JP4660130B2 - Air conditioner outdoor unit - Google Patents

Air conditioner outdoor unit Download PDF

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Publication number
JP4660130B2
JP4660130B2 JP2004205570A JP2004205570A JP4660130B2 JP 4660130 B2 JP4660130 B2 JP 4660130B2 JP 2004205570 A JP2004205570 A JP 2004205570A JP 2004205570 A JP2004205570 A JP 2004205570A JP 4660130 B2 JP4660130 B2 JP 4660130B2
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Prior art keywords
heat
control board
heat generating
box
generating element
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JP2005127691A (en
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好章 金子
一博 嶋岡
由実 草間
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Priority to JP2004205570A priority Critical patent/JP4660130B2/en
Priority to CNB2004100825299A priority patent/CN1272587C/en
Priority to KR1020040076724A priority patent/KR100618491B1/en
Publication of JP2005127691A publication Critical patent/JP2005127691A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/20—Electric components for separate outdoor units
    • F24F1/24—Cooling of electric components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/20—Electric components for separate outdoor units
    • F24F1/22—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Other Air-Conditioning Systems (AREA)

Description

本発明は、空気調和機の室外機に関し、特に室外機内に設置された電装箱の内部に収容されているパワーモジュール等の発熱性を持つ電気部品の冷却構造に関する。   The present invention relates to an outdoor unit of an air conditioner, and more particularly to a cooling structure for an electrical component having heat generation such as a power module housed in an electrical equipment box installed in the outdoor unit.

通常、空気調和機の室外機は、外装を成す箱体内を仕切板によって、熱交換器及び送風機等が収容された熱交換室と、圧縮機及びアキュームレータ等が収容された機械室とに区画形成されると共に、仕切板の上部の箱体内には、機械室の上部と熱交換器室の上部の一部とに跨るように電装箱が略水平の状態で配置されている。   Usually, an outdoor unit of an air conditioner is partitioned into a heat exchange chamber in which a heat exchanger, a blower, and the like are accommodated, and a machine room in which a compressor, an accumulator, and the like are accommodated, with a partition plate in the outer casing. In addition, an electrical box is disposed in a substantially horizontal state so as to straddle the upper part of the machine room and a part of the upper part of the heat exchanger room in the box above the partition plate.

また、前記電装箱の内部には、空気調和機の運転を制御する多数の電気部品が搭載された制御基板が設けられており、この制御基板に搭載された多数の電気部品の中には、インバータ用のパワーモジュールやブリッジダイオードのような発熱性の電気部品がある。この発熱性の電気部品（以下、発熱素子という）には、放熱を促進して発熱素子を冷却するためのヒートシンクが熱伝導関係に取り付けられている（例えば、特許文献１参照）。そして、このヒートシンクは、送風機が設置された通風性の良い熱交換器室に延出した電装箱の延出部分に取り付けられている。
特開２００２−２４３２１０号公報 Further, inside the electrical box, a control board on which a large number of electrical components for controlling the operation of the air conditioner is mounted, and among the many electrical parts mounted on the control board, There are exothermic electrical components such as inverter power modules and bridge diodes. A heat sink for promoting heat dissipation and cooling the heat generating element is attached to the heat generating electrical component (hereinafter referred to as a heat generating element) in a heat conductive relationship (for example, see Patent Document 1). And this heat sink is attached to the extension part of the electrical equipment box extended to the heat exchanger room with favorable ventilation which was installed with the air blower.
JP 2002-243210 A

ところで、パワーモジュール等の発熱素子１０１は、図１０に示すように、通常、直方体を成しており、その一面ａが制御基板１０２に接して設けられ、かつ、他面ｂがヒートシンク１０３の一面ｃと密接している。そして、発熱素子１０１とヒートシンク１０３の互いの一面ｂ、ｃを密接させることにより、発熱素子１０１で発生する熱の伝導性を良くし、ヒートシンク１０３から熱を放出させて発熱素子１０１の冷却を図っている。   By the way, as shown in FIG. 10, the heat generating element 101 such as a power module usually has a rectangular parallelepiped shape, and its one surface a is provided in contact with the control board 102, and the other surface b is one surface of the heat sink 103. Close to c. The heat generating element 101 and the heat sink 103 are brought into close contact with each other b and c, thereby improving the conductivity of the heat generated in the heat generating element 101 and releasing the heat from the heat sink 103 to cool the heat generating element 101. ing.

しかしながら、発熱素子１０１の熱は、ヒートシンク１０３へ伝導されるばかりでなく、この発熱素子１０１を搭載する制御基板１０２へも伝導するため、発熱素子１０１の発熱が原因となって、制御基板１０２の温度が上昇する心配があった。   However, the heat of the heating element 101 is not only conducted to the heat sink 103 but also to the control board 102 on which the heating element 101 is mounted. I was worried about the temperature rising.

本発明は、上述の実情に鑑みてなされたものであり、制御基板に搭載された発熱素子の熱が、ヒートシンクへ良好に伝わるようにしつつ、制御基板には伝わりにくくして、発熱素子の冷却効果が高められる空気調和機の室外機を提供できるようにすることを目的としている。   The present invention has been made in view of the above-described circumstances. The heat of the heat generating element mounted on the control board is transmitted to the heat sink well, but is difficult to be transmitted to the control board, thereby cooling the heat generating element. The purpose of the present invention is to provide an outdoor unit for an air conditioner that is highly effective.

