JP4599771B2 - Air conditioner indoor unit - Google Patents

Air conditioner indoor unit Download PDF

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Publication number
JP4599771B2
JP4599771B2 JP2001210331A JP2001210331A JP4599771B2 JP 4599771 B2 JP4599771 B2 JP 4599771B2 JP 2001210331 A JP2001210331 A JP 2001210331A JP 2001210331 A JP2001210331 A JP 2001210331A JP 4599771 B2 JP4599771 B2 JP 4599771B2
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indoor unit
air
pair
heat exchanger
main body
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JP2003021356A (en
JP2003021356A5 (en
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尚史 池田
嘉裕 隅田
宏樹 岡澤
喜則 谷川
勝久 大蔦
彰二 山田
伸治 中島
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は、熱交換器を搭載しプロペラファンを使用した空気調和機に関するものである。
【０００２】
【従来の技術】
図２８は、従来の貫流ファンを搭載した空気調和機の室内機の一例を示し、図２８は従来の貫流ファンを搭載した空気調和機の縦断面図を示す。図において、空気調和機の室内機の本体１は背面側に位置するハウジング１４と吸込グリル７を有するパネル１５とで筐体を構成され、ハウジング１４とパネル１５で吹出口４が形成されている。本体１は室内の壁面に引っ掛けられ固定される。図において、２は熱交換器、３は熱交換器２で空気が凝縮され生成される凝縮水を受けるドレンパン、１６は空気調和機の室内機の本体１に吸い込まれる部屋中のホコリを取り除くフィルタである。１７は貫流ファンの羽根車、１８は貫流ファンの羽根車からの吹出流を吹出口へ導くスクロールケーシング、１９はノーズ部である。
【０００３】
また、図２９〜図３１は、別の従来の空気調和機の室内機の一例を示し、例えば特開平５−２７２７７３号公報の空気調和機の室内機を示す。図２９は、従来の発明の一実施例における空気調和機の室内機の斜視図、図３０は図２９の横断面図、図３１は図２９の縦正面断面図を示す。図において、空気調和機の室内機の本体１の前部に吸込グリル７を、下部、上部に吹出口４ａ、４ｂを有し、部屋の壁１００に据付られている。空気調和機の室内機の本体１の内部には、プロペラファン８と前記プロペラファン８の回転軸線に対し垂直に交差するように、吸込グリル７、平板状の熱交換器２が配設され、さらに空気調和機の室内機の本体の背面壁１ａにはファンモータ６が取り付けられ、前記プロペラファン８を回転駆動する。また熱交換器２の下部には、冷房時における熱交換器２の凝縮水を受けるドレンパン３が配設され、空気調和機の室内機の本体１の吸込側風路と吹出側風路を隔絶する仕切板１０と、前記プロペラファン８のベルマウス１１と一体に形成されている。また９は空気調和機の室内機の本体１の背面壁１ａとプロペラファン８の間にファンモータ６を覆うように配設された円錐状風路部材である。このような空気調和機の室内機において、ファンモータ６を駆動し、プロペラファン８が回転駆動されると、吸込グリル７から空気が吸い込まれ、熱交換器２を通過し、暖房、冷房等された後、上下吹出口４ｂ、４ａから風向変更ベーン５により、吹出風向を変更されつつ吹出される。このとき、前記円錐状風路部材９により、無理なく径方向に風の流れを変更できるため、性能の悪化を招くことなく、上下に風を吹出すことが可能となり、ユニットの静音化等の空力性能の向上が得られるというものである。
【０００４】
【発明が解決しようとする課題】
図２８で説明した従来の貫流ファンを搭載した空気調和機の室内機において、一般的に知られている内容は次の通りである。貫流ファンの場合はほとんどの流線が吸込側と吹出側で羽根車１７を２回通過するが、流れが軸対称でなく、圧力上昇に寄与する羽根車１７の領域が限られており、性能は高くない。すなわち、個々の羽根の入口と出口は回転に伴って吸込側と吹出側に交互に交替し、すべての流線に対し最適な流動条件を備えにくく、しかも循環流２０の発生により、動力が増加するため、効率向上が望めない。他のファン（プロペラファン、遠心ファン）に比べ、効率が低い。そのため、必要な風量を送風するための動力が大きくなり消費電力が大きい。
【０００５】
すなわち、図３２の風量Ｑ[m3/min]に対する静圧Ｐｓ[Ｐａ]の関係を示した図において、フィルタ１６においてホコリ堆積なし時の動作点Ｄに対し、ホコリが堆積した時の動作点Ｅにおける貫流ファン、プロペラファンの風量Ｑ変化量△Ｑｃ、△Ｑｐのように、△Ｑｃ＞△Ｑｐとなり、貫流ファンの方がプロペラファンに対し、抵抗が付加された場合の特性悪化が大きく、不安定な挙動を示す。そのため、吹出口より貫流ファンへ風が逆流し、冷房時の場合貫流ファンに着露し、吹出口から水滴が飛散してしまい床を汚してしまい信頼性が低いといわれている。
【０００６】
従来のプロペラファンを搭載した空気調和機の室内機において、図３０、３１のようにプロペラファン８が１個につきファンモータ６が１個のため、コストが高くついてしまう。また、ファンモータ６の個体差により、同じ形状のプロペラファン８であっても回転数が微妙に変化してしまい、図３３のように、狭帯域に回転音のピークが若干ずれて１本ではなく２本になるため、ウワンウワンとうなり音が発生してしまい聴感が非常に悪くなってしまい耳障りで品質が悪い。
【０００７】
そして、空気調和機の室内機の本体１の上部に上部吹出口４bがあると、部屋の天井面１０１に風が当たり、部屋のホコリが吹き付けられ天井面１０１が汚れてしまう恐れがある。そのため、空気調和機の室内機の本体１を設置する際、天井面１０１から離す必要が発生し、据付可能物件が減少してしまう。
【０００８】
さらに、熱交換器２が平板状のため、面積増加のため熱交換器２の横幅を増加した場合、プロペラファン８、ファンモータ６のさらなる追加が必要となり、コストが大幅に増加してしまう。また熱交換器２の高さ方向を増加する場合、空気調和機の室内機の本体１の高さが拡大してしまい、空気調和機の室内機の本体１の据付必要寸法が拡大し据付可能物件が減少してしまう。また、図３４のプロペラファンの風速分布を示した図のように、吸込風速は破線で示すように略半円形の等速度分布となっているが、本従来例では熱交換器２がプロペラファン８の正面のみしか無く、プロペラファン８の側部からの流入が有効に使われず消費電力を小さく出来なかった。更にプロペラファンを使用した技術は特開平９−４８６７号公報の如く多く知られているが、いずれも消費電力が大きく、且つ形態的に特殊なため用途が限られる構造で実用的でないという問題があった。
【０００９】
本発明は上述のような欠点を解消するためになされたもので、空気調和機の効率を大幅に向上させる構造を得ることを目的とする。空気調和機の本体寸法を抑えつつ、コストの大幅増加を抑制し、ファンの動力を低減し消費電力を下げることを目的とする。更に省エネルギータイプで、聴感が良く、音の静かな空気調和機を得ることを目的とする。更に通風抵抗の変化にも運転が安定し、高品質、高信頼性で、空調範囲の広い空気調和機を得ることを目的とする。更に消費電力が少なく、且つどのような場所にもフレキシブルに対応できる使い易い空気調和機を得ることを目的とする。更に簡単に各種の空気の品質を改善する品質改善装置を設けられる実用的な装置を得ることを目的とする。
【００１０】
【課題を解決するための手段】
請求項１に係る発明の空気調和機の室内機は、室内の壁に据え付けられる壁掛け構造の室内機本体と、この室内機本体の横方向の両端部付近に所定の間隔をあけて相対して配置されるとともに、一方は正回転方向の形状、他方が逆回転方向の形状を有して、同一の回転方向に回転して、吸い込んだ室内空気をそれぞれ室内機本体の側面方向へ吹き出す一組のプロペラファンと、一組のプロペラファンのそれぞれの外周を含んでプロペラファンの吸い込み側を覆うように一組のプロペラファンに下方を除いて跨って配設され、一組のプロペラファンが吸い込んだ室内空気を冷したり暖めたりする熱交換器と、熱交換器の内周側空間で、一組のプロペラファンの間に配置され、横方向両方にシャフトが延びて一組のプロペラファンをそれぞれ同一の回転方向に回転させる両軸タイプのファンモータと、室内機本体の両端部にそれぞれ位置し、室内機本体の正面から下面にかけて縦方向に細長く開口し、熱交換器で冷やされたり暖められたりして熱交換器の内周側の空間を通ってプロペラファンから吹き出された室内空気を室内に吹き出す一組の吹出口と、室内機本体の両端部に設けられ、一組の吹出口のそれぞれへ向かう吹出側風路を形成して、プロペラファンから吹き出された室内空気を吹出口へ集めるスクロールケーシングと、一組の吹出口の間で室内機本体の正面と上面とに設けられ、熱交換器を通過させるための室内空気を吸い込む吸込口と、一組の吹出口の間で吹出口よりも奥側の位置にて室内機本体の下面に設けられ、室内機本体の下部から熱交換器を通過させるための室内空気を吸い込む下部吸込口と、を備えたものである。
【００１１】
請求項２に係る発明の空気調和機の室内機は、室内の壁に据え付けられる壁掛け構造の室内機本体と、この室内機本体の横方向の両端部付近に所定の間隔をあけて相対して配置されるとともに、一方は正回転方向の形状、他方が逆回転方向の形状を有して、同一の回転方向に回転して、吸い込んだ室内空気をそれぞれ室内機本体の側面方向へ吹き出す一組のプロペラファンと、一組のプロペラファンのそれぞれの外周を含んでプロペラファンの吸い込み側を覆うように一組のプロペラファンに下方を除いて跨って配設され、一組のプロペラファンが吸い込んだ室内空気を冷したり暖めたりする熱交換器と、熱交換器の内周側空間で、一組のプロペラファンの間に配置され、横方向両方にシャフトが延びて一組のプロペラファンをそれぞれ同一の回転方向に回転させる両軸タイプのファンモータと、室内機本体の両端部にそれぞれ位置し、室内機本体の正面から下面にかけて縦方向に細長く開口し、熱交換器で冷やされたり暖められたりして熱交換器の内周側の空間を通ってプロペラファンから吹き出された室内空気を室内に吹き出す一組の吹出口と、室内機本体の両端部に設けられ、一組の吹出口のそれぞれへ向かう吹出側風路を形成して、プロペラファンから吹き出された室内空気を吹出口へ集めるスクロールケーシングと、一組の吹出口の間で室内機本体の正面と上面とに設けられ、熱交換器を通過させるための室内空気を吸い込む吸込口と、一組の吹出口の間で吹出口よりも奥側の位置にて室内機本体の下面に設けられ、室内機本体の下部から熱交換器を通過させるための室内空気を吸い込む下部吸込口と、を備え、一組の吹出口のそれぞれが、室内機本体の正面に設けられた吸込口よりも正面方向に突出しているものである。
【００１２】
請求項３に係る発明の空気調和機の室内機は、室内機本体が横方向に複数連結されているものである。
【００２４】
【発明の実施の形態】
実施の形態１．
以下、本発明に係る空気調和機を図面をもとに詳細に説明する。図１は、本発明に係る空気調和機の斜視図、図２は図１の空気調和機の水平断面図、図３は図２のＸ−Ｘにおける縦断面図、図４は図２のＹ−Ｙにおける縦断面図である。
【００２５】
図１において、１は空気調和機の本体であり、７は吸込グリル、４は空気調和機の本体１の両端部に位置し、空気調和機の本体１の上面部１ｃ、側面部１ｂ、背面部１ａ以外の正面から下面に開口する細長い吹出口、５ａ、５ｂは吹出口４から吹き出される風を左右、上下に風向を変更する左右ベーン、上下ベーンを示す。図１において中央の吸い込みグリル７から室内の空気を吸い込み本体１内で空調した空気を両端部の吹出口４から室内へ噴出す構造で室内の壁に両端部を水平にした横向きの構造として空調機の室内機として使用する。
【００２６】
図２、図３、図４において、プロペラファン８は、空気調和機本体１の両端部付近に相対して二つ配置され、中央付近に設けたファンモータ６から両方に延びたシャフト６ａにより固定され、シャフト６ａの両端部にはベアリング６ｂが配置され、なめらかに回動可能となっている。そのため、相対する一組のプロペラファン８の形状は正逆回転方向になっている。また、２は相対する２つのプロペラファン８一組の吸込側のほぼ全体を覆い、かつ両方のプロペラファンの間を繋ぐ形で配設された熱交換器、１１はプロペラファン８の吸込側風路１２と吹出側風路を仕切り、プロペラファン８の圧力を上昇させるためのリング状のベルマウス、３は熱交換器２で凝縮し生成されたドレン水を受けるドレンパン、ドレンパン３の下部には、ファンモータ６への電源や室外機からの信号を送受信するためなどの電子基板２１、１６は部屋の浮遊するホコリを除去するためのフィルタ、７ａは空気調和機の室内機の本体下部から空気を吸い込むための下部吸込グリル、１６ａは下部吸込グリルから流入する空気のホコリを除去するフィルタ、９は円錐台状部材で、プロペラファン８から吹き出された軸方向の流れをプロペラファンの回転軸線方向から垂直な方向である径方向へ風向変更させるものであり、プロペラファン８から所定距離間隔を開けた吹出側風路１３内に配置されている。さらに１２は、プロペラファン８から吹き出された流れを吹出し側風路内で集める吹出し側スクロールケーシングである。
