CN212177502U - Fan blade structure for industrial fan - Google Patents
Fan blade structure for industrial fan Download PDFInfo
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- CN212177502U CN212177502U CN201922377537.0U CN201922377537U CN212177502U CN 212177502 U CN212177502 U CN 212177502U CN 201922377537 U CN201922377537 U CN 201922377537U CN 212177502 U CN212177502 U CN 212177502U
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Abstract
The utility model discloses a flabellum structure for industrial fan, characteristics are including upper surface and lower plane, the first side downwarping extension of upper surface is provided with first curved surface, the second side downwarping extension of upper surface is provided with the second curved surface, the first side upwarping extension of lower plane is provided with the third curved surface, the second side upwarping extension of lower plane is provided with the fourth curved surface, be provided with first transition curved surface between the tip of first curved surface and the tip of third curved surface, be provided with second transition curved surface between the tip of second curved surface and the tip of fourth curved surface, upper surface, lower plane, first curved surface, the second curved surface, the third curved surface, the fourth curved surface, first transition curved surface and second transition curved surface enclose into the fan body; the advantage is under equal angle, compares traditional flabellum structure intrados and is the linear type basically, and novel flabellum intrados is the arc, and the air current that can cut, take away is more, means under the same conditions, and the fan that uses novel flabellum is bigger than the fan wind that uses traditional flabellum, and the noise of production is also littleer.
Description
Technical Field
The utility model relates to a flabellum structure for industrial fan.
Background
The industrial fan is a common industrial machine which is widely applied to high and large spaces such as industrial factory buildings, logistics storage, waiting rooms, exhibition halls, gymnasiums, super-business rooms and the like, and is used for ventilating the spaces and cooling personnel; the inner arc surface of the traditional fan blade structure is basically linear (as shown in figure 1), the air quantity is small, and the noise is large.
Disclosure of Invention
The utility model aims to solve the technical problem that a flabellum structure for industrial fan that the amount of wind is big, the noise is little is provided.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides an industry flabellum structure for fan, includes curved surface and lower plane, the first side downwarping extension of last curved surface be provided with first curved surface, the second side downwarping extension of last curved surface be provided with the second curved surface, the first side downwarping extension of lower plane be provided with the third curved surface, the second side downwarping extension of lower plane be provided with the fourth curved surface, the tip of first curved surface with the tip of third curved surface between be provided with first transition curved surface, the tip of second curved surface with the tip of fourth curved surface between be provided with second transition curved surface, last curved surface the lower plane first curved surface the second curved surface third curved surface fourth curved surface, first transition curved surface and second transition curved surface enclose into the fan body.
The utility model discloses a further preferred scheme does: the fan body is internally provided with a reinforcing rib.
The utility model discloses a further preferred scheme does: the outside of the fan body is coated with a decorative sleeve.
The utility model discloses a further preferred scheme does: the degree of an included angle between a connecting line between the lower plane and the second transition curved surface and the horizontal plane is 14-24 degrees.
The utility model discloses a further preferred scheme does: the ratio of the length of the first curved surface to the height thereof is 2: 1, the ratio of the length of the third curved surface to the height thereof is 2: 1.
the utility model discloses a further preferred scheme does: the ratio of the length of the second curved surface to the height thereof is 3: 2, the ratio of the length of the fourth curved surface to the height thereof is 2: 1.
the utility model discloses a further preferred scheme does: the wall thickness of the fan body is 1.6 mm.
Compared with the prior art, the utility model has the advantages of under equal angle, it is the linear type basically to compare traditional flabellum structure intrados, and novel flabellum intrados is the arc, and the air current that can cut, take away is more, means under the same conditions, and the fan that uses novel flabellum is bigger than the fan wind that uses traditional flabellum, and the noise of production is also littleer.
Drawings
The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.
FIG. 1 is a schematic view of the wind direction when the conventional fan blades are used
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the direction of wind when the fan blades are installed at an optimal angle;
FIG. 4 is a schematic view of the structure of the present invention with a small blade mounting angle;
fig. 5 is the schematic structural view of the fan blade of the present invention with a larger installation angle.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.
It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.
As shown in fig. 1, the blade structure of the existing industrial fan is a substantially linear inner arc surface, when the blade structure is mounted on a fan base, the blade and a horizontal plane form an included angle of 19 degrees, the blade can cut and take away less air flow, and the air can run towards the side, a small amount of air flows towards the right below the fan, the air volume is small, and the noise is large.
