JP2006292312A - Top plate structure of high place-installation type air conditioner - Google Patents

Top plate structure of high place-installation type air conditioner Download PDF

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Publication number
JP2006292312A
JP2006292312A JP2005115994A JP2005115994A JP2006292312A JP 2006292312 A JP2006292312 A JP 2006292312A JP 2005115994 A JP2005115994 A JP 2005115994A JP 2005115994 A JP2005115994 A JP 2005115994A JP 2006292312 A JP2006292312 A JP 2006292312A
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Japan
Prior art keywords
top plate
reinforcing ribs
air conditioner
fan
rib
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JP2005115994A
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Japanese (ja)
Inventor
Keiko Ryu
継紅 劉
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Daikin Industries Ltd
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Daikin Industries Ltd
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Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP2005115994A priority Critical patent/JP2006292312A/en
Priority to US11/884,701 priority patent/US20080159848A1/en
Priority to EP06731409A priority patent/EP1867930A1/en
Priority to CNA200680008956XA priority patent/CN101147031A/en
Priority to PCT/JP2006/307462 priority patent/WO2006112278A1/en
Publication of JP2006292312A publication Critical patent/JP2006292312A/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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/082—Grilles, registers or guards
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers

Abstract

<P>PROBLEM TO BE SOLVED: To provide a top plate structure for a high-place installation type air conditioner, capable of achieving necessary rigidity, strength, vibration characteristics and the like while thinning, including the behavior of a top plate at driving a fan. <P>SOLUTION: The air conditioner comprises a body casing 3 for storing a fan 5, a fan motor 9, a heat exchanger 4 and the like, and a top plate 32 as the top face of the body casing 3 for suspending and supporting the fan 5, the fan motor 9, the heat exchanger 4 and the like, the top plate including a plurality of reinforcing ribs extending radially from an approximately center where the fan motor 9 is supported toward a radial circumferential part where the heat exchanger 4 is supported. The plurality of reinforcing ribs are formed of reinforcing ribs 32a' protruded to the surface side of the top plate 32 and reinforcing ribs 32a protruded to the reverse side thereof, whereby the rigidity and the like are increased. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本願発明は、高所設置型空気調和機の天板構造に関するものである。   The present invention relates to a top plate structure of an altitude installation type air conditioner.

天井埋込型又は天井吊設型等の高所設置型の空気調和機（室内機ユニット）は、例えばカセット型の本体ケーシングの天面部に金属製の天板を備え、該天板に対して、熱交換器、ファンおよびファンモータなどの重量物を吊設支持した上で、本体ケーシングを吊り下げボルト等で吊り下げて天井部内に埋設するか、又は天井部下面に吊設することにより接地されるようになっている。   An altitude installation type air conditioner (indoor unit) such as a ceiling-embedded type or a ceiling-suspended type includes, for example, a metal top plate on the top surface of a cassette-type main body casing, After suspending and supporting heavy objects such as heat exchangers, fans and fan motors, the main body casing is suspended with suspension bolts and embedded in the ceiling, or suspended on the bottom of the ceiling. It has come to be.

このような高所設置型空気調和機の中の天井埋込型空気調和機の一例を、図２５〜図２７に示す。   An example of the ceiling-embedded air conditioner in such an altitude installation type air conditioner is shown in FIGS.

この空気調和機は、同図２５〜図２７に示すように、天井Ｃに形成された開口部７の上方に空気調和機本体１を配置し、該空気調和機本体１に対して上記開口部７を覆う化粧パネル２を取り付けて構成されており、上記空気調和機本体１のカセット型の本体ケーシング３内には、略環状の熱交換器４と、該熱交換器４の中心部にあって吸込側を下向きとし、かつ空気吹出側を上記熱交換器４の側面方向としたファン（羽根車）５およびファンモータ９と、上記ファン５の吸込側に配置された合成樹脂製のベルマウス６が配設されている。   In this air conditioner, as shown in FIGS. 25 to 27, the air conditioner body 1 is disposed above the opening 7 formed in the ceiling C, and the opening is formed with respect to the air conditioner body 1. A decorative panel 2 covering 7 is attached. In the cassette-type main body casing 3 of the air conditioner main body 1, there is a substantially annular heat exchanger 4 and a central portion of the heat exchanger 4. The fan (impeller) 5 and the fan motor 9 with the suction side facing downward and the air blowing side facing the side of the heat exchanger 4, and a synthetic resin bell mouth arranged on the suction side of the fan 5 6 is disposed.

この場合、ファン５は例えばハブ５ａとシュラウド５ｃとの間に多数枚のブレード５ｂ，５ｂ・・・を備えた遠心ファンにより構成されている。   In this case, the fan 5 is constituted by a centrifugal fan provided with a plurality of blades 5b, 5b,... Between the hub 5a and the shroud 5c, for example.

なお、符号８は上記熱交換器４の下方に配置されたドレンパン、１０は上記熱交換器４の外周側に形成された空気吹出通路である。   In addition, the code | symbol 8 is the drain pan arrange | positioned under the said heat exchanger 4, 10 is the air blowing path formed in the outer peripheral side of the said heat exchanger 4. FIG.

上記カセット型の本体ケーシング３は、例えば略六角形形状とされており、断熱材からなる側壁３１と、該側壁３１の上部を覆う天板３２とからなっている。   The cassette-type main body casing 3 has, for example, a substantially hexagonal shape, and includes a side wall 31 made of a heat insulating material and a top plate 32 that covers the top of the side wall 31.

上記熱交換器４の両開放端には各々管板１１，１１が設けられ、これら各管板１１，１１間は、所定の仕切り板１２により連結されている。   Tube plates 11, 11 are provided at both open ends of the heat exchanger 4, and the tube plates 11, 11 are connected by a predetermined partition plate 12.

上記本体ケーシング３の天板３２、上記管板１１，１１、上記仕切り板１２および上記ベルマウス６の下面に取り付けられるスイッチボックス１３は、共に板金製品により構成されている。そして、上記天板３２と上記スイッチボックス１３は、例えば図２６に示すように、上記仕切り板１２の上下両端部に対してビス止めされている。   The top plate 32 of the main body casing 3, the tube plates 11, 11, the partition plate 12, and the switch box 13 attached to the lower surface of the bell mouth 6 are all made of sheet metal products. The top plate 32 and the switch box 13 are screwed to the upper and lower end portions of the partition plate 12 as shown in FIG. 26, for example.

一方、上記ベルマウス６には、上記スイッチボックス１３を収納する凹部１４が形成されており、該凹部１４の天面１４ａには、上記仕切り板１２の下端部に形成されたスイッチボックス結合部１５が臨まされる開口１６が形成されている。   On the other hand, the bell mouth 6 is formed with a recess 14 for accommodating the switch box 13, and a switch box coupling portion 15 formed at the lower end of the partition plate 12 is formed on the top surface 14 a of the recess 14. Is formed.

また、上記仕切り板１２の上端には、その両端部に位置して上記天板３２への結合部となる取付片１７，１７が一体に突設されており、該取付片１７は、上記天板３２に対してビス１８により下方から固着される。   Further, at the upper end of the partition plate 12, mounting pieces 17, 17 that are located at both ends of the partition plate 12 and serve as coupling portions to the top plate 32 are integrally projected. The plate 32 is fixed from below with screws 18.

また、上記仕切り板１２の下端には、その両端部に位置して上記管板１１，１１の下端への結合部となる取付片１９，１９が一体に突設され、その中間部に位置して上記スイッチボックス１３への結合部となる取付片１５が溶接により固着されている。上記取付片１９は、上記管板１１に対してビス２０により下方から固着され、上記取付片１５は、上記仕切り板１２への結合部となるＬ字状の基部１５ａと、該基部１５ａの先端から下向きに一体に延設された取付部１５ｂとからなっており、該取付部１５ｂを上記開口１６から上記凹部１４内に臨ませた状態でスイッチボックス１３の天面１３ａに対してビス２１により下方から固着されている。   Also, at the lower end of the partition plate 12, mounting pieces 19 and 19 that are located at both end portions thereof and serve as coupling portions to the lower ends of the tube plates 11 and 11 are integrally projected and positioned at the intermediate portion thereof. An attachment piece 15 which is a connecting portion to the switch box 13 is fixed by welding. The mounting piece 19 is fixed to the tube plate 11 with screws 20 from below, and the mounting piece 15 includes an L-shaped base portion 15a serving as a coupling portion to the partition plate 12, and a distal end of the base portion 15a. And a mounting portion 15b integrally extending downward from the opening 16 with the screw 21 facing the top surface 13a of the switch box 13 with the mounting portion 15b facing the recess 14 from the opening 16. It is fixed from below.

また、符号２２はドレンポンプ、２３はフロートスイッチ、２４はドレンポンプ２２が配置されるドレンポンプ収容部、２５はドレンポンプ収容部を仕切る仕切り板、２６は上記スイッチボックス１３の蓋カバーである。   Reference numeral 22 is a drain pump, 23 is a float switch, 24 is a drain pump accommodating portion in which the drain pump 22 is disposed, 25 is a partition plate for partitioning the drain pump accommodating portion, and 26 is a lid cover of the switch box 13.

