JP3838194B2

JP3838194B2 - Heating system

Info

Publication number: JP3838194B2
Application number: JP2002345151A
Authority: JP
Inventors: 裕三山本
Original assignee: Noritz Corp
Current assignee: Noritz Corp
Priority date: 2002-11-28
Filing date: 2002-11-28
Publication date: 2006-10-25
Anticipated expiration: 2022-11-28
Also published as: JP2004177025A

Description

【０００１】
【発明の属する技術分野】
この発明は、夏期等の非暖房時に得られた熱を有効利用して冬季に暖房を行う暖房システムに関する。
【０００２】
【従来の技術】
この種の暖房システムとしては、例えば、図１１に示すように、夏期の太陽熱を利用して生成された温水を冬期の暖房に利用するものがある。この暖房システム５０は、同図に示すように、蓄熱媒体としての水が貯留される、地中に設けられた蓄熱槽５１と、家屋の屋根面等に設置され、太陽熱を集熱するソーラー集熱器５２と、蓄熱槽５１とソーラー集熱器５２とを接続する、一次側循環ポンプ５３ａを有する一次側循環回路５３とを備えており、蓄熱槽５１内に貯留された水を、ソーラー集熱器５２に循環供給することで温水が生成され、この温水が蓄熱槽５１に貯留されるようになっている。
【０００３】
また、この暖房システム５０では、家屋内に、床暖房フロアやファンコンベクタ等の温水暖房端末装置５４が設置されており、蓄熱槽５１に貯留された温水を、二次側循環ポンプ５５ａを有する二次側循環回路５５を介して、温水暖房端末装置５４に循環供給することによって、家屋内の暖房が行われるようになっている。
【０００４】
【特許文献１】
特開平９−１０１０６１号公報
【特許文献２】
特開平１１−２１１１５９号公報
【０００５】
【発明が解決しようとする課題】
従って、こういった暖房システム５０では、日射の強い夏場に生成した温水を蓄熱槽５１に貯留しておき、この蓄熱槽５１に貯留された温水を冬場の暖房に有効利用することができるという利点がある。
【０００６】
しかしながら、蓄熱槽５１に貯留された温水を暖房熱源として利用するためには、上述したように、二次側循環ポンプ５５ａや循環配管等からなる二次側循環回路５５を設け、この二次側循環回路５５によって、蓄熱槽５１に貯留された温水を家屋内に設置されたファンコンベクタ等の温水暖房端末装置５４に循環供給しなければならず、蓄熱槽５１に貯留された温水を利用する二次側機器等のイニシャルコストやランニングコストが高くなるといった問題がある。
【０００７】
そこで、この発明の課題は、蓄熱槽に貯留された温水等の蓄熱媒体を暖房熱源として利用する二次側機器等のイニシャルコストやランニングコストを最小限に抑えることができる暖房システムを提供することにある。
【０００８】
【課題を解決するための手段及びその効果】
上記の課題を解決するため、請求項１にかかる発明は、暖房しようとする建物の直下において、地中に設けられた蓄熱槽と、少なくとも、非暖房時に、補助熱源から得られる熱を利用して加熱された蓄熱媒体を前記蓄熱槽に貯留することによって集熱する集熱手段と、暖房時に、前記蓄熱槽内に蓄えられた熱を、前記建物の床に伝導する熱伝導手段とを備え、前記熱伝導手段は、前記建物の床に埋設された金属製の放熱部材と、下端側を前記蓄熱槽に貯留された蓄熱媒体に浸漬するヒートパイプと、このヒートパイプの上端部に固着された、前記ヒートパイプを前記放熱部材に取り付ける金属製の取付部材とを備えており、前記放熱部材は、上端側に向かって内周面が徐々に大径になるように形成されたテーパ部及びこのテーパ部の下端側に連設された、内周面に雌ねじが形成されたストレート部を有する円筒部材を備え、前記取付部材は、前記円筒部材の前記テーパ部に嵌り込むテーパ部及びこのテーパ部の下端側に連設された、外周面に雄ねじが形成されたストレート部を有し、前記取付部材は、そのストレート部が、そのテーパ部の外周面を前記円筒部材の前記テーパ部の内周面に接触離反させることができるように、前記円筒部材の前記ストレート部にねじ込まれていることを特徴とする暖房システムを提供するものである。
【０００９】
以上のように、この暖房システムでは、蓄熱槽内の蓄熱媒体に蓄えられた熱を、熱伝導手段によって、建物の床や建物内の空気に伝導することで、建物内を暖房するようにしたので、従来の暖房システムのように、温水暖房端末装置や二次側循環ポンプ等の二次側循環回路を設置する必要がなく、二次側機器のイニシャルコストやランニングコストを最小限に抑えつつ、低コストで家屋内の暖房を行うことが可能となる。
【００１０】
また、この暖房システムでは、熱伝導手段が、建物の床に埋設された金属製の放熱部材と、下端側を前記蓄熱槽に貯留された蓄熱媒体に浸漬するヒートパイプと、このヒートパイプの上端部に固着された、前記ヒートパイプを前記放熱部材に取り付ける金属製の取付部材とを備えているので、蓄熱槽内の蓄熱媒体に蓄えられた熱を、建物の床に効率よく伝導することができ、暖房効率が向上する。
【００１１】
