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JP4411797B2 - Dehumidification method and apparatus - Google Patents
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JP4411797B2 - Dehumidification method and apparatus - Google Patents

Dehumidification method and apparatus Download PDF

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Publication number
JP4411797B2
JP4411797B2 JP2001138800A JP2001138800A JP4411797B2 JP 4411797 B2 JP4411797 B2 JP 4411797B2 JP 2001138800 A JP2001138800 A JP 2001138800A JP 2001138800 A JP2001138800 A JP 2001138800A JP 4411797 B2 JP4411797 B2 JP 4411797B2
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regeneration
air
processing
moisture
rotor
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JP2002331221A (en
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康博 頭島
匠 杉浦
昭雄 児玉
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Hitachi Ltd
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Hitachi Plant Technologies Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1016—Rotary wheel combined with another type of cooling principle, e.g. compression cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1032—Desiccant wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1056—Rotary wheel comprising a reheater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1056—Rotary wheel comprising a reheater
    • F24F2203/106—Electrical reheater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1068—Rotary wheel comprising one rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1084—Rotary wheel comprising two flow rotor segments

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Central Air Conditioning (AREA)
  • Air Conditioning Control Device (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Drying Of Gases (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は除湿方法及びその装置に係り、特にクリーンルームのような低湿度環境が要求されるドライルームに除湿エアを供給するための除湿方法及びその装置に関する。
【０００２】
【従来の技術】
湿度の調整を必要とするドライルームの空間を空調するにあたり、外気の取込量が多いクリーンルーム設備などにおいては、特に外気の湿度が高くなる夏期に取込外気の潜熱負荷を低減するものとして、乾式除湿装置が外気除湿装置として用いられている。
【０００３】
図４に示す従来の乾式除湿装置１０は、本体ケーシング１２が仕切板１４によって処理部１６と再生部１８とに分割され、処理部１６には、処理側空気フィルタ２０、処理側ファン２２、除湿ロータ２４、及び処理側冷却コイル２６が設置される。処理部１６は、取入口２８及び不図示のダクトを介してクリーンルームに接続されるとともに、供給口３０及び不図示のダクトを介してクリーンルームに接続されている。
【０００４】
処理側ファン２２を駆動すると、クリーンルームの空気が処理側ファン２２で吸引される。この空気は、取入口２８から処理側空気フィルタ２０を介して処理部１６に導入された後、除湿ロータ２４を通過する。 この際、空気中に含まれる水蒸気分が除湿ロータ２４に吸着されるが、吸着される際に発生する吸着熱によって空気が加熱される。 この昇温した空気は、冷却コイル２６によって所定の温度に冷却された後、供給口３０及び不図示のダクトを介してクリーンルームに戻される。これにより、クリーンルームが所定の低湿度環境に維持される。
【０００５】
一方、再生部１８には再生側空気フィルタ３２、再生側ファン３４、加熱コイル３６、及び除湿ロータ２４等が設置されている。 この再生部１８は、外気取入口３８を介して外気に連通されるとともに、排気口４０を介して外気に連通されている。
