JPS623998U

JPS623998U -

Info

Publication number: JPS623998U
Application number: JP9453185U
Authority: JP
Priority date: 1985-06-21
Filing date: 1985-06-21
Publication date: 1987-01-10

Description

[Brief explanation of the drawing]

第１図は、本考案の実施例にかかる軸流送風機
の概略的な断面図、第２図は、第１図の軸流送風
機における動翼面の平面図、第３図は、第１図の
軸流送風機における動翼の代表径での断面図、第
４図、第５図、第６図、第８図および第１０図は
、軸流送風機におけくｈ―ΔＱ、θ―ΔＱ、ｌ―
ΔＱ、Ｇ―ΔＱおよびｍ―ΔＱ特性図、第７図、
第９図および第１１図の各イ，ロは、ｌ―ΔＱ、
Ｇ―ΔＱおよびｍ―ΔＱ特性図において適切寸法
範囲外での空気流の状態を示す説明図、第１２図
および第１３図は、比較例と本実施例における流
量―静圧（Ｑ―ＰＳ）、流量―運転音（Ｑ―ＬＡ
）特性図、第１４図は、従来公知（比較例）の軸
流送風機の概略的な断面図、第１５図は、第１４
図図示の軸流送風機における動翼の代表径での断
面図である。１……フアン、２……フアンガイド、４……ハ
ブ、５……動翼、５ａ……ハブ側、５ｂ……チツ
プ側、５ｃ……圧力面、５ｄ……負圧面、７……
スリツト。 FIG. 1 is a schematic cross-sectional view of an axial blower according to an embodiment of the present invention, FIG. 2 is a plan view of the rotor blade surface of the axial blower shown in FIG. 1, and FIG. 4, 5, 6, 8, and 10 are cross-sectional views at representative diameters of rotor blades in axial flow blowers, h-ΔQ, θ-ΔQ, l-
ΔQ, G-ΔQ and m-ΔQ characteristics diagram, Fig. 7,
Each of A and B in FIGS. 9 and 11 is l−ΔQ,
Explanatory diagrams showing the state of air flow outside the appropriate size range in the G-ΔQ and m-ΔQ characteristic diagrams, Figures 12 and 13 are flow rate vs. static pressure (Q-PS) in the comparative example and this example. , Flow rate-operating sound (Q-LA
) Characteristic diagram, FIG. 14 is a schematic cross-sectional view of a conventionally known (comparative example) axial flow blower, and FIG.
FIG. 2 is a cross-sectional view of the rotor blade at a representative diameter in the illustrated axial blower. 1... Fan, 2... Fan guide, 4... Hub, 5... Moving blade, 5a... Hub side, 5b... Chip side, 5c... Pressure surface, 5d... Negative pressure surface, 7...
Slits.

Claims

[Claims for Utility Model Registration] A fan 1 comprising a plurality of rotor blades 5, 5... formed on the outer periphery of a hub 4, and a fan 1 provided on the outer periphery of the fan 1 to partition an inflow region and an outflow region. from the hub side 5a to the tip side 5b of each rotor blade 5, from the pressure surface 5c to the negative pressure surface 5.
In the axial flow blower in which a slit 7 is formed to allow air to pass through the rotor blade 5, the radial length H from the outer circumferential surface of the hub 4 to the tip side 5b of the rotor blade 5, the radial length H from the outer circumferential surface of the hub 4 When the length of the slit 7 in the direction is h, and the warp angle at the average flow radius of the rotor blade 5 is θ, then 0.5H≦h≦0.9H 30°≦θ≦70°. An axial flow blower characterized by the following settings.