ところで、上記天板３２は、上記空気調和機１の本体ケーシング３の形状に対応して略六角形状に形成され、その外周には、同本体ケーシング３の上端部外周側に冠合させるための鉤状の縁部３２ｃが設けられている。   By the way, the top plate 32 is formed in a substantially hexagonal shape corresponding to the shape of the main body casing 3 of the air conditioner 1, and the outer periphery thereof is meshed with the outer peripheral side of the upper end portion of the main body casing 3. A bowl-shaped edge 32c is provided.

また、該天板３２は、上述したファン５およびファンモータ９が支持される略中央部３３から略環状の熱交換器４が支持される半径方向外周部にかけて、放射状に延びる下方側に凹んだ所定幅、所定深さの複数本の主補強リブ３２ａ，３２ａ・・・が設けられている。そして、これら主補強リブ３２ａ，３２ａ・・・外周側の熱交換器支持部には、下方への凹み深さが小さくなった段差部３２ｂ，３２ｂ・・・が形成されている。   The top plate 32 is recessed downward from the substantially central portion 33 where the fan 5 and the fan motor 9 are supported to the radially outer peripheral portion where the substantially annular heat exchanger 4 is supported. A plurality of main reinforcing ribs 32a, 32a,... Having a predetermined width and a predetermined depth are provided. The main reinforcing ribs 32a, 32a,... On the outer peripheral side are formed with stepped portions 32b, 32b,.

そして、これら主補強リブ３２ａ，３２ａ・・・によって天板３２の基本的な剛性、強度、たわみ特性、振動特性を必要なレベルに設定している。   The basic rigidity, strength, deflection characteristics, and vibration characteristics of the top plate 32 are set to necessary levels by these main reinforcing ribs 32a, 32a.

また、天板３２の外周側では、主補強リブ３２ａ，３２ａ・・・相互の間隔が広くなり、その分剛性、強度等が不足する。   Moreover, the space | interval of main reinforcement rib 32a, 32a ... mutual becomes wide in the outer peripheral side of the top plate 32, and rigidity, intensity | strength, etc. are insufficient for it.

そこで、それら複数本の主補強リブ３２ａ，３２ａ・・・の間には、例えば図２７に示すように、想定される荷重の大きさ等に対応して所望の形状、大きさの複数の副補強リブ３４，３４・・・が隣接する形で設けられている。   Therefore, between the plurality of main reinforcing ribs 32a, 32a,..., As shown in FIG. Reinforcing ribs 34, 34... Are provided adjacent to each other.

そして、これらによって、設計時、天板３２の静たわみを一定値以下にし、またファンモータ９回転による共振を避けるため、天板３２の１次固有振動数を一定値以上に維持するようにしていた。   Thus, at the time of design, the static deflection of the top plate 32 is kept below a certain value, and in order to avoid resonance due to the rotation of the fan motor 9, the primary natural frequency of the top plate 32 is kept above a certain value. It was.

また、上記天板３２には、上記略中央部３３のファン５およびファンモータ９支持部にも、内側に平面略三角形状の補強リブ３２ａが設けられている。そして、それによりファン５およびファンモータ９支持部の剛性および強度、たわみ特性、振動特性を向上改善するようにしていた。   Further, the top plate 32 is provided with reinforcing ribs 32a having a substantially triangular plane on the inner side of the fan 5 and fan motor 9 support portions of the substantially central portion 33. As a result, the rigidity and strength, deflection characteristics, and vibration characteristics of the fan 5 and fan motor 9 support portions are improved and improved.

該平面略三角形状の補強リブ３３ａによって補強されたファン５およびファンモータ９支持部には、それぞれその底辺および頂点の各コーナ部位置に円形の凹溝部が設けられ、該凹溝部の中心軸部分に３つのファンモータ９の取付部ａ，ｂ，ｃが形成されている。そして、該ファンモータ取付部ａ，ｂ，ｃに対して吸振性のあるマウント部材１１，１１，１１および取付ブラケット９ｂを介してファンモータ９が吊設固定されている。また、これにより上記ファン５もモータ軸９ａを介して回転可能に支持されている。   The fan 5 and fan motor 9 support portions reinforced by the plane substantially triangular reinforcing ribs 33a are provided with circular concave grooves at the corners of the bottom and apex, respectively, and the central axis portion of the concave grooves The mounting portions a, b, and c of the three fan motors 9 are formed. The fan motor 9 is suspended and fixed via mount members 11, 11, 11 and a mounting bracket 9 b having a vibration absorbing property with respect to the fan motor mounting portions a, b, c. Thereby, the fan 5 is also rotatably supported via the motor shaft 9a.

特開平１１−２０１４９６号公報（明細書第１−３頁、図１−３）Japanese Patent Laid-Open No. 11-201496 (Specification, page 1-3, FIG. 1-3)

ところで、最近では各種の観点から、上記のような空気調和機のコストダウンを図ることが検討されており、上記天板３２もその例外ではない。   By the way, recently, from various viewpoints, it has been studied to reduce the cost of the air conditioner as described above, and the top plate 32 is no exception.

上記天板３２の場合、そのコストダウンの手法として、例えば現行（例えば０．８ｍｍ）のものよりも全体の板厚を薄くし（例えば０．７〜０．６ｍｍ程度に）、材料費を安くするとともに、リブ等形成のための加工性を向上させることが考えられる。   In the case of the top plate 32, as a method for reducing the cost, for example, the entire plate thickness is made thinner (for example, about 0.7 to 0.6 mm) than the current one (for example, 0.8 mm), and the material cost is reduced. In addition, it is conceivable to improve workability for forming ribs and the like.

しかし、その場合に問題となるのが、剛性や強度の低下であり、さらにはファン駆動時の振動対策である。   However, the problem in that case is a decrease in rigidity and strength, and further measures against vibrations when the fan is driven.

板厚を現行のものよりも薄くすれば材料費が低減され、変形も容易になるのでプレス成形時の加圧力も小さくて済み、加工性は向上する。   If the plate thickness is made thinner than the current thickness, the material cost is reduced and deformation is facilitated, so that the pressurizing force at the time of press molding can be reduced and the workability is improved.

しかし、実際に薄肉化して見ると、上記従来の構造の場合、静たわみ量が増大するとともにファンモータ９の回転に伴う１次固有振動数の低下により、上記従来品レベルの設計基準を満たすことができなくなった。   However, in view of actual thinning, in the case of the above conventional structure, the amount of static deflection increases and the primary natural frequency accompanying the rotation of the fan motor 9 decreases, thereby satisfying the design standard of the above conventional product level. Is no longer possible.

本願発明は、以上のような事情に鑑み、上記ファン駆動時における天板の挙動を含めて、薄肉化して、なおかつ必要な剛性、強度、振動特性を得ることができる高所設置型空気調和機の天板構造を提供することを目的とするものである。   In view of the circumstances as described above, the present invention is an altitude installation type air conditioner that can be thinned and include necessary rigidity, strength, and vibration characteristics including the behavior of the top plate when the fan is driven. The object is to provide a top plate structure.

本願発明は、上記の目的を達成するために、次のような課題解決手段を備えて構成されている。   In order to achieve the above object, the present invention is configured with the following problem solving means.

（１） 第１の課題解決手段
この発明の第１の課題解決手段は、ファン５およびファンモータ９、熱交換器４等を収納する本体ケーシング３と、該本体ケーシング３の天面にあって、上記ファン５およびファンモータ９、熱交換器４等を吊設支持する天板３２とを備え、上記天板３２には、上記ファンモータ９が支持される略中央部付近から上記熱交換器４が支持される半径方向外周部にかけて、放射状に延びる複数本の補強リブを設けてなる高所設置型空気調和機であって、上記複数本の補強リブは、上記天板３２の表面側に突出する補強リブ３２ａ′，３２ａ′・・・と裏面側に突出する補強リブ３２ａ，３２ａ・・・とからなっていることを特徴としている。 (1) First Problem Solving Means The first problem solving means of the present invention is the main body casing 3 that houses the fan 5, the fan motor 9, the heat exchanger 4 and the like, and the top surface of the main body casing 3. The fan 5, the fan motor 9, the heat exchanger 4 and the like are suspended and supported, and the top plate 32 has the heat exchanger from the substantially central portion where the fan motor 9 is supported. 4 is a height-installation type air conditioner provided with a plurality of reinforcing ribs extending radially toward the outer peripheral portion in the radial direction where 4 is supported, and the plurality of reinforcing ribs are provided on the surface side of the top plate 32. It is characterized by comprising reinforcing ribs 32a ', 32a' ... projecting and reinforcing ribs 32a, 32a ... projecting on the back side.

このような天板構造によると、仮に従来よりも天板３２の板厚を薄くしたとしても、複数本の補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・の本数および断面形状（絞り形状）、深さ、幅などを最適に調整、設定することにより、剛性、強度、たわみ特性、振動特性等を必要なレベルに改善することができるようになる。特に、以上の構成では、補強リブ部分が、天板３２の表面側と裏面側の両方向に突出する構造としたことにより、表裏面両方向間での縦壁高さ寸法が略２倍に拡大されることから、撓みに対する剛性が大きく向上する。   According to such a top plate structure, even if the thickness of the top plate 32 is made thinner than before, the number and the cross-sectional shape of the plurality of reinforcing ribs 32a ', 32a' ..., 32a, 32a ... By optimally adjusting and setting the (diaphragm shape), depth, width, etc., the rigidity, strength, deflection characteristics, vibration characteristics, etc. can be improved to the required levels. In particular, in the above configuration, the height of the vertical wall between the front and back surfaces is substantially doubled by the structure in which the reinforcing rib portions protrude in both the front and back surfaces of the top plate 32. Therefore, the rigidity against bending is greatly improved.

