JPH11148494A - Impeller of sirocco fan and metal mold for forming the same - Google Patents
Impeller of sirocco fan and metal mold for forming the sameInfo
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- JPH11148494A JPH11148494A JP31402597A JP31402597A JPH11148494A JP H11148494 A JPH11148494 A JP H11148494A JP 31402597 A JP31402597 A JP 31402597A JP 31402597 A JP31402597 A JP 31402597A JP H11148494 A JPH11148494 A JP H11148494A
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主として送風用に
使用されるシロッコファンの羽根車及びその成形用金型
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sirocco fan impeller mainly used for blowing air and a mold for molding the impeller.
【０００２】[0002]
【従来の技術】乾燥機などにおいて送風用にシロッコフ
ァンが使用されている。シロッコファンの羽根車は半径
方向に短く軸方向が長い多数枚の羽根板を持つ多翼ファ
ンであり、円板状の主板の外周縁にこの多数枚の羽根板
の基端を接合すると共に羽根板の先端をリング状の側板
で接続することによって全体として円筒状に形成される
ものである。2. Description of the Related Art A sirocco fan is used for blowing air in a dryer or the like. The impeller of a sirocco fan is a multi-blade fan having a large number of blade plates that are short in the radial direction and long in the axial direction. The base end of the large number of blade plates is joined to the outer peripheral edge of the disk-shaped main plate, and the blades are It is formed into a cylindrical shape as a whole by connecting the ends of the plates with ring-shaped side plates.
【０００３】このようなシロッコファンの羽根車は、一
般に、アルミニウムなどの金属板を加工して組み立てる
ことによって形成されている。そしてシロッコファンは
送風ファンの中では、同一直径・同一回転速度で最も多
くの流量と圧力が得られるので、最も小型に形成するこ
とができるという利点を有する。[0003] Such a sirocco fan impeller is generally formed by processing and assembling a metal plate such as aluminum. The sirocco fan has the advantage that it can be formed in the smallest size since the most flow rate and pressure can be obtained with the same diameter and the same rotation speed among the blower fans.
【０００４】[0004]
【発明が解決しようとする課題】しかしこのようなシロ
ッコファンにあっても、送風時の風量等のさらなる向上
が求められている。さらには、コストを低減することが
求められている。本発明は上記の点に鑑みてなされたも
のであり、送風時の送風量等を高く得ることができるシ
ロッコファンの羽根車を提供することを目的とするもの
であり、またこのようなシロッコファンの羽根車を安価
に作製することができる成形用金型を提供することを目
的とするものである。However, even with such a sirocco fan, there is a demand for further improvement in the air volume at the time of blowing. Further, there is a need to reduce costs. The present invention has been made in view of the above points, and an object of the present invention is to provide a sirocco fan impeller capable of obtaining a high air volume at the time of air blowing. It is an object of the present invention to provide a molding die capable of manufacturing the impeller at a low cost.
【０００５】[0005]
【課題を解決するための手段】本発明に係るシロッコフ
ァンの羽根車は、複数枚の羽根板１を円周上に配置して
設けて形成されるシロッコファンの羽根車において、各
羽根板１の一方の端部の断面の外形線を、φ１２０ｍｍ
の円周上の一点を原点ｏとし原点ｏを通るこの円の直径
線をｙ軸とするｘ−ｙ直角座標上に設定した座標（１．
０，８．０）〔座標の数値の単位はｍｍ、以下同じ〕を
中心として描かれる半径８．５ｍｍの円弧と上記φ１２
０ｍｍの円周との交点をａ、この半径８．５ｍｍの円弧
と上記φ１２０ｍｍの円と同心のφ９４ｍｍの円周との
交点をｂ、点ｏを原点とする座標（０．０，８．０）を
中心として描かれる半径８．５ｍｍの円弧と上記φ９４
ｍｍの円周との交点をｃ、この半径８．５ｍｍの円弧と
上記φ１２０ｍｍの円周との交点をｄとし、点ａと点ｂ
の間を両点を通る上記半径８．５ｍｍの円弧で、点ｂと
点ｃの間を点ｂと点ｃを通り中心が上記φ９４ｍｍの円
周より外側に位置する半径０．５ｍｍの円のうち上記φ
９４ｍｍの円周より内側の円弧で、点ｃと点ｄの間を両
点を通る上記半径８．５ｍｍの円弧で、点ｄと点ａの間
を上記φ１２０ｍｍの円の円弧でそれぞれ形成したとき
に、これらの各円弧上の各点の座標数値の±５％の範囲
に含まれる二次元曲線で形成し、各羽根板１の他方の端
部の断面の外形線を、上記点ｏを原点とし原点ｏを通る
φ１２０ｍｍの円の直径線をｙ軸とするｘ−ｙ直角座標
に設定した座標（１．０，８．０）を中心として描かれ
る半径８ｍｍの円弧と上記φ１２０ｍｍの円周との交点
をａ′、この半径８ｍｍの円弧と上記φ９４ｍｍの円周
との交点をｂ′、点ｏを原点とする座標（０．０，８．
０）を中心として描かれる半径９ｍｍの円弧と上記φ９
４ｍｍの円周との交点をｃ′、この半径９ｍｍの円弧と
上記φ１２０ｍｍの円周との交点をｄ′とし、点ａ′と
点ｂ′の間を上記半径８ｍｍの円弧で、点ｂ′と点ｃ′
の間を点ｂ′と点ｃ′を通り中心が上記φ９４ｍｍの円
周より外側に位置する半径１ｍｍの円のうち上記φ９４
ｍｍの円周より内側の円弧で、点ｃ′と点ｄ′の間を上
記半径９ｍｍの円弧で、点ｄ′と点ａ′の間を上記φ１
２０ｍｍの円の円弧でそれぞれ形成したときに、これら
の各円弧上の各点の座標数値の±５％の範囲に含まれる
二次元曲線で形成し、上記原点ｏと点ｂを結ぶ線とｙ軸
との間の角度と、上記原点ｏと点ｃを結ぶ線とｙ軸との
間の角度をそれぞれ基準にして、これらの各角度の±２
°の範囲で各羽根板の取り付け角度を設定して成ること
を特徴とするものである。A sirocco fan impeller according to the present invention is a sirocco fan impeller formed by arranging a plurality of impellers 1 on a circumference. The outline of the cross section of one end of
Is set on xy rectangular coordinates (1...) Having one point on the circumference of the circle as the origin o and the diameter line of this circle passing through the origin o as the y axis.
0,8.0) [the unit of the numerical value of the coordinate is mm, and the same applies hereinafter].
The point of intersection with the 0 mm circumference is a, the point of intersection of the arc of 8.5 mm radius with the circle of φ94 mm concentric with the circle of φ120 mm is b, and the coordinates with the point o as the origin (0.0, 8.0). ) And an arc of 8.5 mm in radius drawn around
The point of intersection between the circular arc having a radius of 8.5 mm and the above-mentioned circle having a diameter of 120 mm is denoted by d, and the point a and the point b
Between the point b and the point c, passing through the point b and the point c, and having a center located outside the circumference of the φ94 mm and having a radius of 0.5 mm. Of which φ
When an arc inside the circumference of 94 mm is formed by the above-mentioned 8.5 mm radius arc passing through both points c and d, and between the point d and the point a is formed by the above φ120 mm arc. Is formed by a two-dimensional curve included in a range of ± 5% of the coordinate value of each point on each of these arcs, and the outline of the cross section of the other end of each slat 1 And an arc with a radius of 8 mm drawn around coordinates (1.0, 8.0) set to xy rectangular coordinates with the diameter line of a circle of 120 mm passing through the origin o as the y axis, and the circumference of the above 120 mm Is an intersection point of a ', an intersection point of the circular arc having a radius of 8 mm and the circumference of φ94 mm is b', and coordinates (0.0,8.
0) and an arc with a radius of 9 mm and φ9
The intersection with the 4 mm circumference is c ', the intersection between the 9 mm radius arc and the φ120 mm circumference is d', and the point with the 8 mm radius arc between point a 'and point b' is point b ' And point c '
Of the circle having a radius of 1 mm passing through the point b 'and the point c' and having a center located outside the circumference of the φ94 mm.
mm, an arc having a radius of 9 mm between point c 'and point d', and φ1 between point d 'and point a'.
