JP3963823B2

JP3963823B2 - Air conditioning system

Info

Publication number: JP3963823B2
Application number: JP2002339469A
Authority: JP
Inventors: 勘十橋上; 明哉野尻; 秀司入江
Original assignee: Taikisha Ltd
Current assignee: Taikisha Ltd
Priority date: 2002-11-22
Filing date: 2002-11-22
Publication date: 2007-08-22
Anticipated expiration: 2022-11-22
Also published as: JP2004170045A

Description

【０００１】
【発明の属する技術分野】
本発明は、薬品の製造施設や半導体電子部品の製造施設など、複数室に対する室圧管理が必要な施設で用いる空調システムに関し、詳しくは、ファンを介装した給気側又は排気側の主風路に複数の対象室を分岐風路を介し並列に接続して、これら分岐風路のそれぞれにダンパを設け、対象室それぞれの検出室圧と設定室圧との偏差に応じダンパの開度を調整して対象室それぞれの室圧を設定室圧に調整するダンパ制御と、このダンパ制御においてダンパが設定適正開度になるように、ダンパの検出開度に応じファンの出力を調整して主風路の風路圧を変更する風路圧調整制御とを実行する制御手段を設ける空調システムに関する。
【０００２】
【従来の技術】
この種の空調システムは、上記の風路圧調整制御により、上記のダンパ制御上において各分岐風路のダンパが設定適正開度になるようにすることで、そのダンパ制御による各対象室の室圧調整を良好に行なえるようにしたものであり、従来、この種の空調システムでは、隣接する対象室を区画する室壁に設けられた扉の開閉状態に関わらず、風路圧調整制御を通常の制御動作で実行させていた（例えば、特許文献１参照。）。
【０００３】
【特許文献１】
特開２０００−３１４５４５号公報
【０００４】
【発明が解決しようとする課題】
しかし、この従来のシステムでは、例えば、排気側の主風路にファンを介装し、かつ、排気側の分岐風路にダンパを設ける構成で、隣接する対象室において設定室圧の低い側の対象室（低圧室）の方が設定室圧の高い側の対象室（高圧室）よりも換気回数が少ない場合、それらの間の扉が開き状態となると、低圧室の室圧が大幅に上昇するため、ダンパ制御により低圧室のダンパが排気風量の増大側である開き側に動作して設定適正開度から逸脱し、これに対し、ダンパ開度検出に基づく風路圧調整制御によりファンの出力が増大する側に調整されて、排気側主風路の風路圧が低下する。そして、この主風路の風路圧低下により、高圧室や他の対象室のダンパがダンパ制御上で排気風量の減少側である閉じ側に大きく動作して設定適正開度から逸脱し、これに対し、風路圧調整制御によりファン出力が減少する側に調整されて、排気側主風路の風路圧は上昇する。そして再び、ダンパ制御により低圧室のダンパは設定適正開度から開き側に逸脱し、これに対し、風路圧調整制御によりファンの出力が再度増大する側に調整されるといったことが生じる場合がある。
このようなシステムの不安定化により、対象室の室圧を設定室圧に維持することが困難になり、また、このような不安定状態を繰り返す悪循環から、室圧調整が不能なハンチング状態に陥り、それによって、システム全体が機能しなくなってしまう恐れもある。
同様に、隣接する対象室において設定室圧の低い側の対象室（低圧室）の方が設定室圧の高い側の対象室（高圧室）よりも換気回数が多い場合、それらの間の扉が開き状態となると、高圧室の室圧が大幅に低下するため、ダンパ制御により高圧室のダンパが排気風量の減少側である閉じ側に動作して設定適正開度から逸脱し、これに対し、ダンパ検出開度に基づく風路圧調整制御によりファンの出力が減少する側に調整されて、排気側主風路の風路圧が上昇する。そして、この主風路の風路圧上昇により、低圧室や他の対象室のダンパがダンパ制御上で排気風量の増大側である開き側に大きく動作して設定適正開度から逸脱し、これに対し、風路圧調整制御によりファン出力が増大する側に調整されて、排気側主風路の風路圧は低下する。そして再び、ダンパ制御により高圧室のダンパは設定適正開度から閉じ側に逸脱し、これに対し、風路圧調整制御によりファンの出力が再度減少する側に調整されるといったことを繰り返し、システムが不安定な状態となる。
また、給気側の主風路にファンを介装し、かつ、給気側の分岐風路にダンパを設ける構成についても同様の問題が生じる。
【０００５】
この実情に鑑み、本発明の主たる課題は、合理的な改良をもって上記問題を効果的に解消する点にある。
【０００６】
【課題を解決するための手段】
〔１〕請求項１に係る発明は空調システムに係り、その特徴は、
ファンを介装した給気側又は排気側の主風路に複数の対象室を分岐風路を介し並列に接続して、これら分岐風路のそれぞれにダンパを設け、
前記対象室それぞれの検出室圧と設定室圧との偏差に応じ前記ダンパの開度を調整して前記対象室それぞれの室圧を設定室圧に調整するダンパ制御と、
このダンパ制御において前記ダンパが設定適正開度になるように、前記ダンパの検出開度に応じ前記ファンの出力を調整して前記主風路の風路圧を変更する風路圧調整制御とを実行する制御手段を設ける空調システムであって、
隣接する前記対象室を区画する室壁に設けられた扉の開閉を検出する検出手段を設け、
前記制御手段を、前記検出手段による検出情報に基づき、前記扉が開き状態にあることに応じて、前記風路圧調整制御の制御動作を制限する構成にしてある点にある。
【０００７】
この構成によれば、扉が開かれることによって対象室の室圧が大きく変動し、その室圧変動に対しダンパ制御によりその対象室のダンパの開度が調整され設定適正開度から逸脱しても、検出手段による扉開き状態の検出により風路圧調整制御の制御動作が制限されるので、風路圧調整制御によるファンの大幅な出力変更（詳しくは、その出力変更による主風路の風路圧変動）を原因とする他の対象室についてのダンパの設定適正開度からの逸脱を抑止することができる。
従って、従来のシステムにおいて起こりうる先述したシステムの不安定化を抑止することができ、また、システムがハンチング状態に陥ることも抑止できて、扉の開閉に関わらず、システム全体として安定した室圧調整状態を保つことができる。
【０００８】
〔２〕請求項２に係る発明は、請求項１に係る発明の実施に好適な実施形態を特定するものであり、その特徴は、
前記制御手段を、前記検出手段による検出情報に基づき、前記扉が設定遅延時間にわたり開き状態を維持されたときに前記風路圧調整制御の制御動作を制限する構成にしてある点にある。
【０００９】
つまり、この構成によれば、扉が開かれた時点で直ちに風路圧調整制御を制限するのではなく、設定遅延時間にわたり開き状態に維持されたときに風路圧調整制御を制限することで、ダンパ開度が設定適正開度から逸脱するには至らない短時間の扉の開閉に対しては風路圧調整制御を通常どおり実行させ、これによって、扉の開閉に対し必要以上に風路圧調整制御の制御動作を制限してしまうことを回避して、システム全体として安定した室圧調整状態を一層確実に保つことができる。
