JP3993668B2

JP3993668B2 - Temperature control method and apparatus for floor heating system

Info

Publication number: JP3993668B2
Application number: JP19195797A
Authority: JP
Inventors: 憲治波田
Original assignee: 長府工産株式会社
Priority date: 1997-07-01
Filing date: 1997-07-01
Publication date: 2007-10-17
Anticipated expiration: 2017-07-01
Also published as: JPH1122984A

Description

【０００１】
【発明の属する技術分野】
本発明は、床暖房システムの温度制御方法と装置に係り、より詳細には、部屋設定温度と熱媒戻り設定温度（床面温度）を、その時々の環境下で最適な設定温度にして床暖房制御することで、快適な温度環境が得られる床暖房システムの温度制御方法と装置に関する。
【０００２】
【従来の技術】
近年、床に熱源により熱交換された熱媒を循環させる熱媒循環用配管を床に配し、該熱媒循環用配管内を循環する熱媒体を通して温度を制御しながら床からの輻射により部屋を暖房する床暖房システムが注目を集めている。そして、このような床暖房システムは、通常、図５に示すように、床１に熱媒循環用配管２を埋設し、熱媒循環用配管２の熱媒供給側を熱媒循環ポンプ３を介して熱源４に接続すると共に、熱媒循環用配管２の熱媒戻り側を熱媒供給・停止操作用のバルブ５を介して熱源４に接続し、熱源４で熱交換（加熱）された熱媒を熱媒循環用配管２に循環供給し、該熱媒からの輻射熱により床１を通じて部屋を暖房する構成からなる。
【０００３】
ところで、この床暖房システムにおける室内温度制御方法、次のような２つの方法に大別することができる。すなわち、
▲１▼ 部屋温度コントローラを用いる方法
図５（ａ）に示すように、床暖房を行う部屋１に、部屋温度コントローラ６を設置して、部屋温度コントローラ６で部屋温度を検出し、該検出温度と部屋設定温度を比較して、該検出温度が低い場合は、バルブ５を開放して、熱媒循環ポンプ３を介して熱源４で熱交換された熱媒を熱媒循環用配管２に循環供給することで、部屋温度を上昇させ、該部屋温度が設定温度に到達すると、バルブ５を閉止して暖房を停止する方法である。
▲２▼ 熱媒戻り温度コントローラを用いる方法
図５（ｂ）に示すように、バルブ５と熱源４との間に熱媒戻り温度コントローラ７を設置し、放熱後、戻ってくる熱媒の温度を検出し、該熱媒温度と設定熱媒温度を比較して、この比較結果によりバルブ５の開放、閉止を行うことで部屋温度制御をする方法である。
【０００４】
【発明が解決しようとする課題】
しかし、上述したような床暖房の温度制御方法においては、次のような課題がある。
▲１▼ 部屋温度コントローラ６を用いる方法の場合
部屋温度は、外気温の上昇や陽射しの影響、補助熱源（ストーブやファンヒーター等）の影響により、一時的に設定温度を超えることがあるが、部屋温度コントローラ６が該温度を検出するとバルブ５が閉止され、この状態が暫く持続すると、床温度が低くなって足元が冷たくなる。そして、このような状態では、床暖房システムとしては不快適となる。ところで、この場合において、その後、前記影響がなくなってしまうと、部屋温度は急激に設定温度を下回っていき、バルブ５を再び開放して、熱媒の循環供給を行っても、床が冷えきっているため、部屋温度の下降を食い止めることが難しい。
▲２▼ 熱媒戻り温度コントローラを用いる方法の場合
放熱した熱媒の戻り温度を検出することで部屋温度を制御するので、部屋温度コントローラ６を用いる方法の場合と異なり、外気温の上昇や陽射しの影響等によって部屋温度が上昇しても、熱媒戻り温度が熱媒設定温度より上昇しない限りバルブ５は開放状態のままであるので、該部屋温度が必要以上に上昇することになる。従って、快適な床暖房システムを得ることができない。
このように、前述した従来の床暖房の温度制御方法にあっては、部屋温度を設定温度に維持することが難しく、また、急激な温度変化に対応することができないという課題がある。
本発明者のこのような課題に鑑み、種々研究・試験をした結果、床暖房システムにおいては、部屋温度と熱媒温度を制御することによって得られる床面温度の相関関係に着目し、部屋温度と床温度（熱媒戻り温度）をその時々の環境下で最適な温度を選択して床暖房制御することで、快適な温度環境が得られることを究明した。
【０００５】
本発明は、上述した観点に立脚して創作したものであって、その目的とする処は、外気温の上昇や陽射しの影響等によって部屋温度が急激に変化しても、その影響を最小限にでき、かつ該温度変化にすばやく対応でき、該快適な温度環境を維持できる床暖房システムの温度制御方法と装置を提供することにある。
【０００６】
【課題を解決するための手段】
そして、上記目的を達成するための手段としての本発明の床暖房システムの温度制御方法は、熱源により熱交換された熱媒を循環させる熱媒循環用配管を床に配し、該熱媒循環用配管内を循環する前記熱媒を通して温度を制御しながら前記床からの輻射により部屋を暖房する床暖房システムの温度制御方法において、前記熱媒循環用配管の前記熱媒を循環させる熱媒循環ポンプと、前記熱媒循環用配管の戻り管から前記熱源への前記熱媒の戻り量を制御する熱媒供給・停止操作用バルブと、前記部屋の部屋温度を検出する部屋温度センサーと、前記熱源、前記熱媒循環ポンプ、および前記熱媒供給・停止操作用バルブとともに前記部屋の外部に配置された前記戻り管において前記熱媒供給・停止操作用バルブと前記熱源との間に介在されて、前記熱媒循環用配管内を循環する前記熱媒の前記熱源への戻り温度を検出する戻り熱媒温度センサーと、前記熱媒循環ポンプおよび前記熱媒供給・停止操作用バルブの開閉を制御する制御手段と、を有し、前記熱媒供給・停止操作用バルブをＯＮの状態にして、前記熱媒循環ポンプを作動させて、前記熱源で熱交換して加熱した熱媒を前記熱媒循環用配管に供給循環し、部屋温度を上昇させているときに、部屋検出温度が、部屋設定温度を上回った場合には、該部屋検出温度の上昇温度幅に応じて、熱媒戻り設定温度の温度下げ幅を変更し、該熱媒戻り設定温度を下げるとともに、前記戻り熱媒温度センサーで検出される熱媒戻り検出温度が、設定した熱媒戻り設定温度よりも低くなるように前記熱媒供給・停止操作用バルブをＯＦＦの状態にして熱媒の循環を停止させて部屋温度の上昇を抑制するように温度制御し、前記部屋温度が、部屋設定温度より低い場合には、前記熱媒供給・停止操作用バルブをＯＮにして前記熱媒戻り検出温度が熱媒戻り設定温度になるように温度制御することを特徴とする。
