JP3882910B2 - Air conditioner outdoor unit - Google Patents

Air conditioner outdoor unit Download PDF

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Publication number
JP3882910B2
JP3882910B2 JP2002231328A JP2002231328A JP3882910B2 JP 3882910 B2 JP3882910 B2 JP 3882910B2 JP 2002231328 A JP2002231328 A JP 2002231328A JP 2002231328 A JP2002231328 A JP 2002231328A JP 3882910 B2 JP3882910 B2 JP 3882910B2
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heater
outdoor unit
heat exchanger
drain
shape
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JP2004069220A (en
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達哉 望月
薫 山本
岩崎　　弘
寿 植野
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units

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  • Other Air-Conditioning Systems (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は、空気調和機の室外機における熱交換器を設置する室外機ベースのドレンのヒーターによる凍結防止に関するものである。
【０００２】
【従来の技術】
図４及び図５は、実開昭６３−６９９２６号公報に示された従来の空気調和機の室外機のベース部分を示し、それぞれ、断面図（図５のＡ−Ａ断面図）及び斜視図である。
これらの図において、室外機の構造は、室外機ベース１０ａの突出部にヒーター３０を配設し、室外機ベース１０ａ側にフランジを有し、伝熱材の働きをする室外機ベース１０ｂ上に熱交換器２を載置し、室外機ベース１０ａと室外機ベース１０ｂによりヒーター３０を挟み込むようにして熱交換器２の下部にヒーター３０を収納すると共に、熱交換器２の下面の室外機ベース１０ａと室外機ベース１０ｂに長穴形状のドレン穴４０を設けて、ドレンを外部に排出する構造となっていた。
【０００３】
上記のように構成された室外機において、冬季に熱交換器２からのドレンが再凍結するのをヒーター３０による熱で防止して、ドレン穴４０からドレンが外部に排出される。
【０００４】
【発明が解決しようとする課題】
上記のように、従来の室外機ではヒーター３０を設置する室外機ベース１０ａ、１０ｂの構造が複数であり、またドレン穴４０が長穴状であるため、寒冷地以外でドレンを集中排水してホース等で処理する場合に対応できなかった。
【０００５】
この発明は、上記のような問題を解消するためになされたもので、室外機ベースの構造を単純化し、冬季においても、熱交換器からのドレンが室外機ベース上で再凍結するのをヒーターにより防止し、不具合が生じるのを防止することを目的とする。
【０００６】
【課題を解決するための手段】
本発明に係る空気調和機の室外機は、室外機ベース上に熱交換器を設置する室外機において、管状のヒーターを熱交換器の底部の外周形状に倣った形状で、ほぼ閉じた形状に、また、外周形状とほぼ同じ大きさの形状に形成し、ヒーターを、室外機ベースの平底上で、熱交換器を囲むように、またはヒーター形状の半分以上が熱交換器の下になるように設置し、さらに、室外機ベースの前記平底に開口するドレン穴がヒーターのほぼ閉じた形状の内にあるように設置し、ドレン穴を平底の一部に開口するドレン穴とし、ドレン穴の近傍のヒーターの管部を隔絶板に形成した長形の凹部で囲いながら室外機ベースの平底に押さえることにより、ヒーターを固定し、ドレン穴には、熱交換器側と反対側からドレンソケットが取付けられる構造であり、隔絶板が中央部にソケット穴を有し、ソケット穴内にドレン穴が開口するように隔絶板を室外機ベースの平底に取付けるものである。
【００１０】
【発明の実施の形態】
実施の形態１．
以下この発明の実施の形態１を図により説明する。
図１は実施の形態１の室外機の分解斜視図、図２は同じく隔絶板の斜視図、図３は同じくヒーター取付部分を示す断面図である。
これらの図において、１は空気調和機の室外機の室外機ベース、１ａは室外機ベース１の平底、１ｂは室外機ベース１のネジ穴、２は熱交換器、２ａは熱交換器２の底部、３はシーズヒーターのような管状のヒーター、３ａはヒーター３の管部、４は室外機ベースに設けられたドレン穴、５は隔絶板、５ａは隔絶板５の凹部、５ｂは隔絶板５のネジ穴、６は隔絶板５を室外機ベースに固定する固定ネジ、７はドレンソケット、８は隔絶板５の凹部５ａ内の凸部、９は隔絶板５の中央部に形成されるソケット穴である。
【００１１】
