CN202867351U

CN202867351U - Vortex fluid guiding device of tube-axial fan

Info

Publication number: CN202867351U
Application number: CN 201220465418
Authority: CN
Inventors: 傅文彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-12
Filing date: 2012-09-12
Publication date: 2013-04-10
Anticipated expiration: 2022-09-12

Abstract

A vortex fluid guiding device of a tube-axial fan is arranged on an air exhausting side of the tube-axial fan, and comprises a plurality of fluid guiding blades. The plurality of the fluid guiding blades are distributed on the surrounding position of a radial cross section of an airflow path. The cross section of each fluid guiding blade is in a skewed-swept type. Each fluid guiding blade stretches by a certain distance from the surrounding position towards a direction of the axis of the tube-axial fan. Due to the fluid guiding blades, airflow exhausted from the air exhausting side of the tube-axial fan can form vortex airflow shaped like tornado, and the airflow can focus on the center and can not disperse so that the vortex fluid guiding device has the function of focusing the airflow and enabling the blowing distance of the airflow to be lengthened.

Description

The vortex flow guide device of axial flow fan

Technical field

The utility model is the vortex flow guide device of the wind-guiding construct of relevant fan, particularly a kind of axial flow fan.

Background technique

Traditional fan can be divided into two kinds of axial flow fan and centrifugal fans according to the design of flabellum, and generally speaking the purposes of fan is to produce air-flow, and then heat radiation is provided or promotes the effect of air ventilation.

A kind of known brush-less fan that is wherein applied in a large number power supply unit (for example employed power supply unit of personal computer) is exactly a kind of axial flow fan, as shown in Figure 4, known brush-less fan comprises: the housing 40 of a hollow tubular, side at housing 40 has support 41, shaft core position at support 41 is provided with DC Brushless Motor 42, drive axial flow flabellum 43 by DC Brushless Motor 42 and rotate, and then produce air-flow in the air draft side of brush-less fan.

The vortex flow guide device of known axial flow fan all is to flow along rectilinear direction, the centrality of this air-flow is not good so can spread gradually along with the increase of the distance that flows (shown in arrow among Fig. 4), if increase the fetch of air-flow, a kind of direct method is the blast that improves the rotating speed of fan or improve the air draft side.

The method of another kind of known fetch for increasing air-flow is the air draft side installing guide vane at fan, in order to change or the direction of control air-flow, air-flow can be concentrated and is difficult for diffusion.Known guide vane major part is a kind of straight slim blade, traditional guide vane has the different arrangement mode of many kinds, palisade for example, latticed or radial, wherein arrange in mode parallel to each other on the surface of each guide vane, so the air-flow of being discharged by the air draft side of conventional fan all is to flow along rectilinear direction, among open space, this air-flow that flows along rectilinear direction can be along with the increase of the distance that flows gradually to around diffusion, finally be tending towards disappearing or stopping, therefore the guide vane of this flat is very limited for the effect of the mobile distance that increases air-flow.

The model utility content

Because the centrality of the air-flow that conventional fan produces is not good, can't make the problem of the mobile distance increase of air-flow, the utility model proposes a kind of vortex flow guide device of axial flow fan, the air-flow that the air draft side of axial flow fan is discharged forms as the eddy airstream of tornado shape, and then has focused airflow and make the effect of the fetch prolongation of air-flow.

The one embodiment structure of the vortex flow guide device of the utility model axial flow fan, be installed in the air draft side of an axial flow fan, comprise: a plurality of guide vanes, these guide vanes are distributed in the radially cross section location about of air flow path, have an angle between the direction of each guide vane and air-flow, each guide vane stretches out a segment distance by aforesaid location about towards the direction in the axle center of axial flow fan.

The air-flow that the air draft side of axial flow fan is discharged by this guide vane forms a kind of eddy airstream such as the tornado shape, and makes air-flow concentrate on central authorities and can not scatter, and then has focused airflow and make the effect of the fetch prolongation of air-flow.

According to an embodiment of the present utility model, wherein the section configuration of guide vane is a kind of curved type of plunderring.

According to another embodiment of the present utility model, wherein the section configuration of guide vane also can be wherein any of straight sheet, shuttle type and streamlined configuration.

The one embodiment structure of the vortex flow guide device of the utility model axial flow fan, axial flow fan wherein has a housing, the sidewall that housing has an annular can be centered around the periphery of the air draft side of fan, aforesaid a plurality of guide vanes be arranged on this annular sidewall, the air-flow that the air draft side of axial flow fan is discharged by this guide vane forms a kind of eddy airstream such as the tornado shape, and make air-flow concentrate on central authorities and can not scatter, and then the effect that has focused airflow and the fetch of air-flow is prolonged.

Relevant other effect of the present utility model and embodiment cooperate graphic being described as follows hereby.

Description of drawings

Fig. 1 is a kind of embodiment's tectonic maps of the present utility model, has shown a kind of embodiment's structure of the vortex flow guide device of axial flow fan.

Fig. 2 is Fig. 1 front view, the arrangement position of a plurality of guide vanes of the vortex flow guide device of demonstration axial flow fan.

Fig. 3 be Fig. 1 at the structural map section of III-III position, show that air-flow is by the flow situation of guide vane.

