JP3745299B2

JP3745299B2 - Hot water floor heating system

Info

Publication number: JP3745299B2
Application number: JP2002104998A
Authority: JP
Inventors: 幸吉佐藤
Original assignee: Rinnai Corp
Current assignee: Rinnai Corp
Priority date: 2002-04-08
Filing date: 2002-04-08
Publication date: 2006-02-15
Anticipated expiration: 2022-04-08
Also published as: JP2003302067A

Description

【０００１】
【発明の属する技術分野】
本発明は、加熱手段により内部を通過する水が加熱される加熱回路と、室内の床面に配置されて内部を通過する温水を熱源として該室内を暖める床暖房回路とを含む温水回路と、該温水回路に温水を循環させる循環ポンプと、該温水回路に設けられ、開弁又は閉弁により該床暖房回路への温水の流通を許可又は禁止する開閉弁と、該室内の温度を設定する室温設定手段と、該室内の温度を測定する室温測定手段と、該室温設定手段による設定室温Ｔ’と該室温測定手段による測定室温Ｔとの温度偏差ΔＴ（＝Ｔ−Ｔ’）に基づき、該加熱手段による該加熱回路の水への加熱量と、該開閉弁の開弁時間とを制御する制御手段とを備えた温水式床暖房システムに関する。
【０００２】
【従来の技術】
前記温水式床暖房システムでは、加熱手段により加熱回路の水が加熱されて生じた温水が循環ポンプの作動により温水回路を循環し、床暖房回路を介して室内に熱を与えることで床暖房運転が行われる。
【０００３】
床暖房運転の開始後、３０分等の一定時間に渡り、加熱回路の下流且つ床暖房回路の上流における温水回路の水温が７２℃等の高温に制御された状態で床暖房運転が継続される。これは、床暖房運転開始から短時間で室温を上昇させ、室内を迅速に暖めるためである。
【０００４】
かかる一定時間の初期的な床暖房運転に続き、測定室温Ｔと設定室温Ｔ’との温度偏差ΔＴ（＝Ｔ−Ｔ’）に基づき、表１に示すテーブルに従って加熱回路の下流且つ床暖房回路の上流における温水回路の水温と、１周期（２０分）ごとの開閉弁の開弁時間とが制御される。
【０００５】
【表１】

【０００６】
表１に示すように温水回路の水温が６０℃に制御される場合と、７２℃に制御される場合とで１周期（２０分）における開弁時間の制御は相違するが、以下、当該水温が７２℃に制御される場合について説明する。まず、床暖房運転時間がまだ短く、室温Ｔが低いために偏差ΔＴが−１℃以下のとき、開弁時間が１周期のうち１０分に設定される（表１(10)参照）。これにより、床暖房回路を流れる温水から室内に熱が移動し、室温Ｔが徐々に上昇する。そして、室温Ｔが設定室温Ｔ’に近づき偏差ΔＴが−０．２℃以上、且つ、０．２℃以下となったとき、開弁時間が１周期のうち８分に設定される（表１ (7)参照）。
【０００７】
【発明が解決しようとする課題】
しかし、部屋の構造や大きさ、構造物の素材や外気温等、種々の要因に応じ、当該部屋から外部に逃げていく熱量は変動する。従って、床暖房運転の開始後に一律に温水回路の水温を高温として一定時間に渡って床暖房運転が実行されたのでは、室温が過剰に上昇してしまうおそれもあり、また、この逆に過剰に低下してしまうおそれもある。
【０００８】
また、温度偏差ΔＴが−０．２℃≦ΔＴ≦０．２℃の場合に一律に開弁時間が８分とされたのでは、室温Ｔが設定温度Ｔ’からみて過剰に低下したり上昇したりする場合がある。このため、室内にいる者が室温Ｔが設定温度Ｔ’から外れて制御されることに不快を覚えるおそれがある。
【０００９】
そこで、本発明は室温をより確実に設定温度に一致するように制御することができる温水式床暖房システムを提供することを解決課題とする。
【００１０】
【課題を解決するための手段】
前記課題を解決するための本発明の第１態様の温水式床暖房システムは、前記制御手段が、床暖房運転の開始後、前記温度偏差ΔＴ（＝Ｔ−Ｔ’）が閾値（＜０）を超えるまでの間、前記放熱量のレベルを一定に維持し、該閾値を超えた前記温度偏差ΔＴが第１所定値（＞０）を超える場合は直前の放熱量のレベルを低減し、第２所定値（＜０）を下回る場合は直前の放熱量のレベルを増大し、第１所定値以下且つ第２所定値以上の場合は直前の放熱量のレベルを維持し、増大、低減又は維持した該レベルに応じて該加熱手段による該加熱回路の水への加熱量と、該開閉弁の開弁時間とを制御することを特徴とする。また、前記課題を解決するための本発明の第２態様の温水式床暖房システムは、前記制御手段が、床暖房運転の開始後、前記温度偏差ΔＴ（＝Ｔ−Ｔ’）が閾値（＜０）を超えるまでの間、前記放熱量のレベルを一定に維持し、該閾値を越えた後、断続的に決定される該温度偏差ΔＴが第１所定値（＞０）を超えるときは直前の放熱量のレベルを低減し、放熱量のレベルの低減に伴い断続的に決定される該温度偏差ΔＴが低下して第２所定値（＜０）を下回るときは直前の放熱量のレベルを増大し、放熱量のレベルの低減、又は低減及び増大を経た後で断続的に決定される該温度偏差ΔＴが第１所定値以下且つ第２所定値以上となるときは直前の放熱量のレベルを維持することを特徴とする。
【００１１】
本発明によれば、温度偏差ΔＴ（＝Ｔ−Ｔ’）の上昇又は下降の程度に応じ、放熱量のレベルが更新設定可能であり、当該更新設定された放熱量のレベルに応じて加熱手段による加熱量及び開閉弁の開弁時間が制御される。温度偏差ΔＴの上昇又は下降の程度（設定室温Ｔ’を基準とした測定室温Ｔの上昇又は下降の程度）は部屋の広さ、室外へ逃げる熱量、室外気温等の諸条件に応じて変動するので、当該諸条件に応じた形で放熱量のレベルを設定することができ、ひいては室温を設定温度に安定に制御することができる。
【００１４】
本発明によれば、温度偏差ΔＴが閾値まで上昇した後の上昇・下降の程度に応じ、室外へ逃げる熱量等の諸条件に応じた形で適切に放熱量のレベルを更新設定し、ひいては室温Ｔを設定室温Ｔ’に安定に制御することができる。
【００１５】
また、本発明では、前記制御手段は、床暖房運転の開始後、前記放熱量のレベルを最高レベルに設定し、前記温度偏差ΔＴ（＝Ｔ−Ｔ’）が前記閾値（＜０）を超えたとき、該レベルを最高レベルから低下させることを特徴とする。
【００１６】
