JP2004257588A - Dehumidifying air-conditioner - Google Patents

Dehumidifying air-conditioner Download PDF

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Publication number
JP2004257588A
JP2004257588A JP2003045719A JP2003045719A JP2004257588A JP 2004257588 A JP2004257588 A JP 2004257588A JP 2003045719 A JP2003045719 A JP 2003045719A JP 2003045719 A JP2003045719 A JP 2003045719A JP 2004257588 A JP2004257588 A JP 2004257588A
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Prior art keywords
air
sensible heat
rotor
dehumidifier
dehumidifying
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JP2003045719A
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Japanese (ja)
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JP3835413B2 (en
Inventor
Yasuhiro Tojima
康博 頭島
Naoto Awazu
尚登 粟津
Takumi Sugiura
匠 杉浦
Takashi Yamashita
孝 山下
Ryoji Shimokawa
良二 下川
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Hitachi Plant Technologies 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
    • F24F2203/1004—Bearings or driving means
    • 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
    • F24F2203/1008—Rotary wheel comprising a by-pass channel
    • 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
    • F24F2203/1012—Details of the casing or cover
    • 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
    • F24F2203/1028—Rotary wheel combined with a spraying device
    • 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
    • F24F2203/104—Heat exchanger 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
    • F24F2203/1072—Rotary wheel comprising two rotors
    • 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)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dehumidifying air-conditioner having superior energy saving performance throughout the year, in any season of summer, midterm or winter. <P>SOLUTION: In a full heat exchange operation mode, compared with a dehumidifying operation mode, the humidity of outside air is low and so no dehumidifying treatment is required for an air supply passage 12, therefore eliminating the need for heating room air after ventilating a sensible heat exchanger 42. On the other hand, the temperature of outside air encircled by the air supply passage 12 is low and the temperature of the room air encircled by an air exhaust passage 14 is high and so sensible heat exchange from the air exhaust passage 14 to the air supply passage 12 is required. In the dehumidifying air-conditioner 10, a heater 50 is stopped, a dehumidifying agent rotor 40 is rotated at a high speed and sensible heat exchange is made by the dehumidifying agent rotor 40 and the sensible heat exchange 42, achieving great energy saving. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は除湿空調装置に係り、特に乾式除湿型の除湿空調装置に関する。
【０００２】
【従来の技術】
低湿度を必要とする空間を空調するにあたって、外気の取り込みを必要とするビル設備や外気取り込み量の多いクリーンルーム設備等においては、特に外気の湿度が高くなる夏期には湿分を結露させて除去する冷却コイルに多大な負荷がかかっている。この冷却コイルの負荷を低減する省エネタイプの空調装置として、例えば特許文献１や特許文献２に見られるように、除湿剤を内部に充填した除湿剤ロータを給気路と排気路とを跨ぐように回転し、給気路で外気の除湿を行うと共に排気路で除湿能力の再生が成されるようにした乾式除湿型の除湿空調装置がある。
【０００３】
図６は、従来の乾式除湿型の除湿空調装置１０の一般的な構成を示す断面図である。
【０００４】
外気の湿度が高い夏期の場合、給気路ファン３２により給気路入口２０から給気路１２へ取り込まれた外気は、給気路エアフィルタ３０を経て除湿剤ロータ４０を通過し、外気中に含まれる水分が除湿剤ロータ４０内にある除湿剤により吸着される。その際発生する吸着熱が顕熱交換器４２の顕熱交換により冷却され、給気路出口２２から給気として室内に供給される。一方、排気路ファン３６により排気路入口２４から排気路１４へ取り込まれた室内空気は、排気路エアフィルタ３４を経て顕熱交換器４２の顕熱交換により加熱され、加熱ヒータ５０で更に加熱されて除湿剤ロータ４０を通過する。通過する際、除湿剤は加熱された室内空気によって給気路１２で外気から吸着した水分が除去されて再生すると同時に、発生する気化熱により室内空気が冷却され排気路出口２６から排気される。
【０００５】
又、外気の温度及び湿度が低い冬期及び中間期（春期や秋期）の場合、給気路入口２０から取り込まれて除湿処理及び顕熱交換された外気は、給気路出口２２に設けられた給気路温湿度検出計６４の値から給気路温湿度コントローラ６６で給気路加熱ヒータ６０の加熱量と加湿器７０の加湿量とを制御することにより、所定の温湿度に調整された給気として給気路出口２２から室内へと供給される。
【０００６】
【特許文献１】
特開平１１−３２５５１０号公報
【０００７】
【特許文献１】
特開２０００−２９１９７９号公報
【０００８】
【発明が解決しようとする課題】
しかしながら、従来の除湿空調装置１０では、冬期における外気の温湿度調整に給気路加熱ヒータ６０と加湿器７０とが必要になり、せっかく除湿剤ロータ４０による省エネを図っても、冬期には満足できるほどの省エネにならないという欠点がある。
【０００９】