【００１０】
〔３〕請求項３に係る発明は、請求項１又は２に係る発明の実施に好適な実施形態を特定するものであり、その特徴は、
前記制御手段を、前記制御動作の制限として、前記風路圧調整制御を停止する構成にしてある点にある。
【００１１】
つまり、この構成によれば、検出手段による扉開き状態の検出に基づいて風路圧調整制御を停止することで、ファンの出力は各対象室のダンパの開度に関わらず一定に維持され、その状態の下で各対象室の室圧を設定室圧に調整するダンパ制御が独立した形態で実行されるので、風路圧調整制御によるファンの大幅な出力変更を原因とする他の対象室（扉の開きにより室圧が変動する対象室以外の対象室）についてのダンパの設定適正開度からの逸脱を抑止することができ、これにより、扉の開閉に関わらず、システム全体として安定した室圧調整状態を保つことができる。
【００１２】
〔４〕請求項４に係る発明は、請求項１又は２に係る発明の実施に好適な実施形態を特定するものであり、その特徴は、
前記制御手段を、前記制御動作の制限として、前記扉の開きにより連通する二つの対象室それぞれの前記ダンパのうちのいずれか一方、又は、両方を前記風路圧調整制御のための開度検出対象から除外する構成にしてある点にある。
【００１３】
つまり、この構成によれば、検出手段による扉開き状態の検出に基づいて、扉の開きにより連通する二つの対象室それぞれのダンパのうちのいずれか一方、又は、両方を風路圧調整制御のための開度検出対象から除外するので、扉の開きにより室圧変動の生じた対象室のダンパが設定適正開度から逸脱しても、風路圧調整制御によるファンの大幅な出力変更は行なわれず、これによって、主風路の風路圧が大きく変動することがないので、他の対象室のダンパが設定適正開度から逸脱することを抑止できる。
また、扉の開きにより室圧変動の生じた対象室以外の対象室についてのダンパの検出開度に基づいて風路圧調整制御は続行されるので、扉が開き状態にあるとき風路圧調整制御を停止する構成に比べて、他の対象室の室圧調整をより良好に行うことができる。
【００１４】
〔５〕請求項５に係る発明は、請求項１又は２に係る発明の実施に好適な実施形態を特定するものであり、その特徴は、
前記制御手段を、前記制御動作の制限として、前記風路圧調整制御における前記ファンの出力調整速度を低下させる構成にしてある点にある。
【００１５】
つまり、この構成によれば、検出手段による扉開き状態の検出により、風路圧調整制御によるファンの出力調整速度を低下させるので、扉の開きにより１つの対象室の室圧が変動してその対象室に対するダンパの開度が設定適正開度から逸脱しても、ファンの出力調整速度が緩慢であるため、主風路の風路圧の変動が緩慢になり、従って、他の対象室についてのダンパの開度変化も緩慢になり、これによって、それら他の対象室のダンパが設定適正開度から逸脱することを極力抑制することができ、システム全体として安定した室圧調整状態を保つことができる。
【００１６】
〔６〕請求項６に係る発明は、請求項１〜５のいずれか１項に係る発明の実施に好適な実施形態を特定するものであり、その特徴は、
前記制御手段を、前記検出手段による検出情報に基づき、前記扉が閉じ状態にあることに応じて、前記制御動作の制限を解除する構成にしてある点にある。
【００１７】
つまり、この構成によれば、検出手段による扉開き状態の検出により制限されていた風路圧調整制御の制御動作が、扉閉じ状態の検出により制限を解除されて通常の制御に復帰するので、再び風路圧調整制御によりダンパ制御上において各対象室のダンパが設定適正開度になるように調整され、その風路圧調整制御下でのダンパ制御により対象室の室圧調整が再び極めて良好に行われるようになる。
【００１８】
〔７〕請求項７に係る発明は、請求項６項に係る発明の実施に好適な実施形態を特定するものであり、その特徴は
前記制御手段を、前記検出手段による検出情報に基づき、前記扉を閉じた後、設定遅延時間を経過したとき前記制御動作の制限を解除する構成にしてある点にある。
【００１９】
扉が閉じられてすぐの時点では、扉の開きによる対象室の室圧変動により設定適正開度から逸脱したダンパが未だ設定適正開度に復帰していないことが多く、そのため、扉が閉じられた時点で直ちに風路圧調整制御の制御動作の制限を解除すると、その逸脱したダンパの開度検出に基づく風路圧調整制御によりファンの出力が大きく変更され主風路の風路圧が変動するので、扉の開きにより室圧変動を生じた対象室以外の対象室のダンパが設定適正開度から逸脱してしまう状態を誘発し、この点で、システムの不安定化を招来する恐れがある。
この構成では、扉を閉じた後、風路圧調整制御の制御動作の制限を解除するまでに設定遅延時間を経過させることで、扉の開きにより室圧変動した対象室に付いてのダンパの開度が設定適正開度ないしそれに近い開度に復帰した後に風路圧調整制御の制御動作の制限を解除することができるので、制限解除の早すぎによるシステムの不安定化を効果的に防止できる。
【００２０】
【発明の実施の形態】
図１は複数の対象室１に対する空調システムを示し、２は給気ファンＦｓを介装した給気側主風路、３は排気ファンＦｒを介装した排気側主風路であり、各対象室１は給気側分岐風路２ａを介して給気側主風路２に対し並列に接続するとともに、排気側分岐風路３ａを介して排気側主風路３に対し同じく並列に接続してある。また、４は対象室１への供給空気を温湿度調整する空調機である。
【００２１】
Ｖｓは給気側分岐風路２ａのそれぞれに介装した給気側ダンパ、５は給気側分岐風路２ａの通風量ｑｓを検出する通風量センサ、６Ａは給気側ダンパＶｓを制御する給気側ダンパ制御器であり、これら給気側ダンパ制御器６Ａは、通風量センサ５による検出通風量ｑｓと中央制御器ＣＣから指定される目標通風量ｑｓｓとの偏差Δｑｓに応じ給気側ダンパＶｓの開度を調整して各給気側分岐風路２ａの通風量ｑｓ（すなわち、各対象室１の換気風量）を目標通風量ｑｓｓに調整する給気側ダンパ制御を実行する。
【００２２】
Ｖｒは排気側分岐風路３ａのそれぞれに介装した排気側ダンパ、７は対象室１の室圧ｐ（具体的には基準圧力と室内圧力との差圧）を検出する室圧センサ、６Ｂは排気側ダンパＶｒを制御する排気側ダンパ制御器であり、これら排気側ダンパ制御器６Ｂは、室圧センサ７による検出室圧ｐと中央制御器ＣＣから指定される目標室圧ｐｓとの偏差Δｐに応じ排気側ダンパＶｒの開度を調整して各対象室１の室圧ｐを目標室圧ｐｓに調整する排気側ダンパ制御を実行する。
【００２３】
８ａは給気側主風路２の風路圧ｆｓを検出する給気側圧力センサ、９Ａは給気ファンＦｓを制御する給気側ファン制御器であり、この給気側ファン制御器９Ａは、給気側圧力センサ８ａによる検出風路圧ｆｓと中央制御器ＣＣから指定される給気側目標風路圧ｆｓｓとの偏差Δｆｓに応じインバータ制御により給気ファンＦｓの出力を調整して給気側主風路２の風路圧ｆｓを給気側目標風路圧ｆｓｓに調整する給気側ファン調整制御を実行する。
【００２４】
８ｂは排気側主風路３の風路圧ｆｒを検出する排気側圧力センサ、９Ｂは排気ファンＦｒを制御する排気側ファン制御器であり、この排気側ファン制御器９Ｂは、排気側圧力センサ８ｂによる検出風路圧ｆｒと中央制御器ＣＣから指定される排気側目標風路圧ｆｒｓとの偏差Δｆｒに応じインバータ制御により排気ファンＦｒの出力を調整して排気側主風路３の風路圧ｆｒを排気側目標風路圧ｆｒｓに調整する排気側ファン調整制御を実行する。
