JP2010190513A - Outdoor unit of air conditioner - Google Patents

Outdoor unit of air conditioner Download PDF

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JP2010190513A
JP2010190513A JP2009036693A JP2009036693A JP2010190513A JP 2010190513 A JP2010190513 A JP 2010190513A JP 2009036693 A JP2009036693 A JP 2009036693A JP 2009036693 A JP2009036693 A JP 2009036693A JP 2010190513 A JP2010190513 A JP 2010190513A
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heat
heat sink
plate
electrical component
outdoor unit
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JP5148527B2 (en
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Shigeki Kato
茂基 加藤
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Toshiba Carrier Corp
東芝キヤリア株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an outdoor unit of an air conditioner surely preventing breakage of a heat-generative electric component, a control board and the like caused by surge voltage of induced lightning by insulating an electric component box and a radiator plate from each other. <P>SOLUTION: The inside of an outdoor unit body 1 as a housing is divided into a heat exchange chamber 8A receiving a heat exchanger 10 and a blower 13, and a machine chamber 8B receiving a compressor 15 and piping 5 by a partitioning plate 7, the electric component box H is mounted on a face opposed to the machine chamber, of the partitioning plate with a thermally and electrically insulating structure, the control board 22 electrically connected with an electric component Da for control at its one face and the heat-generative electric component Db at the other face is received in the electric component box, an opening section 37 is formed on the electric component box, and closed by a radiator plate 33, one face of the radiator plate is closely kept into contact with the heat-generative electric component in a heat transferring state, heat sinks 35a, 35b are mounted on the other face of the radiator plate while projecting to a heat exchange chamber side, and a heat sink spacer 30 having the approximate frame-shape and composed of an insulating material, is disposed between a peripheral edge section of the opening section of the electric component box and a peripheral edge section of the radiator plate. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、空気調和機の室外機に係り、特に、制御用電気部品や発熱性電気部品等と電気的に接続した制御基板を収容する電気部品箱の構造改良に関する。   The present invention relates to an outdoor unit of an air conditioner, and more particularly to a structural improvement of an electrical component box that accommodates a control board that is electrically connected to a control electrical component, a heat generating electrical component, or the like.
空気調和機の室外機を構成する筐体である室外機本体は、内部が仕切り板によって左右二室に区分されている。区分された一方の室は、圧縮機と四方切換え弁等の配管類を収容するので機械室と呼ばれ、他方の室は室外熱交換器と室外送風機を収容するので熱交換室と呼ばれている。   The outdoor unit main body, which is a casing constituting the outdoor unit of the air conditioner, is divided into two chambers on the left and right by a partition plate. One of the compartments is called the machine room because it contains the piping such as the compressor and the four-way switching valve, and the other room is called the heat exchange room because it contains the outdoor heat exchanger and the outdoor fan. Yes.
前記圧縮機や四方切換え弁および室外送風機等の電動部品は、制御基板に電気的に接続される電解コンデンサやコネクタ等の制御用電気部品およびスイッチング素子モジュール等の発熱性電気部品によって駆動制御される。   The electric parts such as the compressor, the four-way switching valve, and the outdoor fan are driven and controlled by control electric parts such as electrolytic capacitors and connectors that are electrically connected to the control board, and heat-generating electric parts such as switching element modules. .
たとえば、[特許文献1]には、下面側に制御用電気部品を実装する制御基板を収容した電気部品箱が開示される。発熱性電気部品は電気部品箱に設けられる開口部に取付けられ、さらにこの電気部品にヒートシンクが密着固定される。
[特許文献1]の電気部品箱は、文字通りの箱体の構造となっているので、機械室上部に大きな設置スペースが必要となる。そのため室外機が大型化し、またコストに影響を与えることは避けられない。
For example, [Patent Document 1] discloses an electrical component box containing a control board on which a control electrical component is mounted on the lower surface side. The exothermic electrical component is attached to an opening provided in the electrical component box, and a heat sink is tightly fixed to the electrical component.
Since the electric component box of [Patent Document 1] has a literal box structure, a large installation space is required in the upper part of the machine room. For this reason, it is inevitable that the outdoor unit becomes large and affects the cost.
そこで、近時は、上記仕切り板を電気部品箱の一部とみなし、仕切り板に直接、制御基板を取付け、これをカバー体でカバーして電気部品箱の設置スペースを小型化した、簡易構造の電気部品箱が考え出されるようになった。   Therefore, recently, the above-mentioned partition plate is regarded as a part of the electrical component box, and the control board is directly attached to the partition plate, and this is covered with a cover body to reduce the installation space for the electrical component box. The electrical parts box has come to be conceived.
特開平9−60928号公報Japanese Patent Laid-Open No. 9-60928
この場合の制御基板は、一面に制御マイコン等の制御素子、電解コンデンサ、コネクタ等の制御用電気部品を実装(電気的に接続)する。制御基板の他面には圧縮機の駆動電源に使用されるスイッチング素子モジュールや整流器等の、作用にともなって高熱を放散する発熱性電気部品を電気的に接続する。   In this case, a control board such as a control microcomputer, an electrolytic capacitor, and a control electrical component such as a connector are mounted (electrically connected) on one surface of the control board. On the other side of the control board, exothermic electrical components that dissipate high heat in accordance with the action, such as a switching element module and a rectifier used for driving power of the compressor, are electrically connected.
一方、上記仕切り板に密着して放熱板を取付け、放熱板の一面を発熱性電気部品に直接密着させ、もしくはサブヒートシンクを取付けて発熱性電気部品に密着させる。放熱板の他面にヒートシンクを取付け、このヒートシンクを仕切り板に設けた孔部から熱交換室に突出させ、室外送風機の送風で冷却させることは、[特許文献1]と同一構成になる。   On the other hand, the heat radiating plate is attached in close contact with the partition plate, and one surface of the heat radiating plate is brought into direct contact with the exothermic electrical component, or the sub heat sink is attached to make in close contact with the exothermic electrical component. A heat sink is attached to the other surface of the heat radiating plate, the heat sink is protruded from the hole provided in the partition plate into the heat exchange chamber, and cooled by the air blown by the outdoor blower has the same configuration as [Patent Document 1].
すなわち、仕切り板の機械室側の面が電気部品取付け面部となり、放熱板を密着固定する。制御基板は仕切り板に対して熱的・電気的に絶縁する必要があり、電気部品取付け面部と制御基板とは間隙を存して取付ける。このようにして、簡素化しコスト低減に寄与する電気部品箱が得られる。   That is, the surface on the machine room side of the partition plate is an electric component mounting surface portion, and the heat radiating plate is firmly fixed. The control board needs to be thermally and electrically insulated from the partition plate, and the electrical component mounting surface and the control board are mounted with a gap. In this way, an electric component box that is simplified and contributes to cost reduction is obtained.
ただし、室外機が設置されている箇所の近傍に落雷があると、誘導雷の影響で室外機筐体がサージ電圧を受け、筐体の一部で導電性材料の電気部品箱を構成する仕切り板を介して放熱板が放電作用などにより地絡状態となってしまう。
このときは、放熱板に直接密着し、もしくはサブヒートシンクを介して密着する発熱性電気部品の破損が懸念され、さらに制御基板と制御用電気部品にも影響が及ぶ虞れがある。
However, if there is a lightning strike in the vicinity of the location where the outdoor unit is installed, the outdoor unit housing is subjected to surge voltage due to the effect of induced lightning, and the partition that forms an electrical component box made of conductive material is part of the housing. A heat sink will be in a ground fault state by a discharge effect etc. via a board.
In this case, there is a concern that the heat-generating electrical component that is in direct contact with the heat radiating plate or in close contact with the heat sink may be damaged, and the control board and the control electrical component may be affected.
本発明は上記事情にもとづきなされたものであり、その目的とするところは、電気部品箱と放熱板との確実な絶縁を図り、地絡による発熱性電気部品および制御基板等への影響を確実に防止する空気調和機の室外機を提供しようとするものである。   The present invention has been made on the basis of the above circumstances, and the object of the present invention is to ensure the insulation between the electric component box and the heat radiating plate, and to ensure the influence of the ground fault on the heat-generating electric components and the control board. It is an object of the present invention to provide an outdoor unit for an air conditioner that prevents the above.