また、本発明の床暖房システムの温度制御方法は、熱源により熱交換された熱媒を循環させる熱媒循環用配管を床に配し、該熱媒循環用配管内を循環する前記熱媒を通して温度を制御しながら前記床からの輻射により部屋を暖房する床暖房システムの温度制御方法において、前記熱媒循環用配管の前記熱媒を循環させる熱媒循環ポンプと、前記熱媒循環用配管の戻り管から前記熱源への前記熱媒の戻り量を制御する熱媒供給・停止操作用バルブと、前記部屋温度を検出する部屋温度センサーと、前記熱源、前記熱媒循環ポンプ、および前記熱媒供給・停止操作用バルブとともに前記部屋の外部に配置された前記戻り管において前記熱媒供給・停止操作用バルブと前記熱源との間に介在されて、前記熱媒循環用配管内を循環する前記熱媒の前記熱源への戻り温度を検出する戻り熱媒温度センサーと、前記熱媒循環ポンプおよび前記熱媒供給・停止操作用バルブの開閉を制御する制御手段と、を有し、前記部屋温度センサーによる部屋温度、または該部屋温度センサーによる部屋温度と該戻り熱媒温度センサーによる熱媒戻り温度の両温度の検出を行う制御工程と、前記部屋温度が部屋設定温度（Ｒ_s）℃に到達していない場合、前記熱媒供給・停止操作用バルブを開放にして、前記部屋温度センサーが部屋設定温度（Ｒ_s）℃を検出するまで、前記熱源により熱交換された前記熱媒を前記熱媒循環用配管に循環させて、前記部屋温度を上昇させる制御工程と、前記部屋温度が部屋設定温度（Ｒ_s）℃に到達すると、前記戻り熱媒温度センサーによる熱媒戻り温度の検出を行って、該熱媒戻り温度を熱媒戻り設定温度（Ｍ_s）℃に維持させるように前記熱媒供給・停止操作用バルブの開放と閉止を繰り返して前記熱媒を循環供給・循環停止を繰り返す制御工程と、前記熱媒供給・停止操作用バルブの開放と閉止を繰り返して熱媒を循環供給・循環停止を繰り返す制御工程において、前記部屋温度センサーが部屋設定温度（Ｒ_s）℃を下回る部屋温度を検出すると前記部屋温度を上昇させる制御工程に戻り、また、前記部屋温度センサーが部屋設定温度（Ｒ_s）℃を上回る部屋温度を検出すると熱媒戻り設定温度（Ｍ_s）℃を下げる制御工程と、前記熱媒戻り設定温度（Ｍ_s）℃を下げる制御工程において、前記熱媒戻り設定温度（Ｍ_s）℃を下げた状態で、部屋温度センサーが部屋設定温度（Ｒ_s）℃を上回る部屋温度を検出し、該部屋検出温度が、温度（Ｒ_s＋α）℃であるとすると、その上昇幅（α）℃に応じて、前記熱媒供給・停止操作用バルブを閉止して熱媒の循環を停止したときに戻り熱媒温度センサーで検出した熱媒戻り検出温度が、温度（Ｍ_s−β）℃であるとすると、その下げ幅（β）を変更し、該熱媒戻り設定温度を下げるように制御し、また、前記部屋温度センサーが温度（Ｒ_s＋α）℃を下回る部屋温度を検出すると、前記熱媒戻り設定温度を上げるように制御する工程と、を有することを特徴とする。
また、本発明の床暖房システムの温度制御装置は、熱源により熱交換された熱媒を循環させる熱媒循環用配管を床に配し、該熱媒循環用配管内を循環する前記熱媒を通して温度を制御しながら前記床からの輻射により部屋を暖房する床暖房システムの温度制御装置において、前記熱媒循環用配管の前記熱媒を循環させる熱媒循環ポンプと、前記熱媒循環用配管の戻り管から前記熱源への前記熱媒の戻り量を制御する熱媒供給・停止操作用バルブと、前記部屋の部屋温度を検出する部屋温度センサーと、前記熱源、前記熱媒循環ポンプ、および前記熱媒供給・停止操作用バルブとともに前記部屋の外部に配置された前記戻り管において前記熱媒供給・停止操作用バルブと前記熱源との間に介在されて、前記熱媒循環用配管内を循環する前記熱媒の前記熱源への戻り温度を検出する戻り熱媒温度センサーと、前記熱媒循環ポンプおよび前記熱媒供給・停止操作用バルブの開閉を制御する制御手段と、を有し、前記制御手段は、前記熱媒供給・停止操作用バルブをＯＮの状態にして、前記熱媒循環ポンプを作動させて、前記熱源で熱交換して加熱した熱媒を前記熱媒循環用配管に供給循環し、部屋温度を上昇させているときに、部屋検出温度が、部屋設定温度を上回った場合には、該部屋検出温度の上昇温度幅に応じて、熱媒戻り設定温度の温度下げ幅を変更し、該熱媒戻り設定温度を下げるとともに、前記戻り熱媒温度センサーで検出される熱媒戻り検出温度が、設定した熱媒戻り設定温度よりも低くなるように前記熱媒供給・停止操作用バルブをＯＦＦの状態にして熱媒の循環を停止させて部屋温度の上昇を抑制するように温度制御し、前記部屋温度が、部屋設定温度より低い場合には、前記熱媒供給・停止操作用バルブをＯＮにして前記熱媒戻り検出温度が熱媒戻り設定温度になるように温度制御することを特徴とする。
【０００７】
ここで、前記熱媒としては、有機質や無機質の化合物を含んでなる熱媒、温水、蒸気、熱風等を用いることができる。コストおよび熱容量の大きなことから温水、または蒸気が好ましい。また、前記部屋温度センサー、戻り熱媒温度センサーとしては、サーミスタ式センサー、熱放射式センサー、シース形測温抵抗体その他の温度センサーを用いることができる。また、前記部屋温度センサーは、部屋で、外気温その他の外乱による影響が少なく、部屋内の平均的温度を検出する個所に設けることが好ましい。しかし、床面等に設置することもできる。何れの位置・個所に設置するにしても、該個所における設定温度を用いることで、所定の部屋温度に維持できる。また、前記バルブの閉止には、完全な閉止状態の他に、熱媒の循環量を少なくした状態を含む。更に、前記部屋設定温度、熱媒戻り設定温度には、予め設定した温度で、一定の幅をもった温度域を含む。なお、前記熱媒戻り温度の検出は、熱媒に直接接触させるものの他に、該センサーを戻り管に接触させたり、また配管が設けてある床に配することで直接あるいは間接的に行うものを含む。該戻り設定温度も、この熱媒戻り温度の検出する個所、あるいは方法での温度に対応させている。
【０００８】
【発明の効果】
以上の説明から明らかなように、本発明の床暖房システムの温度制御方法と装置によれば、部屋温度と熱媒戻り温度を検出し、該検出温度により、熱媒の循環供給を司るバルブの開閉を行い、また部屋設定温度、熱媒戻り設定温度を変更することで、温度制御を行っているので、外気温の上昇や陽射しの影響等によって部屋温度が急激に変化しても、その影響を最小限にでき、かつ該温度変化にすばやく対応でき、該部屋温度を快適環境温度に維持できるという効果を有する。また、前記熱媒戻り温度を予め定めた下限温度に保持させて熱媒の循環を行うので、外気温等の外乱による部屋温度の急激な変化にすばやく対応することができるという効果を有する。
このように、本発明によれば、床温度が冷たくなって足元が冷たくなることがなく、部屋を常に快適空間に維持することができる床暖房システムの温度制御方法と装置を提供することができる。
【０００９】
【発明の実施の形態】
以下、図面を参照しながら、本発明を具体化した好ましい実施の形態について説明する。ここに、図１〜図５は本発明の一実施形態を示し、図１は本実施形態に用いる床暖房システムの説明図、図２、３は本実施形態のフローチャート、図４は本実施形態における部屋温度の温度変化を説明するためのデータ図である。なお、本発明は、後述する実施形態に限定されるものでなく、本発明の主旨を逸脱しない範囲内で変形実施できるものを含む。
【００１０】
本実施形態の温度制御方法を適用する床暖房システムは、図１に示すように、暖房する部屋１０の床１１に埋設した熱媒循環用配管１２と、この熱媒循環用配管１２に供給する熱媒を熱交換して加熱する熱源１３と、熱媒循環用配管１２の熱媒を強制循環させる熱媒循環ポンプ１４と、熱媒循環用配管１２からの戻り熱媒の熱媒供給・停止操作用バルブ１５と、前記部屋１０の部屋温度を検出する部屋温度検出センサー１６と、前記戻り熱媒の温度を検出する戻り熱媒温度センサー１７、および熱媒供給・停止操作用バルブ１５の開閉を制御する制御ボックス１８を備えている。
【００１１】