更に、従来の除湿空調装置１０の場合、除湿剤の再生に利用された排気路１４の加熱空気は、排気路１４の加熱ヒータ５０で発生する加熱エネルギーの約３０％程度しか利用されていないため、排気路出口２６で高温のまま室外へと排気されており、この点でも十分な省エネが達成されていないという問題がある。
【００１０】
本発明はこのような事情に鑑みてなされたもので、夏期、中間期、及び冬期にかかわらず年間を通じて省エネ性に優れた除湿空調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】
本発明の請求項１は前記目的を達成するために、外気を室内に給気する給気路と室内空気を排気する排気路との間に跨がって回転し、内部に充填された除湿剤が前記給気路で外気と接触すると共に前記排気路で室内空気と接触する除湿剤ロータと、前記給気路と前記排気路との間に跨がって設けられ、前記給気路の外気と前記排気路の室内空気との顕熱の交換を行う顕熱交換器と、前記排気路における前記除湿剤ロータと前記顕熱交換器の間に設けられ、顕熱交換器で熱交換された室内空気を前記除湿剤ロータの除湿剤を再生させる再生温度に加熱する加熱ヒータと、を備えた除湿空調装置において、前記除湿剤ロータの回転速度を可変する可変手段と、前記外気の温湿度を検出する外気温湿度検出計と、前記外気温湿度検出計で測定した測定結果に基づいて前記可変手段により前記除湿剤ロータの回転速度を制御する制御手段と、を設けたことを特徴とする。
【００１２】
本発明の請求項１によれば、制御手段が外気の温湿度に基づいて可変手段を制御することで、除湿剤ロータの回転速度を可変できるようにした。これにより、除湿剤ロータを低速回転することにより、除湿剤ロータを従来の除湿空調装置と同様に除湿器として使用し、逆に、除湿剤ロータを高速回転することにより、除湿剤ロータを除湿器としてだけでなく、いわゆる全熱交換器として主に使用することができる。この全熱交換器は、顕熱だけでなく空気中の水分即ち潜熱の交換も行う。従って、冬期や中間期のように外気の湿度が低く、室内に給気する空調空気の温湿度から見て除湿剤ロータで外気を除湿する必要のない場合には、除湿剤ロータを全熱交換器として使用すれば、排気路において顕熱交換器及び加熱ヒータで加熱された空気の顕熱や潜熱を給気路を流れる外気の加熱や加湿に利用することができる。これにより、本発明では、図６に示した給気路加熱ヒータや加湿器が必要なくなるので、大幅な省エネを行うことができる。
【００１３】
本発明の場合、外気の温湿度に基づいて除湿剤ロータの回転速度を可変することに加えて、排気路の加熱ヒータの温度も制御するようにすれば、給気路における外気の温湿度調整がし易くなると共に一層の省エネになる。
【００１４】
本発明の請求項２は請求項１において、前記制御手段は、前記外気温湿度検出計で測定した外気の測定結果に基づいて、前記除湿剤ロータで外気の除湿が必要な除湿運転モードと除湿が不必要な全熱交換運転モードとの２モードに切り換え制御すると共に、前記除湿運転モードに切り替わると、前記除湿剤ロータが１０〜３０ｒｐｈ で低速回転し、前記全熱交換運転モードに切り替わると５００〜１５００ｒｐｈ で高速回転することを特徴とする。
【００１５】
本発明の請求項２は、制御手段による制御の一例を示したもので、制御手段は、外気温湿度検出計で測定した外気の測定結果に基づいて、除湿剤ロータで外気の除湿が必要な除湿運転モード（夏期）と除湿が不必要な全熱交換運転モード（冬期と中間期）との２モードに切り換え制御する。そして、除湿運転モードのときには、除湿剤ロータが１０〜３０ｒｐｈ で低速回転して除湿器として使用する。又、全熱交換運転モードのときには、除湿剤ロータが５００〜１５００ｒｐｈ で高速回転して全熱交換器として使用する。
【００１６】
本発明の請求項３は請求項１又は２において、前記給気路には、前記顕熱交換器の上流側と下流側とを繋ぐ顕熱交換器バイパスダクト及び／又は前記除湿剤ロータの上流側と下流側とを繋ぐ除湿剤ロータバイパスダクトが形成されると共に、各バイパスダクトにはバイパスさせる風量を調整するためのダンパーが設けられていることを特徴とする。
【００１７】
外気の温湿度によっては、給気路に取り込まれた外気の全量を除湿剤ロータや顕熱交換器に通さなくても室内へ給気する所望の温湿度を得ることができる場合があり、このような場合に外気の全量を通すことは除湿剤ロータや顕熱交換器での圧力損失を生じる。従って、本発明のように除湿剤ロータバイパスダクトを形成すれば、外気の湿度が低くて除湿剤ロータの除湿能力が小さくてよい場合には、除湿剤ロータバイパスダクトのダンパー開度を調整して、外気の一部を除湿剤ロータバイパスダクトに流してやることができ、圧力損失を低減できる。又、顕熱交換器バイパスダクトの場合にも同様である。これにより、給気路に外気を取り込む、ファン等の負荷が小さくなるので、省エネになる。
【００１８】
本発明の請求項４は請求項１〜３の何れか１において、前記顕熱交換器を前記給気路と前記排気路との間に跨がって回転するロータ型の顕熱交換ロータで構成し、前記排気路には、前記顕熱交換ロータの下流側と前記除湿剤ロータの下流側とを繋ぐ排気路バイパスダクトを設けると共に該バイパスダクトにバイパスさせる風量を調整するダンパーを設け、前記顕熱交換器における回転方向終端部を通過する室内空気が前記バイパスダクトを流れるようにしたことを特徴とする。
【００１９】
本発明者は、ロータ型の顕熱交換器の場合、排気路において顕熱交換器の回転方向終端部を通過した室内空気は、他の部分を通過した室内空気よりも低温であり、加熱ヒータに達する室内空気の温度を下げる要因になっているとの知見を得た。又、冬期のように外気の温度が低いときには除湿剤ロータでも全熱交換が行われるので、室内空気を加熱ヒータに通してしまうと、それだけ前記加熱ヒータによる加熱が必要となり、省エネの点で問題がある。そこで、本発明では、顕熱交換ロータの下流側と除湿剤ロータの下流側とを繋ぐ排気路バイパスダクトを設けると共に該バイパスダクトにバイパスさせる風量を調整するダンパーを設け、排気路において顕熱交換器の回転方向終端部を通過した室内空気が加熱ヒータに供給されないようにしたので、加熱ヒータの省エネを行うことができる。又、バイパスダクトを流れた室内空気をそのまま排気しても、低温なので問題ない。
【００２０】
本発明の請求項５は請求項４において、前記顕熱交換器における回転方向終端部は、顕熱交換器における回転方向から見て１５０〜１８０°の位置であることを特徴とする。これは、顕熱交換器における回転方向終端部の好ましい位置を具体的に示したもので、この角度範囲における室内空気をバイパスダクトにバイパスさせることが好ましい。
【００２１】
【発明の実施の形態】
以下添付図面に従って、本発明に係わる除湿空調装置の好ましい実施の形態について詳説する。
【００２２】
図１及び図２は、本発明の除湿空調装置における第１の実施の形態の全体構成を示した斜視図及び断面図であり、可変手段、外気温湿度検出器、及び制御手段を設けた例である。尚、図６と同じ装置、部材は同符号を符して説明する。
【００２３】
これらの図に示すように、除湿空調装置１０における主な構成は図６で示した除湿空調装置１０と同様であるが、給気路１２において、給気路ファン３２と除湿剤ロータ４０との間に取り込まれた外気の温湿度を監視する外気温湿度検出器４６と、除湿剤ロータ４０の変速回転を可能とする可変手段であるモータ４４と、制御手段である除湿剤ロータ４０の運転を制御する運転切り替えコントローラ４８とが設けられており、運転切り替えコントローラ４８は、外気温湿度検出器４６とモータ４４と排気路温度コントローラ５６と信号ケーブルを介して接続している。そして、図６で示した従来の除湿空調装置１０に設けられていた給気路加熱ヒータ６０、給気路加熱ヒータ熱媒配管６２、給気路温湿度検出計６４、給気路温湿度コントローラ６６、給気路熱媒流量制御装置６８は除去されている。尚、白色矢印は給気又は排気が流れる方向を、黒色点線矢印は検出値や制御信号等の情報が送られる方向を示している。
【００２４】
次に、上述した本発明第１の実施の形態における除湿空調装置１０の作用について説明する。
【００２５】
外気の温湿度が高い夏期では、運転切り替えコントローラ４８は、外気温湿度検出器４６の検出値に基づき自動的に除湿運転モードへ運転を切り替えて、除湿剤ロータ４０を１０〜３０ｒｐｈ で低回転させると共に排気路温度コントローラ５６を介して加熱ヒータ５０のバルブ５８の開閉を制御することにより加熱ヒータの温度を調整する。すると、給気路ファン３２により給気路入口２０から取り込まれた外気は、給気路エアフィルタ３０を経て除湿剤ロータ４０を通過することにより外気中に含まれる水分を除湿剤ロータ４０内の除湿剤で吸着する。吸着される際に発生する吸着熱により除湿処理された外気が加熱され、顕熱交換器４２において顕熱の交換を行うことにより冷却されて給気路出口２２から室内に給気される。一方、排気路ファン３６により排気路１４へ取り込まれた室内空気は、排気路入口２４から排気路エアフィルタ３４を経て顕熱交換器４２において顕熱の交換を行うことにより加熱され、加熱ヒータ５０において除湿剤ロータ４０の湿分を除去するのに必要な温度まで加熱されて除湿剤ロータ４０を通過する。除湿剤ロータ４０は回転しているので、除湿剤ロータ４０内の除湿剤が給気路１２と排気路１４とを循環しており、排気路１４で加熱された室内空気によって、給気路１２において除湿剤に吸着した水分が除去されて除湿剤が再生される。その際に生じる気化熱により、室内空気が冷却されて排気路出口２６から室外へと排出される。