また、この暖房システムでは、取付部材のストレート部を、放熱部材を構成している円筒部材のストレート部に完全にねじ込むと、円筒部材のテーパ部の内周面と取付部材のテーパ部の外周面とが密接した状態で、ヒートパイプが放熱部材に装着され、ヒートパイプの熱が、取付部材を介して、放熱部材に良好に伝導される状態となり、円筒部材に対する取付部材のねじ込み量を小さくすると、円筒部材のテーパ部の内周面と取付部材のテーパ部の外周面とが相互に離反して、取付部材と放熱部材との間の伝熱面積が減少し、ヒートパイプの熱が、取付部材を介して、放熱部材に伝導されにくい状態となるので、暖房負荷に応じて、放熱部材に対する取付部材のねじ込み量を調整することで、暖房能力を調整することができる。
【００１２】
また、上記の課題を解決するため、請求項２にかかる発明は、暖房しようとする建物の直下において、地中に設けられた蓄熱槽と、少なくとも、非暖房時に、補助熱源から得られる熱を利用して加熱された蓄熱媒体を前記蓄熱槽に貯留することによって集熱する集熱手段と、暖房時に、前記蓄熱槽内に蓄えられた熱を、前記建物の床に伝導する熱伝導手段とを備え、前記熱伝導手段は、前記建物の床に埋設された金属製の放熱部材と、下端側を前記蓄熱槽に貯留された蓄熱媒体に浸漬するヒートパイプとを備えており、前記放熱部材は、前記ヒートパイプをスライド可能に挿通するストレート状の円筒部材を有し、前記ヒートパイプの上端部には、前記円筒部材に挿通された前記ヒートパイプを昇降させる操作棒が連結されていることを特徴とする暖房システムを提供するものである。
【００１３】
以上のように構成された暖房システムは、請求項１にかかる発明の暖房システムと同様に、蓄熱槽内の蓄熱媒体に蓄えられた熱を、建物の床に効率よく伝導することができるので、暖房効率が向上する。また、この暖房システムでは、操作棒を操作することによってヒートパイプを昇降させることで、放熱部材の円筒部材に対するヒートパイプの接触面積を変化させることができるので、暖房負荷に応じて、ヒートパイプを昇降させることで、暖房能力を調整することができる。
【００１４】
【発明の実施の形態】
以下、実施の形態について図面を参照して説明する。図１に示すように、この暖房システム１は、家屋Ｃ内を暖房するためのものであり、家屋Ｃの直下において、地中に設けられた蓄熱槽１０と、補助熱源としての太陽熱によって加熱された蓄熱媒体（温水）を蓄熱槽１０に貯留することによって集熱する集熱手段２０と、蓄熱槽１０内の蓄熱媒体（温水）に蓄えられた熱を、家屋Ｃの床Ｆに伝導する熱伝導手段３０とを備えている。
【００１５】
前記蓄熱槽１０は、図１に示すように、地中に形成されたコンクリート層１１と、このコンクリート層１１の内側に形成された断熱層１２と、この断熱層１２の内側に配設された、金属またはＦＲＰ等の材料で作られた貯留容器１３とによって構成されており、貯留容器１３内は、蓄熱媒体として導入された水道水等の水によって充満されている。
【００１６】
前記集熱手段２０は、図１に示すように、家屋Ｃの屋根面に設置されるソーラー集熱器２１と、蓄熱槽１０とソーラー集熱器２１とを接続する往き配管２２ａ及び戻り配管２２ｂと、往き配管２２ａに設置された、蓄熱槽１０内に貯留された蓄熱媒体（水）を汲み上げてソーラー集熱器２１に供給する循環ポンプ２３とを備えており、往き配管２２ａは、蓄熱槽１０の下部側に滞留している温度の低い蓄熱媒体をソーラー集熱器２１に供給することができるように、蓄熱槽１０の下部側まで延びていると共に、戻り配管２２ｂは、ソーラー集熱器２１によって加熱された蓄熱媒体が、温度の高い蓄熱媒体が滞留している蓄熱槽１０の上部側に放出されるように、蓄熱槽１０の上部側で開放されている。
【００１７】
なお、この集熱手段２０は、集熱温度、即ち、ソーラー集熱器２１の出口側における蓄熱媒体の温度が蓄熱槽１０の下部に滞留している蓄熱媒体の温度より所定温度（例えば、７℃）以上高くなると、循環ポンプ２３を起動して、蓄熱運転を行うようになっており、集熱温度と蓄熱槽１０の下部に滞留している蓄熱媒体の温度との差が所定温度（例えば、３℃）以下になると、循環ポンプ２３の運転を停止し、蓄熱運転を行わないようになっている。
【００１８】
前記熱伝導手段３０は、図１〜図３に示すように、家屋Ｃの床Ｆに埋設された熱伝導性の良好な金属製の放熱部材３１とヒートパイプ３６とを備えており、ヒートパイプ３６は、その上端部に固着された、熱伝導性の良好な金属製の取付部材３７を介して、放熱部材３１に取り外し可能に装着されるようになっている。
【００１９】
前記放熱部材３１は、図２（ａ）、（ｂ）に示すように、上端側に向かって徐々に大径になるように形成されたテーパ部３３及びこのテーパ部３３の下端側に連設された、内周面に雌ねじ３４ａが形成されたストレート部３４からなる円筒部材３２と、テーパ部３３の外周面から径方向外側に張り出す複数の放熱フィン３５とを備えており、円筒部材３２は家屋Ｃの床Ｆの厚みと略同一の長さ（高さ）を有している。従って、この放熱部材３１が家屋Ｃの床Ｆに埋設された状態では、床Ｆの上面にテーパ部３３のテーパ穴が、床Ｆの下面にはストレート部３４のねじ穴がそれぞれ開放された状態となっている。
【００２０】
前記ヒートパイプ３６は、沸点が５０℃付近である常温で液体の熱伝導媒体が金属管に密封されたものであり、放熱部材３１に装着された状態では、蓄熱槽１０を構成しているコンクリート層１１、断熱層１２及び貯留容器１３を貫通して、液化した前記熱伝導媒体が溜まる金属管の下半部が蓄熱槽１０内に貯留された蓄熱媒体に浸漬されるようになっている。
【００２１】
