JP4721854B2 - Fan guard, blower, and air conditioner - Google Patents

Fan guard, blower, and air conditioner Download PDF

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JP4721854B2
JP4721854B2 JP2005287362A JP2005287362A JP4721854B2 JP 4721854 B2 JP4721854 B2 JP 4721854B2 JP 2005287362 A JP2005287362 A JP 2005287362A JP 2005287362 A JP2005287362 A JP 2005287362A JP 4721854 B2 JP4721854 B2 JP 4721854B2
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fan guard
spiral
gap
outer peripheral
fan
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JP2007100979A (en
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秀樹 大庭
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Sanyo Electric Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)

Description

本発明は、開口率が大きく送風抵抗を軽減し、送風音の発生を抑制したファンガード、送風機、及び空気調和装置に関する。   The present invention relates to a fan guard, a blower, and an air conditioner that have a large aperture ratio, reduce blowing resistance, and suppress generation of blowing sound.

一般に、熱交換した空気の吹出口を備えた外箱内にプロペラファンを前記吹出口に対応して収容すると共に前記吹出口にファンガードを備えた空気調和装置が知られている。   In general, there is known an air conditioner in which a propeller fan is accommodated in an outer box provided with a heat-exchanging air outlet, corresponding to the outlet, and a fan guard is provided at the outlet.

この種の空気調和装置におけるファンガードには、大きく分けて二種類のタイプがあり、１つは、複数の縦リブと複数の横リブとを直交させているタイプと、他の１つは、複数の放射リブと複数の円環リブとを交差させているタイプである（例えば特許文献１及び特許文献２参照）。
後者のタイプの特許文献１に示されるファンガードは、複数の放射リブが中心に設けられる閉塞板部の近傍で間隔を狭めるものとなっていて開口率がかなり低くなっていて通風抵抗が大きいために閉塞板部の周囲近傍の吹き出し量が少なくなっているので全体の通風効率が低くなっている。
特許文献２に示されるファンガードは、放射リブについて外周寄りの半部と内周寄りの半部とに分割し、内周寄りの放射リブの本数を少なくすることで閉塞板部の周囲近傍での間隔をいくらかでも大きく取れる構成である。
特開２００２−２２８１９２号公報 特開２００４−１５６８８３号公報 There are roughly two types of fan guards in this type of air conditioner, one is a type in which a plurality of vertical ribs and a plurality of horizontal ribs are orthogonal, and the other one is: This is a type in which a plurality of radiation ribs and a plurality of annular ribs are crossed (see, for example, Patent Document 1 and Patent Document 2).
The fan guard shown in Patent Document 1 of the latter type narrows the interval in the vicinity of the closing plate portion provided with a plurality of radiation ribs at the center, and the aperture ratio is considerably low and the ventilation resistance is large. In addition, since the blowout amount in the vicinity of the periphery of the blocking plate portion is reduced, the overall ventilation efficiency is lowered.
The fan guard shown in Patent Document 2 is divided into a half near the outer periphery and a half near the inner periphery with respect to the radiating rib, and by reducing the number of radiating ribs near the inner periphery, in the vicinity of the periphery of the closing plate portion. It is a configuration that can take as much as possible.
JP 2002-228192 A JP 2004-156883 A

しかしながら、特許文献２に示されるファンガードについても、放射リブが中心寄りで間隔を狭めていて、閉塞板部の周囲近傍で開口面積を小さくして通風量を少なくしている。   However, also in the fan guard shown in Patent Document 2, the distance between the radiating ribs is reduced near the center, and the opening area is reduced in the vicinity of the periphery of the blocking plate portion to reduce the ventilation rate.

本発明は、上述した点に鑑みてなされたものであり、開口面積を中央に配置される閉塞板部の周囲近傍でも大きく確保でき、送風抵抗が軽減され、送風音が減少する、ファンガード、送風機、及び空気調和装置を提供することにある。   The present invention has been made in view of the above-described points, and can secure a large opening area even in the vicinity of the periphery of the closing plate portion arranged in the center, the fan guard is reduced, the blowing sound is reduced, It is providing the air blower and an air conditioning apparatus.