請求項１に記載の発明は、箱体の底部を構成する底板上に仕切板を立設し、この仕切板を境にして圧縮機が配置された機械室と、熱交換器及び送風機が配置された熱交換器室とに箱体内を区画し、前記仕切板の上部には、前記機械室と熱交換器室とに跨って略水平に延びる電装箱が配設され、この電装箱内に発熱素子を搭載した制御基板が収容されている空気調和機の室外機において、 前記電装箱には、前記制御基板を取り付ける取付部と、前記発熱素子の冷却用のヒートシンクを取り付けるヒートシンクの取付部とが互いに平行に設けられ、前記制御基板には前記発熱素子がホルダを介して取り付けられる構成とし、前記ホルダは、前記発熱素子を収容する収納部を有し、この収容部には発熱素子の一部に当接し前記発熱素子と制御基板との間に空気を流す隙間を形成するための受け台が設けられており、且つこの受け台は、発熱素子を収容する収納部の四隅に設けられていることを特徴とする。 In the first aspect of the present invention, a partition plate is erected on the bottom plate constituting the bottom of the box, and a machine room in which a compressor is disposed with the partition plate as a boundary, a heat exchanger, and a blower are disposed. A box body is partitioned into the heat exchanger chamber, and an electrical box extending substantially horizontally across the machine room and the heat exchanger chamber is disposed above the partition plate. In an outdoor unit of an air conditioner in which a control board on which a heating element is mounted is accommodated, the electrical equipment box has an attachment part for attaching the control board, and a heat sink attachment part for attaching a heat sink for cooling the heating element. Are arranged in parallel with each other, and the heating element is attached to the control board via a holder, and the holder has a storage portion for storing the heating element, and the storage portion includes one of the heating elements. The heating element and the control board Cradle is provided for forming a gap for flowing air between the and the cradle, characterized in that provided at the four corners of the housing part for housing the heating element.

請求項２に記載の発明は、請求項１に記載の空気調和機の室外機において、前記収納部には、発熱素子の周囲を囲む周壁が設けられ、かつ、この周壁の一部には切欠きが形成されていることを特徴とする。 According to a second aspect of the present invention, in the outdoor unit for an air conditioner according to the first aspect, the storage portion is provided with a peripheral wall surrounding the periphery of the heating element, and a part of the peripheral wall is cut. A notch is formed.

本発明の空気調和機の室外機は、箱体の底部を構成する底板上に仕切板を立設し、この仕切板を境にして圧縮機が配置された機械室と、熱交換器及び送風機が配置された熱交換器室とに箱体内を区画し、前記仕切板の上部には、前記機械室と熱交換器室とに跨って略水平に延びる電装箱が配設され、この電装箱内に発熱素子を搭載した制御基板が収容されている空気調和機の室外機において、前記電装箱には、前記制御基板を取り付ける取付部と、前記発熱素子の冷却用のヒートシンクを取り付けるヒートシンクの取付部とが互いに平行に設けられ、前記制御基板には発熱素子がホルダを介して取り付けられる構成とし、前記ホルダは、前記発熱素子を収容する収納部を有し、この収容部には発熱素子の一部に当接し前記発熱素子と制御基板との間に空気を流す隙間を形成するための受け台が設けられている構成であるから、発熱素子とヒートシンクとは互いに密接することが可能となって発熱素子の熱が良好にヒートシンクへ伝わる一方、発熱素子は、前記受け台によって、それの一部のみがホルダに接する関係上、発熱素子の熱がホルダを介して制御基板へ伝わるのを抑制できる。そのため、制御基板の温度上昇が抑えられるとともに、発熱素子の冷却効果を高めることができる。しかも、この受け台は、発熱素子を収容する収納部の四隅に設けられているため、制御基板への熱伝導を抑えつつ発熱素子を収納部へ安定的に収容可能である。   The outdoor unit of the air conditioner of the present invention includes a machine room in which a partition plate is erected on the bottom plate constituting the bottom of the box body, and a compressor is disposed with the partition plate as a boundary, a heat exchanger, and a blower The electric box is partitioned into a heat exchanger chamber in which is disposed, and an electrical box extending substantially horizontally across the machine room and the heat exchanger chamber is disposed above the partition plate. In an outdoor unit of an air conditioner in which a control board having a heating element mounted therein is accommodated, a mounting portion for mounting the control board and a heat sink for mounting a heat sink for cooling the heating element are mounted on the electrical equipment box. And a heating element is attached to the control board via a holder. The holder has a storage part for storing the heating element, and the storage part includes a heating element. The heating element and the control board in contact with a part Since the cradle for forming a gap for flowing air is provided between the heat generating element and the heat sink, the heat generating element and the heat sink can be in close contact with each other, and the heat of the heat generating element is transmitted to the heat sink well. The heat generating element can suppress the heat of the heat generating element from being transmitted to the control board through the holder because only a part of the heat generating element is in contact with the holder. Therefore, the temperature rise of the control board can be suppressed, and the cooling effect of the heating element can be enhanced. In addition, since the cradle is provided at the four corners of the storage unit that stores the heat generating element, the heat generating element can be stably stored in the storage unit while suppressing heat conduction to the control board.

また、ホルダの収納部には、発熱素子の周囲を囲む周壁が設けられ、かつ、この周壁の一部には切欠きが形成されているから、収容部内に収容された発熱素子の空気との接触面積を拡大させることができる。   In addition, the holder storage portion is provided with a peripheral wall surrounding the periphery of the heat generating element, and a notch is formed in a part of the peripheral wall, so that the air of the heat generating element stored in the storage portion The contact area can be enlarged.

以下、本発明の実施の一形態を図に基づいて説明すると、図１は本発明の実施の一形態を示す室外機の分解斜視図である。図１において、１は箱体状とした空気調和機の室外機であり、この室外機１は、鋼板製の底板２の上に、同じく鋼板製の仕切板３が立設されており、この仕切板３の左右の両側には、熱交換器室Ａと機械室Ｂとが区画形成されている。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of an outdoor unit showing an embodiment of the present invention. In FIG. 1, 1 is a box-shaped outdoor unit of an air conditioner. This outdoor unit 1 has a steel plate partition plate 3 erected on a steel plate bottom plate 2. A heat exchanger chamber A and a machine chamber B are partitioned on the left and right sides of the partition plate 3.

