CN212003723U - Fan blade assembly with double-layer willow blades and fan - Google Patents
Fan blade assembly with double-layer willow blades and fan Download PDFInfo
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- CN212003723U CN212003723U CN201922452448.8U CN201922452448U CN212003723U CN 212003723 U CN212003723 U CN 212003723U CN 201922452448 U CN201922452448 U CN 201922452448U CN 212003723 U CN212003723 U CN 212003723U
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- 241000124033 Salix Species 0.000 title claims abstract description 14
- 238000007664 blowing Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 241000883990 Flabellum Species 0.000 abstract description 2
- 241000646858 Salix arbusculoides Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a flabellum subassembly with double-deck willow leaf piece, include: the fan comprises an inner shaft body, an inner fan blade group, an outer ring frame and an outer fan blade group; the inner fan blade group comprises a plurality of inner blades, and each inner blade is fixed on the inner shaft body; the outer ring frame is arranged around the outer periphery of the inner fan blade group and is fixedly connected with the inner blades; the outer fan blade group comprises a plurality of outer blades, and each outer blade is fixed on the outer wall curved surface of the outer ring frame; the section of the joint of the inner blade and the shaft body is a first section, and a first attack angle between the first section and the horizontal plane is an attack angle a; the section of the joint of the inner blade and the inner wall curved surface of the outer ring frame is a second section, and the attack angle between the second section and the horizontal plane is an attack angle b; the angle of attack a is greater than the angle of attack b. In the same way, the attack angle c of the inner blade is larger than the attack angle d. Also, the number of inner blades is smaller than the number of outer blades. It can improve the effect of blowing of fan, makes the air current softer to human comfortable. The utility model also discloses a fan.
Description
Technical Field
The utility model relates to a fan technical field especially relates to flabellum subassembly and fan with double-deck willow blade.
Background
Wherein, according to the recognition in the fan field, the extending direction of the blades along the radial direction of the rotating shaft is defined as the length direction of the blades; and the plane formed by cutting the length direction of the blade perpendicular to the length direction is a cross section, and the included angle between the cross section and the horizontal plane is an attack angle (wherein the horizontal plane is a plane perpendicular to the axis of the rotating shaft). However, the air blown by the existing fan is not soft enough, so that when the rotating speed of the fan blades is fast to a certain limit, not only the head of a human body is uncomfortable, but also the body of the human body feels too cool; the experience effect is poor.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a fan blade assembly with double-layer willow blades, which can improve the blowing effect of a fan, so that the air flow is softer, and the human body is comfortable.
The second objective of the present invention is to provide a fan.
The utility model discloses an one of the purpose adopts following technical scheme to realize:
a fan blade assembly having a double-layer willow blade, comprising:
an inner shaft body;
the inner fan blade group comprises a plurality of inner blades which are radially arranged relative to the axis of the inner shaft body, and each inner blade is fixed on the inner shaft body;
the outer ring frame is arranged around the outer periphery of the inner fan blade group and is fixedly connected with the inner blades;
the outer fan blade group comprises a plurality of outer blades which are radially arranged relative to the axis of the outer ring frame, and each outer blade is fixed on the outer wall curved surface of the outer ring frame;
the section of the joint of the inner blade and the shaft body is a first section, and a first attack angle between the first section and the horizontal plane is an attack angle a;
the section of the joint of the inner blade and the inner wall curved surface of the outer ring frame is a second section, and the attack angle between the second section and the horizontal plane is an attack angle b;
the section of the joint of the outer blade and the outer wall curved surface of the outer ring frame is a third section, and the attack angle between the third section and the horizontal plane is an attack angle c;
an attack angle between the end part side face of the outer blade opposite to the third section and a horizontal plane is an attack angle d;
the number of the inner blades is less than that of the outer blades;
the angle of attack a is equal to the angle of attack c, the angle of attack b is equal to the angle of attack d, and the angle of attack a is larger than the angle of attack b.
Further, the length of the inner blade is L1, the length of the outer blade is L2, and the relationship between L1 and L2 is L1 > L2 or L1 < L2 or L1 ═ L2.
Further, when L1 and L2 are in a relationship of L1 > L2 or L1 < L2, the ratio between L1 and L2 both satisfy the golden ratio.
Further, the number of the inner blades is 7, and the number of the outer blades is 9.
