JP5870553B2 - Air conditioner outdoor unit - Google Patents

Air conditioner outdoor unit Download PDF

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JP5870553B2
JP5870553B2 JP2011187827A JP2011187827A JP5870553B2 JP 5870553 B2 JP5870553 B2 JP 5870553B2 JP 2011187827 A JP2011187827 A JP 2011187827A JP 2011187827 A JP2011187827 A JP 2011187827A JP 5870553 B2 JP5870553 B2 JP 5870553B2
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vent
mounting base
outdoor unit
heat exchanger
electrical component
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貴行 平尾
貴行 平尾
健太 根津
健太 根津
玄秀 岩本
玄秀 岩本
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Fujitsu General Ltd
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Description

本発明は、空気調和機の室外機に係わり、より詳細には、室外機に備えられた電装品ユニットの構造に関する。   The present invention relates to an outdoor unit of an air conditioner, and more particularly to a structure of an electrical component unit provided in the outdoor unit.

１台の室外機に対して複数台の室内機が備えられ室外機と室内機とが冷媒配管で接続された多室型の空気調和機が知られている。室外機内部は、室外機の筐体の一部を構成する底板に取り付けられた仕切板によって、圧縮機やアキュムレータ等が備えられた機械室と、熱交換器や送風ファン等が設置された熱交換器室とに区画されている。
そして、機械室の上部には圧縮機や送風ファン等の装置に駆動電力を供給する電源装置や室外機の運転を制御する制御基板等を備えた電装品ユニットが配置される。 There is known a multi-room type air conditioner in which a plurality of indoor units are provided for one outdoor unit and the outdoor unit and the indoor unit are connected by a refrigerant pipe. The interior of the outdoor unit is heat that is installed in a machine room equipped with a compressor, accumulator, etc., a heat exchanger, a blower fan, etc. by a partition plate attached to the bottom plate that forms part of the casing of the outdoor unit. It is divided into an exchanger room.
In the upper part of the machine room, an electrical component unit including a power supply device that supplies driving power to devices such as a compressor and a blower fan, a control board that controls the operation of the outdoor unit, and the like is disposed.

上述した電装品ユニットの従来例１には、室外機の正面に沿って配置される第１制御基板と、仕切板に沿って配置される第２制御基板と、第１制御基板と第２制御基板とを連結する複数の連結部材とを備え、第１制御基板と第２制御基板とを上面から見て略Ｖ字状に構成したものがある。
第１制御基板には、発熱量の多いインバータ基板や、パワートランジスタおよびパワートランジスタを冷却する大型のヒートシンクとを搭載し、第２制御基板には、圧縮機や四方弁、ファンモータ等を制御する制御部品を搭載している。そして第１制御基板上に実装されている発熱部品によって発せられた熱は、室外機の正面下部に設けた配管用開口から取り込んだ外気により冷され、仕切板の上部に形成された通気口を通って熱交換器室へと送られる構成となっている。
一方、室外機の下部に設けた配管用開口から取り込まれた外気は、一部が第２制御基板にも送られ、仕切板の上部に形成された通気口を通って熱交換器室へと送られることになり、機械室内に取り込まれた空気を全て第１制御基板上に実装されている発熱部品の冷却に活用することができない。（特許文献１参照）。 In the above-described conventional example 1 of the electrical component unit, the first control board arranged along the front surface of the outdoor unit, the second control board arranged along the partition plate, the first control board, and the second control board. There are a plurality of connecting members that connect the substrate, and the first control substrate and the second control substrate are configured in a substantially V shape when viewed from above.
The first control board is equipped with an inverter board that generates a large amount of heat, a power transistor and a large heat sink that cools the power transistor, and the second control board controls a compressor, a four-way valve, a fan motor, and the like. Control parts are installed. The heat generated by the heat generating component mounted on the first control board is cooled by the outside air taken in from the piping opening provided in the lower front part of the outdoor unit, and the vent formed in the upper part of the partition plate It is configured to be sent to the heat exchanger room.
On the other hand, a part of the outside air taken in from the piping opening provided in the lower part of the outdoor unit is also sent to the second control board, and passes to the heat exchanger room through the vent formed in the upper part of the partition plate. All the air taken into the machine room cannot be used for cooling the heat generating components mounted on the first control board. (See Patent Document 1).

