CN214404067U - Steady flow fan blade - Google Patents
Steady flow fan blade Download PDFInfo
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- CN214404067U CN214404067U CN202120415211.7U CN202120415211U CN214404067U CN 214404067 U CN214404067 U CN 214404067U CN 202120415211 U CN202120415211 U CN 202120415211U CN 214404067 U CN214404067 U CN 214404067U
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- blade
- blades
- wind breaking
- rib
- wind
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Abstract
The utility model discloses a stationary flow flabellum, including motor shell and blade, a plurality of blades are evenly fixed to be located on the motor shell circumference lateral wall, be formed with an at least broken wind rib on the at least one side blade surface of blade, broken wind rib is at least one in protruding form broken wind rib and the sunken form broken wind rib, the utility model discloses a blade surface at fan flabellum sets up protruding form broken wind rib or sunken form broken wind rib, reduces blade surface air current and peels off the shear force for blade surface air current forms the laminar flow state of rule, avoids the air current to produce the torrent on the blade surface, helps reducing unbalance amount, noise reduction, improves the silence when the rotational speed realizes the fan operation, has improved fan work efficiency.
Description
Technical Field
The utility model relates to a fan, in particular to stationary flow flabellum.
Background
In the existing axial flow fan structure, blades rotate around a central shaft, and wind is sucked from an air inlet and flows out from an air outlet. During the intake and outflow of wind, the airflow interacts with the blades to produce noise. In order to reduce noise, the tail end of the blade in the existing fan is made into an arc shape, so that the airflow direction is improved, and the turbulence sound of the incoming flow is reduced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model provides a stationary flow flabellum, this stationary flow flabellum can make the air current on flabellum blade surface form the laminar flow, and the fan operation in-process noise is little.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: the utility model provides a stationary flow flabellum, includes motor shell and blade, and a plurality of blades are evenly fixed to be located on the motor shell circumference lateral wall, be formed with at least one broken wind rib on the at least one side blade surface of blade, broken wind rib is protruding form broken wind rib and sunken form broken wind rib in at least one kind.
As a further improvement of the present invention, the wind breaking rib is a strip-shaped structure extending along the rotation direction of the blade.
As a further improvement of the present invention, the cross section of the wind breaking rib is one of circular arc, V-shaped or trapezoidal structure, and the wind breaking rib is a cambered surface or an inclined surface which is gradually close to the surface of the blade along the two ends of the wind breaking rib in the length direction.
As a further improvement of the utility model, the wind breaking rib is transitionally connected with the blade surface of the blade through a fillet.
As a further improvement of the utility model, the both ends of the length direction of the convex wind breaking rib and the concave wind breaking rib do not extend out of the outer side of the edge of the blade.
As a further improvement of the present invention, the protruding wind-breaking rib extends out of the outer side of the blade edge along at least one end of the length direction thereof for a predetermined distance.
As a further improvement of the present invention, the blades are formed with the protruding wind-breaking ribs along the one-to-one correspondence between the two sides of the motor housing, and the protruding wind-breaking ribs located on the two sides of the blades are butted together with the end portion extending out of the edge of the blades, and the portions of the protruding wind-breaking ribs on the two sides of the blades butted together form the pointed structure wrapped on the outer side of the blades.
As a further improvement of the utility model, the wind breaking ribs are of arc structures which are concentric with the motor shell and arranged at intervals.
As a further improvement of the present invention, the blade is inclined and extended in a spiral shape outside the motor case.
As the utility model discloses a further improvement, the thickness at blade along its direction of rotation both ends is less than middle thickness, and both sides blade surface is the convex arc curved surface about the blade, and the tail end of blade dorsad motor shell is the convex arc curved surface, and the blade is concave arc curve along its direction of rotation windward side, and the blade is convex arc curve along its direction of rotation leeward side.
The utility model has the advantages that: the utility model discloses a set up the broken wind rib of protruding form or sunken form on the blade surface of fan flabellum, reduce blade surface air current and peel off the shear force for blade surface air current forms the laminar flow state of rule, avoids the air current to produce the torrent on the blade surface, helps reducing unbalance amount, noise reduction, improves the silence when the rotational speed realizes the fan operation, has improved fan work efficiency.
Drawings
Fig. 1 is a front view of a first structural principle of the present invention;
FIG. 2 is a front view of a second structural principle of the present invention;
FIG. 3 is a front view of a third structural principle of the present invention;
fig. 4 is a schematic plan view of a third structure of the present invention.