【００２６】
外気の温度及び湿度が低い冬期及び中間期（春期及び秋期）では、運転切り替えコントローラ４８は、外気温湿度検出器４６の検出値に基づき自動的に全熱交換運転モードへ運転を切り替えて、除湿剤ロータ４０を５００〜１５００ｒｐｈ で高回転させる排気路温度コントローラ５６を介して加熱ヒータ５０のバルブ５８の開閉を制御することにより加熱ヒータ５０の温度を調整する。すると、給気路ファン３２により給気路入口２０から取り込まれた外気は、給気路エアフィルタ３０を経て除湿剤ロータ４０へ供給される。回転している除湿剤ロータ４０において、排気路１４に設けられた加熱ヒータ５０で温度調整された室内空気と顕熱の交換を行い、そして顕熱交換器４２において顕熱の交換を行うことにより更に加熱されて、外気が全熱交換される。こうして全熱交換により加熱された外気は給気路出口２２から給気として室内に供給される。一方、排気路ファン３６により排気路１４へ取り込まれた室内空気は、排気路入口２４から排気路エアフィルタ３４を経て顕熱交換器４２で顕熱の交換を行うことにより冷却される。そして、回転している除湿剤ロータ４０で給気路１２に取り込まれた外気と全熱交換を行うことにより、室内空気が冷却されて排気路出口２６から室外へと排気される。
【００２７】
係る除湿空調装置１０の運転において、全熱交換運転モードでは、通常の除湿空調運転である除湿運転モードと比較して、外気の湿度が低いので給気路１２における除湿処理は除湿は必要とされず、従って顕熱交換器４２通風後の室内空気を加熱する必要性がない。一方、給気路１２に取り込まれた外気の温度は低く、排気路１４に取り込まれた室内空気の温度は高いので、排気路１４から給気路１２への顕熱交換が必要とされる。そこで、再生側加熱ヒータ５０を停止させて除湿剤ロータ４０を高速回転させて、除湿剤ロータ４０及び顕熱交換器４２で全熱交換を行うことにより、排気路１４における室内空気と給気路１２の外気との熱交換を効率よく行うことができ、且つ大幅な省エネを行うことができる。
【００２８】
図３は、本発明の除湿空調装置１０の第２の実施の形態の全体構成を示した示した断面図であり、給気路１２に２つのバイパスダクトを設けた例である。
【００２９】
図３に示すように、除湿空調装置１０の主な構成は図２の除湿空調装置１０と同様であるが、給気路１２において、除湿剤ロータ４０の上流側と下流側とを直接通風させる除湿剤ロータバイパスダクト７２と、除湿剤ロータバイパスダクト７２の風量を調整する除湿剤ロータダンパ７４と、顕熱交換器４２の上流側と下流側を直接通風させる顕熱交換器バイパスダクト７６と、顕熱交換器バイパスダクト７６の風量を調整する顕熱交換器ダンパ７８とが設けられている。尚、除湿剤ロータダンパ７４及び顕熱交換器ダンパ７８は運転切り替えコントローラ４８と信号ケーブルを介して接続しており、給気路１２の除湿剤ロータ４０上流側に設けられた外気温湿度検出器４６の検出値を基に、運転切り替えコントローラ４８から各ダンパ７４、７８の閉開を制御することにより、各バイパス７２、７６を通過させる風量が調整される。
【００３０】
次に、上述した本発明第２の実施の形態における除湿空調装置１０の作用について説明する。
【００３１】
外気の温湿度によっては、給気路１２に取り込まれた外気の全てを除湿剤ロータ４０及び顕熱交換器４２を通過させて除湿処理及び顕熱交換を行わなくても、室内へ吸気する所望の温湿度を得ることができる場合がある。このような場合にも外気の全てを通過させてしまうと、除湿剤ロータ４０及び顕熱交換器４２に負荷がかかって圧力損失を生じる虞がある。従って、外気温湿度検出器４６の値を基に、運転切り替えコントローラ４８で制御されている除湿剤ロータダンパ７４及び／又は顕熱交換器ダンパ７８を自動的に開閉させることにより、外気の一部が除湿剤ロータバイパスダクト７２及び／又は顕熱交換器バイパスダクト７６へ流れて、除湿剤ロータ４０及び／又は顕熱交換器４２を通過する外気の量を調整することができる。これにより、給気路ファン３２等にかかる負荷を最小限に押さえられ、且つ更なる省エネにつながる。
【００３２】
図４は、本発明の除湿空調装置１０の第３の実施の形態の全体構成を示した斜視図であり、排気路１４にバイパスダクトを設けた例である。
【００３３】
図４に示すように、除湿空調装置１０の構成は図１の除湿空調装置１０と同様であるが、顕熱交換器４２の代わりに除湿剤ロータ４０と同方向に回転しながら顕熱交換を行う顕熱交換ロータ４２Ａと、給気路入口２０の手前に風量を測定する外気風量検出計８４と、給気路入口２０と給気路エアフィルタ３０との間で外気の温湿度を測定する給気路入口温湿度検出計８６と、排気路１４の顕熱交換ロータ４２Ａの回転終端部の下流側と除湿剤ロータ４０の回転終端部の下流側とを直接通風させるための排気路バイパスダクト８０と、排気路バイパスダクト８０の風量を調整する排気路ダンパ８２と、排気路１４の顕熱交換ロータ４２Ａと加熱ヒータ５０との間に温湿度を測定する排気路入口温湿度検出計８８と、前述した３つの検出計と信号ケーブルを介して接続して排気路ダンパ８２の開閉の制御を行う排気路風量コントローラ９０と、が新たに設けられている。そして、排気路バイパスダクト８０において、排気路バイパスダクト入口８０Ａの高さは、排気路１４における顕熱交換ロータ４２Ａの回転方向から１５０〜１８０°の範囲内に設定されている。尚、図１に図示されているモータ４４、外気温湿度検出器４６、運転切り替えコントローラ４８、加熱ヒータ熱媒配管５２、排気路加熱後温度検出計５４、排気路温度コントローラ５６は図示していない。更に、黒色矢印は除湿剤ロータ４０及び顕熱交換ロータ４２Ａの回転する方向を示している。
【００３４】
除湿空調装置１０において、外気風量検出計８４、給気路入口温湿度検出計８６及び排気路入口温湿度検出計８８で検出された値が排気路風量コントローラ９０に送られて、給気路１２と排気路１４との湿分バランスが演算され、排気路１４の風量が最適になるように排気路ダンパ８２の開閉が制御されている。排気路ダンパ８２が開成すると、排気路１４において顕熱交換ロータ４２Ａを通過した排気が排気路バイパスダクト入口８０Ａから排気路バイパスダクト８０を通り、排気路１４における除湿剤ロータ４０の下流に設けられた排気路バイパスダクト出口８０Ｂへとバイパスされる。
【００３５】
次に、上述した本発明第３の実施の形態における除湿空調装置１０の作用について説明する。
【００３６】
図５（Ａ）は、顕熱交換ロータ４２Ａにおける排気路１４の下流面の説明図であり、図５（Ｂ）は、排気路１４における顕熱交換ロータ４２Ａの下流側の表面温度の推移を示すグラフである。図５（Ａ）及び（Ｂ）の斜線部は、排気路１４における顕熱交換ロータ４２Ａの回転方向から１５０〜１８０°の範囲を示している。図５（Ｂ）で示すように、顕熱交換ロータ４２Ａを通過する室内空気は、回転方向終端部へ行くに従い温度が低下しており、特に斜線部の室内空気において通過する室内空気全体の平均温度を下回っていることが分かった。このことから、本願発明者は前記斜線部の室内空気が室内温度全体を低下させて加熱ヒータ５０のエネルギーを浪費する要因となる、という知見を得た。
【００３７】
そこで、低温である斜線部の室内空気は除湿ロータを通過させる必要がないため、前記斜線部の室内空気を除湿剤ロータ４０の下流へ通風させるための排気路バイパスダクト８０を設けることにより、室内空気全体の平均温度を上昇させて、加熱ヒータ５０の更なる省エネを行うことができる。
【００３８】
尚、上述した除湿空調装置１０において、大きさ、形状、数等特に限定するものではない。又、図１〜３で示した顕熱交換器４２は固定式に限定するものではなく、図４〜５で示した回転式の顕熱交換ロータ４２Ａを使用してもよい。更に、給気路ファン３２及び排気路ファン３６は、除湿空調装置１０の外部に設けてもよい。
【００３９】
【発明の効果】
以上説明したように、本発明に係る除湿空調装置において、外気の環境の変化に応じて運転モードを変更したり風量を調整したりすることにより、従来の除湿空調能力を維持しながら大幅な省エネを行うことができる。これにより、除湿空調にかかる設備コスト及びランニングコストを大幅に削減することができる。
【図面の簡単な説明】
