CN103375440B - A kind of without blade fan - Google Patents
A kind of without blade fan Download PDFInfo
- Publication number
- CN103375440B CN103375440B CN201210127081.2A CN201210127081A CN103375440B CN 103375440 B CN103375440 B CN 103375440B CN 201210127081 A CN201210127081 A CN 201210127081A CN 103375440 B CN103375440 B CN 103375440B
- Authority
- CN
- China
- Prior art keywords
- exhaust outlet
- collar
- fan
- inner ring
- blade fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003032 molecular docking Methods 0.000 claims abstract description 5
- 230000011218 segmentation Effects 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 7
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 241001075561 Fioria Species 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
Classifications
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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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially 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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of without blade fan, comprise: air channel, it is docked in the axial direction by first collar and second collar and forms, a cavity is formed between its two collar after docking, first collar is provided with exhaust outlet, exhaust outlet is evenly arranged along the first collar circumference, and exhaust outlet is divided into inner ring exhaust outlet and the outer shroud exhaust outlet of annular, and the inner surface of first collar is in the state expanded gradually towards exhaust outlet; To calm the anger blower fan, fan casing and described air channel through, air-flow is calmed the anger after blower fan is pressed into described air channel and is discharged through described exhaust outlet.The present invention, by arranging at annular passage without the exhaust outlet towards the direct ejection of convex surfaces, is no longer attached at protruding surface, adapts to the requirement of various different airflow shaped, the flow direction neatly after making flow shedding exhaust outlet.
Description
Technical field
The present invention relates to a kind of fan, particularly a kind of without blade fan.
Background technique
Fan with fan blade needs the protecting wire net arranging caged in use, and not only make efficiency is low for protecting wire net, cost is high, and Safety performance can not ensure completely, has certain danger especially to children.
Additionally use in prior art without blade fan, namely instead of early stage fan-leaf fan with annular passage, air channel has the exhaust outlet around air channel pointing to one end, exhaust outlet has protruding surface can produce negative pressure to attract the outer gas stream of the annular passage the other end, thus produces the effect of air-flow amplification.
Above-mentioned without blade fan for exhaust outlet projection, the shortcoming of prior art is: although the surface energy of annular exhaust outlet projection plays certain air-flow amplification, but the surface of projection need according to settings such as the flow velocitys of the material near exhaust outlet, surface state that material can reach and air-flow, the factor related to is a lot, therefore in the application of reality, often the amplification effect of air-flow is not fairly obvious, and the main source of air-flow remains the blower fan be connected with air channel; On the other hand, in order to adapt to the needs that air-flow amplifies, making the exhaust outlet in air channel have single structure, the air-flow of suitable sectional shape, the flow direction cannot be exported according to the actual needs.
Summary of the invention
The present invention is to overcome above-mentioned defect of the prior art, sets out air port, adapt to the requirement of various different airflow shaped, the flow direction neatly by the surface without projection at annular passage.
For achieving the above object, the invention provides a kind of without blade fan, comprise: air channel, it is docked in the axial direction by first collar and second collar and forms, first collar, second collar are mutually corresponding annular groove, a cavity is formed between its two collar after docking, first collar is provided with exhaust outlet, exhaust outlet is evenly arranged along the first collar circumference, exhaust outlet is divided into inner ring exhaust outlet and the outer shroud exhaust outlet of annular, and the surface of the annular groove inboard portion of first collar is in the state expanded gradually towards exhaust outlet; To calm the anger blower fan, fan casing and described air channel through, air-flow is calmed the anger after blower fan is pressed into described air channel and is discharged through described exhaust outlet.
In technique scheme, the surface of the annular groove inboard portion of first collar can be the conical surface of smooth gradual change expansion.
In technique scheme, the surface of the annular groove inboard portion of first collar can also be the stepped conical surface expanded step by step.
In technique scheme, by the segmentation slice separation of annular between inner ring exhaust outlet and outer shroud exhaust outlet, segmentation thin slice is connected with the first collar one by the radial gusset along thin slice circumference spaced set, and the angle of inclination of segmentation thin slice is according to the air-out direction setting preset.