【０００６】
除湿ロータ２４は、処理部１６と再生部１８との間で回転自在に設けられるとともに所定の速度で回転している。除湿ロータ２４は、処理部１６の空気の水分を吸着した後、再生部１８へと回転する。 再生部１８には、再生側ファン３４の駆動によって再生空気（外気）が再生側空気フィルタ３２を介して導入され、この空気が加熱コイル３６によって、除湿ロータ２４の湿分を脱着するのに必要な所定の温度まで昇温される。 昇温された再生空気は、除湿ロータ２４に吸着している湿分を脱着させる。 この脱着反応により、空気自身は冷却されて温度が低下した後、排気口４０から外部に排気される。
【０００７】
ここで、除湿性能を確保するために再生部１８には、加熱コイル３６と除湿ロータ２４との間に加熱後空気温度センサ４２が設置されている。センサ４２による検出温度が所定の温度になるように、加熱コイル熱媒配管４４に設置された加熱コイル熱媒流量制御装置４６を再生温度コントローラ４８で制御している。
【０００８】
【発明が解決しようとする課題】
しかしながら、前記従来の除湿装置では、除湿能力を発揮させるため、再生部１８での空気の風量は固定されていたので、処理する外気の湿度が変化した場合には、再生に要する風量が過大となり、再生側ファン３４の動力が必要以上にかかっていた。 また、最大風量を所定の温度まで昇温させる必要があり、加熱コイル３６でも過大な熱量を必要としていた。
【０００９】
また、過大に加熱を行うことにより、回転している除湿ロータ２４の温度が上昇し、回転に伴い処理部１６に余分な熱量が持ち込まれることとなり、冷却コイル２６の負荷が増大し、除湿性能が低下する欠点があった。
【００１０】
本発明はこのような事情に鑑みてなされたもので、前記従来技術の欠点を解消し、再生側ファン動力及び処理側冷却コイルの負荷を低減することにより、省エネ性の優れた除湿方法及びその装置を提供することを目的とする。
【００１１】
【課題を解決するための手段】
本発明は、前記目的を達成するために、湿分の調整を必要とする処理側の空気を搬送する処理側空気ファン及び該空気中の湿分を回転しながら吸着する除湿ロータ、該除湿ロータで除湿されて昇温した処理側空気を冷却する冷却コイル、湿分を吸着した除湿ロータに対し湿分を除去するための再生側の空気を搬送する再生側空気ファン、再生側空気ファンで搬送された再生側空気を除湿ロータの上流側で昇温させる加熱コイルを備え、除湿ロータを処理側と再生側との間で回転させながら、処理側で処理側空気から湿分を吸着し、再生側で再生側高温空気により湿分を脱離させることにより、処理側空気の湿分を除去する除湿方法において、再生側空気の除湿ロータ通過後の除湿ロータ回転方向再生側終端付近の回転方向に沿った異なる２点で除湿ロータ出口温度を測定し、この温度差が小さくなるようにコントローラで再生側ファンを制御することを特徴とする。
【００１２】
本発明は、前記目的を達成するために、湿分の調整を必要とする処理側の空気を搬送する処理側空気ファン及び該空気中の湿分を回転しながら吸着する除湿ロータ、該除湿ロータで除湿されて昇温した処理側空気を冷却する冷却コイル、湿分を吸着した除湿ロータに対し湿分を除去するための再生側の空気を搬送する再生側空気ファン、再生側空気ファンで搬送された再生側空気を除湿ロータの上流側で昇温させる加熱コイルを備え、除湿ロータを処理側と再生側との間で回転させながら、処理側で処理側空気から湿分を吸着し、再生側で再生側高温空気により湿分を脱離させることにより、処理側空気の湿分を除去する除湿装置において、再生側空気の除湿ロータ通過後の除湿ロータ回転方向再生側終端付近の回転方向に沿った異なる２点で除湿ロータ出口温度を検出する再生側ロータ出口用温度センサと、該温度センサの検出値に応じて再生側ファンを制御するコントローラとを備え、前記温度センサによる検出温度差が小さくなるように、前記コントローラで再生側ファンを制御することを特徴とする。
【００１３】
本発明によれば、再生側空気の除湿ロータ通過後の除湿ロータ回転方向再生側終端付近に除湿ロー夕出口温度センサを取り付け、その検出値が最適になるように、再生側ファンを制御することで、再生側ファン動力及び処理側冷却コイルの負荷を低減することができる。 また、処理側に持ち込まれる余分な熱量を減少させることで、除湿性能の低下を防止できる。
【００１４】
本願出願の着目点は、除湿ロータ再生に要する熱量を削減するという点であり、再生側終端部において除湿ロータが完全又は完全に近い程度に再生されていればいいとの考えから、再生側終端部付近の温度を検出して再生が完全又は完全に近い状態かどうかを判定することで最適な制御が可能となる。ここで再生が完全に近い状態というのは、水分の脱着が無い状態であり、その場合には除湿ロータの入口温度と出口温度が近づく。
【００１５】
【発明の実施の形態】
以下添付図面に従って本発明に係る除湿方法及びその装置の好ましい実施の形態について詳説する。
【００１６】
図１は、実施の形態の除湿装置５０の構造図であり、図４に示した従来の除湿装置１０と同一又は類似の部材については同一の符号を付して説明する。
【００１７】
図１に示す乾式除湿装置５０は、箱体に形成された本体ケーシング１２が仕切板１４によって処理部１６と再生部１８とに分割され、処理部１６には、処理側空気フィルタ２０、処理側ファン２２、除湿ロータ２４、及び処理側冷却コイル２６が設置される。処理部１６は、図１の左端部に形成された取入口２８及び不図示のダクトを介してクリーンルームに接続されるとともに、図１の右端部に形成された供給口３０及び不図示のダクトを介してクリーンルームの内調機に接続されている。
【００１８】
処理側ファン２２を駆動すると、クリーンルームの空気が処理側ファン２２で吸引される。この空気は、取入口２８から処理側空気フィルタ２０を介して処理部１６に導入された後、除湿ロータ２４を通過する。 この際、空気中に含まれる水蒸気分が除湿ロータ２４に吸着されるが、吸着される際に発生する吸着熱によって空気が加熱される。 この昇温した空気は、冷却コイル２６によってクリーンルームに適した所定の温度に冷却された後、供給口３０及び不図示のダクトを介してクリーンルームの内調機に戻される。これにより、クリーンルームが所定の温度及び低湿度環境に維持される。
