JP2015206575A - Outdoor unit of air conditioner - Google Patents

Outdoor unit of air conditioner Download PDF

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JP2015206575A
JP2015206575A JP2014089210A JP2014089210A JP2015206575A JP 2015206575 A JP2015206575 A JP 2015206575A JP 2014089210 A JP2014089210 A JP 2014089210A JP 2014089210 A JP2014089210 A JP 2014089210A JP 2015206575 A JP2015206575 A JP 2015206575A
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outdoor unit
heater
heat exchanger
bottom plate
air conditioner
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JP6223269B2 (en
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良平 荒木
Ryohei Araki
良平 荒木
琢也 向山
Takuya Mukoyama
琢也 向山
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to CN201520223240.8U priority patent/CN204629831U/en
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Abstract

PROBLEM TO BE SOLVED: To provide an outdoor unit of an air conditioner having high reliability even in an environment of low outside air temperature by suppressing freezing which starts from the neighborhood of a bottom surface of a heat exchanger.SOLUTION: An outdoor unit of an air conditioner includes a freezing prevention heater 3 formed into the shape that one (outdoor unit bottom plate-side heater portion 3a) of two heater portions in parallel with each other is kept into contact with or close to an outdoor unit bottom plate 1, and the other (heat exchanger-side heater portion 3b) is positioned above the outdoor unit bottom plate-side heater portion 3a and kept into contact with or close to the heat exchanger bottom surface, on a tapered portion 1a or a lowermost portion 1b of the outdoor unit bottom plate 1 where a distance between the outdoor unit bottom plate 1 and the bottom surface of the heat exchanger 2 is increased.

Description

本発明は、空気調和機の室外機に関するものである。   The present invention relates to an outdoor unit of an air conditioner.

一般に、ヒートポンプ式空気調和機は室内機と室外機とから構成され、暖房運転時には室外機に設置された熱交換器で室外空気から熱を吸収するため、空気中の水分が熱交換器の表面にて凝縮（結露）することがある。このようにして発生した凝縮水は熱交換器から流れ落ち、熱交換器が設置されている室外機底板上にドレン水となって溜まる。そして、このドレン水は、室外機底板の最下部に形成されたドレン穴を経由して機外へ排水されるようになっている。   In general, a heat pump air conditioner is composed of an indoor unit and an outdoor unit. During heating operation, the heat exchanger installed in the outdoor unit absorbs heat from the outdoor air, so moisture in the air is exposed to the surface of the heat exchanger. Condensation (condensation) may occur. The condensed water generated in this manner flows down from the heat exchanger and accumulates as drain water on the outdoor unit bottom plate where the heat exchanger is installed. And this drain water is drained outside the machine via a drain hole formed in the lowermost part of the outdoor unit bottom plate.

また、空気調和機の運転中に室外温度が下がると、熱交換器の表面温度も下がり凍結し始める。そうすると、熱交換器は氷で覆われて室外空気との熱交換ができなくなり、吸熱効果が減少し、暖房能力も低下する。この暖房能力の低下を防止するため、霜取り運転に入り、熱交換器表面の氷を融かすようにしている。そして、氷を融かした水（融解水）は室外機底板上へと流れ落ちてドレン穴から排水されるようになっている。   Further, when the outdoor temperature decreases during the operation of the air conditioner, the surface temperature of the heat exchanger also decreases and begins to freeze. If it does so, a heat exchanger will be covered with ice and heat exchange with outdoor air will become impossible, an endothermic effect will decrease, and heating capacity will also fall. In order to prevent this heating capacity from deteriorating, the defrosting operation is started to melt the ice on the surface of the heat exchanger. And the water (melted water) which melted ice flows down on an outdoor unit bottom plate, and is drained from a drain hole.

