JP2004156872A - Outdoor unit for air conditioner - Google Patents

Outdoor unit for air conditioner Download PDF

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Publication number
JP2004156872A
JP2004156872A JP2002324616A JP2002324616A JP2004156872A JP 2004156872 A JP2004156872 A JP 2004156872A JP 2002324616 A JP2002324616 A JP 2002324616A JP 2002324616 A JP2002324616 A JP 2002324616A JP 2004156872 A JP2004156872 A JP 2004156872A
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Japan
Prior art keywords
outdoor unit
heat exchanger
section
air
main body
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JP2002324616A
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Japanese (ja)
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JP3742891B2 (en
Inventor
Jiro Yamamoto
治郎 山本
Shimei Tei
志明 鄭
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Daikin Industries Ltd
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Daikin Industries Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To make equipment compactification and increase of air quantity compatible with each other in an outdoor unit for an air conditioner. <P>SOLUTION: This outdoor unit for air conditioner is installed so that a main heat exchange surface of a heat exchanger of U-shaped cross section corresponds to the long-side part side opening part of a body casing of rectangular cross section, to form the heat exchange surface as large as possible. Heat exchanging performance is thereby improved, and air blowing sound is reduced. Further, this outdoor unit is constituted so that, to increase the air quantity, the outer diameter of a blower fan is formed in a maximum bore allowed from the short side part side dimension of the body casing, and the radius of curvature of air suction port side cross section of a bellmouth of the blower fan is made axially asymmetric in conformity to the shape of the heat exchanger of U-shaped cross section disposed upstream of the blower fan, and also, the outdoor unit is thereby constituted to effectively improve air quantity characteristics while making the improvement of energy saving performance and the demand for equipment compactification compatible with each other. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本願発明は、送風性能の向上を図った空気調和機の室外機ユニットの構造に関するものである。
【0002】
【従来の技術】
従来から空気調和機の室外機ユニットとして、例えば上部に送風ファンおよびファンケーシングよりなる送風ユニットがあり、下部に水平断面形状がコの字形の熱交換器と該水平断面形状がコの字形の熱交換器(以下、単に断面コの字形の熱交換器という)と対向する面側の制御ボックス、それらを収納する室外機本体ケーシングよりなる本体ユニットがある所謂上吹き出しタイプの室外機ユニットが存在する。
【0003】
そして、その場合、上記断面コの字形の熱交換器および制御ボックスを収納する下部側本体ケーシングの水平断面は、例えば長方形状となっている。そして、上記本体ケーシングに対する断面コの字形の熱交換器および送風ファンの配置と上記ファンケーシング内側に形成されたベルマウス部のアール面(断面形状)は、上記送風ファン回転時の風量特性を向上させることを目的として、例えば上記断面コの字形の熱交換器の本体部(主たる熱交換器部)と上記制御ボックス側をそれぞれ上記本体ケーシングの相互に対向する短辺側に配置する一方、上記送風ファンおよびファンケーシングを、上記断面コの字形の熱交換器側よりも上記制御ボックス側の方に偏位させて配置するとともに、上記ファンケーシング内ベルマウス部のアール面の半径を、吸込流が急角度で上昇する上記断面コの字形の熱交換器本体部側で最大半径となるような構造にしていた(例えば、特許文献1参照)。
【0004】
このような室外機ユニットでは、上記送風ファンが回転すると、上記本体ケーシングの外気導入口からユニット外の空気が導入され、上記断面コの字形の熱交換器で熱交換された後にベルマウス部を通って送風ファンに流れるとき、外部から空気が導入される熱交換器側のベルマウス部のアール面の半径が、外部から空気が導入されない制御ボックス側よりも大きく形成されているので、熱交換器側でファン軸方向に沿って流れる空気に対する抵抗が小さくなり、ベルマウス部の熱交換器側から送風ファンに流入する風量の方が多くなる。また、熱交換器側から制御ボックス側に回り込む空気は、ファン軸方向に沿わずにベルマウス部のアール面に対して斜めに回り込んで流入するようになるため、ベルマウス部のアール面の半径が小さくても空気の流線の曲率半径は大きくなる。このため、ベルマウス部入口のアール面での空気の流線の曲率半径が周方向の位置で変動しにくくなり、全体として空気の流入風量が増加する結果、風量特性を向上させることができる。
【0005】
【特許文献1】
特開2002−221341号公報(第1〜第4頁、図1および図3)
【0006】
【発明が解決しようとする課題】
ところで、最近では省エネ性能重視の観点から、上記のような空気調和機用室外機についても、その省エネ性能の向上が求められている。また、同時に設置スペース上の制約を小さくし、さらには運搬性を改善するなどの必要から、機器のコンパクト化の要望も高い。
【0007】
そして、同空気調和機用室外機の場合、上記機器コンパクト化の要求に応えながら、その省エネ性能を向上させるには、限られた本体スペースの範囲で、可能な限り有効に熱交換器の熱交換面積を拡大し、しかも空気吸込口部分から吹出口部分まで空気の偏流を可能な限り有効に防止して、その送風性能および熱交換能力を最大限に増大させることが必要である。
【0008】
そこで、上記従来例のような断面コの字形の熱交換器を用いた上吹き出し型の室外機ユニットにおいて、同省エネ性能の向上と機器コンパクト化の要求との両立を狙って、例えば上記断面コの字形の熱交換器の本体部(主たる熱交換器部)を十分に大きな熱交面積を確保することができる上記長方形状の本体ケーシングの長辺部側に配置することによって、熱交換性能を向上させるとともに圧損を小さくして送風音を低減し、かつ風量アップのために上記送風ファンの羽根車外径を最大限、例えば上記長方形状の本体ケーシングの短辺部幅寸法の約85%以上となるような大口径のものにすることが考えられる。
【0009】
しかし、そのようにした場合には、ファン羽根車の外径とファンケーシングとの寸法上の制約から、上記のような半径差の大きいベルマウス6のアール面構造は採用することができない。すなわち、上記のようにベルマウス部のアール面の半径を軸対称から非軸対称に変更することによって、風量特性の向上を図るということはできなくなる。
【0010】
