CN113187767A - Air duct structure of bladeless fan and bladeless fan - Google Patents
Air duct structure of bladeless fan and bladeless fan Download PDFInfo
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- CN113187767A CN113187767A CN202110529947.1A CN202110529947A CN113187767A CN 113187767 A CN113187767 A CN 113187767A CN 202110529947 A CN202110529947 A CN 202110529947A CN 113187767 A CN113187767 A CN 113187767A
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- 230000007704 transition Effects 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 description 4
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- 230000008602 contraction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides an air duct structure of a bladeless fan and the bladeless fan, wherein the air duct structure comprises an air outlet part, an air outlet duct is formed inside the air outlet part, a plurality of air outlets are formed in one side of the air duct wall of the air outlet duct along the length direction of the air duct wall, an air guide structure is formed on the other side, away from the air outlets, of the air duct wall of the air outlet duct, the air guide structure comprises a first air guide section and a second air guide section which are arranged along the air flow direction, the first air guide section is positioned at the upstream of the second air guide section, and the air outlet end of the second air guide section extends to the top of the air outlet duct; the first air guide section forms a cambered surface which is gradually reduced towards the central axis of the air outlet duct, and the second air guide section forms a cambered surface which is gradually expanded towards the central axis of the air outlet duct; the air inlet portion is provided with an air inlet which is communicated with the air outlet duct, and the air inlet end of the first air guide section extends to be connected with the air inlet portion. The air duct structure can effectively reduce the pneumatic noise of the bladeless fan and increase the air output.
Description
Technical Field
The invention belongs to the field of bladeless fans, and particularly relates to an air channel structure of a bladeless fan and the bladeless fan.
Background
Compared with the traditional axial flow fan, the bladeless fan on the market is more stable in air outlet flow, does not have impact feeling and wavy stimulation of the air flow, is lower in energy consumption, is designed to boost the air outlet flow through a unique air duct, and drives the air flow in the annular ring by the air outlet flow under the action of gas viscous force, so that the multiplication of the air flow is realized.
In appearance, because the fan blade of bladeless fan hides in the fan base, so the unable direct contact fan blade of user, compare in traditional fan safer, the outward appearance is unique moreover, has more scientific and technological aesthetic feeling and innovation sense.
However, bladeless fans are more noisy than conventional fans. The bladeless fan has smaller blade size and higher rotating speed, and needs to boost the outlet wind speed through the flow passage, so that vortex noise is generated in the air channel.
The present invention has been made in view of this situation.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide an air channel structure of a bladeless fan and the bladeless fan, wherein the air channel structure can effectively reduce pneumatic noise.
In order to solve the above technical problems, a first objective of the present invention is to provide an air duct structure of a bladeless fan, comprising
The air outlet structure comprises an air outlet part, an air outlet duct is formed inside the air outlet part, a plurality of air outlets are formed in one side of the air outlet duct wall along the length direction of the air outlet duct wall, an air guide structure is formed on the other side, away from the air outlets, of the air duct wall of the air outlet duct, the air guide structure comprises a first air guide section and a second air guide section which are arranged along the air flow direction, the first air guide section is located at the upstream of the second air guide section, and the air outlet end of the second air guide section extends to the top of the air outlet duct; the first air guide section forms a cambered surface which is gradually reduced towards the central axis of the air outlet duct, and the second air guide section forms a cambered surface which is gradually expanded towards the central axis of the air outlet duct;
the air inlet part is provided with an air inlet, the air inlet is communicated with the air outlet duct, and the air inlet end of the first air guide section extends to be connected with the air inlet part.
Further optionally, a vertical plane located at an air inlet end of the first air guiding section is set as a standard plane, and a distance between the standard plane and a farthest position of the first air guiding section is set as h1(ii) a The length of the first air guide section is L1The distance between the position of the first wind guide section farthest from the standard surface and the wind inlet end of the first wind guide section is L11And the distance between the first wind guide section and the wind outlet end of the first wind guide section is L12，L1＝L11+L12The following requirements are met: h is1/L1In the range of 0.01 to 0.3, L11/L1In the range of 0 to 1.
Further optionally, an included angle between a tangent line of the air inlet end of the first air guiding section and a horizontal line is alpha1The included angle between the tangent line of the air outlet end and the horizontal line is beta1The following requirements are met: alpha is alpha1∈(40°,90°]，β1∈(40°,180°)。
Further optionally, the length of the second wind guiding segment is L2The distance between the standard surface and the farthest position of the second air guide section is h2The following requirements are met: tan (. beta.) of2)＜h2/L2＜tan(α2)。
Further optionally, an included angle between a tangent line of the air inlet end of the second air guiding section and a horizontal line is alpha2The included angle between the tangent line of the air outlet end and the horizontal line is beta2，α2∈(30°,90°]，β2∈(0°,90°)，β2＜α2。
Further optionally, the deflection angle of the second wind guiding segment is set to θ, and θ ═ α2-β2The following requirements are met: theta epsilon (0 deg., 45 deg.).
