JP3758592B2

JP3758592B2 - Recessed ceiling air conditioner

Info

Publication number: JP3758592B2
Application number: JP2002090453A
Authority: JP
Inventors: 尚史池田; 章弘松下; 敦史枝吉; 英治福島; 誠司井上
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2002-03-28
Filing date: 2002-03-28
Publication date: 2006-03-22
Anticipated expiration: 2022-03-28
Also published as: JP2003287239A

Description

【０００１】
【発明の属する技術分野】
本発明は、天井埋込形空気調和機に係り、特に熱交換器の向上、低騒音化、コンパクト化を図ることに関するものである。
【０００２】
【従来の技術】
図２１、図２２、図２３は、従来の天井埋込形空気調和機の一例を示し、図２１は従来の天井埋込形空気調和機を部屋から見た取付外観図、図２２は図２１の天井埋込形空気調和機の縦断面図、図２３は図２２の天井埋込形空気調和機の水平断面図である。
図２１、図２２のように、天井裏に埋設された直方体状の空気調和機本体１０１の下部には長方形の化粧パネル１０２が取り付けられ部屋へ面している。化粧パネル１０２の中央付近には空気調和機本体１０１への空気の吸込口である格子状の吸込グリル１０２ｂと、化粧パネル１０２の各辺に沿って形成された長方形状の吹出口１０２ａを４つ有し、さらに各吹出口１０２ａには１枚づつ上下方向風向ベーン１０２ｃを備えて、４方向吹出し天井埋込形空気調和機を成している。
また図２２、図２３のように、空気調和機本体１０１の内部には、ターボファン１０３、ターボファン１０３を駆動するためのモータ１０４、ベルマウス１０５、またターボファン１０３の周りには、空気調和機本体側板１０１ｃと平行部をもつ長方形状の熱交換器１０６が立設され、熱交換器１０６の端部はヘッダー１０８と分配器１０９で配管接続されヘッダー壁１１１で吹出風路１１６と分離される。
【０００３】
さらに熱交換器１０６の下部には凝縮水であるドレン水を受け止めるドレンパン１１２、ドレンパン１１２に貯水したドレン水を機外に排出するドレンポンプ１１７、モータ１０４の運転や上下方向風向ベーン１０２ｃの角度を制御する制御基板を収納する電気品箱１１３などが配設される。
また、ターボファン１０３は、モータ１０４の回転軸を固定するハブ１０３ｃと一体に形成された主板１０３ｂに、回転方向Ａに対し逆向きの後ろ向き羽根１０３ａが取り付けられ、主板１０３ｂに対向して羽根１０３ａへの空気の案内流路を形成する漏斗状のシュラウド１０３ｄにより構成されターボファン全体が回転して空気を吹き出す。
運転時、図２１〜図２３のように、モータ１０４に駆動され矢印Ａ方向に回転するターボファン１０３によって、部屋１１５の空気が吸込グリル１０２ｂから吸い込まれ、フィルタ１１４でホコリ等を除去された後、ベルマウス１０５を通り、ターボファン１０３に吸い込まれる。その後、ターボファン１０３から吹き出された空気は熱交換器１０６により加熱、または冷却され、吹出口１０２ａから上下方向風向ベーン１０２ｃにより風向を変更されながら、部屋１１５へ吹出され空調する。
【０００４】
また、従来の天井埋込形空気調和機の別の例として、図２４は天井埋込形空気調和機の部屋から見た据付外観図、図２５は図２４の縦断面図、図２６は図２５の水平断面図を示す。
図２４、図２５のように、天井裏に埋設された直方体の空気調和機本体１０１の下部には長方形の化粧パネル１０２が取り付けられ部屋１１５へ面している。
この空気調和機は、長方形状の化粧パネル１０２の各長辺１０２ｄにのみに沿って長方形状の吹出口１０２ａがそれぞれ一つ合計二つ形成され、また各吹出口１０２ａには１枚づつ上下方向風向ベーン１０２ｃを有し、さらに長方形状の化粧パネル１０２の各吹出口１０２ａに挟まれた内側を吸込風路１１９とし、前記吸込風路１１９を覆うように吸込パネル１０２ｉが取り付けられ、前記吹出口１０２ａと吸込パネル１０２ｉの間の長方形の開口部二つのみを吸込口１０２ｂとし、ファンとして多翼ファン１２０を用いている２方向吹出し天井埋込形空気調和機である。
また図２５、図２６において、天井裏に埋設された空気調和機本体１０１の内部には、空気調和機本体１０１の長辺方向に延設されている平板状の一対の熱交換器１０６と、熱交換器下部には熱交換器１０６で生じたドレン水を貯排水するためのドレンパン１１２を有し、さらに前記一対の熱交換器１０６の間には、円盤状の主板１２０ａと前記主板の両側のリング状の側板１２０ｂに多数の羽根１２０ｃを取付角度が羽根車の回転方向に傾斜するように取り付けて形成されている羽根車１２０ｄを、側板側に開口する吸込ベルマウス１２０ｅと天板側へ開口する一つの吹出口１２０ｆとを備えたケーシング１２０ｇに内装された多翼ファン１２０が天板に固定され、かつ多翼ファン１２０の吸込側、吹出し側風路を風路分割板１２１で仕切っている。
【０００５】
以上のように構成されていることにより、多翼ファン１２０の羽根車１２０ｄがモータ１０４により駆動され回転すると、部屋１１５内の空気は化粧パネル１０２の長方形状の二つの吸込口１０２ｂから吸込風路１１９を通り、多翼ファンの吸込ベルマウス１２０ｅに吸い込まれる。その後、多翼ファンの羽根車１２０ｄによって多翼ファンの吹出口１２０ｆから天板１０１ｄに向け吹き出された空気は、矢印のように前記天板１０１ｄに衝突しながら分流し、それぞれの熱交換器１０６を通過し熱交換される。
そして、ドレンパン１１２、側板１０１ａで構成される吹出風路１１６を通過し、化粧パネル１０２の吹出口１０２ａから部屋１１５内へ吹き出され空調される。
【０００６】
また、従来の天井埋込形空気調和機のさらに別の例として、図２７の特許第３１３８６３２号公報に示されたものはターボファンを用いた２方向吹出し天井埋込形空気調和機の水平断面図を示している。図において、直方体形状の空気調和機本体１０１と空気調和機本体下部に長方形状の化粧パネル１０２が配設され、前記化粧パネル１０２の各長辺側のみに沿った長方形状の吹出口１０２ａを各一つ合計二つ有し、空気調和機本体１０１の内部には、２枚の平板状の熱交換器１０６がターボファン１０３を挟み、かつ長方形状の吹出口１０２ａに沿って立設している。また二つの長方形状の吹出口１０２ａには各１枚づつ上下方向風向ベーン１０２ｃが配設される。
【０００７】
このほかに特開２０００−４６３６０号公報には図２８に示す２方向吹出し天井埋込形空気調和機の水平断面図に示すターボファンの周囲にＵ字形の熱交換器を立設したものや、特開平１１−１４９７１１号公報に示された図２９、図３０の天井埋込形空気調和機の水平断面図のように円形または波形の熱交換器を立設したものも存在する。
【０００８】
さらに図３１、図３２、図３３は、従来の天井埋込形空気調和機の一例を示し、図３１は従来の天井埋込形空気調和機の部屋から見た取付外観図、図３２は図３１の天井埋込形空気調和機の縦断面図、図３３は図３２の水平断面図である。
図３１、図３２に示すように、天井裏に埋設された立方体状の空気調和機本体１０１の下部には正方形の化粧パネル１０２が取り付けられ部屋１１５へ面している。化粧パネル１０２の中央付近には空気調和機本体１０１への空気の吸込口である格子状の吸込グリル１０２bと、化粧パネル１０２の各辺に沿って形成された長方形状の吹出口１０２ａを４つ有し、さらに各吹出口１０２ａには１枚づつ上下方向風向ベーン１０２ｃを有する４方向吹出し天井埋込形空気調和機である。
【０００９】
また図３２、図３３のように、空気調和機本体１０１の内部には、ターボファン１０３、ターボファン１０３を駆動するためのモータ１０４、ベルマウス１０５、またターボファン１０３の周りには、空気調和機本体側板１０１ｃと平行部をもつ正方形状の熱交換器１０６が立設され、熱交換器１０６の下部には凝縮水であるドレン水を受け止めるドレンパン１１２、モータ１０４の運転や上下方向風向ベーン１０２ｃの角度を制御する制御基板を収納する電気品箱１１３などが配設される。さらにターボファン１０３は、図２２，図２３にて説明したものと同様のターボファンを用いる。
運転時、図３１〜図３３のように、モータ１０４に駆動され矢印Ａ方向に回転するターボファン１０３によって、部屋１１５の空気が吸込グリル１０２ｂから吸い込まれ、フィルタ１１４でホコリ等を除去された後、ベルマウス１０５を通り、ターボファン１０３に吸い込まれる。その後、ターボファン１０３から吹き出された空気は熱交換器１０６により加熱、または冷却され、吹出口１０２ａから上下方向風向ベーン１０２ｃにより風向を変更されながら、部屋へ吹出され室内を空調する。
【００１０】
【発明が解決しようとする課題】
従来の天井埋込形空気調和機は、上述のように構成されている。一方近年、天井埋込形空気調和機を設置する事務所やマンション等の天井裏の高さは、有効部屋容積確保のため低くなる傾向にある。そのため、４方向吹出し、２方向吹出しを問わず、天井裏の高さが低くても設置できるように、空気調和機本体の高さは小さいものが要求されている。また空気調和機本体が小さくても低騒音で熱交換性能の高い製品も要求されている。
【００１１】
従来の直方体の空気調和機本体と長方形状の化粧パネルを有する４方向吹出し天井埋込形空気調和機の場合、設置される部屋の形が細長く、狭いとき取付スペースが小さすぎて設置できない場合がある。さらに４方向吹出し天井埋込型空気調和機であれば空調された風を四方に吹き出せるため、部屋の温度ムラが生じづらいにも関わらず、図２４のように設置しようとしている部屋の照明１２２等が細長いデザインのものであるため、長方形状の化粧パネル１０２の短辺１０２ｅの寸法が大きいため、前記化粧パネル短辺１０２ｅにある吹出口１０２ａの位置が照明１１２の列を遮るように横に吹出口１０２ａが配置されてしまうと天井面の意匠性が悪いという理由で、長方形状の化粧パネル１０２ａの長辺側にのみ吹出口を有する２方向吹出し天井埋込型空気調和機を選択されるケースが多々存在する。
【００１２】
また、図２４の従来の直方体の空気調和機本体１０１と長方形状の化粧パネル１０２の各長辺１０２ｄ側にのみに長辺に沿って長方形状の吹出口１０２ａがそれぞれ一つ合計二つ形成され、多翼ファン１２０を用いている２方向吹出し天井埋込形空気調和機の場合、多翼ファン１２０には、回転時の挙動の安定性のためケーシング１２０ｇが必要で本体高さの大部分を占めるため空気調和機本体高さＨを小さくできないという問題点がある。
さらに、長方形状の化粧パネル１０２の各吹出口１０２ａに挟まれた内側を吸込風路１１９とし、前記吸込風路１１９を覆うように吸込パネル１０２ｉが取り付けられ、前記吹出口１０２ａと吸込パネル１０２ｉの間の長方形の開口部二つのみを吸込口１０２ｂとしているので、通風抵抗が高く騒音悪化してしまうという欠点があった。
【００１３】
そして、図２７の従来の特許第３１３８６３２号公報に示された直方体の空気調和機本体１０１と長方形状の化粧パネル１０２の各長辺１０２ｄ側にのみに沿って長方形状の吹出口１０２ａがそれぞれ一つ合計二つ形成され、ターボファン１０３を用いている２方向吹出し天井埋込形空気調和機の場合、多翼ファンからターボファンへ変更したことによりファンの必要高さ寸法が小さくなり、空気調和機本体高さＨは小さくできる。しかし、図２７のターボファンから熱交換器の間の矢印で示す流線図および風速分布を示す図２７（ｂ），（ｃ）のように、ファン近傍と遠方では非常に風速が異なるため、吹出口の長辺１０２ｄ方向で吹出流の温度差が生じてしまい、さらに熱交換器が大きくても風量に対する熱交換量の比率である熱交換効率が低く、十分性能が引き出せない。
【００１４】
また、図２７、図２４の従来のターボファン、多翼ファンどちらを用いた２方向吹出し天井埋込形空気調和機でも、長方形状の化粧パネル１０２の長辺１０２ｄ側各辺に一つ合計２つしか長方形状の吹出口１０２ａがなく、さらに吹出口１０２ａ一つに同一断面形状の上下方向風向ベーン１０２ｃしかないので、化粧パネル１０２の短辺方向１０２ｅには風が送風しづらく風向も変更できないので、部屋の場所により温度ムラが生じ、不快に感じる人が生じるという欠点がある。
【００１５】
そして、図３１、の従来の空気調和機本体１０１が立方体形状で、吹出口１０２ａを４つ有する４方向吹出し天井埋込型空気調和機の場合、搭載される正方形状の熱交換器１０６のターボファンの吹出口１０３ｅより離れた下方部分は熱交換器通過流速が低いため、熱交換器通過流速が高いターボファン吹出口１０３ｅ近傍に比べ熱交換量が小さく熱交換効率が悪い。
さらに、図３２のように、ターボファンの吹出口１０３ｅに対し略正方形形状の熱交換器１０６の平面部が高さ方向において同一位置であるので、前記熱交換器１０６のターボファンの吹出口１０３ｅ近傍ではターボファン１０３から吹き出された流れがほぼ同一のタイミングで熱交換器１０６へ衝突する。そのためターボファンの吹出口１０３ｅの高さ方向で同一のタイミングで圧力変動を受けてしまう。
さらに図３３のように、ターボファン１０３が回転中、熱交換器１０６の平面部→湾曲部→平面部→…平面部とターボファン１０３と熱交換器１０６の距離関係が急激に周期的に変化するため回転中にも圧力変動を受けてしまい、その結果、ターボファンの羽根１０３ａで圧力変動を受け騒音悪化してしまう。
【００１６】
そして、４方向吹出し、２方向吹出し問わず、熱交換器面積を増加させるために熱交換器全体の列数を増加すると、ターボファン１０３と熱交換器１０６が接近するとともにターボファン吹出口１０３ｅ近傍で熱交換器の通風抵抗が増加することから、騒音悪化してしまう。また熱交換器全体のフィンピッチを縮小すると、通風抵抗が増加し騒音悪化していまうという問題点がある。
【００１７】
本発明は上述のような欠点、問題点を解消するためになされたもので、低騒音、コンパクトで、熱交換性能が高く、部屋の温度ムラを小さく快適性が高い天井埋込型空気調和機を得ることを目的とする