本発明によれば、床暖房運転の開始後、放熱量が最高レベルに設定されるので、室温の迅速な上昇を図ることができる。また、温度偏差が閾値に到った後、放熱量のレベルが低下されるので、必要以上に長時間に渡って放熱量が最高レベルに維持され、室温Ｔが設定室温Ｔ’よりも過剰に上昇する事態を回避することができる。
【００１７】
【発明の実施の形態】
本発明の温水式床暖房システムの実施形態について図面を用いて説明する。図１は第１実施形態の温水式床暖房システムの構成説明図であり、図２は第１実施形態の温水式床暖房システムの機能説明図であり、図３は第１実施形態の温水式床暖房システムによる室温制御の説明図であり、図４は第２実施形態の温水式床暖房システムの機能説明図である。
【００１８】
図１に示す温水式床暖房システムは、温水回路１と、バーナ（加熱手段）２と、床暖房運転が行われる室内に設けられ種々の設定が可能なリモコン３と、リモコン３における設定等に基づいてバーナ２の加熱量等を制御する制御ユニット（制御手段）４とを備えている。
【００１９】
温水回路１はバーナ２により内部を通過する水が加熱される加熱回路１１と、室内に設けられた床暖房装置５の内部を通過する温水を熱源として室内を暖める床暖房回路１６とを構成要素として含む。また、温水回路１は加熱回路１１の下流から温水回路１の温水の膨張及び収縮を吸収するシスターン１３まで到る回路１２と、シスターン１３から加熱回路１１の上流に到る回路１４と、回路１４から分岐して床暖房回路１６の上流に到る回路１５と、床暖房回路１６の下流から延びて回路１２に合流する回路１７とを構成要素として含む。
【００２０】
温水回路１の回路１４には、回路１５の分岐位置より上流に温水回路１に温水を循環させる循環ポンプ１４１が設けられている。温水回路１の回路１５には、通電・通電停止に伴い開弁・閉弁し、これにより床暖房回路１６への温水の流れを許可・禁止する熱動弁（開閉弁）１５１が設けられている。また、温水回路１の回路１５には熱動弁１５１より上流において床暖房回路１６に供給される温水の温度を測定する給湯サーミスタ１５２が設けられている。
【００２１】
バーナ２はファン２１により燃焼用空気が供給され、ガス通路２２から供給されるガスが点火されることで燃焼する。ガス通路２２には上流から順に元ガス電磁弁２２１と、ガス電磁弁２２２と、ガス調節弁２２３とが設けられている。
【００２２】
リモコン３には液晶パネル（図示略）の表示に基づいて室温を設定可能な設定ボタン（室温設定手段）３１と、室温度を測定する室温センサ（室温測定手段）３２と、床暖房運転のＯＮ／ＯＦＦを切り替える運転スイッチ３３とが設けられている。
【００２３】
制御ユニット４は放熱量レベルｎと、回路１５における温水回路１の水温と、熱動弁１５２への通電時間との関係を示すテーブル（次の表２参照）等を記憶する記憶手段４１を備えている。
【００２４】
【表２】

【００２５】
また、制御ユニット４は後述のようにリモコン３の設定ボタン３１による設定室温Ｔ’と、室温センサ３２による測定室温Ｔとの温度偏差ΔＴ（＝Ｔ−Ｔ’）に基づき一のレベルｎを設定するレベル設定手段４２と、設定されたレベルｎに従ってバーナ２による加熱量を制御することで間接的に温水回路１の水温を制御する加熱量制御手段４３と、設定されたレベルｎに従って熱動弁１５１への通電時間を制御することでその開弁時間を制御する開閉弁制御手段４４とを備えている。
【００２６】
前記構成の温水式床暖房システムの機能について図２を用いて説明する。
【００２７】
リモコン３において運転スイッチ３３がＯＮ操作されると、まず、レベル設定手段４２がレベルｎを「１２（最高レベル）」に設定する（ｓ１０２）。これに応じ、加熱量制御手段４３が給湯サーミスタ１５２による測定水温が７２℃になるようにバーナ２の目標燃焼量を決定し、ファン電流を通じてファン２１の回転数を目標燃焼量に応じた回転数に制御し、ガス調節弁２２３の開度を目標燃焼量に応じた開度に制御する。また、イグナイタ及び点火電極（図示略）を通じてガス通路２２からバーナ２に供給されるガスが点火され、ファン２１から燃焼用空気が供給されてバーナ２が燃焼を開始する。
【００２８】
次に、レベル設定手段４２が、レベルｎを１２（最高レベル）に維持しておくべきか否かを判断すべく、温度偏差ΔＴが−３℃（閾値）を超えたか否かを判定する（ｓ１０４）。続いて温度偏差ΔＴが−３℃（閾値）を超えたとき（ｓ１０４でＹＥＳ）、レベル設定手段４２は、レベルｎを１２（最高レベル）から１０に低下させる（ｓ１０６）。なお、このときレベルｎは１０ではなく、８、９等に適宜低下されてよい。
【００２９】
次にレベル設定手段４２は、レベルｎを１２から１０に切り替えた後（ｓ１０６参照）、２０分ごとに周期的に▲１▼温度偏差ΔＴが−５℃を下回っているか否か、▲２▼温度偏差ΔＴが−５℃以上且つ−０．２℃（第２所定値）を下回っているか否か、▲３▼−０．２℃（第２所定値）以上且つ０．２℃（第１所定値）以下であるか、或いは▲４▼０．２℃（第１所定値）を超えているかを判定する（ｓ１０８、ｓ１１０、ｓ１２０）。
【００３０】
換気のため窓が開放された等のため室温Ｔが急激に低下し、▲１▼温度偏差ΔＴが−５℃を下回る場合（ｓ１０８でＹＥＳ）、レベル設定手段４２はレベルｎを再度「１２」に設定し直す（ｓ１０２）。
【００３１】
レベル設定手段４２は、▲２▼温度偏差ΔＴが−５℃以上且つ−０．２℃を下回る場合（ｓ１０８でＮＯ、ｓ１１０でＹＥＳ）、レベルｎが１１以下か否か（レベルｎをｎ＋１に増大可能か否か）を判定する（ｓ１１２）。このときレベルｎが１１以下（レベルｎをｎ＋１に増大可能）であれば（ｓ１１２でＹＥＳ）、レベルｎをｎ＋１に増大させる（ｓ１１４）。一方、このときレベルｎが１２（レベルｎをｎ＋１に増大不可能）であれば（ｓ１１２でＮＯ）、レベルｎをそのまま１２に維持する（ｓ１２４）。
【００３２】
また、レベル設定手段４２は、▲３▼温度偏差ΔＴが−０．２℃以上且つ０．２℃以下の場合（ｓ１１０でＮＯ、ｓ１２０でＹＥＳ）、レベルｎをそのままに維持する（ｓ１２４）。
【００３３】
さらに、レベル設定手段４２は、▲４▼温度偏差ΔＴが０．２℃を超えている場合（ｓ１１０及びｓ１２０でＮＯ）、レベルｎが２以上であるか否か（レベルｎをｎ−１に減少可能か否か）を判定する（ｓ１３２）。このときレベルｎが２以上（レベルｎをｎ−１に減少可能）であれば（ｓ１３２でＹＥＳ）、レベルｎをｎ−１に減少させる（ｓ１３４）。一方、このときレベルｎが１（レベルｎをｎ−１に減少不可能）であれば（ｓ１３２でＮＯ）、レベルｎをそのまま１に維持する（ｓ１２４）。
【００３４】