上記目的を満足するため本発明は、筐体である室外機本体内部を仕切り板により熱交換器および送風機を収容する熱交換室と圧縮機および配管類を収容する機械室とに区分し、仕切り板の機械室に対向する面に熱的・電気的に絶縁構造をなして電気部品箱を取付け、一面に電解コンデンサ、コネクタ等の制御用電気部品を電気的に接続し、他面にスイッチング素子モジュール等の発熱性電気部品を電気的に接続する制御基板を電気部品箱の内部に収容し、電気部品箱に開口部を設け、この開口部を放熱板で閉塞し、放熱板の一面を発熱性電気部品と伝熱状態で密着し、放熱板の他面にヒートシンクを取付けて送風機の送風作用にともない放熱するよう電気部品箱の開口部から熱交換室側に突出させ、略額縁状をなし絶縁材料からなるヒートシンクスペーサを電気部品箱開口部の周縁部と放熱板の周縁部との間に介在させる。   In order to satisfy the above object, the present invention divides the interior of an outdoor unit body, which is a casing, into a heat exchange chamber that contains a heat exchanger and a blower and a machine room that contains a compressor and piping by a partition plate, An electrical component box is mounted on the surface of the board facing the machine room with a thermal and electrical insulation structure, and electrical components for control such as electrolytic capacitors and connectors are electrically connected on one side, and switching elements on the other side. A control board that electrically connects heat-generating electrical components such as modules is housed inside the electrical component box, an opening is provided in the electrical component box, this opening is closed with a heat sink, and one side of the heat sink is heated. The heat sink is in close contact with the heat conductive electrical component, and a heat sink is attached to the other side of the heat sink, and it projects from the opening of the electrical component box to the heat exchange chamber side to dissipate heat in accordance with the blower action of the blower. Heat sheath made of insulating material Is interposed between the Kusupesa the peripheral portion of the electric parts box opening and the periphery of the heat sink.
本発明によれば、電気部品箱と放熱板との絶縁を図り、地絡による発熱性電気部品および制御基板等の破損を確実に防止して、信頼性の向上を得られる効果を奏する。   According to the present invention, the electrical component box and the heat radiating plate are insulated from each other, and it is possible to reliably prevent the heat-generating electrical component and the control board from being damaged due to the ground fault, thereby improving the reliability.
本発明における一実施の形態に係る、空気調和機の室外機の一部を省略した斜視図。The perspective view which abbreviate | omitted a part of outdoor unit of the air conditioner based on one embodiment in this invention. 同実施の形態に係る、室外機の横断平面図。The cross-sectional top view of the outdoor unit based on the embodiment. 同実施の形態に係る、一部を省略した室外機の平面図。The top view of the outdoor unit which abbreviate | omitted one part based on the embodiment. 同実施の形態に係る、一部を省略した機械室側から見た電気部品箱の斜視図と、角度を変えて見た電気部品箱の斜視図。The perspective view of the electrical component box which looked from the machine room side which abbreviate | omitted the part based on the embodiment, and the electrical component box which looked at changing angles. 同実施の形態に係る、熱交換室側から見た電気部品箱の斜視図。The perspective view of the electrical component box which looked from the heat exchange chamber side based on the embodiment. 同実施の形態に係る、制御基板を取外した電気部品箱の斜視図。The perspective view of the electrical component box which removed the control board based on the embodiment. 同実施の形態に係る、熱交換室側から見た上仕切り板の斜視図。The perspective view of the upper partition plate seen from the heat exchange chamber side based on the embodiment. 同実施の形態に係る、放熱板の斜視図。The perspective view of the heat sink based on the embodiment. 同実施の形態に係る、機械室側から見たヒートシンクスペーサの斜視図と、熱交換室側から見たヒートシンクスペーサの斜視図。The perspective view of the heat sink spacer seen from the machine room side based on the embodiment, and the perspective view of the heat sink spacer seen from the heat exchange chamber side. 同実施の形態に係る、熱交換室側から見た電気部品箱の正面図。The front view of the electric component box based on the same embodiment seen from the heat exchange chamber side. 同実施の形態に係る、図10のZ−Z線に沿う電気部品箱の横断平面図。The cross-sectional top view of the electrical component box which follows the ZZ line | wire of FIG. 10 based on the embodiment. 同実施の形態に係る、図10のY−Y線に沿う電気部品箱の縦断面図と、電気部品箱の一部を拡大した縦断面図。The longitudinal cross-sectional view of the electrical component box which follows the YY line | wire of FIG. 10 based on the embodiment, and the longitudinal cross-sectional view which expanded a part of electrical component box.
以下、本発明の実施の形態を、図面にもとづいて説明する。
図1は空気調和機の室外機の一部を省略した斜視図、図2は室外機の横断平面図、図3は室外機の一部を省略した平面図である。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view in which a part of the outdoor unit of the air conditioner is omitted, FIG. 2 is a cross-sectional plan view of the outdoor unit, and FIG. 3 is a plan view in which a part of the outdoor unit is omitted.
筐体からなる室外機本体1は、いずれも板金製である、横長矩形状の底板1a、底板1aの前面側に立設される前板1b、底板1aの左側部に立設される左側板1c、右側部に立設される右側板1d、背面側に立設される後板1eおよび、これら前、左右、後板1b,1c,1d,1eの上端に亘って設けられる天板1fとから構成される。   The outdoor unit main body 1 made of a casing is made of sheet metal, and is a horizontally long bottom plate 1a, a front plate 1b standing on the front side of the bottom plate 1a, and a left plate standing on the left side of the bottom plate 1a. 1c, a right side plate 1d erected on the right side, a rear plate 1e erected on the back side, and a top plate 1f provided across the upper ends of the front, left and right, rear plates 1b, 1c, 1d, 1e, Consists of
前板1bの一側部に片寄った位置に、ベルマウス2が形成される吹出口3が設けられ、この吹出し口3にファンガードが嵌め込まれる。左側板1cには複数の補強用段部が形成され、右側板1dは配管類5を挿通させるための開口部を備えていて、この開口部はパックドバルブカバー6によって覆われている。   An air outlet 3 in which a bell mouth 2 is formed is provided at a position offset from one side of the front plate 1b, and a fan guard is fitted into the air outlet 3. The left side plate 1 c is formed with a plurality of reinforcing steps, and the right side plate 1 d is provided with an opening through which the piping 5 is inserted, and this opening is covered with a packed valve cover 6.
左側板1cと後板1eには桟部が設けられ、これら桟部相互間は吸込み口を構成する開口部となっている。天板1fは、周縁に沿って折曲げ加工された片部を有する平板からなる。このようにして構成される室外機本体1内部は、板金製の仕切り板7によって左右二室に区分される。   The left side plate 1c and the rear plate 1e are provided with crosspieces, and between these crosspieces is an opening that forms a suction port. The top plate 1f is a flat plate having a piece that is bent along the periphery. The interior of the outdoor unit main body 1 configured in this way is divided into two left and right chambers by a partition plate 7 made of sheet metal.
仕切り板7については後述するが、この仕切り板7から左側板1c側の空間室を熱交換室8Aと呼び、仕切り板7から右側板1d側の空間室を機械室8Bと呼ぶ。仕切り板7の取付け位置と形態から、熱交換室8Aは室外機本体1内部全体の略3/4程度の容積であり、機械室8Bは残りの略1/4程度の容積をなす。   Although the partition plate 7 will be described later, a space chamber on the left side plate 1c side from the partition plate 7 is referred to as a heat exchange chamber 8A, and a space chamber on the right plate 1d side from the partition plate 7 is referred to as a machine room 8B. From the mounting position and form of the partition plate 7, the heat exchange chamber 8A has a volume of about 3/4 of the entire interior of the outdoor unit body 1, and the machine room 8B has a remaining volume of about 1/4.