【００１８】
【課題を解決するための手段】
第１の発明に係る天井埋込形空気調和機は、天井裏に埋設された空気調和機本体の内部にターボファンとこのターボファンを囲むように熱交換器を立設し、前記空気調和機本体の下面に吸込口および吹出口を有した化粧パネルを備えた天井埋込形空気調和機において、前記空気調和機本体の直方体形状に対応する長方形状の前記化粧パネルの長辺側に有した一対の吹出口と、前記ターボファン近傍は湾曲形状でその他部分はターボファンに沿わない「くの字形状」および「逆くの字形状」の一対がターボファンをはさむように立設した略菱形形状の熱交換器と、前記熱交換器へ冷媒を流通接続させるヘッダーおよび分配器を納めたヘッダー壁と、前記熱交換器のヘッダー壁との対向側から前記空気調和機本体の側板側へ延出した分割板と、を備え、前記略菱形形状の熱交換器の鈍角側二頂点は前記空気調和機本体の長辺側側板の中央付近になるように配設すると共に、前記分割板と前記ヘッダー壁により前記熱交換器の風下側から前記化粧パネルの一対の吹出口へ連通する吹出風路が二分され、前記熱交換器の列数は前記ターボファンから遠方部分が近傍部分より多いものである。
【００１９】
第２の発明に係る天井埋込型空気調和機は、前記熱交換器が一つの平板状をなすとともに、略菱形形状となるように湾曲または屈曲により形成したものである。
【００２２】
第３の発明に係る天井埋込形空気調和機は、天井裏に埋設された空気調和機本体の内部にターボファンとこのターボファンを囲むように熱交換器を立設し、前記空気調和機本体の下面に吸込口および吹出口を有した化粧パネルを備えた天井埋込形空気調和機において、前記熱交換器は前記ターボファンの吹出口をまたぐ位置を境に上部と下部の２つに分割して配設されると共に、前記上部熱交換器と前記ターボファンの吹出口との距離が前記下部熱交換器との距離に比べて大きくなるように配設し、前記上部熱交換器と下部熱交換器の間に前記上部熱交換器で発生するドレン水を受けるドレンパンを配設したものである。
【００２３】
第４の発明に係る天井埋込形空気調和機は、天井裏に埋設された空気調和機本体の内部にターボファンとこのターボファンを囲むように熱交換器を立設し、前記空気調和機本体の下面に吸込口および吹出口を有した化粧パネルを備えた天井埋込形空気調和機において、前記熱交換器は前記ターボファンの吹出口をまたぐ位置を境に上部と下部の２つに分割され、前記上方部分に配設される上部熱交換器の湾曲部が前記空気調和機の側板の中央付近になるように配置されると共に、前記下方部分に配設される下部熱交換器の平面部が側板に沿うように配置されたものである。
【００２４】
第５の発明に係る天井埋込形空気調和機は、前記化粧パネルの吹出口部が前記空気調和機本体の吹出風路内に突出し、前記化粧パネルの吹出口部に左右方向風向ベーンを配設したものである。
【００２５】
【発明の実施の形態】
実施の形態１．
以下、本発明の実施の形態１における天井埋込形空気調和機を図１〜図３を用いて説明する。
図１は、本発明の天井埋込形空気調和機の部屋から見た外観図、図２は図１の天井埋込形空気調和機の縦断面図、図３は図２の水平断面図を示す。
図１のように、天井裏に埋設された直方体状の空気調和機本体１の下部には長方形状の化粧パネル２が取り付けられ部屋１５へ面している。そして前記長方形状の化粧パネル２の各長辺２ｄ側にのみに、前記長辺２ｄに沿った長方形状の吹出口２ａを各一つ合計二つ有し、さらに各吹出口２ａには１枚づつ上下方向風向ベーン２ｃが配設されている。また前記長方形の吹出口２ａ二つに挟まれるように化粧パネル２の中央付近には空気調和機本体１への空気の吸込口である格子状の吸込グリル２ｂが配設される。
【００２６】
また図２、図３のように、空気調和機本体１の内部には、ターボファン３、ターボファン３を駆動するためのモータ４、吸込グリル２ｂからターボファン３への導風路を構成するベルマウス５が配設されている。また熱交換器６は、ターボファン３近傍が湾曲形状でその他部分はターボファン３に沿わない「くの字形状」の熱交換器６ａと「逆くの字形状」の熱交換器６ｂ一対がターボファン３をはさむように立設され、各熱交換器６ａ、６ｂの一端はサイドプレート７で、他端はヘッダー８・分配器９により接続され、熱交換器６全体が略菱形形状に形成されている。
さらに、前記熱交換器６の「くの字または逆くの字形状」の鈍角側二頂点６ｃ、６ｄは空気調和機本体１の長辺側側板１ａの中央付近になるように配設し、さらに前記サイドプレート７から空気調和機本体１の短辺側側板１ｂ方向へ延出した分割板１０とこの分割板とは略菱形形状の対向側に位置するヘッダー８および分配器９を納めたヘッダー壁１１により、空気調和機本体１の熱交換器６下流側から化粧パネル２の吹出口２ａへ連通する熱交換器６上流側になる吹出風路１６が二分されている。
【００２７】
そして、熱交換器６の下部には凝縮水であるドレン水を受け止めるドレンパン１２、ドレン水を機外へ排出するドレンポンプ１７、モータ４の運転や上下方向風向ベーン２ｃの角度を制御する制御基板を収納する電気品箱１３などが配設される。
また、ターボファン３は、モータ４の回転軸を固定するハブ３ｃと一体に形成された主板３ｂに、ターボファンの回転方向Ａに対し逆向きの後ろ向き羽根３ａが取り付けられ、主板３ｂに対向して羽根３ａへの空気の案内流路を形成する漏斗状のシュラウド３ｄにより構成されターボファン３全体が回転する。
運転時、図１〜図３のように、モータ４に駆動され矢印Ａ方向に回転するターボファン３によって、部屋１５の空気が吸込グリル２ｂから吸い込まれ、フィルタ１４でホコリ等を除去された後、ベルマウス５を通り、ターボファン３に吸い込まれる。その後、ターボファン３から吹き出された空気は熱交換器６により加熱、または冷却され、吹出口２ａから上下方向風向ベーン２ｃにより風向を変更されながら、部屋１５へ吹出され空調する。
【００２８】
このように、天井埋込形空気調和機を構成することにより、従来の図２６、図２７に示す平板形状の熱交換器１０６を有する天井埋込形空気調和機や、図２９のターボファンの周りに円形の熱交換器１０６を配設した従来の天井埋込形空気調和機に比べ熱交換器６の長さを拡大でき、熱交換器面積を拡大できるので、熱交換性能の向上が図れる。
【００２９】
また、従来の図２９のターボファン１０３の周りに円形の熱交換器１０６を配設したものでは、ターボファン１０３から吹き出された流れＣと熱交換器１０６のフィンの流入角度差αが全周で同一であるが、角度差αが大きく、風速が大きいため通風抵抗が大きくなってしまう。しかし図３のように、ターボファン３から吹き出された流れＣは、略菱形熱交換器６のターボファン３の近傍以外のターボファン３の遠方の平面状部分ではターボファン３からの吹出流の風速が減速し、前記角度差αが小さい状態で吹出口２ａへ向け偏向できるため、熱交換器通風抵抗を低くできる。そのため、騒音を低減することが可能である。
【００３１】
さらに、空気調和機本体１の四方の側壁１ａ、１ｂに加え、ヘッダー壁１１、分割板１０が入り支柱が増加することにより、空気調和機本体１の高さ方向の荷重に対し強度が増す。そのため、運搬時や積み重ね時でも空気調和機が破損しづらくできる。
【００３２】
以上のように本発明によれば、熱交換性能が高く、低騒音で、吹出流の温度制御がしやすく、強度も高い天井埋込形空気調和機を得られる。
一方、従来の天井埋込形空気調和機と熱交換性能が同等、騒音値も同等で良い場合、熱交換器の長さが長くなった分、高さを低くでき、略菱形形状により通風抵抗が低いため、騒音悪化せず空気調和機本体の高さを低減できコンパクト化が図れる効果を得られる。
【００３３】
実施の形態２．
以下、本発明の実施の形態２における天井埋込形空気調和機を図４を基に説明する。
図４は、本実施の形態２の空気調和機の水平断面図を示し、実施の形態１の図３に相当する。なお、本空気調和機の主な構成は、前記実施の形態１と同様であり、同一部分には同符号を付し、その説明を省略する。
【００３４】
図４において、空気調和機本体１は天井裏に埋設され、空気調和機本体１の内部にターボファン３および熱交換器６を立設し、熱交換器６は平板状の熱交換器（空気流れに対して２列の熱交換器）を同時に略菱形形状となるように湾曲により形成している。そして熱交換器取付部材と併用で空気調和機本体１の短辺側側板１ｂ方向へ延出した分割板１０とヘッダー壁１１により、空気調和機本体１の熱交換器６風下側から化粧パネル２の吹出口２ａへ連通する熱交換器６風上側にある吹出風路１６が二分されている。
【００３５】
このように熱交換器６を形成することにより、実施の形態１に示したような２枚の平板形状の熱交換器６を湾曲して「くの字」、「逆くの字」形状に形成後、熱交換器６の一端をサイドプレート７で他端をヘッダー８および分配器９により固定し略菱形形状にする時に比べ、サイドプレートが不要で部品点数が減らせ、「くの字」、「逆くの字」形状熱交換器を略菱形に形成するためのサイドプレートへの熱交換器の固定作業も不要のため省人化、作業効率の向上が図れ、人的コスト低減が図れる。そのため、安価な空気調和機を提供できる。
【００３６】
実施の形態３．
以下、本発明の実施の形態３における天井埋込形空気調和機を図５〜図６を用いて説明する。
図５は天井埋込型空気調和機の水平断面図、図６は図５のＢ−Ｂ断面における縦断面図である。なお、本空気調和機の主な構成は、前記実施の形態１と同様であり、同一部分には同符号を付し、その説明を省略する。
【００３７】
本実施の形態３における天井埋込型空気調和機は、前記実施の形態１の図１に示すように、天井裏に埋設された直方体状の空気調和機本体１の下部には長方形状の化粧パネル２が取り付けられ部屋１５へ面している。長方形状の化粧パネル２の各長辺２ｄ側にのみに、前記長辺２ｄに沿った長方形状の吹出口２ａを各一つ合計二つ有し、さらに各吹出口２ａには１枚づつ上下方向風向ベーン２ｃが配設されている。また前記長方形の吹出口２ａ二つに挟まれるように化粧パネル２の中央付近には空気調和機本体１への空気の吸込口である格子状の吸込グリル２ｂが配設された二方向吹出し天井埋込型空気調和機である。
【００３８】
また図５、図６のように、空気調和機本体１の内部には、ターボファン３、ターボファンを駆動するためのモータ４、吸込グリル２ｂからターボファン３への導風路を構成するベルマウス５が配設されている。また熱交換器６は、列数２列の熱交換器６をターボファン３近傍が湾曲形状でその他部分はターボファンに沿わない「くの字形状」の熱交換器６ａと「逆くの字形状」の熱交換器６ｂ一対がターボファン３をはさむように立設されている。さらに熱交換器６のターボファン３の遠方部分６ｅは熱交換器列数が多い３列の状態で形成され、各熱交換器６ａ、６ｂの一端はサイドプレート７で、他端はヘッダー８および分配器９により接続され、熱交換器６全体が略菱形形状に形成されている。
さらに、前記熱交換器６の鈍角側二頂点６ｃ、６ｄは空気調和機本体１の長辺側側板１ａの中央付近になるように配設し、さらに前記サイドプレート７から空気調和機本体１の短辺側側板１ｂ方向へ延出した分割板１０とヘッダー８および分配器９を納めたヘッダー壁１１により、空気調和機本体１の熱交換器６風上側から化粧パネル２の吹出口２ａへ連通する熱交換器６風下側にある吹出風路１６が二分されている。
【００３９】
そして、熱交換器６の下部には凝縮水であるドレン水を受け止めるドレンパン１２、モータ４の運転や上下方向風向ベーン２ｃの角度を制御する制御基板を収納する電気品箱１３などが配設される。
さらにターボファン３は、モータ４の回転軸を固定するハブ３ｃと一体に形成された主板３ｂに、回転方向Ａに対し逆向きの後ろ向き羽根３ａが取り付けられ、主板３ｂに対向して羽根３ａへの空気の案内流路を形成する漏斗状のシュラウド３ｄにより構成されターボファン３全体が回転する。
運転時、図５、図６のように、モータ４に駆動され矢印Ａ方向に回転するターボファン３によって、部屋の空気が吸込グリル２ｂから吸い込まれ、フィルタ１４でホコリ等を除去された後、ベルマウス５を通り、ターボファン３に吸い込まれる。その後、ターボファン３から吹き出された空気は熱交換器６により加熱、または冷却され、吹出口２ａから上下方向風向ベーン２ｃにより風向を変更されながら、部屋１５へ吹出され空調する。
【００４０】
このように、天井埋込形空気調和機を構成することにより、従来の図２６、図２７の平板形状の熱交換器１０６を有する天井埋込形空気調和機や、図２９のターボファン１０３の周りに円形の熱交換器１０６を配設した従来の天井埋込形空気調和機に比べ、熱交換器面積を拡大でき、さらに、ターボファン３近傍は熱交換器列数が少なくターボファン３へ寄与する通風抵抗の増加が小さいので、騒音悪化が小さくて冷・暖房時の熱交換器性能の向上が図れる。または熱交換性能が従来と同一性能で良い場合、送風量を低減できるので、低騒音化が図れる。また熱交換器性能、騒音値が従来と同一性能で良い場合、熱交換器面積の高さ方向を削減できるので、空気調和機本体高さＨを低減できコンパクト化が可能である。
【００４１】
以上のように本発明によれば、熱交換性能が高く、または低騒音、またはコンパクトな天井埋込型空気調和機が得られる。
【００４２】
実施の形態４．
以下、本発明の実施の形態４における天井埋込形空気調和機を図７〜図９を用いて説明する。
図７は天井埋込形空気調和機の部屋から見た取付概要図、図８は図７の縦断面図、図９は図８の水平断面図である。
図７〜図９のように、天井裏に埋設された立方体状の空気調和機本体１の下部には正方形状の化粧パネル２が取り付けられ部屋１５へ面している。化粧パネル２の中央付近には空気調和機本体１への空気の吸込口である格子状の吸込グリル２ｂと、化粧パネル２の各辺に沿って形成された長方形状の吹出口２ａを４つ有し、さらに各吹出口２ａには１枚づつ上下方向風向ベーン２ｃを有する４方向吹出し天井埋込形空気調和機である。
【００４３】