しかし、寒冷地等で外気温が非常に低い場合、発生した凝縮水や融解水はドレン穴から排水される前に熱交換器底面や室外機底板上にて凍結してしまう。そして、一度凍結すると凍結は進行し、熱交換器が氷で覆われてしまい暖房能力が低下したり、氷の成長によって熱交換器を構成する配管が潰れたり、熱交換器に対峙して配置されたプロペラファンが氷との接触によって破壊したりする。   However, when the outside air temperature is very low in a cold district or the like, the generated condensed water and molten water are frozen on the heat exchanger bottom surface and the outdoor unit bottom plate before being drained from the drain hole. Once frozen, freezing proceeds, the heat exchanger is covered with ice and the heating capacity is reduced, the piping constituting the heat exchanger is crushed due to the growth of ice, or it is placed facing the heat exchanger The propeller fan is destroyed by contact with ice.

このため、室外機底板上に凍結防止ヒーターを設置して凝縮水や融解水の凍結を防止している（例えば、特許文献１参照）。   For this reason, the freeze prevention heater is installed on the outdoor unit bottom plate to prevent freezing of condensed water and molten water (see, for example, Patent Document 1).

特開２０１０−７１５１４号公報JP 2010-71514 A

一般に、室外機底板には、凝縮水や融解水の排水を促すため、テーパ部および最下部が設けられている。従来の空気調和機の室外機では、ヒーターは室外機底板上の起伏に沿うように形成されていたため、特に熱交換器とヒーターとの間隔が広がるテーパ部または最下部において、熱交換器底面近傍を起点に発生した氷が成長し、熱交換器を構成する配管を破壊する等の問題点があった。   In general, the outdoor unit bottom plate is provided with a tapered portion and a lowermost portion to promote drainage of condensed water and molten water. In the conventional outdoor unit of an air conditioner, the heater is formed along the undulations on the bottom plate of the outdoor unit, so in the vicinity of the bottom of the heat exchanger, especially at the taper part or the lowermost part where the space between the heat exchanger and the heater widens. As a result, there was a problem that ice generated from the point of growth grew and the piping constituting the heat exchanger was broken.

本発明は、上記に鑑みてなされたものであって、熱交換器底面近傍を起点に発生する氷結を抑制し、外気温度が低い環境においても信頼性の高い空気調和機の室外機を提供することを目的とする。   The present invention has been made in view of the above, and provides an outdoor unit for an air conditioner that is highly reliable even in an environment where the outside air temperature is low by suppressing freezing that occurs near the bottom of the heat exchanger. For the purpose.

上述した課題を解決し、目的を達成するために、本発明に係る空気調和機の室外機は、周囲よりも低く形成された排水領域を一部に有する室外機底板と、前記排水領域をまたぐようにして前記室外機底板上に設置された熱交換器と、前記室外機底板と前記熱交換器との間に配置され、互いに並列する線状の第１および第２のヒーター部を有する凍結防止用のヒーターと、を備え、前記排水領域の少なくとも一部では、前記第１のヒーター部は室外機底板側に配置され、前記第２のヒーター部は前記第１のヒーター部よりも上方に位置して熱交換機側に配置されることを特徴とする。   In order to solve the above-described problems and achieve the object, an outdoor unit of an air conditioner according to the present invention straddles an outdoor unit bottom plate partially including a drainage region formed lower than the surroundings and the drainage region. In this way, the heat exchanger installed on the outdoor unit bottom plate, and the freezing having the linear first and second heater units arranged between the outdoor unit bottom plate and the heat exchanger and arranged in parallel with each other A heater for prevention, and in at least a part of the drainage area, the first heater part is disposed on the outdoor unit bottom plate side, and the second heater part is located above the first heater part. It is located and arrange | positioned at the heat exchanger side, It is characterized by the above-mentioned.

本実施の形態によれば、熱交換器底面近傍を起点に発生する氷結を抑制し、外気温度が低い環境においても信頼性の高い空気調和機の室外機を提供することができる。   According to the present embodiment, it is possible to provide a highly reliable outdoor unit of an air conditioner that suppresses freezing that occurs from the vicinity of the bottom surface of the heat exchanger and that is highly reliable even in an environment where the outside air temperature is low.