熱媒循環用配管１２は、床１１を形成するコンクリートや床材に埋設されていて、通常、熱伝導性の良好な銅管、アルミ管等で形成してある。熱源１３は、ガスボイラー、電気ボイラー、その他の熱交換器を用い、この熱源１３によって、熱媒循環用配管１２を循環する熱伝導性の良好な液体やガスを用いることができる。熱媒循環ポンプ１４としては、一般的なポンプを用いることができ、また熱媒供給・停止操作用バルブ１５としては、一般的な開閉制御弁を用いることができる。部屋温度検出センサー１６、戻り熱媒温度センサー１７としては、通常、取り扱い、価格等の観点からサーミスタを用いることができる。
【００１２】
また、熱媒循環ポンプ１４は、熱源１３と熱媒循環用配管１２を連結する供給管１２ａ部分に設けてあり、熱媒供給・停止操作用バルブ１５は、熱源１３と熱媒循環用配管１２を連結する戻り管１２ｂ部分に設けてある。また、部屋温度検出センサー１６は、暖房する部屋１０の部屋温度を検出するのに適した部屋壁面あるいは床に設けてあり、戻り熱媒温度センサー１７は、戻り管１２ｂに設けてある。制御ボックス１８は、部屋設定温度（Ｒ_s）℃や熱媒戻り設定温度（Ｍ_s）℃、あるいは変更した部屋制御温度（Ｒ_s±α）℃や熱媒戻り制御温度（Ｍ_s−β）℃と、部屋温度センサー１６で検出した検出温度（ＲＴＨ）℃、戻り熱媒温度センサー１７で検出した戻り熱媒検出温度（ＭＴＨ）℃を、プログラムに基づき比較演算し、熱媒循環ポンプ１４、熱媒供給・停止操作用バルブ１５を制御するための制御装置を内蔵し、また、該制御装置には、必要に応じてタイマー（図示せず）を有している。
【００１３】
次に、上述した床暖房システムに基づいて、本実施形態の温度制御方法と装置を、図２、３に示すフローチャートにより説明する。本実施形態の制御方法と装置は、図２、３に示すように、モード０〜モード１３の制御工程を有する。床暖房システムを作動させるに際し、まず、準備段階として、制御ボックス１８に内蔵してある制御装置を作動状態とすると共に、部屋設定温度（Ｒ_s）℃と熱媒戻り設定温度（Ｍ_s）℃を設定し、更に、タイマーをＯＮにする。
−モード０〜１工程−
本制御工程は、床暖房立ち上げ工程であって、熱媒供給・停止操作用バルブ１５をＯＦＦの状態にして、部屋温度検出センサー１６により部屋温度を検出し、該部屋検出温度（ＲＴＨ）℃が、温度（Ｒ_s−１）℃より低い場合、あるいは該温度（Ｒ_s−１）℃以上の場合であっても戻り熱媒温度センサー１７により検出した熱媒戻り検出温度（ＭＴＨ）℃が、温度（Ｍ_s−２）℃より低い場合は、更に、該部屋検出温度（ＲＴＨ）℃が、１０℃より低いか否を比較する。そして、この部屋検出温度（ＲＴＨ）℃が、１０℃より低いか高いかを比較検出して、次の制御工程に移る。
−モード２〜３工程−
本制御工程は、制御装置により、熱媒供給・停止操作用バルブ１５をＯＮの状態にして、熱媒循環ポンプ１４を作動させて、熱源１３で熱交換して加熱した熱媒を熱媒循環用配管１２に供給循環し、部屋温度を上昇させる工程であって、前記工程において、部屋検出温度（ＲＴＨ）℃が、１０℃より低い場合は、部屋温度検出センサー１６により部屋温度を検出し、該部屋温度が部屋設定温度（Ｒ_s）℃以上の温度になるまで、床暖房を行い（モード２参照）、また、部屋検出温度（ＲＴＨ）℃が、１０℃以上の場合は、まず、部屋検出温度（ＲＴＨ）℃が部屋設定温度（Ｒ_s）℃以上、または戻り熱媒温度センサー１７により熱媒戻り温度を検出し、熱媒戻り検出温度（ＭＴＨ）℃が熱媒戻り設定温度（Ｍ_s）℃以上になるまで、床暖房を行う（モード３参照）。このように前記温度が１０℃以上の場合は、検出した部屋検出温度（ＲＴＨ）℃が、部屋設定温度（Ｒ_s）℃より低くても、熱媒戻り検出温度（ＭＴＨ）℃が熱媒戻り設定温度（Ｍ_s）℃以上になっていると、部屋温度は、間もなく部屋設定温度（Ｒ_s）℃に到達し、部屋検出温度（ＲＴＨ）℃が部屋設定温度（Ｒ_s）℃以上になるまで待っていると、部屋温度が部屋設定温度（Ｒ _s ）℃以上に上昇してしまい暖房し過ぎになることを考慮したものである。
−モード４〜５工程−
本制御工程は、前記工程により、部屋温度が上昇して、部屋設定温度（Ｒ _s ）℃以上になると、該部屋温度を下げるための制御工程である。前記モード３において、部屋設定温度（Ｒ_s）℃、あるいは熱媒戻り設定温度（Ｍ_s）℃以上になると、制御装置により、熱媒供給・停止操作用バルブ１５をＯＦＦの状態にして、また熱媒循環ポンプ１４を停止させることで、床暖房を停止し、戻り熱媒温度センサー１７により検出した熱媒戻り検出温度（ＭＴＨ）℃が、温度（Ｍ_s−５）℃より低く、しかも部屋温度検出センサー１６により検出した部屋温度が、部屋設定温度（Ｒ _s）℃より低くなるまで、この状態を維持する。そして、該部屋温度が、部屋設定温度（Ｒ _s）℃より低くなった場合は、前記モード２に戻り、床暖房を再開するように制御する（モード４、モード５参照）。これは、熱媒戻り温度が放熱によって低くなっていても外気温や他の熱源等の外乱によって、部屋温度が部屋設定温度（Ｒ _s）℃となっていることを考慮したものである。
−モード６工程−
本工程は、前記制御工程において、熱媒戻り検出温度（ＭＴＨ）℃が、温度（Ｍ_s−５）℃より低くても、部屋温度検出センサー１６により検出した部屋温度が、部屋設定温度（Ｒ _s）℃以上の場合に対処し、部屋温度を部屋設定温度（Ｒ _s ）℃に維持するための制御工程である。このように、部屋温度が、部屋設定温度（Ｒ_s）℃以上の場合は、床暖房する必要がないので、熱媒供給・停止操作用バルブ１５をＯＦＦの状態にしておき、部屋検出温度（ＲＴＨ）℃が、温度（Ｒ_s＋１）℃より低くなるまで部屋温度を下降させる（モード６参照）。これにより、部屋温度が部屋設定温度（Ｒ _s ）℃に維持できるように、自動的に部屋設定温度（Ｒ _s ）℃あるいは熱媒戻り設定温度（Ｍ _s ）℃を調整することができる。
−モード７〜１３工程−
本工程は、前記工程において、熱媒戻り設定温度（Ｍ _s ）℃を下降させた状態で、部屋温度検出センサー１６が部屋設定温度（Ｒ_s ）を上回る部屋温度を検出し、部屋検出温度（ＲＴＨ）℃が、温度（Ｒ_s＋α）℃とすると、その上昇幅（α）℃に応じて、熱媒戻り検出温度（ＭＴＨ）℃が、温度（Ｍ_s−β）℃とすると、その下げ幅（β）を変更し、該熱媒戻り設定温度（Ｍ _s ）℃を下降させるように制御し、また、前記部屋温度検出センサー１６が温度（Ｒ_s＋α）℃を下回る部屋温度を検出すると、前記熱媒戻り設定温度（Ｍ _s ）℃を上昇させるように制御する工程である。すなわち、モード６工程において、部屋検出温度（ＲＴＨ）℃が、温度（Ｒ_s＋１）℃より低い場合、熱媒供給・停止操作用バルブ１５をＯＮにして、熱媒戻り検出温度（ＭＴＨ）℃が、温度（Ｍ_s）℃になるまで床暖房を行い、温度（Ｍ_s）℃以上になると、モード４工程に戻り、該モード４からの制御を繰り返すことで、部屋温度を部屋設定温度（Ｒ _s ）℃に維持する（モード７参照）。また熱媒戻り検出温度（ＭＴＨ）℃が、温度（Ｍ_s−１０）℃より低い場合は、熱媒供給・停止操作用バルブ１５をＯＦＦにして、部屋検出温度（ＲＴＨ）℃が、温度（Ｒ_s＋２）℃になるまで、部屋温度を下降させ（モード８参照）、温度（Ｒ_s＋２）℃より低くなると、熱媒供給・停止操作用バルブ１５をＯＮにして、熱媒戻り検出温度（ＭＴＨ）℃が、温度（Ｍ_s−５）℃より高くなるまで床暖房を行う。そして、熱媒戻り検出温度（ＭＴＨ）℃が、温度（Ｍ_s−５）℃以上になると、モード６工程に戻り、該モード６からの制御を繰り返す（モード９参照）。なお、熱媒戻り検出温度（ＭＴＨ）℃が、温度（Ｍ_s−１５）℃より低い場合は、部屋検出温度（ＲＴＨ）℃が、温度（Ｒ_s＋３）℃より低くなるまで、床暖房を停止した状態を維持し、部屋検出温度（ＲＴＨ）℃が、温度（Ｒ_s＋３）℃より低くなると、再び、床暖房を再開し、熱媒戻り検出温度（ＭＴＨ）℃が、温度（Ｍ_s−１０）℃より低くなるまで床暖房を行う（モード１０〜１１参照）。このようにして、以下、順次、モード１１〜１３の制御を行う。