その結果、板厚を薄くでき、かつ加工性が向上する分、製品コストの削減が可能となる。   As a result, it is possible to reduce the product cost by reducing the plate thickness and improving the workability.

（２） 第２の課題解決手段
この発明の第２の課題解決手段は、上記第１の課題解決手段の構成において、天板３２の表面側に突出する補強リブ３２ａ′，３２ａ′・・・と裏面側に突出する補強リブ３２ａ，３２ａ・・・とは、周方向に交互に配設されていることを特徴としている。 (2) Second Problem Solving Means The second problem solving means of the present invention is the configuration of the first problem solving means described above, wherein the reinforcing ribs 32a ′, 32a ′,. And the reinforcing ribs 32a, 32a,... Protruding to the back surface side are alternately arranged in the circumferential direction.

このような構成によると、天板３２の全体に亘ってバランス良く支持剛性をアップすることができ、最大たわみ量を均等に低減することが可能となる。   According to such a configuration, the support rigidity can be improved in a well-balanced manner over the entire top plate 32, and the maximum deflection amount can be reduced evenly.

（３） 第３の課題解決手段
この発明の第３の課題解決手段は、上記第１又は第２の課題解決手段の構成において、複数本の補強リブは、長さの長い主補強リブ３２ａ，３２ａ・・・と該主補強リブ３２ａ，３２ａ・・・の間に設けられた長さの短かい副補強リブ３４，３４・・・とからなり、主補強リブ３２ａ，３２ａ・・・が天板３２の表面側又は裏面側の何れか一方面側に突出し、副補強リブ３４，３４・・・が、その逆面側に突出していることを特徴としている。 (3) Third Problem Solving Means According to a third problem solving means of the present invention, in the configuration of the first or second problem solving means, the plurality of reinforcing ribs are long main reinforcing ribs 32a, 32a, and the main reinforcing ribs 32a, 32a,..., And the short reinforcing sub-ribs 34, 34,. The sub-reinforcing ribs 34, 34,... Protrude to either the front side or the back side of the plate 32, and the reverse reinforcing ribs 34, 34.

上記第１又は第２の課題解決手段と同様の作用効果は、このような副補強リブ３４，３４・・・を有する構成の場合においても同様に実現することができ、そのようにした場合、天板３２の全体に亘ってバランス良く支持剛性をアップすることができ、最大たわみ量を均等に低減することが可能となる。   The same effects as those of the first or second problem solving means can be realized in the same manner even in the case of such a configuration having the auxiliary reinforcing ribs 34, 34. The support rigidity can be increased in a well-balanced manner over the entire top plate 32, and the maximum deflection amount can be reduced evenly.

（４） 第４の課題解決手段
この発明の第４の課題解決手段は、上記第１，第２又は第３の課題解決手段の構成において、各補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・、３４，３４・・・における長手方向の深さを、両端部側では浅く、それらの間では深くなるようにしたことを特徴としている。 (4) Fourth Problem Solving Means According to a fourth problem solving means of the present invention, the reinforcing ribs 32a ′, 32a ′,. , 32a..., 34, 34... Is characterized in that the depth in the longitudinal direction is shallow at both ends and deeper between them.

このように、各補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・、３４，３４・・・における長手方向の深さを、両端部側では浅く、それらの間では深くなるようにした場合、最大たわみ量を一層有効に低減することができるとともに、さらに共振回転数が向上し、材料削減による天板のコストダウンがより一層期待できる。   .., 32a, 32a..., 34, 34... In the longitudinal direction is shallow at both ends and deeper between them. In this case, the maximum deflection amount can be more effectively reduced, the resonance speed can be further improved, and the cost of the top plate can be further reduced by reducing the material.

（５） 第５の課題解決手段
この発明の第５の課題解決手段は、上記第１，第２，第３又は第４の課題解決手段の構成において、天板天板３２の板厚を、０．６ｍｍ〜０．７ｍｍの範囲に設定したことを特徴としている。 (5) Fifth Problem Solving Means A fifth problem solving means of the present invention is the configuration of the first, second, third or fourth problem solving means, wherein the thickness of the top plate top plate 32 is set as follows: It is characterized by being set in the range of 0.6 mm to 0.7 mm.

天板３２の板厚は、薄いほど材料コストは低下し、プレス成形も容易になる。   The thinner the top plate 32, the lower the material cost and the easier the press molding.

しかし、逆に強度、剛性は低下し、たわみ特性、振動特性は悪化する。これを補うのに、上記構成の補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・、３４，３４・・・は有効であるが、やはり一定の板厚は必要である。   However, on the contrary, the strength and rigidity are lowered, and the deflection characteristics and the vibration characteristics are deteriorated. In order to compensate for this, the reinforcing ribs 32a ', 32a' ..., 32a, 32a ..., 34, 34 ... of the above configuration are effective, but a certain plate thickness is still necessary.

上記第１〜第４の各課題解決手段の構成を採用した高所設置型空気調和機の天板構造によると、上記天板３２の板厚を、従来の０．８ｍｍよりも薄い０．６ｍｍ〜０．７ｍｍの範囲まで薄くすることができ、そのように構成した場合にも十分な支持剛性を確保することができる。したがって、材料削減による有効な天板のコストダウンが期待できる。   According to the top plate structure of an altitude installation type air conditioner adopting the configuration of each of the first to fourth problem solving means, the thickness of the top plate 32 is 0.6 mm which is thinner than the conventional 0.8 mm. The thickness can be reduced to a range of ˜0.7 mm, and sufficient support rigidity can be ensured even in such a configuration. Therefore, the cost reduction of the effective top plate by material reduction can be expected.

つまり、この０．６ｍｍ〜０．７ｍｍの板厚レベルが、従来の製品の板厚および上述の補強リブの補強効果との関係を考慮して、材料コストの低減、加工性の向上、必要な品質性能の確保を図ることができる適度な板厚の範囲である。   In other words, the plate thickness level of 0.6 mm to 0.7 mm takes into consideration the relationship between the plate thickness of the conventional product and the reinforcing effect of the above-mentioned reinforcing ribs, reducing the material cost, improving the workability, and necessary. It is within a range of an appropriate plate thickness that can ensure quality performance.

（６） 第６の課題解決手段
この発明の第６の課題解決手段は、上記第１，第２，第３，第４又は第５の課題解決手段の構成において、各補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・、３４，３４・・・の深さが、８．０ｍｍ〜１０．０ｍｍであることを特徴としている。 (6) Sixth Problem Solving Means Sixth problem solving means of the present invention is the configuration of the first, second, third, fourth or fifth problem solving means, wherein each of the reinforcing ribs 32a 'and 32a. ′..., 32a, 32a..., 34, 34.

従来から、一般に天板の最大たわみを１．３１ｍｍ以下に抑え、共振回転数を７４２．０ｒｐｍ以上に保持することが設計基準として要求されている。このような設計基準を満たすことと、補強リブの深さに対する天板の静動特性のロバスト性を保持することとを総合的に考慮すると、補強リブの深さは８．０ｍｍ〜１０．０ｍｍが適当である。   Conventionally, it has been generally required as a design standard that the maximum deflection of the top plate is suppressed to 1.31 mm or less and the resonance rotational speed is maintained at 742.0 rpm or more. Considering comprehensively satisfying such a design standard and maintaining the robustness of the static characteristics of the top plate with respect to the depth of the reinforcing rib, the depth of the reinforcing rib is 8.0 mm to 10.0 mm. Is appropriate.

以上の結果、本願発明の高所設置型空気調和機の天板構造によると、天板の薄肉化、低コスト化を図りながら、その安定した支持剛性、支持強度、低騒音性能を実現することができる。   As a result of the above, according to the top plate structure of the high altitude installation type air conditioner of the present invention, it is possible to achieve stable support rigidity, support strength, and low noise performance while reducing the thickness and cost of the top plate. Can do.

（最良の実施の形態１）
図１〜図６は、本願発明の最良の実施の形態１に係る高所設置型空気調和機の天板の構造を示している。 (Best Embodiment 1)
FIGS. 1-6 has shown the structure of the top plate of the high place installation type air conditioner based on the best Embodiment 1 of this invention.

この最良の実施の形態１における天板３２は、すでに述べた図２５〜図２７に示した従来例の場合と略同様の天井埋込型空気調和機（室内機ユニット）の本体ケーシング３に適用するに最適なものとして構成されている。   The top plate 32 in the best embodiment 1 is applied to the main body casing 3 of the ceiling-embedded air conditioner (indoor unit) that is substantially the same as that of the conventional example shown in FIGS. It is configured as the best one to do.