図１は、実施の形態に係る空気調和機の室外機の分解斜視図である。FIG. 1 is an exploded perspective view of an outdoor unit of an air conditioner according to an embodiment. 図２は、実施の形態に係る空気調和機の室外機の断面図である。Drawing 2 is a sectional view of the outdoor unit of the air harmony machine concerning an embodiment.

以下に、本発明に係る空気調和機の室外機の実施の形態を図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。   Embodiments of an outdoor unit for an air conditioner according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

実施の形態．
図１は、本実施の形態に係る空気調和機の室外機の分解斜視図、図２は、本実施の形態に係る空気調和機の室外機の断面図である。図１および図２に示すように、本実施の形態に係る空気調和機の室外機は、熱交換器２、ヒーター３、および室外機底板１等を備えている。室外機の構成要素のうち図１に示したもの以外のもの（例えば、圧縮機）は、図示を省略している。空気調和機は、室外機と、室外機に接続された室内機（図示せず）とを備えて構成される。 Embodiment.
FIG. 1 is an exploded perspective view of an outdoor unit for an air conditioner according to the present embodiment, and FIG. 2 is a cross-sectional view of the outdoor unit for the air conditioner according to the present embodiment. As shown in FIGS. 1 and 2, the outdoor unit of the air conditioner according to the present embodiment includes a heat exchanger 2, a heater 3, an outdoor unit bottom plate 1, and the like. Of the components of the outdoor unit, those other than those shown in FIG. 1 (for example, a compressor) are not shown. The air conditioner includes an outdoor unit and an indoor unit (not shown) connected to the outdoor unit.

熱交換器２は、室外機底板１上に設置される。熱交換器２は、上方から平面視で例えば略Ｌ字状であり、その幅は略一定である。   The heat exchanger 2 is installed on the outdoor unit bottom plate 1. The heat exchanger 2 has, for example, a substantially L shape in plan view from above, and its width is substantially constant.

室外機底板１は、平底部１ｄと、平底部１ｄと一体に形成され平底部１ｄに対して傾斜したテーパ部１ａと、平底部１ｄと平行でテーパ部１ａを介して平底部１ｄにつながる最下部１ｂと、テーパ部１ａおよび最下部１ｂと併せて例えば長方形状に構成された平底部１ｄの周囲を囲むように立設された縁部１ｅとを備えて構成される。ここで、テーパ部１ａは、例えば最下部１ｂを挟んで傾斜した一対の傾斜面から成り、これらの傾斜面は最下部１ｂに向かって下るように構成される。テーパ部１ａおよび最下部１ｂは、例えば縁部１ｅに沿って形成されている。室外機底板１は、縁部１ｅにより浅い容器状の形状となる。   The outdoor unit bottom plate 1 includes a flat bottom portion 1d, a tapered portion 1a formed integrally with the flat bottom portion 1d and inclined with respect to the flat bottom portion 1d, and connected to the flat bottom portion 1d through the tapered portion 1a in parallel with the flat bottom portion 1d. The lower part 1b is combined with the tapered part 1a and the lowermost part 1b, and includes, for example, an edge part 1e erected so as to surround the periphery of the flat bottom part 1d having a rectangular shape. Here, the taper portion 1a includes, for example, a pair of inclined surfaces that are inclined with the lowermost portion 1b interposed therebetween, and these inclined surfaces are configured to descend toward the lowermost portion 1b. The tapered portion 1a and the lowermost portion 1b are formed along the edge portion 1e, for example. The outdoor unit bottom plate 1 has a shallow container shape due to the edge 1e.

