CN217842116U - Fan blade and electric fan - Google Patents
Fan blade and electric fan Download PDFInfo
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- CN217842116U CN217842116U CN202222265384.2U CN202222265384U CN217842116U CN 217842116 U CN217842116 U CN 217842116U CN 202222265384 U CN202222265384 U CN 202222265384U CN 217842116 U CN217842116 U CN 217842116U
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Abstract
The utility model relates to a technical field of electric fan provides a flabellum and electric fan, include: the base is used for being installed on the rotating shaft and rotating around a preset straight line, and the blades are arranged on the base; the front surface of the blade is provided with a convex rib; on a projection surface perpendicular to the preset straight line, the projection of the convex rib on the projection surface is in a strip shape, and the projection of the strip-shaped convex rib extends along the circumferential direction of the preset straight line.
Description
Technical Field
The utility model belongs to the technical field of the electric fan, more specifically say, relate to a flabellum and electric fan.
Background
Electric fans are very commonly used in modern life. Electric fans can be seen in: (Chinese utility patent; publication No. CN207795681U; subject name: axial flow fan blade, axial flow fan blade assembly, axial flow fan air duct assembly; publication No. 2018-08-31), the electric fan generally has a blade which generates an air flow in a process of rotating along with a rotating shaft (see (Chinese patent; publication No. CN108869357A; subject name: fan; publication No. 2021-07-27)), the first motor has a first rotating shaft on which a first blade (first blade: blade) is disposed, the first rotating shaft rotates to drive the first blade to rotate) (about a blade generates an air flow in a process of rotating along with the rotating shaft: a front surface of the blade pushes an air flow to flow in a rotating process (about a "front surface" of the blade: when the blade rotates to generate an air flow, a surface of the blade facing downstream of the air flow is a front surface). Part of the air flow flows around the rotating shaft along with the fan blades in the rotating process of the rotating fan blades, and part of the air flow which surrounds the rotating shaft and flows along the front surfaces of the fan blades flows to the radial outer side of the rotating shaft under the action of centrifugal force, so that the loss of the air flow is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flabellum to solve the part that exists among the prior art and encircle the pivot and flow to the radial outside of pivot under the effect of centrifugal force along the air current that the flabellum front surface flows in order to cause the technical problem of the loss of air current.
In order to achieve the above object, the utility model adopts the following technical scheme: providing a fan blade comprising: the base is used for being arranged on the rotating shaft and rotating around a preset straight line, and the blades are arranged on the base; the front surface of the blade is provided with a convex rib; on a projection surface perpendicular to the preset straight line, the projection of the convex rib on the projection surface is in a strip shape, and the projection of the strip-shaped convex rib extends along the circumferential direction of the preset straight line.
Further, the rib has an inner side surface facing the predetermined straight line, and a distance from the predetermined straight line is the same at any point on the inner side surface.
Further, the rib has an outer side surface disposed opposite to the inner side surface, and a distance from any point on the outer side surface to the predetermined straight line is the same.
Further, the surface of the bead is smoothly connected with the front surface.
Furthermore, the convex rib and the blade are integrally formed, and/or the blade and the seat body are integrally formed.
Furthermore, the number of the convex ribs is multiple, and the number of the blades is multiple; the convex ribs are respectively arranged on the blades.
Furthermore, a plurality of convex ribs are respectively arranged on each blade; the plurality of convex ribs on each blade correspond to each other one by one, and the distances between the corresponding plurality of convex ribs and the preset straight line are the same.
Further, a plurality of ribs are arranged on each blade at intervals in the radial direction of the predetermined straight line.
Further, in the radial direction of the predetermined straight line, the distance between any adjacent ribs is a predetermined distance.
The utility model also provides an electric fan, include: the fan comprises a shell, a motor arranged on the shell and fan blades; the motor is provided with a rotating shaft rotating around a preset straight line, and the base body is fixed on the rotating shaft.