そして、図４に示すように、その板厚Ｄ4は従来のもの０．８ｍｍよりも薄く０．７ｍｍ程度に形成されているとともに、その形状は、例えば図１および図２示すように、同空気調和機のカセット型本体ケーシング３の形状に対応して略六角形状に形成され、その外周には、同本体ケーシング３の上端部外周側に冠合させるための鉤状の縁部３２ｃが設けられている。 Then, as shown in FIG. 4, with its thickness D 4 is formed on the thin 0.7mm about than 0.8mm conventional, the shape, for example as shown FIG. 1 and FIG. 2, the Corresponding to the shape of the cassette-type main body casing 3 of the air conditioner, it is formed in a substantially hexagonal shape, and on the outer periphery thereof, a bowl-shaped edge portion 32c for engaging with the outer peripheral side of the upper end portion of the main body casing 3 is provided. It has been.

また、該天板３２には、図２５〜図２７のものと同様の構成のファン５およびファンモータ９が支持される略中央部３３付近から略環状の熱交換器４が支持される半径方向外周部にかけて、放射状に延びる断面が逆台形状で、底面の幅がＷ1、上端側の幅がＷ2、深さがＤ2、傾斜角がθ2の表裏両面側に交互に突出した２種の複数本の補強リブ３２ａ，３２ａ・・・、３２ａ′，３２ａ′・・・が設けられている。そして、それら補強リブ３２ａ，３２ａ・・・、３２ａ′，３２ａ′・・・の内の補強リブ３２ａ，３２ａ・・・の外周端側の熱交換器支持部には、下方への凹み深さＤ3が上記Ｄ2よりも所定寸法だけ小さくなった段差部３２ｂ，３２ｂ・・・が形成されている。 Further, the top plate 32 has a radial direction in which the substantially annular heat exchanger 4 is supported from the vicinity of the substantially central portion 33 where the fan 5 and the fan motor 9 having the same configuration as those in FIGS. 25 to 27 are supported. to the outer portion, in cross section inverted trapezoidal shape extending radially, a width W 1 of the bottom surface, a width W 2, the depth of the upper end side protrudes alternately on both sides side of D 2, the inclination angle theta 2 2 A plurality of kinds of reinforcing ribs 32a, 32a..., 32a ′, 32a ′. .. Of the reinforcing ribs 32a, 32a..., 32a ′, 32a ′. Steps 32b, 32b... In which D 3 is smaller than D 2 by a predetermined dimension are formed.

また、上記天板３２には、上記略中央部３３のファン５およびファンモータ９支持部にも、深さＤ1の補強リブ３３ａが設けられている（Ｄ1＝Ｄ2）。該補強リブ３３ａは、３点および４点支持が可能な５ケ所のファンモータ支持部ａ〜ｅの各々間に入り込み、内接する形で配設されている。 Further, the top plate 32, the fans 5 and the fan motor 9 supporting portion of the substantially central portion 33, the reinforcing rib 33a of a depth D 1 is provided (D 1 = D 2). The reinforcing ribs 33a are arranged so as to enter between the five fan motor support portions a to e that can support three and four points and to be inscribed therein.

そして、それによりファン５およびファンモータ９支持部の剛性および強度、たわみ特性、振動特性を有効に向上改善するようにしている。   As a result, the rigidity and strength, deflection characteristics, and vibration characteristics of the fan 5 and fan motor 9 support portions are effectively improved and improved.

また、同構成において、図１に示す如く、従来のものと同様にして、熱交換器４、ファン５およびファンモータ９等の重量物が取り付けられる。   In the same configuration, as shown in FIG. 1, heavy objects such as the heat exchanger 4, the fan 5, and the fan motor 9 are attached in the same manner as the conventional one.

以上のように、本実施の形態の構成では、天板３２の上記ファンモータ９が支持される略中央部３３付近から上記熱交換器４が支持される半径方向外周部にかけて、放射状に延びる複数本の補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・が設けられており、しかも該複数本の補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・は、上記天板３２の表面側に突出する補強リブ３２ａ′，３２ａ′・・・と裏面側に突出する補強リブ３２ａ，３２ａ・・・とからなっている。   As described above, in the configuration of the present embodiment, a plurality of pieces extending radially from the vicinity of the substantially central portion 33 where the fan motor 9 of the top plate 32 is supported to the radially outer peripheral portion where the heat exchanger 4 is supported. Are provided with a plurality of reinforcing ribs 32a ', 32a' ..., 32a, 32a ..., and the plurality of reinforcing ribs 32a ', 32a' ..., 32a, 32a,. The reinforcing ribs 32a ', 32a' ... projecting to the front surface side of the top plate 32 and the reinforcing ribs 32a, 32a ... projecting to the back surface side.

このような天板構造によると、仮に従来よりも天板３２の板厚を薄くしたとしても、複数本の補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・の本数および断面形状（絞り形状）、深さ、幅などを広い範囲で最適に調整、設定することにより、剛性、強度、たわみ特性、振動特性等を必要なレベルに改善することができるようになる。特に、上記の場合、補強リブ部分が天板３２の表面側と裏面側の両方向に突出する構造としたことにより、表裏面両方向間での縦壁高さ寸法が略２倍に拡大されることから、撓みに対する剛性が大きく向上する。   According to such a top plate structure, even if the thickness of the top plate 32 is made thinner than before, the number and the cross-sectional shape of the plurality of reinforcing ribs 32a ', 32a' ..., 32a, 32a ... By optimally adjusting and setting (diaphragm shape), depth, width, etc. in a wide range, the rigidity, strength, deflection characteristics, vibration characteristics, etc. can be improved to the required levels. In particular, in the above case, the height of the vertical wall between both the front and back surfaces is increased approximately twice by adopting a structure in which the reinforcing rib portion protrudes in both the front side and the back side. Therefore, the rigidity against bending is greatly improved.

その結果、板厚自体を薄くでき、加工性が向上する分、製品コストの削減が可能となる。   As a result, the plate thickness itself can be reduced, and the product cost can be reduced by improving the workability.

しかも上記天板３２の表面側に突出する補強リブ３２ａ′，３２ａ′・・・と裏面側に突出する補強リブ３２ａ，３２ａ・・・とは、周方向に交互に配設されている。   Moreover, the reinforcing ribs 32a ′, 32a ′... Projecting to the front surface side of the top plate 32 and the reinforcing ribs 32a, 32a... Projecting to the back surface side are alternately arranged in the circumferential direction.

このような構成によると、天板３２の全体に亘って、バランス良く支持剛性をアップすることができ、最大たわみ量を全体に亘って均等に低減することが可能となる。   According to such a configuration, the support rigidity can be improved in a well-balanced manner over the entire top plate 32, and the maximum deflection amount can be evenly reduced over the entire surface.

そして、上記各補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・における長手方向（放射方向）の深さｈを、例えば図６に示すように、両端部側では浅く、それらの間では深くなるようにしている（ｈ1＜ｈ2）。 .., 32a, 32a... In the longitudinal direction (radial direction), for example, as shown in FIG. It is made deeper between them (h 1 <h 2 ).

このように、各補強リブ３２ａ，３２ａ・・・、３２ａ′，３２ａ′・・・における長手方向の深さを、両端部側では浅く、それらの間では深くなるようにした場合、最大たわみ量を一層有効に低減することができるとともに、さらに共振回転数が向上し、材料削減による天板３２のコストダウンがより一層期待できる。   As described above, when the longitudinal depth of each of the reinforcing ribs 32a, 32a,..., 32a ′, 32a ′,. Can be more effectively reduced, the resonance rotational speed is further improved, and the cost of the top plate 32 can be further reduced by reducing the material.

また、以上の構成では、上記天板３２の板厚を、０．６ｍｍ〜０．７ｍｍの範囲に設定している。   Moreover, in the above structure, the plate | board thickness of the said top plate 32 is set to the range of 0.6 mm-0.7 mm.

天板３２の板厚は、薄いほど材料コストは低下し、プレス成形も容易になる。   The thinner the top plate 32, the lower the material cost and the easier the press molding.

しかし、逆に強度、剛性は低下し、たわみ特性、振動特性は悪化する。これを補うのに、上記のような構成の補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・は有効であるが、やはり一定レベルの板厚は必要である。   However, on the contrary, the strength and rigidity are lowered, and the deflection characteristics and the vibration characteristics are deteriorated. In order to compensate for this, the reinforcing ribs 32a ′, 32a ′,..., 32a, 32a... Configured as described above are effective, but a certain level of plate thickness is still necessary.

このような観点から種々実験した結果によると、上記のような構成の補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・を採用した天板構造によると、上記天板３２の板厚を０．６ｍｍ〜０．７ｍｍの範囲まで薄くすることができ、その場合にも十分な支持剛性実現し、安定した振動特性を確保することができた。したがって、材料削減による有効な天板３２のコストダウンが期待できる。   According to the results of various experiments from this point of view, according to the top plate structure employing the reinforcing ribs 32a ′, 32a ′,..., 32a, 32a. The thickness could be reduced to a range of 0.6 mm to 0.7 mm. In that case, sufficient support rigidity was realized, and stable vibration characteristics could be secured. Therefore, cost reduction of the effective top plate 32 by material reduction can be expected.

つまり、これらの板厚レベルが、従来の製品の板厚および上述の補強リブの補強効果との関係を考慮して、材料コストの低減、加工性の向上、必要な品質性能の確保を図ることができる適度な板厚の範囲である。   In other words, these plate thickness levels take into consideration the relationship between the plate thickness of conventional products and the reinforcing effect of the above-mentioned reinforcing ribs, to reduce material costs, improve workability, and ensure necessary quality performance. This is the range of the appropriate plate thickness.

