JPS5848998U

JPS5848998U - Juan

Info

Publication number: JPS5848998U
Application number: JP14392781U
Authority: JP
Inventors: 俊文棚橋
Original assignee: カルソニックカンセイ株式会社
Priority date: 1981-09-30
Filing date: 1981-09-30
Publication date: 1983-04-02
Also published as: JPS6133277Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

−第１図は従来の冷却ファンを示す斜視図、第２・　　
図は第１図の■−■線に沿う断面図、第３図はこの考案
に係るファンの一実施例を示す斜視図、第１　４図は第
３図のＩＶ−ＩＶ線に沿う断面図、第５図Ａ〉　　およ
びＢはこの考案に係るシアン羽根の翼断面と１、　一般
の流線形翼断面形状とそれぞれ示す図、第６図はファン
羽根の変形例を示す図である。１０・・・・・・ファン、１１・・・・・・ファン羽根
、１２・・・・・・凸条、１３・・・・・・凹溝、１４
・曲傅−ディング縁、：　　１５・・・・・・トレーリ
ング縁、１６−−−−−−キヤンバライン（中心線）、
１７・・・・・・アッパライン、１８・・曲ロワーライ
ン。- Figure 1 is a perspective view showing a conventional cooling fan;
The figure is a sectional view taken along the line ■-■ in Fig. 1, Fig. 3 is a perspective view showing an embodiment of the fan according to this invention, and Fig. 14 is a sectional view taken along the line IV-IV in Fig. 3. , FIGS. 5A and 5B are views showing a cross-sectional shape of a cyan blade according to this invention, 1 and a general streamlined blade cross-sectional shape, respectively, and FIG. 6 is a view showing a modified example of the fan blade. 10...Fan, 11...Fan blade, 12...Convex strip, 13...Concave groove, 14
・Cufu-ding edge: 15... Trailing edge, 16-------camber line (center line),
17... Upper line, 18... Lower line of the song.

Claims

[Scope of utility model registration request]

(1) In a fan in which a plurality of fan blades are formed by molding a metal plate, each of the fan blades is integrally molded with a plurality of protrusions and grooves extending in opposite directions, and a cross section of the fan blade is formed. A fan characterized in that the above-mentioned protrusions are arranged so as to be located on the upper line of the airfoil shape, and the recessed portions are arranged on the lower line of the airfoil shape.

(2) The fan according to claim 1, wherein the protrusions and grooves formed on each fan blade are formed over the entire length from the root to the tip of the fan blade.

(3) The fan according to item 1 of the scope of claim (7), wherein each fan blade is formed such that its leading edge and trailing edge follow a camber line in its cross section.

(4) In the cross section, each fan blade has three protrusions and two or three protrusions from the leading edge to the trailing edge.
The fan according to claim 12 of claim 1, wherein two concave grooves are alternately formed and the first convex strip continues from the leading edge along the camber line.