CN102251994A - Bladeless fan - Google Patents
Bladeless fan Download PDFInfo
- Publication number
- CN102251994A CN102251994A CN2010101791469A CN201010179146A CN102251994A CN 102251994 A CN102251994 A CN 102251994A CN 2010101791469 A CN2010101791469 A CN 2010101791469A CN 201010179146 A CN201010179146 A CN 201010179146A CN 102251994 A CN102251994 A CN 102251994A
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- China
- Prior art keywords
- nozzle
- air
- flow
- fan
- flabellum
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- 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.)
- Pending
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Classifications
-
- 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
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- 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
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- 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)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention relates to a bladeless fan. The bladeless fan comprises a first spray nozzle, a second spray nozzle and an air flow generation device. The first spray nozzle is provided with an inner passage. The air flow generation device is communicated with the inner passage and the second spay nozzle. The bladeless fan can provide more uniform air flow.
Description
Technical field
The present invention relates to a kind of fan, relate in particular to a kind of no flabellum fan that uniform air flow can be provided.
Background technique
The driving mechanism that the conventional domestic fan generally comprises rotating shaft, one group of flabellum that can rotate around the shaft and is used to drive the flabellum rotation.General flabellum group is provided with near the user, when the flabellum group is rotated at the indoor air-flow that blows to the user that provides, thereby this air-flow accelerated heat is distributed and the water evaporation at user's body surface place makes the people feel nice and cool.
Because the flabellum of fan all is in the state of high speed rotating in the course of the work, because fan must keep good ventilated environment and flabellum can not be sealed, therefore the guard of ventilation can only be installed in addition, but there is the hidden danger on the safety in guard.For example, tiny article fall into fan and may be excited and the bullet wound user by the flabellum of high speed rotating, and have child's family often to worry that child can stretch into fan with finger and injured.In addition, after through the use between often, can adhere to dust or oil smoke on the guard, and the extremely difficult cleaning of guard.Further, because the conventional domestic fan is to promote air flows by flabellum, and the air-flow that the multi-disc flabellum blows out excites mutually and makes the whole air-out of fan even inadequately.
For addressing the above problem, Britain wears gloomy (Dyson), and company develops a kind of no flabellum fan, the no flabellum fan of this kind is with the ramp inwall ejection of high velocity air from a propeller-like, and because Coanda effect (Coanda Effect), this high velocity air can invest the ramp inwall, thereby and can drive on every side air-flow and flow together the smooth air that blows to the user can be provided.Than conventional fan, it has simple in structure, is easy to advantages such as cleaning, safety.Yet it is, therefore slow more the closer to the air-flow of ramp central axis because most of air-flow is to be driven by high velocity air.That is to say that the air-flow that this no flabellum fan blows out is still even inadequately.
Summary of the invention
In view of this, be necessary to provide a kind of no flabellum fan that uniform air flow can be provided.
The embodiment of the invention provides a kind of no flabellum fan, and it comprises first nozzle, second nozzle and air flow-producing device.First nozzle has an inner passage.Air flow-producing device is connected with the inner passage and second nozzle.
In other embodiments of the invention, further be provided with a vertebra shape body in the second above-mentioned nozzle, vertebra shape body has the coanda surface, is used to guide the air-flow that goes out from this second nozzle ejection.
In other embodiments of the invention, the angle between the coanda of above-mentioned vertebra shape body surface and this second nozzle center axle is between 7 to 20 degree.
In other embodiments of the invention, the minimum constructive height in gap is between 1 to 5 millimeter between the inwall of the coanda of above-mentioned vertebra shape body surface and this second nozzle.
In other embodiments of the invention, stretch with respect to the central shaft symmetry edge of this second nozzle on the coanda surface of above-mentioned vertebra shape body.
In other embodiments of the invention, the second above-mentioned nozzle in the form of a ring.
In other embodiments of the invention, above-mentioned first nozzle also comprises the coanda surface of a spout that is connected with the inner passage and an adjacent spout, spout is used to spray the air-flow in this inner passage, and the coanda surface is used to guide the air-flow that ejects from this spout to move in a certain direction.
In other embodiments of the invention, the first above-mentioned nozzle comprises at least one wall body, and this wall body surrounds this inner passage, and an end of this wall body is bent to form this spout.
In other embodiments of the invention, above-mentioned first nozzle in the form of a ring, this second nozzle is positioned at the middle part of this first nozzle.Also second nozzle also can be positioned on the central shaft of this first nozzle.