テーパ部１ａおよび最下部１ｂは、熱交換器２から発生する凝縮水または融解水の排水を促すために設けられ、最下部１ｂには排水用のドレン穴４が設けられている。熱交換器２は、テーパ部１ａおよび最下部１ｂをまたがるようにして平底部１ｄ上に設置され、ドレン穴４は熱交換器底面２ａの下方に位置している。このため、テーパ部１ａおよび最下部１ｂでは、室外機底板１と熱交換器底面２ａとの距離が、平底部１ｄにおける場合と比較して大きくなる。また、最下部１ｂには、例えば２個のネジ穴１ｃが設けられている。   The tapered portion 1a and the lowermost portion 1b are provided to promote drainage of condensed water or molten water generated from the heat exchanger 2, and a drain hole 4 for drainage is provided in the lowermost portion 1b. The heat exchanger 2 is installed on the flat bottom portion 1d so as to straddle the taper portion 1a and the lowermost portion 1b, and the drain hole 4 is positioned below the heat exchanger bottom surface 2a. For this reason, in the taper part 1a and the lowest part 1b, the distance of the outdoor unit bottom plate 1 and the heat exchanger bottom face 2a becomes large compared with the case of the flat bottom part 1d. The lowermost part 1b is provided with, for example, two screw holes 1c.

熱交換器２と室外機底板１との間には、管状のヒーター３が配置される。ヒーター３は、例えばシーズヒーターである。ヒーター３は、両端部にそれぞれ端子８が設けられた線状のものを熱交換器底面２ａの外周形状に沿ってループ状にして構成されている。ここで、熱交換器底面２ａの外周形状は平面視したときの外周形状である。従って、ヒーター３は、熱交換器底面２ａの外周形状と略同形状で略同じ大きさである。この場合、ヒーター３は、熱交換器底面２ａの外周形状よりも小さくてもよく、もしくは、熱交換器底面２ａの外周形状よりも大きくてもよく、または、その一部が熱交換器底面２ａの外周形状よりも小さくかつ残部が熱交換器底面２ａの外周形状よりも大きくてもよい。また、この場合、ヒーター３は、端子８間で不連続となるループを成している。   A tubular heater 3 is arranged between the heat exchanger 2 and the outdoor unit bottom plate 1. The heater 3 is, for example, a sheathed heater. The heater 3 is configured in a loop shape along the outer peripheral shape of the bottom surface 2a of the heat exchanger, which is linear with terminals 8 provided at both ends. Here, the outer peripheral shape of the heat exchanger bottom surface 2a is an outer peripheral shape when seen in a plan view. Accordingly, the heater 3 has substantially the same size and the same shape as the outer peripheral shape of the heat exchanger bottom surface 2a. In this case, the heater 3 may be smaller than the outer peripheral shape of the heat exchanger bottom surface 2a, or may be larger than the outer peripheral shape of the heat exchanger bottom surface 2a, or a part thereof may be the heat exchanger bottom surface 2a. The outer peripheral shape may be smaller and the remaining portion may be larger than the outer peripheral shape of the heat exchanger bottom surface 2a. In this case, the heater 3 forms a discontinuous loop between the terminals 8.

ヒーター３は、室外機底板１と熱交換器底面２ａとの距離が平底部１ｄにおける場合と比較して大きくなるテーパ部１ａもしくは最下部１ｂまたはこれらの双方において、互いに並列する室外機底板側ヒーター部３ａ（第１のヒータ部）と熱交換器側ヒーター部３ｂ（第２のヒータ部）を含んでいる。ここで、室外機底板側ヒーター部３ａは、室外機底板１側に配置され、具体的には室外機底板１に接触または近接して配置される。また、熱交換器側ヒーター部３ｂは、室外機底板側ヒーター部３ａよりも上方に位置して、熱交換器２側に配置され、具体的には熱交換器底面２ａに接触または近接して配置されている。室外機底板側ヒーター部３ａおよび熱交換器側ヒーター部３ｂは、それぞれヒーター３の一部を構成することからいずれも線状である。室外機底板側ヒーター部３ａおよび熱交換器側ヒーター部３ｂは、平面視で熱交換器２の幅方向に対向している。また、図示例では、室外機底板側ヒーター部３ａおよび熱交換器側ヒーター部３ｂは、テーパ部１ａおよび最下部１ｂにわたって形成されている。   The heater 3 is an outdoor unit bottom plate side heater that is parallel to each other in the tapered part 1a or the lowermost part 1b or both of which the distance between the outdoor unit bottom plate 1 and the heat exchanger bottom 2a is larger than that in the flat bottom part 1d. A part 3a (first heater part) and a heat exchanger side heater part 3b (second heater part) are included. Here, the outdoor unit bottom plate heater 3a is disposed on the outdoor unit bottom plate 1 side, and specifically, is disposed in contact with or close to the outdoor unit bottom plate 1. Moreover, the heat exchanger side heater part 3b is located above the outdoor unit bottom plate side heater part 3a, and is disposed on the heat exchanger 2 side. Specifically, the heat exchanger side heater part 3b is in contact with or close to the heat exchanger bottom surface 2a. Has been placed. Since the outdoor unit bottom plate side heater unit 3a and the heat exchanger side heater unit 3b constitute part of the heater 3, they are both linear. The outdoor unit bottom plate side heater unit 3a and the heat exchanger side heater unit 3b face each other in the width direction of the heat exchanger 2 in plan view. Moreover, in the example of illustration, the outdoor unit bottom plate side heater part 3a and the heat exchanger side heater part 3b are formed over the taper part 1a and the lowermost part 1b.