【００２５】
１０Ａ，１０Ｂは中央制御器ＣＣにおける給気側及び排気側の風路圧設定変更部であり、給気側の風路圧設定変更部１０Ａは、給気側ダンパ制御器６Ａによる前記の給気側ダンパ制御において給気側ダンパＶｓが所定の適正開度状態（本実施形態では図２に示すように上下限値ｘ１，ｘ２ともに中間開度値に設定してある給気側の目標中間開度範囲Ｘの範囲内に全ての給気側ダンパＶｓの開度ａ１〜ａ３が入っている状態）になるように、給気側ダンパＶｓそれぞれの検出開度ａ１〜ａ３に応じ給気側目標風路圧ｆｓｓを変更する給気側の風路圧設定変更制御を実行する。
【００２６】
また、排気側の風路圧設定変更部１０Ｂは、給気側と同様、排気側ダンパ制御器６Ｂによる前記の排気側ダンパ制御において排気側ダンパＶｒが所定の適正開度状態（本実施形態では同図２に示すように上下限値ｙ１，ｙ２ともに中間開度値に設定してある排気側の目標中間開度範囲Ｙの範囲内に全ての排気側ダンパＶｒの開度ｂ１〜ｂ３が入っている状態）になるように、排気側ダンパＶｒそれぞれの検出開度ｂ１〜ｂ３に応じ排気側目標風路圧ｆｒｓを変更する排気側の風路圧設定変更制御を実行する。
【００２７】
つまり、本実施形態では、給気側分岐風路２ａの通風量ｑｓを調整する給気側ダンパ制御の実施下において、上記のように給気側の風路圧調整制御としての風路圧設定変更制御及び給気側ファン調整制御により給気側ダンパＶｓの開度ａ１〜ａ３が全て給気側の目標中間開度範囲Ｘ（ダンパ特性上で風量調整機能に優れた開度範囲）に入るようにすることで、その給気側ダンパ制御による通風量調整（対象室１に対する換気風量調整）を感度面及び精度面で良好に行なえるようにする。
【００２８】
また同様に、対象室１の室圧ｐを調整する排気側ダンパ制御の実施下において、上記のように排気側の風路圧調整制御としての風路圧設定変更制御及び排気側ファン調整制御により排気ダンパＶｒの開度ｂ１〜ｂ３が全て排気側の目標中間開度範囲Ｙ（ダンパ特性上で室圧調整機能に優れた開度範囲）に入るようにすることで、その排気側ダンパ制御による室圧調整を感度面及び精度面で良好に行なえるようにする。
【００２９】
給気側の風路圧設定変更制御において給気側の風路圧設定変更部１０Ａは、具体的には、給気側ダンパＶｓの検出開度ａ１〜ａ３のうち最大のものが給気側の目標中間開度範囲Ｘを大開度側に逸脱しているとき給気側目標風路圧ｆｓｓを上昇側に変更し、給気側ダンパＶｓの検出開度ａ１〜ａ３のうち最小のものが給気側の目標中間開度範囲Ｘを小開度側に逸脱しているとき給気側目標風路圧ｆｓｓを低下側に変更し、給気側ダンパＶｓの検出開度ａ１〜ａ３が全て給気側の目標中間開度範囲Ｘの範囲にあるとき（図２に示す状態）には給気側目標風路圧ｆｓｓを現状値に維持する。
【００３０】
すなわち、給気側ダンパＶｓの検出開度ａ１〜ａ３のうち最大のものが給気側の目標中間開度Ｘを大開度側に逸脱しているときは、給気側目標風路圧ｆｓｓを上昇側へ変更することにより、給気側ファン調整制御上で給気ファンＦｓの出力を増大する側に調整させて、この増大側へのファン出力調整に対し給気側ダンパ制御上で給気側ダンパＶｓのそれぞれが閉じ側に開度調整されるようにし、また逆に、給気側ダンパＶｓの検出開度ａ１〜ａ３のうち最小のものが給気側の目標中間開度範囲Ｘを小開度側に逸脱しているときは、給気側目標風路圧ｆｓｓの低下側へ変更することにより、給気側ファン調整制御上で給気ファンＦｓの出力を減少する側に調整させて、この減少側へのファン出力調整に対し給気側ダンパ制御上で給気側ダンパＶｓの開度ａ１〜ａ３が全て給気側の目標中間開度範囲Ｘに入るように（すなわち、給気側ダンパＶｓが適正開度状態になるように）する。
【００３１】
一方、排気側の風路圧設定変更制御において排気側の風路圧設定変更部１０Ｂは、具体的には、排気側ダンパＶｒの検出開度ｂ１〜ｂ３のうち最大のものが排気側の目標中間開度範囲Ｙを大開度側に逸脱しているとき排気側目標風路圧ｆｒｓを低下側に変更し、排気側ダンパＶｒの検出開度ｂ１〜ｂ３のうち最小のものが排気側の目標中間開度範囲Ｙを小開度側に逸脱しているとき排気側目標風路圧ｆｒｓを上昇側に変更し、排気側ダンパＶｒの検出開度ｂ１〜ｂ３が全て排気側の目標中間開度範囲Ｙの範囲にあるとき（図２に示す状態）には排気側目標風路圧ｆｒｓを現状値に維持する。
【００３２】
すなわち、排気側ダンパＶｒの検出開度ｂ１〜ｂ３のうち最大のものが排気側の目標中間開度Ｙを大開度側に逸脱しているときは、排気側目標風路圧ｆｒｓを低下側へ変更することにより、排気側ファン調整制御上で排気ファンＦｒの出力を増大する側に調整させて、この増大側へのファン出力調整に対し排気側ダンパ制御上で排気側ダンパＶｒのそれぞれが閉じ側に開度調整されるようにし、また逆に、排気側ダンパＶｒの検出開度ｂ１〜ｂ３のうち最小のものが排気側の目標中間開度範囲Ｙを小開度側に逸脱しているときは、排気側目標風路圧ｆｒｓの上昇側へ変更することにより、排気側ファン調整制御上で排気ファンＦｒの出力を減少する側に調整させて、この減少側へのファン出力調整に対し排気側ダンパ制御上で排気側ダンパＶｒの開度ｂ１〜ｂ３が全て排気側の目標中間開度範囲Ｙに入るように（すなわち、排気側ダンパＶｒが適正開度状態になるように）する。
【００３３】
１１は隣接する対象室１を区画する室壁１ａに設けられた扉、１１ａは扉１１の開閉を検出し、その検出情報ｉｄを中央制御器ＣＣに送信する扉センサであり、この扉センサ１１ａにより、扉１１が開かれると扉開き情報が中央制御器ＣＣに送信され、扉１１が閉じられると扉閉じ情報が中央制御器ＣＣに送信される。
【００３４】
１２は中央制御器ＣＣにおける排気側制御部であり、この排気側制御部１２は排気側におけるシステム全体の制御として次の（イ）〜（ニ）の制御を実行する（図３参照。）。
【００３５】
（イ）隣接する２つの対象室１間における人の出入りや物の運搬のために、それら対象室１の間の扉１１が一時的に開かれると（♯１）、それと同時にタイマーによる時間の計測をスタートさせ（♯２）、扉１１の開き状態が設定遅延時間Ｔ１を経過するまでは、排気側のダンパ制御器６Ｂによるダンパ制御に平行して前記した排気側の風路圧調整制御として風路圧設定変更制御及びファン調整制御を排気側の風路圧設定変更部１０Ｂ及び排気側ファン制御器９Ｂに実行させる（♯３，♯４）。
【００３６】
（ロ）その後、扉１１の開き状態が設定遅延時間Ｔ１を経過すると（♯３）、排気側の風路圧調整制御の制御動作を制限する（♯５）。
【００３７】
（ハ）この制御動作の制限（♯５）は、風路圧調整制御が、扉１１が開かれることで室圧変動が生じた対象室１に対して、排気側ダンパ制御器６Ｂがそれら対象室１の室圧ｐを設定室圧ｐｓに復帰させるために、その開度を目標中間開度Ｙから逸脱させてしまう恐れのある排気側ダンパＶｒ（すなわち、扉１１の開きにより室圧変動が生じた両方の対象室１の排気側ダンパＶｒ）を、風路圧設定変更制御における開度検出対象のダンパから除外して、他の対象室１についての排気側ダンパＶｒの検出開度に基づき風路圧設定変更制御を実行するものである。
【００３８】