The second purpose of the utility model is realized by adopting the following technical scheme:
the fan comprises the fan blade assembly with the double-layer willow blade.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. because the inner shaft body, the inner fan blade group, the outer ring frame and the outer fan blade group are fixed together, the rotating speed of the inner fan blade group is equal to the angular speed of the outer fan blade group. Although the linear velocity of the outer blades of the outer blade group is larger, the wind blowing area of the inner blades is larger than that of the outer blades because the number of the inner blades is smaller than that of the outer blades, and finally the wind speed of the inner blade group is larger than that of the outer blade group, so that the fan is ensured to have enough wind volume.
2. On the premise of meeting the air quantity, the wind power of the inner fan blade group is too large to cause discomfort of a human body, and the wind power can be softer due to the function of diffusing the wind direction of the outer fan blade group. More importantly, the attack angle a is equal to the attack angle c, the attack angle b is equal to the attack angle d, and the attack angle a is larger than the attack angle b; the angle of attack (angle of attack a or angle of attack c) of the starting part of the same blade (no matter the inner blade or the outer blade) in the radial outward direction of the inner shaft body is larger than the angle of attack (angle of attack b or angle of attack d) of the tail end part of the same blade, so that the shape from the starting part to the tail end part of the blade is similar to a willow leaf shape, the blade has the functions of relieving wind speed and adjusting wind direction, and finally the rapid wind force can be quickly relieved.
Drawings
Fig. 1 is a schematic structural diagram of a fan with double-layer willow blades according to the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a side view of the inner leaf shown in FIG. 1;
FIG. 4 is a side view of the outer blade shown in FIG. 1.
In the figure: 1. an inner shaft body; 2. an inner blade; 3. an outer ring frame; 4. and (4) outer blades.
Detailed Description
Fig. 1-4 illustrate a fan blade assembly with double-layer willow blade according to a preferred embodiment of the present invention, including:
an inner shaft body 1;
the inner fan blade group comprises a plurality of inner blades 2 which are radially arranged relative to the axis of the inner shaft body 1, and each inner blade 2 is fixed on the inner shaft body 1;
the outer ring frame 3 is arranged around the inner fan blade group and fixedly connected with the inner blades 2;
the outer fan blade group comprises a plurality of outer blades 4 which are radially arranged relative to the axis of the outer ring frame 3, and each outer blade 4 is fixed on the outer wall curved surface of the outer ring frame 3;
the section of the joint of the inner blade 2 and the shaft body is a first section, and a first attack angle between the first section and the horizontal plane is an attack angle a;
the section of the joint of the inner blade 2 and the inner wall curved surface of the outer ring frame 3 is a second section, and the attack angle between the second section and the horizontal plane is an attack angle b;
the section of the joint of the outer blade 4 and the outer wall curved surface of the outer ring frame 3 is a third section, and the attack angle between the third section and the horizontal plane is an attack angle c;
the attack angle between the end part side face of the outer blade 4 opposite to the third section and the horizontal plane is an attack angle d;
the number of the inner blades 2 is less than that of the outer blades 4;
the angle of attack a is equal to the angle of attack c, the angle of attack b is equal to the angle of attack d, and the angle of attack a is larger than the angle of attack b.
Here, since the inner shaft 1, the inner blade group, the outer ring frame 3, and the outer blade group are fixed together, the rotational speed of the inner blade group is equal to the angular speed of the outer blade group. Although the linear velocity of the outer blades 4 of the outer blade group is greater, the number of the inner blades 2 is smaller than that of the outer blades 4, that is, the wind blowing area of the inner blades 2 is larger than that of the outer blades 4, and finally the wind speed of the inner blade group is larger than that of the outer blade group, so as to ensure that the fan has enough wind volume.
On the premise of meeting the air quantity, the wind power of the inner fan blade group is too large to cause discomfort of a human body, and the wind power can be softer due to the function of diffusing the wind direction of the outer fan blade group. More importantly, the attack angle a is equal to the attack angle c, the attack angle b is equal to the attack angle d, and the attack angle a is larger than the attack angle b; in the radial outward direction of the inner shaft 1, the attack angle (attack angle a or attack angle c) of the starting part of the same blade (no matter the inner blade 2 or the outer blade 4) is larger than the attack angle (attack angle b or attack angle d) of the tail end part of the same blade, so that the shape from the starting part to the tail end part of the blade is similar to a willow leaf shape, the blade has the functions of relieving the wind speed and adjusting the wind direction, and finally the rapid wind force is rapidly relieved.
That is to say, through the setting of blade quantity and the setting of angle of attack, under the prerequisite that provides the amount of wind finally for the wind that the fan blew off is gentler, makes the human feel more comfortable.
