CN212028177U - Nylon fan blade - Google Patents
Nylon fan blade Download PDFInfo
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- CN212028177U CN212028177U CN202020351769.9U CN202020351769U CN212028177U CN 212028177 U CN212028177 U CN 212028177U CN 202020351769 U CN202020351769 U CN 202020351769U CN 212028177 U CN212028177 U CN 212028177U
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Abstract
The utility model relates to a nylon fan blade, which has bending change in both the rotation direction and the axial direction; the utility model discloses fan blade's crooked design in two directions can ensure that the air current carries out even air flow separation at the trailing edge position of fan blade behind the fan blade surface, makes the fan air-out more even to can improve the wind wheel efficiency effectively and reduce the consumption environmental protection. The front edge and the rear edge of the blade extend axially, so that the pressure distribution on the surface of the blade is more uniform, the flow loss is reduced, and the energy efficiency ratio of the wind wheel is improved; the fan blade is fixed on the fan hub, and the fan blade and the fan hub can not rotate relatively by arranging the plurality of grooves on the connecting flange, so that the circumferential fixation of the fan blade is ensured; the utility model discloses blade leading edge, blade trailing edge, blade root and apex are nylon and strengthen high fibre material, and this fan blade shakes the characteristic that the noise is low, anticorrosive, acid and alkali-resistance, specific gravity are light and the maintenance cost is low altogether.
Description
Technical Field
The utility model relates to a fan blade technical field, concretely relates to nylon fan blade.
Background
At present, a fan is an indispensable component in industries such as refrigeration or ventilation, and in the working process of the fan, airflow can flow along the suction surface and the pressure surface of a fan blade, air is discharged at the rear edge of the blade, airflow separation is generated, and the flow rate of the airflow along the suction surface of the fan blade is higher than that of the airflow on the pressure surface. The suction surface of the fan blade has an airflow boundary layer, and the airflow boundary layer continuously falls off from the rear edge of the fan blade along with the rotation of the fan to generate a large amount of airflow vortexes, so that the overall shape of the fan blade has a great influence on the air outlet effect. Most of fan blades in the prior art are arc plate blades extending along the radial direction, and the blades are not designed to be bent, so that the air outlet of the fan is uneven, and the energy efficiency of the fan is low. In view of the above drawbacks, it is desirable to design a nylon fan blade.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a nylon fan blade to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a nylon fan blade, includes blade leading edge, blade trailing edge, blade root and apex, blade leading edge, blade trailing edge, blade root and apex set up for integration, blade leading edge, blade trailing edge, blade root and apex are nylon reinforcement high fiber material, blade leading edge sets up with the blade trailing edge relatively, the blade root sets up with the apex relatively, the width of apex is greater than the width of blade root, is provided with the installation department on the blade root, the installation department is big-end-up's ladder cylindric.
Preferably, the inside step round hole that is provided with of installation department, the middle part of installation department is provided with outside bellied limit flange, limit flange's cross section is triangle-shaped, the bottom of installation department is provided with outside bellied connecting flange, be equipped with a plurality of recesses on connecting flange's the surface.
Preferably, an ascending section and a descending section are arranged between the blade root and the blade tip, the ascending section and the descending section extend in the axial direction, the ascending section is formed by extending the blade leading edge and the blade trailing edge from the blade root to the blade tip in the direction of the air outlet, and the ascending section extends to the peak value and then extends in the direction of the air inlet to form the descending section.
Compared with the prior art, the utility model relates to a nylon fan blade all has crooked change on direction of rotation and axial direction. The fan blade is in the rotating direction, and the front edge and the rear edge of the fan blade are bent and extend along the rotating direction from the blade root to the blade tip; the fan blade extends from the blade root to the blade tip to the trailing edge of the blade in the axial direction, and extends to the leading edge of the blade when the blade extends to the highest position. The design that the fan blades are bent in two directions can ensure that airflow is uniformly separated at the rear edge positions of the fan blades after the airflow passes through the surfaces of the fan blades, so that the air outlet of the fan is more uniform, the energy efficiency of a wind wheel can be effectively improved, the consumption is reduced, and the environment is protected. The front edge and the rear edge of the blade extend axially, so that the pressure distribution on the surface of the blade is more uniform, the flow loss is reduced, and the energy efficiency ratio of the wind wheel is improved; the fan blade is fixed on the fan hub, and the fan blade and the fan hub can not rotate relatively by arranging the plurality of grooves on the connecting flange, so that the circumferential fixation of the fan blade is ensured; the utility model discloses blade leading edge, blade trailing edge, blade root and apex are nylon and strengthen high fibre material, and this fan blade shakes the characteristic that the noise is low, anticorrosive, acid and alkali-resistance, specific gravity are light and the maintenance cost is low altogether.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:
fig. 1 is a schematic structural view of a nylon fan blade according to the present invention;
FIG. 2 is a side view of a nylon fan blade of the present invention;
fig. 3 is a sectional view a-a in fig. 1.
In the drawings:
1. a blade leading edge; 2. a blade trailing edge; 3. a blade root; 4. a blade tip; 5. a rising section; 6. a descending section; 7. an installation part; 8. step round holes; 9. a limiting flange; 10. a connecting flange; 11. and (4) a groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a nylon fan blade, includes blade leading edge 1, blade trailing edge 2, blade root 3 and apex 4, blade leading edge 1, blade trailing edge 2, blade root 3 and apex 4 set up for the integration, blade leading edge 1, blade trailing edge 2, blade root 3 and apex 4 are nylon and strengthen high fiber material, and this fan blade shakes the characteristic that the noise is low, anticorrosive, acid and alkali-resistance, specific gravity are light and the maintenance cost is low altogether, blade leading edge 1 sets up with blade trailing edge 2 relatively, blade root 3 sets up with apex 4 relatively, apex 4's width is greater than the width of blade root 3, is provided with installation department 7 on the blade root 3, installation department 7 is big-end-up's ladder cylindricly down.