【図１】本発明第１の実施の形態である除湿空調装置の全体構成を示す斜視図
【図２】本発明第１の実施の形態である除湿空調装置の全体構成を示す断面図
【図３】発明第２の実施の形態である除湿空調装置の全体構成を示す断面図
【図４】本発明第３の実施の形態である除湿空調装置の全体構成を示す斜視図
【図５】本発明第３の実施の形態である除湿空調装置における、顕熱交換ロータの排気路下流面の説明図及び前記顕熱交換ロータの排気路下流面の表面温度の推移を示すグラフ
【図６】従来例である乾式の除湿空調装置の全体構成を示す断面図
【符号の説明】
１０…除湿空調装置、１２…給気路、１４…排気路、１６…仕切板、２０…給気路入口、２２…給気路出口、２４…排気路入口、２６…排気路出口、３０…給気路エアフィルタ、３２…給気路ファン、３４…排気路エアフィルタ、３６…排気路ファン、４０…除湿剤ロータ、４２…顕熱交換器、４２Ａ…顕熱交換ロータ、４４…モータ、４６…外気温湿度検出器、４８…運転切り替えコントローラ、５０…加熱ヒータ、５２…加熱ヒータ熱媒配管、５４…排気路加熱後温度検出計、５６…排気路温度コントローラ、５８…バルブ、６０…給気路加熱ヒータ、６２…給気路加熱ヒータ熱媒配管、６４…給気路温湿度検出計、６６…給気路温湿度コントローラ、６８…給気路熱媒流量制御装置、７０…加湿器、７２…除湿剤ロータバイパスダクト、７４…除湿剤ロータダンパ、７６…顕熱交換器バイパスダクト、７８…顕熱交換器ダンパ、８０…排気路バイパスダクト、８０Ａ…排気路バイパスダクト入口、８０Ｂ…排気路バイパスダクト出口、８２…排気路ダンパ、８４…外気風量検出計、８６…給気路入口温湿度検出計、８８…排気路入口温湿度検出計、９０…排気路風量コントローラ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a dehumidifying air conditioner, and more particularly to a dry dehumidifying air conditioner.
[0002]
[Prior art]
When air-conditioning a space that requires low humidity, building equipment that needs to take in outside air or clean room equipment that takes in large amounts of outside air, etc., removes moisture by dew condensation, especially in the summer months when the outside air humidity increases. A large load is applied to the cooling coil to be used. As an air conditioner of an energy saving type that reduces the load of the cooling coil, a dehumidifier rotor filled with a dehumidifier is provided between an air supply passage and an exhaust passage as disclosed in Patent Documents 1 and 2, for example. There is a dry dehumidification type dehumidifying air-conditioning apparatus which rotates in a dehumidifying manner, performs dehumidification of outside air in an air supply passage, and regenerates dehumidification ability in an exhaust passage.
[0003]
FIG. 6 is a cross-sectional view showing a general configuration of a conventional dry-type dehumidifying air conditioner 10.
[0004]
In the summertime when the humidity of the outside air is high, the outside air taken into the air supply passage 12 from the air supply passage inlet 20 by the air supply passage fan 32 passes through the air supply passage air filter 30, passes through the dehumidifier rotor 40, and is discharged from the outside air. Is absorbed by the dehumidifier in the dehumidifier rotor 40. The adsorption heat generated at that time is cooled by the sensible heat exchange of the sensible heat exchanger 42, and is supplied into the room from the air supply passage outlet 22 as air supply. On the other hand, the room air taken into the exhaust path 14 from the exhaust path inlet 24 by the exhaust path fan 36 is heated by the sensible heat exchange of the sensible heat exchanger 42 through the exhaust path air filter 34, and further heated by the heater 50. To pass through the dehumidifier rotor 40. During the passage, the dehumidifier is regenerated by removing the moisture adsorbed from the outside air in the air supply passage 12 by the heated room air, and at the same time, the room air is cooled by the generated heat of vaporization and exhausted from the exhaust passage outlet 26.
[0005]
In addition, in the case of the winter season and the middle season (spring and autumn) when the temperature and humidity of the outside air are low, the outside air taken in from the air supply passage inlet 20 and subjected to dehumidification processing and sensible heat exchange is provided at the air supply passage outlet 22. The temperature and humidity of the humidifier 70 were adjusted to a predetermined value by controlling the amount of heating of the air supply path heater 60 and the amount of humidification of the humidifier 70 by the air supply path temperature and humidity controller 66 based on the value of the air supply path temperature and humidity detector 64. Air is supplied from the air supply path outlet 22 to the room as air supply.
