JP2000205191A - Fan - Google Patents
FanInfo
- Publication number
- JP2000205191A JP2000205191A JP513199A JP513199A JP2000205191A JP 2000205191 A JP2000205191 A JP 2000205191A JP 513199 A JP513199 A JP 513199A JP 513199 A JP513199 A JP 513199A JP 2000205191 A JP2000205191 A JP 2000205191A
- Authority
- JP
- Japan
- Prior art keywords
- fan
- blade
- reference point
- dimensional coordinates
- reference points
- 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.)
- Granted
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、ファンに関す
る。[0001] The present invention relates to a fan.
【０００２】[0002]
【従来の技術】従来、プロペラ式のファンとしては、ハ
ブと、ハブの外周面に放射状に設けられた複数の羽根と
を備えたものがある。このファンの金型を作製する場
合、金型を試作図面から作るのではなく、試作したファ
ンに対して３次元座標の測定を行って、その測定値を用
いてファンの金型を作製している。その理由は、上記試
作したファンが試作図面通りに製作できていない場合
や、変形している場合が多く、試作図面が示すファンの
形状と試作されたファンの形状とがほとんど一致しない
からである。なお、上記３次元座標の測定基準は、試作
されたファンのハブの前面側の中心に設定している。2. Description of the Related Art Conventionally, a propeller type fan includes a hub and a plurality of blades radially provided on an outer peripheral surface of the hub. When making a mold for this fan, instead of making a mold from a prototype drawing, three-dimensional coordinates are measured for the prototype fan, and a mold for the fan is manufactured using the measured values. I have. The reason for this is that the above-mentioned prototype fan is often not manufactured according to the prototype drawing or deformed in many cases, and the fan shape shown in the prototype drawing and the prototype fan shape hardly match. . The measurement reference for the three-dimensional coordinates is set at the center on the front side of the hub of the prototype fan.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記ファン
の３次元座標の測定では、測定基準をハブの前面側の中
心に設定するため、その中心から少しでもずれた所を３
次元座標の測定基準としてしまうと、羽根に対する測定
結果に誤差が生じるという問題がある。また、上記羽根
の翼面が曲面の場合、その羽根の形状を正確に検出する
には、翼面の多くの場所を測定しなければならないた
め、測定工数が増加するという問題がある。However, in the measurement of the three-dimensional coordinates of the fan, since the measurement reference is set at the center on the front side of the hub, a point slightly deviated from the center is set.
If the dimensional coordinates are used as a measurement reference, there is a problem that an error occurs in the measurement result of the blade. Further, when the blade surface of the blade is a curved surface, many positions on the blade surface must be measured in order to accurately detect the shape of the blade, so that there is a problem that the number of measurement steps increases.
【０００４】そこで、この発明の目的は、羽根の形状を
正確に測定できると共に、測定工数を低減できるファン
を提供することにある。An object of the present invention is to provide a fan capable of accurately measuring the shape of a blade and reducing the number of measurement steps.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、請求項１のファンは、ハブと、上記ハブの外周面に
放射状に設けられた複数の羽根とを有するファンにおい
て、上記各羽根の翼面に少なくとも３つの３次元座標測
定用の基準点を夫々設けたことを特徴としている。According to a first aspect of the present invention, there is provided a fan having a hub and a plurality of blades radially provided on an outer peripheral surface of the hub. At least three reference points for three-dimensional coordinate measurement are provided on the wing surface.