In this embodiment the inside step round hole 8 that is provided with of installation department 7, the middle part of installation department 7 is provided with outside bellied limit flange 9, limit flange 9's cross section is triangle-shaped, the bottom of installation department 7 is provided with outside bellied connecting flange 10, be equipped with a plurality of recesses 11 on connecting flange 10's the surface. The connecting flange 10 is provided with a plurality of grooves, so that the fan blade and the fan hub cannot rotate relatively after being fixed on the fan hub, and the circumferential fixation of the fan blade is ensured.
In this embodiment, an ascending section 5 and a descending section 6 are disposed between the blade root 3 and the blade tip 4, the ascending section 5 and the descending section 6 extend in the axial direction, the ascending section 5 is formed by extending the blade leading edge 1 and the blade trailing edge 2 from the blade root 3 to the blade tip 4 in the direction of the air outlet, and the ascending section 5 extends to the peak value and then extends in the direction of the air inlet to form the descending section 6. The fan blades are arranged in a bent mode in the rotating direction and the axial direction, so that the fan blades are in a sickle shape, the sickle-shaped blades are bent in the rotating direction and the axial direction, air outlet of the fan can be more uniform, the energy efficiency of the wind wheel can be effectively improved, consumption is reduced, the environment is protected, and noise generated by the fan is reduced.
The cross sections of the fan blades at different diameters have different thicknesses, the cross section of the blade root 3 has the largest thickness, and the cross section of the blade tip 4 has the smallest thickness. The thickness of the section of the fan blade is gradually reduced along with the increase of the diameter of the wind wheel, and the reduction of the thickness of the section of the fan blade can ensure that the motor can reach enough rotating speed to enable the fan blade to rotate.
The fan blade rotates around the center of a fan hub, and in the rotating direction, a blade leading edge 1 and a blade trailing edge 2 extend from a blade root 3 to a blade tip 4 along the rotating direction, namely the whole blade is in a bent state in the rotating direction; in the axial direction, the blade leading edge 1 and the blade trailing edge 2 extend from the blade root 3 to the blade tip 4 to the air outlet direction first, and extend to the air inlet direction when extending to the highest. The fan blades are bent in the rotating direction and the axial direction, so that the air outlet of the fan is more uniform, the energy efficiency of the wind wheel can be effectively improved, the consumption is reduced, and the environment is protected.
The utility model provides a fan blade all has crooked change in direction of rotation and axial direction. The fan blade is characterized in that the fan blade is in a rotating direction, and the leading edge 1 and the trailing edge 2 of the fan blade extend in a bending way from the blade root 3 to the blade tip 4 along the rotating direction; in the axial direction of the fan blade, the blade leading edge 1 and the blade trailing edge 2 extend from the blade root 3 to the blade tip 4 to the blade trailing edge 2 firstly, and extend to the direction of the blade leading edge 1 when extending to the highest. The design that the fan blades are bent in two directions can ensure that airflow is uniformly separated at the rear edge positions of the fan blades after the airflow passes through the surfaces of the fan blades, so that the air outlet of the fan is more uniform, the energy efficiency of a wind wheel can be effectively improved, the consumption is reduced, and the environment is protected. The front edge 1 and the rear edge 2 of the blade extend axially, so that the pressure distribution on the surface of the blade is more uniform, the flow loss is reduced, and the energy efficiency ratio of the wind wheel is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a nylon fan blade, includes blade leading edge (1), blade trailing edge (2), blade root (3) and apex (4), its characterized in that: blade leading edge (1), blade trailing edge (2), blade root (3) and apex (4) set up for the integration, blade leading edge (1), blade trailing edge (2), blade root (3) and apex (4) are nylon reinforcement high fiber material, blade leading edge (1) sets up with blade trailing edge (2) relatively, blade root (3) sets up with apex (4) relatively, the width of apex (4) is greater than the width of blade root (3), is provided with installation department (7) on blade root (3), installation department (7) are big-end-up's ladder cylindricly down.
2. The nylon fan blade of claim 1, wherein: the utility model discloses a mounting portion, including installation department (7), installation department (7) inside is provided with step round hole (8), the middle part of installation department (7) is provided with outside bellied limit flange (9), the cross section of limit flange (9) is triangle-shaped, the bottom of installation department (7) is provided with outside bellied connecting flange (10), be equipped with a plurality of recesses (11) on the surface of connecting flange (10).
3. The nylon fan blade of claim 1, wherein: an ascending section (5) and a descending section (6) are arranged between the blade root (3) and the blade tip (4), the ascending section (5) and the descending section (6) extend in the axial direction, the ascending section (5) is formed by extending the blade leading edge (1) and the blade trailing edge (2) from the blade root (3) to the blade tip (4) to the direction of the air outlet, and the ascending section (5) extends to the peak value and then extends to the direction of the air inlet to form the descending section (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020351769.9U CN212028177U (en) | 2020-03-19 | 2020-03-19 | Nylon fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020351769.9U CN212028177U (en) | 2020-03-19 | 2020-03-19 | Nylon fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212028177U true CN212028177U (en) | 2020-11-27 |
Family
ID=73483660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020351769.9U Active CN212028177U (en) | 2020-03-19 | 2020-03-19 | Nylon fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212028177U (en) |
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2020
- 2020-03-19 CN CN202020351769.9U patent/CN212028177U/en active Active
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