これらの結果、以上の実施の形態の高所設置型空気調和機の天板構造によると、天板の薄肉化、低コスト化を図りながら、その安定した支持剛性、支持強度、低騒音性能を実現することができるようになる。   As a result, according to the top plate structure of the air conditioner of the above-described embodiment, the stable support rigidity, support strength, and low noise performance can be achieved while reducing the thickness and cost of the top plate. Can be realized.

（実験例）
今、以上のような天板の表裏面両方向に突出した構成の放射状の補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・の実際の効果を確認するために、次のような解析実験を行った。 (Experimental example)
Now, in order to confirm the actual effect of the radial reinforcing ribs 32a ', 32a' ..., 32a, 32a ... having a structure protruding in both the front and back surfaces of the top plate as described above, An analysis experiment was conducted.

（１） 実験サンプル
先ず実験サンプルとして、図７（６本）、図９（８本）、図１２（１０本）、図１５（１２本）の各々に示すように突出方向に関係なく補強リブの本数を異にする基本モデル４種類の存在を前提とし、その場合における図９（８本）の基本モデルの場合と図１２（１０本）の基本モデルの場合について、片面リブ３２ａ，３２ａ・・・と両面リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・のもの２種類の合計６種類の第１〜第６の実験用天板３２Ａ〜３２Ｆを製作した。そして、その板厚は、全て０．７ｍｍである。その諸元については、図１７の表を参照。 (1) Experimental sample First, as an experimental sample, as shown in FIG. 7 (6), FIG. 9 (8), FIG. 12 (10), and FIG. Assuming that there are four types of basic models having different numbers, the single-sided ribs 32a, 32a,... In the case of the basic model of FIG. 9 (8) and the case of the basic model of FIG. .. and two types of double-sided ribs 32a ', 32a' ..., 32a, 32a ..., a total of six types of first to sixth experimental top plates 32A to 32F were manufactured. And all the board thickness is 0.7 mm. For the specifications, see the table in FIG.

ａ） 第１の天板３２Ａ
図７のように補強リブ３２ａ，３２ａ・・・が周方向に６０°間隔で６本均等に配設され、相互に１８０°の間隔を保って直径方向に対向する一対の補強リブ３２ａ，３２ａ両端間の寸法（長さ）Ｌが６９６．０ｍｍ、溝幅Ｗが６０．０ｍｍで、補強リブ３２ａ，３２ａ・・・を表面側又は裏面側の何れか一面側にのみ突出させたもの（図８参照）。 a) First top plate 32A
As shown in FIG. 7, six reinforcing ribs 32a, 32a,... Are equally arranged at intervals of 60.degree. In the circumferential direction, and a pair of reinforcing ribs 32a, 32a facing each other in the diametrical direction with an interval of 180.degree. The dimension (length) L between both ends is 696.0 mm, the groove width W is 60.0 mm, and the reinforcing ribs 32a, 32a... Are projected only on one side of the front side or the back side (see FIG. 8).

ｂ） 第２の天板３２Ｂ
図９のように補強リブ３２ａ，３２ａ・・・が周方向に４５°間隔で８本均等に配設され、相互に１８０°の間隔を保って直径方向に対向する一対の補強リブ３２ａ，３２ａ両端間の寸法（長さ）Ｌが６９６．０ｍｍ、溝幅Ｗが６０．０ｍｍで、補強リブ３２ａ，３２ａ・・・を表面側又は裏面側の何れか一面側にのみ突出させたもの（図１０参照）。 b) Second top plate 32B
As shown in FIG. 9, eight reinforcing ribs 32a, 32a,... Are equally arranged at intervals of 45 ° in the circumferential direction, and a pair of reinforcing ribs 32a, 32a facing each other in the diametrical direction with an interval of 180 ° therebetween. The dimension (length) L between both ends is 696.0 mm, the groove width W is 60.0 mm, and the reinforcing ribs 32a, 32a... Are projected only on one side of the front side or the back side (see FIG. 10).

ｃ） 第３の天板３２Ｃ
図９のように補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・が周方向に４５°間隔で８本均等に配設され、相互に１８０°の間隔を保って直径方向に対向する一対の補強リブ３２ａ′，３２ａ′、３２ａ，３２ａ両端間の寸法（長さ）Ｌが６９６．０ｍｍ、溝幅Ｗが６０．０ｍｍで、補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・を表面側と裏面側の両面側に交互に突出させたもの（図１１参照）。 c) Third top plate 32C
As shown in FIG. 9, eight reinforcing ribs 32a ′, 32a ′,..., 32a, 32a... Are evenly arranged at intervals of 45 ° in the circumferential direction. A pair of opposing reinforcing ribs 32a ′, 32a ′, 32a, 32a has a dimension (length) L of 696.0 mm, a groove width W of 60.0 mm, and reinforcing ribs 32a ′, 32a ′,. , 32a... Are alternately projected on both the front and back sides (see FIG. 11).

ｄ） 第４の天板３２Ｄ
図１２のように補強リブ３２ａ，３２ａ・・・が周方向に３６°間隔で１０本均等に配設され、相互に１８０°の間隔を保って直径方向に対向する一対の補強リブ３２ａ′，３２ａ′、３２ａ，３２ａ両端間の寸法（長さ）Ｌが６９６．０ｍｍ、溝幅Ｗが６０．０ｍｍで、補強リブ３２ａ，３２ａ・・・を表面側又は裏面側の何れか一面側にのみ突出させたもの（図１３参照）。 d) Fourth top plate 32D
As shown in FIG. 12, ten reinforcing ribs 32a, 32a,... Are evenly arranged at intervals of 36 ° in the circumferential direction, and a pair of reinforcing ribs 32a ′ opposed to each other in the diametrical direction at intervals of 180 °. The dimension (length) L between both ends 32a ′, 32a, 32a is 696.0 mm, the groove width W is 60.0 mm, and the reinforcing ribs 32a, 32a... Are only on one side of the front side or the back side. Projected (see FIG. 13).

ｅ） 第５の天板３２Ｅ
図１２のように補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・が周方向に３６°間隔で１０本均等に配設され、相互に１８０°の間隔を保って直径方向に対向する一対の補強リブ３２ａ′，３２ａ′、３２ａ，３２ａ両端間の寸法（長さ）Ｌが６９６．０ｍｍ、溝幅Ｗが６０．０ｍｍで、補強リブ３２ａ′，３２ａ′・・・、３２ａ，３２ａ・・・表面側と裏面側の両面側に交互に突出させたもの（図１４参照）。 e) The fifth top plate 32E
As shown in FIG. 12, ten reinforcing ribs 32a ′, 32a ′..., 32a, 32a... Are arranged evenly at intervals of 36 ° in the circumferential direction, and in the diametrical direction with an interval of 180 ° between each other. A pair of opposing reinforcing ribs 32a ′, 32a ′, 32a, 32a has a dimension (length) L of 696.0 mm, a groove width W of 60.0 mm, and reinforcing ribs 32a ′, 32a ′,. , 32a..., 32a... Alternately projected on both the front and back sides (see FIG. 14).

ｆ） 第６の天板３２Ｆ
図１５のように補強リブ３２ａ，３２ａ・・・が周方向に３０°間隔で１２本均等に配設され、相互に１８０°の間隔を保って直径方向に対向する一対の補強リブ３２ａ，３２ａ両端間の寸法（長さ）Ｌが６９６．０ｍｍ、溝幅Ｗが６０．０ｍｍで、補強リブ３２ａ，３２ａ・・・を表面側又は裏面側の何れか一面側にのみ突出させたもの（図１６参照）。 f) Sixth top plate 32F
As shown in FIG. 15, twelve reinforcing ribs 32a, 32a,... Are equally arranged at intervals of 30.degree. In the circumferential direction, and a pair of reinforcing ribs 32a, 32a facing each other in the diametrical direction with an interval of 180.degree. The dimension (length) L between both ends is 696.0 mm, the groove width W is 60.0 mm, and the reinforcing ribs 32a, 32a... Are projected only on one side of the front side or the back side (see FIG. 16).

１） 片面方向にのみ配置した放射状リブの本数の影響
放射状の補強リブ３２ａ，３２ａ・・・を片面側にのみ突出させて配置した天板３２の最大たわみ量と共振回転数に及ぼすリブ本数の影響を図１８の表と図１９，図２０のグラフに示す。なお、ここでは、補強リブ３２ａの幅Ｗと長さＬと深さｈを一定とした。 1) Influence of the number of radial ribs arranged only in one side direction The number of ribs affecting the maximum deflection amount and the resonance rotational speed of the top plate 32 arranged with the radial reinforcing ribs 32a, 32a. The influence is shown in the table of FIG. 18 and the graphs of FIGS. Here, the width W, length L, and depth h of the reinforcing rib 32a are constant.

図１８の表と図１９、図２０のグラフに示した解析結果から、次のような知見が得られる。   The following knowledge is obtained from the analysis results shown in the table of FIG. 18 and the graphs of FIGS. 19 and 20.