また、空気調和機本体１の内部には、ターボファン３、ターボファンを駆動するためのモータ４、ベルマウス５、またターボファン３の周りには、空気調和機本体側壁１ａと平行部をもつ正方形状の熱交換器６が立設され、熱交換器６のターボファンの吹出口３ｅより化粧パネル２の吹出口側の下方部分６ｆでは熱交換器の列数が１列多い状態で形成されている。
そして熱交換器６の下部には凝縮水であるドレン水を受け止めるドレンパン１２、モータ４の運転や上下方向風向ベーン２ｃの角度を制御する制御基板を収納する電気品箱１３などが配設される。
運転時、モータ４に駆動され矢印Ａ方向に回転するターボファン３によって、部屋１５の空気が吸込グリル１ｂから吸い込まれ、フィルタ１４でホコリ等を除去された後、ベルマウス５を通り、ターボファン３に吸い込まれる。その後、ターボファン３から吹き出された空気は熱交換器６により加熱、または冷却され、吹出口２ａから上下方向風向ベーン２ｃにより風向を変更されながら、部屋１５へ吹出され空調する。
このとき、上下方向風向ベーン２ｃは、それぞれ１枚づつ独立で角度を変更することができるものである。
【００４４】
このように、天井埋込形空気調和機を構成することにより、従来の図３１に示す空気調和機本体が立方体形状の天井埋込形空気調和機に比べ、熱交換器面積を拡大でき、さらに熱交換器６のターボファンの吹出口３ｅより下方部分の流速が低い部分でも熱交換器面積が拡大されることから送風量に対する熱交換量が増加し、熱交換効率が向上できる。
またターボファンの吹出口３ｅ近傍に熱交換器６が追加されず、ターボファンへ寄与する通風抵抗の増加が極小なので、ほぼ騒音が同一のまま冷・暖房時の熱交換器性能の向上が図れる。
【００４５】
また、熱交換器６から吹出口２ａへ至る吹出風路１６はエルボ形風路形態であり、熱交換器６の下方部分の通過流速が小さいまま熱交換性能の向上が可能であるので、熱交換器上方からの流れを妨げず吹出風路１６での通風抵抗の増加がない。以上のように本発明によれば、ほぼ騒音が同一のまま熱交換性能が高い天井埋込型空気調和機が得られる。
【００４６】
実施の形態５．
以下、本発明の実施の形態５における天井埋込形空気調和機を図１０〜図１１を用いて説明する。
図１０、図１１は、本発明の天井埋込形空気調和機の一例を示し、図１０は天井埋込形空気調和機の縦断面図、図１１は図１０の水平断面図である。
なお、本空気調和機の主な構成は、前記実施の形態４と同様であり、同一部分には同符号を付し、その説明を省略する。
【００４７】
天井裏に埋設された立方体状の空気調和機本体１の下部には正方形状の化粧パネル２が取り付けられ部屋１５へ面している。化粧パネル２の中央付近には空気調和機本体１への空気の吸込口である格子状の吸込グリル２ｂと、化粧パネル２の各辺に沿って形成された長方形状の吹出口２ａを４つ有し、さらに各吹出口２ａには１枚づつ上下方向風向ベーン２ｃを有する４方向吹出し天井埋込形空気調和機である。
また、空気調和機本体１の内部には、ターボファン３、ターボファン３を駆動するためのモータ４、ベルマウス５、またターボファン３の周りには、空気調和機本体側壁１ａと平行部をもつ正方形状の熱交換器６が立設され、熱交換器６のターボファンの吹出口３ｅ近傍部分６ｇと吹出口３ｅ下方部分６ｈで二分割されている。
また、熱交換器６のターボファンの吹出口３ｅ近傍部分６ｇに比べ、吹出口３ｅより下方部分６ｈのフィンピッチが小さい状態状態で形成されている。したがって、熱交換器６はフィンピッチが大きい部分６ｇとフィンピッチが小さい部分６ｈとの２つの種類の上下組合せからなっています。
【００４８】
このように、天井埋込形空気調和機を構成することにより、従来の図３１に示す空気調和機本体１０１が立方体形状の天井埋込形空気調和機に比べ、熱交換器面積を拡大でき、さらに熱交換器６のターボファンの吹出口３ｅより下方部分の流速が低い部分でも熱交換器面積が拡大されることから送風量に対する熱交換量が増加し、熱交換効率が向上できる。
またターボファンの吹出口３ｅ近傍で熱交換器６のフィンピッチが縮小されないのでターボファン３へ寄与する通風抵抗の増加が小さく、冷・暖房時の熱交換器性能の向上が図れ、騒音を維持したまま熱交換性能を向上できる。
また、熱交換器６から吹出口２ａへ至る吹出風路１６はエルボ形風路形態であり、熱交換器６の下方部分の通過流速が小さいまま熱交換性能の向上が可能であるので、熱交換器上方からの流れを妨げず吹出風路１６での通風抵抗の増加がない空調機を得ることができる。
以上のように、熱交換器を形成することにより、騒音を悪化させることなく熱交換性能が高く、熱交換効率が良い天井埋込型空気調和機を得られる。
【００４９】
実施の形態６．
以下、本発明の実施の形態６における天井埋込形空気調和機を図１２〜図１４に基づいて説明する。
図１２〜図１４は、本発明の天井埋込形空気調和機の一例を示し、図１２は天井埋込形空気調和機の縦断面図、図１３は図１２のＤ−Ｄ断面での水平断面図、図１４は図１２のＥ−Ｅ断面での水平断面図である。なお、本空気調和機の主な構成は、前記実施の形態４と同様であり、同一部分には同符号を付し、その説明を省略する。
【００５０】
空気調和機本体１の内部にはターボファン３、ターボファン３を駆動するためのモータ４、ベルマウス５、またターボファン５の周りには熱交換器６が立設される。そして前記熱交換器６は前記ターボファンの吹出口３ｅをまたぐ位置を境に空気調和機天面側上方の上部熱交換器６ｉと化粧パネル側下方の下部熱交換器６ｊに分けられ、上部熱交換器６ｉと前記ターボファン３との距離Ｌ１は下部熱交換器６ｊと前記ターボファン３との距離Ｌ２に比べ大きくなるように配設されている。また、上部熱交換器６ｉと下部熱交換器６ｊの間、および下部熱交換器６ｊの下面には、各熱交換器６ｉ、６ｊにおいて空気が凝縮される際に発生するドレン水を受けるドレンパン１２ａ、１２ｂがそれぞれ配設されている。
【００５１】
このように熱交換器６およびドレンパン１２を形成することにより、ターボファン３と上部熱交換器６ｉおよび下部熱交換器６ｊで距離Ｌ１＞Ｌ２と異なるので、ターボファン３から吹き出された流れがターボファン吹出口３ｅ近傍から上下熱交換器６ｉ、６ｊに到達するタイミングが変化し、従来の図３２の４方向吹出し天井埋込型空気調和機のようにターボファン吹出口１０３ｅ近傍で同一タイミングで熱交換器１０６へ流れが到達することがない。そのため、ターボファンの吹出口３ｅの高さ方向で受ける圧力変動のタイミングが変化し圧力変動が緩和され低騒音化できる。
【００５２】
また、従来の図３２の空気調和機のように高さ方向で同一位置に熱交換器１０６が配設されていると、冷房時熱交換器１０６で空気が凝縮され生成されるドレン水が熱交換器６のフィン表面に付着し下方へ流れ落ちるため、熱交換器６の空気調和機下方部分では、凝縮されたドレン水と熱交換器６の空気調和機上方部分から流れ落ちてきたドレン水により、熱交換器６のフィン表面における液膜が厚くなり、熱交換効率が悪化してしまい、さらに通風抵抗が増加し騒音悪化してしまう。そのためフィン表面が乾燥している暖房時と濡れている冷房時で騒音値が大幅に変化してしまう。
しかし、本発明のように熱交換器６を高さ方向で２分割し、かつ上部熱交換器６ｉと下部熱交換器６ｊの間にドレンパン１２ａを配設しているので、上部熱交換器６ｉで凝縮されたドレン水が下部熱交換器６ｊへ流れ落ちないので熱交換効率が悪化せず、さらに液膜が厚くならないので通風抵抗の増加が抑制され騒音悪化量が小さくできる。さらに冷・暖房時における騒音値の差が小さくできる。
【００５３】
以上のように、冷房時の騒音値の悪化を抑制し、冷・暖房時騒音値の差が小さく、かつ冷房時でも熱交換効率の高い天井埋込型空気調和機を得ることができる。
【００５４】
実施の形態７．
以下、本発明の実施の形態７における天井埋込形空気調和機を図１５〜図１７に基づいて説明する。
図１５〜図１７は、本発明の天井埋込形空気調和機の一例を示し、図１５は天井埋込形空気調和機の縦断面図、図１６は図１５のＦ−Ｆ断面における水平断面図、図１７は図１５のＧ−Ｇ断面における水平断面図である。なお、本空気調和機の主な構成は、前記実施の形態４と同様であり、同一部分には同符号を付し、その説明を省略する。
【００５５】
図１５〜図１７において、天井裏に埋設された立方体状の空気調和機本体１の下部には正方形状の化粧パネル２が取り付けられ部屋へ面している。化粧パネル２の中央付近には空気調和機本体１への空気の吸込口である格子状の吸込グリル２ｂと、化粧パネル２の各辺に沿って形成された長方形状の吹出口２ａを４つ有し、さらに各吹出口２ａには１枚づつ上下方向風向ベーン２ｃを有する４方向吹出し天井埋込形空気調和機である。
また、空気調和機本体１の内部にはターボファン３、ターボファン３を駆動するためのモータ４、ベルマウス５、またターボファン３の周りには熱交換器６が立設され、二つの略正方形状の熱交換器６ｉ、６ｊのうち空気調和機本体天井側上方部分の上部熱交換器６ｉは熱交換器の湾曲部が空気調和機本体１の側板１ｃの中央付近になるように配置され、空気調和機化粧パネル側下方部分の下部熱交換器６ｊの平面部が空気調和機本体の側板１ｃに沿うように配置されている。したがって、上部熱交換器６ｉと下部熱交換器６ｊはターボファン軸を中心に約９０°回転させずれた位置関係で上下方向に配置された構成となっている
そして、熱交換器６の凝縮水であるドレン水を受け止めるドレンパン１２は、前記上部熱交換器６ｉの下部および前記下部熱交換器６ｊの上面を覆うように形成された上部ドレンパン１２ａと、下部熱交換器６ｊの下部を覆うように形成された下部ドレンパン１２ｂで構成され、上部熱交換器６ｉと下部熱交換器６ｊの間の隙間をふさぐように配設され吹出風路１６を構成している。
【００５６】
このように熱交換器６ｉ、６ｊ、ドレンパン１２ａ、１２ｂを形成することにより、熱交換器６の平面部のターボファン３に接近する部分が熱交換器６の上下高さ方向で互い違いになり、ターボファン３の吹出し流が熱交換器６へ流入するタイミングが熱交換器高さ方向で変化するので、ターボファン３が熱交換器６から受ける圧力変動が拡散され低騒音化できる。その結果、低騒音化された分、風量を増加できるので、熱交換量が増加でき熱交換効率の向上が図れる。
【００５７】
また、本発明のように構成することにより上部および下部の熱交換器湾曲部が互い違いになるので、吹出口長手方向における風速分布が均一化されて、吹出口２ａにおける温度分布が均一化され、冷房時上下方向風向ベーン２ｃに結露する恐れが抑制される。その結果、空気調和機が設置されている部屋１５へ結露水が滴下の可能性も無くなり品質が向上する。
【００５８】
さらに熱交換器６を高さ方向で２分割し、かつ上部熱交換器６ｉと下部熱交換器６ｊの間にドレンパン１２ａを配設しているので、従来のように熱交換器上方で凝縮されたドレン水が熱交換器下方まで流れ落ちず液膜が厚くならないので、熱交換効率が悪化せず、さらに通風抵抗の増加が抑制され騒音悪化量が小さくできる。さらに冷・暖房時における騒音値の差が小さくできる。
【００５９】
以上のように、本発明によれば低騒音で、冷・暖房時ともに熱交換効率が高く、品質が高い天井埋込型空気調和機を得られる。
【００６０】
実施の形態８．
以下、本発明の実施の形態８における天井埋込形空気調和機を図１８から図２０に基づいて説明する。
図１８〜図２０は本発明の天井埋込形空気調和機の一例を示し、図１８は天井埋込形空気調和機の縦断面図、図１９は図１８の水平断面図、図２０は化粧パネル２の斜視図である。なお、本空気調和機の主な構成は、前記実施の形態１と同様であり、同一部分には同符号を付し、その説明を省略する。
【００６１】
図１８、図１９において、天井裏に埋設された直方体状の空気調和機本体１の下部には長方形状の化粧パネル２が取り付けられ部屋１５へ面し、長方形状の化粧パネル２の各長辺側２ｄにのみに、前記長辺２ｄに沿った長方形状の吹出口２ａを各一つ合計二つ有し、さらに各吹出口２ａには１枚づつ上下方向風向ベーン２ｃが配設されている。また前記長方形の吹出口２ａ二つに挟まれるように化粧パネル２の中央付近には空気調和機本体１への空気の吸込口である格子状の吸込グリル２ｂが配設された二方向吹出し天井埋込型空気調和機である。
【００６２】
そして、図１８〜図２０のように、空気調和機本体１の下面に取り付けられた化粧パネル２の二つの長方形状の吹出口部２ｆが突出し空気調和機本体１に挿入され、熱交換器６から化粧パネルの吹出口２ａへの吹出風路１６の一部を構成している。さらに前記化粧パネルの吹出口部２ｆの長手方向に風向変更可能な左右方向風向ベーン２ｇが配設されている。また各左右方向風向ベーン２ｇはリンク棒２ｈにより接続され、ベーンモータ１８により角度変更ができるように構成されている。さらに化粧パネルの吹出口２ａには上下方向風向ベーン２ｃが配設されているので上下左右風向変更可能となっている。
【００６３】
このように化粧パネルを形成することにより、天井埋込型空気調和機の吹出し範囲が拡大し、従来の図２４、２７などに示す二方向吹出し天井埋込型空気調和機のように化粧パネルの長方形状の吹出口の短手方向のみでなく、長手方向も送風方向変更可能なため、部屋における温度分布が均一化され快適性が向上する。
【００６４】
【発明の効果】
以上説明したとおり、請求項１に係るこの発明によれば、天井裏に埋設された空気調和機本体の内部にターボファンとこのターボファンを囲むように熱交換器を立設し、前記空気調和機本体の下面に吸込口および吹出口を有した化粧パネルを備えた天井埋込形空気調和機において、前記空気調和機本体の直方体形状に対応する長方形状の前記化粧パネルの長辺側に有した一対の吹出口と、前記ターボファン近傍は湾曲形状でその他部分はターボファンに沿わない「くの字形状」および「逆くの字形状」の一対がターボファンをはさむように立設した略菱形形状の熱交換器と、前記熱交換器へ冷媒を流通接続させるヘッダーおよび分配器を納めたヘッダー壁と、前記熱交換器のヘッダー壁との対向側から前記空気調和機本体の側板側へ延出した分割板と、を備え、前記略菱形形状の熱交換器の鈍角側二頂点は前記空気調和機本体の長辺側側板の中央付近になるように配設すると共に、前記分割板と前記ヘッダー壁により前記熱交換器の風下側から前記化粧パネルの一対の吹出口へ連通する吹出風路が二分され、前記熱交換器の列数は前記ターボファンから遠方部分が近傍部分より多いものであるので、熱交換器の略菱形形状により従来の天井埋込形空気調和機に比べ熱交換器面積を拡大でき、通風抵抗が低く、さらに、ターボファン近傍は熱交換器列数が少なくターボファンへ寄与する通風抵抗の増加が小さいので、騒音悪化が小さくて冷・暖房時の熱交換器性能の向上が図れる。または熱交換性能が従来と同一性能で良い場合、送風量を低減できるので、低騒音化が図れる。また熱交換器性能、騒音値が従来と同一性能で良い場合、熱交換器面積の高さ方向を削減できるので、空気調和機本体高さを低減できコンパクト化が可能である。よって、熱交換性能が高く、または低騒音、またはコンパクトな天井埋込形空気調和機が得られる。
