JP6425325B2 - Guide plate of plug fan in air conditioner - Google Patents

Guide plate of plug fan in air conditioner Download PDF

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JP6425325B2
JP6425325B2 JP2012281910A JP2012281910A JP6425325B2 JP 6425325 B2 JP6425325 B2 JP 6425325B2 JP 2012281910 A JP2012281910 A JP 2012281910A JP 2012281910 A JP2012281910 A JP 2012281910A JP 6425325 B2 JP6425325 B2 JP 6425325B2
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guide plate
plug fan
plate portion
curve
fan
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JP2014125922A (en
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伸一 有薗
伸一 有薗
恒有 田中
恒有 田中
広司 宮内
広司 宮内
剛 横川
剛 横川
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Sinko Industries Ltd
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Priority to CN201380002505.5A priority patent/CN104641122A/en
Priority to PCT/JP2013/062160 priority patent/WO2014103396A1/en
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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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)

Description

本発明は、空気調和機の送風機、特に、二枚の回転円板に回転中心から外側に向かう複数の翼部を配置して遠心力を用いて送風するプラグファンのガイド板部の技術分野に属する。   The present invention relates to the technical field of a fan of an air conditioner, in particular, a guide plate portion of a plug fan which arranges a plurality of wing portions directed outward from a rotation center on two rotating disks and blows using centrifugal force. Belongs.

従来、空気調和機の送風機は、二枚の回転円板に回転中心から外側に向かう複数の翼部を配置し、翼部と空気の遠心力を用いて送風する送風機、例えば、翼型送風機、チューブラ送風機、プラグファン等の遠心送風機が多用される傾向にある。
ところで、これら送風機にプラグファンを用いた空気調和機において、プラグファンは本来ハウジングが不要な送風機(図１(ａ))（例えば、特開平11-304181号公報：特許文献３：段落0017）であるが、特許文献１(特開2005-331212号公報)等に示すように、適切なガイド板部を設けることによって静圧効率を上げることができる。このガイド板部の側面からの形状は、図１(ｂ)に示すように、一般的に理想のアルキメデス曲線が良いとされており使用されている。
一般的に遠心翼型ファンである周知のプラグファンは、例えば、特開2005-16791号(特許文献２：段落0014)に開示されるように、給気室内のデッドスペースを少なくして給気室自体も小型・コンパクトにできるが、送風機としてプラグファンは、他の送風機と比べて静圧効率がよいとされている。
なお、アルキメデスの曲線(螺旋)(Archimedes' spiral)は、極座標の方程式によって表される曲線である。曲線の半径(ｒ)は下式で表され、角度(θ)が大きくなるしたがい、次第に大きな径となる等間隔の渦巻きである。
r = a θ（a は定数で、(2/π)に設定する。）
全体としては後述する図１(ｂ)のガイド板部Ｂのようになる。
Conventionally, in a blower of an air conditioner, a plurality of wing portions extending outward from the rotation center are disposed on two rotating disks, and the blades and the air are blown using centrifugal force, for example, a wing type fan, Centrifugal fans such as tubular fans and plug fans tend to be used frequently.
By the way, in an air conditioner using a plug fan for these fans, the plug fan is a fan (FIG. 1 (a)) which does not require a housing originally (for example, JP 11-304181 A: Patent Document 3: Paragraph 0017). As described in Patent Document 1 (Japanese Patent Laid-Open No. 2005-331212) and the like, the static pressure efficiency can be increased by providing an appropriate guide plate portion. As shown in FIG. 1 (b), the shape of the guide plate portion from the side is generally considered to be an ideal Archimedean curve and is used.
A known plug fan which is generally a centrifugal wing fan, for example, reduces the dead space in the air supply chamber as disclosed in Japanese Patent Laid-Open No. 2005-16791 (Patent Document 2: Paragraph 0014). Although the chamber itself can be made compact and compact, a plug fan as a blower is considered to have a better static pressure efficiency than other blowers .
Note that Archimedes' curve (helix) is a curve represented by a polar coordinate equation. The radius (r) of the curve is expressed by the following equation, and is an equally-spaced spiral which becomes gradually larger in diameter as the angle (θ) becomes larger.
r = a θ (a is a constant and is set to (2 / π))
As a whole, it becomes like the guide plate part B of FIG. 1 (b) mentioned later.

