JP3771761B2

JP3771761B2 - Air conditioner

Info

Publication number: JP3771761B2
Application number: JP33695199A
Authority: JP
Inventors: 和彦毛塚; 裕塚田
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 1999-11-29
Filing date: 1999-11-29
Publication date: 2006-04-26
Anticipated expiration: 2019-11-29
Also published as: KR100370337B1; JP2001153450A; KR20010049690A; TW448277B; CN1298079A; CN1153937C

Description

【０００１】
【発明の属する技術分野】
本発明は、空気調和機に係り、特に傾斜した熱交換器の下方に配置される露受部を有する空気調和機に好適なものある。
【０００２】
【従来の技術】
従来の空気調和機としては、例えば、特開平１１−５１４１４号公報に記載されているように、空気の吸込み口及び吹き出し口を有する前面カバーと、吸込み口と吹き出し口の間の空気通路を構成するファンケーシングを有する本体ケースと、ファンケーシングにより構成された空気通路内に位置する貫流ファンと、この貫流ファンの少なくとも一部が収納されるように配設された逆Ｖ字状部を有する室内熱交換器と、この熱交換器の前部側下端部に対応して配置された前部露受け部と、室内熱交換器の後部側下端部に対応して配置された後部露受け部とを備え、後部露受け部は本体ケースと一体に成形され、この後部露受け部の貫流ファン側端部に後部ノーズを形成する部材を係合取り付けてなり、後部側の熱交換器の下面を後部露受け部の底面上に左右方向に延びる支持リブに載置して支持したものがある。
【０００３】
【発明が解決しようとする課題】
しかし、かかる従来の空気調和機は、後部側の熱交換器の下面が左右に延びる支持リブ上に載置されているに過ぎないため、熱交換器の両側部が本体ケースに固定されるとしても、傾斜した後部側の熱交換器と後部露受け部との間の隙間が組立てのばらつきや熱交換器の中央部のたわみ等により均一に保てなくなり、後部側の熱交換器における風速分布が不均一になって熱交換性能の低下及び騒音の増大等を招く虞があった。
【０００４】
本発明は、簡単な構成で、露受部と熱交換器との隙間を確実に確保できると共に、熱交換器の中央部分がたわむことを防止できることにより、熱交換器の前面を流下する露をこの隙間を通して露受部内に確実に流下することができると共に、熱交換器の風速分布を均一化することができ、熱交換性能が優れ、騒音の少ない空気調和機を得ることを目的とする。
【０００５】
【課題を解決するための手段】
上記目的を達成するための本発明の空気調和機は、前部熱交換器及び上部が前方に傾斜した後部熱交換器を略逆Ｖ字形に形成して配置されたクロスフィン形熱交換器と、前記熱交換器の後部熱交換器の下端部を収納し、樹脂成形された露受部と、前記後部熱交換器の下方に配置された貫流ファンとを備え、前記後部熱交換器の前面下部と前記露受部の前面部との間であって、前記後部熱交換器幅方向の中央部に前記露受部と一体に形成され、前記後部熱交換器のフィンピッチより厚い支持リブを前記後部熱交換器の前面下部に当接するように設けたことにある。
かかる本発明において、好ましくは、前記露受部の前面部を共用するファンケーシング部を備え、前記露受部の前面部の上端部に厚肉のノーズ部を一体に形成し、前記支持リブを前記ノーズ部とその下方の部分とにまたがって形成すると共に前記後部熱交換器幅方向に複数箇所設けたことにある。
【０００６】
本発明の第２の特徴は、前方上方に傾斜して下端部が露受部に収納された熱交換器の下端部傾斜面と露受部の前面部との間でかつ前記熱交換器の中央部に位置するように熱交換器支持部を前記露受部と一体に形成し、この支持部の上面を前記露受部の前面部の上端より低くしたことにある。
【０００７】
本発明の第３の特徴は、前方上方に傾斜して配置されたクロスフィン形熱交換器の下端部傾斜面と露受部の前面部との間でかつ前記熱交換器の中央部に位置するように複数の支持リブを前記露受部と一体に形成し、前記支持リブの厚さを前記熱交換器の放熱フィンのフィンピッチより大きくすると共に、前記支持リブに前記熱交換器の傾斜と同じ傾斜をした傾斜部を形成し、この傾斜部で前記熱交換器の下端部前面の中央部を支持したことにある。
【０００８】
本発明の第４の特徴は、略Ｖ字形に形成されたクロスフィン形熱交換器の後部熱交換器の下端部を収納した露受部の前面部の上端部に貫流ファンのノーズ部を厚肉に一体に形成すると共に、このノーズ部の後面側を前方上方に傾斜する傾斜面とし、前記後部熱交換器の下端部傾斜面と前記露受部の前面部との間でかつ前記熱交換器の中央部に位置するように熱交換器支持部を前記露受部と一体に形成したことにある。
【０００９】
本発明の第５の特徴は、略Ｖ字形に形成されたクロスフィン形熱交換器の後部熱交換器の下端部傾斜面と露受部の前面部との間でかつ前記後部熱交換器の中央部に位置するように複数の支持リブを前記露受部と一体に形成し、前記露受部の前面部の上端部に貫流ファンのノーズ部を厚肉に一体に形成すると共に、前記支持リブを前記ノーズ部とその下方の部分とにまたがって形成したことにある。
【００１０】
【発明の実施の形態】
以下、本発明の一実施例を図を用いて説明する。図１は本発明の一実施例を示す空気調和機の室内機の概略構成を示す縦断面図、図2は図1のＡ部詳細拡大図、図3は図1の空気調和機における熱交換器端部を示す正面図である。
【００１１】
室内ユニット１は、その外観を構成する横長の筐体２、この筐体２に形成される吸込口３０ａ、４０ａ、４１ａの内側に配置されるエアーフィルタ５、このエアーフィルタ５のさらに内側に配置される熱交換器６、室内空気を前記吸込口３０ａ、４０ａ、４１ａよりエアーフィルタ５及び熱交換器６を通して吸込み吹出口４０ｂより吹出す貫流ファン７等により構成されている。この室内ユニット１は、室内の壁面上部等に設置され、室外に配置された室外ユニット（図示せず）と冷媒配管、電気配線等を介して接続され、空気調和機を構成する。
【００１２】