そこで、電装品ユニット内に取り込まれた空気を全て発熱部品の冷却に活用するものに、図６に示す従来例２の空気調和機の室外機の電装品ユニットがある。これは、仕切板１００で熱交換器室１０１と、機械室１０２に区画され、機械室１０２の上部には電装品ユニット１０３が設けられ、この電装品ユニット１０３内にはインバータの電気部品１０４が収納されている。この電装品ユニット１０３には、熱交換器室と反対側の側面に外気を取り入れる冷却空気取入用のルーバー１０５が設けられ、熱交換器室側の側面には冷却空気吹出用のルーバー１０６が設けられている。仕切板１００には、冷却空気吹出用のルーバー１０６から空気を熱交換器室１０１に送り出すための通風穴１０７が設けられており、通風穴１０７は、熱交換器室１０１側に突出したダクト１０８に覆われている。ダクト１０８は下部に開口が設けられている。ダクト１０８の内側には、発熱部品１０９が装着されている。機械室１０２の外側板には、電装品ユニット１０３のルーバー１０５に連通される外気取入用の通風穴１１０が設けられている。
したがって、ダクト１０８の内側の発熱部品１０９は、送風機１１１の運転によって通風穴１１０から取り込まれ電装品ユニット１０３を通り冷却空気吹出用のルーバー１０６に集約してダクト１０８に吹き出された外気により冷却される。さらに、送風機１１１の運転によって生じるダクト１０８の周囲を通る風にも冷却される。（特許文献２参照）。 Therefore, there is an electric component unit of an outdoor unit of an air conditioner of Conventional Example 2 shown in FIG. 6 that uses all of the air taken into the electric component unit for cooling of the heat generating components. This is divided into a heat exchanger chamber 101 and a machine chamber 102 by a partition plate 100, and an electrical component unit 103 is provided in the upper portion of the machine chamber 102, and an electrical component 104 of an inverter is provided in the electrical component unit 103. It is stored. The electrical component unit 103 is provided with a cooling air intake louver 105 that takes in outside air on the side surface opposite to the heat exchanger chamber, and a cooling air blowing louver 106 is provided on the side surface on the heat exchanger chamber side. Is provided. The partition plate 100 is provided with a ventilation hole 107 for sending air from the cooling air blowing louver 106 to the heat exchanger chamber 101, and the ventilation hole 107 protrudes toward the heat exchanger chamber 101. Covered with The duct 108 has an opening at the bottom. A heat generating component 109 is mounted inside the duct 108. The outer plate of the machine room 102 is provided with a vent hole 110 for taking in outside air that communicates with the louver 105 of the electrical component unit 103.
Therefore, the heat generating component 109 inside the duct 108 is cooled by the outside air that is taken in from the ventilation hole 110 by the operation of the blower 111, passes through the electrical component unit 103, and is collected in the cooling air blowing louver 106 and blown out to the duct 108. The Furthermore, it is also cooled by the wind passing around the duct 108 generated by the operation of the blower 111. (See Patent Document 2).

特開２０１０−７２５３４号公報JP 2010-72534 A 実開昭６３−１５３０３４号公報Japanese Utility Model Publication No. 63-153034

しかしながら、従来例２の発熱部品１０９を覆うダクト１０８は、熱交換器室に向かって下部が開口しているため、ドレン水や吸込口から吹き込まれた雨水が送風機１１１で攪拌されて発熱部品１０９に当たる虞がある。
また、温度の高い空気は上昇し、発熱部品１０９により熱せられた温度の高い空気がダクト１０８の冷却空気吹出用のルーバー１０６の通風経路にない天井付近に溜まるため、冷却空気吹出用のルーバー１０６から吹き出された空気が、発熱部品１０９全体に当たるものとは言い難い。
さらに、発熱部品１０９を電装品ユニット１０３とは別の場所に配置することで、電装部品の組立作業に手間が掛かり、作業性が落ちることになる。 However, the duct 108 covering the heat generating component 109 of Conventional Example 2 has an opening at the bottom toward the heat exchanger chamber, so that drain water or rainwater blown from the suction port is stirred by the blower 111 and the heat generating component 109. There is a risk of hitting.
Further, the high-temperature air rises, and the high-temperature air heated by the heat-generating component 109 accumulates in the vicinity of the ceiling that is not in the ventilation path of the cooling air blowing louver 106 in the duct 108. Therefore, the cooling air blowing louver 106 It is difficult to say that the air blown out from the air hits the entire heat generating component 109.
Furthermore, by disposing the heat generating component 109 at a location different from the electrical component unit 103, it takes time to assemble the electrical component, and the workability is reduced.