[0006]
[Patent Document 1]
JP-A-11-325510
[Patent Document 1]
JP 2000-291979 A
[Problems to be solved by the invention]
However, in the conventional dehumidifying air conditioner 10, the air supply path heater 60 and the humidifier 70 are required for adjusting the temperature and humidity of the outside air in winter, and even if the energy is saved by the dehumidifier rotor 40, it is satisfactory in winter. There is a disadvantage that it does not save energy as much as possible.
[0009]
Furthermore, in the case of the conventional dehumidifying air conditioner 10, the heating air in the exhaust passage 14 used for the regeneration of the dehumidifier uses only about 30% of the heating energy generated by the heater 50 in the exhaust passage 14. However, the exhaust gas is exhausted to the outside of the room at a high temperature at the exhaust passage outlet 26, and there is a problem that sufficient energy saving is not achieved in this regard.
[0010]
The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a dehumidifying air conditioner having excellent energy saving properties throughout the year irrespective of summer, middle, and winter.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the first aspect of the present invention is a dehumidifier that rotates between an air supply path for supplying outside air to a room and an exhaust path for exhausting room air to fill the inside. A dehumidifier rotor in which the agent comes into contact with the outside air in the air supply path and comes into contact with the room air in the exhaust path, and is provided astride between the air supply path and the exhaust path. A sensible heat exchanger for exchanging sensible heat between outside air and room air in the exhaust passage, and a sensible heat exchanger that is provided between the dehumidifier rotor and the sensible heat exchanger in the exhaust passage and exchanges heat with the sensible heat exchanger. A heating heater for heating the room air to a regeneration temperature for regenerating the dehumidifier of the dehumidifier rotor, a variable means for varying a rotation speed of the dehumidifier rotor, and a temperature and humidity of the outside air. And an outside temperature and humidity detector for detecting the By said variable means based on the result, characterized in that a control means for controlling the rotational speed of the dehumidification agent rotor.
[0012]
According to the first aspect of the present invention, the control unit controls the variable unit based on the temperature and humidity of the outside air, so that the rotation speed of the dehumidifier rotor can be changed. Thus, by rotating the dehumidifier rotor at a low speed, the dehumidifier rotor is used as a dehumidifier as in the conventional dehumidifying air conditioner, and conversely, by rotating the dehumidifier rotor at a high speed, the dehumidifier rotor is dehumidified. As well as as a so-called total heat exchanger. This total heat exchanger exchanges not only sensible heat but also moisture in air, that is, latent heat. Therefore, when the humidity of the outside air is low such as in winter or the middle season, and it is not necessary to dehumidify the outside air with the dehumidifier rotor in view of the temperature and humidity of the air-conditioned air supplied to the room, the dehumidifier rotor is subjected to total heat exchange. When used as a vessel, the sensible heat and latent heat of the air heated by the sensible heat exchanger and the heater in the exhaust path can be used for heating and humidifying the outside air flowing through the air supply path. Accordingly, in the present invention, the air supply path heater and the humidifier shown in FIG. 6 are not required, so that significant energy saving can be performed.
[0013]
In the case of the present invention, in addition to varying the rotation speed of the dehumidifier rotor based on the temperature and humidity of the outside air, if the temperature of the heater in the exhaust path is controlled, the temperature and humidity of the outside air in the supply path can be adjusted. And energy savings.
[0014]
According to a second aspect of the present invention, in the first aspect, the control means includes a dehumidifying operation mode and a dehumidifying operation mode in which the dehumidifier rotor needs to dehumidify the outside air based on a measurement result of the outside air measured by the outside temperature and humidity detector. Controls the switching to two modes of the unnecessary total heat exchange operation mode, and when the mode is switched to the dehumidification operation mode, the dehumidifier rotor rotates at a low speed at 10 to 30 rpm, and when the mode is switched to the total heat exchange operation mode, 500 It is characterized in that it rotates at a high speed of 1500 rpm.
[0015]
Claim 2 of the present invention shows an example of control by the control means. The control means needs to dehumidify the outside air with the dehumidifier rotor based on the measurement result of the outside air measured by the outside temperature and humidity detector. The control is switched to two modes, a dehumidification operation mode (summer season) and a total heat exchange operation mode in which dehumidification is not required (winter and intermediate periods). In the dehumidifying operation mode, the dehumidifier rotor rotates at a low speed of 10 to 30 rph and is used as a dehumidifier. In addition, in the total heat exchange operation mode, the dehumidifier rotor rotates at a high speed of 500 to 1500 rpm and is used as a total heat exchanger.
[0016]
According to a third aspect of the present invention, in the first or second aspect, the air supply passage includes a sensible heat exchanger bypass duct connecting an upstream side and a downstream side of the sensible heat exchanger and / or an upstream side of the dehumidifier rotor. A dehumidifier rotor bypass duct connecting the side and the downstream side is formed, and each bypass duct is provided with a damper for adjusting an amount of air to be bypassed.
[0017]
Depending on the temperature and humidity of the outside air, it may be possible to obtain a desired temperature and humidity to supply air to the room without passing the entire amount of outside air taken into the air supply passage through the dehumidifier rotor or the sensible heat exchanger. In such a case, passing the whole amount of outside air causes a pressure loss in the dehumidifier rotor and the sensible heat exchanger. Therefore, if the dehumidifier rotor bypass duct is formed as in the present invention, if the humidity of the outside air is low and the dehumidifying ability of the dehumidifier rotor may be small, the damper opening of the dehumidifier rotor bypass duct is adjusted. In addition, a part of the outside air can be passed through the dehumidifier rotor bypass duct, and the pressure loss can be reduced. The same applies to the case of a sensible heat exchanger bypass duct. As a result, the load on the fan or the like that takes in outside air into the air supply path is reduced, and energy is saved.
[0018]
A fourth aspect of the present invention is the rotor type sensible heat exchange rotor according to any one of the first to third aspects, wherein the sensible heat exchanger rotates across the air supply path and the exhaust path. In the exhaust path, an exhaust path bypass duct that connects the downstream side of the sensible heat exchange rotor and the downstream side of the dehumidifier rotor is provided, and a damper that adjusts an air volume to be bypassed to the bypass duct is provided. The indoor air passing through the rotation direction end portion of the sensible heat exchanger flows through the bypass duct.
[0019]
In the case of a rotor-type sensible heat exchanger, the present inventors have found that the room air that has passed through the end of the sensible heat exchanger in the exhaust path in the exhaust path has a lower temperature than the room air that has passed through other portions, and Has been found to be a factor in lowering the temperature of indoor air that reaches the maximum temperature. Also, when the temperature of the outside air is low as in winter, the total heat exchange is performed even in the dehumidifier rotor. Therefore, if the indoor air is passed through the heater, the heating by the heater becomes necessary, which is a problem in terms of energy saving. There is. Therefore, in the present invention, an exhaust passage bypass duct connecting the downstream side of the sensible heat exchange rotor and the downstream side of the dehumidifier rotor is provided, and a damper for adjusting the amount of air to be bypassed to the bypass duct is provided. Since the room air that has passed through the terminal in the rotation direction of the vessel is not supplied to the heater, energy saving of the heater can be performed. Further, even if the room air flowing through the bypass duct is exhausted as it is, there is no problem because the temperature is low.