Fig. 4 is the structure profile diagram of known axial flow fan, shows the flow situation of air-flow.

The primary clustering symbol description

The known techniques assembly

40 housings, 42 DC Brushless Motor

41 supports, 43 axial flow flabellums

The utility model assembly

10 guide vanes, 30 flabellums

The axle center of 20 housing L fans

The sidewall IN suction side of 21 annulars

22 support OUT air draft sides

23 DC Brushless Motor

Embodiment

A kind of embodiment's structure of the vortex flow guide device of the utility model axial flow fan, as shown in Figure 1, comprise: a plurality of guide vanes 10 are installed in the air draft side OUT of axial flow fan, these guide vanes 10 are distributed in the radially cross section location about (see figure 2) of air flow path, has an angle theta (see figure 3) between the direction of each guide vane 10 and air-flow, and each guide vane 10 stretches out a segment distance by aforesaid location about towards the direction of the axle center of fan L, so that the air-flow that flows from the periphery of air flow path can and be had an effect with it by these guide vanes 10.According to a kind of embodiment of the present utility model, wherein the section configuration of guide vane 10 is a kind of curved type (see figure 3) of plunderring, in another embodiment, the section configuration of guide vane 10 also can be straight sheet, the shuttle type, with wherein any of streamlined configuration, as long as have an angle theta between the direction of each guide vane 10 and air-flow, just allowing has an effect by the air-flow of these guide vanes 10 forms a kind of eddy airstream such as the tornado shape, and make air-flow concentrate on central authorities and can not scatter, and then the effect that has focused airflow and the fetch of air-flow is prolonged.

The one embodiment structure of the vortex flow guide device of the utility model axial flow fan, axial flow fan wherein has a housing 20, the sidewall 21 that housing 20 has an annular can be centered around the periphery of the air draft side OUT of axial flow fan, side at housing 20 has a support 22, shaft core position at support 22 is provided with a direct current brushless motor 23, the flabellum 30 that drives axial flow fan by DC Brushless Motor 23 rotates, a kind of example application wherein as shown in Figure 1, housing 20 is pipe members of a kind of hollow, and axial flow fan is a kind of brushless radiating fan that is common in the power supply unit of personal computer.The sidewall 21 that is arranged on annular of aforesaid a plurality of guide vanes, each guide vane 10 stretches out a segment distance by the sidewall 21 of annular towards the direction of the axle center of axial flow fan L, in other words, these guide vanes 10 are arranged on the air draft side OUT of axial flow fan and are positioned at air flow path.

When the flabellum 30 of axial flow fan rotates, air-flow can be seen by the suction side IN(of axial flow fan shown in the left arrow of Fig. 3) by the flabellum 30 in rotating, air draft side OUT by axial flow fan discharges again, the air-flow that the air draft side OUT of axial flow fan is discharged by this guide vane 10 forms a kind of eddy airstream such as the tornado shape, make air-flow concentrate on central authorities and can not scatter (shown in arrow among Fig. 3), and then the effect that has focused airflow and the fetch of air-flow is prolonged.

Generally speaking, housing 20 can utilize the manufacture of ejection formation to make with guide vane 10 together, another kind of feasible mode, housing 20 may be to adopt metal (such as aluminum alloy) manufacturing, 10 of guide vanes are stand-alone assemblies made from plastics or metallic material in addition, then a plurality of guide vanes 10 are installed in an axial end of housing 20, and are that the position is at the air draft side OUT of fan.

Although the utility model has seen through the above embodiments and has disclosed as above; so it is not to limit the utility model; anyly have the knack of alike skill person; within not breaking away from spirit and scope of the present utility model; when can doing a little change and retouching, therefore scope of patent protection of the present utility model must be looked the appended request item person of defining of this specification and is as the criterion.

Claims

1. the vortex flow guide device of an axial flow fan, be installed in the air draft side of an axial flow fan, it is characterized in that, comprise: a plurality of guide vanes, those guide vanes are distributed in the radially cross section location about of air flow path, have an angle between the direction of each this guide vane and air-flow, each this guide vane stretches out a segment distance by this location about towards the direction in the axle center of this axial flow fan.

2. the vortex flow guide device of axial flow fan as claimed in claim 1, it is characterized in that: the section configuration of this guide vane is a kind of curved type of plunderring.

3. the vortex flow guide device of axial flow fan as claimed in claim 1 is characterized in that: the section configuration of this guide vane can be wherein any of straight sheet, shuttle type and streamlined configuration.

4. the vortex flow guide device of axial flow fan as claimed in claim 1, it is characterized in that: also comprise a housing, this housing has the sidewall of an annular, this annular sidewall can be centered around the periphery of this air draft side of this fan, and those guide vanes stretch out a segment distance by this annular sidewall towards the direction in the axle center of this axial flow fan.

5. the vortex flow guide device of axial flow fan as claimed in claim 4 is characterized in that: this housing and those guide vanes utilize the manufacture of ejection formation to make together.

6. the vortex flow guide device of axial flow fan as claimed in claim 4, it is characterized in that: those guide vanes are a kind of stand-alone assemblies, then should be installed in this housing by a plurality of guide vanes, and are that the position is in this air draft side of this axial flow fan.