レベル設定手段４２により設定されるレベルｎに応じ、前記表２に従って、加熱量制御手段４３は給湯サーミスタ１５２により測定される水温に基づき、バーナ２の加熱量を制御することで当該水温を間接的に制御する。また、開閉弁制御手段４４が熱動弁１５１への通電時間を制御することで、熱動弁１５１の開弁時間を間接的に制御する。
【００３５】
前述のようにレベル設定手段４２によって放熱量のレベルｎが設定されることにより、室温Ｔがどのように制御されるかについて図３を用いて説明する。
【００３６】
レベルｎ＝１２で床暖房運転が実行され、温度偏差ΔＴが−３℃を越えた後、温度偏差ΔＴが＋０．２℃を超える程度に室温Ｔが設定温度Ｔ’を超えて上昇する（矢印Ａ参照）。
【００３７】
このとき、室温Ｔがどの程度上昇するかは部屋の広狭、密閉性、室外気温等の諸条件に応じて相違する。例えば、狭い部屋や、密閉性が高い部屋については、室内空気の熱容量が小さく、室外に逃げる熱量が少ないため、室温Ｔが設定温度Ｔ’を超えて大きく上昇する。この場合、温度偏差ΔＴが０．２℃を超える状態が長時間継続し、レベル設定手段４２によりレベルｎが減少される回数（図２ｓ１３４参照）が比較的多くなる。一方、広い部屋や密閉性が低い部屋については、室内空気の熱容量が大きく、室外に逃げる熱量が多いため、室温Ｔが設定温度Ｔ’を超える程度が小さい。この場合、温度偏差ΔＴが０．２℃を超える状態が比較的短時間で終了し、レベル設定手段４２によりレベルｎが減少される回数（図２ｓ１３４参照）が比較的少なくなる。
【００３８】
レベルｎが減少されることで、加熱量制御手段４３により温水回路１の水温が低下されるか、或いは開閉弁制御手段４４により開閉弁１５１の開弁時間が短縮され、床暖房回路１６から室内への放熱量が減少する。このため、室温Ｔが上昇から下降に転じ、温度偏差ΔＴが＋０．２℃を超える程度に設定温度Ｔ’を下回って下降する（矢印Ｂ参照）。
【００３９】
このとき、室温Ｔがどの程度下降するかも部屋の広狭、密閉性、室外気温等の諸条件に応じて相違する。例えば、狭い部屋や、密閉性が低い部屋については、室内空気の熱容量が小さく、室外に逃げる熱量が多いため、室温Ｔが設定温度Ｔ’を下回り大きく低下する。この場合、温度偏差ΔＴが−０．２℃を下回る状態が長時間継続し、レベル設定手段４２によりレベルｎが増大される回数（図２ｓ１１４参照）が比較的多くなる。一方、広い部屋や、密閉性が高い部屋については、室内空気の熱容量が大きく、室外に逃げる熱量が少ないため、室温Ｔが設定温度Ｔ’を下回る程度が小さい。この場合、温度偏差ΔＴが−０．２℃を下回る状態が比較的短時間で終了し、レベル設定手段４２によりレベルｎが増大される回数（図２ｓ１１４参照）が比較的少なくなる。
【００４０】
レベルｎが増大されることにより、加熱量制御手段４３により温水回路１の水温が上昇されるか、或いは開閉弁制御手段４４により開閉弁１５１の開弁時間が延長され、床暖房回路１６から室内への放熱量が増加する。このため、室温が減少から増加に転じ、その後、前述のようにレベル設定手段４２によるレベルｎの減少・増加が繰り返される（図２ｓ１１４、ｓ１３４参照）。これにより室温Ｔも上昇・下降を繰り返す（矢印Ｃ参照）。しかる後、温度偏差ΔＴが−０．２℃以上０．２℃以下に安定するようになると、レベル設定手段４２によるレベルｎの増減は行われず、そのままに維持される（図２ｓ１２４参照）。これにより室温Ｔが設定温度Ｔ’付近に安定する（矢印Ｄ参照）。
【００４１】
本実施形態の温水式床暖房システムによれば、床暖房運転の開始後、放熱量のレベルｎが１２（最高レベル）に設定されるので（図２ｓ１０２参照）室温Ｔの迅速な上昇を図ることができる（図３矢印Ａ参照）。また、室温Ｔが上昇して温度偏差ΔＴが−３℃（閾値）を超えた後、レベルｎが低下される（図２ｓ１０６参照）。従って、放熱量のレベルｎが必要以上に長時間に渡って１２（最高レベル）に維持され、室温Ｔが設定室温Ｔ’よりも過剰に上昇してしまう事態を回避することができる。
【００４２】
さらに、レベルｎが温度偏差ΔＴに基づいて設定されるが、温度偏差ΔＴの増大又は低下の程度は室内から外部へ逃げる熱量等の諸条件に依存するので、レベルｎを当該諸条件に応じた形で設定することができる（図２ｓ１１４、ｓ１２４、ｓ１３４参照）。また、当該レベルに基づき、加熱量制御手段４３によりバーナ２の加熱量、ひいては温水回路１の水温が制御され、開閉弁制御手段４４により開閉弁１５１の開弁時間（通電時間）が制御されることで、室温Ｔを設定温度Ｔ’に安定に制御することができる（図３矢印Ｄ参照）。
【００４３】
また、記憶手段４１により記憶されているテーブル（表２参照）により様々な環境にある部屋の室温を制御可能なので、畳、フローリング、石等の床材質の相違等に対応すべく複数のテーブル（表１参照）が記憶されている場合と比較して室温制御用のテーブル記憶に要する記憶手段４１の記憶容量を節約することができる。
【００４４】
次に本発明の温水式床暖房システムの第２実施形態について説明する。第２実施形態のシステムの構成は図１に示す第１実施形態のシステムと同様であるので説明を省略する。第２実施形態のシステムによれば、図４に示す手順で室温Ｔが制御される。
【００４５】
図４に示す手順ｓ２０２〜ｓ２０６は図２に示す手順ｓ１０２〜１０４と同様なので説明を省略する。第２実施形態が第１実施形態と比較して相違するのは、レベルｎの増減幅が「１」の場合のみならず「２」の場合もある点である。
【００４６】
詳細には、レベルｎが１２から１０に切り替えられた後（ｓ２０６参照）、２０分ごとに周期的に▲１▼温度偏差ΔＴが−５℃を下回っているか否か、▲２▼温度偏差ΔＴが−５℃以上且つ−３℃を下回っているか否か、▲３▼−３℃以上且つ−０．２℃を下回っているか、▲４▼−０．２℃以上且つ０．２℃以下か、▲５▼０．２℃を超え且つ３℃以下か、或いは▲６▼ 3℃を超えているかを判定する（ｓ１０８、ｓ２１０、ｓ２２０、ｓ２３０、ｓ２４０）。
【００４７】
換気のため窓が開放された等のため室温Ｔが急激に低下し、▲１▼温度偏差ΔＴが−５℃を下回る場合（ｓ２０８でＹＥＳ）、レベル設定手段４２はレベルｎを再度「１２」に設定し直す（ｓ２０２）。
【００４８】
レベル設定手段４２は、▲２▼温度偏差ΔＴが−５℃以上且つ−０．２℃を下回る場合（ｓ２０８でＮＯ、ｓ２１０でＹＥＳ）、レベルｎが１０以下か否か（レベルｎをｎ＋２に増大可能か否か）を判定する（ｓ２１２）。このときレベルｎが１０以下（レベルｎをｎ＋２に増大可能）であれば（ｓ２１２でＹＥＳ）、レベルｎをｎ＋２に増大させる（ｓ１１４）。一方、このときレベルｎが１１又は１２（レベルｎをｎ＋２に増大不可能）であれば（ｓ１１２でＮＯ）、さらにレベルｎが１１以下か否か（レベルｎ＋１に増大可能か否か）が判定される（ｓ２２２）。
