JP3731067B2 - Air conditioner indoor unit - Google Patents

Air conditioner indoor unit Download PDF

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Publication number
JP3731067B2
JP3731067B2 JP2002139745A JP2002139745A JP3731067B2 JP 3731067 B2 JP3731067 B2 JP 3731067B2 JP 2002139745 A JP2002139745 A JP 2002139745A JP 2002139745 A JP2002139745 A JP 2002139745A JP 3731067 B2 JP3731067 B2 JP 3731067B2
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JP
Japan
Prior art keywords
indoor unit
heat exchange
space
refrigerant
air conditioner
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Expired - Fee Related
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JP2002139745A
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Japanese (ja)
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JP2003336857A (en
Inventor
淳一 中西
清 井上
英寛 園元
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Daikin Industries Ltd
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Daikin Industries Ltd
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Priority to JP2002139745A priority Critical patent/JP3731067B2/en
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to AU2003235853A priority patent/AU2003235853B2/en
Priority to ES03721034T priority patent/ES2373546T3/en
Priority to PCT/JP2003/005671 priority patent/WO2003098119A1/en
Priority to EP03721034A priority patent/EP1515095B1/en
Priority to AT03721034T priority patent/ATE530856T1/en
Priority to CNB038097176A priority patent/CN1294386C/en
Priority to KR1020047017783A priority patent/KR100605844B1/en
Priority to CN032575602U priority patent/CN2723879Y/en
Publication of JP2003336857A publication Critical patent/JP2003336857A/en
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Publication of JP3731067B2 publication Critical patent/JP3731067B2/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0059Indoor units, e.g. fan coil units characterised by heat exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0043Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0068Indoor units, e.g. fan coil units characterised by the arrangement of refrigerant piping outside the heat exchanger within the unit casing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30Arrangement or mounting of heat-exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0018Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0025Cross-flow or tangential fans

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The present invention is constituted so that sound does not tend to leak out of an indoor unit (93), even if refrigerant circuit parts, such as a motor-operated valve (33a) that forms a noise source, is arranged in the indoor unit (93). The indoor unit (93) of an air conditioner air conditions by the condensation and expansion of a refrigerant, and comprises an indoor heat exchanger and the refrigerant circuit parts. The indoor heat exchanger exchanges heat between the refrigerant and the air, and comprises a front side heat exchanger (41) and a rear side heat exchanger (42). The rear side heat exchanger (42) has an effective length less than the front side heat exchanger (41). The refrigerant circuit parts are parts for changing the flow of the refrigerant, and include the motor-operated valve (33a), a distributor (39), and the like. The refrigerant circuit parts are arranged in a space (SP) created by the difference in the effective lengths of the front side heat exchanger (41) and the rear side heat exchanger (42). <IMAGE>

Description

【0001】
【発明の属する技術分野】
本発明は、空気調和装置の室内機、特に、熱交換器や冷媒回路部品を有し冷媒の凝縮・膨張により空気調和を行う空気調和装置の室内機に関する。
【0002】
【従来の技術】
室内機と室外機とに分けられたセパレート式の空気調和装置には、1台の室外機に対して1台の室内機だけを接続するペア型の空気調和装置と、1台の室外機に対して並列に複数の室内機を接続するマルチ型の空気調和装置とが存在する。
図1に、ペア型の空気調和装置の外観図を示す。ここに示す空気調和装置81では、1つの室外機82に対して1つの室内機83が対応づけられ、冷媒配管や伝送線から成る接続部89によって両者82,83が接続されている。
【0003】
図2に示すように、ペア型の空気調和装置の室内機は、ファンロータ3、熱交換器4、電装品箱30などから構成されている。これらの構成部品は、前面グリル組立体10、前面パネル11、底フレーム12などから構成されるケーシング内に配置される。底フレーム12は、室内の壁面に固定される据付板15に装着され、室内壁などに固定される。前面グリル組立体10の上面にはスリット状の上部吸込口10aが設けられ、前面パネル11にも上方および側方に前面吸込口11aが設けられている。これらの吸込口10a,11aの内方には、空気清浄用のエアフィルタ17が配置される。また、前面グリル組立体10の前面下部には、ファンロータ3によって生成された空気流を吹き出す吹出口が形成される。
【0004】