[0020]
A fifth aspect of the present invention is characterized in that, in the fourth aspect, the terminal in the rotational direction of the sensible heat exchanger is located at 150 to 180 ° as viewed from the rotational direction of the sensible heat exchanger. This specifically shows a preferable position of the terminal end in the rotation direction in the sensible heat exchanger, and it is preferable that the room air in this angle range be bypassed to the bypass duct.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of a dehumidifying air conditioner according to the present invention will be described in detail with reference to the accompanying drawings.
[0022]
FIGS. 1 and 2 are a perspective view and a sectional view, respectively, showing the entire configuration of a first embodiment of a dehumidifying air-conditioning apparatus according to the present invention, in which a variable means, an outside temperature and humidity detector, and a control means are provided. It is. Note that the same devices and members as those in FIG.
[0023]
As shown in these drawings, the main configuration of the dehumidifying air conditioner 10 is the same as that of the dehumidifying air conditioner 10 shown in FIG. An external temperature and humidity detector 46 that monitors the temperature and humidity of the outside air taken in between, a motor 44 that is variable means for enabling the dehumidifier rotor 40 to perform variable-speed rotation, and an operation of the dehumidifier rotor 40 that is control means. An operation switching controller 48 for controlling the operation is provided, and the operation switching controller 48 is connected to the outside temperature / humidity detector 46, the motor 44, and the exhaust path temperature controller 56 via a signal cable. Then, the air supply path heater 60, the air supply path heater heating medium pipe 62, the air supply path temperature / humidity detector 64, the air supply path temperature / humidity controller provided in the conventional dehumidifying air conditioner 10 shown in FIG. 66, the air supply path heat medium flow control device 68 has been eliminated. The white arrows indicate the direction in which air supply or exhaust flows, and the black dotted arrow indicates the direction in which information such as a detected value or a control signal is sent.
[0024]
Next, the operation of the dehumidifying air conditioner 10 according to the first embodiment of the present invention will be described.
[0025]
In summer when the temperature and humidity of the outside air are high, the operation switching controller 48 automatically switches the operation to the dehumidification operation mode based on the detection value of the outside temperature and humidity detector 46, and rotates the dehumidifier rotor 40 at a low speed of 10 to 30 rph. At the same time, by controlling the opening and closing of the valve 58 of the heater 50 via the exhaust path temperature controller 56, the temperature of the heater is adjusted. Then, the external air taken in from the air supply path inlet 20 by the air supply path fan 32 passes through the air supply path air filter 30 and passes through the dehumidifier rotor 40, thereby removing moisture contained in the external air into the dehumidifier rotor 40. Adsorb with dehumidifier. The outside air that has been dehumidified is heated by the heat of adsorption generated at the time of adsorption, is cooled by exchanging sensible heat in the sensible heat exchanger 42, and is supplied into the room from the air supply passage outlet 22. On the other hand, the room air taken into the exhaust path 14 by the exhaust path fan 36 is heated by exchanging sensible heat in the sensible heat exchanger 42 through the exhaust path inlet 24 and the exhaust path air filter 34, and is heated by the heater 50. At this time, the dehumidifier rotor 40 is heated to a temperature necessary for removing moisture, and passes through the dehumidifier rotor 40. Since the dehumidifier rotor 40 is rotating, the dehumidifier in the dehumidifier rotor 40 circulates through the air supply passage 12 and the exhaust passage 14, and is supplied by the room air heated in the exhaust passage 14. In, the moisture adsorbed on the dehumidifier is removed, and the dehumidifier is regenerated. The indoor air is cooled by the heat of vaporization generated at that time and discharged from the exhaust passage outlet 26 to the outside of the room.
[0026]
In winter and the middle period (spring and autumn) when the temperature and humidity of the outside air are low, the operation switching controller 48 automatically switches the operation to the total heat exchange operation mode based on the detection value of the outside temperature / humidity detector 46 to dehumidify. The temperature of the heater 50 is adjusted by controlling the opening and closing of a valve 58 of the heater 50 via an exhaust path temperature controller 56 that rotates the agent rotor 40 at a high speed of 500 to 1500 rpm. Then, the outside air taken in from the air supply path inlet 20 by the air supply path fan 32 is supplied to the dehumidifier rotor 40 through the air supply path air filter 30. In the rotating dehumidifier rotor 40, sensible heat is exchanged with room air temperature-controlled by the heater 50 provided in the exhaust path 14, and sensible heat is exchanged in the sensible heat exchanger 42. It is further heated, and the outside air undergoes total heat exchange. The outside air heated by the total heat exchange is supplied from the air supply passage outlet 22 to the room as air supply. On the other hand, the room air taken into the exhaust passage 14 by the exhaust passage fan 36 is cooled by exchanging sensible heat in the sensible heat exchanger 42 through the exhaust passage inlet 24 through the exhaust passage air filter 34. Then, by performing total heat exchange with the outside air taken into the air supply passage 12 by the rotating dehumidifier rotor 40, the room air is cooled and exhausted from the exhaust passage outlet 26 to the outside.
[0027]
In the operation of the dehumidifying air-conditioning apparatus 10, in the total heat exchange operation mode, the humidity of the outside air is lower than in the dehumidifying operation mode that is the normal dehumidifying air-conditioning operation. Therefore, there is no need to heat the room air after the ventilation of the sensible heat exchanger 42. On the other hand, since the temperature of the outside air taken into the air supply passage 12 is low and the temperature of the room air taken into the exhaust passage 14 is high, sensible heat exchange from the exhaust passage 14 to the air supply passage 12 is required. Therefore, the regeneration heater 50 is stopped, the dehumidifier rotor 40 is rotated at a high speed, and the dehumidifier rotor 40 and the sensible heat exchanger 42 perform total heat exchange, so that the indoor air and the air supply 12, heat exchange with the outside air can be performed efficiently, and significant energy saving can be performed.
[0028]
FIG. 3 is a cross-sectional view showing the entire configuration of the dehumidifying air conditioner 10 according to the second embodiment of the present invention, in which two bypass ducts are provided in the air supply passage 12.
