JPH03229991A - Cross-flow air blower - Google Patents
Cross-flow air blowerInfo
- Publication number
- JPH03229991A JPH03229991A JP2537890A JP2537890A JPH03229991A JP H03229991 A JPH03229991 A JP H03229991A JP 2537890 A JP2537890 A JP 2537890A JP 2537890 A JP2537890 A JP 2537890A JP H03229991 A JPH03229991 A JP H03229991A
- Authority
- JP
- Japan
- Prior art keywords
- impeller
- flow
- partition plate
- plate
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005192 partition Methods 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明（よ 空気調和機の送風機などとして広く用いら
れている横断流送風機において、低騒音（Ｌおよび風量
特性向上をはかった羽根車に関するものである。[Detailed Description of the Invention] Industrial Field of Application The present invention relates to an impeller with low noise (L) and improved air volume characteristics in a cross-flow blower widely used as a blower for an air conditioner, etc. .
従来の技術
一般に横断流送風機は第５図に示す如く羽根車１１を中
心としてその前後にスタビライザ１２およびリアガイダ
１３を配した構成となっている。そして羽根車１１につ
いては両端に円盤状の端板１４を配し両端板間に数枚の
円盤状あるいはドーナツ状の仕切板１５を配設し それ
らの間を多数の翼１１でつないだ構造である。なお端板
１４あるいは仕切板１５で区切られた一区画を通常速と
呼んでいる。第１図の矢印で示すように横断流送風機は
その構造上空気の流入方向と流出方向が逆方向であるこ
と、あるいは送風機を軸方向に延ばすとほぼその長さに
比例して風量が増大するなど他の送風機に見られぬ特長
を有するた敢 近年空気調和機等に広く用いられるよう
になっ九 反皿 横断流送風機は騒音が高く、効率も低
い等の今後解決を要する問題点も有している。特に騒音
について（よ 第５図に示すように上流側の空気の流れ
力丈 吸込翼列１１を通って、羽根車内部に吸い込まれ
さらにその後、吐出翼列を通って流出するということ
て 流れが羽根車翼列を二度通過し かス 流れの方向
を極端に曲げるといった空気抵抗の大きな構成であるた
八 翼端に衝突するときの流れの乱れも 翼上での流れ
のばくり、吹き出される際の後流渦の発生等々、騒音増
大につながる種々の原因をかかえている。また 空気調
和機において（よ 羽根車の上流側に（よ 吸い込みグ
リルや熱交換器などもあり、吸い込み流れを乱すのを増
長させるものも設置されている。これらの流れの乱れか
ら発生する音（よ 一般に乱流騒音と呼ばれ 周波数的
にも人間の耳に敏感に聴える広帯域であり、聴感的に非
常に悪影響を与えてき九 従来 この乱流騒音を低減さ
せる様々の試みがなされている力（その代表的な例を図
によって説明する。第６図（よ 一般的な横断流羽根車
で、翼と翼を長手方向に仕切っている板ζよ 羽根車の
剛性的にも必要である力丈それと同時に、 吸い込み
流れや吹き出し流れの整流作用にも効果がある。また
乱れを低減させることで、サージングや騒音低減にも少
なからず寄与している例である。第７図に示す、他の従
来例として（よ 熱交換器から羽根車に至る空気流路く
空気流れを強制的に偏向・拡大させる少なくとも一枚の
ガイドベーンを配設した空調用のユニットである。これ
も熱交換器の下流の乱れた流れを、整流し スムースに
羽根車に空気を流入させ、騒音の低減効果を図った例
である。2. Description of the Related Art In general, a cross-flow blower has a structure in which a stabilizer 12 and a rear guider 13 are arranged in front and behind an impeller 11, as shown in FIG. The impeller 11 has a structure in which disk-shaped end plates 14 are arranged at both ends, several disk-shaped or doughnut-shaped partition plates 15 are arranged between the two end plates, and a large number of blades 11 are connected between them. be. Note that one section divided by the end plate 14 or the partition plate 15 is called a normal speed. As shown by the arrows in Figure 1, due to the structure of a cross-flow blower, the inflow and outflow directions of air are opposite directions, or when the blower is extended in the axial direction, the air volume increases approximately in proportion to its length. In recent years, cross-flow fans have become widely used in air conditioners, etc. Cross-flow fans also have problems that need to be resolved in the future, such as high noise and low efficiency. ing. Especially regarding noise (as shown in Figure 5, the flow strength of the upstream air is sucked into the impeller through the suction blade row 11, and then flows out through the discharge blade row). The impeller passes through the blade row twice, and the flow direction is extremely bent, which creates a large amount of air resistance. There are various causes that lead to increased noise, such as the generation of trailing vortices when the air is flowing.In addition, in air conditioners, there are also suction grills and heat exchangers upstream of the impeller, which control the suction flow. There are also devices installed to increase the disturbance.The sound generated from these disturbances (commonly called turbulence noise) has a wide frequency band that is sensitive to the human ear, and is extremely audible. Conventionally, various attempts have been made to reduce this turbulent noise. The plate ζ that partitions the blades in the longitudinal direction has the strength necessary for the rigidity of the impeller, and at the same time is effective in rectifying the suction flow and outlet flow.