ファンロータ3は、底フレーム12に形成されたファン収納部12aに配置され、一端が軸受13を介して底フレーム12に取り付けられ、他端がモータ14の回転軸と連結される。このモータ14は、モータ固定部材16によって底フレーム12に固定される。
熱交換器4は、ファンロータ3の前方、上方および後部上方を取り囲むように設けられており、ともに有効長がLである前側熱交換部141と後側熱交換部142とに分割されている。各熱交換部141,142は、左右両端で複数回折り返された伝熱管に多数の放熱フィンが取り付けられたものであり、ファンロータ3の駆動により上部吸込口10aおよび前面吸込口11aから吸い込まれた空気をファンロータ3側に通過させ、伝熱管の内部を通過する冷媒と空気との間で熱交換を行わせるものである。熱交換器4は、冷媒配管を介して室外機からの冷媒配管と接続される。また、前側熱交換部141の下方には、前ドレンパンや吹き出し空気の方向を調整するための羽根などを含むドレンパン組立体18が配置される。
【0005】
なお、熱交換器の前側熱交換部および後側熱交換部の有効長は、必ずしも同じでなくてもよい。例えば、特開2001−82795号公報に開示されているように、熱交換器の前側熱交換部および後側熱交換部の有効長を違うものにすることも可能である。
【0006】
【発明が解決しようとする課題】
上記の図1や図2に示すようなペア型の空気調和装置の室内機と、1台の室外機に対して並列に複数の室内機を接続するマルチ型の空気調和装置で採用される室内機とは、従来それぞれ別々に設計が行われている。このような現状に対し、最近では、ペア型の室内機とマルチ型の室内機との間でパーツ(部品)を共通化しようとする試みが為されている。ペア型とマルチ型とでは熱交換器のスペックが異なることが多いが、ケーシングの部分などを共通化することが考えられる。
【0007】
しかし、ペア型と違い、マルチ型の空気調和装置の室内機には、複数の室内機を個別に発停したり制御したりすることから、内部に電動弁が設けられていることが多い。この電動弁は、室内機の熱交換器に流れる冷媒量を調整する役割を果たすもので、液ガス混合の状態の冷媒が膨張するときなどに比較的大きな音を発する。
【0008】
このマルチ型の室内機に特有の部品である電動弁などの騒音源を、通常のペア型のケーシング内において配置するとすれば、ペア型の室内機において冷媒配管群が集中的に配置される熱交換器の側方の空間に配置することになる。この場合には、同じケーシングを用いるとすると、ペア型の室内機であれば異音がしなくても、マルチ型の室内機になると電動弁などからの異音が室内へと漏れ出ることが想定される。これでは、ペア型の室内機とマルチ型の室内機とでケーシング等の部品を共通化することが難しい。
【0009】
本発明の課題は、騒音源になる電動弁などの冷媒回路部品を室内機の中に配置した場合にも、室内機の外に音が漏れ出にくい空気調和装置の室内機を提供することにある。
【0010】
【課題を解決するための手段】
請求項1に係る空気調和装置の室内機は、冷媒の凝縮・膨張により空気調和を行う空気調和装置の室内機であって、熱交換器と、ファンロータと、冷媒回路部品と、仕切板とを備えている。熱交換器は、冷媒と空気との間で熱交換を行わせるものであって、前側熱交換部と後側熱交換部とを有している。後側熱交換部は、前側熱交換部よりも有効長が短い。ファンロータは、空気調和された空気を室内へと送る。冷媒回路部品は、冷媒の流れを変えるための部品であり、電動膨張弁や分流器などである。冷媒回路部品は、前側熱交換部と後側熱交換部との有効長の違いにより生じるスペースに配置される。仕切板は、そのスペースとファンロータの周囲の空間との間に配置され、スペースからファンロータの周囲の空間への空気の漏れ出しを防止する。
【0011】
ここでは、まず、後側熱交換部の有効長を前側熱交換部の有効長よりも短く構成し、室内機の背面側において所定のスペースを生み出している。そして、冷媒の流れを変えるときに比較的大きな音を発する電動弁や分流器といった冷媒回路部品を、そのスペースに配置するようにしている。このように、ここでは、騒音源となる冷媒回路部品を室内機内部の背面側のスペースに配置するため、室内機の正面側に漏れ出す音の量が少なくなり、室内にいる人に不快感を与えることが抑えられる。
ただ、後側熱交換部の有効長を前側熱交換部の有効長よりも短く構成すると、普通に考えれば有効長が長い前側熱交換部にファンロータの長さを合わせることになる。このため、上記のスペース(前側熱交換部と後側熱交換部との有効長の違いにより生じるスペース)がファンロータの一部と隣接することになる。この場合に、そのスペースとファンロータとの間に何も設けなければ、熱交換器を通過せずに上記のスペースから直接ファンロータに空気が流れ込む恐れがある。
【0012】
これに対し、請求項に係る室内機では、冷媒回路部品が配置されるスペースとファンロータとの間に仕切板を配置しているため、熱交換器を通らない空気がファンロータに流れ込む不具合が抑えられる。
【0013】
請求項2に係る空気調和装置の室内機は、請求項1に記載の室内機であって、室外機および複数の室内機を有する空気調和装置の室内機である。そして、後側熱交換部の有効長を前側熱交換部よりも短くしたことによるスペースに配置される冷媒回路部品は、電動弁を少なくとも含んでいる。電動弁は、複数の室内機に流す冷媒の量を調整するために設けられているものである。
ここでは、マルチ型の空気調和装置の室内機に内蔵されることが多い電動弁が、騒音を閉じこめやすい室内機内部の背面側のスペースに配置される。電動弁は、冷媒量を調整するときに比較的大きな異音を発することがあるが、ここでは室内機の外に音が漏れ出にくい上記のスペースに配置されているため、室内にいる人に異音が大きく聞こえてしまうことがなくなる。
【0014】
請求項3に係る空気調和装置の室内機は、請求項1又は2に記載の室内機であって、冷媒回路部品が配置されるスペースを覆う金属製部材をさらに備えている。この金属製部材は、仕切板とともにスペースを囲う。
ここでは、冷媒回路部品を室内機内部の背面側のスペースに配置して室内機の正面側に漏れ出す音の量を抑えるだけではなく、さらに上記のスペースを金属製部材で覆っている。このため、樹脂製であることが多いケーシングを通過して室内機の外に漏れ出すレベルの大きな異音が冷媒回路部品から発生した場合においても、金属製部材の遮音効果によって、その異音の室内機の外への漏れ出しを小さく抑えることができる。
【0015】
請求項4に係る空気調和装置の室内機は、請求項1から3のいずれかに記載の室内機であって、仕切板は、ファンロータの上方に位置する上下仕切板と、後側熱交換部のスペース側の端部から前方に延びる左右仕切板とを含む。
【0016】
請求項5に係る空気調和装置の室内機は、請求項4に記載の室内機であって、上下仕切板と左右仕切板とが交差する部分からファンロータの周囲の空間へとドレン水が垂れ落ちることを防止するドレン経路をさらに備えている。
【0017】
請求項6に係る空気調和装置の室内機は、冷媒の凝縮・膨張により空気調和を行う空気調和装置の室内機であり、ペア型の空気調和装置の室内機となる場合でもマルチ型の空気調和装置の室内機となる場合でもケーシングが共通とされる室内機であって、熱交換器と、ファンロータとを備えている。熱交換器は、前側熱交換部と、前側熱交換部よりも有効長が短い後側熱交換部とを有し、冷媒と空気との間で熱交換を行わせる。ファンロータは、空気調和された空気を室内へと送る。そして、マルチ型の空気調和装置の室内機となる場合には、冷媒回路部品と、仕切板とをさらに備えることになる。冷媒回路部品は、前側熱交換部と後側熱交換部との有効長の違いにより生じるスペースに配置され、冷媒の流れを変える。仕切板は、スペースとファンロータの周囲の空間との間に配置され、スペースからファンロータの周囲の空間への空気の漏れ出しを防止する。
【0018】
請求項7に係る空気調和装置の室内機は、請求項6に記載の室内機であって、ペア型の空気調和装置の室内機となる場合には、後側熱交換部と前側熱交換部との有効長が同じにされ、仕切板が不要とされる。
【0019】
【発明の実施の形態】
<マルチ型の空気調和装置の概要>
本発明の一実施形態に係る空気調和装置の室内機は、図3に示すようなマルチ型の空気調和装置において用いられる室内機である。このマルチ型の空気調和装置91は、1つの室外機92に対して複数の室内機93〜96が接続されるものである。室外機92と室内機93〜96とは、冷媒配管や伝送線から成る接続部99a〜99dによって接続されている。4台の室内機93〜96は、例えば、家庭内やビル内、店舗内において、それぞれ別の部屋に配置される。
【0020】
<マルチ型の空気調和装置の冷媒回路>
このマルチ型の空気調和装置91の冷媒回路190を、図4に示す。冷媒回路190は、1台の室外機92と、室外機92に並列に接続された4台の室内機93〜96と、冷媒配管とにより構成されている。
室外機92は、圧縮機20、四路切換弁21、室外熱交換器22、アキュムレータ23などを備えている。圧縮機20の吐出側には、圧縮機20の吐出側の吐出管温度を検知するための吐出管サーミスタ24が取り付けられている。また、室外機92には、外気温度を検知するための外気サーミスタ25と、室外熱交換器22の温度を検知するための室外熱交サーミスタ26とが設けられている。
【0021】
各室内機93〜96は、同じ構成を有している。以下、室内機93〜96について、室内機93を例にとって説明する。