【００４９】
また、レベル設定手段４２は、▲３▼温度偏差ΔＴが−３℃以上且つ−０．２℃を下回る場合（ｓ２１０でＮＯ、ｓ２２０でＹＥＳ）、レベルｎが１１以下か否か（レベルｎをｎ＋１に増大可能か否か）を判定する（ｓ２２２）。このときレベルｎが１１以下（レベルｎをｎ＋１に増大可能）であれば（ｓ２２２でＹＥＳ）、レベルｎをｎ＋１に増大させる（ｓ１１４）。一方、このときレベルｎが１２（レベルｎをｎ＋１に増大不可能）であれば（ｓ１１２でＮＯ）、レベルｎをそのまま１２に維持する（ｓ２２２）。
【００５０】
さらにレベル設定手段４２は、▲４▼温度偏差ΔＴが−０．２℃以上且つ０．２℃以下の場合（ｓ２２０でＮＯ、ｓ２３０でＹＥＳ）、レベルｎをそのままに維持する（ｓ２３４）。
【００５１】
また、レベル設定手段４２は、▲５▼温度偏差ΔＴが０．２℃を超え且つ３℃以下の場合（ｓ２３０でＮＯ、ｓ２４０でＹＥＳ）、レベルｎが２以上であるか否か（レベルｎをｎ−１に減少可能か否か）を判定する（ｓ２４２）。このときレベルｎが２以上（レベルｎをｎ−１に減少可能）であれば（ｓ２４２でＹＥＳ）、レベルｎをｎ−１に減少させる（ｓ２４４）。一方、このときレベルｎが１（レベルｎをｎ−１に減少不可能）であれば（ｓ２４２でＮＯ）、レベルｎをそのまま１に維持する（ｓ２３４）。
【００５２】
さらにレベル設定手段４２は、▲６▼温度偏差ΔＴが３℃を超える場合（ｓ２４０でＮＯ）、レベルｎが３以上であるか否か（レベルｎをｎ−２に減少可能か否か）を判定する（ｓ２５２）。このときレベルｎが３以上（レベルｎをｎ−２に減少可能）であれば（ｓ２５２でＹＥＳ）、レベルｎをｎ−２に減少させる（ｓ２５４）。一方、このときレベルｎが１又は２（レベルｎをｎ−２に減少不可能）であれば（ｓ２５２でＮＯ）、レベルｎをｎ−１に原書可能か否かが判定される（ｓ２４４）。
【００５３】
以下、第１実施形態と同様に、レベル設定手段４２により設定されるレベルｎに応じ、前記表２に従って、加熱量制御手段４３は給湯サーミスタ１５２により測定される水温に基づき、バーナ２の加熱量を制御することで当該水温を間接的に制御する。また、開閉弁制御手段４４が熱動弁１５１への通電時間を制御することで、熱動弁１５１の開弁時間を間接的に制御する。
【００５４】
第２実施形態の本システムによれば、レベルｎが１より大きい幅「２」で適宜増減される（図４ｓ２１４、ｓ２５４参照）。従って、室温Ｔが増減を繰り返しながら設定室温Ｔ’への収束速度を増大し（図３矢印Ｂ、Ｃ参照）、迅速に室温Ｔを設定室温Ｔ’に収束させることができる（図３矢印Ｄ参照）。
【００５５】
また、第１及び第２実施形態では図２に示すテーブルにおいて一のレベルｎに対し、温水回路１６の水温（温水温度）及び熱動弁１５１への通電時間（〜開弁時間）の組み合わせが１つ対応しているが、他の実施形態として例えばレベル「９」には温水温度＝６０℃、通電時間＝１９分のほか、温水温度＝７２℃、通電時間＝１３分が対応するといったように一のレベルｎに対して複数の両者の組み合わせが対応していてもよい。
【００５６】
本実施形態では温水回路１は床暖房装置５を通る床暖房回路１６を含んでいたが、他の実施形態として床暖房回路１６に加え、回路１２から分岐し、温水回路１の温水を熱源とする温水式温風暖房器（図示略）を経た上で、回路１７に合流する温風暖房回路（図示略）を含んでいてもよい。
【図面の簡単な説明】
【図１】第１実施形態の温水式床暖房システムの構成説明図
【図２】第１実施形態の温水式床暖房システムの機能説明図
【図３】第１実施形態の温水式床暖房システムによる室温制御の説明図
【図４】第２実施形態の温水式床暖房システムの機能説明図
【符号の説明】
１‥温水回路、２‥バーナ（加熱手段）、３１‥設定ボタン（温度設定手段）、４‥制御ユニット（制御手段）、５‥床暖房装置[0001]
BACKGROUND OF THE INVENTION
The present invention includes a heating circuit in which water passing through the inside is heated by a heating means, and a warm water circuit including a floor heating circuit that heats the room using hot water that is disposed on the floor surface of the room and passes through the interior as a heat source, A circulating pump for circulating hot water in the hot water circuit, an open / close valve provided in the hot water circuit, which permits or prohibits the flow of hot water to the floor heating circuit by opening or closing the valve, and sets the temperature in the room Based on the temperature deviation ΔT (= T−T ′) between the room temperature setting means, the room temperature measuring means for measuring the room temperature, the set room temperature T ′ by the room temperature setting means and the room temperature T measured by the room temperature measuring means, The present invention relates to a hot water floor heating system including control means for controlling the amount of heating of the heating circuit by the heating means to the water and the opening time of the on-off valve.