This is an example of how reducing turbulence also contributes to reducing surging and noise. Another conventional example shown in Fig. 7 is an air conditioning unit equipped with at least one guide vane that forcibly deflects and expands the air flow in the air flow path from the heat exchanger to the impeller. This is also an example of reducing noise by rectifying the turbulent flow downstream of the heat exchanger and allowing air to flow smoothly into the impeller.
発明が解決しようとする課題
しかし 前者の従来例で（よ 羽根車の静圧回復に（よ
寄与する力（通番ヘ 風量が降ちる欠点を有してい
た 又 流速が遅い時（よ 効果もある力丈速くなって
くると、仕切板からの流れのばくりか生欧 その際に音
を発生するといった不安も残されていた 後者の従来例
で（よ ガイドベーンの取り付けの困難さや、冷房時＆
Ｑ ベーンに水滴がつき、ファンに水滴がおちて、吹
き出される可能性もある。また ファンにベーンが近づ
いて、設置されると羽根車との干渉音も発生する恐れが
ある。Problems to be Solved by the Invention However, in the former conventional example, the force contributing to the static pressure recovery of the impeller (to the serial number) had the drawback of reducing the air volume. As the force became faster, there remained concerns that the air flow from the partition plate would cause noise, which could be caused by the flow of water from the partition plate. &
Q: There is a possibility that water droplets may get on the vanes, fall on the fan, and be blown out. Additionally, if the vanes are installed close to the fan, there is a risk of interference noise with the impeller.
本発明ζよ 上記従来の欠点を除去するもので、乱流騒
音を低減し かつ風量特性を向上させることを目的とす
るものである。The present invention ζ is intended to eliminate the above-mentioned conventional drawbacks, and aims to reduce turbulence noise and improve airflow characteristics.
課題を解決するための手段
この目的を達成するため艮 本発明ζよ 羽根車の翼と
翼を長手方向につないでいる仕切板 あるいは端板の外
周の厚み方向に丸みを設けたものである。Means for Solving the Problem In order to achieve this object, the present invention ζ is provided with roundness in the thickness direction of the outer periphery of the partition plate or end plate that connects the blades of the impeller in the longitudinal direction.
作用
かかる構成により、空気が羽根車に流入、流出する際に
生じゑ ばくり東 渦発生を抑え 騒音の低減をはかる
ことができるのである。With this configuration, it is possible to suppress the generation of vortices that occur when air flows into and out of the impeller, and to reduce noise.