前記課題を解決するために、本発明のファンガードは、プロペラファンをガードするファンガードにおいて、外周リング部と、この外周リング部の中心に配置される閉塞板部と、一端を前記外周リング部へ一体に連結され他端を前記閉塞板部へ一体に連結されて周方向に配列され隙間の幅が全長に渡り略同一幅であり全体でプロペラファンの回転により吐出される円周と接線方向の風の流れに略一致する渦巻状の隙間を形成する複数の渦巻リブとを備え、互いに隣り合う渦巻リブ同士間に、この渦巻リブ同士を一体に連結して前記隙間を保持する隙間保持リブを備え、前記隙間保持リブは、渦巻形状に沿って等間隔で設けられていることを特徴とする。
さらに、前記隙間保持リブは、風が吹き出す方向に沿って傾斜していることが好ましい。さらに、前記隙間保持リブは、渦巻形状に沿って等間隔で設けられファンガード自体の強度やファンガードへの指の挿入防止という安全性を確保できる最小限の数の隙間保持リブの数であることが一層好ましい。さらに、これら隙間保持リブの風の流れに沿った断面形状は流線形とすることが好ましい。 In order to solve the above-mentioned problems, the fan guard of the present invention is a fan guard for guarding a propeller fan, wherein an outer peripheral ring portion, a closing plate portion disposed at the center of the outer peripheral ring portion, and one end of the outer peripheral ring portion. The other end is integrally connected to the closing plate part and is arranged in the circumferential direction so that the width of the gap is substantially the same over the entire length, and the whole is tangential to the circumference discharged by the rotation of the propeller fan. A plurality of spiral ribs that form a spiral gap that substantially matches the flow of the wind, and a gap retaining rib that holds the gap by connecting the spiral ribs together between adjacent spiral ribs The gap holding ribs are provided at regular intervals along a spiral shape .
Et al is, the gap holding ribs are preferably inclined along the direction for blowing wind. Further, the gap holding ribs are the minimum number of gap holding ribs that are provided at equal intervals along the spiral shape and that can ensure the safety of the strength of the fan guard itself and the prevention of finger insertion into the fan guard. More preferably. Furthermore, it is preferable that the cross-sectional shape along the wind flow of these clearance holding ribs is streamlined.

また、本発明の送風機は、プロペラファンと、このプロペラファンの吹出側に対応してファンガードとを備えた送風機において、前記ファンガードが、外周リング部と、この外周リング部の中心に配置される閉塞板部と、一端を前記外周リング部へ一体に連結され他端を前記閉塞板部へ一体に連結されて周方向に配列され隙間の幅が全長に渡り略同一幅であり全体でプロペラファンの回転により吐出される円周と接線方向の風の流れに略一致する渦巻状の隙間を形成する複数の渦巻リブとを備え、前記ファンガードが、互いに隣り合う渦巻リブ同士間に、この渦巻リブ同士を一体に連結して前記隙間を保持する隙間保持リブを備え、前記隙間保持リブは、渦巻形状に沿って等間隔で設けられていることを特徴とする。
さらに、前記隙間保持リブは、風が吹き出す方向に沿って傾斜していることが好ましい。さらに、前記隙間保持リブは、渦巻形状に沿って等間隔で設けられファンガード自体の強度やファンガードへの指の挿入防止という安全性を確保できる最小限の数の隙間保持リブの数であることが一層好ましい。さらに、これら隙間保持リブの風の流れに沿った断面形状は流線形とすることが好ましい。 Further, the blower of the present invention is a blower provided with a propeller fan and a fan guard corresponding to the blowing side of the propeller fan, wherein the fan guard is arranged at the outer ring part and at the center of the outer ring part. A closed plate portion, one end of which is integrally connected to the outer ring portion and the other end of the closed plate portion is integrally connected to the closed plate portion, arranged in the circumferential direction, and the width of the gap is substantially the same over the entire length. A plurality of spiral ribs forming a spiral gap that substantially coincides with the circumference of the tangential air flow and the circumference discharged by the rotation of the fan, and the fan guard is disposed between the adjacent spiral ribs. A gap holding rib for holding the gap by integrally connecting the spiral ribs is provided, and the gap holding rib is provided at regular intervals along a spiral shape .
Et al is, the gap holding ribs are preferably inclined along the direction for blowing wind. Further, the gap holding ribs are the minimum number of gap holding ribs that are provided at equal intervals along the spiral shape and that can ensure the safety of the strength of the fan guard itself and the prevention of finger insertion into the fan guard. More preferably. Furthermore, it is preferable that the cross-sectional shape along the wind flow of these clearance holding ribs is streamlined.

