CN214465021U - Air duct shell and bladeless fan - Google Patents
Air duct shell and bladeless fan Download PDFInfo
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- CN214465021U CN214465021U CN202120485828.6U CN202120485828U CN214465021U CN 214465021 U CN214465021 U CN 214465021U CN 202120485828 U CN202120485828 U CN 202120485828U CN 214465021 U CN214465021 U CN 214465021U
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000004088 simulation Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010019233 Headaches Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model provides an air duct shell and a bladeless fan, wherein the air duct shell comprises an air duct peripheral wall and an air duct top wall which are connected with each other, the air duct peripheral wall extends along the vertical direction, the air duct peripheral wall and the air duct top wall enclose an air duct, an air outlet extending in the vertical direction is arranged on the air duct peripheral wall, an air inlet is arranged at the bottom of the air duct peripheral wall, and the air inlet and the air outlet are both communicated with the air duct; a first guide plate is arranged in the air duct, the first guide plate is arranged close to the top wall of the air duct, and the surface of the first guide plate faces the air outlet; from bottom to top, first guide plate extends towards the direction of keeping away from the air outlet from the position that is close to the air outlet. The air duct shell can effectively reduce the generation of turbulent flow in the air duct and reduce noise.
Description
Technical Field
The utility model belongs to the technical field of domestic appliance's technique and specifically relates to a wind channel casing and bladeless fan is related to.
Background
Conventional fans typically include a motor and blades that are housed in a cage that allows air to pass through the cage and prevents foreign objects from contacting the blades, thereby providing a safety barrier. However, the air blown by the fan is discontinuous and uneven intermittently, and after the fan is blown for a long time, headache can be caused, and the fan has safety hazards, for example, children stretch fingers into the cage to contact the blades to cause damage due to curiosity, and external foreign matters can enter the cage to cause damage and the like. In order to improve the safety performance of the fan, the bladeless fan is more and more popular at present, the bladeless fan is also called an air back increasing machine, the bladeless fan can generate natural and continuous cool air, and the air is sucked into an engine seat, then airflow is increased by a plurality of times and is discharged through an annular gap, so that the airflow in an annular ring is driven to flow to form continuous and uniform air.
The bladeless fan generally adopts a mixed flow principle to use mixed flow fan blades, but the fan has small wind pressure and low wind speed, and can only increase the rotating speed of a motor to achieve higher wind pressure and wind speed, for example, the rotating speed of a driving motor is increased to 5000rpm or even higher.
The utility model discloses a utility model patent that publication number is CN212155261U discloses an air duct package assembly and bladeless fan, this bladeless fan need compress after inhaling in order to guarantee wind-force to the outside air, and consequently the inside air flow rate of bladeless fan is very big, easily takes place turbulent flow etc. between the air of upper portion wind channel contained angle department, leads to the air current noise great, and especially when the sleep uses night, the noise of air current is unfavorable for the sleep.
Disclosure of Invention
The utility model discloses a first purpose provides a can effectively reduce turbulent production in the wind channel, restrain the wind channel casing of the pneumatic noise that high rotational speed brought.
A second object of the present invention is to provide a bladeless fan with the above air duct housing.
In order to achieve the first purpose, the utility model provides an air duct shell, which comprises an air duct shell body and an air duct top wall, wherein the air duct shell body comprises an air duct peripheral wall and an air duct top wall which are connected with each other, the air duct peripheral wall extends along the vertical direction, the air duct peripheral wall and the air duct top wall enclose an air duct, an air outlet extending in the vertical direction is arranged on the air duct peripheral wall, an air inlet is arranged at the bottom of the air duct peripheral wall, and the air inlet and the air outlet are both communicated with the air duct; be provided with first guide plate in the wind channel, first guide plate is close to the wind channel roof setting, and the surface of first guide plate sets up towards the air outlet. From bottom to top, first guide plate extends towards the direction of keeping away from the air outlet from the position that is close to the air outlet.
According to the scheme, when the air flow flows from the air inlet to the air outlet through the air channel, the first guide plate can guide the air flow to the corner formed by the top wall of the air channel and the peripheral wall of the air channel, the high-pressure air flow can be buffered in the air channel under the driving of the high-rotation-speed fan blades, and the high-pressure air flow is scattered in the large turbulence ring formed at the top of the air channel through the first guide plate, so that the turbulence generated at the top of the air channel is effectively avoided, and the pneumatic noise caused by high rotation speed is inhibited.