[0029]
As shown in FIG. 3, the main configuration of the dehumidifying air conditioner 10 is the same as that of the dehumidifying air conditioner 10 of FIG. 2, but in the air supply path 12, the upstream and downstream sides of the dehumidifier rotor 40 are directly ventilated. A dehumidifier rotor bypass duct 72, a dehumidifier rotor damper 74 for adjusting the air volume of the dehumidifier rotor bypass duct 72, a sensible heat exchanger bypass duct 76 for directly ventilating the upstream and downstream sides of the sensible heat exchanger 42, A sensible heat exchanger damper 78 for adjusting the air volume of the heat exchanger bypass duct 76 is provided. Note that the dehumidifier rotor damper 74 and the sensible heat exchanger damper 78 are connected to the operation switching controller 48 via a signal cable, and the outside air temperature / humidity detector 46 provided upstream of the dehumidifier rotor 40 in the air supply passage 12. By controlling the closing and opening of the dampers 74 and 78 from the operation switching controller 48 on the basis of the detected value of, the air flow passing through the bypasses 72 and 76 is adjusted.
[0030]
Next, the operation of the dehumidifying air conditioner 10 according to the second embodiment of the present invention will be described.
[0031]
Depending on the temperature and humidity of the outside air, it is desirable that all of the outside air taken into the air supply passage 12 be passed through the dehumidifier rotor 40 and the sensible heat exchanger 42 to be taken into the room without performing the dehumidification process and the sensible heat exchange. Temperature and humidity in some cases. Even in such a case, if all of the outside air is allowed to pass, a load may be applied to the dehumidifier rotor 40 and the sensible heat exchanger 42 to cause a pressure loss. Therefore, by automatically opening and closing the dehumidifier rotor damper 74 and / or the sensible heat exchanger damper 78 controlled by the operation switching controller 48 based on the value of the outside temperature and humidity detector 46, a part of the outside air is The amount of outside air flowing to the dehumidifier rotor bypass duct 72 and / or the sensible heat exchanger bypass duct 76 and passing through the dehumidifier rotor 40 and / or the sensible heat exchanger 42 can be adjusted. As a result, the load on the air supply path fan 32 and the like can be minimized, and further energy saving can be achieved.
[0032]
FIG. 4 is a perspective view showing the entire configuration of the third embodiment of the dehumidifying air conditioner 10 of the present invention, and is an example in which a bypass duct is provided in the exhaust path 14.
[0033]
As shown in FIG. 4, the configuration of the dehumidifying air-conditioning apparatus 10 is the same as that of the dehumidifying air-conditioning apparatus 10 of FIG. 1, but performs sensible heat exchange while rotating in the same direction as the dehumidifier rotor 40 instead of the sensible heat exchanger 42. The sensible heat exchange rotor 42 </ b> A to be performed, an outside air flow rate detector 84 that measures the air flow just before the air supply passage inlet 20, and the temperature and humidity of the outside air between the air supply passage inlet 20 and the air supply air filter 30 are measured. An air-supply-path inlet temperature / humidity detector 86 and an exhaust-path bypass duct for directly ventilating the exhaust path 14 downstream of the rotation end of the sensible heat exchange rotor 42A and the rotation end of the dehumidifier rotor 40. 80, an exhaust path damper 82 for adjusting the air volume of the exhaust path bypass duct 80, an exhaust path inlet temperature / humidity detector 88 for measuring the temperature and humidity between the sensible heat exchange rotor 42A of the exhaust path 14 and the heater 50, , The three detectors and signals described above An exhaust passage air flow rate controller 90 for controlling the opening and closing of the exhaust passage damper 82 connected through the Buru, are newly provided. In the exhaust path bypass duct 80, the height of the exhaust path bypass duct entrance 80A is set within a range of 150 to 180 degrees from the rotation direction of the sensible heat exchange rotor 42A in the exhaust path 14. It should be noted that the motor 44, the outside air temperature and humidity detector 46, the operation switching controller 48, the heating heater heating medium pipe 52, the exhaust passage heating temperature detector 54, and the exhaust passage temperature controller 56 shown in FIG. 1 are not shown. . Further, black arrows indicate the directions in which the dehumidifier rotor 40 and the sensible heat exchange rotor 42A rotate.
[0034]
In the dehumidifying air conditioner 10, the values detected by the outside air flow rate detector 84, the supply path inlet temperature / humidity detector 86, and the exhaust path inlet temperature / humidity detector 88 are sent to the exhaust path air flow controller 90, and the air supply path 12 The moisture balance between the exhaust gas and the exhaust path 14 is calculated, and the opening and closing of the exhaust path damper 82 is controlled so that the air volume in the exhaust path 14 is optimized. When the exhaust path damper 82 is opened, the exhaust gas that has passed through the sensible heat exchange rotor 42A in the exhaust path 14 is provided downstream of the dehumidifier rotor 40 in the exhaust path 14 through the exhaust path bypass duct 80 from the exhaust path bypass duct entrance 80A. It is bypassed to the exhaust path bypass duct outlet 80B.
[0035]
Next, the operation of the dehumidifying air conditioner 10 according to the third embodiment of the present invention will be described.
[0036]
FIG. 5A is an explanatory diagram of a downstream surface of the exhaust path 14 in the sensible heat exchange rotor 42A, and FIG. 5B is a graph showing a transition of a surface temperature of the exhaust path 14 on the downstream side of the sensible heat exchange rotor 42A. It is a graph shown. 5A and 5B show a range of 150 to 180 ° from the rotation direction of the sensible heat exchange rotor 42A in the exhaust path 14. As shown in FIG. 5 (B), the temperature of the room air passing through the sensible heat exchange rotor 42A decreases as it goes to the terminal end in the rotation direction. It was found that the temperature was below. From this, the inventor of the present application has found that the indoor air in the shaded area lowers the overall indoor temperature and becomes a factor of wasting energy of the heater 50.
[0037]
Therefore, since it is not necessary to pass the low-temperature indoor air in the hatched area through the dehumidifying rotor, the exhaust air bypass duct 80 for passing the indoor air in the hatched area downstream of the dehumidifier rotor 40 is provided. By raising the average temperature of the whole air, further energy saving of the heater 50 can be performed.
[0038]
In the dehumidifying air conditioner 10 described above, the size, shape, number, and the like are not particularly limited. Further, the sensible heat exchanger 42 shown in FIGS. 1 to 3 is not limited to the fixed type, and the rotary sensible heat exchange rotor 42A shown in FIGS. 4 and 5 may be used. Furthermore, the air supply path fan 32 and the exhaust path fan 36 may be provided outside the dehumidifying air conditioner 10.
[0039]
【The invention's effect】
As described above, in the dehumidifying air-conditioning apparatus according to the present invention, by changing the operation mode or adjusting the air volume according to the change in the environment of the outside air, the conventional dehumidifying air-conditioning ability can be significantly reduced while maintaining the conventional dehumidifying air-conditioning capacity. It can be performed. As a result, equipment costs and running costs for dehumidifying air conditioning can be significantly reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing the overall configuration of a dehumidifying air conditioner according to a first embodiment of the present invention; FIG. 2 is a cross-sectional view showing the overall configuration of a dehumidifying air conditioner according to a first embodiment of the present invention; 3 is a cross-sectional view showing the overall configuration of a dehumidifying air conditioner according to a second embodiment of the present invention. FIG. 4 is a perspective view showing the overall configuration of a dehumidifying air conditioner according to a third embodiment of the present invention. FIG. 6 is an explanatory view of a downstream surface of an exhaust passage of a sensible heat exchange rotor and a graph showing a change in surface temperature of a downstream surface of the exhaust passage of the sensible heat exchange rotor in a dehumidifying air conditioner according to a third embodiment of the present invention. Sectional drawing showing the overall configuration of an example of a dry-type dehumidifying air conditioner.