これに対し、本願発明は、上記のように、断面コの字形の熱交換器の主たる熱交面を、上記のような長方形状の本体ケーシングの長辺部側開口部に対応させて設置し、同熱交換面を可及的に広く形成することによって熱交換性能を向上させるとともに送風音を低減し、かつ風量アップのために上記送風ファンの外径を、上記本体ケーシング短辺部側寸法から許容される最大の口径にしたような場合においても、周方向に変化する送風ファンの吸込気流に適切に対応できるように、上記ベルマウスの空気吸込口側断面の曲率半径を、上記送風ファンの上流側にある断面コ字形の熱交換器の形状に合わせて非軸対称にし、省エネ性能の向上と機器コンパクト化の要求を両立させながら、有効に風量特性の向上を図ることができるようにした空気調和機の室外機ユニットを提供することを目的とするものである。
【0011】
【課題を解決するための手段】
本願発明は、上記の目的を達成するために、次のような課題解決手段を備えて構成されている。
【0012】
(1) 第1の課題解決手段(請求項1の発明)
この発明の第1の課題解決手段に係る空気調和機の室外機ユニットは、水平断面形状が長方形状をなす室外機本体ケーシング1Aと、該室外機本体ケーシング1Aの後面側長辺部および左右両面側短辺部の3面に位置して、その底部から上部まで伸びる水平断面形状がコの字形の空気吸込用開口部1b,1a,1dと、該空気吸込用開口部1b,1a,1dに対応して設けられた水平断面形状がコの字形の熱交換器7と、上記室外機本体ケーシング1Aの上部に位置し、下部から上方に向けて、その水平断面形状が長方形状から円形に変化するファンケーシング1Bと、該ファンケーシング1Bの円形部内側に設けられたベルマウス6と、上記ファンケーシング1B内の上記ベルマウス6に対応して設けられ、上記水平断面形状がコの字形の空気吸込用開口部1b,1a,1dを介して上記室外機本体ケーシング1Aの後面側および左右両面側から吸い込んだ空気を上記水平断面形状がコの字形の熱交換器7を通して上方に吹き出す送風ファン4とを備えてなる空気調和機の室外機ユニットにおいて、上記ベルマウス6を有する上記ファンケーシング1B円形部の外径を上記本体ケーシング1Aの短辺部の幅と略同等の径まで拡大することによって、上記設置される送風ファン4の羽根車の外径を可及的に大きくする一方、上記ベルマウス6の空気吸込口6a側断面の曲率半径Rを、上記熱交換器7側の形状に対応した非軸対称の値に設定したことを特徴としている。
【0013】
したがって、このような構成では、上述のように、断面コの字形の熱交換器7の主たる熱交面を、上記のような水平断面形状が長方形状の本体ケーシング1Aの長辺部側開口部1bに対応させて設置し、同熱交換面を可及的に広く形成することによって、熱交換性能を向上させるとともに送風音を低減し、かつ風量アップのために上記送風ファン4の外径φを、上記本体ケーシング1Aの短辺部側寸法Laから許容される最大の口径まで拡大したような場合において、周方向(回転方向)に変化する送風ファン4の吸込気流に適切に対応できるように、上記ベルマウス6の空気吸込口6a側断面の曲率半径Rを、上記送風ファン4の上流側にある断面コの字形の熱交換器7の形状に合わせて非軸対称にするようにしているので、ファン羽根車の外径とファンケーシングの寸法の制約を受けることなく、省エネ性能の向上と機器コンパクト化の要求を両立させながら、有効に風量特性の向上を図ることができるようになる。
【0014】
(2) 第2の課題解決手段(請求項2の発明)
この発明の第2の課題解決手段に係る空気調和機の室外機ユニットは、上記第1の課題解決手段の構成を前提とし、その水平断面形状がコの字形の熱交換器7は、その左右両面側熱交換器部7a,7dの何れか一方側が後面側熱交換器部7bに対して略90°のコーナ角θ、他方側が同90°よりも所定角度以上に大きいコーナ角θを有して形成されていることを特徴としている。
【0015】
このような構成によると、当該室外機ユニットの設置に際し、コーナ角θの大きい左右両面側何れか一方側の熱交換器部(7a又は7d)側を壁面に接した状態で据え付けたり、室外機ユニットを2台並べて設置したような時にも、壁面又は隣接室外機ユニットとの間に十分な空気吸込空間を確保することができるようになり、左右両面側熱交換器部の何れの側でも、有効に空気を通すことができる。
【0016】
(3) 第3の課題解決手段(請求項3の発明)
この発明の第3の課題解決手段に係る空気調和機の室外機ユニットは、上記第1又は第2の課題解決手段の構成を前提とし、その送風ファン4の羽根車は、室外機本体ケーシング1Aの短辺部幅限界までの最大外径φを有し、熱交換器7の上方部までクロスオーバーした状態で設けられていることを特徴としている。
【0017】
このように構成すると、室外機ユニット本体の大きさを可及的にコンパクト化した上で、その送風量を最大限にアップさせることができる。
【0018】
(4) 第4の課題解決手段(請求項4の発明)
この発明の第4の課題解決手段に係る空気調和機の室外機ユニットは、上記第1,第2又は第3の課題解決手段の構成を前提とし、その水平断面形状がコの字形の熱交換器7と対向対面する室外機本体ケーシング1Aの前面側長辺部には制御ボックス8があり、上記ベルマウス6は、その空気吸込口6a側断面の曲率半径Rが、当該制御ボックス8の位置にも対応した非軸対称な値に設定されていることを特徴としている。
【0019】
水平断面形状がコの字形の熱交換器7が存在しない対向面側を流れる空気流の曲率は、もちろん緩やかではあるが、制御ボックスのような障害物があると、当然ながら、その位置に応じて部分的に圧損を生じ、偏流が発生する。
【0020】
したがって、真にベルマウス周方向の空気吸込流量を均一化しようとすると、それらの事情も考慮しなければならない。
【0021】
そこで、上記のようにベルマウス6の空気吸込口6a側断面の曲率Rを決定するには、上記制御ボックス8の位置をも考慮して行うようにする。
【0022】
(5) 第5の課題解決手段(請求項5の発明)
この発明の第5の課題解決手段に係る空気調和機の室外機ユニットは、上記第4の課題解決手段の構成を前提とし、その制御ボックス8が室外機本体ケーシング1Aの前面側長辺部の中間点位置よりも左右いずれか一方側に偏位して配置されている場合、制御ボックス8がない被偏位部側のベルマウス6の空気吸込口6a側断面の曲率半径Racは、その反対側の制御ボックス8がある偏位部側ベルマウス6の空気吸込口6a側断面の曲率半径Rcdよりも大きく形成されていることを特徴としている。
【0023】
上記のように水平断面形状がコの字形の熱交換器の対面側長辺部に制御ボックス8を設けた室外機ユニットの構成において、同制御ボックス8の位置を、例えば左右両方向の何れか一方側コーナー部に寄せるようにすると、同偏位によって制御ボックス8がなくなった領域部分の通風抵抗がなくなって、その吸気性能を向上させることができる。
【0024】
他方、そのようにすると、上記偏位によって制御ボックス8が設けられた領域部分の空気の流通性が悪くなる。
【0025】
そこで、それに対応して、これを改善するために、制御ボックス8がなくなった被偏位領域の曲率半径Rを少し大きくする一方、制御ボックスが存在するようになった偏位領域の曲率半径を少し小さくして、上記制御ボックス8の設置位置の変更に伴う送風性能の低下を効果的に防止する。
【0026】
【発明の効果】
以上の結果、本願発明の空気調和機の室外機ユニットによると、機器本体のコンパクト化を図りながら、室外機の送風性能を可及的に向上させることができ、同一送風量の下での送風音を可及的有効に低減することが可能になる。また、同時にファン入力も低減することが可能となる。
【0027】
【発明の実施の形態】
(実施の形態1)
図1〜図3は、本願発明の実施の形態1に係る空気調和機の室外機ユニットの構成を示している。
【0028】
先ず図1および図2はその基本的な構成を示しており、図中符号1は、当該室外機ユニットである。この室外機ユニット1は、熱交換器7および各種機器が設置される下部側本体ケーシング1Aと送風ファン4が設置される上部側ファンケーシング1Bとからなっている。そして、構造上、その中心となる下部側本体ケーシング1Aは、例えば図2の平面表示状態において、左側から右側方向に見ることにより、その紙面の上側を左側、下側を右側、また同紙面の左側を前側、右側を後側と仮定すると、その水平断面形状は全体として左右方向に所定寸法長く、前後方向に所定寸法短かい長方形状をなし、上下方向に所定の高さを有する直方体形状(有底角筒状)のものとなっている。
【0029】
すなわち、この本体ケーシング1Aは、その平面状態において、上記前後方向の寸法をLa、左右方向の寸法をLbとすると、それら各寸法La,Lbの関係が、La<Lbとなっている。そして、この下部ケーシング1Aには必要な個所に必要な加工が施されて、例えば後面側の略全体には第1の空気吸込用開口部1bが、また左右両面側の後面寄り略2/3部分には第2,第3の空気吸込用開口部1a,1dが、さらに前面側にはメンテナンス用開口部1cがそれぞれ設けられている。上記第1,第2,第3の空気吸込用開口部1b,1a,1dは、それら全体として水平断面形状がコの字形(以下、単に断面コの字形という)をなすものとなっている。
【0030】
そして、同全体として断面コの字形をなす後面側第1の空気吸込用開口部1bおよび左右両面側第2,第3の空気吸込用開口部1a,1dには、例えば図示のように、上記本体ケーシング1A内において、その底板部1f上から上方側ファンケーシング1Bとの境界線2部分まで延びて設置された水平断面形状がコの字形(以下、単に断面コの字形という)の熱交換器7の主たる熱交換器部である後面側第1,従たる熱交換器部である左右両面側第2,第3の各熱交換器部7b,7a,7dの熱交換面が臨まされている。この熱交換器7は、上記各熱交換器部7b,7a,7dが相互に一体の例えばプレートフィン型の空気熱交換器により構成されており、上記左側面側第2の空気吸込用開口部1aに対応する左側面側第2の熱交換器部7aと後面側第1の空気吸込用開口部1bに対応する後面側第1の熱交換器部7bとは上記本体ケーシング1Aのコーナ角(90°)に対応したコーナ角θ=略90°の角度で曲成されているが、他方第3の空気吸込用開口部1dに対応する第3の熱交換器部7dは同前面側第1の熱交換器部7bに対してコーナ角θ=100°〜110°の大きな角度で外側に広げて曲成されている。これにより、当該室外機ユニット1の右側面側を壁面側に接して据え付けたり、2台接して設置したりしたような時にも相互の間に有効な空気吸込スペースSPを取ることができるようにしている。一方、上記メンテナンス用開口部1cには、開閉扉が設けられている。
