JP3453093B2 - Axial blower - Google Patents
Axial blowerInfo
- Publication number
- JP3453093B2 JP3453093B2 JP36530199A JP36530199A JP3453093B2 JP 3453093 B2 JP3453093 B2 JP 3453093B2 JP 36530199 A JP36530199 A JP 36530199A JP 36530199 A JP36530199 A JP 36530199A JP 3453093 B2 JP3453093 B2 JP 3453093B2
- Authority
- JP
- Japan
- Prior art keywords
- blade
- blower
- axial
- fan
- 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.)
- Expired - Fee Related
Links
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- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば自動車のラ
ジエータ用冷却ファン、家庭用換気扇や扇風機のファン
等の軸流送風機に係り、特に送風騒音の低減と送風量の
増大とを共に図った軸流送風機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axial blower, such as a cooling fan for a radiator of an automobile, a domestic ventilation fan or a fan of a fan, and more particularly to a shaft for reducing the blowing noise and increasing the blowing amount. Regarding the blower.
【０００２】[0002]
【従来の技術】従来、この種の軸流送風機のうち、送風
騒音の低減を図ったものとしては特公昭６３−１３０４
０号公報に掲載されたものがある。この軸流送風機は、
ボス部に複数の翼を取り付ける取付角を連続的に減少さ
せる領域と、取付角が連続的に増加する領域を各翼に形
成している。2. Description of the Related Art Conventionally, among the axial blowers of this type, the one for reducing the blowing noise is Japanese Patent Publication No. 63-1304.
Some are published in No. 0 publication. This axial blower
Each wing is formed with a region in which the mounting angle for mounting a plurality of blades on the boss portion is continuously reduced and a region in which the mounting angle is continuously increased.
【０００３】また、他の従来の軸流送風機としては、基
本翼形状は周知形状のままで各翼に補助ブレードを設け
たり、翼先端部を内方に折り曲げ、あるいはファンの外
周に配されるハウジングを末広がり形状に形成したりし
て翼面上で二次的に派生する気流の改良を図っている。As another conventional axial blower, the basic blade shape is a well-known shape, each blade is provided with an auxiliary blade, the blade tip portion is bent inward, or is arranged on the outer periphery of the fan. The housing is formed in a divergent shape to improve the secondary airflow on the blade surface.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の軸流送風機では、送風騒音の低減と送風量の
増大とを共に図ることが容易ではないという課題があ
る。また、各翼の取付角を連続的に変化させたり、補助
ブレードを設ける等により各翼の形状が複雑であるの
で、これらの軸流ファンを例えばプラスチックスの射出
成形により製造する場合に使用される金型が複雑にな
り、そのために金型が高価になるという課題がある。However, in such a conventional axial blower, there is a problem that it is not easy to reduce both the blowing noise and the blowing amount. Also, since the shape of each blade is complicated by continuously changing the mounting angle of each blade or providing an auxiliary blade, it is used when these axial fans are manufactured by injection molding of plastics, for example. However, there is a problem that the die becomes complicated and the die becomes expensive.
【０００５】本発明はこのような事情を考慮してなされ
たもので、その目的は簡単な構成により送風騒音の低減
と送風量との増大とを共に図ることができる軸流送風機
を提供することにある。The present invention has been made in view of the above circumstances, and an object thereof is to provide an axial blower capable of reducing the blast noise and increasing the blast volume with a simple structure. It is in.
【０００６】[0006]
【課題を解決するための手段】請求項１の発明は、回転
軸が固定されるボス部の外周に、複数の翼を配設する軸
流送風機において、上記各翼は、その送風機半径方向中
間部が、そのボス部側の翼根元部およびその反対側の翼
先端部よりも空気吸込側へ突出するように折曲され、こ
の突出頂部から上記翼根元部および翼先端部に向けて下
り傾斜面を形成してなることを特徴とする軸流送風機で
ある。According to a first aspect of the present invention, there is provided an axial flow blower in which a plurality of blades are arranged on the outer circumference of a boss portion to which a rotary shaft is fixed. Part is bent so as to project toward the air suction side from the blade root part on the boss side and the blade tip part on the opposite side, and descends from the protruding top toward the blade root part and the blade tip part. It is an axial blower characterized by forming a surface.