筐体２は、後部を構成する筐体本体３と、前部を構成する化粧カバー４とを有する。化粧カバー４は筐体本体３に着脱可能に装着されている。この化粧カバー４の具体的装着構造は、上部が突起部と係合部の係合構造、下部がねじによる締結構造となっている。この化粧カバー４を筐体本体３から外すには、下部のねじを外した後に、化粧カバー４の下部を前方上方に回動し、さらに化粧カバー４を上方に持ち上げて上部の係合を解除することにより外すことができる。
【００１３】
筐体本体３は、後部ケーシング３０と、この後部ケーシング３０の前面に取付けられた前部ケーシング３１とを有している。この後部ケーシング３０と前部ケーシング３１とは別体に製作したものを組合わせて筐体本体３を構成している。
【００１４】
後部ケーシング３０は、樹脂成形により、吸込風路部３２、後部露受部３３、後部ファンケーシング部３４及び吹出風路部３５が一体に形成されている。また、吸込風路部３２の上面部、即ち、筐体本体３の上面後部には、吸込口３０ａが形成されている。この吸込口３０ａは、グリル状に形成されると共に、主に後部熱交換器６３に対向して設けられている。なお、後部露受部３３と後部ファンケーシング部３４とは、共通する部分を有する。この後部露受部３３の具体的構成については後述する。
【００１５】
また、前部ケーシング３１は、樹脂成形により、貫流ファン７に対する前部ノーズ部３６と、前部の熱交換器６１、６２に結露した露を受ける前部露受部３７とを有する。この前部ケーシング３１の前部ノーズ部３６と後部ケーシング３０の後部ファンケーシング部３４との間に貫流ファン７が配置されている。これにより、貫流ファン７は、その前方及び上方に形成される吸込風路７１を通して室内空気を吸込み、下方に形成される吹出風路７２へ吹出すようになっている。
【００１６】
この吸込風路７１は、後部ケーシング３０の吸込風路部３２、化粧カバー本体４０の上部、及び前面パネル４１により形成される。この吸込風路７１中にエアーフィルタ５及び熱交換器６が配置される。一方、吹出風路７２は、後部ケーシング３０の吹出風路部３５、及び前部ケーシング３１の露受部３７の下面により形成され、化粧カバー４の吹出口４０ｂに連通している。
【００１７】
化粧カバー４は、化粧カバー本体４０と、この化粧カバー本体４０の前面に取付けられた前面パネル４１と、吹出風路部３４から吹出す風向を変更する風向板４２とを有する。
【００１８】
化粧カバー本体４０は、樹脂成形により枠状に形成され、上面部に吸込風路５１に連通する吸込口４０ａを有し、下面部に吹出風路７２に連通する吹出口４０ｂを有している。また、吸込口４０ａは、グリル状に形成されると共に、主に前面上部熱交換器６２に対向して設けられている。
【００１９】
前面パネル４１は、樹脂成形により形成され、前面中央部に前面下部熱交換器６１に対向して吸込口４１ａを有している。吸込口４１ａはグリル状に形成されている。
【００２０】
このように、筐体２は、前面及び上面に複数の吸込口３０ａ、４０ａ、４１ａ、を有するものであり、前面から上面にわたって吸込口が形成されているので、吸込抵抗が小さい構成となっている。
【００２１】
また、前面パネル４１は、その上端部を軸として化粧カバー本体４０に回転自在に取付けられている。従って、前面パネル４１の下部を前方上方に回動してエアーフィルタ５の前方を開放することにより、その開放部からエアーフィルタ５を取り出すことができる。
【００２２】
エアーフィルタ５は、化粧カバー本体４０の前面部に着脱可能に装着され、筐体２の吸込口３０ａ，４０ａ、４１ａにまたがってその内側に位置し、熱交換器６の吸込側に位置している。
【００２３】
冷凍サイクルの一部を構成する熱交換器６は、複数の熱交換器を組合わせて構成され、具体的には、前面下部熱交換器６１、前面上部熱交換器６２及び後部熱交換６３より構成されている。前面下部熱交換器６１は、吸込口４１ａに主に対向し、ほぼ垂直に配置されている。前面上部熱交換器６２は、吸込口４０ａに主に対向し、斜め上方に傾斜して配置されている。後部熱交換器６３は、吸込口３０ａに主に対向して位置しており、斜め下方に傾斜して配置されている。なお、前面上部熱交換器６２と後部熱交換器６３とは略逆Ｖ字形に形成されている。何れの熱交換器６１、６２、６３も多数の放熱フィンを狭い間隔で並置して熱交換パイプを貫通させたクロスフィン形熱交換器で構成され、各熱交換器６１、６２、６３の熱交換パイプの間を接続パイプで接続し、連通することにより一つの熱交換器６として構成されている。
【００２４】
このように、熱交換器６は、複数の熱交換器６１、６２、６３が各吸込口３０ａ、４０ａ、４１ａに対向して構成しているので、その吸込面積を大きなものとすることができる。
【００２５】
室内空気を送風するための貫流ファン７は、前面下部熱交換器６１の後方で、前面上部熱交換器６２及び後部熱交換器６３の下方に位置して設けられている。この貫流ファン７を実線矢印のように回転することにより、点線の矢印に示すように、室内空気を吸込んで吹出す。
【００２６】
次に、かかる空気調和機の冷房運転における基本的な動作を説明する。
【００２７】
冷房運転は、冷凍サイクルを動作させると共に、室外機のファン及び室内機１の貫流ファン７を回転させる。冷凍サイクルの動作により熱交換器６は低温となる。また、貫流ファン７の回転により、室内空気は、吸込口３０ａ、４０ａ、４１ａから吸込まれ、エアーフィルタ５にて除塵された後、各熱交換器６１、６２、６３を通る際に冷却、除湿されて貫流ファン７に至り、吹出風路７２を通って、吹出口４０ｂから室内に吹出される。これにより、所定の冷房運転が行われる。
【００２８】
この冷房運転において、前面下部熱交換器６１及び前面上部熱交換器６２に結露した露は、前部ケーシング３１の前部露受部３７に流下し、この前部露受部３７から室内機１の背面下部に集められ、外部に排水される。一方、後部熱交換器６３に結露した露は、後部露受部３３に流下し、この後部露受部３３の両側から室内機１の背面下部に集められ、外部に排水される。
【００２９】
次に、後部露受部３３の具体的構成について図２及び図３を用いて説明する。
【００３０】
後部露受部３３は、前面部３３ａ、底面部３３ｂ、背面部３３ｃ及び側面部３３ｄよりなる横長の樋状に形成され、具体的には、後部ケーシング３０の一部として一体に形成されている。この後部露受部３３の前面部３３ａは、後部ケーシング部３４の一部と共用する構成であり、貫流ファン７に対するケーシング機能を一部兼ね備えている。
【００３１】
