CN219795669U - Silent air duct structure of bladeless fan - Google Patents
Silent air duct structure of bladeless fan Download PDFInfo
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- CN219795669U CN219795669U CN202320507992.1U CN202320507992U CN219795669U CN 219795669 U CN219795669 U CN 219795669U CN 202320507992 U CN202320507992 U CN 202320507992U CN 219795669 U CN219795669 U CN 219795669U
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- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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Abstract
The utility model discloses a silent air duct structure of a bladeless fan, and belongs to the technical field of bladeless fans. The structure is applied to a bladeless fan and comprises a base and two air ducts arranged above the base, wherein the cross section outline of each air duct is of an airfoil structure, the more round end in the cross section outline of each air duct is a front edge, the more slender end is a rear edge, and both sides of each air duct are cambered surfaces; the side surface of the air duct is provided with a plurality of slender air outlet grooves along the rear edge; the inner channel of the air duct gradually contracts from bottom to top, and when the base is used for exhausting air, the air is guided by the cambered surface of the air duct to be accelerated to blow out to the air outlet groove. The wing-shaped structure of the air duct is beneficial to guiding transverse air outlet, and meanwhile, the air speed is increased by utilizing a streamline cambered surface under the condition that the power consumption of the bladeless fan is unchanged, so that energy is saved, on the other hand, the blown air cannot directly strike on a planar structure, and the wind noise can be effectively reduced; in addition, the air duct gradually contracts from bottom to top, so that the whole air outlet of the bladeless fan is more uniform.
Description
Technical Field
The utility model belongs to the technical field of bladeless fans, and particularly relates to a silent air duct structure of a bladeless fan.
Background
The traditional electric fan is characterized in that fan blades are exposed in air, and the fan blades are driven to rotate through a motor, so that air flow is accelerated, evaporation of sweat on the surface of a human body is promoted, and a cooling effect is brought. However, fan blades exposed to air are extremely dangerous under high-speed rotation, and even if a shielding cover is added outside the fan blades, the fan blades are easily involved in some light, flexible and tiny substances, or children can touch the rotating fan blades because of curiosity, and bad results are finally caused. The fan without blades is internally provided with the blades, so that generated wind is output through the air duct, and the fan without blades is like the fan without blades in appearance, thereby effectively reducing the danger caused by misoperation of touch and the like, and being popular in recent years due to simple appearance and smooth lines.
In the bladeless fan, compressed air is rapidly extracted and ejected by using turbine blades, so that high-speed flowing air flow is formed. However, the turbine engine can generate severe vibration in the running process, and high-frequency noise is formed by combining the running sound of the motor; in addition, the wind cylinders of the common bladeless fans in the market are circular, so that the purpose is to make the air outlet blow to the uppermost part along the arc line of the circular ring, and finally, the whole air outlet of the wind cylinders is more uniform, but the air outlet below the wind cylinders is high, and the air outlet above the wind cylinders is low. However, because the wind generated by the turbine is blown upwards and is not provided with a transverse force, and the wind outlet of the bladeless fan is blown out along the wind outlet on the side surface of the circular wind outlet barrel, the wind outlet is almost vertical to the wind outlet direction of the turbine, a large amount of wind can be firstly impacted on the inner wall of the wind outlet barrel and then blown out from the wind outlet, so that the actual wind outlet speed has great loss and simultaneously generates great noise; in order to increase the actual wind speed, only the power of the turbine can be increased, which in turn leads to greater noise.
As disclosed in the patent with publication number CN210978021U, a through-flow wind wheel is arranged in a vertical wind outlet barrel, a motor is arranged to drive the through-flow wind wheel to rotate while the turbine is in wind outlet, and the wind flowing upwards at high speed can change direction due to the guiding of blades of the through-flow wind wheel, be blown out along the tangent line of the rotation direction of the through-flow wind wheel, and be finally blown out from the wind outlet. The technical scheme reserves the wind speed and the wind quantity of the wind outlet to a certain extent, but because the wind barrel is uniform and vertical up and down, the turbine wind outlet is continuously blown out from the wind outlet on the side surface in the process of blowing from bottom to top, and the wind quantity and the wind speed are greatly reduced when reaching the top, so that the actual wind outlet is reduced, and finally the actual wind outlet is nonuniform up and down; meanwhile, the motor for driving the cross-flow wind wheel to rotate can improve the overall power consumption of the bladeless fan.