The utility model provides a beneficial effect of flabellum lies in: compared with the prior art, the base body of the fan blade provided by the utility model can be arranged on the rotating shaft and rotate around the preset straight line, and the fan blade can drive the air to flow in the rotating process to generate air flow; the front surface of the blade is provided with a convex rib; in the projection direction along the preset straight line, a plane perpendicular to the preset straight line is set as a projection plane, the projection of the convex rib on the projection plane is in a strip shape, the projection of the strip-shaped convex rib on the projection plane extends in the circumferential direction of the preset straight line, when the blade rotates around the preset straight line, the blade can push part of the airflow to flow around the preset straight line, part of the airflow flowing around the rotating shaft flows to the radial outer side of the preset straight line under the action of centrifugal force, and part of the airflow flowing along the front surface and to the radial outer side of the preset straight line is blocked by the convex rib, so that the airflow flowing to the radial outer side of the preset straight line and losing to the outer side of the blade is reduced. In addition, because the projection of the convex rib on the projection surface is strip-shaped, and the strip-shaped projection of the convex rib on the projection surface extends along the circumferential direction of the preset straight line, when the blade rotates around the preset straight line, the convex rib is not easy to push the airflow to flow in the radial direction of the preset straight line.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic first front view of a fan blade according to an embodiment of the present invention;
FIG. 2 isbase:Sub>A schematic sectional view taken along line A-A of FIG. 1;
fig. 3 is a schematic perspective view of a fan blade according to an embodiment of the present invention;
fig. 4 is a schematic front view of a fan blade according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of B-B in fig. 4.
Wherein, in the figures, the various reference numbers:
11-a seat body; 12-a blade; 121-convex ribs; 1211-inner surface; 1212-outer lateral surface; 122-front surface; 13-a predetermined straight line; 2, a motor; 21-a rotating shaft; f-the direction of the gas flow.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In this application, "plurality" means two or more unless specifically limited otherwise.
In this application, the words "first" and "second" are used for descriptive purposes only; neither "first" nor "second" is to be understood as the number of indicated technical features; neither "first" nor "second" is to be understood as implying the number of indicated technical features; neither "first" nor "second" should be understood to imply the number of technical features indicated. In addition, a feature defined as a "first" may explicitly or implicitly include one or more of that feature; a feature defined as "second" may explicitly or implicitly include one or more of that feature.
In this application, when an element is referred to as being "secured to," "disposed on" or "disposed on" another element, it can be directly on the other element or it can be indirectly on the other element. When an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or indirectly connected to the other element.
In this application, the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, but not to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
In this application, "/" indicates an OR meaning, e.g., A/B may indicate A or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. Wherein, A and B can be singular or plural respectively.
Please refer to fig. 1 to fig. 3, which illustrate the fan blade of the present invention. The fan blade includes: a housing 11 for being mounted on a rotation shaft 21 and rotating about a predetermined straight line 13 and a blade 12 provided on the housing 11; the front surface 122 of the blade 12 is provided with a rib 121; on a projection plane perpendicular to the predetermined straight line 13, a projection of the rib 121 on the projection plane is in a stripe shape, and the projection of the stripe-shaped rib 121 extends along a circumferential direction of the predetermined straight line 13.
Thus, the housing 11 can be mounted on a rotating shaft 21 (the rotating shaft 21: e.g. the rotating shaft 21 of the motor 2) and rotate around a predetermined straight line 13 (in one embodiment, the predetermined straight line 13 is the axis of the rotating shaft 21), and the blades 12 can drive a gas (e.g. air) to flow during the rotation process to generate an air flow; the front surface 122 of the blade 12 (with respect to "front surface 122" of the blade 12: the surface of the blade 12 facing downstream in the flow of gas as the blade 12 rotates is the front surface 122. That is, the surface of the blade 12 that pushes the gas to flow to generate the flow of gas as the blade 12 rotates is the "front surface 122" of the blade 12. In one embodiment, the flow of gas may refer to the flow direction f in fig. 2) is provided with ribs 121; in the projection direction along the predetermined straight line 13, a plane perpendicular to the predetermined straight line 13 is set as a projection plane, the projection of the rib 121 on the projection plane is in a strip shape, and the projection of the strip-shaped rib 121 on the projection plane extends in the circumferential direction of the predetermined straight line 13, when the blade 12 rotates around the predetermined straight line 13, the blade 12 pushes part of the airflow to flow around the predetermined straight line 13, part of the airflow flowing around the rotating shaft 21 flows to the radial outer side of the predetermined straight line 13 under the action of centrifugal force, and part of the airflow flowing along the front surface 122 and to the radial outer side of the predetermined straight line 13 is blocked by the rib 121, so that the airflow flowing to the radial outer side of the predetermined straight line 13 and losing to the outer side of the blade 12 is reduced. In addition, since the projection of the rib 121 on the projection surface is in a strip shape, and the strip-shaped projection of the rib 121 on the projection surface extends along the circumferential direction of the predetermined straight line 13, when the blade 12 rotates around the predetermined straight line 13, the rib 121 does not easily push the airflow to flow in the radial direction of the predetermined straight line 13.