【００２７】
熱伝達管５５を有する熱交換器２は後で説明する冷凍サイクルの圧縮機などを内蔵する室外機と配管が接続されフロンや水あるいは自然冷媒などの冷媒が循環しており、この熱交換器などを収納する空気調和機の室内機の本体１は部屋の壁１００に据え付けられている。また熱交換器は本体前面のグリルから吸いこまれる空気を通す部分２ａと２ｂ、正面と上面のグリルからの空気を通す部分２ｃ、上面のグリルからの空気を通す部分２ｄと２ｅ、下面のグリル７ａからの空気を通す部分２ｆがそれぞれ折れ曲がる形で結合されて円弧状に形成されている。但し本体下部のドレンパンが存在する一部は熱交換器を設けていない。熱交換器の各折れ曲がる位置には空気の流れがバイパスされるのを防ぐバイパス抑制材２３を設けている。またモーター６の下部には本体１にてモーター６を支持し固定するモーターサポート５１が設けられている。また図示はしないがドレンパン３と本体１の下面の間の空間に電子基板２１以外に手動スイッチなどの電気部品が設けられると共に、本体下面の一部を開閉して操作できるようにしてある。同様に図示はしないが本体下面の外部には運転表示のランプなど表示装置が設けられている。
【００２８】
このような空気調和機の室内機において、ファンモータ６が駆動すると、両プロペラファン８が回転軸中心Ｏを中心に回転方向Ａ方向に回転し、部屋の空気は本体１のほぼ全周に設けた吸込グリル７および下部吸込グリル７ａから吸い込まれ、一円の熱交換器２で冷房、暖房、除湿された後、矢印Ｂのように熱交換器全周から軸方向に本体１の中央側から端部側に流れ熱交換器２の内周側空間を通り、プロペラファン８へ吸い込まれる。その後プロペラファン８から本体１の端部側に吹き出され、矢印Ｃのように、円錐台状部材９でプロペラファン８の径方向へ風向変更され、プロペラファン８から直接吹出口４から本体１の外部である室内に吹き出されたり、スクロールケーシング１２で集められた後吹出口４から室内に吹き出される。このとき、左右ベーン５ａ、上下ベーン５ｂにより、吹出し風向が変更されつつ吹き出され室内が冷房などに空調される。
【００２９】
モーター６は熱交換器２の内周側空間に固定され両端に配置されたプロペラファンを同時に共通の回転方向に駆動しており、本体１の軸方向長さに対し無駄なスペースにならずコンパクトに構成を纏めることが出来る。また図１ないし図４に示すように吸込口４を設けた本体１の端部には背面部１ｂ、上面部１ｃには背面壁１ａのように壁面を設け吹出口４の開口はほぼ水平方向であるＣの一方向から空調された空気を吐出させるようにして室内の遠くの部分まで届くようにしている。この吹出口４は壁掛けの室内機の場合縦方向に長く取って且つ吸い込みグリル７より小さな面積で吹出されるので高い風速が得やすく広範囲な空調を可能にしている。
【００３０】
図５は空気調和機の特性を説明する図で、本発明の空気調和機のように、図２８における貫流ファンを搭載した空気調和機の室内機と異なり、高効率なプロペラファンを搭載しているので、図５の風量Ｑ[m3/min]に対する軸出力ζ[W]（＝ファン角速度×トルク）の関係のように、全風量帯で軸出力が低い。つまり、ファンを駆動するファンモータ入力が低くでき、効率を向上させることが出来る。また、図２９−３１の従来の空気調和機の室内機と異なり、熱交換器２がプロペラファン８の吸い込み側正面のみではなく、相対するプロペラファン８が二つ、間隔をもち配置され、熱交換器がプロペラファン８の側面にも配置し、かつほぼプロペラファン外周の全周を覆うように配設されているため、プロペラファン８の正面および側面のほぼ全周から吸込可能となるため、吸込領域が有効に使用できプロペラファンの効率を一層上げることが出来る。更に一円の熱交換器の外周全周から室内空気を吸いこむので熱交換器面積を増やすことが出来、熱伝達性能を著しく上げられ、空調機の効率などの性能を更に良くすることが出来る。
【００３１】
また、熱交換性能がさらに必要で、熱交換器面積を増やす必要とする場合の一例として、図６の斜視図、図７の図６の水平断面図を示す。これらのように、図１、２などで説明した相対するプロペラファン一組での本体１のユニットを二つ軸方向に接続して合体させた形態にし、熱交換器２、吸込グリル７、ファンモータ６が２組、吹出口が合計４つ配設している。空気の流れは基本的に、前述した相対するプロペラファン一組とそれぞれ同じであるので、同一の符号を付して省略する。このように、熱交換性能により、さらに本体１を図７の両方の中央の吹出し側スクロールケーシング風路を仕切る仕切り壁の所でボルト接続して合体させた形態や、相対するプロペラファン一組で熱交換器の横幅を増加する場合等寸法を替えるなど多様な組み合わせが可能である。更に本体１の吹出し部を有する両端側と吸い込み部を有する中央側を分離して異なる寸法、例えば軸方向長さを替える組合せにし端部側と中央側の仕切り壁でボルト組立する、あるいは中央側を２分割３分割して対応した熱交換器と組合せるなどの用途や能力に応じたフレキシブルな使い方が出来る便利な空調機の構造が得られる。以上は円弧上の熱交換器の一円の径を一定にし軸方向、すなわち相対するファン間の寸法方向を変える構造であるが熱交換器の径方向や奥行き寸法を替える形態に変化させても良い。
【００３２】
図８、図９は、本発明に係る空気調和機のプロペラファンの形状を示す図で、図１に相当する空気調和機の室内機に搭載される相対するプロペラファン８の一組の一例を示し、ファンモータ６から見たときの正面図である。例えば、図８は羽根枚数３枚のプロペラファン８、図９は羽根枚数４枚のプロペラファンを示している。なおファン外径は左右で同一とする。プロペラファン８以外の構成については、前述した図１〜４、及び図６、７の空気調和機の室内機と同様である。
【００３３】
このように、相対するプロペラファン一組のファン形状を変更することにより、形状や合成など羽根の構造により発生する振動音のピーク等特性が異なり、この回転数差を大きくすることにより、従来の空気調和機の室内機で起こるうなり音が解消でき、聴感がよく静粛な空気調和機の室内機を得ることができる。
【００３４】
図１０、図１１は本発明に係る空気調和機の室内機の斜視図、および水平断面図で空気調和機の室内機の別の形状を示す。なお、図１０、１１における開閉プレート２２、側部吹出口４ｃ以外の主な構成については、前述した図面の構造と同様であるため、同一の符号を付して説明を省略する。２２は開口４Ｃを開閉する着脱自在の開閉プレート、５１は本体下部に固定されモーターを支持するモーターサポート、５４はモーターサポートに着脱可能に取り付けられたカセット容器で除臭剤または芳香剤が熱交換器内周側の空間を流れる空気中に除放可能に設けてある。もちろんこのカセット容器の中に超音波振動により空気中に水分子を含ませる加湿装置を設けても良い。このように空調される空気の流れの中に化学分子や化学物質を添加して空気の品質を一層改善することが出来る。加湿器の場合水タンクはドレンパン３の下部空間に配置しポンプでカセット容器に供給することになる。なおカセット容器の代わりにモーターサポート５１に高電圧を印可して除塵を行う空気清浄器やマイナスイオン発生装置を取り付け熱交換器の内周側空気に物理的に作用し空調する空気の品質を更に改善することが出来る。このように熱交換器の内周側空間はモーターを取り付けた場合でも空気が流れる広いスペースが存在するし、もしモーターを端部側にプロペラファン個々に設ければ熱交換器内周の空間がそのままつかえる形となり更に大きな装置を取り付けることが出来る。これらのカセット容器や空気清浄器などの装置の固定は下部の熱交換器を設けていないスペースを利用し、ドレンパンを一部切欠いて直接本体１の下部にモーターサポートのような支持体を設けて固定すれば良い。
【００３５】
図１０、図１１において、空気調和機の室内機の本体１の両側面部１ｂには、プロペラファン８から吹き出された流れが、本体１の側面方向にも吹出し可能なように側部吹出口４ｃが形成されている。この側部吹出口４ｃは空気調和機の本体１の据付スペースの位置関係より、側面へ吹き出せない場合、側部吹出口４ｃをふさぐため、取り外し、取付可能な開閉プレート２２が設置されている。
【００３６】
図１１の空気調和機の室内機の本体１の左側開閉プレートを取り外した場合のように、プロペラファン８からの吹出し流れは、側部吹出口４ｃおよび正面から下部へ延びた吹出口４から吹き出されるので、空調範囲を拡大することができる。その結果、部屋の広範囲な空間で、快適な環境を創造できる。また空調機を設置する場所の制約に対応可能な構造を選択できる。また図１２のように、前述の図６、図７で示した相対するプロペラファン８が二組の場合でも同様に、空調範囲が拡大でき、快適な環境を創造できる。
【００３７】
図１３、図１４は、本発明に係る空気調和機の室内機の別の形状を示し、前述の図１、図４に相当する。なお主な構成は前述の空気調和機の室内機と同様のため、同一符号を付して説明を省略する。
【００３８】
図１３、図１４のように吹出口４が空気調和機の室内機の本体１の正面から下面にかけて細長い形状であるので、図２８の従来の貫流ファンを搭載した空気調和機の室内機で、冷房時、人に冷風が当たらないように上下ベーン５ｂにより上方向に吹出し風向を変更すると、上下ベーン５ｂにより吹出口４をふさぎ気味になるため通風抵抗が大きくなり、騒音悪化してしまうようなことがない。図１５は部屋が同一冷房環境での風向変更ベーン角度変化時における風量と騒音を説明する図であって、吹出口の通風抵抗が最小時になるときの風向変更ベーン角度時における騒音との差△ＳＰＬ[dBA]を風量Ｑ[m3/min]を変更していった場合について示した図である。図１５のように、従来構造と本発明の構造では高風量側へ行くほど差が大きくなっていくことがわかる。以上のように、吹出口４が空気調和機の室内機の本体１の正面から下面にかけて長い形状であるので、空調された空気の風向変更時における騒音悪化量が小さく、低騒音な空気調和機の室内機を得ることができる。
【００３９】
図１６は、本発明に係る空気調和機の室内機の別の形状を示す図で、図３に相当する図である。なお、主要な構成は、前述した図１〜図４と同様であるため、同一の符号を付して説明を省略する。熱交換器２は湾曲した円弧状の形態である。ドレンパン３はドレン水を受ける３ａ、３ｂ部分とこの両方に分離したドレンパン３ａ、３ｂを接続する樋部分３ｃに区分けされている。ドレンパン３ａ、３ｂの水受け部の底面は３ａが３ｂより高くドレン水は樋部３ｃを通して３ｂに集められるようになっている。５１はモーターサポート、５２は本体取り付け部、５３は埋め込まれた表示部を示す。図１６の構造で本体１下面部分は本体前方の吸い込みグリル７と嵌めこまれて接続する部分がファン中心線の取り付け部５２部分まで取り付け部５２の接続ネジを外して取り除ける。更にこの部分はドレンパン３ａと電子基板２１などのスイッチ類や表示部５３が一体になっており、取り付け部５２の接続ネジを外し嵌めこまれたグリル７側から嵌め込み部を引き離すことにより熱交換器内周側が開放される。これにより一体となったモーター制御装置など電気品類の点検修理が簡単に行える。
【００４０】
図１６に示すように、本発明に係る空気調和機の室内機に配設される熱交換器２は、プロペラファン８の外周にほぼ均一に任意距離Ｓ離れた位置に円弧状に湾曲している。このような熱交換器２の形態にすることにより、プロペラファン８が空気を吸い込むとき、図３のような多段に折り曲げられた熱交換器２を配設された時に比べ、熱交換器２と背面壁１ａの距離ｔが大きくでき通風抵抗が低減できるとともに、さらに吸込風速分布が均一傾向になるため、偏流が抑制され低騒音化が図れる。更に熱交換器各部の風速をほぼ均一に出来るので熱伝達性能を向上させることが出来る。また、多段折り曲げのように折り曲げ部の隙間に空気のバイパスを抑制するためにバイパス抑制部材２３も減り、作業工数が低減できる。またファンの形状に合わせた距離Ｓを選択することによりファン効率を一層向上できる。更にドレンパン３ａと本体１の下面を一体にした取り外し部分を除き熱交換器内周面を開放できるのでこの開放部分から掃除機のホースを入れて掃除することが出来、清潔な空調機が得られる。更に図１１で説明したように空気の品質を改善するカセット容器５４や空気清浄器のような装置器具を熱交換器内周部空間に固定していてもこの開放された部分から着脱や点検、取替えなどを行うことが出来る。特に軸方向に細長いカセット容器などはこの開放部分から簡単にはずしたり付けたりすることが出来る。これにより装置の点検や除放剤の寿命管理も容易に行うことが可能である。なおドレンパンを３ａ３ｂに区分けすることによりその間に樋３ｃ以外にはドレンパンが存在しない領域を設けることが出来るので、上記のように本体１の下面の大きな部分を開放せずとも、ドレンパンの存在しない領域だけの本体に開放可能な蓋を設ければその蓋に直接固定するなど本体に取り付けたカセット容器を着脱でき、更に容易にカセット容器の中身の入れ替えを行えるようになる。なお直接空気の品質を改善するカセット容器や加湿器とともに殺菌用紫外線ランプや殺菌用発光素子を設けることにより空調機内部の殺菌やカビ対策も可能になり空調される空気の品質を間接的に改善できる。
【００４１】
図１７に、多段折り曲げ形態の熱交換器２とプロペラファン８と熱交換器が距離Ｓで等距離の円弧形態であるときにおける騒音特性比較図を示す。図１７のように、本発明の円弧形態の熱交換器の方が、同一風量時2dBA低騒音である。