前記熱交換室8Aにおいて、後板1eに近接する位置の底板1a上に、後板1eと並行して室外熱交換器10が配置される。室外熱交換器10は平面視で直状に形成され、一側端は前板1bと左側板1cとの折曲隅部近傍にあり、他側端は右側板1dと後板1eとの折曲隅部近傍にある。室外熱交換器10の上端は天板1fと極く近接している。   In the heat exchange chamber 8A, the outdoor heat exchanger 10 is disposed on the bottom plate 1a at a position close to the rear plate 1e in parallel with the rear plate 1e. The outdoor heat exchanger 10 is formed in a straight shape in a plan view, one end is near the bent corner between the front plate 1b and the left plate 1c, and the other end is a fold between the right plate 1d and the rear plate 1e. Near the corner. The upper end of the outdoor heat exchanger 10 is very close to the top plate 1f.
さらに、熱交換室8Aには室外送風機13を支持する送風機支持部材12が設けられている。室外送風機13は、室外熱交換器10と仕切り板7と左側板1cおよび前板1bとに囲まれて配置され、ファンモータ13Mと、このファンモータ13Mの回転軸に取付けられるプロペラファン13Fとから構成される。   Further, a fan support member 12 that supports the outdoor fan 13 is provided in the heat exchange chamber 8A. The outdoor blower 13 is disposed surrounded by the outdoor heat exchanger 10, the partition plate 7, the left side plate 1c, and the front plate 1b, and includes a fan motor 13M and a propeller fan 13F attached to a rotation shaft of the fan motor 13M. Composed.
ファンモータ13Mは回転速度を可変としており、プロペラファン13Fは軸方向の背面側から熱交換空気を吸込んで前面側へ吹出す送風作用をなす。すなわち、開口構造の後板1eが外気の吸込み側となり、前板1bと吹出し口3が吹出し側となる。前記ベルマウス2は、吹出し口3において外気吹出しの案内をなす。   The fan motor 13M has a variable rotation speed, and the propeller fan 13F sucks heat exchange air from the rear side in the axial direction and blows it out to the front side. That is, the rear plate 1e of the opening structure is the outside air suction side, and the front plate 1b and the outlet 3 are the outlet side. The bell mouth 2 guides the outside air at the outlet 3.
機械室8Bには、圧縮機15と気液分離器16が配置され、これら圧縮機15と気液分離器16に接続される四方切換え弁等を備えた前記配管類5が収容される。圧縮機15等は、熱交換室8A内の室外熱交換器10や、室内機に収容される室内熱交換器などと、冷媒管を介して冷凍サイクルを構成するよう接続される。   In the machine room 8B, the compressor 15 and the gas-liquid separator 16 are disposed, and the piping 5 including a four-way switching valve connected to the compressor 15 and the gas-liquid separator 16 is accommodated. The compressor 15 and the like are connected to the outdoor heat exchanger 10 in the heat exchange chamber 8A, the indoor heat exchanger accommodated in the indoor unit, and the like so as to constitute a refrigeration cycle via a refrigerant pipe.
さらに、前記仕切り板7について詳述する。
前記仕切り板7は、底板1aに取付け固定される下端から上方部位へ全高の略2/3程度の位置を境にして、上下に分割されている。仕切り板7の上分割部分を「上仕切り板7A」と呼び、下分割部分を「下仕切り板7B」と呼ぶ。
Further, the partition plate 7 will be described in detail.
The partition plate 7 is divided vertically from the lower end attached and fixed to the bottom plate 1a to the upper part at the position of about 2/3 of the total height. The upper divided portion of the partition plate 7 is called “upper partition plate 7A”, and the lower divided portion is called “lower partition plate 7B”.
図2で示すように、上仕切り板7Aは前板1bに取付けられる部位から右側板1dと後板1eとの折曲隅部に向って多段に折曲される。これに対して下仕切り板7Bは、上仕切り板7Aの下端位置から熱交換室8A側へ平面視で略三角状に突出する。当然、下仕切り板7Bの上端開口は三角蓋によって閉成されることになる。   As shown in FIG. 2, the upper partition plate 7A is bent in multiple stages from the portion attached to the front plate 1b toward the bent corners of the right side plate 1d and the rear plate 1e. On the other hand, the lower partition plate 7B protrudes from the lower end position of the upper partition plate 7A to the heat exchange chamber 8A side in a substantially triangular shape in plan view. Naturally, the upper end opening of the lower partition plate 7B is closed by a triangular lid.
上仕切り板7Aは、伝熱性に優れた素材である、たとえばアルミニゥム材が選択されていて、平板から形成される。特に、図1に示すように、上仕切り板7Aの機械室8B側の面を、「電気部品取付け面部S」と呼ぶ。一方、下仕切り板7Bは、剛性が大であるとともに遮音性に優れた素材である、たとえば薄肉厚の鉄板が用いられる。   The upper partition plate 7A is made of a flat plate, for example, an aluminum material, which is a material having excellent heat conductivity, is selected. In particular, as shown in FIG. 1, the surface of the upper partition plate 7 </ b> A on the machine room 8 </ b> B side is referred to as “electric component mounting surface portion S”. On the other hand, the lower partition plate 7B is made of a material having high rigidity and excellent sound insulation, for example, a thin-walled iron plate.
上仕切り板7Aに形成される前記電気部品取付け面部Sには、上基板カバー18Aと下基板カバー18Bとから構成される基板カバー18と、この基板カバー18の側部にリアクタ20が並んで取付けられる。   A substrate cover 18 composed of an upper substrate cover 18A and a lower substrate cover 18B is mounted on the electrical component mounting surface S formed on the upper partition plate 7A, and a reactor 20 is mounted side by side on the side of the substrate cover 18. It is done.
基板カバー18は、電気部品取付け面部Sの前端側から後端側に亘ってほとんど大部分を占めて取付けられ、わずかに電気部品取付け面部Sの後端部が露出する。この電気部品取付け面部Sの露出した後端部に、作用にともなって高熱を発する発熱性電気部品である前記リアクタ20が取付けられる。   The board cover 18 is mounted so as to occupy most of the electric component mounting surface portion S from the front end side to the rear end side, and the rear end portion of the electric component mounting surface portion S is slightly exposed. The reactor 20, which is a heat-generating electrical component that generates high heat in accordance with the action, is attached to the exposed rear end portion of the electrical component attachment surface portion S.
下仕切り板7Bと対向する底板1a上に、先に説明した圧縮機15と気液分離器16および四方切換え弁等を備えた前記配管類5が配置される。特に、機械室8Bから熱交換室8A側へ突出する三角状のスペースには気液分離器16が収容される。   On the bottom plate 1a facing the lower partition plate 7B, the piping 5 including the compressor 15, the gas-liquid separator 16 and the four-way switching valve described above is disposed. In particular, the gas-liquid separator 16 is accommodated in a triangular space protruding from the machine room 8B toward the heat exchange chamber 8A.
図4(A)は機械室8B側から見た電気部品箱Hの斜視図、図4(B)は角度を変えて見た電気部品箱Hの斜視図であり、いずれも一部を省略して示している。図5は熱交換室8A側から見た電気部品箱Hの斜視図である。   4A is a perspective view of the electrical component box H viewed from the machine room 8B side, and FIG. 4B is a perspective view of the electrical component box H viewed from a different angle. It shows. FIG. 5 is a perspective view of the electrical component box H as seen from the heat exchange chamber 8A side.
図4(A)(B)に示すように、基板カバー18は上仕切り板7Aに取付けられた制御基板22をカバーするように取付けられる。上仕切り板7Aと基板カバー18との組立て体は、互いに箱体(エンクロージャー)構造をなし、剛性が大に保持される。したがって、上仕切り板7Aと基板カバー18とで電気部品箱Hが構成されることとなる。   As shown in FIGS. 4A and 4B, the substrate cover 18 is attached so as to cover the control substrate 22 attached to the upper partition plate 7A. The assembly of the upper partition plate 7A and the substrate cover 18 forms a box (enclosure) structure with each other, and the rigidity is kept large. Therefore, the electrical component box H is constituted by the upper partition plate 7 </ b> A and the substrate cover 18.
