030]
The expansion tank 45 is provided with an upper limit level sensor 47a and a lower limit level sensor 47b, and an overflow pipe 48. A make-up water pipe 49 branched from the water pipe S is connected to the expansion tank 45, and an on-off valve connected to the make-up water pipe 49. (Water supply solenoid valve) 50 in the expansion tank 45 so that the amount of water circulating between the heat exchanger 41 and the heater 42 is always constant even if the volume expands or contracts due to the temperature change. In addition to the absorption, even when the amount of circulating water is reduced, the circulating water can be replenished by the on-off valve 50 by the detection of the lower limit level sensor 47b. It is possible to circulate between the heaters 42.
The heater 42 is provided with a control device 51, and the control device 51 operates or stops the operation of the heater 42.
The heating-side pipes 43 and 44 are provided with drain cocks 52 and 53 so that drainage in the pipes 43 and 44 can be performed easily and reliably at the time of inspection or the like. , A freezing prevention temperature sensor 54 is provided.
[0031]
Next, the operation of the hot water supply / room heating system using the electric water heater of the water heater as a heat source will be described.
In the winter season or the like, when heating the bathroom when bathing, or when drying the bathroom or drying the laundry dried in the bathroom, the heater 42 is operated. Normally, since the opening / closing valve 50 of the hot water supply / heating system is closed, the water in the heating heat exchanger 41 provided in the tank 1 is heated by heat exchange with the hot water in the tank 1. By driving the circulation pump 46 in this state, hot water heated by heat exchange in the heat exchanger 41 passes between the heat exchanger 41 and the heater 42 to the heating side pipes 43 and 44. Will be circulated through. Since the heat exchanger 42a and the blower 42b are provided in the heater 42, the heat is exchanged in the heater 42, and the air is blown into the bathroom as warm air, thereby heating the bathroom. And / or drying can be performed.
[0032]
In this case, the circulating water for heating is heated when passing through the heat exchanger 41, and expands in volume due to the heating temperature, and conversely, contracts in volume due to a decrease in the temperature of the circulating water. Or Thereby, the volume of the circulating water changes in the sealed heating-side pipes 43 and 44. When the volume changes, the expansion tank 45 arranged in the heating side pipe 43 absorbs the volume change of the circulating water, so that a constant amount of circulating water is always maintained in the circulating pipe. As a result, stable circulation is performed, and heating and / or drying of the bathroom is performed.
[0033]
As described above, the heat exchanger for heating the water in the system piping of the heater is provided in the tank of the electric water heater, and the hot water generated by the heat exchanger is supplied to the heater to perform heating. Because of the method of heating and drying by the air heat exchanger in the machine, especially at the start of operation, the heated water has already been stagnated in the heat exchanger, so the heater was heated to the heater in a short time. It can supply hot water, has excellent temperature rise characteristics, and does not require a combustor as in the boiler hot water system, so even when performing temperature control in the bathroom, combustion is repeatedly started and stopped. The loss at the time of is eliminated.
As with the boiler hot water system, the system supplies hot water to the heater, so it has a larger heating capacity than the electric heater system, and can maintain the same capacity as the boiler hot water system.Furthermore, the electric heater system and the boiler hot water system Unlike this, since the hot water stored using the midnight power can be used, the running cost can be reduced as compared with the electric heater type and the boiler hot water type.
[0034]
FIG. 3 shows a second embodiment of the hot water supply and heating system of the present invention in which the electric water heater of the hot water supply device is used as a heat source for floor heating.
[0035]
In this hot water supply / room heating system, a heating heat exchanger (floor heating heat exchanger) 41 provided independently and separately from a reheating heat exchanger 4 provided in the upper part of the tank 1 and a living room (Floor heater) 42 laid inside the floor, heating-side pipes 43 and 44 laid out so as to circulate hot water between the heating heat exchanger 41 and the heater 42, and one of these heating sides It comprises an open type expansion tank 45 and a circulation pump 46 connected to the pipe 43.
[0036]
In this hot water supply / room heating system, a bypass pipe 56 branched from the heating-side pipe (return side) 43 is connected to a mixing valve 55 provided on a heating-side pipe (outgoing side) 44 from the heating heat exchanger 41. To do.
A mixing valve control temperature sensor 57 is provided downstream of the heating side pipe (outgoing side) 44 in which the mixing valve 55 is disposed, and a heating side pipe (return side) 43 (or floor surface) near the heater 42. ), The floor surface temperature sensors 58 are respectively arranged.
[0037]
Next, the operation of the hot water supply / room heating system using the electric water heater of the water heater as a heat source will be described.
When the floor heating operation is started, the bypass pipe 56 is closed by the mixing valve 55, so that high-temperature hot water heated by the heating heat exchanger 41 disposed in the tank 1 of the electric water heater is supplied to the floor in the living room. It is supplied to the heat exchanger 42a of the heater 42 laid inside the surface, and is operated so that the floor surface temperature reaches a predetermined temperature in a short time.