【００４２】
図１８、図１９は本発明に係る空気調和機の室内機の別の形状を示す図で、図７に相当する図である。なお、この図におけるファンモータ６をカバーする円錐台状部材９以外の構成は、前述した図と同様であるため、同一の符号を付して説明を省略する。
【００４３】
図１８は相対するプロペラファン８が二組の場合の空気調和機の室内機の一例における水平断面図、図１９は相対するプロペラファン８が二組の場合の空気調和機の室内機の別の例における水平断面図を示す。図１８において、相対するプロペラファン８が二組の合計４つのプロペラファン８を有し、それらを連結して駆動するファンモータ６は一方向へシャフト６ａが延びる片軸タイプの場合を示し、空気調和機の室内機の本体１の一番端部のプロペラファン８と対向する円錐台状部材９の内部に収納され、前記ファンモータ６から延びたシャフト６ａにより、全てのプロペラファン８を連結されている。このときシャフト６ａが長尺で、微少な軸心ブレ等の振動によるプロペラファン８から放射される騒音抑制のため、端部から２つ目と３つ目のプロペラファン８の間をゴムジョイント２４で連結して連動させている。
【００４４】
図１９は、相対するプロペラファン８が二組の合計４つのプロペラファン８を有し、それらを駆動するファンモータ６は両方にシャフト６ａが延びる両軸タイプの場合を示し、空気調和機の室内機の本体１の中央付近のプロペラファン８と対向する円錐台状部材９の内部に収納され、前記ファンモータ６から延びたシャフト６ａにより、全てのプロペラファン８を連結されている。
【００４５】
このように、多枚数のプロペラファン８を一つのファンモータ６で回転駆動することにより、多数個用いるときに比べコストを抑制できる。更に本体ユニット、すなわち１組のファンに対応する吸込口と吹出口、を複数自由にモーターの能力を上げて変更でき使いやすい構造が得られる。
【００４６】
図２０〜図２３は、本発明に係る空気調和機の室内機の別の形状を示し、主な構成は前述の図１〜図４に相当する。
【００４７】
図２０〜図２３において、４つの吹出口４は、空気調和機の室内機本体１の正面部１ｄの吸込グリル７に対し、正面方向に突出した形状である。本体ユニット、すなわち１組のファンに対応する吸込口と吹出口、のうちの端部側である吹出し部の形状を別の形状のものに図１などから取り替えたもので外観上のアクセントが得られるだけでなくショートサーキットに対する効果も得られる。更にこのように形成することにより、左右ベーン５ａおよび上下ベーン５ｂの設置スペースが拡大し、プロペラファン８から上下ベーン５ｂまでの距離Ｒが全体的に拡大し、プロペラファン８の吹出流と上下ベーン５ｂとの干渉がなくなり、通風抵抗の低減が図れる。これによりファン効率を更に上げることが出来る。
【００４８】
図２４は、吹出口４が空気調和機の室内機本体１の正面部１ｄの吸込グリル７に対し、正面方向に突出した場合と突出しない場合における風量Ｑ[m3/min]と騒音値ＳＰＬ[dBA]の関係を示した図である。図２４のように吹出口４を突出し、上下ベーン５ｂをプロペラファン８から離すことにより、通風抵抗が低減し低騒音化が図れるため、静粛な空気調和機の室内機を得ることができる。
【００４９】
図２５、図２６は本発明に係る空気調和機の室内機の別の形状を示す図で、図２、３に相当する図である。この図におけるファンモータ６の軸方向の両側に高性能フィルタ２６が設けられている。なお、前述した図と同様な部分は、同一の符号を付して説明を省略する。高性能フィルタ２６はフィルタ１６、１６ａより更に高集塵率なフィルタで熱交換器２とプロペラファン８が近接している領域のみにフィルタを持ち、プロペラファン８の中心付近は穴の形状をしている。もともとプロペラファン８の熱交換器２近傍は、他の領域に比べ、風速が早いのでこのように高集塵率のフィルタを形成することにより、プロペラファン８の熱交換器２の近傍では風速が減少し、プロペラファン８の正面からの流入側の風量が増大する。これにより空気吸い込み分布が均一化傾向になりファンの効率が更に向上する。その上細かいマイクロダストなどを除去でき熱交換器内周側の空間で空気品質を更に改善できる。
【００５０】
図２７は空気調和装置の冷凍サイクルの構成図であり、図において３１は室外ユニット、３２は室外ユニットに収納され冷媒を吐出して四方弁３を介し室内ユニット３８との間を配管内を通して循環させる圧縮機、３４は室外熱交換器、３５は室外ファン、３６は流量制御弁、３９は室内熱交換器、４０は室内ファンである。室内ユニット３８は本体１の構造を有し、室内熱交換器３９である図１の熱交換器２は熱伝達管５５が多数の板状フィンを貫通し熱伝達管５５には冷凍サイクルの配管を通して冷媒が循環している。この冷媒とフィンの間を流れる空気Ｂとの間で熱交換して空気を冷却したり温めたりして空調しており、この冷房、暖房、あるいは除湿の制御を冷凍サイクルが行っている。空調機の室内機３８である本体１はプロペラファンにより効率向上させているが室外ファン３５もプロペラファンを使用しており、本発明の構造、すなわち円弧状の熱交換器等を使用しても良いことは当然である。
【００５１】
熱交換器を除湿に使用する場合は熱交換器を２つに分けてその間を除湿弁で接続する構成となるがこの除湿弁の設置に関しても熱交換器内周側の空間を有効に利用することが出来装置の小型化が可能である。冷房や暖房が可能な空調機を除湿に可能な構成を説明したが、図２７の冷凍サイクルの室内熱交換器３９と室外熱交換器３４を、図３の熱交換器２を分けて活用すればそのまま除湿器とすることも可能である。この場合冷凍サイクルが本体１の中にまとまることになり壁掛け構造ではなく床設置構造で、且つ圧縮機や配管などが円弧状の熱交換器の内周側空間に収まることになる。その場合プロペラファン８は１個すなわち片側で形成しファン軸方向を縦方向にすると熱交換器や圧縮機などの重量物を下から支えることが出来るので都合が良い。熱伝達管５５を流れる冷媒は塩素を含まないフロン冷媒Ｒ４１０ＡやＲ４０７Ｃを使用するが自然冷媒、例えば水、炭化水素や炭酸ガスなどを使用しても良い。図６、７のように本体ユニットを増やす場合にも冷凍サイクルの室外ユニット３１は１台のままで良い。室内ユニット３８に接続する配管を室内など途中で２つに分けて並列に各本体ユニットに接続する。
【００５２】
この発明にかかる空気調和機の室内機は、相対する２つのプロペラファンを少なくとも一組以上有し、前記相対するプロペラファン両方の少なくとも吸込側のほぼ全体を覆い、かつ間に熱交換器が配設されたものである。またこの発明にかかる空気調和機の室内機は、空気調和機両端部に位置するプロペラファンの吹出側の空気調和機の背面側、上面側に壁面を有し、前記空気調和機の背面側、上面側以外が開口した吹出口を有するものである。またこの発明にかかる空気調和機の室内機は、空気調和機両端部に位置するプロペラファンの吹出側の前記プロペラファンの回転軸線に垂直な面と空気調和機背面側、上面に壁面を有し、空気調和機の室内機の正面から下面に開口する細長い吹出口を有するものである。
【００５３】
この発明にかかる空気調和機の室内機は、熱交換器がプロペラファンの外周に沿う略円弧形状であるものである。この発明にかかる空気調和機の室内機は、全てのプロペラファンを一つのファンモータで回転駆動したものである。
【００５４】
以上、説明したとおり、本発明によれば、高効率なプロペラファンを相対して配設し、かつプロペラファンの吸込側のほぼ全体を覆うように熱交換器を配設しているので、プロペラファンの軸出力が低くできるので、ファンモータの低入力化が図れる。その結果省エネな空気調和機の室内機を得ることができる。
また相対するプロペラファンおよび間の熱交換器を複数組み合わせることにより、熱交換性能により多様な構成を形成可能である。
【００５５】
この発明によれば、相対するプロペラファン一組の２つのファンを異なる羽根形状、羽根枚数にすることにより、回転音の発生周波数差を拡大できるので、うなり音が解消できるので、静粛な空気調和機の室内機を得ることができる。
【００５６】
この発明によれば、空気調和機の室内機本体の両側面部に側部吹出口を形成し、さらに取り外し可能な開閉プレートを設置しているので、空気調和機本体を壁から離れた場所に据え付けた場合、開閉プレートを取り外すことにより空調範囲を拡大できることから、部屋の広範囲な空間で快適な環境を創造できる。
【００５７】
この発明によれば、空気調和機の室内機本体の両端部の正面から下面にかけて細長い形状の吹出口を有するので、風向変更時の風向ベーンによる通風抵抗悪化が抑制されるので、低騒音な空気調和機の室内機を得ることができる。
【００５８】
この発明によれば、空気調和機の室内機本体に搭載される熱交換器が、プロペラファンの外周にほぼ均一に任意距離離れた円弧状に湾曲しているので、空気調和機の室内機の背面壁と熱交換器の間隔を拡大でき通風抵抗が減少できるとともに、その他の領域も吸込分布が均一傾向になるため、偏流が抑制され低騒音化でき、静粛な空気調和機の室内機を得ることができる。また熱交換器が多段折り曲げ形態のように、折り曲げ部の隙間に空気のバイパス抑制部材を入れる必要がないため、作業工数が低減できる。
【００５９】
この発明によれば、多枚数のプロペラファンを一つのファンモータで回転駆動するので、多数個用いる時に比べコストを抑制でき、安価な空気調和機の室内機を得ることができる。
【００６０】
【発明の効果】
請求項１に係る発明の空気調和機の室内機は、熱交換器がプロペラファンの外周にも位置しているので、プロペラファンの吸込領域が有効に使用できプロペラファンの効率を上げることができるとともに、室内機本体の正面と上面からだけでなく下部吸込口により室内機本体の下部からも室内空気を吸い込むことで、下方を除く一円の熱交換器の外周全周から室内空気が吸い込まれることとなって熱交換面積が増え、熱伝達性能を上げることができるので、空気調和機の効率を向上させることができる。
【００６１】
請求項２に係る発明の空気調和機の室内機は、熱交換器がプロペラファンの外周にも位置しているので、プロペラファンの吸込領域が有効に使用できプロペラファンの効率を上げることができるとともに、室内機本体の正面と上面からだけでなく下部吸込口により室内機本体の下部からも室内空気を吸い込むことで、下方を除く一円の熱交換器の外周全周から室内空気が吸い込まれることとなって熱交換面積が増え、熱伝達性能を上げることができるので、空気調和機の効率を向上させることができる。さらに、一組の吹出口のそれぞれが、室内機本体の正面に設けられた吸込口よりも正面方向に突出しているので、プロペラファンから上下に風向を変更する上下ベーンまでの距離が拡大し、プロペラファンの吹き出し流と上下ベーンとの干渉がなくなって通風抵抗の低減と低騒音化が図れるとともに、ショートサーキットに対する効果も得られる。
【００６２】
請求項３に係る発明の空気調和機の室内機は、室内機本体を横方向に複数連結するので、空調能力に応じてフレキシブルな使い方ができる。
【図面の簡単な説明】
【図１】 本発明の実施の形態１における空気調和機の室内機の斜視図。
【図２】 本発明の実施の形態１における図１の水平断面図。
【図３】 本発明の実施の形態１における図２のＸ−Ｘにおける縦断面図。
【図４】 本発明の実施の形態１における図２のＹ−Ｙにおける縦断面図。
【図５】 本発明と従来の空気調和機の室内機における風量Ｑ[m3/min]に対する軸出力ζ[W]の関係を示した図。
【図６】 本発明の実施の形態１における空気調和機の室内機の別の一例における斜視図。
【図７】 本発明の実施の形態１における図６の水平断面図。
【図８】 本発明の実施の形態１における空気調和機の室内機に用いられる相対するプロペラファン一組のうちの一つのプロペラファン正面図。
【図９】 本発明の実施の形態１における図８のもう一方のプロペラファンの正面図。
【図１０】 本発明の実施の形態１における空気調和機の室内機の斜視図。
【図１１】 本発明の実施の形態１における図１０の水平断面図。
【図１２】 本発明の実施の形態１における空気調和機の室内機の別の例における斜視図。
【図１３】 本発明の実施の形態１における空気調和機の室内機の斜視図。
【図１４】 本発明の実施の形態１における図１３の図２のＹ−Ｙの縦断面図に相当する図。
【図１５】 本発明と従来の空気調和機の室内機における、通風抵抗が最小時の風向変更ベーン角度と冷房時での風向変更ベーン角度における騒音値差△ＳＰＬを風量Ｑを変更したときの変化を示した図。
【図１６】 本発明の実施の形態１における空気調和機の室内機の図３に相当する縦断面図。
【図１７】 本発明の実施の形態１における多段折り曲げ形態の熱交換器と円弧形態の熱交換器での風量Ｑに対する騒音値の変化を示した比較図。
【図１８】 本発明の実施の形態１における空気調和機の室内機の水平断面図。
【図１９】 本発明の実施の形態１における図１８の空気調和機の室内機におけるファンモータに、両軸タイプを用いた例を示した水平断面図。
【図２０】 本発明の実施の形態１における空気調和機の室内機の斜視図。
【図２１】 本発明の実施の形態１における図２０の水平断面図。
【図２２】 本発明の実施の形態１における図２０のＸ−Ｘにおける縦断面図。
【図２３】 本発明の実施の形態１における図２０のＹ−Ｙにおける縦断面図。
【図２４】 本発明の実施の形態１における吹出口が空気調和機の室内機本体の正面部の吸込グリルに対し正面に突出した場合と突出しない場合における風量Ｑと騒音値ＳＰＬの関係を示した図。
【図２５】 本発明の実施の形態１における空気調和機の水平断面図。
【図２６】 本発明の実施の形態１における図２５の縦断面図。