また、ヒーター３は、室外機底板側ヒーター部３ａおよび熱交換器側ヒーター部３ｂの配置を保持するように、固定具５により室外機底板１に固定されている。具体的には、固定具５には凹溝５ａが形成されており、室外機底板１上のヒーター３の一部が凹溝５ａ内に配置され固定具５で上から覆われるようにし、固定具５を挿通した固定ネジ６をネジ穴１ｃにねじ込むことにより固定具５を介してヒーター３を室外機底板１に固定している。図示例では、ヒーター３は、室外機底板側ヒーター部３ａの一部が固定具５で最下部１ｂに固定されることにより、室外機底板１に固定されている。この場合、ヒーター３の固定が容易である。   The heater 3 is fixed to the outdoor unit bottom plate 1 by a fixture 5 so as to maintain the arrangement of the outdoor unit bottom plate side heater unit 3a and the heat exchanger side heater unit 3b. Specifically, a concave groove 5a is formed in the fixture 5, and a part of the heater 3 on the outdoor unit bottom plate 1 is disposed in the concave groove 5a and covered with the fixture 5 from above. The heater 3 is fixed to the outdoor unit bottom plate 1 through the fixing tool 5 by screwing the fixing screw 6 through which the tool 5 is inserted into the screw hole 1c. In the illustrated example, the heater 3 is fixed to the outdoor unit bottom plate 1 by fixing a part of the outdoor unit bottom plate side heater part 3 a to the lowermost part 1 b by the fixture 5. In this case, the heater 3 can be easily fixed.

このように、本実施の形態では、２本の線状のヒーター部（室外機底板側ヒーター部３ａ、熱交換器側ヒーター部３ｂ）がテーパ部１ａもしくは最下部１ｂまたはこれらの双方にて並列して配置され、２本のうちの１本（室外機底板側ヒーター部３ａ）が室外機底板側に配置され、２本のうちのもう１本（熱交換器側ヒーター部３ｂ）がより上方で熱交換器側に配置されている。   Thus, in this embodiment, two linear heater parts (outdoor unit bottom plate side heater part 3a, heat exchanger side heater part 3b) are arranged in parallel at the taper part 1a or the lowermost part 1b or both. One of the two (outdoor unit bottom plate side heater unit 3a) is arranged on the outdoor unit bottom plate side, and the other one of the two units (heat exchanger side heater unit 3b) is further upward It is arranged on the heat exchanger side.

次に、本実施の形態の動作および効果について説明する。このように構成された空気調和機の室外機においては、暖房運転によって空気中の水分が凝縮すると、熱交換器２表面には凝縮水が発生する。また、霜取り運転によって熱交換器２表面の氷を融解すると、熱交換器２表面には融解水が発生する。   Next, the operation and effect of the present embodiment will be described. In the outdoor unit of the air conditioner configured as described above, condensed water is generated on the surface of the heat exchanger 2 when moisture in the air is condensed by the heating operation. Further, when the ice on the surface of the heat exchanger 2 is melted by the defrosting operation, molten water is generated on the surface of the heat exchanger 2.