特開２００５−３３１２１２号公報JP 2005-331212 A 特開２００５−１６７９１号公報JP, 2005-16791, A 特開平１１−３０４１８１号公報Japanese Patent Application Laid-Open No. 11-304181

ところで、プラグファンのガイド板部にアルキメデス曲線を用いたプラグファン室は、ガイド板部が無い場合に比べて大きな体積を必要となるといった問題点があり、結果としてプラグファン室が大きくなってしまうという問題点があった。 本発明は、このような問題点に鑑みてなされたもので、プラグファンのガイド板部にアルキメデス曲線を用いた場合の効率を落とさず、コンパクトなガイド板部及びプラグファン室を提供することにある。   By the way, the plug fan chamber using the Archimedean curve in the guide plate portion of the plug fan has a problem that a larger volume is required as compared with the case without the guide plate portion, and as a result, the plug fan chamber becomes large. There was a problem of that. The present invention has been made in view of such problems, and to provide a compact guide plate portion and a plug fan chamber without lowering the efficiency when the Archimedean curve is used for the guide plate portion of the plug fan. is there.

上記課題を解決するために、請求項１の発明は、空気調和機のプラグファンの翼の遠心方向のファン吹き出し側にガイド板部を設け、
該ガイド板部はプラグファンの送風口の上部の湾曲案内上部からＵ字状底部及び上部壁面に続く補正アルキメデス曲線を形成するものであって、該ガイド板部の形状を、理想のアルキメデス曲線から左右方向にガイド板の左右全体を６８４／７６４倍〜９２／１００倍に縮小した形状にし、かつ、前記ガイド板の下端部とプラグファンの中心との距離を、理想のアルキメデス曲線からプラグファン中心からの距離に対して１１０／１００倍〜１３５／１００倍とした形状とし、かつ、該ガイド板部の材質を柔軟な板状部材としたことを特徴とする空気調和機におけるプラグファンのガイド板部である。
In order to solve the above-mentioned subject, invention of Claim 1 provides a guide plate part in the fan blow-off side of the centrifugal direction of the wing of the plug fan of an air conditioner,
The guide plate portion forms a corrected Archimedean curve extending from the curved guide upper portion of the upper portion of the air outlet of the plug fan to the U-shaped bottom portion and the upper wall surface, and the shape of the guide plate portion is an ideal Archimedean curve. The left and right of the guide plate is reduced by 684/764 times to 92/100 times the entire left and right guide plates, and the distance between the lower end of the guide plate and the center of the plug fan is the ideal Archimedean curve to the plug fan center The guide plate of the plug fan in the air conditioner is characterized in that the shape is 110/100 times to 135/100 times the distance from and the material of the guide plate portion is a flexible plate-like member. It is a department.

本発明の空気調和機におけるプラグファンのガイド板部によれば、ガイド板部の形状を、理想のアルキメデス曲線に比較して、左右側の全体を所定幅に狭めた形状とし、下端部分を全体に下方の所定幅に下げて補正アルキメデス曲線として、幅方向にコンパクトにしても、プラグファンのガイド板部に通常のアルキメデス曲線を用いた場合の総合静圧効率(図５(ｂ))を落すことがないという効果があり、このように、総合静圧効率を落とすことなくプラグファン室の左右幅を縮小しコンパクトなプラグファン室を形成することができる。
According to the guide plate portion of the plug fan in the air conditioner of the present invention, the shape of the guide plate portion is made narrower on the left and right sides to a predetermined width in comparison with the ideal Archimedes curve, and the lower end portion is entirely The overall static pressure efficiency (Fig. 5 (b)) is lowered when the normal Archimedean curve is used for the guide plate portion of the plug fan even if it is compacted in the width direction as a corrected Archimedean curve by lowering it to a predetermined width below. it has the effect that there is no, thus, overall static pressure efficiency by reducing the lateral width of the plug fan chamber without decreasing the Ru can be formed compact plug fan chamber.