室外機ベース１は、底が平らな平底１ａを有する浅い容器であり、平底１ａには平底の１ａの一部に開口する断面が円形のドレン穴４が形成されている。但し、断面が円形に限らず、自由な形状でいいが、平底１ａの一部に開口するように、ドレンソケット７の取付が可能であり、ここから集中排水できるようにする。即ち、ドレン穴４を平底の１ａの一部に開口するドレン穴４とすることにより、室外機をベランダ等に吊り架台を利用して高い位置に据え付ける場合、ドレン穴４にドレンソケット７を取付けてホースを接続し、ドレンを導き水が垂れるのを防止することが可能となる。
熱交換器２は、図１の例では、薄型のＬ字状のものである。必ずしも薄形とは限らないが、薄形の場合、特に、ドレンの滴下範囲は限定され、また、ヒータ３の管部３ａで熱交換器２を囲む場合、囲まれた平底１ａ内は温度が上がり易く、保温され易く、ドレンの凍結防止には有利である。
【００１２】
ヒーター３は、シーズヒーターのような管状のヒーターであり、熱交換器２の底部２ａの外周形状に倣った形状で、ほぼ閉じた形状に、即ち、図１の例では、底部２ａのＬ字形状類似の形状に管部３ａを曲げ、平面上でほぼ閉じたＬ字状の囲いを形成する形状に加工される。また、熱交換器２の底部２ａの外周形状とほぼ同じ大きさに加工される。
ここで、「ほぼ閉じた形状」とは、管状のヒーター３が熱交換器２の底部２ａの外周形状に倣った形状を形成するとき、開いた部分があっても、この部分にヒーター３がないことにより囲い内にドレンが凍結しない程度であれば「ほぼ閉じた形状」に含まれる。また、「ほぼ同じ大きさ」とは、熱交換器２の底部２ａの外周形状に対して、全体的に一回り大きい、一回り小さい場合を含み、さらに、部分的な形状の相違があっても含まれる。
そして、ヒーター３は室外機ベースの平底上で、熱交換器２を囲むように設置するか、または、ヒーター３形状のほとんどが熱交換器２の下になるように設置するか、または、ヒーター３形状の少なくとも半分以上が熱交換器２の下になるように設置する。
そこで、ヒーター３を熱交換器２の底部１ａの外周形状に倣った形状で、外周形状とほぼ同大の形状に形成したことから、ヒーター３を、室外機ベース１の平底１ａ上で、熱交換器２を囲むように設置した場合、ヒーター３が熱交換器２の設置スペースから大きく離れることがなく、また、半分以上が熱交換器２の下方になるように設置した場合、熱交換器２は、ヒーター３により囲われるスペースから大きく離れることがない。
従って、熱交換器２から滴下するドレンは、ほとんど管状のヒーター３の囲い形状内となり、また、ヒータ３に通電することで、室外機ベース１の平底１ａの管状のヒーター３の囲い形状内は、温度あがることにより、ドレンの凍結が防止できる。
【００１３】
隔絶板５は、図２に示すように、全体に矩形形状であり、両端の長手方向に長形の凹部５ａ、５ａが形成され、長手方向の両端部中央にネジ６を挿入する２個のネジ穴５ｂ、５ｂが形成され、さらに、凹部５ａ、５ａ及びネジ６用の２個のネジ穴５ｂ、５ｂで囲まれた部分に、即ち、中央部にソケット９が形成される。また、隔絶板５の中央部に形成されたソケット穴９は、ソケット穴９内にドレン穴４が開口するように隔絶板５を平底１ａに取付けているので、ドレン穴４の下方（底板１ａの熱交換器２側と反対側）より取付られるドレンソケット７と干渉しない形状となっている。
【００１４】
次に、これらの組立について記載する。
室外機ベース１の平底１ａ上にヒーター３を設置する。この際、ドレン穴４及びネジ６用の２個のネジ穴１ｂ、１ｂがヒーター３の管部３ａで形成されるＬ字状のほぼ閉じた形状の囲いの内に入るようにする。この場合、ドレン穴４をヒーター３の囲いの内とすることにより、ドレン穴４がドレンの凍結で塞がることを防止できる。
それから、隔絶板５の長形の凹部５ａ、５ａをヒーター３の平行な管部３ａ、即ち、ドレン穴４の近傍のヒーター３の管部３ａに合せ、またネジ６用のネジ穴５ｂ、５ｂをネジ穴１ｂ、１ｂに合せ、隔絶板５を平底１ａ上で、ヒータ３上に載置し、２本のネジ６、６をねじ込み、ヒーター３を室外機ベース１に固定する。この際、平行な管部３ａを長形の凹部５ａ、５ａで囲いながら平底１ａに押えることによりヒーター３を固定する。
【００１５】
次に、熱交換器２を平底１ａ上に設置する。熱交換器２はヒーター３の管部３ａの囲い内に設置しても、即ち、熱交換器を囲むようにヒーター３を設置してもよい。また、熱交換器２を、ヒーター３の管部３ａ上に設置しても、即ち、ヒーター３の管部３ａを熱交換器２の下になるように設置してもよい。
但し、ヒーター３を熱交換器２の管部２ａの下になるように設置する場合は、熱交換器２が大幅にヒーター３の管部２ａからはみ出ないようにする。即ち、Ｌ字形状のヒーター３の管部２ａの半分以上が熱交換器２の下になるようにする。
最後に、熱交換器２側と反対側からドレンソケット７を平底１ａのドレン穴４に取付ける。
なお、室外ベース１上の空き部分には熱交換器２に送風する送風機が設置される。
【００１６】
図２、図３により、隔絶板５によるヒータ３の固定についてさらに説明する。隔絶板５の凹部５ａ内の凸部８は、長形の凹部５ａの両端近くに１個ずつが、それぞれ、凹部５ａの内面の頂点から管部３ａに向かって突出している。そして、管部３ａを凹部５ａが囲い、ネジ止めすることにより、この凸部８が管部３ａと接触し平底１ａに押える。即ち、隔絶板５の凹部５ａの他の部分とヒーター３間には隙間が形成される。但し、凸部８は両端近くに、それぞれ、複数個（例えば、２〜３個）づつ設けてもよい。この場合、より安定して固定できる。