本発明は以上述べた問題点を解決し、電装品ユニット内に搭載された発熱部品を効果的に冷却するとともに、発熱部品の熱を電装品ユニットの外へ排出する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 solves the above-described problems, effectively cools the heat generating components mounted in the electric component unit, and discharges the heat of the heat generating components to the outside of the electric component unit. The purpose is to provide.

上述した課題を解決するために、本発明は、筺体内部を仕切板で熱交換器室と機械室に区切り、前記熱交換器室には送風機と熱交換器を配置し、前記機械室には、上部に前記仕切板に固定された電装品ユニットを配置し、前記機械室側の筺体には前記電装品ユニットより下部に外気取込口を備えた空気調和機の室外機において、
前記電装品ユニットは、前記仕切板に沿って配置される第１基板取付台と、前記室外機正面に沿って配置される第２基板取付台と、第１基板取付台と第２基板取付台を連結する連結部材とからなり、
前記第１基板取付台は、上部に発熱部品を搭載し、同発熱部品より上部に第１通気口を設け、同発熱部品と同第１通気口は、箱型で底面に第２通気口を備えた発熱部品カバーで覆われることを特徴とする。 In order to solve the above-described problems, the present invention divides the inside of the housing into a heat exchanger room and a machine room with a partition plate, and arranges a blower and a heat exchanger in the heat exchanger room, In the outdoor unit of the air conditioner, in which the electrical component unit fixed to the partition plate is arranged at the upper part, and the housing on the machine room side is provided with an outside air intake port below the electrical component unit,
The electrical component unit includes a first board mounting base disposed along the partition plate, a second board mounting base disposed along the front surface of the outdoor unit, a first board mounting base, and a second board mounting base. And a connecting member for connecting
The first board mounting base has a heat generating component mounted on the top, a first vent is provided above the heat generating component, and the heat generating component and the first vent are box-shaped and have a second vent on the bottom. It is characterized by being covered with a heat generating component cover provided.

また、前記第２通気口の熱交換器室側には、通気孔を備えた遮水板を設けたことを特徴とする。   Further, a water shielding plate provided with a vent hole is provided on the heat exchanger chamber side of the second vent hole.

さらに、前記発熱部品カバーは、側面に中央部から上端にかけて内側に傾く傾斜面を備えたことを特徴とする。   Further, the heat generating component cover is provided with an inclined surface inclined inward from a central portion to an upper end on a side surface.

上記のように構成した本発明の空気調和機の室外機は、外気取込口から取り込まれた外気が、送風機により生じる風の流れに導かれ上昇し、機械室内の隙間を通り、電装品ユニットの第１基板取付台および第２基板取付台に搭載された制御部品や発熱部品を冷却する。
そして、電装品ユニット内を冷却した外気は、発熱部品カバーの第２通気口に流れ込み、発熱部品全体を冷却し、第１通気口より電装品ユニットの外へ排出するものとなる。 In the outdoor unit of the air conditioner of the present invention configured as described above, the outside air taken in from the outside air intake port is guided by the wind flow generated by the blower and rises, passes through the gap in the machine room, and the electrical component unit The control component and the heat generating component mounted on the first board mounting base and the second board mounting base are cooled.
Then, the outside air that has cooled the inside of the electrical component unit flows into the second vent of the heat generating component cover, cools the entire heat generating component, and is discharged from the first vent to the outside of the electrical component unit.

本発明による室外機の正面側斜視図である。It is a front side perspective view of the outdoor unit by this invention. 本発明による室外機の内部構造を示す図である。It is a figure which shows the internal structure of the outdoor unit by this invention. 本発明による電装品ユニットを示す図である。It is a figure which shows the electrical component unit by this invention. 本発明による電装品ユニットのコネクターカバーの構成を示す図である。It is a figure which shows the structure of the connector cover of the electrical component unit by this invention. 図３のＡ−Ａ部分断面図である。FIG. 4 is a partial cross-sectional view taken along line AA in FIG. 3. 従来例２による電装品ユニットの構成を示す図である。It is a figure which shows the structure of the electrical component unit by the prior art example 2. FIG.

