JP3944434B2 - Hot water heating system - Google Patents

Hot water heating system Download PDF

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Publication number
JP3944434B2
JP3944434B2 JP2002260713A JP2002260713A JP3944434B2 JP 3944434 B2 JP3944434 B2 JP 3944434B2 JP 2002260713 A JP2002260713 A JP 2002260713A JP 2002260713 A JP2002260713 A JP 2002260713A JP 3944434 B2 JP3944434 B2 JP 3944434B2
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Japan
Prior art keywords
hot water
heating
heat exchanger
heater
water
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JP2002260713A
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JP2004100997A (en
Inventor
剛志 横溝
英克 藤田
新治 蔵本
真理 宮田
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Chubu Electric Power Co Inc
Hitachi Appliances Inc
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Chubu Electric Power Co Inc
Hitachi Appliances Inc
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  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Details Of Fluid Heaters (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

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給湯暖房システムにおいて、暖房用熱交換器と浴槽内の湯の追い焚き用熱交換器を、暖房用熱交換器の巻き径が、浴槽内の湯の追い焚き用熱交換器の巻き径より小さい螺旋状に形成し、暖房用熱交換器と浴槽内の湯の追い焚き用熱交換器の間を通ってタンク内に貯留された温水の対流と循環が維持されるように、電気温水器のタンク内の上部に、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て並列に設置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】
特に、暖房用熱交換器と浴槽内の湯の追い焚き用熱交換器を、暖房用熱交換器の巻き径が、浴槽内の湯の追い焚き用熱交換器の巻き径より小さい螺旋状に形成し、暖房用熱交換器と浴槽内の湯の追い焚き用熱交換器の間を通ってタンク内に貯留された温水の対流と循環が維持されるように、電気温水器のタンク内の上部に、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て並列に設置したことにより、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とともに、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。
【0010】
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。
【0011】
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。
【0012】
【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。
【0013】
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。
【0014】
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。
【0015】
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。
【0016】
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。
【0017】
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。
【0018】
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。
【0019】
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。
【0020】
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。
【0021】
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。
【0022】
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。
【0023】
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。
【0024】
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。
【0025】
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。
【0026】
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。
【0027】
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。
【0028】
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。
【0029】
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。
【0030】
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。
【0031】
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。
【0032】
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。
【0033】
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。
【0034】
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。
【0035】
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。
【0036】
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。
【0037】
【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。
【0038】
特に、暖房用熱交換器と浴槽内の湯の追い焚き用熱交換器を、暖房用熱交換器の巻き径が、浴槽内の湯の追い焚き用熱交換器の巻き径より小さい螺旋状に形成し、暖房用熱交換器と浴槽内の湯の追い焚き用熱交換器の間を通ってタンク内に貯留された温水の対流と循環が維持されるように、電気温水器のタンク内の上部に、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て並列に設置したことにより、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とともに、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。
【0039】
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]
BACKGROUND OF THE INVENTION
The present invention relates to a hot water supply and heating system, and in particular, uses an electric water heater of a hot water supply device having a hot water supply function for a bathtub as a heat source, and heating and / or drying and floor heating of a bathroom without using another heat source. It is related with the hot-water supply heating system which can perform heating, such as.
[0002]
[Prior art]
Conventionally, in residential buildings and general detached houses, hot water boilers and electric water heaters using midnight electricity have been widely used for hot water supply to the bathtub, and hot water of a predetermined temperature stored in the tank of the electric water heater Is supplied from a hot water outlet or a faucet of the bathtub, and a reheating heat exchanger is provided in the tank in order to allow reheating if necessary.
[0003]
By the way, for example, when heating and / or drying in a bathroom, generally a bathroom heating / drying machine is installed in the bathroom separately from the heat source of the hot water supply apparatus in the bathtub.
As this bathroom heating dryer, an electric heater system in which air heated by an electric heater built in the bathroom heating dryer is blown into the bathroom by a blower, an air heat exchanger built in the bathroom heating dryer In addition, a boiler hot water system in which hot water generated by a boiler using gas, oil or the like as fuel is supplied and the air in the bathroom is heated by a heat exchanger is adopted.