（ニ）そして、扉１１が閉じられると（♯６）、それと同時にタイマーによる時間Ｔの計測をスタートさせ（♯７）、扉１１が閉じられてから設定遅延時間Ｔ２の経過（♯８）をもって風路圧調整制御の制御動作の制限を解除して（♯９）、通常の風路圧調整制御に復帰する。
【００３９】
なお、排気側の風路圧調整制御の制御動作の制限としては、上述した制限方法のほかに、扉１１の開きにより室圧変動が生じた対象室１のうち、室圧ｐの変動幅（すなわち、変動後の室圧ｐと設定室圧ｐｓとの偏差Δｐ）の大きい方の対象室１についての排気側ダンパＶｒのみを排気側の風路圧設定変更制御における開度検出対象のダンパから除外する方法、排気側の風路圧設定変更制御を停止する方法、排気側のファン調整制御による排気ファンＦｒの出力調整速度を低下させる方法など、種々の制限方法で実行してもよい。
【００４０】
以上、本実施形態において、排気側のダンパ制御器６Ｂ、ファン制御器９Ｂ及び風路圧設定変更部１０Ｂ、並びに、排気側制御部１２は、
対象室１それぞれの検出室圧ｐと設定室圧ｐｓとの偏差Δｐに応じ排気側ダンパＶｒの開度を調整して対象室１それぞれの室圧ｐを設定室圧ｐｓに調整するダンパ制御と、
このダンパ制御において排気側ダンパＶｒが設定適正開度Ｙになるように、排気側ダンパＶｒの検出開度ｂ１〜ｂ３に応じ排気ファンＦｒの出力を調整して排気側主風路３の風路圧ｆｒを変更する風路圧調整制御（すなわち、風路圧設定変更制御及びファン調整制御）とを実行する制御手段を構成する。
そして、この制御手段は、隣接する対象室１を区画する室壁１ａに設けられた扉１１の開閉を検出する扉センサ１１ａによる検出情報ｉｄに基づき、扉１１が開き状態にあることに応じて、風路圧調整制御の制御動作を制限する構成にしてある。
【００４１】
なお、本実施形態において、システム起動時は、給気側及び排気側主風路２，３の風路圧ｆｓ，ｆｒを、目標設定風路圧ｆｓｓ，ｆｒｓ調整により一定の変化率で設定初期値まで上昇させた上で風路圧調整制御を実行させて、システムを起動し、そして、システム停止時は、給気側及び排気側主風路２，３の風路圧ｆｓ，ｆｒを、風路圧調整制御を停止した上で目標設定風路圧ｆｓｓ，ｆｒｓ調整によりを一定の変化率で下降させて、システムを停止する形態を採っている。
【００４２】
〔別の実施形態〕
次に別実施形態を列記する。
【００４３】
前述の実施形態では、給気側ダンパＶｓの開度調整により各給気側分岐風路２ａの通風量ｑｓ（対象室１に対する換気風量）を設定通風量ｑｓｓに調整し、かつ、排気側ダンパＶｒの開度調整により各対象室１の室圧ｐを設定室圧ｐｓに調整する空調システムを示したが、逆に、排気側ダンパＶｒの開度調整により各排気側分岐風路３ａの通風量ｑｒ（対象質に対する換気風量）を設定通風量ｑｒｓに調整し、かつ、給気側ダンパＶｓの開度調整により各対象室１の室圧ｐを設定室圧ｐｓに調整する空調システムであってもよい。
なお、この場合は、排気側制御部１２に替えて給気側制御部を設け、その給気側制御部が、対象室１間の扉１１の開閉に基づく給気側の風路圧調整制御（すなわち、扉センサ１１ａの検出情報ｉｄに基づいた、風路圧調整制御の制御動作の制限及びその制限の解除）を実行する構成を採る。
【００４４】
前述の実施形態では、給気ファンＦｓ及び排気ファンＦｒのそれぞれについて、ファン調整制御を実行する給気側ファン制御器９Ａ及び排気側ファン制御器９Ｂを配したが、給気側風路圧設定変更部１０Ａ、排気側風路圧設定変更部１０Ｂから直接に給気ファンＦｓや排気ファンＦｒの出力調整部（例えば、インバータ部）へ変更風路圧に応じた出力調整指令を出力して、給気側主風路２や排気側主風路３の風路圧ｆｓ、ｆｒを変更するようにしてもよい。また、その際、給気側圧力センサ８ａや排気側圧力センサ８ｂの検出風路圧ｆｓ，ｆｒをフィードバックしながらファンＦｓ，Ｆｒの出力を調整して風路圧ｆｓ，ｆｒを変更する制御形態、あるいは、風路圧ｆｓ，ｆｒのフィードバックを行なわずにフィードフォワード的にファンＦｓ，Ｆｒの出力を調整して風路圧ｆｓ，ｆｒを変更する制御形態の何れを採用してもよい。
【００４５】
対象室１はどのような用途のものであってもよく、また、室圧調整目的や通風量調整の目的もどのようなものであってもよい。
【図面の簡単な説明】
【図１】空調システムの全体構造図
【図２】風路圧（ファン出力）の調整形態を説明する図
【図３】システムの制御を示すフローチャート
【符号の説明】
１対象室
１ａ室壁
２，３主風路
２ａ，３ａ分岐風路
６Ａ，６Ｂ制御手段
９Ａ，９Ｂ制御手段
１０Ａ，１０Ｂ制御手段
１１扉
１１ａ検出手段
Ｆｓ，Ｆｒファン
Ｔ１，Ｔ２設定遅延時間
Ｖｓ，Ｖｒダンパ
Ｘ，Ｙ設定適正開度
ａ１〜ａ３ダンパ開度
ｂ１〜ｂ３ダンパ開度
ｆｓ，ｆｒ主風路の風路圧
ｆｓｓ，ｆｒｓ設定風路圧
Δｆｓ，Δｆｒ風路圧偏差
ｉｄ検出情報
ｐ室圧
ｐｓ設定室圧
Δｐ室圧偏差[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioning system used in a facility that requires room pressure management for a plurality of rooms, such as a chemical manufacturing facility and a semiconductor electronic component manufacturing facility, and more specifically, a main wind on an air supply side or an exhaust side with a fan interposed A plurality of target chambers are connected in parallel to each other via a branch air passage, and a damper is provided for each of the branch air passages, and the opening degree of the damper is adjusted according to the deviation between the detection chamber pressure of each target chamber and the set chamber pressure. Damper control that adjusts the chamber pressure of each target chamber to the set chamber pressure, and adjusts the fan output according to the detected opening of the damper so that the damper has a set appropriate opening in this damper control. The present invention relates to an air conditioning system provided with control means for executing air path pressure adjustment control for changing the air path pressure of the air path.