また、隔絶板５の凹部５ａ、５ａで平行な管部３ａを囲うことにより、ドレン穴４の周囲にあるヒーター３の管部３ａが露出しないようにする。
そこで、隔絶板５は、ヒーター３を室外機ベース１に固定する働きと、据え付け後にドレン穴４から指を入れた際にヒーター３に直接指が触れて火傷を負うことを防ぎ、製品の安全性を確保する働きを兼ねている。
【００１７】
次いで、隔絶板５の凹部５ａ内の凸部８の機能を説明する。
冬季にドレンの凍結を防止して排水するためにヒーター３に通電する際には、ヒーター３の温度は火傷をする程上昇しないが、制御回路の暴走等で夏期にヒーターに通電された場合を考慮して、ヒーター３及び周囲の指を触れる可能性のある部分が高温にならないように保護する必要がある。
室外機ベース１自体は、ヒーター３に接触している部分から周囲への伝熱量が大きいため、平底１ａの下面から室外機ベース１のヒーター配設部分に触れた場合には火傷に至ることはないが、部品面積の小さい隔絶板５においては、ヒーター３の温度上昇に伴い隔絶板５自体の温度も高くなるため、ドレン穴４から指を入れて隔絶板５に触れたことで火傷をする可能性がある。
そこで、隔絶板５にヒーター３との直接接触部分を少なくするための凸部８を設けて、ヒーター３との間に隙間を設け、熱伝導を少なくすることによって隔絶板５の温度を低く保つことができる。
【００１８】
室外機ベース１の平板１ａに設けるドレン穴４は、ヒーター３の管部３ａで形成されるＬ字状の囲いの内に入るようにし（ほぼ閉じた形状の内に入るようにし）、１箇所でなく、数箇所（例えば２〜３箇所）としてもよい。この室外機を高所に設置する場合は、それぞれにドレンソケット７を取付け、ドレンソケット７にホースを取付け、途中で集合させドレンを導くようにする。
また、ドレン穴４は、長穴形状のものでもよい。但し、この場合は、ドレン穴４は、ヒーター３の管部３ａで形成されるＬ字状の囲いの内に入るようにし（ほぼ閉じた形状の内に入るようにし）、ドレンソケット７は取付けない。この場合のヒーター３の室外機ベース１の平底１ａへの取付は通常の任意の方法で行う。長穴とすれば、ヒーター３の囲い内であることより、同じく、ドレンの凍結はなく、滴下ドレンは近くのドレン穴４の開口部から早急に外部に排出される。
【００１９】
本実施の形態の空気調和機の室外機によれば、ドレン穴４を平底１ａの一部に開口するドレン穴４とし、このドレン穴４の近傍のヒーター３の管部３ａを隔絶板５に形成した長形の凹部５ａで囲いながら室外機ベースの平底１ａに押えることにより、ヒーター３を固定するので、隔絶板５により、ヒーター３を室外機ベース１に固定できる共に、ドレン穴４から直接ヒーター３に指が接触することを防止できる。
【００２０】
また、本実施の形態の空気調和機の室外機によれば、ヒーター３の管部３ａを長形の凹部５ａで押えるとき、隔絶板５の凹部５ａの内面に形成した凸部８により押えるので、ヒータ３を固定できるのに加えて、ヒーターに通電しても、隔絶板５の温度が高くなるのを防止でき、接触した場合の火傷を防止する。
【００２１】
また、本実施の形態の空気調和機の室外機によれば、ドレン穴４には、熱交換器２側と反対側からドレンソケット７が取付けられ、隔絶板５が中央部にソケット穴９を有し、ソケット穴９内にドレン穴４が開口するように隔絶板５を室外機ベース１の平底１ａに取付けるので、ドレンソケット７を室外機ベース１のドレン穴４に取り付ける場合に、隔絶板５に設けられたソケット穴９により、ドレンソケット７と隔絶板５が干渉することなく取り付けが可能である。
【００２２】
【発明の効果】
本発明に係る空気調和機の室外機は、室外機ベース上に熱交換器を設置する室外機であって、管状のヒーターを熱交換器の底部の外周形状に倣った形状で、ほぼ閉じた形状に、また、外周形状とほぼ同じ大きさの形状に形成し、ヒーターを、室外機ベースの平底上で、熱交換器を囲むように設置するか、またはヒーター形状の半分以上が熱交換器の下になるように設置し、さらに、室外機ベースの平底に開口するドレン穴がヒーターのほぼ閉じた形状の内にあるように設置し、ドレン穴を平底の一部に開口するドレン穴とし、ドレン穴の近傍のヒーターの管部を隔絶板に形成した長形の凹部で囲いながら室外機ベースの平底に押さえることにより、ヒーターを固定し、ドレン穴には、熱交換器側と反対側からドレンソケットが取付けられる構造であり、隔絶板が中央部にソケット穴を有し、ソケット穴内にドレン穴が開口するように隔絶板を室外機ベースの平底に取付けるものである。
【００２３】
そこで、ヒーターを熱交換器の底部の外周形状に倣った形状で、外周形状とほぼ同じ大きさの形状に形成したことから、ヒーターを、室外機ベースの平底上で、熱交換器を囲むように設置した場合、ヒーターが熱交換器の設置スペースから大きく離れることがなく、また、半分以上が熱交換器の下方になるように設置した場合、熱交換器は、ヒーターにより囲われるスペースから大きく離れることがなく、いずれの場合も、熱交換器から滴下するドレンは、ほとんど管状のヒーターの囲い形状内となる。そして、ヒータに通電することで、室外機ベースの平底の管状のヒーターの囲い内は、温度あがることにより、ドレンの凍結が防止できる。