後部露受部３３の前面部３３ａの上部は、貫流ファン７の後部ノーズ部３３ｅを一体に形成している。このように、貫流ファン７の後部ノーズ部３３ｅを露受部３３に一体に形成しているので、製作が簡単で、ノーズ部３３ｅの貫流ファン７に対する寸法精度を確保することができる。この後部ノーズ部３３ｅは、上方に立ち上がる基本形状にすると共に、前面側３３ｆが略円弧状をしており、かつ後面側が前方上方に傾斜する傾斜面３３ｇをしている。このように、後部ノーズ部３３ｅを上方に立ち上がる基本形状にすることにより、貫流ファン７の吸込面積を大きくすることができ、コンパクトな寸法で大風量を得ることができる。また、前面側３３ｆが略円弧状をしているので、貫流ファン７に室内空気をスムースに吸込むことができる。さらには、傾斜面３３ｇを形成しているので、傾斜した後部熱交換器６３の前端面との間に隙間を容易に確保することができる。これにより、後部熱交換器６３の前端面を流下する露６４は、後部ノーズ部３３ｅに接触することが防止され、後部露受部３３内に流下させることができる。従って、後部熱交換器６３の前端面を流下する露６４が後部ノーズ部３３ｅに接触してその前面側３３ｆから後部ケーシング部３４内に流入し、貫流ファン７によって吹出される室内空気と共に室内に吹出されることを防ぐことができる。
【００３２】
後部露受部３３の底面部３３ｂの上面は、中央部が高く、左右が低く傾斜している。従って、後部熱交換器６３から後部露受部３３に流下した露は、その左右に傾斜した傾斜面によって左右に分かれて素早く外部に導かれる。
【００３３】
後部露受部３３ｂの内側には、後部熱交換器６３を支持するための第１の支持リブ３３ｈと第２の支持リブ３３ｉとが一体に形成されている。
【００３４】
この第１の支持リブ３３ｈは、底面部３３ｂの上面に、後部露受部３３内を前後に仕切るように後部熱交換器６３の横幅概略全部にわたって形成され、後部熱交換器６３の下面を概略全横幅にわたって支持している。このように、後部熱交換器６３の下面を概略全横幅にわたって第１の支持リブ３３ｈで支持しているので、後部熱交換器６３を確実に支持することができる。なお、後部熱交換器６３から流下する露は、この第１の支持リブ３３ｈの前後に分かれて左右に案内される。
【００３５】
上記第２の支持リブ３３ｉは、横方向中央部の複数ヶ所に後部露受部３３に一体に形成され、具体的には３ヶ所形成され、後部熱交換器６３の中央部を支持している。このように、後部露受部３３に一体に形成された第２の支持リブ３３ｉで後部熱交換器６３の中央部を支持しているので、後部熱交換器６３と前面部３３ａとの隙間を確実に確保でき、後部熱交換器６３の中央部が輸送中、運転中等にたわむことを防止することができる。これにより、放熱フィン６３ａの間隔を均一に保つことができるので、後部熱交換器６３の風速分布が均一化でき、優れた熱交換性能及び低騒音を得ることができる。なお、後部熱交換器６３は、図３に示すように、多数の放熱フィン６３ａに熱交換パイプ６３ｂを貫通させて形成されており、接続パイプ６３ｃにより前面上部熱交換器６２に接続されている。
【００３６】
複数の支持リブ３３の中の中央の支持リブ３３ｉは、底面部３３ｂの傾斜面の最も高い部分に位置して形成され、流下する露の流れに邪魔にならないようになっている。また、各支持リブ３３ｉは、前面部３３ａと底面部３３ｂにまたがって形成され、前面部３３ａの補強の機能を有している。特に、一体に形成された後部ノーズ部３３ｅに支持リブ３３ｉをまたがって形成しているので、厚肉で強度が弱くなる後部ノーズ部３３ｅを補強することができる。
【００３７】
上記各支持リブ３３ｉは、具体的には、上面部３３ｊが前面部３３ａの上端より低く形成され、後面部３３ｋが第１の支持リブ３３ｈと間隔をあけて形成され、この上面部３３ｊと後面部３３ｋとの角部が傾斜して後部熱交換器６３の前面下端部の支持部３３ｍに形成されている。このように、支持リブ３３ｉの上面部３３ｊを前面部３３ａの上端より低く形成しているので、後部熱交換器６３の前面を流下する露６４が上面部３３ｊに至っても、後部ケーシング部３３ｅの前面側に流れ込むことが無く、露受部内の底面部３３ｂ上に流下し、確実に排出することができる。また、第２の支持リブ３３ｉの後面部３３ｋを第１の支持リブ３３ｈに対して間隔をあけて形成しているので、後部露受部３３の底面部上に流下した露をこの間隔を通して左右に流すことができる。さらには、支持リブ３３ｉの傾斜した支持部３３ｍによりある程度の幅をもって後部熱交換器６３を支持しているので、後部熱交換器６３を確実に支持することができる。なお、各支持リブ３３ｉの厚さは、後部熱交換器６３の放熱フィン６３ａのフィンピッチより大きく形成され、具体的には、約２倍程度大きくすることが好ましく、これにより、支持リブ３３ｉの成形が簡単で、後部熱交換器６３が確実に支持できる構成となる。
【００３８】
後部熱交換器６３は、上述したように第１の支持リブ３３ｈと第２の支持リブ３３ｉで支持されるが、両端に設けられる側板６３ｄをねじ等により後部ケーシング３０または後部ケーシングに３０に取付けられた取付け具に固定されている。
【００３９】
また、後部ケーシング３０に一体に形成された後部露受部３３は、図３に示すように後部熱交換器６３の側方の接続パイプ６３ｃ、膨張弁６５等の下方まで延長して形成されている。これにより、簡単な構成で、この接続パイプ６３ｃ、膨張弁６５等から流下する露を後部露受部３にて受けることができる。
【００４０】
かかる本発明の実施例によれば、上方に傾斜して配置された熱交換器６３の下端部傾斜面と露受部３３の壁部３３ａとの間でかつ前記熱交換器６３の中央部に位置するように熱交換器支持部３３ｉを前記露受部３３と一体に形成しているので、簡単な構成で、露受部３３の壁部３３ａと熱交換器６３の下端部傾斜面との隙間を確実に確保できると共に、熱交換器６３の中央部分がたわむことを防止することができる。これにより、熱交換器６３の傾斜面を流下する露をこの隙間を通して露受部３３内に確実に流下することができると共に、熱交換器６３の風速分布を均一化することができ、熱交換性能が優れ、騒音の少ない空気調和機とすることができる。
【００４１】
また、前方上方に傾斜して下端部が露受部３３に収納された熱交換器６３の下端部傾斜面と露受部３３の前面部３３ａとの間でかつ前記熱交換器６３の中央部に位置するように熱交換器支持部３３ｉを前記露受部３３と一体に形成し、この支持部３３ｉの上面を前記露受部３３の前面部３３ａの上端より低くしているので、簡単な構成で、支持部３３ｉの上端に流下した露が露受部３の前面部３３ａの上端から露受部３３の外面に流れ出ることを防止することができる。