[0004]
[Problems to be solved by the invention]
However, in the conventional bathroom heating / drying apparatus, although there is a heat source of the hot water supply device, electricity or gas is newly required as a heat source for bathroom heating / drying, and the facility cost and running cost are increased. Had the problem.
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 until hot water is generated to start the operation. There is a problem in that the loss during combustion is large because the operation and stop of combustion of the boiler are repeated during the combustion.
Furthermore, in the electric heater method, since the heating operation is performed by the electric heater, the temperature rise characteristic may be better than that of the boiler hot water method, but the heater capacity is limited, so the heating capacity is limited and the capacity may be insufficient. In addition, there was a problem that the electricity cost was increased and the running cost was higher than that of the boiler hot water system.
[0005]
In addition, the same problem occurs in a heater that performs floor heating or the like.
[0006]
In view of the problems of the above-described conventional heaters such as a bathroom heater / dryer and a floor heater, the present invention performs heating and / or drying of a bathroom and / or floor heating without using another heat source. It is an object of the present invention to provide a hot water supply and heating system that can be used.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a hot water supply and heating system of the present invention is configured to supply hot water from an electric water heater to a bathtub, and to be installed indoors with a heat exchanger for heating installed in the upper part of the tank of the electric water heater. In a hot water supply and heating system provided with a heating circuit in which hot water heated in the heat exchanger is circulated between the heaters by a circulation pump, an expansion tank is disposed in the heating circuit, and the expansion A makeup water pipe is constructed so that makeup water for the tank is branched from the water supply or hot water supply pipe of the electric water heater, and an open / close valve is automatically installed in the makeup water pipe according to the level of the expansion tank. In the hot water supply and heating system, the heat exchanger for heating and the heat exchanger for reheating the hot water in the tub have a winding diameter of the heat exchanger for heating that is larger than the diameter of the heat exchanger for reheating the hot water in the bathtub. Formed into a small spiral In the upper part of the tank of the electric water heater, the convection and circulation of the hot water stored in the tank is maintained through the space between the heat exchanger for heating and the heat exchanger for reheating hot water in the bathtub. The heat exchanger for reheating hot water in the bathtub is disposed on the outer periphery of the heat exchanger for heating and is installed in parallel .
[0008]
In this hot water supply and heating system, a heating heat exchanger is installed in a tank of an electric water heater, and hot water generated by the heating heat exchanger is supplied to the heating apparatus installed indoors using the electric water heater as a heat source device. Therefore, heating (and / or drying) is performed by the heat exchanger of the heater, so that a new heat source is not required for heating (and / or drying) the room, and the equipment cost and running cost are reduced. Cost reduction can be achieved.
In addition, at the start of operation, the heated water already stagnated in the heat exchanger installed in the tank, so the heated 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, so there is no loss during combustion due to repeated operation and stop of combustion even when performing indoor temperature control, and heating capacity Can be greatly increased.
In addition, the expansion tank disposed in the heating circuit can absorb the expansion and contraction of the volume of circulating water due to temperature changes, so that the amount of water in the heating circuit can be kept constant, and heat exchange for heating The hot water can be circulated stably between the heater and the heater installed indoors.
In addition, a makeup water pipe is constructed so that makeup water for the expansion tank is branched from the water supply or hot water supply pipe of the electric water heater, and an opening / closing valve that automatically opens and closes according to the level of the expansion tank in the makeup water pipe. Since it arrange | positions, even when the amount of circulating water reduces, circulating water can be replenished and simplification of a maintenance can be achieved.