このように上仕切り板7Aを、電気部品箱Hを構成する部品と兼用したので、部品費の低減化を得られる。当然ながら、予め箱体(電気部品箱)を構成して、これを上仕切り板7Aの機械室8Bに対向する面に取付けるようにしても良い。   Thus, since the upper partition plate 7A is also used as a component constituting the electrical component box H, a reduction in component cost can be obtained. Of course, a box (electrical component box) may be configured in advance and attached to the surface of the upper partition plate 7A facing the machine room 8B.
制御基板22は矩形状をなし、上部の左右隅部を取付けねじnによって上仕切り板7Aとは所定の間隙を存して取付けられる。制御基板22の下部は、後述するようにスイッチング素子モジュールの端子や、整流器(レクチ)の端子に支持され、かつ電気的に接続される。   The control board 22 has a rectangular shape, and the upper left and right corners are attached to the upper partition plate 7A with attachment screws n with a predetermined gap. The lower part of the control board 22 is supported by and electrically connected to a terminal of the switching element module and a terminal of a rectifier (rectifier) as will be described later.
制御基板22の手前側一面には、制御プログラムを格納するメモリ等の制御回路が形成され、制御用電気部品Daが実装される。制御用電気部品Daとして、複数の電解コンデンサ24やコネクタ類25等があり、制御基板22と電気的に接続される。
特に、図4(B)に示すように、制御基板22の下端で右側部から、後述する放熱板33に取付けられるサブヒートシンク36の端部が突出して見える。
A control circuit such as a memory for storing a control program is formed on the front surface of the control board 22 and a control electrical component Da is mounted thereon. As the control electrical component Da, there are a plurality of electrolytic capacitors 24, connectors 25, and the like, which are electrically connected to the control board 22.
In particular, as shown in FIG. 4B, the end of the sub heat sink 36 attached to the heat radiating plate 33 described later appears to protrude from the right side at the lower end of the control board 22.
図5では、上仕切り板7Aの上端部に、基板カバー18を構成する上基板カバー18Aの一部が見えている。上基板カバー18Aは下基板カバー18Bとともに板金材からなり、この下端開口部が下基板カバー18Bの上端開口部に嵌り込む。これら上下基板カバー18B,18Bは上仕切り板7Aに対して着脱自在に取付けられている。   In FIG. 5, a part of the upper substrate cover 18 </ b> A constituting the substrate cover 18 can be seen at the upper end portion of the upper partition plate 7 </ b> A. The upper substrate cover 18A is made of a sheet metal material together with the lower substrate cover 18B, and the lower end opening is fitted into the upper end opening of the lower substrate cover 18B. These upper and lower substrate covers 18B, 18B are detachably attached to the upper partition plate 7A.
ヒートシンクスペーサ30が、図4(B)では上辺一部と左右両辺部および下辺部が見え、図5では下辺部を除く辺部が見えている。このヒートシンクスペーサ30は額縁状をなしていて、ヒートシンクスペーサ30で囲まれる部分が上記した放熱板33である。   In FIG. 4B, the heat sink spacer 30 can see a part of the upper side, the left and right sides, and the lower side, and in FIG. 5, the side excluding the lower side can be seen. The heat sink spacer 30 has a frame shape, and the portion surrounded by the heat sink spacer 30 is the heat sink 33 described above.
上記サブヒートシンク36は、放熱板30の機械室8B側の面に取付けねじを介して取付け固定される。放熱板30の熱交換室8A側の面に2個のヒートシンク35a,35bが、上下二段で、左右に位置をずらせて取付けられる。これらヒートシンク35a,35bは、図の手前側である熱交換室8A側に突している。   The sub heat sink 36 is attached and fixed to the surface of the heat radiating plate 30 on the machine room 8B side via an attaching screw. Two heat sinks 35a and 35b are attached to the surface of the heat radiating plate 30 on the side of the heat exchange chamber 8A so as to be shifted in the left and right directions in two steps. These heat sinks 35a and 35b protrude toward the heat exchange chamber 8A, which is the front side of the figure.
図6は図4(B)から制御基板22を取外した状態の電気部品箱Hの斜視図、図7は熱交換室8A側から見た上仕切り板7Aの斜視図、図8は熱交換室8A側から見た放熱板33の斜視図である。   6 is a perspective view of the electric component box H with the control board 22 removed from FIG. 4B, FIG. 7 is a perspective view of the upper partition plate 7A viewed from the heat exchange chamber 8A side, and FIG. 8 is the heat exchange chamber. It is a perspective view of the heat sink 33 seen from 8A side.
図6に示すように、図4(B)から制御基板22を取外しすると、上仕切り板7Aに取付けられるヒートシンクスペーサ30および放熱板33の内面側が見える。放熱板33の機械室8B側の面に、放熱板33の一側端から他側端に亘って横断し、かつ放熱板33の板面に密着して、上記サブヒートシンク36が取付けられる。   As shown in FIG. 6, when the control board 22 is removed from FIG. 4B, the heat sink spacer 30 attached to the upper partition plate 7A and the inner surface side of the heat radiating plate 33 can be seen. The sub heat sink 36 is attached to the surface of the heat radiating plate 33 on the machine room 8B side so as to traverse from one end of the heat radiating plate 33 to the other end and in close contact with the plate surface of the heat radiating plate 33.
サブヒートシンク36は伝熱性のよい、たとえばアルミニュム材からなり、上部水平片部と下部水平片部が並行で、中間部が斜め状に屈曲形成される板片である。上部水平片部と放熱板33を介した対向部位に上部側のヒートシンク35aが取付けられ、下部水平片部と放熱板33を介した対向部位に下部側のヒートシンク35bが取付けられる。   The sub heat sink 36 is a plate piece made of, for example, an aluminum material having good heat conductivity, wherein the upper horizontal piece portion and the lower horizontal piece portion are parallel and the middle portion is bent obliquely. An upper heat sink 35a is attached to the opposite portion via the upper horizontal piece and the heat sink 33, and a lower heat sink 35b is attached to the opposite portion via the lower horizontal piece and the heat sink 33.
図7に示すように、電気部品箱Hを構成する上仕切り板7Aの右隅部である下基板カバー18Bに囲まれる部位に開口部37が設けられる。開口部37の周縁に沿って上記ヒートシンクスペーサ30が取付けられ、さらにヒートシンクスペーサ30に取付けられる放熱板33によって上記開口部37が閉塞されることになる。   As shown in FIG. 7, an opening 37 is provided at a portion surrounded by the lower substrate cover 18 </ b> B that is the right corner of the upper partition plate 7 </ b> A constituting the electrical component box H. The heat sink spacer 30 is attached along the periphery of the opening 37, and the opening 37 is blocked by the heat radiating plate 33 attached to the heat sink spacer 30.
開口部37の上方部位で、上仕切り板7Aの上端部には、2個の取付け用孔bが設けられる。これら取付け用孔bには、制御基板22を上仕切り板7Aの取付け固定するための取付けねじnが螺挿するようになっている。   Two mounting holes b are provided in the upper part of the upper partition plate 7A above the opening 37. In these mounting holes b, mounting screws n for mounting and fixing the control board 22 to the upper partition plate 7A are screwed.
図8に示すように、放熱板33は伝熱性のよい,たとえばアルミニゥム材からなり、熱交換室8A側の面に先に説明した2個のヒートシンク35a、35bが、互いに上下方向と左右方向に位置をずらせ取付けねじnを介してに取付けられる。機械室8B側の面には、先に説明したサブヒートシンク36が取付けられる。   As shown in FIG. 8, the heat radiating plate 33 is made of, for example, an aluminum material having good heat conductivity, and the two heat sinks 35a and 35b described above are arranged in the vertical direction and the horizontal direction on the surface on the heat exchange chamber 8A side. The position is shifted and attached via a mounting screw n. The sub heat sink 36 described above is attached to the surface on the machine room 8B side.