【００６５】
また請求項２に係る発明によれば、前記熱交換器は一つの平板状をなすとともに、略菱形形状となるように湾曲または屈曲により形成したものであるので、２枚の平板形状の熱交換器を湾曲して「くの字」、「逆くの字」形状に形成後、熱交換器の一端をサイドプレートで他端をヘッダー・分配器により固定し略菱形形状にする時に比べ、サイドプレートが不要で部品点数が減らせ、「くの字」、「逆くの字」形状熱交換器を略菱形に形成するためのサイドプレートへの熱交換器の固定作業も不要のため省人化、作業効率の向上が図れ、人的コスト低減が図れる。そのため、安価な空気調和機を提供できる。
【００６８】
さらに請求項３に係る発明によれば、天井裏に埋設された空気調和機本体の内部にターボファンとこのターボファンを囲むように熱交換器を立設し、前記空気調和機本体の下面に吸込口および吹出口を有した化粧パネルを備えた天井埋込形空気調和機において、前記熱交換器は前記ターボファンの吹出口をまたぐ位置を境に上部と下部の２つに分割して配設されると共に、前記上部熱交換器と前記ターボファンの吹出口との距離が前記下部熱交換器との距離に比べて大きくなるように配設し、前記上部熱交換器と下部熱交換器の間に前記上部熱交換器で発生するドレン水を受けるドレンパンを配設したものなので、ターボファンと上部熱交換器、下部熱交換器で距離が異なり、ターボファンから吹き出された流れがターボファン吹出口近傍から上下熱交換器に到達するタイミングが変化するので、ターボファンの吹出口の高さ方向で受ける圧力変動のタイミングが変化し圧力変動が緩和され低騒音化できる。
また、熱交換器を高さ方向で２分割し、かつ上部熱交換器と下部熱交換器の間に上部熱交換器で発生するドレン水を受けるドレンパンを配設しているので、上部熱交換器で凝縮されたドレン水が下部熱交換器へ流れ落ちないので熱交換効率が悪化せず、さらに液膜が厚くならないので通風抵抗の増加が抑制され騒音悪化量が小さくできる。さらに冷・暖房時における騒音値の差が小さくできる。
その結果、冷房時の騒音値の悪化を抑制し、冷・暖房時騒音値の差が小さく、かつ冷房時でも熱交換効率の高い天井埋込形空気調和機を得ることができる。
【００６９】
さらに請求項４に係る発明によれば、天井裏に埋設された空気調和機本体の内部にターボファンとこのターボファンを囲むように熱交換器を立設し、前記空気調和機本体の下面に吸込口および吹出口を有した化粧パネルを備えた天井埋込形空気調和機において、前記熱交換器は前記ターボファンの吹出口をまたぐ位置を境に上部と下部の２つに分割され、前記上方部分に配設される上部熱交換器の湾曲部が前記空気調和機の側板の中央付近になるように配置されると共に、前記下方部分に配設される下部熱交換器の平面部が側板に沿うように配置されたものであるので、熱交換器の平面部のターボファンに接近する部分が熱交換器の高さ方向で互い違いになり、ターボファンの吹出し流が熱交換器へ流入するタイミングが熱交換器高さ方向で変化するので、ターボファンが熱交換器から受ける圧力変動が拡散され低騒音化できる。その結果、低騒音化された分、風量を増加できるので、熱交換量が増加でき熱交換効率の向上が図れる。
また熱交換器湾曲部が互い違いになり吹出口長手方向における風速分布が均一化されるので、吹出口における温度分布が均一化され、冷房時上下方向風向ベーンに結露する恐れが抑制される。その結果、空気調和機が設置されている部屋へ結露水が滴下の可能性も無くなり品質が向上する。
【００７０】
さらに請求項５に係る発明によれば、前記化粧パネルの吹出口部が前記空気調和機本体の吹出風路内に突出し、前記化粧パネルの吹出口部に左右方向風向ベーンを配設したものであるので、従来の二方向吹出し天井埋込形空気調和機のように化粧パネルの長方形状の吹出口の短手方向のみでなく、長手方向も送風方向変更可能なため、部屋における温度分布が均一化され快適性が向上する。
【図面の簡単な説明】
【図１】本発明の実施の形態１に係る天井埋込形空気調和機の部屋から見た外観図である。
【図２】図１の天井埋込形空気調和機の縦断面図である。
【図３】図２の天井埋込形空気調和機の水平断面図である。
【図４】本発明の実施の形態２に係る天井埋込形空気調和機の水平断面図である。
【図５】本発明の実施の形態３に係る天井埋込型空気調和機の水平断面図である。
【図６】図５の断面Ｂ−Ｂにおける縦断面図である。
【図７】本発明の実施の形態４に係る天井埋込形空気調和機の部屋から見た取付概要図である。
【図８】図７の天井埋込形空気調和機の縦断面図である。
【図９】図８の天井埋込形空気調和機の水平断面図である。
【図１０】本発明の実施の形態５に係る天井埋込形空気調和機の縦断面図である。
【図１１】図１０の天井埋込形空気調和機の水平断面図である。
【図１２】本発明の実施の形態６に係る天井埋込形空気調和機の縦断面図である。
【図１３】図１２の断面Ｄ−Ｄでの水平断面図である。
【図１４】図１２の断面Ｅ−Ｅでの水平断面図である。
【図１５】本発明の実施の形態７に係る天井埋込形空気調和機の縦断面図である。
【図１６】図１５の断面Ｆ−Ｆにおける水平断面図である。
【図１７】図１５の断面Ｇ−Ｇにおける水平断面図である。
【図１８】本発明の実施の形態８に係る天井埋込形空気調和機の縦断面図である。
【図１９】図１８の天井埋込形空気調和機の水平断面図である。
【図２０】本発明の実施の形態８に係わり化粧パネルの斜視図である。
【図２１】従来の天井埋込形空気調和機の部屋から見た取付外観図である。
【図２２】図２１の縦断面図である。
【図２３】図２２の水平断面図である。
【図２４】従来の第２の天井埋込形空気調和機の部屋から見た取付外観図である。
【図２５】図２４の縦断面図である。
【図２６】図２５の水平断面図である。
【図２７】従来の第３のターボファンを用いた２方向吹出し天井埋込形空気調和機の水平断面図である。
【図２８】従来の第４のターボファンの周囲にＵ字形の熱交換器を立設した天井埋込形空気調和機の水平断面図である。
【図２９】従来の第５の円形の熱交換器を立設した天井埋込形空気調和機の水平断面図である。
【図３０】従来の第６の波形の熱交換器を立設した天井埋込形空気調和機の水平断面図である。
【図３１】従来の第７の天井埋込形空気調和機の部屋から見た取付外観図である。
【図３２】図３１の天井埋込形空気調和機の縦断面図である。
【図３３】図３２の水平断面図である。
【符号の説明】
１天井埋込形空気調和機本体、１ａ空気調和機本体の長辺側側板、１ｂ空気調和機本体の短辺側側板、１ｃ空気調和機本体の側板、２化粧パネル、２ａ吹出口、２ｂ吸込口、２ｃ上下方向風向ベーン、２ｄ化粧パネル長辺、２ｅ化粧パネル短辺、２ｆ吹出部、２ｇ左右方向風向ベーン、２ｈリンク棒、３ターボファン、３ａ羽根、３ｂ主板、３ｃハブ、３ｄシュラウド、３ｅターボファンの吹出口、４モータ、５ベルマウス、６熱交換器、６ａくの字形熱交換器、６ｂ逆くの字形熱交換器、６ｃくの字形熱交換器の鈍角側頂点、６ｄ逆くの字形熱交換器の鈍角側頂点、６ｅターボファン遠方部分、６ｆターボファンの吹出口下方部分の熱交換器、６ｇターボファン吹出口近傍の上部熱交換器、６ｈターボファンの吹出口下方のフィンピッチが上部熱交換器６ｇより小さい下部熱交換器、６ｉ上部熱交換器、６ｊ下部熱交換器、７サイドプレート、８ヘッダー、９分配器、１０分割板、１１ヘッダー壁、１２ドレンパン、１２ａ上部ドレンパン、１２ｂ下部ドレンパン、１３電気品箱、１４フィルタ、１５部屋、１６吹出風路、１７ドレンポンプ、１８ベーンモータ、１９吸込風路、２２照明、１０１天井埋込形空気調和機本体、１０１ａ空気調和機本体の長辺側側板、１０１ｂ空気調和機本体の短辺側側板、１０１ｃ空気調和機本体の側板、１０１ｄ空気調和機の天板、１０２化粧パネル、１０２ａ吹出口、１０２ｂ吸込口、１０２ｃ上下方向風向ベーン、１０２ｄ化粧パネル長辺、１０２ｅ化粧パネル短辺、１０２ｆ吹出部、１０２ｇ左右方向風向ベーン、１０２ｈリンク棒、１０２ｉ吸込パネル、１０３ターボファン、１０３ａ後ろ向き羽根、１０３ｂ主板、１０３ｃハブ、１０３ｄシュラウド、１０３ｅターボファンの吹出口、１０４モータ、１０５ベルマウス、１０６熱交換器、１０７サイドプレート、１０８ヘッダー、１０９分配器、１１０分割板、１１１ヘッダー壁、１１２ドレンパン、１１３電気品箱、１１４フィルタ、１１５部屋、１１６吹出風路、１１７ドレンポンプ、１１８ベーンモータ、１１９吸込風路、１２０多翼ファン、１２０ａ主板、１２０ｂ多翼ファンの側板、１２０ｃ羽根、１２０ｄ羽根車、１２０ｅ吸込ベルマウス、１２０ｆケーシング吹出口、１２０ｇケーシング、１２１分割板、１２２照明、Ａファン回転方向、Ｃファン吹出流れ、Ｈ空気調和機本体高さ、Ｌ１ターボファン外周と上部熱交換器間距離、Ｌ２ターボファン外周と下部熱交換器間距離。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ceiling-embedded air conditioner, and more particularly to improvement of a heat exchanger, noise reduction, and compactness.
[0002]
[Prior art]
21, FIG. 22 and FIG. 23 show an example of a conventional ceiling-embedded air conditioner, FIG. 21 is an external view of the conventional ceiling-embedded air conditioner viewed from the room, and FIG. FIG. 23 is a horizontal sectional view of the ceiling-embedded air conditioner of FIG.
As shown in FIGS. 21 and 22, a rectangular decorative panel 102 is attached to the lower part of a rectangular parallelepiped air conditioner main body 101 embedded in the back of the ceiling and faces the room. Near the center of the decorative panel 102, there are four lattice-shaped suction grilles 102 b that serve as air inlets to the air conditioner body 101 and four rectangular air outlets 102 a formed along each side of the decorative panel 102. In addition, each air outlet 102a is provided with a vertical wind direction vane 102c one by one to form a four-direction blowout ceiling embedded air conditioner.
Further, as shown in FIGS. 22 and 23, the air conditioner main body 101 includes a turbo fan 103, a motor 104 for driving the turbo fan 103, a bell mouth 105, and an air conditioner around the turbo fan 103. A rectangular heat exchanger 106 having a parallel portion with the machine body side plate 101c is installed upright, and the end of the heat exchanger 106 is piped by a header 108 and a distributor 109 and separated from a blow-out air passage 116 by a header wall 111. The
[0003]
Furthermore, at the lower part of the heat exchanger 106, the drain pan 112 that receives the drain water that is condensed water, the drain pump 117 that discharges the drain water stored in the drain pan 112, the operation of the motor 104 and the angle of the vertical wind vane 102c. An electrical component box 113 for storing a control board to be controlled is disposed.