室内機93は、互いに直列に接続された室内熱交換器4aおよび電動弁(膨張弁)33aを備えている。電動弁33aは、室内熱交換器4aの冷媒出口側に設けられており室内熱交換器4aに流れる冷媒量を調整する。また、室内機93は、室内温度を検知するための室温サーミスタ31aと、室内熱交換器4aの温度を検知するための室内熱交サーミスタ32aとをそれぞれ備えている。室内熱交換器4aと電動弁33aとの間の配管には、室内熱交換器4aと電動弁33aとの間の液管温度を検知するための液管サーミスタ34aが設けられている。室内熱交換器4aのガス管側(冷媒入口側)には、内部を通過する冷媒温度を検知するガス管サーミスタ35aが設けられている。
他の室内機94,95,96についても室内機93と同様の構成であり、図4において、室内熱交換器、電動弁、各種サーミスタに対して同等の記号を付している。
【0022】
<室内機における部品構成および部品配置>
上記のように、マルチ型の空気調和装置91で使用される室内機93〜96は、電動弁33a〜33dを内蔵している。ここでは、室内機93を例にとって、マルチ型の空気調和装置で使われる室内機について部品の配置を中心にして説明を行う。
【0023】
室内機93では、図5および図6に示すように、ファンロータ3の前方、上方、および後方の一部を覆う室内熱交換器4aが、主として前側熱交換部41および後側熱交換部42から構成されている。後側熱交換部42は、前側熱交換部41よりも有効長が短く、そのモータ14側の端部42bが前側熱交換部41の端部41bよりも室内機93の幅方向中央部分寄りに位置している(図5参照)。これにより、後側熱交換部42の外側(モータ14側の側方)には、比較的大きいスペースSPが確保される。このスペースSPの幅寸法は、前側熱交換部41と後側熱交換部42との有効長の差と概ね同じ寸法であり、100mm〜150mmとなっている。
【0024】
また、室内機93では、前側熱交換部41の上端41aと後側熱交換部42の上端42aとが少し離れる構造が採られており、その間は接続板43が張られている。この接続板43は、前側熱交換部41と後側熱交換部42とを室内熱交換器4aとして一体化してするとともに、室内熱交換器4aの上方から下方のファンロータ3へと前側熱交換部41や後側熱交換部42を通ることなく空気が素通りしてしまうことを防止する役割を果たす。
【0025】
そして、室内機93では、前側熱交換部41と後側熱交換部42との有効長の違いにより生み出されたスペースSPに、電動弁33a、電動弁33aに接続される冷媒配管133、電動弁33aを出た冷媒を室内熱交換器4aの各伝熱流路に分流させる分流器39などを配置している。電動弁33aは、図5に示すように、メンテナンス性の向上を図るため、横向けで配置されている。
【0026】
さらに、室内機93では、電動弁33aなどが配置されるスペースSPを、金属カバー50と、上下仕切板44と、左右仕切板45とにより囲っている。金属カバー50は、スペースSPの上方を覆う第1カバー部51と、第1カバー部51の前端から前側熱交換部41の前面に沿って斜め下方に延びる第2カバー部52と、第1カバー部51の後端から斜め下方に延びスペースSPの後方の覆う第3カバー部53とが一体に形成された板金部材である。この金属カバー50は、主として遮音の目的で設けられている。一方、上下仕切板44および左右仕切板45は、スペースSPに流れ込んだ空気のファンロータ側への漏れ出しを防止するために設けられている金属製の板状部材である。上下仕切板44は、ファンロータ3の上方に位置し、ファンロータ3の周囲のスペースと電動弁33a等が配置されるスペースSPとを仕切っている。左右仕切板45は、後側熱交換部42のスペースSP側の端部42bから垂直に前方に延びる略三角形の部材であり、各辺が後側熱交換部42の端部42b、接続板43のスペースSP側の端部、および上下仕切板44の端部と直交するように接している。
【0027】
また、前側熱交換部41の下端の下方には前ドレンパン61が、後側熱交換部42の下端の下方には後ドレンパン62が、それぞれ配置されている。これらのドレンパン61,62は、図2の従来の底フレーム12およびドレンパン組立体18と同様の構成を有する底フレームやドレンパン組立体に形成されているものであり、室内熱交換器4a等から垂れ落ちるドレン水を受ける役割を果たす。そして、室内機93では、スペースSPを囲う上記の上下仕切板44や左右仕切板45、後側熱交換部42のスペースSP側の端部42bが交差する部分からドレン水がファンロータ3に対して垂れ落ちないように、その部分の下方にドレン経路63を形成している。このドレン経路63は、上下仕切板44と左右仕切板45との交差部分において、金属板(上下仕切板44の一部、左右仕切板45の一部、あるいは、これらの仕切板44,45に装着される別部材)を湾曲させて断面がポケット状になる構造としたものである。これにより、後側熱交換部42の端部42bから左右仕切板45を伝って降りてきたドレン水や、圧力差によりスペースSPから隙間を伝って上下仕切板44と左右仕切板45との交差部分からファンロータ3側にしみ出てきたドレン水が、ドレン経路63に導かれてドレンパン62に流れ込むようになる(図6参照)。
【0028】
<室内機の特徴>
(1)
室内機93では、まず、後側熱交換部42の有効長を前側熱交換部41の有効長よりも短く構成し、室内機93の背面側において所定のスペースSPを生み出している。そして、冷媒の流れを変えるときに比較的大きな音を発する電動弁33aや分流器133といった冷媒回路部品を、そのスペースSPに配置するようにしている。このように、室内機93の後ろ側に電動弁33aなどの騒音源を配置することができているため、音の指向性から判断して、室内にいる人に聞こえる騒音レベルが小さく抑えられるようになる。
【0029】
(2)
室内機93では、電動弁33a等の騒音源となる冷媒回路部品を室内機93の背面側のスペースSPに配置して室内機93の正面側に漏れ出す音の量を抑えるだけではなく、さらにスペースSPを金属カバー43で覆っている。したがって、樹脂製であることが多いケーシングを通過して室内機93の外に漏れ出すレベルの大きな異音が電動弁33aなどから発生した場合においても、金属カバー43の遮音効果によって、その異音が室内機93の外へ漏れ出すことが抑制される。
【0030】
なお、電動弁33aをパテやゴムで覆う従来からの遮音対策も併用することが望ましい。
(3)
室内機93では、後側熱交換部42の有効長を前側熱交換部41の有効長よりも短く構成しているため、前側熱交換部41の有効長に対応しているファンロータ3の長さは、後側熱交換部42よりも長くなっている。これにより、スペースSPは、ファンロータ3のモータ14側の一部分の上方に位置するようになっている。
【0031】
この場合に、スペースSPとファンロータ3との間に何も設けなければ、室内熱交換器4aの各熱交換部41,42のいずれをも通過せずにスペースSPから直接ファンロータ3へと空気が流れ込む恐れがある。
これに対し、室内機93では、電動弁33a等が配置されるスペースSPとファンロータ3との間に上下仕切板44および左右仕切板45を配置しているため、室内熱交換器4aを通らない空気がファンロータ3に流れ込む不具合が抑えられている。
【0032】
(4)
室内機93では、上下仕切板44により空気がスペースSPからファンロータ3へと降りてくることを防ぎ、左右仕切板45により空気がスペースSPから前側熱交換部41と後側熱交換部42の端部42bとの間を通ってファンロータ3へと流れることを防止している。そして、図6に示すように、上下仕切板44および左右仕切板45の下端がドレンパン62の上方に位置しているため、後側熱交換部42の端部42bなどから水滴が仕切板44,45に流れたときにも、その水がドレンパン62に流れ込む。
【0033】
また、ファンロータ3より短い後側熱交換部42の端部42bや両仕切板44,45の交差部分から圧力差などにより隙間を介してファンロータ3側に出るドレン水は、ドレン経路63によってドレンパン62へと導かれる。このため、上記のようにスペースSPを設けて仕切板44,45によってスペースSPを囲った場合においても、ドレン水がファンロータ3へと垂れ落ちる不具合が抑えられる。
【0034】
(5)
室内機93は、電動弁33aを備えており、そのままルームエアコン等のペア型の空気調和装置に流用することは考えにくい。しかし、室内機93の室内熱交換器4aをペア型の室内機用の室内熱交換器と取り替えられるように構造を設計し、ケーシングの部分についてマルチ型とペア型とで共通化を図ることは可能である。
【0035】
例えば、ケーシングを共通としておいて、業務用で使われることの多いマルチ型の室内機においては上記の室内機93のように前側熱交換部と後側熱交換部との有効長が異なる室内熱交換器をセットし、ペア型の室内機においては前側熱交換部と後側熱交換部との有効長が同じ室内熱交換器をセットするように設計を行うことができる。
【0036】
【発明の効果】
請求項1に係る室内機では、後側熱交換部の有効長を前側熱交換部の有効長よりも短く構成し、室内機の背面側において所定のスペースを生み出している。そして、冷媒の流れを変えるときに比較的大きな音を発する電動弁や分流器といった冷媒回路部品を、そのスペースに配置するようにしている。このため、室内機の正面側に漏れ出す音の量が少なくなり、室内にいる人に不快感を与えることが抑えられる。また、請求項に係る室内機では、冷媒回路部品が配置されるスペースとファンロータとの間に仕切板を配置しているため、熱交換器を通らない空気がファンロータに流れ込む不具合が抑えられる。