【０００７】この発明によれば、各翼がボス部の中心軸
周りに回転すると、空気が各翼の負圧から吸い込まれ、
この負圧面の突出頂部を境に、その両側の下り傾斜面に
沿って流れる斜流を強制的に生ぜしめ、各翼の翼先端外
側において正圧面側から負圧面側へ巻き込まれて逆流す
る空気の巻込みを低減ないし防止することができる。According to this invention, when each blade rotates about the central axis of the boss, air is sucked from the negative pressure of each blade,
Air that is forced to generate a diagonal flow that flows along the descending inclined surfaces on both sides of the protruding top of the suction surface, and is entrained from the pressure surface side to the suction surface side on the outside of the blade tip of each blade and flows backward. Can be reduced or prevented.
【０００８】したがって、この空気の巻込みの乱流や渦
流により発生する送風騒音を低減ないし防止することが
できると共に、この正圧面側から負圧面側への空気の巻
込みを低減ないし防止できる分だけ正圧面側からの送風
量もさらに増大させることができ、送風効率を向上させ
ることができる。また、各翼を、その送風機半径方向中
間部が空気吸込み側へ突出するように折曲するという簡
単な構成であるので、その製造用の金型のコスト低減を
図ることができると共に、量産性の向上を図ることがで
きる。Therefore, it is possible to reduce or prevent the blast noise generated by the turbulent flow or vortex of the entrainment of air and reduce or prevent the entrainment of air from the positive pressure surface side to the negative pressure surface side. Therefore, the amount of air blown from the positive pressure surface side can be further increased, and the air blowing efficiency can be improved. In addition, since each blade has a simple structure in which the blower radial direction middle part projects so as to project to the air intake side, it is possible to reduce the cost of the mold for manufacturing the blade and to improve mass productivity. Can be improved.
【０００９】請求項２の発明は、上記各翼の突出頂部
は、各翼の送風機半径方向全長の２０〜８０％の範囲内
にて形成されていることを特徴とする請求項１記載の軸
流送風機である。[0009] According to a second aspect of the invention, the projecting top of each wing, the axis of claim 1, wherein the are formed by the 20-80% range of the blower radial entire length of each wing It is a blower.
【００１０】この発明によれば、各翼の突出頂部を、各
翼の送風機半径方向全長の２０〜８０％の範囲内に配置
したので、送風騒音の低減と送風量の増大とを共に図る
ことができる。According to the present invention, since the protruding tops of the blades are arranged within a range of 20 to 80% of the total length of the blades in the radial direction of the blower, both reduction of the blowing noise and increase of the blowing amount can be achieved. You can
【００１１】請求項３の発明は、上記各翼は、その突出
頂部の稜線が各翼の送風機、半径方向全長のほぼ等分位
置にて送風機周方向に沿う全幅に亘って円弧状に表われ
るように折曲形成されていることを特徴とする請求項１
または２記載の軸流送風機である。[0011] The invention of claim 3, each wing, appearing in an arc shape ridge line of the projection apex blower of each wing, over the entire width along the fan circumferential direction at substantially equal radial positions full length It is bent and formed as follows.
Alternatively, it is the axial blower described in 2.
