JPH04366000A - Resinous axial fan - Google Patents

Resinous axial fan

Info

Publication number
JPH04366000A
JPH04366000A JP16644891A JP16644891A JPH04366000A JP H04366000 A JPH04366000 A JP H04366000A JP 16644891 A JP16644891 A JP 16644891A JP 16644891 A JP16644891 A JP 16644891A JP H04366000 A JPH04366000 A JP H04366000A
Authority
JP
Japan
Prior art keywords
camber
resinous
axial fan
blades
root
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
Application number
JP16644891A
Other languages
Japanese (ja)
Inventor
Kenichi Takayama
高山 健一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Usui Kokusai Sangyo Kaisha Ltd
Original Assignee
Usui Kokusai Sangyo Kaisha Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Usui Kokusai Sangyo Kaisha Ltd filed Critical Usui Kokusai Sangyo Kaisha Ltd
Priority to JP16644891A priority Critical patent/JPH04366000A/en
Publication of JPH04366000A publication Critical patent/JPH04366000A/en
Pending legal-status Critical Current

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE:To provide a resinous axial fan for enlarging the area at a root part of a vane, so as to sufficiently respond to a stress caused by centrifugal force or a bending moment of wind pressure. CONSTITUTION:A camber (b) of each root part side of a vane 3 is expressed as 2(a)<(b), in relation to a camber (a) on the front end side.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は一般に自動車機関にあっ
て、該機関の冷却用として使用される樹脂製軸流ファン
に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to a resin axial flow fan used for cooling an automobile engine.

【0002】0002

【従来の技術】従来、この種の軸流ファンとしては例え
ば図4にその関係を示すように、ハブ筒体の外周側面の
複数の翼片(13)を、それぞれの付け根部(13’)
 側のキャンバーと先端部(13”) 側のキャンバー
とを略等しい一定の弯曲面をもって形成されていた。
2. Description of the Related Art Conventionally, as shown in FIG. 4, in this type of axial flow fan, a plurality of blades (13) on the outer circumferential side of a hub body are connected to each other at their bases (13').
The camber on the side and the camber on the tip (13") side were formed with approximately the same constant curved surface.

【0003】0003

【発明が解決しようとする課題】一般に軸流ファンにお
ける回転強度は、翼片の遠心力と風圧力に左右されるも
のである。従って自動車等の高速回転による機関にあっ
ては、特にその翼片の付け根部の強度が重要視されると
ころである。しかしながら、ラヂエーター背面の概して
狹いスペースに取付けられる前記軸流ファンにおいては
、付け根部でのハブ筒体の幅に取付け方向の制限を余儀
なくされるため、該付け根部に機械的強度上の問題を有
する傾向にあった。また高風量化の要求に対しては翼片
角度(α)を大きくとらなければならないため、翼片の
付け根部の面積が小さくなり遠心力による応力と風圧の
曲げモーメントによる応力との相乗作用により強度上の
問題があった。
[Problems to be Solved by the Invention] Generally, the rotational strength of an axial fan depends on the centrifugal force of the blades and the wind pressure. Therefore, in engines such as automobiles that rotate at high speed, the strength of the root portions of the blades is particularly important. However, in the above-mentioned axial fan, which is installed in a generally narrow space behind the radiator, the width of the hub body at the root part has to limit the installation direction, which causes mechanical strength problems at the root part. There was a tendency to have In addition, in order to meet the demand for high airflow, the blade angle (α) must be made large, which reduces the area of the root of the blade, resulting in a synergistic effect between stress due to centrifugal force and stress due to the bending moment of wind pressure. There was a strength problem.

【0004】本発明は従来技術の有する前記問題に鑑み
てなされたもので、付け根部での面積を拡大せしめ、回
転時の遠心力による外方への引張り荷重や風圧の曲げモ
ーメントによる応力に対して充分に対処できる樹脂製軸
流ファンを提供することを目的とするものである。
The present invention has been made in view of the above-mentioned problems of the prior art, and is designed to expand the area at the base and to withstand stress caused by outward tensile loads caused by centrifugal force during rotation and bending moments caused by wind pressure. It is an object of the present invention to provide a resin-made axial flow fan that can sufficiently cope with the above problems.