【0031】
また、上記本体ケーシング1A内の上記底板部1fの前面部側上方には、例えば図示のように、圧縮機等が設置される機器室およびサービススペース3Aが設けられており、同機器室およびサービススペース3Aの風が通りやすく冷却効果の高い上方部位置には、その前面側左右方向中央部に位置して所定幅左右方向に延びる所定奥行幅の制御ボックス8が、上記メンテナンス用開口部1cを介して前方側外部から点検操作しやすいようにスペースファクター良く設置されている。
【0032】
そして、以上のようにして後面側(長辺部側)、左右両面側(短辺部側)の3方面に亘って同じく長辺部、短辺部を有する断面コの字形の熱交換器7が設けられ、同断面コの字形の熱交換器7(長辺部7b,短辺部7a,短辺部7d)および各種機器が設けられた上記本体ケーシング1Aの上部には、例えば図2のような状態で、上部側ファンケーシング1Bが、例えば嵌合等の方法により一体に設けられており、同ファンケーシング1B内のファン設置部3Bには、所定のファン支持手段を介してプロペラファン等の軸流型の送風ファン4が上下方向に延びて設置されている。なお、図中の符号4aは当該送風ファン4のハブ、4bは羽根、5aはファンモータ、5aは同ファンモータの回転駆動軸を示している。
【0033】
この実施の形態の場合、上記のように、熱交換器7および各種機器が設置される断面長方形状の本体ケーシング1A部分と送風ファン4が設置される上記ファンケーシング1B部分とは、略ファンモータ5部分を基準として下方と上方に区分されており、上記ファンケーシング1Bは下部から上方に向けて、その水平断面形状が長方形状から円形に変化するものとなっている。そして、その上部側円筒部内にファン設置部3Bを形成している。また同ファンケーシング1Bの円筒部上部の内側にはベルマウス6が設けられている。そして、上記送風ファン4は、その羽根車部分を、同ベルマウス6に対応させた状態で設けられている。
【0034】
そして、その場合、上記ベルマウス6を有する上記ファンケーシング1B円筒部の外径は、上記本体ケーシング1Aの短辺部の幅Laと同等の径まで拡大することによって、上記設置される送風ファン4の羽根車の外径φを可及的に大きくすることにより、上記送風ファン4の羽根車が、上記断面コの字形の熱交換器7の上端面よりも上方に位置し、例えば図2に示すように、上記断面コの字形の熱交換器7の上端部まで上下方向に重なったクロスオーバー状態で設置されている。そして、それによって、可及的に大きな径の羽根車を採用できるようにして十分に送風性能のアップを実現しながらも、なお有効に室外機ユニット1本体の小型、コンパクト化が図られるようにしている。
【0035】
そして、その場合において、上記ベルマウス6は、その空気吹出口6b側断面の曲率半径Rは、羽根車回転方向(ベルマウス周方向)の全周に亘って一定であるが、他方空気吸込口6a側断面の曲率半径Rは当該ベルマウス6部分への空気の進入角の相違に応じて、異なった曲率半径のものに形成されている。
【0036】
すなわち、同部分の曲率半径Rは、例えば図3に示すように、上記ベルマウス6を下部側本体ケーシング1Aの前後方向および左右方向両方向の各中間部で各々各辺を2等分することによって対角方向の4つの領域に区分する。そして、これら各辺を2等分した4つの中間点部分の内、短辺部である第2の熱交換器7a側(左側面側)中間点の曲率半径Raを全体の内の最大曲率半径(max)に形成するとともに、長辺部である後面側第1の熱交換器部(最も熱交面積の広い主たる熱交換器部)7bの中間点の曲率半径Rbおよび同じく長辺部である前面側制御ボックス8のある中間点の曲率半径Rcをそれぞれ全体の内の最小の曲率半径(min)に形成し、さらに短辺部である第3の熱交換器部7d側(右側面側)中間点の曲率半径Rdをそれら最大(max)と最小(min)の中間の値の曲率半径(mid)に形成し、それらの間の上記4つの領域の曲率半径Rab(RaとRb間)、Rac(RaとRc間)、Rbd(RbとRd間)、Rcd(RcとRd間)は、それぞれ曲率半径の大きい上記最大半径Ra(max)、中間半径Rd(mid)の各中間点側から上記最小半径Rb(min)、Rc(min)の各中間点側にかけて、次第に小さくなる全体として滑らかな曲率半径に形成されている。
【0037】
したがって、このようにした場合には、上記ファン羽根車の外径とファンケーシングとの寸法上の制約を受けることなく、上記ベルマウス部の空気吸込口側アール面の曲率半径を軸対称から非軸対称に変更することができ、風量特性の向上を図ることができる。
【0038】
しかも、その場合において、上記断面コの字形の熱交換器7(7b,7a,7d)側の曲率半径変化領域RabとRbdの曲率半径の平均値Rと反対側(制御ボックス8側)の曲率半径変化領域RacとRcdの曲率半径の平均値Rとは、R>Rの関係となるように形成されている。つまり、断面コの字形の熱交換器7側の曲率半径Rの縮小変化率が、同形状の熱交換器7のない非空気吸込口領域の曲率半径の縮小変化率よりも小さくなるように構成されている。
【0039】
これにより、上記送風ファン4の羽根車が1回転する間のベルマウス6の空気吹出口6b部分への空気供給量が全周に亘って可及的に均一化され、風量特性、送風性能が向上し、同一送風量の下で、送風音が有効に低減され、かつ送風ファン4への入力も小さくて済むようになる。
【0040】
(実施の形態2)
次に、図4は、本願発明の実施の形態2に係る空気調和機の室外機ユニットの構成を示している。
【0041】
この実施の形態の空気調和機の室外機ユニットは、上記図1および図2に示した実施の形態1の室外機ユニットの構成において、上述の制御ボックス8の位置を、例えば図2に示すように、断面コの字形の熱交換器7のコーナ角(曲成角)θが大きい第3の熱交換器部7d面側、つまり右側面側コーナー部に寄せることによって、前部側機器室およびメンテナンススペース3A側領域の吸気性能を向上させるようにしている。
【0042】
他方、そのようにすると、上述した4つの領域Rab、Rbd、Rac、Rcdの内のRcd領域の空気の流通性が悪くなる。
【0043】
そこで、それに対応し、かつ後者の問題をも改善するために、上記Rac領域の曲率半径Rを少し大きくする一方、同Rcd領域の曲率半径Rを少し小さくして(Rac>Rcd)、上記制御ボックス8の設置位置の変更に伴う送風性能の低下を防止するようにしている。
【0044】
その他の部分の構成および作用は、全て上記実施の形態1のものと同様であり、同様の作用効果を奏する。
【図面の簡単な説明】
【図1】本願発明の実施の形態1に係る空気調和機の室外機ユニットの上下方向全体の構成を示す断面図である。
【図2】同室外機ユニットの平面方向の構成を示す平面図である。
【図3】同室外機ユニットの要部の構成を示す平面図である。
【図4】本願発明の実施の形態2に係る空気調和機の室外機ユニットの図3と同様の要部の構成を示す平面図である。
【符号の説明】
1は室外機ユニット、1Aは本体ケーシング、1Bはファンケーシング、1aは左側面側空気吸込用開口部、1bは後面側空気吸込用開口部、1dは右側面側空気吸込用開口部、4は送風ファン、6はベルマウス、6aは空気吸込口、7は断面コの字形の熱交換器、7aは左側面側熱交換器部、7bは後面側熱交換器部、7dは右側面側熱交換器部である。
[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a structure of an outdoor unit of an air conditioner with improved ventilation performance.
[0002]
[Prior art]
Conventionally, as an outdoor unit of an air conditioner, for example, there is a blower unit including a blower fan and a fan casing at an upper portion, and a heat exchanger having a U-shaped horizontal sectional shape at a lower portion and a heat exchanger having a U-shaped horizontal sectional shape. There is a so-called top-blowing type outdoor unit having a main unit consisting of a control box on a surface side facing an exchanger (hereinafter simply referred to as a heat exchanger having a U-shaped cross section) and an outdoor unit main body casing for accommodating them. .
[0003]