Further optionally, the air guide structure further comprises a transition section, the transition section is parallel to the central axis of the air outlet duct, the air inlet end of the transition section is connected with the air outlet end of the first air guide section, and the air outlet end is connected with the air inlet end of the second air guide section.
Further optionally, the length of the transition sectionIs L3The following requirements are met: (L)2+L3)/(L1+L2+L3) In the range of 0.3 to 0.7.
Further optionally, the distance between the standard surface and the transition section is h3，h3≤h1。
Further optionally, a connection surface of the first air guiding section, the second air guiding section and the transition section is a wavy wall surface, and the wavy wall surface is distributed in a sine shape.
Further optionally, the width of the air outlet duct is L4The amplitude of the wavy wall surface is A, and a sine formula is required to be satisfied: y-A sin (n pi. x/L)4) Wherein n is an odd number, L4The curve period is 2L for the element of/nA (0.1,6)4/n。
Further optionally, the air outlet end of the wavy wall surface extends to the top end of the air outlet duct, and an included angle between the wavy wall surface and the top end face of the air outlet duct is alpha3The following requirements are met: alpha is alpha3＞90°。
Further optionally, the air outlet portion includes two air duct arms, an air outlet branch channel is formed in each of the two air duct arms, the two air outlet branch channels form the air outlet channel, and the air inlet is communicated with the air outlet branch channels;
the air guide structure is characterized in that the two air duct arms are arranged in a clearance mode, a through air duct is formed between the two air duct arms in a clearance mode, the air outlet is formed in one side, facing the through air duct, of the two air duct arms, and the air guide structure is formed in one side, deviating from the air outlet, of the two air duct arms.
The second objective of the present invention also provides a bladeless fan, which has the above air duct structure.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the air guide structure of the embodiment can effectively eliminate larger eddy in the air duct and reduce eddy noise in the outlet air duct of the bladeless fan; the air flow in the air duct can be stabilized, the flow loss of the bladeless fan is reduced, and the air outlet volume is increased; the pressure distribution in the air duct can be changed, the pressure at the lower part of the air duct of the bladeless fan is increased, and the air outlet speed of the fan is more uniform.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1: is a schematic view of the air duct structure of the embodiment of the invention;
FIG. 2: is a side view of the air duct structure of the embodiment of the invention;
FIG. 3: the first air guiding section of the air guiding structure of the embodiment of the invention is a schematic structural diagram;
FIG. 4: a schematic structural view of a second wind guiding section of the wind guiding structure according to the embodiment of the present invention;
FIG. 5: is a top view of the air duct structure of the embodiment of the invention;
FIG. 6: is an exploded view of a bladeless fan according to an embodiment of the present invention;
FIG. 7: the noise contrast chart of the bladeless fan with the air guide structure and the bladeless fan without the air guide structure under the same air quantity is shown.
Wherein: 1-an air outlet part; 11-an air outlet; 121-a first wind guiding section; 122-a second wind guiding section; 123-a transition section; 2-an air inlet part; 21-an air inlet; 3-standard surface;
100-a base; 200-air duct structure; 300-a housing; 400-filtering with a screen; 500-air intake duct; 600-fan blades; 700-wind blade air-out guiding device.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides an air duct structure of a bladeless fan, as shown in fig. 1 and 2, the air duct structure includes an air outlet portion 1 and an air inlet portion 2, an air outlet duct is formed inside the air outlet portion 1, the air outlet duct has a certain extending length, a plurality of air outlets 11 are formed in the duct wall of the air outlet duct along the length direction of the duct wall, an air guide structure is formed on one side, away from the air outlets 11, of the duct wall of the air outlet duct, the air guide structure includes a first air guide section 121 and a second air guide section 122 which are arranged along the air flow direction, the first air guide section 121 is located at the upstream of the second air guide section 122, and the air outlet end of the second air guide section 122 extends to the top of the air outlet duct; the first air guide section 121 is a cambered surface gradually reducing towards the central axis of the air outlet duct, and the second air guide section 122 is a cambered surface gradually expanding towards the central axis of the air outlet duct; an air inlet 21 is formed in the air inlet portion 2, the air inlet 21 is communicated with an air outlet duct, and an air inlet end of the first air guiding section 121 extends to be connected with the air inlet portion 2. Air in the external environment enters the air outlet duct from the air inlet 21, is guided by the air guide structure and then is discharged from the air outlet 11.
