JP2765219B2 - Blower fan - Google Patents
Blower fanInfo
- Publication number
- JP2765219B2 JP2765219B2 JP30040190A JP30040190A JP2765219B2 JP 2765219 B2 JP2765219 B2 JP 2765219B2 JP 30040190 A JP30040190 A JP 30040190A JP 30040190 A JP30040190 A JP 30040190A JP 2765219 B2 JP2765219 B2 JP 2765219B2
- Authority
- JP
- Japan
- Prior art keywords
- wing
- blade
- blower fan
- chord
- fan
- 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.)
- Expired - Lifetime
Links
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- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は，自動車のエンジンルーム内などに配置され
る送風用ファン，特にそのファン形状に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower fan arranged in an engine room of an automobile, and particularly to a fan shape thereof.
自動車のエンジンルーム内には，エンジン冷却水を冷
却するために熱交換器が配設されている。そして，該熱
交換器に冷却風を送るために送風用ファンが配設されて
いる。この送風用ファンは，従来，送風性能を向上させ
るために，前進翼や前傾翼が提案されている（例えば，
特開平１−130098号公報，特開昭62−265499号公報）。A heat exchanger is provided in an engine room of an automobile to cool engine cooling water. A blower fan is provided for sending cooling air to the heat exchanger. Conventionally, forward wings and forward inclined wings have been proposed for this blowing fan to improve the blowing performance (for example,
JP-A-1-130098, JP-A-62-265499).
上記前進翼とは，第８図に示すごとく，翼80の前方部
801をファンの回転方向前方側へ進めた形状の翼をい
う。また，前傾翼とは，第７図に示すごとく，翼80の先
端部805を回転軸81の前方H,即ち熱交換器30側へ傾けた
翼をいう。The forward wing, as shown in FIG.
801 is a wing shaped to advance the fan forward in the rotation direction of the fan. In addition, as shown in FIG. 7, the forward inclined wing refers to a wing in which the tip 805 of the wing 80 is inclined forward H of the rotating shaft 81, that is, toward the heat exchanger 30 side.
しかしながら，上記第７図に示すごとく，通常，翼80
を熱交換器30の方向へ前傾化させると，翼80の先端部80
5と熱交換器30との間のクリアランスＵが小さくなる。
そのため，このクリアランスを支障ない範囲に確保する
ためには，ファンのボス部85の後部と熱交換器30の前部
との間の配置長さL4を，通常の直線翼90の場合の配置長
さL3よりも，大きく取らなければならない。However, as shown in FIG.
Is tilted forward toward the heat exchanger 30, the tip 80
The clearance U between 5 and the heat exchanger 30 becomes smaller.
Therefore, in order to secure this clearance in a range that does not hinder the arrangement, the arrangement length L4 between the rear part of the fan boss part 85 and the front part of the heat exchanger 30 is set to the arrangement length in the case of the normal straight blade 90. It must be larger than L3.
それ故，エンジンルーム内においては，送風用ファン
を配置するためのファンスペースを拡大しなければなら
ない。このことは，エンジンルーム内における部品配置
スペースの縮小化の要望に反する。Therefore, in the engine room, the fan space for disposing the blower fan must be expanded. This is contrary to the demand for reducing the space for arranging parts in the engine room.
また，翼前進化により，第８図に示すごとく，翼80の
長さL2が，直線翼90の長さL1よりも長くなる。そのた
め，翼80及びボス部85に，直線翼90の場合に比して，大
きな強度が要求されることになる。それ故，これらの補
強のために，その肉厚を大きくしたり，強度の高い材質
を使用するなどの措置が必要となる。In addition, due to the advance of the blade, the length L2 of the blade 80 becomes longer than the length L1 of the straight blade 90 as shown in FIG. For this reason, the wing 80 and the boss portion 85 are required to have higher strength than the straight wing 90. Therefore, in order to reinforce these, it is necessary to take measures such as increasing the wall thickness or using a material having high strength.
その結果，送風用ファンは，全体の重量が大きくなっ
たり，またコスト高となる。As a result, the blower fan becomes heavier as a whole and more expensive.
本発明はかかる従来の問題点に鑑み，前進翼，前傾翼
における送風性能は確保しつつ，ファンスペースが小さ
く，かつ強度低下も生じない送風用ファンを提供しよう
とするものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and it is an object of the present invention to provide a blower fan in which the fan space is small and the strength is not reduced while ensuring the blowing performance of the forward wing and the forward inclined wing.