従って、蓄熱槽１０に貯留された蓄熱媒体によってヒートパイプ３６の下半部が５０℃以上に加熱されると、金属管に密封された熱伝導媒体が気化し、蓄熱媒体に蓄えられた熱が潜熱として吸収された状態で、熱伝導媒体が金属管内を上昇する。気化した熱伝導媒体が金属管の上端部まで到達すると、熱伝導媒体は、放熱部材３１を介して、家屋Ｃの床Ｆによって冷却されるので、即ち、放熱部材３１を介して、家屋Ｃの床Ｆに潜熱を放出することになるので、再び、液化し、熱伝導媒体が金属管内を降下する。このように、金属管に密封された熱伝導媒体が状態変化を繰り返しながら、吸放熱を繰り返すことによって、蓄熱槽１０に貯留されている蓄熱媒体に蓄えられた熱が家屋Ｃの床Ｆに伝導されることになる。
【００２２】
前記取付部材３７は、図３に示すように、上述した円筒部材３２のテーパ部３３に嵌り込むテーパ部３８と、このテーパ部３８の下端に連設され、外周面に円筒部材３２の雌ねじ３４ａに螺合する雄ねじ３９ａが形成されたストレート部３９とを備えており、テーパ部３８の上面には、取付部材３７のストレート部３９を放熱部材３１のストレート部３４にねじ込む際、回転操作するための操作部３７ａが設けられている。
【００２３】
従って、図４に示すように、取付部材３７のストレート部３９を、放熱部材３１を構成している円筒部材３２のストレート部３４に完全にねじ込むと、円筒部材３２のテーパ部３３の内周面と取付部材３７のテーパ部３８の外周面とが密接した状態で、ヒートパイプ３６が放熱部材３１に装着され、ヒートパイプ３６の熱が、取付部材３７を介して、放熱部材３１に良好に伝導される状態となる。
【００２４】
一方、図５に示すように、円筒部材３２に対する取付部材３７のねじ込み量を小さくすると、円筒部材３２のテーパ部３３の内周面と取付部材３７のテーパ部３８の外周面とが相互に離反するので、取付部材３７と放熱部材３１との間の伝熱面積が減少し、ヒートパイプ３６の熱が、取付部材３７を介して、放熱部材３１に伝導されにくい状態となる。
【００２５】
また、放熱部材３１からヒートパイプ３６を取り外すと、円筒部材３２のテーパ穴やねじ穴及び蓄熱槽１０におけるヒートパイプ３６の貫通穴が開放された状態となるので、図６及び図７に示すように、放熱部材３１における円筒部材３２のテーパ部３３に嵌り込むテーパ部４１と、このテーパ部４１の下端に連設され、外周面に円筒部材３２の雌ねじ３４ａに螺合する雄ねじ４２ａが形成されたストレート部４２と、このストレート部４２の下端に連設され、蓄熱槽１０におけるヒートパイプ３６の貫通穴に挿通される閉鎖部４３とを備えた合成樹脂製の閉鎖部材４０を装着することによって、蓄熱槽１０におけるヒートパイプ３６の貫通穴を閉塞することができるようになっている。なお、テーパ部４１の上面には、閉鎖部材４０のストレート部４２を放熱部材３１のストレート部３４にねじ込む際、回転操作するための操作部４０ａが設けられている。
【００２６】
以上のように構成された暖房システム１では、夏場等の非暖房期は、放熱部材３１からヒートパイプ３６を取り外し、図７に示すように、放熱部材３１に閉鎖部材４０を装着することによって、蓄熱槽１０におけるヒートパイプ３６の貫通穴を閉塞しておく。これによって、日射の強い夏場等の非暖房期には、集熱手段２０によって、蓄熱槽１０内の蓄熱媒体に太陽熱が蓄えられ、蓄熱媒体に蓄えられた太陽熱はほとんど放熱されることなく、冬場等の暖房期まで保持されることになる。
【００２７】
一方、冬場等の暖房期は、逆に、放熱部材３１から閉鎖部材４０を取り外し、図４に示すように、放熱部材３１にヒートパイプ３６を装着することによって、ヒートパイプ３６の下半部を蓄熱槽１０内に貯留された蓄熱媒体に浸漬する。これによって、蓄熱槽１０内の蓄熱媒体に蓄えられた太陽熱が、放熱部材３１及びヒートパイプ３６からなる熱伝導手段３０を介して家屋Ｃの床Ｆに伝導され、床Ｆが昇温することによって家屋Ｃ内が暖房される。このとき、図５に示すように、暖房負荷に応じて、放熱部材３１に対する取付部材３７のねじ込み量を調整することによって、放熱部材３１に対するヒートパイプ３６（取付部材３７）の接触面積を変化させることで、暖房能力を適宜調整すればよい。
【００２８】
以上のように、この暖房システム１では、集熱手段２０によって、蓄熱槽１０内の蓄熱媒体に蓄えられた熱を、熱伝導手段３０によって、家屋Ｃの床Ｆに伝導することで、家屋Ｃ内を暖房するようにしたので、蓄熱槽を使用した従来の暖房システムのように、温水暖房端末装置や、蓄熱槽内に貯留された温水を温水暖房端末装置に循環供給するための二次側循環ポンプ及び配管等からなる二次側循環回路を設置する必要がなく、二次側機器のイニシャルコストやランニングコストを最小限に抑えつつ、低コストで家屋Ｃ内の暖房を行うことが可能となる。
【００２９】
また、この暖房システム１では、蓄熱媒体に蓄えられた太陽熱を家屋Ｃの床Ｆに伝導する熱伝導手段３０として、多数の放熱フィン３５を有する放熱部材３１と、金属管に密封された熱伝導媒体の状態変化によって熱を伝導するヒートパイプ３６とを使用し、家屋Ｃの床Ｆに埋設された放熱部材３１にヒートパイプ３６を装着するようにしたので、蓄熱槽１０内の蓄熱媒体に蓄えられた太陽熱を、効率よく放熱部材３１に伝導することができ、しかも、床Ｆに対する伝熱面積が大きくなるので、ヒートパイプ３６から放熱部材３１に伝導された熱を、効率よく床Ｆに伝導することができる。従って、この暖房システム１では、蓄熱槽１０内の蓄熱媒体に蓄えられた太陽熱を利用して、家屋Ｃ内を効率よく暖房することが可能となる。
【００３０】
また、この暖房システム１では、上述したように、夏場等の非暖房期は、放熱部材３１からヒートパイプ３６を取り外し、放熱部材３１に閉鎖部材４０を装着することによって、蓄熱槽１０内の蓄熱媒体から家屋Ｃの床Ｆへの熱伝導を極力抑えるようにしているので、蓄熱槽１０に貯留された蓄熱媒体からの無駄な放熱が抑えられ、良好な蓄熱効率を確保することができる。