As shown in fig. 2, a fan blade structure for an industrial fan is provided, which includes an upper curved surface 1 and a lower flat surface 2, wherein a first side of the upper curved surface 1 is bent downward and extended to form a first curved surface 11, a second side of the upper curved surface 1 is bent downward and extended to form a second curved surface 12, a first side of the lower flat surface 2 is bent upward and extended to form a third curved surface 21, a second side of the lower flat surface 2 is bent upward and extended to form a fourth curved surface 22, a first transition curved surface 3 is arranged between an end of the first curved surface 11 and an end of the third curved surface 21, a second transition curved surface 4 is arranged between an end of the second curved surface 21 and an end of the fourth curved surface 22, the upper curved surface 1, the lower flat surface 2, the first curved surface 11, the second curved surface 12, the third curved surface 21, the fourth curved surface 22, the first transition curved surface 3 and the second transition curved surface 4 enclose a fan body 8, a reinforcing rib 5 is arranged in the fan body 8, the degree of the included angle between the connecting line between the lower plane 2 and the second transition curved surface 4 and the horizontal plane is 19 degrees, and the ratio of the length of the first curved surface 11 to the height thereof is 2: 1, the ratio of the length of the third curved surface 21 to the height thereof is 2: 1, the ratio of the length of the second curved surface 12 to the height thereof is 3: 2, the ratio of the length of the fourth curved surface 22 to the height thereof is 2: 1, the wall thickness of the fan body 8 is 1.6 mm.
As shown in fig. 3, the degree of the included angle between the horizontal plane and the connecting line between the lower plane 2 and the second transition curved surface 4 is 19 °, compared with the conventional linear fan blade, the inner curved surface of the novel fan blade is arc-shaped, and more air flows can be cut and taken away. Meaning that the fan using the new blade is more windy than the fan using the conventional blade under the same conditions.
As shown in fig. 4, the degree of the included angle between the horizontal plane and the connecting line between the lower plane 2 and the second transition curved surface 4 is less than 14 °, specifically 8 °, the air flow which can be cut and taken away by the fan blade is reduced, and the air volume of the fan is reduced.
As shown in fig. 5, the degree of the included angle between the horizontal plane and the connecting line between the lower plane 2 and the second transition curved surface 4 is greater than 24 °, specifically 28 °, the airflow forms a vortex at the end of the fan blade, which disturbs the normal airflow, makes the airflow turbulent and collides with each other, finally makes the effective airflow reduce, the fan air volume reduce, and the vortex can generate noise, so that the whole noise of the fan becomes large.
The following table is a comparison table of air volume and noise for the above 4 fan blade structures under the same conditions (same large palm magnetic suspension fan, same 4.2 m diameter fan, same 70 r/min, same field and environment):
| conventional fan blade at 19 ° | Novel fan blade with 19 degree | Novel fan blade with 8 degree | New fan blade 28 degree | |
| Air quantity CMM | 3350 | 4230 | 2670 | 3760 |
| Noise db | 42 | 40 | 38 | 52 |
Therefore, when the degree of the included angle between the connecting line between the lower plane 2 and the second transition curved surface 4 and the horizontal plane is 14-24 degrees, more air flows can be cut and taken away by the fan blade, the generated noise is relatively small, the optimal installation angle is 19 degrees, and the air volume is maximum.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
It is right above the utility model provides a flabellum structure for industrial fan has carried out detailed introduction, and it is right to have used specific individual example herein the utility model discloses a principle and implementation mode have been elucidated, and the description of above embodiment is only used for helping to understand the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (7)
1. The utility model provides a flabellum structure for industrial fan which characterized in that: including last curved surface and lower plane, the first side downwarping extension of last curved surface be provided with first curved surface, the second side downwarping extension of last curved surface be provided with the second curved surface, the first side downwarping extension of lower plane be provided with the third curved surface, the second side downwarping extension of lower plane be provided with the fourth curved surface, the tip of first curved surface with the tip of third curved surface between be provided with first transition curved surface, the tip of second curved surface with the tip of fourth curved surface between be provided with second transition curved surface, last curved surface the lower plane first curved surface the second curved surface the third curved surface the fourth curved surface first transition curved surface with second transition curved surface enclose into the fan body.
2. The blade structure for industrial fans as claimed in claim 1, wherein: the fan body is internally provided with a reinforcing rib.
3. The blade structure for industrial fans as claimed in claim 1, wherein: the outside of the fan body is coated with a decorative sleeve.
4. The blade structure for industrial fans as claimed in claim 1, wherein: the degree of an included angle between a connecting line between the lower plane and the second transition curved surface and the horizontal plane is 14-24 degrees.
5. The blade structure for industrial fans as claimed in claim 1, wherein: the ratio of the length of the first curved surface to the height thereof is 2: 1, the ratio of the length of the third curved surface to the height thereof is 2: 1.
6. the blade structure for industrial fans as claimed in claim 1, wherein: the ratio of the length of the second curved surface to the height thereof is 3: 2, the ratio of the length of the fourth curved surface to the height thereof is 2: 1.
7. the blade structure for industrial fans as claimed in claim 1, wherein: the wall thickness of the fan body is 1.6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922377537.0U CN212177502U (en) | 2019-12-26 | 2019-12-26 | Fan blade structure for industrial fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922377537.0U CN212177502U (en) | 2019-12-26 | 2019-12-26 | Fan blade structure for industrial fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212177502U true CN212177502U (en) | 2020-12-18 |
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ID=73763180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922377537.0U Active CN212177502U (en) | 2019-12-26 | 2019-12-26 | Fan blade structure for industrial fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212177502U (en) |
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2019
- 2019-12-26 CN CN201922377537.0U patent/CN212177502U/en active Active
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