また、本発明の空気調和装置は、熱交換した空気の吹出口を備える外箱内にプロペラファンを前記吹出口に対応して収容すると共に前記吹出口にファンガードを備える空気調和装置において、前記ファンガードが、外周リング部と、この外周リング部の中心に配置される閉塞板部と、一端を前記外周リング部へ一体に連結され他端を前記閉塞板部へ一体に連結されて周方向に配列され隙間の幅が全長に渡り略同一幅であり全体でプロペラファンの回転により吐出される円周と接線方向の風の流れに略一致する渦巻状の隙間を形成する複数の渦巻リブとを備え、前記ファンガードが、互いに隣り合う渦巻リブ同士間に、この渦巻リブ同士を一体に連結して前記隙間を保持する隙間保持リブを備え、前記隙間保持リブは、渦巻形状に沿って等間隔で設けられていることを特徴とする。
さらに、前記隙間保持リブは、風が吹き出す方向に沿って傾斜していることが好ましい。さらに、前記隙間保持リブは、渦巻形状に沿って等間隔で設けられファンガード自体の強度やファンガードへの指の挿入防止という安全性を確保できる最小限の数の隙間保持リブの数であることが一層好ましい。さらに、これら隙間保持リブの風の流れに沿った断面形状は流線形とすることが好ましい。
Further, the air conditioner of the present invention is an air conditioner in which a propeller fan is accommodated in an outer box having a heat-exchanged air outlet and corresponding to the outlet, and a fan guard is provided at the outlet. A fan guard is connected to the outer peripheral ring portion, a closing plate portion disposed at the center of the outer peripheral ring portion, and one end thereof is integrally connected to the outer peripheral ring portion, and the other end is integrally connected to the closing plate portion. A plurality of spiral ribs that form a spiral gap that is substantially the same width over the entire length and substantially coincides with the circumference discharged by the rotation of the propeller fan and the tangential wind flow. The fan guard includes a gap holding rib that connects the spiral ribs together to hold the gap between adjacent spiral ribs, and the gap holding rib follows a spiral shape, etc. interval And it is provided.
Et al is, the gap holding ribs are preferably inclined along the direction for blowing wind. Further, the gap holding ribs are the minimum number of gap holding ribs that are provided at equal intervals along the spiral shape and that can ensure the safety of the strength of the fan guard itself and the prevention of finger insertion into the fan guard. More preferably. Furthermore, it is preferable that the cross-sectional shape along the wind flow of these clearance holding ribs is streamlined.

本発明によれば、放射リブと円環リブとを備えてなる従来のファンガードとは異なり、開口面積を閉塞板部の周囲近傍でも外周部と同等に大きく確保でき、送風抵抗が軽減され、送風音が減少する。しかも、間隙保持リブによってファンガードの強度や安全性は確保できる。   According to the present invention, unlike a conventional fan guard comprising a radiating rib and an annular rib, the opening area can be secured as large as the outer peripheral portion in the vicinity of the closing plate portion, and the blowing resistance is reduced. Blowing sound is reduced. In addition, the strength and safety of the fan guard can be secured by the gap holding rib.

以下、本発明の一実施形態を添付した図面を参照して説明する。
この実施形態は、本発明の空気調和装置を室外機ユニットに適用した場合を示す。
図１は、室外機ユニットの斜視図を示す。図２は、プロペラファンとファンガードを示す部分断面図である。この室外機ユニット１０は、外箱１１内の下部に、例えばガスエンジンで駆動される圧縮機、及びそれに接続されて冷凍サイクルを構成する各種機器類（いずれも図示せず）が内蔵されていると共に、外箱１１内の上部に、前記冷凍サイクルを構成する室外側熱交換器（図示せず）とプロペラファン１２が内蔵されている。
このプロペラファン１２は、外箱１１の前面部に形成された熱交換した空気の吹出口１１ａに対応して設置されている。前記吹出口１１ａには、本発明の特徴であるプロペラファンをガードする合成樹脂製のファンガード１３を備えている。 Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
This embodiment shows the case where the air conditioning apparatus of the present invention is applied to an outdoor unit.
FIG. 1 is a perspective view of an outdoor unit. FIG. 2 is a partial cross-sectional view showing a propeller fan and a fan guard. The outdoor unit 10 includes a compressor driven by, for example, a gas engine, and various devices (not shown) connected to the refrigeration cycle in the lower portion of the outer box 11. In addition, an outdoor heat exchanger (not shown) and a propeller fan 12 constituting the refrigeration cycle are built in an upper portion of the outer box 11.
The propeller fan 12 is installed corresponding to a heat exchanged air outlet 11 a formed in the front portion of the outer box 11. The air outlet 11a is provided with a synthetic resin fan guard 13 that guards the propeller fan, which is a feature of the present invention.