【0037】
請求項2に係る室内機では、マルチ型の空気調和装置の室内機に内蔵されることが多い電動弁が、騒音を閉じこめやすい室内機内部の背面側のスペースに配置される。電動弁は、冷媒量を調整するときに比較的大きな異音を発することがあるが、ここでは室内機の外に音が漏れ出にくい上記のスペースに配置されているため、室内にいる人に異音が大きく聞こえてしまうことがなくなる。
【0038】
請求項3に係る室内機では、冷媒回路部品を室内機内部の背面側のスペースに配置して室内機の正面側に漏れ出す音の量を抑えるだけではなく、さらに上記のスペースを金属製部材で覆っている。このため、樹脂製であることが多いケーシングを通過して室内機の外に漏れ出すレベルの大きな異音が冷媒回路部品から発生した場合においても、金属製部材の遮音効果によって、その異音の室内機の外への漏れ出しを小さく抑えることができる
【図面の簡単な説明】
【図1】 従来におけるペア型の空気調和装置の外観斜視図。
【図2】 従来における室内機の組立分解図。
【図3】 本発明の一実施形態に係る室内機を含むマルチ型の空気調和装置の概略図。
【図4】 マルチ型の空気調和装置の冷媒回路を示す図。
【図5】 室内機のモータ側部分の内部斜視図。
【図6】 室内機の断面概略図。
【符号の説明】
3 ファンロータ
4a 室内熱交換器
33a 電動弁(冷媒回路部品)
39 分流器(冷媒回路部品)
41 前側熱交換部
42 後側熱交換部
44 上下仕切板(上下仕切部)
45 左右仕切板(左右仕切部)
50 金属カバー(金属製部材)
62 後ドレンパン(ドレンパン)
63 ドレン経路
91 空気調和装置
92 室外機
93〜96 室内機
SP スペース
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an indoor unit of an air conditioner, and more particularly to an indoor unit of an air conditioner that has a heat exchanger and refrigerant circuit components and performs air conditioning by condensing and expanding refrigerant.
[0002]
[Prior art]
The separate type air conditioner divided into indoor units and outdoor units includes a pair type air conditioner that connects only one indoor unit to one outdoor unit, and one outdoor unit. On the other hand, there is a multi-type air conditioner that connects a plurality of indoor units in parallel.
In FIG. 1, the external view of a pair type air conditioning apparatus is shown. In the air conditioner 81 shown here, one indoor unit 83 is associated with one outdoor unit 82, and both the units 82 and 83 are connected by a connecting portion 89 formed of a refrigerant pipe or a transmission line.
[0003]
As shown in FIG. 2, the indoor unit of the pair type air conditioner includes a fan rotor 3, a heat exchanger 4, an electrical component box 30, and the like. These components are arranged in a casing composed of a front grill assembly 10, a front panel 11, a bottom frame 12, and the like. The bottom frame 12 is attached to an installation plate 15 that is fixed to the wall surface of the room, and is fixed to the wall of the room. A slit-like upper suction port 10a is provided on the upper surface of the front grille assembly 10, and the front suction port 11a is also provided on the front panel 11 at the upper side and the side. An air filter 17 for air cleaning is disposed inside the suction ports 10a and 11a. Further, an air outlet for blowing out the air flow generated by the fan rotor 3 is formed in the lower front portion of the front grill assembly 10.
[0004]
The fan rotor 3 is disposed in a fan housing portion 12 a formed in the bottom frame 12, one end is attached to the bottom frame 12 via a bearing 13, and the other end is connected to the rotating shaft of the motor 14. The motor 14 is fixed to the bottom frame 12 by a motor fixing member 16.
The heat exchanger 4 is provided so as to surround the front, upper, and rear upper portions of the fan rotor 3, and is divided into a front heat exchanging portion 141 and a rear heat exchanging portion 142 each having an effective length of L. . Each of the heat exchanging portions 141 and 142 has a plurality of heat radiating fins attached to heat transfer tubes bent back and forth at both left and right ends, and is sucked from the upper suction port 10a and the front suction port 11a by driving the fan rotor 3. The air thus passed is passed to the fan rotor 3 side, and heat is exchanged between the refrigerant passing through the inside of the heat transfer tube and the air. The heat exchanger 4 is connected to the refrigerant pipe from the outdoor unit through the refrigerant pipe. A drain pan assembly 18 including a front drain pan and blades for adjusting the direction of the blown air is disposed below the front heat exchange unit 141.
[0005]
In addition, the effective length of the front side heat exchange part and rear side heat exchange part of a heat exchanger does not necessarily need to be the same. For example, as disclosed in Japanese Patent Application Laid-Open No. 2001-82895, the effective lengths of the front heat exchange unit and the rear heat exchange unit of the heat exchanger can be different.