ヒーター３は、外気温が非常に低い場合に通電され、発熱して高温となる。上記のように熱交換器側ヒーター部３ｂが設置されていることにより、熱交換器底面２ａ近傍での凝縮水や融解水の凍結を抑制することができる。また、上記のように室外機底板側ヒーター部３ａが設置されていることにより、熱交換器２から室外機底板１上に流れ落ちた凝縮水や融解水の凍結を抑制することができる。   The heater 3 is energized when the outside air temperature is very low, generates heat and becomes high temperature. By installing the heat exchanger side heater section 3b as described above, freezing of condensed water and molten water in the vicinity of the heat exchanger bottom surface 2a can be suppressed. Moreover, freezing of the condensed water and molten water which flowed on the outdoor unit bottom plate 1 from the heat exchanger 2 can be suppressed by installing the outdoor unit bottom plate side heater part 3a as mentioned above.

以上説明したように、本実施の形態によれば、室外機底板１と熱交換器底面２ａとの距離が大きくなる室外機底板１のテーパ部１ａもしくは最下部１ｂまたはこれら双方において、並列する２本のうちの１本（熱交換器側ヒーター部３ｂ）はもう１本（室外機底板側ヒーター部３ａ）よりも上方に位置して熱交換器底面２ａに接触または近接する形状に成形した凍結防止用のヒーター３を設けるようにしたので、熱交換器底面２ａ近傍を起点に発生する氷結を抑制する効果を奏する。これにより、従来のように、熱交換器底面２ａの近傍を起点に発生した氷が成長し、熱交換器２を構成する配管１０（図２）が破壊されることを防止することが可能になる。   As described above, according to the present embodiment, the taper portion 1a and / or the lowermost portion 1b of the outdoor unit bottom plate 1 in which the distance between the outdoor unit bottom plate 1 and the heat exchanger bottom surface 2a increases becomes parallel. One of the books (heat exchanger side heater part 3b) is located above the other (outdoor unit bottom plate side heater part 3a) and is frozen in a shape that is in contact with or close to the heat exchanger bottom face 2a. Since the heater 3 for prevention is provided, there is an effect of suppressing icing that occurs from the vicinity of the heat exchanger bottom 2a. As a result, it is possible to prevent the ice generated starting from the vicinity of the bottom surface 2a of the heat exchanger from growing and the pipe 10 (FIG. 2) constituting the heat exchanger 2 from being broken as in the past. Become.

さらに、本実施の形態によれば、熱交換器側ヒーター部３ｂを設けることにより、ヒーター３の余熱が熱交換器２で吸熱され、エアコンシステムとしての消費電力を低減させる効果も奏する。   Furthermore, according to this Embodiment, by providing the heat exchanger side heater part 3b, the remaining heat of the heater 3 is absorbed by the heat exchanger 2, and there also exists an effect which reduces the power consumption as an air-conditioner system.

また、本実施の形態によれば、室外機底板１と熱交換器底面２ａとの距離が大きくなる室外機底板１のテーパ部１ａもしくは最下部１ｂまたはこれら双方において、並列する２本のうちの１本（室外機底板側ヒーター部３ａ）はもう１本（熱交換器側ヒーター部３ｂ）よりも下方に位置して室外機底板１に接触または近接する形状に成形した凍結防止用のヒーター３を設けるようにしたので、従来技術通り、室外機底板１を起点に発生する氷結を抑制する効果も奏する。   Moreover, according to this Embodiment, in the taper part 1a of the outdoor unit bottom plate 1 from which the distance of the outdoor unit bottom plate 1 and the heat exchanger bottom face 2a becomes large, or the lowest part 1b, or both, these two of which are paralleled One (outdoor unit bottom plate side heater section 3a) is positioned below the other (heat exchanger side heater section 3b), and the antifreezing heater 3 is formed in contact with or close to the outdoor unit bottom plate 1. Therefore, as in the prior art, there is an effect of suppressing icing generated from the outdoor unit bottom plate 1 as a starting point.