図３（ａ）は、このファンガード１３の正面図を示し、（ｂ）は、（ａ）におけるIIIｂ−IIIｂ矢視図を示す。図４は、このファンガード１３の斜視図を示す。
このファンガード１３は、外周リング部１３ａと、この外周リング部１３ａの中心に配置される閉塞板部１３ｂと、一端を前記外周リング部１３ａへ一体に連結され他端を前記閉塞板部１３ｂへ一体に連結されて周方向に配列され隙間の幅が全長に渡り手指が入らない略同一幅であり全体でプロペラファンの回転により吐出される円周と接線方向の風の流れに略一致する渦巻状の隙間を形成する複数の渦巻リブ１３ｃとを備えてなり、図２に示すように、例えば、外周リング部１３ａが吹出口１１ａに被さりボルト１４で固定されるようになっている。
一の渦巻リブ１３ｃと、この一の渦巻リブ１３ｃの内側及び外側に隣接する渦巻リブ１３ｃとの間の隙間は、外周リング部１３ａに寄った部分から閉塞板部１３ｂに寄った部分まで全長にわたり略均一な幅寸法の隙間とされている。なお、この隙間は、当然のことながら、手指が入らない隙間とされる。 Fig.3 (a) shows the front view of this fan guard 13, (b) shows the IIIb-IIIb arrow directional view in (a). FIG. 4 is a perspective view of the fan guard 13.
The fan guard 13 includes an outer peripheral ring portion 13a, a closing plate portion 13b disposed at the center of the outer peripheral ring portion 13a, one end integrally connected to the outer peripheral ring portion 13a, and the other end connected to the closing plate portion 13b. Spirals that are connected together and arranged in the circumferential direction so that the width of the gap is almost the same width that the fingers do not enter over the entire length, and generally coincides with the circumferential and tangential wind flow discharged by the rotation of the propeller fan And a plurality of spiral ribs 13c that form a gap in the form of a ring. As shown in FIG. 2, for example, the outer peripheral ring portion 13a is fixed to the outlet 11a with a cover bolt 14.
The gap between the one spiral rib 13c and the spiral rib 13c adjacent to the inside and outside of the one spiral rib 13c extends over the entire length from the portion close to the outer peripheral ring portion 13a to the portion close to the closing plate portion 13b. The gap is a substantially uniform width. Note that this gap is, of course, a gap where fingers do not enter.