【0005】[0005]

【課題を解決するための手段】本発明は上記目的を達成
するため、内側に相手基体への取付け壁を有するハブ筒
体の外周側面に、複数からなる外方への放射状翼片を突
設したファンにおいて、前記翼片のそれぞれの付け根部
側のキャンバー(b) を先端部側のキャンバー(a)
 に対して2(a)≦(b) となして形成した樹脂製
軸流ファンを要旨とするものである。
[Means for Solving the Problems] In order to achieve the above object, the present invention includes a plurality of outwardly projecting radial wing pieces on the outer circumferential side of a hub cylinder having an inner wall for attachment to a mating base body. In the fan, the camber (b) on the root side of each of the blades is the camber (a) on the tip side.
The gist of this invention is a resin-made axial flow fan formed such that 2(a)≦(b).

【0006】[0006]

【作用】本発明はこのように形成されているため、前記
ハブ筒体の限られた幅に亘って翼片の付け根部側でのキ
ャンバーを弯曲面のなす充分な弦長によって成形して面
積を拡大することとなり、従って機関の高速回転時にあ
っても翼片に加わる遠心力による外方への引張り荷重や
風圧の曲げモーメントに対して、それぞれの付け根部で
の上記した応力を低下させ機械的強度を増大して充分に
対処できると共に、キャンバー大により断面係数が大き
くとれ、曲げ剛性を向上することとなる。
[Operation] Since the present invention is formed in this way, the camber on the root side of the wing piece is formed by a sufficient chord length of the curved surface over the limited width of the hub cylinder, and the area is reduced. Therefore, even when the engine rotates at high speed, the above-mentioned stress at the root of each blade is reduced and the machine In addition to increasing the target strength, the large camber allows for a large section modulus and improves bending rigidity.

【0007】[0007]

【実施例】以下、本発明の実施例を図面に基づいて説明
すれば、図1は本発明の樹脂製軸流ファンの切欠きによ
る一部の平面図、図2は図1の上面図、図3は本発明の
要部に係る翼片の関係状態を示す説明図であって、(1
) はハブ筒体であり、内側に流体継手やウォーターポ
ンプ等の相手基体(図示せず)への組付け孔(2) を
穿設した取付け壁(1’)を有し、且つ外周側面に複数
からなる外方への放射状翼片(3)を射出成型により一
体に突設するか、或いはインサートを介して突設して形
成された樹脂製軸流ファンである。そして翼片(3) 
のそれぞれの付け根部側のキャンバー(b) を先端部
側のキャンバー(a)に対して約2倍以上、即ち2(a
)≦(b) の関係をもって形成されるものである。
[Embodiments] Hereinafter, embodiments of the present invention will be described based on the drawings. Fig. 1 is a plan view of a part of the resin axial fan of the present invention with a cutout, Fig. 2 is a top view of Fig. 1, FIG. 3 is an explanatory diagram showing the relational state of the blades according to the main part of the present invention, (1
) is a hub cylindrical body, which has a mounting wall (1') on the inside with a hole (2) for assembling it to a mating body (not shown) such as a fluid coupling or water pump, and has a mounting wall (1') on the outer circumferential side. This is a resin-made axial flow fan formed by integrally protruding a plurality of outward radial blades (3) by injection molding or protruding through an insert. and wing pieces (3)
The camber (b) on the base side of each is approximately twice the camber (a) on the tip side, that is, 2(a).
)≦(b).

【0008】尚、前記数値に限定した理由は、実験の結
果それ未満にあっては軸流ファンとしての機械的強度(
上記した遠心力による応力や風圧の曲げモーメントによ
る応力の相乗作用に対する機械的強度)を充分に満足し
難いためである。
[0008] The reason for limiting the value to the above value is that, as a result of experiments, if the value is less than that, the mechanical strength (
This is because it is difficult to sufficiently satisfy the mechanical strength against the synergistic effect of stress due to centrifugal force and stress due to bending moment of wind pressure.