When each is formed by an arc of a 20 mm circle, it is formed by a two-dimensional curve included in a range of ± 5% of the coordinate value of each point on each of these arcs, and a line connecting the origin o and the point b and y With reference to the angle between the axis and the angle between the line connecting the origin o and the point c and the y axis, ± 2 of these angles
The mounting angle of each blade is set within the range of °.
【０００６】また本発明に係るシロッコファンの羽根車
成形用金型は、複数枚の羽根板を円周上に配置して設け
て形成されるシロッコファンの羽根車を合成樹脂により
成形するキャビティを設けて形成される金型であって、
一方の端部と他方の端部の外形形状が上記の二次元曲線
で形成されると共に取り付け角度が上記の角度に設定さ
れた羽根板を成形するようにキャビティの内面形状が形
成されて成ることを特徴とするものである。Further, the mold for molding an impeller of a sirocco fan according to the present invention has a cavity for molding a sirocco fan impeller formed of a synthetic resin by arranging a plurality of impellers on a circumference. A mold provided and formed,
The outer shape of one end and the other end is formed by the two-dimensional curve, and the inner surface shape of the cavity is formed so as to form a wing plate in which the mounting angle is set to the above angle. It is characterized by the following.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施の形態を説明
する。図２，３はシロッコファンの羽根車Ａの一例を示
すものであり、半径方向に短く軸方向に長い多数枚の羽
根板１を円周上に放射状に配置して形成されるものであ
る。図２，３は直径１２０ｍｍ、４８枚の羽根板１を具
備するタイプの羽根車Ａを示すものである。この羽根車
Ａにおいて、各羽根板１の基端は円板状の主板２の外周
端縁に一体に接合してあり、また各羽根板１の先端はリ
ング状の側板３で一体に連結するようにしてあって、Ａ
ＢＳ樹脂等の樹脂成形品で一体に形成するようにしてあ
る。このように形成される羽根車Ａは、主板２の中心を
回転軸として回転することによって使用されるものであ
り、側板３の内周側から吸引された空気は羽根板１間か
ら外方へ送られて送風されるものである。Embodiments of the present invention will be described below. 2 and 3 show an example of an impeller A of a sirocco fan, which is formed by arranging a large number of blade plates 1 radially short and axially long radially on the circumference. 2 and 3 show an impeller A of a type having a diameter of 120 mm and 48 blade plates 1. In this impeller A, the base end of each blade plate 1 is integrally joined to the outer peripheral edge of a disk-shaped main plate 2, and the tip end of each blade plate 1 is integrally connected by a ring-shaped side plate 3. A
It is formed integrally with a resin molded product such as a BS resin. The impeller A thus formed is used by rotating about the center of the main plate 2 as a rotation axis, and the air sucked from the inner peripheral side of the side plate 3 flows outward from between the impeller plates 1. It is sent and blown.
【０００８】そして本発明において、各羽根板１は長手
方向と垂直な面での断面形状の外形線を図１に示すよう
に形成するものである。すなわち、図１（ａ）は各羽根
板１の側板３に連結される先端部の断面形状を示すもの
であり、図１（ａ）においてｏはφ１２０ｍｍの円周上
の一点である。４８枚の羽根板１を有するタイプでは、
３６０°／４８＝７．５°の角度の等間隔でφ１２０ｍ
ｍの円周上の４８箇所に点ｏが設定される。In the present invention, each of the blades 1 has an outer shape of a sectional shape in a plane perpendicular to the longitudinal direction as shown in FIG. That is, FIG. 1A shows a cross-sectional shape of a tip portion connected to the side plate 3 of each blade plate 1, and in FIG. 1A, o is a point on the circumference of φ120 mm. In the type having 48 blades 1,
360 ° / 48 = 7.5 ° at equal intervals φ120m
Points o are set at 48 places on the circumference of m.
【０００９】そしてこの点ｏを原点とし、上記のφ１２
０ｍｍの円の原点ｏを通る直径線をｙ軸とすると共に原
点ｏを通りｙ軸と垂直な線をｘ軸とするｘ−ｙ直角座標
上に座標（１．０，８．０）の点ｐ1 を設定する。ここ
で、ｙ軸は原点ｏよりも上記φ１２０ｍｍの円の中心側
が＋であり、ｘ軸は原点ｏよりも羽根車Ａの回転の向き
（図２の矢印方向）の側がプラスである。また座標の括
弧内の数値の単位はｍｍである。With this point o as the origin, the above φ12
A point having coordinates (1.0, 8.0) on an xy rectangular coordinate system in which a y-axis is a diameter line passing through the origin o of a 0 mm circle, and a x-axis is a line passing through the origin o and perpendicular to the y-axis. setting the p 1. Here, the y-axis is + on the center side of the circle of 120 mm above the origin o, and the x-axis is positive on the side of the rotation direction of the impeller A (the direction of the arrow in FIG. 2) from the origin o. The unit of the numerical value in parentheses of the coordinates is mm.
【００１０】この座標（１．０，８．０）の点ｐ1 を中
心として描かれる半径８．５ｍｍの円のうち、羽根車Ａ
の回転の向きと反対側の部分の円弧と上記φ１２０ｍｍ
の円周との交点をｘ−ｙ直角座標上の点ａとし、またこ
の半径８．５ｍｍの円弧と上記φ１２０ｍｍの円と同心
のφ９４ｍｍの円周との交点をｘ−ｙ直角座標上の点ｂ
とする。Of the circle having a radius of 8.5 mm drawn around the point p 1 at the coordinates (1.0, 8.0), the impeller A
Arc of the part opposite to the direction of rotation of the
Is the point a on the xy rectangular coordinates, and the intersection of the 8.5 mm radius arc and the φ120 mm circle concentric with the φ94 mm circle is a point on the xy rectangular coordinates. b
And
【００１１】さらに、点ｏを原点とする座標（０．０，
８．０）の点ｐ2 をｘ−ｙ直角座標上に設定し、このｐ
2 を中心として描かれる半径８．５ｍｍの円のうち、羽
根車Ａの回転の向きと反対側の部分の円弧と上記φ９４
ｍｍの円周との交点をｘ−ｙ直角座標上の点ｃとし、こ
の半径８．５ｍｍの円弧と上記φ１２０ｍｍの円周との
交点をｘ−ｙ直角座標上の点ｄとする。Further, coordinates (0.0,
8.0) of the point p 2 set on the x-y rectangular coordinates, this p
2 of the circle having a radius of 8.5 mm drawn on the opposite side of the rotation direction of the impeller A and the φ94
The point of intersection with the circumference of mm is the point c on the xy rectangular coordinates, and the point of intersection of the 8.5 mm radius arc and the circle of φ120 mm is the point d on the xy rectangular coordinates.
【００１２】そして図１（ａ）にあって、点ａと点ｂの
間をこの両点を通る上記の半径８．５ｍｍの円弧で接続
し、点ｂと点ｃの間を点ｂと点ｃを通り中心が上記のφ
９４ｍｍの円周より外側に位置する半径０．５ｍｍの円
のうち上記φ９４ｍｍの円周より内側の部分の円弧で接
続し、点ｃと点ｄの間をこの両点を通る上記半径８．５
ｍｍの円弧で接続し、点ｄと点ａの間を上記φ１２０ｍ
ｍの円の円弧で接続して、羽根板１の先端部の断面の外
形線を形成するようにしてある。In FIG. 1A, the point a and the point b are connected by the above-mentioned 8.5 mm radius arc passing through both points, and the point b and the point c are connected between the points b and c. c and the center is the above φ
Of the circles having a radius of 0.5 mm located outside the circumference of 94 mm, they are connected by an arc of the portion inside the circumference of φ94 mm, and the radius 8.5 passing between points c and d passes through both points.
mm, and the distance between the point d and the point a is
m are connected by an arc of a circle m to form an outline of the cross section of the tip end portion of the blade 1.