[0002]
[Prior art]
In this type of air conditioning system, the damper of each branch air passage is set to an appropriate opening degree on the damper control by the above air passage pressure adjustment control, so that the room of each target room by the damper control is controlled. Conventionally, in this type of air conditioning system, airway pressure adjustment control is performed regardless of the open / closed state of the door provided on the chamber wall that divides the adjacent target room. It was executed by a normal control operation (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP 2000-314545 A
[0004]
[Problems to be solved by the invention]
However, in this conventional system, for example, a fan is interposed in the main air passage on the exhaust side, and a damper is provided in the branch air passage on the exhaust side. If the target room (low pressure chamber) has a lower number of ventilations than the target room (high pressure chamber) on the side where the set room pressure is higher, the chamber pressure in the low pressure chamber will increase significantly when the door between them is opened. Therefore, the damper in the low-pressure chamber operates by the damper control to the opening side that is the increase side of the exhaust air volume, and deviates from the set appropriate opening degree.On the other hand, by the air path pressure adjustment control based on the damper opening degree detection, It is adjusted to the side where the output increases, and the airway pressure of the exhaust side main airway decreases. Then, due to the decrease in the airway pressure in the main airway, the dampers in the high pressure chamber and other target chambers operate greatly on the closed side, which is the exhaust air volume decreasing side, under the damper control, and deviate from the set appropriate opening degree. On the other hand, it is adjusted to the side where the fan output decreases by the air path pressure adjustment control, and the air path pressure of the exhaust side main air path increases. Again, the damper of the low-pressure chamber deviates from the set appropriate opening to the opening side by the damper control, and on the other hand, the fan output may be adjusted to increase again by the air path pressure adjustment control. is there.
Due to such instability of the system, it becomes difficult to maintain the room pressure of the target room at the set room pressure, and from a vicious circle that repeats such an unstable state to a hunting state in which the room pressure cannot be adjusted. There is also a risk that the entire system will not function.
Similarly, in the adjacent target chambers, if the target chamber on the side where the set chamber pressure is low (low pressure chamber) has more ventilation than the target chamber on the side where the set chamber pressure is high (high pressure chamber), the door between them When is opened, the chamber pressure in the high-pressure chamber is greatly reduced, so that the damper in the high-pressure chamber operates to the closed side, which is the exhaust air volume decreasing side, and deviates from the set appropriate opening by damper control. Then, the air passage pressure adjustment control based on the damper detection opening degree is adjusted so that the fan output decreases, and the air passage pressure of the exhaust main air passage increases. Due to the increase in the airway pressure in the main airway, the dampers in the low-pressure chamber and other target chambers operate greatly on the open side, which is the exhaust air volume increasing side, under the damper control, and deviate from the set appropriate opening degree. On the other hand, it is adjusted to the side where the fan output increases by the air path pressure adjustment control, and the air path pressure of the exhaust side main air path decreases. And again, the damper of the high pressure chamber deviates from the set appropriate opening degree to the closing side by the damper control, and on the other hand, the fan output is adjusted to the side to decrease again by the air path pressure adjustment control, and the system is repeated. Becomes unstable.
The same problem arises with a configuration in which a fan is interposed in the main air path on the air supply side and a damper is provided on the branch air path on the air supply side.
[0005]
In view of this situation, the main problem of the present invention is to effectively solve the above problems with a rational improvement.
[0006]
[Means for Solving the Problems]
[1] The invention according to claim 1 relates to an air conditioning system,
A plurality of target chambers are connected in parallel via a branch air passage to a main air passage on the supply side or exhaust side interposing a fan, and a damper is provided in each of the branch air passages,
Damper control for adjusting the opening of the damper according to the deviation between the detection chamber pressure and the set chamber pressure of each of the target chambers to adjust the chamber pressure of each of the target chambers to the set chamber pressure;
In this damper control, air path pressure adjustment control for adjusting the output of the fan according to the detected opening of the damper and changing the air path pressure of the main air path so that the damper has a set appropriate opening. An air conditioning system provided with a control means to execute,
Providing a detecting means for detecting opening and closing of a door provided on a chamber wall that divides the adjacent target chamber;
The control means is configured to limit the control operation of the airway pressure adjustment control based on the detection information by the detection means in response to the door being in an open state.
[0007]
According to this configuration, when the door is opened, the chamber pressure of the target chamber greatly fluctuates, and the damper opening of the target chamber is adjusted by the damper control with respect to the chamber pressure variation, and deviates from the set appropriate opening. However, the detection of the door open state by the detection means limits the control action of the airway pressure adjustment control, so that the fan output can be significantly changed by the airway pressure adjustment control. Deviations from the set appropriate opening of the damper for other target chambers due to (path pressure fluctuation) can be suppressed.
Therefore, it is possible to suppress the above-described system instability that may occur in the conventional system, and it is also possible to suppress the system from falling into a hunting state. The adjustment state can be maintained.
[0008]
[2] The invention according to claim 2 specifies a preferred embodiment for carrying out the invention according to claim 1, and its features are as follows:
The control means is configured to restrict the control operation of the airway pressure adjustment control when the door is kept open for a set delay time based on detection information by the detection means.
[0009]
In other words, according to this configuration, the airway pressure adjustment control is not limited immediately when the door is opened, but is restricted when the doorway is maintained open for the set delay time. For the short time door opening and closing where the damper opening does not deviate from the set appropriate opening, the airway pressure adjustment control is executed as usual, which makes the airway more than necessary for the door opening and closing. By restricting the control operation of the pressure adjustment control, a stable chamber pressure adjustment state as a whole system can be more reliably maintained.
[0010]
[3] The invention according to claim 3 specifies a preferred embodiment for carrying out the invention according to claim 1 or 2, and its features are as follows:
The control means is configured to stop the air path pressure adjustment control as a restriction of the control operation.
[0011]
That is, according to this configuration, by stopping the air passage pressure adjustment control based on the detection of the door open state by the detection means, the fan output is maintained constant regardless of the opening degree of the damper of each target chamber, Under that condition, the damper control that adjusts the chamber pressure of each target chamber to the set chamber pressure is executed in an independent form, so that other target chambers caused by a significant output change of the fan due to the airway pressure adjustment control Deviations from the proper opening of the damper for a target room other than the target room where the chamber pressure fluctuates due to the opening of the door can be suppressed, which makes the entire system stable regardless of the opening and closing of the door. The chamber pressure adjustment state can be maintained.
[0012]
[4] The invention according to claim 4 specifies an embodiment suitable for carrying out the invention according to claim 1 or 2, and its features are as follows:
Opening detection for the airway pressure adjustment control for either one or both of the dampers of each of the two target chambers communicating with each other by opening the door, with the control means as a restriction of the control operation It is in the point which is set as the structure excluded from object.
[0013]
That is, according to this configuration, based on the detection of the door open state by the detection means, either one or both of the dampers of each of the two target chambers communicating with each other by opening the door is controlled by the air path pressure adjustment control. Therefore, even if the damper of the target chamber where the chamber pressure fluctuates due to the opening of the door deviates from the set appropriate opening, the fan's output will be changed significantly by air path pressure adjustment control. Thus, since the airway pressure of the main airway does not fluctuate greatly, it is possible to prevent the dampers of other target rooms from deviating from the set appropriate opening.
In addition, since the airway pressure adjustment control is continued based on the detected opening of the damper for the target room other than the target room in which the room pressure fluctuates due to the opening of the door, the airway pressure adjustment is performed when the door is in the open state. Compared to the configuration in which the control is stopped, the room pressure of the other target chambers can be adjusted more favorably.
[0014]
[5] The invention according to claim 5 specifies an embodiment suitable for carrying out the invention according to claim 1 or 2, and its features are as follows:
The control means is configured to reduce the output adjustment speed of the fan in the air passage pressure adjustment control as a restriction of the control operation.