【００１９】
一方、再生部１８には再生側空気フィルタ３２、再生側ファン３４、加熱コイル３６、及び除湿ロータ２４等が設置されている。 この再生部１８は、図１の右端部に形成された外気取入口３８を介して外気に連通されるとともに、図１の左端部に形成された排気口４０を介して外気に連通されている。
【００２０】
除湿ロータ２４は、処理部１６と再生部１８との間で回転自在に設けられるとともに不図示のモータの駆動力で所定の速度で回転している。この除湿ロータ２４は、処理部１６の空気の水分を吸着した後、再生部１８へと回転する。 再生部１８には、再生側ファン３４の駆動によって再生空気（外気）が再生側空気フィルタ３２を介して導入され、この空気が加熱コイル３６によって、除湿ロータ２４の湿分を脱着するのに必要な所定の温度まで昇温される。 昇温された再生空気は、除湿ロータ２４に吸着している湿分を脱着させる。 この脱着反応により、空気自身は冷却されて温度が低下した後、排気口４０から外部に排気される。
【００２１】
ここで、除湿性能を確保するために再生部１８には、加熱コイル３６と除湿ロータ２４との間に加熱後の空気温度を検出するセンサ４２が設置されている。このセンサ４２による検出温度が除湿ロータ２４にとって好適な温度になるように、加熱コイル熱媒配管４４に設置された加熱コイル熱媒流量制御装置４６を再生温度コントローラ４８で制御している。
【００２２】
ところで、実施の形態の除湿装置５０には、再生側空気の除湿ロータ２４を通過した後の、除湿ロータ回転方向再生側終端付近（図２参照）の温度を検出する再生出口温度センサ５２が設置されている。また、その温度センサ５２の検出値に応じて再生側ファン３４を制御する再生側風量コントローラ５４が設置されている。このコントローラ５４は、温度センサ５２による温度検出位置の温度が最適値になるように再生側ファン３４を制御する。これにより、実施の形態の除湿装置５０は、再生側風量を最適にコントロールでき、よって、再生側ファン３４の動力を削減できる。 また、最大風量を所定の温度まで昇温させる必要がなくなり、同時に加熱コイル３６での加熱量を削減できる。
【００２３】
図３は、再生側空気の除湿ロータ通過後の除湿ロータ回転方向再生側終端付近と、その手前１５°程度の２カ所に温度センサ５２、５６を設けた例を示している。この２カ所の温度センサ５２、５６で検出される温度が同じ値になるように、図１のコントローラ５４で再生側ファン３４を制御する。
【００２４】
２つの温度センサ５２、５４を設けた理由とその角度（１５°）について説明する。除湿ロータは再生側での回転が進むに従って、再生側に流した高温の空気により吸着した湿分を放出し再生する。一方、除湿ロータを通過した空気は湿分を貰い受け、貰い受けた湿分量に応じて温度が低下する。ここで、除湿ロータから完全に水分が無くなった場合には、除湿ロータを通過する空気の温度は変化しないが、実際の運転では除湿ロータを完全に再生することは難しく、除湿ロータ終端部でも湿分が残っており、再生空気の除湿ロータ前後での湿分は少し変化する。ここで、回転方向に沿った角度毎の除湿ロータ出口温度を測定し、回転方向に沿った出口温度の変化が小さくなってくれば再生がほぼ完了したとみなすことができる。以上のような点から出口温度を２点測定してその変化がほとんど無くなるように設定すれば、除湿ロータはほぼ完全に再生できる。
【００２５】
また、角度を１５度に設定した理由は、除湿ロータの再生部分は１８０°（半円）なので、その手前１割くらいの場所（１８°）で除湿ロータが完全に再生できているようにすれば、実用的に問題ないと考えて１５°と設定した。また、１５°に限らず、本当に最適な運転ならば終端部の微少角度の２点でよいと考えられる。
【００２６】
なお、先に延べた除湿装置５０では、除湿ロータ出口空気温度を検出して制御を行ったが、同様に除湿ロータ本体の温度を測定して制御を行っても良い。
【００２７】
また、除湿ロータ出口空気温度検出値によって、再生側ファン３４と加熱コイル３６の両方を同時に制御しても良い。
【００２８】
【発明の効果】
以上の説明より本発明に係る除湿方法及びその装置によれば、再生側空気の除湿ロータ通過後の除湿ロータ回転方向再生側終端付近に除湿ロー夕出口温度センサを取り付け、その検出値が最適になるように、再生側ファンを制御することで、再生側ファン動力及び処理側冷却コイルの負荷を低減することができる。 また、処理側に持ち込まれる余分な熱量を減少させることで、除湿性能の低下を防止できる。
【図面の簡単な説明】
【図１】実施の形態の除湿装置の構造図
【図２】温度センサの取付位置の一例を示す図
【図３】２つの温度センサの取付位置の一例を示す図
【図４】従来の除湿装置の構造図
【符号の説明】
１０、５０…除湿装置、１２…本体ケーシング、１６…処理部、１８…再生部、２０…処理側空気フィルタ、２２…処理側ファン、２４…除湿ロータ、２６…処理側冷却コイル、３２…再生側空気フィルタ、３４…再生側ファン、３６…加熱コイル、４２、５２、５６…温度センサ、５４…コントローラ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dehumidification method and apparatus, and more particularly to a dehumidification method and apparatus for supplying dehumidified air to a dry room where a low humidity environment such as a clean room is required.
[0002]
[Prior art]