【００１３】羽根板１の先端部の断面の外形線は上記の
円弧が連続する曲線で形成されることが最も好ましい
が、本発明はこの円弧が連続する曲線で羽根板１の先端
部の断面の外形線を形成することにのみ制限されるもの
ではなく、この円弧が連続する曲線を基準にして所定の
範囲に収まる曲線で羽根板１の先端部の断面の外形線を
形成するようにすればよい。すなわち、これらの点ａ，
点ｂ，点ｃ，点ｄを接続する各円弧上にｘ−ｙ直角座標
の座標をとったときに、座標の数値の±５％の範囲を設
定し、この範囲内に収まる曲線で羽根板１の先端部の断
面の外形線を形成するようにすればよい。It is most preferable that the outer shape of the cross section of the tip of the blade 1 is formed by a curve in which the above-mentioned arc is continuous. However, the present invention is not limited to the formation of the outer shape of the slat 1 but is formed so that the outer shape of the cross section of the tip end portion of the slat 1 is formed by a curve whose arc falls within a predetermined range based on a continuous curve. I just need. That is, these points a,
When the coordinates of the xy rectangular coordinates are taken on each of the arcs connecting the points b, c, and d, a range of ± 5% of the numerical value of the coordinates is set. It is sufficient to form an outer shape line of the cross section of the front end portion of the first.
【００１４】また図１（ｂ）は各羽根板１の主板２に連
結される基端部の断面形状を示すものであり、図１
（ｂ）においてｏはφ１２０ｍｍの円周上の一点であ
る。４８枚の羽根板１を有するタイプでは、３６０°／
４８＝７．５°の角度の等間隔でφ１２０ｍｍの円周上
の４８箇所に点ｏが設定される。ここで、上記の図１
（ａ）のφ１２０ｍｍの円の中心と図１（ｂ）のφ１２
０ｍｍの円の中心、図１（ａ）のφ１２０ｍｍの円周上
の点ｏと図１（ｂ）のφ１２０ｍｍの円周上の点ｏは、
それぞれ羽根車Ａの回転軸方向で一致するものである。FIG. 1B shows a cross-sectional shape of a base end of each blade 1 connected to the main plate 2.
In (b), o is one point on the circumference of φ120 mm. In the type having 48 blades 1, 360 ° /
Points o are set at 48 positions on the circumference of φ120 mm at equal intervals of 48 = 7.5 °. Here, FIG.
The center of the circle having a diameter of 120 mm in FIG.
The center o of the 0 mm circle, the point o on the circumference of φ120 mm in FIG. 1A and the point o on the circumference of φ120 mm in FIG.
These coincide with each other in the rotation axis direction of the impeller A.
【００１５】そしてこの点ｏを原点とし、上記のφ１２
０ｍｍの円の原点ｏを通る直径線をｙ軸とすると共に原
点ｏを通りｙ軸と垂直な線をｘ軸とするｘ−ｙ直角座標
上に座標（１．０，８．０）の点ｐ1 を設定する。ここ
で、ｙ軸は原点ｏよりも上記φ１２０ｍｍの円の中心側
が＋であり、ｘ軸は原点ｏよりも羽根車Ａの回転の向き
の側がプラスである。図１（ａ）のｘ−ｙ直角座標と図
１（ｂ）のｘ−ｙ直角座標は平行であり、また座標の括
弧内の数値の単位はｍｍである。With this point o as the origin, the above φ12
A point having coordinates (1.0, 8.0) on an xy rectangular coordinate system in which a y-axis is a diameter line passing through the origin o of a 0 mm circle, and a x-axis is a line passing through the origin o and perpendicular to the y-axis. setting the p 1. Here, the y axis is + on the center side of the circle of 120 mm above the origin o, and the x axis is positive on the side of the rotation of the impeller A than the origin o. The xy rectangular coordinates in FIG. 1A and the xy rectangular coordinates in FIG. 1B are parallel, and the unit of the numerical value in parentheses of the coordinate is mm.
【００１６】この座標（１．０，８．０）の点ｐ1 を中
心として描かれる半径８ｍｍの円のうち、羽根車Ａの回
転の向きと反対側の部分の円弧と上記φ１２０ｍｍの円
周との交点をｘ−ｙ直角座標上の点ａ′とし、またこの
半径８ｍｍの円弧と上記φ１２０ｍｍの円と同心のφ９
４ｍｍの円周との交点をｘ−ｙ直角座標上の点ｂ′とす
る。Of the circle having a radius of 8 mm drawn around the point p 1 at the coordinates (1.0, 8.0), the arc of the part opposite to the direction of rotation of the impeller A and the circumference of φ120 mm described above. Is defined as a point a 'on the xy rectangular coordinates, and an arc having a radius of 8 mm and φ9 concentric with the circle having a diameter of 120 mm.
The intersection with the circumference of 4 mm is defined as a point b 'on the xy rectangular coordinates.
【００１７】さらに、点ｏを原点とする座標（０．０，
８．０）の点ｐ2 をｘ−ｙ直角座標上に設定し、このｐ
2 を中心として描かれる半径９ｍｍの円のうち、羽根車
Ａの回転の向きと反対側の部分の円弧と上記φ９４ｍｍ
の円周との交点をｘ−ｙ直角座標上の点ｃ′とし、この
半径９ｍｍの円弧と上記φ１２０ｍｍの円周との交点を
ｘ−ｙ直角座標上の点ｄ′とする。Further, coordinates (0.0,
8.0) of the point p 2 set on the x-y rectangular coordinates, this p
2 is a circle having a radius of 9 mm and a circle on the opposite side of the rotation direction of the impeller A and the above-mentioned φ94 mm
Is defined as a point c 'on the xy rectangular coordinates, and an intersection between the arc having a radius of 9 mm and the circumference having a diameter of 120 mm is defined as a point d' on the xy rectangular coordinates.
【００１８】そして図１（ｂ）にあって、点ａ′と点
ｂ′の間を上記の半径８ｍｍの円弧で接続し、点ｂ′と
点ｃ′の間を点ｂ′と点ｃ′を通り中心が上記のφ９４
ｍｍの円周より外側に位置する半径１ｍｍの円のうち上
記φ９４ｍｍの円周より内側の部分の円弧で接続し、点
ｃ′と点ｄ′の間を上記半径９ｍｍの円弧で接続し、点
ｄ′と点ａ′の間を上記φ１２０ｍｍの円の円弧で接続
して、羽根板１の基端部の断面の外形線を形成するよう
にしてある。In FIG. 1B, the point a 'and the point b' are connected by the above-mentioned arc having a radius of 8 mm, and the point b 'and the point c' are connected between the point b 'and the point c'. And the center is the above φ94
of the circle having a radius of 1 mm located outside the circumference of mm and connecting the portion inside the circumference of the circle having a diameter of 94 mm, and connecting the points c ′ and d ′ with the arc having the radius of 9 mm. The d 'and the point a' are connected by an arc of the circle having a diameter of 120 mm so as to form an outline of a cross section of the base end of the blade 1.
【００１９】羽根板１の基端部の断面の外形線は上記の
円弧が連続する曲線で形成されることが最も好ましい
が、本発明はこの円弧が連続する曲線で羽根板１の基端
部の断面の外形線を形成することにのみ制限されるもの
ではなく、この円弧が連続する曲線を基準にして所定の
範囲に収まる曲線で羽根板１の基端部の断面の外形線を
形成するようにすればよい。すなわち、これらの点
ａ′，点ｂ′，点ｃ′，点ｄ′を接続する各円弧上にｘ
−ｙ直角座標の座標をとったときに、座標の数値の±５
％の範囲を設定し、この範囲内に収まる曲線で羽根板１
の基端部の断面の外形線を形成するようにすればよい。It is most preferable that the outer shape of the cross section of the base end portion of the slat 1 is formed by a curve in which the above-mentioned circular arc is continuous. The outline of the cross section of the base end portion of the slat 1 is formed by a curve that falls within a predetermined range with reference to a continuous curve of this circular arc. What should I do? That is, x is placed on each arc connecting these points a ', b', c ', and d'.
−y When taking the coordinates of rectangular coordinates, ± 5 of the numerical value of the coordinates
% Range, and the blade 1
The outline of the cross section of the base end portion may be formed.