【００１２】この発明によれば、各翼の突出頂部の稜線
が各翼の送風機半径方向ほぼ等分位置において送風機周
方向に沿う全幅に亘って形成され、各翼のほぼ同位置に
形成されているので、ボス部を中心とした左右対称性を
全周に亘って向上させることができる。このために、空
気の吸込みと送風の対称性も向上させることができるの
で、送風騒音と送風量の増大をさらに向上させることが
できる。According to the present invention, the ridgeline of the protruding top of each blade is formed over the entire width along the circumferential direction of the blower at substantially equal positions in the radial direction of the blower, and is formed at substantially the same position of each blade. Therefore, the left-right symmetry around the boss can be improved over the entire circumference. For this reason, the symmetry of the intake of air and the blast can also be improved, so that the increase in blast noise and blast volume can be further improved.
【００１３】請求項４の発明は、請求項１〜３のいずれ
か１項に記載の軸流送風機と、この軸流送風機からの送
風を自動車用熱交換器に導風するファンケーシングと、
を具備していることを特徴とする自動車用熱交換器の冷
却ファンである。According to a fourth aspect of the present invention, there is provided an axial blower according to any one of the first to third aspects, and a fan casing for guiding the air blown from the axial blower to a heat exchanger for an automobile.
A cooling fan for a heat exchanger for an automobile, comprising:
【００１４】この発明によれば、請求項１〜３のいずれ
かに１項記載の軸流送風機を具備しているので、自動車
用ラジエータ等の熱交換器の冷却用ファンとしてもこれ
ら発明と同一の作用効果を奏することができる。According to the present invention, since the axial blower according to any one of claims 1 to 3 is provided, it is the same as the invention as a cooling fan for a heat exchanger such as an automobile radiator. It is possible to exert the effect of.
【００１５】[0015]
【発明の実施の形態】以下、本発明の一実施形態を図１
〜図５に基づいて説明する。これらの図中、同一または
相当部分には同一符号を付している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIG.
~ It demonstrates based on FIG. In these figures, the same or corresponding parts are designated by the same reference numerals.
【００１６】図１は図２で示す本発明の一実施形態に係
る軸流送風機１の正面図のＩ−Ｉ線に沿う切断部の断面
図、図３は図２の背面図である。FIG. 1 is a sectional view of a cutting portion taken along line I-I of the front view of the axial flow fan 1 according to the embodiment of the present invention shown in FIG. 2, and FIG. 3 is a rear view of FIG.
【００１７】図１〜図３に示すように軸流送風機１は図
示しないモータ等の回転軸が挿入されて固定される有底
円筒状のボス部２の外周側面に、複数の翼３，３…を周
方向に例えば等ピッチ、かつ所定の取付角で一体に取り
付けており、これらボス部２と各翼３は例えばプラスチ
ックスの射出成形等により一体に連成されている。As shown in FIGS. 1 to 3, the axial blower 1 has a plurality of blades 3, 3 on the outer peripheral side surface of a bottomed cylindrical boss portion 2 into which a rotary shaft such as a motor (not shown) is inserted and fixed. Are integrally mounted in the circumferential direction at an equal pitch and at a predetermined mounting angle, and the boss portion 2 and each blade 3 are integrally coupled by, for example, injection molding of plastics.
【００１８】図３に示すように、ボス部２は、複数の翼
３を一体に連成する有底円筒状のボス本体部２ａと、こ
のボス本体部２ａの内底部中央部上に突設されて、図示
しないモータ等駆動手段の回転軸を挿入せしめて固定す
る環状の固定スリーブ２ｂと、この固定スリーブ２ｂと
ボス本体部２ａとを一体に連結して強度の補強を図る環
状や棒状の複数のリブ２ｃと、を一体に連成している。As shown in FIG . 3, the boss portion 2 has a bottomed cylindrical boss body portion 2a integrally connecting a plurality of blades 3 and a projecting portion on the center of the inner bottom portion of the boss body portion 2a. Then, an annular fixing sleeve 2b for inserting and fixing the rotary shaft of a driving means (not shown) such as a motor, and an annular or rod-like shape for reinforcing the strength by integrally connecting the fixing sleeve 2b and the boss body 2a. A plurality of ribs 2c are integrally formed.
