TWM571422U - Flow guiding device for axial flow fan - Google Patents

Abstract

The present invention is a flow guiding device disposed in an axial flow fan, the axial flow fan comprising a draft tube having an air inlet and an air outlet, a fan assembly disposed in the air guiding tube, and a fan assembly fixed thereto a flow guiding device between the downstream end of the fan assembly and the air outlet, wherein the flow guiding device comprises a plurality of air guiding plates arranged in a grid shape and parallel to the air flow direction, and the radial ends of each air guiding plate are respectively fixed In the inner wall of the draft tube, the swirling airflow from the fan assembly can be rectified and the air is blown from the air outlet by a linear airflow to increase the distance of the air supply.

Description

Flow guiding device for axial flow fan

The present invention is a flow guiding device disposed in an axial flow fan, which mainly uses the flow guiding device to rectify the vortex flow from the fan assembly, and then supplies air from the air outlet through a linear airflow to increase the distance of the air supply.

Axial fans are common ventilation equipment in industrial environments, such as tunnels, basements, bed cabins and other places for air supply. The conventional axial flow fan includes a base that can be placed on the ground, a guide tube that is fixed to the base, and a fan assembly that is disposed at a central position in the draft tube.

The two ends of the guide tube are respectively an air inlet and an air outlet. When the fan assembly is in operation, the swirling airflow generated by the rotation of the fan assembly can be discharged from the air outlet by the guiding of the guiding tube to achieve the function of supplying air, but the vortex flow After being discharged from the air outlet, because there is no additional flow guiding device to assist the wind collecting, it is easy to disperse the vortex airflow or generate a turbulent flow phenomenon, thereby affecting the air supply distance, resulting in a decrease in air supply efficiency, so that the operator needs to set a plurality of axial flow fans. In order to achieve the effect of ventilation and ventilation, it is not economical.

In view of this, the creator has accumulated many years of research and practical experience in related fields, and created a flow guiding device for axial flow fans to improve the problem that the traditional axial flow fan structure easily affects the air supply distance.

The purpose of the present invention is to provide a flow guiding device installed in an axial flow fan, the flow guiding device having a plurality of air guiding plates parallel to the airflow direction, capable of rectifying the swirling airflow from the fan assembly and linearly flowing from Air is supplied to the air outlet to increase the distance of the air supply.

In order to achieve the above object, the present invention is a flow guiding device for an axial flow fan, the axial flow fan comprising a draft tube having an air inlet and an air outlet, a fan assembly disposed in the air guiding tube, and a fixing a flow guiding device between the downstream end of the fan assembly and the air outlet, wherein the flow guiding device comprises a plurality of air guiding plates arranged in a grid shape and parallel to the air flow direction, and the radial ends of each air guiding plate They are respectively fixed to the inner wall of the draft tube, and the vortex flow from the fan assembly can be rectified and then blown from the air outlet by a linear air flow.

With the above configuration, the vortex flow generated when the fan assembly is operated is first rectified into a linear airflow through the downstream plurality of air deflectors, and then the air is blown from the air outlet, thereby improving the airflow when the conventional axial flow fan is discharged. The phenomenon of dispersion or turbulence increases the distance of the air supply.

The implementation of each component is further described below:

In the implementation, the air deflector is fixed on one side of the inner wall of the draft tube and has a positioning piece bent, and the positioning piece is fixedly fixed to the inner wall of the draft tube.

When implemented, a plurality of wind deflectors are arranged in a well-shaped shape.

In implementation, the outer circumference of the air guiding tube corresponding to the air inlet and the air outlet is an expanded diameter section, and the flow guiding device is disposed in the expanded diameter section.

In implementation, the guide tube corresponds to a neck portion of the outer periphery of the fan assembly, and the diameter of the neck portion is smaller than the diameter of the enlarged diameter portion.

When implemented, the outer circumference of the guide tube is straight from the air inlet to the air outlet.

In implementation, the air inlet and the air outlet of the draft tube are respectively provided with a protection net.

Compared with the prior art, the flow guiding device of the present invention can rectify the vortex flow from the fan assembly and supply air from the air outlet by linear airflow, thereby improving the phenomenon of airflow dispersion or turbulence when the conventional axial fan blows air, thereby improving The distance from the wind.