本発明は，翼とボス部が一体成形されたファンにおい
て，翼根元部の翼前縁と翼後縁とを結ぶ翼弦の中点であ
る翼弦中点より回転軸への垂線に対し，該垂線に直角な
面で切断した翼断面における翼弦の中心点を連続的に結
んだ翼弦中心線が，翼根元部から翼先端に向かって回転
軸の後方及び回転方向後方へ一旦後退した後，再び前記
垂線に対して，回転軸の前方及び回転方向前方へ転向す
る形状としたことを特徴とする送風用ファンにある。The present invention relates to a fan in which a wing and a boss are integrally formed, in a fan from a midpoint of a chord, which is a midpoint of a chord connecting a leading edge and a trailing edge of a wing root, to a rotation axis. A chord center line continuously connecting the chord center points in the wing cross-section cut at a plane perpendicular to the perpendicular line has receded backward from the root of the blade toward the tip of the blade to the rear of the rotation axis and to the rear in the rotation direction. After that, the blower fan is again turned forward with respect to the perpendicular to the rotation axis and forward in the rotation direction.
本発明において，上記送風用ファンは，通常は，翼及
びボス部が合成樹脂又は金属で，一体成形されている。In the present invention, in the blower fan, the wings and the boss are usually integrally formed of synthetic resin or metal.
本発明の送風用ファンは，送風性能への影響度が大き
い，翼有効径部付近より外周部分に着目し，主としてこ
の外周部分を前記のごとく，前進前傾翼化したものであ
る。The blower fan of the present invention focuses on the outer peripheral portion rather than the vicinity of the blade effective diameter portion, which has a large degree of influence on the blowing performance, and mainly forms the outer peripheral portion into a leaning blade before advancement as described above.
これにより，送風性能は，前記の前進翼，前傾翼と同
様に，十分な性能が確保されたまま，ファンスペースの
縮小化を図ることができるのである。そして，このよう
な形状としても，翼強度の低下は生ぜず，強度低下の防
止を図ることができる。As a result, the fan space can be reduced in fan space while sufficient performance is ensured as in the case of the forward wing and the forward inclined wing. And even with such a shape, a decrease in blade strength does not occur, and a decrease in strength can be prevented.
また，そのため，従来の前進翼，前傾翼の場合のよう
に，肉厚化，材質変更による強度向上化を図る必要がな
く，コストアップを防止することもできる。Therefore, unlike the case of the conventional forward wing and forward inclined wing, it is not necessary to increase the strength by increasing the wall thickness and changing the material, and it is also possible to prevent an increase in cost.
また，本発明の送風用ファンは，従来の直線翼に比し
て，広い周波数の範囲において騒音も少なく，送風性
能，騒音低減に一層優れた送風用ファンである（第４図
参照）。Further, the blower fan of the present invention has less noise in a wide frequency range than the conventional straight blade, and is more excellent in blower performance and noise reduction (see FIG. 4).
したがって，本発明によれば，ファンスペースが少な
く，かつ高強度，低騒音の送風性能に優れた送風用ファ
ンを提供することができる。Therefore, according to the present invention, it is possible to provide a blower fan that has a small fan space and is excellent in high-intensity, low-noise air blowing performance.
本発明の実施例にかかる送風用ファンにつき，第１図
〜第４図を用いて説明する。A blower fan according to an embodiment of the present invention will be described with reference to FIGS.
即ち，本例の送風用ファン１は，第１図，第２図に示
すごとく，翼10とボス部20とが一体成形されたもので，
垂線Ｓに対して翼弦中心線Ｔが翼根元部11から翼先端19
に向って，回転軸21の後方Ｋ（第２図）及び回転方向後
方Ｒ（第１図）へ一旦後退した後，再び垂線Ｓに対して
回転軸21の前方Ｈ（第２図）及び回転方向前方Ｆ（第１
図）へ転向する形状としたものである。That is, as shown in FIGS. 1 and 2, the blower fan 1 according to the present embodiment has the blade 10 and the boss portion 20 integrally formed.
The chord centerline T extends from the blade root 11 to the wing tip 19 with respect to the perpendicular S.
To the rear of the rotating shaft 21 (FIG. 2) and to the rear in the rotating direction R (FIG. 1), and then the front H (FIG. 2) and the rotation of the rotating shaft 21 with respect to the perpendicular S again. Direction F (first
(Fig.).
そして，上記翼弦中心線Ｔは，翼根元部11の翼前縁12
と翼後縁13とを結ぶ翼弦の中点である翼弦中点14より，
回転軸21に対して垂下させた直線である。また，上記翼
弦中心線Ｔは，第１図，第３図に示すごとく，上記垂線
Ｓに直角な面で切断した翼断面（第３図）における，翼
弦15の中心点19を連続的に結んだ線である。The chord center line T is defined by the leading edge 12 of the blade root 11.