【００３１】
なお、上述した実施形態では、熱伝導手段３０として、多数の放熱フィン３５を有する放熱部材３１を使用しているが、これに限定されるものではなく、ヒートパイプ３６の使用本数を増やすことができるのであれば、必ずしも、放熱部材３１を使用する必要はなく、ヒートパイプ３６を床Ｆに直接または放熱フィンを備えていない単なる支持部材を介して取り付けるようにしてもよい。
【００３２】
また、上述した実施形態では、熱伝導手段３０として、テーパ部３３を有する円筒部材３２を備えた放熱部材３１と、この放熱部材３１の円筒部材３２に嵌り込むテーパ部３８を有する取付部材３７が固着されたヒートパイプ３６とを使用し、放熱部材３１の円筒部材３２に対する取付部材３７のねじ込み量を変化させることによって、円筒部材３２に対する取付部材３７の接触面積を変化させ、これによって、放熱部材３１とヒートパイプ３６との間の熱伝導性能を変化させるようにしているが、これに限定されるものではなく、例えば、図８（ａ）、（ｂ）に示すように、ストレート状の円筒部材３２Ａと、その円筒部材３２Ａの外周面から径方向外側に張り出す複数の放熱フィン３５Ａとによって放熱部材３１Ａを構成すると共に、この放熱部材３１Ａの円筒部材３２Ａに、上端に操作棒３６ａが連結されたヒートパイプ３６をスライド可能に挿通し、操作棒３６ａを操作することによってヒートパイプ３６を昇降させることで、放熱部材３１Ａ（円筒部材３２Ａ）に対するヒートパイプ３６の接触面積を変化させることも可能である。
【００３３】
また、上述した実施形態では、非暖房期にヒートパイプ３６を放熱部材３１から完全に取り外すようにしているが、これに限定されるものではなく、例えば、図７に示す熱伝導手段の場合、図９に示すように、非暖房期には、操作棒３６ａを押し下げることによって、ヒートパイプ３６を円筒部材３２Ａから完全に離脱させるようにしてもよく、図１０に示すように、ヒートパイプ３６の操作棒３６ａを、放熱部材３１Ａの円筒部材３２Ａや蓄熱槽１０におけるヒートパイプ３６の貫通穴に挿通される閉塞部材４０Ａが取り付けられた操作棒３６Ａに取り替えるようにしてもよい。
【００３４】
また、上述した実施形態では、蓄熱槽１０内の蓄熱媒体に蓄えられた太陽熱を家屋Ｃの床Ｆに伝導するようにしているが、これに限定されるものではなく、例えば、ヒートパイプ３６の上端部を家屋内の空間に突出させ、蓄熱槽１０内の蓄熱媒体に蓄えられた太陽熱を家屋Ｃ内の空気に伝導することによって、家屋Ｃ内を暖房することも可能である。
【００３５】
また、上述した実施形態では、熱伝導手段３０として、金属管に密封された熱伝導媒体の状態変化によって熱を伝導するヒートパイプ３６を使用しているが、これに限定されるものではなく、熱伝導率の高い物質（例えば、アルミニウム、銅といった金属類等）によって形成された単なる筒状部材や棒状部材等を使用することも可能である。
【００３６】
また、上述した実施形態では、蓄熱槽１０内の蓄熱媒体に蓄えられた太陽熱を暖房用の熱源としてのみ使用しているが、例えば、給湯系統への給水管を蓄熱槽１０内に導入することにより、蓄熱媒体に蓄えられた太陽熱を給湯用の補助熱源として使用することも可能であり、ヒートパイプ３６を温水洗浄弁座の洗浄水タンクに導入することによって、蓄熱媒体に蓄えられた太陽熱を尻洗浄用の温水を生成するための熱源として使用することも可能である。
【００３７】
また、上述した実施形態では、補助熱源として太陽熱を利用しているが、これに限定されるものではなく、発電機等の排熱を補助熱源として利用することも可能である。
【図面の簡単な説明】
【図１】この発明にかかる暖房システムの一実施形態を示す概略構成図である。
【図２】（ａ）は同上の暖房システムに採用されている熱伝導手段を構成している放熱部材を示す斜視図、（ｂ）は同上の放熱部材を示す断面図である。
【図３】同上の熱伝導手段を構成しているヒートパイプ及びその取付部材を示す断面図である。
【図４】同上のヒートパイプを同上の放熱部材に装着した状態を示す断面図である。
【図５】同上の放熱部材に対する同上のヒートパイプ（取付部材）の接触面積を変化させた状態を示す断面図である。
【図６】同上の放熱部材に装着される閉鎖部材を示す断面図である。
【図７】同上の閉鎖部材を同上の放熱部材に装着した状態を示す断面図である。
【図８】（ａ）、（ｂ）は同上の熱伝導手段における変形例を示す断面図である。
【図９】同上の熱伝導手段における非暖房期の使用状態を示す断面図である。
【図１０】同上の熱伝導手段における他の変形例を示す断面図である。
【図１１】蓄熱槽を使用した従来の暖房システムを示す概略構成図である。
【符号の説明】
１暖房システム
１０蓄熱槽
１１コンクリート層
１２断熱層
１３貯留容器
２０集熱手段
２１ソーラー集熱器
２２ａ往き配管
２２ｂ戻り配管
２３循環ポンプ
３０熱伝導手段
３１、３１Ａ放熱部材
３２、３２Ａ円筒部材
３３テーパ部
３４ストレート部
３４ａ雌ねじ
３５、３５Ａ放熱フィン
３６ヒートパイプ
３６ａ、３６Ａ操作棒
３７取付部材
３７ａ操作部
３８テーパ部
３９ストレート部
３９ａ雄ねじ
４０、４０Ａ閉鎖部材
４０ａ操作部
４１テーパ部
４２ストレート部
４３閉鎖部
Ｃ家屋
Ｆ床[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heating system that performs heating in winter by effectively using heat obtained during non-heating such as in summer.