In the following, according to the technical means of the creation, the implementation method suitable for the creation is listed, and the description is as follows:

As shown in the first to third figures, the present invention is a flow guiding device disposed in an axial flow fan, the axial flow fan including a guide tube 10, a fan assembly 20 disposed in the draft tube 10, and a guide The flow device 30 has an air inlet 11 and an air outlet 12 at two ends, and the air inlet 11 and the air outlet 12 are respectively provided with a protection net 13 .

The flow guiding device 30 is fixed between the downstream end of the fan assembly 20 and the air outlet 12, and includes a plurality of air deflectors 31. The plurality of air deflectors 31 are arranged in a grid shape and are parallel to the airflow direction, and each air deflector The two ends of the radial direction are respectively fixed on the inner wall of the air guiding tube 10. When the air guiding plate 31 is fixed on one side of the inner wall of the air guiding tube 10, a positioning piece 32 is bent and extended. The joint is fixed to the inner wall of the draft tube 10, and the plurality of air deflectors 31 can be arranged in a well-shaped manner as shown in the drawing.

When the fan assembly 20 is operated, the swirling airflow first passes through the downstream flow guiding device 30, and the plurality of air deflectors 31 can rectify the swirling airflow from the fan assembly 20 and then supply air from the air outlet 12 in a linear airflow, thereby improving The distance of the air supply is improved to improve the airflow dispersion or turbulence when the traditional axial fan is out of the wind.

Furthermore, when the draft tube 10 is implemented, the outer periphery between the air inlet 11 and the air outlet 12 has a straight cylindrical shape. Or, as shown in the figure, the outer circumference of the air inlet 11 and the air outlet 12 is an enlarged diameter section 14 , and the outer circumference of the fan assembly 20 is a necked section 15 , and the neck section 15 The diameter of the cylinder is smaller than the diameter of the diameter-enlarged section 14, and the flow guiding device 30 is disposed in the enlarged diameter section 14.

In addition, the axial flow fan further includes a support frame 40 that can be placed on the ground. The support frame 40 is pivoted on both sides of the guide tube 10, so that the guide tube 10 can be adjusted to be blown relative to the support frame 40. Pitch angle.

The above description of the embodiments and the drawings are merely illustrative of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; any objects that are similar or identical to the purpose, structure, device, features, etc. of the present invention are The scope of the patent for this creation.

10‧‧‧Draining tube

11‧‧‧Air inlet

12‧‧‧air outlet

13‧‧‧ protective net

14‧‧‧Expanding section

15‧‧‧Neck section

20‧‧‧Fan components

30‧‧‧ flow guiding device

31‧‧‧Air deflector

32‧‧‧ Positioning film

40‧‧‧Support frame

The first picture: a schematic diagram of the location of the creation. The second picture: the three-dimensional appearance of the creation. The third picture: This creation is set in the schematic.

Claims (7)

A flow guiding device for an axial flow fan, the axial flow fan comprising a draft tube having an air inlet and an air outlet, a fan assembly disposed in the draft tube, and a fan assembly fixed to the downstream end of the fan assembly a flow guiding device between the tuyes, wherein the flow guiding device comprises a plurality of air guiding plates arranged in a grid shape and parallel to the air flow direction, and the radial ends of each air guiding plate are respectively fixed in the guiding tube The wall is capable of rectifying the swirling airflow from the fan assembly and delivering air from the air outlet in a linear airflow. The flow guiding device of the axial flow fan of claim 1, wherein the air deflector is fixed on one side of the inner wall of the air guiding tube and has a positioning piece bent, and the positioning piece is fixedly fixed in the guiding tube. wall. The flow guiding device of the axial flow fan according to claim 1 or 2, wherein the plurality of air deflectors are arranged in a well-shaped manner. The flow guiding device of the axial flow fan according to claim 1 or 2, wherein the outer circumference of the air inlet and the air outlet is an expanded diameter section, and the flow guiding device is disposed in the expanded diameter section. . The flow guiding device of the axial flow fan according to claim 4, wherein the guiding tube corresponds to a neck portion of the outer circumference of the fan assembly, and the diameter of the narrowing portion is smaller than that of the expanding portion path. The flow guiding device of the axial flow fan according to claim 1 or 2, wherein the outer circumference of the draft tube has a straight cylindrical shape from the air inlet to the air outlet. The flow guiding device of the axial flow fan according to claim 1 or 2, wherein the air inlet and the air outlet of the air guiding tube are respectively provided with a protection net.