【００１９】一方、図２に示すように、各翼３は、正面
形状がほぼ矩形に形成された翼本体３ａを有し、この翼
本体３ａにおける図２，３中、白矢印で示す送風機回転
方向に対する前縁３ｂと後縁３ｃとを、その送風機回転
方向に沿って円弧状に前傾させる円弧面に形成すると共
に、ボス部２の外周側面に一体に取り付けられる翼根元
部３ｄから送風機半径方向外方の翼先端部３ｅに向け
て、送風機周方向に沿う翼幅を翼先端部３ｅへ行くに従
って漸次拡幅して翼本体３ａを末広形状に形成してい
る。On the other hand, as shown in FIG. 2, each blade 3 has a blade main body 3a whose front shape is formed into a substantially rectangular shape, and the blower rotation indicated by the white arrow in FIGS. 2 and 3 in this blade main body 3a. The front edge 3b and the rear edge 3c with respect to the direction are formed into arc surfaces that are inclined forward in an arc shape along the fan rotation direction, and the fan radius from the blade root 3d integrally attached to the outer peripheral side surface of the boss portion 2 The blade body 3a is formed in a divergent shape by gradually widening the blade width along the blower circumferential direction toward the blade tip portion 3e which is outward in the direction, as it goes to the blade tip portion 3e.
【００２０】また、図１にも示すように各翼３は、図中
太矢印で示す空気の吸込み側に対向する面を負圧面３ｆ
に、その裏面側を正圧面３ｇにそれぞれ形成し、空気を
負圧面３側から吸い込み、正圧面３ｇ側から軸方向外方
へ送風するようになっている。Further, as shown in FIG. 1, each blade 3 has a negative pressure surface 3f on the surface facing the air intake side, which is indicated by a thick arrow in the figure.
Further, the back surface side thereof is formed on each of the positive pressure surfaces 3g so that air is sucked from the negative pressure surface 3 side and is blown outward from the positive pressure surface 3g side in the axial direction.
【００２１】そして、図１に示すように、各翼３は、送
風機半径方向ほぼ等分位置の中間部が翼根元部３ｄと翼
先端部３ｅよりも空気吸込側へ所定量突出するように翼
本体３ａをほぼくの字状に折曲し、この突出頂部３ｈ
と、翼根元部３ｄおよび翼先端部３ｅとの各間の翼面
に、内側，外側下り傾斜面３ｉ，３ｊをそれぞれ一体に
連成している。このために、図２に示すように各翼３の
突出頂部３ｈの稜線が負圧面３ｆ上の送風機半径方向ほ
ぼ等分位置にて送風機周方向に沿う翼幅の全幅に亘って
円弧状に形成され、この各翼３の各突出頂部３ｈの稜線
は送風機回転中心Ｏからほぼ同一円周上に表わされる。As shown in FIG. 1, the blades 3 are arranged such that an intermediate portion at substantially equal positions in the radial direction of the blower protrudes toward the air intake side by a predetermined amount from the blade root portion 3d and the blade tip portion 3e. The main body 3a is bent in a substantially V shape, and the protruding top portion 3h
The inner and outer downward slopes 3i and 3j are integrally formed on the blade surfaces between the blade root portion 3d and the blade tip portion 3e. For this reason, as shown in FIG. 2, the ridgeline of the protruding top portion 3h of each blade 3 is formed in an arc shape over the entire width of the blade along the circumferential direction of the blower at substantially equal positions in the radial direction of the blower on the suction surface 3f. The ridgeline of each protruding top portion 3h of each blade 3 is represented on the substantially same circumference from the blower rotation center O.
【００２２】したがって、この軸流送風機１が回転駆動
されると、図１の太線矢印に示すように空気が負圧面３
ｆ側から吸い込まれ、各翼３の負圧面３ｆの各突出頂部
３ｈから内側と外側下り傾斜面３ｉ，３ｊをそれぞれ流
下する斜流が強制的に発生される。Therefore, when the axial blower 1 is driven to rotate, air is sucked into the negative pressure surface 3 as shown by the thick arrow in FIG.