At this time, the water temperature (or floor temperature) of the heating side pipe (return side) 43 is measured by the floor surface temperature sensor 58, and after the water temperature (or floor temperature) rises to the set temperature, the set temperature is set. To maintain the temperature of the hot water supplied to the heat exchanger 42a of the heater 42 by controlling the amount of water to be bypassed to the bypass pipe 56 by the mixing valve 55, and further, if necessary, the circulation pump 46. Is controlled (the number of rotations of the circulation pump 46 or ON / OFF).
Here, when using the floor heating, it is assumed that the floor heating is used within the boiling time at midnight. In order to ensure that the hot water stored in the tank 1 of the electric water heater is boiled, it is preferable that the heaters 2 and 3 provided in the tank 1 have a larger capacity than usual.
In addition, since the constituent material of the floor surface functions as a heat storage material, the end time of boiling of the electric water heater is predicted within the boiling time at midnight, and after taking into account the load of floor heating, the power time of midnight is considered. By performing floor heating several hours before the end time of the zone, using inexpensive midnight power, heat is stored in the tank 1 of the electric water heater and the constituent materials of the floor, realizing efficient floor heating. can do.
[0038]
Other configurations and operations of the hot water supply / room heating system are the same as those of the first embodiment.
[0039]
As described above, the hot water supply / room heating system of the present invention has been described based on the embodiment, but the present invention is not limited to the configuration described in the above embodiment, and the configuration may be appropriately changed without departing from the gist of the present invention. It can also be applied to a heater other than the bathroom heater / dryer and the floor heater of the above embodiment.
[0040]
【The invention's effect】
According to the hot water supply and heating system of the present invention, a heating heat exchanger is installed in the tank of the electric water heater, and the hot water generated by the heating heat exchanger using the electric water heater as a heat source device is installed indoors. Since heating (and / or drying) is performed by supplying heat to the heat exchanger and using a heat exchanger of the heater, a new heat source is not required for heating (and / or drying) the room, and equipment costs are reduced. In addition, the running cost can be reduced.
Also, at the start of operation, the heated hot water is already stagnant in the heat exchanger installed in the tank, so the heated hot water can be supplied to the heater installed indoors in a short time, and the temperature rises. It has excellent characteristics and does not require a combustor unlike the boiler hot water system.Therefore, there is no combustion loss due to repeated combustion operation and stoppage even when performing indoor temperature control, and the heating capacity Can be increased.
In addition, the expansion tank arranged in the heating circuit can absorb the expansion and contraction of the volume of the circulating water due to the temperature change, so that the amount of water in the heating circuit can be kept constant, and the heat exchange for heating can be performed. Hot water can be circulated stably between the vessel and the heater installed in the room.
Furthermore, a makeup water pipe is configured so as to branch and take in makeup water to the expansion tank from the water heater or hot water supply pipe of the electric water heater, and an opening / closing valve that automatically opens and closes the makeup water pipe according to the water level of the expansion tank. Since the circulating water is provided, the circulating water can be replenished even when the amount of circulating water is reduced, so that maintenance can be simplified.
[0041]
In addition, the heat exchanger for heating and the heat exchanger for reheating the hot water in the bathtub are each formed in a spiral shape having a different winding diameter, and are installed in parallel in the upper part of the tank of the electric water heater, so that the electric water heater is provided. The upper space in the tank of the water heater can be effectively used, the amount of hot water required when the inside of the tank of the electric water heater is reheated by the upper heater can be reduced, and the energy cost can be reduced.
[0042]
Also, the winding diameter of the heating heat exchanger is formed smaller than the winding diameter of the heat exchanger for reheating the hot water in the bathtub, and the heat exchanger for reheating the hot water in the bathtub is formed around the outer periphery of the heating heat exchanger. By disposing the heat exchanger, it is possible to easily balance the calorific value of the heat exchanger for reheating the hot water in the bathtub, which requires a large amount of heat, and the heat exchanger for heating, which requires only a relatively small amount of heat. it can.
[0043]
Furthermore, by performing heat storage by performing heating by a heater before the end time of the midnight power time zone, by using inexpensive midnight power, the electric water heater and, for example, to the constituent material of the floor surface Heat can be stored and efficient heating can be realized.
[Brief description of the drawings]
FIG. 1 is a schematic structural view showing a first embodiment of a hot water supply / room heating system of the present invention.
FIG. 2 shows an electric water heater used in the hot water supply / heating system of the present invention, wherein (A) is a sectional view and (B) is a front view of a heat exchanger provided in a tank of the electric water heater.