図５は、一の渦巻リブ１３ｃの曲線を決定する説明図である。図５において、渦巻曲線Ａは、周方向を等分割した放射線と半径寸法が等寸法で大きくなる複数の同心円の線との交点を、Ｐ１，Ｐ２，Ｐ３，・・・の如く、中心側から外周側へ向かって次々にずれた交点を結んで滑らかな曲線として選択したものが、一の渦巻リブ１３ｃの曲線の一例である。そして、隙間の幅が全長に渡り手指が入らない略同一幅となるように周方向の配列ピッチを決めるものである。
図５においては、渦巻曲線Ａの内端Ｐ１と外端Ｐｎとの中心角αを約１２０°としたものであるが、同心円の間隔を細かくして増やすと、この中心角αを適宜に大きくすることができる。図３（ａ）に示す渦巻曲線の中心角αは約３００°となるようにしてある。中心角αが大きければ大きいほど渦巻曲線の曲率半径の増大率が小さくなり、隙間の周方向に対する交差角が小さくなり、これによって、プロペラファンによって起こされる送風抵抗を小さくすることができる。なお、中心角αの数値は限定的ではない。 FIG. 5 is an explanatory diagram for determining the curve of one spiral rib 13c. In FIG. 5, the spiral curve A indicates the intersections between the radiation equally divided in the circumferential direction and a plurality of concentric circles whose radial dimensions are equal and larger from the center side as P1, P2, P3,. An example of a curve of one spiral rib 13c is selected as a smooth curve by connecting intersections that are successively shifted toward the outer peripheral side. Then, the arrangement pitch in the circumferential direction is determined so that the width of the gap is substantially the same width over which the fingers do not enter.
In FIG. 5, the central angle α between the inner end P1 and the outer end Pn of the spiral curve A is about 120 °. However, if the interval between the concentric circles is increased finely, the central angle α is increased appropriately. can do. The center angle α of the spiral curve shown in FIG. 3A is set to about 300 °. The larger the central angle α, the smaller the increase rate of the radius of curvature of the spiral curve, and the smaller the crossing angle with respect to the circumferential direction of the gap, thereby reducing the blowing resistance caused by the propeller fan. The numerical value of the central angle α is not limited.

この実施形態によれば、複数の渦巻リブ１３ｃは、一端を前記外周リング部１３ａへ一体に連結され他端を前記閉塞板部１３ｂへ一体に連結され全長にわたり指が入らない一定幅の隙間となるように周方向に配列され全体でプロペラファンの回転により吐出される円周と接線方向の風の流れに略一致する渦巻状の隙間を形成するように螺旋形状であり、しかも、プロペラファン１２の回転により吐出される円周と接線方向の風の流れに略一致する渦巻状の隙間を形成するので、従来の放射リブと円環リブとからなるファンガードとは異なり、開口面積を中央に配置される閉塞板部の周囲近傍でも大きく確保でき、送風抵抗が軽減され、送風音を減少させることができる。   According to this embodiment, the plurality of spiral ribs 13c are connected to the outer peripheral ring portion 13a with one end and the other end integrally connected to the closing plate portion 13b. In order to form a spiral gap that substantially aligns with the circumferential and tangential wind flow arranged in the circumferential direction so as to be discharged by the rotation of the propeller fan, the propeller fan 12 Unlike the conventional fan guard consisting of radiating ribs and annular ribs, the opening area is centered. A large area can be secured in the vicinity of the periphery of the disposed blocking plate portion, the blowing resistance can be reduced, and the blowing sound can be reduced.