放熱板33の上端で左右両側部には、放熱板33をヒートシンクスペーサ30に取付ける取付けねじが挿通するための取付け用孔bが設けられる。放熱板33の下端部は、垂直面から一旦水平方向に折曲され、さらに水平端部から垂直方向に折曲されている。この放熱板33の折曲形成された下端部を、特に「水切り部33a」と呼ぶ。   Mounting holes b through which mounting screws for mounting the heat radiating plate 33 to the heat sink spacer 30 are inserted in the left and right side portions at the upper end of the heat radiating plate 33. The lower end portion of the heat radiating plate 33 is once bent in the horizontal direction from the vertical surface, and further bent in the vertical direction from the horizontal end portion. The bent lower end portion of the heat radiating plate 33 is particularly referred to as a “draining portion 33a”.
図9(A)は機械室8B側から見たヒートシンクスペーサ30の斜視図、図9(B)は熱交換室8A側から見たヒートシンクスペーサ30の斜視図である。
ヒートシンクスペーサ30は絶縁材料から構成されていて、ここでは、たとえば樹脂材料が選択されている。ヒートシンクスペーサ30は矩形状の開口を囲撓する枠体であって、なお説明すると上述したように略額縁状をなし、以下に述べる部分的な突出部を一体に備えている。
FIG. 9A is a perspective view of the heat sink spacer 30 viewed from the machine chamber 8B side, and FIG. 9B is a perspective view of the heat sink spacer 30 viewed from the heat exchange chamber 8A side.
The heat sink spacer 30 is made of an insulating material. Here, for example, a resin material is selected. The heat sink spacer 30 is a frame that surrounds the rectangular opening, and as described above, has a substantially frame shape as described above, and is integrally provided with partial protrusions described below.
すなわち、ヒートシンクスペーサ30の上端で、かつ左右両側部は上方に半円状に突出する突出部30aを備えていて、取付け用孔cが設けられる。これら取付け用孔cは、ヒートシンクスペーサ30を上仕切り板7Aに取付けるための取付けねじが挿通するためのものである。   In other words, the upper end of the heat sink spacer 30 and both left and right side portions are provided with protruding portions 30a protruding upward in a semicircular shape, and mounting holes c are provided. These attachment holes c are for insertion of attachment screws for attaching the heat sink spacer 30 to the upper partition plate 7A.
ヒートシンクスペーサ30の上辺および左右両側辺で、熱交換室8A側の端部にのみ、開口側に突出する保護リブ30bが設けられる。ヒートシンクスペーサ30の機械室8B側の面において、左右幅寸法は放熱板33の左右幅寸法と同一であり、上下方向寸法は放熱板33の上端から下端水切り部33aの水平片部下面までの寸法と同一に設計される。   Protective ribs 30b projecting toward the opening side are provided only at the end portion on the heat exchange chamber 8A side on the upper side and the left and right side sides of the heat sink spacer 30. On the surface of the heat sink spacer 30 on the machine room 8B side, the left-right width dimension is the same as the left-right width dimension of the heat radiating plate 33, and the vertical dimension is the dimension from the upper end of the heat radiating plate 33 to the lower surface of the horizontal piece portion of the lower end draining portion 33a. Designed identically.
したがって、放熱板33を機械室8B側からヒートシンクスペーサ30の枠内に挿入可能であるが、熱交換室8A側から挿入しようとしても保護リブ30bが枠内へ突出しているために挿入はできない。機械室8B側から放熱板33を挿入すれば、放熱板33の上端と左右両側端は保護リブ30bに支持されることになる。   Therefore, the heat radiating plate 33 can be inserted into the frame of the heat sink spacer 30 from the machine room 8B side, but cannot be inserted because the protective rib 30b protrudes into the frame even if it is inserted from the heat exchange chamber 8A side. If the heat radiating plate 33 is inserted from the machine room 8B side, the upper end and the left and right side ends of the heat radiating plate 33 are supported by the protective rib 30b.
保護リブ30bにおける上辺部と左右両側辺部とが交差する部位に、取付け用ボス30cが熱交換室8A側へ突設される。保護リブ30bの機械室8B側の面から各取付け用ボス30cに対してねじ孔dが設けられている。それぞれのねじ孔dは取付け用ボス30cを貫通せず、袋孔状のねじ孔となっている。   A mounting boss 30c protrudes toward the heat exchange chamber 8A at a portion where the upper side of the protective rib 30b intersects the left and right sides. A screw hole d is provided to each mounting boss 30c from the surface of the protective rib 30b on the machine chamber 8B side. Each screw hole d does not penetrate the mounting boss 30c, and is a bag hole-like screw hole.
ヒートシンクスペーサ30の下辺に沿う機械室8B側の面には、立ち壁30dが設けられる。さらに、立ち壁30dの内面である熱交換室8A側の面に、所定の間隔を存して複数の受けリブ30eが設けられる。これら受けリブ30eの上端面は断面が山形状に突出する。   A standing wall 30 d is provided on the surface on the machine room 8 </ b> B side along the lower side of the heat sink spacer 30. Furthermore, a plurality of receiving ribs 30e are provided on the surface on the heat exchange chamber 8A side, which is the inner surface of the standing wall 30d, with a predetermined interval. The upper end surfaces of these receiving ribs 30e protrude in a mountain shape.
ヒートシンクスペーサ30の下辺部に沿う下端面で、かつ機械室8B側の面と、熱交換室8A側の面とに、複数の嵌め込み用リブ30fが設けられる。機械室8B側の嵌め込み用リブ30fは幅方向に長く、熱交換室8A側の嵌め込み用リブ30fは幅方向に短く、互いのリブ30fは上仕切り板7Aの板厚分だけ離間している。   A plurality of fitting ribs 30f are provided on the lower end surface along the lower side of the heat sink spacer 30, on the surface on the machine room 8B side, and on the surface on the heat exchange chamber 8A side. The fitting rib 30f on the machine chamber 8B side is long in the width direction, the fitting rib 30f on the heat exchange chamber 8A side is short in the width direction, and the ribs 30f are separated from each other by the thickness of the upper partition plate 7A.
立ち壁30dの幅方向略中央部には、カバー取付け用ボス30gが機械室8B側に突設される。このカバー取付け用ボス30gの先端から、ボス30gを貫通せず袋状のねじ孔fが設けられる。立ち壁30dの左右両側には、下基板カバー18Bの内面に当接して間隔を保持するスペーサ用の突部30hが機械室8B側に突設される。   A cover mounting boss 30g protrudes from the machine chamber 8B side at a substantially central portion in the width direction of the standing wall 30d. From the tip of the cover mounting boss 30g, a bag-like screw hole f is provided without penetrating the boss 30g. On both the left and right sides of the standing wall 30d, spacer protrusions 30h that abut against the inner surface of the lower substrate cover 18B and maintain a space project from the machine chamber 8B side.
図10は熱交換室側から見た電気部品箱の正面図であり、図11は図10のZ−Z線に沿う電気部品箱の横断平面図であり、図12(A)は図10のY−Y線に沿う電気部品箱の縦断面図であり、図12(B)は電気部品箱Hの一部を拡大した縦断面図である。   10 is a front view of the electric component box as seen from the heat exchange chamber side, FIG. 11 is a cross-sectional plan view of the electric component box along the line ZZ in FIG. 10, and FIG. FIG. 12B is a longitudinal sectional view of the electrical component box along the line YY, and FIG.
上仕切り板7Aに設けられる開口部37に、略額縁状のヒートシンクスペーサ30が嵌め込まれ、このヒートシンクスペーサ30に取付けられる放熱板33が上記開口部37を閉塞する。   A substantially frame-shaped heat sink spacer 30 is fitted into the opening 37 provided in the upper partition plate 7 </ b> A, and the heat radiating plate 33 attached to the heat sink spacer 30 closes the opening 37.