The air guide structure of the embodiment belongs to a part of an air outlet duct of a bladeless fan, and mainly plays a role in pressurization, the first air guide section 121 is a contraction section, the arc-shaped wall surface of the contraction section contracts and expands towards the inside of the air duct, and the reduction of the static pressure of the air duct due to the reduction of the sectional area of the air duct and the increase of the static pressure due to the expansion of the sectional area can be known according to the Bernoulli equation; the curved line shape of the wall surface of the first wind guiding section 121 is similar to a wing airfoil shape so as to weaken the flow separation of the wall surface of the wind channel. The lower end of the second air guiding section 122 is connected with the expansion end of the contraction section, so that the air flow in the air duct can be guided to change the flow direction, the air flow direction is deflected from vertical to horizontal, the vortex at the top of the air duct is eliminated, the flow loss is reduced, and the air outlet air volume is improved.
The air guide structure of the embodiment can effectively eliminate larger eddy in the air duct and reduce eddy noise in the outlet air duct of the bladeless fan; the air flow in the air duct can be stabilized, the flow loss of the bladeless fan is reduced, and the air outlet volume is increased; the pressure distribution in the air duct can be changed, the pressure at the lower part of the air duct of the bladeless fan is increased, and the air outlet speed of the fan is more uniform.
In order to obtain better noise reduction and air volume increase effects, the present embodiment further defines the relative sizes of the first air guiding section 121 and the second air guiding section 122.
As shown in fig. 2 and 3, an included angle α is formed between a tangent line of the air inlet end of the first air guiding section 121 and a horizontal line1The included angle between the tangent line of the air outlet end and the horizontal line is beta1The following requirements are met: alpha is alpha1∈(40°,90°]，β1∈(40°,180°)。
Further optionally, a vertical plane at the air inlet end of first air guiding section 121 is set as standard surface 3, and a distance h from standard surface 3 to the farthest position of first air guiding section 121 is set as standard surface 31(ii) a The first wind guiding section 121 has a length L1Distance between the position of first wind guide segment 121 farthest from standard surface 3 and the wind inlet end of first wind guide segment 121 is L11And the distance between the air outlet end of the first air guiding section 121 and the air outlet end is L12，L1＝L11+L12The following requirements are met: h is1/L1In the range of 0.01 to 0.3, L11/L1In the range of 0 to 1.
As shown in fig. 2 and 4, an included angle α is formed between a tangent line of the air inlet end of the second air guiding section 122 and a horizontal line2Tangent line and horizontal line of air outlet endHas an included angle of beta2，α2∈(30°,90°]，β2∈(0°,90°)，β2＜α2。
Further alternatively, the deflection angle of the second wind guiding segment 122 is set to θ, and θ ═ α2-β2The following requirements are met: theta epsilon (0 deg., 45 deg.).
Further optionally, the length of the second wind guiding section 122 is L2The farthest distance between the standard surface 3 and the second wind guide section 122 is h2The following requirements are met: tan (. beta.) of2)＜h2/L2＜tan(α2)。
As shown in fig. 1 and fig. 2, the air guiding structure further includes a transition section 123, the transition section 123 is parallel to the central axis of the air outlet duct, the air inlet end of the transition section 123 is connected to the air outlet end of the first air guiding section, and the air outlet end is connected to the air inlet end of the second air guiding section 122.
Further optionally, the transition segment 123 has a length L3The following requirements are met: (L)2+L3)/(L1+L2+L3) In the range of 0.3 to 0.7.
Further optionally, the reference surface 3 is spaced from the transition 123 by a distance h3，h3≤h1。
In this embodiment, the connection surfaces of the first air guiding section, the transition section and the second air guiding section are in a shape of a corrugated wall surface, as shown in fig. 5, and the corrugated wall surface is in a sine distribution. The wavy wall surface can divide the air flow, so that the air flow is more stable, and the formation of vortex is reduced.