次に、ファンガードについて、他の実施形態を図面を参照して説明する。
図６（ａ）は、この実施形態のファンガード１５の正面図を示し、（ｂ）は、（ａ）におけるVIｂ−VIｂ矢視図を示す。図７は、このファンガード１５の斜視図を示す。
このファンガード１５は、外周リング部１５ａと、閉塞板部１５ｂと、複数の渦巻リブ１５ｃとを備えている構成部分は、図３（ａ）に示すファンガード１３と同一の構成である。
このファンガード１５は、互いに隣り合う渦巻リブ１５ｃ、１５ｃ同士間に、この渦巻リブ１５ｃ、１５ｃ同士を一体に連結して子供が指を入れることができない隙間ピッチを保持する隙間保持リブ１５ｄを備えている。そして、隙間保持リブ１５ｄは、風が吹き出す方向に沿って傾斜している。さらに、隙間保持リブ１５ｄは、渦巻形状に沿って等間隔で設けられている。さらに隙間保持リブ１５ｄは、渦巻形状に沿って等間隔で設けられファンガード自体の強度やファンガードへの指の挿入防止という安全性を確保できる最小限の数の隙間保持リブの数であることが一層好ましい。さらに、これら隙間保持リブ１５ｄの風の流れに沿った断面形状は流線形とすることが好ましい。
この実施形態は、隙間保持リブ１５ｄがあることで、外周リング部１５ａと閉塞板部１５ｂとを繋いでいる複数の渦巻リブ１５ｃの厚みが小さくても良くなる点では、実施上有利になる。
この実施形態のファンガード１５は、隙間保持リブ１５ｄを従来の放射リブとは異なり、渦巻リブ間の隙間の長手方向に一定間隔に設けることができるので、従来の放射リブと環状リブとからなるファンガードとは異なり、開口面積を中央に配置される閉塞板部１５ｂの周囲近傍でも大きく確保でき、隙間保持リブ１５ｄがあるが、風が吹き出す方向に沿って傾斜しているので、送風抵抗が大きくならず、従来の放射リブと円環リブとからなるファンガードに比して送風抵抗が軽減され、送風音を減少させることができる。 Next, another embodiment of the fan guard will be described with reference to the drawings.
Fig.6 (a) shows the front view of the fan guard 15 of this embodiment, (b) shows the VIb-VIb arrow line view in (a). FIG. 7 shows a perspective view of the fan guard 15.
The fan guard 15 has the same configuration as that of the fan guard 13 shown in FIG. 3A, with the outer ring portion 15a, the blocking plate portion 15b, and the plurality of spiral ribs 15c.
The fan guard 15 is provided with gap holding ribs 15d between the adjacent spiral ribs 15c and 15c so that the spiral ribs 15c and 15c are connected together so as to hold a gap pitch in which a child cannot put a finger. ing. The gap retaining rib 15d is inclined along the direction in which the wind blows. Furthermore, the gap holding ribs 15d are provided at equal intervals along the spiral shape. Further, the gap holding ribs 15d are provided at equal intervals along the spiral shape, and are the minimum number of gap holding ribs that can ensure the safety of the strength of the fan guard itself and the prevention of finger insertion into the fan guard. Is more preferable. Furthermore, it is preferable that the cross-sectional shape along the wind flow of the gap retaining ribs 15d is streamlined.
This embodiment is advantageous in practice in that the presence of the gap holding ribs 15d makes it possible to reduce the thickness of the plurality of spiral ribs 15c connecting the outer peripheral ring portion 15a and the closing plate portion 15b.
Unlike the conventional radiation rib, the fan guard 15 of this embodiment can be provided at regular intervals in the longitudinal direction of the gap between the spiral ribs, unlike the conventional radiation rib. Therefore, the fan guard 15 includes the conventional radiation rib and the annular rib. Unlike the fan guard, the opening area can be secured large in the vicinity of the periphery of the blocking plate portion 15b disposed in the center, and there is a gap holding rib 15d, but since the airflow is inclined along the direction in which the wind blows, the blowing resistance The blowing resistance is reduced as compared with a conventional fan guard composed of radiation ribs and annular ribs, and the blowing noise can be reduced.

第１の実施形態では、空気調和装置を室外機ユニットに適用した場合を示したが、プロペラファンに対応してファンガードを備えた送風機にも広く適用されうる。
図示しないが、この送風機は、プロペラファンと、図３（ａ）に示すファンガード１３または図６（ａ）に示すファンガード１５を備えている。プロペラファンは、ファンガード１３または１５以外の部分も、ファンガードで囲まれた構成であって差し支えない。ファンガード１３または１５以外の部分のファンガードは、縦リブと横リブとで構成されていたり、或いは、放射リブと環状リブとで構成されていても良い。この送風機は、外箱内にプロペラファンが収容されていて、外箱の前面部に形成された吹出口に対応して図３（ａ）に示すファンガード１３または図６（ａ）に示すファンガード１５を備えている構成でも良い。 In 1st Embodiment, although the case where the air conditioning apparatus was applied to the outdoor unit was shown, it can apply widely also to the air blower provided with the fan guard corresponding to the propeller fan.
Although not shown, this blower includes a propeller fan and a fan guard 13 shown in FIG. 3A or a fan guard 15 shown in FIG. The propeller fan may have a configuration in which portions other than the fan guard 13 or 15 are surrounded by the fan guard. The part of the fan guard other than the fan guard 13 or 15 may be constituted by vertical ribs and horizontal ribs, or may be constituted by radiation ribs and annular ribs. In this blower, a propeller fan is accommodated in the outer box, and the fan guard 13 shown in FIG. 3 (a) or the fan shown in FIG. 6 (a) corresponding to the air outlet formed in the front portion of the outer box. The structure provided with the guard 15 may be sufficient.