[0002]
[Prior art]
In the hot water type floor heating system, the warm water generated by heating the water in the heating circuit by the heating means circulates in the hot water circuit by the operation of the circulation pump, and heat is supplied to the room through the floor heating circuit to perform the floor heating operation. Is done.
[0003]
After the start of the floor heating operation, the floor heating operation is continued for a certain period of time such as 30 minutes in a state where the water temperature of the hot water circuit downstream of the heating circuit and upstream of the floor heating circuit is controlled to a high temperature such as 72 ° C. . This is because the room temperature is raised in a short time from the start of the floor heating operation and the room is quickly warmed.
[0004]
Subsequent to the initial floor heating operation for a certain period of time, based on the temperature deviation ΔT (= T−T ′) between the measured room temperature T and the set room temperature T ′, the floor heating circuit is provided downstream of the heating circuit according to the table shown in Table 1. The water temperature of the hot water circuit upstream of and the opening / closing time of the on-off valve every one cycle (20 minutes) are controlled.
[0005]
[Table 1]

[0006]
As shown in Table 1, the control of the valve opening time in one cycle (20 minutes) is different between the case where the water temperature of the hot water circuit is controlled to 60 ° C and the case where the water temperature is controlled to 72 ° C. The case where is controlled to 72 ° C. will be described. First, when the floor heating operation time is still short and the room temperature T is low and the deviation ΔT is −1 ° C. or less, the valve opening time is set to 10 minutes in one cycle (see Table 1 (10)). Thereby, heat moves from the hot water flowing through the floor heating circuit to the room, and the room temperature T gradually rises. When the room temperature T approaches the set room temperature T ′ and the deviation ΔT is −0.2 ° C. or more and 0.2 ° C. or less, the valve opening time is set to 8 minutes in one cycle (Table 1). (See (7)).
[0007]
[Problems to be solved by the invention]
However, the amount of heat escaping from the room to the outside varies depending on various factors such as the structure and size of the room, the material of the structure, and the outside air temperature. Therefore, if the floor heating operation is performed for a certain period of time with the water temperature of the hot water circuit uniformly increased after the start of the floor heating operation, the room temperature may increase excessively. There is also a risk that it will fall.
[0008]
Further, when the temperature deviation ΔT is −0.2 ° C. ≦ ΔT ≦ 0.2 ° C., if the valve opening time is uniformly set to 8 minutes, the room temperature T is excessively lowered or increased as viewed from the set temperature T ′. There is a case to do. For this reason, a person in the room may feel uncomfortable that the room temperature T is controlled to deviate from the set temperature T ′.
[0009]
Then, this invention makes it a solution subject to provide the warm water type floor heating system which can control room temperature so that it may correspond with preset temperature more reliably.
[0010]
[Means for Solving the Problems]
In the hot water type floor heating system according to the first aspect of the present invention for solving the above-described problem, the temperature deviation ΔT (= T−T ′) is a threshold value (<0) after the control means starts the floor heating operation. Until the temperature deviation exceeds the threshold, and if the temperature deviation ΔT exceeding the threshold exceeds a first predetermined value (> 0), the level of the previous heat dissipation is reduced, 2 When the value is below a predetermined value (<0), the previous heat release level is increased. When the value is less than the first predetermined value and above the second predetermined value, the previous heat release level is maintained and increased, reduced or maintained. The amount of heating of the heating circuit to the water by the heating means and the opening time of the on-off valve are controlled according to the level. Further, in the hot water type floor heating system according to the second aspect of the present invention for solving the above-mentioned problem, the temperature deviation ΔT (= T−T ′) is a threshold value (< 0), when the temperature deviation ΔT, which is intermittently determined after exceeding the threshold value, exceeds the first predetermined value (> 0), immediately before When the temperature deviation ΔT, which is intermittently determined as the heat radiation level is reduced, falls below the second predetermined value (<0), the previous heat radiation level is reduced. When the temperature deviation ΔT, which is increased and intermittently determined after the reduction or increase of the heat radiation level, becomes less than the first predetermined value and greater than or equal to the second predetermined value, the level of the immediately previous heat dissipation amount It is characterized by maintaining.
[0011]
According to the present invention, the level of the heat dissipation amount can be updated according to the degree of increase or decrease of the temperature deviation ΔT (= T−T ′), and the heating means is set according to the updated heat dissipation level. The amount of heating and the opening / closing time of the on-off valve are controlled. The degree of rise or fall of temperature deviation ΔT (the degree of rise or fall of measured room temperature T with reference to set room temperature T ′) varies depending on various conditions such as the size of the room, the amount of heat escaping to the outside, and the outdoor temperature. Therefore, the level of the heat radiation amount can be set in a form according to the various conditions, and thus the room temperature can be stably controlled to the set temperature.
[0014]
According to the present invention, the heat release level is appropriately updated in accordance with various conditions such as the amount of heat that escapes to the outside according to the degree of rise / fall after the temperature deviation ΔT rises to the threshold value, and thus room temperature. T can be stably controlled to the set room temperature T ′.
[0015]
In the present invention, the control means sets the level of the heat radiation amount to the highest level after the start of the floor heating operation, and the temperature deviation ΔT (= T−T ′) exceeds the threshold value (<0). The level is lowered from the highest level.
[0016]
According to the present invention, since the heat radiation amount is set to the highest level after the start of the floor heating operation, the room temperature can be rapidly increased. Moreover, since the level of the heat dissipation amount is lowered after the temperature deviation reaches the threshold value, the heat dissipation amount is maintained at the maximum level for a longer time than necessary, and the room temperature T is excessively higher than the set room temperature T ′. The situation of rising can be avoided.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a hot water type floor heating system of the present invention will be described with reference to the drawings. FIG. 1 is a configuration explanatory diagram of the hot water floor heating system of the first embodiment, FIG. 2 is a functional explanatory diagram of the hot water floor heating system of the first embodiment, and FIG. 3 is a hot water type of the first embodiment. It is explanatory drawing of the room temperature control by a floor heating system, and FIG. 4 is functional explanatory drawing of the hot water type floor heating system of 2nd Embodiment.