[0006]
[Problems to be solved by the invention]
The indoor unit employed in the indoor unit of the pair-type air conditioner as shown in FIG. 1 and FIG. 2 and the multi-type air conditioner in which a plurality of indoor units are connected in parallel to one outdoor unit. Conventionally, each machine has been designed separately. Recently, attempts have been made to share parts (parts) between a pair-type indoor unit and a multi-type indoor unit. The specifications of the heat exchangers are often different between the pair type and the multi type, but it is conceivable to share the casing part and the like.
[0007]
However, unlike the pair type, the indoor unit of the multi-type air conditioner is often provided with an electric valve inside because a plurality of indoor units are individually started and stopped or controlled. This motor-operated valve plays a role of adjusting the amount of refrigerant flowing through the heat exchanger of the indoor unit, and emits a relatively loud sound when the refrigerant in a mixed state of liquid gas expands.
[0008]
If a noise source such as a motor-operated valve, which is a component peculiar to this multi-type indoor unit, is arranged in a normal pair-type casing, the heat in which the refrigerant piping group is intensively arranged in the pair-type indoor unit. It will be placed in the space on the side of the exchanger. In this case, if the same casing is used, even if there is no noise in a pair-type indoor unit, abnormal noise from a motorized valve or the like may leak into the room if it becomes a multi-type indoor unit. is assumed. With this, it is difficult to share parts such as casings in the pair type indoor unit and the multi type indoor unit.
[0009]
An object of the present invention is to provide an indoor unit of an air conditioner in which sound hardly leaks out of an indoor unit even when a refrigerant circuit component such as an electric valve that becomes a noise source is arranged in the indoor unit. is there.
[0010]
[Means for Solving the Problems]
An indoor unit of an air conditioner according to claim 1 is an indoor unit of an air conditioner that performs air conditioning by condensing and expanding refrigerant, and includes a heat exchanger, a fan rotor, a refrigerant circuit component, a partition plate, It has. The heat exchanger performs heat exchange between the refrigerant and the air, and has a front heat exchange part and a rear heat exchange part. The rear heat exchange section has an effective length shorter than that of the front heat exchange section. The fan rotor sends air conditioned air into the room. The refrigerant circuit component is a component for changing the flow of the refrigerant, such as an electric expansion valve or a flow divider. A refrigerant circuit component is arrange | positioned in the space produced by the difference in the effective length of a front side heat exchange part and a rear side heat exchange part. The partition plate is disposed between the space and the space around the fan rotor, and prevents leakage of air from the space to the space around the fan rotor.
[0011]
Here, first, the effective length of the rear heat exchange unit is configured to be shorter than the effective length of the front heat exchange unit, thereby creating a predetermined space on the back side of the indoor unit. Then, refrigerant circuit components such as a motor-operated valve and a diverter that emit a relatively loud sound when changing the refrigerant flow are arranged in the space. As described above, since the refrigerant circuit component that is a noise source is arranged in the space on the back side inside the indoor unit, the amount of sound leaking to the front side of the indoor unit is reduced, and the person in the room is uncomfortable. Is suppressed.
However, if the effective length of the rear heat exchange unit is configured to be shorter than the effective length of the front heat exchange unit, the length of the fan rotor is adjusted to the front heat exchange unit having a long effective length if considered normally. For this reason, said space (space produced by the difference in the effective length of a front side heat exchange part and a rear side heat exchange part) adjoins a part of fan rotor. In this case, if nothing is provided between the space and the fan rotor, air may flow directly from the space to the fan rotor without passing through the heat exchanger.
[0012]
On the other hand, in the indoor unit according to claim 1 , since the partition plate is disposed between the space where the refrigerant circuit component is disposed and the fan rotor, the air that does not pass through the heat exchanger flows into the fan rotor. Is suppressed.
[0013]
An indoor unit of an air conditioner according to a second aspect is the indoor unit according to claim 1, wherein the indoor unit is an air conditioner having an outdoor unit and a plurality of indoor units. And the refrigerant circuit components arrange | positioned in the space by having made the effective length of the rear side heat exchange part shorter than the front side heat exchange part contain at least a motor operated valve. The motor-operated valve is provided to adjust the amount of refrigerant flowing through the plurality of indoor units.
Here, a motor-operated valve, which is often built in an indoor unit of a multi-type air conditioner, is arranged in a space on the back side inside the indoor unit that can easily trap noise. The motorized valve may make a relatively loud noise when adjusting the amount of refrigerant, but here it is located in the above space where it is difficult for sound to leak out of the indoor unit. Abnormal noise is not heard loudly.
[0014]
An indoor unit of an air conditioner according to a third aspect is the indoor unit according to the first or second aspect, further comprising a metal member that covers a space in which the refrigerant circuit component is disposed. This metal member surrounds the space together with the partition plate.
Here, not only is the refrigerant circuit component placed in the space on the back side inside the indoor unit to suppress the amount of sound leaking to the front side of the indoor unit, but the space is also covered with a metal member. For this reason, even when a large amount of abnormal noise that leaks out of the indoor unit through the casing, which is often made of resin, is generated from the refrigerant circuit components, the noise insulation effect of the metal member causes the abnormal noise. Leakage to the outside of the indoor unit can be kept small.
[0015]
An indoor unit of an air conditioner according to a fourth aspect is the indoor unit according to any one of the first to third aspects, wherein the partition plate includes an upper and lower partition plate located above the fan rotor and a rear heat exchange. Left and right partition plates extending forward from the end portion on the space side of the portion.
[0016]
The indoor unit of the air conditioner according to claim 5 is the indoor unit according to claim 4, wherein drain water drips from a portion where the upper and lower partition plates intersect with the left and right partition plates to a space around the fan rotor. A drain path is further provided to prevent falling.
[0017]
The indoor unit of the air conditioner according to claim 6 is an indoor unit of an air conditioner that performs air conditioning by condensing and expanding refrigerant, and is a multi-type air conditioner even when the indoor unit of a pair type air conditioner. Even in the case of an indoor unit of an apparatus, the indoor unit has a common casing, and includes a heat exchanger and a fan rotor. The heat exchanger includes a front heat exchange section and a rear heat exchange section having an effective length shorter than that of the front heat exchange section, and performs heat exchange between the refrigerant and the air. The fan rotor sends air conditioned air into the room. And when it becomes an indoor unit of a multi-type air conditioning apparatus, it will further be provided with a refrigerant circuit component and a partition plate. A refrigerant circuit component is arrange | positioned in the space produced by the difference in the effective length of a front side heat exchange part, and a rear side heat exchange part, and changes the flow of a refrigerant | coolant. The partition plate is disposed between the space and the space around the fan rotor, and prevents leakage of air from the space to the space around the fan rotor.
[0018]
The indoor unit of the air conditioner according to claim 7 is the indoor unit according to claim 6, and when the indoor unit is a pair type air conditioner, the rear heat exchange unit and the front heat exchange unit The effective length is made the same, and a partition plate is not required.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
<Outline of multi-type air conditioner>
An indoor unit of an air conditioner according to an embodiment of the present invention is an indoor unit used in a multi-type air conditioner as shown in FIG. In this multi-type air conditioner 91, a plurality of indoor units 93 to 96 are connected to one outdoor unit 92. The outdoor unit 92 and the indoor units 93 to 96 are connected by connection portions 99a to 99d made of refrigerant pipes or transmission lines. The four indoor units 93 to 96 are arranged in different rooms, for example, at home, in a building, or in a store.