In air conditioning a dry room that requires humidity adjustment, especially in clean room facilities that take in a large amount of outside air, especially in the summer when the humidity of the outside air is high, the latent heat load of the outside air is reduced. A dry dehumidifier is used as an outside air dehumidifier.
[0003]
In the conventional dry dehumidifying apparatus 10 shown in FIG. 4, a main body casing 12 is divided into a processing unit 16 and a regeneration unit 18 by a partition plate 14. The rotor 24 and the processing side cooling coil 26 are installed. The processing unit 16 is connected to the clean room via an intake port 28 and a duct (not shown), and is connected to the clean room via a supply port 30 and a duct (not shown).
[0004]
When the processing side fan 22 is driven, the air in the clean room is sucked by the processing side fan 22. The air is introduced into the processing unit 16 from the intake port 28 via the processing-side air filter 20 and then passes through the dehumidifying rotor 24. At this time, the water vapor component contained in the air is adsorbed by the dehumidifying rotor 24, but the air is heated by the heat of adsorption generated when adsorbed. The heated air is cooled to a predetermined temperature by the cooling coil 26 and then returned to the clean room through the supply port 30 and a duct (not shown). Thereby, the clean room is maintained in a predetermined low humidity environment.
[0005]
On the other hand, the regeneration unit 18 is provided with a regeneration-side air filter 32, a regeneration-side fan 34, a heating coil 36, a dehumidifying rotor 24, and the like. The regeneration unit 18 communicates with the outside air through the outside air intake 38 and communicates with the outside air through the exhaust port 40.
[0006]
The dehumidifying rotor 24 is rotatably provided between the processing unit 16 and the reproducing unit 18 and is rotated at a predetermined speed. The dehumidifying rotor 24 rotates to the regeneration unit 18 after adsorbing moisture in the air of the processing unit 16. Regeneration air (outside air) is introduced into the regeneration unit 18 through the regeneration side air filter 32 by driving the regeneration side fan 34, and this air is necessary for dehumidifying the dehumidification rotor 24 by the heating coil 36. The temperature is raised to a predetermined temperature. The heated regeneration air desorbs moisture adsorbed on the dehumidification rotor 24. By this desorption reaction, the air itself is cooled and the temperature is lowered, and then is exhausted to the outside through the exhaust port 40.