In addition, the turbo fan 103 has a main plate 103b formed integrally with a hub 103c that fixes the rotation shaft of the motor 104, and a backward blade 103a that is opposite to the rotation direction A is attached, and the blade 103a faces the main plate 103b. It is constituted by a funnel-shaped shroud 103d that forms an air guide passage to the entire turbo fan, and blows out air.
During operation, after the air in the room 115 is sucked from the suction grille 102b by the turbo fan 103 that is driven by the motor 104 and rotates in the direction of arrow A as shown in FIGS. Then, it passes through the bell mouth 105 and is sucked into the turbo fan 103. After that, the air blown out from the turbo fan 103 is heated or cooled by the heat exchanger 106 and is blown out to the room 115 and air-conditioned while the air direction is changed by the up-down direction air direction vane 102c from the air outlet 102a.
[0004]
As another example of a conventional ceiling-embedded air conditioner, FIG. 24 is an external view of the installation as seen from the room of the ceiling-embedded air conditioner, FIG. 25 is a longitudinal sectional view of FIG. 24, and FIG. 25 is a horizontal sectional view.
As shown in FIGS. 24 and 25, a rectangular decorative panel 102 is attached to a lower portion of a rectangular parallelepiped air conditioner main body 101 embedded in the ceiling and faces the room 115.
In this air conditioner, a total of two rectangular air outlets 102a are formed along only the long sides 102d of the rectangular decorative panel 102, and one air outlet 102a is formed in the vertical direction. The inside of the rectangular decorative panel 102 sandwiched between the air outlets 102a is a suction air passage 119, and a suction panel 102i is attached so as to cover the air intake passage 119. This is a two-way blown ceiling embedded air conditioner that uses only two rectangular openings between 102a and the suction panel 102i as suction ports 102b and uses a multi-blade fan 120 as a fan.
25 and 26, in the air conditioner main body 101 embedded in the back of the ceiling, a pair of flat heat exchangers 106 extending in the long side direction of the air conditioner main body 101, A drain pan 112 for storing and draining drain water generated in the heat exchanger 106 is provided at the lower part of the heat exchanger, and a disc-shaped main plate 120a and both sides of the main plate are disposed between the pair of heat exchangers 106. An impeller 120d formed by attaching a large number of blades 120c to the ring-shaped side plate 120b so that the mounting angle is inclined in the rotation direction of the impeller, and a suction bell mouth 120e opening to the side plate side and the top plate side A multi-blade fan 120 housed in a casing 120 g having one opening 120 f that opens is fixed to the top plate, and the suction side and blow-out side air passages of the multi-blade fan 120 are partitioned by the air passage dividing plate 121. To have.
[0005]
With the configuration described above, when the impeller 120d of the multiblade fan 120 is driven and rotated by the motor 104, the air in the room 115 is sucked from the two rectangular suction ports 102b of the decorative panel 102. It passes through 119 and is sucked into the suction bell mouth 120e of the multi-blade fan. Thereafter, the air blown out from the blowout opening 120f of the multiblade fan toward the top plate 101d by the impeller 120d of the multiblade fan is shunted while colliding with the top plate 101d as indicated by an arrow, and the respective heat exchangers 106 are exchanged. The heat exchange passes through.
Then, it passes through a blowout air passage 116 constituted by a drain pan 112 and a side plate 101a, and is blown into the room 115 from an air outlet 102a of the decorative panel 102 to be air-conditioned.
[0006]
As another example of a conventional ceiling-embedded air conditioner, Japanese Patent No. 3138632 in FIG. 27 shows a horizontal section of a two-way blown ceiling-mounted air conditioner using a turbofan. The figure is shown. In the figure, a rectangular-shaped air conditioner main body 101 and a rectangular decorative panel 102 are disposed at the lower part of the air conditioner main body, and rectangular outlets 102a along only the long sides of the decorative panel 102 are respectively provided. Two flat heat exchangers 106 are provided inside the air conditioner main body 101 so as to sandwich the turbo fan 103 and stand along the rectangular air outlet 102a. . In addition, each of the two rectangular outlets 102a is provided with an up-down direction wind vane 102c.
[0007]
In addition to this, in JP 2000-46360 A, a U-shaped heat exchanger is erected around the turbofan shown in the horizontal sectional view of the two-way blown ceiling embedded air conditioner shown in FIG. As shown in the horizontal sectional view of the ceiling-embedded air conditioner in FIGS. 29 and 30 disclosed in Japanese Patent Application Laid-Open No. 11-149711, there is a type in which a circular or corrugated heat exchanger is erected.
[0008]
31, 32, and 33 show an example of a conventional ceiling-embedded air conditioner, FIG. 31 is an external view of the installation of the conventional ceiling-embedded air conditioner, and FIG. 32 is a diagram. 31 is a longitudinal sectional view of the ceiling-embedded air conditioner 31, and FIG. 33 is a horizontal sectional view of FIG.
As shown in FIGS. 31 and 32, a square decorative panel 102 is attached to the lower part of a cubic air conditioner body 101 embedded in the back of the ceiling and faces a room 115. In the vicinity of the center of the decorative panel 102, there are four lattice-shaped suction grilles 102b that serve as air inlets to the air conditioner body 101, and four rectangular air outlets 102a formed along each side of the decorative panel 102. Furthermore, each air outlet 102a is a four-direction blowout ceiling embedded air conditioner having one airflow vane 102c in the vertical direction.
[0009]
Further, as shown in FIGS. 32 and 33, the air conditioner main body 101 has an air conditioner around the turbo fan 103, the motor 104 for driving the turbo fan 103, the bell mouth 105, and the turbo fan 103. A square heat exchanger 106 having a parallel part with the machine body side plate 101c is erected, and at the lower part of the heat exchanger 106, a drain pan 112 for receiving drain water which is condensed water, operation of the motor 104 and vertical wind direction vane 102c. An electrical component box 113 for storing a control board for controlling the angle is provided. Further, as the turbo fan 103, a turbo fan similar to that described with reference to FIGS. 22 and 23 is used.
During operation, after the air in the room 115 is sucked from the suction grille 102b by the turbo fan 103 driven by the motor 104 and rotating in the direction of arrow A as shown in FIGS. 31 to 33, dust and the like are removed by the filter 114. Then, it passes through the bell mouth 105 and is sucked into the turbo fan 103. After that, the air blown out from the turbo fan 103 is heated or cooled by the heat exchanger 106 and is blown out to the room while the air direction is changed by the up-and-down air direction vane 102c from the air outlet 102a to air-condition the room.
[0010]
[Problems to be solved by the invention]
A conventional ceiling-embedded air conditioner is configured as described above. On the other hand, in recent years, the height of the ceiling behind offices and condominiums where a ceiling-embedded air conditioner is installed tends to be low in order to secure an effective room capacity. Therefore, the air conditioner main body is required to have a small height so that it can be installed even if the height of the back of the ceiling is low, regardless of whether it is a 4-way blowout or a 2-way blowout. There is also a demand for products with low noise and high heat exchange performance even if the air conditioner body is small.
[0011]
In the case of a conventional unidirectional air conditioner body having a rectangular parallelepiped and a four-way blow-out ceiling type air conditioner having a rectangular decorative panel, the installation space may be too narrow to be installed when the shape of the room is narrow and narrow. is there. Furthermore, in the case of a four-direction blowout ceiling type air conditioner, air-conditioned air can be blown in all directions, so that the room lighting 122 to be installed as shown in FIG. Since the dimensions of the short side 102e of the rectangular decorative panel 102 are large, the position of the air outlets 102a on the short side 102e of the decorative panel is horizontally arranged so as to block the row of the lights 112. If the air outlet 102a is arranged, the two-way outlet embedded air conditioner having an air outlet only on the long side of the rectangular decorative panel 102a is selected because the design of the ceiling surface is poor. There are many cases.
[0012]
Further, a total of two rectangular outlets 102a are formed along the long side only on the long side 102d side of the conventional rectangular air conditioner main body 101 and the rectangular decorative panel 102 of FIG. In the case of a two-way blowout ceiling embedded air conditioner using a multi-blade fan 120, the multi-blade fan 120 requires a casing 120g for stability of the behavior during rotation, and most of the main body height is large. Therefore, there is a problem that the air conditioner main body height H cannot be reduced.
Further, the inside of the rectangular decorative panel 102 sandwiched between the air outlets 102a is defined as a suction air passage 119, and a suction panel 102i is attached so as to cover the suction air passage 119, and the air outlet 102a and the suction panel 102i Since only the two rectangular openings in between are used as the suction port 102b, there is a disadvantage that the ventilation resistance is high and noise is deteriorated.
[0013]
A rectangular air outlet 102a is provided along only the long sides 102d of the rectangular air conditioner main body 101 and the rectangular decorative panel 102 shown in the conventional Japanese Patent No. 3138632 in FIG. In the case of a two-way blowout ceiling type air conditioner that uses two turbofans 103 formed in total, the required height of the fan is reduced by changing from a multi-blade fan to a turbofan. The machine body height H can be reduced. However, as shown in FIGS. 27 (b) and 27 (c) showing streamlines and arrows indicating the wind speed distribution between the turbo fan and the heat exchanger in FIG. 27, the wind speed is very different near and far from the fan. A difference in temperature of the blowout flow occurs in the direction of the long side 102d of the blowout port, and even if the heat exchanger is large, the heat exchange efficiency, which is the ratio of the heat exchange amount to the air flow rate, is low, and sufficient performance cannot be extracted.
[0014]
In addition, in the two-way blowout ceiling embedded air conditioner using either the conventional turbo fan or the multi-blade fan shown in FIGS. 27 and 24, a total of 2 is provided on each side of the long side 102d of the rectangular decorative panel 102. Since there is only one rectangular air outlet 102a, and there is only one vertical air vane 102c having the same cross-sectional shape in one air outlet 102a, it is difficult for the wind to blow in the short side direction 102e of the decorative panel 102, and the air direction cannot be changed. Therefore, there is a drawback that temperature unevenness occurs depending on the location of the room, and some people feel uncomfortable.
[0015]
In the case of a conventional air conditioner body 101 of FIG. 31 having a cubic shape and a four-direction blowout ceiling embedded air conditioner having four outlets 102a, the turbo of the square heat exchanger 106 to be mounted. The lower part away from the fan outlet 103e has a low heat exchanger passage flow rate, so the heat exchange amount is small and the heat exchange efficiency is poor compared to the vicinity of the turbo fan outlet 103e where the heat exchanger passage flow rate is high.
Further, as shown in FIG. 32, since the flat portion of the substantially square heat exchanger 106 is at the same position in the height direction with respect to the turbo fan outlet 103e, the turbo fan outlet 103e of the heat exchanger 106 is provided. In the vicinity, the flow blown out from the turbo fan 103 collides with the heat exchanger 106 at substantially the same timing. Therefore, pressure fluctuations are received at the same timing in the height direction of the blower outlet 103e of the turbofan.
Further, as shown in FIG. 33, while the turbo fan 103 is rotating, the distance between the plane part of the heat exchanger 106 → the curved part → the plane part →... The plane part, the turbo fan 103 and the heat exchanger 106 changes rapidly and periodically. As a result, the pressure fluctuation is also received during the rotation, and as a result, the pressure fluctuation is received by the turbofan blade 103a and the noise is deteriorated.
[0016]
When the number of rows of the entire heat exchanger is increased to increase the heat exchanger area, regardless of whether the four-way blowing or the two-way blowing is performed, the turbo fan 103 and the heat exchanger 106 approach and the vicinity of the turbo fan outlet 103e. As the ventilation resistance of the heat exchanger increases, the noise becomes worse. In addition, when the fin pitch of the entire heat exchanger is reduced, there is a problem that the ventilation resistance increases and the noise worsens.
[0017]
The present invention has been made to solve the above-mentioned drawbacks and problems, and is a low noise, compact, high heat exchange performance, low temperature unevenness in the room, and high comfort in a ceiling. Aim to get
[0018]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a ceiling-embedded air conditioner, wherein a turbofan and a heat exchanger are provided so as to surround the turbofan inside an air conditioner body embedded in a ceiling, and the air conditioner In a ceiling-embedded air conditioner provided with a decorative panel having a suction port and a blower outlet on the lower surface of the main body, the long side of the rectangular decorative panel corresponding to the rectangular parallelepiped shape of the air conditioner main body has A pair of air outlets and a generally rhombus with a curved shape in the vicinity of the turbofan and a pair of a "U" shape and a "U" shape that do not follow the turbo fan so as to sandwich the turbo fan A heat exchanger having a shape, a header wall containing a header and a distributor for circulating and connecting a refrigerant to the heat exchanger, and a side plate side of the air conditioner body from a side opposite to the header wall of the heat exchanger. The divided plate The obtuse angle-side two vertices of the substantially rhombus-shaped heat exchanger are disposed so as to be near the center of the long side plate of the air conditioner main body, and the heat exchanger is formed by the divided plate and the header wall. The blower air passage communicating from the leeward side to the pair of air outlets of the decorative panel is divided into two, and the number of rows of the heat exchangers is greater in the portion far from the turbofan than in the vicinity.
[0019]
A ceiling-embedded air conditioner according to a second aspect of the present invention is one in which the heat exchanger has a flat plate shape and is curved or bent so as to have a substantially rhombus shape.
[0022]
According to a third aspect of the present invention, there is provided a ceiling-embedded air conditioner, wherein a turbo fan and a heat exchanger are provided so as to surround the turbo fan inside an air conditioner body embedded in a ceiling, and the air conditioner In a ceiling-embedded air conditioner provided with a decorative panel having a suction port and an air outlet on the lower surface of the main body, the heat exchanger is divided into two parts, an upper part and a lower part, at a position across the air outlet of the turbofan. The upper heat exchanger and the turbo fan outlet are arranged such that the distance between the upper heat exchanger and the blower outlet of the turbofan is larger than the distance between the lower heat exchanger and the upper heat exchanger. A drain pan for receiving drain water generated in the upper heat exchanger is disposed between the lower heat exchangers.