[0020]
<Refrigerant circuit of multi-type air conditioner>
A refrigerant circuit 190 of the multi-type air conditioner 91 is shown in FIG. The refrigerant circuit 190 includes one outdoor unit 92, four indoor units 93 to 96 connected in parallel to the outdoor unit 92, and a refrigerant pipe.
The outdoor unit 92 includes a compressor 20, a four-way switching valve 21, an outdoor heat exchanger 22, an accumulator 23, and the like. A discharge pipe thermistor 24 for detecting the discharge pipe temperature on the discharge side of the compressor 20 is attached to the discharge side of the compressor 20. The outdoor unit 92 is provided with an outdoor thermistor 25 for detecting the outdoor air temperature and an outdoor heat exchange thermistor 26 for detecting the temperature of the outdoor heat exchanger 22.
[0021]
Each indoor unit 93 to 96 has the same configuration. Hereinafter, the indoor units 93 to 96 will be described taking the indoor unit 93 as an example.
The indoor unit 93 includes an indoor heat exchanger 4a and an electric valve (expansion valve) 33a connected in series with each other. The electric valve 33a is provided on the refrigerant outlet side of the indoor heat exchanger 4a and adjusts the amount of refrigerant flowing to the indoor heat exchanger 4a. The indoor unit 93 includes a room temperature thermistor 31a for detecting the room temperature and an indoor heat exchange thermistor 32a for detecting the temperature of the indoor heat exchanger 4a. A pipe between the indoor heat exchanger 4a and the electric valve 33a is provided with a liquid pipe thermistor 34a for detecting the liquid pipe temperature between the indoor heat exchanger 4a and the electric valve 33a. On the gas pipe side (refrigerant inlet side) of the indoor heat exchanger 4a, a gas pipe thermistor 35a for detecting the temperature of the refrigerant passing through the interior is provided.
The other indoor units 94, 95, and 96 have the same configuration as the indoor unit 93. In FIG. 4, the same symbols are assigned to the indoor heat exchanger, the electric valve, and various thermistors.
[0022]
<Parts configuration and parts placement in indoor units>
As described above, the indoor units 93 to 96 used in the multi-type air conditioner 91 incorporate the electric valves 33a to 33d. Here, taking the indoor unit 93 as an example, the indoor unit used in the multi-type air conditioner will be described focusing on the arrangement of components.
[0023]
In the indoor unit 93, as shown in FIGS. 5 and 6, the indoor heat exchanger 4 a that covers a part of the front, upper, and rear of the fan rotor 3 is mainly composed of the front heat exchange unit 41 and the rear heat exchange unit 42. It is composed of The rear side heat exchange part 42 has a shorter effective length than the front side heat exchange part 41, and the end part 42 b on the motor 14 side is closer to the center part in the width direction of the indoor unit 93 than the end part 41 b of the front side heat exchange part 41. Located (see FIG. 5). As a result, a relatively large space SP is secured outside the rear heat exchange section 42 (on the side of the motor 14). The width dimension of the space SP is substantially the same as the difference in effective length between the front heat exchange part 41 and the rear heat exchange part 42, and is 100 mm to 150 mm.
[0024]
Moreover, in the indoor unit 93, the structure which the upper end 41a of the front side heat exchange part 41 and the upper end 42a of the rear side heat exchange part 42 leave | separate a little is taken, and the connection board 43 is stretched in the meantime. The connection plate 43 integrates the front heat exchange part 41 and the rear heat exchange part 42 as the indoor heat exchanger 4a, and also exchanges the front heat from the upper part of the indoor heat exchanger 4a to the lower fan rotor 3. It plays a role of preventing air from passing through without passing through the section 41 and the rear heat exchange section 42.
[0025]
In the indoor unit 93, the motor valve 33a, the refrigerant pipe 133 connected to the motor valve 33a, the motor valve in the space SP created by the difference in effective length between the front heat exchange unit 41 and the rear heat exchange unit 42 A flow divider 39 for dividing the refrigerant that has exited 33a to each heat transfer channel of the indoor heat exchanger 4a is disposed. As shown in FIG. 5, the motor-operated valve 33 a is disposed sideways in order to improve maintainability.
[0026]
Furthermore, in the indoor unit 93, the space SP in which the electric valve 33a and the like are disposed is surrounded by the metal cover 50, the upper and lower partition plates 44, and the left and right partition plates 45. The metal cover 50 includes a first cover portion 51 that covers the space SP, a second cover portion 52 that extends obliquely downward from the front end of the first cover portion 51 along the front surface of the front heat exchange portion 41, and a first cover. This is a sheet metal member formed integrally with a third cover portion 53 that extends obliquely downward from the rear end of the portion 51 and covers the back of the space SP. This metal cover 50 is provided mainly for the purpose of sound insulation. On the other hand, the upper and lower partition plates 44 and the left and right partition plates 45 are metal plate-like members provided to prevent the air flowing into the space SP from leaking out to the fan rotor side. The upper and lower partition plates 44 are located above the fan rotor 3 and partition the space around the fan rotor 3 from the space SP in which the electric valve 33a and the like are disposed. The left and right partition plates 45 are substantially triangular members extending vertically forward from the space SP-side end portion 42b of the rear heat exchange portion 42, and each side has an end portion 42b of the rear heat exchange portion 42 and a connection plate 43. The end of the space SP side and the end of the upper and lower partition plate 44 are in contact with each other.
[0027]
Further, a front drain pan 61 is disposed below the lower end of the front side heat exchanging portion 41, and a rear drain pan 62 is disposed below the lower end of the rear side heat exchanging portion 42. These drain pans 61 and 62 are formed in a bottom frame and a drain pan assembly having the same configuration as the conventional bottom frame 12 and drain pan assembly 18 of FIG. 2, and are suspended from the indoor heat exchanger 4a and the like. Plays the role of receiving drained water. In the indoor unit 93, drain water is supplied to the fan rotor 3 from a portion where the upper and lower partition plates 44 and the left and right partition plates 45 surrounding the space SP intersect with the end portion 42 b on the space SP side of the rear heat exchange unit 42. The drain path 63 is formed below the portion so as not to sag. The drain path 63 is formed at the intersection of the upper and lower partition plates 44 and the left and right partition plates 45 with a metal plate (a part of the upper and lower partition plates 44, a part of the left and right partition plates 45, or these partition plates 44 and 45). The other member to be mounted) is curved so that the cross-section has a pocket shape. As a result, drain water that has descended from the end 42b of the rear heat exchanging portion 42 through the left and right partition plates 45, or the intersection of the upper and lower partition plates 44 and the left and right partition plates 45 through a gap from the space SP due to a pressure difference. The drain water that has oozed out from the portion toward the fan rotor 3 is guided to the drain path 63 and flows into the drain pan 62 (see FIG. 6).