【図２７】 本発明の実施の形態１における冷凍サイクルの構成説明図。
【図２８】 従来の貫流ファンを搭載した空気調和機の縦断面図。
【図２９】 別の従来の空気調和機の室内機の斜視図。
【図３０】 従来の空気調和機の図２７の横断面図。
【図３１】 従来の空気調和機の図２７の縦正面断面図。
【図３２】 従来の空気調和機に使用する貫流ファン、プロペラファンの風量Ｑに対する静圧Ｐｓの関係を示した図。
【図３３】 従来の空気調和機のうなり音発生時における周波数特性図。
【図３４】 従来の空気調和機のプロペラファンの吸込風速分布を示した概要図。
【符号の説明】
１ 空気調和機本体、 １ａ 背面壁、 １b 背面部、 １c 上面部、 １ｄ 正面部、 ２ 熱交換器、 ３ ドレンパン、 ４ 吹出口、 ４ａ 下部吹出口、 ４ｂ 上部吹出口、 ４c側部吹出口、 ５ 風向変更ベーン、 ５ａ 左右ベーン、 ５ｂ 上下ベーン、 ６ ファンモータ、 ６ａ シャフト、 ７ 吸込グリル、 ７ａ 下部吸込グリル、 ８ プロペラファン、 ９ 円錐台状部材、 １０ 仕切板、 １１ ベルマウス、 １２ 吹出し側スクロールケーシング、 １３ 吹出側風路、 １４ ハウジング、 １５ パネル、 １６ フィルタ、 １６ａ 下部吸込グリル用フィルタ、 １７ 貫流ファンの羽根車、 １７ａ 羽根、 １９ ノーズ部、 ２０ 循環流、 ２１電子基板、 ２２ 開閉プレート、 ２３ バイパス抑制部材、 ２４ ゴムジョイント、 ５１ モーターサポート、 ５２ 本体取り付け部、 ５３ 表示部、 ５４ カセット容器、 ５５ 熱伝達管、 １００ 部屋の壁、 １０１ 部屋の天井面、 Ａ プロペラファンの回転方向、Ｏ 回転軸中心、 Ｓ プロペラファンと熱交換器の間の隙間の距離、 ｔ 空気調和機の室内機本体の背面壁と熱交換器間の距離。[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to an air conditioner equipped with a heat exchanger and using a propeller fan.
[0002]
[Prior art]
  FIG. 28 shows an example of an indoor unit of an air conditioner equipped with a conventional cross-flow fan, and FIG. 28 shows a longitudinal sectional view of the air conditioner equipped with a conventional cross-flow fan. In the figure, a main body 1 of an indoor unit of an air conditioner has a housing constituted by a housing 14 located on the back side and a panel 15 having a suction grill 7, and the housing 14 and the panel 15 form an air outlet 4. . The main body 1 is hooked and fixed on the wall surface in the room. In the figure, 2 is a heat exchanger, 3 is a drain pan that receives condensed water generated by condensation of air in the heat exchanger 2, and 16 is a filter that removes dust in the room sucked into the main body 1 of the indoor unit of the air conditioner. It is. Reference numeral 17 denotes an impeller of a once-through fan, 18 denotes a scroll casing that guides an outlet flow from the impeller of the once-through fan to an outlet, and 19 denotes a nose portion.
[0003]
  FIGS. 29 to 31 show another example of an indoor unit of an air conditioner, for example, an indoor unit of an air conditioner disclosed in JP-A-5-272773. 29 is a perspective view of an indoor unit of an air conditioner according to an embodiment of the conventional invention, FIG. 30 is a transverse sectional view of FIG. 29, and FIG. 31 is a longitudinal front sectional view of FIG. In the figure, a suction grill 7 is provided at the front part of the main body 1 of the indoor unit of the air conditioner, and air outlets 4a and 4b are provided at the lower part and the upper part. Inside the main body 1 of the indoor unit of the air conditioner, a suction grill 7 and a flat plate heat exchanger 2 are disposed so as to intersect the propeller fan 8 and the rotation axis of the propeller fan 8 perpendicularly. Further, a fan motor 6 is attached to the back wall 1a of the main body of the indoor unit of the air conditioner, and the propeller fan 8 is driven to rotate. In addition, a drain pan 3 that receives the condensed water of the heat exchanger 2 during cooling is disposed below the heat exchanger 2, and the suction side air path and the outlet side air path of the main body 1 of the indoor unit of the air conditioner are isolated. The partition plate 10 and the bell mouth 11 of the propeller fan 8 are integrally formed. Reference numeral 9 denotes a conical air passage member disposed so as to cover the fan motor 6 between the back wall 1a of the main body 1 of the air conditioner indoor unit and the propeller fan 8. In such an air conditioner indoor unit, when the fan motor 6 is driven and the propeller fan 8 is driven to rotate, air is sucked from the suction grille 7 and passes through the heat exchanger 2 to be heated and cooled. After that, the air is blown from the upper and lower outlets 4b and 4a while the blowing air direction is changed by the air direction changing vane 5. At this time, the flow of the wind can be changed in the radial direction without difficulty by the conical air passage member 9, so that it is possible to blow the wind up and down without deteriorating the performance. An improvement in aerodynamic performance is obtained.
[0004]
[Problems to be solved by the invention]
  In the indoor unit of an air conditioner equipped with the conventional once-through fan described in FIG. 28, the contents generally known are as follows. In the case of a cross-flow fan, most streamlines pass through the impeller 17 twice on the suction side and the blowout side, but the flow is not axisymmetric and the area of the impeller 17 contributing to the pressure increase is limited. Is not expensive. That is, the inlets and outlets of the individual blades alternately alternate between the suction side and the outlet side as they rotate, and it is difficult to provide optimal flow conditions for all streamlines, and the power increases due to the generation of the circulating flow 20. Therefore, improvement in efficiency cannot be expected. The efficiency is lower than other fans (propeller fan, centrifugal fan). Therefore, the power for blowing the necessary air volume increases and the power consumption is large.
[0005]
  That is, the air volume Q [m in FIG.ThreeIn the graph showing the relationship of the static pressure Ps [Pa] with respect to / min], the air flow rate Q of the cross-flow fan and propeller fan at the operating point E when dust is accumulated in the filter 16 with respect to the operating point D when dust is not accumulated. As in the amounts of change ΔQc and ΔQp, ΔQc> ΔQp, and the cross-flow fan has a larger characteristic deterioration when a resistance is added to the propeller fan, and exhibits unstable behavior. For this reason, it is said that the wind flows backward from the outlet to the once-through fan, and in the case of cooling, it is dewed to the once-through fan, and water droplets are scattered from the outlet and dirty the floor, which is said to have low reliability.