FIG. 3 is a schematic structural view showing a second embodiment of the hot water supply / room heating system of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electric water heater tank 2 Upper heater 3 Lower heater 4 Heat exchanger 5 Water supply pipe 6 Hot water side pipe 7 Heat exchanger pipe 8 Heat exchanger pipe 9 Tap water side pipe 10 Bathtub 41 Heating heat exchanger (bathroom Heat exchanger for heating and drying, heat exchanger for floor heating)
42 heater (bathroom heater / dryer, floor heater)
43 Heating side pipe 44 Heating side pipe 45 Expansion tank 46 Circulation pump 47a Upper limit level sensor 47b Lower limit level sensor 48 Overflow pipe 49 Makeup water pipe 50 Opening / closing valve (water supply solenoid valve)
51 Controller

Claims (4)

電気温水器より浴槽へ給湯するようにするとともに、前記電気温水器のタンク内の上部に設置した暖房用熱交換器と室内に設置した暖房機間を、前記熱交換器内にて加熱された温水が、循環用ポンプにより循環する暖房用回路を設けた給湯暖房システムにおいて、前記暖房用回路に膨張タンクを配設するとともに、該膨張タンクへの補給水を電気温水器の給水又は給湯配管から分岐して取り入れるように補給水配管を構成し、該補給水配管に膨張タンクの水位に応じて自動的に開閉する開閉弁を配設したことを特徴とする給湯暖房システム。The hot water was supplied to the bathtub from the electric water heater, and the space between the heating heat exchanger installed in the upper part of the tank of the electric water heater and the heater installed in the room was heated in the heat exchanger. In a hot water supply / heating system provided with a heating circuit in which hot water is circulated by a circulation pump, an expansion tank is provided in the heating circuit, and supply water to the expansion tank is supplied from a water supply or hot water supply pipe of an electric water heater. A hot water supply / heating system, wherein a makeup water pipe is configured so as to be branched and taken in, and an opening / closing valve that automatically opens and closes in accordance with the water level of the expansion tank is arranged in the makeup water pipe. 暖房用熱交換器と浴槽内の湯の追い焚き用熱交換器を、それぞれ巻き径の異なる螺旋状に形成し、電気温水器のタンク内の上部に並列に設置したことを特徴とする請求項1記載の給湯暖房システム。The heat exchanger for heating and the heat exchanger for reheating the hot water in the bathtub are each formed in a spiral shape having a different winding diameter, and are installed in parallel in an upper part in a tank of the electric water heater. The hot water supply and heating system according to 1. 暖房用熱交換器の巻き径を、浴槽内の湯の追い焚き用熱交換器の巻き径より小さく形成し、暖房用熱交換器の外周に浴槽内の湯の追い焚き用熱交換器を配設したことを特徴とする請求項2記載の給湯暖房システム。The winding diameter of the heat exchanger for heating is formed smaller than the winding diameter of the heat exchanger for reheating the hot water in the bathtub, and the heat exchanger for reheating the hot water in the bathtub is arranged around the heat exchanger for heating. The hot water supply / heating system according to claim 2, wherein the hot water supply / heating system is provided. 深夜電力時間帯の終了時刻前より暖房機による暖房を行うことで、蓄熱を行うようにしたことを特徴とする請求項1、2又は3記載の給湯暖房システム。4. The hot water supply / heating system according to claim 1, wherein the heat storage is performed by performing the heating by the heater before the end time of the midnight power time zone.
JP2002260713A 2002-09-06 2002-09-06 Hot water heating system Expired - Fee Related JP3944434B2 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007085664A (en) * 2005-09-22 2007-04-05 Matsushita Electric Ind Co Ltd Hot water storage type water heater
JP2007085671A (en) * 2005-09-22 2007-04-05 Matsushita Electric Ind Co Ltd Storage hot water type water heater
CN102498350A (en) * 2009-09-16 2012-06-13 以色列·茂兹 Water heating system
JP2014089027A (en) * 2012-10-31 2014-05-15 Gastar Corp Heat source apparatus
CN104180533A (en) * 2014-07-08 2014-12-03 江苏新阪神太阳能有限公司 Solar energy and biomass energy-combined heating device
CN104197312A (en) * 2014-07-08 2014-12-10 江苏新阪神太阳能有限公司 Manufacturing method for solar-energy biomass-energy combined heating supply system
JP2020079675A (en) * 2018-11-13 2020-05-28 三菱電機株式会社 Hot water storage type water heater

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007085664A (en) * 2005-09-22 2007-04-05 Matsushita Electric Ind Co Ltd Hot water storage type water heater
JP2007085671A (en) * 2005-09-22 2007-04-05 Matsushita Electric Ind Co Ltd Storage hot water type water heater
JP4581939B2 (en) * 2005-09-22 2010-11-17 パナソニック株式会社 Hot water storage water heater
CN102498350A (en) * 2009-09-16 2012-06-13 以色列·茂兹 Water heating system
JP2014089027A (en) * 2012-10-31 2014-05-15 Gastar Corp Heat source apparatus
CN104180533A (en) * 2014-07-08 2014-12-03 江苏新阪神太阳能有限公司 Solar energy and biomass energy-combined heating device
CN104197312A (en) * 2014-07-08 2014-12-10 江苏新阪神太阳能有限公司 Manufacturing method for solar-energy biomass-energy combined heating supply system
JP2020079675A (en) * 2018-11-13 2020-05-28 三菱電機株式会社 Hot water storage type water heater
JP7167650B2 (en) 2018-11-13 2022-11-09 三菱電機株式会社 Storage hot water heater

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