【００２０】上記のようにして各羽根板１の長手方向の
一端と他端、すなわち先端と基端の外形線が設定される
ものであり、先端と基端の間の各部分の外形線は、先端
の外形線と基端の外形線との間で連続的に変化する外形
線に形成されるものである。従って、羽根板１の先端と
基端の外形線が設定されると自動的に先端と基端の間の
各部分の外形線も設定されるものである。尚、本発明
は、これらの外形線と相似形の外径線を有する羽根板１
にも適用されるものである。As described above, one end and the other end in the longitudinal direction of each blade plate 1, that is, the outlines of the tip and the base are set, and the outline of each part between the tip and the base is , Which are continuously changed between the outer shape line at the distal end and the outer shape line at the base end. Therefore, when the contours of the distal end and the proximal end of the blade 1 are set, the contours of the respective portions between the distal end and the proximal end are automatically set. The present invention relates to a slat 1 having an outer diameter line similar to these outer lines.
Also applies to
【００２１】また、羽根板１の先端と基端の外形線を図
１（ａ）（ｂ）のように設定すると、各羽根板１の回転
方向に対する取り付け角度、すなわち原点ｏを通るφ１
２０ｍｍの直径線であるｙ軸と、原点ｏと点ｂを結ぶ線
とのなす角度θ1 は２３．１°になり、ｙ軸と、原点ｏ
と点ｃを結ぶ線とのなす角度θ2 は２６．７°になる。
羽根板１の取り付け角度はこの角度が最も好ましいが、
本発明ではこの取り付け角度をこの角度に設定すること
にのみ制限されるものではなく、図１（ａ）における原
点ｏと点ｂを結ぶ線とｙ軸との間の角度θ1 と、原点ｏ
と点ｃを結ぶ線とｙ軸との間の角度θ2 をそれぞれ基準
にして、この各角度の±２°の範囲で各羽根板１の取り
付け角度を設定するようにすればよい。When the outlines of the tip and the base of the blade 1 are set as shown in FIGS. 1 (a) and 1 (b), the mounting angle of each blade 1 with respect to the rotation direction, ie, φ1 passing through the origin o,
The angle θ 1 between the y-axis, which is a diameter line of 20 mm, and the line connecting the origin o and the point b is 23.1 °, and the y-axis and the origin o
The angle θ 2 formed by the line connecting the point c and the point c is 26.7 °.
This angle is most preferable as the mounting angle of the slat 1,
The present invention is not limited to setting this mounting angle to this angle, but includes an angle θ 1 between the line connecting the origin o and the point b and the y axis in FIG.
The angle of attachment of each blade 1 may be set within a range of ± 2 ° of each angle with reference to the angle θ 2 between the line connecting the point c and the point c and the y-axis.
【００２２】上記のようにして、４８枚の羽根板１を主
板２と側板３の間に設けることによって、本発明に係る
シロッコファンの羽根車Ａを作製することができるもの
であり、ＡＢＳ樹脂などの合成樹脂の一体成形品として
形成することができる。そしてこのような羽根車Ａを成
形する金型は、その成形用キャビティが、羽根板１を成
形する羽根板成形部と、主板２を成形する主板成形部
と、側板３を成形する側板成形部とで形成されるが、羽
根板成形部は、羽根板１の一方の端部と他方の端部の外
形線及び両端部間の部分の外形線が上記の曲線で成形さ
れると共に羽根板１の取り付け角度が上記の角度に成形
されるように、その内面形状が形成されているものであ
る。キャビティの内面形状は、成形品の成形収縮、反
り、変形、抜き勾配等を考慮して設計されるのはいうま
でもない。By providing 48 blade plates 1 between the main plate 2 and the side plate 3 as described above, the impeller A of the sirocco fan according to the present invention can be manufactured. It can be formed as an integral molded product of a synthetic resin such as In the mold for molding such an impeller A, the molding cavities include a blade plate forming section for forming the blade plate 1, a main plate forming section for forming the main plate 2, and a side plate forming section for forming the side plate 3. The blade plate forming portion is configured such that the outline of one end and the other end of the blade 1 and the outline of a portion between both ends are formed by the above-mentioned curve, and the blade 1 The inner shape is formed so that the mounting angle is formed at the above angle. It goes without saying that the inner surface shape of the cavity is designed in consideration of molding shrinkage, warpage, deformation, draft, etc. of the molded product.
【００２３】[0023]
【実施例】以下本発明を実施例によって具体的に説明す
る。 （実施例１）φ１２５ｍｍの主板２と外径１２５ｍｍの
側板３の間に４８枚の長さＨ＝５０ｍｍの羽根板１を一
体に設けたＡＢＳ樹脂製の羽根車Ａを作製するにあたっ
て、各羽根板１の先端部（側板３に接合される端部）の
断面の外形線と、基端部（主板２に接合される端部）の
断面の外形線を次のように形成した。The present invention will be described below in detail with reference to examples. (Example 1) When manufacturing an impeller A made of ABS resin in which 48 blade plates 1 having a length H = 50 mm were integrally provided between a main plate 2 having a diameter of 125 mm and a side plate 3 having an outer diameter of 125 mm, each blade was manufactured. The outline of the cross section of the front end (the end joined to the side plate 3) of the plate 1 and the outline of the cross section of the base end (the end joined to the main plate 2) were formed as follows.
【００２４】すなわち、羽根板１の先端部の断面の外形
線は図１（ａ）に示すように、φ１２０ｍｍの円周上の
一点を原点ｏとし原点ｏを通るこの円の直径線をｙ軸と
するｘ−ｙ直角座標上に設定した座標（１．０，８．
０）の点ｐ1 を中心として描かれる半径８．５ｍｍの円
弧と上記φ１２０ｍｍの円周との交点をａ、この半径
８．５ｍｍの円弧と上記φ１２０ｍｍの円と同心のφ９
４ｍｍの円周との交点をｂ、点ｏを原点とする座標
（０．０，８．０）の点ｐ2 を中心として描かれる半径
８．５ｍｍの円弧と上記φ９４ｍｍの円周との交点を
ｃ、この半径８．５ｍｍの円弧と上記φ１２０ｍｍの円
周との交点をｄとし、点ａと点ｂの間をこの両点を通る
上記半径８．５ｍｍの円弧で、点ｂと点ｃの間を点ｂと
点ｃを通り中心がφ９４ｍｍの円周より外側に位置する
半径０．５ｍｍの円のうち上記φ９４ｍｍの円周より内
側の円弧で、点ｃと点ｄの間をこの両点を通る上記半径
８．５ｍｍの円弧で、点ｄと点ａの間を上記φ１２０ｍ
ｍの円の円弧でそれぞれ結ぶ曲線で形成した。That is, as shown in FIG. 1 (a), the outer shape of the cross section of the tip of the blade 1 is defined as a point on the circumference of φ120 mm as the origin o, and the diameter line of this circle passing through the origin o is defined as the y-axis. Coordinates set on the xy rectangular coordinates (1.0, 8..
A) is the intersection of the 8.5 mm radius arc drawn around the point p 1 of 0) and the φ120 mm circumference, and φ9 is concentric with the 8.5 mm radius arc and the φ120 mm circle.
The intersection between the circle of 4 mm and the circle of 8.5 mm in radius drawn around the point p 2 of the coordinates (0.0, 8.0) with the origin at the point o and b is the intersection with the circle of φ94 mm. Is c, the intersection of the 8.5 mm radius arc with the φ120 mm circumference is d, and the 8.5 mm radius arc passing between points a and b passes through both points. Is a circle having a radius of 0.5 mm, which passes through the points b and c and whose center is located outside the circumference of φ94 mm, and is an arc inside the circumference of φ94 mm. An arc having a radius of 8.5 mm passing through a point, and having a diameter of 120 m between a point d and a point.
m were formed by curves connected by arcs of a circle.