In technique scheme, the surface of the annular groove inboard portion of first collar circumferentially can arrange auxiliary air-outlet by uniform intervals.
In technique scheme, inner ring exhaust outlet and outer shroud exhaust outlet are arranged on the transitional surface between the stepped conical surface expanded step by step respectively, and uniform intervals setting respectively between the exhaust outlet of same ring.
In technique scheme, be crisscross arranged between the exhaust outlet that inner and outer rings is corresponding, make not easily to occur between inner and outer rings air-out air-flow mutually interfering, particularly when the air-flow of inner and outer rings exhaust outlet exists interference.
Compared with prior art, the present invention, by the exhaust outlet at the direct ejection air-flow of annular passage, adapts to the requirement of various different airflow shaped, the flow direction neatly after making flow shedding exhaust outlet.
Accompanying drawing explanation
Fig. 1 is the exploded perspective view (backsight) of the present invention without the air channel of blade fan embodiment 1;
Fig. 2 is the main sectional view of the present invention without the air channel of blade fan embodiment 1;
Fig. 3 is the exploded perspective view (backsight) of the present invention without the air channel of blade fan embodiment 2;
Fig. 4 is the main sectional view of the present invention without the air channel of blade fan embodiment 2;
Fig. 5 is the exploded perspective view (forward sight) of the present invention without the air channel of blade fan embodiment 3;
Fig. 6 is the main sectional view of the present invention without the air channel of blade fan embodiment 3;
Fig. 7 is the exploded perspective view (comprise air channel, blower fan, the first centrifugal impeller and base etc.) of the present invention without blade fan embodiment 1;
Fig. 8 is the stereogram of the present invention without the second centrifugal impeller of blade fan embodiment 1;
Fig. 9 is that the A-A of Fig. 8 is to sectional view;
Figure 10 is the present invention without the main sectional view (bilobed wheel, be not with base) of blade fan embodiment 1;
Figure 11 is the main sectional view (single impeller, band base) of the present invention without blade fan embodiment 1;
Figure 12 is the stereogram (base be fixing clamp) of the present invention without blade fan embodiment 1;
Figure 13 is the stereogram (base be suction tray) of the present invention without blade fan embodiment 1;
Figure 14 is the stereogram (base be the fixed tray that can horizontally rotate) of the present invention without blade fan embodiment 1.
The reference character marked in above accompanying drawing is respectively:
1-air channel, 11-second collar, 12-first collar, 121-shell, 121a-shell, 122-separator sheet, 123-first gusset, 124-second gusset, 125-intake grill, 126-outer shroud exhaust outlet, 126a-outer shroud exhaust outlet, 127-inner ring exhaust outlet, 127a-inner ring exhaust outlet, 128b-auxiliary air-outlet, 2-blower fan, 2a-single impeller blower fan, 21-casing, 211-connects bayonet socket, 212-directing vane, 213-guide cone, 22-drive motor, 221-rotating shaft, 23-impeller, 23a-impeller, 231a-impeller intake grill, 232a-blade, 24-shell air inlet, 25-base, 251-pitch regulation groove, 252-circular arc guiding face, 253-rotating shaft, 3-fixing clamp, 3a-fixing sucking disk, 3b-level turns to fixed base, 31-clamp, 32-horizontally rotates adjustment rotating shaft, 32b-horizontally rotates adjustment rotating shaft, 33-pitching rotates and regulates rotating shaft.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Embodiment 1
The present invention without blade fan embodiment 1 air channel as shown in Figure 1, 2, i.e. air channel 1, axially docked by first collar 12 and second collar 11 and fasten and form, first collar 12, second collar 11 is mutually corresponding annular groove, after docking, two collar inside form a cavity, and overall in ring after docking, have exhaust outlet in first collar 12, exhaust outlet is arranged around first collar 12 uniform intervals, and towards waiting side of drying.