以上、図面を参照して本発明の電子機器の実施形態を詳述してきたが、本発明は、上記の実施形態に限定されるものではなく、要旨を逸脱しない範囲で適宜に設計変更可能である。
例えば、第１の実施形態では、外周リング部１３ａは円環状であり、閉塞板部１３ｂは円板状であるが、それぞれ矩形に変更させて、渦巻リブ１３ｃをこれに対応させる設計変更が可能であり、このような場合も含まれる。
第１の実施形態では、吹出口１１ａが前面（立面）に設けられているが、上面に設けられていても良い。
第１の実施形態では、ファンガード１３が全体として平面上に成形されているが、吹き出し方向に向かって凸となるように立体的に成形されていても良い。また、ファンガード１３の吹出口１１ａへの取付は、図２に示す固定手段に限定されない。
第１の実施形態では、空気調和装置を室外機ユニットに適用した場合を示したが、室内機ユニットにも適用されうる。 As mentioned above, although the embodiment of the electronic device of the present invention has been described in detail with reference to the drawings, the present invention is not limited to the above-described embodiment, and can be appropriately changed in design without departing from the gist. is there.
For example, in the first embodiment, the outer peripheral ring portion 13a has an annular shape and the closing plate portion 13b has a disk shape. However, it is possible to change the design so that the spiral rib 13c corresponds to this by changing the shape to a rectangle. Such cases are also included.
In 1st Embodiment, although the blower outlet 11a is provided in the front surface (elevation surface), you may provide in the upper surface.
In the first embodiment, the fan guard 13 is formed on a plane as a whole, but may be three-dimensionally formed so as to be convex in the blowing direction. Moreover, attachment to the blower outlet 11a of the fan guard 13 is not limited to the fixing means shown in FIG.
In 1st Embodiment, although the case where the air conditioning apparatus was applied to the outdoor unit was shown, it can be applied also to an indoor unit.

本発明の室外機ユニットの斜視図である。It is a perspective view of the outdoor unit of the present invention. プロペラファンとファンガードを示す部分断面図である。It is a fragmentary sectional view showing a propeller fan and a fan guard. （ａ）はファンガードの正面図を示し、（ｂ）は側面図を示す。(A) shows the front view of a fan guard, (b) shows a side view. ファンガードの斜視図を示す。The perspective view of a fan guard is shown. 渦巻リブの曲線を決定する説明図である。It is explanatory drawing which determines the curve of a spiral rib. （ａ）は他の実施形態のファンガードの正面図を示し、（ｂ）は側面図を示す。(A) shows the front view of the fan guard of other embodiments, and (b) shows the side view. ファンガードの斜視図を示す。The perspective view of a fan guard is shown.

符号の説明Explanation of symbols

１０ 室外機ユニット（空気調和装置）
１１ 外箱
１１ａ 吹出口
１２ プロペラファン
１３ ファンガード
１３ａ 外周リング部
１３ｂ 閉塞板部
１３ｃ 渦巻リブ
１５ ファンガード
１５ａ 外周リング部
１５ｂ 閉塞板部
１５ｃ 渦巻リブ
１５ｄ 隙間保持リブ

10 Outdoor unit (air conditioner)
DESCRIPTION OF SYMBOLS 11 Outer box 11a Air outlet 12 Propeller fan 13 Fan guard 13a Outer ring part 13b Closure board part 13c Spiral rib 15 Fan guard 15a Peripheral ring part 15b Closure board part 15c Swirl rib 15d Gap holding rib

Claims (6)