図１(ａ)は従来のガイド板部がないプラグファン室の側面図で、図１(ｂ)は通常の理想のアルキメデス曲線を用いたガイド板部の側面形状の側面図で、図１(ｃ)は、本発明の実施例のガイド板部の側面形状の側面図、1 (a) is a side view of a conventional plug fan chamber without a guide plate portion, and FIG. 1 (b) is a side view of the side shape of a guide plate portion using a normal ideal Archimedes curve. c) is a side view of the side shape of the guide plate portion according to the embodiment of the present invention; 実施例のプラグファン室の側断面、Side cross section of the plug fan chamber of the embodiment 図２の正面断面図、Front sectional view of FIG. 2; 図２の斜視図、A perspective view of FIG. 図５(ａ)は、ガイド板部が無い場合と、従来の理想のアルキメデス曲線のガイド板部の場合の風量に対する総合静圧効率％の比較のグラフ、図５(ｂ)は、ガイド板部が無い場合と、実施例の補正アルキメデス曲線のガイド板部の場合の風量に対する総合静圧効率％の比較のグラフの図、FIG. 5 (a) is a graph comparing the total static pressure efficiency% with the air volume in the case where there is no guide plate and in the case of a conventional ideal Archimedes curve guide plate, and FIG. 5 (b) is a guide plate A graph of the comparison of the overall static pressure efficiency% against the air volume in the case of no guide and in the case of the guide plate part of the correction Archimedes curve of the embodiment, 図１(ｃ)の「Ｂ」(点線)の従来の理想のアルキメデス曲線のガイド板部の場合と、図１(ｃ)の「Ｂ」の左右側のガイド板部を縮小した「Ｄ」の場合の総合静圧効率％のピーク部(拡大)比較のグラフの図である。In the case of the conventional ideal Archimedean curve guide plate portion of “B” (dotted line) in FIG. 1C, and “D” obtained by reducing the left and right guide plate portions of “B” in FIG. It is a figure of the graph of the peak part (enlargement) comparison of overall static pressure efficiency% in the case.

プラグファンを用いた空気調和機において、プラグファンは本来ハウジングが不要な送風機(図１(ａ))であるが、一般的に側面形状が理想のアルキメデス曲線のガイド板部を設けることによって効率を上げることができるが(図１(ｂ))、このガイド板部を用いるとガイド板部が無い場合に比べて、プラグファン室に大きな体積を必要としていた。本発明は、図１(ｃ)に示すように、プラグファンの回転軸を駆動モータの回転軸に直結した空気調和機のプラグファンの吹き出し側のガイド板部において、ガイド板部の形状を、理想のアルキメデス曲線に比較して、左右側の全体を所定幅に狭め、下端部分を全体に下方の所定幅に下げて補正アルキメデス曲線としたものである。なお、本実施例ではプラグファンの回転軸を駆動モータの回転軸に直結させているが、駆動伝達系にギヤ等を介在させてもよい。 以下、本発明の好適な空気調和機におけるプラグファンのガイド板部の実施例を図面に沿って説明する。   In an air conditioner using a plug fan, the plug fan is a fan that does not require a housing originally (Fig. 1 (a)), but the efficiency is generally achieved by providing an Archimedean curved guide plate portion whose side surface shape is ideal. Although it can be raised (FIG. 1 (b)), the use of this guide plate portion requires a large volume in the plug fan chamber as compared with the case without the guide plate portion. According to the present invention, as shown in FIG. 1C, in the guide plate portion of the air outlet side of the plug fan of the air conditioner in which the rotary shaft of the plug fan is directly connected to the rotary shaft of the drive motor, Compared to the ideal Archimedes curve, the entire left and right sides are narrowed to a predetermined width, and the lower end portion is entirely lowered to a predetermined width below to obtain a corrected Archimedean curve. Although in the present embodiment the rotary shaft of the plug fan is directly connected to the rotary shaft of the drive motor, a gear or the like may be interposed in the drive transmission system. An embodiment of a guide plate portion of a plug fan in a preferred air conditioner of the present invention will be described below with reference to the drawings.