Detailed Description
Example (b): the utility model provides a stationary flow flabellum, includes motor shell 1 and blade 2, and a plurality of blades 2 are even fixed to be located on 1 circumference lateral wall of motor shell, be formed with at least one broken wind rib on the at least one side blade surface of blade 2, broken wind rib is protruding form broken wind rib 3 and sunken form broken wind rib 4 in at least one. The wind breaking ribs are arranged on the blade surfaces of the blades 2, so that airflow flowing at high speed on the surfaces of the blades 2 forms laminar flow, turbulence is avoided, airflow stripping shear force can be reduced, unbalance amount is reduced, noise is reduced, and rotating speed is increased.
The wind breaking ribs are of strip-shaped structures extending along the rotation direction of the blades 2. The length that rectangular shape structure can prolong the production laminar flow through broken wind rib for blade 2 surface air current all is the laminar flow, can not appear mutual interference.
The cross section of the wind breaking rib is in one of arc, V-shaped or trapezoidal structures, and the two ends of the wind breaking rib along the length direction are arc surfaces or inclined surfaces which gradually approach the surface of the blade 2. Through the arc-shaped or V-shaped cross section, the resistance of the wind breaking ribs on the airflow can be reduced, and the laminar flow of the airflow on the surface of the blade 2 can be quickly formed.
The wind breaking ribs are in transition connection with the blade surfaces of the blades 2 through round corners. The fillet is smooth, avoids producing the resistance to the air current.
The two ends of the protruding wind breaking ribs 3 and the two ends of the recessed wind breaking ribs 4 in the length direction do not extend out of the outer sides of the edges of the blades 2. The wind breaking ribs are completely positioned on the surface of the blade 2 and can be aligned with the edge of the blade 2 or have a set distance with the edge of the blade 2, airflow firstly enters the surface of the blade 2 and then is divided by the wind breaking ribs, so that the airflow on the surface of the blade 2 forms laminar flow, and turbulent flow is avoided.
At least one end of the convex wind breaking rib 3 along the length direction thereof extends out of the outer side of the edge of the blade 2 by a set distance. The convex wind breaking ribs 3 extend out of the outer sides of the edges of the blades 2, airflow is divided by the wind breaking ribs before entering the surfaces of the blades 2, and the airflow entering the surfaces of the blades 2 forms stable laminar flow.
The blades 2 are provided with convex wind breaking ribs 3 corresponding to two axial sides of the motor shell 1 one by one, the ends of the convex wind breaking ribs 3 positioned on two sides of the blades 2, extending out of the edges of the blades 2, are butted together, and the butted parts of the convex wind breaking ribs 3 on two sides of the blades 2 form a pointed structure 5 coated on the outer side of the blades 2. The two sides of the blade 2 are correspondingly provided with the convex wind breaking ribs 3, the end parts of the convex wind breaking ribs 3 extending out of the edge outer side of the blade 2 are butted to form a whole, the two ends of the wind breaking ribs can extend out of the edge outer side of the blade 2, the quite rich wind positioned at the two sides of the blade 2 just form a shuttle-shaped structure coated on the outer side of the blade 2, the wind breaking is realized, the choked flow of the air flow is reduced, the stable high-speed flow of the air flow in a laminar flow mode is realized, the wind breaking ribs can also form a structure extending out of the edge outer side of the blade 2 at one end, and the other end is contracted in the blade 2.
The wind breaking ribs are of arc structures which are concentric with the motor shell 1 and are arranged at intervals. Avoid producing mutual interference in the air current flow process.
The blades 2 extend obliquely in a spiral shape outside the motor case 1.
The thickness at blade 2 along its direction of rotation both ends is less than middle thickness, and both sides blade surface is convex arc curved surface about blade 2, and the tail end of blade 2 dorsad motor shell 1 is convex arc curved surface, and blade 2 is concave arc curve along its direction of rotation windward side, and blade 2 is convex arc curve along its direction of rotation leeward side.
The thickness of the two sides of the blade 2 in the rotating direction is small, so that smooth air flow in and out is facilitated, the thickness of the middle of the blade 2 is large, the strength of the blade 2 is facilitated to be improved, the whole blade 2 is of an arc-shaped structure in all directions, smooth air flow is facilitated, resistance to the air flow is avoided, turbulence is reduced, and noise is reduced.