[0009]
In particular, the heat exchanger for heating and the heat exchanger for reheating the hot water in the bathtub are spirally formed so that the winding diameter of the heat exchanger for heating is smaller than that of the heat exchanger for reheating the hot water in the bathtub. Formed in the tank of the electric water heater so that the convection and circulation of the hot water stored in the tank is maintained through the space between the heat exchanger for heating and the heat exchanger for reheating the hot water in the bathtub. By arranging a heat exchanger for reheating the hot water in the bathtub on the outer periphery of the heat exchanger for heating at the top and installing it in parallel, it is possible to effectively use the upper space in the tank of the electric water heater It is possible to reduce the amount of hot water when reheating the inside of an electric water heater tank with the upper heater, reducing the energy cost, and heat exchange for reheating the hot water in the bathtub that requires a large amount of heat. The amount of heat between the heat exchanger and a heat exchanger for heating that requires a relatively small amount of heat. It is possible to take a lance easily.
[0010]
Furthermore, heat storage can be performed by performing heating with the heater before the end time of the midnight power time zone.
[0011]
Thereby, it is possible to store heat in an electric water heater and, for example, a constituent material of a floor surface using inexpensive late-night power, and to realize efficient heating.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a hot water supply and heating system of the present invention will be described with reference to the drawings.
[0013]
1 to 2 show a first embodiment of a hot water supply and heating system according to the present invention in which an electric water heater of a hot water supply device is used as a heat source for drying and heating a bathroom.
In general, as shown in FIG. 1, an electric water heater as a hot water supply device is installed in a cylindrical tank 1 having a required hot water storage capacity, and an upper part and a lower part of the tank 1, and water in the tank 1 is set to a set temperature. An upper heater 2 and a lower heater 3 for heating and, if necessary, above the upper heater 2, the water supplied from the bathtub 10 is heated by the hot water stored in the tank 1. The reheating heat exchanger 4 is provided.
[0014]
In addition, the tank 1 of the electric water heater is provided with a water supply pipe 5 at the bottom position and a hot water discharge pipe 6 at the upper position so that the hot water in the tank 1 is pushed up by supplying water from the water supply pipe 5. I try to get out of the 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, and water supply to the tank of the electric water heater is enabled automatically or manually.
[0015]
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 can be efficiently exchanged with the hot water stored in the tank 1. Therefore, the convection and circulation of the hot water stored in the tank 1 can be maintained well, and the heat exchange by the heat exchanger 4 can be performed efficiently and reliably. It can be so.
In addition, a plurality of temperature sensors 34, 35, 36 are attached to the body of the tank 1 by changing the mounting position in the vertical direction. With these temperature sensors 34, 35, 36, the temperature of the hot water in the tank can be quickly reduced. And it can detect correctly and it enables it to perform appropriately the additional heating by the upper heater 2 and / or the lower heater 3 as needed.
[0016]
Further, the tank 1 of the electric water heater is connected to the bathtub 10 via two pipes 6 and 9, and one of the two pipes 6 and 9 (hereinafter referred to as “hot water side pipe 6”). The hot water of the tank 1 is supplied to the bathtub 10 via the other pipe 9 and the tap water is supplied to the bathtub 10 via the other pipe 9 (hereinafter referred to as “tap water side pipe 9”). .
[0017]
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 the junction T <b> 2 with the pipe 8 of the heat exchanger 4 and passes through the pipes 63 and 64. 10 to be supplied.
Further, the tap water side pipe 9 is branched from the water pipe S downstream of the pressure reducing check valve 11, and the water of the tap water side pipe 9 passes through the junction T <b> 1 with the pipe 7 of the heat exchanger 4, and then the pipe It is made to supply to the bathtub 10 through 91.
[0018]
A control means 22 including a solenoid valve 19, a flow rate sensor 20 and a check valve 21 is provided on the upstream side of the junction T <b> 2 of the hot water side pipe 61, and upstream of the junction T <b> 1 of the tap water side 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 unit 23, respectively.
When these control means 22 and 23 supply the hot water of an electric water heater from the hot water side piping 6 and the tap water from the water pipe S to the bathtub 10, respectively, the temperature of the hot water and the tap water supplied to the bathtub 10 is adjusted. Based on this, the amount of hot water in the electric water heater and the amount of tap water are adjusted, and the temperature and amount of hot water in the bathtub 10 are appropriately controlled, thereby increasing the hot water supply speed and greatly reducing the hot water supply time. .