First collar 12 is divided into shell 121 and inner ring (see Fig. 1), shell 121 and inner ring constitute the annular groove of first collar 12, inner ring constitutes the surface of the annular groove inboard portion of first collar 12, and exhaust outlet is around on the circular sliding slopes face be arranged between the shell 121 of first collar 12 and inner ring side surface.The radial gusset that shell 121 and inner ring pass through spaced set is one-body molded, along the first collar circumference, one circle segmentation thin slice 122 is set, radial gusset is divided into the first gusset 123 and the second gusset 124 by this segmentation thin slice 122, form double-deck exhaust outlet, i.e. inner ring exhaust outlet 127 and outer shroud exhaust outlet 126 (see Fig. 2), segmentation thin slice 122 parallels to the axis setting, also can be that the taper formed an angle with axis shape is arranged, with the flow direction of the corresponding exit flow of correspondence.The internal surface of the first collar 12 inner ring is the conical surface expanded gradually towards exhaust outlet.
Further as shown in Fig. 1,2,7,10, the blower fan 2 that embodiment 1 relates to, is connected with the intake grill 125 in air channel by connecting port, and air-flow is discharged through exhaust outlet after being pressed into air channel by blower fan 2.
Further as shown in Fig. 7,10, the casing 21 of blower fan 2 is the Circular Cylindrical Thin Shells body of horizontal cross, drive motor 22 is installed in casing 21, drive motor 22 two ends have dual output rotating shaft 221 (see Figure 10), the axis of rotating shaft 221 is consistent with the axis of the Circular Cylindrical Thin Shells body of casing 21 or in the same way, rotating shaft 221 is stretched out from the two ends of motor 22 and is positioned at casing 21.Impeller 23 is centrifugal structure, overall cylindrical, its ring perimeter surface establishes centrifugal blade impeller 23, the quantity of impeller 23 is two, be fastenedly connected with the machine shaft 221 being positioned at casing respectively, the intake grill of impeller 23 is corresponding with the two ends intake grill 24 being arranged at cylindrical shell 21, and casing 21 intake grill 24 is the long strip through hole (see Fig. 7) of radial arrangement or cellular via-hole array.The intake grill 125 of air-flow through air channel 1 under the driving of impeller 23 entered from intake grill 24 level of casing 21 enters annular passage 1, and then is blown out by outer shroud exhaust outlet 126 and inner ring exhaust outlet 127.In order to the air-flow fed into air channel leads, the exhaust outlet of casing 21 is round structure, the outer surface of the exhaust outlet of fan casing 21 is provided with the connection bayonet socket 211 fixing with air channel 1, setting-in directing vane 212 in the exhaust outlet of casing 21, the median plane of directing vane 212 is provided with protruding guide cone 213 to air channel 1, the internal surface of the circular frame of directing vane 212 and the circular exhaust outlet of fan casing 21 is suitable.
Further as shown in Figure 8,9, impeller 23 also can use alternative impeller 23a, and impeller 23a has the arc shaped blade 232a (see Fig. 9) of intake grill 231a (see Fig. 8) and the centripetal extension of axially protruding.Certainly, other approximate Impeller Design can also be adopted, as long as ensure air-flow to import in air channel.
Of the present invention is portable without blade fan, and therefore its supporting base can be designed to the structure of various ways.As shown in Figure 7, can be placed by mounting base 25 without blade fan or inhale on smooth desktop or other smooth surface, base has pitch regulation groove 251 and circular arc guiding face 252, uses wind axis line and can do pitching angle adjustment.As shown in figure 12, can also fix a link arm at casing 21 rear portion, blower fan uses fixing clamp 3 to fix, and namely arranges retaining clip 31 at the end of link arm.As shown in figure 13, sucker base 3a also can be used to be fixed, link arm has to horizontally rotate and regulates rotating shaft 32 and pitching to rotate to regulate rotating shaft 33, and this mounting structure can be fixed on without blade fan in vertical smooth flat.As shown in figure 14, fan casing 21 realizes stable putting with turning to fixed base 3b and horizontal plane by level, horizontally rotates to regulate in rotating shaft 32b insertion fan casing 21 to connect, and casing 21 can regulate rotating shaft 32b to realize adjustment horizontal rotation angle around horizontally rotating.