また、ドレン穴が管状ヒーターの囲い内にあることより、ドレン穴も凍結しないので、ドレンはドレン穴から外部に排出できる。
しかも、室外機ベースは、平底にヒータと熱交換器を設置するので、室外機ベースの構造を単純化できる。
また、ヒーターの管部を隔絶板に形成した長形の凹部で囲いながら室外機ベースの平底に押さえることにより、ヒーターを固定するので、ヒーターに通電しても、隔絶板の温度が高くなるのを防止でき、接触した場合の火傷を防止できる。
さらに、ドレン穴には、熱交換器側と反対側からドレンソケットが取付けられる構造であり、隔絶板が中央部にソケット穴を有し、ソケット穴内にドレン穴が開口するように隔絶板を室外機ベースの平底に取付けるので、ドレンソケットを室外機ベースのドレン穴に取り付ける場合に、隔絶板に設けられたソケット穴により、ドレンソケットと隔絶板が干渉することなく取り付けが可能である。
【図面の簡単な説明】
【図１】 本発明の実施の形態１による空気調和機の室外機の分解斜視図である。
【図２】 本発明の実施の形態１による隔絶板の斜視図である。
【図３】 本発明の実施の形態１によるヒーター取付部分を示す断面図である。
【図４】 従来の空気調和機の室外機ベース部分を示す断面図である。
【図５】 従来の空気調和機の室外機ベース部分を示す斜視図である。
【符号の説明】
１ 室外機ベース、1ａ 平底、２ 熱交換器、２ａ 底部、３ ヒーター、３ａ 管部、４ ドレン穴、５ 隔絶板、５ａ 凹部、７ ドレンソケット、８凸部、９ ソケット穴。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to prevention of freezing by an outdoor unit-based drain heater in which a heat exchanger in an outdoor unit of an air conditioner is installed.
[0002]
[Prior art]
4 and 5 show a base portion of an outdoor unit of a conventional air conditioner disclosed in Japanese Utility Model Publication No. 63-69926, and are a sectional view (A-A sectional view in FIG. 5) and a perspective view, respectively. It is.
In these drawings, the structure of the outdoor unit is such that a heater 30 is disposed on the protruding portion of the outdoor unit base 10a, a flange is provided on the outdoor unit base 10a side, and the outdoor unit base 10b functions as a heat transfer material. The heat exchanger 2 is placed, and the heater 30 is housed in the lower part of the heat exchanger 2 so that the heater 30 is sandwiched between the outdoor unit base 10a and the outdoor unit base 10b, and the outdoor unit base on the lower surface of the heat exchanger 2 10a and the outdoor unit base 10b are provided with a drain hole 40 having a long hole shape, and the drain is discharged to the outside.
[0003]
In the outdoor unit configured as described above, the drain from the heat exchanger 2 is prevented from refreezing in the winter by the heat of the heater 30, and the drain is discharged from the drain hole 40 to the outside.
[0004]
[Problems to be solved by the invention]
As described above, the conventional outdoor unit has a plurality of structures of the outdoor unit bases 10a and 10b on which the heater 30 is installed, and the drain hole 40 has a long hole shape. It was not possible to handle with a hose.