なお、室外機底板側ヒーター部３ａおよび熱交換器側ヒーター部３ｂは、テーパ部１ａおよび最下部１ｂの双方にわたって設けることが好ましいが、上記したようにテーパ部１ａまたは最下部１ｂにわたって設ける構成でもよく、さらにテーパ部１ａおよび最下部１ｂの少なくとも一部に設ける構成も可能である。いずれの場合でも程度の差はあれ、同様の効果を奏する。   The outdoor unit bottom plate side heater part 3a and the heat exchanger side heater part 3b are preferably provided over both the taper part 1a and the lowermost part 1b. However, as described above, the structure may be provided over the taper part 1a or the lowermost part 1b. In addition, a configuration in which the taper portion 1a and the lowermost portion 1b are provided at least in part is also possible. In either case, the same effect can be achieved to some extent.

また、テーパ部１ａおよび最下部１ｂの形状は図示例に限定されない。さらにまた、テーパ部１ａおよび最下部１ｂは、より一般に、平底部１ｄよりも低く形成された排水領域に置き換えることが可能である。つまり、室外機底板１の一部に周囲よりも低く形成された排水領域を設け、当該排水領域をまたぐようにして熱交換器２を平底部１ｄ上に設置し、当該排水領域の少なくとも一部では、室外機底板側ヒーター部３ａと熱交換器側ヒーター部３ｂを設けるようにすることで、上記と同様の効果が得られる。排水領域の形状は特に限定されない。   Moreover, the shape of the taper part 1a and the lowest part 1b is not limited to the example of illustration. Furthermore, the tapered portion 1a and the lowermost portion 1b can be replaced with a drainage region formed more generally lower than the flat bottom portion 1d. That is, a drainage area formed lower than the surroundings is provided in a part of the outdoor unit bottom plate 1, the heat exchanger 2 is installed on the flat bottom 1d so as to straddle the drainage area, and at least a part of the drainage area Then, the effect similar to the above is acquired by providing the outdoor unit bottom plate side heater part 3a and the heat exchanger side heater part 3b. The shape of the drainage area is not particularly limited.

また、本実施の形態では、室外機底板側ヒーター部３ａおよび熱交換器側ヒーター部３ｂは、ループ状のヒーター３の一部として実現されているが、これに限らず、例えば二つの独立な線状のヒーターの一部として実現することもできる。   Further, in the present embodiment, the outdoor unit bottom plate side heater unit 3a and the heat exchanger side heater unit 3b are realized as a part of the loop-shaped heater 3, but not limited thereto, for example, two independent units It can also be realized as part of a linear heater.

また、本実施の形態によれば、上記した室外機とこれに接続される室内機（図示せず）とを備えた空気調和機を提供することができる。本実施の形態に係る空気調和機は、上記した室外機を備えることにより、外気温度が低い環境においても信頼性を向上させることができる。   Moreover, according to this Embodiment, the air conditioner provided with the above-mentioned outdoor unit and the indoor unit (not shown) connected to this can be provided. By providing the above-described outdoor unit, the air conditioner according to the present embodiment can improve reliability even in an environment where the outside air temperature is low.

本発明は、空気調和機の室外機として有用である。   The present invention is useful as an outdoor unit of an air conditioner.

１ 室外機底板、１ａ テーパ部、１ｂ 最下部、１ｃ ネジ穴、１ｄ 平底部、１ｅ 縁部、２ 熱交換器、２ａ 熱交換器底面、３ ヒーター、３ａ 室外機底板側ヒーター部、３ｂ 熱交換器側ヒーター部、４ ドレン穴、５ 固定具、５ａ 凹溝、６ 固定ネジ、８ 端子、１０ 配管。   1 outdoor unit bottom plate, 1a taper part, 1b bottom part, 1c screw hole, 1d flat bottom part, 1e edge part, 2 heat exchanger, 2a heat exchanger bottom face, 3 heater, 3a outdoor unit bottom plate side heater part, 3b heat exchange Heater side, 4 Drain hole, 5 Fixing tool, 5a Groove, 6 Fixing screw, 8 Terminal, 10 Piping.