[0019]
In this case, the hot water side pipe 63 and the tap water side pipe 91 are connected by the connecting pipe 24 provided with 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. It supplies to the bathtub 10 via.
Thus, hot water can be supplied to the bathtub 10 in a state where it is difficult to cause temperature unevenness with the tap water from the tap water side pipe 92 by mixing the hot water with the hot water at the hot water side pipe 64 and lowering the temperature of the hot water. it can.
[0020]
Moreover, the said control means 22 and 23 are comprised so that supply of the tap water to the bathtub 10 may be stopped and only the hot water of an electric water heater may be supplied, when the amount of hot water of the bathtub 10 approaches the set amount. .
Thereby, the hot water staying at the bottom of the bathtub 10 is stirred by the convection of the hot water supplied last, and the temperature of the hot water in the bathtub 10 can be made uniform.
[0021]
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. Thus, the hot water in the bathtub 10 is circulated through the heat exchanger 4 to allow the hot water in the bathtub 10 to be replenished. This makes it possible to reduce the cost, particularly when using an electric water heater that uses midnight power. Use of midnight power can be promoted.
[0022]
In this embodiment, the two pipes 7 and 8 extending from the heat exchanger 4 are connected to the bathtub 10 via the adapter 33, thereby circulating hot water in the bathtub 10 to the heat exchanger 4. The hot water in the bathtub 10 can be reheated.
In addition, a mixing valve 18 is connected to the pipe 7 of the heat exchanger 4 in the middle thereof, 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 T 1 of the pipe 91. The circulation pump 15, the solenoid valve 16, and the check valve 17 are sequentially arranged from the upstream side, and the water level sensor 12 and the temperature sensor 14 detect the water level and temperature of the bathtub 10, and the circulation pump 15 causes the bathtub 10 to be detected. The hot water in the bath is sucked up and the hot water in the bathtub 10 is circulated through the heat exchanger 4.
[0023]
Further, the tap water side pipe 93 is branched upstream of the control means 23 of the tap water side pipe 9, and the hot water side pipe 62 is branched upstream of the control means 22 of the hot water side pipe 61. By connecting the side pipe 93 and the hot water side pipe 62 with the mixing valve 26, another pipe path 29 including the temperature sensor 27 and the flow rate sensor 28 is formed.
In this piping path 29, the amount of hot water supplied from the electric water heater and tap water can be adjusted based on the set temperature, and the temperature of hot water supplied via the piping path 29 can be controlled.
[0024]
As mentioned above, although one Example of the hot water supply apparatus provided with the electric water heater was described, as a hot water supply apparatus of this invention, it is not specifically limited to this, If it is a hot water storage type hot water tank, it can utilize. In addition, in the present invention, a hot water supply / heating system is connected to a hot water storage tank.
[0025]
By the way, in this hot water supply and heating system, a heating heat exchanger (bathroom heating and drying heat exchanger) 41 provided separately and separately from the reheating heat exchanger 4 provided in the upper part of the tank 1; , A heater (bathroom heater / dryer) 42 disposed in the bathroom, a heating heat exchanger 41, heating side pipes 43 and 44 in which hot water is circulated between the heaters 42, and heating of this one An open expansion tank 45 connected to the side pipe 43, a circulation pump 46, and the like are included.
[0026]
The heating heat exchanger 41 has a spiral shape like the heat exchanger 4 and has a diameter smaller than the diameter of the heat exchanger 4, whereby the heat exchanger 41 is concentrically arranged on the inner peripheral side of the heat exchanger 4. To be arranged.
As a result, in the same tank, the two heat exchangers 4 and 41 simultaneously heat water or hot water by heat exchange.