From the midpoint of chord 14, which is the midpoint of the chord connecting the
This is a straight line that is hung down on the rotation shaft 21. As shown in FIGS. 1 and 3, the chord center line T is a continuous center point 19 of the chord 15 in a blade section (FIG. 3) cut along a plane perpendicular to the perpendicular S. This is the line connected to
それ故，上記翼弦中心線Ｔは，第１図に示すごとく，
翼10の前側の翼前縁12と後側の翼後縁13との中間位置に
ある。同図のM,M,及びN,Nは，各翼断面における，中心
点19から翼前縁12又は翼後縁13までの距離が同じである
ことを示している。Therefore, the chord center line T is, as shown in FIG.
The wing 10 is located at an intermediate position between the leading edge 12 on the front side and the trailing edge 13 on the rear side. In the figure, M, M, and N, N indicate that the distance from the center point 19 to the wing leading edge 12 or the wing trailing edge 13 in each wing section is the same.
また，本例の送風用ファン１の翼10は，第１図より知
られるごとく，先端部近くが前進翼である。また，第２
図に示すごとく，上記回転軸前方Ｈとは，熱交換器30に
面している側をいう。また，同図に示すごとく，回転軸
後方Ｋは送風用ファン１を回転させるためのプーリ25,
又は駆動モータ（図示略）の配設側をいう。As shown in FIG. 1, the blade 10 of the blower fan 1 of this embodiment has a forward blade near the tip. The second
As shown in the drawing, the front H of the rotation axis refers to the side facing the heat exchanger 30. As shown in the figure, the rotation shaft rear K is provided with pulleys 25 for rotating the blower fan 1,
Alternatively, it refers to a side on which a drive motor (not shown) is provided.
また，本例の送風用ファン１は，第２図に示すごと
く，ボス部20に対して翼10を一体成形したものであり，
ボス部20及び翼10は合成樹脂製又は鋳鉄製である。Further, the blower fan 1 of the present embodiment has a blade 10 integrally formed with a boss 20 as shown in FIG.
The boss 20 and the blade 10 are made of synthetic resin or cast iron.
また，第２図に示すごとく，本例の送風用ファンの翼
10は，該翼10が回転したときの翼前縁12の回転軌跡120
と，翼後縁13の回転軌跡130との幅がボス部20の幅とほ
ぼ同じである。また，特に，翼前縁の回転軌跡120が，
ボス部20の回転軸前方縁200よりも内方側にある。In addition, as shown in FIG.
10 is a rotation locus 120 of the wing leading edge 12 when the wing 10 rotates.
Of the wing trailing edge 13 and the rotation locus 130 are substantially the same as the width of the boss 20. In particular, the rotation trajectory 120 of the wing leading edge is
The boss 20 is located on the inner side than the front edge 200 of the rotation shaft.
このことは，翼10と熱交換器30との間のクリアランス
（前記第７図の符号Ｕ）を小さくしても，前記従来の前
傾翼のように熱交換器30とボス部20との間の配置長さ
（前記第７図のL4）を大きくする必要がないことを示し
ている。それ故，本例によれば，ファンスペースが小さ
くて済むことになる。This means that even if the clearance between the blades 10 and the heat exchanger 30 (reference numeral U in FIG. 7) is reduced, the heat exchanger 30 and the boss portion 20 can be separated from each other as in the case of the conventional forward tilting blade. This shows that it is not necessary to increase the interposition length (L4 in FIG. 7). Therefore, according to this example, the fan space can be small.
また，上記本例にかかる送風用ファン１を回転軸21に
対して取付け，回転させたところ，前記従来の前進翼，
前傾翼と同様に優れた送風性能を示した。Further, when the blower fan 1 according to the present embodiment was mounted on the rotating shaft 21 and rotated, the conventional forward wing,
Excellent air blowing performance was shown as well as the forward leaning wing.
上記のごとく，本例の送風用ファン１によれば，従来
の前進翼，前傾翼と同様に優れた送風性能を確保するこ
とができ，ファンスペースの縮小化を図ることができ
る。As described above, according to the blower fan 1 of the present embodiment, excellent blowing performance can be ensured as in the case of the conventional forward wing and forward tilting wing, and the fan space can be reduced.
また，主として，翼の外周部分を，前進翼，前傾翼と
しているので，翼強度の低下も防止できる。そのため，
従来の前進翼，前傾翼の場合のごとく，翼の肉厚化，材
質変更による強度向上化の必要がない。そのため，コス
トアップも防止できる。In addition, since the outer peripheral portion of the wing is mainly composed of a forward wing and a forward inclined wing, a decrease in blade strength can be prevented. for that reason,
Unlike the case of the conventional forward wing and forward tilting wing, it is not necessary to increase the thickness of the wing and improve the strength by changing the material. Therefore, cost increase can be prevented.