前記機械室Ｂには、冷凍サイクルの一部を構成する圧縮機４、アキュームレータ５、冷媒配管６及び電装箱７等が配置されている。また、前記熱交換器室Ａには、室外熱交換器８及びこの室外熱交換器８に送風する室外送風機９等が設置されている。   In the machine room B, a compressor 4, an accumulator 5, a refrigerant pipe 6, an electrical box 7, and the like that constitute a part of the refrigeration cycle are arranged. In the heat exchanger chamber A, an outdoor heat exchanger 8 and an outdoor fan 9 for blowing air to the outdoor heat exchanger 8 are installed.

前記室外機１は、前記した底板２や仕切板３の他に、鋼板製の左右両側板１２、１３、天板１４、この天板１４に一体成型された前パネル１５及び前記右側板１３に一体成型された背板１６等を備えて構成され、これらによって室外機１の外装としての箱体が構成される。また、前記左側板１２には、鎧戸を有する複数の開口が形成され、前記右側板１３には、前記冷媒配管６及びユニット間ケーブルを引き出すための引出口が形成され、前パネル１５には格子が取り付けられた送風吹出し用の開口が形成されている。   In addition to the bottom plate 2 and the partition plate 3 described above, the outdoor unit 1 includes steel plate left and right side plates 12 and 13, a top plate 14, a front panel 15 integrally formed on the top plate 14, and the right side plate 13. It is configured to include a back plate 16 and the like that are integrally molded, and these constitute a box as an exterior of the outdoor unit 1. The left side plate 12 is formed with a plurality of openings having an armored door, the right side plate 13 is formed with an outlet for drawing out the refrigerant pipe 6 and the inter-unit cable, and the front panel 15 has a grid. An opening for blowing air is attached.

前記熱交換器室Ａの背面側は開放されており、この開放された背面側には、前記室外熱交換器８が配置され、また、前記機械室Ｂの背面側には前記背板１６が配置されている。前記室外熱交換器８の背面側の上部には補強板１７が配置され、この補強板１７は、前記熱交換器室Ａ及び機械室Ｂのほぼ全幅にわたって設けられている。前記天板１４は、左右の側板１２、１３と室外熱交換器８の上部に配置された補強板１７の上に載せて固定する。   The back side of the heat exchanger room A is open, the outdoor heat exchanger 8 is disposed on the open back side, and the back plate 16 is provided on the back side of the machine room B. Has been placed. A reinforcing plate 17 is disposed at the upper part on the back side of the outdoor heat exchanger 8, and the reinforcing plate 17 is provided over almost the entire width of the heat exchanger chamber A and the machine chamber B. The top plate 14 is mounted and fixed on the left and right side plates 12 and 13 and the reinforcing plate 17 disposed above the outdoor heat exchanger 8.

図２は、前板を外した状態の室外機の正面図である。図２において、前記箱体内における仕切板３の上部には、前記した電装箱７が略水平状態に取り付けられており、この電装箱７は、前記仕切板３を跨いで前記機械室Ｂ側から熱交換器室Ａ側に一部が延出している。即ち、前記電装箱７は、機械室Ｂと熱交換器室Ａとに跨って略水平に延びるように仕切板３の上部に配置されている。前記電装箱７には、その天面から前面にわたってスポンジ状のシール材１８が配置されており、このシール材１８は、仕切板３が配置された位置の上部に配置されている。また、前記シール材１８は前記熱交換器室Ａと機械室Ｂとの間の水密を保つためのものである。   FIG. 2 is a front view of the outdoor unit with the front plate removed. In FIG. 2, the above-described electrical box 7 is attached to the upper part of the partition plate 3 in the box body in a substantially horizontal state. The electrical box 7 straddles the partition plate 3 from the machine room B side. A part extends to the heat exchanger chamber A side. That is, the electrical box 7 is disposed on the upper part of the partition plate 3 so as to extend substantially horizontally across the machine room B and the heat exchanger room A. In the electrical box 7, a sponge-like sealing material 18 is disposed from the top surface to the front surface, and the sealing material 18 is disposed at an upper portion of the position where the partition plate 3 is disposed. The sealing material 18 is for maintaining watertightness between the heat exchanger chamber A and the machine chamber B.

上述の構成により、前記熱交換器室Ａには前面（前パネル１５）及び側面の開口から雨水が浸入するが、前記機械室Ｂは、天板１４、前パネル１５、右側板１３及び背板１６によって覆われているため、雨水が浸入しないようになっている。   With the above-described configuration, rainwater enters the heat exchanger chamber A from the front (front panel 15) and side openings, but the machine room B includes the top plate 14, the front panel 15, the right side plate 13, and the back plate. Since it is covered with 16, rainwater does not enter.

図３は電装箱の斜視図、図４は上蓋を外した状態の電装箱の斜視図である。図３において、前記電装箱７は、下部の箱体状の箱部２１と、上部の平板状の基板収納部２２とを合成樹脂にて一体成型して成るものである。また、前記基板収納部２２は、箱部２１の上方から上左方にかけて形成されている。   FIG. 3 is a perspective view of the electrical box, and FIG. 4 is a perspective view of the electrical box with the top cover removed. In FIG. 3, the electrical box 7 is formed by integrally molding a lower box-like box portion 21 and an upper flat plate-like substrate storage portion 22 with a synthetic resin. The substrate storage unit 22 is formed from above the box unit 21 to the upper left side.

前記箱部２１は、後板２３及び下板２４を有して機械室Ｂ側に設けられ、それの上方、前方及び左右方向に開口しており、その前開口部２１ａ及び右開口部２１ｂが機械室Ｂへ臨み、左開口部２１ｃが熱交換器室Ａ側へ臨んでいる。前記下板２４の上側には、電気部品及び電装箱７内の配線類を固定するための配線固定部２５が設けられ、また、前記電装箱７の左寄りの前後両端部には、この電装箱７を前記仕切板３に固定するための電装箱固定部２６が設けられている。また、２７は電装箱７の上蓋、３１は周囲壁を示している。   The box portion 21 has a rear plate 23 and a lower plate 24 and is provided on the machine room B side. The box portion 21 is opened in the upper, front and left and right directions. The front opening portion 21a and the right opening portion 21b Facing the machine room B, the left opening 21c faces the heat exchanger room A side. On the upper side of the lower plate 24, there are provided wiring fixing portions 25 for fixing electric components and wirings in the electric box 7. The electric box is provided at both front and rear end portions of the electric box 7 on the left side. An electrical box fixing part 26 for fixing 7 to the partition plate 3 is provided. Reference numeral 27 denotes an upper cover of the electrical box 7 and reference numeral 31 denotes a peripheral wall.