補強リブ３２ａの本数が６本と１２本の場合に比べて、補強リブ３２ａの本数が８本と１０本の場合には天板３２の静動特性が総じて優れている。   Compared with the case where the number of the reinforcing ribs 32a is 6 and 12, the static characteristics of the top plate 32 are generally excellent when the number of the reinforcing ribs 32a is 8 and 10.

補強リブ３２ａの本数が８本と１０本の場合、天板３２の最大たわみ量（１．３５／１．３２ｍｍ）と１次の共振回転数（９０７．０／９１４．０ｒｐｍ）は、それぞれほぼ同等であるが、２次の共振回転数については、８本リブの天板３２は９９０．０ｒｐｍであるのに対して、１０本リブの天板３２は９４０．０ｒｐｍであり、５．０％低下していることが明らかである。また、補強リブ３２ａの本数が８本の場合、天板３２の静動特性が最も良いと推測される。   When the number of the reinforcing ribs 32a is 8 and 10, the maximum deflection amount (1.35 / 1.32 mm) of the top plate 32 and the primary resonance rotational speed (907.0 / 914.0 rpm) are almost equal, respectively. Equivalent, for the secondary resonance speed, the 8-rib top plate 32 is 990.0 rpm, whereas the 10-rib top plate 32 is 940.0 rpm, 5.0% It is clear that it is decreasing. Moreover, when the number of the reinforcing ribs 32a is 8, it is estimated that the static characteristics of the top plate 32 are the best.

２） 放射状リブの深さの影響／片面リブと両面リブの影響
放射状のリブ８本を片面（３２ａ）と両面（３２ａ′３２ａ）に配置した場合、放射状リブの深さｈの違いによる天板３２の最大たわみ量と共振回転数の変化を図２１の表と図２２，図２３のグラフに示す。 2) Effect of radial rib depth / Effect of single-sided ribs and double-sided ribs When eight radial ribs are arranged on one side (32a) and both sides (32a'32a), the top plate due to the difference in radial rib depth h The maximum deflection amount of 32 and the change in the resonance rotational speed are shown in the table of FIG. 21 and the graphs of FIGS.

この解析結果から、次のような知見が得られる。   From this analysis result, the following knowledge is obtained.

片面リブ配置（３２ａ）と両面リブ配置（３２ａ′，３２ａ）のいずれの場合においても、リブの深さが深ければ深いほど、天板３２の最大たわみ量が低下し、共振回転数が向上することが明らかになった。これは、リブの深さを増すことは、天板３２の静動特性の向上につながることを意味する。   In either case of the single-sided rib arrangement (32a) and the double-sided rib arrangement (32a ', 32a), the deeper the rib, the lower the maximum deflection of the top plate 32 and the higher the resonance rotational speed. It became clear. This means that increasing the depth of the ribs leads to an improvement in the static characteristics of the top plate 32.

片面リブの場合と比べて両面リブを配置した天板３２は優れた静動特性を示すことが図２１の表と図２２，図２３のグラフから読み取れる。   It can be read from the table of FIG. 21 and the graphs of FIGS. 22 and 23 that the top plate 32 on which the double-sided ribs are arranged has superior static characteristics compared to the case of the single-sided ribs.

ところで、このリブの深さに関連し、本願発明者は、上記のような放射状のリブとは別に複数本のリブが平行に配置された平行リブの場合において、同複数本のリブを上記同様に片面と両面に配置した場合のリブの深さの違いによる天板３２の最大たわみ量と共振回転数の変化を測定している。   By the way, in relation to the depth of the rib, the inventor of the present application, in the case of a parallel rib in which a plurality of ribs are arranged in parallel separately from the radial rib as described above, The maximum deflection of the top plate 32 and the change in the resonance rotational speed due to the difference in the rib depth when arranged on one side and both sides are measured.

それによると、当該リブの深さが２．０〜６．０ｍｍと比較的浅い場合、天板３２の最大たわみ量と共振回転数がリブの深さの影響を強く受ける。これは、リブの深さが比較的浅い場合においては、リブの深さの小さな変動（またはバラツキ）が天板３２の最大たわみ量と共振回転数に大きな変化をもたらすことになり、リブの深さに対する天板３２の静動特性のロバスト性が低いことを意味する。   According to this, when the depth of the rib is relatively shallow at 2.0 to 6.0 mm, the maximum deflection amount and the resonance rotational speed of the top plate 32 are strongly influenced by the depth of the rib. This is because, when the rib depth is relatively shallow, a small fluctuation (or variation) in the rib depth causes a large change in the maximum deflection amount and the resonance rotational speed of the top plate 32, and the rib depth. This means that the robustness of the static characteristics of the top plate 32 with respect to the height is low.

これに対して、リブの深さが８．０〜１２．０ｍｍと比較的深い場合、天板３２の最大たわみ量と共振回転数に及ぼすリブの深さの影響が低下する。これは、リブの深さが比較的深い場合においては、リブの深さの小さな変動（またはバラツキ）が天板３２の最大たわみ量と共振回転数に大きな変化をもたらすことなく、リブの深さに対する天板３２の静動特性のロバスト性が比較的高いことを意味する。   On the other hand, when the depth of the rib is relatively deep as 8.0 to 12.0 mm, the influence of the depth of the rib on the maximum deflection amount and the resonance rotational speed of the top plate 32 is lowered. This is because when the rib depth is relatively deep, a small variation (or variation) in the rib depth does not cause a large change in the maximum deflection amount and the resonance rotational speed of the top plate 32, and the rib depth. It means that the robustness of the static characteristics of the top plate 32 with respect to is relatively high.

一方、リブの深さが１４．０〜１８．０ｍｍと深い場合、天板３２の最大たわみ量と共振回転数に与えるリブの深さの影響が限られている。これは、リブの深さが深い場合においては、リブの深さの変動（またはバラツキ）が天板３２の最大たわみ量と共振回転数にもたらす変化が小さく、リブの深さに対する天板３２の静動特性のロバスト性が高いことを意味する。   On the other hand, when the rib depth is as deep as 14.0 to 18.0 mm, the influence of the rib depth on the maximum deflection amount and the resonance rotational speed of the top plate 32 is limited. In the case where the depth of the rib is deep, the change (or variation) of the depth of the rib has a small change in the maximum deflection amount and the resonance rotational speed of the top plate 32, and the top plate 32 has a depth relative to the rib depth. It means that the robustness of static characteristics is high.

これらのことは、上記放射状に補強リブを配置した場合にも略同様に言えることである。   These can be said to be substantially the same even when the reinforcing ribs are arranged radially.

一方、従来、一般に天板３２の最大たわみ量を１．３１ｍｍ以下に抑え、共振回転数を７４２．０ｒｐｍ以上に保持することが設計基準として要求されている。   On the other hand, conventionally, it is generally required as a design standard that the maximum deflection amount of the top plate 32 is suppressed to 1.31 mm or less and the resonance rotational speed is held to 742.0 rpm or more.

したがって、このような設計基準を満たすことと、上記リブの深さに対する天板３２の静動特性のロバスト性を保持することとを総合的に考慮すれば、上記リブの深さは８．０ｍｍ〜１０．０ｍｍが望ましい。   Accordingly, if comprehensively considering satisfying such a design standard and maintaining the robustness of the static characteristics of the top plate 32 with respect to the depth of the rib, the depth of the rib is 8.0 mm. ˜10.0 mm is desirable.

（最良の実施の形態２）
図２４は、本願発明の最良の実施の形態２に係る高所設置型空気調和機の天板の構造を示している。 (Best Mode 2)
FIG. 24 shows the structure of the top plate of an altitude installation type air conditioner according to the second preferred embodiment of the present invention.

この最良の実施の形態２における天板３２も、すでに述べた図２５〜図２７に示した従来例の場合と略同様の天井埋込型空気調和機（室内機ユニット）の本体ケーシング３に適用するに最適なものとして構成されている。   The top plate 32 in the best embodiment 2 is also applied to the main casing 3 of the ceiling-embedded air conditioner (indoor unit) that is substantially the same as that of the conventional example shown in FIGS. It is configured as the best one to do.

そして、その板厚は従来のもの０．８ｍｍよりも薄く０．７ｍｍ程度に形成されているとともに、その形状は、図示のように、同図２５〜図２７の空気調和機のカセット型本体ケーシング３の形状に対応して略六角形状に形成され、その外周には、同本体ケーシング３の上端部外周側に冠合させるための鉤状の縁部３２ｃが設けられている。   And the plate | board thickness is thinner than the conventional 0.8mm, and is formed in about 0.7mm, The shape is the cassette type main body casing of the air conditioner of FIGS. 3 is formed in a substantially hexagonal shape corresponding to the shape of No. 3, and a flange-like edge portion 32c for engaging with the outer peripheral side of the upper end portion of the main body casing 3 is provided on the outer periphery thereof.