[0007]
Here, in order to ensure the dehumidifying performance, the regenerating unit 18 is provided with a post-heating air temperature sensor 42 between the heating coil 36 and the dehumidifying rotor 24. The heating coil heat medium flow control device 46 installed in the heating coil heat medium pipe 44 is controlled by the regeneration temperature controller 48 so that the temperature detected by the sensor 42 becomes a predetermined temperature.
[0008]
[Problems to be solved by the invention]
However, in the conventional dehumidifying apparatus, the air volume in the regeneration unit 18 is fixed in order to exert the dehumidifying capability. Therefore, when the humidity of the outside air to be processed changes, the air volume required for regeneration becomes excessive. The power of the reproduction side fan 34 was more than necessary. Further, it is necessary to raise the maximum air volume to a predetermined temperature, and the heating coil 36 also requires an excessive amount of heat.
[0009]
Further, when the heating is excessive, the temperature of the rotating dehumidifying rotor 24 rises, and extra heat is brought into the processing unit 16 with the rotation, increasing the load on the cooling coil 26 and dehumidifying performance. There was a drawback of lowering.
[0010]
The present invention has been made in view of the above circumstances, and eliminates the disadvantages of the prior art and reduces the load on the regeneration side fan power and the processing side cooling coil. An object is to provide an apparatus.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a processing-side air fan that conveys processing-side air that requires adjustment of moisture, a dehumidification rotor that adsorbs moisture in the air while rotating, and the dehumidification rotor Cooling coil that cools the processing side air that has been dehumidified and heated, and the regeneration side air fan that transports the regeneration side air to remove the moisture to the dehumidification rotor that has absorbed the moisture, transported by the regeneration side air fan A heating coil that raises the temperature of the regenerated air on the upstream side of the dehumidifying rotor, while the dehumidifying rotor rotates between the processing side and the regenerating side, adsorbs moisture from the processing side air on the processing side and regenerates it. In the dehumidification method for removing moisture from the processing side air by dehumidifying the moisture with the high temperature air on the regeneration side, the dehumidification rotor rotation direction after passing the dehumidification rotor of the regeneration side air in the rotation direction near the regeneration side end Two different points along The dehumidification rotor outlet temperature was measured, and controlling the reproduction side fan controller so that this temperature difference is small.
[0012]
In order to achieve the above object, the present invention provides a processing-side air fan that conveys processing-side air that requires adjustment of moisture, a dehumidification rotor that adsorbs moisture in the air while rotating, and the dehumidification rotor Cooling coil that cools the processing side air that has been dehumidified and heated, and the regeneration side air fan that transports the regeneration side air to remove the moisture to the dehumidification rotor that has absorbed the moisture, transported by the regeneration side air fan A heating coil that raises the temperature of the regenerated air on the upstream side of the dehumidifying rotor, while the dehumidifying rotor rotates between the processing side and the regenerating side, adsorbs moisture from the processing side air on the processing side and regenerates it. In the dehumidifying device that removes moisture from the processing side air by dehumidifying the moisture with the regeneration side hot air on the side, the dehumidification rotor rotation direction after passing the dehumidification rotor of the regeneration side air in the rotation direction near the regeneration side end Two different points along A temperature sensor for reproducing side rotor outlet for detecting the dehumidification rotor outlet temperature, and a controller for controlling the reproducing side fan in accordance with the detected value of the temperature sensor, so that the detection temperature difference by the temperature sensor decreases, the The reproduction side fan is controlled by a controller.
[0013]
According to the present invention, the dehumidification low evening outlet temperature sensor is mounted near the regeneration side end of the dehumidification rotor rotation direction after the regeneration side air passes through the dehumidification rotor, and the regeneration side fan is controlled so that the detected value becomes optimum. Thus, the regeneration side fan power and the load on the processing side cooling coil can be reduced. Moreover, the fall of dehumidification performance can be prevented by reducing the excess calorie | heat amount brought into the process side.