プロペラファンをガードするファンガードにおいて、
外周リング部と、この外周リング部の中心に配置される閉塞板部と、一端を前記外周リング部へ一体に連結され他端を前記閉塞板部へ一体に連結されて周方向に配列され隙間の幅が全長に渡り略同一幅であり全体でプロペラファンの回転により吐出される円周と接線方向の風の流れに略一致する渦巻状の隙間を形成する複数の渦巻リブとを備え、互いに隣り合う渦巻リブ同士間に、この渦巻リブ同士を一体に連結して前記隙間を保持する隙間保持リブを備え、前記隙間保持リブは、渦巻形状に沿って等間隔で設けられていることを特徴とするファンガード。 In the fan guard that guards the propeller fan,
An outer peripheral ring portion, a closing plate portion disposed at the center of the outer peripheral ring portion, and one end integrally connected to the outer peripheral ring portion and the other end integrally connected to the closing plate portion and arranged in the circumferential direction. and a plurality of spiral ribs having a width to form a spiral-shaped gap that substantially coincides with the wind flow in the circumferential and tangential ejected by the rotation of the propeller fan across a substantially identical width over the entire length, from each other A gap holding rib for holding the gap by connecting the spiral ribs together is provided between adjacent spiral ribs, and the gap holding ribs are provided at regular intervals along a spiral shape. A fan guard. 前記隙間保持リブは、風が吹き出す方向に沿って傾斜していることを特徴とする請求項１記載のファンガード。 The gap holding rib, a fan guard according to claim 1, wherein the inclined along the direction in which the blowing wind. プロペラファンと、このプロペラファンの吹出側に対応してファンガードとを備えた送風機において、
前記ファンガードが、外周リング部と、この外周リング部の中心に配置される閉塞板部と、一端を前記外周リング部へ一体に連結され他端を前記閉塞板部へ一体に連結されて周方向に配列され隙間の幅が全長に渡り略同一幅であり全体でプロペラファンの回転により吐出される円周と接線方向の風の流れに略一致する渦巻状の隙間を形成する複数の渦巻リブとを備え、前記ファンガードが、互いに隣り合う渦巻リブ同士間に、この渦巻リブ同士を一体に連結して前記隙間を保持する隙間保持リブを備え、前記隙間保持リブは、渦巻形状に沿って等間隔で設けられていることを特徴とする送風機。 In a blower equipped with a propeller fan and a fan guard corresponding to the blowing side of the propeller fan,
The fan guard includes an outer peripheral ring portion, a closing plate portion disposed at the center of the outer peripheral ring portion, one end integrally connected to the outer peripheral ring portion, and the other end integrally connected to the closing plate portion. A plurality of spiral ribs that form a spiral gap that is arranged in the direction and has a substantially equal width over the entire length and that substantially matches the circumferential and tangential wind flow discharged by the rotation of the propeller fan. The fan guard includes a gap holding rib that connects the spiral ribs together to hold the gap between adjacent spiral ribs, and the gap holding rib has a spiral shape. A blower characterized by being provided at equal intervals . 前記隙間保持リブは、風が吹き出す方向に沿って傾斜していることを特徴とする請求項３記載の送風機。 The blower according to claim 3 , wherein the gap holding rib is inclined along a direction in which wind blows. 熱交換した空気の吹出口を備える外箱内にプロペラファンを前記吹出口に対応して収容すると共に前記吹出口にファンガードを備える空気調和装置において、
前記ファンガードが、外周リング部と、この外周リング部の中心に配置される閉塞板部と、一端を前記外周リング部へ一体に連結され他端を前記閉塞板部へ一体に連結されて周方向に配列され隙間の幅が全長に渡り略同一幅であり全体でプロペラファンの回転により吐出される円周と接線方向の風の流れに略一致する渦巻状の隙間を形成する複数の渦巻リブとを備え、前記ファンガードが、互いに隣り合う渦巻リブ同士間に、この渦巻リブ同士を一体に連結して前記隙間を保持する隙間保持リブを備え、前記隙間保持リブは、渦巻形状に沿って等間隔で設けられていることを特徴とする空気調和装置。 In an air conditioner that accommodates a propeller fan in the outer box having a heat-exchanging air outlet, corresponding to the outlet, and a fan guard at the outlet,
The fan guard includes an outer peripheral ring portion, a closing plate portion disposed at the center of the outer peripheral ring portion, one end integrally connected to the outer peripheral ring portion, and the other end integrally connected to the closing plate portion. A plurality of spiral ribs that form spiral gaps that are arranged in the direction and have substantially the same width over the entire length and that generally match the circumferential and tangential wind flow discharged by the rotation of the propeller fan. The fan guard includes a gap holding rib that connects the spiral ribs together to hold the gap between adjacent spiral ribs, and the gap holding rib has a spiral shape. An air conditioner provided at equal intervals . 前記隙間保持リブは、風が吹き出す方向に沿って傾斜していることを特徴とする請求項５記載の空気調和装置。 The air conditioning apparatus according to claim 5 , wherein the gap holding rib is inclined along a direction in which wind blows.
JP2005287362A 2005-09-30 2005-09-30 Fan guard, blower, and air conditioner Expired - Fee Related JP4721854B2 (en)

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