The axial flow fan blade is composed of at least one blade 2, at least one convex rib or groove is arranged on the blade surface of each blade 2, and the blade surface is provided with the convex rib or groove which is the same as the rotation direction, so that the guiding of air flow is realized, and a noise reduction structure is formed.
The wind breaking ribs of each fan blade can be made into the same shape or different shapes (for example, the shapes of the convex wind breaking ribs 3 or the concave wind breaking ribs 4 on each blade 2 are selected to be the same or different, each blade 2 can also be formed by combining the convex wind breaking ribs 3 or the concave wind breaking ribs 4, or different types of wind breaking ribs are selected on different blades 2, if the convex wind breaking ribs 3 are selected on the blades 2, the concave wind breaking ribs 4 are selected on some blades 2, or the convex wind breaking ribs 3 are selected on one surface of one blade 2 and the concave wind breaking ribs 4 are selected on the other surface of the other blade 2, and the shapes and the sizes of the convex ribs and the shapes and the sizes of the concave grooves can also be the same or different), the noise reduction effect is achieved by decomposing the audio generated during rotation through calculation, the wind breaking ribs of each fan blade are made into different structures, and the geometric shapes of the wind breaking ribs are designed through mass center calculation, the dynamic balance effect when the blades 2 rotate is achieved.
Claims (10)
1. The utility model provides a stationary flow flabellum, includes motor shell (1) and blade (2), on motor shell circumference lateral wall, its characterized in that was located to a plurality of blades are even fixed: at least one wind breaking rib is formed on the surface of at least one side of the blade, and the wind breaking rib is at least one of a convex wind breaking rib (3) and a concave wind breaking rib (4).
2. The flow stabilizing fan blade of claim 1, wherein: the wind breaking ribs are of strip-shaped structures extending along the rotation direction of the blades.
3. The flow stabilizing fan blade of claim 2, wherein: the cross section of the wind breaking rib is in one of circular arc, V-shaped or trapezoidal structures, and the two ends of the wind breaking rib along the length direction are arc surfaces or inclined surfaces gradually approaching the surfaces of the blades.
4. The flow stabilizing fan blade of claim 3, wherein: the wind breaking ribs are in transition connection with the blade surfaces of the blades through round corners.
5. The flow stabilizing fan blade of claim 2, wherein: the two ends of the protruding wind breaking ribs and the two ends of the recessed wind breaking ribs in the length direction do not extend out of the outer sides of the edges of the blades.
6. The flow stabilizing fan blade of claim 2, wherein: at least one end of the protruding wind breaking rib along the length direction of the protruding wind breaking rib extends out of the outer side of the edge of the blade for a set distance.
7. The flow stabilizing fan blade of claim 6, wherein: the blades are provided with protruding wind breaking ribs in one-to-one correspondence along the two axial sides of the motor shell, the end parts, extending out of the outer sides of the edges of the blades, of the protruding wind breaking ribs on the two sides of the blades are in butt joint, and the butt joint parts of the protruding wind breaking ribs on the two sides of the blades form a pointed structure (5) covering the outer sides of the blades.
8. The flow stabilizing fan blade of claim 1, wherein: the wind breaking ribs are arc structures which are concentric with the motor shell and are arranged at intervals.
9. The flow stabilizing fan blade of claim 1, wherein: the blades extend obliquely in a spiral shape outside the motor case.
10. The flow stabilizing fan blade of claim 1, wherein: the thickness at both ends is less than middle thickness along its direction of rotation of blade, and both sides blade surface is convex arc curved surface about the blade, and the tail end that the blade dorsad motor shell is convex arc curved surface, and the blade is concave arc curve along its direction of rotation windward side, and the blade is convex arc curve along its direction of rotation leeward side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120415211.7U CN214404067U (en) | 2021-02-25 | 2021-02-25 | Steady flow fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120415211.7U CN214404067U (en) | 2021-02-25 | 2021-02-25 | Steady flow fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214404067U true CN214404067U (en) | 2021-10-15 |
Family
ID=78026471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120415211.7U Active CN214404067U (en) | 2021-02-25 | 2021-02-25 | Steady flow fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214404067U (en) |
-
2021
- 2021-02-25 CN CN202120415211.7U patent/CN214404067U/en active Active
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