[0014]
The focus of the present application is to reduce the amount of heat required for regeneration of the dehumidifying rotor, and from the idea that the dehumidifying rotor should be completely or completely regenerated at the regeneration-side termination, Optimal control is possible by detecting the temperature in the vicinity of the section and determining whether the regeneration is complete or nearly complete. Here, the state in which the regeneration is almost complete is a state in which moisture is not desorbed, and in this case, the inlet temperature and the outlet temperature of the dehumidifying rotor approach each other.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a dehumidification method and apparatus according to the present invention will be described in detail with reference to the accompanying drawings.
[0016]
FIG. 1 is a structural diagram of a dehumidifying device 50 according to the embodiment, and members that are the same as or similar to those of the conventional dehumidifying device 10 shown in FIG.
[0017]
A dry-type dehumidifier 50 shown in FIG. 1 has a main body casing 12 formed in a box body divided into a processing unit 16 and a regeneration unit 18 by a partition plate 14. The processing unit 16 includes a processing-side air filter 20 and a processing side. A fan 22, a dehumidifying rotor 24, and a processing side cooling coil 26 are installed. The processing unit 16 is connected to the clean room via an intake port 28 formed at the left end portion of FIG. 1 and a duct (not shown), and a supply port 30 formed at the right end portion of FIG. It is connected to the internal air conditioner of the clean room.
[0018]
When the processing side fan 22 is driven, the air in the clean room is sucked by the processing side fan 22. The air is introduced into the processing unit 16 from the intake port 28 via the processing-side air filter 20 and then passes through the dehumidifying rotor 24. At this time, the water vapor component contained in the air is adsorbed by the dehumidifying rotor 24, but the air is heated by the heat of adsorption generated when adsorbed. The heated air is cooled to a predetermined temperature suitable for the clean room by the cooling coil 26, and then returned to the internal air conditioner of the clean room through the supply port 30 and a duct (not shown). Thereby, the clean room is maintained in a predetermined temperature and low humidity environment.
[0019]
On the other hand, the regeneration unit 18 is provided with a regeneration-side air filter 32, a regeneration-side fan 34, a heating coil 36, a dehumidifying rotor 24, and the like. The regenerator 18 communicates with the outside air through an outside air inlet 38 formed at the right end of FIG. 1 and communicates with the outside air through an exhaust port 40 formed at the left end of FIG. .
[0020]
The dehumidifying rotor 24 is rotatably provided between the processing unit 16 and the reproducing unit 18 and is rotated at a predetermined speed by a driving force of a motor (not shown). The dehumidification rotor 24 rotates to the regeneration unit 18 after adsorbing moisture in the air of the processing unit 16. Regeneration air (outside air) is introduced into the regeneration unit 18 through the regeneration side air filter 32 by driving the regeneration side fan 34, and this air is necessary for dehumidifying the dehumidification rotor 24 by the heating coil 36. The temperature is raised to a predetermined temperature. The heated regeneration air desorbs moisture adsorbed on the dehumidification rotor 24. By this desorption reaction, the air itself is cooled and the temperature is lowered, and then is exhausted to the outside through the exhaust port 40.
[0021]
Here, in order to ensure the dehumidifying performance, the regenerator 18 is provided with a sensor 42 for detecting the air temperature after heating between the heating coil 36 and the dehumidifying rotor 24. The regenerative temperature controller 48 controls the heating coil heat medium flow rate control device 46 installed in the heating coil heat medium piping 44 so that the temperature detected by the sensor 42 becomes a temperature suitable for the dehumidification rotor 24.
[0022]
By the way, the dehumidifying device 50 of the embodiment is provided with a regeneration outlet temperature sensor 52 that detects the temperature near the end of the dehumidification rotor rotation direction regeneration side (see FIG. 2) after passing through the dehumidification rotor 24 of the regeneration side air. Has been. A regeneration-side air volume controller 54 that controls the regeneration-side fan 34 according to the detected value of the temperature sensor 52 is installed. The controller 54 controls the reproduction-side fan 34 so that the temperature at the temperature detection position by the temperature sensor 52 becomes an optimum value. As a result, the dehumidifying device 50 according to the embodiment can optimally control the regeneration-side air volume, and thus can reduce the power of the regeneration-side fan 34. Further, it is not necessary to raise the maximum air volume to a predetermined temperature, and at the same time, the amount of heating in the heating coil 36 can be reduced.