【００１４】
そして、上述した実施形態の床暖房システムについて、２０坪のコンクリート製の建築物の一室で、温度変化を調べた処、図４、５に示すようなデータを得ることかできた。このデータから判るように、床暖房立ち上がり後においては、部屋検出温度は、部屋設定温度領域を常に維持できることが確認できた。このように、本実施形態の温度制御方法・装置によれば、部屋温度と戻り熱媒温度の両者で、熱媒供給・停止操作用バルブの開閉を制御していることで、部屋温度が外気温その他の外乱の影響を受けて、変化をする場合に、素早く対応することができることが確認できる。すなわち、本実施形態の制御システムによれば、部屋温度と床温度（熱媒戻り温度）を、そのときどきの環境下で最適な設定温度を選択して制御運転しているので、常に、快適な床暖房環境を得ることかできる。
【図面の簡単な説明】
【図１】本発明の一実施形態を示す床暖房システムの説明図である。
【図２】本実施形態のフローチャートである。
【図３】本実施形態のフローチャートである。
【図４】本実施形態における部屋温度の温度変化を説明するためのデータ図である。
【図５】従来例の床暖房システムの説明図である。
【符号の説明】
１０暖房する部屋
１１床
１２熱媒循環用配管
１３熱源
１４熱媒循環ポンプ
１５戻り熱媒の熱媒供給・停止操作用バルブ（バルブ）
１６部屋温度検出センサー（部屋温度センサー）
１７戻り熱媒温度センサー
１８制御ボックス（制御手段）
１２ａ供給管
１２ｂ戻り管[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a temperature control method and apparatus for a floor heating system. More specifically, the present invention relates to a room setting temperature and a heating medium return setting temperature (floor surface temperature) that are set to optimum setting temperatures in the current environment. The present invention relates to a temperature control method and apparatus for a floor heating system in which a comfortable temperature environment can be obtained by heating control.
[0002]
[Prior art]
In recent years, a heating medium circulation pipe that circulates a heat medium heat-exchanged by a heat source to the floor is arranged on the floor, and the room is radiated from the floor while controlling the temperature through the heating medium circulating in the heating medium circulation pipe. The floor heating system that heats the room is attracting attention. In such a floor heating system, normally, as shown in FIG. 5, the heat medium circulation pipe 2 is embedded in the floor 1, and the heat medium supply side of the heat medium circulation pipe 2 is connected to the heat medium circulation pump 3. The heat medium return pipe 2 is connected to the heat source 4 via the heat medium supply / stop valve 5 and the heat source 4 is used for heat exchange (heating). The heat medium is circulated and supplied to the heat medium circulation pipe 2, and the room is heated through the floor 1 by radiant heat from the heat medium.
[0003]
By the way, the room temperature control method in this floor heating system can be roughly divided into the following two methods. That is,
(1) Method using room temperature controller As shown in FIG. 5A, a room temperature controller 6 is installed in a room 1 where floor heating is performed, and the room temperature controller 6 detects the room temperature, and the detected temperature. If the detected temperature is low, the valve 5 is opened and the heat medium exchanged by the heat source 4 through the heat medium circulation pump 3 is circulated to the heat medium circulation pipe 2. This is a method in which the room temperature is raised by supplying, and when the room temperature reaches a set temperature, the valve 5 is closed to stop heating.