Wherein, with respect to the circumferential direction of the predetermined straight line 13: around the direction of the predetermined straight line 13. Such as: assuming that the projection plane has a circle, assuming that any point on the circle is a reference point, the direction tangent to the circle at the reference point is: the circumferential direction at the reference point with respect to the predetermined straight line 13.
In one embodiment, the majority of the airflow generated by the blades 12 flows in the airflow direction F. In one embodiment, the air flow direction F extends along the extension of the predetermined straight line.
Further, referring to fig. 1 to 3, as an embodiment of the fan blade of the present invention, the rib 121 has an inner side surface 1211 facing the predetermined straight line 13, and a distance from any point on the inner side surface 1211 to the predetermined straight line 13 is the same. In this manner, when the rib 121 rotates about the predetermined straight line 13 along with the blade 12, the inner side surface 1211 of the rib 121 does not easily generate the airflow flowing in the radial direction of the predetermined straight line 13.
In one embodiment, the bead 121 has an outer surface 1212 opposite the inner surface 1211, and any point on the outer surface 1212 is spaced the same distance from the predetermined line 13. In this way, when the rib 121 rotates around the predetermined straight line 13 along with the blade 12, the outer side surface 1212 of the rib 121 does not easily generate the airflow flowing in the radial direction of the predetermined straight line 13.
In one embodiment, the projection of the inner surface 1211 onto the projection plane is one side edge of the projection of the rib 121 in the form of a bar. In one embodiment, the projection of the outer side surface 1212 in the projection plane is the other side edge of the bar-shaped projection of the rib 121.
Further, referring to fig. 1 to 3, as an embodiment of the fan blade of the present invention, the surface of the rib 121 is smoothly connected to the front surface 122. In this way, airflow is facilitated to flow along the front surface 122 of the fan blade onto the surface of the rib 121, or airflow is facilitated to flow along the surface of the rib 121 onto the front surface 122 of the fan blade.
Further, referring to fig. 1 to 3, as an embodiment of the fan blade of the present invention, the rib 121 and the blade 12 are an integral molding. In this way, the rib 121 and the blade 12 are more firmly fixed.
In one embodiment, the blade 12 and the housing 11 are integrally formed. Therefore, the fan blades and the base body 11 are firmer.
Further, referring to fig. 1 to 3, as a specific embodiment of the fan blade provided by the present invention, the number of the ribs 121 is plural, and the number of the blades 12 is plural; each blade 12 is provided with a rib 121. In this way, the number of the blades 12 is plural, each blade 12 is provided with the rib 121, and the airflow flowing in the radial direction of the predetermined straight line 13 is blocked by the rib 121 on each blade 12, so that the airflow flowing radially outward of the predetermined straight line 13 is reduced.
Further, referring to fig. 1 to 3, as a specific embodiment of the fan blade of the present invention, each blade 12 is provided with a plurality of ribs 121; the plurality of ribs 121 on each blade 12 correspond to each other one by one, and the distances from the predetermined straight line 13 to the corresponding plurality of ribs 121 are the same. So, to two arbitrary blades 12, a plurality of protruding muscle 121 on one blade 12 respectively with a plurality of protruding muscle 121 on another blade 12 between the one-to-one correspondence, to protruding muscle 121 on two arbitrary corresponding blades 12, two corresponding protruding muscle 121 is the same from predetermined straight line 13's distance respectively, the protruding muscle 121 that is convenient for correspond blocks the air current respectively on same predetermined straight line 13 radial distance (protruding muscle 121 blocks partial air current at the flow of predetermined straight line 13 radial direction).
Further, referring to fig. 1 to 3, as an embodiment of the fan blade of the present invention, a plurality of ribs 121 on each blade 12 are respectively disposed at intervals in the radial direction of the predetermined straight line 13. In this way, the airflow flowing in the radial direction of the predetermined straight line 13 is blocked by the plurality of ribs 121, and the airflow is reduced from flowing radially outward toward the predetermined straight line 13.
Further, referring to fig. 1 to 3, as an embodiment of the fan blade of the present invention, in the radial direction of the predetermined straight line 13, the distance between any adjacent ribs 121 is a predetermined distance.