[0023]
FIG. 3 shows an example in which the temperature sensors 52 and 56 are provided in the vicinity of the end of the regeneration side in the rotational direction of the dehumidifying rotor after the regeneration side air passes through the dehumidifying rotor and at about 15 ° in front of it. The reproduction-side fan 34 is controlled by the controller 54 in FIG. 1 so that the temperatures detected by the two temperature sensors 52 and 56 have the same value.
[0024]
The reason why the two temperature sensors 52 and 54 are provided and the angle (15 °) will be described. As the rotation on the regeneration side proceeds, the dehumidification rotor releases and regenerates moisture adsorbed by the high-temperature air that has flowed to the regeneration side. On the other hand, the air that has passed through the dehumidifying rotor scoops and receives moisture, and the temperature decreases according to the amount of moisture received. Here, when the moisture from the dehumidification rotor is completely lost, the temperature of the air passing through the dehumidification rotor does not change, but it is difficult to completely regenerate the dehumidification rotor in actual operation, and the dehumidification rotor end part is also dehumidified. The amount of moisture before and after the dehumidification rotor of the regeneration air changes slightly. Here, the dehumidification rotor outlet temperature for each angle along the rotation direction is measured, and if the change in the outlet temperature along the rotation direction becomes smaller, it can be considered that the regeneration is almost completed. From the above points, if the outlet temperature is measured at two points and set so that the change hardly occurs, the dehumidifying rotor can be almost completely regenerated.
[0025]
The reason why the angle is set to 15 degrees is that the regeneration part of the dehumidification rotor is 180 ° (semicircle), so that the dehumidification rotor can be completely regenerated at a place about 10% (18 °) in front of it. In this case, the angle is set to 15 ° because there is no practical problem. In addition, the angle is not limited to 15 °, and it is considered that two points of a minute angle at the end portion may be sufficient if the operation is really optimum.
[0026]
In the dehumidifying device 50 extended earlier, the temperature of the dehumidifying rotor outlet air temperature is detected and controlled. However, the temperature of the dehumidifying rotor main body may be similarly measured and controlled.
[0027]
Further, both the regeneration-side fan 34 and the heating coil 36 may be controlled simultaneously by the dehumidification rotor outlet air temperature detection value.
[0028]
【The invention's effect】
From the above description, according to the dehumidification method and the apparatus thereof according to the present invention, the dehumidification low evening outlet temperature sensor is installed near the regeneration side end in the rotation direction of the dehumidification rotor after the regeneration side air passes through the dehumidification rotor, and the detected value is optimal. Thus, by controlling the regeneration side fan, it is possible to reduce the regeneration side fan power and the load on the processing side cooling coil. Moreover, the fall of dehumidification performance can be prevented by reducing the excess calorie | heat amount brought into the process side.
[Brief description of the drawings]
FIG. 1 is a structural diagram of a dehumidifying apparatus according to an embodiment. FIG. 2 is a diagram showing an example of a temperature sensor mounting position. FIG. 3 is a diagram showing an example of two temperature sensor mounting positions. Device structure diagram [Explanation of symbols]
DESCRIPTION OF SYMBOLS 10, 50 ... Dehumidification apparatus, 12 ... Main body casing, 16 ... Processing part, 18 ... Regeneration part, 20 ... Processing side air filter, 22 ... Processing side fan, 24 ... Dehumidification rotor, 26 ... Processing side cooling coil, 32 ... Regeneration Side air filter, 34 ... regenerative fan, 36 ... heating coil, 42, 52, 56 ... temperature sensor, 54 ... controller

Claims (4)