In this case, the horizontal cross section of the lower-side main casing that houses the heat exchanger and the control box having the U-shaped cross section is, for example, rectangular. The arrangement of the heat exchanger and the blower fan having a U-shaped cross section with respect to the main body casing and the round surface (cross-sectional shape) of the bell mouth portion formed inside the fan casing improve the air volume characteristics when the blower fan rotates. For the purpose of, for example, disposing the main body (main heat exchanger) of the heat exchanger having the U-shaped cross section and the control box side on the mutually opposed short sides of the main body casing, The blower fan and the fan casing are arranged so as to be deviated toward the control box side from the heat exchanger side having the U-shaped cross section, and the radius of the round surface of the bell mouth portion in the fan casing is adjusted to the suction flow. (See, for example, Patent Document 1).
[0004]
In such an outdoor unit, when the blower fan rotates, air outside the unit is introduced from the outside air inlet of the main body casing, and the bell mouth portion is changed after the heat is exchanged by the heat exchanger having the U-shaped cross section. When the air flows into the blower fan, the radius of the round surface of the bell mouth part on the heat exchanger side where air is introduced from outside is formed larger than that of the control box side where air is not introduced from outside. The resistance to the air flowing along the fan axis direction on the side of the fan becomes smaller, and the amount of air flowing into the blower fan from the heat exchanger side of the bell mouth part increases. In addition, since the air flowing from the heat exchanger side to the control box side does not follow the fan axis direction and flows obliquely to the round surface of the bell mouth portion and flows in, the round surface of the bell mouth portion is formed. Even if the radius is small, the radius of curvature of the streamline of air becomes large. For this reason, the radius of curvature of the streamline of the air on the round surface at the entrance of the bell mouth portion is less likely to fluctuate at a position in the circumferential direction. As a result, the amount of air flowing in the air increases as a whole, and the airflow characteristics can be improved.
[0005]
[Patent Document 1]
JP-A-2002-221341 (pages 1 to 4, FIGS. 1 and 3)
[0006]
[Problems to be solved by the invention]
By the way, recently, from the viewpoint of emphasizing energy saving performance, improvement of the energy saving performance of the outdoor unit for an air conditioner as described above is also required. At the same time, there is a strong demand for downsizing the equipment because it is necessary to reduce the restrictions on the installation space and to improve the transportability.
[0007]
In the case of the outdoor unit for the air conditioner, to improve the energy saving performance while responding to the above demand for compactness of the equipment, the heat exchanger of the heat exchanger should be used as effectively as possible within the limited body space. It is necessary to increase the exchange area and to prevent air drift from the air inlet to the air outlet as effectively as possible, thereby maximizing the blowing performance and heat exchange capacity.
[0008]
Therefore, in an upper-blowing outdoor unit using a heat exchanger having a U-shaped cross section as in the above-described conventional example, in order to achieve both the improvement of the energy saving performance and the demand for downsizing of the equipment, for example, The heat exchange performance is improved by arranging the main body (main heat exchanger) of the U-shaped heat exchanger on the long side of the rectangular main body casing capable of securing a sufficiently large heat exchange area. In order to improve the pressure loss and reduce the blowing noise, and to increase the air volume, the outer diameter of the impeller of the blowing fan is maximized, for example, about 85% or more of the short side width of the rectangular main body casing. It is conceivable to have a large diameter.