なお説明すると、ヒートシンクスペーサ30上端の突出部30aが、取付けねじnを介して上仕切り板7Aに取付けられる。ヒートシンクスペーサ30の下端部に設けられる嵌め込み用リブ30fが上仕切り板7A(電気部品箱H)の開口部37周縁部に嵌め込まれる。したがって、ヒートシンクスペーサ30は上仕切り板7Aに取付け固定される。   If it demonstrates, the protrusion part 30a of the heat sink spacer 30 upper end will be attached to the upper partition plate 7A via the attachment screw n. A fitting rib 30f provided at the lower end of the heat sink spacer 30 is fitted into the periphery of the opening 37 of the upper partition plate 7A (electrical component box H). Therefore, the heat sink spacer 30 is attached and fixed to the upper partition plate 7A.
放熱板33は機械室8B側からヒートシンクスペーサ30に嵌め込まれ、取付けねじnを介してヒートシンクスペーサ30に取付け固定される。この状態で、放熱板33の上辺部と左右両辺部が保護リブ30bによって支持され、下辺に形成される水切り部33aがヒートシンクスペーサ30を乗り越えて熱交換室8A側へ突出している。   The heat radiating plate 33 is fitted into the heat sink spacer 30 from the machine room 8B side, and is fixedly attached to the heat sink spacer 30 via a mounting screw n. In this state, the upper side and the left and right sides of the heat radiating plate 33 are supported by the protection ribs 30b, and the draining part 33a formed on the lower side passes over the heat sink spacer 30 and protrudes toward the heat exchange chamber 8A.
放熱板33の機械室8B側の面にサブヒートシンク36が取付け固定され、制御基板22の熱交換室8A側の面に電気的に接続されるスイッチング素子モジュール等の発熱性電気部品Dbが密接状態にある。放熱板33の熱交換室8A側の面に2個のヒートシンク35a,35bが取付けられ、熱交換室8A側に突出している。   The heat sink 36 is attached and fixed to the surface of the heat radiating plate 33 on the machine chamber 8B side, and the exothermic electrical component Db such as a switching element module that is electrically connected to the surface of the control board 22 on the heat exchange chamber 8A side is in close contact. It is in. Two heat sinks 35a and 35b are attached to the surface of the heat radiating plate 33 on the side of the heat exchange chamber 8A, and protrude to the side of the heat exchange chamber 8A.
制御基板22の機械室8B側の面には制御マイコン等の制御素子、電解コンデンサ24、コネクタ25等の制御用電気部品Daが実装(電気的に接続)される。制御基板22は制御用電気部品Daごと、上仕切り板7Aに取付け固定される基板カバー18によってカバーされ、保護される。   On the surface of the control board 22 on the machine room 8B side, a control element such as a control microcomputer, an electric capacitor Da for control such as an electrolytic capacitor 24, and a connector 25 are mounted (electrically connected). The control board 22 is covered and protected by the board cover 18 attached and fixed to the upper partition plate 7A together with the control electric component Da.
整流器等の発熱性電気部品Db1は制御基板22から離れて、サブヒートシンク36に直接、取付けねじnを介して取付け固定される。すなわち、上記発熱性電気部品Db1は基板カバー18によってカバーされるが制御基板22に実装されておらず、この端子部が制御基板22と電気的に接続される。   The exothermic electrical component Db1 such as a rectifier is separated from the control board 22 and is directly fixed to the sub heat sink 36 via the mounting screw n. That is, the exothermic electrical component Db1 is covered by the board cover 18 but not mounted on the control board 22, and this terminal portion is electrically connected to the control board 22.
制御基板22は、上端部が取付けねじnで上仕切り板7Aと間隙を存して取付け固定され、下端部は発熱性電気部品Db,Db1の端子部に支持される。予め、制御基板22は発熱性電気部品Db,Db1と、サブヒートシンク36および放熱板33と一体に組立てられ、この組立て体が上仕切り板7Aに取付けられるようになっている。   The upper end of the control board 22 is attached and fixed with a mounting screw n with a gap with the upper partition plate 7A, and the lower end is supported by the terminal portions of the heat generating electrical components Db and Db1. The control board 22 is assembled in advance with the heat generating electrical components Db and Db1, the sub heat sink 36 and the heat radiating plate 33, and this assembly is attached to the upper partition plate 7A.
このようにして構成される空気調和機の室外機において、空調運転(冷房運転)開始の信号を入力すると、圧縮機15が駆動制御されて冷凍サイクル運転が行われる。同時に室外送風機13が駆動され、外気が左側板1cと後板1eに形成される吸込み口を介して室外機本体1内に吸込まれ、室外熱交換器10に流通する。   When an air conditioner operation (cooling operation) start signal is input to the outdoor unit of the air conditioner configured as described above, the compressor 15 is driven and controlled to perform the refrigeration cycle operation. At the same time, the outdoor blower 13 is driven, and the outside air is sucked into the outdoor unit main body 1 through a suction port formed in the left side plate 1 c and the rear plate 1 e and flows to the outdoor heat exchanger 10.
室外熱交換器10には、圧縮機15で圧縮された冷媒が四方切換え弁を介して導通していて、冷媒と外気とが熱交換する。そのあと冷媒は室内機へ導かれて室内空気と熱交換し、室内を空調する。前記室外熱交換器10と熱交換した外気はベルマウス2に案内され、吹出し口3からファンガードを介して外部へ吹出される。   In the outdoor heat exchanger 10, the refrigerant compressed by the compressor 15 is conducted through the four-way switching valve, and the refrigerant and the outside air exchange heat. After that, the refrigerant is guided to the indoor unit and exchanges heat with the indoor air to air-condition the room. The outside air heat-exchanged with the outdoor heat exchanger 10 is guided to the bell mouth 2 and blown out from the blow-out port 3 through the fan guard.
たとえば、室外機Sが設置されている箇所の近傍に落雷があり、誘導雷により室外機本体1がサージ電圧の影響を受け、筐体である室外機本体1と連結している仕切り板7が地絡状態になる場合が考えられる。
しかしながら、仕切り板7と放熱板33との間に絶縁材料(樹脂材料)で成形されるヒートシンクスペーサ30が介在しているので、放熱板33側へのサージ電圧を遮断してサージ電圧の影響を受けることを防止できる。
For example, there is a lightning strike in the vicinity of the place where the outdoor unit S is installed, the outdoor unit main body 1 is affected by surge voltage due to induced lightning, and the partition plate 7 connected to the outdoor unit main body 1 that is a housing is provided. There may be a case where a ground fault occurs.
However, since the heat sink spacer 30 formed of an insulating material (resin material) is interposed between the partition plate 7 and the heat radiating plate 33, the surge voltage to the heat radiating plate 33 side is cut off and the influence of the surge voltage is affected. You can prevent it.
放熱板33一面に取付けられるヒートシンク35a,35bは勿論のこと、他面に取付けられるサブヒートシンク36もサージ電圧の影響を受けることを防止できる。したがって、サブヒートシンク36に密着状態にあるスイッチング素子モジュール等の発熱性電気部品Dbおよび整流器等の発熱性電気部品Db1においても影響が無い。   The heat sink 35a, 35b attached to one surface of the heat radiating plate 33 as well as the sub heat sink 36 attached to the other surface can be prevented from being affected by the surge voltage. Therefore, there is no influence on the heat generating electrical component Db such as the switching element module and the heat generating electrical component Db1 such as the rectifier in close contact with the sub heat sink 36.
そして、これら発熱性電気部品Db,Db1と離間して接続される制御基板22も同様に影響が無い。制御基板22の上端部は、2本の取付けねじnを介して上仕切り板7Aに対して浮いた状態で取付けられているので、ここでも影響が無い。制御基板22に実装される制御用電気部品Daも同様である。   The control board 22 connected to be separated from the heat-generating electrical components Db and Db1 is similarly unaffected. Since the upper end portion of the control board 22 is attached to the upper partition plate 7A via the two attachment screws n, there is no influence here. The same applies to the control electrical component Da mounted on the control board 22.
電気部品箱H内に収容される制御基板22の制御用電気部品Daと、スイッチング素子モジュール等の発熱性電気部品Dbと、リアクタ20および整流器等の発熱性電気部品Db1は、圧縮機15や室外送風機13を駆動し制御する。そして、発熱性電気部品Db、20、Db1は作用にともなって高熱を放散する。   The control electrical component Da of the control board 22 accommodated in the electrical component box H, the exothermic electrical component Db such as the switching element module, and the exothermic electrical component Db1 such as the reactor 20 and the rectifier are the compressor 15 and the outdoor unit. The blower 13 is driven and controlled. And exothermic electric components Db, 20, and Db1 dissipate high heat with an action.
