JPS5928097A - Fan - Google Patents
FanInfo
- Publication number
- JPS5928097A JPS5928097A JP57137626A JP13762682A JPS5928097A JP S5928097 A JPS5928097 A JP S5928097A JP 57137626 A JP57137626 A JP 57137626A JP 13762682 A JP13762682 A JP 13762682A JP S5928097 A JPS5928097 A JP S5928097A
- Authority
- JP
- Japan
- Prior art keywords
- impeller
- hub portion
- recesses
- noise
- blower
- 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
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/665—Sound attenuation by means of resonance chambers or interference
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- 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
本発明は、インペラを改良した音の静かな送風機に関す
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a quiet blower with an improved impeller.
従来例の構成とその問題点
従来の送風機の構成には第１図および第２図に示すよう
なものがあった。Conventional configurations and their problems Conventional blower configurations include those shown in FIGS. 1 and 2.
すなわち、１はインペラ、２はインペラ１に複数枚取り
つけられたブレード、３は／・プ部、４はハブ部３の１
表面で、気流が流れる面である。５は上ケーシング、６
は下ケーシング、７はディフーーザ部、８は気流の吸込
口、９はインペラ駆動軸でモータの出力軸に接続されて
いる。１０はインペラ駆動軸９にインペラ１を固定する
ナンドである。In other words, 1 is an impeller, 2 is a plurality of blades attached to the impeller 1, 3 is a /.pu part, and 4 is 1 of the hub part 3.
A surface through which air flows. 5 is the upper casing, 6
7 is a lower casing, 7 is a diffuser section, 8 is an air intake port, and 9 is an impeller drive shaft connected to the output shaft of the motor. 10 is a NAND for fixing the impeller 1 to the impeller drive shaft 9.
インペラ１が回転すると気流を生じ、ブレード２が風を
きったり、あるいは風の流れがブレード２やハブ部３の
表面４を通過したりする時に騒音を発生し、これがその
ま＼送風機騒音として外部に伝わっていた。この騒音を
防止する対策として従来は、送風機全体を防音材によっ
て囲む方策が主にとられていたが、それには材料費がか
＼るとともに構成も複雑となって好ましくなかった０発
明の目的
本発明は、騒音レベルの低い送風機を提供することによ
り上記従来の問題点を解消したものである０
発明の構成
本発明は、ノ・プ部の表面に入部を設けたインペラを用
いることにより、入部との共鳴作用で消音効果を発生さ
せて低騒音としたものである。When the impeller 1 rotates, it generates an airflow, and when the blades 2 cut the wind or the airflow passes through the blades 2 and the surface 4 of the hub part 3, noise is generated, which is directly transmitted to the outside as blower noise. It was reported that Conventionally, the main measure to prevent this noise has been to surround the entire blower with soundproofing material, but this increases the cost of materials and complicates the structure, which is not desirable. The present invention solves the above-mentioned conventional problems by providing a blower with a low noise level.Structure of the InventionThe present invention uses an impeller with an inlet on the surface of the nozzle. This creates a silencing effect due to the resonance effect with the material, resulting in low noise.
実施例の説明
本発明の実施例を第３図、第４図、第５図および第６図
により説明する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 3, 4, 5, and 6.
図面において、１１１′ｉインペラのブレード、１２は
インペラのハブ部、１３はハブ部１２の表面でアル。ハ
ブ部１２はアルミニウムの鋳造で形成するときは第３図
に示すように内部もつまった状態になり、樹脂の成型に
より形成するときは冷却速度の差によるひずみを防止す
るため、肉厚を均一にして、第６図、第６図に示すよう
に内部に空洞１６を設けた状態となる。１４はハブ部１
２０表面にはｙ直角方向に設けた適当な深さの複数個の
凹部、１６は空洞１５を有するハブ部１２の場合、その
表面に形成した複数個の透孔、１７は空洞１５内に充填
した吸音材１８は後面シュラウド部である。In the drawing, 111'i is the blade of the impeller, 12 is the hub part of the impeller, and 13 is the surface of the hub part 12. When the hub part 12 is formed by aluminum casting, the inside is also packed, as shown in Figure 3, and when it is formed by resin molding, the wall thickness is uniform to prevent distortion due to differences in cooling rate. Then, as shown in FIGS. 6 and 6, a cavity 16 is provided inside. 14 is the hub part 1
20 a plurality of recesses of appropriate depth provided in the y-perpendicular direction on the surface; 16 a plurality of through holes formed in the surface of the hub section 12 having a cavity 15; 17 a hole filled in the cavity 15; The sound absorbing material 18 is the rear shroud part.