図４において、前記基板収納部２２における内側のフランジ３２には、前記制御基板３３を固定するためのねじ孔を有する取付部としての２ヵ所のボス３６、３６を立設している。前記制御基板３３には、半円形の２ヵ所の切欠き３５、３５と、２ヵ所の挿通ねじ孔３７、３７と、複数の電気部品の接続ピンを挿通するための多数のピン孔ｎ、ｎ・・が設けられている。   In FIG. 4, two bosses 36, 36 as upright mounting portions having screw holes for fixing the control substrate 33 are erected on the inner flange 32 of the substrate storage portion 22. The control board 33 has two semicircular cutouts 35, 35, two insertion screw holes 37, 37, and a plurality of pin holes n, n for inserting connection pins of a plurality of electrical components.・ ・ Is provided.

前記切欠き３５、３５には、前記ヒートシンク３９を下側からヒートシンク３９の取付部６５へねじ止め固定したときに、それらのねじの先端が通り抜けるようになっている。   When the heat sink 39 is screwed and fixed to the mounting portion 65 of the heat sink 39 from below, the tips of the screws pass through the notches 35 and 35.

前記制御基板３３は、半田付けのための半田面が上になるようにボス３６、３６の上に置かれ、前記挿通ねじ孔３７、３７にねじを通してそのねじをボス３６、３６へ螺合させることにより固定される。前記制御基板３３の下面側には制御用の各種の電気部品が配置されており、前記熱交換器室Ａ側に位置する制御基板３３の一端部には、図７に示すように、インバータ用のパワーモジュール３８ａとブリッジダイオード３８ｂとを含む発熱素子３８が隣接して取り付けられている。   The control board 33 is placed on the bosses 36 and 36 so that the solder surface for soldering is on the top, and screws are inserted into the insertion screw holes 37 and 37 to screw the screws into the bosses 36 and 36. It is fixed by. Various electric parts for control are arranged on the lower surface side of the control board 33, and at one end of the control board 33 located on the heat exchanger chamber A side, as shown in FIG. A heating element 38 including a power module 38a and a bridge diode 38b is attached adjacently.

ここで、前記したインバータ用のパワーモジュール３８ａとブリッジダイオード３８ｂとを含む発熱素子３８の制御基板３３への取り付けについて説明する。図５はホルダ単体の斜視図、図６はホルダを制御基板へ取り付けた状態を下から見た要部斜視図、図７はホルダと発熱素子を制御基板へ取り付けた状態を下から見た要部斜視図である。   Here, attachment of the heating element 38 including the inverter power module 38a and the bridge diode 38b to the control board 33 will be described. FIG. 5 is a perspective view of the holder alone, FIG. 6 is a perspective view of the main part when the holder is attached to the control board, and FIG. 7 is a main part when the holder and the heating element are attached to the control board. FIG.

前記インバータ用のパワーモジュール３８ａとブリッジダイオード３８ｂとを含む発熱素子３８は、図７に示すように、合成樹脂製のホルダ４０を介して制御基板３３に取り付けられている。前記ホルダ４０は細長く平板状の箱形を呈しており、このホルダ４０の長手方向の寸法は、前記制御基板３３の短手方向の寸法よりも少し短い寸法になっている。   As shown in FIG. 7, the heating element 38 including the inverter power module 38a and the bridge diode 38b is attached to the control board 33 via a holder 40 made of synthetic resin. The holder 40 has a long and flat box shape, and the size of the holder 40 in the longitudinal direction is slightly shorter than the size of the control board 33 in the short direction.

前記ホルダ４０は、前記制御基板３３における熱交換器室Ａ側の端部に基板当接面４１を上にして取り付けられる。前記基板当接面４１には、図５に示すように、上方に突出する４ヵ所のホルダ固定爪４２、４２・・が設けられており、一方、図４に示すように、前記制御基板３３には、ホルダ固定爪４２に対応して４ヵ所の角孔４３、４３・・が形成されている。   The holder 40 is attached to the end of the control substrate 33 on the heat exchanger chamber A side with the substrate contact surface 41 facing up. As shown in FIG. 5, the substrate abutting surface 41 is provided with four holder fixing claws 42, 42,... That protrude upward, whereas, as shown in FIG. Are formed with four square holes 43, 43... Corresponding to the holder fixing claws 42.

前記角孔４３は、大小幅の異なる四角形の孔を組み合せて作られており、幅広の孔にホルダ固定爪４２を挿入し、このホルダ固定爪４２を幅狭の孔へスライドさせることにより、そのホルダ固定爪４２が角孔４３の縁に掛けられて、前記ホルダ４０が制御基板３３に固定されることになる。   The square hole 43 is formed by combining square holes of different sizes, and the holder fixing claw 42 is inserted into the wide hole, and the holder fixing claw 42 is slid into the narrow hole. The holder fixing claw 42 is hung on the edge of the square hole 43, and the holder 40 is fixed to the control board 33.

図６において、前記ホルダ４０における発熱素子３８を取り付ける面側には、前記パワーモジュール３８ａとブリッジダイオード３８ｂを取り付けるための２つの素子収容部４４、４５が形成されている。各素子収容部４４、４５は、ホルダ４０の長手方向に別れてそれぞれ形成されている。   In FIG. 6, two element accommodating portions 44 and 45 for attaching the power module 38a and the bridge diode 38b are formed on the surface side of the holder 40 to which the heating element 38 is attached. The element accommodating portions 44 and 45 are formed separately in the longitudinal direction of the holder 40.