(2) Method using the heating medium return temperature controller As shown in FIG. 5B, a heating medium return temperature controller 7 is installed between the valve 5 and the heat source 4, and the temperature of the heating medium that returns after radiating heat. Is detected, the heat medium temperature is compared with the set heat medium temperature, and the room temperature is controlled by opening and closing the valve 5 based on the comparison result.
[0004]
[Problems to be solved by the invention]
However, the floor heating temperature control method as described above has the following problems.
(1) In the case of the method using the room temperature controller 6, the room temperature may temporarily exceed the set temperature due to the rise of outside air temperature, the influence of sunlight, and the influence of auxiliary heat sources (stove, fan heater, etc.) When the room temperature controller 6 detects the temperature, the valve 5 is closed. When this state continues for a while, the floor temperature becomes low and the feet become cold. And in such a state, it becomes uncomfortable as a floor heating system. By the way, in this case, if the influence disappears thereafter, the room temperature suddenly falls below the set temperature, and even if the valve 5 is opened again and the circulation of the heat medium is performed, the floor is cooled down. Therefore, it is difficult to prevent the room temperature from falling.
(2) In the case of the method using the heating medium return temperature controller Since the room temperature is controlled by detecting the return temperature of the radiated heat medium, unlike the method using the room temperature controller 6, the outside temperature rises or is exposed to sunlight. Even if the room temperature rises due to the influence of the above, etc., the valve 5 remains open unless the return temperature of the heat medium rises above the set temperature of the heat medium, so that the room temperature rises more than necessary. Therefore, a comfortable floor heating system cannot be obtained.
As described above, in the conventional temperature control method for floor heating described above, there is a problem that it is difficult to maintain the room temperature at the set temperature and it is impossible to cope with a rapid temperature change.
In view of such problems of the present inventors, as a result of various studies and tests, in the floor heating system, paying attention to the correlation between the floor temperature obtained by controlling the room temperature and the heating medium temperature, the room temperature It was clarified that a comfortable temperature environment can be obtained by controlling the floor heating by selecting the optimum temperature and the floor temperature (heating medium return temperature) under the circumstances.
[0005]
The present invention was created based on the above-mentioned viewpoint, and the intended process is to minimize the influence of a sudden change in room temperature due to an increase in outside air temperature or the influence of sunlight. It is an object of the present invention to provide a temperature control method and apparatus for a floor heating system that can be quickly adjusted to the temperature change and can maintain the comfortable temperature environment.
[0006]
[Means for Solving the Problems]
And the temperature control method of the floor heating system of the present invention as a means for achieving the above object comprises arranging a heat medium circulation pipe for circulating the heat medium heat-exchanged by the heat source on the floor, the heat medium circulation In the temperature control method of a floor heating system for heating a room by radiation from the floor while controlling the temperature through the heat medium circulating in the pipe for heating, the heat medium circulation for circulating the heat medium in the heat medium circulation pipe A pump, a heat medium supply / stop valve for controlling the return amount of the heat medium from the return pipe of the heat medium circulation pipe to the heat source, a room temperature sensor for detecting the room temperature of the room, The return pipe disposed outside the room together with the heat source, the heat medium circulation pump, and the heat medium supply / stop operation valve is interposed between the heat medium supply / stop operation valve and the heat source. , Controls opening and closing of a return heat medium temperature sensor for detecting a return temperature of the heat medium circulating in the heat medium circulation pipe to the heat source, and the heat medium circulation pump and the heat medium supply / stop operation valve. Control means, and the heating medium supply / stop operation valve is turned on, the heating medium circulation pump is operated, and the heating medium is heated by exchanging heat with the heat source. When the room detection temperature exceeds the room set temperature when the room temperature is increased by supplying and circulating to the piping for the heating, the heating medium return set temperature is changed according to the temperature increase range of the room detection temperature. The temperature reduction range is changed to lower the heat medium return set temperature, and the heat medium return detection temperature detected by the return heat medium temperature sensor is lower than the set heat medium return set temperature. state of OFF the supply and stop operation for valves Then, temperature control is performed to stop the circulation of the heat medium to suppress the rise in the room temperature, and when the room temperature is lower than the room set temperature, the heat medium supply / stop operation valve is turned on. Temperature control is performed so that the heat medium return detection temperature becomes a heat medium return set temperature.
The temperature control method for a floor heating system according to the present invention includes a heat medium circulation pipe for circulating a heat medium exchanged by a heat source on the floor, and passes through the heat medium circulating in the heat medium circulation pipe. In a temperature control method of a floor heating system for heating a room by radiation from the floor while controlling temperature, a heat medium circulation pump for circulating the heat medium in the heat medium circulation pipe, and a heat medium circulation pipe A heat medium supply / stop valve for controlling the return amount of the heat medium from a return pipe to the heat source, a room temperature sensor for detecting the room temperature, the heat source, the heat medium circulation pump, and the heat medium The return pipe arranged outside the room together with the supply / stop operation valve is interposed between the heat medium supply / stop operation valve and the heat source, and circulates in the heat medium circulation pipe. The heating medium A return heat medium temperature sensor for detecting a return temperature to the source, and a control means for controlling opening and closing of the heat medium circulation pump and the heat medium supply / stop operation valve, and the room temperature by the room temperature sensor Or a control step for detecting both the room temperature by the room temperature sensor and the heat medium return temperature by the return heat medium temperature sensor, and the room temperature does not reach the room set temperature (R _s ) ° C. The heating medium supply / stop operation valve is opened, and the heat medium exchanged by the heat source is used for the heating medium circulation pipe until the room temperature sensor detects a room set temperature (R _s ) ° C. It was circulated in the control step of raising the room temperature, when the room temperature reaches the room temperature setting (R _s) ° C., by performing the return heat medium temperature sensor heating medium return detection of temperature by, heat A control step of return temperature to repeat the opening and closing of the valve for heating medium supply and stop operating so as to maintain the heating medium return set temperature (M _s) ° C. circulation is repeated supply and circulation stops the heating medium, wherein When the room temperature sensor detects a room temperature below a room set temperature (R _s ) ° C. in the control process of repeatedly supplying and stopping the circulation of the heat medium by repeatedly opening and closing the heating medium supply / stop operation valve, Returning to the control step for raising the room temperature, and when the room temperature sensor detects a room temperature exceeding the room set temperature (R _s ) ° C., the control step for lowering the heat medium return set temperature (M _s ) ° C., in medium return set temperature (M _s) control step of lowering ° C., at reduced the heat medium return set temperature (M _s) ℃, room temperature sensor room set temperature (R _s) ° C. the detecting room temperature above Shi Assuming that the room detection temperature is temperature (R _s + α) ° C., the heating medium supply / stop operation valve is closed according to the increase width (α) ° C. to stop the circulation of the heating medium. If the return temperature of the heat medium detected by the return heat medium temperature sensor is temperature (M _s −β) ° C., the lowering width (β) is changed to lower the heat medium return set temperature. And, when the room temperature sensor detects a room temperature lower than a temperature (R _s + α) ° C., it controls to increase the heating medium return set temperature.