Further as shown in figure 11, when air quantity demand is little, also can use single impeller blower fan, namely single impeller blower fan 2a is connected with air channel 1, for air channel provides wind regime, blower fan 2a only has single intake grill, and be applicable to less the using without blade fan of air quantity requirement, its balance is not as good as two fans structure; Fan casing, by integrated bottom of shell and base 25 grafting, realizes connecting and adjusting pitch angle by rotating shaft 253 simultaneously, other Placement aforesaid can certainly be adopted to fix.
Embodiment 2
Embodiment 2 is as Fig. 3, shown in 4, be that first collar 12a of air channel 1a and the second collar 11a is connected with the difference of embodiment 1, wherein, the surface of the shell 121a annular groove inboard portion of the first collar 12a adopts the stepped conical surface expanded step by step, exhaust outlet is spaced one by one inner ring exhaust outlet 127a around axis and outer shroud exhaust outlet 126a, in, outer shroud exhaust outlet is arranged on the transitional surface of the conical surface that the stepped ring of the first collar 12a expands step by step respectively, for making air-out more even, in, outer shroud exhaust outlet 127a, between 126a close on and be crisscross arranged (owing to analysing and observe the restriction of position between corresponding exhaust outlet, inner ring exhaust outlet 127a only can be shown) in Fig. 4.
Embodiment 3
Embodiment 3 as shown in Figure 5,6, namely on the basis of embodiment 1, auxiliary air-outlet is increased, the conical surface of the annular groove inboard portion of first collar in air channel 1 is provided with auxiliary air-outlet 128b, and auxiliary air-outlet 128b is equidistantly arranged around the inner side conical surface of first collar.Auxiliary air-outlet arranges through hole at the inner surface of first collar, and arrange the guide wall of diagram shape in the port of through hole, and the wind direction of the wind direction of auxiliary air-outlet and aforementioned conventional exhaust outlet is consistent.
The present invention, by the exhaust outlet arranging directly ejection air-flow without convex surfaces at annular passage, is no longer attached at protruding surface, can adapts to the requirement of various different airflow shaped, the flow direction neatly after making flow shedding exhaust outlet.
Be only several specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (8)
1. without a blade fan, it is characterized in that, comprising:
Air channel, it is docked in the axial direction by first collar and second collar and forms, and first collar, second collar are mutually corresponding annular groove, form a cavity after docking between its two collar; Described first collar is divided into shell and inner ring, described shell and described inner ring constitute the annular groove of described first collar, described inner ring constitutes the surface of the annular groove inboard portion of described first collar, and the exhaust outlet of described first collar is around on the circular sliding slopes face be arranged between described shell and described inner ring side surface; Exhaust outlet is divided into inner ring exhaust outlet and the outer shroud exhaust outlet of annular; The surface of the annular groove inboard portion of described first collar is in the state expanded gradually towards exhaust outlet;
To calm the anger blower fan, fan casing and described air channel through, air-flow is calmed the anger after blower fan is pressed into described air channel and is discharged through described exhaust outlet.
2. according to claim 1 without blade fan, it is characterized in that, the surface of the annular groove inboard portion of described first collar is the conical surface that smooth gradual change expands.
3. according to claim 1 without blade fan, it is characterized in that, the surface of the annular groove inboard portion of described first collar is the stepped conical surface expanded step by step.
4. according to claim 2 without blade fan, it is characterized in that, described exhaust outlet is around being arranged on the axial end of annular groove of first collar.
5. according to claim 4 without blade fan, it is characterized in that, by the segmentation slice separation of annular between inner ring exhaust outlet and outer shroud exhaust outlet, described segmentation thin slice is connected with described first collar one by the radial gusset along thin slice circumference spaced set, and the angle of inclination of segmentation thin slice is according to the air-out direction setting preset.
6. according to claim 5 without blade fan, it is characterized in that, the surface of the annular groove inboard portion of described first collar circumferentially uniform intervals arranges auxiliary air-outlet.
7. according to claim 3 without blade fan, it is characterized in that, described inner ring exhaust outlet and outer shroud exhaust outlet are arranged on the transitional surface between the described stepped conical surface expanded step by step respectively, and uniform intervals setting respectively between the exhaust outlet of same ring.