前記パワーモジュール３８ａ用の素子収容部４４は、底部４６と周壁４７とを有し、底
部４６には、複数の肉盗み（板厚を薄くした部分）５１及び開口５２を設けてホルダ４０
の材料軽減を図っている。また底部４６の四隅にはパワーモジュール３８ａの一部に当接
してこれを支える受け台５４、５４が設けられ、前後端部には素子固定用の挿通ねじ孔５５が設けられている。 The element housing portion 44 for the power module 38a has a bottom portion 46 and a peripheral wall 47. The bottom portion 46 is provided with a plurality of meat thefts (portions where the plate thickness is reduced) 51 and openings 52 to provide a holder 40.
The material is reduced. Further, at the four corners of the bottom portion 46, cradles 54, 54 that abut and support a part of the power module 38a are provided, and insertion screw holes 55 for fixing elements are provided at the front and rear ends.

前記周壁４７は、素子収容部４４の長手方向となる前後と素子収容部４４の機械室Ｂ側に位置して設けられ、熱交換器Ａ側には形成されておらず、また、機械室Ｂ側に位置する周壁４７には、中央部に切欠き５６が形成されている。そして、この周壁４７の高さは、前記パワーモジュール３８ａの本体５８の高さと受け台５４高さの合計よりも僅かに高く設定されており、素子収容部４４の長手方向となる前後に位置する周壁４７の先端部には、それぞれ対角線上にパワーモジュール３８ａを仮固定するための素子固定爪５７、５７が設けられている。   The peripheral wall 47 is provided in the longitudinal direction of the element accommodating portion 44 and on the machine chamber B side of the element accommodating portion 44, and is not formed on the heat exchanger A side. A cutout 56 is formed in the central portion of the peripheral wall 47 located on the side. The height of the peripheral wall 47 is set to be slightly higher than the sum of the height of the main body 58 of the power module 38 a and the height of the cradle 54, and is positioned before and after the longitudinal direction of the element housing portion 44. Element fixing claws 57 and 57 for temporarily fixing the power module 38a are provided diagonally at the tip of the peripheral wall 47, respectively.

前記ブリッジダイオード３８ｂ用の素子収容部４５は、底部６１と周壁６２とを有し、底部６１には、複数の肉盗み５１が設けられ、ホルダ４０の材料軽減を図っている。前記底部６１の中央部には前記ブリッジダイオード３８ｂの本体６７を固定するための挿通ねじ孔５５が設けられている。   The element housing portion 45 for the bridge diode 38b has a bottom portion 61 and a peripheral wall 62, and a plurality of meat thefts 51 are provided on the bottom portion 61 so as to reduce the material of the holder 40. An insertion screw hole 55 for fixing the main body 67 of the bridge diode 38b is provided at the center of the bottom 61.

前記素子収容部４５の長手方向となる前後に設けられた周壁６２の高さは、ブリッジダイオード３８ｂの本体６７の高さより僅かに高く設定されると共に、その前後の周壁６２の先端部には、それぞれ対角線上にブリッジダイオード３８ｂを仮固定するための素子固定爪５７、５７が設けられている。   The height of the peripheral wall 62 provided in the longitudinal direction of the element housing portion 45 is set to be slightly higher than the height of the main body 67 of the bridge diode 38b, Element fixing claws 57 and 57 for temporarily fixing the bridge diode 38b are provided on the diagonal lines.

また、前記素子収容部４５の短手方向となる左右に設けられた周壁６２には、それらの中央にそれぞれ切欠き６４、６４が形成されている。なお、パワーモジュール３８ａ用の素子収容部４４における前後の周壁４７と、ブリッジダイオード３８ｂ用の素子収容部４５における前後の周壁６２の高さは、同一高さになっている。   In addition, notches 64 and 64 are formed in the centers of the peripheral walls 62 provided on the left and right sides in the short direction of the element housing portion 45, respectively. The front and rear peripheral walls 47 in the element housing portion 44 for the power module 38a and the front and rear peripheral walls 62 in the element housing portion 45 for the bridge diode 38b have the same height.

図６及び図７において、パワーモジュール３８ａの本体５８は、金属製のベースに樹脂部が結合されて形成されており、それの長手方向の両端部にはねじ挿通孔５９、５９が設けられ、また、前記本体５８の一側部には複数のピンｐ、ｐ・・が突出して設けられ、これら複数のピンｐ、ｐ・・は、略直角に折り曲げられている。前記パワーモジュール３８ａは、これらのピンｐ、ｐ・・の位置を機械室Ｂ側にして、本体５８の下面の４隅を前記受け台５４、５４・・に当接載置させる。そして、前記パワーモジュール３８ｂの一部が熱交換器室Ａ側へはみ出した状態で、前記パワーモジュール３８ｂは素子収納部４４へ収納される。   6 and 7, the main body 58 of the power module 38a is formed by bonding a resin part to a metal base, and screw insertion holes 59, 59 are provided at both ends in the longitudinal direction thereof. In addition, a plurality of pins p, p,... Protrude from one side of the main body 58, and the plurality of pins p, p,. The power module 38a places the pins p, p... On the machine room B side and places the four corners of the lower surface of the main body 58 in contact with the cradle 54, 54. The power module 38b is accommodated in the element accommodating portion 44 in a state where a part of the power module 38b protrudes to the heat exchanger chamber A side.