Further, the temperature control device for a floor heating system according to the present invention includes a heat medium circulation pipe that circulates the heat medium exchanged by a heat source on the floor, and passes through the heat medium that circulates in the heat medium circulation pipe. In a temperature control device of a floor heating system that heats a room by radiation from the floor while controlling the temperature, a heat medium circulation pump that circulates the heat medium in the heat medium circulation pipe, and a heat medium circulation pipe A heating medium supply / stop valve for controlling the return amount of the heating medium from a return pipe to the heat source, a room temperature sensor for detecting a room temperature of the room, the heat source, the heating medium circulation pump, and the The return pipe disposed outside the room together with the heating medium supply / stop operation valve is interposed between the heating medium supply / stop operation valve and the heat source, and circulates in the heating medium circulation pipe. The heating medium A return heat medium temperature sensor for detecting a return temperature to the heat source; and a control means for controlling opening and closing of the heat medium circulation pump and the heat medium supply / stop operation valve. Turn on the heating medium supply / stop operation valve, operate the heating medium circulation pump, supply and circulate the heated heating medium by exchanging heat with the heat source, and the room temperature. If the room detection temperature exceeds the room set temperature while the temperature is being increased, the temperature decrease range of the heating medium return set temperature is changed according to the rise temperature range of the room detection temperature, and the heat OFF with lowering the medium return set temperature, the return heat medium temperature sensor heat medium detected by the return detected temperature, the heating medium supply and stop operation for valves to be lower than the set temperature return heat transfer medium set Stop circulating the heat medium in the state of If the room temperature is lower than the set room temperature, the heating medium supply / stop operation valve is turned ON and the heating medium return detection temperature is The temperature control is performed so that the medium return set temperature is reached.
[0007]
Here, as the heating medium, a heating medium containing an organic or inorganic compound, hot water, steam, hot air, or the like can be used. Hot water or steam is preferred because of its large cost and heat capacity. Further, as the room temperature sensor and the return heat medium temperature sensor, a thermistor type sensor, a heat radiation type sensor, a sheath type resistance temperature detector and other temperature sensors can be used. In addition, the room temperature sensor is preferably provided in a room where the influence of external temperature and other disturbances is small and an average temperature in the room is detected. However, it can be installed on the floor or the like. Even in the installed in any position and location, by using the set temperature in the individual stations can be maintained at a predetermined room temperature. Further, the closing of the valve includes not only a completely closed state but also a state in which the circulation amount of the heat medium is reduced. Furthermore, the room set temperature and the heat medium return set temperature include a temperature range having a predetermined width at a preset temperature. The detection of the return temperature of the heating medium is performed directly or indirectly by bringing the sensor into contact with the return pipe or by placing it on the floor where the piping is provided, in addition to the direct contact with the heating medium. including. The return set temperature is also made to correspond to the temperature or temperature at which the heat medium return temperature is detected.
[0008]
【The invention's effect】
As is apparent from the above description, according to the temperature control method and apparatus of the floor heating system of the present invention, the room temperature and the heating medium return temperature are detected, and the detected temperature controls the circulation of the heating medium. The temperature is controlled by opening and closing and changing the room temperature setting and the heat medium return temperature setting, so even if the room temperature changes suddenly due to the rise of outside air temperature or the influence of sunlight, the effect Can be minimized, can respond quickly to the temperature change, and can maintain the room temperature at a comfortable environmental temperature. Further, since the heating medium is circulated while the heating medium return temperature is maintained at a predetermined lower limit temperature, it is possible to quickly cope with a sudden change in the room temperature due to a disturbance such as an outside air temperature.
As described above, according to the present invention, it is possible to provide a temperature control method and apparatus for a floor heating system that can always maintain a room in a comfortable space without the floor temperature becoming cold and the feet getting cold. .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. 1 to 5 show an embodiment of the present invention, FIG. 1 is an explanatory diagram of a floor heating system used in the present embodiment, FIGS. 2 and 3 are flowcharts of the present embodiment, and FIG. 4 is the present embodiment. It is a data figure for demonstrating the temperature change of the room temperature in. In addition, this invention is not limited to embodiment mentioned later, The thing which can be deform | transformed within the range which does not deviate from the main point of this invention is included.
[0010]
As shown in FIG. 1, the floor heating system to which the temperature control method of the present embodiment is applied supplies the heat medium circulation pipe 12 embedded in the floor 11 of the room 10 to be heated, and the heat medium circulation pipe 12. Heat source 13 that heats and heats the heat medium, heat medium circulation pump 14 that forcibly circulates the heat medium in the heat medium circulation pipe 12, and supply / stop of the heat medium for the return heat medium from the heat medium circulation pipe 12 Opening and closing of the operation valve 15, the room temperature detection sensor 16 for detecting the room temperature of the room 10, the return heat medium temperature sensor 17 for detecting the temperature of the return heat medium, and the heat medium supply / stop operation valve 15. A control box 18 is provided for controlling the above.
[0011]
The heat medium circulation pipe 12 is embedded in the concrete or floor material forming the floor 11 and is usually formed of a copper pipe, an aluminum pipe or the like having a good thermal conductivity. As the heat source 13, a gas boiler, an electric boiler, or other heat exchanger is used, and by this heat source 13, it is possible to use a liquid or gas having good thermal conductivity that circulates through the heat medium circulation pipe 12. As the heat medium circulation pump 14, a general pump can be used, and as the heat medium supply / stop operation valve 15, a general opening / closing control valve can be used. As the room temperature detection sensor 16 and the return heat medium temperature sensor 17, a thermistor can be usually used from the viewpoint of handling, price, and the like.
[0012]
The heat medium circulation pump 14 is provided in a supply pipe 12a portion connecting the heat source 13 and the heat medium circulation pipe 12, and the heat medium supply / stop operation valve 15 is provided in the heat source 13 and the heat medium circulation pipe 12. Are provided on the return pipe 12b. The room temperature detection sensor 16 is provided on a room wall or floor suitable for detecting the room temperature of the room 10 to be heated, and the return heat medium temperature sensor 17 is provided on the return pipe 12b. The control box 18 includes a room set temperature (R _s ) ° C. and a heat medium return set temperature (M _s ) ° C., or a changed room control temperature (R _s ± α) ° C. and a heat medium return control temperature (M _s −β). And a return heat medium detection temperature (MTH) ° C. detected by the return heat medium temperature sensor 17 are compared and calculated based on the program, and the heat medium circulation pump 14, A control device for controlling the heating medium supply / stop operation valve 15 is incorporated, and the control device has a timer (not shown) as necessary.
[0013]
Next, based on the floor heating system described above, the temperature control method and apparatus of the present embodiment will be described with reference to the flowcharts shown in FIGS. As shown in FIGS. 2 and 3, the control method and apparatus according to the present embodiment include control steps of mode 0 to mode 13. When operating the floor heating system, first, as a preparatory step, the control device built in the control box 18 is put into an operating state, and the room set temperature (R _s ) ° C. and the heat medium return set temperature (M _s ) ° C. And set the timer to ON.