【０００６】上記請求項１のファンによれば、上記ハブ
の外周面に放射状に設けられた複数の羽根の翼面に少な
くとも３つの３次元座標測定用の基準点を夫々設け、例
えば羽根の翼面のハブ近傍、羽根の翼面の外縁近傍かつ
回転方向の前方側および羽根の翼面の外縁近傍かつ回転
方向の後方側の３つの位置に基準点を夫々設け、３次元
座標を測定する装置を用いて、測定プローブの先端を各
羽根の基準点に合わせて、各基準点の３次元座標を夫々
測定する。そうすると、各羽根の翼面毎に、３つの基準
点の３次元座標に基づいて各基準点を頂点とする三角形
の平面が夫々定まる。そして、各羽根で定まった上記各
基準点を頂点とする三角形の平面と予め定っているファ
ンの回転軸とに基づいて、ファンの回転軸およびその回
転軸に直交する平面に対する各羽根の傾き具合(所謂、
羽根の倒れ込みと羽根の取り付け角度)を検出すること
が可能となる。したがって、上記各羽根に３〜１０個程
度の３次元座標測定用の基準点を夫々設けることによっ
て、羽根の形状を正確に測定できると共に、測定工数を
低減できる。According to the fan of the first aspect, at least three reference points for three-dimensional coordinate measurement are provided on the wing surfaces of the plurality of blades radially provided on the outer peripheral surface of the hub. A device for measuring three-dimensional coordinates by providing reference points at three positions near the hub of the surface, near the outer edge of the blade surface of the blade and near the outer edge of the blade surface of the blade, and near the outer edge of the blade surface of the blade and rearward in the direction of rotation. The three-dimensional coordinates of each reference point are measured by adjusting the tip of the measurement probe to the reference point of each blade using. Then, a triangular plane having each reference point as a vertex is determined based on the three-dimensional coordinates of the three reference points for each blade surface of each blade. Then, based on a triangular plane having the above-described reference points as vertices determined by each blade and a predetermined rotation axis of the fan, the inclination of each blade with respect to the rotation axis of the fan and a plane orthogonal to the rotation axis. Condition (so-called,
It is possible to detect the falling of the blade and the mounting angle of the blade. Therefore, by providing about 3 to 10 reference points for measuring three-dimensional coordinates on each of the blades, the shape of the blades can be accurately measured, and the number of measurement steps can be reduced.
【０００７】また、請求項２のファンは、請求項１に記
載のファンにおいて、上記各羽根に設けられた上記基準
点のうちの３つの基準点を頂点として形成される三角形
の領域内に３次元座標測定用の基準点を設けたことを特
徴としている。According to a second aspect of the present invention, there is provided a fan according to the first aspect, wherein three of the reference points provided on each of the blades have a vertex at three reference points. It is characterized in that a reference point for dimensional coordinate measurement is provided.
【０００８】上記請求項２のファンによれば、上記基準
点のうちの３つの基準点を頂点とする三角形の領域内に
３次元座標測定用の基準点を設けることによって、上記
三角形を形成する３つの基準点とその三角形の領域内の
基準点から、羽根の曲面を近似的に定めることが可能と
なる。したがって、羽根の形状をより正確に測定でき
る。According to the fan of the second aspect, the triangle is formed by providing a reference point for measuring three-dimensional coordinates in a triangular area having three of the reference points as vertices. From the three reference points and the reference points in the triangular area, the curved surface of the blade can be approximately determined. Therefore, the shape of the blade can be measured more accurately.
【０００９】[0009]
【発明の実施の形態】以下、この発明のファンを図示の
実施の形態により詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a fan according to the present invention will be described in detail with reference to the illustrated embodiments.
【００１０】図１はこの発明の実施の一形態のプロペラ
式のファンの羽根の正面図である。このファンは、図１
に示すように、ハブ１と、ハブ１の外周面に放射状に設
けられた複数の羽根２(図１中においては１つのみ示す)
とを備えている。上記各羽根２の正圧側の翼面のハブ１
近傍に3次元座標測定用の基準点Ａを設けている。ま
た、上記羽根２の正圧側の翼面の外縁部近傍かつファン
の回転方向Ｒの後方側に３次元座標測定用の基準点Ｂを
設けている。また、上記羽根２の正圧側の翼面の外縁部
近傍かつファンの回転方向Ｒの前方側に３次元座標測定
用の基準点Ｃを設けている。さらに、上記３次元座標測
定用の基準点Ａ,Ｂ,Ｃを頂点として形成される三角形の
領域内かつ羽根２の略中央に、３次元座標測定用の基準
点Ｄを設けている。FIG. 1 is a front view of a blade of a propeller type fan according to an embodiment of the present invention. This fan is shown in FIG.