A mixed flow is forcibly generated by being sucked in from the f side and flowing down from the protruding tops 3h of the negative pressure surface 3f of each blade 3 to the inner and outer downward inclined surfaces 3i and 3j, respectively.
【００２３】そして、この斜流のうち外側傾斜面３ｊを
それぞれ流下する斜流は、その風速と送風量とを増大さ
せて、各翼先端部３ｅの外側にて負圧面３ｆ側から正圧
面３ｇ側へ送風される。Of the mixed flow, the mixed flow flowing down the outer inclined surface 3j increases its wind speed and the amount of blown air, and from the negative pressure surface 3f side to the positive pressure surface 3g outside each blade tip portion 3e. Is blown to the side.
【００２４】このように各外側下り傾斜面３ｊ上を流下
して風速と送風量とを共に増大させた送風は、各翼３の
翼先端部３ｅ外側にて圧力差により正圧面３ｇから負圧
面３ｆ側へ巻き込まれて逆流する空気の巻込みを低減な
いし防止することができる。In this way, the blown air that has flown down on each of the outer downward slopes 3j to increase both the wind speed and the blown air volume is forced from the positive pressure surface 3g to the negative pressure surface due to the pressure difference outside the blade tip portions 3e of each blade 3. It is possible to reduce or prevent the entrainment of the air that is caught in the 3f side and flows backward.
【００２５】したがって、この空気の巻込みの乱流や渦
流により発生する送風騒音を低減することができる。ま
た、この空気の巻込みを低減できる分だけ、さらに送風
量を増大させて送風効率を向上させることができる。Therefore, it is possible to reduce the blast noise generated by the turbulent flow or vortex of the entrainment of air. In addition, the amount of air blown can be further increased and the air blow efficiency can be improved by the amount by which the entrainment of air can be reduced.
【００２６】また、各翼３の突出頂部３ｈの稜線が各翼
３の送風機半径方向ほぼ等分位置において送風機周方向
に沿う全幅に亘って形成され、各翼３のほぼ同位置に形
成されているので、ボス部２を中心とした左右対称性を
全周に亘って向上させることができる。このために、空
気の吸込みと送風の対称性も向上させることができるの
で、送風騒音と送風量の増大をさらに向上させることが
できる。Further, the ridgeline of the protruding top portion 3h of each blade 3 is formed over the entire width along the circumferential direction of the blower at substantially equal positions of the blade 3 in the radial direction of the blower, and is formed at substantially the same position of each blade 3. Therefore, the left-right symmetry around the boss portion 2 can be improved over the entire circumference. For this reason, the symmetry of the intake of air and the blast can also be improved, so that the increase in blast noise and blast volume can be further improved.
【００２７】なお、上記実施形態では突出頂部３ｈを各
翼３の送風機半径方向ほぼ等分位置に位置させる場合に
ついて説明したが、本発明はこれに限定されるものでは
なく、各翼３の送風機半径方向全長の２０〜８０％の長
さの領域に形成すれば、ほぼ同様の効果を奏することが
できる。In the above embodiment, the case where the protruding tops 3h are located at substantially equal positions of the blades 3 in the radial direction of the blower has been described, but the present invention is not limited to this, and the blower of each blade 3 is not limited to this. If it is formed in a region having a length of 20 to 80% of the total length in the radial direction, substantially the same effect can be obtained.