[0009]
However, in such a case, the round surface structure of the bell mouth 6 having a large difference in radius as described above cannot be adopted due to the restrictions on the outer diameter of the fan impeller and the dimensions of the fan casing. That is, by changing the radius of the radius surface of the bellmouth portion from axisymmetric to non-axisymmetric as described above, it becomes impossible to improve the air volume characteristics.
[0010]
On the other hand, according to the present invention, as described above, the main heat exchange surface of the heat exchanger having a U-shaped cross section is installed so as to correspond to the long side opening of the rectangular main body casing as described above. The heat exchange surface is formed as wide as possible to improve the heat exchange performance and reduce the blowing noise, and to increase the air volume, the outer diameter of the blowing fan is set to the short side of the main casing. Even in the case of the maximum diameter allowed from the above, the curvature radius of the air suction port side cross section of the bell mouth is adjusted to the blower fan so as to appropriately cope with the suction airflow of the blower fan that changes in the circumferential direction. The shape of the heat exchanger with a U-shaped cross section on the upstream side is made non-axisymmetric, so that it is possible to effectively improve the air volume characteristics while improving the energy saving performance and the demand for compact equipment. Air conditioning It is an object to provide the outdoor unit of the machine.
[0011]
[Means for Solving the Problems]
The present invention has the following problem solving means in order to achieve the above object.
[0012]
(1) First problem solving means (the invention of claim 1)
An outdoor unit of an air conditioner according to a first means for solving the problem of the present invention comprises an outdoor unit main body casing 1A having a rectangular horizontal cross section, a rear long side portion and left and right sides of the outdoor unit main body casing 1A. The air suction openings 1b, 1a, and 1d, which are located on the three short sides and extend from the bottom to the top and have a U-shaped horizontal cross section, and the air suction openings 1b, 1a, and 1d. The corresponding horizontal cross-sectional shape is located at the upper part of the U-shaped heat exchanger 7 and the outdoor unit main body casing 1A, and the horizontal cross-sectional shape changes from rectangular to circular from the lower part to the upper part. Fan casing 1B, a bell mouth 6 provided inside the circular portion of the fan casing 1B, and a bell mouth 6 provided in the fan casing 1B corresponding to the bell mouth 6, and the horizontal cross-sectional shape is a U-shape. A blower fan that blows air sucked in from the rear side and both left and right sides of the outdoor unit main body casing 1A through the air intake openings 1b, 1a, 1d through the heat exchanger 7 having a U-shaped horizontal cross section. In the outdoor unit of an air conditioner comprising: 4, the outer diameter of the circular portion of the fan casing 1B having the bell mouth 6 is increased to a diameter substantially equal to the width of the short side of the main body casing 1A. Thereby, the outer diameter of the impeller of the blower fan 4 installed is made as large as possible, while the radius of curvature R of the cross section of the bell mouth 6 on the side of the air suction port 6a is changed to the shape on the heat exchanger 7 side. It is characterized in that it is set to a corresponding non-axisymmetric value.
[0013]
Therefore, in such a configuration, as described above, the main heat exchange surface of the heat exchanger 7 having the U-shaped cross section is formed by opening the long side opening of the main body casing 1A having the rectangular horizontal cross section as described above. 1b, the heat exchange surface is formed as wide as possible to improve the heat exchange performance, reduce the blowing noise, and increase the outer diameter φ of the blower fan 4 to increase the air volume. Is expanded from the short side portion dimension La of the main body casing 1A to the maximum allowable diameter so that it can appropriately cope with the suction airflow of the blower fan 4 that changes in the circumferential direction (rotation direction). The radius of curvature R of the cross section of the bell mouth 6 on the side of the air suction port 6a is made to be non-axisymmetric in accordance with the shape of the heat exchanger 7 having a U-shaped cross section on the upstream side of the blower fan 4. So the fan impeller Without being restricted by the size of the outer diameter and the fan casing, while both the requirements of improvement and equipment compact energy-saving performance, so that it is possible to effectively improve the air flow characteristics.
[0014]
(2) Second Problem Solving Means (Invention of Claim 2)
An outdoor unit of an air conditioner according to a second means for solving the problem of the present invention is based on the configuration of the first means for solving the problems, and the heat exchanger 7 having a U-shaped horizontal cross section is provided on the left and right sides. Either one of the two-sided heat exchanger portions 7a and 7d has a corner angle θ 1 of approximately 90 ° with respect to the rear-side heat exchanger portion 7b, and the other side has a corner angle θ 2 larger than the predetermined angle by 90 ° or more. It is characterized in that it is formed to have.
[0015]
According to such a configuration, when installing the outdoor unit, the outdoor unit can be installed with the heat exchanger portion (7a or 7d) on one of the left and right sides having a large corner angle θ in contact with the wall surface. Even when two units are arranged side by side, a sufficient air suction space can be secured between the wall surface and the adjacent outdoor unit, and on either side of the left and right both-side heat exchanger section, Can be effectively aerated.
[0016]
(3) Third Problem Solving Means (Invention of Claim 3)
The outdoor unit of the air conditioner according to the third problem solving means of the present invention is based on the configuration of the first or second problem solving means, and the impeller of the blower fan 4 has an outdoor unit main body casing 1A. And has a maximum outer diameter φ up to the short side width limit, and is provided so as to cross over to the upper part of the heat exchanger 7.
[0017]
With this configuration, the size of the outdoor unit unit body can be made as compact as possible, and the amount of air to be blown can be maximized.
[0018]
(4) Fourth Problem Solving Means (Invention of Claim 4)
An outdoor unit for an air conditioner according to a fourth aspect of the present invention is based on the configuration of the first, second or third aspect of the present invention, and has a heat exchanger having a U-shaped horizontal cross section. A control box 8 is provided on the long side of the front side of the outdoor unit main body casing 1A facing the container 7, and the bell mouth 6 has a curvature radius R of a cross section on the side of the air suction port 6a. Is set to a non-axisymmetric value corresponding to
[0019]
The curvature of the airflow flowing on the opposite surface side where the heat exchanger 7 having a U-shaped horizontal cross section does not exist is of course gentle, but if there is an obstacle such as a control box, it naturally depends on its position. As a result, partial pressure loss occurs, and drift occurs.
[0020]
Therefore, in order to truly equalize the air suction flow rate in the bell mouth circumferential direction, those circumstances must be considered.
[0021]
In order to determine the curvature R of the cross section of the bell mouth 6 on the side of the air suction port 6a as described above, the position of the control box 8 is also taken into consideration.
[0022]
(5) Fifth problem solving means (invention of claim 5)
The outdoor unit of the air conditioner according to the fifth problem solving means of the present invention is based on the configuration of the fourth problem solving means, and the control box 8 is provided on the front side long side of the outdoor unit main body casing 1A. If the bell mouth 6 on the side of the deflected portion without the control box 8 has a radius of curvature Rac of the cross section on the air suction port 6a side where the control box 8 is not deviated, the radius of curvature Rac is the opposite. It is characterized in that the control box 8 on the side is formed to be larger than the radius of curvature Rcd of the section on the side of the air inlet 6a of the bell mouth 6 on the side of the eccentric part.