【0009】[0009]

【発明の効果】以上説明したように本発明による樹脂製
軸流ファンは、特に前記翼片(3) のそれぞれの付け
根部側のキャンバー(b) を先端部側のキャンバー(
a) に対して2(a)≦(b) の関係に成形してな
るため、翼片(3) の付け根部の肉厚を増すことなし
に該付け根部での面積の拡大に伴い機械的強度を増大す
ることができ、従って高速回転時にあっても遠心力によ
る外方への引張り荷重や風圧の曲げモーメントによる応
力に充分対処することができる極めて有用な樹脂製軸流
ファンである。
As explained above, in the resin axial flow fan according to the present invention, in particular, the camber (b) on the root side of each of the blades (3) is changed from the camber (b) on the tip side to
2(a)≦(b) with respect to a), the mechanical strength increases as the area at the root of the blade (3) increases without increasing the wall thickness at the root of the blade (3). This is an extremely useful resin-made axial flow fan that has increased strength and can therefore sufficiently cope with stress caused by outward tensile loads caused by centrifugal force and bending moments caused by wind pressure even during high-speed rotation.

【図面の簡単な説明】[Brief explanation of the drawing]

【図1】本発明の一実施例に係る樹脂製軸流ファンの切
欠きによる一部の平面図である。
FIG. 1 is a plan view of a portion of a resin axial fan according to an embodiment of the present invention, with a cutout.

【図2】図1の上面図である。FIG. 2 is a top view of FIG. 1;

【図3】本発明の要部に係る翼片の関係状態を示す説明
図である。
FIG. 3 is an explanatory diagram showing the relational state of blades according to the main part of the present invention.

【図4】従来例を示す翼片の関係状態の説明図である。FIG. 4 is an explanatory diagram of the relational state of blades showing a conventional example.

【符号の説明】[Explanation of symbols]

3  翼片 a  キャンバー b  キャンバー 3 Wing piece a Camber b Camber

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  内側に相手基体への取付け壁を有する
ハブ筒体の外周側面に、複数からなる外方への放射状翼
片を突設したファンにおいて、前記翼片(3) のそれ
ぞれの付け根部側のキャンバー(b) を先端部側のキ
ャンバー(a) に対して、2(a)≦(b) となし
て形成したことを特徴とする樹脂製軸流ファン。
1. A fan comprising a plurality of outwardly radial blades projecting from the outer circumferential side of a hub cylinder having an inner wall for attachment to a mating base, the base of each of the blades (3). A resin-made axial flow fan characterized in that the camber (b) on the front end side is formed such that 2(a)≦(b) with respect to the camber (a) on the front end side.
JP16644891A 1991-06-11 1991-06-11 Resinous axial fan Pending JPH04366000A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16644891A JPH04366000A (en) 1991-06-11 1991-06-11 Resinous axial fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16644891A JPH04366000A (en) 1991-06-11 1991-06-11 Resinous axial fan

Publications (1)

Publication Number Publication Date
JPH04366000A true JPH04366000A (en) 1992-12-17

Family

ID=15831598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16644891A Pending JPH04366000A (en) 1991-06-11 1991-06-11 Resinous axial fan

Country Status (1)

Country Link
JP (1) JPH04366000A (en)

Similar Documents

Publication Publication Date Title
KR100978594B1 (en) Automotive fan assembly with flared shroud and fan with conforming blade tips
US8550782B2 (en) Partial ring cooling fan
EP2264321B1 (en) Plastic propeller fan
JP4648606B2 (en) cooling fan
US5582507A (en) Automotive fan structure
US6082969A (en) Quiet compact radiator cooling fan
KR20000047976A (en) Axial flow fan
JPH0486399A (en) Axial-flow fan having centrifugal component
US5520513A (en) Fan apparatus
JP4161015B2 (en) Axial fan
KR100820856B1 (en) Axial flow fan
WO2009036403A2 (en) Fan with structural support ring
US20050260077A1 (en) Cooling fan
JPH04366000A (en) Resinous axial fan
KR0159521B1 (en) Fan mounted resistance plate of down flow
EP0733809A1 (en) Support bracket
KR102035317B1 (en) Axial flow fan
JPH0389000A (en) Heat exchanger cooling fan for automobile
KR100207565B1 (en) Fan and shroud assembly
US6413049B2 (en) Axial fan
US20230228279A1 (en) Banded cooling fan band having knit-line strength improvement
US20230130411A1 (en) Banded Cooling Fan Band having Knit-Line Strength Improvement
JPH02233899A (en) Axial fan
KR100487334B1 (en) axial flow fan apparatus
KR20220160689A (en) Band type cooling fan band with improved knit-line strength