[0028]
<Features of indoor unit>
(1)
In the indoor unit 93, first, the effective length of the rear heat exchange unit 42 is configured to be shorter than the effective length of the front heat exchange unit 41, and a predetermined space SP is created on the back side of the indoor unit 93. Then, refrigerant circuit components such as the motor-operated valve 33a and the flow divider 133 that generate a relatively loud sound when changing the refrigerant flow are arranged in the space SP. As described above, since the noise source such as the motor-operated valve 33a can be arranged behind the indoor unit 93, the noise level audible to a person in the room can be suppressed to a low level as judged from the directivity of the sound. become.
[0029]
(2)
In the indoor unit 93, not only is the refrigerant circuit component serving as a noise source such as the electric valve 33 a disposed in the space SP on the back side of the indoor unit 93 to suppress the amount of sound leaking to the front side of the indoor unit 93, The space SP is covered with a metal cover 43. Therefore, even when a large noise that leaks out of the indoor unit 93 through the casing, which is often made of resin, is generated from the motor-operated valve 33a or the like, the noise is prevented by the noise insulation effect of the metal cover 43. Is prevented from leaking out of the indoor unit 93.
[0030]
In addition, it is desirable to use a conventional sound insulation measure for covering the electric valve 33a with putty or rubber.
(3)
In the indoor unit 93, since the effective length of the rear heat exchange unit 42 is configured to be shorter than the effective length of the front heat exchange unit 41, the length of the fan rotor 3 corresponding to the effective length of the front heat exchange unit 41 is configured. The length is longer than that of the rear heat exchange section 42. As a result, the space SP is positioned above a portion of the fan rotor 3 on the motor 14 side.
[0031]
In this case, if nothing is provided between the space SP and the fan rotor 3, the space SP passes directly from the space SP to the fan rotor 3 without passing through any of the heat exchangers 41 and 42 of the indoor heat exchanger 4a. There is a risk of air flowing in.
On the other hand, in the indoor unit 93, since the upper and lower partition plates 44 and the left and right partition plates 45 are disposed between the space SP in which the electric valve 33a and the like are disposed and the fan rotor 3, the indoor heat exchanger 4a is passed through. The problem that no air flows into the fan rotor 3 is suppressed.
[0032]
(4)
In the indoor unit 93, the upper and lower partition plates 44 prevent air from descending from the space SP to the fan rotor 3, and the left and right partition plates 45 prevent air from flowing from the space SP to the front heat exchange unit 41 and the rear heat exchange unit 42. The flow to the fan rotor 3 through the space between the end portions 42b is prevented. As shown in FIG. 6, since the lower ends of the upper and lower partition plates 44 and the left and right partition plates 45 are located above the drain pan 62, water droplets are separated from the end portions 42b of the rear heat exchange section 42 and the like. Even when it flows to 45, the water flows into the drain pan 62.
[0033]
Further, drain water that flows out from the end portion 42b of the rear heat exchanging portion 42 shorter than the fan rotor 3 and the intersecting portion of both partition plates 44 and 45 to the fan rotor 3 side through a gap due to a pressure difference or the like is drained by a drain path 63. Guided to drain pan 62. For this reason, even when the space SP is provided and the space SP is surrounded by the partition plates 44 and 45 as described above, the problem of drain water dripping into the fan rotor 3 is suppressed.
[0034]
(5)
The indoor unit 93 includes an electric valve 33a, and it is unlikely that the indoor unit 93 can be used as it is for a paired air conditioner such as a room air conditioner. However, it is possible to design the structure so that the indoor heat exchanger 4a of the indoor unit 93 can be replaced with a pair type indoor heat exchanger, and to make the casing part common between the multi type and the pair type Is possible.
[0035]
For example, in a multi-type indoor unit that has a common casing and is often used for business purposes, the indoor heat in which the effective lengths of the front heat exchange unit and the rear heat exchange unit are different as in the indoor unit 93 described above. An exchanger can be set, and in a pair type indoor unit, it can be designed to set an indoor heat exchanger in which the effective lengths of the front heat exchange unit and the rear heat exchange unit are the same.
[0036]
【The invention's effect】
In the indoor unit according to the first aspect, the effective length of the rear heat exchange unit is configured to be shorter than the effective length of the front heat exchange unit, and a predetermined space is created on the back side of the indoor unit. Then, refrigerant circuit components such as a motor-operated valve and a diverter that emit a relatively loud sound when changing the refrigerant flow are arranged in the space. For this reason, the amount of sound that leaks to the front side of the indoor unit is reduced, and it is possible to suppress discomfort to people in the room. Further, in the indoor unit according to claim 1 , since the partition plate is disposed between the space where the refrigerant circuit component is disposed and the fan rotor, the problem that air that does not pass through the heat exchanger flows into the fan rotor is suppressed. It is done.
[0037]
In the indoor unit according to the second aspect, the motor-operated valve, which is often built in the indoor unit of the multi-type air conditioner, is disposed in the space on the back side inside the indoor unit where noise is easily confined. The motorized valve may make a relatively loud noise when adjusting the amount of refrigerant, but here it is located in the above space where it is difficult for sound to leak out of the indoor unit. Abnormal noise is not heard loudly.
[0038]
In the indoor unit according to claim 3, not only is the refrigerant circuit component disposed in the space on the back side inside the indoor unit to reduce the amount of sound leaking to the front side of the indoor unit, but the space is further made of a metal member. Covered with. For this reason, even when a large amount of abnormal noise that leaks out of the indoor unit through the casing, which is often made of resin, is generated from the refrigerant circuit components, the noise insulation effect of the metal member causes the abnormal noise. Leakage to the outside of the indoor unit can be kept small .
[Brief description of the drawings]
FIG. 1 is an external perspective view of a conventional pair-type air conditioner.
FIG. 2 is an exploded view of a conventional indoor unit.
FIG. 3 is a schematic view of a multi-type air conditioner including an indoor unit according to an embodiment of the present invention.
FIG. 4 is a diagram showing a refrigerant circuit of a multi-type air conditioner.
FIG. 5 is an internal perspective view of a motor side portion of the indoor unit.
FIG. 6 is a schematic cross-sectional view of an indoor unit.