DESCRIPTION OF SYMBOLS 10 ... Dehumidifying air-conditioner, 12 ... Air supply path, 14 ... Exhaust path, 16 ... Partition plate, 20 ... Air supply path entrance, 22 ... Air supply path exit, 24 ... Exhaust path entrance, 26 ... Exhaust path exit, 30 ... Air supply path air filter, 32 air supply path fan, 34 exhaust path air filter, 36 exhaust path fan, 40 dehumidifier rotor, 42 sensible heat exchanger, 42A sensible heat exchange rotor, 44 motor 46: outside temperature and humidity detector, 48: operation switching controller, 50: heating heater, 52: heating medium pipe of heating heater, 54: temperature detector after exhaust passage heating, 56: exhaust passage temperature controller, 58 ... valve, 60 ... Air supply path heater, 62 ... Air supply path heater heating medium pipe, 64 ... Air supply path temperature / humidity detector, 66 ... Air supply path temperature / humidity controller, 68 ... Air supply path heat medium flow control device, 70 ... Humidification , 72 ... Dehumidifier rotor bypass duct 74: dehumidifier rotor damper, 76: sensible heat exchanger bypass duct, 78: sensible heat exchanger damper, 80: exhaust path bypass duct, 80A: exhaust path bypass duct entrance, 80B: exhaust path bypass duct exit, 82: exhaust path Damper, 84: outside air flow rate detector, 86: air supply path inlet temperature / humidity detector, 88: exhaust path inlet temperature / humidity detector, 90: exhaust path air flow controller

Claims (5)

外気を室内に給気する給気路と室内空気を排気する排気路との間に跨がって回転し、内部に充填された除湿剤が前記給気路で外気と接触すると共に前記排気路で室内空気と接触する除湿剤ロータと、前記給気路と前記排気路との間に跨がって設けられ、前記給気路の外気と前記排気路の室内空気との顕熱の交換を行う顕熱交換器と、前記排気路における前記除湿剤ロータと前記顕熱交換器の間に設けられ、顕熱交換器で熱交換された室内空気を前記除湿剤ロータの除湿剤を再生させる再生温度に加熱する加熱ヒータと、を備えた除湿空調装置において、
前記除湿剤ロータの回転速度を可変する可変手段と、
前記外気の温湿度を検出する外気温湿度検出計と、
前記外気温湿度検出計で測定した測定結果に基づいて前記可変手段により前記除湿剤ロータの回転速度を制御する制御手段と、を設けたことを特徴とする除湿空調装置。The dehumidifier, which rotates between an air supply path for supplying outside air into the room and an exhaust path for exhausting indoor air, rotates so that the dehumidifier filled therein comes into contact with outside air in the air supply path and the exhaust path. A dehumidifier rotor that is in contact with the room air, and is provided straddling between the supply path and the exhaust path, and exchanges sensible heat between outside air of the supply path and room air of the exhaust path. A sensible heat exchanger, and regeneration that is provided between the dehumidifier rotor and the sensible heat exchanger in the exhaust path and that regenerates the dehumidifier of the dehumidifier rotor from indoor air that has been heat-exchanged by the sensible heat exchanger. And a heater for heating to a temperature,
Variable means for varying the rotation speed of the dehumidifier rotor,
An outside temperature and humidity detector for detecting the temperature and humidity of the outside air,
A dehumidifying air conditioner comprising: a control unit that controls a rotation speed of the dehumidifier rotor by the variable unit based on a measurement result measured by the outside temperature and humidity detector. 前記制御手段は、前記外気温湿度検出計で測定した外気の測定結果に基づいて、前記除湿剤ロータで外気の除湿が必要な除湿運転モードと除湿が不必要な全熱交換運転モードとの２モードに切り換え制御すると共に、前記除湿運転モードに切り替わると、前記除湿剤ロータが１０〜３０ｒｐｈ で低速回転し、前記全熱交換運転モードに切り替わると５００〜１５００ｒｐｈ で高速回転することを特徴とする請求項１の除湿空調装置。The control means includes a dehumidifying operation mode in which dehumidification of outside air is required by the dehumidifier rotor and a total heat exchange operation mode in which dehumidification is not required, based on a measurement result of outside air measured by the outside temperature and humidity detector. And switching to the dehumidifying operation mode, wherein the dehumidifier rotor rotates at a low speed at 10 to 30 rph, and switches to the total heat exchange operation mode to rotate at a high speed at 500 to 1500 rph. Item 1. A dehumidifying air conditioner according to Item 1. 前記給気路には、前記顕熱交換器の上流側と下流側とを繋ぐ顕熱交換器バイパスダクト及び／又は前記除湿剤ロータの上流側と下流側とを繋ぐ除湿剤ロータバイパスダクトが形成されると共に、各バイパスダクトにはバイパスさせる風量を調整するためのダンパーが設けられていることを特徴とする請求項１又は２の除湿空調装置。A sensible heat exchanger bypass duct connecting the upstream side and the downstream side of the sensible heat exchanger and / or a dehumidifier rotor bypass duct connecting the upstream side and the downstream side of the dehumidifier rotor are formed in the air supply passage. The dehumidifying air conditioner according to claim 1 or 2, wherein each bypass duct is provided with a damper for adjusting an amount of air to be bypassed. 前記顕熱交換器を前記給気路と前記排気路との間に跨がって回転するロータ型の顕熱交換ロータで構成し、前記排気路には、前記顕熱交換ロータの下流側と前記除湿剤ロータの下流側とを繋ぐ排気路バイパスダクトを設けると共に該排気路バイパスダクトにバイパスさせる風量を調整するダンパーを設け、前記顕熱交換器の回転方向終端部を通過する室内空気を前記バイパスダクトに流すようにしたことを特徴とする請求項１〜３の何れか１の除湿空調装置。The sensible heat exchanger is constituted by a rotor-type sensible heat exchange rotor that rotates across the air supply path and the exhaust path, and the exhaust path includes a downstream side of the sensible heat exchange rotor. Providing an exhaust path bypass duct connecting to the downstream side of the dehumidifier rotor and providing a damper for adjusting the amount of air to be bypassed to the exhaust path bypass duct, the indoor air passing through the rotation direction end of the sensible heat exchanger The dehumidifying air conditioner according to any one of claims 1 to 3, wherein the air is passed through a bypass duct. 前記顕熱交換器における回転方向終端部は、顕熱交換器の回転方向から見て１５０〜１８０°の部分であることを特徴とする請求項４の除湿空調装置。The dehumidifying air-conditioning apparatus according to claim 4, wherein the terminal end in the rotation direction of the sensible heat exchanger is a portion at 150 to 180 degrees as viewed from the rotation direction of the sensible heat exchanger.
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