【００４２】
さらに、前方上方に傾斜して配置されたクロスフィン形熱交換器６３の下端部傾斜面と露受部３３の前面部３３ａとの間でかつ前記熱交換器６３の中央部に位置するように複数の支持リブ３３ｉを前記露受部３３と一体に形成し、前記支持リブ３３ｉの厚さを前記熱交換器６３の放熱フィン６３ａのフィンピッチより大きくすると共に、前記支持リブ３３ｉに前記熱交換器６３の傾斜と同じ傾斜をした傾斜部３３ｍを形成し、この傾斜部３３ｍで前記熱交換器の下端部前面の中央部を支持しているので、支持リブ３３ｉを容易に形成できると共に、熱交換器６３を確実に支持することができる。
【００４３】
また、略Ｖ字形に形成されたクロスフィン形熱交換器６の後部熱交換器６３の下端部を収納した露受部３３の前面部３３ａの上端部に貫流ファン７のノーズ部３３ｅを厚肉に一体に形成すると共に、このノーズ部３３ｅの後面側を前方上方に傾斜する傾斜面３３ｇとし、前記後部熱交換器６３の下端部傾斜面と前記露受部３３の前面部３３ａとの間でかつ後部熱交換器６３の中央部に位置するように熱交換器支持部３３ｉを前記露受部３３と一体に形成しているので、製作が容易で、貫流ファン７に対するノーズ部３３ｅの寸法精度を確保することができると共に、後部熱交換器６３の前面を流下する露を確実に露受部３３内に導くことができる。
【００４４】
さらには、略Ｖ字形に形成されたクロスフィン形熱交換器６の後部熱交換器６３の下端部傾斜面と露受部３３の前面部３３ａとの間でかつ前記後部熱交換器６３の中央部に位置するように複数の支持リブ３３ｉを前記露受部３３と一体に形成し、前記露受部３３の前面部３３ａの上端部に貫流ファン７のノーズ部３３ｅを厚肉に一体に形成すると共に、前記支持リブ３３ｉを前記ノーズ部３３ｅとその下方の部分とにまたがって形成しているので、厚肉で強度が弱くなるノーズ部３３ｅを支持リブ３３ｉで補強することができる。
【００４５】
【発明の効果】
本発明によれば、簡単な構成で、露受部と熱交換器との隙間を確実に確保できると共に、熱交換器の中央部分がたわむことを防止できることにより、熱交換器の前面を流下する露をこの隙間を通して露受部内に確実に流下することができると共に、熱交換器の風速分布を均一化することができ、熱交換性能が優れ、騒音の少ない空気調和機が得られる。
【図面の簡単な説明】
【図１】本発明の一実施例を示す空気調和機の室内機の概略構成を示す縦断面図である。
【図２】図1のＡ部詳細拡大図である。
【図３】図1の空気調和機における熱交換器端部を示す正面図である。
【符号の説明】
１…室内ユニット、２…筐体、３…筐体本体、４…化粧カバー、５…エアーフィルタ、６…熱交換器、７…貫流ファン、３０…後部ケーシング、３０ａ…吸込口、３１…前部ケーシング、３２…吸込風路部、３３…後部露受部、３３ａ…前面部、３３ｂ…底面部、３３ｃ…背面部、３３ｄ…側面部、３３ｅ…後部ノーズ部、３３ｆ…前面側、３３ｇ…傾斜面、３３ｈ…第１の支持リブ、３３ｉ…第２の支持リブ、３３ｊ…上面部、３３ｋ…後面部、３３ｍ…支持部、３５…吹出風路部、３４…後部ファンケーシング部、３６…前部ノーズ部、３７…前部露受部、４０…化粧カバー本体、４０ａ…吸込口、４０ｂ…吹出口、４１…前面パネル、４１ａ…吸込口、４２…風向板、６１、６２…前部の熱交換器、６３…後部熱交換器、６３ａ…放熱フィン、６３ｂ…熱交換パイプ、６４…露、７１…吸込風路、７２…吹出風路。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioner, and is particularly suitable for an air conditioner having a dew receiving portion disposed below an inclined heat exchanger.
[0002]
[Prior art]
As a conventional air conditioner, for example, as described in Japanese Patent Application Laid-Open No. 11-51414, a front cover having an air inlet and an air outlet, and an air passage between the air inlet and the air outlet are configured. A room case having a main body case having a fan casing, a cross-flow fan located in an air passage constituted by the fan casing, and an inverted V-shaped portion disposed so as to accommodate at least a part of the cross-flow fan A heat exchanger, a front dew receiving portion disposed corresponding to the front side lower end portion of the heat exchanger, and a rear dew receiving portion disposed corresponding to the rear side lower end portion of the indoor heat exchanger; The rear dew receiving part is formed integrally with the main body case, and a member forming the rear nose is engaged and attached to the end of the rear dew receiving part on the cross-flow fan side, and the lower surface of the heat exchanger on the rear side is Rear dew receiving part Are those supported by placing a support rib extending in the left-right direction on the bottom surface.