以下、本発明を実施するための形態を、添付図面に基づいた実施例として詳細に説明する。   EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated in detail as an Example based on an accompanying drawing.

本発明に係る空気調和機の室外機は屋外に設置され、空調室内に設置される少なくとも1台以上の室内機と冷媒配管を介して接続されて冷凍サイクルを構成する。
以下、本発明の実施の形態を、添付図面に基づいて詳細に説明する。図１、図２に示すように、本実施例による空気調和機の室外機１は、略直方体形状の筐体を有する。この筐体の外郭は、主に鋼板を加工して構成され、前面の一方を覆う前面パネル１０と、前面パネル１０の上下２箇所に円形に開口された吹出口１ａと、吹出口１ａを覆って保護するファンガード１１と、一方の側面パネルを兼ねる背面パネル１２と、前面の他の一方を覆う取り外し可能なサービスパネル１３と、複数の四方形状の孔からなる吸込口１ｂを有する左側面パネル１４と、底板１５と、天板１６と、配管カバー１７とから構成されている。
底板１５は、前面パネル１０および背面パネル１２の一部と、配管カバー１７の下端とを、底板１５の周囲のフランジ１５ａとのネジ止めによって組み付け、天板１６は、前面パネル１０および背面パネル１２の上端を塞いで、ネジ止めによって組み付けている。 The outdoor unit of the air conditioner according to the present invention is installed outdoors, and is connected to at least one indoor unit installed in the air-conditioned room via a refrigerant pipe to constitute a refrigeration cycle.
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. As shown in FIGS. 1 and 2, the outdoor unit 1 of the air conditioner according to the present embodiment has a substantially rectangular parallelepiped housing. The outer shell of the housing is mainly formed by processing a steel plate, covers the front panel 10 that covers one of the front surfaces, the air outlet 1a that is opened circularly at two locations on the front panel 10 and the air outlet 1a. A left side panel having a suction port 1b composed of a plurality of four-sided holes, a fan guard 11 that protects the rear panel, a rear panel 12 that also serves as one side panel, a removable service panel 13 that covers the other front panel 14, a bottom plate 15, a top plate 16, and a piping cover 17.
The bottom plate 15 is assembled with a part of the front panel 10 and the back panel 12 and the lower end of the pipe cover 17 by screwing with a flange 15a around the bottom plate 15, and the top plate 16 is assembled with the front panel 10 and the back panel 12. The upper end of the cover is closed and assembled by screwing.

尚、以下の説明では、室外機１の筐体において、図１で前面パネル１０が配置された方を前面、その反対面を背面とし、前面パネル１０を正視したときにサービスパネル１３が配置された方を右側面、その反対面を左側面として説明を進める。   In the following description, in the case of the outdoor unit 1, the front panel 10 in FIG. 1 is the front surface, the opposite surface is the back surface, and the service panel 13 is disposed when the front panel 10 is viewed from the front. The explanation will proceed with the right side as the opposite side and the left side as the opposite side.

室外機１の筐体内部は、仕切板１８によって機械室２と熱交換器室３とに区画されている。熱交換器室３は、背面側に熱交換器４と、吹出口１ａに対向した前面側に２個の送風ファン３０とが設けられている。
熱交換器４は、密接して並列したアルミ材による薄板のフィン４ａと、同フィン４ａに直交するように蛇行状に配設された伝熱管４ｂとからなり、上面から見て略Ｌ字形状をなし、室外機１の左側面から背面に沿うように配置されている。
尚、室外機１の背面側は、背面パネル１２の側端と左側面パネル１４の側端との間に熱交換器４が露出して、送風ファン３０により熱交換器室３に外気を取り入れるための背面吸込口１ｃとなり、背面吸込口１ｃには保護部材１９が設けられている。
２個ある送風ファン３０は、それぞれ図示しないモータに軸支され、モータが室外機１に固定されたモータ取付台３１に取り付けられることにより、熱交換器室３内に配置される。 The inside of the casing of the outdoor unit 1 is partitioned into a machine room 2 and a heat exchanger room 3 by a partition plate 18. The heat exchanger chamber 3 is provided with a heat exchanger 4 on the back side and two blower fans 30 on the front side facing the air outlet 1a.
The heat exchanger 4 includes thin fins 4a made of closely-spaced aluminum materials and heat transfer tubes 4b arranged in a meandering manner so as to be orthogonal to the fins 4a. The outdoor unit 1 is arranged so as to extend from the left side surface to the back surface.
Note that, on the back side of the outdoor unit 1, the heat exchanger 4 is exposed between the side end of the back panel 12 and the side end of the left side panel 14, and outside air is taken into the heat exchanger chamber 3 by the blower fan 30. Therefore, a protective member 19 is provided on the rear suction port 1c.
The two blower fans 30 are each pivotally supported by a motor (not shown), and are arranged in the heat exchanger chamber 3 by being attached to a motor mount 31 fixed to the outdoor unit 1.