And although it does not specifically limit, the heat exchanger 41 for heating is each arrange | positioned spirally at the inner peripheral side of the heat exchanger 4, and the hot water in the bathtub 10 which requires big calorie | heat amount is arrange | positioned. It becomes possible to easily balance the heat amount of the reheating heat exchanger 4 and the heating heat exchanger 41 that requires a relatively small amount of heat.
However, the arrangement relationship between the heat exchanger 41 and the heat exchanger 4 is not limited to the embodiment in which the heat exchanger 41 and the heat exchanger 4 are arranged on concentric inner and outer circumferences. The arrangement and arrangement of these two heat exchangers are not limited to this.
[0027]
Further, the expansion tank 45 includes an upper limit level sensor 47 a and a lower limit level sensor 47 b and an overflow pipe 48. A supply water pipe 49 branched from the water pipe S is connected thereto, and an on-off valve connected to the supply 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. Even when the amount of circulating water is reduced, circulating water can be replenished by the on-off valve 50 by the detection of the lower limit level sensor 47b, so that the hot water is stably supplied to the heating heat exchanger 41. It is possible to circulate between the heaters 42.
In addition, the heater 42 is provided with a control device 51, and the control device 51 operates or stops the operation of the heater 42.
In addition, 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 easily and reliably performed at the time of inspection or the like. A temperature sensor 54 for preventing freezing is provided.
[0028]
Next, the operation of the hot water supply and heating system using the electric water heater of this hot water supply apparatus as a heat source will be described.
In the winter season, when the inside of the bathroom is heated at the time of bathing, or when drying in the bathroom or laundry dried in the bathroom is performed, the heater 42 is operated. Normally, since the on-off 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. In this state, by driving the circulation pump 46, the hot water heated by heat exchange in the heat exchanger 41 passes between the heat exchanger 41 and the heater 42, and the heating side pipes 43 and 44 are connected. It will circulate through. And since the heat exchanger 42a and the air blower 42b are arrange | positioned in the heater 42, air is heat-exchanged in the heater 42, it blows out into a bathroom as a warm air, and heating in a bathroom And / or drying can be performed.
[0029]
In this case, the circulating water for heating is heated when passing through the heat exchanger 41, and the volume expands due to the heating temperature, or conversely, the volume shrinks due to the temperature of the circulating water decreasing. To do. Thereby, the volume of circulating water changes in the sealed heating side pipes 43 and 44. When the volume changes, the expansion tank 45 disposed in the heating side pipe 43 absorbs the volume change of the circulating water, and a constant amount of circulating water is always maintained in the circulation pipe. Therefore, stable circulation is performed, and heating and / or drying in the bathroom is performed.
[0030]
Thus, the heat exchanger for heating the water in the system piping of the heater is disposed in the tank of the electric water heater, and the hot water generated by the heat exchanger is supplied to the heater to heat the heater. Because the system heats and dries with the air heat exchanger in the machine, especially at the start of operation, the heated water has already stagnated in the heat exchanger, so it 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 unlike the boiler hot water system, so combustion is performed by repeatedly starting and stopping combustion even when controlling the temperature in the bathroom. Loss in the case of.
As with the boiler hot water system, it is a system that supplies hot water to the heater, so it can have a larger heating capacity than the electric heater type, and it can secure the same capacity as the boiler hot water system. In addition, the electric heater type and boiler hot water system Unlike the electric heater type and the boiler hot water method, the running cost can be reduced because the hot water stored using midnight power can be used.
[0031]
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 apparatus is used as a heat source for floor heating.
[0032]
In this hot water supply and heating system, a heating heat exchanger (floor heating heat exchanger) 41 provided separately and separately from the reheating heat exchanger 4 provided in the upper part of the tank 1, and a living room A heater (floor heater) 42 laid inside the floor, a heat exchanger 41 for heating, and heating side pipes 43 and 44 in which hot water is circulated between the heaters 42, and one of the heating sides An open-type expansion tank 45 connected to the pipe 43, a circulation pump 46, and the like are included.
[0033]
In this hot water supply and heating system, the bypass pipe 56 branched from the heating side pipe (return side) 43 is connected to the mixing valve 55 provided in the heating side pipe (outward side) 44 from the heating heat exchanger 41. To do.
