CN202734057U - Air conditioner indoor unit - Google Patents
Air conditioner indoor unit Download PDFInfo
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- CN202734057U CN202734057U CN 201220268483 CN201220268483U CN202734057U CN 202734057 U CN202734057 U CN 202734057U CN 201220268483 CN201220268483 CN 201220268483 CN 201220268483 U CN201220268483 U CN 201220268483U CN 202734057 U CN202734057 U CN 202734057U
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Abstract
An air conditioner indoor unit comprises a fan and a heat exchanger, wherein the fan and the heat exchanger are arranged in a shell body, an air inlet and an air outlet are arranged on the shell body, an air flue is arranged in the shell body, the fan is arranged in the air flue, and the fan is a diagonal fan. The diagonal fan comprises a hub, blades, a motor and a drive shaft, wherein the motor drives the diagonal fan to rotate, the drive shaft is connected with the motor and the hub, diameter of an air admission side of the hub is small, and diameter of an air discharge side of the hub is big, and a plurality of blades are arranged on a windward side of the hub. A volute is arranged on an inner wall face where the hub of the diagonal fan is opposite to the blades, and is fixed on the inner wall of the shell body. A gap is arranged between the volute and the inner wall of the shell body. A thermal insulation layer or a noise insulation layer is filled in the gap. A wind wheel cover which covers the blades is arranged among top faces of the blades, and is provided with a small lower portion and a big upper portion. An inlet air guide ring is arranged on a position where the air inlet of the diagonal fan is located. The air conditioner indoor unit has the advantages of being simple and reasonable in structure, flexible in operation, and good in air supply effects.
Description
Technical field
The utility model relates to a kind of air-conditioner, particularly a kind of air conditioner room unit.
Background technology
At present, air conditioner room unit is as the treating apparatus of room air, also is as indoor decorative simultaneously, and the user is except having it requirement of performance, also to the fashion of its outward appearance is attractive in appearance various requirement arranged.
The indoor set that Chinese patent literature CN 1782515A discloses a kind of air-conditioner on June 7th, 2006, the cross section of mentioning in its background technology is rectangular floor type air-conditioner, the centrifugal fan that is arranged on the air-conditioner bottom that the air driven device adopts, be upward through heat exchanger through the air after the pressurization, then blow to the interior space by the air port.Because society is more and more higher to energy-conservation requirement, the Energy Efficiency Standard of the air-conditioner that can go on the market is improved constantly, in order to reach high energy efficiency, important means are exactly the air quantity that improves by heat exchanger, and centrifugal blower is difficult for improving air quantity, along with the raising of air quantity, the power that blower fan needs also significantly rises, so that reduce the shortcoming of air-supply efficient when increasing air quantity.Therefore; the applicant of this patent documentation has proposed following protection content; the indoor set of air-conditioner comprises the casing that the side is formed with air suction inlet, opens above; liftably be arranged on open top of casing and be formed with the diffuser of air outlet; be arranged in the casing and the aerofoil fan from air suction inlet to air outlet forced flow air, and be arranged on the air suction inlet inboard of casing and the heat exchanger that the air that aerofoil fan blows is carried out heat exchange.That is to say, four direction on floor air conditioner top is provided with air outlet, it is diffuser, blower fan adopts aerofoil fan, the flow resistance in air channel comprises air inlet in floor type air-conditioner, inlet air filter screen, heat exchanger, spiral case, air outlet and wind guide vane etc., add long air channel, behind the Bas Discharged air outlet of treated mistake, also require to send distant distance, so in order to satisfy user's comfortableness requirement, need blower fan that higher static pressure is provided, the aerofoil fan of depending merely in the scheme is difficult to reach high static pressure requirement, in addition, the air supply direction of axial flow blower is for making progress, discharge to four direction with rear reaching the top, owing to there not being minute wind speed of tangential direction, the scope of air-supply can be affected.
The utility model content
The purpose of this utility model aims to provide a kind of simple and reasonable, flexible operation, the effective air conditioner room unit of air-supply, to overcome weak point of the prior art.
A kind of air conditioner room unit by this purpose design comprises the blower fan and the heat exchanger that are arranged in the housing, is provided with air inlet and air outlet on the housing, and its architectural feature is to be provided with the air channel in the housing, and blower fan is arranged in the air channel, and blower fan is diagonal flow fan.
