JPS6045797A - Centrifugal fan - Google Patents
Centrifugal fanInfo
- Publication number
- JPS6045797A JPS6045797A JP15350883A JP15350883A JPS6045797A JP S6045797 A JPS6045797 A JP S6045797A JP 15350883 A JP15350883 A JP 15350883A JP 15350883 A JP15350883 A JP 15350883A JP S6045797 A JPS6045797 A JP S6045797A
- Authority
- JP
- Japan
- Prior art keywords
- fan
- side plates
- centrifugal fan
- centrifugal
- fan blade
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L5/00—Structural features of suction cleaners
- A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
- A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Electric Vacuum Cleaner (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は電気掃除機、送風機などに用いられる遠心ファ
ンに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a centrifugal fan used in vacuum cleaners, blowers, etc.
従来例の構成とその問題点
一般に電気掃除機においては第１図に示すように本体１
内に遠心ファン２を設け、前記遠心ファン２の作動によ
シ真空吸塵するようになっている。Conventional structure and problems Generally, in a vacuum cleaner, the main body 1 is as shown in Fig. 1.
A centrifugal fan 2 is provided inside, and dust is vacuumed by the operation of the centrifugal fan 2.
なお、図中の３は駆動用のモータ、４は吸込口、６は集
塵部である。In addition, 3 in the figure is a driving motor, 4 is a suction port, and 6 is a dust collection part.
前記遠心ファン２は第２図に示すようにファン側板６，
７と、前記ファン側板６，７間に設けられたファンブレ
ード８よシなシ、ファン側板６の中央部には吸引口９が
形成されている。そしてファンブレード８は第３図に示
すように端部８ａとファン外周１ｏの接線とが角度αを
もつように組み合わされている。As shown in FIG. 2, the centrifugal fan 2 has fan side plates 6,
7 and a fan blade 8 provided between the fan side plates 6 and 7. A suction port 9 is formed in the center of the fan side plate 6. As shown in FIG. 3, the fan blades 8 are assembled such that the end portion 8a and the tangent to the fan outer periphery 1o form an angle α.
ところで前記遠心ファン２を運転したとき、前記ファン
ブレード８がファン外周１０の接線に対しαの角度をも
つため、ファンブレード８の後方において風の流れに渦
１１が生じ、このために騒音が発生し、さらに遠心ファ
ンの仕事率低下の原因となっていた。By the way, when the centrifugal fan 2 is operated, since the fan blades 8 have an angle α with respect to the tangent to the fan outer periphery 10, a vortex 11 is generated in the wind flow behind the fan blades 8, which generates noise. Furthermore, this caused a decrease in the work rate of the centrifugal fan.
発明の目的
本発明は前記従来の問題に留意し、騒音が小さく、かつ
、仕事率の高い遠心ファンを提供することを目的とする
ものである。OBJECTS OF THE INVENTION The present invention takes into account the above-mentioned conventional problems and aims to provide a centrifugal fan with low noise and high power.
発明の構成
前記目的を達成するだめ、本発明は２枚のファン側板と
、このファン側板間に設けられたファングレードよシな
る遠心ファンにおいて、前記ファンブレードの外端部を
反回転方向で、かつ、ファン外周に沿うように折曲した
構成としたものであリ、ファン運転時にファングレード
の後方に空気温が生じなく、したがって騒音が低減し、
仕事率も向上するものである。Structure of the Invention In order to achieve the above object, the present invention provides a centrifugal fan having two fan side plates and a different fan grade provided between the fan side plates, with the outer ends of the fan blades being rotated in a counter-rotational direction. In addition, since the fan is bent along the outer circumference of the fan, air temperature does not occur behind the fan grade when the fan is in operation, thus reducing noise.
Work rate also improves.
実施例の説明 以下本発明の一実施例を第４図にもとづき説明する。Description of examples An embodiment of the present invention will be described below based on FIG.