また、該天板３２には、図２５〜図２７のものと同様の構成のファン５およびファンモータ９が支持される略中央部３３付近から略環状の熱交換器４が支持される半径方向外周部にかけて、実施の形態１のものと同様の放射状に延びる裏面側方向に突出した断面が逆台形状で、底面の幅がＷ1、上端側の幅がＷ2、深さがＤ2、傾斜角がθ2の複数本の主補強リブ３２ａ，３２ａ・・・が設けられている。そして、それら各主補強リブ３２ａ，３２ａ・・・外周端側の熱交換器支持部には、下方への凹み深さＤ3が上記Ｄ2よりも所定寸法だけ小さくなった段差部３２ｂ，３２ｂ・・・が形成されている（寸法については図示省略）。 Further, the top plate 32 has a radial direction in which the substantially annular heat exchanger 4 is supported from the vicinity of the substantially central portion 33 where the fan 5 and the fan motor 9 having the same configuration as those in FIGS. 25 to 27 are supported. The cross-section protruding in the rear side direction extending radially like the one in the first embodiment is an inverted trapezoidal shape on the outer periphery, the bottom width is W 1 , the upper end width is W 2 , the depth is D 2 , A plurality of main reinforcing ribs 32a, 32a... Having an inclination angle of θ 2 are provided. Then, each of these main reinforcement ribs 32a, 32a · · · in the heat exchanger support portion of the outer peripheral end side, the stepped portion 32b which is recessed a depth D 3 downward becomes smaller by a predetermined dimension than the D 2, 32b Are formed (the dimensions are not shown).

また、上記天板３２には、上記略中央部３３のファン５およびファンモータ９支持部にも、深さＤ1の補強リブ３３ａが設けられている（Ｄ1＝Ｄ2）。該補強リブ３３ａは、３点および４点支持が可能な５ケ所のファンモータ支持部ａ〜ｅの各々間に入り込み、内接する形で配設されている。 Further, the top plate 32, the fans 5 and the fan motor 9 supporting portion of the substantially central portion 33, the reinforcing rib 33a of a depth D 1 is provided (D 1 = D 2). The reinforcing ribs 33a are arranged so as to enter between the five fan motor support portions a to e that can support three and four points and to be inscribed therein.

そして、それによりファン５およびファンモータ９支持部の基本的な剛性および強度、たわみ特性、振動特性を有効に改善向上させるようにしている。しかし、そのままでは上記天板３２の外周側では、主補強リブ３２ａ，３２ａ・・・相互の間隔が広くなり、その分剛性、強度等が不足する。   As a result, the basic rigidity and strength, deflection characteristics, and vibration characteristics of the fan 5 and fan motor 9 support portions are effectively improved and improved. However, as it is, on the outer peripheral side of the top plate 32, the space between the main reinforcing ribs 32a, 32a,.

そこで、それら複数本の主補強リブ３２ａ，３２ａ・・・の間には、図示のように、想定される荷重の大きさ等に対応して所望の形状、大きさの複数の副補強リブ３４，３４・・・が隣接する形で設けられている。   Therefore, between the plurality of main reinforcing ribs 32a, 32a..., As shown in the drawing, a plurality of sub reinforcing ribs 34 having a desired shape and size corresponding to the assumed load size and the like. , 34... Are provided adjacent to each other.

しかも、この実施の形態の場合、上記主補強リブ３２ａ，３２ａ・・・が天板３２の裏面側に突出している一方、副補強リブ３４，３４・・・が、その逆の表面側に突出している。   Moreover, in the case of this embodiment, the main reinforcing ribs 32a, 32a,... Protrude from the back side of the top plate 32, while the auxiliary reinforcing ribs 34, 34,. ing.

そして、それらによって、天板３２の静たわみを一定値以下にし、またファンモータ９回転による共振を避けるため、天板３２の１次固有振動数を一定値以上に維持するようにしている。   And by these, in order to make the static deflection of the top plate 32 below a certain value and to avoid resonance due to the rotation of the fan motor 9, the primary natural frequency of the top plate 32 is kept above a certain value.

そして、このような構成において、従来のものと同様にして、熱交換器４、ファン５およびファンモータ９等の重量物が取り付けられる。   In such a configuration, heavy objects such as the heat exchanger 4, the fan 5, and the fan motor 9 are attached in the same manner as the conventional one.

以上のように、この実施の形態２では、複数本の補強リブが、長さの長い主補強リブ３２ａ，３２ａ・・・と該主補強リブ３２ａ，３２ａ・・・の間に設けられた長さの短かい副補強リブ３４，３４・・・とからなり、主補強リブ３２ａ，３２ａ・・・が天板３２の表面側又は裏面側の何れか一方面側に突出し、副補強リブ３４，３４・・・が、その逆面側に突出している。   As described above, in the second embodiment, a plurality of reinforcing ribs are provided between the long main reinforcing ribs 32a, 32a... And the main reinforcing ribs 32a, 32a. The main reinforcing ribs 32a, 32a,... Protrude from either the front surface side or the back surface side of the top plate 32, and the auxiliary reinforcing ribs 34, 34,. 34 ... protrudes on the opposite side.

上記実施の形態１と同様の作用効果は、このような副補強リブ３２ａ，３２ａ・・・を有する構成の場合においても、全く同様に実現することができ、その場合、天板３２の全体に亘ってバランス良く支持剛性をアップすることができ、最大たわみ量を均等に低減することが可能となる。   The same effects as those of the first embodiment can be realized in the same manner even in the case of such a configuration having the auxiliary reinforcing ribs 32a, 32a... Thus, the support rigidity can be increased in a well-balanced manner, and the maximum deflection amount can be reduced evenly.

したがって、この場合においても、上記天板３２の板厚は、０．６ｍｍ〜０．７ｍｍの厚さで十分である。   Therefore, even in this case, a thickness of 0.6 mm to 0.7 mm is sufficient for the top plate 32.

本願発明の最良の実施の形態１に係る高所設置型空気調和機の天板部の構造（熱交換器設置状態での）を示す下面図である。It is a bottom view which shows the structure (in the heat exchanger installation state) of the top-plate part of the high place installation type air conditioner which concerns on the best Embodiment 1 of this invention. 同高所設置型空気調和機の天板部の構造（熱交換器非設置状態での）を示す下面図である。It is a bottom view which shows the structure (in the heat exchanger non-installation state) of the top-plate part of the same height installation type air conditioner. 同天板部の正面図である。It is a front view of the same top plate part. 同天板部の中央縦断面図（図２のＡ−Ａ）である。It is a center longitudinal cross-sectional view (AA of FIG. 2) of the same top plate part. 同天板部の要部である補強リブ部分の構成を示す横断面図（図２のＢ−Ｂ）である。It is a cross-sectional view (BB of FIG. 2) which shows the structure of the reinforcement rib part which is the principal part of the top plate part. 同天板部のリブ長手方向の断面図である。It is sectional drawing of the rib longitudinal direction of the same top plate part. 同天板部の特性を確認するために製作したリブ本数６本の場合の基本モデルの構造を示す下面図である。It is a bottom view which shows the structure of the basic model in case the number of the ribs manufactured in order to confirm the characteristic of the same top plate part is six. 同図６の基本モデル（６本）において全ての補強リブを裏面側にのみ突出させた第１の実験サンプルの天板構造を示す斜め下方から見た斜視図である。It is the perspective view seen from diagonally downward which shows the top plate structure of the 1st experimental sample which made all the reinforcement ribs protrude only in the back surface side in the basic model (six) of FIG. 上記天板部の特性を確認するために製作したリブ本数８本の場合の基本モデルの構造を示す下面図である。It is a bottom view which shows the structure of the basic model in case the number of the ribs manufactured in order to confirm the characteristic of the said top-plate part is eight. 同図９の基本モデル（８本）において全ての補強リブを裏面側にのみ突出させた第２の実験サンプルの天板構造を示す斜め下方から見た斜視図である。It is the perspective view seen from diagonally downward which shows the top plate structure of the 2nd experimental sample which made all the reinforcement ribs protrude only in the back surface side in the basic model (eight) of FIG. 同図９の基本モデル（８本）において補強リブを表裏両面側に突出させた第３の実験サンプルの天板構造を示す斜め下方から見た斜視図である。It is the perspective view seen from diagonally downward which shows the top-plate structure of the 3rd experimental sample which made the reinforcement rib protrude in the front and back both surfaces side in the basic model (eight) of FIG. 上記天板部の特性を確認するために製作したリブ本数１０本の場合の基本モデルの構造を示す下面図である。It is a bottom view which shows the structure of the basic model in case the number of the ribs 10 manufactured in order to confirm the characteristic of the said top-plate part. 同図１２の基本モデル（１０本）において全ての補強リブを裏面側にのみ突出させた第４の実験サンプルの天板構造を示す斜め下方から見た斜視図である。It is the perspective view seen from diagonally downward which shows the top plate structure of the 4th experimental sample which made all the reinforcement ribs protrude only in the back surface side in the basic model (10 pieces) of FIG. 同図１２の基本モデル（１０本）において補強リブを表裏両面側に突出させた第５の実験サンプルの天板構造を示す斜め下方から見た斜視図である。It is the perspective view seen from diagonally downward which shows the top plate structure of the 5th experimental sample which made the reinforcement rib protrude in the front and back both sides in the basic model (10 pieces) of FIG. 上記天板部の特性を確認するために製作したリブ本数１２本の場合の基本モデルの構造を示す下面図である。It is a bottom view which shows the structure of the basic model in the case of 12 ribs manufactured in order to confirm the characteristic of the said top-plate part. 同図１４の基本モデル（１２本）において全ての補強リブを裏面側にのみ突出させた第６の実験サンプルの天板構造を示す斜め下方から見た斜視図である。It is the perspective view seen from diagonally downward which shows the top-plate structure of the 6th experimental sample which made all the reinforcement ribs protrude only in the back surface side in the basic model (12 pieces) of FIG. 上記特性確認のために製作した各実験サンプルにおける放射状リブの緒元を示す図表である。It is a graph which shows the specification of the radial rib in each experimental sample produced for the said characteristic confirmation. 放射状リブを片面のみに配置した第１、第２、第４、第６の実験サンプルの天板の最大たわみ量と共振回転数とを示す図表である。It is a table | surface which shows the maximum deflection amount and resonant rotation speed of the top plate of the 1st, 2nd, 4th, 6th experimental sample which has arrange | positioned the radial rib only to one side. 放射状リブを片面のみに配置した第１、第２、第４、第６の実験サンプルの天板のリブ本数と最大たわみ量との関係を示すグラフである。It is a graph which shows the relationship between the rib number of the top plate of the 1st, 2nd, 4th, 6th experimental sample which has arrange | positioned the radial rib only to one side, and the largest deflection amount. 同放射状リブを片面のみに配置した第１、第２、第４、第６の実験サンプルの天板のリブ本数と共振回転数との関係を示すグラフである。It is a graph which shows the relationship between the number of ribs of the top plate of the 1st, 2nd, 4th, 6th experimental sample which has arrange | positioned the same radial rib only on one side, and the resonant rotation speed. 放射状リブを両面に配置した第３、第５の実験サンプルの天板の最大たわみ量と共振回転数とを示す図表である。It is a graph which shows the maximum deflection amount and resonant rotation speed of the top plate of the 3rd and 5th experimental sample which has arrange | positioned the radial rib on both surfaces. 放射状リブを両面に配置した第３、第５の実験サンプルの天板のリブ深さと最大たわみ量との関係を示すグラフである。It is a graph which shows the relationship between the rib depth of the top plate of the 3rd, 5th experimental sample which has arrange | positioned the radial rib on both surfaces, and the maximum deflection. 同放射状リブを両面に配置した第３、第５の実験サンプルの天板のリブ深さと共振回転数との関係を示すグラフである。It is a graph which shows the relationship between the rib depth of the top plate of the 3rd, 5th experimental sample which has arrange | positioned the same radial rib on both surfaces, and the resonant rotation speed. 本願発明の最良の実施の形態２に係る高所設置型空気調和機の天板部の構造を示す下面図である。It is a bottom view which shows the structure of the top-plate part of the high place installation type air conditioner which concerns on best Embodiment 2 of this invention. 従来の高所設置型空気調和機の全体構成を示す中央縦断面図である。It is a central longitudinal cross-sectional view which shows the whole structure of the conventional high place installation type air conditioner. 同空気調和機の化粧パネルおよび本体ケーシングを除去して下方側から見た下面図である。It is the bottom view which removed the decorative panel and main body casing of the air conditioner, and was seen from the lower side. 同空気調和機の天板部とベルマウス等の取付関係を示す分解斜視図である。It is a disassembled perspective view which shows attachment relations, such as a top plate part of the same air conditioner, and a bell mouth.