[0015]
In other words, according to this configuration, the detection of the door opening state by the detection means reduces the fan output adjustment speed by the air path pressure adjustment control, so that the room pressure of one target chamber fluctuates due to the opening of the door. Even if the damper opening with respect to the target room deviates from the set appropriate opening, the fan output adjustment speed is slow, so the fluctuation of the airway pressure in the main airway becomes slow. The change in the opening of the damper of the other is also slowed down, and as a result, it is possible to suppress the dampers of the other target rooms from deviating from the set appropriate opening as much as possible, and to maintain a stable chamber pressure adjustment state as a whole system Can do.
[0016]
[6] The invention according to claim 6 specifies an embodiment suitable for carrying out the invention according to any one of claims 1 to 5, and its features are as follows:
The control means is configured to release the restriction of the control operation in response to the door being in a closed state based on detection information from the detection means.
[0017]
In other words, according to this configuration, the control operation of the airway pressure adjustment control that has been restricted by the detection of the door open state by the detection means is released by the detection of the door closed state, and returns to normal control. The damper of each target room is adjusted again to the appropriate opening degree on the damper control by the air path pressure adjustment control, and the chamber pressure adjustment of the target room is very good again by the damper control under the air path pressure adjustment control. To be done.
[0018]
[7] The invention according to claim 7 specifies an embodiment suitable for carrying out the invention according to claim 6, and its features are as follows:
The control means is configured to release the restriction on the control operation when a set delay time has elapsed after the door is closed based on detection information from the detection means.
[0019]
Immediately after the door is closed, the dampers that deviate from the set appropriate opening due to fluctuations in the room pressure due to the opening of the door often have not yet returned to the set appropriate opening, so the door is closed. When the restriction on the control operation of the airway pressure adjustment control is released immediately, the fan output is greatly changed by the airway pressure adjustment control based on the detected damper opening, and the airway pressure of the main airway fluctuates. As a result, the dampers in the target rooms other than the target room that caused the chamber pressure fluctuation due to the opening of the door will deviate from the set appropriate opening, and this may lead to instability of the system. is there.
In this configuration, after the door is closed, the set delay time is allowed to elapse until the restriction on the control operation of the airway pressure adjustment control is released, so that the damper attached to the target room whose room pressure fluctuates due to the opening of the door. Since the restriction of the control action of the airway pressure adjustment control can be released after the opening degree returns to the appropriate opening degree or close to it, it effectively prevents the system from becoming unstable due to the restriction being released too early. it can.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an air conditioning system for a plurality of target chambers 1, 2 is an air supply side main air passage with an air supply fan Fs, and 3 is an exhaust side main air passage with an exhaust fan Fr. The chamber 1 is connected in parallel to the air supply side main air passage 2 through the air supply side branch air passage 2a, and is also connected in parallel to the exhaust side main air passage 3 through the exhaust side branch air passage 3a. It is. Reference numeral 4 denotes an air conditioner that adjusts the temperature and humidity of the air supplied to the target room 1.
[0021]
Vs is an air supply side damper provided in each of the air supply side branch air passages 2a, 5 is an air flow amount sensor for detecting the air flow amount qs of the air supply side branch air passage 2a, and 6A is for controlling the air supply side damper Vs. These air supply side damper controllers 6A are provided on the air supply side according to the deviation Δqs between the detected air flow rate qs detected by the air flow rate sensor 5 and the target air flow rate qss specified by the central controller CC. The air supply side damper control is performed in which the opening degree of the damper Vs is adjusted to adjust the air flow rate qs of each air supply side branch air passage 2a (that is, the air flow rate of each target chamber 1) to the target air flow rate qss.
[0022]
Vr is an exhaust side damper interposed in each of the exhaust side branch air passages 3a, 7 is a chamber pressure sensor for detecting a chamber pressure p (specifically, a differential pressure between the reference pressure and the chamber pressure) of the target chamber 1, and 6B. Is an exhaust-side damper controller that controls the exhaust-side damper Vr, and these exhaust-side damper controllers 6B differ between the detection chamber pressure p detected by the chamber pressure sensor 7 and the target chamber pressure ps designated by the central controller CC. Exhaust side damper control for adjusting the chamber pressure p of each target chamber 1 to the target chamber pressure ps by adjusting the opening of the exhaust side damper Vr according to Δp is executed.
[0023]
8a is an air supply side pressure sensor for detecting the air passage pressure fs of the air supply side main air passage 2, 9A is an air supply side fan controller for controlling the air supply fan Fs, and this air supply side fan controller 9A is The output of the air supply fan Fs is adjusted by inverter control according to the deviation Δfs between the air path pressure fs detected by the air supply side pressure sensor 8a and the air supply side target air path pressure fss designated by the central controller CC. The air supply side fan adjustment control for adjusting the air path pressure fs of the air side main air path 2 to the air supply side target air path pressure fss is executed.
[0024]
8b is an exhaust side pressure sensor that detects the air path pressure fr of the exhaust side main air path 3, and 9B is an exhaust side fan controller that controls the exhaust fan Fr. The exhaust side fan controller 9B is an exhaust side pressure sensor. The air path of the exhaust side main air path 3 is adjusted by adjusting the output of the exhaust fan Fr by inverter control according to the deviation Δfr between the detected air path pressure fr by 8b and the exhaust side target air path pressure frs specified by the central controller CC. Exhaust-side fan adjustment control for adjusting the pressure fr to the exhaust-side target wind path pressure frs is executed.
[0025]
Reference numerals 10A and 10B denote air supply side and exhaust side air passage pressure setting change units in the central controller CC. The air supply side air passage pressure setting change unit 10A includes the air supply by the air supply side damper controller 6A. In the side damper control, the supply side damper Vs is in a predetermined appropriate opening state (in this embodiment, the upper and lower limit values x1 and x2 are set to intermediate opening values as shown in FIG. 2). Air supply side target according to the detected openings a1 to a3 of the supply side dampers Vs so that the openings a1 to a3 of all the supply side dampers Vs are in the range of the temperature range X). An air supply side air passage pressure setting change control for changing the air passage pressure fss is executed.
[0026]
Further, the exhaust-side air passage pressure setting changing unit 10B is configured so that the exhaust-side damper Vr is in a predetermined appropriate opening state (in this embodiment, in the exhaust-side damper control by the exhaust-side damper controller 6B, as in the supply side. As shown in FIG. 2, the openings b1 to b3 of all the exhaust side dampers Vr are within the range of the target intermediate opening range Y on the exhaust side where both the upper and lower limit values y1 and y2 are set to the intermediate opening values. The exhaust side air passage pressure setting change control is executed to change the exhaust side target air passage pressure frs in accordance with the detected openings b1 to b3 of the exhaust side dampers Vr.
[0027]
That is, in the present embodiment, the air passage pressure setting as the air passage pressure adjustment control on the air supply side as described above is performed under the air supply damper control that adjusts the air flow amount qs of the air supply side branch air passage 2a. The opening degree a1 to a3 of the supply side damper Vs all enter the target intermediate opening range X on the supply side (opening range excellent in the air volume adjustment function on the damper characteristic) by the change control and the supply side fan adjustment control. By doing so, it is possible to satisfactorily adjust the ventilation amount by adjusting the supply side damper (ventilation air amount adjustment for the target room 1) in terms of sensitivity and accuracy.