【００２８】図４は、本発明の第２の実施形態に係る自
動車のラジエータ用冷却ファン１Ａの一部切欠側断面
図、図５はその背面図である。この冷却ファン１Ａは図
示しない自動車の熱交換器の一種である例えばラジエー
タに空気を送風して冷却するものであり、上記軸流送風
機１をファンケーシング１１に組み付けることにより構
成されている。ファンケーシング１１は、両端が開口し
た偏平角筒状のケーシング本体１１ａと、このケーシン
グ本体１１ａ内のほぼ中央部に配設される円筒状のベル
マウス１１ｂと、このベルマウス１１ｂをケーシング本
体１１ａの内側背面に連結する板状や棒状等の複数のリ
ブ１１ｃと、ベルマウス１１ｂの中央部背面側（吐出口
側）に同心状に配設されて軸流送風機１を回転駆動する
モータ１２を固定せしめる円板状のモータ固定台１１ｄ
と、このモータ固定台１１ｄの外周に放射状に形成され
てこのモータ固定台１１ｄをベルマウス１１ｂとケーシ
ング本体１１ａの背面に連結する複数の連結リブ１１ｅ
とを、例えば合成樹脂のモールド成形等により一体に連
成している。FIG. 4 is a partially cutaway side sectional view of a vehicle radiator radiator fan 1A according to a second embodiment of the present invention, and FIG. 5 is a rear view thereof. The cooling fan 1A is for cooling air by blowing air to a radiator, which is a type of heat exchanger of an automobile (not shown), for example, and is constructed by assembling the axial blower 1 in a fan casing 11. The fan casing 11 includes a casing main body 11a having a flat rectangular tube shape with both ends open, a cylindrical bell mouth 11b arranged substantially in the center of the casing main body 11a, and the bell mouth 11b provided in the casing main body 11a. A plurality of plate-shaped or rod-shaped ribs 11c that are connected to the inner back surface and a motor 12 that is concentrically arranged on the central rear surface side (discharge port side) of the bell mouth 11b and that rotationally drives the axial blower 1 are fixed. Disc-shaped motor fixing base 11d
And a plurality of connecting ribs 11e radially formed on the outer periphery of the motor fixing base 11d to connect the motor fixing base 11d to the bell mouth 11b and the back surface of the casing body 11a.
And are integrally coupled by, for example, molding of synthetic resin.
【００２９】そして、ベルマウス１１ｂ内に上記軸流送
風機１を同心状に配設し、そのボス部２の固定スリーブ
２ｂ内にモータ１２の回転軸の先端部を挿入して固定し
ている。The axial blower 1 is concentrically arranged in the bell mouth 11b, and the tip of the rotary shaft of the motor 12 is inserted and fixed in the fixed sleeve 2b of the boss 2.
【００３０】したがって、このラジエータ用冷却ファン
１Ａは上記軸流送風機１をファンケーシング１１に組み
付けているので、この軸流送風機１と同様に送風騒音の
低減と送風量の増大とを共に図ることができる。Therefore, in this radiator cooling fan 1A, since the axial blower 1 is assembled in the fan casing 11, it is possible to reduce the blowing noise and increase the blowing amount in the same manner as the axial blower 1. it can.
【００３１】図６はこの冷却ファン１Ａを図示しない自
動車のラジエータに組み付けた状態の送風量と騒音の相
互関係を、従来周知のラジエータ用冷却ファンのものと
比較して示すグラフである。この図６に示すように本実
施形態に係る冷却ファン１Ａは、従来の冷却ファンより
も、例えば約６００〜９００ｍ３／ｈｒの送風量の全域
に亘って約１〜５ｄＢ程度の騒音を低減することがで
き、特に従来例に比して送風量が増大するに従って騒音
低減効果を向上させることができる。FIG. 6 is a graph showing the interrelationship between the air flow rate and the noise when the cooling fan 1A is mounted on a radiator of an automobile (not shown) in comparison with that of a conventionally known radiator cooling fan. As shown in FIG. 6, the cooling fan 1A according to the present embodiment reduces the noise of about 1 to 5 dB over the entire range of the blowing amount of about 600 to 900 m 3 / hr, as compared with the conventional cooling fan. In particular, as compared with the conventional example, the noise reduction effect can be improved as the air flow rate increases.