[0002]
[Prior art]
As this type of heating system, for example, as shown in FIG. 11, there is a system that uses hot water generated by using solar heat in summer for heating in winter. As shown in the figure, the heating system 50 is installed in a ground heat storage tank 51 in which water as a heat storage medium is stored, a roof surface of a house, etc., and a solar collector that collects solar heat. A heater 52, a primary-side circulation circuit 53 having a primary-side circulation pump 53a that connects the heat-storage tank 51 and the solar heat collector 52, and water collected in the heat-storage tank 51 The hot water is generated by circulating supply to the heater 52, and the hot water is stored in the heat storage tank 51.
[0003]
Further, in this heating system 50, a hot water heating terminal device 54 such as a floor heating floor or a fan convector is installed in the house, and the hot water stored in the heat storage tank 51 is supplied to the second having a secondary circulation pump 55a. Heating the house is performed by circulatingly supplying the hot water heating terminal device 54 via the secondary circuit 55.
[0004]
[Patent Document 1]
JP-A-9-101061 [Patent Document 2]
Japanese Patent Laid-Open No. 11-211159
[Problems to be solved by the invention]
Therefore, in such a heating system 50, the hot water produced | generated in the summertime with strong solar radiation is stored in the thermal storage tank 51, and the hot water stored in this thermal storage tank 51 can be effectively utilized for the heating in winter. There is.
[0006]
However, in order to use the hot water stored in the heat storage tank 51 as a heating heat source, as described above, the secondary side circulation circuit 55 including the secondary side circulation pump 55a and the circulation pipe is provided, and this secondary side The hot water stored in the heat storage tank 51 must be circulated and supplied to the hot water heating terminal device 54 such as a fan convector installed in the house by the circulation circuit 55, and the hot water stored in the heat storage tank 51 is used. There is a problem that the initial cost and running cost of the secondary device and the like are high.
[0007]
Then, the subject of this invention is providing the heating system which can suppress initial cost and running cost of secondary side equipment etc. which use heat storage media, such as warm water stored in a heat storage tank, as a heating heat source to the minimum. It is in.
[0008]
[Means for solving the problems and effects thereof]
In order to solve the above-mentioned problems, the invention according to claim 1 uses a heat storage tank provided in the ground directly under a building to be heated and heat obtained from an auxiliary heat source at least during non-heating. A heat collecting means for collecting heat by storing the heated heat storage medium in the heat storage tank, and heat conduction means for conducting heat stored in the heat storage tank to the floor of the building during heating. The heat conducting means is fixed to a metal heat radiating member embedded in the floor of the building, a heat pipe dipping the lower end side in a heat storage medium stored in the heat storage tank, and an upper end portion of the heat pipe. A metal mounting member for attaching the heat pipe to the heat radiating member, and the heat radiating member includes a tapered portion formed so that an inner peripheral surface gradually becomes larger in diameter toward an upper end side; On the lower end side of this taper Provided with a cylindrical member having a straight portion with an internal thread formed on the inner peripheral surface, and the mounting member is provided continuously with a tapered portion fitted into the tapered portion of the cylindrical member and a lower end side of the tapered portion. The mounting member may have a straight portion having a male thread formed on the outer peripheral surface, and the mounting member may cause the straight portion to contact and separate the outer peripheral surface of the tapered portion from the inner peripheral surface of the tapered portion of the cylindrical member. The heating system is characterized by being screwed into the straight portion of the cylindrical member so as to be able to do so.
[0009]
As described above, in this heating system, the heat stored in the heat storage medium in the heat storage tank is conducted to the building floor or air in the building by the heat conduction means, thereby heating the inside of the building. As with conventional heating systems, there is no need to install a secondary circulation circuit such as a hot water heating terminal device or a secondary circulation pump, minimizing the initial cost and running cost of the secondary equipment, Heating of the house can be performed at low cost.
[0010]
Further, in this heating system, the heat conduction means comprises a heat pipe immersing a metallic heat dissipating member that is embedded in the building floor, in the heat storage medium that is storing the lower side to the heat storage tank, the heat pipe Since it has a metal mounting member that is fixed to the upper end portion and attaches the heat pipe to the heat radiating member, the heat stored in the heat storage medium in the heat storage tank is efficiently conducted to the floor of the building. There can, the heating efficiency is improved.
[0011]
Further, in this heating system, when the straight portion of the mounting member is completely screwed into the straight portion of the cylindrical member constituting the heat dissipation member, the inner peripheral surface of the tapered portion of the cylindrical member and the outer peripheral surface of the tapered portion of the mounting member When the heat pipe is attached to the heat dissipation member, the heat of the heat pipe is well conducted to the heat dissipation member through the mounting member, and the screwing amount of the mounting member to the cylindrical member is reduced. The inner peripheral surface of the tapered portion of the cylindrical member and the outer peripheral surface of the tapered portion of the mounting member are separated from each other, the heat transfer area between the mounting member and the heat radiating member is reduced, and the heat of the heat pipe is attached Since it becomes difficult to be conducted to the heat radiating member via the member, the heating capacity can be adjusted by adjusting the screwing amount of the mounting member to the heat radiating member according to the heating load.
[0012]
Moreover, in order to solve said subject, the invention concerning Claim 2 has the heat | fever obtained from an auxiliary heat source at the time of the non-heating at least in the thermal storage tank provided in the ground directly under the building which is going to be heated. A heat collecting means for collecting heat by storing the heat storage medium heated by use in the heat storage tank; and a heat conducting means for conducting heat stored in the heat storage tank to the floor of the building during heating. The heat conducting means includes a metal heat radiating member embedded in the floor of the building, and a heat pipe that immerses the lower end side in a heat storage medium stored in the heat storage tank, and the heat radiating member Has a straight cylindrical member through which the heat pipe is slidably inserted, and an operation rod for moving up and down the heat pipe inserted through the cylindrical member is connected to an upper end portion of the heat pipe. Features It is intended to provide a heating system.