-Mode 0 to 1 step-
This control process is a floor heating startup process, the heat medium supply and stop operating valve 15 in the state OFF, the detected room temperature by the room temperature detecting sensor 16, the room temperature detected (RTH) ° C. Is lower than the temperature (R _s −1) ° C., or even when the temperature is equal to or higher than the temperature (R _s −1) ° C., the heat medium return detection temperature (MTH) ° C. detected by the return heat medium temperature sensor 17 is If the temperature (M _s -2) less than ° C. further the room temperature detected (RTH) ° C. compares the lower or not than 10 ° C.. Then, the room detection temperature (RTH) ° C. is compared and detected to be lower or higher than 10 ° C., and the process proceeds to the next control step.
-Mode 2-3 steps-
In this control process, the heating medium supply / stop operation valve 15 is turned on by the control device, the heating medium circulation pump 14 is operated, the heat source 13 exchanges heat, and the heating medium is heated. Supplying and circulating to the pipe 12 for increasing the room temperature, and in the above step, when the room detection temperature (RTH) ° C is lower than 10 ° C, the room temperature detection sensor 16 detects the room temperature, Floor heating is performed until the room temperature reaches a room set temperature (R _s ) ° C. or higher (see mode 2). When the room detection temperature (RTH) ° C. is 10 ° C. or higher , The detected temperature (RTH) ° C. is not less than the room set temperature (R _s ) ° C., or the return heat medium temperature sensor 17 detects the heat medium return temperature, and the heat medium return detection temperature (MTH) ° C. is the heat medium return set temperature (M _s) until the more than ℃, the floor heating Jar (see mode 3). Thus, when the temperature is 10 ° C. or higher, even if the detected room detection temperature (RTH) ° C. is lower than the room set temperature (R _s ) ° C., the heat medium return detection temperature (MTH) ° C. is the heat medium return. When the set temperature (M _s) is equal to or greater than ° C., room temperature, shortly reaches the room set temperature (R _s) ° C., part Yaken out temperature (RTH) ° C. accommodation set temperature (R _s) ° C. or higher This is because the room temperature rises to the room set temperature (R _s ) ° C. or more and is overheated.
-Mode 4-5 steps-
This control step is a control step for lowering the room temperature when the room temperature rises to a room set temperature (R _s ) ° C. or higher by the above-described step. In mode 3, when the room set temperature (R _s ) ° C. or the heat medium return set temperature (M _s ) ° C. or higher is reached, the control device sets the heat medium supply / stop operation valve 15 to the OFF state, By stopping the heating medium circulation pump 14, the floor heating is stopped, the heating medium return detection temperature (MTH) ° C. detected by the return heating medium temperature sensor 17 is lower than the temperature (M _s −5) ° C., and the room This state is maintained until the room temperature detected by the temperature detection sensor 16 becomes lower than the room set temperature ( R _s ) ° C. Then, when the room temperature becomes lower than the room set temperature ( R _s ) ° C., the control returns to the mode 2 and the floor heating is resumed (see mode 4 and mode 5). This is because the room temperature is set to the room set temperature ( R _s ) ° C. due to disturbances such as the outside air temperature and other heat sources even if the heat medium return temperature is lowered by heat radiation.
-Mode 6 process-
In this step, the room temperature detected by the room temperature detection sensor 16 is the room set temperature ( R ) even if the heat medium return detection temperature (MTH) ° C. is lower than the temperature (M _s −5) ° C. in the control step. _s ) A control process for dealing with cases where the temperature is equal to or higher than ° C. and maintaining the room temperature at the room set temperature (R _s ) ° C. Thus, when the room temperature is equal to or higher than the room set temperature (R _s ) ° C., it is not necessary to perform floor heating. Therefore, the heating medium supply / stop operation valve 15 is turned off, and the room detection temperature ( The room temperature is lowered until RTH) ° C. is lower than the temperature (R _s +1) ° C. (see mode 6). This makes it possible to room temperature so as to maintain the room temperature setting (R _s) ° C., automatically room set temperature (R _s) ° C. or heating medium return set temperature (M _s) to adjust ° C..
-Mode 7-13 steps-
In this step, the room temperature detection sensor 16 detects a room temperature exceeding the room setting temperature ( R _s ) in the state where the heating medium return setting temperature (M _s ) ° C. is lowered in the above step, and the room detection temperature ( If RTH) ° C. is the temperature (R _s + α) ° C., the heating medium return detection temperature (MTH) ° C. is the temperature (M _s −β) ° C. according to the increase width (α) ° C. When the room temperature detection sensor 16 detects a room temperature lower than the temperature (R _s + α) ° C., the width (β) is changed and the heating medium return set temperature (M _s ) ° C. is controlled to decrease. The heating medium return set temperature (M _s ) ° C. is controlled to increase. That is, in the mode 6 process, when the room detection temperature (RTH) ° C. is lower than the temperature (R _s +1) ° C., the heating medium supply / stop operation valve 15 is turned ON and the heating medium return detection temperature (MTH) ° C. However, the floor heating is performed until the temperature (M _s ) ° C. is reached, and when the temperature (M _s ) ° C. or more is reached, the process returns to the mode 4 step, and the control from the mode 4 is repeated to change the room temperature to the room set temperature ( R _s ) maintained at ° C. (see mode 7). When the heat medium return detection temperature (MTH) ° C. is lower than the temperature (M _s −10) ° C., the heat medium supply / stop operation valve 15 is turned OFF, and the room detection temperature (RTH) ° C. becomes the temperature ( The room temperature is lowered until R _s +2) ° C. (see mode 8). When the temperature falls below (R _s +2) ° C., the heating medium supply / stop operation valve 15 is turned on to detect the heating medium return temperature. Floor heating is performed until (MTH) ° C. becomes higher than the temperature (M _s −5) ° C. When the heat medium return detection temperature (MTH) ° C. becomes equal to or higher than the temperature (M _s −5) ° C., the process returns to the mode 6 step and the control from the mode 6 is repeated (see mode 9). When the heat medium return detection temperature (MTH) ° C. is lower than the temperature (M _s −15) ° C., floor heating is performed until the room detection temperature (RTH) ° C. becomes lower than the temperature (R _s +3) ° C. When the stopped state is maintained and the room detection temperature (RTH) ° C. becomes lower than the temperature (R _s +3) ° C., the floor heating is restarted, and the heat medium return detection temperature (MTH) ° C. becomes the temperature (M _s -10) Floor heating is performed until the temperature is lower than ° C (see modes 10 to 11). In this manner, the modes 11 to 13 are sequentially controlled in the following.
[0014]
And about the floor heating system of embodiment mentioned above, the data as shown to FIG.4, 5 was able to be obtained from the place where the temperature change was investigated in one room of a 20-tsubo concrete building. As can be seen from this data, it was confirmed that the room detection temperature can always maintain the room set temperature region after the floor heating rises. As described above, according to the temperature control method and apparatus of the present embodiment, the opening and closing of the heating medium supply / stop valve is controlled by both the room temperature and the return heating medium temperature, so that the room temperature is external. It can be confirmed that a rapid response can be made when changes occur due to the influence of temperature and other disturbances. That is, according to the control system of the present embodiment, the room temperature and the floor temperature (heating medium return temperature) are controlled and operated by selecting the optimum set temperature under the circumstances at that time. You can get a floor heating environment.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a floor heating system showing an embodiment of the present invention.