To obtain better vortex reduction, the width of the air outlet duct is L4The amplitude of the wave-shaped wall surface is A, and a sine formula needs to be satisfied: y-A sin (n pi. x/L)4) Wherein n is an odd number, L4The curve period is 2L for the element of/nA (0.1,6)4/n。
Further optionally, the air outlet end of the wavy wall surface extends to the top end of the air outlet duct, and an included angle between the wavy wall surface and the top end face of the air outlet duct is alpha3The following requirements are met: alpha is alpha3> 90 deg. The air guide structure of the embodiment can reduce the use noise of the bladeless fan, improve the sound quality and improve the sound qualityHigh user experience; the air outlet volume is increased, and the performance of the whole machine is improved; the air outlet is more uniform, and the air supply range is enlarged. In this embodiment, the air volume and noise of the bladeless fan with the air guiding mechanism and the bladeless fan without the air guiding mechanism at different rotation speeds are tested, and the test results are shown in the following table:
meanwhile, the inventor also tests the noise of the bladeless fan with the air guide mechanism and the noise of the bladeless fan without the air guide mechanism at different rotating speeds under the same air volume, wherein the air guide structure and the air guide structure are at the same air volume (124 m)3The noise comparison results under/h) are shown in FIG. 7.
According to the test structure, the noise is reduced by about 2.5dB under the same air quantity, and the air quantity is increased by 20m under the same noise3About/h, the improvement is 15 to 20 percent. Therefore, the air guide structure of the embodiment has obvious effects on improving air quantity and reducing air outlet noise. The bladeless fan of this embodiment is through setting up wind-guiding structure at the air-out wind channel, and the wind channel is earlier contract later the expansion in wind channel lower part wind channel, and the top designs the arc baffle, adopts the wavy wall. This novel wind-guiding structure can adjust pressure distribution about the wind channel to and eliminate the interior big vortex in the wind channel, thereby promote the amount of wind, even air-out, increase air supply range reduces pneumatic noise.
Further optionally, the air outlet portion 1 includes two air duct arms, air outlet branch channels are respectively formed inside the two air duct arms, the two air outlet branch channels form an air outlet channel, and the air inlet 21 is communicated with the air outlet branch channels; two wind channel arms clearance sets up, and the clearance between two wind channel arms forms and link up the wind channel, and air outlet 11 is seted up respectively to two wind channel arms towards one side that link up the wind channel, and one side that two wind channel arms deviate from air outlet 11 is formed with wind-guiding structure respectively.
The embodiment also provides a bladeless fan which is provided with the air duct structure. As shown in the exploded view of the bladeless fan shown in fig. 6, the overall structure of the bladeless fan mainly comprises a base 100, a housing 300, a filter screen 400, an air duct structure 200, a fan blade 600, a fan blade air outlet flow guide device 700, an air inlet duct 500 and other structures; the air outlet part 1 and the air inlet part 2 are integrally formed on the base 100.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (14)
1. An air channel structure of a bladeless fan is characterized by comprising
The air outlet structure comprises an air outlet part, an air outlet duct is formed inside the air outlet part, a plurality of air outlets are formed in one side of the air outlet duct wall along the length direction of the air outlet duct wall, an air guide structure is formed on the other side, away from the air outlets, of the air duct wall of the air outlet duct, the air guide structure comprises a first air guide section and a second air guide section which are arranged along the air flow direction, the first air guide section is located at the upstream of the second air guide section, and the air outlet end of the second air guide section extends to the top of the air outlet duct; the first air guide section forms a cambered surface which is gradually reduced towards the central axis of the air outlet duct, and the second air guide section forms a cambered surface which is gradually expanded towards the central axis of the air outlet duct;
the air inlet part is provided with an air inlet, the air inlet is communicated with the air outlet duct, and the air inlet end of the first air guide section extends to be connected with the air inlet part.
2. The fan duct structure as claimed in claim 1, wherein a vertical plane at the air inlet end of the first wind guiding section is set as a standard plane, and the standard plane is located at a distance h away from the first wind guiding section farthest from the first wind guiding section1(ii) a The length of the first air guide section is L1The distance between the position of the first wind guide section farthest from the standard surface and the wind inlet end of the first wind guide section is L11And the distance between the first wind guide section and the wind outlet end of the first wind guide section is L12，L1＝L11+L12The following requirements are met: h is1/L1In the range of 0.01 to 0.3, L11/L1In the range of 0 to 1.
3. The structure of claim 2, wherein the tangent line of the air inlet end of the first wind guiding section forms an angle α with the horizontal line1The included angle between the tangent line of the air outlet end and the horizontal line is beta1The following requirements are met: alpha is alpha1∈(40°,90°]，β1∈(40°,180°)。
4. The fan duct structure as claimed in claim 2 or 3, wherein the second wind guiding section has a length L2The distance between the standard surface and the farthest position of the second air guide section is h2The following requirements are met: tan (. beta.) of2)＜h2/L2＜tan(α2)。
5. The air duct structure of bladeless fan as claimed in claim 4, wherein an included angle α between a tangent line of the air inlet end of the second air guiding section and a horizontal line is2The included angle between the tangent line of the air outlet end and the horizontal line is beta2，α2∈(30°,90°]，β2∈(0°,90°)，β2＜α2。
6. The fan duct structure of claim 5, wherein the deflection angle of the second wind guiding segment is θ, θ ═ α2-β2The following requirements are met: theta epsilon (0 deg., 45 deg.).