機械室２は、アキュムレータ２０や、図示しない圧縮機や四方弁および配管２１が収容されている。機械室２の上部には、一部を熱交換器室３側に突出し、仕切板１８に固定された電装品ユニット５が配置されている。   The machine room 2 accommodates an accumulator 20, a compressor, a four-way valve, and a pipe 21 (not shown). On the upper part of the machine room 2, an electrical component unit 5 that is partially protruded toward the heat exchanger room 3 and fixed to the partition plate 18 is disposed.

上記の構成により、空気調和機の室外機１は、例えば冷房運転時に、熱交換器４の伝熱管４ｂの内部を流通する高温・高圧の冷媒の熱を、伝熱管４ｂからフィン４ａに伝熱するとともに、この伝熱されたフィン４ａが、送風ファン３０により背面吸込口１ｃから吸い込まれた空気によって冷却されることで熱交換されるものである。   With the above configuration, the outdoor unit 1 of the air conditioner transfers the heat of the high-temperature and high-pressure refrigerant flowing through the heat transfer tube 4b of the heat exchanger 4 from the heat transfer tube 4b to the fins 4a, for example, during cooling operation. At the same time, the heat-transferred fins 4 a are heat-exchanged by being cooled by the air sucked from the rear suction port 1 c by the blower fan 30.

次に、電装品ユニット５の構成について説明する。図２、図３に示すように、電装品ユニット５の基本構造は、仕切板１８に沿って配置される第１基板取付台５０と、室外機正面のサービスパネル１３に沿って配置される第２基板取付台５１と、第１基板取付台５０と第２基板取付台５１の側面を連結する連結部材５２と、第１基板取付台５０と第２基板取付台５１の上面を連結して補強する連結部材５３とからなる。
第１基板取付台５０と第２基板取付台５１は上面から見て略Ｖ字状に構成され、第１基板取付台５０と第２基板取付台５１の間の空間には、アキュムレータ２０や配管２１の一部が位置している。 Next, the configuration of the electrical component unit 5 will be described. As shown in FIGS. 2 and 3, the basic structure of the electrical component unit 5 includes a first board mounting base 50 disposed along the partition plate 18 and a first panel disposed along the service panel 13 in front of the outdoor unit. Reinforce by connecting the two substrate mounting base 51, the connecting member 52 that connects the side surfaces of the first substrate mounting base 50 and the second substrate mounting base 51, and the upper surfaces of the first substrate mounting base 50 and the second substrate mounting base 51. Connecting member 53 to be connected.
The first substrate mounting base 50 and the second substrate mounting base 51 are configured in a substantially V shape when viewed from above, and the accumulator 20 and the piping are provided in the space between the first substrate mounting base 50 and the second substrate mounting base 51. A part of 21 is located.

第１基板取付台５０には、機械室側取付面５０ａに発熱量の多いパワートランジスタ６０や、コンデンサ６１およびインバータ基板６２等が搭載されるとともに、特に発熱量の多い発熱部品であるリアクター７０がリアクター取付台７１を介して上部角に搭載される。リアクター７０は図４に示すようにコイル部７０ａとコア部７０ｂとからなる。さらに、リアクター７０より上部に第１通気口５０ｂが開口される。第１通気口５０ｂの下端はリアクター７０の上端よりも上方であることが望ましいが、これに限るものではない。
なお、ここでは発熱部品は、リアクターで説明するが、これに限定されるものではない。 On the first substrate mounting base 50, a power transistor 60 having a large amount of heat generation, a capacitor 61, an inverter substrate 62, and the like are mounted on the machine room side mounting surface 50a. It is mounted on the upper corner via the reactor mount 71. As shown in FIG. 4, the reactor 70 includes a coil part 70a and a core part 70b. Further, the first vent 50 b is opened above the reactor 70. Although the lower end of the first vent 50b is desirably higher than the upper end of the reactor 70, the present invention is not limited to this.
In addition, although a heat-emitting component is demonstrated here as a reactor, it is not limited to this.