In the above-mentioned no flabellum fan,, can strengthen the air-flow at the first nozzle center axle place, thereby uniform airflow more can be provided owing to be provided with second nozzle in the central axis of first nozzle.And further, also can in second nozzle, the coanda surface be set so that air-flow is more even.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
The front elevation of the no flabellum fan that Fig. 1 provides for first embodiment of the invention.
The schematic perspective view of first nozzle of the no flabellum fan that Fig. 2 provides for first embodiment of the invention.
Fig. 3 is the generalized section of Fig. 1 along the III-III line.
Fig. 4 is the local enlarged diagram of area I V among Fig. 3.
The generalized section of the no flabellum fan that Fig. 5 provides for second embodiment of the invention.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to embodiment, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
See also Fig. 1, the front elevation of the no flabellum fan 100 that it provides for first embodiment of the invention.No flabellum fan 100 comprises first nozzle 1 and second nozzle 6 of ring-type.First nozzle 1 has a central opening 2.See also Fig. 2 to Fig. 4, first nozzle 1 also has inner passage 10, spout 12, reaches the coanda surface 14 that adjacent spout 12 is provided with.Being arranged so that of coanda surface 14 is that eject and amplify via Coanda effect along coanda surface 14 airflow flowing from spout 12.First nozzle 1 links to each other with a base 16 and is supported by base 16.Base 16 has a shell 18.A plurality of selector buttons 20 are installed on the shell 18.Selector button 20 is used for the no flabellum fan 100 of operation control.
Fig. 3 and Fig. 4 further demonstrate the details of no flabellum fan 100.Base 16 further comprises the air inlet 24 that is formed on the shell 18.And be mounted with air flow-producing device 3 in the base 16, air flow-producing device comprises motor 22, impeller 30, reaches diffuser 32.In the present embodiment, motor 22 is a DC Brushless Motor, and it is fixed on base 16 inwalls by a motor seat 26.Impeller 30 is installed in an end of the running shaft of motor 22, and diffuser 32 is arranged on the leeward of impeller 30.Diffuser 32 comprises a fixed disc with spiral blade.
Leading to the inlet 34 of impeller 30 is connected with air inlet 24 on the shell 18.The outlet 36 of diffuser 32 and the discharge air-flow of impeller communicate with the passage of hollow in the base 16, and further are directed at the inner passage 10 of first nozzle 1.Motor 22 links to each other with an external power supply (figure does not show).
See also Fig. 3 and Fig. 4, first nozzle 1 substantially in the form of a ring.In the present embodiment, first nozzle, 1 diameter is about 350 millimeters, yet first nozzle 1 also can have other diameter, for example 300 millimeters.Inner passage 10 equally in the form of a ring.First nozzle 1 is formed by at least one wall body.In the present embodiment, first nozzle 1 comprises an inwall 38 and an outer wall 40, and inwall 38 and outer wall 40 are tubular and are folded makes that inwall 38 and outer wall 40 two ends are close mutually.Inwall 38 and outer wall 40 define spout 12 jointly.Spout 12 is stretched around a central shaft X edge.Spout 12 has a rake 42, the formation outlet 44 thereby rake 42 narrows down gradually.In other words, outlet 44 is the gap between inwall 38 and the outer wall 44.The width W (being the edge of outer wall 38 and the minimum range between the coanda surface 14) of outlet 44 can be between 1 millimeter to 5 millimeters.Depend on performance requirement for the selection of concrete product width to fan.In the present embodiment, outlet 44 width is 1.3 millimeters, and spout 12 and export 44 with inner passage 10 coaxial settings.
No flabellum fan 100 further comprises an air shooter 62.Air shooter 62 two ends are connected with the outlet 36 of second nozzle 6 and diffuser 32 respectively.In the present embodiment, second nozzle 6 and the 1 coaxial setting of first nozzle.Yet be appreciated that second nozzle 6 also can not be provided with together with first nozzle 1, and the central shaft of second nozzle 6 also can be angled with the central shaft of first nozzle 1, for example 10 to 30 degree.The diameter of second nozzle 6 is about 50 millimeters, yet second nozzle 6 also can have other diameters, for example 10 to 100 millimeters.Second nozzle 6 can be the vertebra shape substantially, and its diameter can reduce to the leeward of no flabellum fan 100 gradually from the end near air shooter 62.Further, in second nozzle 6 a vertebra shape body 64 can be set.Vertebra shape body 64 has coanda surface 66.Distance D between coanda surface 66 and nozzle 6 inwalls can be between 1 millimeter to 5 millimeters.Angle between the central shaft of coanda surface 66 and first nozzle 1 and second nozzle 6 can be between 7 to 20 degree.In addition, second nozzle 6 is not limited to above-mentioned structure, for example, sees also Fig. 5, and second nozzle 6 also can be an end of air shooter 62, and vertebra shape body 64 is not set in it.