[Explanation of symbols]
3 Fan rotor 4a Indoor heat exchanger 33a Motorized valve (refrigerant circuit component)
39 Shunt (refrigerant circuit parts)
41 Front heat exchanging part 42 Rear heat exchanging part 44 Vertical partition plate (upper and lower partition part)
45 Left and right dividers (left and right dividers)
50 Metal cover (metal member)
62 Rear drain pan (drain pan)
63 Drain path 91 Air conditioner 92 Outdoor unit 93-96 Indoor unit SP space

Claims (7)

冷媒の凝縮・膨張により空気調和を行う空気調和装置の室内機であって、
前側熱交換部(41)と、前記前側熱交換部(41)よりも有効長が短い後側熱交換部(42)とを有し、冷媒と空気との間で熱交換を行わせる熱交換器(4a)と、
空気調和された空気を室内へと送るためのファンロータ(3)と、
前記前側熱交換部(41)と前記後側熱交換部(42)との有効長の違いにより生じるスペース(SP)に配置され、前記冷媒の流れを変える冷媒回路部品(33a,39)と、
前記スペース(SP)と前記ファンロータ(3)の周囲の空間との間に配置され、前記スペース(SP)から前記ファンロータ(3)の周囲の空間への空気の漏れ出しを防止する仕切板(44,45)と、
を備え空気調和装置の室内機。
An indoor unit of an air conditioner that performs air conditioning by condensing and expanding refrigerant,
Heat exchange that includes a front heat exchange section (41) and a rear heat exchange section (42) having an effective length shorter than that of the front heat exchange section (41), and performs heat exchange between the refrigerant and the air. A vessel (4a);
A fan rotor (3) for sending air conditioned air indoors;
Refrigerant circuit components (33a, 39) that are arranged in a space (SP) generated by a difference in effective length between the front heat exchange section (41) and the rear heat exchange section (42) and change the flow of the refrigerant;
A partition plate that is disposed between the space (SP) and the space around the fan rotor (3) and prevents leakage of air from the space (SP) to the space around the fan rotor (3). (44,45),
Indoor unit of an air conditioner Ru comprising a.
室外機(92)および複数の室内機(93〜96)を有する空気調和装置(91)の室内機であり、
前記スペース(SP)に配置される前記冷媒回路部品は、少なくとも、前記複数の室内機(93〜96)に流す冷媒の量を調整するための電動弁(33a)を含む、
請求項1に記載の空気調和装置の室内機。
An indoor unit of an air conditioner (91) having an outdoor unit (92) and a plurality of indoor units (93 to 96),
The refrigerant circuit component disposed in the space (SP) includes at least an electric valve (33a) for adjusting the amount of refrigerant flowing through the plurality of indoor units (93 to 96).
The indoor unit of the air conditioning apparatus of Claim 1.
前記仕切板(44,45)とともに前記スペース(SP)を囲う金属製部材(50)をさらに備えた、
請求項1又は2に記載の空気調和装置の室内機。
A metal member (50) surrounding the space (SP ) together with the partition plates (44, 45) ;
The indoor unit of the air conditioning apparatus of Claim 1 or 2.
前記仕切板(44,45)は、前記ファンロータ(3)の上方に位置する上下仕切板(44)と、前記後側熱交換部(42)の前記スペース(SP)側の端部(42b)から前方に延びる左右仕切板(45)とを含む、  The partition plates (44, 45) include an upper and lower partition plate (44) positioned above the fan rotor (3), and an end (42b) on the space (SP) side of the rear heat exchange section (42). Left and right partition plates (45) extending forward from
請求項1から3のいずれかに記載の空気調和装置の室内機。The indoor unit of the air conditioning apparatus in any one of Claim 1 to 3.
前記上下仕切板(44)と前記左右仕切板(45)とが交差する部分から前記ファンロータ(3)の周囲の空間へとドレン水が垂れ落ちることを防止するドレン経路63をさらに備えた、  A drain path 63 for preventing drain water from dripping from a portion where the upper and lower partition plates (44) and the left and right partition plates (45) intersect to a space around the fan rotor (3);
請求項4に記載の空気調和装置の室内機。The indoor unit of the air conditioning apparatus of Claim 4.
冷媒の凝縮・膨張により空気調和を行う空気調和装置の室内機であり、ペア型の空気調和装置の室内機となる場合でもマルチ型の空気調和装置の室内機となる場合でもケーシングが共通とされる室内機であって、
前側熱交換部(41)と、前記前側熱交換部(41)よりも有効長が短い後側熱交換部(42)とを有し、冷媒と空気との間で熱交換を行わせる熱交換器(4a)と、
空気調和された空気を室内へと送るためのファンロータ(3)と、
を備え、
前記マルチ型の空気調和装置の室内機となる場合には、
前記前側熱交換部(41)と前記後側熱交換部(42)との有効長の違いにより生じるスペース(SP)に配置され、前記冷媒の流れを変える冷媒回路部品(33a,39)と、
前記スペース(SP)と前記ファンロータ(3)の周囲の空間との間に配置され、前記スペース(SP)から前記ファンロータ(3)の周囲の空間への空気の漏れ出しを防止する仕切板(44,45)と、
をさらに備える空気調和装置の室内機。
Ri indoor der of an air conditioning apparatus that performs air conditioning by condensation and expansion of the refrigerant, a casing even when the indoor unit of the multi-type air conditioner even when the indoor unit of a pair type air conditioner is common Indoor unit
Heat exchange that includes a front heat exchange section (41) and a rear heat exchange section (42) having an effective length shorter than that of the front heat exchange section (41), and performs heat exchange between the refrigerant and the air. A vessel (4a);
A fan rotor (3) for sending air conditioned air indoors;
With
When it becomes an indoor unit of the multi-type air conditioner,
Refrigerant circuit components (33a, 39) that are arranged in a space (SP) generated by a difference in effective length between the front heat exchange section (41) and the rear heat exchange section (42), and change the flow of the refrigerant;
A partition plate disposed between the space (SP) and the space around the fan rotor (3) and preventing leakage of air from the space (SP) to the space around the fan rotor (3). (44, 45),
An air conditioner indoor unit further comprising:
前記ペア型の空気調和装置の室内機となる場合には、前記後側熱交換部と前記前側熱交換部との有効長が同じにされ、前記仕切板(44,45)が不要とされる、  In the case of an indoor unit of the pair type air conditioner, the effective lengths of the rear heat exchange unit and the front heat exchange unit are made the same, and the partition plates (44, 45) are unnecessary. ,
請求項6に記載の室内機。The indoor unit according to claim 6.
JP2002139745A 2002-05-15 2002-05-15 Air conditioner indoor unit Expired - Fee Related JP3731067B2 (en)

Priority Applications (9)

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JP2002139745A JP3731067B2 (en) 2002-05-15 2002-05-15 Air conditioner indoor unit
ES03721034T ES2373546T3 (en) 2002-05-15 2003-05-06 INTERIOR UNIT FOR AIR CONDITIONER.
PCT/JP2003/005671 WO2003098119A1 (en) 2002-05-15 2003-05-06 Indoor unit for air conditioner
EP03721034A EP1515095B1 (en) 2002-05-15 2003-05-06 Indoor unit for air conditioner
AU2003235853A AU2003235853B2 (en) 2002-05-15 2003-05-06 Indoor unit for air conditioner
AT03721034T ATE530856T1 (en) 2002-05-15 2003-05-06 INDOOR UNIT FOR AIR CONDITIONING
CNB038097176A CN1294386C (en) 2002-05-15 2003-05-06 Indoor unit for air conditioner
KR1020047017783A KR100605844B1 (en) 2002-05-15 2003-05-06 Indoor unit for air conditioner
CN032575602U CN2723879Y (en) 2002-05-15 2003-05-13 Indoor unit for air conditioner

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