The air duct is provided with a first guide plate, a second guide plate and a first guide plate, wherein the first guide plate is arranged at an included angle, the first guide plate is arranged at the air outlet, the second guide plate is arranged at the air outlet, and the second guide plate is arranged at one side of the first guide plate close to the air outlet.
Therefore, the second guide plate can guide the air flow to the air outlet, so that the air flow is enabled to flow smoothly when flowing through the air outlet, the steering angle of the air flow is small, the pressure loss caused by steering and wall resistance can be effectively reduced, and the air volume and the air pressure of the air outlet are ensured. Simultaneously, the arrangement of the first guide plate and the second guide plate can reduce air volume loss, increase air volume and improve fan performance. In addition, through the setting of first guide plate and second guide plate, when can effectively improve tone quality, make the air output more even, improve user experience.
The second guide plate is provided with a windward side and a leeward side which are oppositely arranged, the windward side faces the air outlet, and the leeward side faces the top wall of the air duct.
Therefore, the windward side is in accordance with the flow direction of the airflow, so that the airflow is better guided, and the wind resistance is reduced.
One preferred scheme is that the number of the second guide plates is more than two, and a plurality of the second guide plates are arranged at intervals; from bottom to top along the direction of arranging of second guide plate, the position of a plurality of second guide plates is close to the air outlet gradually.
It follows that a plurality of second air guides enables a better guidance of the air flow.
The further scheme is that the number of the first guide plates is the same as that of the second guide plates, and the first guide plates and the second guide plates are arranged in a one-to-one correspondence mode along the horizontal direction.
In a preferred embodiment, the first deflectors are arranged at equal intervals in the vertical direction, and the second deflectors are arranged at equal intervals in the vertical direction.
Preferably, the second baffle is angled from 45 to 70 degrees from horizontal.
The further scheme is that the included angle between the second guide plate and the horizontal plane is 60 degrees.
Preferably, the first baffle is angled from 45 to 70 degrees from horizontal.
Further, the included angle between the first guide plate and the horizontal plane is 60 degrees.
Preferably, both ends of the first deflector in the length direction are connected to the peripheral wall of the air duct.
Preferably, the cross section of the peripheral wall of the air duct is oval, and the air outlet is positioned at one end of the long axis of the peripheral wall of the air duct.
The air duct comprises an air duct top wall, two air duct peripheral walls and two air duct top walls, wherein the two air duct top walls are connected with each other through the air duct peripheral walls.
This makes it possible to improve the air blowing efficiency and the air blowing amount.
To achieve the second objective, the present invention provides a bladeless fan, which includes the above-mentioned air duct housing.
Drawings
Fig. 1 is a structural diagram of an air duct housing in an embodiment of the bladeless fan of the present invention.
Fig. 2 is a cross-sectional view of an embodiment of the bladeless fan of the present invention.
Fig. 3 is a structural diagram of a rear housing in an embodiment of the bladeless fan of the present invention.
Fig. 4 is a schematic view of an arrangement of flow guiding components in an embodiment of the bladeless fan according to the present invention.
Fig. 5 is a simulation effect diagram of airflow in an air duct casing of a conventional fan blade fan.
Figure 6 is a simulation result diagram of the airflow in the air duct housing implemented by the odorless fan of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Referring to fig. 1 to 3, the bladeless fan includes a base (not shown), a fan (not shown) and a substantially U-shaped air duct housing 1, wherein the base is installed at a lower end of the air duct housing 1, and the fan is installed in the base. Air duct casing 1 includes front casing 11 and back casing 12, and front casing 11 and back casing 12 all are roughly the U type and buckle each other along the fore-and-aft direction, and front casing 11 and back casing 12 form two air duct perisporium 3 and two air duct roof 4 jointly, and the bottom of two air duct perisporium 3 is connected.