[0006]
  In an indoor unit of an air conditioner equipped with a conventional propeller fan, as shown in FIGS. 30 and 31, one propeller fan 8 and one fan motor 6 are expensive. Further, due to individual differences of the fan motor 6, even with the same shape of the propeller fan 8, the rotational speed slightly changes, and as shown in FIG. Since there are two, there will be a groaning sound and the audibility will be very poor, which is harsh and poor quality.
[0007]
  And if there is an upper outlet 4b at the upper part of the main body 1 of the indoor unit of the air conditioner, there is a possibility that the wind hits the ceiling surface 101 of the room, and dust in the room is blown to make the ceiling surface 101 dirty. Therefore, when installing the main body 1 of the indoor unit of an air conditioner, it is necessary to separate it from the ceiling surface 101, and the number of installable properties decreases.
[0008]
  Furthermore, since the heat exchanger 2 is flat, when the width of the heat exchanger 2 is increased to increase the area, further addition of the propeller fan 8 and the fan motor 6 is required, and the cost is greatly increased. Moreover, when the height direction of the heat exchanger 2 is increased, the height of the main body 1 of the indoor unit of the air conditioner is increased, and the required dimensions of the main body 1 of the indoor unit of the air conditioner are expanded and can be installed. Property will decrease. Further, as shown in the figure showing the wind speed distribution of the propeller fan in FIG. 34, the suction wind speed has a substantially semicircular uniform speed distribution as shown by a broken line, but in this conventional example, the heat exchanger 2 is the propeller fan. There was only the front of No. 8, the inflow from the side of the propeller fan 8 was not used effectively, and the power consumption could not be reduced. Further, many techniques using a propeller fan are known as disclosed in Japanese Patent Application Laid-Open No. 9-4867. However, all of them have a problem that they have a large power consumption and are not practical due to their special form. there were.
[0009]
  The present invention has been made to eliminate the above-described drawbacks, and an object thereof is to obtain a structure that greatly improves the efficiency of an air conditioner. The objective is to reduce the power consumption of the fan by reducing the power of the fan while controlling the main dimensions of the air conditioner and suppressing a significant increase in cost. Furthermore, the purpose is to obtain an air conditioner that is energy-saving, has a good audibility and a quiet sound. Furthermore, the object is to obtain an air conditioner that is stable in operation against changes in ventilation resistance, has high quality and high reliability, and has a wide air conditioning range. It is another object of the present invention to provide an easy-to-use air conditioner that consumes less power and can flexibly handle any place. It is another object of the present invention to obtain a practical device that can be provided with a quality improvement device that easily improves the quality of various air.
[0010]
[Means for Solving the Problems]
  The air conditioner of the invention according to claim 1Indoor unitIsA wall-mounted indoor unit body that is installed on the wall of the room and the indoor unit body are disposed opposite to each other in the vicinity of both ends in the lateral direction of the indoor unit body. It has the shape of the reverse rotation direction, rotates in the same rotation direction, and blows out the sucked room air to the side direction of the indoor unit main body, respectively.onePair ofWith propeller fans,A set ofPropeller fanA pair of propeller fans are arranged so as to cover the suction side of the propeller fan including the respective outer periphery except for the lower part, and the indoor air sucked by the pair of propeller fans is cooled or warmed.Heat exchanger and heat exchangerA double-axis type fan motor that is arranged between a pair of propeller fans in the inner space and extends in both lateral directions to rotate the pair of propeller fans in the same rotational direction, and the indoor unit body From the front side to the bottom side of the indoor unit main body, and is elongated in the vertical direction from the propeller fan through the space on the inner peripheral side of the heat exchanger after being cooled or warmed by the heat exchanger. A pair of air outlets that blow out the indoor air that was blown into the room and both ends of the indoor unit main body, and formed a blow-out side air passage toward each of the pair of air outlets, were blown out from the propeller fan A scroll casing that collects indoor air to the air outlet, and a pair of air inlets that are provided on the front and top surfaces of the indoor unit main body between the pair of air outlets, and that sucks indoor air to pass through the heat exchanger, Blowing Than the air outlet between the mouth provided at the rear side of the position on the lower surface of the indoor unit main body, a lower suction port for sucking indoor air for passing the heat exchanger from the bottom of the indoor unit main bodyAnd equipped withTheIs.
[0011]
  The air conditioner of the invention according to claim 2Indoor unitIsWall-mounted indoor unit installed on an indoor wallBookBody and,The indoor unit main body is disposed in the vicinity of both ends in the lateral direction with a predetermined interval therebetween, and one has a shape in the forward rotation direction and the other has a shape in the reverse rotation direction. And a pair of propeller fans that blow out the sucked room air in the direction of the side of the indoor unit body, and a set of propeller fans so that the suction side of the propeller fan is covered. Arranged across the propeller fan except for the bottom, it cools and warms the indoor air inhaled by a pair of propeller fansHeat exchanger and heat exchangerIn the inner space, between a pair of propeller fansPlaced inDouble-shaft type fan that has a shaft extending in both lateral directions and rotates a pair of propeller fans in the same rotational direction.MoAnd,It is located at both ends of the indoor unit main body, opens vertically in the vertical direction from the front to the bottom of the indoor unit main body, passes through the space on the inner peripheral side of the heat exchanger after being cooled or warmed by the heat exchanger From the propeller fan, a pair of air outlets for blowing indoor air blown out from the propeller fan into the room, and air outlets on both ends of the indoor unit main body are formed toward the air outlets of the pair of air outlets. A scroll casing that collects the blown room air to the air outlet, and a suction port that is provided between the pair of air outlets on the front surface and the upper surface of the indoor unit main body and sucks room air to pass through the heat exchanger; A lower suction port that is provided on the lower surface of the indoor unit main body at a position behind the blower outlet between the pair of blower outlets, and sucks indoor air from the lower part of the indoor unit main body through which the heat exchanger passes;WithEach of the pair of air outlets protrudes in the front direction from the suction port provided in the front of the indoor unit main body.Is.
[0012]
  The air conditioner of the invention according to claim 3Indoor unitIsIndoor unitBodyButLaterallyMultiple connectedIs.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
  Hereinafter, an air conditioner according to the present invention will be described in detail with reference to the drawings. 1 is a perspective view of an air conditioner according to the present invention, FIG. 2 is a horizontal sectional view of the air conditioner of FIG. 1, FIG. 3 is a longitudinal sectional view taken along line XX of FIG. It is a longitudinal cross-sectional view in -Y.
[0025]
  In FIG. 1, 1 is a main body of an air conditioner, 7 is a suction grille, 4 is located at both ends of the main body 1 of the air conditioner, and an upper surface portion 1c, a side surface portion 1b, a rear surface of the main body 1 of the air conditioner. Elongated air outlets 5a and 5b that open from the front surface to the lower surface other than the portion 1a indicate left and right vanes and upper and lower vanes that change the air direction from left and right and up and down. In FIG. 1, air is conditioned by sucking indoor air from a central suction grill 7 and ejecting air conditioned in the main body 1 from the air outlets 4 at both ends into the room. Used as an indoor unit.
[0026]
  2, 3, and 4, two propeller fans 8 are arranged relative to the vicinity of both end portions of the air conditioner body 1, and are fixed by a shaft 6 a extending from the fan motor 6 provided near the center. In addition, bearings 6b are arranged at both ends of the shaft 6a so that the shaft 6a can be smoothly rotated. Therefore, the shape of the pair of propeller fans 8 facing each other is in the forward / reverse rotation direction. Also, 2 is a heat exchanger that covers the entire suction side of a pair of two propeller fans 8 facing each other and is connected to connect both propeller fans, and 11 is a suction side wind of the propeller fan 8. A ring-shaped bell mouth 3 for separating the passage 12 and the blow-out side air passage and increasing the pressure of the propeller fan 8, 3 is a drain pan that receives the drain water condensed and generated by the heat exchanger 2, The electronic boards 21 and 16 for transmitting and receiving signals from the power source and the outdoor unit to the fan motor 6 are filters for removing dust floating in the room, and 7a is air from the lower part of the indoor unit of the air conditioner. The lower suction grill 16 for sucking in air, the filter 16a for removing dust from the air flowing in from the lower suction grill, and the frustum-shaped member 9 in the axial direction blown out from the propeller fan 8 It is intended to change the wind direction from the direction of the rotation axis of the propeller fan in the radial direction is perpendicular, are arranged from the propeller fan 8 at a predetermined distance interval within the blowing side air passage 13 opened. Further, 12 is a blow-out side scroll casing that collects the flow blown out from the propeller fan 8 in the blow-out side air passage.
[0027]
  The heat exchanger 2 having the heat transfer pipe 55 is connected to an outdoor unit containing a compressor of a refrigeration cycle, which will be described later, and a pipe, and refrigerant such as chlorofluorocarbon, water, or natural refrigerant circulates. The main body 1 of the indoor unit of the air conditioner that stores the above is installed on the wall 100 of the room. Further, the heat exchanger has portions 2a and 2b through which air sucked from the front grill is passed, portions 2c through which air from the front and top grills passes, portions 2d and 2e through which air from the top grill passes, and a bottom grill 7a. The portions 2f through which the air passes are joined in a bent shape and formed into an arc shape. However, the heat exchanger is not provided in a part where the drain pan at the lower part of the main body exists. A bypass suppressing member 23 for preventing the air flow from being bypassed is provided at each bent position of the heat exchanger. A motor support 51 for supporting and fixing the motor 6 by the main body 1 is provided below the motor 6. Although not shown, an electrical component such as a manual switch is provided in addition to the electronic board 21 in a space between the drain pan 3 and the lower surface of the main body 1 and can be operated by opening and closing a part of the lower surface of the main body. Similarly, although not shown, a display device such as an operation display lamp is provided outside the lower surface of the main body.
[0028]
  In such an air conditioner indoor unit, when the fan motor 6 is driven, both propeller fans 8 rotate in the direction of rotation A about the rotation axis center O, and room air is provided almost all around the body 1. The air is sucked from the suction grill 7 and the lower suction grill 7a, and is cooled, heated and dehumidified by the heat exchanger 2 of one circle, and then from the center side of the main body 1 in the axial direction from the entire circumference of the heat exchanger as indicated by an arrow B. It flows to the end side, passes through the inner space of the heat exchanger 2, and is sucked into the propeller fan 8. Thereafter, the air is blown from the propeller fan 8 toward the end of the main body 1, and the air direction is changed in the radial direction of the propeller fan 8 by the truncated cone-shaped member 9 as indicated by an arrow C. It blows out into the room which is the outside, or is blown out into the room from the rear outlet 4 collected by the scroll casing 12. At this time, the left and right vanes 5a and the upper and lower vanes 5b blow out while changing the blowing air direction, and the room is air-conditioned such as cooling.
[0029]
  The motor 6 is fixed in the inner space of the heat exchanger 2 and simultaneously drives the propeller fans arranged at both ends in a common rotation direction, and is compact without wasting space relative to the axial length of the main body 1. The configuration can be summarized. Further, as shown in FIGS. 1 to 4, a wall surface such as a back surface 1b is provided at the end of the main body 1 provided with the suction port 4 and a back wall 1a is provided at the top surface 1c so that the opening of the air outlet 4 is substantially horizontal. The air conditioned from one direction C is discharged so as to reach a far part in the room. In the case of a wall-mounted indoor unit, the air outlet 4 is long in the vertical direction and blows out in a smaller area than the suction grille 7, so that a high wind speed can be easily obtained and a wide range of air conditioning is possible.