[0018]
The hot water type floor heating system shown in FIG. 1 includes a hot water circuit 1, a burner (heating means) 2, a remote controller 3 provided in a room where floor heating operation is performed, various settings, and settings in the remote controller 3. And a control unit (control means) 4 for controlling the amount of heating of the burner 2 and the like.
[0019]
The hot water circuit 1 includes a heating circuit 11 in which water passing through the inside is heated by the burner 2 and a floor heating circuit 16 that warms the room using hot water passing through the inside of the floor heating device 5 provided in the room as a heat source. Include as. The hot water circuit 1 includes a circuit 12 that extends from the downstream of the heating circuit 11 to a cistern 13 that absorbs the expansion and contraction of the hot water in the hot water circuit 1, a circuit 14 that reaches the upstream of the heating circuit 11 from the cistern 13, and a circuit 14 A circuit 15 that branches from the upstream side of the floor heating circuit 16 and a circuit 17 that extends from the downstream side of the floor heating circuit 16 and merges with the circuit 12 are included as components.
[0020]
The circuit 14 of the hot water circuit 1 is provided with a circulation pump 141 that circulates the hot water in the hot water circuit 1 upstream from the branch position of the circuit 15. The circuit 15 of the hot water circuit 1 is provided with a thermal valve (open / close valve) 151 that opens and closes when energization / energization stops, thereby permitting / prohibiting the flow of hot water to the floor heating circuit 16. Yes. The circuit 15 of the hot water circuit 1 is provided with a hot water supply thermistor 152 that measures the temperature of the hot water supplied to the floor heating circuit 16 upstream of the thermal valve 151.
[0021]
The burner 2 is supplied with combustion air by the fan 21 and burns when the gas supplied from the gas passage 22 is ignited. The gas passage 22 is provided with an original gas solenoid valve 221, a gas solenoid valve 222, and a gas control valve 223 in order from the upstream.
[0022]
The remote controller 3 has a setting button (room temperature setting means) 31 that can set the room temperature based on a display on a liquid crystal panel (not shown), a room temperature sensor (room temperature measuring means) 32 that measures the room temperature, and ON of the floor heating operation. An operation switch 33 for switching between / OFF is provided.
[0023]
The control unit 4 includes storage means 41 for storing a table (see the following Table 2) and the like showing the relationship between the heat radiation amount level n, the water temperature of the hot water circuit 1 in the circuit 15, and the energization time to the thermal valve 152. ing.
[0024]
[Table 2]

[0025]
Further, the control unit 4 sets one level n based on the temperature deviation ΔT (= T−T ′) between the set room temperature T ′ by the setting button 31 of the remote controller 3 and the measured room temperature T by the room temperature sensor 32 as described later. Level setting means 42 for controlling, the heating amount control means 43 for controlling the water temperature of the hot water circuit 1 indirectly by controlling the heating amount by the burner 2 according to the set level n, and the thermal valve according to the set level n On-off valve control means 44 for controlling the valve opening time by controlling the energization time to 151 is provided.
[0026]
The function of the hot water floor heating system having the above-described configuration will be described with reference to FIG.
[0027]
When the operation switch 33 is turned on in the remote controller 3, first, the level setting means 42 sets the level n to "12 (highest level)" (s102). In response to this, the heating amount control means 43 determines the target combustion amount of the burner 2 so that the measured water temperature by the hot water supply thermistor 152 becomes 72 ° C., and the rotation speed of the fan 21 is determined according to the target combustion amount through the fan current. And the opening of the gas control valve 223 is controlled to an opening corresponding to the target combustion amount. Further, the gas supplied from the gas passage 22 to the burner 2 is ignited through an igniter and an ignition electrode (not shown), combustion air is supplied from the fan 21, and the burner 2 starts combustion.
[0028]
Next, the level setting means 42 determines whether or not the temperature deviation ΔT exceeds −3 ° C. (threshold) in order to determine whether or not the level n should be maintained at 12 (the highest level) ( s104). Subsequently, when the temperature deviation ΔT exceeds −3 ° C. (threshold) (YES in s104), the level setting means 42 decreases the level n from 12 (the highest level) to 10 (s106). At this time, the level n may be appropriately reduced to 8 or 9 instead of 10.
[0029]
Next, the level setting means 42 switches the level n from 12 to 10 (see s106), and then periodically (1) determines whether the temperature deviation ΔT is less than −5 ° C. every 20 minutes, (2) Whether the temperature deviation ΔT is −5 ° C. or more and less than −0.2 ° C. (second predetermined value), (3) −0.2 ° C. (second predetermined value) or more and 0.2 ° C. (first It is determined whether it is below (predetermined value) or exceeds (4) 0.2 ° C. (first predetermined value) (s108, s110, s120).
[0030]
If the room temperature T drops sharply due to the opening of the window for ventilation, etc. and (1) the temperature deviation ΔT falls below −5 ° C. (YES in s108), the level setting means 42 sets the level n to “12” again. (S102).
[0031]
If the temperature deviation ΔT is −5 ° C. or more and less than −0.2 ° C. (NO in s108, YES in s110), the level setting means 42 determines whether the level n is 11 or less (set the level n to n + 1). It is determined whether it can be increased (s112). At this time, if the level n is 11 or less (the level n can be increased to n + 1) (YES in s112), the level n is increased to n + 1 (s114). On the other hand, if the level n is 12 (the level n cannot be increased to n + 1) (NO in s112), the level n is maintained at 12 as it is (s124).
[0032]
Further, the level setting means 42 maintains the level n as it is when the temperature deviation ΔT is −0.2 ° C. or more and 0.2 ° C. or less (NO in s110, YES in s120) (s124).
[0033]
Further, the level setting means 42, (4) if the temperature deviation ΔT exceeds 0.2 ° C. (NO in s110 and s120), whether or not the level n is 2 or more (the level n is set to n−1). It is determined whether or not it can be decreased (s132). At this time, if the level n is 2 or more (the level n can be reduced to n-1) (YES in s132), the level n is reduced to n-1 (s134). On the other hand, if the level n is 1 (the level n cannot be reduced to n-1) (NO in s132), the level n is maintained at 1 as it is (s124).
[0034]
According to the level n set by the level setting means 42, the heating amount control means 43 indirectly controls the water temperature by controlling the heating amount of the burner 2 based on the water temperature measured by the hot water supply thermistor 152 according to Table 2. To control. Moreover, the on-off valve control means 44 indirectly controls the valve opening time of the thermal valve 151 by controlling the energization time to the thermal valve 151.
[0035]
As described above, how the room temperature T is controlled by setting the heat radiation level n by the level setting means 42 will be described with reference to FIG.