リアクター７０と第1通気口５０ｂは、図３、図４に示すように、板金を折り曲げ加工した箱型で機械室側取付面５０ａにネジ止めされる発熱部品カバー７２で覆われる。発熱部品カバー７２は、底面にリアクター７０で発熱量の多いコイル部７０ａに位置と大きさを合わせた第２通気口７２ａを備え、側面の一方または両方に中央部から上端にかけて内側に傾く傾斜面７２ｂを備えている。   As shown in FIGS. 3 and 4, the reactor 70 and the first vent 50 b are covered with a heat generating component cover 72 which is a box shape obtained by bending a sheet metal and is screwed to the machine room side mounting surface 50 a. The heat generating component cover 72 is provided with a second ventilation port 72a whose position and size are matched with the coil portion 70a that generates a large amount of heat in the reactor 70 on the bottom surface, and an inclined surface that is inclined inward from the center to the top at one or both sides 72b.

リアクター取付台７１は、図４、図５に示すように、板金を折り曲げ加工して凹凸を設け、左右に２箇所ある第１凸部７１ａにリアクター７０のコア部７０ｂを固定する。これによりリアクター７０と機械室側取付面５０ａとの間に空気が流れる隙間７３が設けられる。また、リアクター取付台７１の上端の第２凸部が曲面を構成することで、隙間７３を流れた空気が第１通気口５０ｂへ滑らかに導かれることになる。   As shown in FIGS. 4 and 5, the reactor mounting base 71 bends a sheet metal to provide irregularities, and fixes the core portion 70 b of the reactor 70 to the first convex portions 71 a that are two on the left and right. Accordingly, a gap 73 through which air flows is provided between the reactor 70 and the machine room side mounting surface 50a. Further, since the second convex portion at the upper end of the reactor mounting base 71 forms a curved surface, the air flowing through the gap 73 is smoothly guided to the first vent 50b.

第１基板取付台５０の熱交換器室側取付面５０ｃには、図３、図４に示すように、パワートランジスタ６０やインバータ基板６２を冷却する大型のヒートシンク６３を搭載し、第１通気口５０ｂの周囲には電装品ユニット５内に吸込口から吹き込まれた雨水が送風機４０で攪拌されて侵入することを防ぐ、板金を折り曲げ加工した箱型の遮水板８０が配置されている。   A large heat sink 63 for cooling the power transistor 60 and the inverter board 62 is mounted on the heat exchanger chamber side mounting surface 50c of the first board mounting base 50, as shown in FIGS. A box-shaped water shielding plate 80 formed by bending a sheet metal is disposed around 50b to prevent rainwater blown from the suction port into the electrical component unit 5 from being stirred by the blower 40 and entering.