【００２５】また羽根板１の基端部の断面の外形線は図
１（ｂ）に示すように、上記点ｏを原点とし原点ｏを通
るφ１２０ｍｍの円の直径線をｙ軸とするｘ−ｙ直角座
標に設定した座標（１．０，８．０）の点ｐ1 を中心と
して描かれる半径８ｍｍの円弧と上記φ１２０ｍｍの円
周との交点をａ′、この半径８ｍｍの円弧と上記φ９４
ｍｍの円周との交点をｂ′、点ｏを原点とする座標
（０．０，８．０）の点ｐ 2 を中心として描かれる半径
９ｍｍの円弧と上記φ９４ｍｍの円周との交点をｃ′、
この半径９ｍｍの円弧と上記φ１２０ｍｍの円周との交
点をｄ′とし、点ａ′と点ｂ′の間を上記半径８ｍｍの
円弧で、点ｂ′と点ｃ′の間を点ｂ′と点ｃ′を通り中
心がφ９４ｍｍの円周より外側に位置する半径１ｍｍの
円のうち上記φ９４ｍｍの円周より内側の円弧で、点
ｃ′と点ｄ′の間を上記半径９ｍｍの円弧で、点ｄ′と
点ａ′の間を上記φ１２０ｍｍの円の円弧でそれぞれ結
ぶ曲線で形成した。The outline of the cross section of the base end of the blade 1 is shown in FIG.
As shown in FIG. 1 (b), the point o is set as the origin, and
Xy right angle seat with φ120mm circle diameter line as y axis
Point p at coordinates (1.0, 8.0) set for the target1Centered around
8mm radius arc and the above φ120mm circle drawn
The intersection with the circumference is a ', the arc having a radius of 8 mm and the above-mentioned φ94
coordinates with the point of intersection with the circumference of mm in b 'and the point o as the origin
The point p at (0.0, 8.0) TwoRadius drawn around
The intersection between the 9 mm arc and the φ94 mm circumference is c ′,
Intersection of this 9 mm radius arc and the φ 120 mm circumference
The point is d ', and the distance between the point a' and the point b 'is
An arc passes through the point b 'and the point c' between the point b 'and the point c'
With a radius of 1 mm, whose center is located outside the circumference of φ94 mm
The arc inside the circle of φ94mm above the circle
An arc having a radius of 9 mm between the point c 'and the point d'
Connect the points a 'with arcs of the circle of φ120mm.
It was formed as a curve.
【００２６】（実施例２）各羽根板１の先端部の断面の
外形線を次のように形成する他は、実施例１と同様にし
て、４８枚羽根の羽根車Ａを作製した。尚、このもの
は、実施例１のものに対して、羽根板１の先端部の断面
の外形線を＋５％変形させ、取り付け角度を＋２°変更
させたものに相当する。(Example 2) An impeller A of 48 blades was produced in the same manner as in Example 1 except that the outer shape of the cross section of the tip of each blade plate 1 was formed as follows. In addition, this corresponds to the one in which the outer shape of the cross section of the tip end portion of the slat 1 is deformed by + 5% and the mounting angle is changed by + 2 ° with respect to that of the first embodiment.
【００２７】すなわち、羽根板１の先端部の断面の外形
線は図１（ａ）に準じて示すように、φ１２０ｍｍの円
周上の一点を原点ｏとし原点ｏを通るこの円の直径線を
ｙ軸とするｘ−ｙ直角座標上に設定した座標（１．５，
９．６）の点ｐ1 を中心として描かれる半径１０ｍｍの
円弧と上記φ１２０ｍｍの円周との交点をａ、この半径
１０ｍｍの円弧と上記φ１２０ｍｍの円と同心のφ９４
ｍｍの円周との交点をｂ、点ｏを原点とする座標（１．
０，９．６）の点ｐ2 を中心として描かれる半径１０ｍ
ｍの円弧と上記φ９４ｍｍの円周との交点をｃ、この半
径１０ｍｍの円弧と上記φ１２０ｍｍの円周との交点を
ｄとし、点ａと点ｂの間をこの両点を通る上記半径１０
ｍｍの円弧で、点ｂと点ｃの間を点ｂと点ｃを通り中心
がφ９４ｍｍの円周より外側に位置する半径０．５ｍｍ
の円のうち上記φ９４ｍｍの円周より内側の円弧で、点
ｃと点ｄの間をこの両点を通る上記半径１０ｍｍの円弧
で、点ｄと点ａの間を上記φ１２０ｍｍの円の円弧でそ
れぞれ結ぶ曲線で形成した。That is, as shown in FIG. 1 (a), the outer shape of the cross section of the tip of the blade plate 1 is defined as a point on the circumference of φ120 mm having an origin o, and the diameter line of this circle passing through the origin o. Coordinates set on xy rectangular coordinates (1.5,
The point of intersection of the circular arc with a radius of 10 mm drawn around the point p 1 in 9.6) and the circumference of φ120 mm is a, and φ94 concentric with the circular arc of 10 mm radius and the circle of φ120 mm.
The coordinates (1.
Radius 10m drawn around a p 2 points 0,9.6)
The intersection between the arc of m and the circumference of φ94 mm is c, the intersection of the arc of 10 mm in radius and the circumference of φ120 mm is d, and the radius 10 between the points a and b passes through these two points.
mm arc with a radius of 0.5 mm located between the point b and the point c, passing through the point b and the point c, and having a center located outside the circumference of φ94 mm.
Is an arc inside the circumference of the φ94 mm, an arc of the radius 10 mm passing between the points c and d, and an arc of the circle of the φ120 mm between the points d and a. They were formed by connecting curves.
【００２８】（実施例３）各羽根板１の先端部の断面の
外形線を次のように形成する他は、実施例１と同様にし
て、４８枚羽根の羽根車Ａを作製した。尚、このもの
は、実施例１のものに対して、羽根板１の先端部の断面
の外形線を−５％変形させ、取り付け角度を−２°変更
させたものに相当する。(Example 3) An impeller A having 48 blades was manufactured in the same manner as in Example 1 except that the outer shape of the cross section of the tip portion of each blade 1 was formed as follows. In addition, this corresponds to the one in which the outer shape of the cross section of the tip end portion of the slat 1 is deformed by -5% and the mounting angle is changed by -2 ° with respect to that of the first embodiment.
【００２９】すなわち、羽根板１の先端部の断面の外形
線は図１（ａ）に準じて示すように、φ１２０ｍｍの円
周上の一点を原点ｏとし原点ｏを通るこの円の直径線を
ｙ軸とするｘ−ｙ直角座標上に設定した座標（０．５，
６．４）の点ｐ1 を中心として描かれる半径７．５ｍｍ
の円弧と上記φ１２０ｍｍの円周との交点をａ、この半
径７．５ｍｍの円弧と上記φ１２０ｍｍの円と同心のφ
９４ｍｍの円周との交点をｂ、点ｏを原点とする座標
（−０．５，６．４）の点ｐ2 を中心として描かれる半
径７．５ｍｍの円弧と上記φ９４ｍｍの円周との交点を
ｃ、この半径７．５ｍｍの円弧と上記φ１２０ｍｍの円
周との交点をｄとし、点ａと点ｂの間を両点を通る上記
半径７．５ｍｍの円弧で、点ｂと点ｃの間を点ｂと点ｃ
を通り中心がφ９４ｍｍの円周より外側に位置する半径
０．５ｍｍの円のうち上記φ９４ｍｍの円周より内側の
円弧で、点ｃと点ｄの間を両点を通る上記半径７．５ｍ
ｍの円弧で、点ｄと点ａの間を上記φ１２０ｍｍの円の
円弧でそれぞれ結ぶ曲線で形成した。That is, as shown in FIG. 1 (a), the outer shape of the cross section of the tip of the blade plate 1 is defined as a point on the circumference of φ120 mm defined as the origin o, and the diameter line of this circle passing through the origin o. Coordinates set on xy rectangular coordinates (0.5,
6.4) 7.5 mm radius drawn about point p 1
A is the intersection of the circular arc of φ with the circle of φ120 mm, and φ is concentric with the arc of radius 7.5 mm and the circle of φ120 mm.