実施例
以下、本発明をその一実施例について第１図を参考に説
明する。ここで従来技術との差を明確にするために、
一部第６図を使用して説明する。第６図において、従
来（よ 羽根車ｊＱ 空気が流入される際Ｅ 端板
あるいは仕切板の外周近傍の両側面がエツジであるた
めへ そこか収 空気の流れのはくりや乱れが生し そ
の状態で、羽根車に流入され 騒音を発生してい九 ま
た流出される際耘 仕切板に沿って流れでる空気（よ
外周のエツジ付近より、渦となって、流出し その際に
も音が発生してい九 そこで第１図に示すように端板あ
るい（よ 仕切板の外周の厚み方向に丸みあるいはＲを
もたせることにより、羽根車流入の際の流れのばくりゃ
乱れを抑え スムースに翼列を通過し 羽根車の内部の
流れ（上 端板あるいは仕切板に沿って流れ 流出の際
Ｌ 渦を最小限に抑えることができる。第３図に（よ
従来例と本実施例との風量−回転数特性の比較グラフを
示す。この図から耘 流れの乱れを少なくすることによ
り、風量特性が著しく向上していることがわかる。また
第４図の周波数比較特性図においてＬ 人間の耳に敏
感な高い周波数成分の低騒音化ができたことを示してい
る。また 他の実施例として、第２図に示すよう置 端
板あるいζよ 仕切′板を外周より中心へ厚みをも板
かつ表裏面をなめらかな形状にすることにより、前記と
同様な効果が得られる。EXAMPLE Hereinafter, the present invention will be described with reference to FIG. 1 by way of an example thereof. In order to clarify the difference with the conventional technology,
This will be partially explained using FIG. In Fig. 6, when air is introduced into the impeller (jQ), there are edges on both sides near the outer periphery of the end plate or partition plate. When the air flows into the impeller and generates noise, the air flows out along the partition plate.
From near the edge of the outer periphery, it flows out in the form of a vortex, which also generates sound. This reduces the turbulence of the flow when it enters the impeller, allows it to pass through the blade rows smoothly, and minimizes the flow inside the impeller (flowing along the upper end plate or partition plate) and vortices when exiting the impeller. As shown in Figure 3 (
A comparison graph of air volume-rotation speed characteristics between the conventional example and the present example is shown. This figure shows that by reducing the turbulence of the flow, the airflow characteristics are significantly improved. In addition, in the frequency comparison characteristic diagram of FIG. 4, L shows that the high frequency components to which the human ear is sensitive can be reduced in noise. In addition, as another embodiment, the thickness of the partition plate can be increased from the outer periphery to the center by placing the end plate or ζ as shown in Figure 2.
Moreover, by making the front and back surfaces smooth, the same effect as described above can be obtained.
発明の効果
以上のように本発明は 端板あるいは仕切板の外周の厚
み方向に丸みを設けることにより、流れのばくりも 乱
れを抑制し 従来から横断流送風機の重大な欠点とされ
てきた乱流騒音を非常に容易な方法で大巾に低減するば
かり力＼ 風量特性を大巾に改善し−恩 送風機の効
率等の性能向上に多いに寄与するものである。Effects of the Invention As described above, the present invention suppresses turbulence in the flow by rounding the outer periphery of the end plate or partition plate in the thickness direction. It not only greatly reduces the flow noise in a very easy way, but also greatly improves the air flow characteristics, which greatly contributes to improving the efficiency and performance of the blower.
第１図４１ 本発明の一実施例を示す羽根車の部分正
面匝 第２図（よ 本発明の他の実施例を示す羽根車の
部分正面図 第３図（よ 風量−回転数比較特性艮 第
４図は周波数比較特性医 第５図（表横断流送風機の概
略を示す斜視は 第６図（主 従来例を示す羽根車の部
分正面諷 第７図（戴 他の従来例を示す空調用ユニッ
トにおける空気の流れ状態説明図である。
１・・・・羽根風 ２・・・・翼 ３・・・・仕切板あ
るいは端板 ４・・・・空気の流れFig. 1 41 A partial front view of an impeller showing one embodiment of the present invention Fig. 2 A partial front view of an impeller showing another embodiment of the present invention Fig. 3 Comparative characteristics of air volume and rotation speed Figure 4 is a frequency comparison characteristic chart. Figure 5 is a schematic perspective view of a cross-flow blower. It is an explanatory diagram of the air flow state in the unit. 1...Blade wind 2...Blade 3...Partition plate or end plate 4...Air flow
Claims (2)
切板と、この端板あるいは仕切板間に、前記端板あるい
は仕切板の外形に沿って架設された複数の翼によって羽
根車を構成し、前記端板あるいは仕切板の外周の厚み方
向に丸みを設けたことを特徴とする横断流送風機。(1) An impeller is constructed by circular end plates or partition plates arranged at predetermined intervals and a plurality of blades installed between the end plates or partition plates along the outer shape of the end plates or partition plates. 1. A cross-flow blower characterized in that the end plate or the partition plate is rounded in the thickness direction of the outer periphery thereof.