Claims (6)

周囲よりも低く形成された排水領域を一部に有する室外機底板と、
前記排水領域をまたぐようにして前記室外機底板上に設置された熱交換器と、
前記室外機底板と前記熱交換器との間に配置され、互いに並列する線状の第１および第２のヒーター部を有する凍結防止用のヒーターと、
を備え、
前記排水領域の少なくとも一部では、前記第１のヒーター部は室外機底板側に配置され、前記第２のヒーター部は前記第１のヒーター部よりも上方に位置して熱交換機側に配置されることを特徴とする空気調和機の室外機。 An outdoor unit bottom plate partially having a drainage area formed lower than the surroundings;
A heat exchanger installed on the outdoor unit bottom plate so as to straddle the drainage area;
A freezing prevention heater which is arranged between the outdoor unit bottom plate and the heat exchanger and has linear first and second heater portions arranged in parallel with each other;
With
In at least a part of the drainage region, the first heater part is disposed on the outdoor unit bottom plate side, and the second heater part is disposed on the heat exchanger side above the first heater part. An air conditioner outdoor unit characterized by the above. 前記室外機底板は、平底部と、この平底部よりも低く形成された前記排水領域とを有し、
前記排水領域は、前記平底部に対して傾斜したテーパ部と、このテーパ部を介して前記平底部につながると共にドレン穴が設けられた最下部とを有し、
前記熱交換器は、前記テーパ部および前記最下部をまたぐようにして前記平底部上に設置され、
前記テーパ部および前記最下部では、前記第１のヒーター部は室外機底板側に配置され、前記第２のヒーター部は前記第１のヒーター部よりも上方に位置して熱交換機側に配置されることを特徴とする請求項１に記載の空気調和機の室外機。 The outdoor unit bottom plate has a flat bottom portion and the drainage region formed lower than the flat bottom portion,
The drainage region has a tapered portion inclined with respect to the flat bottom portion, and a lowermost portion provided with a drain hole while being connected to the flat bottom portion through the tapered portion,
The heat exchanger is installed on the flat bottom so as to straddle the tapered portion and the lowermost portion,
In the taper part and the lowermost part, the first heater part is disposed on the outdoor unit bottom plate side, and the second heater part is disposed on the heat exchanger side above the first heater part. The outdoor unit for an air conditioner according to claim 1. 前記ヒーターは、線状のものを熱交換器底面の外周形状に沿ってループ状にして構成され、
前記第１および第２のヒーター部は、それぞれ前記ヒーターの一部でありかつ平面視で前記熱交換器の幅方向に対向することを特徴とする請求項２に記載の空気調和機の室外機。 The heater is configured in a loop shape along the outer peripheral shape of the bottom of the heat exchanger, the linear one,
The outdoor unit for an air conditioner according to claim 2, wherein each of the first and second heater units is a part of the heater and faces the width direction of the heat exchanger in plan view. . 前記ヒーターは、前記第１のヒーター部の一部が固定具で前記最下部に固定されることにより、前記室外機底板に固定されていることを特徴とする請求項３に記載の空気調和機の室外機。   4. The air conditioner according to claim 3, wherein the heater is fixed to the outdoor unit bottom plate by fixing a part of the first heater part to the lowermost part with a fixture. 5. Outdoor unit. 前記第１のヒーター部は、前記室外機底板に接触することを特徴とする請求項１から４のいずれか１項に記載の空気調和機の室外機。   The outdoor unit of an air conditioner according to any one of claims 1 to 4, wherein the first heater unit contacts the bottom plate of the outdoor unit. 前記第２のヒーター部は、前記熱交換器底面に接触することを特徴とする請求項１から５のいずれか１項に記載の空気調和機の室外機。   The outdoor unit of an air conditioner according to any one of claims 1 to 5, wherein the second heater unit is in contact with a bottom surface of the heat exchanger.
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