Further, on the downstream side of the heating side pipe (outward side) 44 in which the mixing valve 55 is disposed, a mixing valve control temperature sensor 57 is connected to the heating side pipe (return side) 43 (or floor surface) in the vicinity of the heater 42. ) Is provided with a floor surface temperature sensor 58.
[0034]
Next, the operation of the hot water supply and heating system using the electric water heater of this hot water supply apparatus as a heat source will be described.
At the start of the floor heating operation, the bypass pipe 56 is closed by the mixing valve 55 so that the hot water heated by the heating heat exchanger 41 disposed in the tank 1 of the electric water heater is heated in the floor of the living room. It supplies to the heat exchanger 42a of the heater 42 laid inside the surface and operates so that the floor surface temperature reaches a predetermined temperature in a short time.
At this time, the floor surface temperature sensor 58 measures the water temperature (or floor surface temperature) of the heating side pipe (return side) 43, and after the water temperature (or floor surface temperature) rises to the set temperature, the set temperature is reached. The amount of water to be bypassed to the bypass pipe 56 by the mixing valve 55 is adjusted so as to maintain the temperature, the temperature of the hot water supplied to the heat exchanger 42a of the heater 42 is controlled, and, if necessary, the circulation pump 46 The driving state (the rotational speed of the circulation pump 46 or ON, OFF) is controlled.
Here, when using floor heating, it is assumed that floor heating is used within the midnight boiling time, so even when floor heating is used, the heating end time of the electric water heater is As for the capacity | capacitance of the heaters 2 and 3 arrange | positioned in the tank 1, it is desirable to use a capacity | capacitance larger than usual so that the hot water stored in the tank 1 of an electric water heater may boil up reliably.
Since the floor surface material functions as a heat storage material, the end time of boiling of the electric water heater is predicted within the midnight boiling time, and the load of floor heating is taken into account, and the midnight power hours By heating the floor several hours before the end time of the obi, low-cost late-night power is used to store heat in the tank 1 of the electric water heater and the constituent materials of the floor to achieve efficient floor heating can do.
[0035]
In addition, the other structure and effect | action of this hot-water supply heating system are the same as that of the hot-water supply heating system of the said 1st Example.
[0036]
As mentioned above, although the hot water supply and heating system of the present invention has been described based on the embodiments thereof, the present invention is not limited to the configurations described in the above embodiments, and the configuration is appropriately changed without departing from the spirit thereof. Moreover, the application object also includes heaters other than the bathroom heater / dryer and floor heater of the above-described embodiment.
[0037]
【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 in the room. Heating (and / or drying) is performed by the heat exchanger of the heater after being supplied to the machine, so a new heat source is not required for heating (and / or drying) the room, and the equipment cost In addition, the running cost can be reduced.
In addition, at the start of operation, the heated water already stagnated in the heat exchanger installed in the tank, so the heated 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, so there is no loss during combustion due to repeated operation and stop of combustion even when performing indoor temperature control, and heating capacity Can be greatly increased.
In addition, the expansion tank disposed in the heating circuit can absorb the expansion and contraction of the volume of circulating water due to temperature changes, so that the amount of water in the heating circuit can be kept constant, and heat exchange for heating The hot water can be circulated stably between the heater and the heater installed indoors.
In addition, a makeup water pipe is constructed so that makeup water for the expansion tank is branched from the water supply or hot water supply pipe of the electric water heater, and an opening / closing valve that automatically opens and closes according to the level of the expansion tank in the makeup water pipe. Since it arrange | positions, even when the amount of circulating water reduces, circulating water can be replenished and simplification of a maintenance can be achieved.