[0013]
Since the heating system configured as described above can efficiently conduct the heat stored in the heat storage medium in the heat storage tank to the floor of the building, similarly to the heating system of the invention according to claim 1, Heating efficiency is improved. Further, in this heating system, the contact area of the heat pipe with respect to the cylindrical member of the heat radiating member can be changed by raising and lowering the heat pipe by operating the operation rod. By raising and lowering, the heating capacity can be adjusted.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings. As shown in FIG. 1, this heating system 1 is for heating the inside of the house C, and is heated by the solar heat as an auxiliary heat source and the heat storage tank 10 provided in the ground directly under the house C. Heat collecting means 20 that collects heat by storing the stored heat storage medium (warm water) in the heat storage tank 10, and heat that conducts heat stored in the heat storage medium (warm water) in the heat storage tank 10 to the floor F of the house C Conduction means 30.
[0015]
As shown in FIG. 1, the heat storage tank 10 is disposed inside the concrete layer 11 formed in the ground, the heat insulating layer 12 formed inside the concrete layer 11, and inside the heat insulating layer 12. The storage container 13 is made of a material such as metal or FRP. The storage container 13 is filled with water such as tap water introduced as a heat storage medium.
[0016]
As shown in FIG. 1, the heat collecting means 20 includes a solar heat collector 21 installed on the roof surface of the house C, a forward piping 22a and a return piping 22b that connect the heat storage tank 10 and the solar heat collecting device 21. And a circulation pump 23 that is installed in the forward piping 22a and pumps up a heat storage medium (water) stored in the thermal storage tank 10 and supplies it to the solar heat collector 21. The forward piping 22a is a thermal storage tank. 10 is extended to the lower side of the heat storage tank 10 so that the low-temperature heat storage medium staying at the lower side of the solar battery can be supplied to the solar heat collector 21, and the return pipe 22 b The heat storage medium heated by 21 is open | released by the upper side of the heat storage tank 10 so that it may discharge | release to the upper side of the heat storage tank 10 in which the high temperature heat storage medium is staying.
[0017]
The heat collecting means 20 has a predetermined temperature (for example, 7) from the temperature of the heat storage medium, that is, the temperature of the heat storage medium on the outlet side of the solar heat collector 21 is staying in the lower part of the heat storage tank 10. When the temperature is higher than [° C.], the circulation pump 23 is started to perform the heat storage operation, and the difference between the heat collection temperature and the temperature of the heat storage medium staying in the lower part of the heat storage tank 10 is a predetermined temperature (for example, 3 ° C.) or less, the operation of the circulation pump 23 is stopped and the heat storage operation is not performed.
[0018]
As shown in FIGS. 1 to 3, the heat conducting means 30 includes a heat radiating member 31 and a heat pipe 36, which are embedded in the floor F of the house C and have good heat conductivity, and a heat pipe. 36 is detachably mounted on the heat radiating member 31 through a metal mounting member 37 having a good thermal conductivity and fixed to the upper end portion thereof.
[0019]
As shown in FIGS. 2A and 2B, the heat dissipating member 31 is provided continuously with a tapered portion 33 formed so as to gradually increase in diameter toward the upper end side and the lower end side of the tapered portion 33. The cylindrical member 32 includes a straight portion 34 having an internal thread 34 a formed on the inner peripheral surface thereof, and a plurality of radiating fins 35 projecting radially outward from the outer peripheral surface of the tapered portion 33. Has the same length (height) as the thickness of the floor F of the house C. Therefore, in a state where the heat radiating member 31 is embedded in the floor F of the house C, the tapered hole of the tapered portion 33 is opened on the upper surface of the floor F, and the screw hole of the straight portion 34 is opened on the lower surface of the floor F. It has become.
[0020]
The heat pipe 36 is a concrete in which the heat storage medium 10 having a boiling point near 50 ° C. is sealed in a metal tube at a normal temperature, and the heat storage tank 10 is formed in a state where the heat pipe 36 is mounted on the heat radiating member 31. The lower half part of the metal tube that penetrates the layer 11, the heat insulating layer 12, and the storage container 13 and stores the liquefied heat conduction medium is immersed in the heat storage medium stored in the heat storage tank 10.
[0021]
Therefore, when the lower half of the heat pipe 36 is heated to 50 ° C. or more by the heat storage medium stored in the heat storage tank 10, the heat conduction medium sealed in the metal pipe is vaporized, and the heat stored in the heat storage medium is While being absorbed as latent heat, the heat transfer medium rises in the metal tube. When the vaporized heat transfer medium reaches the upper end of the metal tube, the heat transfer medium is cooled by the floor F of the house C via the heat dissipating member 31, that is, through the heat dissipating member 31, Since the latent heat is released to the floor F, it liquefies again and the heat transfer medium descends in the metal tube. In this way, heat stored in the heat storage medium stored in the heat storage tank 10 is conducted to the floor F of the house C by repeatedly absorbing and releasing heat while the heat conductive medium sealed in the metal tube repeats state changes. Will be.
[0022]
As shown in FIG. 3, the attachment member 37 is connected to the tapered portion 33 of the cylindrical member 32 described above and a lower end of the tapered portion 38, and has an internal thread 34 a of the cylindrical member 32 on the outer peripheral surface. And a straight portion 39 formed with a male screw 39a to be screwed to the upper surface of the taper portion 38 for rotating the straight portion 39 of the mounting member 37 into the straight portion 34 of the heat radiating member 31. The operation unit 37a is provided.
[0023]
Therefore, as shown in FIG. 4, when the straight portion 39 of the mounting member 37 is completely screwed into the straight portion 34 of the cylindrical member 32 constituting the heat radiating member 31, the inner peripheral surface of the tapered portion 33 of the cylindrical member 32. The heat pipe 36 is attached to the heat radiating member 31 in a state in which the outer peripheral surface of the taper portion 38 of the mounting member 37 is in close contact, and the heat of the heat pipe 36 is conducted well to the heat radiating member 31 through the mounting member 37. It will be in a state to be.