[0036]
After the floor heating operation is executed at level n = 12, and the temperature deviation ΔT exceeds −3 ° C., the room temperature T rises above the set temperature T ′ to the extent that the temperature deviation ΔT exceeds + 0.2 ° C. (arrow) A).
[0037]
At this time, how much the room temperature T increases depends on various conditions such as the size of the room, the airtightness, and the outdoor temperature. For example, in a narrow room or a room with high airtightness, the room air temperature rises greatly beyond the set temperature T ′ because the heat capacity of the room air is small and the amount of heat escaping outside the room is small. In this case, the state where the temperature deviation ΔT exceeds 0.2 ° C. continues for a long time, and the number of times that the level n is decreased by the level setting means 42 (see s134 in FIG. 2) becomes relatively large. On the other hand, in a large room or a room with low airtightness, the heat capacity of the room air is large, and the amount of heat that escapes to the outside is large. In this case, the state where the temperature deviation ΔT exceeds 0.2 ° C. is completed in a relatively short time, and the number of times the level n is reduced by the level setting means 42 (see s134 in FIG. 2) is relatively small.
[0038]
By reducing the level n, the water temperature of the hot water circuit 1 is lowered by the heating amount control means 43, or the opening time of the on / off valve 151 is shortened by the on / off valve control means 44, and the floor heating circuit 16 The amount of heat released to is reduced. For this reason, the room temperature T changes from rising to falling, and falls below the set temperature T ′ so that the temperature deviation ΔT exceeds + 0.2 ° C. (see arrow B).
[0039]
At this time, how much the room temperature T decreases depends on various conditions such as room size, airtightness, outdoor temperature, and the like. For example, in a narrow room or a room with low airtightness, the room air has a small heat capacity and a large amount of heat escapes to the outside, so that the room temperature T falls below the set temperature T ′ and greatly decreases. In this case, the state where the temperature deviation ΔT falls below −0.2 ° C. continues for a long time, and the number of times that the level n is increased by the level setting means 42 (see s114 in FIG. 2) becomes relatively large. On the other hand, in a large room or a room with high airtightness, the heat capacity of the room air is large and the amount of heat escaping outside the room is small, so that the room temperature T is less than the set temperature T ′. In this case, the state where the temperature deviation ΔT falls below −0.2 ° C. is completed in a relatively short time, and the number of times the level n is increased by the level setting means 42 (see s114 in FIG. 2) is relatively small.
[0040]
When the level n is increased, the water temperature of the hot water circuit 1 is increased by the heating amount control means 43, or the opening time of the on / off valve 151 is extended by the on / off valve control means 44, so that the floor heating circuit 16 The amount of heat released to increases. For this reason, the room temperature changes from a decrease to an increase, and thereafter, the level n is repeatedly decreased and increased by the level setting means 42 as described above (see s114 and s134 in FIG. 2). As a result, the room temperature T also repeatedly rises and falls (see arrow C). After that, when the temperature deviation ΔT becomes stable at −0.2 ° C. or more and 0.2 ° C. or less, the level n is not increased or decreased by the level setting means 42 but is maintained as it is (see s124 in FIG. 2). This stabilizes the room temperature T near the set temperature T ′ (see arrow D).
[0041]
According to the hot water type floor heating system of the present embodiment, after the start of the floor heating operation, the heat radiation level n is set to 12 (the highest level) (see FIG. 2 s102), and the room temperature T is quickly increased. (See arrow A in FIG. 3). Further, after the room temperature T rises and the temperature deviation ΔT exceeds −3 ° C. (threshold), the level n is lowered (see s106 in FIG. 2). Therefore, it is possible to avoid a situation in which the level n of the heat dissipation amount is maintained at 12 (the highest level) for an unnecessarily long time, and the room temperature T rises excessively from the set room temperature T ′.
[0042]
Furthermore, the level n is set based on the temperature deviation ΔT, but the degree of increase or decrease in the temperature deviation ΔT depends on various conditions such as the amount of heat that escapes from the room to the outside. It can be set in the form (see FIG. 2 s114, s124, s134). Further, based on the level, the heating amount control means 43 controls the heating amount of the burner 2, and consequently the water temperature of the hot water circuit 1, and the opening / closing valve control means 44 controls the valve opening time (energization time). Thus, the room temperature T can be stably controlled to the set temperature T ′ (see arrow D in FIG. 3).
[0043]
Moreover, since the room temperature of the room in various environments can be controlled by the table stored in the storage means 41 (see Table 2), a plurality of tables (corresponding to differences in floor materials such as tatami mats, flooring, stones, etc.) The storage capacity of the storage means 41 required for the table storage for room temperature control can be saved as compared with the case where Table 1 is stored.
[0044]
Next, a second embodiment of the hot water type floor heating system of the present invention will be described. Since the configuration of the system of the second embodiment is the same as that of the system of the first embodiment shown in FIG. According to the system of the second embodiment, the room temperature T is controlled by the procedure shown in FIG.
[0045]
The procedures s202 to s206 shown in FIG. 4 are the same as the procedures s102 to 104 shown in FIG. The second embodiment differs from the first embodiment in that the increase / decrease width of the level n may be “2” as well as “1”.
[0046]
Specifically, after the level n is switched from 12 to 10 (see s206), (1) whether the temperature deviation ΔT is periodically below −5 ° C. every 20 minutes, or (2) the temperature deviation ΔT Is -5 ° C or higher and lower than -3 ° C, (3) -3 ° C or higher and lower than -0.2 ° C, or (4) -0.2 ° C or higher and 0.2 ° C or lower. (5) It is judged whether it exceeds 0.2 ° C. and below 3 ° C., or (6) it exceeds 3 ° C. (s108, s210, s220, s230, s240).
[0047]
When the room temperature T drops sharply because the window is opened for ventilation, etc., and (1) the temperature deviation ΔT falls below −5 ° C. (YES in s208), the level setting means 42 sets the level n to “12” again. (S202).
[0048]
Level setting means 42: (2) If temperature deviation ΔT is −5 ° C. or more and below −0.2 ° C. (NO in s208, YES in s210), whether level n is 10 or less (set level n to n + 2) It is determined whether or not the increase is possible (s212). At this time, if the level n is 10 or less (the level n can be increased to n + 2) (YES in s212), the level n is increased to n + 2 (s114). On the other hand, if level n is 11 or 12 (level n cannot be increased to n + 2) (NO in s112), it is further determined whether level n is 11 or less (whether it can be increased to level n + 1). (S222).
[0049]
Further, the level setting means 42 determines whether or not the level n is 11 or less when the temperature deviation ΔT is −3 ° C. or more and below −0.2 ° C. (NO in s210, YES in s220). It is determined whether or not it can be increased to n + 1 (s222). At this time, if the level n is 11 or less (the level n can be increased to n + 1) (YES in s222), the level n is increased to n + 1 (s114). On the other hand, if the level n is 12 (the level n cannot be increased to n + 1) (NO in s112), the level n is maintained at 12 as it is (s222).