The air duct peripheral wall 3 extends along the vertical direction, one air duct peripheral wall 3 and one air duct top wall 4 enclose an air duct 10, and the two air ducts 10 are parallel and are mutually communicated. An air outlet 14 extending in the vertical direction is formed in the air duct peripheral wall 3, the cross section of the air duct peripheral wall 3 is oval, the air outlet 14 is located at one end of the long axis of the air duct peripheral wall 3, the air outlet 14 is located on the front shell 11, an air inlet 13 is formed in the bottom of the air duct peripheral wall 3, and the air inlet 13 and the air outlet 14 are both communicated with the air duct 10.
The air duct 10 is internally provided with three guide assemblies 5 arranged at intervals, the three guide assemblies 5 are all arranged close to the air duct top wall 4, and the three guide assemblies 5 are arranged at equal intervals in the vertical direction. The arrangement direction of the flow guide assembly 5 is inclined relative to the vertical direction, and the position of the flow guide assembly 5 is gradually close to the air outlet 14 from bottom to top along the arrangement direction.
Referring to fig. 2 and 4, the flow guide assembly 5 includes a second flow guide plate 51 and a first flow guide plate 52 which are disposed at an included angle and close to each other, both ends of the second flow guide plate 51 and the first flow guide plate 52 in the length direction are connected to the air duct peripheral wall 3, and the first flow guide plate 52 and the second flow guide plate 51 in each flow guide assembly 5 are arranged along the horizontal direction. The three first baffles 52 are arranged at equal intervals in the vertical direction, and the three second baffles 51 are arranged at equal intervals. From bottom to top along the arrangement direction of the second guide plate 51, the second guide plate 51 is gradually close to the air outlet 14.
The second air deflector 51 has a windward side 511 and a leeward side 512 which are oppositely arranged, the upper surface of the first air deflector 52 is oppositely arranged with the leeward side 512 of the second air deflector 51, the windward side 511 faces the air outlet 14, the leeward side 512 faces the air duct top wall 4, and the first air deflector 52 is located on one side of the second air deflector 51 far away from the air outlet 14. From bottom to top, the first baffle 52 extends from a position close to the outlet 14 toward a direction away from the outlet 14.
The included angle theta between the second guide plate 51 and the horizontal plane is in the range of 45 degrees to 70 degrees, and the included angle between the first guide plate 52 and the horizontal plane is in the range of 45 degrees to 70 degrees. Preferably, the angle between the second baffle 51 and the horizontal plane and the angle between the first baffle 52 and the horizontal plane are both 60 degrees.
In the air duct shell of the existing fan blade fan, high-speed and high-pressure airflow is gathered in an air duct to form turbulent flow at the upper part, and according to a simulation result, air at the top of the air duct flows back to generate corner separation, which is shown in a simulation graph 5. The utility model discloses a set up roughly eight shape of falling water conservancy diversion subassembly 5, when the air current flows to air outlet 14 through wind channel 10 from air intake 13, second guide plate 51 can guide the air current to air outlet 14, first guide plate 52 can guide the air current to the corner that wind channel roof 4 and wind channel perisporium 3 formed, thereby break up the big turbulent circle that high-pressure air current formed at the top of wind channel 10, avoid wind channel 10 top corner to produce the turbulent flow, export air outlet 14 through water conservancy diversion subassembly 5 with high-pressure gas is even, guarantee that gas is smooth flow when flowing through air outlet 14 and the turning angle when guaranteeing gas to flow is little, can effectively reduce the pressure loss that turn to and the wall hinders and bring, thereby guarantee the amount of wind and the wind pressure of air-out, add eight shape of falling water conservancy diversion subassembly 5 the simulation result as shown in figure 6, show that the turbulent flow is eliminated in the figure, the streamline is more smooth and easy, this eight shape of falling water conservancy diversion subassembly 5 makes the air current that comes out through this water conservancy diversion subassembly 5 more smooth and easy, vortex flow is not easy to form, air quantity loss is effectively reduced, and the problem of noise is solved.