No flabellum fan 100 operation described above are as follows, and when the user pressed suitable button 20, motor 22 was driven, and air is inhaled into no flabellum fan 100 via air inlet 24.In the present embodiment, the speed that sucks air is about 20-30 and rises per second (L/S), is preferably 27L/S.Air arrives the inlet 34 of impeller 30 by shell 18 along the direction shown in the arrow F among Fig. 3.The air-flow that the air-flow that leaves diffuser 32 is discharged with impeller 30 is divided into two stocks and does not enter inner passage 10 from opposite direction, enters air-flow equally in the air shooter 62 in addition.Be compressed the air-flow formation main air flow that enters spout 12 and further be compressed ejection outlet 44, be compressed the air-flow that enters air shooter 62 and further be compressed out second nozzle 6 and form time air-flow.
Thereby the primary and secondary air-flow is penetrated the back and is sucked more gas at air inlet 24 places formation low pressure area in no flabellum fan 100.No flabellum fan 100 sprays high velocity airs by first nozzle 1 and second nozzle 6 and exports via opening 2 after running.Main air flow flows along coanda surperficial 14 and diffusing surface 46, and inferior air-flow flows along coanda surperficial 66, and attracts the gas of external environment condition to enter opening 2 formation time secondary airs respectively because the Coanda effect main air flow reaches time air-flow.The part of secondary air can flow along diffusing surface 46 or coanda surface 66 equally.Secondary air converges the total air flow that common formation does not have flabellum fan 100 by opening 2 and with the primary and secondary air-flow, and its injection flow is greatly about 500 to 700L/S.As can be seen, because the amplification of Coanda effect, total air flow is much larger than the flow of primary and secondary air-flow.In addition because the existence of second nozzle 6 is strengthened the air-flow of nozzle 1 central axis of winning, and since want the amplification of Coanda effect make between second nozzle 6 and first nozzle 1 air-flow all to some extent the uniformity of increase and air-flow increase greatly.
The laminar airflow of above-mentioned amplification and generation make one stably air-flow continue blow to user before first nozzle 1.Be about 400 to 500L/S at gas flow from the distance (about 1000 to 1200 millimeters) of first nozzle, 1 about three orifice sizes.The flow velocity of air-flow is about 3 to 4 metre per second (m/s)s.Higher flow velocity can obtain by the angle that reduces coanda surface 14 and coanda surface 66 and central shaft X.Littler angle is concentrated the airflow direction that ejects, but its total discharge decreases.On the contrary, higher total discharge can obtain by the angle that increases coanda surface 14 and coanda surface 66 and central shaft X, but this moment, air-flow velocity reduces.Therefore not having the performance of flabellum fan 100 can regulate with the angle of central shaft X by coanda surface 14 and coanda surface 66.
The present invention is not limited to the foregoing description, and for example, no flabellum fan 100 also can have different height and diameter, and can be made into various ways such as desk fan, stand fan, ceiling fan, perhaps the hand-held fan.Air flow-producing device can be motor or other air emittors, for example a blower or a vacuum source.Motor can be alternating current impression motor or DC Brushless Motor.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. no flabellum fan comprises:
First nozzle, it has an inner passage;
An air flow-producing device is connected with this inner passage;
It is characterized in that this no flabellum fan also comprises second nozzle that is communicated with this air flow-producing device.
2. no flabellum fan as claimed in claim 1 is characterized in that, this second nozzle further is provided with a vertebra shape body, and this vertebra shape body has the coanda surface, is used to guide the air-flow that goes out from this second nozzle ejection.
3. no flabellum fan as claimed in claim 2 is characterized in that, the coanda surface of this vertebra shape body and the angle between this second nozzle center axle are between 7 to 20 degree.
4. no flabellum fan as claimed in claim 2 is characterized in that, the minimum range between the coanda surface of this vertebra shape body and the inwall of this second nozzle is between 1 to 5 millimeter.
5. no flabellum fan as claimed in claim 2 is characterized in that, stretch with respect to the central shaft symmetry edge of this second nozzle on the coanda surface of this vertebra shape body.
6. no flabellum fan as claimed in claim 1 is characterized in that this second nozzle in the form of a ring.