図２は、本実施例のプラグファン室１の直方体２の側面からの断面図であり、図３は本実施例のプラグファン室１の直方体２の正面からの断面図であり、図２の直方体２の前面21には円形の空気が流入するベルマウス状の固定開口部３を設け、ファン室１にはプラグファン４が駆動モータ５に直結されて設けられ、この駆動モータ５は前面21の対向する後面22の外部であって、底部25の延長上に強固な台形の駆動モータ取付架台51に取り付けられている。
固定開口部３は、図２から４に示すように、直方体２の前のインレットコーン３１から空気を吸い込み、プラグファン４の回転中心の空洞部44に導くもので、前面21に固定されている。このプラグファン４は、ランナとなる二枚の上円形外枠41と下円形外枠42から構成され、この二枚の左右円形外枠41,42の間には複数のブレード43が固着され、固定開口部３に続く中心空洞部44の周りに回転中心から外側に向かうように、ブレード43の複数枚が円周上に等間隔に配置してあり、空気自体の遠心力によって、側面の送風口45から円周方向に放出される。 FIG. 2 is a cross-sectional view from the side of the rectangular parallelepiped 2 of the plug fan chamber 1 of the present embodiment, and FIG. 3 is a cross-sectional view from the front of the rectangular parallelepiped 2 of the plug fan chamber 1 of the present embodiment The front face 21 of the rectangular parallelepiped 2 is provided with a bell mouth-shaped fixed opening 3 into which circular air flows, and the fan room 1 is provided with a plug fan 4 directly connected to the drive motor 5. The drive motor mount 51 is attached to a rigid trapezoidal drive motor mount 51 on the extension of the bottom 25 and outside the opposite rear face 22 of the.
The fixed opening 3 sucks air from the inlet cone 31 in front of the rectangular parallelepiped 2 and guides it to the hollow portion 44 of the rotation center of the plug fan 4 as shown in FIGS. 2 to 4 and is fixed to the front surface 21. . The plug fan 4 is composed of two upper and lower outer frames 41 and 42 serving as runners, and a plurality of blades 43 are fixed between the left and right outer frames 41 and 42. A plurality of blades 43 are arranged at equal intervals on the circumference so as to go outward from the rotation center around the central cavity 44 following the fixed opening 3, and the side air is blown by the centrifugal force of the air itself. It is discharged from the mouth 45 in the circumferential direction.

前述した対向する前後面21,22に直交する右側面23と左側面24の内部にはプラグファン４の送風口45が位置し、これに対向するようにガイド板部６を設けるが、ガイド板部６は送風口45の対向位置には底部61がＵ字状のガイド(送風案内部材)６であって、柔軟な材質の板状部材よりなり、Ｕ字状底部61の両端はプラグファン室１の直方体２の右側面23と左側面24の上部の壁面に固定手段71,72によって固定される。また、同様に、送風口45の上部の対向位置には湾曲案内上部62は、先端部を固定手段73、Ｕ字状底部61に続く上部壁面には固定手段74で固定される。
このように構成することによって、図１(ｃ)に示すように、ガイド板部の形状を、理想のアルキメデス曲線に比較して、左右側の全体を所定幅に狭め、下端部分を全体に下方の所定幅に下げて補正アルキメデス曲線とすることができる。 Inside the right side surface 23 and the left side surface 24 orthogonal to the opposing front and rear surfaces 21 and 22 described above, the air outlet 45 of the plug fan 4 is located, and the guide plate portion 6 is provided to face this. The bottom portion 61 of the portion 6 is a U-shaped guide (blowing guide member) 6 at the opposing position of the vent 45, and is made of a flexible plate-like member. Both ends of the U-shaped bottom portion 61 are plug fan chambers It is fixed to the wall surface of the upper part of the right side 23 and the left side 24 of the rectangular parallelepiped 2 of 1 by the fixing means 71 and 72. Similarly, the curved guiding upper portion 62 is fixed at the tip of the fixing means 73 at the opposing position of the upper portion of the air outlet 45 by the fixing means 74 at the top wall surface continuing to the U-shaped bottom 61.
By this configuration, as shown in FIG. 1C, the shape of the guide plate portion is narrowed to a predetermined width on the left and right sides as compared to the ideal Archimedean curve, and the lower end portion is entirely lowered. To a predetermined width to obtain a corrected Archimedean curve.