As shown in FIG. 1, a hub 1 and a plurality of blades 2 provided radially on the outer peripheral surface of the hub 1 (only one is shown in FIG. 1)
And Hub 1 on the pressure side of each blade 2
A reference point A for measuring three-dimensional coordinates is provided in the vicinity. A reference point B for measuring three-dimensional coordinates is provided near the outer edge of the blade surface on the positive pressure side of the blade 2 and on the rear side in the rotation direction R of the fan. A reference point C for three-dimensional coordinate measurement is provided near the outer edge of the blade surface on the positive pressure side of the blade 2 and in the front side in the rotation direction R of the fan. Further, a reference point D for measuring three-dimensional coordinates is provided in a triangular region formed with the reference points A, B, and C for measuring three-dimensional coordinates as vertices and substantially at the center of the blade 2.
【００１１】また、図２は上記ファンの一部の側面図
(理解容易のため羽根２を１枚のみ示す)を示し、図３,
図４は上記ファンの羽根２をファンの側方から見た側面
図を示している。FIG. 2 is a side view of a part of the fan.
(Only one blade 2 is shown for easy understanding), and FIG.
FIG. 4 shows a side view of the blade 2 of the fan as viewed from the side of the fan.
【００１２】上記構成のファンにおいて、測定時、図１
に示すように、３次元座標を測定する装置(図示せず)を
用いて、測定プローブの先端を各羽根２の翼面に設けら
れた基準点Ａ,Ｂ,Ｃ,Ｄに夫々合わせて、基準点Ａ,Ｂ,
Ｃ,Ｄの３次元座標を夫々測定する。そうすると、上記
各羽根２の翼面毎に、３つの基準点Ａ,Ｂ,Ｃの３次元座
標に基づいて基準点Ａ,Ｂ,Ｃを頂点とする三角形の平面
が夫々定まる。そして、各羽根２で定まった上記３つの
基準点Ａ,Ｂ,Ｃを頂点とする三角形の平面と予め定まっ
ているファンの回転軸とに基づいて、図２に示すよう
に、上記ファンの回転軸に対する各羽根２の傾き具合
(図２の矢印に示す羽根の倒れ込み)を検出する。また、
図３に示すように、上記回転軸に直交する平面に対する
各羽根２の傾き具合(図３の矢印に示す羽根の取りつけ
角度)とを検出する。In the fan having the above-described configuration, at the time of measurement, FIG.
As shown in (3), using a device for measuring three-dimensional coordinates (not shown), the tip of the measurement probe is aligned with reference points A, B, C, and D provided on the wing surface of each blade 2, respectively. Reference points A, B,
The three-dimensional coordinates of C and D are measured respectively. Then, a triangular plane having the vertices of the reference points A, B, and C is determined based on the three-dimensional coordinates of the three reference points A, B, and C for each blade surface of each of the blades 2. Then, based on a triangular plane having the three reference points A, B, and C as vertices determined by the blades 2 and a predetermined rotation axis of the fan, as shown in FIG. The degree of inclination of each blade 2 with respect to the axis
(Fall of the blade shown by the arrow in FIG. 2) is detected. Also,
As shown in FIG. 3, the degree of inclination of each blade 2 with respect to a plane perpendicular to the rotation axis (the mounting angle of the blade indicated by the arrow in FIG. 3) is detected.
【００１３】したがって、図１に示すように、上記３次
元座標測定用の基準点Ａ,Ｂ,Ｃを各羽根２に夫々設ける
ことによって、羽根２の形状を正確に測定でき、測定工
数を低減できる。Therefore, as shown in FIG. 1, by providing each of the blades 2 with the reference points A, B, and C for measuring the three-dimensional coordinates, the shape of the blade 2 can be accurately measured, and the number of measurement steps can be reduced. it can.
