JPS5866000A - Slant flow fan - Google Patents
Slant flow fanInfo
- Publication number
- JPS5866000A JPS5866000A JP16233581A JP16233581A JPS5866000A JP S5866000 A JPS5866000 A JP S5866000A JP 16233581 A JP16233581 A JP 16233581A JP 16233581 A JP16233581 A JP 16233581A JP S5866000 A JPS5866000 A JP S5866000A
- Authority
- JP
- Japan
- Prior art keywords
- fan
- back side
- tapered
- boss
- boss part
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
Abstract
Description
【発明の詳細な説明】
この発明はファンとりわけ斜流型ファンに関する０
ファン、特に内燃機関の冷却ファントシて、ψ１工、′
ば第１．２図に示すように ファンブレード１が取り付
けられるファンボス部２の外周面を、流れ方向に沿って
順次大径となるようにテーバ状に形成した斜流型冷却フ
ァンが公知であり、風切り音の低減ならびに風量の増大
に効果のあることが知られて藝る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fan, particularly a mixed flow type fan, and a cooling fan for an internal combustion engine.
For example, as shown in Fig. 1.2, a mixed flow type cooling fan is known in which the outer peripheral surface of a fan boss portion 2 to which a fan blade 1 is attached is formed into a tapered shape so that the diameter becomes larger in the flow direction. It is known to be effective in reducing wind noise and increasing air volume.
ところが、この冷却ファンケ例えば合成樹脂の射出成形
等により一体に型成形しようとする」烏合、上記のよう
にファンボス部２をテーバ状にすると、ファンブレード
１４部の背面側がアンダーカットとなるｔめ、２分割の
型では成形が不可能であり、谷ファンブレード１毎に放
射状に型抜きが行えるような多数のスライドコアが必要
となる。従って型が極めて高価となり、実作工数も増大
する欠点力５ある。However, if this cooling fan is attempted to be integrally molded by, for example, injection molding of synthetic resin, and if the fan boss part 2 is made into a tapered shape as described above, the back side of the fan blade 14 part will be undercut. , molding is impossible with a two-part mold, and a large number of slide cores are required so that each valley fan blade 1 can be radially cut out. Therefore, the mold becomes extremely expensive and the actual number of man-hours required increases.
また、このような欠点に対処するために、既に特開昭５
５−１３７８９５号によって、テーバ状のファンボス部
２の一部を別体に構成して２分νｒｌ１式の型成形を可
能とした斜流型冷却゛ファンが提案されている。これは
、アンダーカットとなるファンブレード１背面側では、
ファンボス部２をテ〜／（状に拡開させずに円筒状とし
、これにより生じる欠損部を、ねじ市め等により固定さ
れる別成形したセグメントにより埋める、【うにして、
第１．２図のもぴ〕と同様なテーバ状のファンボス部２
を得るのでちる。In addition, in order to deal with such shortcomings, we have already developed
No. 5-137895 proposes a mixed flow type cooling fan in which a part of the tapered fan boss portion 2 is formed separately to enable molding in a two-minute vrl1 type. This is due to the undercut on the back side of fan blade 1.
The fan boss part 2 is made into a cylindrical shape without being expanded into a Te~/( shape, and the resulting defect is filled with a separately molded segment that is fixed by screwing or the like.
Taper-shaped fan boss part 2 similar to the model shown in Fig. 1.2
I'll get it so I'll get it.
（７かしながら、このように別体のセグメントを用（ハ
ることは、部品点数が増すばかりか、１％床同転する冷
却ファンとしては、そのバランスや強度の点で好ましく
ない。ま友セグメントを用いずに間によって空気の流れ
が大きく乱され、却って風切り音が増大する惧れもある
・
この発明は上記のような点に入みてなされたもので、フ
ァングレード基部の背面側を除くファンボス部外周面を
テーバ状に形成するとともに、上記ファンブレード楠部
の背面側に、上記テーパ状ファンボス部の最大径に等し
い円筒面を有する膨出ｇＩＳ分設けた構成によって、２
分割の型による一体成形が可能で、しかも風量や風切り
音の面で劣ることのない斜流型ファンを得ることを目的
とする。(7) However, using separate segments in this way not only increases the number of parts, but also is undesirable in terms of balance and strength for a cooling fan that rotates at the same time as the 1% floor. Without using a fan segment, the air flow is greatly disturbed by the gap, which may even increase wind noise.This invention was made in consideration of the above points, and the back side of the base of the fan grade is By forming the outer circumferential surface of the fan boss part excluding the fan boss part into a tapered shape, and by providing a bulge gIS on the back side of the fan blade camphor part having a cylindrical surface equal to the maximum diameter of the tapered fan boss part,
To obtain a mixed flow type fan which can be integrally molded using a split mold and is not inferior in terms of air volume or wind noise.
以Ｆ、この発明の一実施例全図面に基づいて説明する。Hereinafter, one embodiment of the present invention will be described based on all the drawings.