[0028]
Similarly, under the exhaust side damper control for adjusting the chamber pressure p of the target chamber 1, as described above, the air path pressure setting change control and the exhaust side fan adjustment control as the exhaust side air path pressure adjustment control are performed. By making all the openings b1 to b3 of the exhaust damper Vr fall within the target intermediate opening range Y on the exhaust side (opening range excellent in the chamber pressure adjustment function on the damper characteristic), the exhaust damper control is performed. The chamber pressure can be adjusted satisfactorily in terms of sensitivity and accuracy.
[0029]
In the air supply side air path pressure setting change control, the air supply side air path pressure setting changing unit 10A specifically has a maximum one of the detected openings a1 to a3 of the air supply side damper Vs. When the target intermediate opening range X is deviated to the large opening side, the supply side target wind path pressure fss is changed to the rising side, and the smallest one of the detection openings a1 to a3 of the supply side damper Vs is When the target intermediate opening range X on the air supply side deviates to the small opening side, the air supply side target wind path pressure fss is changed to the lower side, and all the detected openings a1 to a3 of the air supply side damper Vs are detected. When the air supply side target intermediate opening range X is in the range (the state shown in FIG. 2), the air supply side target wind path pressure fss is maintained at the current value.
[0030]
That is, when the maximum detected opening degree a1 to a3 of the supply side damper Vs deviates from the target intermediate opening degree X on the supply side to the large opening side, the supply side target wind path pressure fss is set. By changing to the rising side, the output of the supply fan Fs is adjusted to be increased on the supply side fan adjustment control, and the supply of air on the supply side damper control is performed for the fan output adjustment to the increase side. The opening of each of the side dampers Vs is adjusted to the closed side, and conversely, the smallest one of the detected openings a1 to a3 of the supply side damper Vs has the target intermediate opening range X on the supply side. When deviating to the small opening side, the output side of the supply air fan Fs is adjusted to be reduced on the supply air side fan adjustment control by changing to the decrease side of the air supply side target wind path pressure fss. Thus, the air supply side damper V on the air supply side damper control with respect to the fan output adjustment to the decreasing side. As opening a1~a3 enters the target intermediate opening range X of all air supply side (i.e., as supply air damper Vs is proper opening state).
[0031]
On the other hand, in the exhaust side wind path pressure setting change control, the exhaust side wind path pressure setting changing unit 10B is specifically configured such that the largest one of the detected openings b1 to b3 of the exhaust side damper Vr is the target on the exhaust side. When the intermediate opening range Y deviates to the large opening side, the exhaust side target wind path pressure frs is changed to the lower side, and the smallest one of the detected openings b1 to b3 of the exhaust side damper Vr is the exhaust side target. When the intermediate opening range Y deviates to the small opening side, the exhaust side target wind path pressure frs is changed to the rising side, and all the detected openings b1 to b3 of the exhaust side damper Vr are the target intermediate opening on the exhaust side. When it is within the range Y (the state shown in FIG. 2), the exhaust side target wind path pressure frs is maintained at the current value.
[0032]
That is, when the maximum detected opening degree b1 to b3 of the exhaust side damper Vr deviates from the exhaust side target intermediate opening degree Y to the large opening side, the exhaust side target wind path pressure frs is reduced to the lower side. By changing, the output of the exhaust fan Fr is adjusted to be increased on the exhaust side fan adjustment control, and each of the exhaust side dampers Vr is closed on the exhaust side damper control with respect to the fan output adjustment to the increase side. On the contrary, the smallest one of the detected openings b1 to b3 of the exhaust side damper Vr deviates from the target intermediate opening range Y on the exhaust side to the small opening side. When the exhaust side target wind path pressure frs is increased, the output of the exhaust fan Fr is adjusted to be reduced on the exhaust side fan adjustment control. Exhaust side damper V in exhaust side damper control As opening b1~b3 enters the target intermediate opening range Y of all the exhaust side (i.e., so that the exhaust side damper Vr becomes proper opening state).
[0033]
11 is a door provided on the chamber wall 1a that partitions the adjacent target chamber 1, 11a is a door sensor that detects the opening and closing of the door 11, and transmits the detection information id to the central controller CC. The door sensor 11a Thus, when the door 11 is opened, door opening information is transmitted to the central controller CC, and when the door 11 is closed, door closing information is transmitted to the central controller CC.
[0034]
Reference numeral 12 denotes an exhaust side control unit in the central controller CC. The exhaust side control unit 12 executes the following controls (a) to (d) as control of the entire system on the exhaust side (see FIG. 3).
[0035]
(B) When the door 11 between the target rooms 1 is temporarily opened for the purpose of entering and exiting between two adjacent target rooms 1 and transporting objects (# 1), at the same time, the time of the timer The measurement is started (# 2), and the exhaust side air path pressure adjustment control is performed in parallel with the damper control by the exhaust side damper controller 6B until the door 11 is opened for the set delay time T1. The air path pressure setting change control and the fan adjustment control are executed by the exhaust side air path pressure setting change unit 10B and the exhaust side fan controller 9B (# 3, # 4).
[0036]
(B) Thereafter, when the open state of the door 11 has passed the set delay time T1 (# 3), the control operation of the exhaust side air passage pressure adjustment control is restricted (# 5).
[0037]
(C) The restriction (# 5) of the control operation is that the exhaust-side damper controller 6B applies the air path pressure adjustment control to the target chamber 1 in which the chamber pressure has changed due to the door 11 being opened. In order to return the chamber pressure p of the chamber 1 to the set chamber pressure ps, the exhaust-side damper Vr (that is, the chamber 11 fluctuates due to the opening of the door 11) that may cause the opening to deviate from the target intermediate opening Y. Exhaust side dampers Vr) of both target chambers 1 that have occurred are excluded from dampers that are subject to opening degree detection in the airway pressure setting change control, and based on the detected opening degree of the exhaust side damper Vr for the other target chambers 1 The air path pressure setting change control is executed.
[0038]
(D) When the door 11 is closed (# 6), at the same time, the measurement of the time T by the timer is started (# 7). After the door 11 is closed, the set delay time T2 has elapsed (# 8). The restriction on the control operation of the air passage pressure adjustment control is released (# 9), and the normal air passage pressure adjustment control is restored.
[0039]
In addition, as a restriction | limiting of the control operation | movement of the air path pressure adjustment control by the side of exhaust_gas | exhaustion, in addition to the restriction | limiting method mentioned above, the fluctuation range ( That is, only the exhaust-side damper Vr for the target chamber 1 having the larger deviation Δp between the changed chamber pressure p and the set chamber pressure ps is removed from the opening detection target damper in the exhaust-side air passage pressure setting change control. It may be executed by various limiting methods, such as a method of excluding, a method of stopping the air path pressure setting change control on the exhaust side, and a method of reducing the output adjustment speed of the exhaust fan Fr by the fan adjustment control on the exhaust side.
[0040]
As described above, in the present embodiment, the exhaust-side damper controller 6B, the fan controller 9B, the air passage pressure setting changing unit 10B, and the exhaust-side controller 12 are
Damper control for adjusting the chamber pressure p of each target chamber 1 to the set chamber pressure ps by adjusting the opening degree of the exhaust side damper Vr according to the difference Δp between the detection chamber pressure p and the set chamber pressure ps of each target chamber 1; ,
In this damper control, the output of the exhaust fan Fr is adjusted according to the detected openings b1 to b3 of the exhaust side damper Vr so that the exhaust side damper Vr becomes the set appropriate opening degree Y, and the air path of the exhaust side main air path 3 Control means for executing air path pressure adjustment control for changing the pressure fr (that is, air path pressure setting change control and fan adjustment control) is configured.
And this control means respond | corresponds that the door 11 is in an open state based on the detection information id by the door sensor 11a which detects opening and closing of the door 11 provided in the chamber wall 1a which divides the adjacent target chamber 1 The control operation of the air path pressure adjustment control is limited.