Therefore, there is a need to provide a silent air duct structure of a bladeless fan to solve the above problems.
Disclosure of Invention
Aiming at the problems in the related art, the utility model provides a silent air duct structure of a bladeless fan, so that the noise is smaller when the bladeless fan operates, and the air outlet is more uniform.
The utility model is realized in the following way:
a silent air duct structure of a bladeless fan is applied to the bladeless fan, the bladeless fan comprises a base and two air ducts arranged above the base, one end of the bottom of each air duct is provided with a first opening, and the base is connected with a base;
the base is provided with two air outlets, and the air duct is arranged on the air outlets;
the cross section outline of the air duct is of an airfoil structure, one round end of the cross section outline of the air duct is a front edge, one slender end of the cross section outline of the air duct is a rear edge, and two sides of the cross section outline of the air duct are cambered surfaces; a plurality of slender air outlet grooves are formed in the side surface of the air duct along the rear edge;
the inner channel of the air duct gradually contracts from bottom to top, and air is gradually blown out along the air outlet groove in the upward flowing process in the air duct, so that the air outlet quantity is reduced and the air speed is reduced when reaching the top; after the air duct is contracted, the speed of wind can be increased,
when the base is used for exhausting air, the air can be guided by the cambered surface of the air duct to be accelerated to blow out to the air outlet groove.
As a further optimization of the above scheme, the base comprises an air compression device, and a guide cover is arranged on the air compression device;
the upper surface of the air compression device comprises an annular air outlet channel and a central motor assembly;
the air guide sleeve comprises an inner sleeve and an outer sleeve; the inner cover is covered above the motor component; the outer cover is sleeved outside the inner cover, two air guide channels are formed by shunting above the outer cover, and the tail ends of the air guide channels are air outlets;
the whole distribution of the inner cover and the outer cover is in a streamline structure.
When the base is used for exhausting air, the air guide cylinder can be blown upwards along the two air guide channels, part of air is accelerated to be blown out along the cambered surface of the air guide cylinder, and part of air continues to flow upwards and is accelerated to be blown out along the cambered surface of the air guide cylinder.
As the scheme is further optimized, the first flexible component is arranged between the air outlet and the first opening, so that the conduction of vibration of the base below can be reduced, and noise is reduced.
As further optimization of the scheme, the second flexible component is arranged between the air compression device and the air guide sleeve, so that transmission of vibration of the air compression device below can be reduced, and noise is reduced.
As further optimization of the scheme, a plurality of outer reinforcing ribs are arranged outside the air duct.
As a further optimization of the scheme, a shell is arranged outside the base and the air duct, and gaps are formed between the shell and the air duct as well as between the shell and the base; the shell is fixedly connected with the base;
the shell is provided with a second opening at a position corresponding to the air outlet groove; the arrangement of the shell can isolate noise generated by the internal structure and reduce the propagation of the noise.
As a further optimization of the scheme, a plurality of inner reinforcing ribs are arranged inside the shell.
As a further optimization of the scheme, a plurality of third reinforcing ribs are arranged on the second opening, so that the second opening is prevented from being enlarged due to high-speed air outlet.
As a further optimization of the scheme, the air duct is formed by assembling a front cylinder and a rear cylinder, a plurality of fixing bosses are respectively arranged on two sides of the front cylinder, a plurality of fixing buckles are respectively arranged on two sides of the rear cylinder, and the fixing buckles are connected with the fixing bosses in a buckled mode.
As a further optimization of the scheme, one side of the fixing boss is an inclined guide surface, and the rear cylinder is gradually spliced with the front cylinder along the inclined guide surface through the fixing buckle until the fixing buckle and the fixing boss are mutually buckled and fixed.
The beneficial effects are as follows:
the cross section outline of the air duct is set to be of an airfoil structure, so that on one hand, the transverse air outlet is favorably guided, meanwhile, the air speed is increased by utilizing a streamline cambered surface under the condition that the power consumption of the bladeless fan is unchanged, energy is saved, and on the other hand, the air blown out from the air outlet cannot be directly beaten on a plane structure, thereby preventing wind noise and reducing the loss of the air speed; in addition, the air duct gradually contracts from bottom to top, so that the whole air outlet of the bladeless fan is more uniform; the air duct and the base are provided with the outer shell, a gap is arranged between the outer shell and the base instead of being directly connected, so that vibration and noise conduction can be reduced, and noise propagation is further reduced.