遮水板８０は、図４、図５に示すように、遮水板内部の中央にドレン水の侵入を防ぐため上下２段の第１中仕切板８１および第２中仕切板８２が配置されている。上段に配置される第１中仕切板８１は第１基板取付台５０の熱交換器室側取付面５０ｃに取り付けられ遮水板８０の中央部まで垂直に延設され、下段に配置される第２中仕切板８２は遮水板８０の熱交換器室側の面に取り付けられ遮水板８０の中央部まで垂直に延設される。また、遮水板８０は、第２中仕切板８２より下部で熱交換器室側の面にパンチング状の複数の通気孔８２を備える。
交互に配置された第１中仕切板８１と第２中仕切板８２は空気は通過させるが、パンチング状の複数の通気孔８２から侵入した雨水は第１中仕切板８１および第２中仕切板８２に当たり電装品ユニット５内部へ侵入することはできない。
遮水板８０は、第１中仕切板８１よりも上部に第１通気口５０ｂが位置するように覆い、熱交換器室側取付面５０ｃにネジ止めされる。 As shown in FIGS. 4 and 5, the water shielding plate 80 is provided with a first middle partition plate 81 and a second middle partition plate 82 in two upper and lower stages to prevent drain water from entering the center of the water shielding plate. ing. The first middle partition plate 81 disposed in the upper stage is attached to the heat exchanger chamber side mounting surface 50c of the first substrate mounting base 50, extends vertically to the central portion of the water shielding plate 80, and is disposed in the lower stage. 2 The partition plate 82 is attached to the surface of the water shielding plate 80 on the heat exchanger chamber side and extends vertically to the center of the water shielding plate 80. Further, the water shielding plate 80 includes a plurality of punched vent holes 82 on the surface on the heat exchanger chamber side below the second middle partition plate 82.
Alternatingly arranged first partition plates 81 and second partition plates 82 allow air to pass therethrough, but rainwater that has entered through a plurality of punched vent holes 82 flows through the first partition plate 81 and the second partition plate. 82 and cannot enter the electrical component unit 5.
The water shielding plate 80 covers the first vent 50b above the first middle partition plate 81 and is screwed to the heat exchanger chamber side mounting surface 50c.

電装品ユニット５の第２基板取付台５１には、図３に示すように、メンテナンス時にサービスパネル１３を開けてすぐにチェックできるように、サービスパネル側の面に図示しないが表示基板や端子台６４を搭載し、機械室側の面には比較的発熱量の少ない制御部品６５を搭載している。   As shown in FIG. 3, the second board mounting base 51 of the electrical component unit 5 has a display board or terminal block (not shown) on the surface of the service panel so that the service panel 13 can be opened and checked immediately during maintenance. 64 is mounted, and a control component 65 having a relatively small amount of heat generation is mounted on the surface on the machine room side.

次に、機械室２内を通過して熱交換器室３内へ排出する空気の流れについて説明する。図２、図３、図５では、外気Ｓの通風経路を矢印で示している。図２に示す背面パネル１２の電装品ユニットより下部にある外気取込口１２ａから外気Ｓが取り込まれる。外気Ｓは送風機３０から生じる風の流れに導かれ上昇し、機械室２の収納部品の隙間を通り、電装品ユニット５内全体を巡り、第２基板取付台５１の制御部品６５や、第１基板取付台５０に搭載されたパワートランジスタ６０や、コンデンサ６１およびインバータ基板６２の発熱部品によって発せられた熱を冷却する。
その後外気Ｓは、送風機３０から生じる風の流れによって発熱部品カバー７２の第２通気口７２ａに集約して流れ込む。図３、図５に示すように、第２通気口７２ａはリアクター７０で発熱量の多いコイル部７０ａに位置と大きさを合わせてあり、またリアクター７０が円筒形を寝かした形状であることで、第２通気口７２ａから発熱部品カバー７２に流れ込んだ外気Ｓは、リアクター７０の上部にある第１通気口５０ｂに向かいリアクター７０形状に沿ってリアクター７０の周囲を包み込むように上昇することでリアクター７０全体を冷却することができる。
リアクター７０を冷却してさらに温度の上がった外気Ｓは、第１通気口５０ｂに導かれ、電装品ユニット５の外へ排出される。また、発熱部品カバー７０の天井付近に溜まった温度の高い空気も、傾斜面７２ｂにより第１通気口５０ｂに導かれ、電装品ユニット５の外へ排出される。
排出された外気Ｓは、第１通気口５０ｂから遮水板８０内へ流れ込み、送風機３０に導かれ、第１中仕切板８１と第２中仕切板８２の間を通過して通気孔８３から熱交換器室３へ排出される構成となっている。
なお通過経路の通気口の面積は、第２通気口７２ａ＞第１通気口５０ｂ＞通気孔８３で構成することで、風速が速くなりリアクター７０の発熱を効率良く冷却することが可能となる。 Next, the flow of air that passes through the machine chamber 2 and is discharged into the heat exchanger chamber 3 will be described. 2, 3, and 5, the ventilation path of the outside air S is indicated by arrows. Outside air S is taken in from the outside air inlet 12a located below the electrical component unit of the back panel 12 shown in FIG. The outside air S rises as it is guided by the flow of wind generated from the blower 30, passes through the gaps between the storage components in the machine room 2, travels through the entire electrical component unit 5, and controls the first board mounting base 51 control component 65 The heat generated by the power transistor 60 mounted on the board mounting base 50, the heat generating components of the capacitor 61 and the inverter board 62 is cooled.
Thereafter, the outside air S collects and flows into the second vent 72 a of the heat generating component cover 72 by the flow of wind generated from the blower 30. As shown in FIGS. 3 and 5, the second vent 72 a is aligned with the position and size of the coil portion 70 a that generates a large amount of heat in the reactor 70, and the reactor 70 has a cylindrical shape. The outside air S that has flowed into the heat generating component cover 72 from the second vent 72a rises toward the first vent 50b at the top of the reactor 70 so as to wrap around the reactor 70 along the shape of the reactor 70. The entire 70 can be cooled.
The outside air S whose temperature has been further increased by cooling the reactor 70 is guided to the first vent 50 b and discharged to the outside of the electrical component unit 5. Further, high-temperature air collected near the ceiling of the heat generating component cover 70 is also guided to the first vent 50 b by the inclined surface 72 b and is discharged out of the electrical component unit 5.
The discharged outside air S flows into the water shielding plate 80 from the first vent 50b, is guided to the blower 30, passes between the first middle partition plate 81 and the second middle partition plate 82, and from the vent hole 83. It is configured to be discharged to the heat exchanger chamber 3.
In addition, the area of the vent of the passage route is configured by the second vent 72a> the first vent 50b> the vent 83, so that the wind speed is increased and the heat generation of the reactor 70 can be efficiently cooled.