【００３２】さらに、図７はこの冷却ファン１Ａを図示
しない自動車のラジエータに組み付けた状態の消費電力
と送風量との相互関係を、上記従来のラジエータ用冷却
ファンのものと比較して示すグラフである。この図６に
示すように本実施形態に係る冷却ファン１Ａは、従来の
冷却ファンよりも、例えば約３０〜９８Ｗのモータ１２
の消費電力（回転速度）の全域に亘って約４０〜５０ｍ
３／ｈｒ程度の送風量を増大させることができる。Further, FIG. 7 is a graph showing the mutual relationship between the power consumption and the air flow when the cooling fan 1A is mounted on a radiator of an automobile (not shown) in comparison with that of the conventional cooling fan for radiator. is there. As shown in FIG. 6, the cooling fan 1A according to the present embodiment has a motor 12 of, for example, about 30 to 98 W more than a conventional cooling fan.
40 to 50m over the entire power consumption (rotation speed) of
It is possible to increase the air flow rate of about 3 / hr.
【００３３】[0033]
【発明の効果】以上説明したように本発明は、各翼を、
その送風機半径方向中間部が翼根元部と翼先端部よりも
空気吸込側へ突出するように折曲して、この突出頂部の
両側に傾斜面を形成したので、送風騒音の低減と送風量
の増大とを共に図ることができる。また、各翼を、その
送風機半径方向中間部が空気吸込み側へ突出するように
折曲するという簡単な構成であるので、その製造用の金
型のコスト低減を図ることができると共に、量産性の向
上を図ることができる。As described above, according to the present invention, each blade is
The air blower radial middle part was bent so as to project toward the air intake side rather than the blade root part and the blade tip part, and inclined surfaces were formed on both sides of this protruding top part, so reduction of blowing noise and blowing amount Can be increased together. In addition, since each blade has a simple structure in which the blower radial direction middle part projects so as to project to the air intake side, it is possible to reduce the cost of the mold for manufacturing the blade and to improve mass productivity. Can be improved.
【図１】図２のＩ−Ｉ線に沿う切断部の断面図。FIG. 1 is a cross-sectional view of a cut portion taken along line I-I of FIG.
【図２】本発明の一実施形態に係る軸流送風機の正面
図。FIG. 2 is a front view of the axial blower according to the embodiment of the present invention.
【図３】図２の背面図。FIG. 3 is a rear view of FIG.
【図４】本発明の第２実施形態に係る自動車のラジエー
タ用冷却ファンの一部切欠縦断面図。FIG. 4 is a partially cutaway vertical sectional view of a cooling fan for a radiator of an automobile according to a second embodiment of the present invention.
【図５】図４の背面図。5 is a rear view of FIG.
【図６】図４，図５で示す冷却ファンの送風量と騒音の
相互関係を示すグラフ。FIG. 6 is a graph showing a mutual relationship between the air flow rate and noise of the cooling fan shown in FIGS. 4 and 5.
【図７】図４，図５で示す冷却ファンの送風量と消費電
力の相互関係を示すグラフ。FIG. 7 is a graph showing a mutual relationship between the air flow rate and power consumption of the cooling fan shown in FIGS. 4 and 5.