[0023]
According to a fourth aspect of the present invention, there is provided a ceiling-embedded air conditioner, wherein a turbo fan and a heat exchanger are disposed so as to surround the turbo fan inside an air conditioner body embedded in a ceiling, and the air conditioner In a ceiling-embedded air conditioner provided with a decorative panel having a suction port and an air outlet on the lower surface of the main body, the heat exchanger is divided into two parts, an upper part and a lower part, at a position across the air outlet of the turbofan. The curved portion of the upper heat exchanger that is divided and disposed in the upper part is disposed so as to be near the center of the side plate of the air conditioner, and the lower heat exchanger that is disposed in the lower part The flat portion is disposed along the side plate.
[0024]
In a ceiling-embedded air conditioner according to a fifth aspect of the present invention, the air outlet of the decorative panel projects into the air outlet of the air conditioner main body, and a left and right airflow direction vane is arranged at the air outlet of the decorative panel. It is set.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Hereinafter, the ceiling-embedded air conditioner according to Embodiment 1 of the present invention will be described with reference to FIGS.
1 is an external view of a ceiling-embedded air conditioner according to the present invention as viewed from a room, FIG. 2 is a longitudinal sectional view of the ceiling-embedded air conditioner of FIG. 1, and FIG. 3 is a horizontal sectional view of FIG. Show.
As shown in FIG. 1, a rectangular decorative panel 2 is attached to the lower portion of a rectangular parallelepiped air conditioner body 1 embedded in the back of the ceiling and faces the room 15. Further, only one rectangular outlet 2a along the long side 2d is provided on each long side 2d side of the rectangular decorative panel 2, and one sheet is provided for each outlet 2a. The up-down direction wind direction vanes 2c are arranged one by one. In addition, a latticed suction grill 2b, which is an air suction port for the air conditioner body 1, is disposed near the center of the decorative panel 2 so as to be sandwiched between the two rectangular outlets 2a.
[0026]
As shown in FIGS. 2 and 3, the air conditioner main body 1 includes a turbo fan 3, a motor 4 for driving the turbo fan 3, and a wind guide path from the suction grille 2 b to the turbo fan 3. A bell mouth 5 is provided. In addition, the heat exchanger 6 includes a pair of “curve-shaped” heat exchangers 6 a and a pair of “reverse-shaped” heat exchangers 6 b that do not follow the turbofan 3 in the vicinity of the turbofan 3. The heat exchangers 6a and 6b are erected so as to sandwich the turbo fan 3, and one end of each heat exchanger 6a, 6b is connected to the side plate 7 and the other end is connected to the header 8 / distributor 9, and the entire heat exchanger 6 is formed in a substantially rhombus shape. Has been.
Further, the obtuse angle side two vertices 6c, 6d of the “curve shape or the inverted V shape” of the heat exchanger 6 are arranged so as to be near the center of the long side plate 1a of the air conditioner body 1, Further, a divided plate 10 extending from the side plate 7 in the direction of the short side plate 1b of the air conditioner main body 1 and a header containing a header 8 and a distributor 9 located on opposite sides of the substantially rhombic shape. The wall 11 bisects the blowout air passage 16 that is on the upstream side of the heat exchanger 6 that communicates with the blower outlet 2a of the decorative panel 2 from the downstream side of the heat exchanger 6 of the air conditioner body 1.
[0027]
At the lower part of the heat exchanger 6, there is a drain pan 12 that receives the drain water that is condensed water, a drain pump 17 that discharges the drain water to the outside of the machine, a control board that controls the operation of the motor 4 and the angle of the vertical wind vane 2c. An electrical box 13 or the like for storing the battery is disposed.
The turbo fan 3 has a main plate 3b formed integrally with a hub 3c for fixing the rotation shaft of the motor 4, and a backward blade 3a opposite to the rotation direction A of the turbo fan is attached to face the main plate 3b. The funnel-shaped shroud 3d that forms the air guide flow path to the blades 3a is configured to rotate the entire turbo fan 3.
During operation, after the air in the room 15 is sucked from the suction grille 2b by the turbo fan 3 driven by the motor 4 and rotating in the direction of the arrow A as shown in FIGS. Then, it passes through the bell mouth 5 and is sucked into the turbo fan 3. Thereafter, the air blown out from the turbo fan 3 is heated or cooled by the heat exchanger 6 and blown out to the room 15 to be air-conditioned while the air direction is changed from the air outlet 2a by the vertical air direction vane 2c.
[0028]
Thus, by configuring the ceiling-embedded air conditioner, the conventional ceiling-embedded air conditioner having the flat plate heat exchanger 106 shown in FIGS. 26 and 27, or the turbo fan of FIG. Compared to a conventional ceiling-embedded air conditioner in which a circular heat exchanger 106 is disposed around, the length of the heat exchanger 6 can be increased and the heat exchanger area can be increased, so that the heat exchange performance can be improved. .
[0029]
Further, in the case where the circular heat exchanger 106 is disposed around the turbo fan 103 of FIG. 29, the flow C blown out from the turbo fan 103 and the inflow angle difference α between the fins of the heat exchanger 106 are all around the circumference. However, since the angle difference α is large and the wind speed is large, the ventilation resistance becomes large. However, as shown in FIG. 3, the flow C blown out from the turbo fan 3 is the flow of the blow-out flow from the turbo fan 3 in a flat portion far from the turbo fan 3 other than the vicinity of the turbo fan 3 of the approximately rhombus heat exchanger 6. Since the wind speed is decelerated and deflection can be made toward the outlet 2a in a state where the angle difference α is small, the ventilation resistance of the heat exchanger can be reduced. Therefore, noise can be reduced.
[0031]
Furthermore, in addition to the four side walls 1a and 1b of the air conditioner main body 1, the header wall 11 and the dividing plate 10 enter, and the struts increase, whereby the strength increases with respect to the load in the height direction of the air conditioner main body 1. Therefore, the air conditioner can be hardly damaged even during transportation or stacking.
[0032]
As described above, according to the present invention, it is possible to obtain a ceiling-embedded air conditioner that has high heat exchange performance, low noise, easy temperature control of the blowout flow, and high strength.
On the other hand, when the heat exchange performance is the same as that of a conventional ceiling-mounted air conditioner and the noise level is the same, the height of the heat exchanger can be increased and the height can be lowered. Therefore, it is possible to reduce the height of the air conditioner main body without deteriorating noise and to obtain an effect that can be made compact.
[0033]
Embodiment 2. FIG.
Hereinafter, the ceiling-embedded air conditioner according to Embodiment 2 of the present invention will be described with reference to FIG.
FIG. 4 shows a horizontal sectional view of the air conditioner of the second embodiment, and corresponds to FIG. 3 of the first embodiment. The main configuration of the air conditioner is the same as that of the first embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.
[0034]
In FIG. 4, the air conditioner body 1 is embedded in the back of the ceiling, the turbo fan 3 and the heat exchanger 6 are erected inside the air conditioner body 1, and the heat exchanger 6 is a flat plate heat exchanger (air Two rows of heat exchangers for the flow) are formed by bending so as to have a substantially rhombus shape at the same time. And the decorative panel 2 from the heat exchanger 6 leeward side of the air conditioner main body 1 by the split plate 10 and the header wall 11 extended in the direction of the short side plate 1b of the air conditioner main body 1 in combination with the heat exchanger mounting member. The blowout air passage 16 on the windward side of the heat exchanger 6 communicating with the air outlet 2a is divided into two.
[0035]
By forming the heat exchanger 6 in this way, the two flat plate-shaped heat exchangers 6 as shown in the first embodiment are curved into “U” and “U” shapes. After forming the heat exchanger 6, one end of the heat exchanger 6 is fixed with the side plate 7, and the other end is fixed with the header 8 and the distributor 9. Since it is not necessary to fix the heat exchanger to the side plate for forming the “reverse-shaped” heat exchanger in a substantially rhombus shape, labor savings, improvement in work efficiency can be achieved, and human cost can be reduced. Therefore, an inexpensive air conditioner can be provided.
[0036]
Embodiment 3 FIG.
Hereinafter, a ceiling-embedded air conditioner according to Embodiment 3 of the present invention will be described with reference to FIGS.
FIG. 5 is a horizontal sectional view of the ceiling-embedded air conditioner, and FIG. 6 is a longitudinal sectional view taken along the line BB of FIG. The main configuration of the air conditioner is the same as that of the first embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.
[0037]
As shown in FIG. 1 of the first embodiment, the ceiling-embedded air conditioner according to the third embodiment has a rectangular makeup at the lower part of the rectangular parallelepiped air conditioner body 1 embedded in the back of the ceiling. Panel 2 is attached and faces room 15. There are a total of two rectangular outlets 2a along the long side 2d only on the long side 2d side of the rectangular decorative panel 2, and each outlet 2a is vertically A directional wind vane 2c is provided. In addition, a two-way outlet ceiling in which a lattice-like suction grill 2b serving as an air inlet to the air conditioner body 1 is disposed near the center of the decorative panel 2 so as to be sandwiched between the two rectangular outlets 2a. It is an embedded air conditioner.
[0038]
As shown in FIGS. 5 and 6, the air conditioner main body 1 includes a turbo fan 3, a motor 4 for driving the turbo fan, and a bell that constitutes an air guide path from the suction grille 2 b to the turbo fan 3. A mouse 5 is provided. The heat exchanger 6 is composed of a heat exchanger 6 having two rows and a “U-shaped” heat exchanger 6 a that has a curved shape in the vicinity of the turbo fan 3 and does not follow the turbo fan at the other portions. A pair of “shape” heat exchangers 6 b are erected so as to sandwich the turbofan 3. Further, the far portion 6e of the turbo fan 3 of the heat exchanger 6 is formed in a three-row state in which the number of heat exchanger rows is large. One end of each heat exchanger 6a, 6b is a side plate 7 and the other end is a header 8 and The heat exchanger 6 as a whole is connected to the distributor 9 and has a substantially rhombus shape.
Further, the obtuse angle-side apexes 6c and 6d of the heat exchanger 6 are arranged so as to be near the center of the long side plate 1a of the air conditioner body 1, and further from the side plate 7 to the air conditioner body 1 of the air conditioner body 1. The dividing plate 10 extending in the direction of the short side plate 1b and the header wall 11 containing the header 8 and the distributor 9 communicate with the air outlet 2a of the decorative panel 2 from the upper side of the heat exchanger 6 of the air conditioner body 1. The blowing air passage 16 on the leeward side of the heat exchanger 6 is divided into two.
[0039]
In the lower part of the heat exchanger 6, a drain pan 12 that receives drain water that is condensed water, an electric box 13 that houses a control board that controls the operation of the motor 4 and the angle of the up-down direction wind vane 2c, and the like are disposed. The
Further, the turbo fan 3 is attached to a main plate 3b formed integrally with a hub 3c that fixes the rotation shaft of the motor 4 with a backward blade 3a that is opposite to the rotation direction A, and faces the main plate 3b to the blade 3a. The turbo fan 3 as a whole is constituted by a funnel-shaped shroud 3d that forms the air guide flow path.
During operation, after the air in the room is sucked from the suction grill 2b by the turbo fan 3 driven by the motor 4 and rotating in the direction of arrow A as shown in FIGS. 5 and 6, dust and the like are removed by the filter 14, It passes through the bell mouth 5 and is sucked into the turbo fan 3. Thereafter, the air blown out from the turbo fan 3 is heated or cooled by the heat exchanger 6 and blown out to the room 15 to be air-conditioned while the air direction is changed from the air outlet 2a by the vertical air direction vane 2c.
[0040]
Thus, by configuring the ceiling-embedded air conditioner, the conventional ceiling-embedded air conditioner having the flat plate heat exchanger 106 shown in FIGS. 26 and 27, or the turbo fan 103 shown in FIG. Compared with a conventional ceiling-embedded air conditioner in which a circular heat exchanger 106 is arranged around the heat exchanger area, the area of the heat exchanger can be enlarged, and the number of heat exchanger rows in the vicinity of the turbo fan 3 is reduced. Since the increase in the ventilation resistance that contributes is small, noise deterioration is small and the performance of the heat exchanger during cooling and heating can be improved. Alternatively, when the heat exchange performance is the same as the conventional one, the amount of blown air can be reduced, so that noise can be reduced. In addition, when the heat exchanger performance and the noise value are the same as the conventional one, the height direction of the heat exchanger area can be reduced, so that the air conditioner main body height H can be reduced and downsizing can be achieved.
[0041]
As described above, according to the present invention, a ceiling-embedded air conditioner having high heat exchange performance, low noise, or a compact ceiling can be obtained.
[0042]
Embodiment 4 FIG.
Hereinafter, a ceiling-embedded air conditioner according to Embodiment 4 of the present invention will be described with reference to FIGS.
7 is a schematic view of the installation of the ceiling-embedded air conditioner as viewed from the room, FIG. 8 is a longitudinal sectional view of FIG. 7, and FIG. 9 is a horizontal sectional view of FIG.
As shown in FIGS. 7 to 9, a square-shaped decorative panel 2 is attached to the lower part of the cubic air conditioner body 1 embedded in the back of the ceiling and faces the room 15. In the vicinity of the center of the decorative panel 2, there are four lattice-shaped suction grilles 2 b that serve as air inlets to the air conditioner body 1 and four rectangular air outlets 2 a formed along each side of the decorative panel 2. Furthermore, each air outlet 2a is a four-direction blowout ceiling embedded air conditioner having one vertical vane 2c in the vertical direction.
[0043]
The air conditioner body 1 has a turbo fan 3, a motor 4 for driving the turbo fan, a bell mouth 5, and the turbo fan 3 has a parallel portion with the air conditioner body side wall 1 a. A square heat exchanger 6 is erected, and is formed in a state where the number of rows of heat exchangers is one more in the lower portion 6f on the blower outlet side of the decorative panel 2 than the blower outlet 3e of the turbofan of the heat exchanger 6. ing.
In the lower part of the heat exchanger 6, a drain pan 12 that receives drain water that is condensed water, an electrical component box 13 that houses a control board that controls the operation of the motor 4 and the angle of the up-down direction wind vane 2c, and the like are disposed. .
During operation, the turbo fan 3 driven by the motor 4 and rotated in the direction of arrow A sucks air in the room 15 from the suction grille 1b and removes dust and the like by the filter 14, and then passes through the bell mouth 5 to pass through the turbofan. 3 is sucked into. Thereafter, the air blown out from the turbo fan 3 is heated or cooled by the heat exchanger 6 and blown out to the room 15 to be air-conditioned while the air direction is changed from the air outlet 2a by the vertical air direction vane 2c.