In addition, the number of the flow guide assemblies can be one or more than two, and the plurality of flow guide assemblies are arranged at intervals. The guide assembly may also only include the first guide plate, and the number of the first guide plate and the second guide plate may be the same, and the first guide plate and the second guide plate are arranged in one-to-one correspondence along the horizontal direction. The number of first baffles and second baffles may also be different. The size, the inclination angle and the like of the second guide plate and the first guide plate can be changed as required. The lower extreme of second guide plate can link together with the lower extreme of first guide plate, also can keep a certain distance apart. The second guide plate and the first guide plate can be only connected with the peripheral wall of the air duct at one end in the length direction, and the other end of the second guide plate and the other end of the first guide plate are not connected with the peripheral wall of the air duct. The above changes also enable the object of the present invention to be achieved.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, and are not intended to limit the scope of the present invention, as those skilled in the art will appreciate that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended to cover all such modifications, equivalents, and improvements as fall within the true spirit and scope of the invention.
Claims (14)
1. The air duct shell comprises an air duct peripheral wall and an air duct top wall which are connected with each other, the air duct peripheral wall extends along the vertical direction, an air duct is enclosed by the air duct peripheral wall and the air duct top wall, an air outlet extending in the vertical direction is formed in the air duct peripheral wall, an air inlet is formed in the bottom of the air duct peripheral wall, and the air inlet and the air outlet are both communicated with the air duct;
the method is characterized in that:
a first guide plate is arranged in the air duct, the first guide plate is arranged close to the top wall of the air duct, and the surface of the first guide plate faces the air outlet;
from bottom to top, first guide plate is from being close to the position orientation of air outlet is kept away from the direction of air outlet extends.
2. The air duct housing of claim 1, wherein:
still be provided with the second guide plate in the wind channel, the second guide plate with first guide plate is the contained angle and sets up relatively, the second guide plate is close to first guide plate sets up, the second guide plate is located first guide plate is close to one side of air outlet.
3. The air duct housing of claim 2, wherein:
the second guide plate is provided with a windward side and a leeward side which are oppositely arranged, the windward side faces the air outlet, and the leeward side faces the top wall of the air duct.
4. The air duct housing of claim 2, wherein:
the number of the second guide plates is more than two, and the second guide plates are arranged at intervals;
and the positions of the second guide plates are gradually close to the air outlet from bottom to top along the arrangement direction of the second guide plates.
5. The air duct housing of claim 4, wherein:
the first guide plates and the second guide plates are the same in number and are arranged in a one-to-one correspondence mode along the horizontal direction.
6. The air duct housing of claim 5, wherein:
the first deflectors are arranged at equal intervals in the vertical direction, and the second deflectors are arranged at equal intervals in the vertical direction.
7. The air duct housing according to any one of claims 2 to 6, wherein:
the included angle between the second guide plate and the horizontal plane is in the range of 45 degrees to 70 degrees.
8. The air duct housing of claim 7, wherein:
the second guide plate and the horizontal plane form an included angle of 60 degrees.
9. The air duct housing according to any one of claims 1 to 6, wherein:
the included angle between the first guide plate and the horizontal plane is in the range of 45 degrees to 70 degrees.
10. The air duct housing of claim 9, wherein:
the included angle between the first guide plate and the horizontal plane is 60 degrees.
11. The air duct housing according to any one of claims 1 to 6, wherein:
the two ends of the first guide plate in the length direction are connected to the peripheral wall of the air duct.
12. The air duct housing according to any one of claims 1 to 6, wherein:
the cross section of the air duct peripheral wall is oval, and the air outlet is located at one end of the long axis of the air duct peripheral wall.
13. The air duct housing according to any one of claims 1 to 6, wherein:
the number of the air duct peripheral walls and the air duct top wall is two, the bottoms of the two air duct peripheral walls are connected, the air duct peripheral walls and the air duct top wall are in one-to-one correspondence to form two air ducts, and the two air ducts are parallel and mutually communicated.
14. Bladeless fan, characterized in that, includes the wind channel casing of any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120485828.6U CN214465021U (en) | 2021-03-05 | 2021-03-05 | Air duct shell and bladeless fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120485828.6U CN214465021U (en) | 2021-03-05 | 2021-03-05 | Air duct shell and bladeless fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214465021U true CN214465021U (en) | 2021-10-22 |
Family
ID=78153607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120485828.6U Active CN214465021U (en) | 2021-03-05 | 2021-03-05 | Air duct shell and bladeless fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214465021U (en) |
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2021
- 2021-03-05 CN CN202120485828.6U patent/CN214465021U/en active Active
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