The intersection of b with the 94 mm circumference and the arc of 7.5 mm radius drawn around the point p 2 of the coordinates (-0.5, 6.4) with the point o as the origin and the circumference of φ94 mm described above. The intersection point is c, the intersection point between the arc of 7.5 mm radius and the circumference of φ 120 mm is d, and the arc of 7.5 mm radius passing between point a and point b passes through both points. Between point b and point c
Is a circle having a radius of 0.5 mm, whose center is located outside the circumference of φ94 mm, and which is inside the circumference of φ94 mm and passes through both points between point c and point d.
The curve formed by connecting the point d and the point a with each other by the arc of the circle having a diameter of 120 mm.
【００３０】（比較例１）各羽根板１の先端部の断面の
外形線を次のように形成する他は、実施例１と同様にし
て、５０枚羽根の羽根車Ａを作製した。尚、このもの
は、実施例１のものに対して、羽根板１の先端部の断面
の外形線を＋１０％変形させ、取り付け角度を＋４°変
更させたものに相当する。(Comparative Example 1) An impeller A having 50 blades was manufactured in the same manner as in Example 1 except that the outer shape of the cross section of the tip of each blade plate 1 was formed as follows. In addition, this is equivalent to the one in which the outer shape of the cross section of the tip end portion of the blade 1 is deformed by + 10% and the mounting angle is changed by + 4 ° with respect to that of the first embodiment.
【００３１】すなわち、羽根板１の先端部の断面の外形
線は図１（ａ）に準じて示すように、φ１２０ｍｍの円
周上の一点を原点ｏとし原点ｏを通るこの円の直径線を
ｙ軸とするｘ−ｙ直角座標上に設定した座標（２．５，
１１．２）の点ｐ1 を中心として描かれる半径１２ｍｍ
の円弧と上記φ１２０ｍｍの円周との交点をａ、この半
径１２ｍｍの円弧と上記φ１２０ｍｍの円と同心のφ９
４ｍｍの円周との交点をｂ、点ｏを原点とする座標
（１．５，１１．２）の点ｐ2 を中心として描かれる半
径１２ｍｍの円弧と上記φ９４ｍｍの円周との交点を
ｃ、この半径１２ｍｍの円弧と上記φ１２０ｍｍの円周
との交点をｄとし、点ａと点ｂの間をこの両点を通る上
記半径１２ｍｍの円弧で、点ｂと点ｃの間を点ｂと点ｃ
を通り中心がφ９４ｍｍの円周より外側に位置する半径
０．５ｍｍの円のうち上記φ９４ｍｍの円周より内側の
円弧で、点ｃと点ｄの間をこの両点を通る上記半径１２
ｍｍの円弧で、点ｄと点ａの間を上記φ１２０ｍｍの円
の円弧でそれぞれ結ぶ曲線で形成した。That is, as shown in FIG. 1 (a), the outer shape of the cross section of the tip of the blade plate 1 is defined as a point on the circumference of φ120 mm having an origin o, and the diameter line of this circle passing through the origin o. Coordinates set on xy rectangular coordinates (2.5,
11.2) Radius 12 mm drawn around point p 1
A is the intersection of the arc with the circle of φ120 mm and φ9 concentric with the arc of 12 mm in radius and the circle of φ120 mm.
The intersection point between the circle of 4 mm and the circle of 12 mm in radius drawn around the point p 2 of the coordinates (1.5, 11.2) with the point o as the origin and the circle of φ94 mm is c. The intersection of the 12 mm radius arc and the φ 120 mm circumference is d, and the 12 mm radius arc passes between point a and point b and passes through both points. Point c
Of a circle having a radius of 0.5 mm, whose center is located outside the circumference of φ94 mm, and which passes through the two points between point c and point d in an arc inside the circumference of φ94 mm.
The curve was formed by connecting the points d and a with each other by the circular arc of φ120 mm.
【００３２】（比較例２）各羽根板１の先端部の断面の
外形線を次のように形成する他は、実施例１と同様にし
て、５０枚羽根の羽根車Ａを作製した。尚、このもの
は、実施例１のものに対して、羽根板１の先端部の断面
の外形線を−１０％変形させ、取り付け角度を−４°変
更させたものに相当する。Comparative Example 2 An impeller A having 50 blades was manufactured in the same manner as in Example 1 except that the outer shape of the cross section of the tip of each blade plate 1 was formed as follows. Note that this is equivalent to the one in which the outer shape of the cross section of the tip end portion of the slat 1 is changed by -10% and the mounting angle is changed by -4 ° with respect to that of the first embodiment.
【００３３】すなわち、羽根板１の先端部の断面の外形
線は図１（ａ）に準じて示すように、φ１２０ｍｍの円
周上の一点を原点ｏとし原点ｏを通るこの円の直径線を
ｙ軸とするｘ−ｙ直角座標上に設定した座標（−０．
５，４．８）の点ｐ1 を中心として描かれる半径７．５
ｍｍの円弧と上記φ１２０ｍｍの円周との交点をａ、こ
の半径７．５ｍｍの円弧と上記φ１２０ｍｍの円と同心
のφ９４ｍｍの円周との交点をｂ、点ｏを原点とする座
標（−１．５，４．８）の点ｐ2 を中心として描かれる
半径７．５ｍｍの円弧と上記φ９４ｍｍの円周との交点
をｃ、この半径７．５ｍｍの円弧と上記φ１２０ｍｍの
円周との交点をｄとし、点ａと点ｂの間をこの両点を通
る上記半径７．５ｍｍの円弧で、点ｂと点ｃの間を点ｂ
と点ｃを通り中心がφ９４ｍｍの円周より外側に位置す
る半径０．５ｍｍの円のうち上記φ９４ｍｍの円周より
内側の円弧で、点ｃと点ｄの間をこの両点を通る上記半
径７．５ｍｍの円弧で、点ｄと点ａの間を上記φ１２０
ｍｍの円の円弧でそれぞれ結ぶ曲線で形成した。That is, as shown in FIG. 1 (a), the outer line of the cross section of the tip of the blade plate 1 is defined as a point on the circumference of φ120 mm having an origin o, and the diameter line of this circle passing through the origin o. Coordinates set on xy rectangular coordinates (−0.
A radius 7.5 drawn around the point p 1 of ( 5,4.8)
a is the intersection of the arc of mm with the circumference of φ120 mm, b is the intersection of the arc of φ7.5 mm with the circle of φ94 mm concentric with the circle of φ120 mm, and coordinates (−1) are the point o as the origin. the intersection of the arc and the circumference of the φ94mm radius 7.5mm drawn around a p 2 points .5,4.8) c, the intersection between the arc and the circumference of the φ120mm the radius 7.5mm Is d, a point b between the point b and the point c is an arc having the radius of 7.5 mm passing between the points a and b,
And a circle having a radius of 0.5 mm whose center is located outside the circumference of φ94 mm passing through the point c and an arc inside the circumference of φ94 mm, and passing between the points c and d through the two points. An arc of 7.5 mm, between the point d and the point a,
It was formed by curves connected by arcs of a circle of mm.
【００３４】上記のように実施例１，２，３及び比較例
１，２で作製した羽根車Ａからシロッコファンを作製
し、このシロッコファンを送風機に取り付けて、ＪＩＳ
規格Ｂ８３３０に基づき、最大風量、最大静圧、動作点
風量、動作点静圧を測定した。ここで、最大風量はファ
ン静圧０ｍｍＨ2 Ｏ時（無負荷時）の風量、最大静圧は
ファン風量が０ｍ3 ／ｍｉｎ時の静圧、動作点風量は動
作点静圧時の風量、動作点静圧はファンが実際に使用さ
れる環境下での静圧である。As described above, a sirocco fan was manufactured from the impellers A manufactured in Examples 1, 2 and 3 and Comparative Examples 1 and 2, and the sirocco fan was attached to a blower to meet JIS.
Based on the standard B8330, the maximum air volume, the maximum static pressure, the operating point air volume, and the operating point static pressure were measured. Here, the maximum air volume is the air volume when the fan static pressure is 0 mmH 2 O (no load), the maximum static pressure is the static pressure when the fan air volume is 0 m 3 / min, the operating point air volume is the air volume at the operating point static pressure, the operation Point static pressure is the static pressure under the environment where the fan is actually used.
【００３５】結果を表１に示す。The results are shown in Table 1.