インペラが回転すると、ブレード１１の間を表面１３に
沿って流れる気流によって発生する騒音は、ハブ部１２
の表面１３に形成された凹部１４、透孔１６のような大
部が共鳴管の作用をして表面１３を通過中の気流にのっ
ている騒音のエネルギーを吸収して低騒音とする。As the impeller rotates, the noise generated by the airflow flowing between the blades 11 along the surface 13 is absorbed by the hub portion 12.
Most of the concave portions 14 and through holes 16 formed on the surface 13 act as resonance tubes to absorb noise energy carried by the airflow passing through the surface 13, thereby reducing noise.
また吸音材１７が存在すると共鳴管作用の土に吸音作用
も発生１〜でよシ低騒音となる。In addition, when the sound absorbing material 17 is present, the soil acting as a resonant pipe also has a sound absorbing effect, resulting in much lower noise.
発明の効果
本発明は、ハブ部の表面に欠部を形成したインペラを用
いて送風機を構成する仁とにより、騒音レベルが低い送
風機を得ることができる０Effects of the Invention The present invention makes it possible to obtain a blower with a low noise level by using an impeller with a notch formed on the surface of the hub portion.
第１図は従来の送風機の断面図、第２図は同送風機にお
けるインペラの一部を切欠した側面図、第３図は本発明
の一実施例に用いたインペラの一部を切欠した側面図、
第４図は同インペ２の要部斜視図、第５図および第６図
はそれぞれ他の実施例に用いたインペラの一部を切欠し
た側面図である０
１２・・・・・・ハブ部、１３・・・・・・表面、１４
・・・・・・凹部、１６・・・・・・透孔。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
第２図
第３図Fig. 1 is a sectional view of a conventional blower, Fig. 2 is a partially cut-away side view of an impeller in the same blower, and Fig. 3 is a partially cut-away side view of an impeller used in an embodiment of the present invention. ,
FIG. 4 is a perspective view of the main parts of the impeller 2, and FIGS. 5 and 6 are partially cutaway side views of impellers used in other embodiments. , 13... Surface, 14
...Recessed portion, 16...Through hole. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3
Claims (2)
いてなる送風機。(1) A blower using an impeller with an inlet formed on the surface of the hub part.
範囲第１項記載の送風機。(2) The blower according to claim 1, wherein the hub portion is filled with a sound absorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57137626A JPS5928097A (en) | 1982-08-06 | 1982-08-06 | Fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57137626A JPS5928097A (en) | 1982-08-06 | 1982-08-06 | Fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5928097A true JPS5928097A (en) | 1984-02-14 |
Family
ID=15203051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57137626A Pending JPS5928097A (en) | 1982-08-06 | 1982-08-06 | Fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5928097A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6247247A (en) * | 1985-08-23 | 1987-02-28 | Nec Corp | Detecting system for folding of transmission line |
| JP2008169826A (en) * | 2006-12-14 | 2008-07-24 | Matsushita Electric Ind Co Ltd | Centrifugal impeller and centrifugal blower |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5742198B2 (en) * | 1979-02-22 | 1982-09-07 |
-
1982
- 1982-08-06 JP JP57137626A patent/JPS5928097A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5742198B2 (en) * | 1979-02-22 | 1982-09-07 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6247247A (en) * | 1985-08-23 | 1987-02-28 | Nec Corp | Detecting system for folding of transmission line |
| JP2008169826A (en) * | 2006-12-14 | 2008-07-24 | Matsushita Electric Ind Co Ltd | Centrifugal impeller and centrifugal blower |
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