[0005]
The present invention has been made in order to solve the above-described problems. The present invention simplifies the structure of the outdoor unit base, and even in winter, the drain from the heat exchanger is re-frozen on the outdoor unit base. The purpose is to prevent the occurrence of defects.
[0006]
[Means for Solving the Problems]
An outdoor unit of an air conditioner according to the present invention is an outdoor unit in which a heat exchanger is installed on an outdoor unit base, and a tubular heater is shaped to follow the outer peripheral shape of the bottom of the heat exchanger and is substantially closed. In addition, it is formed in a shape that is almost the same size as the outer shape, and the heater is placed on the flat bottom of the outdoor unit base so that it surrounds the heat exchanger, or more than half of the heater shape is under the heat exchanger. In addition, the drain hole that opens to the flat bottom of the outdoor unit base is located within the substantially closed shape of the heater, and the drain hole is a drain hole that opens to a part of the flat bottom. The heater is fixed by holding the tube part of the heater near the flat bottom of the outdoor unit base while enclosing it with a long concave part formed on the isolation plate, and the drain socket has a drain socket from the opposite side to the heat exchanger side. The structure is mounted , In which isolation plate has a socket hole in the middle part, attaching the isolation plate such drain hole is opened in the socket hole in the outdoor unit based flat bottom.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings.
FIG. 1 is an exploded perspective view of the outdoor unit according to the first embodiment, FIG. 2 is a perspective view of the isolation plate, and FIG. 3 is a cross-sectional view of the heater mounting portion.
In these drawings, 1 is an outdoor unit base of an outdoor unit of an air conditioner, 1a is a flat bottom of the outdoor unit base 1, 1b is a screw hole of the outdoor unit base 1, 2 is a heat exchanger, 2a is a heat exchanger 2 Bottom portion, 3 is a tubular heater such as a sheathed heater, 3a is a tube portion of the heater 3, 4 is a drain hole provided in the base of the outdoor unit, 5 is an isolation plate, 5a is a recess of the isolation plate 5, and 5b is an isolation plate 5, 6 is a fixing screw for fixing the isolation plate 5 to the outdoor unit base, 7 is a drain socket, 8 is a convex portion in the recess 5 a of the isolation plate 5, and 9 is formed at the center of the isolation plate 5. Socket hole.
[0011]
The outdoor unit base 1 is a shallow container having a flat bottom 1a with a flat bottom, and a drain hole 4 having a circular cross section that is open to a part of the flat bottom 1a is formed in the flat bottom 1a. However, the cross section is not limited to a circular shape, but may be a free shape, but the drain socket 7 can be attached so as to open at a part of the flat bottom 1a, and concentrated drainage can be performed from here. That is, the drain hole 4 is a drain hole 4 that is opened in a part of the flat bottom 1a, so that the drain socket 7 is attached to the drain hole 4 when the outdoor unit is installed on a veranda or the like by using a suspension base. By connecting the hose, it is possible to guide the drain and prevent the water from dripping.
In the example of FIG. 1, the heat exchanger 2 has a thin L shape. Although it is not necessarily thin, in particular, the dripping range of the drain is limited, and when the heat exchanger 2 is surrounded by the tube portion 3a of the heater 3, the temperature in the enclosed flat bottom 1a is high. It is easy to go up and keep warm, which is advantageous for preventing the drain from freezing.
[0012]
The heater 3 is a tubular heater such as a sheathed heater, and has a shape that follows the outer peripheral shape of the bottom portion 2a of the heat exchanger 2 and has a substantially closed shape, that is, in the example of FIG. 1, the L-shape of the bottom portion 2a. The pipe portion 3a is bent into a shape similar to the shape, and processed into a shape that forms an L-shaped enclosure that is substantially closed on a plane. Further, the heat exchanger 2 is processed to have substantially the same size as the outer peripheral shape of the bottom 2a.
Here, the “substantially closed shape” means that when the tubular heater 3 forms a shape that follows the outer peripheral shape of the bottom 2a of the heat exchanger 2, even if there is an open portion, the heater 3 is in this portion. It is included in the “substantially closed shape” as long as the drain does not freeze in the enclosure. In addition, “substantially the same size” includes a case where the overall outer shape of the bottom 2a of the heat exchanger 2 is one size larger or one size smaller, and there is a partial shape difference. Is also included.
The heater 3 is installed on the flat bottom of the outdoor unit base so as to surround the heat exchanger 2, or is installed so that most of the shape of the heater 3 is below the heat exchanger 2, or the heater Install so that at least half of the three shapes are below the heat exchanger 2.