【００３６】[0036]
【表１】 [Table 1]
【００３７】表１にみられるように、実施例１〜３のも
のは、比較例１，２のものよりも最大風量が３．５〜
４．８％、最大静圧が１３．０〜２１．８％、動作点風
量が２．６〜３．４％、動作点静圧が１４．３〜２０．
０％向上していることが確認される。As can be seen from Table 1, Examples 1-3 have a maximum airflow of 3.5-3.5 compared with Comparative Examples 1 and 2.
4.8%, maximum static pressure 13.0-21.8%, operating point airflow 2.6-3.4%, operating point static pressure 14.3-20.
It is confirmed that it is improved by 0%.
【００３８】[0038]
【発明の効果】上記のように本発明に係るシロッコファ
ンの羽根車は、各羽根板の一方の端部の断面の外形線
を、φ１２０ｍｍの円周上の一点を原点ｏとし原点ｏを
通るこの円の直径線をｙ軸とするｘ−ｙ直角座標上に設
定した座標（１．０，８．０）〔座標の数値の単位はｍ
ｍ、以下同じ〕を中心として描かれる半径８．５ｍｍの
円弧と上記φ１２０ｍｍの円周との交点をａ、この半径
８．５ｍｍの円弧と上記φ１２０ｍｍの円と同心のφ９
４ｍｍの円周との交点をｂ、点ｏを原点とする座標
（０．０，８．０）を中心として描かれる半径８．５ｍ
ｍの円弧と上記φ９４ｍｍの円周との交点をｃ、この半
径８．５ｍｍの円弧と上記φ１２０ｍｍの円周との交点
をｄとし、点ａと点ｂの間を両点を通る上記半径８．５
ｍｍの円弧で、点ｂと点ｃの間を点ｂと点ｃを通り中心
が上記φ９４ｍｍの円周より外側に位置する半径０．５
ｍｍの円のうち上記φ９４ｍｍの円周より内側の円弧
で、点ｃと点ｄの間を両点を通る上記半径８．５ｍｍの
円弧で、点ｄと点ａの間を上記φ１２０ｍｍの円の円弧
でそれぞれ形成したときに、これらの各円弧上の各点の
座標数値の±５％の範囲に含まれる曲線で形成し、各羽
根板の他方の端部の断面の外形線を、上記点ｏを原点と
し原点ｏを通るφ１２０ｍｍの円の直径線をｙ軸とする
ｘ−ｙ直角座標上に設定した座標（１．０，８．０）を
中心として描かれる半径８ｍｍの円弧と上記φ１２０ｍ
ｍの円周との交点をａ′、この半径８ｍｍの円弧と上記
φ９４ｍｍの円周との交点をｂ′、点ｏを原点とする座
標（０．０，８．０）を中心として描かれる半径９ｍｍ
の円弧と上記φ９４ｍｍの円周との交点をｃ′、この半
径９ｍｍの円弧と上記φ１２０ｍｍの円周との交点を
ｄ′とし、点ａ′と点ｂ′の間を上記半径８ｍｍの円弧
で、点ｂ′と点ｃ′の間を点ｂ′と点ｃ′を通り中心が
上記φ９４ｍｍの円周より外側に位置する半径１ｍｍの
円のうち上記φ９４ｍｍの円周より内側の円弧で、点
ｃ′と点ｄ′の間を上記半径９ｍｍの円弧で、点ｄ′と
点ａ′の間を上記φ１２０ｍｍの円の円弧でそれぞれ形
成したときに、これらの各円弧上の各点の座標数値の±
５％の範囲に含まれる曲線で形成し、上記原点ｏと点ｂ
を結ぶ線とｙ軸との間の角度と、上記原点ｏと点ｃを結
ぶ線とｙ軸との間の角度をそれぞれ基準にして、これら
の各角度の±２°の範囲で各羽根板の取り付け角度を設
定して成ることを特徴とするものであり、羽根板をこの
ような形態に形成することによって、送風時の送風量等
を高く得ることができるものである。As described above, in the impeller of the sirocco fan according to the present invention, the outline of the cross section of one end of each blade plate passes through the origin o at a point on the circumference of φ120 mm. Coordinates (1.0, 8.0) set on xy rectangular coordinates with the diameter line of this circle as the y-axis [units of coordinate values are m
m, the same applies hereafter) is defined as a point of intersection between the 8.5 mm radius arc and the φ120 mm circumference, and φ9 concentric with the 8.5 mm radius arc and the φ120 mm circle.
A radius of 8.5 m drawn around the coordinates (0.0, 8.0) with the intersection point with the 4 mm circumference as b and the point o as the origin.
The intersection between the arc of m and the circumference of φ94 mm is c, the intersection of the arc of 8.5 mm in radius and the circumference of φ120 mm is d, and the radius 8 passing between points a and b passes through both points. .5
mm, an arc of 0.5 mm passing between point b and point c, passing through points b and c, and having a center located outside the circumference of φ94 mm.
of the circle having a radius of 8.5 mm passing between point c and point d, and having a radius of 8.5 mm passing between points c and d. When each of the circular arcs is formed, it is formed by a curve included in the range of ± 5% of the coordinate value of each point on each of the circular arcs, and the outline of the cross section of the other end of each blade is defined by the above-mentioned point. An arc having a radius of 8 mm and centered on coordinates (1.0, 8.0) set on xy rectangular coordinates with the origin being o and a diameter line of a φ120 mm circle passing through the origin o as the y axis, and the above φ120m
The intersection point with the circumference of m is a ', the intersection point of this 8 mm radius arc with the circumference of φ94 mm is b', and the coordinates (0.0, 8.0) with the point o as the origin are drawn. 9mm radius
The intersection of the arc with the circle of φ94 mm is c ′, the intersection of the arc with a radius of 9 mm and the circumference of φ120 mm is d ′, and the arc of the radius 8 mm is between point a ′ and point b ′. A circle having a radius of 1 mm passing through the point b 'and the point c' between the point b 'and the point c' and having a center located outside the circumference of the above-mentioned φ94 mm, an arc inside the circumference of the above-mentioned φ94 mm, When a circle between c 'and point d' is formed by the above-mentioned arc having a radius of 9 mm, and a point between point d 'and point a' is formed by an arc of the above-mentioned circle having a diameter of 120 mm, coordinate values of each point on each of these arcs ±
It is formed by a curve included in the range of 5%, and the origin o and the point b
And the angle between the y-axis and the line between the origin o and the point c, and the angle between the y-axis and the angle between the line connecting the The mounting angle is set, and by forming the blade plate in such a form, it is possible to obtain a high amount of air when blowing air.
【００３９】また本発明に係るシロッコファンの羽根車
成形用金型は、一方の端部と他方の端部の外形形状が上
記の曲線で形成されると共に取り付け角度が上記の角度
に設定された羽根板を成形するようにキャビティの内面
形状が形成されて成ることを特徴とするものであり、上
記のような形態の羽根板を有する羽根車を樹脂の一体成
形で形成することができ、アルミニウムなどの金属板を
加工して組み立てる場合のような加工や組み立ての工数
を要することなく、コスト安価に製造することができる
ものである。In the mold for molding an impeller of a sirocco fan according to the present invention, the outer shape of one end and the other end is formed by the above-mentioned curve, and the mounting angle is set to the above-mentioned angle. It is characterized in that the inner surface shape of the cavity is formed so as to mold the impeller, and an impeller having the impeller of the above-described form can be formed by integral molding of resin, and aluminum It can be manufactured at low cost without the need for processing and assembling steps as in the case of processing and assembling a metal plate.
【図１】本発明の実施の形態の一例を示すものであり、
（ａ）は羽根車の先端部の断面の外形線を示す図、
（ｂ）は羽根車の基端部の断面の外形線を示す図であ
る。FIG. 1 shows an example of an embodiment of the present invention,
(A) is a diagram showing an outline of a cross section of the tip of the impeller,
(B) is a figure which shows the external line of the cross section of the base end part of an impeller.
【図２】本発明に係るシロッコファンの羽根車の実施の
形態の一例を示す正面図である。FIG. 2 is a front view showing an example of an embodiment of a sirocco fan impeller according to the present invention.