特に、リアクタ20は上仕切り板7Aに直接取付けられているので,上仕切り板7Aに高熱が伝熱されるが、室外送風機13の作用により熱交換室8Aに取込まれた外気の一部は上仕切り板7Aに沿って導かれ冷却されるので、熱的影響が無い。リアクタ20から機械室8Bへ放散される高熱は、機械室8Bに導かれる外気とともに外部へ排出される。   In particular, since the reactor 20 is directly attached to the upper partition plate 7A, high heat is transferred to the upper partition plate 7A, but a part of the outside air taken into the heat exchange chamber 8A by the action of the outdoor blower 13 is upper. Since it is guided and cooled along the partition plate 7A, there is no thermal influence. The high heat dissipated from the reactor 20 to the machine room 8B is discharged to the outside together with the outside air guided to the machine room 8B.
制御基板22は上仕切り板7Aとは熱的にも隔離した状態で取付けられ、しかも電気部品箱H内に収容され、電気部品箱Hを構成する基板カバー18で熱的に保護されているので、リアクタ20の高熱の影響を受けることは無い。   The control board 22 is mounted in a state of being thermally isolated from the upper partition plate 7A, and is housed in the electric component box H, and is thermally protected by the board cover 18 constituting the electric component box H. The reactor 20 is not affected by the high heat.
スイッチング素子モジュール等の発熱性電気部品Dbは、制御基板22と間隙を存して実装されているとともに、サブヒートシンク36と密着状態に取付けられている。したがって、発熱性電気部品Dbが放散する高熱はサブヒートシンク36に伝熱され、制御基板22は高熱の影響を受けることは無い。   The heat generating electrical component Db such as the switching element module is mounted with a gap from the control board 22 and is attached in close contact with the sub heat sink 36. Therefore, the high heat dissipated by the heat-generating electrical component Db is transferred to the sub heat sink 36, and the control board 22 is not affected by the high heat.
サブヒートシンク36は放熱板33一面に取付けられ、放熱板33他面は熱交換室8Aに面して室外送風機13の作用による外気に晒されるので、効率よく放熱する。しかも、放熱板33には2個のヒートシンク35a、35bが取付けられ、熱交換室8Aに突出していて、さらに効率よく放熱する。   The sub heat sink 36 is attached to one surface of the heat radiating plate 33, and the other surface of the heat radiating plate 33 faces the heat exchange chamber 8 </ b> A and is exposed to the outside air by the action of the outdoor blower 13, so that heat is radiated efficiently. In addition, two heat sinks 35a and 35b are attached to the heat radiating plate 33 and project into the heat exchange chamber 8A to radiate heat more efficiently.
整流器等の発熱性電気部品Db1は、制御基板22から外れた位置にあり、サブヒートシンク36に直接取付けられるので、制御基板22に対して熱的影響を与えずにすむ。高熱はサブヒートシンク36に伝熱され、放熱板33およびヒートシンク35a,35bを介して放熱されることは変りがない。   The exothermic electrical component Db1 such as a rectifier is located away from the control board 22 and is directly attached to the sub heat sink 36, so that the control board 22 is not affected by heat. The high heat is transferred to the sub heat sink 36 and is radiated through the heat radiating plate 33 and the heat sinks 35a and 35b.
なお、熱交換室8Aに外気が導通するので、雨天の際は雨水が浸入して室外熱交換器10を濡らすことは避けられない。同時に、雨水は熱交換室8Aへ突出するヒートシンク35a,35bと、仕切り板7、ヒートシンクスペーサ30および放熱板33の熱交換室8A側の面を濡らす。   Since the outside air is conducted to the heat exchange chamber 8A, it is inevitable that rainwater enters and wets the outdoor heat exchanger 10 when it rains. At the same time, rainwater wets the heat sinks 35a and 35b protruding into the heat exchange chamber 8A and the surface of the partition plate 7, the heat sink spacer 30 and the heat radiating plate 33 on the heat exchange chamber 8A side.
ヒートシンク35a,35bおよび放熱板33は濡れることにより、かえって放熱量が増大して都合がよい。ただし、上仕切り板7Aとヒートシンクスペーサ30との合せ部と、ヒートシンクスペーサ30と放熱板33との合せ部から電気部品箱H内部へ雨水が毛細管現象により浸入すると、短絡事故の発生があるので防止しなければならない。   The heat sinks 35a and 35b and the heat radiating plate 33 are advantageous because they increase the amount of heat radiated. However, if rainwater enters the electrical component box H from the mating portion of the upper partition plate 7A and the heat sink spacer 30 and the mating portion of the heat sink spacer 30 and the heat radiating plate 33 due to a capillary phenomenon, it prevents a short circuit accident. Must.
ここでは、ヒートシンクスペーサ30と上仕切り板7Aとの合せ部において、図12(A)と図11に示すように、互いの上辺部と互いの左右両側部がラップしている。ラップ部分は上仕切り板7Aが熱交換室8A側にあり、ヒートシンクスペーサ30が機械室8B側にある。したがって、雨水は上記合せ部に浸入することなく、そのまま滴下する。   Here, as shown in FIG. 12 (A) and FIG. 11, the upper side portion and the left and right side portions of each other are overlapped at the joint portion between the heat sink spacer 30 and the upper partition plate 7 </ b> A. In the lap portion, the upper partition plate 7A is on the heat exchange chamber 8A side, and the heat sink spacer 30 is on the machine chamber 8B side. Therefore, rainwater is dropped as it is without entering the mating portion.
また、ヒートシンクスペーサ30と上仕切り板7Aとの合せ部における互いの下辺部では、ヒートシンクスペーサ30の下端下面に設けられる嵌め込み用リブ30f間に上仕切り板7Aを嵌め込むようにした。したがって、雨水は嵌め込み用リブ30fに浸入を阻止され、上仕切り板7Aとの嵌め込み部分を乗り越えることはない。   Further, the upper partition plate 7A is fitted between the fitting ribs 30f provided on the lower surface of the lower end of the heat sink spacer 30 at the lower sides of the mating portion of the heat sink spacer 30 and the upper partition plate 7A. Therefore, rainwater is prevented from entering the fitting rib 30f and does not get over the fitting portion with the upper partition plate 7A.
ヒートシンクスペーサ30と放熱板33との合せ部において、互いの上辺部を図12(A)に示し、左右両側辺部を図11に示すように、ヒートシンクスペーサ30の保護リブ30bが放熱板33の熱交換室8A側に突出し、ラップしている。したがって、雨水は上記合せ部に浸入することなく、熱交換室8A側においてそのまま滴下する。   In the joint portion of the heat sink spacer 30 and the heat radiating plate 33, the protection ribs 30 b of the heat sink spacer 30 are provided on the heat radiating plate 33 as shown in FIG. Projects to the heat exchange chamber 8A side and wraps. Therefore, rainwater is dripped as it is on the heat exchange chamber 8A side without entering the mating portion.
放熱板33は下端部に上記水切り部33aを備えている。放熱板33から直接、もしくはヒートシンクスペーサ30と、ヒートシンクスペーサ35a,35bを介して放熱板33下端に流下した水滴は、そのまま水切り部33aを伝わって流れ落ち、機械室8B側へ浸入することはない。   The heat radiating plate 33 includes the draining portion 33a at the lower end. The water droplets flowing down from the heat radiating plate 33 directly or through the heat sink spacer 30 and the heat sink spacers 35a and 35b to the lower end of the heat radiating plate 33 flow down as they are through the draining portion 33a and do not enter the machine room 8B side.