【００１４】また、図４(ａ)に示すように、上記３次元
座標測定用の基準点Ｂ,Ｃ,Ｄの３次元座標から、基準点
Ｂと基準点Ｄとの高低差Ｈ1および基準点Ｄと基準点Ｃ
との高低差Ｈ2を求めると共に、基準点Ｂから基準点Ｄ
までの水平距離と、基準点Ｄから基準点Ｃまでの水平距
離とを求める。そうすると、上記基準点Ｂから基準点Ｄ
までの水平距離と高低差Ｈ1とに基づいて、基準点Ｂと
基準点Ｄとの間における羽根２の曲がり具合を略検出す
ると共に、上記基準点Ｄから基準点Ｃまでの水平距離と
高低差Ｈ2とに基づいて、基準点Ｄと基準点Ｃとの間に
おける羽根２の曲がり具合を略検出する。また、図４
(ｂ)に示すように、上記基準点Ｂと基準点Ｃとを結ぶ線
分に直交しかつ基準点Ｄを含む平面と、その線分との交
点から、羽根２の翼面に対しておろされる垂線の長さＨ
3と、基準点Ｂと基準点Ｃを結ぶ線分の長さとに基づい
て、上記基準点Ｂと基準点Ｃとの間における羽根２の曲
がり具合を略検出する。なお、上記基準点Ｂ,Ｃと同様
に、３次元座標測定用の基準点Ａ(図１に示す)と基準点
Ｂとの間および基準点Ａと基準点Ｃとの間における羽根
２の曲がり具合を検出することも可能である。As shown in FIG. 4A, the three-dimensional coordinates of the reference points B, C, and D for measuring the three-dimensional coordinates are used to determine the height difference H 1 between the reference point B and the reference point D and the reference point H. Point D and reference point C
Reference point D along with obtaining height difference H 2, from the reference point B of
And the horizontal distance from the reference point D to the reference point C are determined. Then, from the reference point B to the reference point D
Until on the basis of the horizontal distance and the height difference H 1 of the curvature of the blade 2 between the reference point B and reference point D as well as a substantially detected, horizontal distance and height from the reference point D to the reference point C based on the difference H 2, approximately detect the curvature of the blade 2 between the reference point D and the reference point C. FIG.
As shown in (b), the plane perpendicular to the line connecting the reference point B and the reference point C and including the reference point D, and the intersection of the line with the plane, lower the blade surface of the blade 2 from the intersection. Length of perpendicular line H
Based on 3 and the length of a line connecting the reference points B and C, the degree of bending of the blade 2 between the reference points B and C is substantially detected. In addition, similarly to the above-mentioned reference points B and C, the bending of the blade 2 between the reference point A (shown in FIG. 1) for three-dimensional coordinate measurement and the reference point B and between the reference point A and the reference point C. It is also possible to detect the condition.
【００１５】したがって、上記各羽根２の曲面を近似的
に定めることが可能となるので、羽根２の形状をより正
確に測定できる。なお、ファンの各羽根に設ける基準点
を３〜１０個程度に限定すれば、ファンの羽根を通過す
る気流が乱れることもない。Therefore, the curved surface of each blade 2 can be approximately determined, so that the shape of each blade 2 can be measured more accurately. If the number of reference points provided on each blade of the fan is limited to about 3 to 10, the airflow passing through the blades of the fan will not be disturbed.
【００１６】上記実施の形態では、３次元座標測定用の
基準点Ａ,Ｂ,Ｃ,Ｄを各羽根２に設けたプロペラ式のフ
ァンについて説明したが、例えば斜流ファンや求心ファ
ン等でもよい。In the above embodiment, a propeller type fan having three-dimensional coordinate measurement reference points A, B, C, and D provided on each blade 2 has been described. However, for example, a mixed flow fan or a centripetal fan may be used. .
【００１７】また、上記実施の形態では、羽根２の翼面
に３次元座標測定用の基準点を４つ設けたが、ファンの
羽根を通る気流を乱さなければ、３次元座標測定用の基
準点を５個以上にしてもよい。また、上記ファンの羽根
２の負圧側の翼面に、３次元座標測定用の基準点を設け
てもよいし、正圧,負圧の両側の翼面に基準点を設けて
もよい。In the above-described embodiment, four reference points for three-dimensional coordinate measurement are provided on the blade surface of the blade 2. However, if the airflow passing through the blades of the fan is not disturbed, the three-dimensional coordinate measurement reference point is not disturbed. The number of points may be five or more. Further, a reference point for three-dimensional coordinate measurement may be provided on the negative pressure side of the blade 2 of the fan, or a reference point may be provided on both positive and negative pressure side surfaces.
【００１８】なお、３次元座標測定用の基準点は、３次
元座標を測定するためのプローブの先端を合わせやすい
形状であればよく、位置、形状、大きさ、個数を工夫し
て、ディンプルまたはボルテックスジェネレータのよう
な機能を有するものでもよい。The reference point for measuring the three-dimensional coordinates may be any shape as long as the tip of the probe for measuring the three-dimensional coordinates can be easily adjusted. It may have a function like a vortex generator.