１ 室外機
１２ａ 外気取込口
１８ 仕切板
２ 機械室
３ 熱交換器室
３０ 送風ファン
５ 電装品ユニット
５０ 第１基板取付台
５０ｂ 第１通気口
５１ 第２基板取付台
７０ リアクター（発熱部品）
７２ 発熱部品カバー
７２ａ 第２通気口
８０ 遮水板
８３ 通気孔 DESCRIPTION OF SYMBOLS 1 Outdoor unit 12a Outside air intake 18 Partition plate 2 Machine room 3 Heat exchanger room 30 Blower fan 5 Electrical component unit 50 First board mounting base 50b First vent 51 51 Second board mounting base 70 Reactor (heat generation component)
72 Heating part cover 72a Second vent 80 Water shielding plate 83 Vent

Claims (1)

筺体内部を仕切板で熱交換器室と機械室に区切り、前記熱交換器室には送風機と熱交換器を配置し、前記機械室には、上部に前記仕切板に固定された電装品ユニットを配置し、前記機械室側の筺体には前記電装品ユニットより下部に外気取込口を備えた空気調和機の室外機において、
前記電装品ユニットは、前記仕切板に沿って配置される第１基板取付台と、前記室外機正面に沿って配置される第２基板取付台と、第１基板取付台と第２基板取付台を連結する連結部材とからなり、
前記第１基板取付台は、上部に発熱部品を搭載し、同発熱部品より上部に第１通気口を設け、同発熱部品と同第１通気口は、箱型で底面に第２通気口を備えた発熱部品カバーで覆われ、前記第２通気口の熱交換器室側には、通気孔を備えた遮水板を設けたことを特徴とする空気調和機の室外機。 The interior of the housing is divided into a heat exchanger room and a machine room by a partition plate, a blower and a heat exchanger are arranged in the heat exchanger room, and an electrical component unit fixed to the partition plate at the upper part in the machine room In the outdoor unit of the air conditioner provided with an outside air intake port below the electrical component unit in the housing on the machine room side,
The electrical component unit includes a first board mounting base disposed along the partition plate, a second board mounting base disposed along the front surface of the outdoor unit, a first board mounting base, and a second board mounting base. And a connecting member for connecting
The first board mounting base has a heat generating component mounted on the top, a first vent is provided above the heat generating component, and the heat generating component and the first vent are box-shaped and have a second vent on the bottom. An outdoor unit for an air conditioner, wherein the outdoor unit is covered with a heat generating component cover provided, and a water shielding plate having a vent hole is provided on the heat exchanger chamber side of the second vent hole .
JP2011187827A 2011-08-30 2011-08-30 Air conditioner outdoor unit Active JP5870553B2 (en)

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