いくほど厚みが増し、かつ前記端板あるいは仕切板の表
裏面がなめらかな形状をもった請求項１記載の横断流送
風機。(2) The cross-flow blower according to claim 1, wherein the end plate or the partition plate has a thickness that increases from the outer periphery toward the center, and the front and back surfaces of the end plate or the partition plate have a smooth shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2537890A JPH03229991A (en) | 1990-02-05 | 1990-02-05 | Cross-flow air blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2537890A JPH03229991A (en) | 1990-02-05 | 1990-02-05 | Cross-flow air blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03229991A true JPH03229991A (en) | 1991-10-11 |
Family
ID=12164193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2537890A Pending JPH03229991A (en) | 1990-02-05 | 1990-02-05 | Cross-flow air blower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03229991A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0538387U (en) * | 1991-10-24 | 1993-05-25 | ダイキン工業株式会社 | Cross flow Juan |
| WO2014038467A1 (en) * | 2012-09-04 | 2014-03-13 | ダイキン工業株式会社 | Cross-flow fan |
| WO2014038465A1 (en) * | 2012-09-04 | 2014-03-13 | ダイキン工業株式会社 | Cross-flow fan |
| WO2014038464A1 (en) * | 2012-09-04 | 2014-03-13 | ダイキン工業株式会社 | Cross-flow fan |
| JP2014066256A (en) * | 2014-01-24 | 2014-04-17 | Daikin Ind Ltd | Cross-flow fan |
| JP2014070536A (en) * | 2012-09-28 | 2014-04-21 | Daikin Ind Ltd | Cross flow fan |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56136192A (en) * | 1980-03-28 | 1981-10-24 | Toshiba Corp | Controlling device of motor |
| JPS6217396A (en) * | 1985-07-16 | 1987-01-26 | Matsushita Seiko Co Ltd | Cross flow fan |
-
1990
- 1990-02-05 JP JP2537890A patent/JPH03229991A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56136192A (en) * | 1980-03-28 | 1981-10-24 | Toshiba Corp | Controlling device of motor |
| JPS6217396A (en) * | 1985-07-16 | 1987-01-26 | Matsushita Seiko Co Ltd | Cross flow fan |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0538387U (en) * | 1991-10-24 | 1993-05-25 | ダイキン工業株式会社 | Cross flow Juan |
| EP2894345A4 (en) * | 2012-09-04 | 2015-08-12 | Daikin Ind Ltd | Cross-flow fan |
| WO2014038465A1 (en) * | 2012-09-04 | 2014-03-13 | ダイキン工業株式会社 | Cross-flow fan |
| WO2014038464A1 (en) * | 2012-09-04 | 2014-03-13 | ダイキン工業株式会社 | Cross-flow fan |
| JP2014047773A (en) * | 2012-09-04 | 2014-03-17 | Daikin Ind Ltd | Cross flow fan |
| JP2014047772A (en) * | 2012-09-04 | 2014-03-17 | Daikin Ind Ltd | Cross flow fan |
| CN104619992A (en) * | 2012-09-04 | 2015-05-13 | 大金工业株式会社 | Cross-flow fan |
| WO2014038467A1 (en) * | 2012-09-04 | 2014-03-13 | ダイキン工業株式会社 | Cross-flow fan |
| EP2889489A4 (en) * | 2012-09-04 | 2015-08-19 | Daikin Ind Ltd | Cross-flow fan |
| AU2013313559B2 (en) * | 2012-09-04 | 2016-01-28 | Daikin Industries, Ltd. | Cross-flow fan |
| CN105370586A (en) * | 2012-09-04 | 2016-03-02 | 大金工业株式会社 | Cross-flow fan |
| US9447790B2 (en) | 2012-09-04 | 2016-09-20 | Daikin Industries, Ltd. | Cross-flow fan |
| JP2014070536A (en) * | 2012-09-28 | 2014-04-21 | Daikin Ind Ltd | Cross flow fan |
| JP2014066256A (en) * | 2014-01-24 | 2014-04-17 | Daikin Ind Ltd | Cross-flow fan |
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