そして、前記ピンｐ、ｐ・・を制御基板３３のピン孔ｎ、ｎ・・に挿入した後、パワーモジュール３８ｂの本体５８を素子固定爪５７、５７に掛けることにより、パワーモジュール３８ａは、ホルダ４０の素子収容部４４に仮固定される。このようにしてパワーモジュール３８ａがホルダ４０へ取り付けられた状態では、パワーモジュール３８ａの本体５８とホルダ４０の素子収容部４４の底部６１との間には、図６に示すように、受け台５４の高さ分の隙間ｔができ、また左右の周壁４７には切欠き５６を形成しているので、これら切欠き５６及び隙間ｔを通してパワーモジュール３８ａの本体５８とホルダ４０との間に空気の流通が可能になり、パワーモジュール３８ａの本体５８における空気との接触面積を拡大できる。   Then, after inserting the pins p, p... Into the pin holes n, n... Of the control board 33, the power module 38a is mounted on the element fixing claws 57, 57 by attaching the main body 58 of the power module 38b to the holder. It is temporarily fixed to 40 element accommodating portions 44. In the state where the power module 38a is attached to the holder 40 in this way, a cradle 54 is provided between the main body 58 of the power module 38a and the bottom 61 of the element accommodating portion 44 of the holder 40 as shown in FIG. Since a notch 56 is formed in the left and right peripheral walls 47, air flows between the main body 58 of the power module 38 a and the holder 40 through the notch 56 and the gap t. Distribution becomes possible and the contact area with the air in the main body 58 of the power module 38a can be expanded.

前記ブリッジダイオード３８ｂの本体６７は、金属製のベースに樹脂部が結合されて形成されており、それの中央部には固定用のねじ挿通孔５９が設けられ、また、前記ブリッジダイオード３８ｂの本体６７の一側部には複数のピンｐ、ｐ・・が突出して設けられ、これら複数のピンｐ、ｐ・・は、略直角に折り曲げられている。   The main body 67 of the bridge diode 38b is formed by bonding a resin portion to a metal base, and a fixing screw insertion hole 59 is provided at the center thereof, and the main body of the bridge diode 38b. A plurality of pins p, p,... Project from one side of 67, and the plurality of pins p, p,.

そして、前記ピンｐ、ｐ・・の位置を機械室Ｂ側にして、本体６７の下面を前記底部６１に当接載置させる。そして、前記ブリッジダイオード３８ｂの一部が熱交換器室Ａ側へはみ出した状態で、このブリッジダイオード３８ｂは素子収納部４５へ収納される。そして、前記ピンｐ、ｐ・・を制御基板３３のピン孔ｎ、ｎ・・に挿入した後、前記ブリッジダイオード３８ｂの本体６７を素子固定爪５７、５７に掛けることにより、前記ブリッジダイオード３８ｂは、ホルダ４０の素子収容部４５に仮固定される。   Then, the position of the pins p, p,. The bridge diode 38b is accommodated in the element accommodating portion 45 in a state where a part of the bridge diode 38b protrudes to the heat exchanger chamber A side. Then, after inserting the pins p, p... Into the pin holes n, n... Of the control board 33, the bridge diode 38 b is formed by hanging the body 67 of the bridge diode 38 b on the element fixing claws 57, 57. The element 40 is temporarily fixed to the element housing 45 of the holder 40.

これらパワーモジュール３８ａとブリッジダイオード３８ｂを含む発熱素子３８が、ホルダ４０を介して制御基板３３に仮固定され、かつ制御基板３３上に他の電気部品が配設された後に、制御基板３３の半田付けが行われる。このとき、制御基板３３の半田面側を下にして半田面側が半田槽へ所定時間浸される。前記各発熱素子３８の本体５８、６７は、半田付け作業時に制御基板３３から離れる方向へ移動しようとするが、各発熱素子３８の本体５８、６７が素子固定爪５７、５７に当接する位置で固定される。   The heating element 38 including the power module 38a and the bridge diode 38b is temporarily fixed to the control board 33 via the holder 40, and other electrical components are disposed on the control board 33, and then soldering of the control board 33 is performed. The attachment is done. At this time, the solder surface side of the control substrate 33 faces downward and the solder surface side is immersed in the solder bath for a predetermined time. The main bodies 58 and 67 of the respective heat generating elements 38 try to move away from the control board 33 during the soldering operation, but at positions where the main bodies 58 and 67 of the respective heat generating elements 38 come into contact with the element fixing claws 57 and 57. Fixed.

前記発熱素子３８は、半田付けされた後、各ねじ挿通孔５５、５５…にねじを挿入してねじ止めすることにより、ホルダ４０を介して制御基板３３へ固定される。その後、ホルダ４０の４つの各素子固定爪５７を切断することにより、制御基板３３の半田付け作業が終了する。   The heat generating element 38 is fixed to the control board 33 via the holder 40 by inserting screws into the screw insertion holes 55, 55. Thereafter, by cutting the four element fixing claws 57 of the holder 40, the soldering operation of the control board 33 is completed.

図８はヒートシンク単体の斜視図、図９は発熱素子とヒートシンクの取付状態を説明する説明図である。図８において、ヒートシンク３９は熱伝導性に優れたアルミニウム等で作られ、平板状のベース７１と、このベース７１に直交して設けられた複数のフィン７２、７２・・とを有して構成されている。前記ベース７１には、電装箱７への取付用の３つのねじ挿通孔７３、７３・・が設けられている。   FIG. 8 is a perspective view of the heat sink alone, and FIG. 9 is an explanatory view for explaining a mounting state of the heat generating element and the heat sink. 8, the heat sink 39 is made of aluminum or the like having excellent thermal conductivity, and includes a flat plate-like base 71 and a plurality of fins 72, 72,. Has been. The base 71 is provided with three screw insertion holes 73, 73... For attachment to the electrical box 7.