図において１１は本体、１２は遠心ファンである。前記
遠心ファン１２は２つのファン側板１３（一方のファン
側板は図示せず）と、このファン側板１３間にある曲率
をもつ放射状に設けられたファングレード１４よシなシ
、前記ファンブレード１４の外端部１５を反回転方向で
、かつファン外周１６の接線に沿うように折曲している
。In the figure, 11 is the main body, and 12 is a centrifugal fan. The centrifugal fan 12 has two fan side plates 13 (one of the fan side plates is not shown), a fan grade 14 provided radially between the fan side plates 13 and a certain curvature, and the fan blades 14. The outer end portion 15 is bent in the counter-rotational direction and along a tangent to the outer circumference 16 of the fan.
上記構成の遠心ファンはその運転時において空気の流れ
は図示矢印１７で示すようにファンブレード１４および
ファン外周１６に沿って流れる。When the centrifugal fan configured as described above is in operation, air flows along the fan blades 14 and the fan outer periphery 16 as indicated by arrows 17 in the figure.
このため、ファンブレード１４の後方で渦が形成される
ことがなく、騒音が低減する。また、吸い込捷れた空気
がファン内に沈滞することもないため、仕事率が向上す
る。Therefore, no vortex is formed behind the fan blades 14, and noise is reduced. In addition, since the sucked air does not stagnate inside the fan, the power efficiency is improved.
発明の効果
前記実施例の説明よシ明らかなように本発明（よる遠心
ファンはファンブレードの外端部を反回転方向で、かつ
、ファン外周の接線に沿うように折曲したことによシ、
騒音低減と、仕事率の向上がはかられ、しかも、ファン
ブレードの外端部を折曲するという簡単な構成であシ、
その価値の大きいものである。Effects of the Invention As is clear from the description of the embodiments described above, the centrifugal fan according to the present invention is characterized by the fact that the outer end of the fan blade is bent in the counter-rotation direction and along a tangent to the outer periphery of the fan. ,
It reduces noise and improves power efficiency, and has a simple configuration of bending the outer end of the fan blade.
It is of great value.
第１図は遠心ファンを備えた電気掃除機の断面図、第２
図はその遠心ファンの斜視図、第３図は第１図のＡ−Ａ
線断面図、第４図は本発明の一実施例の遠心ファンの断
面図である。
１２・・・・・・遠心ファン、１３・・・・・・ファン
側板、１４・・・・・・ファンブレード、１５・・・・
・・外端部、１６・・・・・・ファン外周。Figure 1 is a cross-sectional view of a vacuum cleaner equipped with a centrifugal fan;
The figure is a perspective view of the centrifugal fan, and Figure 3 is A-A in Figure 1.
4 is a cross-sectional view of a centrifugal fan according to an embodiment of the present invention. 12...Centrifugal fan, 13...Fan side plate, 14...Fan blade, 15...
...outer end, 16...outer circumference of the fan.
Claims (1)
部を、反回転方向で、かつ、ファン外周の接線に沿うよ
うに折曲してなる遠心ファン。A centrifugal fan in which the outer end of a fan blade provided between two fan side plates is bent in the counter-rotational direction and along a tangent to the outer circumference of the fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15350883A JPS6045797A (en) | 1983-08-22 | 1983-08-22 | Centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15350883A JPS6045797A (en) | 1983-08-22 | 1983-08-22 | Centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6045797A true JPS6045797A (en) | 1985-03-12 |
Family
ID=15564075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15350883A Pending JPS6045797A (en) | 1983-08-22 | 1983-08-22 | Centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6045797A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0267099U (en) * | 1988-11-08 | 1990-05-21 | ||
| EP1329185A2 (en) * | 2002-01-18 | 2003-07-23 | Lg Electronics Inc. | Centifugal blower for vacuum cleaner |
| CN104564808A (en) * | 2014-04-11 | 2015-04-29 | 林钧浩 | Down-flow pressurizing energy-saving fan |
-
1983
- 1983-08-22 JP JP15350883A patent/JPS6045797A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0267099U (en) * | 1988-11-08 | 1990-05-21 | ||
| EP1329185A2 (en) * | 2002-01-18 | 2003-07-23 | Lg Electronics Inc. | Centifugal blower for vacuum cleaner |
| EP1329185A3 (en) * | 2002-01-18 | 2003-08-20 | Lg Electronics Inc. | Centifugal blower for vacuum cleaner |
| CN104564808A (en) * | 2014-04-11 | 2015-04-29 | 林钧浩 | Down-flow pressurizing energy-saving fan |
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