CN201963600U

CN201963600U - Blade of axial flow fan

Info

Publication number: CN201963600U
Application number: CN2011200870410U
Authority: CN
Inventors: 林基竹
Original assignee: AIRLIN Co Ltd
Current assignee: AIRLIN Co Ltd
Priority date: 2011-03-29
Filing date: 2011-03-29
Publication date: 2011-09-07
Anticipated expiration: 2021-03-29

Abstract

The utility model discloses a blade of an axial flow fan. The blade comprises a supporting rod, wherein one end of the supporting rod is a fixed end; a fan blade is a trapezoidal platy body and connected with the other end of the supporting rod, and a curved surface is formed on the surface of the fan blade and is distorted wavy; a first edge and a second edge are curved and arranged on two opposite sides of the fan blade respectively, the thickness of the fan blade near to the first edge is narrower and thinner, and the thickness of the fan blade near to the second edge is wider and thicker; and a side edge is truncated and arranged at the other end of the fan blade, which is connected with the supporting rod. The supporting rod, the fixed end and the fan blade are integrally formed, the fan blade structure is firmer and more stable by adopting the integrally formed structure, the truncated side edge, the wavy curved surface as well as the first edge and the second edge with different thicknesses, the turbulence of the fan blade is more sufficient, so that the fan blade generates larger air volume, and the fan blade is power-saving and has smaller rotation noise.

Description

Axial fan blade

Technical field

The utility model relates to a kind of fan blade, particularly a kind ofly is applied to axial flow fan, and flabellum has the fan blade of curved surface and other special construction.

Background technique

Fan is by large cooling column, Tunnel Ventilation Fan, to family expenses fan, lampblack exhauster fan, can say so to micro computer cooling fan etc. and be seen everywhere again.And generally be used to build the large-scale fan of building exhaust ventilation, be broadly divided into centrifugal and two kinds of axial flow.Centrifugal fan can produce very high blast, is fit to device in the big place of ventilation impedance, for example is provided with the building building of ventilation duct, or place such as cereal thick-layer drying.Another kind then is an axial flow fan, be booster again, be industrial and mining enterprise's a kind of fans commonly used, its structure is roughly a drive motor its live axle is connected with rotating shaft, also encircles to establish in the rotating shaft and arranges a considerable amount of flabellums, and drive motor and flabellum also are arranged in the fan housing, it is used for local ventilation, easy for installation, the ventilation effect is obvious, and the general centrifugal fan of axial flow fan can produce bigger air quantity.

Yet the design of axial fan blade but still rests on early stage imitation, the moulding, and is very limited for the lifting of performance; Axial fan of the prior art, its flabellum mostly is a simple flat board greatly, by and rotating shaft between the inclination angle of tool rule around arrangement, come to produce disturbance with air, and then generation wind-force, yet axial fan of the prior art but can produce the noise of disturbing the people when rotating, also because of bad fan blade structure, cause huge windage simultaneously, and the power of fan rotation is reduced, the drive motor very power consumption that becomes, though and the general centrifugal fan of the air quantity that produces big, desirable to the greatest extent yet.

The model utility content

Main purpose of the present utility model is to provide a kind of blade structure of axial flow fan of improvement, improving axial flow fan of the prior art because of its bad blade structure, and problems such as the noise that is caused, power consumption and deficiency in draught.

For reaching above-mentioned purpose, the concrete technological means of the utility model is: a pole, and an end of pole is a fixed end, fixed end is a round button dish structure; The other end of pole connects a flabellum, and flabellum generally is a trapezoidal tabular body, and its surface has curved surface, and curved surface is the wavy of distortion, makes flabellum integral body have the form of oblique bending; The relative both sides of flabellum have one first edge and one second edge respectively, and flabellum is narrower thin near first edge's thickness, and are generouser near second edge's thickness, and the curved shape in first edge and second edge makes flabellum integral body level off to the streamline fin-shaped; The other end that flabellum is connected with pole is a side, and side is the truncation shape; Described pole, fixed end and flabellum are formed in one.

By above-mentioned technological means, the attainable effect concrete manifestation of the utility model is: flabellum is cuts flat-shaped side, can with the inner edge of the fan housing of axial flow fan near and level off to the driving fit shape, only keep fine clearance between the side of flabellum and the inner edge of fan housing, so can make axial flow fan in the running, the rotating range of flabellum can be included the whole inner edge scope in the fan housing, so can make flabellum revolve the gas that stirs by fan housing fully and not have a bit leakage, and can produce more plentiful and stable air quantity, the air quantity that sucks when logical is also bigger, makes the usefulness of regulating air perform to ultimate attainment; In addition, the curved surface that is wave on the flabellum of the present utility model, can be in the running at axial flow fan, with the air-flow of process push away row's guiding, make outside the discharge axial flow fan that the air-flow that is streaked by flabellum fills part, and can not flow to follow-up rotating flabellum, so not only can significantly reduce the noise of running, more make the flabellum windage not can because of the faster rotational speed windage also with increase progressively, make the more smooth and power saving of axial flow fan running, but increasing exhaust amount more simultaneously.