[0023]
As described above, in the configuration of the outdoor unit in which the control box 8 is provided on the long side of the facing side of the heat exchanger having the U-shaped horizontal cross-sectional shape, the position of the control box 8 is changed to, for example, one of the left and right directions. If it is made to approach the side corner, the airflow resistance in the region where the control box 8 has disappeared due to the deviation is eliminated, and the intake performance thereof can be improved.
[0024]
On the other hand, in such a case, the air flow in the area where the control box 8 is provided is deteriorated due to the deviation.
[0025]
Accordingly, in order to improve this, the radius of curvature R of the deviated region where the control box 8 is eliminated is slightly increased, while the radius of curvature of the deflected region where the control box 8 is present is increased. By making the control box 8 slightly smaller, it is possible to effectively prevent a decrease in the air blowing performance due to a change in the installation position of the control box 8.
[0026]
【The invention's effect】
As a result, according to the outdoor unit of the air conditioner of the present invention, it is possible to improve the blowing performance of the outdoor unit as much as possible while reducing the size of the main body of the device. Sound can be reduced as effectively as possible. At the same time, the fan input can be reduced.
[0027]
BEST MODE FOR CARRYING OUT THE INVENTION
(Embodiment 1)
1 to 3 show a configuration of an outdoor unit of an air conditioner according to Embodiment 1 of the present invention.
[0028]
First, FIG. 1 and FIG. 2 show the basic configuration, and reference numeral 1 in the figure denotes the outdoor unit. The outdoor unit 1 includes a lower body casing 1A in which the heat exchanger 7 and various devices are installed, and an upper fan casing 1B in which the blower fan 4 is installed. In terms of structure, the lower side main body casing 1A, which is the center, for example, is viewed from the left side to the right side in the planar display state of FIG. 2, so that the upper side of the paper is the left side, the lower side is the right side, and the lower side is the right side. Assuming that the left side is the front side and the right side is the rear side, the horizontal cross-sectional shape is a rectangular shape having a predetermined length in the left-right direction as a whole, a short predetermined length in the front-rear direction, and a predetermined height in the vertical direction ( (Bottomed square tube).
[0029]
That is, assuming that the dimension in the front-rear direction is La and the dimension in the left-right direction is Lb in the planar state of the main body casing 1A, the relationship between the dimensions La and Lb is La <Lb. The lower casing 1A is subjected to necessary processing at necessary locations, for example, a first air suction opening 1b is provided on substantially the entire rear side, and approximately 2/3 of the left and right sides of the rear side. Portions are provided with second and third air suction openings 1a and 1d, and a maintenance opening 1c is provided on the front side. The first, second, and third air suction openings 1b, 1a, and 1d have a U-shaped horizontal cross-sectional shape as a whole (hereinafter, simply referred to as a U-shaped cross-section).
[0030]
The rear side first air suction opening 1b and the left and right both side second and third air suction openings 1a, 1d, which have a U-shaped cross section as a whole, have the above-described A heat exchanger having a U-shaped horizontal cross-section (hereinafter, simply referred to as a U-shaped cross-section) installed in the main body casing 1A so as to extend from above the bottom plate portion 1f to the boundary 2 with the upper fan casing 1B. The heat exchange surfaces of the second and third heat exchanger portions 7b, 7a and 7d on the rear side, which are the main heat exchanger portions of the first and second, and left and right side heat exchanger portions which are the secondary heat exchanger portions are exposed. . The heat exchanger 7 is composed of, for example, a plate fin type air heat exchanger in which the heat exchanger portions 7b, 7a, 7d are integrated with each other, and the second air suction opening on the left side. The left side second heat exchanger portion 7a corresponding to the rear side first heat exchanger portion 7b corresponding to the rear side first air suction opening 1b is a corner angle of the main body casing 1A ( 90 °) to have been bent at an angle of the corresponding corner angle theta 1 = approximately 90 °, while the third heat exchanger unit 7d corresponding to the third air intake opening portion 1d is the same front side The first heat exchanger section 7b is bent outward at a large angle of corner angle θ 2 = 100 ° to 110 °. Thereby, even when the right side of the outdoor unit 1 is installed with the right side in contact with the wall or the two units are installed in contact with each other, an effective air suction space SP can be provided between them. ing. On the other hand, an opening / closing door is provided in the maintenance opening 1c.
[0031]
Above the front side of the bottom plate portion 1f in the main body casing 1A, for example, as shown, an equipment room and a service space 3A where a compressor and the like are installed are provided. At the upper part of the space 3A where the wind is easy to pass and the cooling effect is high, a control box 8 having a predetermined depth and a predetermined width and extending in the left and right direction at the center part on the front side in the left and right direction is provided with the maintenance opening 1c. It is installed with a good space factor so that inspection operation can be easily performed from the outside on the front side via the front.
[0032]
Then, as described above, the heat exchanger 7 having a U-shaped cross section having the same long side portion and short side portion over the three directions of the rear surface side (long side portion side) and the left and right both side sides (short side portion side). The heat exchanger 7 (long side 7b, short side 7a, short side 7d) having the U-shaped cross section and the various devices are provided on the upper part of the main body casing 1A, for example, as shown in FIG. In such a state, the upper fan casing 1B is integrally provided by, for example, a method such as fitting, and a propeller fan or the like is provided on a fan installation portion 3B in the fan casing 1B via a predetermined fan support means. The axial-flow type blower fan 4 extends vertically. Reference numeral 4a in the figure denotes a hub of the blower fan 4, 4b denotes a blade, 5a denotes a fan motor, and 5a denotes a rotation drive shaft of the fan motor.
[0033]
In the case of this embodiment, as described above, the main body casing 1A having a rectangular cross section in which the heat exchanger 7 and various devices are installed and the fan casing 1B in which the blower fan 4 is installed are substantially fan motors. The fan casing 1B is divided into a lower part and an upper part based on five parts. The horizontal cross-sectional shape of the fan casing 1B changes from a rectangular shape to a circular shape from the lower part to the upper part. And the fan installation part 3B is formed in the upper side cylindrical part. A bell mouth 6 is provided inside the upper portion of the cylindrical portion of the fan casing 1B. The blower fan 4 is provided with its impeller portion corresponding to the bell mouth 6.
[0034]
In this case, the outer diameter of the cylindrical portion of the fan casing 1B having the bell mouth 6 is increased to a diameter equivalent to the width La of the short side of the main body casing 1A, whereby the installed blower fan 4B is formed. By making the outer diameter φ of the impeller as large as possible, the impeller of the blower fan 4 is positioned above the upper end surface of the heat exchanger 7 having the U-shaped cross section. As shown in the figure, the heat exchanger 7 having a U-shaped cross section is installed in a crossover state where the heat exchanger 7 vertically overlaps with the upper end. In addition, thereby, it is possible to adopt an impeller having a diameter as large as possible so as to sufficiently improve the air blowing performance, but also to effectively reduce the size and size of the main unit of the outdoor unit. ing.