Referring to fig. 1 to 3, the present invention further provides an electric fan, including: the fan comprises a shell, a motor 2 arranged on the shell, and the fan blades; the motor 2 has a rotation shaft 21 rotating around a predetermined straight line 13, and the holder body 11 is fixed to the rotation shaft 21. Thus, the motor 2 drives the rotating shaft 21 to rotate, the axis of the rotating shaft 21 coincides with the predetermined straight line 13, and the rotating shaft 21 drives the fan blades to rotate around the predetermined straight line 13; due to the above-mentioned fan blades, the base 11 can be mounted on the rotating shaft 21 (the rotating shaft 21: e.g. the rotating shaft 21 of the motor 2) and rotate around the predetermined straight line 13 (in one embodiment, the predetermined straight line 13 is the axis of the rotating shaft 21), and the blades 12 can drive the gas (gas: e.g. air) to flow during the rotation process to generate the air flow; the front surface 122 of the blade 12 (with respect to "front surface 122" of the blade 12: the surface of the blade 12 facing downstream in the flow of gas as the blade 12 rotates is the front surface 122. That is, the surface of the blade 12 that pushes the gas to flow to generate the flow of gas as the blade 12 rotates is the "front surface 122" of the blade 12. In one embodiment, the flow of gas may refer to the flow direction f in fig. 2) is provided with ribs 121; in the projection direction along the predetermined straight line 13, a plane perpendicular to the predetermined straight line 13 is set as a projection plane, the projection of the rib 121 on the projection plane is in a strip shape, and the projection of the strip-shaped rib 121 on the projection plane extends in the circumferential direction of the predetermined straight line 13, when the blade 12 rotates around the predetermined straight line 13, the blade 12 pushes part of the airflow to flow around the predetermined straight line 13, part of the airflow flowing around the rotating shaft 21 flows to the radial outer side of the predetermined straight line 13 under the action of centrifugal force, and part of the airflow flowing along the front surface 122 and to the radial outer side of the predetermined straight line 13 is blocked by the rib 121, so that the airflow flowing to the radial outer side of the predetermined straight line 13 and losing to the outer side of the blade 12 is reduced. In addition, since the projection of the rib 121 on the projection surface is in a strip shape, and the strip-shaped projection of the rib 121 on the projection surface extends along the circumferential direction of the predetermined straight line 13, when the blade 12 rotates around the predetermined straight line 13, the rib 121 does not easily push the airflow to flow in the radial direction of the predetermined straight line 13.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A fan blade, comprising: the base is used for being arranged on the rotating shaft and rotating around a preset straight line, and the blades are arranged on the base; the front surface of the blade is provided with a convex rib; on a projection surface perpendicular to the preset straight line, the projection of the convex rib on the projection surface is in a strip shape, and the projection of the strip-shaped convex rib extends along the circumferential direction of the preset straight line.
2. The fan blade according to claim 1, wherein the rib has an inner side surface facing the predetermined straight line, and a distance from the predetermined straight line is the same at any point on the inner side surface.
3. The fan blade according to claim 2, wherein said rib has an outer side surface disposed opposite to said inner side surface, and a distance from said predetermined straight line is the same at any point on said outer side surface.
4. The fan blade of claim 1 wherein said rib surface is smoothly connected to said front surface.
5. The fan blade according to claim 1, wherein the rib is integrally formed with the blade, and/or the blade and the base are integrally formed.
6. The fan blade according to any one of claims 1 to 5, wherein said ribs are plural in number, and said blades are plural in number; the convex ribs are arranged on the blades respectively.
7. The fan blade according to claim 6, wherein a plurality of the ribs are respectively disposed on each of the blades; the plurality of convex ribs on each blade correspond to each other one by one, and the distances between the corresponding plurality of convex ribs and the preset straight line are the same.
8. The fan blade according to claim 7, wherein a plurality of the ribs are provided on each of the blades at intervals in a radial direction of the predetermined straight line.
9. The fan blade according to claim 8, wherein a distance between any adjacent ribs in a radial direction of said predetermined straight line is a predetermined distance.
10. Electric fan, its characterized in that includes: a housing, a motor disposed on the housing, and a fan blade according to any of claims 1 to 9; the motor is provided with a rotating shaft rotating around a preset straight line, and the base body is fixed on the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222265384.2U CN217842116U (en) | 2022-08-29 | 2022-08-29 | Fan blade and electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222265384.2U CN217842116U (en) | 2022-08-29 | 2022-08-29 | Fan blade and electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217842116U true CN217842116U (en) | 2022-11-18 |
Family
ID=84015577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222265384.2U Active CN217842116U (en) | 2022-08-29 | 2022-08-29 | Fan blade and electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217842116U (en) |
-
2022
- 2022-08-29 CN CN202222265384.2U patent/CN217842116U/en active Active
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