Because flabellum generally is a trapezoidal tabular body, so the center of gravity of flabellum can be comparatively near rotating shaft place, so, when axial flow fan in the running, center of gravity deflection rotating shaft flabellum rotary power is preferable, it is comparatively laborsaving to rotate meeting, and makes power consumption littler.

Description of drawings

Fig. 1 is the stereo appearance figure of axial fan blade of the present utility model.

Fig. 2 is the front elevation of axial fan blade of the present utility model.

Fig. 3 is the rear view of axial fan blade of the present utility model.

Fig. 4 is the left view of axial fan blade of the present utility model.

Fig. 5 is the right elevation of axial fan blade of the present utility model.

Fig. 6 is the plan view of axial fan blade of the present utility model.

Fig. 7 is the worm's eye view of axial fan blade of the present utility model.

Fig. 8 is the enforcement phase diagram of axial fan blade of the present utility model.

Embodiment

Now sincerely form with regard to its structure of axial fan blade of the present utility model, and the effect that can produce, cooperate graphicly, the preferred embodiment of lifting a this case is described in detail as follows:

Referring to figs. 1 to shown in Figure 7, axial fan blade of the present utility model, it has a pole 1, and an end of pole 1 is a fixed end 10, and fixed end 10 is a round button dish structure; The other end of pole 1 connects a flabellum 11, and flabellum 11 generally is a trapezoidal tabular body, and its surface has curved surface 110, and curved surface 110 is the wavy of distortion, makes flabellum 11 integral body have the form of oblique bending; The relative both sides of flabellum 11 have one

first edge

111 and 112, the first edges 111, one second edge and second edge, 112 curved shapes respectively, make flabellum 11 integral body level off to the streamline fin-shaped; The other end that flabellum 11 is connected with pole 1 is a side 113, side 113 is the truncation shape, and the width of this side 113 is less than an end that connects this pole 1, the thickness of this flabellum 11 from this first edge 111 toward second edges 112 thickening (can find out the section shape of flabellum 11 integral body) gradually at side 113.Described pole 1, fixed end 10 and flabellum 11 are formed in one, and its integrated structure is fit to a large amount of production, and is with low cost, save the step of loaded down with trivial details assembling in the processing procedure, and integral-formed jointless, structure is strong, durable is stablized antidetonation, is difficult for torsional deformation.

With reference to shown in Figure 8, when the fixed end 10 of the utility model with its pole 1, be located on the rotating shaft 90 of axial flow fan 9 in equidistant regularly arranged mode, and the drive motor 91 of axial flow fan 9 drives rotating shaft 90, and when driving flabellum 11 of the present utility model, because the thickness at first edge 111 of flabellum 11 is thin than second edge 112, so when flabellum 11 streaks air, have the effect that is similar to as the blade cutting article, the windage that flabellum 11 is suffered can be less, thereby no matter be in axial flow fan 9 startup just or the running, all can significantly save electric power (after tested, compare with axial flow fan of the prior art, can save 25% electric power approximately).

Flabellum 11 is cuts flat-shaped side 113, can with the inner edge of the fan housing 92 of axial flow fan 9 near and level off to the driving fit shape, only keep fine clearance between the side 113 of flabellum 11 and the inner edge of fan housing 92, so can make axial flow fan 9 in the running, the rotating range of flabellum 11 can be included the whole inner edge scope in the fan housing 92, so can make flabellum 11 revolve the gas that stirs by fan housing 92 fully and not have a bit leakage, and can produce more plentiful and stable air quantity, the air quantity that sucks when logical is also bigger, makes the usefulness of regulating air perform to ultimate attainment.

In addition, the curved surface that is wave on the flabellum 11 of the present utility model, can be in the running in axial flow fan 9, with the air-flow of process push away row's guiding, make outside the discharge axial flow fan 9 that the air-flow that is streaked by flabellum 11 fills part, and can not flow to follow-up rotating flabellum, so not only can the increasing exhaust amount, more make flabellum 11 windages can not make axial flow fan 9 turn round more smooth and power saving because of the faster rotational speed windage also increases progressively thereupon, and the also significantly reduction of the noise of running!

Though the utility model is described by previous embodiment, but still can change its form and details, reach not breaking away from spirit of the present utility model, and can understand by those of ordinary skill in the art.Aforementioned preferred embodiment of the present utility model, one of the mode that can specifically implement for mat the utility model principle only, but not as restriction should define according to the accompanying Claim book and is as the criterion.

Claims

1. an axial fan blade is characterized in that, this axial fan blade has a pole, and an end of this pole has a fixed end; The other end of this pole connects a flabellum, and this flabellum is a trapezoidal tabular body, and its surface has curved surface, and this curved surface is the wavy of distortion, and this flabellum integral body has the form of oblique bending; The relative both sides of this flabellum have one first edge and one second edge respectively, this first edge and this curved shape in second edge; The other end that this flabellum is connected with this pole is a side, and this side is the truncation shape, and the width of this side is less than an end that connects this pole, the thickness of this flabellum from this first edge toward second edge thickening gradually; Described pole, fixed end and flabellum are formed in one.

2. axial fan blade according to claim 1 is characterized in that, described flabellum integral body levels off to the streamline fin-shaped.