[0035]
In this case, the bell mouth 6 has a constant radius of curvature R in the cross section on the side of the air outlet 6b over the entire circumference in the impeller rotation direction (bell mouth circumferential direction). The radius of curvature R of the cross section at the side 6a is formed to have a different radius of curvature according to the difference in the angle of entry of air into the bell mouth 6 portion.
[0036]
That is, as shown in FIG. 3, for example, the radius of curvature R of the same portion is obtained by dividing the bell mouth 6 into two equal parts at each intermediate portion in both the front-rear direction and the left-right direction of the lower body casing 1A. It is divided into four areas in the diagonal direction. The radius of curvature Ra of the intermediate point on the side of the second heat exchanger 7a (left side), which is the short side, of the four intermediate points obtained by dividing each side into two equal parts is the maximum radius of curvature of the whole. (Max), the radius of curvature Rb at the midpoint of the rear-side first heat exchanger portion (the main heat exchanger portion having the largest heat exchange area) 7b, which is the long side portion, and the long side portion as well. The radius of curvature Rc at an intermediate point of the front-side control box 8 is formed to be the minimum radius of curvature (min) of the whole, and further, the third heat exchanger portion 7d side (right side) which is a short side portion The radius of curvature Rd of the intermediate point is formed into a radius of curvature (mid) having an intermediate value between the maximum (max) and the minimum (min), and the radii of curvature Rab (between Ra and Rb) of the above four regions therebetween are defined by: Rac (between Ra and Rc), Rbd (between Rb and Rd), Rcd (with Rc and Rc) The distance between the intermediate points of the maximum radii Ra (max) and the intermediate radii Rd (mid) having large curvature radii and the intermediate points of the minimum radii Rb (min) and Rc (min) become gradually smaller. The whole is formed to have a smooth radius of curvature.
[0037]
Therefore, in this case, the radius of curvature of the air inlet opening side surface of the bell mouth portion is changed from axisymmetric to non-symmetrical without being restricted by the outer diameter of the fan impeller and the dimensions of the fan casing. It can be changed to be axially symmetric, and the air volume characteristics can be improved.
[0038]
Moreover, in that case, the heat exchanger 7 of the shaped of the cross-section U-(7b, 7a, 7d) of curvature radius variation average value of the radius of curvature of the region Rab and Rbd R 1 opposite the side (control box 8 side) the average value R 2 of the curvature radius of the curvature radius change region Rac and Rcd, are formed such that the relationship R 1> R 2. That is, the rate of change of the radius of curvature R on the side of the heat exchanger 7 having a U-shaped cross section is smaller than the rate of change of the radius of curvature of the non-air inlet region without the heat exchanger 7 having the same shape. Have been.
[0039]
As a result, the amount of air supplied to the air outlet 6b of the bell mouth 6 during one rotation of the impeller of the blower fan 4 is made as uniform as possible over the entire circumference, and the air volume characteristics and air blowing performance are improved. As a result, the blowing sound can be effectively reduced under the same blowing amount, and the input to the blowing fan 4 can be reduced.
[0040]
(Embodiment 2)
Next, FIG. 4 shows a configuration of an outdoor unit of an air conditioner according to Embodiment 2 of the present invention.
[0041]
The outdoor unit of the air conditioner of this embodiment has the same structure as that of the outdoor unit of Embodiment 1 shown in FIGS. , the corner angle of the heat exchanger 7 of the cross section U-shaped (song angularity) theta 2 is large third heat exchanger unit 7d surface, i.e. by lapping on the right side corner portions, the front-side equipment room In addition, the intake performance in the maintenance space 3A side region is improved.
[0042]
On the other hand, if it does so, the air circulation of the Rcd area among the above-mentioned four areas Rab, Rbd, Rac, and Rcd will deteriorate.
[0043]
Therefore, in order to cope with this and to improve the latter problem, the radius of curvature R of the Rac region is slightly increased while the radius of curvature R of the Rcd region is slightly decreased (Rac> Rcd). It is arranged to prevent a decrease in the air blowing performance due to a change in the installation position of the box 8.
[0044]
The configuration and operation of the other parts are all the same as those of the first embodiment, and have the same operation and effect.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating the overall configuration of an outdoor unit of an air conditioner according to Embodiment 1 of the present invention in the vertical direction.
FIG. 2 is a plan view showing a configuration of the outdoor unit in a plane direction.
FIG. 3 is a plan view showing a configuration of a main part of the outdoor unit.
FIG. 4 is a plan view showing a configuration of a main part of an outdoor unit of an air conditioner according to Embodiment 2 of the present invention, similar to FIG.
[Explanation of symbols]
1 is an outdoor unit, 1A is a main body casing, 1B is a fan casing, 1a is a left side air intake opening, 1b is a rear side air intake opening, 1d is a right side air intake opening. Blower fan, 6 is a bell mouth, 6a is an air inlet, 7 is a U-shaped heat exchanger, 7a is a left side heat exchanger, 7b is a rear side heat exchanger, and 7d is a right side heat. It is an exchange part.