[0030]
  FIG. 5 is a diagram for explaining the characteristics of the air conditioner. Unlike the air conditioner indoor unit in which the cross-flow fan in FIG. 28 is mounted, like the air conditioner of the present invention, a highly efficient propeller fan is mounted. Therefore, the air volume Q [m in FIG.ThreeAs shown in the relationship of shaft output ζ [W] (= fan angular velocity × torque) to / min], the shaft output is low in the entire air volume range. That is, the fan motor input for driving the fan can be lowered, and the efficiency can be improved. Also, unlike the indoor unit of the conventional air conditioner of FIGS. 29-31, the heat exchanger 2 is not only the front side of the suction side of the propeller fan 8, but two opposing propeller fans 8 are arranged with a gap between them. Since the exchanger is arranged also on the side surface of the propeller fan 8 and is disposed so as to cover the entire circumference of the outer periphery of the propeller fan, the suction can be performed from almost the entire circumference of the front surface and the side surface of the propeller fan 8. The suction area can be used effectively and the efficiency of the propeller fan can be further increased. Furthermore, since the room air is sucked from the entire circumference of the one-round heat exchanger, the area of the heat exchanger can be increased, the heat transfer performance can be significantly increased, and the efficiency of the air conditioner can be further improved. .
[0031]
  In addition, as an example in the case where heat exchange performance is further required and the heat exchanger area needs to be increased, a perspective view of FIG. 6 and a horizontal sectional view of FIG. 6 of FIG. 7 are shown. As described above, the units of the main body 1 in the pair of opposing propeller fans described in FIGS. 1 and 2 are connected in the axial direction and combined to form the heat exchanger 2, the suction grille 7, and the fan. Two sets of motors 6 and a total of four outlets are arranged. Since the air flow is basically the same as each of the above-described pair of propeller fans, the same reference numerals are given and omitted. As described above, the heat exchange performance further allows the main body 1 to be combined by bolting at the partition wall partitioning the air outlet side scroll casing air passages in the center of FIG. 7 or a pair of opposing propeller fans. Various combinations are possible, such as changing the dimensions when increasing the width of the heat exchanger. Further, both ends having the blow-out portion of the main body 1 and the central side having the suction portion are separated to have different dimensions, for example, a combination in which the length in the axial direction is changed, and the bolts are assembled with the partition walls on the end side and the central side, or the central side A convenient air-conditioner structure that can be used flexibly according to the application and capacity, such as combining the heat exchanger with the corresponding heat exchanger divided into two parts and three parts, is obtained. The above is a structure in which the diameter of one circle of the heat exchanger on the arc is made constant, and the axial direction, that is, the dimensional direction between the opposing fans is changed. However, even if the radial direction and depth dimension of the heat exchanger are changed good.
[0032]
  8 and 9 are views showing the shape of the propeller fan of the air conditioner according to the present invention, and an example of a set of opposing propeller fans 8 mounted on the indoor unit of the air conditioner corresponding to FIG. It is shown and it is a front view when it sees from the fan motor 6. FIG. For example, FIG. 8 shows a propeller fan 8 with three blades, and FIG. 9 shows a propeller fan with four blades. The fan outer diameter is the same on the left and right. The configuration other than the propeller fan 8 is the same as that of the indoor unit of the air conditioner of FIGS. 1 to 4 and FIGS.
[0033]
  In this way, by changing the fan shape of a pair of opposing propeller fans, the characteristics such as the peak of vibration sound generated by the blade structure such as shape and composition are different, and by increasing this rotational speed difference, An air conditioner indoor unit can be obtained which can eliminate the beat sound generated in the indoor unit of the air conditioner and is quiet and quiet.
[0034]
  10 and 11 are a perspective view and a horizontal sectional view of an indoor unit of an air conditioner according to the present invention, and show another shape of the indoor unit of the air conditioner. 10 and 11, the main configuration other than the opening / closing plate 22 and the side air outlet 4c is the same as the structure of the drawings described above, and therefore, the same reference numerals are given and description thereof is omitted. 22 is a detachable opening / closing plate that opens and closes the opening 4C, 51 is a motor support that is fixed to the lower part of the main body and supports the motor, and 54 is a cassette container that is detachably attached to the motor support. It is provided in a releasable manner in the air flowing through the space on the inner peripheral side of the vessel. Of course, a humidifying device that includes water molecules in the air by ultrasonic vibration may be provided in the cassette container. Thus, the quality of the air can be further improved by adding chemical molecules or chemical substances to the air flow to be conditioned. In the case of a humidifier, the water tank is disposed in the lower space of the drain pan 3 and is supplied to the cassette container by a pump. In addition, an air purifier or negative ion generator that removes dust by applying a high voltage to the motor support 51 instead of the cassette container is installed to further improve the quality of air to be air-conditioned by physically acting on the inner air of the heat exchanger. It can be improved. In this way, the inner space on the inner side of the heat exchanger has a large space through which air flows even when the motor is installed.If the motor is installed on the end side of each propeller fan, the inner space on the inner side of the heat exchanger is increased. It can be used as it is, and a larger device can be attached. These cassette containers, air purifiers, and other devices are fixed using a space where no lower heat exchanger is provided, and a drain pan is partially cut out and a support body such as a motor support is provided directly under the main body 1. Fix it.
[0035]
  10 and 11, the side air outlet 4 c is provided so that the flow blown from the propeller fan 8 can be blown also to the side surface direction of the main body 1 on both side surface parts 1 b of the main body 1 of the indoor unit of the air conditioner. Is formed. When the side air outlet 4c cannot be blown out to the side surface due to the positional relationship of the installation space of the main body 1 of the air conditioner, an openable / closable plate 22 that can be removed and attached is installed to close the side air outlet 4c. .
[0036]
  As in the case where the left opening / closing plate of the main body 1 of the indoor unit of the air conditioner of FIG. 11 is removed, the blowout flow from the propeller fan 8 blows out from the side blowout port 4c and the blowout port 4 extending from the front to the bottom. Therefore, the air conditioning range can be expanded. As a result, a comfortable environment can be created in a wide space of the room. In addition, it is possible to select a structure that can cope with restrictions on the place where the air conditioner is installed. In addition, as shown in FIG. 12, even when there are two sets of opposing propeller fans 8 shown in FIGS. 6 and 7, the air-conditioning range can be expanded and a comfortable environment can be created.
[0037]
  FIGS. 13 and 14 show other shapes of the indoor unit of the air conditioner according to the present invention, and correspond to FIGS. 1 and 4 described above. In addition, since the main structure is the same as that of the indoor unit of the above-mentioned air conditioner, the same code | symbol is attached | subjected and description is abbreviate | omitted.
[0038]
  As shown in FIGS. 13 and 14, the air outlet 4 has an elongated shape extending from the front to the bottom of the main body 1 of the air conditioner indoor unit. Therefore, in the air conditioner indoor unit equipped with the conventional cross-flow fan of FIG. When the air flow direction is changed upward by the upper and lower vanes 5b so that cold air does not hit a person during cooling, the upper and lower vanes 5b tend to block the air outlet 4, so the ventilation resistance increases and the noise worsens. There is nothing. FIG. 15 is a diagram for explaining the air volume and noise when the air direction change vane angle is changed in the same cooling environment in the room, and the difference between the noise at the air direction change vane angle when the ventilation resistance of the air outlet becomes the minimum Δ SPL [dBA] is air volume Q [mThreeFIG. 6 is a diagram showing a case where [/ min] is changed. As shown in FIG. 15, it can be seen that the difference between the conventional structure and the structure of the present invention increases as the air flow increases. As described above, the air outlet 4 has a long shape extending from the front to the bottom of the main body 1 of the indoor unit of the air conditioner. Therefore, the amount of noise deterioration when changing the direction of the air-conditioned air is small, and the air conditioner is low in noise. Can be obtained.
[0039]
  FIG. 16 is a diagram illustrating another shape of the indoor unit of the air conditioner according to the present invention, and corresponds to FIG. 3. In addition, since the main structures are the same as that of FIGS. 1-4 mentioned above, the same code | symbol is attached | subjected and description is abbreviate | omitted. The heat exchanger 2 has a curved arc shape. The drain pan 3 is divided into 3a and 3b portions that receive drain water and a flange portion 3c that connects the drain pans 3a and 3b separated into both. The bottom surfaces of the water receiving portions of the drain pans 3a and 3b have 3a higher than 3b, and the drain water is collected in 3b through the flange 3c. Reference numeral 51 denotes a motor support, 52 denotes a main body attaching portion, and 53 denotes an embedded display portion. In the structure of FIG. 16, the lower surface portion of the main body 1 can be removed by removing the connecting screw of the mounting portion 52 up to the mounting portion 52 portion of the fan center line where the portion connected to the suction grille 7 in front of the main body is connected. Further, in this portion, the drain pan 3a, the switches such as the electronic substrate 21, and the display portion 53 are integrated, and the heat exchanger is removed by removing the fitting screw and removing the fitting portion from the fitted grille 7 side. The inner circumference is opened. This makes it easy to inspect and repair electrical equipment such as an integrated motor controller.
[0040]
  As shown in FIG. 16, the heat exchanger 2 disposed in the indoor unit of the air conditioner according to the present invention is curved in a circular arc shape at a position that is separated from the propeller fan 8 at an arbitrary distance S almost uniformly. Yes. By adopting such a heat exchanger 2 configuration, when the propeller fan 8 sucks air, the heat exchanger 2 and the heat exchanger 2 bent in multiple stages as shown in FIG. The distance t of the back wall 1a can be increased, the ventilation resistance can be reduced, and the suction wind speed distribution tends to be uniform, so that drift is suppressed and noise can be reduced. Furthermore, since the wind speed of each part of the heat exchanger can be made almost uniform, the heat transfer performance can be improved. Further, in order to suppress air bypass in the gap between the bent portions as in multi-stage bending, the bypass suppressing member 23 is also reduced, and the number of work steps can be reduced. Further, the fan efficiency can be further improved by selecting the distance S according to the shape of the fan. Further, since the inner peripheral surface of the heat exchanger can be opened except for the removal part in which the drain pan 3a and the lower surface of the main body 1 are integrated, the hose of the vacuum cleaner can be put in and cleaned from this open part, and a clean air conditioner can be obtained. . Further, as described with reference to FIG. 11, even if a device such as a cassette container 54 or an air purifier for improving the air quality is fixed to the inner space of the heat exchanger, it can be detached and inspected from the opened portion. Can be replaced. In particular, a cassette container that is elongated in the axial direction can be easily removed or attached from this open portion. This makes it possible to easily check the device and manage the life of the release agent. In addition, by dividing the drain pan into 3a3b, it is possible to provide an area where there is no drain pan other than the ridge 3c. Therefore, an area where the drain pan does not exist without opening a large portion of the lower surface of the main body 1 as described above. If an openable lid is provided only on the main body, the cassette container attached to the main body can be attached and detached by fixing directly to the lid, and the contents of the cassette container can be replaced more easily. In addition, by installing a UV lamp for sterilization and a light emitting element for sterilization together with a cassette container and a humidifier that directly improve the air quality, it is possible to sterilize the inside of the air conditioner and prevent mold, and indirectly improve the quality of air-conditioned air it can.
[0041]
  FIG. 17 is a noise characteristic comparison diagram when the heat exchanger 2, the propeller fan 8, and the heat exchanger in the multi-stage bending form are in the form of an arc with an equal distance of S. As shown in FIG. 17, the arc-shaped heat exchanger of the present invention has a low noise of 2dBA at the same air volume.
[0042]
  18 and 19 are views showing other shapes of the indoor unit of the air conditioner according to the present invention, and are views corresponding to FIG. In addition, since structures other than the truncated cone-shaped member 9 that covers the fan motor 6 in this figure are the same as those in the above-described figure, the same reference numerals are given and description thereof is omitted.