At this time, the vertical direction wind vanes 2c can change the angle independently one by one.
[0044]
Thus, by configuring the ceiling-embedded air conditioner, the conventional air conditioner body shown in FIG. 31 can expand the heat exchanger area compared to the cubic-shaped ceiling-embedded air conditioner, Since the area of the heat exchanger is enlarged even at a portion where the flow velocity in the lower part of the heat exchanger 6 is lower than the blower outlet 3e of the turbofan, the heat exchange amount with respect to the blown air amount is increased, and the heat exchange efficiency can be improved.
In addition, the heat exchanger 6 is not added near the turbofan outlet 3e, and the increase in ventilation resistance contributing to the turbofan is minimal, so that the heat exchanger performance during cooling and heating can be improved while maintaining almost the same noise. .
[0045]
In addition, the blowout air passage 16 from the heat exchanger 6 to the air outlet 2a has an elbow air passage shape, and heat exchange performance can be improved while the passage flow velocity in the lower part of the heat exchanger 6 is small. There is no increase in ventilation resistance in the blowout air passage 16 without obstructing the flow from above the exchanger. As described above, according to the present invention, it is possible to obtain a ceiling-embedded air conditioner having high heat exchange performance while maintaining almost the same noise.
[0046]
Embodiment 5. FIG.
Hereinafter, a ceiling-embedded air conditioner according to Embodiment 5 of the present invention will be described with reference to FIGS.
10 and 11 show an example of the ceiling-embedded air conditioner of the present invention, FIG. 10 is a longitudinal sectional view of the ceiling-embedded air conditioner, and FIG. 11 is a horizontal sectional view of FIG.
The main configuration of the air conditioner is the same as that of the fourth embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.
[0047]
A square-shaped decorative panel 2 is attached to the lower part of a cubic air conditioner body 1 embedded in the back of the ceiling and faces the room 15. In the vicinity of the center of the decorative panel 2, there are four lattice-shaped suction grilles 2 b that serve as air inlets to the air conditioner body 1 and four rectangular air outlets 2 a formed along each side of the decorative panel 2. Furthermore, each air outlet 2a is a four-direction blowout ceiling embedded air conditioner having one vertical vane 2c in the vertical direction.
The air conditioner main body 1 has a turbo fan 3, a motor 4 for driving the turbo fan 3, a bell mouth 5, and a portion parallel to the air conditioner main body side wall 1 a around the turbo fan 3. A square-shaped heat exchanger 6 is erected, and is divided into a turbofan blower outlet 3e vicinity 6g and a blower outlet 3e lower part 6h of the heat exchanger 6.
Moreover, it is formed in a state in which the fin pitch of the lower portion 6h is smaller than the air outlet 3e in comparison with the portion 6g near the air outlet 3e of the turbofan of the heat exchanger 6. Therefore, the heat exchanger 6 is composed of two types of upper and lower combinations of a portion 6g having a large fin pitch and a portion 6h having a small fin pitch.
[0048]
Thus, by configuring the ceiling-embedded air conditioner, the air conditioner main body 101 shown in FIG. 31 of the related art can expand the heat exchanger area compared to the cubic-shaped ceiling-embedded air conditioner, Furthermore, since the heat exchanger area is enlarged even at a portion where the flow velocity in the lower part of the heat exchanger 6 is lower than the blower outlet 3e of the turbofan, the heat exchange amount with respect to the blown air amount is increased, and the heat exchange efficiency can be improved.
Also, since the fin pitch of the heat exchanger 6 is not reduced in the vicinity of the blower outlet 3e of the turbofan, the increase in ventilation resistance contributing to the turbofan 3 is small, improving the heat exchanger performance during cooling and heating, and maintaining noise Heat exchange performance can be improved.
In addition, the blowout air passage 16 from the heat exchanger 6 to the air outlet 2a has an elbow air passage shape, and heat exchange performance can be improved while the passage flow velocity in the lower part of the heat exchanger 6 is small. An air conditioner that does not hinder the flow from above the exchanger and does not increase the ventilation resistance in the blowout air passage 16 can be obtained.
As described above, by forming the heat exchanger, a ceiling-embedded air conditioner with high heat exchange performance and good heat exchange efficiency can be obtained without deteriorating noise.
[0049]
Embodiment 6 FIG.
Hereinafter, the ceiling-embedded air conditioner according to Embodiment 6 of the present invention will be described with reference to FIGS.
12-14 shows an example of the ceiling-embedded air conditioner of this invention, FIG. 12 is a longitudinal cross-sectional view of a ceiling-embedded air conditioner, FIG. 13 is horizontal in DD section of FIG. 14 is a horizontal sectional view taken along the line EE in FIG. The main configuration of the air conditioner is the same as that of the fourth embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.
[0050]
Inside the air conditioner main body 1, a turbo fan 3, a motor 4 for driving the turbo fan 3, a bell mouth 5, and a heat exchanger 6 are installed around the turbo fan 5. The heat exchanger 6 is divided into an upper heat exchanger 6i on the top side of the air conditioner and a lower heat exchanger 6j on the lower side of the decorative panel, with the position across the blower outlet 3e of the turbofan as a boundary. The distance L1 between the exchanger 6i and the turbo fan 3 is arranged to be larger than the distance L2 between the lower heat exchanger 6j and the turbo fan 3. Further, a drain pan 12a that receives drain water generated when air is condensed in each of the heat exchangers 6i and 6j is disposed between the upper heat exchanger 6i and the lower heat exchanger 6j and on the lower surface of the lower heat exchanger 6j. , 12b are disposed.
[0051]
By forming the heat exchanger 6 and the drain pan 12 in this way, the distance L1> L2 is different between the turbo fan 3, the upper heat exchanger 6i, and the lower heat exchanger 6j, so that the flow blown from the turbo fan 3 is the turbo The timing of reaching the upper and lower heat exchangers 6i, 6j from the vicinity of the fan outlet 3e changes, and heat is generated at the same timing in the vicinity of the turbo fan outlet 103e as in the conventional four-way outlet ceiling embedded air conditioner of FIG. There is no flow reaching the exchanger 106. Therefore, the timing of the pressure fluctuation received in the height direction of the blower outlet 3e of the turbofan changes, the pressure fluctuation is relaxed, and the noise can be reduced.
[0052]
Further, when the heat exchanger 106 is disposed at the same position in the height direction as in the conventional air conditioner of FIG. 32, the drain water generated by the condensation of air in the cooling heat exchanger 106 is heated. Since it adheres to the fin surface of the exchanger 6 and flows downward, in the lower part of the air conditioner of the heat exchanger 6, the condensed drain water and the drain water flowing down from the upper part of the air conditioner of the heat exchanger 6 The liquid film on the fin surface of the heat exchanger 6 becomes thick, the heat exchange efficiency deteriorates, the ventilation resistance increases, and the noise worsens. For this reason, the noise value changes greatly between heating when the fin surface is dry and cooling when it is wet.
However, since the heat exchanger 6 is divided into two in the height direction and the drain pan 12a is disposed between the upper heat exchanger 6i and the lower heat exchanger 6j as in the present invention, the upper heat exchanger 6i Since the drain water condensed in step S3 does not flow down to the lower heat exchanger 6j, the heat exchange efficiency does not deteriorate, and the liquid film does not become thicker. Therefore, the increase in ventilation resistance is suppressed, and the amount of noise deterioration can be reduced. Furthermore, the difference in noise value during cooling and heating can be reduced.
[0053]
As described above, it is possible to obtain a ceiling-embedded air conditioner that suppresses deterioration of the noise value during cooling, has a small difference in noise value during cooling and heating, and has high heat exchange efficiency even during cooling.
[0054]
Embodiment 7 FIG.
Hereinafter, the ceiling-embedded air conditioner according to Embodiment 7 of the present invention will be described with reference to FIGS.
15 to 17 show an example of a ceiling-embedded air conditioner according to the present invention, FIG. 15 is a longitudinal sectional view of the ceiling-embedded air conditioner, and FIG. 16 is a horizontal section taken along line FF in FIG. FIGS. 17A and 17B are horizontal sectional views taken along the line GG in FIG. The main configuration of the air conditioner is the same as that of the fourth embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.
[0055]
15-17, the square-shaped decorative panel 2 is attached to the lower part of the cube-shaped air conditioner main body 1 embed | buried under the ceiling, and faces the room. In the vicinity of the center of the decorative panel 2, there are four lattice-shaped suction grilles 2 b that serve as air inlets to the air conditioner body 1 and four rectangular air outlets 2 a formed along each side of the decorative panel 2. Furthermore, each air outlet 2a is a four-direction blowout ceiling embedded air conditioner having one vertical vane 2c in the vertical direction.
The air conditioner body 1 has a turbo fan 3, a motor 4 for driving the turbo fan 3, a bell mouth 5, and a heat exchanger 6 around the turbo fan 3. Of the square heat exchangers 6i and 6j, the upper heat exchanger 6i in the upper part on the ceiling side of the air conditioner body is arranged so that the curved portion of the heat exchanger is near the center of the side plate 1c of the air conditioner body 1. The plane part of the lower heat exchanger 6j in the lower part on the air conditioner decorative panel side is arranged along the side plate 1c of the air conditioner body. Accordingly, the upper heat exchanger 6i and the lower heat exchanger 6j are arranged in the vertical direction with a positional relationship shifted by about 90 ° about the turbofan shaft.
And the drain pan 12 which receives the drain water which is the condensed water of the heat exchanger 6 includes an upper drain pan 12a formed so as to cover the lower portion of the upper heat exchanger 6i and the upper surface of the lower heat exchanger 6j, and a lower heat It is composed of a lower drain pan 12b formed so as to cover the lower part of the exchanger 6j, and is arranged so as to close a gap between the upper heat exchanger 6i and the lower heat exchanger 6j, thereby constituting a blowout air passage 16. .
[0056]
By forming the heat exchangers 6i and 6j and the drain pans 12a and 12b in this way, the portions of the flat portion of the heat exchanger 6 that are close to the turbo fan 3 are staggered in the vertical height direction of the heat exchanger 6, Since the timing at which the blown-out flow of the turbo fan 3 flows into the heat exchanger 6 changes in the heat exchanger height direction, the pressure fluctuation received by the turbo fan 3 from the heat exchanger 6 is diffused and the noise can be reduced. As a result, the amount of air can be increased by the amount of noise reduction, so the amount of heat exchange can be increased and the heat exchange efficiency can be improved.
[0057]
Moreover, since the upper and lower heat exchanger curved portions are staggered by configuring as in the present invention, the wind speed distribution in the blower outlet longitudinal direction is made uniform, and the temperature distribution in the blower outlet 2a is made uniform, The possibility of condensation on the up-down direction wind vane 2c during cooling is suppressed. As a result, there is no possibility of condensation water dropping into the room 15 where the air conditioner is installed, and the quality is improved.
[0058]
Furthermore, since the heat exchanger 6 is divided into two in the height direction and the drain pan 12a is disposed between the upper heat exchanger 6i and the lower heat exchanger 6j, the heat exchanger 6 is condensed above the heat exchanger as in the prior art. Further, since the drain water does not flow down to the lower side of the heat exchanger and the liquid film does not become thick, the heat exchange efficiency does not deteriorate, the increase in ventilation resistance is further suppressed, and the amount of noise deterioration can be reduced. Furthermore, the difference in noise value during cooling and heating can be reduced.
[0059]
As described above, according to the present invention, a ceiling-embedded air conditioner with low noise, high heat exchange efficiency during cooling and heating, and high quality can be obtained.
[0060]
Embodiment 8 FIG.
Hereinafter, a ceiling-embedded air conditioner according to Embodiment 8 of the present invention will be described with reference to FIGS.
18 to 20 show an example of a ceiling-embedded air conditioner according to the present invention, FIG. 18 is a longitudinal sectional view of the ceiling-embedded air conditioner, FIG. 19 is a horizontal sectional view of FIG. 18, and FIG. 4 is a perspective view of the panel 2. FIG. The main configuration of the air conditioner is the same as that of the first embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.
[0061]
18 and 19, a rectangular decorative panel 2 is attached to the lower part of a rectangular parallelepiped air conditioner body 1 embedded in the ceiling, facing the room 15, and each long side of the rectangular decorative panel 2. Only the side 2d has two rectangular outlets 2a each along the long side 2d, and each outlet 2a is provided with a vertical wind vane 2c one by one. . In addition, a two-way outlet ceiling in which a lattice-like suction grill 2b serving as an air inlet to the air conditioner body 1 is disposed near the center of the decorative panel 2 so as to be sandwiched between the two rectangular outlets 2a. It is an embedded air conditioner.
[0062]
Then, as shown in FIGS. 18 to 20, the two rectangular outlets 2 f of the decorative panel 2 attached to the lower surface of the air conditioner body 1 protrude and are inserted into the air conditioner body 1, and the heat exchanger 6. A part of the blowout air passage 16 from the blower outlet 2a of the decorative panel is configured. Further, a wind direction vane 2g in the left-right direction that can change the wind direction in the longitudinal direction of the air outlet 2f of the decorative panel is disposed. Each of the right and left wind direction vanes 2g is connected by a link rod 2h so that the vane motor 18 can change the angle. Furthermore, since the up-down direction wind direction vane 2c is arrange | positioned at the blower outlet 2a of the decorative panel, the up-down / left-right wind direction can be changed.
[0063]
By forming the decorative panel in this way, the blowing range of the ceiling-embedded air conditioner is expanded, and the decorative panel of the two-way blowing-embedded ceiling air conditioner shown in FIGS. Since not only the short direction of the rectangular blower outlet but also the longitudinal direction can be changed, the temperature distribution in the room is made uniform and the comfort is improved.