次に、上述した実施例の構成による作用・効果を、図５から図７のグラフに示す実測データに基づいて説明する。
図５(ａ)において、(Ａ)図１(a)のガイド板部なしのプラグファン室Ａの場合と、(Ｂ)図１(ｂ)の従来のプラグファン室の理想のアルキメデス曲線のガイド板部Ｂを用いた場合の風量ｍ3／ｈ対する総合靜圧効率％(風量対総合靜圧効率)のグラフである。このグラフに示すように、理想のアルキメデス曲線のガイド板部Ｂを用いることにより、ピーク時には約６.０％の効率が向上する。 Next, the operation and effects of the configuration of the above-described embodiment will be described based on actual measurement data shown in the graphs of FIGS. 5 to 7.
In FIG. 5 (a), (A) the case of the plug fan chamber A without the guide plate portion of FIG. 1 (a), and (B) the guide of the ideal Archimedean curve of the conventional plug fan chamber of FIG. 1 (b). It is a graph of overall pressure drop efficiency% (air volume vs. total pressure drop efficiency) with respect to air volume m 3 / h when plate portion B is used. As shown in this graph, by using the guide plate portion B of the ideal Archimedean curve, the efficiency is improved by about 6.0% at the peak time.

また、図５(ｂ)においては、(Ａ)図１(a)のガイド板部なしのプラグファン室Ａの場合と、(Ｃ)図１(ｃ)は本発明の実施例におけるプラグファン室の補正アルキメデス曲線のガイド板部Ｃを用いた場合の風量ｍ3／ｈ対する総合靜圧効率％のグラフである。このグラフに示すように、補正アルキメデス曲線のガイド板部Ｃを用いることにより、ピーク時には、図５(ｂ)から明らかなように、約６.４％の総合静圧効率が向上する。
図１(ｃ)において、実線Ｃは本実施例における補正アルキメデス曲線のガイド板部Ｃの形状、点線Ｂは従来における理想のアルキメデス曲線のガイド板部の曲線、一点鎖線は左右側のガイド幅を実施例と同様に狭くして、下端部分は従来のアルキメデス曲線のままにしたガイド板部の曲線である。
本実施例では、図１(ｃ)に示すように、ガイド板部の形状を、プラグファンのファンサイズが４００mmの送風装置において、プラグファン室１の左右幅が従来の７６４mmを６８４mm(図４でのＸ)に縮小したもので、左右側のガイド幅が狭い側を２６mm縮小し、広い側を５４mm縮小し、左右両側の合計の所定幅を８０(２６＋５４)mmに狭め、下端部分を全体に下方の所定幅を５０mmに下げ、補正アルキメデス曲線とした実施例である。
すなわち、ガイド板部の形状は、図１(ｃ)に示すように、理想のアルキメデス曲線から左右側をガイド板の左右全体を６８４／７６４倍〜９２／１００倍に縮小した形状にし、かつ、ガイド板の下端部とプラグファンの中心との距離を、理想のアルキメデス曲線の下端部とプラグファンの中心との距離に対して、１１０／１００倍〜１３５／１００倍の範囲内の１１３５／１００倍に下げた形状にしたものである。
Further, in FIG. 5 (b), (A) plug fan chamber A without the guide plate in FIG. 1 (a), and (C) FIG. 1 (c) is a plug fan chamber in the embodiment of the present invention. It is a graph of air pressure m 3 / h at the time of using the guide plate part C of correction | amendment Archimedes curve of, and comprehensive pressure | voltage reduction efficiency% with respect to m 3 / h. As shown in this graph, by using the guide plate portion C of the correction Archimedes curve, the overall static pressure efficiency is improved by about 6.4% at the peak, as is apparent from FIG. 5 (b).
In FIG. 1C, the solid line C represents the shape of the guide plate portion C of the correction Archimedes curve in the present embodiment, the dotted line B represents the curve of the guide plate portion of the conventional Archimedean curve in the prior art, and the alternate long and short dash line represents the guide width on the left and right sides. Similar to the embodiment, the lower end portion is a curve of the guide plate portion which is left as the conventional Archimedean curve.
In the present embodiment, as shown in FIG. 1 (c), the guide plate portion is configured such that, in a blower having a plug fan size of 400 mm, the left and right width of the plug fan chamber 1 is 764 mm as in the prior art. Reduced the narrow side of the guide width by 26 mm and the wide side by 54 mm, narrow the total predetermined width of both left and right sides to 80 (26 + 54) mm, and lower the entire lower part In the embodiment, the lower predetermined width is reduced to 50 mm to make a corrected Archimedes curve.
That is, as shown in FIG. 1 (c), the shape of the guide plate portion is such that the right and left sides of the ideal Archimedes curve are reduced by 684/764 times to 92/100 times the entire left and right guide plates, The distance between the lower end of the guide plate and the center of the plug fan is 1135/100 within the range of 110/100 to 135/100 times the distance between the lower end of the ideal Archimedes curve and the center of the plug fan. It has a doubled shape.