【図３】本発明に係るシロッコファンの羽根車の実施の
形態の一例を示す斜視図である。FIG. 3 is a perspective view showing an example of an embodiment of an impeller of a sirocco fan according to the present invention.
１ 羽根板 ２ 主板 ３ 側板 DESCRIPTION OF SYMBOLS 1 Blade plate 2 Main plate 3 Side plate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 鈴木 貴英 大阪府門真市大字門真1048番地松下電工株 式会社内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takahide Suzuki 1048 Odakadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd.
Claims (2)
て形成されるシロッコファンの羽根車において、各羽根
板の一方の端部の断面の外形線を、φ１２０ｍｍの円周
上の一点を原点ｏとし原点ｏを通るこの円の直径線をｙ
軸とするｘ−ｙ直角座標上に設定した座標（１．０，
８．０）〔座標の数値の単位はｍｍ、以下同じ〕を中心
として描かれる半径８．５ｍｍの円弧と上記φ１２０ｍ
ｍの円周との交点をａ、この半径８．５ｍｍの円弧と上
記φ１２０ｍｍの円と同心のφ９４ｍｍの円周との交点
をｂ、点ｏを原点とする座標（０．０，８．０）を中心
として描かれる半径８．５ｍｍの円弧と上記φ９４ｍｍ
の円周との交点をｃ、この半径８．５ｍｍの円弧と上記
φ１２０ｍｍの円周との交点をｄとし、点ａと点ｂの間
を両点を通る上記半径８．５ｍｍの円弧で、点ｂと点ｃ
の間を点ｂと点ｃを通り中心が上記φ９４ｍｍの円周よ
り外側に位置する半径０．５ｍｍの円のうち上記φ９４
ｍｍの円周より内側の円弧で、点ｃと点ｄの間を両点を
通る上記半径８．５ｍｍの円弧で、点ｄと点ａの間を上
記φ１２０ｍｍの円の円弧でそれぞれ形成したときに、
これらの各円弧上の各点の座標数値の±５％の範囲に含
まれる曲線で形成し、各羽根板の他方の端部の断面の外
形線を、上記点ｏを原点とし原点ｏを通るφ１２０ｍｍ
の円の直径線をｙ軸とするｘ−ｙ直角座標上に設定した
座標（１．０，８．０）を中心として描かれる半径８ｍ
ｍの円弧と上記φ１２０ｍｍの円周との交点をａ′、こ
の半径８ｍｍの円弧と上記φ９４ｍｍの円周との交点を
ｂ′、点ｏを原点とする座標（０．０，８．０）を中心
として描かれる半径９ｍｍの円弧と上記φ９４ｍｍの円
周との交点をｃ′、この半径９ｍｍの円弧と上記φ１２
０ｍｍの円周との交点をｄ′とし、点ａ′と点ｂ′の間
を上記半径８ｍｍの円弧で、点ｂ′と点ｃ′の間を点
ｂ′と点ｃ′を通り中心が上記φ９４ｍｍの円周より外
側に位置する半径１ｍｍの円のうち上記φ９４ｍｍの円
周より内側の円弧で、点ｃ′と点ｄ′の間を上記半径９
ｍｍの円弧で、点ｄ′と点ａ′の間を上記φ１２０ｍｍ
の円の円弧でそれぞれ形成したときに、これらの各円弧
上の各点の座標数値の±５％の範囲に含まれる曲線で形
成し、上記原点ｏと点ｂを結ぶ線とｙ軸との間の角度
と、上記原点ｏと点ｃを結ぶ線とｙ軸との間の角度をそ
れぞれ基準にして、これらの各角度の±２°の範囲で各
羽根板の取り付け角度を設定して成ることを特徴とする
シロッコファンの羽根車。In a sirocco fan impeller formed by arranging a plurality of impellers on a circumference, an outer line of a cross section of one end of each impeller is drawn on a circumference of φ120 mm. Is the origin o, and the diameter line of this circle passing through the origin o is y
Coordinates set on xy rectangular coordinates (1.0,
8.0) An arc with a radius of 8.5 mm drawn around [the unit of the coordinate value is mm, the same applies hereinafter] and the above φ120 m
The point of intersection with the circle of m is a, the point of intersection of the arc of 8.5 mm radius with the circle of φ94 mm concentric with the circle of φ120 mm is b, and the coordinates with the point o as the origin (0.0, 8.0). ) And an arc with a radius of 8.5 mm and the above φ94 mm
The intersection with the circumference of c is c, the intersection of this 8.5 mm radius arc with the φ 120 mm circumference is d, and the 8.5 mm radius arc passing between point a and point b passes through both points. Point b and point c
Between the circles having a radius of 0.5 mm passing through the point b and the point c and having a center located outside the circumference of the φ94 mm.
When an arc inside the circumference of mm is formed by the above-mentioned 8.5 mm radius arc passing through both points between point c and point d, and between the point d and point a is formed by the above arc of φ120 mm circle. To
A curve included in the range of ± 5% of the coordinate value of each point on each of these arcs is formed, and the outline of the cross section of the other end of each blade passes through the origin o with the point o as the origin. φ120mm
8 m radius drawn about the coordinates (1.0, 8.0) set on xy rectangular coordinates with the diameter line of the circle as the y-axis
The coordinates (0.0, 8.0) where the intersection between the arc of m and the circumference of φ120 mm is a ′, the intersection of the arc of 8 mm in radius with the circumference of φ94 mm is b ′, and the point o is the origin. Is the intersection of the 9 mm radius arc drawn around the circle and the φ94 mm circumference, and the 9 mm radius arc and the φ12
The point of intersection with the circumference of 0 mm is d ', the arc between the point a' and the point b 'is an arc having the above radius of 8 mm, the point between the points b' and c 'passes through the points b' and c 'and the center is Among the circles having a radius of 1 mm located outside the circumference of φ94 mm and having an arc inside the circumference of φ94 mm, the radius 9 between the points c ′ and d ′ is 9 mm.
mm between the points d 'and a'
Are formed by a curve included in the range of ± 5% of the coordinate value of each point on each of these arcs, and the line connecting the origin o and the point b and the y-axis are formed. The mounting angle of each blade is set within a range of ± 2 ° of each of these angles with reference to the angle between them and the angle between the line connecting the origin o and the point c and the y axis. A sirocco fan impeller.
て形成されるシロッコファンの羽根車を合成樹脂により
成形するキャビティを設けて形成される金型であって、
一方の端部と他方の端部の外形形状が請求項１に記載の
曲線で形成されると共に取り付け角度が請求項１に記載
の角度に設定された羽根板を成形するようにキャビティ
の内面形状が形成されて成ることを特徴とするシロッコ
ファンの羽根車成形用金型。2. A mold formed by providing a cavity for molding an impeller of a sirocco fan, which is formed by arranging a plurality of blade plates on a circumference, using a synthetic resin,
The inner shape of the cavity so that the outer shape of the one end and the other end is formed by the curve according to claim 1 and the mounting angle is set to the angle described in claim 1. A mold for molding an impeller of a sirocco fan, characterized by being formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31402597A JP3454118B2 (en) | 1997-11-14 | 1997-11-14 | Sirocco fan impeller and molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31402597A JP3454118B2 (en) | 1997-11-14 | 1997-11-14 | Sirocco fan impeller and molding die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11148494A true JPH11148494A (en) | 1999-06-02 |
| JP3454118B2 JP3454118B2 (en) | 2003-10-06 |
Family
ID=18048312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31402597A Expired - Fee Related JP3454118B2 (en) | 1997-11-14 | 1997-11-14 | Sirocco fan impeller and molding die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3454118B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6468038B1 (en) * | 1999-03-03 | 2002-10-22 | Mitsubishi Denki Kabushiki Kaisha | Fan, method for producing the fan by molding molten metal, and device for producing the fan by molding molten metal |
-
1997
- 1997-11-14 JP JP31402597A patent/JP3454118B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6468038B1 (en) * | 1999-03-03 | 2002-10-22 | Mitsubishi Denki Kabushiki Kaisha | Fan, method for producing the fan by molding molten metal, and device for producing the fan by molding molten metal |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3454118B2 (en) | 2003-10-06 |
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