Therefore, the heater 3 is formed in a shape that follows the outer peripheral shape of the bottom portion 1a of the heat exchanger 2 and is approximately the same size as the outer peripheral shape. Therefore, the heater 3 is heated on the flat bottom 1a of the outdoor unit base 1. When installed so as to surround the exchanger 2, the heater 3 is not greatly separated from the installation space of the heat exchanger 2, and when installed so that more than half is below the heat exchanger 2, the heat exchanger 2 is not far away from the space surrounded by the heater 3.
Therefore, the drain dripping from the heat exchanger 2 is almost within the enclosure shape of the tubular heater 3, and when the heater 3 is energized, the enclosure shape of the tubular heater 3 on the flat bottom 1 a of the outdoor unit base 1 is The drainage can be prevented by raising the temperature.
[0013]
As shown in FIG. 2, the isolation plate 5 has a rectangular shape as a whole, long recesses 5a and 5a are formed in the longitudinal direction of both ends, and two screws 6 are inserted in the center of both end portions in the longitudinal direction. Screw holes 5b and 5b are formed, and a socket 9 is formed at a portion surrounded by the recesses 5a and 5a and the two screw holes 5b and 5b for the screw 6, that is, at the center. Further, the socket hole 9 formed in the central portion of the isolation plate 5 has the isolation plate 5 attached to the flat bottom 1a so that the drain hole 4 opens in the socket hole 9, so that the bottom of the drain hole 4 (the bottom plate 1a This is a shape that does not interfere with the drain socket 7 attached from the side opposite to the heat exchanger 2 side.
[0014]
Next, these assemblies will be described.
A heater 3 is installed on the flat bottom 1 a of the outdoor unit base 1. At this time, the drain hole 4 and the two screw holes 1 b and 1 b for the screw 6 are made to enter an L-shaped substantially closed enclosure formed by the tube portion 3 a of the heater 3. In this case, by making the drain hole 4 within the enclosure of the heater 3, it is possible to prevent the drain hole 4 from being blocked by drain freezing.
Then, the long concave portions 5a and 5a of the isolation plate 5 are aligned with the parallel pipe portion 3a of the heater 3, that is, the pipe portion 3a of the heater 3 in the vicinity of the drain hole 4, and screw holes 5b and 5b for the screw 6 are also provided. Is aligned with the screw holes 1b and 1b, the isolation plate 5 is placed on the heater 3 on the flat bottom 1a, the two screws 6 and 6 are screwed in, and the heater 3 is fixed to the outdoor unit base 1. At this time, the heater 3 is fixed by pressing the parallel tube portion 3a against the flat bottom 1a while enclosing it with the long concave portions 5a and 5a.
[0015]
Next, the heat exchanger 2 is installed on the flat bottom 1a. The heat exchanger 2 may be installed in the enclosure of the tube portion 3a of the heater 3, that is, the heater 3 may be installed so as to surround the heat exchanger. Further, the heat exchanger 2 may be installed on the tube portion 3 a of the heater 3, that is, the tube portion 3 a of the heater 3 may be installed below the heat exchanger 2.
However, when the heater 3 is installed so as to be under the pipe portion 2 a of the heat exchanger 2, the heat exchanger 2 is not greatly protruded from the pipe portion 2 a of the heater 3. That is, more than half of the tube portion 2 a of the L-shaped heater 3 is placed under the heat exchanger 2.
Finally, the drain socket 7 is attached to the drain hole 4 of the flat bottom 1a from the side opposite to the heat exchanger 2 side.
Note that a blower that blows air to the heat exchanger 2 is installed in an empty portion on the outdoor base 1.
[0016]
The fixing of the heater 3 by the isolation plate 5 will be further described with reference to FIGS. One convex portion 8 in the concave portion 5a of the isolation plate 5 protrudes from the apex of the inner surface of the concave portion 5a toward the tube portion 3a one by one near both ends of the long concave portion 5a. Then, the concave portion 5a surrounds the tube portion 3a and is screwed, whereby the convex portion 8 comes into contact with the tube portion 3a and is pressed against the flat bottom 1a. That is, a gap is formed between the other part of the recess 5 a of the isolation plate 5 and the heater 3. However, a plurality of (for example, 2 to 3) convex portions 8 may be provided near both ends. In this case, it can fix more stably.
Further, by surrounding the parallel tube portion 3a with the recesses 5a and 5a of the isolation plate 5, the tube portion 3a of the heater 3 around the drain hole 4 is not exposed.
Therefore, the isolation plate 5 functions to fix the heater 3 to the outdoor unit base 1 and to prevent the finger from touching the heater 3 directly when the finger is inserted from the drain hole 4 after installation, thereby preventing product burns. It also serves to ensure sex.
[0017]
Next, the function of the convex portion 8 in the concave portion 5a of the isolation plate 5 will be described.
When the heater 3 is energized in order to prevent drainage from draining and draining in winter, the temperature of the heater 3 does not rise so high as to cause burns. However, if the heater is energized in the summer due to a runaway control circuit, etc. Considering this, it is necessary to protect the heater 3 and the part that may touch the surrounding fingers from being heated.