たとえば、極めて強い風圧等の影響により雨水が吹き上がり、放熱板水切り部33aとヒートシンクスペーサ30下辺部との間から浸入することが考えられる。しかしながら、図12(B)に示すように、ヒートシンクスペーサ30は下端機械室8B側の面に立ち壁30dを備え、放熱板33の下端は立ち壁30dと間隙を存して取付けられる。   For example, it is conceivable that rainwater blows up due to an extremely strong wind pressure or the like and enters from between the heat sink draining portion 33a and the lower side of the heat sink spacer 30. However, as shown in FIG. 12B, the heat sink spacer 30 includes a standing wall 30d on the surface on the lower end machine chamber 8B side, and the lower end of the heat radiating plate 33 is attached with a gap from the standing wall 30d.
放熱板水切り部33aとヒートシンクスペーサ30下辺部との間から浸入した雨水は、立ち壁30dに遮られる。そして、放熱板33と立ち壁30dとは間隙を存して取付けられるので、これらの間に毛細管現象が生じることが無い。すなわち、熱交換室8A側から電気部品箱H内への雨水の浸入を確実に阻止できる。   Rainwater that enters from between the heat sink draining portion 33a and the lower side of the heat sink spacer 30 is blocked by the standing wall 30d. And since the heat sink 33 and the standing wall 30d are attached with a gap, capillarity does not occur between them. That is, it is possible to reliably prevent rainwater from entering the electrical component box H from the heat exchange chamber 8A side.
なお、本発明は上述した実施の形態そのままに限定されるものではなく、実施段階ではその要旨を逸脱しない範囲で構成要素を変形して具体化できる。そして、上述した実施の形態に開示されている複数の構成要素の適宜な組合せにより種々の発明を形成できる。   Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments.
7…仕切り板、10…熱交換器、13…送風機、8A…熱交換室、15…圧縮機、5…配管類、8B…機械室、1…室外機本体、H…電気部品箱、Da…制御用電気部品、Db…発熱性電気部品、22…制御基板、37…開口部、33…放熱板、35a,35b…ヒートシンク、30…ヒートシンクスペーサ、33a…水切り部、30d…立ち壁、30f…嵌め込み用リブ。   7 ... Partition plate, 10 ... Heat exchanger, 13 ... Blower, 8A ... Heat exchange chamber, 15 ... Compressor, 5 ... Piping, 8B ... Machine room, 1 ... Outdoor unit body, H ... Electric component box, Da ... Electrical components for control, Db ... exothermic electrical components, 22 ... control board, 37 ... opening, 33 ... heat sink, 35a, 35b ... heat sink, 30 ... heat sink spacer, 33a ... draining portion, 30d ... standing wall, 30f ... Insertion rib.

Claims (5)

  1. 内部が仕切り板を介して、熱交換器および送風機を収容する熱交換室と、圧縮機および配管類を収容する機械室とに区分される、筐体である室外機本体と、
    前記仕切り板の機械室に対向する面に、熱的・電気的に絶縁構造をなして取付けられる電気部品箱と、
    この電気部品箱の内部に収容され、一面に電解コンデンサ、コネクタ等の制御用電気部品が電気的に接続され、他面にスイッチング素子モジュール等の発熱性電気部品が電気的に接続される制御基板と、
    この制御基板の少なくとも一部と対向する上記仕切り板部位に設けられる開口部と、
    この開口部を閉塞して取付けられ、一面が上記発熱性電気部品と伝熱状態で密着される放熱板と、
    この放熱板の他面に取付けられ、上記仕切り板部位の開口部から熱交換室側に突出し上記送風機の送風作用にともない放熱するヒートシンクと、
    略額縁状をなし、上記電気部品箱開口部の周縁部と上記放熱板の周縁部との間に介在される、絶縁材料からなるヒートシンクスペーサと、
    を具備することを特徴とする空気調和機の室外機。
    An outdoor unit main body that is a casing, the interior of which is divided into a heat exchange chamber that houses a heat exchanger and a blower, and a machine room that houses a compressor and piping via a partition plate,
    An electrical component box attached to the surface of the partition plate facing the machine room in a thermally and electrically insulating structure;
    A control board that is housed inside the electrical component box, electrically connected to one surface with control electrical components such as electrolytic capacitors and connectors, and electrically connected to a heat generating electrical component such as a switching element module on the other surface When,
    An opening provided in the partition plate portion facing at least a part of the control board;
    A heat sink that is attached by closing this opening, and one surface is in close contact with the exothermic electrical component in a heat transfer state,
    A heat sink that is attached to the other surface of this heat radiating plate, protrudes from the opening of the partition plate portion to the heat exchange chamber side, and dissipates heat with the air blowing action of the blower,
    A heat sink spacer made of an insulating material, having a substantially frame shape, interposed between the peripheral edge of the electrical component box opening and the peripheral edge of the heat sink,
    An outdoor unit for an air conditioner characterized by comprising:
  2. 上記ヒートシンクスペーサは、絶縁材料として、樹脂材料が用いられる
    ことを特徴とする請求項1記載の空気調和機の室外機。
    The outdoor unit of an air conditioner according to claim 1, wherein the heat sink spacer is made of a resin material as an insulating material.
  3. 上記放熱板は、この下端が機械室から開口部下端を乗り越えて熱交換室側に突出し、かつ熱交換室において下方に折曲げ形成される水切り部を備えた
    ことを特徴とする請求項1および請求項2のいずれかに記載の空気調和機の室外機。
    2. The heat radiating plate according to claim 1, further comprising a draining portion whose lower end protrudes from the machine room over the lower end of the opening and protrudes toward the heat exchange chamber and is bent downward in the heat exchange chamber. The outdoor unit of the air conditioner according to claim 2.
  4. 上記ヒートシンクスペーサは、この下端機械室側面に立ち壁を備え、
    上記放熱板は、この下端がヒートシンクスペーサ立ち壁と間隙を存するよう取付けられる
    ことを特徴とする請求項3記載の空気調和機の室外機。
    The heat sink spacer includes a standing wall on the side of the lower end machine room,
    4. The outdoor unit of an air conditioner according to claim 3, wherein the heat sink is attached so that the lower end thereof has a gap with the standing wall of the heat sink spacer.
  5. 上記ヒートシンクスペーサは、この下端下面に嵌め込み用リブを備え、
    上記電気部品箱の開口部周縁は、上記ヒートシンクスペーサ下端の嵌め込み用リブに嵌り合う
    ことを特徴とする請求項1および請求項2のいずれかに記載の空気調和機の室外機。
    The heat sink spacer includes a fitting rib on the lower surface of the lower end,
    The outdoor unit of an air conditioner according to any one of claims 1 and 2, wherein a peripheral edge of the opening of the electric component box is fitted into a fitting rib at a lower end of the heat sink spacer.
JP2009036693A 2009-02-19 2009-02-19 Air conditioner outdoor unit Active JP5148527B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104913399A (en) * 2014-03-10 2015-09-16 珠海格力电器股份有限公司 Outdoor unit
EP2525158A3 (en) * 2011-05-17 2018-08-15 Sanyo Electric Co., Ltd. Outdoor unit for air conditioner

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104949302B (en) * 2015-04-22 2018-01-19 珠海格力电器股份有限公司 Air-conditioning

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000283504A (en) * 1999-03-31 2000-10-13 Fujitsu General Ltd Outdoor machine of air conditioner
JP2001147035A (en) * 1999-11-19 2001-05-29 Fujitsu General Ltd Outdoor unit for air conditioner
JP2003153552A (en) * 2001-11-07 2003-05-23 Matsushita Electric Ind Co Ltd Arrangement structure and arrangement method for inverter, and compressor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000283504A (en) * 1999-03-31 2000-10-13 Fujitsu General Ltd Outdoor machine of air conditioner
JP2001147035A (en) * 1999-11-19 2001-05-29 Fujitsu General Ltd Outdoor unit for air conditioner
JP2003153552A (en) * 2001-11-07 2003-05-23 Matsushita Electric Ind Co Ltd Arrangement structure and arrangement method for inverter, and compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2525158A3 (en) * 2011-05-17 2018-08-15 Sanyo Electric Co., Ltd. Outdoor unit for air conditioner
CN104913399A (en) * 2014-03-10 2015-09-16 珠海格力电器股份有限公司 Outdoor unit

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