【００１９】[0019]
【発明の効果】以上より明らかなように、請求項１の発
明のファンは、ファンの各羽根の翼面に少なくとも３つ
の３次元座標測定用の基準点を設けているので、基準点
を頂点とする平面を略特定して、ファンの回転軸および
その回転軸に直交する平面に対する各羽根の傾き具合を
検出することができる。したがって、上記ファンの羽根
の形状を正確に測定できると共に、測定工数を低減でき
る。As is apparent from the above description, the fan according to the first aspect of the present invention has at least three reference points for measuring three-dimensional coordinates on the blade surface of each blade of the fan. By substantially specifying the plane, the inclination of each blade with respect to the plane of rotation of the fan and a plane perpendicular to the axis of rotation can be detected. Therefore, the shape of the fan blade can be accurately measured, and the number of measurement steps can be reduced.
【００２０】また、請求項２の発明のファンは、上記基
準点のうちの３つの基準点を頂点とする三角形の領域内
に３次元座標測定用の基準点を設けるので、上記三角形
を形成する３つの基準点とその三角形の領域内の基準点
とにより羽根の曲面を近似的に定めることが可能とな
り、羽根の形状をより正確に測定できる。In the fan according to the second aspect of the present invention, since the reference point for measuring three-dimensional coordinates is provided in a triangular area having three of the reference points as vertices, the triangle is formed. The curved surface of the blade can be approximately determined by the three reference points and the reference points within the triangular region, and the shape of the blade can be measured more accurately.
【図１】 図１はこの発明の実施の一形態のファンの羽
根の正面図である。FIG. 1 is a front view of a blade of a fan according to an embodiment of the present invention.
【図２】 図２は上記ファンの一部の側面図である。FIG. 2 is a side view of a part of the fan.
【図３】 図３は上記ファンの羽根の側面図である。FIG. 3 is a side view of the blade of the fan.
【図４】 図４(ａ),図４(ｂ)は上記ファンの羽根の曲
がり具合を説明する側面図である。FIGS. 4 (a) and 4 (b) are side views for explaining how the blades of the fan are bent.
１…ハブ、２…羽根、Ａ,Ｂ,Ｃ,Ｄ…３次元座標測定用
の基準点。Reference numeral 1 denotes a hub, 2 denotes a blade, A, B, C, D: a reference point for measuring three-dimensional coordinates.
Claims (2)
射状に設けられた複数の羽根(２)とを有するファンにお
いて、 上記各羽根(２)の翼面に少なくとも３つの３次元座標測
定用の基準点(Ａ,Ｂ,Ｃ,Ｄ)を夫々設けたことを特徴と
するファン。1. A fan having a hub (1) and a plurality of blades (2) radially provided on an outer peripheral surface of the hub (1), wherein at least three blades are provided on a blade surface of each of the blades (2). A fan characterized by providing reference points (A, B, C, D) for measuring three-dimensional coordinates.
各羽根(２)に設けられた上記基準点(Ａ,Ｂ,Ｃ,Ｄ)のう
ちの３つの基準点(Ａ,Ｂ,Ｃ)を頂点として形成される三
角形の領域内に３次元座標測定用の基準点(Ｄ)を設けた
ことを特徴とするファン。2. The fan according to claim 1, wherein three reference points (A, B, C) of said reference points (A, B, C, D) provided on each of said blades (2). A fan characterized in that a reference point (D) for measuring three-dimensional coordinates is provided in a triangular area formed with a vertex as a vertex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP513199A JP3050219B1 (en) | 1999-01-12 | 1999-01-12 | fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP513199A JP3050219B1 (en) | 1999-01-12 | 1999-01-12 | fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3050219B1 JP3050219B1 (en) | 2000-06-12 |
| JP2000205191A true JP2000205191A (en) | 2000-07-25 |
Family
ID=11602769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| JP513199A Expired - Fee Related JP3050219B1 (en) | 1999-01-12 | 1999-01-12 | fan |
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| JP (1) | JP3050219B1 (en) |
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