7. The air duct structure of a bladeless fan according to claim 4, wherein the air guiding structure further comprises a transition section, the transition section is parallel to the central axis of the air outlet duct, the air inlet end of the transition section is connected to the air outlet end of the first air guiding section, and the air outlet end of the transition section is connected to the air inlet end of the second air guiding section.
8. The fan duct structure as claimed in claim 7, wherein the transition section has a length L3The following requirements are met: (L)2+L3)/(L1+L2+L3) In the range of 0.3 to 0.7.
9. The fan duct structure of claim 8, wherein the standard surface is spaced from the transition section by a distance h3，h3≤h1。
10. The structure of any one of claims 7 to 9, wherein a connecting surface of the first wind guiding section, the second wind guiding section and the transition section is a wavy wall surface, and the wavy wall surface is distributed in a sine shape.
11. The fan duct structure of claim 10, wherein the width of the outlet duct is L4The amplitude of the wavy wall surface is A, and a sine formula is required to be satisfied:
y＝Asin(nπ·x/L4) Wherein n is an odd number, L4The curve period is 2L for the element of/nA (0.1,6)4/n。
12. The air duct structure of a bladeless fan according to claim 11, wherein an air outlet end of the wavy wall surface extends to a top end of the air outlet duct, and an included angle α between the wavy wall surface and a top end surface of the air outlet duct is3The following requirements are met: alpha is alpha3＞90°。
13. The fan duct structure according to claim 1,
the air outlet part comprises two air duct arms, air outlet branch channels are respectively formed in the two air duct arms, the two air outlet branch channels form the air outlet channel, and the air inlet is communicated with the air outlet branch channels;
the air guide structure is characterized in that the two air duct arms are arranged in a clearance mode, a through air duct is formed between the two air duct arms in a clearance mode, the air outlet is formed in one side, facing the through air duct, of the two air duct arms, and the air guide structure is formed in one side, deviating from the air outlet, of the two air duct arms.
14. A bladeless fan, characterized in that it has a duct structure according to any one of claims 1-13.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013036460A (en) * | 2011-07-13 | 2013-02-21 | Panasonic Corp | Cool breeze machine |
| CN106762852A (en) * | 2016-11-15 | 2017-05-31 | 美的集团股份有限公司 | Fan head and bladeless fan |
| CN206269336U (en) * | 2016-11-03 | 2017-06-20 | 奥克斯空调股份有限公司 | A kind of air conditioner air deflector |
| CN207847976U (en) * | 2017-12-19 | 2018-09-11 | 广东美的环境电器制造有限公司 | It is a kind of for the fan head assembly of no leaf blowing apparatus and without leaf blowing apparatus |
| CN109931293A (en) * | 2017-12-19 | 2019-06-25 | 广东美的环境电器制造有限公司 | Bladeless fan and its head |
| CN111380197A (en) * | 2020-04-14 | 2020-07-07 | 宁波奥克斯电气股份有限公司 | Air guide assembly and air conditioner |
| CN211550083U (en) * | 2020-01-19 | 2020-09-22 | 广东美的环境电器制造有限公司 | Air supply device |
-
2021
- 2021-05-14 CN CN202110529947.1A patent/CN113187767B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013036460A (en) * | 2011-07-13 | 2013-02-21 | Panasonic Corp | Cool breeze machine |
| CN206269336U (en) * | 2016-11-03 | 2017-06-20 | 奥克斯空调股份有限公司 | A kind of air conditioner air deflector |
| CN106762852A (en) * | 2016-11-15 | 2017-05-31 | 美的集团股份有限公司 | Fan head and bladeless fan |
| CN207847976U (en) * | 2017-12-19 | 2018-09-11 | 广东美的环境电器制造有限公司 | It is a kind of for the fan head assembly of no leaf blowing apparatus and without leaf blowing apparatus |
| CN109931293A (en) * | 2017-12-19 | 2019-06-25 | 广东美的环境电器制造有限公司 | Bladeless fan and its head |
| CN211550083U (en) * | 2020-01-19 | 2020-09-22 | 广东美的环境电器制造有限公司 | Air supply device |
| CN111380197A (en) * | 2020-04-14 | 2020-07-07 | 宁波奥克斯电气股份有限公司 | Air guide assembly and air conditioner |
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| CN113187767B (en) | 2024-02-23 |
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