Since the outdoor unit base 1 itself has a large amount of heat transfer from the part in contact with the heater 3 to the surroundings, if the heater unit of the outdoor unit base 1 is touched from the lower surface of the flat bottom 1a, it will cause burns. However, in the isolation plate 5 having a small part area, the temperature of the isolation plate 5 itself increases as the temperature of the heater 3 rises, so that a burn is caused by putting a finger through the drain hole 4 and touching the isolation plate 5. there is a possibility.
Therefore, the isolation plate 5 is provided with a convex portion 8 for reducing the direct contact portion with the heater 3, and a gap is provided between the isolation plate 5 and the heat conduction to keep the temperature of the isolation plate 5 low. be able to.
[0018]
A drain hole 4 provided in the flat plate 1a of the outdoor unit base 1 is placed in an L-shaped enclosure formed by the tube portion 3a of the heater 3 (so as to enter a substantially closed shape), and one place. It is good also as several places (for example, 2-3 places). When this outdoor unit is installed at a high place, a drain socket 7 is attached to each, a hose is attached to the drain socket 7, and the drain is gathered in the middle to guide the drain.
Further, the drain hole 4 may have a long hole shape. However, in this case, the drain hole 4 is placed in an L-shaped enclosure formed by the tube portion 3a of the heater 3 (so that it is in a substantially closed shape), and the drain socket 7 is attached. Absent. In this case, the heater 3 is attached to the flat bottom 1a of the outdoor unit base 1 by any ordinary method. If it is a long hole, since it is in the enclosure of the heater 3, the drain is not frozen, and the dripped drain is immediately discharged to the outside from the opening of the nearby drain hole 4.
[0019]
According to the outdoor unit of the air conditioner of the present embodiment, the drain hole 4 is formed as a drain hole 4 that opens to a part of the flat bottom 1 a, and the pipe portion 3 a of the heater 3 in the vicinity of the drain hole 4 is connected to the isolation plate 5. Since the heater 3 is fixed by being pressed against the flat bottom 1a of the outdoor unit base while being surrounded by the formed long concave portion 5a, the heater 3 can be fixed to the outdoor unit base 1 by the isolation plate 5 and directly from the drain hole 4. A finger can be prevented from coming into contact with the heater 3.
[0020]
Moreover, according to the outdoor unit of the air conditioner of the present embodiment, when the tube portion 3a of the heater 3 is pressed by the long concave portion 5a, it is pressed by the convex portion 8 formed on the inner surface of the concave portion 5a of the isolation plate 5. In addition to being able to fix the heater 3, even if the heater is energized, the temperature of the isolation plate 5 can be prevented from becoming high, and burns when in contact are prevented.
[0021]
Moreover, according to the outdoor unit of the air conditioner of the present embodiment, the drain socket 7 is attached to the drain hole 4 from the side opposite to the heat exchanger 2 side, and the isolation plate 5 has the socket hole 9 at the center. Since the isolation plate 5 is attached to the flat bottom 1a of the outdoor unit base 1 so that the drain hole 4 is opened in the socket hole 9, the isolation plate is used when the drain socket 7 is attached to the drain hole 4 of the outdoor unit base 1. By the socket hole 9 provided in 5, the drain socket 7 and the isolation plate 5 can be attached without interfering with each other.
[0022]
【The invention's effect】
An outdoor unit of an air conditioner according to the present invention is an outdoor unit in which a heat exchanger is installed on an outdoor unit base, and a tubular heater is substantially closed in a shape that follows the outer peripheral shape of the bottom of the heat exchanger. The heater is installed on the flat bottom of the outdoor unit base so as to surround the heat exchanger, or more than half of the heater shape is a heat exchanger. In addition, install so that the drain hole that opens to the flat bottom of the outdoor unit base is within the almost closed shape of the heater, and make the drain hole open to a part of the flat bottom. The heater is fixed by holding it on the flat bottom of the outdoor unit base while enclosing the pipe part of the heater near the drain hole with a long concave part formed in the isolation plate, and the drain hole is on the opposite side of the heat exchanger side To which the drain socket can be installed , And the one in which isolated plate has a socket hole in the middle part, attaching the isolation plate such drain hole is opened in the socket hole in the outdoor unit based flat bottom.
[0023]
Therefore, since the heater is formed in a shape that follows the outer peripheral shape of the bottom of the heat exchanger and is approximately the same size as the outer peripheral shape, the heater is surrounded by the heat exchanger on the flat bottom of the outdoor unit base. If the heater is installed so that the heater is not greatly separated from the installation space of the heat exchanger and more than half is below the heat exchanger, the heat exchanger is greatly separated from the space surrounded by the heater. In any case, the drain dripping from the heat exchanger is almost within the enclosure shape of the tubular heater. Then, by energizing the heater, the inside of the flat-bottomed tubular heater enclosure of the outdoor unit base is heated to prevent the drain from freezing.