FIG. 2 is a flowchart of this embodiment.
FIG. 3 is a flowchart of the present embodiment.
FIG. 4 is a data diagram for explaining a temperature change of a room temperature in the present embodiment.
FIG. 5 is an explanatory diagram of a conventional floor heating system.
[Explanation of symbols]
10 Heating to room 11 bed 12 the heat medium circulation pipe 13 heat source <br/> 14 heat medium circulation pump 15 heat medium supply and stop operating valve return heat medium (valve)
16 Room temperature sensor (room temperature sensor)
17 Return heat medium temperature sensor 18 Control box (control means)
12a Supply pipe 12b Return pipe

Claims

A heat medium circulation pipe that circulates the heat medium exchanged by the heat source is arranged on the floor, and the room is heated by radiation from the floor while controlling the temperature through the heat medium circulating in the heat medium circulation pipe. In the method of controlling the temperature of the floor heating system,
A heat medium circulation pump for circulating the heat medium in the heat medium circulation pipe;
A heat medium supply / stop valve for controlling the return amount of the heat medium from the return pipe of the heat medium circulation pipe to the heat source;
A room temperature sensor for detecting the room temperature of the room;
The return pipe disposed outside the room together with the heat source, the heat medium circulation pump, and the heat medium supply / stop operation valve is interposed between the heat medium supply / stop operation valve and the heat source. A return heat medium temperature sensor for detecting a return temperature of the heat medium circulating in the heat medium circulation pipe to the heat source;
Control means for controlling opening and closing of the heating medium circulation pump and the heating medium supply / stop operation valve,
Turn on the heating medium supply / stop operation valve, operate the heating medium circulation pump, supply and circulate the heated heating medium by exchanging heat with the heat source to the heating medium circulation pipe, If the room detection temperature exceeds the room setting temperature while the temperature is being increased, the temperature decrease range of the heating medium return setting temperature is changed according to the temperature increase range of the room detection temperature, with lowering the heating medium return set temperature, the return heat medium temperature sensor heat medium detected by the return detected temperature, the heating medium supply and stop operation for valves to be lower than the set temperature return heat transfer medium set The temperature is controlled so as to suppress the rise in room temperature by stopping the circulation of the heat medium in the OFF state,
When the room temperature is lower than the room set temperature, the heating medium supply / stop operation valve is turned on to control the temperature so that the detected temperature of the heating medium returns to the set temperature of the heating medium return. Temperature control method for floor heating system.

A heat medium circulation pipe that circulates the heat medium exchanged by the heat source is arranged on the floor, and the room is heated by radiation from the floor while controlling the temperature through the heat medium circulating in the heat medium circulation pipe. In the method of controlling the temperature of the floor heating system,
A heat medium circulation pump for circulating the heat medium in the heat medium circulation pipe;
A heat medium supply / stop valve for controlling the return amount of the heat medium from the return pipe of the heat medium circulation pipe to the heat source;
A room temperature sensor for detecting the room temperature;
The return pipe disposed outside the room together with the heat source, the heat medium circulation pump, and the heat medium supply / stop operation valve is interposed between the heat medium supply / stop operation valve and the heat source. A return heat medium temperature sensor for detecting a return temperature of the heat medium circulating in the heat medium circulation pipe to the heat source;
Control means for controlling opening and closing of the heating medium circulation pump and the heating medium supply / stop operation valve,
A control step of detecting the room temperature by the room temperature sensor, or both the room temperature by the room temperature sensor and the heat medium return temperature by the return heat medium temperature sensor;
If the room temperature has not reached the room set temperature (R _s ) ° C., the heating medium supply / stop operation valve is opened until the room temperature sensor detects the room set temperature (R _s ) ° C. A control step of circulating the heat medium exchanged by the heat source to the heat medium circulation pipe to increase the room temperature;
When the room temperature reaches the room set temperature (R _s ) ° C., the return heat medium temperature sensor detects the heat medium return temperature and sets the heat medium return temperature to the heat medium return set temperature (M _s ) ° C. A control step of repeatedly supplying and stopping circulation of the heat medium by repeatedly opening and closing the heating medium supply and stop operation valve so as to be maintained;
When the room temperature sensor detects a room temperature below a room set temperature (R _s ) ° C. in a control process of repeatedly supplying and stopping the circulation of the heat medium by repeatedly opening and closing the heating medium supply / stop operation valve. Returning to the control step of raising the room temperature, and lowering the heating medium return set temperature (M _s ) ° C. when the room temperature sensor detects a room temperature exceeding the room set temperature (R _s ) ° C .;
In the control step of decreasing the heat medium return set temperature (M _s) ℃, at reduced the heat medium return set temperature (M _s) ℃, room temperature sensor room set temperature (R _s) room temperature above ° C. If the detected room temperature is a temperature (R _s + α) ° C., the heating medium supply / stop operation valve is closed according to the increase width (α) ° C. to circulate the heating medium. If the heating medium return detection temperature detected by the return heating medium temperature sensor when temperature is stopped is a temperature (M _s −β) ° C., the lowering width (β) is changed and the heating medium return setting temperature is changed. controlled to lower the, also, when the room temperature sensor detects the room temperature below ℃ temperature (R _s + α), and controlling so as to increase the heat medium return set temperature,
A temperature control method for a floor heating system, comprising:

A heat medium circulation pipe that circulates the heat medium exchanged by the heat source is arranged on the floor, and the room is heated by radiation from the floor while controlling the temperature through the heat medium circulating in the heat medium circulation pipe. In the temperature control device of the floor heating system,
A heat medium circulation pump for circulating the heat medium in the heat medium circulation pipe;
A heat medium supply / stop valve for controlling the return amount of the heat medium from the return pipe of the heat medium circulation pipe to the heat source;
A room temperature sensor for detecting the room temperature of the room;
The return pipe disposed outside the room together with the heat source, the heat medium circulation pump, and the heat medium supply / stop operation valve is interposed between the heat medium supply / stop operation valve and the heat source. A return heat medium temperature sensor for detecting a return temperature of the heat medium circulating in the heat medium circulation pipe to the heat source;
Control means for controlling opening and closing of the heating medium circulation pump and the heating medium supply / stop operation valve,
The control means turns on the heating medium supply / stop valve, operates the heating medium circulation pump, exchanges heat with the heat source, and heats the heating medium to the heating medium circulation pipe. When the room detection temperature exceeds the set room temperature while the supply is circulated and the room temperature is raised, the temperature reduction range of the heating medium return set temperature according to the rise temperature range of the room detection temperature. The heating medium return set temperature is lowered, and the heating medium supply / stop is performed so that the heating medium return detection temperature detected by the return heating medium temperature sensor is lower than the set heating medium return setting temperature. by stopping the circulation of the heat medium temperature controlled to suppress an increase in the room temperature operation valves in a state OFF, the
When the room temperature is lower than the room set temperature, the heating medium supply / stop operation valve is turned on to control the temperature so that the detected temperature of the heating medium returns to the set temperature of the heating medium return. Temperature control device for floor heating system.