[0043]
  FIG. 18 is a horizontal sectional view of an example of an air conditioner indoor unit when there are two sets of opposing propeller fans 8. FIG. 19 is another example of the air conditioner indoor unit when there are two sets of opposing propeller fans 8. The horizontal sectional view in an example is shown. In FIG. 18, the opposite propeller fan 8 has two sets of four propeller fans 8 in total, and the fan motor 6 that is connected and driven is shown as a single-axis type in which the shaft 6a extends in one direction. All the propeller fans 8 are connected by a shaft 6a which is housed in a truncated cone-shaped member 9 facing the propeller fan 8 at the end of the main body 1 of the indoor unit of the conditioner and extends from the fan motor 6. ing. At this time, the shaft 6a is long, and in order to suppress noise radiated from the propeller fan 8 due to vibrations such as minute shaft center vibration, a rubber joint 24 is provided between the second and third propeller fans 8 from the end. Are linked and linked.
[0044]
  FIG. 19 shows a case in which the opposite propeller fan 8 has a total of four propeller fans 8 and the fan motor 6 that drives them is a double-shaft type in which a shaft 6a extends in both directions. All the propeller fans 8 are connected by a shaft 6 a that is housed in a truncated cone-shaped member 9 facing the propeller fan 8 near the center of the machine body 1 and extends from the fan motor 6.
[0045]
  In this way, by rotating and driving a large number of propeller fans 8 with a single fan motor 6, the cost can be reduced compared to when a large number of propeller fans 8 are used. Furthermore, the structure of the main unit, that is, a suction port and a blowout port corresponding to a set of fans can be freely changed by increasing the motor capacity, and an easy-to-use structure is obtained.
[0046]
  20-23 shows another shape of the indoor unit of the air conditioner which concerns on this invention, and main structures correspond to the above-mentioned FIGS. 1-4.
[0047]
  20-23, the four blower outlets 4 are the shape protruded in the front direction with respect to the suction grille 7 of the front part 1d of the indoor unit main body 1 of an air conditioner. Accent on the appearance is obtained by replacing the shape of the blowout part on the end side of the main unit, that is, the inlet and outlet corresponding to one set of fans, with another shape from FIG. In addition to being effective, it is also effective for short circuits. Furthermore, by forming in this way, the installation space of the left and right vanes 5a and the upper and lower vanes 5b is expanded, the distance R from the propeller fan 8 to the upper and lower vanes 5b is expanded as a whole, the blowout flow of the propeller fan 8 and the upper and lower vanes Interference with 5b is eliminated, and ventilation resistance can be reduced. This can further increase fan efficiency.
[0048]
  FIG. 24 shows the air volume Q [m when the air outlet 4 protrudes in the front direction and does not protrude with respect to the suction grille 7 of the front part 1d of the indoor unit body 1 of the air conditioner.Three/ min] and the noise value SPL [dBA]. As shown in FIG. 24, the air outlet 4 is protruded and the upper and lower vanes 5 b are separated from the propeller fan 8, whereby the ventilation resistance is reduced and the noise can be reduced. Therefore, a quiet air conditioner indoor unit can be obtained.
[0049]
  25 and 26 are views showing other shapes of the indoor unit of the air conditioner according to the present invention, and are views corresponding to FIGS. High performance filters 26 are provided on both axial sides of the fan motor 6 in this figure. In addition, the same part as the figure mentioned above attaches | subjects the same code | symbol, and abbreviate | omits description. The high-performance filter 26 is a filter having a higher dust collection rate than the filters 16 and 16a, and has a filter only in a region where the heat exchanger 2 and the propeller fan 8 are close to each other. The vicinity of the center of the propeller fan 8 has a hole shape. ing. Originally, the wind speed in the vicinity of the heat exchanger 2 of the propeller fan 8 is higher than that in the other areas. Thus, by forming a filter with such a high dust collection rate, the wind speed in the vicinity of the heat exchanger 2 of the propeller fan 8 is increased. It decreases, and the air volume on the inflow side from the front of the propeller fan 8 increases. As a result, the air suction distribution tends to be uniform, and the fan efficiency is further improved. In addition, fine microdust and the like can be removed, and the air quality can be further improved in the space inside the heat exchanger.
[0050]
  FIG. 27 is a configuration diagram of the refrigeration cycle of the air conditioner. In the figure, 31 is an outdoor unit, 32 is stored in the outdoor unit, discharges refrigerant, and circulates between the indoor unit 38 through the four-way valve 3 through the pipe. Compressor 34, outdoor heat exchanger 35, outdoor fan 35, flow control valve 36, indoor heat exchanger 39, and indoor fan 40. The indoor unit 38 has the structure of the main body 1. In the heat exchanger 2 of FIG. 1 that is the indoor heat exchanger 39, the heat transfer pipe 55 penetrates a large number of plate-like fins, and the heat transfer pipe 55 has a refrigeration cycle pipe. The refrigerant is circulating through. Heat is exchanged between the refrigerant and the air B flowing between the fins to cool or warm the air and air conditioning is performed, and the refrigeration cycle controls the cooling, heating, or dehumidification. Although the main body 1 which is the indoor unit 38 of the air conditioner is improved in efficiency by a propeller fan, the outdoor fan 35 also uses a propeller fan, and even if the structure of the present invention, that is, an arc-shaped heat exchanger is used. It is natural to be good.
[0051]
  When a heat exchanger is used for dehumidification, the heat exchanger is divided into two parts and connected between them with a dehumidification valve. However, the space on the inner side of the heat exchanger is also effectively used for the installation of this dehumidification valve. The size of the device can be reduced. The configuration capable of dehumidifying the air conditioner capable of cooling and heating has been described. However, the indoor heat exchanger 39 and the outdoor heat exchanger 34 of the refrigeration cycle in FIG. 27 can be used separately from the heat exchanger 2 in FIG. For example, a dehumidifier can be used as it is. In this case, the refrigeration cycle is gathered in the main body 1, and it is not a wall-hanging structure but a floor installation structure, and the compressor and piping are accommodated in the inner circumferential space of the arc-shaped heat exchanger. In that case, if one propeller fan 8 is formed, that is, one side and the fan axial direction is vertical, it is convenient because heavy objects such as a heat exchanger and a compressor can be supported from below. As the refrigerant flowing through the heat transfer pipe 55, chlorofluorocarbon refrigerants R410A and R407C that do not contain chlorine are used, but natural refrigerants such as water, hydrocarbons, and carbon dioxide may be used. Even when the number of main unit is increased as shown in FIGS. 6 and 7, the number of outdoor units 31 in the refrigeration cycle may be one. The pipe connected to the indoor unit 38 is divided into two pipes in the middle of the room or the like and connected to the main unit in parallel.
[0052]
  The indoor unit of an air conditioner according to the present invention has at least one pair of two opposing propeller fans, covers at least the entire suction side of both of the opposing propeller fans, and a heat exchanger is disposed therebetween. It was established. Moreover, the indoor unit of the air conditioner according to the present invention has a wall surface on the back side and the top side of the air conditioner on the blowing side of the propeller fan located at both ends of the air conditioner, the back side of the air conditioner, It has the blower outlet which opened except the upper surface side. An indoor unit of an air conditioner according to the present invention has a surface perpendicular to the rotation axis of the propeller fan on the blower side of the propeller fan located at both ends of the air conditioner, a wall surface on the rear surface side, and an upper surface of the air conditioner. The air conditioner has an elongated air outlet that opens from the front surface to the lower surface of the indoor unit.
[0053]
  In the indoor unit of the air conditioner according to the present invention, the heat exchanger has a substantially arc shape along the outer periphery of the propeller fan. The indoor unit of an air conditioner according to the present invention is such that all propeller fans are rotationally driven by a single fan motor.
[0054]
  As described above, according to the present invention, the high-efficiency propeller fan is disposed relative to each other, and the heat exchanger is disposed so as to cover almost the entire suction side of the propeller fan. Since the fan shaft output can be lowered, it is possible to reduce the fan motor input. As a result, an energy-saving air conditioner indoor unit can be obtained.
  In addition, by combining a plurality of opposing propeller fans and heat exchangers between them, various configurations can be formed depending on the heat exchange performance.
[0055]
  According to the present invention, by making the two fans of a pair of opposing propeller fans different blade shapes and the number of blades, it is possible to increase the difference in the frequency of rotation noise, so that it is possible to eliminate the roaring noise, so that quiet air conditioning An indoor unit can be obtained.
[0056]
  According to the present invention, the side air outlets are formed on both side surfaces of the indoor unit body of the air conditioner, and the removable opening / closing plate is installed, so that the air conditioner body is installed at a place away from the wall. In this case, the air conditioning range can be expanded by removing the opening / closing plate, so that a comfortable environment can be created in a wide space of the room.
[0057]
  According to the present invention, since the air outlet has the elongated air outlet from the front to the bottom of both ends of the indoor unit main body of the air conditioner, the deterioration of the ventilation resistance due to the wind direction vane when the wind direction is changed is suppressed. An indoor unit of a harmony machine can be obtained.
[0058]
  According to the present invention, the heat exchanger mounted on the indoor unit body of the air conditioner is curved in an arc shape that is substantially uniformly spaced from the outer periphery of the propeller fan. The space between the back wall and the heat exchanger can be expanded to reduce ventilation resistance, and the suction distribution in other areas also tends to be uniform, so that drift can be suppressed and noise can be reduced, resulting in a quiet air conditioner indoor unit. be able to. Moreover, since it is not necessary to put an air bypass suppression member in the gap between the bent portions as in the case of a multi-stage bent heat exchanger, the number of work steps can be reduced.
[0059]
  According to the present invention, since a large number of propeller fans are rotationally driven by a single fan motor, the cost can be suppressed compared to when a large number of propeller fans are used, and an inexpensive indoor unit of an air conditioner can be obtained.
[0060]
[The invention's effect】
  The air conditioner of the invention according to claim 1Indoor unitIsSince the heat exchanger is also located on the outer periphery of the propeller fan,Propeller fanThe suction area can be used effectivelyPropeller fanEffect ofrateIn addition to sucking indoor air not only from the front and top surfaces of the indoor unit main unit but also from the lower part of the indoor unit main unit through the lower suction port, Since indoor air is sucked in, the heat exchange area increases and heat transfer performance can be improved.SkyspiritKeysumMachineCan improve the efficiency of.
[0061]
  The air conditioner of the invention according to claim 2Indoor unitIsSince the heat exchanger is also located on the outer periphery of the propeller fan,Propeller fanThe suction area can be used effectivelyPropeller fanIn addition to increasing the efficiency, not only from the front and top surfaces of the indoor unit main unit but also from the lower part of the indoor unit main unit through the lower suction port, the entire circumference of the outer circumference of the one-round heat exchanger excluding the bottom Because the indoor air is sucked in from, the heat exchange area increases and the heat transfer performance can be improved.SkyspiritKeysumMachineCan improve the efficiency of.Furthermore, since each of the pair of air outlets protrudes in the front direction from the suction port provided in the front of the indoor unit body, the distance from the propeller fan to the upper and lower vanes that change the wind direction up and down is increased. Interference between the propeller fan blow-off flow and the upper and lower vanes is eliminated, reducing ventilation resistance and reducing noise, and also provides an effect on a short circuit.
[0062]
  The air conditioner of the invention according to claim 3Indoor unitIsIndoor unitMain body horizontallyMultiple connectionsAir conditioning capacityCan be used flexibly depending on.
[Brief description of the drawings]
FIG. 1 is a perspective view of an indoor unit of an air conditioner according to Embodiment 1 of the present invention.
FIG. 2 is a horizontal sectional view of FIG. 1 in Embodiment 1 of the present invention.
FIG. 3 is a longitudinal sectional view taken along line XX of FIG. 2 in Embodiment 1 of the present invention.
4 is a longitudinal sectional view taken along YY of FIG. 2 in Embodiment 1 of the present invention. FIG.
FIG. 5 shows the air volume Q [m in the indoor unit of the present invention and the conventional air conditioner.ThreeThe figure which showed the relationship of axial output (zeta) [W] to / min].
6 is a perspective view of another example of an indoor unit of an air conditioner according to Embodiment 1 of the present invention. FIG.
7 is a horizontal sectional view of FIG. 6 in Embodiment 1 of the present invention.