ところで、単純に理想のアルキメデス曲線のガイド板部Ｂの幅を狭めただけでは、大幅に風量ｍ3／ｈ対する総合靜圧効率％の効率が低下するが、本発明の特徴は、ガイド板部の下端部分を下方の所定幅を下げることで、低下した効率を戻すことができることを見出したことを基礎とするものである。
このことを図６で説明すると、図６のグラフは、図１(ｂ)従来の理想のアルキメデス曲線のガイド板部の場合(実線Ｂ)と、図１(ｃ)のＤの形状のガイド板部をアルキメデス曲線の下部はそのままで幅を狭めただけの場合(実線Ｄ)との比較グラフである。このグラフに示すように、単純にアルキメデス曲線のガイド板部の幅を狭めただけでは１.４％も効率が低下してしまうが、図５で説明したように、下端部分を全体に下方の所定幅を下げた補正アルキメデス曲線を採用することにより、従来の理想のアルキメデス曲線のガイド板部と同等の効率が得られ、同時に、本発明の所期の目的である効率を落とすことなくプラグファン室の左右幅を縮小しコンパクトなプラグファン室を形成することができる。 By the way, simply reducing the width of the guide plate portion B of the ideal Archimedes curve greatly reduces the efficiency of the overall pressure reduction efficiency% with respect to the air volume m 3 / h, but the feature of the present invention is that the guide plate portion It is based on the finding that the reduced efficiency can be restored by lowering the lower predetermined width of the lower end portion of.
This will be described with reference to FIG. 6. The graph of FIG. 6 shows the guide plate portion of the conventional Archimedean curve of FIG. 1 (b) (solid line B) and the guide plate of the shape D of FIG. The lower part of the Archimedes curve of the part is a comparison graph with the case (solid line D) only by narrowing the width as it is. As shown in this graph, simply reducing the width of the Archimedean curve guide plate reduces the efficiency by 1.4%, but as explained in FIG. By adopting a corrected Archimedean curve with a predetermined width reduced, an efficiency equivalent to that of the conventional ideal Archimedean curve guide plate portion can be obtained, and at the same time, the plug fan does not drop the efficiency intended by the present invention. The width of the chamber can be reduced to form a compact plug fan chamber.

本実施例では上述のようにプラグファンサイズとプラグファン室のガイド板部の数値を限定したが、ファンサイズが３１０ｍｍから７９０ｍｍの範囲に適用でき、ガイド板部の幅方向のスリム化は、理想のアルキメデス曲線から左右方向に「−８％から−１０％」に縮小、すなわち、ガイド板の左右全体を６８４／７６４倍〜９２／１００倍に縮小した形状にし、６８４ｍｍとした形状にするだけでは効率低下となるため、下端部分を理想のアルキメデス曲線から「１０％〜３５％」下げた形状、すなわち、ガイド板の下端部とプラグファン中心からの距離を１１０／１００倍〜１３５／１００倍とすることで、効率を向上出来ることに着目し、前記縮小による効率低下を補償することができる。
このように、本実施例では、ガイド板の左右全体を７６４ｍｍから６８４ｍｍに縮小し、かつ、プラグファン１の中心からガイド板の下端部との距離３８２ｍｍを、５０ｍｍに下げて４３２ｍｍとし、理想のアルキメデス曲線のガイド板部の下端部とプラグファンの中心からの距離に対して、１１０／１００倍〜１３５／１００倍の範囲内の１１３／１００倍にしたものである。
なお、本発明の特徴を損なうものでなければ、上記の実施例に限定されるものでないことは勿論である。
In the present embodiment, although the plug fan size and the numerical value of the guide plate portion of the plug fan chamber are limited as described above, the fan size can be applied in the range of 310 mm to 790 mm, and slimming of the guide plate portion in the width direction is ideal. The Archimedean curve is reduced to "-8% to -10%" in the left-right direction , that is, the entire left and right of the guide plate is reduced to 684/764 times to 92/100 times , and only to 684 mm In order to reduce the efficiency, the lower end portion is lowered by 10% to 35% from the ideal Archimedes curve, that is, the distance between the lower end of the guide plate and the plug fan center is 110/100 times to 135/100 times. By paying attention to the fact that the efficiency can be improved, it is possible to compensate for the reduction in efficiency due to the reduction .
Thus, in this embodiment, to reduce the overall lateral guide plates from 764mm to 684Mm, and the distance 382mm between the lower end portion of the center to gas id plate of the plug fan 1, and 432mm down to 50 mm, The distance between the lower end of the guide plate portion of the ideal Archimedes curve and the center of the plug fan is 113/100 times within the range of 110/100 times to 135/100 times .
Of course, the present invention is not limited to the above-described embodiment as long as the features of the present invention are not impaired.