[0064]
【The invention's effect】
As described above, according to the first aspect of the present invention, a turbofan and a heat exchanger are erected so as to surround the turbofan inside the air conditioner body embedded in the ceiling, and the air conditioner In a ceiling-embedded air conditioner provided with a decorative panel having a suction port and an air outlet on the lower surface of the machine main body, a rectangular shape corresponding to the rectangular parallelepiped shape of the air conditioner main body is provided on the long side. The pair of air outlets and a pair of "U" shape and "U" shape that do not follow the turbo fan in the vicinity of the turbo fan and the turbo fan are positioned so as to sandwich the turbo fan. From the opposing side of the rhombus-shaped heat exchanger, the header wall for distributing and connecting the refrigerant to the heat exchanger and the header wall, and the header wall of the heat exchanger to the side plate side of the air conditioner body Extended A split plate, the obtuse angle side two apexes of the substantially rhombus-shaped heat exchanger are disposed so as to be near the center of the long side plate of the air conditioner body, and the split plate and the header wall Therefore, the blowout air passage communicating from the leeward side of the heat exchanger to the pair of air outlets of the decorative panel is divided into two, and the number of rows of the heat exchanger is greater in the portion far from the turbofan than in the vicinity. The heat exchanger has a roughly rhombus shape, which makes it possible to expand the heat exchanger area compared to conventional ceiling-mounted air conditioners, lower ventilation resistance, and reduce the number of heat exchanger rows near the turbofan, contributing to the turbofan. Since the increase in ventilation resistance is small, noise deterioration is small and the performance of the heat exchanger during cooling and heating can be improved. Alternatively, when the heat exchange performance is the same as the conventional one, the amount of blown air can be reduced, so that noise can be reduced. Moreover, when the heat exchanger performance and the noise value are the same as the conventional one, the height direction of the heat exchanger area can be reduced, so that the height of the air conditioner main body can be reduced and downsizing can be achieved. Therefore, a ceiling-embedded air conditioner having high heat exchange performance, low noise, or a compact ceiling can be obtained.
[0065]
According to the invention of claim 2, since the heat exchanger has a flat plate shape and is formed by bending or bending so as to have a substantially rhombus shape, the heat exchange of two flat plate shapes Compared to the case where the heat exchanger is curved and formed into a “U” or “U” shape, one end of the heat exchanger is fixed with a side plate and the other end is fixed with a header / distributor to form a substantially rhombus shape. No plate is required, the number of parts can be reduced, and it is not necessary to fix the heat exchanger to the side plate to form the “U” and “U” shape heat exchangers in a roughly diamond shape. Thus, the work efficiency can be improved and the human cost can be reduced. Therefore, an inexpensive air conditioner can be provided.
[0068]
Furthermore, according to the invention which concerns on Claim 3, a heat exchanger is erected so that the turbo fan and this turbo fan may be enclosed in the inside of the air conditioner main body embed | buried under the ceiling, and the lower surface of the said air conditioner main body is provided. In a ceiling-embedded air conditioner having a decorative panel having a suction port and a blower outlet, the heat exchanger is divided into two parts, an upper part and a lower part, at a position across the blower outlet of the turbofan. The upper heat exchanger and the lower heat exchanger are disposed so that a distance between the upper heat exchanger and the blower outlet of the turbofan is larger than a distance between the lower heat exchanger and the upper heat exchanger. Since the drain pan that receives the drain water generated in the upper heat exchanger is disposed between the turbo fan, the distance between the turbo fan, the upper heat exchanger, and the lower heat exchanger is different, and the flow blown from the turbo fan is the turbo fan Near the air outlet Since the timing of reaching the vertical heat exchanger is changed, can reduce noise is relieved pressure fluctuation timing is changed in pressure fluctuation received by the height direction of the air outlet of the turbo fan.
In addition, the heat exchanger is divided into two in the height direction, and a drain pan that receives drain water generated by the upper heat exchanger is arranged between the upper heat exchanger and the lower heat exchanger, so that the upper heat exchange Since the drain water condensed in the cooler does not flow down to the lower heat exchanger, the heat exchange efficiency does not deteriorate, and further, the liquid film does not become thick, so the increase in ventilation resistance is suppressed and the amount of noise deterioration can be reduced. Furthermore, the difference in noise value during cooling and heating can be reduced.
As a result, it is possible to obtain a ceiling-embedded air conditioner that suppresses deterioration of the noise value during cooling, has a small difference in noise value during cooling and heating, and has high heat exchange efficiency even during cooling.
[0069]
Furthermore, according to the invention which concerns on Claim 4, the heat exchanger is standingly arranged so that this turbo fan may be enclosed in the inside of the air conditioner main body embed | buried under the ceiling, and the lower surface of the said air conditioner main body is provided. In the ceiling-embedded air conditioner including a decorative panel having a suction port and a blower outlet, the heat exchanger is divided into two parts, an upper part and a lower part, at a position across the blower outlet of the turbofan, The curved portion of the upper heat exchanger disposed in the upper portion is disposed near the center of the side plate of the air conditioner, and the flat portion of the lower heat exchanger disposed in the lower portion is the side plate. Therefore, the portion of the heat exchanger that is close to the turbofan in the plane portion is staggered in the height direction of the heat exchanger, and the blowout flow of the turbofan flows into the heat exchanger. Timing is in the heat exchanger height direction Because of, it can reduce noise pressure fluctuations are spread turbofan receives from the heat exchanger. As a result, the amount of air can be increased by the amount of noise reduction, so the amount of heat exchange can be increased and the heat exchange efficiency can be improved.
In addition, the curved portions of the heat exchanger are staggered, and the wind speed distribution in the longitudinal direction of the air outlet is made uniform, so that the temperature distribution in the air outlet is made uniform, and the possibility of dew condensation on the vertical wind direction vanes during cooling is suppressed. As a result, there is no possibility of condensation water dropping into the room where the air conditioner is installed, and the quality is improved.
[0070]
Furthermore, according to the invention which concerns on Claim 5, the blower outlet part of the said makeup | decoration panel protrudes in the blower air path of the said air conditioner main body, and the horizontal direction wind direction vane is arrange | positioned in the blower outlet part of the said decorative panel. As there is a conventional two-way blowout ceiling embedded air conditioner, not only the short direction of the rectangular outlet of the decorative panel but also the longitudinal direction can be changed, so the temperature distribution in the room is uniform To improve comfort.
[Brief description of the drawings]
FIG. 1 is an external view of a ceiling-embedded air conditioner according to Embodiment 1 of the present invention as viewed from a room.
FIG. 2 is a longitudinal sectional view of the ceiling-embedded air conditioner of FIG.
FIG. 3 is a horizontal sectional view of the ceiling-embedded air conditioner of FIG.
FIG. 4 is a horizontal cross-sectional view of a ceiling-embedded air conditioner according to Embodiment 2 of the present invention.
FIG. 5 is a horizontal sectional view of a ceiling-embedded air conditioner according to Embodiment 3 of the present invention.
6 is a longitudinal sectional view taken along a section BB in FIG.
FIG. 7 is a schematic view of installation of a ceiling-embedded air conditioner according to Embodiment 4 of the present invention as viewed from a room.
8 is a longitudinal sectional view of the ceiling-embedded air conditioner of FIG.
9 is a horizontal sectional view of the ceiling-embedded air conditioner of FIG.
FIG. 10 is a longitudinal sectional view of a ceiling-embedded air conditioner according to Embodiment 5 of the present invention.
11 is a horizontal sectional view of the ceiling-embedded air conditioner of FIG.
FIG. 12 is a longitudinal sectional view of a ceiling-embedded air conditioner according to Embodiment 6 of the present invention.
13 is a horizontal sectional view taken along a section DD in FIG.
14 is a horizontal sectional view taken along a section EE in FIG.
FIG. 15 is a longitudinal sectional view of a ceiling-embedded air conditioner according to Embodiment 7 of the present invention.
16 is a horizontal sectional view taken along a section FF in FIG.
17 is a horizontal sectional view taken along a section GG in FIG.
FIG. 18 is a longitudinal sectional view of a ceiling-embedded air conditioner according to Embodiment 8 of the present invention.
FIG. 19 is a horizontal sectional view of the ceiling-embedded air conditioner of FIG.
FIG. 20 is a perspective view of a decorative panel according to Embodiment 8 of the present invention.
FIG. 21 is an external view of the installation of a conventional ceiling-embedded air conditioner viewed from a room.
22 is a longitudinal sectional view of FIG. 21. FIG.
23 is a horizontal sectional view of FIG.
FIG. 24 is an external view of the installation of a second conventional ceiling-embedded air conditioner as viewed from the room.
25 is a longitudinal sectional view of FIG. 24. FIG.
26 is a horizontal sectional view of FIG. 25. FIG.
FIG. 27 is a horizontal sectional view of a two-way blown ceiling embedded air conditioner using a conventional third turbofan.
FIG. 28 is a horizontal sectional view of a ceiling-embedded air conditioner in which a U-shaped heat exchanger is erected around a conventional fourth turbofan.
FIG. 29 is a horizontal sectional view of a ceiling-embedded air conditioner provided with a conventional fifth circular heat exchanger.
FIG. 30 is a horizontal sectional view of a ceiling-embedded air conditioner in which a conventional heat exchanger having a sixth waveform is installed.
FIG. 31 is an external appearance view of a conventional seventh ceiling-embedded air conditioner as viewed from the room.
32 is a longitudinal sectional view of the ceiling-embedded air conditioner of FIG. 31. FIG.
33 is a horizontal sectional view of FIG. 32. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ceiling embedded type | mold air conditioner main body, 1a Long side side plate of an air conditioner main body, 1b Short side side plate of an air conditioner main body, 1c Side plate of an air conditioner main body, 2 Cosmetic panel, 2a Outlet, 2b Suction Mouth, 2c Vertical wind vane, 2d Cosmetic panel long side, 2e Cosmetic panel short side, 2f Outlet, 2g Horizontal wind vane, 2h Link rod, 3 Turbo fan, 3a blade, 3b Main plate, 3c hub, 3d shroud, 3e Turbo fan outlet, 4 motor, 5 bell mouth, 6 heat exchanger, 6a U-shaped heat exchanger, 6b inverted U-shaped heat exchanger, 6c obtuse angle apex of U-shaped heat exchanger, 6d inverted Obtuse angle apex of the V-shaped heat exchanger, 6e turbo fan far part, 6f heat exchanger in the lower part of the turbo fan outlet, 6g upper heat exchanger near the turbo fan outlet, 6h turbo fan outlet Lower heat exchanger with smaller fin pitch than upper heat exchanger 6g, 6i upper heat exchanger, 6j lower heat exchanger, 7 side plate, 8 header, 9 distributor, 10 dividing plate, 11 header wall, 12 drain pan 12a Upper drain pan, 12b Lower drain pan, 13 Electrical box, 14 Filter, 15 Room, 16 Air outlet, 17 Drain pump, 18 Vane motor, 19 Suction air passage, 22 Illumination, 101 Ceiling embedded air conditioner body, 101a Long side plate of the air conditioner body, 101b Short side plate of the air conditioner body, 101c Side plate of the air conditioner body, 101d Top plate of the air conditioner, 102 Cosmetic panel, 102a Air outlet, 102b Suction port, 102c Vertical wind vane, 102d Long side of decorative panel, 102e Short side of decorative panel, 102f Outlet, 102g Left Right wind vane, 102h link rod, 102i suction panel, 103 turbo fan, 103a backward blade, 103b main plate, 103c hub, 103d shroud, 103e turbo fan outlet, 104 motor, 105 bell mouth, 106 heat exchanger, 107 Side plate, 108 header, 109 distributor, 110 dividing plate, 111 header wall, 112 drain pan, 113 electrical box, 114 filter, 115 room, 116 air outlet, 117 drain pump, 118 vane motor, 119 suction air path, 120 Multi-blade fan, 120a main plate, 120b Multi-blade fan side plate, 120c blade, 120d impeller, 120e suction bell mouth, 120f casing outlet, 120g casing, 121 dividing plate, 122 illumination, A fan rotation direction, C Fan blowout flow, H Air conditioner body height, L1 Distance between turbofan outer periphery and upper heat exchanger, L2 Distance between turbofan outer periphery and lower heat exchanger.

Claims

Inside the air conditioner body embedded in the ceiling, a turbo fan and a heat exchanger are installed so as to surround the turbo fan, and a decorative panel having a suction port and an air outlet on the lower surface of the air conditioner body In the ceiling-embedded air conditioner provided, a pair of air outlets on the long side of the rectangular decorative panel corresponding to the rectangular parallelepiped shape of the air conditioner body, and the vicinity of the turbofan are curved and others The part is a diamond-shaped heat exchanger standing upright so that a pair of "U" shape and "U" shape that does not follow the turbo fan sandwiches the turbo fan, and refrigerant flows to the heat exchanger A header wall containing a header and a distributor to be connected, and a dividing plate extending from a side facing the header wall of the heat exchanger to the side plate side of the air conditioner body, and having the substantially rhombus-shaped heat The obtuse angle side of the exchanger The point is disposed so as to be near the center of the long side plate of the air conditioner body, and communicates from the leeward side of the heat exchanger to the pair of outlets of the decorative panel by the dividing plate and the header wall. The blowout air passage is divided into two , and the number of rows of the heat exchangers is greater in the portion far from the turbofan than in the vicinity thereof.

2. The ceiling-embedded air conditioner according to claim 1, wherein the heat exchanger has a flat plate shape and is curved or bent so as to have a substantially rhombus shape.

Inside the air conditioner body embedded in the ceiling, a turbo fan and a heat exchanger are installed so as to surround the turbo fan, and a decorative panel having a suction port and an air outlet on the lower surface of the air conditioner body In the ceiling-embedded air conditioner, the heat exchanger is divided into two parts, an upper part and a lower part, at a position across the blower outlet of the turbofan, and the upper heat exchanger The turbo fan is disposed so that the distance from the blower outlet is larger than the distance from the lower heat exchanger, and is generated in the upper heat exchanger between the upper heat exchanger and the lower heat exchanger. A ceiling-embedded air conditioner having a drain pan for receiving drain water .

Inside the air conditioner body embedded in the ceiling, a turbo fan and a heat exchanger are installed so as to surround the turbo fan, and a decorative panel having a suction port and an air outlet on the lower surface of the air conditioner body In the ceiling-embedded air conditioner provided, the heat exchanger is divided into an upper part and a lower part at a position across the blower outlet of the turbofan, and the upper heat exchanger is disposed in the upper part The curved portion is arranged so as to be near the center of the side plate of the air conditioner, and the flat portion of the lower heat exchanger arranged in the lower portion is arranged along the side plate. Embedded ceiling air conditioner.

The blower outlet part of the said decorative panel protrudes in the blower wind path of the said air conditioner main body, The left-right direction wind direction vane is arrange | positioned at the blower outlet part of the said decorative panel, The Claim 1 thru | or 4 characterized by the above-mentioned. The ceiling-embedded air conditioner according to any one of the above.