FIG. 8 is a front view of one propeller fan in a pair of opposing propeller fans used in the indoor unit of the air conditioner according to Embodiment 1 of the present invention.
FIG. 9 is a front view of the other propeller fan in FIG. 8 according to Embodiment 1 of the present invention.
FIG. 10 is a perspective view of the indoor unit of the air conditioner according to Embodiment 1 of the present invention.
FIG. 11 is a horizontal sectional view of FIG. 10 in Embodiment 1 of the present invention.
FIG. 12 is a perspective view of another example of the air conditioner indoor unit according to Embodiment 1 of the present invention.
FIG. 13 is a perspective view of the indoor unit of the air conditioner according to Embodiment 1 of the present invention.
14 is a view corresponding to a longitudinal sectional view taken along line YY of FIG. 2 of FIG. 13 in Embodiment 1 of the present invention.
FIG. 15 shows a difference in noise value ΔSPL between the wind direction change vane angle when the ventilation resistance is minimum and the air direction change vane angle during cooling when the air volume Q is changed in the indoor unit of the present invention and the conventional air conditioner. The figure which showed the change.
FIG. 16 is a longitudinal sectional view corresponding to FIG. 3 of the indoor unit for an air conditioner according to Embodiment 1 of the present invention.
FIG. 17 is a comparative diagram showing a change in noise value with respect to the air volume Q in the heat exchanger of the multistage bending form and the heat exchanger of the arc form in the first embodiment of the present invention.
FIG. 18 is a horizontal sectional view of the indoor unit of the air conditioner according to Embodiment 1 of the present invention.
19 is a horizontal sectional view showing an example in which a double-shaft type is used for the fan motor in the indoor unit of the air conditioner of FIG. 18 according to Embodiment 1 of the present invention.
FIG. 20 is a perspective view of the indoor unit of the air conditioner according to Embodiment 1 of the present invention.
FIG. 21 is a horizontal sectional view of FIG. 20 in the first embodiment of the present invention.
FIG. 22 is a longitudinal sectional view taken along line XX of FIG. 20 in Embodiment 1 of the present invention.
FIG. 23 is a longitudinal sectional view taken along the line YY of FIG. 20 in the first embodiment of the present invention.
FIG. 24 shows the relationship between the air flow rate Q and the noise value SPL when the air outlet in the first embodiment of the present invention protrudes to the front with respect to the suction grille of the front portion of the indoor unit body of the air conditioner. Figure.
FIG. 25 is a horizontal sectional view of the air conditioner according to Embodiment 1 of the present invention.
FIG. 26 is a longitudinal sectional view of FIG. 25 in Embodiment 1 of the present invention.
FIG. 27 is a configuration explanatory diagram of a refrigeration cycle in Embodiment 1 of the present invention.
FIG. 28 is a longitudinal sectional view of an air conditioner equipped with a conventional cross-flow fan.
FIG. 29 is a perspective view of another conventional air conditioner indoor unit.
30 is a cross-sectional view of FIG. 27 of a conventional air conditioner.
31 is a longitudinal front sectional view of FIG. 27 of a conventional air conditioner.
FIG. 32 is a diagram showing the relationship of static pressure Ps to air volume Q of a cross-flow fan and propeller fan used in a conventional air conditioner.
FIG. 33 is a frequency characteristic diagram when a conventional air conditioner generates a beat sound.
FIG. 34 is a schematic diagram showing a suction wind speed distribution of a propeller fan of a conventional air conditioner.
[Explanation of symbols]
  DESCRIPTION OF SYMBOLS 1 Air conditioner main body, 1a Back wall, 1b Back surface part, 1c Upper surface part, 1d Front part, 2 Heat exchanger, 3 Drain pan, 4 Air outlet, 4a Lower air outlet, 4b Upper air outlet, 4c Side air outlet, 5 Vane change vanes, 5a Left and right vanes, 5b Top and bottom vanes, 6 Fan motor, 6a Shaft, 7 Suction grill, 7a Lower suction grill, 8 Propeller fan, 9 Frustum-shaped member, 10 Partition plate, 11 Bell mouth, 12 Outlet side Scroll casing, 13 outlet side air passage, 14 housing, 15 panel, 16 filter, 16a lower suction grille filter, 17 cross-flow fan impeller, 17a blade, 19 nose part, 20 circulating flow, 21 electronic board, 22 open / close plate , 23 Bypass suppression member, 24 Rubber joint 51, motor support, 52 main body mounting section, 53 display section, 54 cassette container, 55 heat transfer pipe, 100 room wall, 101 room ceiling surface, A propeller fan rotation direction, O rotation axis center, S propeller fan The distance of the gap between the heat exchanger and the distance between the rear wall of the indoor unit body of the air conditioner and the heat exchanger.

Claims (3)

室内の壁に据え付けられる壁掛け構造の室内機本体と、
この室内機本体の横方向の両端部付近に所定の間隔をあけて相対して配置されるとともに、一方は正回転方向の形状、他方が逆回転方向の形状を有して、同一の回転方向に回転して、吸い込んだ室内空気をそれぞれ前記室内機本体の側面方向へ吹き出す一組のプロペラファンと、
前記一組のプロペラファンのそれぞれの外周を含んで前記プロペラファンの吸い込み側を覆うように前記一組のプロペラファンに下方を除いて跨って配設され、前記一組のプロペラファンが吸い込んだ室内空気を冷したり暖めたりする熱交換器と、
前記熱交換器の内周側空間で、前記一組のプロペラファンの間に配置され、横方向両方にシャフトが延びて前記一組のプロペラファンをそれぞれ同一の回転方向に回転させる両軸タイプのファンモータと、
前記室内機本体の両端部にそれぞれ位置し、前記室内機本体の正面から下面にかけて縦方向に細長く開口し、前記熱交換器で冷やされたり暖められたりして前記熱交換器の内周側の空間を通って前記プロペラファンから吹き出された前記室内空気を室内に吹き出す一組の吹出口と、
前記室内機本体の両端部に設けられ、前記一組の吹出口のそれぞれへ向かう吹出側風路を形成して、前記プロペラファンから吹き出された前記室内空気を前記吹出口へ集めるスクロールケーシングと、
前記一組の吹出口の間で前記室内機本体の正面と上面とに設けられ、前記熱交換器を通過させるための室内空気を吸い込む吸込口と、
前記一組の吹出口の間で前記吹出口よりも奥側の位置にて前記室内機本体の下面に設けられ、前記室内機本体の下部から前記熱交換器を通過させるための室内空気を吸い込む下部吸込口と、
を備えたことを特徴とする空気調和機の室内機。 An indoor unit body with a wall-mounted structure that is installed on an indoor wall;
The indoor unit main body is disposed in the vicinity of both ends in the lateral direction with a predetermined interval therebetween, and one has a shape in the forward rotation direction and the other has a shape in the reverse rotation direction. A pair of propeller fans that rotate and blow out the sucked room air in the direction of the side surface of the indoor unit body ,
An interior of the pair of propeller fans that is disposed across the pair of propeller fans so as to cover the suction side of the propeller fan except for the lower side, and includes the outer periphery of the pair of propeller fans. A heat exchanger that cools and warms the air ,
A double-shaft type that is disposed between the pair of propeller fans in the inner circumferential space of the heat exchanger and has a shaft extending in both lateral directions to rotate the pair of propeller fans in the same rotational direction. A fan motor,
It is located at both ends of the indoor unit body, and is elongated in the vertical direction from the front side to the bottom side of the indoor unit body, and is cooled or warmed by the heat exchanger, A set of air outlets for blowing the room air blown from the propeller fan through the space into the room;
A scroll casing that is provided at both ends of the indoor unit main body, forms a blow-out side air passage toward each of the pair of air outlets, and collects the room air blown from the propeller fan to the air outlet;
A suction port that is provided on the front and upper surfaces of the indoor unit main body between the pair of air outlets, and sucks room air through which the heat exchanger passes,
Between the pair of air outlets, provided on the lower surface of the indoor unit main body at a position deeper than the air outlets, sucks indoor air from the lower part of the indoor unit main body through which the heat exchanger passes. A lower inlet,
An indoor unit of an air conditioner characterized by comprising a. 室内の壁に据え付けられる壁掛け構造の室内機本体と、
この室内機本体の横方向の両端部付近に所定の間隔をあけて相対して配置されるとともに、一方は正回転方向の形状、他方が逆回転方向の形状を有して、同一の回転方向に回転して、吸い込んだ室内空気をそれぞれ前記室内機本体の側面方向へ吹き出す一組のプロペラファンと、
前記一組のプロペラファンのそれぞれの外周を含んで前記プロペラファンの吸い込み側を覆うように前記一組のプロペラファンに下方を除いて跨って配設され、前記一組のプロペラファンが吸い込んだ室内空気を冷したり暖めたりする熱交換器と、
前記熱交換器の内周側空間で、前記一組のプロペラファンの間に配置され、横方向両方にシャフトが延びて前記一組のプロペラファンをそれぞれ同一の回転方向に回転させる両軸タイプのファンモータと、
前記室内機本体の両端部にそれぞれ位置し、前記室内機本体の正面から下面にかけて縦方向に細長く開口し、前記熱交換器で冷やされたり暖められたりして前記熱交換器の内周側の空間を通って前記プロペラファンから吹き出された前記室内空気を室内に吹き出す一組の吹出口と、
前記室内機本体の両端部に設けられ、前記一組の吹出口のそれぞれへ向かう吹出側風路を形成して、前記プロペラファンから吹き出された前記室内空気を前記吹出口へ集めるスクロールケーシングと、
前記一組の吹出口の間で前記室内機本体の正面と上面とに設けられ、前記熱交換器を通過させるための室内空気を吸い込む吸込口と、
前記一組の吹出口の間で前記吹出口よりも奥側の位置にて前記室内機本体の下面に設けられ、前記室内機本体の下部から前記熱交換器を通過させるための室内空気を吸い込む下部吸込口と、を備え、
前記一組の吹出口のそれぞれが、前記室内機本体の正面に設けられた前記吸込口よりも正面方向に突出していることを特徴とする空気調和機の室内機。 And an indoor unit Body wall-mounted structure that is installed in a room wall,
The indoor unit main body is disposed in the vicinity of both ends in the lateral direction with a predetermined interval therebetween, and one has a shape in the forward rotation direction and the other has a shape in the reverse rotation direction. A pair of propeller fans that rotate and blow out the sucked room air in the direction of the side surface of the indoor unit body,
An interior of the pair of propeller fans that is disposed across the pair of propeller fans so as to cover the suction side of the propeller fan except for the lower side, and includes the outer periphery of the pair of propeller fans. A heat exchanger that cools and warms the air ,
A double-shaft type that is disposed between the pair of propeller fans in the inner circumferential space of the heat exchanger and has a shaft extending in both lateral directions to rotate the pair of propeller fans in the same rotational direction. and the fan motor,
It is located at both ends of the indoor unit body, and is elongated in the vertical direction from the front side to the bottom side of the indoor unit body, and is cooled or warmed by the heat exchanger, A set of air outlets for blowing the room air blown from the propeller fan through the space into the room;
A scroll casing that is provided at both ends of the indoor unit main body, forms a blow-out side air passage toward each of the pair of air outlets, and collects the room air blown from the propeller fan to the air outlet;
A suction port that is provided on the front and upper surfaces of the indoor unit main body between the pair of air outlets, and sucks room air through which the heat exchanger passes,
Between the pair of air outlets, provided on the lower surface of the indoor unit main body at a position deeper than the air outlets, sucks indoor air from the lower part of the indoor unit main body through which the heat exchanger passes. A lower inlet, and
Wherein each of the pair of the air outlet is, the indoor unit indoor unit of an air conditioner, characterized in that protrudes in the front direction than said suction port provided in the front of the body. 前記室内機本体が横方向に複数連結されていることを特徴とする請求項１または請求項２に記載の空気調和機の室内機。 Indoor unit of an air conditioner according to claim 1 or claim 2, characterized in that the indoor unit main body has a plurality coupled laterally.
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