Preferably, the length of the inner blade 2 is L1, the length of the outer blade 4 is L2, and the relationship between L1 and L2 is L1 > L2 or L1 < L2 or L1 ═ L2. Further, when the relationship between L1 and L2 is L1 > L2 or L1 < L2, the ratio between L1 and L2 both satisfy the golden ratio; thereby ensuring that the integral adjustment between the wind speed and the wind quantity is in the best state.
In a preferred embodiment, the number of inner blades 2 is 7 and the number of outer blades 4 is 9. At this time, although the number of the outer blades 4 is only two more than that of the inner blades 2, the inner blades 2 with the number of 7 make the area of a single inner blade 2 in a preferable size, which is neither too large nor too small, and the resistance is small, so that the wind power can be strengthened. The outer blades 4 with the number of 9 enable the area of a single outer blade 4 to be smaller, so that the strong wind scattering capacity of the outer blade is improved, and accordingly wind power is diffused and made softer.
The fan comprises the fan blade assembly with the double-layer willow blade.
The fixed connection includes: for example, the permanent fixing is made by integral molding, the permanent fixing is welded, and the fastener is connected for detachable fixing.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (5)
1. Fan blade assembly with double-layer willow blade, characterized by includes:
an inner shaft body;
the inner fan blade group comprises a plurality of inner blades which are radially arranged relative to the axis of the inner shaft body, and each inner blade is fixed on the inner shaft body;
the outer ring frame is arranged around the outer periphery of the inner fan blade group and is fixedly connected with the inner blades;
the outer fan blade group comprises a plurality of outer blades which are radially arranged relative to the axis of the outer ring frame, and each outer blade is fixed on the outer wall curved surface of the outer ring frame;
the section of the joint of the inner blade and the shaft body is a first section, and a first attack angle between the first section and the horizontal plane is an attack angle a;
the section of the joint of the inner blade and the inner wall curved surface of the outer ring frame is a second section, and the attack angle between the second section and the horizontal plane is an attack angle b;
the section of the joint of the outer blade and the outer wall curved surface of the outer ring frame is a third section, and the attack angle between the third section and the horizontal plane is an attack angle c;
an attack angle between the end part side face of the outer blade opposite to the third section and a horizontal plane is an attack angle d;
the number of the inner blades is less than that of the outer blades;
the angle of attack a is equal to the angle of attack c, the angle of attack b is equal to the angle of attack d, and the angle of attack a is larger than the angle of attack b.
2. The fan blade assembly with double-layer willow blades of claim 1, wherein the length of the inner blade is L1, the length of the outer blade is L2, and the relationship between L1 and L2 is L1 > L2 or L1 < L2 or L1 ═ L2.
3. The fan blade assembly with double-layer willow blades of claim 2, wherein when the relation between L1 and L2 is L1 > L2 or L1 < L2, the ratio between L1 and L2 satisfies the golden ratio.
4. The fan blade assembly of claim 1, wherein the number of inner blades is 7 and the number of outer blades is 9.
5. A fan comprising the fan blade assembly of any of claims 1-4 having double-layer willow blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922452448.8U CN212003723U (en) | 2019-12-30 | 2019-12-30 | Fan blade assembly with double-layer willow blades and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922452448.8U CN212003723U (en) | 2019-12-30 | 2019-12-30 | Fan blade assembly with double-layer willow blades and fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212003723U true CN212003723U (en) | 2020-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922452448.8U Active CN212003723U (en) | 2019-12-30 | 2019-12-30 | Fan blade assembly with double-layer willow blades and fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212003723U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113000173A (en) * | 2021-03-29 | 2021-06-22 | 南京工程学院 | Horizontal hydraulic bidirectional hedging high-speed turbulent mill for superhard nano crushing |
| CN113202798A (en) * | 2021-05-31 | 2021-08-03 | 盐城动益汽车配件有限公司 | Noise reduction type engine cooling fan |
-
2019
- 2019-12-30 CN CN201922452448.8U patent/CN212003723U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113000173A (en) * | 2021-03-29 | 2021-06-22 | 南京工程学院 | Horizontal hydraulic bidirectional hedging high-speed turbulent mill for superhard nano crushing |
| CN113202798A (en) * | 2021-05-31 | 2021-08-03 | 盐城动益汽车配件有限公司 | Noise reduction type engine cooling fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Fan blade components and fans with double-layer willow leaves Granted publication date: 20201124 Pledgee: Zhuzhou Branch of China Everbright Bank Co.,Ltd. Pledgor: HUNAN QUANKANG ELECTRONIC TECHNOLOGY Co.,Ltd. Registration number: Y2024980004888 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |