JPS62110598U

JPS62110598U -

Info

Publication number: JPS62110598U
Application number: JP20235185U
Authority: JP
Priority date: 1985-12-27
Filing date: 1985-12-27
Publication date: 1987-07-14

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す構造図、第
２図は羽根の外側端部の形状を決定する角度θと
風量との関係を示す図、第３図は羽根の外側端部
の曲率半径と風量との関係を示す図、第４図は一
般的な横断流送風機を示す構成図、第５図は第４
図の羽根の詳細形状を示す構造図である。１…羽根車、２…羽根、２ａ…凹壁面、ｌ…弦
方向の長さ、ｒ_２…曲率半径。なお、図中同一符
号は同一又は相当部分を示す。 Figure 1 is a structural diagram showing one embodiment of this invention, Figure 2 is a diagram showing the relationship between the angle θ that determines the shape of the outer end of the blade and the air volume, and Figure 3 is a diagram showing the relationship between the air volume and the angle θ that determines the shape of the outer end of the blade. A diagram showing the relationship between the radius of curvature and air volume, Figure 4 is a configuration diagram showing a general cross-flow blower, and Figure 5 is a diagram showing the relationship between the radius of curvature and air volume.
It is a structural diagram showing the detailed shape of the blade shown in the figure. 1... Impeller, 2... Vane, 2a... Concave wall surface, l... Length in chord direction, r ₂ ... Radius of curvature. Note that the same reference numerals in the figures indicate the same or equivalent parts.

補正昭６１．８．１１実用新案登録請求の範囲を次のように補正する
。Amendment August 11, 1986 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】回転方向に弓状に湾曲した多数の羽根を周端部
に有して成る羽根車を備えた送風機において、前
記羽根の外側端部を、該羽根の凹壁面の延長面と
反対側の凸壁面とが略３５度以下の角度となるよ
うに形成し且つその先端が羽根の弦方向の長さの
１ないし４％の曲率半径の曲面となるように形成
したことを特徴とする送風機。[Claims for Utility Model Registration] In a blower equipped with an impeller having a plurality of blades curved in an arcuate manner in the rotation direction at the circumferential end thereof, the outer end of the blade is connected to the concave wall surface of the blade. Formed so that the extension surface and the convex wall surface on the opposite side form an angle of approximately 35 degrees or less, and the tip thereof is formed into a curved surface with a radius of curvature of 1 to 4% of the chordwise length of the blade. A blower featuring:

Claims

[Scope of utility model registration request]

In a blower equipped with an impeller having a plurality of blades curved in an arcuate manner in the rotation direction at the circumferential end, the outer end of the blade is connected to the extension surface of the concave wall surface of the blade and the outer surface of the impeller. An air blower characterized in that the blades are formed so that the angle between the blades and the blades is approximately 35 degrees or less, and the tips thereof are formed as curved surfaces with a radius of curvature of 1 to 4% of the length of the blade in the chord direction.