符号の説明Explanation of symbols

１は空気調和機、３は本体ケーシング、４は熱交換器、５はファン（羽根車）、６はベルマウス、９はファンモータ、９ａはモータ軸、９ｂは取付ブラケット、１１はマウント部材、３２は天板、３２ａ，３２ａ′は補強リブ（主補強リブ）、３２ｂは段差部、３３は中央部、３３ａは補強リブ、３４は副補強リブ、４１は熱交換器支持部材である。   1 is an air conditioner, 3 is a main body casing, 4 is a heat exchanger, 5 is a fan (impeller), 6 is a bell mouth, 9 is a fan motor, 9a is a motor shaft, 9b is a mounting bracket, 11 is a mounting member, 32 is a top plate, 32a and 32a 'are reinforcing ribs (main reinforcing ribs), 32b is a stepped portion, 33 is a central portion, 33a is a reinforcing rib, 34 is a secondary reinforcing rib, and 41 is a heat exchanger support member.

Claims (6)

ファン（５）およびファンモータ（９）、熱交換器（４）等を収納する本体ケーシング（３）と、該本体ケーシング（３）の天面にあって、上記ファン（５）およびファンモータ（９）、熱交換器（４）等を吊設支持する天板（３２）とを備え、上記天板（３２）には、上記ファンモータ（９）が支持される略中央部付近から上記熱交換器（４）が支持される半径方向外周部にかけて、放射状に延びる複数本の補強リブを設けてなる高所設置型空気調和機であって、上記複数本の補強リブは、上記天板（３２）の表面側に突出する補強リブ（３２ａ′），（３２ａ′）・・・と裏面側に突出する補強リブ（３２ａ），（３２ａ）・・・とからなっていることを特徴とする高所設置型空気調和機の天板構造。   A main body casing (3) for housing a fan (5), a fan motor (9), a heat exchanger (4), etc., and the fan (5) and fan motor ( 9) and a top plate (32) for suspending and supporting the heat exchanger (4) and the like, and the top plate (32) has the heat from the vicinity of the substantially central portion where the fan motor (9) is supported. An altitude installation type air conditioner provided with a plurality of reinforcing ribs extending radially toward the outer periphery in the radial direction where the exchanger (4) is supported, wherein the plurality of reinforcing ribs include the top plate ( 32) and reinforcing ribs (32a ′), (32a ′)... Projecting to the front surface side and reinforcing ribs (32a), (32a). Top plate structure of an air conditioner installed at high altitude. 天板（３２）の表面側に突出する補強リブ（３２ａ′），（３２ａ′）・・・と裏面側に突出する補強リブ（３２ａ），（３２ａ）・・・とは、周方向に交互に配設されていることを特徴とする請求項１記載の高所設置型空気調和機の天板構造。   Reinforcing ribs (32a ′), (32a ′)... Projecting on the front surface side of the top plate (32) and reinforcing ribs (32a), (32a). 2. The top plate structure of an altitude installation type air conditioner according to claim 1, wherein the top plate structure is disposed on the top. 複数本の補強リブは、長さの長い主補強リブ（３２ａ），（３２ａ）・・・と該主補強リブ（３２ａ），（３２ａ）・・・の間に設けられた長さの短かい副補強リブ（３４），（３４）・・・とからなり、主補強リブ（３２ａ），（３２ａ）・・・が天板（３２）の表面側又は裏面側の何れか一方面側に突出し、副補強リブ（３４），（３４）・・・が、その逆面側に突出していることを特徴とする請求項１又は２記載の高所設置型空気調和機の天板構造。   The plurality of reinforcing ribs are short in length provided between the long main reinforcing ribs (32a), (32a)... And the main reinforcing ribs (32a), (32a). The main reinforcing ribs (32a), (32a)... Protrude from either the front surface side or the back surface side of the top plate (32). The auxiliary reinforcing ribs (34), (34),... Protrude on the opposite surface side, and the top plate structure for an altitude installation type air conditioner according to claim 1 or 2. 各補強リブ（３２ａ′），（３２ａ′）・・・、（３２ａ），（３２ａ）・・・、（３４），（３４）・・・における長手方向の深さを、両端部側では浅く、それらの間では深くなるようにしたことを特徴とする請求項１，２又は３記載の高所設置型空気調和機の天板構造。   The longitudinal depths of the reinforcing ribs (32a ′), (32a ′)..., (32a), (32a)... (34), (34). 4. The top plate structure of an altitude installation type air conditioner according to claim 1, 2 or 3, characterized in that it is deeper between them. 天板（３２）の板厚を、０．６ｍｍ〜０．７ｍｍの範囲に設定したことを特徴とする請求項１，２，３又は４記載の高所設置型空気調和機の天板構造。   5. A top plate structure for an air conditioner with a high location according to claim 1, 2, 3, or 4, wherein the thickness of the top plate (32) is set in a range of 0.6 mm to 0.7 mm. 各補強リブ（３２ａ′），（３２ａ′）・・・、（３２ａ），（３２ａ）・・・、（３４），（３４）・・・の深さが、８．０ｍｍ〜１０．０ｍｍであることを特徴とする請求項１，２，３，４又は５記載の高所設置型空気調和機の天板構造。   The depth of each reinforcing rib (32a '), (32a') ..., (32a), (32a) ..., (34), (34) ... is 8.0 mm to 10.0 mm. The top plate structure of an air conditioner with high installation according to claim 1, 2, 3, 4 or 5.
JP2005115994A 2005-04-13 2005-04-13 Top plate structure of high place-installation type air conditioner Withdrawn JP2006292312A (en)

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US11/884,701 US20080159848A1 (en) 2005-04-13 2006-04-07 Top Plate Structure for High Location Installation Type Air Conditioner
EP06731409A EP1867930A1 (en) 2005-04-13 2006-04-07 Top plate structure of air conditioner for installation at high level
CNA200680008956XA CN101147031A (en) 2005-04-13 2006-04-07 Top plate structure of air conditioner for installation at high level
PCT/JP2006/307462 WO2006112278A1 (en) 2005-04-13 2006-04-07 Top plate structure of air conditioner for installation at high level

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