Drawings
FIG. 1 is a schematic diagram of an internal structure of a bladeless fan according to an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of a pod according to an embodiment of the present utility model;
FIG. 3 is a schematic structural diagram of an air duct according to an embodiment of the present utility model;
FIG. 4 is a partial view of FIG. 3 at A;
FIG. 5 is a partial view of FIG. 3 at B;
FIG. 6 is a schematic cross-sectional view of an air duct according to an embodiment of the present utility model;
FIG. 7 is a schematic cross-sectional view of a housing according to an embodiment of the present utility model;
fig. 8 is a partial view of fig. 7 at C.
Reference numerals:
1. a base; 11. an air compression device; 12. a guide cover; 121. an inner cover; 122. an outer cover; 1221. an air guide channel; 1222. an air outlet; 2. an air duct; 21. a first opening; 22. an outer reinforcing rib; 23. a front barrel; 231. a fixing boss; 2311. a sloped guide surface; 24. a rear barrel; 241. a fixing buckle; 25. a leading edge; 26. a trailing edge; 27. an air outlet groove; 3. a first flexible component; 4. a second flexible component; 5. a housing; 51. a second opening; 52. an inner reinforcing rib; 53. a third reinforcing rib; 6. and (5) a base.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 8, the present embodiment provides a silent air duct structure of a bladeless fan, which is applied to the bladeless fan, wherein the bladeless fan includes a base 1 and two air ducts 2 installed above the base 1, a first opening 21 is provided at one end of the bottom of the air duct 2, and the base 1 is connected with a base 6;
in this embodiment, the base 1 includes an air compressor 11, a guide cover 12 is installed on the air compressor 11, and a second flexible component 4 is disposed between the air compressor 11 and the guide cover 12, so that conduction of vibration of the air compressor 11 below can be reduced, and noise is reduced. The upper surface of the air compressing device 11 comprises an annular air outlet channel (not shown) and a central motor assembly (not shown); the pod 12 includes an inner cover 121 and an outer cover 122; the inner cover 121 covers the motor assembly; the outer cover 122 is sleeved outside the inner cover 121, two air guide channels 1221 are formed by shunting above the outer cover 122, and the tail ends of the air guide channels 1221 are air outlets 1222; the inner and outer covers 121 and 122 are integrally distributed in a streamlined configuration.
In this embodiment, a plurality of external reinforcing ribs 22 are arranged outside the air duct 2; the air duct 2 is assembled by a front cylinder 23 and a rear cylinder 24, a plurality of fixing bosses 231 are respectively arranged on two sides of the front cylinder 23, a plurality of fixing buckles 241 are respectively arranged on two sides of the rear cylinder 24, wherein one side of each fixing boss 231 is an inclined guide surface 2311, and the rear cylinder 24 is gradually spliced with the front cylinder 23 along the inclined guide surfaces 2311 through the fixing buckles 241 until the fixing buckles 241 are mutually buckled and fixed with the fixing bosses 231.
Two air outlets 1222 are arranged on the base 1, and the air duct 2 is arranged on the air outlets 1222; in this embodiment, the first flexible component 3 is disposed between the air outlet 1222 and the first opening 21, so as to reduce conduction of vibration of the lower base 1 and noise.
In this embodiment, a housing 5 is further provided outside the base 1 and the air duct 2, and a gap is formed between the housing 5 and the air duct 2 and between the housing 1 and the base 1; the shell 5 is fixedly connected with the base 6; in this embodiment, a plurality of inner ribs 52 are provided inside the housing 5.
The cross section outline of the air duct 2 is of an airfoil structure, one round end of the cross section outline of the air duct 2 is a front edge 25, the other slender end of the cross section outline of the air duct 2 is a rear edge 26, and two sides of the cross section outline of the air duct are cambered surfaces; the side surface of the air duct 2 is provided with a plurality of slender air outlet grooves 27 along the rear edge 26; in this embodiment, the housing 5 is provided with a second opening 51 at a position corresponding to the air outlet slot 27; the second opening 51 is provided with a plurality of third reinforcing ribs 53 to prevent the second opening 51 from being enlarged due to high-speed air-out. The arrangement of the housing 5 can isolate noise generated by the internal structure and reduce the propagation of noise.