湿分の調整を必要とする処理側の空気を搬送する処理側空気ファン及び該空気中の湿分を回転しながら吸着する除湿ロータ、該除湿ロータで除湿されて昇温した処理側空気を冷却する冷却コイル、湿分を吸着した除湿ロータに対し湿分を除去するための再生側の空気を搬送する再生側空気ファン、再生側空気ファンで搬送された再生側空気を除湿ロータの上流側で昇温させる加熱コイルを備え、除湿ロータを処理側と再生側との間で回転させながら、処理側で処理側空気から湿分を吸着し、再生側で再生側高温空気により湿分を脱離させることにより、処理側空気の湿分を除去する除湿方法において、再生側空気の除湿ロータ通過後の除湿ロータ回転方向再生側終端付近の回転方向に沿った異なる２点で除湿ロータ出口温度を測定し、この温度差が小さくなるようにコントローラで再生側ファンを制御することを特徴とする除湿方法。A processing-side air fan that conveys processing-side air that requires moisture adjustment, a dehumidification rotor that absorbs moisture while rotating the air, and cools the processing-side air that has been dehumidified and heated by the dehumidification rotor A cooling coil for regenerating, a dehumidifying rotor that has adsorbed moisture, a regeneration-side air fan that conveys air on the regeneration side for removing moisture, and a regeneration-side air conveyed by the regeneration-side air fan on the upstream side of the dehumidifying rotor Equipped with a heating coil that raises the temperature, while rotating the dehumidification rotor between the processing side and the regeneration side, moisture is adsorbed from the processing side air on the processing side, and moisture is desorbed by the regeneration side hot air on the regeneration side In the dehumidification method that removes moisture from the processing-side air, the dehumidification rotor exit temperature is measured at two different points along the rotation direction near the regeneration-side end after the regeneration-side air passes through the dehumidification rotor. And this temperature Dehumidification method and controlling the reproducing-side fan controller so that the difference becomes smaller. 前記２点の測定は回転角度１５度以下の角度範囲の２点で測定することを特徴とする請求項１に記載の除湿方法。 The dehumidification method according to claim 1, wherein the two points are measured at two points in an angle range of a rotation angle of 15 degrees or less . 湿分の調整を必要とする処理側の空気を搬送する処理側空気ファン及び該空気中の湿分を回転しながら吸着する除湿ロータ、該除湿ロータで除湿されて昇温した処理側空気を冷却する冷却コイル、湿分を吸着した除湿ロータに対し湿分を除去するための再生側の空気を搬送する再生側空気ファン、再生側空気ファンで搬送された再生側空気を除湿ロータの上流側で昇温させる加熱コイルを備え、除湿ロータを処理側と再生側との間で回転させながら、処理側で処理側空気から湿分を吸着し、再生側で再生側高温空気により湿分を脱離させることにより、処理側空気の湿分を除去する除湿装置において、再生側空気の除湿ロータ通過後の除湿ロータ回転方向再生側終端付近の回転方向に沿った異なる２点で除湿ロータ出口温度を検出する再生側ロータ出口用温度センサと、該温度センサの検出値に応じて再生側ファンを制御するコントローラとを備え、前記温度センサによる検出温度差が小さくなるように、前記コントローラで再生側ファンを制御することを特徴とする除湿装置。A processing-side air fan that conveys processing-side air that requires moisture adjustment, a dehumidification rotor that absorbs moisture while rotating the air, and cools the processing-side air that has been dehumidified and heated by the dehumidification rotor A cooling coil for regenerating, a dehumidifying rotor that has adsorbed moisture, a regeneration-side air fan that conveys air on the regeneration side for removing moisture, and a regeneration-side air conveyed by the regeneration-side air fan on the upstream side of the dehumidifying rotor Equipped with a heating coil that raises the temperature, while rotating the dehumidification rotor between the processing side and the regeneration side, moisture is adsorbed from the processing side air on the processing side, and moisture is desorbed by the regeneration side hot air on the regeneration side In the dehumidifying device that removes moisture from the processing-side air, the dehumidifying rotor outlet temperature is detected at two different points along the rotational direction near the regeneration-side end after the regeneration-side air passes through the dehumidifying rotor. Play the side of the Comprising a temperature sensor for over data outlet, and a controller for controlling reproduction side fan in accordance with the detected value of the temperature sensor such that said detected temperature difference by the temperature sensor decreases, and controls the reproduction side fan by the controller A dehumidifying device characterized by that. 前記再生側ロータ出口用温度センサは、前記除湿ロータの回転方向再生側終端付近にて回転角度１５度以下の角度範囲の２点に設けられていることを特徴とする請求項３に記載の除湿装置。4. The dehumidification according to claim 3, wherein the regeneration-side rotor outlet temperature sensors are provided at two points in an angular range of a rotation angle of 15 degrees or less near the regeneration-side end in the rotation direction of the dehumidification rotor. apparatus.
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