第５図はこの発明に係る内燃機関の斜流型冷却ファンを
示し、この冷却ファンは、例えｌば合成樹脂の射出成形
等によりファンブレード１１トフ−ｆ ｙボス部１２と
が一体に型成形されているものであって、上記〕了ンボ
ス部１２の外周面は、ファンフレード１１基部Ｉ７）背
面側を除く範囲１２ ａにおいて、流れ方向に１斬次大
径となるテーバ状に形成されており、他方、ファンブレ
ード１１基部の背面側には、第４図に示す如く、Ｌ記テ
ーパ状ファンボス部１２の最大径に等１−い円筒面１３
ａを有する膨出部１３が形成されている。すなわち、
上記Ｉ１１出部１３け、ファンの軸線と平行な円筒面１
３ ａと、同じく平行な１［川面１３ ｂとを有してお
り、ま友軽縫化督よび冷却時の歪防ＩＬの友めに、その
背面側から肉抜きされて、内部が中空部１４となってい
る・
従って１．上記構成によれば、Ｅ記膨出部１３１ｃよっ
てファンブレード１１背面にアンダーカット金主じるこ
とがなく、ファンの軸線に沿って型開きされる２分割形
式の型でもって成形がＯＴ能である・チた、上記のよう
に膨出部１３分形成したこと［＃うｇｌ歌の損失は極め
て僅かであり、また風切り音の増大も少なく、第１．２
図に示ｉ−た通常の斜流型ファンとほぼ同レベルの静粛
性全維持することができる。FIG. 5 shows a mixed-flow type cooling fan for an internal combustion engine according to the present invention, in which fan blades 11 and boss portions 12 are integrally molded, for example, by injection molding of synthetic resin. The outer circumferential surface of the above-mentioned embossed part 12 is formed into a tapered shape that becomes one step larger in diameter in the flow direction in the area 12a excluding the base part I7) of the fan flap 11 and the back side. On the other hand, on the back side of the base of the fan blade 11, as shown in FIG.
A bulging portion 13 having a shape is formed. That is,
Above I11 exit part 13, cylindrical surface 1 parallel to the axis of the fan
3a and 1[river surface 13b, which are also parallel to each other, and the back side is cut out and the inside is hollow in order to provide light seam control and distortion prevention IL during cooling. 14. Therefore, 1. According to the above configuration, there is no undercut metal on the back surface of the fan blade 11 due to the E-marked bulge 131c, and the molding can be performed OT using a two-part mold that opens along the axis of the fan. Yes, the 13-minute bulge was formed as described above, and the loss of song was extremely small, and the increase in wind noise was also small.
It is possible to maintain almost the same level of quietness as the normal mixed flow type fan shown in the figure.
以ヒの説明で明らかなように、この発明によれば、風ｆ
訃よび静粛性に優れた斜流型ファンを、特に複雑な成形
型を用いずに製作することかり能となり、その低コスト
化を図れるものである。As is clear from the following explanation, according to this invention, the wind f
It is possible to manufacture a mixed flow type fan that is excellent in noise and quietness without using a particularly complicated mold, and it is possible to reduce the cost.
第１図は従来における斜流型ファンの正面図、第２１シ
ｌｖ′ｆ：、そのｎ−ｎ線に沿ったｒｖＩ面図、第６図
ばこの発明に係る斜流型ファンの１ｆｆｒ面図、＠４図
はその要部の斜滉図である。
１１・・・フｆンブレード、１２・・・ファンボス部、
１３・・・膨出部。
第２図
第３図Fig. 1 is a front view of a conventional mixed flow type fan, 21st sylv'f:, rvI side view taken along line nn, and Fig. 6 is a 1ffr side view of a mixed flow type fan according to the present invention. , @Figure 4 is a perspective view of the main part. 11...Fun blade, 12...Fan boss part,
13...bulge. Figure 2 Figure 3
Claims (1)
形される斜流型ファンにおいて、ファンブレード基部の
背面側を除くファンボス部外周面をテーバ状に形成する
とともに、上記ファンブレード基部の背面側に、上記テ
ーバ状ファンボス部の最大径に等しい円筒面を有する膨
出部を設けたことを特徴とする斜流型ファン。(1) In a mixed flow fan in which a fan blade and a fan boss are integrally molded, the outer peripheral surface of the fan boss except for the back side of the fan blade base is formed into a tapered shape, and the back side of the fan blade base is A mixed flow type fan characterized in that a bulging portion having a cylindrical surface equal to the maximum diameter of the tapered fan boss portion is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16233581A JPS5866000A (en) | 1981-10-12 | 1981-10-12 | Slant flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16233581A JPS5866000A (en) | 1981-10-12 | 1981-10-12 | Slant flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5866000A true JPS5866000A (en) | 1983-04-19 |
Family
ID=15752587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16233581A Pending JPS5866000A (en) | 1981-10-12 | 1981-10-12 | Slant flow fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5866000A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6073000U (en) * | 1983-10-25 | 1985-05-22 | ダイキン工業株式会社 | propeller fan |
| WO2001079704A2 (en) * | 2000-04-14 | 2001-10-25 | Borg Warner Inc. | Cooling fan |
| WO2002063172A1 (en) * | 2001-02-07 | 2002-08-15 | Denso Corporation | Axial fan for vehicle |
-
1981
- 1981-10-12 JP JP16233581A patent/JPS5866000A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6073000U (en) * | 1983-10-25 | 1985-05-22 | ダイキン工業株式会社 | propeller fan |
| JPH0121198Y2 (en) * | 1983-10-25 | 1989-06-23 | ||
| WO2001079704A2 (en) * | 2000-04-14 | 2001-10-25 | Borg Warner Inc. | Cooling fan |
| WO2001079704A3 (en) * | 2000-04-14 | 2002-04-04 | Borgwarner Inc | Cooling fan |
| US6375427B1 (en) | 2000-04-14 | 2002-04-23 | Borgwarner Inc. | Engine cooling fan having supporting vanes |
| EP1793125A1 (en) * | 2000-04-14 | 2007-06-06 | Borgwarner, Inc. | Cooling fan |
| EP1795761A1 (en) * | 2000-04-14 | 2007-06-13 | Borgwarner, Inc. | Cooling fan |
| WO2002063172A1 (en) * | 2001-02-07 | 2002-08-15 | Denso Corporation | Axial fan for vehicle |
| US6659724B2 (en) | 2001-02-07 | 2003-12-09 | Denso Corporation | Axial fan for vehicles |
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