The internal channel of the air duct 2 gradually contracts from bottom to top, and air is gradually blown out along the air outlet groove 27 in the upward flowing process in the air duct 2, so that the air outlet quantity is reduced and the air speed is reduced when reaching the top; after the air duct 2 is contracted, the speed of wind can be increased;
when the base 1 is used for exhausting air, the air guide cylinder 2 is blown upwards along the two air guide channels 1221, part of air is accelerated to be blown out along the cambered surface of the air guide cylinder 2, and part of air continues to flow upwards and is accelerated to be blown out along the cambered surface of the air guide cylinder 2.
Variations and modifications to the above would be obvious to persons skilled in the art to which the utility model pertains from the foregoing description and teachings. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the utility model should be also included in the scope of the claims of the utility model. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present utility model in any way.
Claims (10)
1. A silent air duct structure of a bladeless fan is applied to the bladeless fan, the bladeless fan comprises a base and two air ducts arranged above the base, one end of the bottom of each air duct is provided with a first opening, and the base is connected with a base; the method is characterized in that:
the base is provided with two air outlets, and the air duct is arranged on the air outlets;
the cross section outline of the air duct is of an airfoil structure, one round end of the cross section outline of the air duct is a front edge, one slender end of the cross section outline of the air duct is a rear edge, and two sides of the cross section outline of the air duct are cambered surfaces; a plurality of slender air outlet grooves are formed in the side surface of the air duct along the rear edge;
the internal channel of the air duct gradually contracts from bottom to top,
when the base is used for exhausting air, the air is guided by the cambered surface of the air duct to be accelerated and blown out to the air outlet groove.
2. The silent air duct structure of bladeless fan of claim 1, wherein: the base comprises an air compression device, and a guide cover is arranged on the air compression device;
the upper surface of the air compression device comprises an annular air outlet channel and a central motor assembly;
the air guide sleeve comprises an inner sleeve and an outer sleeve; the inner cover is covered above the motor component; the outer cover is sleeved outside the inner cover, two air guide channels are formed by shunting above the outer cover, and the tail ends of the air guide channels are air outlets;
the whole distribution of the inner cover and the outer cover is in a streamline structure.
3. The silent air duct structure of bladeless fan of claim 1, wherein: a first flexible component is arranged between the air outlet and the first opening.
4. The silent air duct structure of bladeless fan of claim 2, wherein: a second flexible component is arranged between the air compression device and the air guide sleeve.
5. The silent air duct structure of bladeless fan of claim 1, wherein: the air duct is provided with a plurality of external reinforcing ribs.
6. The silent air duct structure of bladeless fan of claim 1, wherein: the outer parts of the base and the air duct are provided with a shell, and a gap is reserved between the shell and the air duct and between the shell and the base; the shell is fixedly connected with the base;
the shell is provided with a second opening at a position corresponding to the air outlet groove.
7. The silent air duct structure of bladeless fan of claim 6, wherein: and a plurality of inner reinforcing ribs are arranged inside the shell.
8. The silent air duct structure of bladeless fan of claim 6, wherein: and a plurality of third reinforcing ribs are arranged on the second opening.
9. The silent air duct structure of bladeless fan of claim 1, wherein: the air duct is formed by assembling a front cylinder and a rear cylinder, a plurality of fixing bosses are respectively arranged on two sides of the front cylinder, a plurality of fixing buckles are respectively arranged on two sides of the rear cylinder, and the fixing buckles are connected with the fixing bosses in a buckled mode.
10. The silent air duct structure of bladeless fan of claim 9, wherein: one side of the fixing boss is an inclined guide surface, and the rear cylinder is gradually spliced with the front cylinder along the inclined guide surface through the fixing buckle until the fixing buckle and the fixing boss are mutually buckled and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320507992.1U CN219795669U (en) | 2023-03-15 | 2023-03-15 | Silent air duct structure of bladeless fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320507992.1U CN219795669U (en) | 2023-03-15 | 2023-03-15 | Silent air duct structure of bladeless fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219795669U true CN219795669U (en) | 2023-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320507992.1U Active CN219795669U (en) | 2023-03-15 | 2023-03-15 | Silent air duct structure of bladeless fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219795669U (en) |
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- 2023-03-15 CN CN202320507992.1U patent/CN219795669U/en active Active
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