[0024]
On the other hand, as shown in FIG. 5, when the screwing amount of the mounting member 37 to the cylindrical member 32 is reduced, the inner peripheral surface of the tapered portion 33 of the cylindrical member 32 and the outer peripheral surface of the tapered portion 38 of the mounting member 37 are separated from each other. Therefore, the heat transfer area between the mounting member 37 and the heat radiating member 31 is reduced, and the heat of the heat pipe 36 is not easily conducted to the heat radiating member 31 via the mounting member 37.
[0025]
Further, when the heat pipe 36 is removed from the heat radiating member 31, the tapered hole and screw hole of the cylindrical member 32 and the through hole of the heat pipe 36 in the heat storage tank 10 are opened, so as shown in FIGS. 6 and 7. Further, a taper portion 41 fitted into the taper portion 33 of the cylindrical member 32 in the heat radiating member 31 and a male screw 42a that is connected to the lower end of the taper portion 41 and is engaged with the female screw 34a of the cylindrical member 32 are formed on the outer peripheral surface. By attaching a closing member 40 made of synthetic resin provided with a straight portion 42 and a closing portion 43 that is connected to the lower end of the straight portion 42 and is inserted into the through hole of the heat pipe 36 in the heat storage tank 10. The through hole of the heat pipe 36 in the heat storage tank 10 can be closed. An operation portion 40 a is provided on the upper surface of the taper portion 41 for rotating the straight portion 42 of the closing member 40 into the straight portion 34 of the heat dissipation member 31.
[0026]
In the heating system 1 configured as described above, in a non-heating period such as summer, the heat pipe 36 is removed from the heat radiating member 31, and the closing member 40 is attached to the heat radiating member 31 as shown in FIG. The through hole of the heat pipe 36 in the heat storage tank 10 is closed. As a result, in the non-heating period such as summertime when the solar radiation is strong, solar heat is stored in the heat storage medium in the heat storage tank 10 by the heat collecting means 20, and the solar heat stored in the heat storage medium is hardly dissipated in the winter season. It will be held until the heating period.
[0027]
On the other hand, during the heating period such as winter, conversely, the closing member 40 is removed from the heat radiating member 31, and the heat pipe 36 is attached to the heat radiating member 31, as shown in FIG. It is immersed in the heat storage medium stored in the heat storage tank 10. Thereby, the solar heat stored in the heat storage medium in the heat storage tank 10 is conducted to the floor F of the house C through the heat conduction means 30 including the heat radiating member 31 and the heat pipe 36, and the floor F is heated. House C is heated. At this time, as shown in FIG. 5, the contact area of the heat pipe 36 (mounting member 37) with respect to the heat radiating member 31 is changed by adjusting the screwing amount of the mounting member 37 with respect to the heat radiating member 31 according to the heating load. Then, what is necessary is just to adjust a heating capability suitably.
[0028]
As described above, in the heating system 1, the heat collected in the heat storage medium in the heat storage tank 10 by the heat collecting means 20 is conducted to the floor F of the house C by the heat conducting means 30, so that the house C Because the inside is heated, the secondary side for circulating and supplying hot water heating terminal device and hot water stored in the heat storage tank to the hot water heating terminal device as in the conventional heating system using the heat storage tank There is no need to install a secondary circulation circuit consisting of a circulation pump and piping, etc., and it is possible to heat the house C at low cost while minimizing the initial cost and running cost of the secondary equipment. Become.
[0029]
Moreover, in this heating system 1, as the heat conduction means 30 which conducts the solar heat stored in the heat storage medium to the floor F of the house C, the heat conduction member 31 having a large number of heat radiation fins 35 and the heat conduction sealed in the metal tube. Since the heat pipe 36 that conducts heat by changing the state of the medium is used and the heat pipe 36 is attached to the heat radiating member 31 embedded in the floor F of the house C, the heat pipe 36 is stored in the heat storage medium in the heat storage tank 10. The generated solar heat can be efficiently conducted to the heat radiating member 31, and the heat transfer area to the floor F is increased, so that the heat conducted from the heat pipe 36 to the heat radiating member 31 is efficiently conducted to the floor F. can do. Therefore, in the heating system 1, it is possible to efficiently heat the house C using solar heat stored in the heat storage medium in the heat storage tank 10.
[0030]
Further, in the heating system 1, as described above, in the non-heating period such as summer, the heat pipe 36 is removed from the heat radiating member 31 and the closing member 40 is attached to the heat radiating member 31, thereby storing heat in the heat storage tank 10. Since heat conduction from the medium to the floor F of the house C is suppressed as much as possible, useless heat radiation from the heat storage medium stored in the heat storage tank 10 can be suppressed, and good heat storage efficiency can be ensured.
[0031]
In the above-described embodiment, the heat radiating member 31 having a large number of heat radiating fins 35 is used as the heat conducting means 30. However, the present invention is not limited to this, and the number of heat pipes 36 used may be increased. If possible, it is not always necessary to use the heat radiating member 31, and the heat pipe 36 may be attached to the floor F directly or via a simple support member that does not include the heat radiating fins.
[0032]
In the above-described embodiment, the heat conducting member 30 includes the heat radiating member 31 including the cylindrical member 32 having the tapered portion 33 and the mounting member 37 having the tapered portion 38 that fits into the cylindrical member 32 of the heat radiating member 31. By using the fixed heat pipe 36 and changing the screwing amount of the mounting member 37 to the cylindrical member 32 of the heat radiating member 31, the contact area of the mounting member 37 with respect to the cylindrical member 32 is changed. However, the present invention is not limited to this. For example, as shown in FIGS. 8A and 8B, a straight cylinder is used. The heat radiating member 31A is constituted by the member 32A and a plurality of heat radiating fins 35A projecting radially outward from the outer peripheral surface of the cylindrical member 32A. A heat pipe 36 slidably inserted into the cylindrical member 32A of the heat radiating member 31A is slidably inserted into the cylindrical member 32A, and the heat pipe 36 is moved up and down by operating the operating bar 36a. It is also possible to change the contact area of the heat pipe 36 with the member 32A).