[0050]
Furthermore, the level setting means 42 maintains the level n as it is when the temperature deviation ΔT is −0.2 ° C. or more and 0.2 ° C. or less (NO in s220, YES in s230) (s234).
[0051]
Further, the level setting means 42 determines whether the level n is 2 or more (level n) when the temperature deviation ΔT exceeds 0.2 ° C. and is 3 ° C. or less (NO in s230, YES in s240). (S242). At this time, if the level n is 2 or more (the level n can be reduced to n-1) (YES in s242), the level n is reduced to n-1 (s244). On the other hand, if the level n is 1 (the level n cannot be reduced to n-1) (NO in s242), the level n is maintained at 1 as it is (s234).
[0052]
Further, the level setting means 42 determines whether the level n is 3 or more (whether the level n can be reduced to n−2) when the temperature deviation ΔT exceeds 3 ° C. (NO in s240). Determine (s252). At this time, if the level n is 3 or more (the level n can be reduced to n-2) (YES in s252), the level n is reduced to n-2 (s254). On the other hand, if the level n is 1 or 2 (the level n cannot be reduced to n-2) (NO in s252), it is determined whether or not the original can be written in the level n to n-1 (s244). .
[0053]
Hereinafter, in the same manner as in the first embodiment, according to the level n set by the level setting means 42, the heating amount control means 43 is based on the water temperature measured by the hot water supply thermistor 152 according to the above Table 2 and the heating amount of the burner 2. The water temperature is indirectly controlled by controlling. Moreover, the on-off valve control means 44 indirectly controls the valve opening time of the thermal valve 151 by controlling the energization time to the thermal valve 151.
[0054]
According to the system of the second embodiment, the level n is appropriately increased or decreased by the width “2” larger than 1 (see s214 and s254 in FIG. 4). Accordingly, the convergence speed to the set room temperature T ′ is increased while the room temperature T repeatedly increases and decreases (see arrows B and C in FIG. 3), and the room temperature T can be quickly converged to the set room temperature T ′ (see arrow D in FIG. 3). reference).
[0055]
In the first and second embodiments, the combination of the water temperature (warm water temperature) of the hot water circuit 16 and the energization time (up to valve opening time) of the thermal valve 151 with respect to one level n in the table shown in FIG. However, as another embodiment, for example, level “9” corresponds to hot water temperature = 60 ° C., energization time = 19 minutes, hot water temperature = 72 ° C., energization time = 13 minutes, etc. A plurality of combinations may correspond to one level n.
[0056]
In this embodiment, the hot water circuit 1 includes the floor heating circuit 16 that passes through the floor heating device 5. However, as another embodiment, the hot water circuit 1 branches from the circuit 12 in addition to the floor heating circuit 16, and the hot water of the hot water circuit 1 is used as a heat source. A hot air heating circuit (not shown) that merges with the circuit 17 after passing through a hot water hot air heater (not shown) may be included.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration of a hot water floor heating system according to a first embodiment. FIG. 2 is a functional diagram illustrating a hot water floor heating system according to a first embodiment. FIG. 3 is a diagram illustrating functions of the hot water floor heating system according to the first embodiment. Explanatory diagram of room temperature control by using [FIG. 4] Functional explanatory diagram of the hot water floor heating system of the second embodiment [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Hot water circuit, 2 ... Burner (heating means), 31 ... Setting button (temperature setting means), 4 ... Control unit (control means), 5 ... Floor heating device

Claims

A hot water circuit including a heating circuit in which water passing through the interior is heated by the heating means, and a floor heating circuit that is arranged on the floor surface of the room and warms the room using hot water passing through the interior as a heat source;
A circulation pump for circulating hot water in the hot water circuit;
An on-off valve provided in the hot water circuit, which permits or prohibits the flow of hot water to the floor heating circuit by opening or closing the valve;
Room temperature setting means for setting the temperature in the room;
Room temperature measuring means for measuring the temperature in the room;
Based on the temperature deviation ΔT (= T−T ′) between the set room temperature T ′ by the room temperature setting means and the measured room temperature T by the room temperature measuring means, the amount of heating of the heating circuit to the water by the heating means, and the opening and closing A hot water floor heating system comprising a control means for controlling a valve opening time,
The control means maintains a level of the heat radiation amount until the temperature deviation ΔT (= T−T ′) exceeds a threshold value (<0) after the floor heating operation is started, and exceeds the threshold value. Further, when the temperature deviation ΔT exceeds the first predetermined value (> 0), the level of the immediately preceding heat dissipation amount is reduced, and when the temperature deviation ΔT is less than the second predetermined value (<0), the immediately preceding heat dissipation amount level is increased. In the case of the first predetermined value or less and the second predetermined value or more, the level of the previous heat release amount is maintained, and the heating amount of the heating circuit to the water by the heating means according to the level increased, reduced or maintained, A hot water floor heating system, characterized by controlling a valve opening time of the on-off valve.

A hot water circuit including a heating circuit in which water passing through the interior is heated by the heating means, and a floor heating circuit that is arranged on the floor surface of the room and warms the room using hot water passing through the interior as a heat source;
A circulation pump for circulating hot water in the hot water circuit;
An on-off valve provided in the hot water circuit, which permits or prohibits the flow of hot water to the floor heating circuit by opening or closing the valve;
Room temperature setting means for setting the temperature in the room;
Room temperature measuring means for measuring the temperature in the room;
Based on the temperature deviation ΔT (= T−T ′) between the set room temperature T ′ by the room temperature setting means and the measured room temperature T by the room temperature measuring means, the amount of heating of the heating circuit to the water by the heating means, and the opening and closing A hot water floor heating system comprising a control means for controlling a valve opening time,
The control means maintains a level of the heat radiation amount until the temperature deviation ΔT (= T−T ′) exceeds a threshold value (<0) after the floor heating operation is started, and exceeds the threshold value. After that, when the temperature deviation ΔT determined intermittently exceeds the first predetermined value (> 0), the level of the immediately preceding heat release amount is reduced, and is determined intermittently with the reduction of the heat release level. When the temperature deviation ΔT decreases and falls below the second predetermined value (<0), the level of the immediately preceding heat release amount is increased, and is determined intermittently after the heat release amount level is reduced or decreased and increased. When the temperature deviation ΔT is equal to or lower than the first predetermined value and equal to or higher than the second predetermined value, the level of the heat radiation immediately before is maintained.

The control means sets the level of the heat dissipation amount to the highest level after the start of the floor heating operation, and when the temperature deviation ΔT (= T−T ′) exceeds the threshold value (<0), the control unit sets the level. The hot water floor heating system according to claim 1 or 2, wherein the temperature is lowered from the highest level.