8. according to claim 7 without blade fan, it is characterized in that, be crisscross arranged between the exhaust outlet that described inner and outer rings is corresponding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210127081.2A CN103375440B (en) | 2012-04-26 | 2012-04-26 | A kind of without blade fan |
| PCT/CN2012/076522 WO2013159424A1 (en) | 2012-04-26 | 2012-06-06 | Bladeless fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210127081.2A CN103375440B (en) | 2012-04-26 | 2012-04-26 | A kind of without blade fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103375440A CN103375440A (en) | 2013-10-30 |
| CN103375440B true CN103375440B (en) | 2016-04-13 |
Family
ID=49461083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210127081.2A Expired - Fee Related CN103375440B (en) | 2012-04-26 | 2012-04-26 | A kind of without blade fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103375440B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12264687B2 (en) | 2021-02-26 | 2025-04-01 | Dyson Technology Limited | Air amplifier |
| US12297841B2 (en) | 2021-02-26 | 2025-05-13 | Dyson Technology Limited | Air amplifier |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715520A (en) * | 2016-04-16 | 2016-06-29 | 任文华 | Fan |
| CN106015046B (en) * | 2016-06-24 | 2019-11-12 | 珠海格力电器股份有限公司 | Tower fan structure |
| WO2018059041A1 (en) * | 2016-09-30 | 2018-04-05 | 广东美的环境电器制造有限公司 | Head for bladeless fan and bladeless fan |
| CN106246602B (en) * | 2016-09-30 | 2021-09-21 | 广东美的环境电器制造有限公司 | Machine head for bladeless fan and bladeless fan |
| CN106246601B (en) * | 2016-09-30 | 2020-06-26 | 广东美的环境电器制造有限公司 | Handpieces and Bladeless Fans for Bladeless Fans |
| CN107489653A (en) * | 2017-09-30 | 2017-12-19 | 广东美的环境电器制造有限公司 | Bladeless fan and head |
| CN107477026A (en) * | 2017-09-30 | 2017-12-15 | 广东美的环境电器制造有限公司 | Bladeless fan and head |
| CN110131182A (en) * | 2019-06-13 | 2019-08-16 | 杭州老板电器股份有限公司 | A central dual-axial flow centrifugal fan |
| CN110685941B (en) * | 2019-10-31 | 2025-05-06 | 应辉 | Bladeless fan that purifies the air |
| CN111336123A (en) * | 2020-04-03 | 2020-06-26 | 广东省无叶科技有限公司 | Air amplification type blower |
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| CN101749289A (en) * | 2008-12-11 | 2010-06-23 | 戴森技术有限公司 | Fan |
| CN201874899U (en) * | 2010-11-29 | 2011-06-22 | 任文华 | Bladeless fan device |
| CN202091268U (en) * | 2011-04-29 | 2011-12-28 | 李德正 | Foldable bladeless fan |
| CN101825101B (en) * | 2009-03-04 | 2012-02-22 | 戴森技术有限公司 | fan assembly |
| CN202187935U (en) * | 2011-07-12 | 2012-04-11 | 蔡炳照 | Mounting structure of bladeless electric fan power device |
| CN202646181U (en) * | 2012-04-26 | 2013-01-02 | 余姚市华昌电器制造有限公司 | Non-blade fan |
-
2012
- 2012-04-26 CN CN201210127081.2A patent/CN103375440B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749289A (en) * | 2008-12-11 | 2010-06-23 | 戴森技术有限公司 | Fan |
| CN101825101B (en) * | 2009-03-04 | 2012-02-22 | 戴森技术有限公司 | fan assembly |
| CN201874899U (en) * | 2010-11-29 | 2011-06-22 | 任文华 | Bladeless fan device |
| CN202091268U (en) * | 2011-04-29 | 2011-12-28 | 李德正 | Foldable bladeless fan |
| CN202187935U (en) * | 2011-07-12 | 2012-04-11 | 蔡炳照 | Mounting structure of bladeless electric fan power device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12264687B2 (en) | 2021-02-26 | 2025-04-01 | Dyson Technology Limited | Air amplifier |
| US12297841B2 (en) | 2021-02-26 | 2025-05-13 | Dyson Technology Limited | Air amplifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103375440A (en) | 2013-10-30 |
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Granted publication date: 20160413 Termination date: 20180426 |