[0003]
[Problems to be solved by the invention]
However, in such a conventional air conditioner, since the lower surface of the heat exchanger on the rear side is merely placed on the support rib extending left and right, both sides of the heat exchanger are fixed to the main body case. However, the gap between the inclined heat exchanger on the rear side and the rear dew receiving part cannot be kept uniform due to variations in assembly, deflection in the center of the heat exchanger, etc., and the wind speed distribution in the heat exchanger on the rear side May become non-uniform, resulting in a decrease in heat exchange performance and an increase in noise.
[0004]
The present invention has a simple configuration and can reliably secure a gap between the dew receiving portion and the heat exchanger and prevent the central portion of the heat exchanger from being bent, thereby preventing dew flowing down the front surface of the heat exchanger. An object of the present invention is to obtain an air conditioner that can surely flow down into the dew receiving section through this gap, can uniform the wind speed distribution of the heat exchanger, has excellent heat exchange performance, and has low noise.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, an air conditioner according to the present invention includes a front fin heat exchanger and a cross fin heat exchanger disposed in a substantially inverted V shape with a front heat exchanger and a rear heat exchanger having an upper portion inclined forward. , housing a lower portion of the rear heat exchanger of the heat exchanger, comprising a dew receiving portion is resin-molded, and a cross-flow fan disposed below the rear heat exchanger, the front face of said rear heat exchanger a between the front portion of the lower and the dew receiving portion is formed in a front kilometers receiving integrally in a central portion of the rear heat exchanger width direction, thicker support ribs than the fin pitch of the rear heat exchanger Is provided so as to come into contact with the lower front portion of the rear heat exchanger .
In the present invention, preferably, a fan casing portion sharing a front surface portion of the dew receiving portion is provided, a thick nose portion is integrally formed at an upper end portion of the front surface portion of the dew receiving portion, and the support rib is formed. In addition to being formed across the nose portion and the lower portion thereof, a plurality of locations are provided in the width direction of the rear heat exchanger.
[0006]
The second feature of the present invention is that between the lower end inclined surface of the heat exchanger in which the lower end of the heat exchanger is housed in the dew receiving part and the front part of the dew receiving part is inclined upward and forward. The heat exchanger support part is formed integrally with the dew receiving part so as to be located at the center, and the upper surface of the support part is lower than the upper end of the front part of the dew receiving part.
[0007]
The third feature of the present invention is that it is located between the inclined surface at the lower end of the cross fin-type heat exchanger and the front surface of the dew receiving portion, which is disposed to be inclined upward and forward, and at the center of the heat exchanger. A plurality of support ribs are formed integrally with the dew receiving portion, the thickness of the support ribs is larger than the fin pitch of the heat dissipating fins of the heat exchanger, and the inclination of the heat exchanger to the support ribs And the central portion of the front surface of the lower end of the heat exchanger is supported by the inclined portion.
[0008]
The fourth feature of the present invention is that the nose portion of the cross-flow fan is thickened at the upper end portion of the front portion of the dew receiving portion that houses the lower end portion of the rear heat exchanger of the cross fin heat exchanger formed in a substantially V shape. The heat exchange is performed between the lower end inclined surface of the rear heat exchanger and the front surface portion of the dew receiving portion, with the rear surface side of the nose portion inclined forward and upward, formed integrally with the meat. The heat exchanger support part is formed integrally with the dew receiving part so as to be located in the central part of the vessel.
[0009]
The fifth feature of the present invention is that the rear heat exchanger is formed between the lower inclined surface of the rear heat exchanger of the cross fin type heat exchanger formed in a substantially V shape and the front surface of the dew receiving portion. A plurality of support ribs are formed integrally with the dew receiving part so as to be located in the center part, and a nose part of a cross-flow fan is formed integrally with a thick wall at the upper end of the front part of the dew receiving part, and the support The rib is formed over the nose portion and the portion below the nose portion.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 is a longitudinal sectional view showing a schematic configuration of an indoor unit of an air conditioner according to an embodiment of the present invention, FIG. 2 is a detailed enlarged view of a part A in FIG. 1, and FIG. 3 is a heat exchange in the air conditioner of FIG. It is a front view which shows a vessel end part.
[0011]
The indoor unit 1 includes a horizontally long casing 2 constituting the appearance, an air filter 5 disposed inside suction ports 30a, 40a, and 41a formed in the casing 2, and a further inner side of the air filter 5. The heat exchanger 6 is configured by a cross-flow fan 7 that blows indoor air from the suction ports 30a, 40a, and 41a through the air filter 5 and the heat exchanger 6 and from the suction outlet 40b. The indoor unit 1 is installed on an upper wall surface of the room and connected to an outdoor unit (not shown) arranged outside the room via a refrigerant pipe, electric wiring, and the like, and constitutes an air conditioner.
[0012]
The housing 2 includes a housing body 3 constituting the rear portion and a decorative cover 4 constituting the front portion. The decorative cover 4 is detachably attached to the housing body 3. The specific mounting structure of the decorative cover 4 is such that the upper part is an engaging structure of a protrusion and an engaging part, and the lower part is a fastening structure using screws. To remove the decorative cover 4 from the housing body 3, after removing the lower screw, the lower portion of the decorative cover 4 is rotated forward and upward, and the decorative cover 4 is further lifted upward to disengage the upper portion. Can be removed.
[0013]
The housing body 3 includes a rear casing 30 and a front casing 31 attached to the front surface of the rear casing 30. The housing body 3 is configured by combining the rear casing 30 and the front casing 31 which are manufactured separately.