次に、ヒートシンク３９は、複数のフィン７２、７２・・を下向きにして反フィン側のベース７１の一面をフランジ３２に当接させ、前記ねじ挿通孔７３、７３・・と取付部６５、６５・・のねじ穴とを合わせ、ねじ（図示せず）をねじ挿通孔７３、７３に通して、取付部６５、６５に止めることにより、電装箱７に取り付けられる。こうすることにより、前記基板収納部２２の左側下部の開口部が前記ベース７１で封鎖され、箱部２１の左開口部２１ｃが距離をおいてフィン７２により覆われる。これにより、電装箱７内の通気性が保たれ、かつ、電装箱７内への雨水の浸入が防止されるものである。   Next, the heat sink 39 has a plurality of fins 72, 72... Facing downward so that one surface of the base 71 on the opposite fin side contacts the flange 32, and the screw insertion holes 73, 73. ... Are attached to the electrical box 7 by matching the screw holes and passing the screws (not shown) through the screw insertion holes 73 and 73 and stopping at the attachment portions 65 and 65. By doing so, the lower left opening of the substrate storage unit 22 is sealed with the base 71, and the left opening 21 c of the box unit 21 is covered with the fins 72 at a distance. Thereby, the air permeability in the electrical box 7 is maintained, and the intrusion of rainwater into the electrical box 7 is prevented.

また、前記制御基板３３を取り付ける取付部としてのボス３６、３６と、ヒートシンク３９を取り付ける取付部６５、６５とは、互いに平行に設けられている。   Further, bosses 36 and 36 as mounting portions for mounting the control board 33 and mounting portions 65 and 65 for mounting the heat sink 39 are provided in parallel to each other.

次いで、前記制御基板３３を上方から基板収納部２２へ取り付ける（図４参照）。この制御基板３３を基板収容部２２へ取り付けることにより、制御基板３３とヒートシンク３９とが、電装箱７へ取り付けられ、かつ、２つの発熱素子３８の本体５８、６７の外表面が同一高さ位置になって水平状態に固定されているので、各発熱素子３８の本体５８、６７の外表面とヒートシンク３９のベース７１の一面とが密接した状態になって固定される。   Next, the control board 33 is attached to the board storage unit 22 from above (see FIG. 4). By attaching the control board 33 to the board housing part 22, the control board 33 and the heat sink 39 are attached to the electrical equipment box 7, and the outer surfaces of the main bodies 58 and 67 of the two heating elements 38 are at the same height position. Therefore, the outer surfaces of the main bodies 58 and 67 of each heat generating element 38 and one surface of the base 71 of the heat sink 39 are fixed in close contact with each other.

このように、各発熱素子３８とヒートシンク３９とが互いに密接することにより、発熱素子３８とヒートシンク３９間の熱伝導が良くなり、発熱素子３８の発熱がヒートシンク３９へ良好に伝わって、発熱素子３８の冷却効果を高めることができる。なお、発熱素子３８の本体５８、６７の外表面とヒートシンク３９のベース７１の一面との間には、熱伝導性を高めるためのシール剤が塗布される。   As described above, the heat generating elements 38 and the heat sink 39 are in close contact with each other, so that the heat conduction between the heat generating elements 38 and the heat sink 39 is improved, and the heat generated by the heat generating elements 38 is well transmitted to the heat sink 39. The cooling effect can be enhanced. Note that a sealant for increasing thermal conductivity is applied between the outer surfaces of the main bodies 58 and 67 of the heat generating element 38 and one surface of the base 71 of the heat sink 39.

以上のように構成された空気調和機の室外機１において、空調運転時に室外送風機９が駆動すると、室外熱交換器８を通って熱交換器室Ａへ取り込まれた外気が、前パネル１５の開口から放出される。このとき、熱交換器室Ａを通過する送風の一部が熱交換器室Ａに配置されたヒートシンク３９に接触し、発熱素子３８の発熱による熱で温度上昇したヒートシンク３９が冷却されるため、発熱素子３８の熱がヒートシンク３９に奪われ、発熱素子３８を冷却することができる。   In the outdoor unit 1 of the air conditioner configured as described above, when the outdoor fan 9 is driven during the air conditioning operation, the outside air taken into the heat exchanger chamber A through the outdoor heat exchanger 8 is transferred to the front panel 15. Released from the opening. At this time, a part of the blast passing through the heat exchanger chamber A comes into contact with the heat sink 39 disposed in the heat exchanger chamber A, and the heat sink 39 whose temperature has been increased by the heat generated by the heat generating element 38 is cooled. The heat of the heating element 38 is taken away by the heat sink 39, and the heating element 38 can be cooled.

また、熱交換器室Ａ内を風が流れることにより、熱交換器室Ａに延出した電装箱７の左開口部２１ｃの周囲が負圧になり、電装箱７内の空気が左開口部２１ｃから熱交換器室Ａに排出され、電装箱７内には、図９の矢印で示すように、機械室Ｂへ入り込んだ空気がその電装箱７の右開口部２１ｂ及び前開口部２１ａから流入し、この流入する外気によって電装箱７内が冷却される。また、外気が前記制御基板３３の右端部と周囲壁３１の間の隙間ｓ（図４参照）から基板収納部２２を経て制御基板３３とパワーモジュール３８ａ間を流れるので、パワーモジュール３８ａが冷却されるとともに、制御基板３３へ熱を伝わりにくくすることができる。   Further, when the wind flows in the heat exchanger chamber A, the surroundings of the left opening 21c of the electrical box 7 extending to the heat exchanger chamber A become negative pressure, and the air in the electrical box 7 becomes the left opening. As shown by the arrow in FIG. 9, the air that has been discharged from the heat exchanger chamber 21c into the heat exchanger chamber A and entered the machine chamber B passes through the right opening portion 21b and the front opening portion 21a of the electric box 7. The electric box 7 is cooled by the inflowing outside air. In addition, since the outside air flows between the control board 33 and the power module 38a through the board housing portion 22 from the gap s (see FIG. 4) between the right end of the control board 33 and the peripheral wall 31, the power module 38a is cooled. In addition, heat can be hardly transmitted to the control board 33.

以上、実施の一形態に基づいて本発明を説明したが、本発明は、これに限定されるものではなく、種々変形が可能である。   Although the present invention has been described based on one embodiment, the present invention is not limited to this, and various modifications are possible.