[0033]
Further, in the above-described embodiment, the heat pipe 36 is completely removed from the heat radiating member 31 in the non-heating period. However, the present invention is not limited to this. For example, in the case of the heat conducting means shown in FIG. As shown in FIG. 9, in the non-heating period, the operation pipe 36a may be pushed down to completely remove the heat pipe 36 from the cylindrical member 32A. As shown in FIG. The operation rod 36a may be replaced with an operation rod 36A to which a closing member 40A inserted into a through hole of the heat pipe 36 in the heat storage tank 10 or the cylindrical member 32A of the heat radiating member 31A is attached.
[0034]
Moreover, in embodiment mentioned above, although the solar heat stored in the thermal storage medium in the thermal storage tank 10 is conducted to the floor F of the house C, it is not limited to this, For example, of the heat pipe 36 It is also possible to heat the house C by projecting the upper end portion into the space in the house and conducting solar heat stored in the heat storage medium in the heat storage tank 10 to the air in the house C.
[0035]
Further, in the above-described embodiment, the heat conduction unit 30 uses the heat pipe 36 that conducts heat by changing the state of the heat conduction medium sealed in the metal tube, but is not limited thereto. It is also possible to use a simple cylindrical member, rod-shaped member, or the like formed of a material having high thermal conductivity (for example, metals such as aluminum and copper).
[0036]
Moreover, in embodiment mentioned above, although the solar heat stored in the thermal storage medium in the thermal storage tank 10 is used only as a heat source for heating, for example, introducing the water supply pipe to a hot water supply system in the thermal storage tank 10 Thus, it is also possible to use solar heat stored in the heat storage medium as an auxiliary heat source for hot water supply, and by introducing the heat pipe 36 into the cleaning water tank of the hot water cleaning valve seat, the solar heat stored in the heat storage medium can be used. It is also possible to use it as a heat source for generating warm water for butt washing.
[0037]
Moreover, in embodiment mentioned above, although the solar heat is utilized as an auxiliary | assistant heat source, it is not limited to this, It is also possible to utilize exhaust heat, such as a generator, as an auxiliary | assistant heat source.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing an embodiment of a heating system according to the present invention.
FIG. 2A is a perspective view showing a heat radiating member constituting a heat conducting means employed in the heating system same as above, and FIG. 2B is a cross-sectional view showing the heat radiating member same as the above.
FIG. 3 is a cross-sectional view showing a heat pipe and its mounting member constituting the heat conduction means.
FIG. 4 is a cross-sectional view showing a state in which the same heat pipe is mounted on the heat radiating member.
FIG. 5 is a cross-sectional view showing a state in which the contact area of the heat pipe (mounting member) is changed with respect to the heat radiating member.
FIG. 6 is a cross-sectional view showing a closing member attached to the heat dissipation member.
FIG. 7 is a cross-sectional view showing a state in which the above-described closing member is attached to the above-described heat radiating member.
FIGS. 8A and 8B are cross-sectional views showing a modification of the heat conducting means.
FIG. 9 is a cross-sectional view showing a use state in a non-heating period in the heat conducting means same as above.
FIG. 10 is a cross-sectional view showing another modification of the heat conducting means.
FIG. 11 is a schematic configuration diagram showing a conventional heating system using a heat storage tank.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heating system 10 Thermal storage tank 11 Concrete layer 12 Heat insulation layer 13 Storage container 20 Heat collecting means 21 Solar collector 22a Outward piping 22b Return piping 23 Circulation pump 30 Heat conduction means 31, 31A Heat radiation member 32, 32A Cylindrical member 33 Tapered part 34 Straight part 34a Female thread 35, 35A Radiation fin 36 Heat pipe 36a, 36A Operation rod 37 Mounting member 37a Operation part 38 Taper part 39 Straight part 39a Male screw 40, 40A Closing member 40a Operation part 41 Taper part 42 Straight part 43 Closing part C House F Floor

Claims

A heat storage tank installed in the ground directly under the building to be heated,
At least at the time of non-heating, heat collecting means for collecting heat by storing a heat storage medium heated using heat obtained from an auxiliary heat source in the heat storage tank,
A heat conducting means for conducting heat stored in the heat storage tank to the floor of the building during heating ;
The heat conducting means is fixed to a metal heat radiating member embedded in the floor of the building, a heat pipe dipping the lower end side in a heat storage medium stored in the heat storage tank, and an upper end portion of the heat pipe. A metal mounting member for mounting the heat pipe to the heat radiating member,
The heat dissipating member has a tapered portion formed so that the inner peripheral surface gradually becomes larger in diameter toward the upper end side, and a straight having an internal thread formed on the inner peripheral surface, which is connected to the lower end side of the tapered portion. A cylindrical member having a portion,
The mounting member has a taper portion that fits into the taper portion of the cylindrical member, and a straight portion that is connected to the lower end side of the taper portion and has an external thread formed on the outer peripheral surface.
The mounting member is screwed into the straight portion of the cylindrical member so that the straight portion can contact and separate the outer peripheral surface of the tapered portion from the inner peripheral surface of the tapered portion of the cylindrical member. A heating system characterized by that.

A heat storage tank installed in the ground directly under the building to be heated,
At least at the time of non-heating, heat collecting means for collecting heat by storing a heat storage medium heated using heat obtained from an auxiliary heat source in the heat storage tank,
A heat conducting means for conducting heat stored in the heat storage tank to the floor of the building during heating;
The heat conduction means includes a metal heat radiating member embedded in the floor of the building, and a heat pipe that immerses the lower end side in a heat storage medium stored in the heat storage tank,
The heat dissipation member has a straight cylindrical member that is slidably inserted through the heat pipe,
The heating system is characterized in that an operating rod for raising and lowering the heat pipe inserted through the cylindrical member is connected to an upper end portion of the heat pipe .