[0014]
The rear casing 30 is integrally formed with a suction air passage portion 32, a rear dew receiving portion 33, a rear fan casing portion 34, and an outlet air passage portion 35 by resin molding. Further, a suction port 30 a is formed in the upper surface portion of the suction air passage portion 32, that is, in the upper rear portion of the housing body 3. The suction port 30a is formed in a grill shape and is provided mainly facing the rear heat exchanger 63. The rear dew receiving part 33 and the rear fan casing part 34 have a common part. A specific configuration of the rear dew receiving unit 33 will be described later.
[0015]
Further, the front casing 31 has a front nose portion 36 for the cross-flow fan 7 and a front dew receiving portion 37 that receives dew condensed on the front heat exchangers 61 and 62 by resin molding. The cross-flow fan 7 is disposed between the front nose portion 36 of the front casing 31 and the rear fan casing portion 34 of the rear casing 30. As a result, the cross-flow fan 7 sucks room air through the suction air passage 71 formed forward and upward, and blows it out to the blow-out air passage 72 formed below.
[0016]
The suction air passage 71 is formed by the suction air passage portion 32 of the rear casing 30, the upper portion of the decorative cover body 40, and the front panel 41. The air filter 5 and the heat exchanger 6 are disposed in the suction air passage 71. On the other hand, the blowout air passage 72 is formed by the blowout air passage portion 35 of the rear casing 30 and the lower surface of the dew receiving portion 37 of the front casing 31, and communicates with the air outlet 40 b of the decorative cover 4.
[0017]
The decorative cover 4 includes a decorative cover main body 40, a front panel 41 attached to the front surface of the decorative cover main body 40, and a wind direction plate 42 that changes the wind direction blown out from the blowing air passage portion 34.
[0018]
The decorative cover main body 40 is formed in a frame shape by resin molding, has a suction port 40a communicating with the suction air passage 51 on the upper surface portion, and has an air outlet 40b communicating with the blowout air passage 72 on the lower surface portion. . Further, the suction port 40a is formed in a grill shape and is provided mainly facing the front upper heat exchanger 62.
[0019]
The front panel 41 is formed by resin molding, and has a suction port 41a at the center of the front surface facing the lower front heat exchanger 61. The suction port 41a is formed in a grill shape.
[0020]
Thus, the housing | casing 2 has several suction inlet 30a, 40a, 41a in the front surface and an upper surface, and since the suction inlet is formed from the front surface to the upper surface, it becomes a structure with low suction resistance. Yes.
[0021]
The front panel 41 is rotatably attached to the decorative cover body 40 with the upper end portion as an axis. Therefore, by rotating the lower part of the front panel 41 forward and upward to open the front of the air filter 5, the air filter 5 can be taken out from the open part.
[0022]
The air filter 5 is detachably attached to the front surface portion of the decorative cover body 40, is located on the inside of the housing 2 across the suction ports 30a, 40a, 41a, and is located on the suction side of the heat exchanger 6. Yes.
[0023]
The heat exchanger 6 constituting a part of the refrigeration cycle is configured by combining a plurality of heat exchangers. Specifically, from the front lower heat exchanger 61, the front upper heat exchanger 62, and the rear heat exchanger 63, It is configured. The front lower heat exchanger 61 mainly faces the suction port 41a and is arranged substantially vertically. The front upper heat exchanger 62 is mainly opposed to the suction port 40a and is inclined obliquely upward. The rear heat exchanger 63 is located mainly facing the suction port 30a, and is disposed obliquely downward. The front upper heat exchanger 62 and the rear heat exchanger 63 are formed in a substantially inverted V shape. Each of the heat exchangers 61, 62, 63 is composed of a cross fin type heat exchanger in which a large number of radiating fins are juxtaposed at a narrow interval and a heat exchange pipe is penetrated. The heat of each heat exchanger 61, 62, 63 The exchange pipes are connected by a connection pipe and communicated to form a single heat exchanger 6.
[0024]
Thus, since the heat exchanger 6 is configured such that the plurality of heat exchangers 61, 62, 63 are opposed to the respective suction ports 30a, 40a, 41a, the suction area can be increased. .
[0025]
The cross-flow fan 7 for blowing indoor air is provided behind the front lower heat exchanger 61 and below the front upper heat exchanger 62 and the rear heat exchanger 63. By rotating the cross-flow fan 7 as indicated by the solid line arrow, the indoor air is sucked and blown out as indicated by the dotted line arrow.
[0026]
Next, basic operations in the cooling operation of the air conditioner will be described.
[0027]
In the cooling operation, the refrigeration cycle is operated, and the fan of the outdoor unit and the cross-flow fan 7 of the indoor unit 1 are rotated. The heat exchanger 6 is cooled by the operation of the refrigeration cycle. In addition, due to the rotation of the cross-flow fan 7, the indoor air is sucked from the suction ports 30a, 40a, and 41a and is removed by the air filter 5 and then cooled and dehumidified when passing through the heat exchangers 61, 62, and 63. Then, it reaches the once-through fan 7, passes through the blowout air passage 72, and is blown out into the room from the air outlet 40 b. Thereby, a predetermined cooling operation is performed.
[0028]
In this cooling operation, dew that has condensed on the front lower heat exchanger 61 and the front upper heat exchanger 62 flows down to the front dew receiving portion 37 of the front casing 31, and the indoor unit 1 from this front dew receiving portion 37. Collected at the bottom of the back and drained to the outside. On the other hand, dew that has condensed on the rear heat exchanger 63 flows down to the rear dew receiving unit 33, is collected from both sides of the rear dew receiving unit 33 at the lower back of the indoor unit 1, and is drained to the outside.
[0029]
Next, a specific configuration of the rear dew receiving unit 33 will be described with reference to FIGS.
[0030]
The rear dew receiving portion 33 is formed in a horizontally long bowl shape including a front surface portion 33 a, a bottom surface portion 33 b, a back surface portion 33 c and a side surface portion 33 d, and specifically, is integrally formed as a part of the rear casing 30. . The front surface portion 33 a of the rear dew receiving portion 33 is configured to be shared with a part of the rear casing portion 34, and partially has a casing function for the cross-flow fan 7.