また，本例の送風用ファンについて，回転時の騒音レ
ベルにつき，測定した。その結果を，横軸に騒音の周波
数（Hz）を，縦軸に騒音レベル（dB（Ａ））をとって，
第４図に実線で示した。また，同図には，比較のため，
従来の直線翼の場合について，点線で示した。In addition, the noise level during rotation of the blower fan of this example was measured. The results are plotted with the noise frequency (Hz) on the horizontal axis and the noise level (dB (A)) on the vertical axis.
This is shown by a solid line in FIG. Also, in the figure, for comparison,
The dotted line shows the case of a conventional straight blade.
また，上記直線翼は，第５図及び第６図に示すごと
く，翼前縁92と翼後縁93とがほぼ直線状であり，翼90の
幅形状も翼垂線Ｓに対して左右対称である。また，両図
において,91は回転軸,95はボス部,Pは上記垂線Ｓに直角
な断面における翼弦中心線（垂線Ｔと同じ）から，翼前
縁92又は翼後縁93までの距離である。Further, in the straight blade, as shown in FIGS. 5 and 6, the leading edge 92 and trailing edge 93 are substantially straight, and the width of the blade 90 is symmetrical with respect to the vertical line S. is there. In both figures, 91 is the axis of rotation, 95 is the boss, and P is the distance from the chord center line (same as the perpendicular T) in a section perpendicular to the perpendicular S to the leading edge 92 or trailing edge 93 of the wing. It is.
上記第４図より知られるごとく，本発明の送風用ファ
ンは，広い周波数範囲において，従来の直線翼に比して
騒音レベルが低いことが分かる。As can be seen from FIG. 4, the blower fan of the present invention has a lower noise level in a wide frequency range than the conventional straight blade.
第１図〜第６図は実施例を示し，第１図は送風用ファン
の正面図，第２図は送風用ファンの直径方向の断面図，
第３図は翼垂線に直角方向の翼断面図，第４図は回転時
の送風用ファンの騒音レベル測定線図，第５図及び第６
図は従来の直線翼の平面図及び断面図，第７図及び第８
図は他の従来の前傾翼，前進翼の説明図である。 １……送風用ファン， 10……翼， 11……翼根元部， Ｓ……垂線， Ｔ……翼弦中心線，1 to 6 show an embodiment, FIG. 1 is a front view of a blower fan, FIG. 2 is a diametrical sectional view of the blower fan,
Fig. 3 is a cross-sectional view of the blade perpendicular to the vertical line of the blade, Fig. 4 is a noise level measurement diagram of the blower fan during rotation, Figs.
The figures are a plan view and a sectional view of a conventional straight blade, and FIGS.
The figure is an explanatory view of another conventional forward wing and forward wing. 1 ... Fan for blowing, 10 ... Blade, 11 ... Blade root, S ... Vertical line, T ... Chord center line,
Claims (1)
て，翼根元部の翼前縁と翼後縁とを結ぶ翼弦の中点であ
る翼弦中点より回転軸への垂線に対し，該垂線に直角な
面で切断した翼断面における翼弦の中心点を連続的に結
んだ翼弦中心線が，翼根元部から翼先端に向かって回転
軸の後方及び回転方向後方へ一旦後退した後，再び前記
垂線に対して，回転軸の前方及び回転方向前方へ転向す
る形状としたことを特徴とする送風用ファン。In a fan having a wing and a boss integrally formed, a midpoint of a chord, which is a midpoint of a chord connecting a leading edge and a trailing edge of a wing root portion, is perpendicular to a rotation axis. The chord center line continuously connecting the chord center points in the wing cross-section cut at a plane perpendicular to the perpendicular line retreats from the root of the blade toward the tip of the blade toward the rear of the rotation axis and backward in the rotation direction. And then turning again forward of the rotation axis and forward in the rotation direction with respect to the perpendicular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30040190A JP2765219B2 (en) | 1990-11-06 | 1990-11-06 | Blower fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30040190A JP2765219B2 (en) | 1990-11-06 | 1990-11-06 | Blower fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04175499A JPH04175499A (en) | 1992-06-23 |
| JP2765219B2 true JP2765219B2 (en) | 1998-06-11 |
Family
ID=17884349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30040190A Expired - Lifetime JP2765219B2 (en) | 1990-11-06 | 1990-11-06 | Blower fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2765219B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100484824B1 (en) * | 2002-11-19 | 2005-04-22 | 엘지전자 주식회사 | An axial flow fan |
| JP4619901B2 (en) * | 2005-08-29 | 2011-01-26 | アイシン化工株式会社 | cooling fan |
| JP2010053872A (en) * | 2009-12-10 | 2010-03-11 | Aisin Chem Co Ltd | Cooling fan |
-
1990
- 1990-11-06 JP JP30040190A patent/JP2765219B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04175499A (en) | 1992-06-23 |
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