Claims (5)

水平断面形状が長方形状をなす室外機本体ケーシング(1A)と、該室外機本体ケーシング(1A)の後面側長辺部および左右両面側短辺部の3面に位置して、その底部から上部まで伸びる水平断面形状がコの字形の空気吸込用開口部(1b),(1a),(1d)と、該空気吸込用開口部(1b),(1a),(1d)に対応して設けられた水平断面形状がコの字形の熱交換器(7)と、上記室外機本体ケーシング(1A)の上部に位置し、下部から上方に向けて、その水平断面形状が長方形状から円形に変化するファンケーシング(1B)と、該ファンケーシング(1B)の円形部内側に設けられたベルマウス(6)と、上記ファンケーシング(1B)内の上記ベルマウス(6)に対応して設けられ、上記水平断面形状がコの字形の空気吸込用開口部(1b),(1a),(1d)を介して上記室外機本体ケーシング(1A)の後面側および左右両面側から吸い込んだ空気を上記水平断面形状がコの字形の熱交換器(7)を通して上方に吹き出す送風ファン(4)とを備えてなる空気調和機の室外機ユニットにおいて、上記ベルマウス(6)を有する上記ファンケーシング(1B)円形部の外径を上記本体ケーシング(1A)の短辺部の幅と略同等の径まで拡大することによって、上記設置される送風ファン(4)の羽根車の外径を可及的に大きくする一方、上記ベルマウス(6)の空気吸込口(6a)側断面の曲率半径Rを、上記熱交換器(7)側の形状に対応した非軸対称の値に設定したことを特徴とする空気調和機の室外機ユニット。An outdoor unit main body casing (1A) having a rectangular horizontal cross-sectional shape, and located on three surfaces of a rear side long side portion and left and right both side short side portions of the outdoor unit main body casing (1A), and are arranged from the bottom to the top. The air suction openings (1b), (1a), and (1d) having a U-shaped horizontal cross-section extending to the air suction openings (1b), (1a), and (1d) are provided. The horizontal cross-sectional shape is located at the upper part of the U-shaped heat exchanger (7A) and the outdoor unit main body casing (1A), and the horizontal cross-sectional shape changes from a rectangular shape to a circular shape from the lower portion to the upper portion. A fan casing (1B), a bell mouth (6) provided inside the circular portion of the fan casing (1B), and a bell mouth (6) provided in the fan casing (1B). The air whose horizontal cross section is U-shaped The heat exchanger having the U-shaped horizontal cross section is configured to take in the air sucked from the rear side and the left and right sides of the outdoor unit main body casing (1A) through the inlet openings (1b), (1a) and (1d). (7) In an outdoor unit of an air conditioner comprising a blower fan (4) that blows upward through (7), the outer diameter of a circular portion of the fan casing (1B) having the bell mouth (6) is determined by changing the outer diameter of the main body casing ( 1A), the outer diameter of the impeller of the blower fan (4) to be installed is increased as much as possible by enlarging the outer diameter of the bell mouth (6). An outdoor unit for an air conditioner, wherein a radius of curvature R of a cross section on the side of the air inlet (6a) is set to a non-axisymmetric value corresponding to the shape on the side of the heat exchanger (7). 水平断面形状がコの字形の熱交換器(7)は、その左右両面側熱交換器部(7a),(7d)の何れか一方側が後面側熱交換器部(7b)に対して略90°のコーナ角(θ)、他方側が同90°よりも所定角度以上に大きいコーナ角(θ)を有して形成されていることを特徴とする請求項1記載の空気調和機の室外機ユニット。In the heat exchanger (7) having a U-shaped horizontal cross section, one of the left and right both-side heat exchanger portions (7a) and (7d) is approximately 90 ° with respect to the rear-side heat exchanger portion (7b). 2. The outdoor of an air conditioner according to claim 1, wherein the corner is formed so as to have a corner angle (θ 1 ) of 0 ° and a corner angle (θ 2 ) of which the other side is larger than 90 ° by a predetermined angle or more. Machine unit. 送風ファン(4)の羽根車は、室外機本体ケーシング(1A)の短辺部幅限界までの最大外径(φ)を有し、熱交換器(7)の上方部までクロスオーバーした状態に設けられていることを特徴とする請求項1又は2記載の空気調和機の室外機ユニット。The impeller of the blower fan (4) has a maximum outer diameter (φ) up to the short side width limit of the outdoor unit main body casing (1A), and crosses over to the upper part of the heat exchanger (7). The outdoor unit of an air conditioner according to claim 1, wherein the outdoor unit is provided. 水平断面形状がコの字形の熱交換器(7)と対向対面する室外機本体ケーシング(1A)の前面側長辺部には制御ボックス(8)があり、上記ベルマウス(6)は、その空気吸込口(6a)側断面の曲率半径(R)が、当該制御ボックス(8)の位置にも対応した非軸対称な値に設定されていることを特徴とする請求項1,2又は3記載の空気調和機の室外機ユニット。A control box (8) is provided on the long side of the front side of the outdoor unit main body casing (1A) facing the heat exchanger (7) having a U-shaped horizontal cross section, and the bell mouth (6) is provided with the control box (8). 4. A non-axisymmetric value corresponding to a position of the control box (8), wherein a radius of curvature (R) of a cross section on a side of the air inlet (6a) is set. An outdoor unit of the air conditioner according to the above. 制御ボックス(8)が室外機本体ケーシング(1A)の前面側長辺部の中間点位置よりも左右いずれか一方側に偏位して配置されている場合、制御ボックス(8)がない被偏位部側のベルマウス(6)の空気吸込口(6a)側断面の曲率半径(Rac)は、その反対側の制御ボックス(8)がある偏位部側ベルマウス(6)の空気吸込口(6a)側断面の曲率半径(Rcd)よりも大きく形成されていることを特徴とする請求項3記載の空気調和機の室外機ユニット。When the control box (8) is disposed so as to be deviated to one of the right and left sides from the midpoint position of the long side portion on the front side of the outdoor unit main body casing (1A), the control box (8) is not biased. The radius of curvature (Rac) of the section of the bell mouth (6) on the side of the bell mouth (6) on the side of the eccentric part is the air inlet of the bell mouth (6) on the side of the eccentric part where the control box (8) on the opposite side is located. (6a) The outdoor unit of an air conditioner according to claim 3, wherein the unit is formed to have a radius of curvature (Rcd) larger than a side cross section.
JP2002324616A 2002-11-08 2002-11-08 Air conditioner outdoor unit Expired - Fee Related JP3742891B2 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006038287A (en) * 2004-07-23 2006-02-09 Daikin Ind Ltd Outdoor machine unit for air conditioner
JP2006077585A (en) * 2004-09-07 2006-03-23 Mitsubishi Electric Corp Blower and air-conditioner
WO2013047721A1 (en) 2011-09-29 2013-04-04 ダイキン工業株式会社 Outdoor unit for air conditioning device
CN103912926A (en) * 2012-12-28 2014-07-09 松下电器产业株式会社 Outdoor unit
US9273896B2 (en) 2011-05-20 2016-03-01 Daikin Industries, Ltd. Outdoor unit of refrigerating apparatus
WO2016051607A1 (en) * 2014-10-03 2016-04-07 三菱電機株式会社 Refrigeration cycle device

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JP5791276B2 (en) * 2010-12-24 2015-10-07 三菱電機株式会社 Blower, outdoor unit and refrigeration cycle apparatus

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JP2002221341A (en) * 2001-01-24 2002-08-09 Daikin Ind Ltd Outdoor unit for air conditioner

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JPH06331178A (en) * 1993-05-25 1994-11-29 Toshiba Ave Corp Outdoor device
JP2002221341A (en) * 2001-01-24 2002-08-09 Daikin Ind Ltd Outdoor unit for air conditioner

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006038287A (en) * 2004-07-23 2006-02-09 Daikin Ind Ltd Outdoor machine unit for air conditioner
JP4639683B2 (en) * 2004-07-23 2011-02-23 ダイキン工業株式会社 Outdoor unit for air conditioner
JP2006077585A (en) * 2004-09-07 2006-03-23 Mitsubishi Electric Corp Blower and air-conditioner
JP4690682B2 (en) * 2004-09-07 2011-06-01 三菱電機株式会社 air conditioner
US9273896B2 (en) 2011-05-20 2016-03-01 Daikin Industries, Ltd. Outdoor unit of refrigerating apparatus
WO2013047721A1 (en) 2011-09-29 2013-04-04 ダイキン工業株式会社 Outdoor unit for air conditioning device
US9228771B2 (en) 2011-09-29 2016-01-05 Daikin Industries, Ltd. Outdoor unit for air conditioning device
CN103912926A (en) * 2012-12-28 2014-07-09 松下电器产业株式会社 Outdoor unit
WO2016051607A1 (en) * 2014-10-03 2016-04-07 三菱電機株式会社 Refrigeration cycle device
JPWO2016051607A1 (en) * 2014-10-03 2017-04-27 三菱電機株式会社 Refrigeration cycle equipment

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