１ 軸流送風機 １Ａ ラジエータ用冷却ファン ２ ボス部 ３ 翼 ３ａ 翼本体 ３ｂ 前縁部 ３ｃ 後縁部 ３ｄ 翼根元部 ３ｅ 翼先端部 ３ｆ 負圧面 ３ｇ 正圧面 ３ｈ 突出頂部 ３ｉ 内側下り傾斜面 ３ｊ 外側下り傾斜面 １１ ファンケーシング １１ａ ファンケーシング本体 １１ｂ ベルマウス １２ モータ 1 axial blower 1A radiator cooling fan 2 Boss 3 wings 3a wing body 3b front edge 3c rear edge 3d wing root 3e Blade tip 3f suction surface 3g Positive pressure surface 3h protruding top 3i inner downward slope 3j Outside downward slope 11 fan casing 11a fan casing body 11b Bellmouth 12 motors
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F04D 29/38 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) F04D 29/38
Claims (4)
数の翼を配設する軸流送風機において、 上記各翼は、その送風機半径方向中間部が、そのボス部
側の翼根元部およびその反対側の翼先端部よりも空気吸
込側へ突出するように折曲され、この突出頂部から上記
翼根元部および翼先端部に向けて下り傾斜面を形成して
なることを特徴とする軸流送風機。1. An axial-flow blower in which a plurality of blades are arranged on the outer periphery of a boss portion to which a rotating shaft is fixed, wherein each blade has a blade root portion on the boss portion side in the blower radial direction intermediate portion. And is bent so as to project toward the air suction side with respect to the blade tip portion on the opposite side, and a downward inclined surface is formed from the protruding top portion toward the blade root portion and the blade tip portion. Axial blower.
径方向全長の２０〜８０％の範囲内にて形成されている
ことを特徴とする請求項１記載の軸流送風機。Wherein the protruding top portion of each blade, axial flow fan according to claim 1, characterized in that it is formed in the range of 20-80% of the blower radial entire length of each wing.
の送風機半径方向全長のほぼ等分位置にて送風機周方向
に沿う全幅に亘って円弧状に表われるように折曲形成さ
れていることを特徴とする請求項１または２記載の軸流
送風機。Wherein each blade has its ridge line of the projection apex is formed bent so as appearing in an arc shape over the entire width along the fan circumferential direction at approximately equal positions of the blower radial entire length of each wing The axial blower according to claim 1 or 2, characterized in that.
流送風機と、 この軸流送風機からの送風を自動車用熱交換器に導風す
るファンケーシングと、 を具備していることを特徴とする自動車用熱交換器の冷
却ファン。4. An axial flow fan according to any one of claims 1 to 3, and a fan casing for guiding the air blown from the axial flow fan to a heat exchanger for an automobile. A cooling fan for a heat exchanger for automobiles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36530199A JP3453093B2 (en) | 1999-12-22 | 1999-12-22 | Axial blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36530199A JP3453093B2 (en) | 1999-12-22 | 1999-12-22 | Axial blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001182690A JP2001182690A (en) | 2001-07-06 |
| JP3453093B2 true JP3453093B2 (en) | 2003-10-06 |
Family
ID=18483934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36530199A Expired - Fee Related JP3453093B2 (en) | 1999-12-22 | 1999-12-22 | Axial blower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3453093B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4576304B2 (en) * | 2005-08-03 | 2010-11-04 | 三菱重工業株式会社 | Propeller fan |
| US7815418B2 (en) | 2005-08-03 | 2010-10-19 | Mitsubishi Heavy Industries, Ltd. | Shroud and rotary vane wheel of propeller fan and propeller fan |
| JP5057418B2 (en) * | 2005-12-28 | 2012-10-24 | 臼井国際産業株式会社 | Axial fan |
| JP5846943B2 (en) * | 2012-02-01 | 2016-01-20 | 日立オートモティブシステムズ株式会社 | Electric vehicle control device and electric vehicle using the same |
| JP2014066187A (en) * | 2012-09-26 | 2014-04-17 | Panasonic Corp | Fan |
| CN107956723A (en) * | 2017-12-04 | 2018-04-24 | 江苏航天动力机电有限公司 | Two level Novel fan structure |
| CN117927946A (en) * | 2023-12-19 | 2024-04-26 | 广东昊森热能设备有限公司 | Venturi premixer capable of adjusting air inflow and combustion device |
-
1999
- 1999-12-22 JP JP36530199A patent/JP3453093B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001182690A (en) | 2001-07-06 |
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