[0041]
In the present embodiment, when the system is started, the airway pressures fs and fr of the supply-side and exhaust-side main airways 2 and 3 are initially set at a constant rate of change by adjusting the target set airway pressure fss and frs. After the air pressure is raised to the value, the air passage pressure adjustment control is executed to start the system. When the system is stopped, the air passage pressures fs and fr of the supply side and exhaust side main air passages 2 and 3 are After the air path pressure adjustment control is stopped, the system is stopped by lowering the target set air path pressure fss and frs at a constant rate of change.
[0042]
[Another embodiment]
Next, another embodiment will be listed.
[0043]
In the above-described embodiment, the air flow rate qs (the ventilation air flow rate for the target chamber 1) of each air supply side branch air passage 2a is adjusted to the set air flow rate qss by adjusting the opening of the air supply side damper Vs, and the exhaust side damper is provided. The air conditioning system that adjusts the chamber pressure p of each target chamber 1 to the set chamber pressure ps by adjusting the opening of the Vr has been shown. This is an air conditioning system that adjusts the amount qr (ventilation airflow for the target quality) to the set ventilation rate qrs and adjusts the chamber pressure p of each target chamber 1 to the set chamber pressure ps by adjusting the opening of the supply side damper Vs. May be.
In this case, an air supply side control unit is provided instead of the exhaust side control unit 12, and the air supply side control unit controls the air path pressure adjustment on the air supply side based on opening and closing of the door 11 between the target chambers 1. In other words, a configuration is adopted in which (the restriction of the control operation of the airway pressure adjustment control and the release of the restriction based on the detection information id of the door sensor 11a) is executed.
[0044]
In the above-described embodiment, the supply-side fan controller 9A and the exhaust-side fan controller 9B that perform fan adjustment control are arranged for each of the supply fan Fs and the exhaust fan Fr. An output adjustment command corresponding to the changed airway pressure is output directly from the changing unit 10A and the exhaust side airway pressure setting changing unit 10B to the output adjusting unit (for example, an inverter unit) of the air supply fan Fs or the exhaust fan Fr, The air path pressures fs and fr of the supply side main air path 2 and the exhaust side main air path 3 may be changed. Further, at that time, a control form in which the air path pressures fs and fr are changed by adjusting the outputs of the fans Fs and Fr while feeding back the detected air path pressures fs and fr of the supply side pressure sensor 8a and the exhaust side pressure sensor 8b. Alternatively, any control mode may be employed in which the air path pressures fs and fr are changed by adjusting the outputs of the fans Fs and Fr in a feed forward manner without performing feedback of the air path pressures fs and fr.
[0045]
The target chamber 1 may be used for any purpose, and may have any purpose for adjusting the room pressure or adjusting the air flow rate.
[Brief description of the drawings]
FIG. 1 is an overall structural diagram of an air conditioning system
FIG. 2 is a diagram for explaining an adjustment mode of air passage pressure (fan output)
FIG. 3 is a flowchart showing control of the system.
[Explanation of symbols]
1 target room
1a room wall
A few main wind paths
2a, 3a Branch air passage
6A, 6B Control means
9A, 9B Control means
10A, 10B control means
11 Door
11a detection means
Fs, Fr Fan
T1, T2 set delay time
Vs, Vr damper
X, Y Set appropriate opening
a1 to a3 Damper opening
b1 to b3 Damper opening
fs, fr Airway pressure of main airway
fss, frs Set airway pressure
Δfs, Δfr Wind path pressure deviation
id detection information
p chamber pressure
ps Set room pressure
Δp chamber pressure deviation

Claims

ファンを介装した給気側又は排気側の主風路に複数の対象室を分岐風路を介し並列に接続して、これら分岐風路のそれぞれにダンパを設け、
前記対象室それぞれの検出室圧と設定室圧との偏差に応じ前記ダンパの開度を調整して前記対象室それぞれの室圧を設定室圧に調整するダンパ制御と、
このダンパ制御において前記ダンパが設定適正開度になるように、前記ダンパの検出開度に応じ前記ファンの出力を調整して前記主風路の風路圧を変更する風路圧調整制御とを実行する制御手段を設ける空調システムであって、
隣接する前記対象室を区画する室壁に設けられた扉の開閉を検出する検出手段を設け、
前記制御手段を、前記検出手段による検出情報に基づき、前記扉が開き状態にあることに応じて、前記風路圧調整制御の制御動作を制限する構成にしてある空調システム。A plurality of target chambers are connected in parallel via a branch air passage to a main air passage on the supply side or exhaust side interposing a fan, and a damper is provided in each of the branch air passages,
Damper control for adjusting the opening of the damper according to the deviation between the detection chamber pressure and the set chamber pressure of each of the target chambers to adjust the chamber pressure of each of the target chambers to the set chamber pressure;
In this damper control, air path pressure adjustment control for adjusting the output of the fan according to the detected opening of the damper and changing the air path pressure of the main air path so that the damper has a set appropriate opening. An air conditioning system provided with a control means to execute,
Providing a detecting means for detecting opening and closing of a door provided on a chamber wall that divides the adjacent target chamber;
An air conditioning system in which the control means is configured to limit the control operation of the airway pressure adjustment control in response to the door being in an open state based on information detected by the detection means.

前記制御手段を、前記検出手段による検出情報に基づき、前記扉が設定遅延時間にわたり開き状態を維持されたときに前記風路圧調整制御の制御動作を制限する構成にしてある請求項１記載の空調システム。2. The control unit according to claim 1, wherein the control unit is configured to limit the control operation of the airway pressure adjustment control when the door is kept open for a set delay time based on detection information by the detection unit. Air conditioning system.

前記制御手段を、前記制御動作の制限として、前記風路圧調整制御を停止する構成にしてある請求項１又は２記載の空調システム。The air conditioning system according to claim 1 or 2, wherein the control means is configured to stop the air passage pressure adjustment control as a restriction of the control operation.

前記制御手段を、前記制御動作の制限として、前記扉の開きにより連通する二つの対象室それぞれの前記ダンパのうちのいずれか一方、又は、両方を前記風路圧調整制御のための開度検出対象から除外する構成にしてある請求項１又は２記載の空調システム。Opening detection for the airway pressure adjustment control for either one or both of the dampers of each of the two target chambers that communicate with each other by opening the door, with the control means as a restriction of the control operation The air conditioning system according to claim 1 or 2, wherein the air conditioning system is configured to be excluded from the target.

前記制御手段を、前記制御動作の制限として、前記風路圧調整制御における前記ファンの出力調整速度を低下させる構成にしてある請求項１又は２記載の空調システム。The air conditioning system according to claim 1 or 2, wherein the control means is configured to reduce an output adjustment speed of the fan in the air passage pressure adjustment control as a restriction of the control operation.

前記制御手段を、前記検出手段による検出情報に基づき、前記扉が閉じ状態にあることに応じて、前記制御動作の制限を解除する構成にしてある請求項１〜５のいずれか１項に記載の空調システム。6. The control device according to claim 1, wherein the control unit is configured to release the restriction of the control operation in response to the door being in a closed state based on information detected by the detection unit. Air conditioning system.

前記制御手段を、前記検出手段による検出情報に基づき、前記扉を閉じた後、設定遅延時間を経過したとき前記制御動作の制限を解除する構成にしてある請求項６記載の空調システム。The air conditioning system according to claim 6, wherein the control unit is configured to release the restriction of the control operation when a set delay time has elapsed after the door is closed based on information detected by the detection unit.