In addition, since the drain hole is within the enclosure of the tubular heater, the drain hole is not frozen, so that the drain can be discharged to the outside from the drain hole.
Moreover, since the outdoor unit base is provided with a heater and a heat exchanger on a flat bottom, the structure of the outdoor unit base can be simplified.
In addition, the heater is fixed by holding it on the flat bottom of the outdoor unit base while enclosing the heater tube part with a long recess formed in the isolation plate, so the temperature of the isolation plate will increase even if the heater is energized. Can prevent burns when touching.
In addition, a drain socket is attached to the drain hole from the side opposite to the heat exchanger side. The isolation plate has a socket hole in the center, and the isolation plate is installed outdoors so that the drain hole opens in the socket hole. Since the drain socket is attached to the flat bottom of the machine base, when the drain socket is attached to the drain hole of the outdoor unit base, the drain socket and the isolation board can be attached without interference by the socket hole provided in the isolation board.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an outdoor unit of an air conditioner according to Embodiment 1 of the present invention.
FIG. 2 is a perspective view of an isolation plate according to Embodiment 1 of the present invention.
FIG. 3 is a cross-sectional view showing a heater mounting portion according to Embodiment 1 of the present invention.
FIG. 4 is a cross-sectional view showing an outdoor unit base portion of a conventional air conditioner.
FIG. 5 is a perspective view showing an outdoor unit base portion of a conventional air conditioner.
[Explanation of symbols]
1 outdoor unit base, 1a flat bottom, 2 heat exchanger, 2a bottom, 3 heater, 3a pipe, 4 drain hole, 5 isolation plate, 5a recess, 7 drain socket, 8 protrusion, 9 socket hole.

Claims (1)

室外機ベース上に熱交換器を設置する室外機において、
管状のヒーターを熱交換器の底部の外周形状に倣った形状で、ほぼ閉じた形状に、また、前記外周形状とほぼ同じ大きさの形状に形成し、
前記ヒーターを、室外機ベースの平底上で、前記熱交換器を囲むように設置するか、または前記ヒーター形状の半分以上が前記熱交換器の下になるように設置し、さらに、室外機ベースの前記平底に開口するドレン穴が前記ヒーターのほぼ閉じた形状の内にあるように設置し、
前記ドレン穴を平底の一部に開口するドレン穴とし、前記ドレン穴の近傍の前記ヒーターの管部を隔絶板に形成した長形の凹部で囲いながら前記室外機ベースの前記平底に押さえることにより、前記ヒーターを固定し、
前記ドレン穴には、前記熱交換器側と反対側からドレンソケットが取付けられる構造であり、前記隔絶板が中央部にソケット穴を有し、前記ソケット穴内に前記ドレン穴が開口するように前記隔絶板を前記室外機ベースの前記平底に取付けることを特徴とする空気調和機の室外機。In an outdoor unit that installs a heat exchanger on the outdoor unit base,
The tubular heater has a shape that follows the outer peripheral shape of the bottom of the heat exchanger, is formed in a substantially closed shape, and is formed in a shape that is approximately the same size as the outer peripheral shape,
The heater is installed on the flat bottom of the outdoor unit base so as to surround the heat exchanger, or is installed so that more than half of the heater shape is under the heat exchanger. Installed so that the drain hole opening in the flat bottom of the heater is within the substantially closed shape of the heater ,
The drain hole is a drain hole that opens to a part of the flat bottom, and the heater tube in the vicinity of the drain hole is surrounded by a long concave portion formed in an isolation plate, and is held by the flat bottom of the outdoor unit base. Fixing the heater,
A drain socket is attached to the drain hole from the side opposite to the heat exchanger side, the isolation plate has a socket hole in the center, and the drain hole opens in the socket hole. An outdoor unit for an air conditioner , wherein an isolation plate is attached to the flat bottom of the outdoor unit base .
JP2002231328A 2002-08-08 2002-08-08 Air conditioner outdoor unit Expired - Lifetime JP3882910B2 (en)

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JPH02118347A (en) * 1988-10-27 1990-05-02 Mitsubishi Electric Corp Outdoor unit of air conditioner
JPH1114097A (en) * 1997-06-20 1999-01-22 Fujitsu General Ltd Outdoor unit of air conditioner

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CN103988026B (en) * 2011-12-12 2015-09-02 大金工业株式会社 Heater and possess the outdoor unit of refrigerating plant of this heater
EP2738476A2 (en) 2012-11-29 2014-06-04 Mitsubishi Electric Corporation Outdoor unit of air-conditioning apparatus
CN103851712A (en) * 2012-11-29 2014-06-11 三菱电机株式会社 Outdoor unit of air conditioner

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