Ａ・・・ガイド板部なしプラグファン室、
Ｂ・・・理想のアルキメデス曲線のガイド板部、
Ｃ・・・実施例の補正アルキメデス曲線のガイド板部、
Ｄ・・・理想のアルキメデス曲線部で、左右両側幅を狭めただけのガイド板部、
１・・・プラグファン室、
２・・・直方体、21・・・前面、22・・・後面、
23・・・右側面、24・・・左側面、25・・・底部、
３・・・固定開口部、31・・・インレットコーン、
４・・・プラグファン、41・・・上円形外枠、
42・・・下円形外枠、43・・・ブレード、44・・・空洞部、45・・・送風口、
５・・・駆動モータ、51・・・駆動モータ取付架台、
６・・・ガイド板部（送風案内部材)、61・・・Ｕ字状底部、
62・・・湾曲案内上部、
71,72,73,74・・・固定手段 A: No guide plate, plug fan room,
B: Guide plate part of the ideal Archimedean curve,
C: Guide plate portion of the corrected Archimedean curve of the embodiment,
D: The ideal Archimedes curve section, the guide plate section just narrowing the width on both sides,
1 ... Plug fan room,
2 ··· Rectangular solid, 21 ··· front, 22 ··· rear,
23 ... right side, 24 ... left side, 25 ... bottom,
3 ... fixed opening, 31 ... inlet cone,
4 ... Plug fan, 41 ... Upper circular outer frame,
42 · · · lower circular outer frame, 43 · · · blade, 44 · · · hollow portion, 45 · · · vent,
5 · · · Drive motor, 51 · · · Drive motor mounting stand,
6 ··· Guide plate portion (blowing guide member) 61 ··· U-shaped bottom portion,
62 ・ ・ ・ curved guide upper part,
71, 72, 73, 74 ... fixing means

Claims (1)

空気調和機のプラグファンの翼の遠心方向のファン吹き出し側にガイド板部を設け、
該ガイド板部はプラグファンの送風口の上部の湾曲案内上部からＵ字状底部及び上部壁面に続く補正アルキメデス曲線を形成するものであって、該ガイド板部の形状を、理想のアルキメデス曲線から左右方向にガイド板の左右全体を６８４／７６４倍〜９２／１００倍に縮小した形状にし、かつ、前記ガイド板の下端部とプラグファンの中心との距離を、理想のアルキメデス曲線からプラグファン中心からの距離に対して１１０／１００倍〜１３５／１００倍とした形状とし、かつ、該ガイド板部の材質を柔軟な板状部材としたことを特徴とする空気調和機におけるプラグファンのガイド板部。 Provide a guide plate on the centrifugal fan blowout side of the plug fan blade of the air conditioner,
The guide plate portion forms a corrected Archimedean curve extending from the curved guide upper portion of the upper portion of the air outlet of the plug fan to the U-shaped bottom portion and the upper wall surface, and the shape of the guide plate portion is an ideal Archimedean curve. The left and right of the guide plate is reduced by 684/764 times to 92/100 times the entire left and right guide plates, and the distance between the lower end of the guide plate and the center of the plug fan is the ideal Archimedean curve to the plug fan center The guide plate of the plug fan in the air conditioner is characterized in that the shape is 110/100 times to 135/100 times the distance from and the material of the guide plate portion is a flexible plate-like member. Department.
JP2012281910A 2012-12-26 2012-12-26 Guide plate of plug fan in air conditioner Active JP6425325B2 (en)

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