7. no flabellum fan as claimed in claim 1, it is characterized in that, first nozzle also comprises the coanda surface of a spout that is connected with this inner passage and this spout of vicinity, this spout is used to spray the air-flow in this inner passage, and this coanda surface is used to guide the air-flow that ejects from this spout to move in a certain direction.
8. no flabellum fan as claimed in claim 7 is characterized in that this first nozzle comprises at least one wall body, and this wall body surrounds this inner passage, and an end of this wall body is bent to form this spout.
9. no flabellum fan as claimed in claim 1 is characterized in that, this first nozzle in the form of a ring, this second nozzle is positioned at the middle part of this first nozzle.
10. no flabellum fan as claimed in claim 9 is characterized in that this second nozzle is positioned on the central shaft of this first nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101791469A CN102251994A (en) | 2010-05-21 | 2010-05-21 | Bladeless fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101791469A CN102251994A (en) | 2010-05-21 | 2010-05-21 | Bladeless fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102251994A true CN102251994A (en) | 2011-11-23 |
Family
ID=44979486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101791469A Pending CN102251994A (en) | 2010-05-21 | 2010-05-21 | Bladeless fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102251994A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095236A (en) * | 2011-02-17 | 2011-06-15 | 曾小颖 | Ventilation device |
| CN102818323A (en) * | 2012-08-02 | 2012-12-12 | 青岛海信日立空调系统有限公司 | Heat pump air-conditioning system based on jet blowing |
| US20130243588A1 (en) * | 2012-03-13 | 2013-09-19 | Yi-Sheng Lo | Bladeless fan |
| CN103644150A (en) * | 2013-12-27 | 2014-03-19 | 四川迈铁龙科技有限公司 | Efficient jet flow fan |
| CN105864078A (en) * | 2016-06-21 | 2016-08-17 | 陆汉明 | Novel fan |
| EP3674559A1 (en) * | 2018-12-24 | 2020-07-01 | LEONARDO S.p.A. | Jet fan and vehicle comprising such a fan |
| RU2792497C2 (en) * | 2018-12-24 | 2023-03-22 | ЛЕОНАРДО С.п.А. | Jet fan and vehicle containing such fan |
-
2010
- 2010-05-21 CN CN2010101791469A patent/CN102251994A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095236B (en) * | 2011-02-17 | 2013-04-10 | 曾小颖 | Ventilation device |
| CN102095236A (en) * | 2011-02-17 | 2011-06-15 | 曾小颖 | Ventilation device |
| US9217445B2 (en) * | 2012-03-13 | 2015-12-22 | Yi-Sheng Lo | Fan |
| US20130243588A1 (en) * | 2012-03-13 | 2013-09-19 | Yi-Sheng Lo | Bladeless fan |
| TWI548813B (en) * | 2012-03-13 | 2016-09-11 | Yi-Sheng Luo | A fanless fan with air cleaning function |
| CN102818323B (en) * | 2012-08-02 | 2015-03-11 | 青岛海信日立空调系统有限公司 | Heat pump air-conditioning system based on jet blowing |
| CN102818323A (en) * | 2012-08-02 | 2012-12-12 | 青岛海信日立空调系统有限公司 | Heat pump air-conditioning system based on jet blowing |
| CN103644150A (en) * | 2013-12-27 | 2014-03-19 | 四川迈铁龙科技有限公司 | Efficient jet flow fan |
| CN103644150B (en) * | 2013-12-27 | 2017-02-01 | 四川迈铁龙科技有限公司 | Efficient jet flow fan |
| CN105864078A (en) * | 2016-06-21 | 2016-08-17 | 陆汉明 | Novel fan |
| EP3674559A1 (en) * | 2018-12-24 | 2020-07-01 | LEONARDO S.p.A. | Jet fan and vehicle comprising such a fan |
| WO2020136474A1 (en) * | 2018-12-24 | 2020-07-02 | Leonardo S.P.A. | Jet fan and vehicle comprising such a fan |
| US20220056917A1 (en) * | 2018-12-24 | 2022-02-24 | Leonardo S.P.A. | Jet fan and vehicle comprising such a fan |
| RU2792497C2 (en) * | 2018-12-24 | 2023-03-22 | ЛЕОНАРДО С.п.А. | Jet fan and vehicle containing such fan |
| US11885353B2 (en) | 2018-12-24 | 2024-01-30 | Leonardo S.P.A. | Jet fan and vehicle comprising such a fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111123 |