[0038]
In particular, the heat exchanger for heating and the heat exchanger for reheating the hot water in the bathtub are spirally formed so that the winding diameter of the heat exchanger for heating is smaller than that of the heat exchanger for reheating the hot water in the bathtub. Formed in the tank of the electric water heater so that the convection and circulation of the hot water stored in the tank is maintained through the space between the heat exchanger for heating and the heat exchanger for reheating the hot water in the bathtub. By arranging a heat exchanger for reheating the hot water in the bathtub on the outer periphery of the heat exchanger for heating at the top and installing it in parallel, it is possible to effectively use the upper space in the tank of the electric water heater It is possible to reduce the amount of hot water when reheating the inside of an electric water heater tank with the upper heater, reducing the energy cost, and heat exchange for reheating the hot water in the bathtub that requires a large amount of heat. The amount of heat between the heat exchanger and a heat exchanger for heating that requires a relatively small amount of heat. It is possible to take a lance easily.
[0039]
Furthermore, by performing heating with a heater before the end time of the midnight power time zone, heat storage is performed, so that cheap midnight power is used for electric water heaters and, for example, flooring components. It can store heat and achieve efficient heating.
[Brief description of the drawings]
FIG. 1 is a schematic structural diagram showing a first embodiment of a hot water supply and heating system according to the present invention.
2A and 2B show an electric water heater used in the hot water supply and heating system of the present invention, in which FIG. 2A is a cross-sectional view, and FIG. 2B is a front view of a heat exchanger disposed in a tank of the electric water heater.
FIG. 3 is a schematic structural diagram showing a second embodiment of the hot water supply and 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 Supply pipe 6 Hot water side piping 7 Heat exchanger piping 8 Heat exchanger piping 9 Tap water side piping 10 Bathtub 41 Heat exchanger for heating (bathroom) Heat exchanger for heating and drying, heat exchanger for floor heating)
42 Heater (bathroom heater / dryer, floor heater)
43 Heating side piping 44 Heating side piping 45 Expansion tank 46 Circulating pump 47a Upper limit level sensor 47b Lower limit level sensor 48 Overflow pipe 49 Supplementary water piping 50 On-off valve (water supply solenoid valve)
51 Control device

Claims (2)

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給湯暖房システムにおいて、暖房用熱交換器と浴槽内の湯の追い焚き用熱交換器を、暖房用熱交換器の巻き径が、浴槽内の湯の追い焚き用熱交換器の巻き径より小さい螺旋状に形成し、暖房用熱交換器と浴槽内の湯の追い焚き用熱交換器の間を通ってタンク内に貯留された温水の対流と循環が維持されるように、電気温水器のタンク内の上部に、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て並列に設置したことを特徴とする給湯暖房システム。The electric water heater was used to supply hot water to the bathtub, and the space between the heat exchanger for heating 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 disposed in the heating circuit, and makeup water to the expansion tank is supplied from a water supply or hot water supply pipe of an electric water heater. In a hot water supply and heating system in which a makeup water pipe is constructed so as to branch and is taken in, and an on-off valve that automatically opens and closes according to the level of the expansion tank is provided in the makeup water pipe . The hot water reheating heat exchanger is formed in a spiral shape in which the winding diameter of the heating heat exchanger is smaller than the winding diameter of the hot water reheating heat exchanger in the bathtub, and the heating heat exchanger and the bathtub Of the heat exchanger for reheating the hot water Heat exchanger for replenishing hot water in the bathtub on the upper part of the tank of the electric water heater and the outer periphery of the heat exchanger for heating so that the convection and circulation of the hot water stored in the tank through can be maintained A hot water supply and heating system characterized in that the two are installed in parallel . 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記載の給湯暖房システム。The hot water supply and heating system according to claim 1 , wherein heat storage is performed by performing heating by a heater from 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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JP2007085664A (en) * 2005-09-22 2007-04-05 Matsushita Electric Ind Co Ltd Hot water storage 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
US20120164592A1 (en) * 2009-09-16 2012-06-28 Israel Maoz Water Heating System
JP6000065B2 (en) * 2012-10-31 2016-09-28 株式会社ガスター Heat source equipment
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
JP7167650B2 (en) * 2018-11-13 2022-11-09 三菱電機株式会社 Storage hot water heater

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