本発明の実施の一形態を示す室外機の分解斜視図である。It is a disassembled perspective view of the outdoor unit which shows one Embodiment of this invention. 前板を外した状態の室外機の正面図である。It is a front view of the outdoor unit in a state where a front plate is removed. 電装箱の斜視図である。It is a perspective view of an electrical equipment box. 上蓋を外した状態の電装箱の斜視図である。It is a perspective view of the electrical equipment box in the state where the upper lid is removed. ホルダ単体の斜視図である。It is a perspective view of a holder simple substance. ホルダを制御基板へ取り付けた状態を下から見た要部斜視図である。It is the principal part perspective view which looked at the state which attached the holder to the control board from the bottom. ホルダと発熱素子を制御基板へ取り付けた状態を下から見た要部斜視図である。It is the principal part perspective view which looked at the state which attached the holder and the heat generating element to the control board from the bottom. ヒートシンク単体の斜視図である。It is a perspective view of a heat sink alone. 発熱素子とヒートシンクの取付状態を説明する説明図である。It is explanatory drawing explaining the attachment state of a heat generating element and a heat sink. 従来の発熱素子とヒートシンクの取付状態を説明する説明図である。It is explanatory drawing explaining the attachment state of the conventional heat generating element and a heat sink.

符号の説明Explanation of symbols

Ａ 熱交換器室
Ｂ 機械室
１ 室外機
２ 底板
３ 仕切板
４ 圧縮機
７ 電装箱
８ 室外熱交換器（熱交換器）
９ 室外送風機（送風機）
３３ 制御基板
３５ 切欠き
３６ ボス（制御基板の取付部）
３８ 発熱素子
３８ａ パワーモジュール（発熱素子）
３８ｂ ブリッジダイオード（発熱素子）
３９ ヒートシンク
４０ ホルダ
４４ 素子収容部（収容部）
４５ 素子収容部（収容部）
４７ 周壁
５４ 受け台
５６ 切欠き
５７ 素子固定爪
５８ 発熱素子の本体
６２ 周壁
６４ 切欠き
６５ ヒートシンクの取付部
６７ 発熱素子の本体 A Heat exchanger room B Machine room 1 Outdoor unit 2 Bottom plate 3 Partition plate 4 Compressor 7 Electrical box 8 Outdoor heat exchanger (heat exchanger)
9 Outdoor blower (blower)
33 Control board 35 Notch 36 Boss (control board mounting part)
38 Heating element 38a Power module (heating element)
38b Bridge diode (heating element)
39 Heat sink 40 Holder 44 Element housing (housing)
45 Element housing (housing)
47 peripheral wall 54 cradle 56 notch 57 element fixing claw 58 heat generating element main body 62 peripheral wall 64 notch 65 heat sink mounting portion 67 heat generating element main body

Claims (2)

箱体の底部を構成する底板上に仕切板を立設し、この仕切板を境にして圧縮機が配置された機械室と、熱交換器及び送風機が配置された熱交換器室とに箱体内を区画し、前記仕切板の上部には、前記機械室と熱交換器室とに跨って略水平に延びる電装箱が配設され、この電装箱内に発熱素子を搭載した制御基板が収容されている空気調和機の室外機において、 前記電装箱には、前記制御基板を取り付ける取付部と、前記発熱素子の冷却用のヒートシンクを取り付けるヒートシンクの取付部とが互いに平行に設けられ、前記制御基板には前記発熱素子がホルダを介して取り付けられる構成とし、前記ホルダは、前記発熱素子を収容する収納部を有し、この収容部には発熱素子の一部に当接し前記発熱素子と制御基板との間に空気を流す隙間を形成するための受け台が設けられており、且つこの受け台は、発熱素子を収容する収納部の四隅に設けられていることを特徴とする空気調和機の室外機。 A partition plate is erected on the bottom plate that constitutes the bottom of the box, and the box is placed in a machine room in which a compressor is disposed with the partition plate as a boundary, and a heat exchanger chamber in which a heat exchanger and a blower are disposed. An electric box that divides the body and extends substantially horizontally across the machine room and the heat exchanger room is disposed above the partition plate, and a control board on which heating elements are mounted is accommodated in the electric box. In the outdoor unit of an air conditioner, the electrical equipment box is provided with a mounting portion for mounting the control board and a heat sink mounting portion for mounting a heat sink for cooling the heating element in parallel with each other. The substrate is configured such that the heat generating element is attached via a holder, and the holder has a storage portion for storing the heat generating element, and the storage portion contacts a part of the heat generating element and controls the heat generating element. Form a gap to flow air between the board An outdoor unit for an air conditioner , characterized in that a cradle is provided, and the cradles are provided at the four corners of a storage portion for storing a heat generating element . 前記収納部には、発熱素子の周囲を囲む周壁が設けられ、かつ、この周壁の一部には切欠
きが形成されてい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 for an air conditioner according to claim 1, wherein the storage portion is provided with a peripheral wall surrounding the periphery of the heat generating element, and a notch is formed in a part of the peripheral wall. .
JP2004205570A 2003-09-30 2004-07-13 Air conditioner outdoor unit Expired - Fee Related JP4660130B2 (en)

Priority Applications (3)

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JP2004205570A JP4660130B2 (en) 2003-09-30 2004-07-13 Air conditioner outdoor unit
CNB2004100825299A CN1272587C (en) 2003-09-30 2004-09-20 Outdoor machine of air conditioner
KR1020040076724A KR100618491B1 (en) 2003-09-30 2004-09-24 Outdoor unit of air conditioner

Applications Claiming Priority (2)

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JP2003338983 2003-09-30
JP2004205570A JP4660130B2 (en) 2003-09-30 2004-07-13 Air conditioner outdoor unit

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JP4660130B2 true JP4660130B2 (en) 2011-03-30

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KR100618491B1 (en) 2006-08-31
JP2005127691A (en) 2005-05-19
CN1603703A (en) 2005-04-06
CN1272587C (en) 2006-08-30

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