[0031]
An upper portion of the front surface portion 33 a of the rear dew receiving portion 33 integrally forms a rear nose portion 33 e of the cross flow fan 7. Thus, since the rear nose portion 33e of the cross-flow fan 7 is formed integrally with the dew receiving portion 33, the manufacture is simple and the dimensional accuracy of the nose portion 33e with respect to the cross-flow fan 7 can be ensured. The rear nose portion 33e has a basic shape that rises upward, the front surface side 33f has a substantially arc shape, and the rear surface side has an inclined surface 33g that is inclined forward and upward. Thus, by making the rear nose portion 33e into a basic shape that rises upward, the suction area of the cross-flow fan 7 can be increased, and a large air volume can be obtained with a compact size. Further, since the front side 33f has a substantially arc shape, the indoor air can be smoothly sucked into the cross-flow fan 7. Furthermore, since the inclined surface 33g is formed, a gap can be easily ensured between the inclined rear heat exchanger 63 and the front end surface. Thereby, the dew 64 flowing down the front end face of the rear heat exchanger 63 is prevented from coming into contact with the rear nose portion 33e, and can flow down into the rear dew receiving portion 33. Accordingly, the dew 64 flowing down the front end surface of the rear heat exchanger 63 contacts the rear nose portion 33e, flows into the rear casing portion 34 from the front side 33f, and enters the room together with the indoor air blown out by the cross-flow fan 7. It can prevent being blown out.
[0032]
The upper surface of the bottom surface portion 33b of the rear dew receiving portion 33 is inclined such that the central portion is high and the left and right are low. Therefore, the dew flowing down from the rear heat exchanger 63 to the rear dew receiving unit 33 is divided into left and right by the inclined surfaces inclined right and left and is quickly guided to the outside.
[0033]
A first support rib 33h and a second support rib 33i for supporting the rear heat exchanger 63 are integrally formed inside the rear dew receiving portion 33b.
[0034]
The first support rib 33h is formed on the upper surface of the bottom surface portion 33b over the entire width of the rear heat exchanger 63 so as to partition the rear dew receiving portion 33 forward and backward, and the lower surface of the rear heat exchanger 63 is roughly illustrated. Supports the entire width. Thus, since the lower surface of the rear heat exchanger 63 is supported by the first support rib 33h over substantially the entire width, the rear heat exchanger 63 can be reliably supported. Note that the dew flowing down from the rear heat exchanger 63 is divided into the front and rear of the first support rib 33h and guided to the left and right.
[0035]
The second support ribs 33 i are formed integrally with the rear dew receiving portion 33 at a plurality of positions in the central portion in the lateral direction, specifically, at three locations, and support the central portion of the rear heat exchanger 63. . As described above, since the central portion of the rear heat exchanger 63 is supported by the second support rib 33i formed integrally with the rear dew receiving portion 33, the gap between the rear heat exchanger 63 and the front surface portion 33a is formed. It can be ensured reliably, and the central part of the rear heat exchanger 63 can be prevented from being bent during transportation or operation. Thereby, since the space | interval of the radiation fin 63a can be kept uniform, the wind speed distribution of the rear part heat exchanger 63 can be equalize | homogenized, and the outstanding heat exchange performance and low noise can be obtained. As shown in FIG. 3, the rear heat exchanger 63 is formed by passing a heat exchange pipe 63b through a large number of radiating fins 63a, and is connected to the front upper heat exchanger 62 by a connection pipe 63c. .
[0036]
The central support rib 33i among the plurality of support ribs 33 is formed at the highest portion of the inclined surface of the bottom surface portion 33b so as not to obstruct the flow of dew that flows down. Each support rib 33i is formed across the front surface portion 33a and the bottom surface portion 33b, and has a function of reinforcing the front surface portion 33a. In particular, since the support rib 33i is formed so as to straddle the integrally formed rear nose portion 33e, the rear nose portion 33e that is thick and weak in strength can be reinforced.
[0037]
Specifically, each of the support ribs 33i is formed such that the upper surface portion 33j is lower than the upper end of the front surface portion 33a, and the rear surface portion 33k is formed at a distance from the first support rib 33h. A corner portion with respect to the surface portion 33k is inclined and formed on the support portion 33m at the lower end portion of the front surface of the rear heat exchanger 63. Thus, since the upper surface portion 33j of the support rib 33i is formed lower than the upper end of the front surface portion 33a, even if the dew 64 flowing down the front surface of the rear heat exchanger 63 reaches the upper surface portion 33j, the rear casing portion 33e Without flowing into the front side, it flows down onto the bottom surface portion 33b in the dew receiving portion and can be reliably discharged. Further, since the rear surface portion 33k of the second support rib 33i is formed at a distance from the first support rib 33h, the dew that flows down on the bottom surface portion of the rear dew receiving portion 33 is left and right through this interval. Can be shed. Furthermore, since the rear heat exchanger 63 is supported with a certain width by the inclined support portion 33m of the support rib 33i, the rear heat exchanger 63 can be reliably supported. The thickness of each support rib 33i is formed larger than the fin pitch of the radiating fins 63a of the rear heat exchanger 63, and specifically, it is preferable to increase the thickness of the support rib 33i by about twice. Molding is simple and the rear heat exchanger 63 can be reliably supported.
[0038]
The rear heat exchanger 63 is supported by the first support rib 33h and the second support rib 33i as described above, but the side plates 63d provided at both ends are attached to the rear casing 30 or the rear casing 30 with screws or the like. Fixed to the mounted fixture.
[0039]
Further, the rear dew receiving portion 33 formed integrally with the rear casing 30 extends to the lower side of the connection pipe 63c on the side of the rear heat exchanger 63, the expansion valve 65 and the like as shown in FIG. Yes. Thereby, the dew flowing down from the connection pipe 63c, the expansion valve 65 and the like can be received by the rear dew receiving portion 3 with a simple configuration.
[0040]
According to the embodiment of the present invention, between the inclined surface of the lower end portion of the heat exchanger 63 that is inclined upward and the wall portion 33a of the dew receiving portion 33 and in the central portion of the heat exchanger 63. Since the heat exchanger support portion 33i is formed integrally with the dew receiving portion 33 so as to be positioned, the wall portion 33a of the dew receiving portion 33 and the lower end inclined surface of the heat exchanger 63 have a simple configuration. While ensuring a clearance gap reliably, it can prevent that the center part of the heat exchanger 63 bends. Thereby, the dew flowing down the inclined surface of the heat exchanger 63 can surely flow into the dew receiving portion 33 through this gap, and the wind speed distribution of the heat exchanger 63 can be made uniform, and the heat exchange can be performed. An air conditioner with excellent performance and low noise can be obtained.
[0041]
Further, the central portion of the heat exchanger 63 is disposed between the inclined surface of the lower end portion of the heat exchanger 63 and the front surface portion 33a of the dew receiving portion 33 which are inclined forward and upward and the lower end portion is accommodated in the dew receiving portion 33. The heat exchanger support part 33i is formed integrally with the dew receiving part 33 so as to be positioned at the position, and the upper surface of the support part 33i is made lower than the upper end of the front surface part 33a of the dew receiving part 33. With the configuration, it is possible to prevent the dew flowing down to the upper end of the support portion 33 i from flowing from the upper end of the front surface portion 33 a of the dew receiving portion 3 to the outer surface of the dew receiving portion 33.
[0042]
Furthermore, it is located between the lower end inclined surface of the cross fin heat exchanger 63 and the front surface portion 33a of the dew receiving portion 33, which is arranged to be inclined forward and upward, and at the center of the heat exchanger 63. A plurality of support ribs 33i are formed integrally with the dew receiving portion 33, and the thickness of the support ribs 33i is larger than the fin pitch of the radiating fins 63a of the heat exchanger 63, and the heat exchange with the support ribs 33i is performed. Since the inclined portion 33m having the same inclination as the inclination of the vessel 63 is formed and the central portion of the front surface of the lower end of the heat exchanger is supported by the inclined portion 33m, the support rib 33i can be easily formed, The exchanger 63 can be reliably supported.
[0043]
Further, the nose portion 33e of the cross-flow fan 7 is thickened on the upper end portion of the front surface portion 33a of the dew receiving portion 33 that accommodates the lower end portion of the rear heat exchanger 63 of the cross fin heat exchanger 6 formed in a substantially V shape. And the rear surface side of the nose portion 33e is an inclined surface 33g that is inclined forward and upward, between the lower end inclined surface of the rear heat exchanger 63 and the front surface portion 33a of the dew receiving portion 33. In addition, since the heat exchanger support portion 33i is formed integrally with the dew receiving portion 33 so as to be located at the center portion of the rear heat exchanger 63, it is easy to manufacture and the dimensional accuracy of the nose portion 33e with respect to the cross-flow fan 7 And the dew flowing down the front surface of the rear heat exchanger 63 can be reliably guided into the dew receiving portion 33.
[0044]
Furthermore, between the lower end inclined surface of the rear heat exchanger 63 of the cross fin heat exchanger 6 formed in a substantially V shape and the front surface portion 33 a of the dew receiving portion 33, and the center of the rear heat exchanger 63. A plurality of support ribs 33i are formed integrally with the dew receiving part 33 so as to be positioned at the upper part, and a nose part 33e of the cross-flow fan 7 is formed integrally with a thick wall at the upper end of the front surface part 33a of the dew receiving part 33. At the same time, since the support rib 33i is formed across the nose portion 33e and the portion below the nose portion 33e, the nose portion 33e which is thick and weak in strength can be reinforced by the support rib 33i.
[0045]
【The invention's effect】
According to the present invention, the clearance between the dew receiving portion and the heat exchanger can be reliably ensured with a simple configuration, and the central portion of the heat exchanger can be prevented from being bent, thereby flowing down the front surface of the heat exchanger. The dew can surely flow down into the dew receiving section through this gap, and the air speed distribution of the heat exchanger can be made uniform, and an air conditioner with excellent heat exchange performance and low noise can be obtained.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a schematic configuration of an indoor unit of an air conditioner showing an embodiment of the present invention.
FIG. 2 is a detailed enlarged view of a portion A in FIG.
FIG. 3 is a front view showing an end portion of the heat exchanger in the air conditioner of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Indoor unit, 2 ... Housing, 3 ... Housing main body, 4 ... Cosmetic cover, 5 ... Air filter, 6 ... Heat exchanger, 7 ... Cross-flow fan, 30 ... Rear casing, 30a ... Suction port, 31 ... Front Part casing, 32 ... suction air passage part, 33 ... rear dew receiving part, 33a ... front part, 33b ... bottom part, 33c ... back part, 33d ... side part, 33e ... rear nose part, 33f ... front side, 33g ... Inclined surface, 33h ... first support rib, 33i ... second support rib, 33j ... upper surface portion, 33k ... rear surface portion, 33m ... support portion, 35 ... outlet air passage portion, 34 ... rear fan casing portion, 36 ... Front nose part, 37 ... Front dew receiving part, 40 ... Cosmetic cover body, 40a ... Suction port, 40b ... Air outlet, 41 ... Front panel, 41a ... Suction port, 42 ... Wind direction plate, 61, 62 ... Front part Heat exchanger, 63 ... rear heat exchanger, 63a ... heat dissipation Fin, 63b ... heat exchange pipe, 64 ... Russia, 71 ... suction air passage, 72 ... blow-out air duct.

Claims

A cross fin-type heat exchanger which is arranged by forming a front heat exchanger and a rear heat exchanger whose upper part is inclined forward in a substantially inverted V shape ;
Housing the lower end of the rear heat exchanger of the heat exchanger, and a resin molded dew receiving part ;
A once-through fan disposed below the rear heat exchanger ,
A between the front portion of the dew receiving portion and the lower front of said rear heat exchanger, is formed prior kilometers receiving integrally in a central portion of the rear heat exchanger width direction, said rear heat exchanger An air conditioner provided with a support rib thicker than the fin pitch of the rear heat exchanger so as to contact the lower part of the front surface of the rear heat exchanger .

The air conditioner according to claim 1, further comprising a fan casing portion sharing a front surface portion of the dew receiving portion, and integrally forming a thick nose portion at an upper end portion of the front surface portion of the dew receiving portion, The front surface side of the nose portion is formed in a substantially arc shape, the rear surface side of the nose portion is formed on an inclined surface that is inclined forward and upward, and the support ribs are provided at a plurality of locations in the central portion in the width direction of the rear heat exchanger. An air conditioner provided with each support rib of the plurality of support ribs formed across the nose portion and a portion below the nose portion .