Described diagonal flow fan comprises wheel hub, fan blade and the motor and the driving shaft that is connected motor and wheel hub that drive the diagonal flow fan rotation, and the air approaching side diameter of wheel hub is less, and the Bas Discharged side diameter of wheel hub is larger, and a plurality of fan blades are arranged on the windward side of wheel hub.
The internal face that the wheel hub of described diagonal flow fan and fan blade are corresponding is provided with spiral case, and spiral case is fixed on the inwall of housing.
Be provided with the gap between the inwall of described spiral case and housing; Perhaps, be provided with the gap between the inwall of spiral case and housing, be filled with heat-insulation layer or the suction layer of making an uproar in the gap.
The wind wheel lid that surrounds fan blade is arranged between the described fan blade end face, and this wind wheel lid little top, bottom is large.
The air inlet place of described diagonal flow fan is provided with inlet guide solar or lunar halo.
The air outlet of described diagonal flow fan is provided with the diffusion cone coaxial with wheel hub; This diffusion cone is large for air intake side diameter, the truncated cone-shaped structure that Bas Discharged side diameter is little.
Spiral case corresponding to described diffusion cone has the structure that the air channel is enlarged.
The air outlet of described diagonal flow fan is provided with fixedly inducer, and this fixedly is provided with the fixedly wind guide vane that hinders the air rotation direction on the inducer.
The middle part of described fixedly inducer is provided be used to the fixedly inducer envelope that reduces circulation area.
The utility model can be realized the blast pressure more much bigger than axial flow blower after adopting above-mentioned technical scheme, and the air-supply component that is positioned at the tangential direction of diagonal flow fan can increase scope and the comfortableness of air-supply; By adopting diffusion cone and/or fixing inducer, further diffusion, raising air supplying distance.The utility model is compared with centrifugal blower, and then in the situation that increase air quantity, air-supply efficient does not have obvious impact.
The utlity model has simple and reasonable, flexible operation, the effective characteristics of air-supply.
Description of drawings
Fig. 1 is the perspective view of the utility model the first embodiment.
Fig. 2 is that the master of Fig. 1 looks the broken section structural representation.
Fig. 3 is the A place structure for amplifying schematic diagram among Fig. 2.
Fig. 4 is the perspective view of the diagonal flow fan among the first embodiment.
Fig. 5 is that diagonal flow fan among the first embodiment is along the air-supply schematic diagram of vane rotary tangential direction.
Fig. 6 is that diagonal flow fan among the first embodiment is along the air-supply schematic diagram of axis direction.
Fig. 7 is that the master of the utility model the second embodiment looks the broken section structural representation.
Fig. 8 is the C place structure for amplifying schematic diagram among Fig. 7.
Fig. 9 is the cross-sectional schematic of the diagonal flow fan among the second embodiment.
Figure 10 is the three-dimensional partial schematic sectional view of the diagonal flow fan among the second embodiment.
Figure 11 is the perspective view of the inlet guide solar or lunar halo among the second embodiment.
Figure 12 is that the master of Figure 11 looks the sectional structure schematic diagram.
Figure 13 is the broken section structural representation of the diagonal flow fan among the utility model the 3rd embodiment.
Figure 14 is that the master of the 3rd embodiment looks the broken section structural representation.
Figure 15 is the E place structure for amplifying schematic diagram among Figure 14.
Figure 16 is the structural representation of the utility model the 4th embodiment.
Figure 17 is the broken section structural representation of the diagonal flow fan among the 4th embodiment.
Figure 18 is the schematic perspective view of the fixedly inducer among the 4th embodiment.
Figure 19 is that D-D among Figure 16 is to analysing and observe enlarged diagram.
Figure 20 is the structural representation of the 4th embodiment.
Figure 21 is the installation diagram of the diagonal flow fan associated component among the utility model the 5th embodiment.
Figure 22 is the blast expanded view of the diagonal flow fan associated component among the 5th embodiment.
Among the figure: 1 is indoor apparatus of air conditioner, and 2 is housing, and 3 is air outlet, and 4 is diagonal flow fan, 5 is spiral case, and 6 is electric machine support, and 7 is the gap, and 8 are the wind wheel lid, 9 is the direction of wind, and 10 is the axis, and 11 are the diffusion cone, and 12 is inlet guide solar or lunar halo, 13 are fixing inducer, and 14 is fixing wind guide vane, and 15 is the air inlet of diagonal flow fan, and 16 is the air outlet of diagonal flow fan, 17 is the spiral case connecting portion, and 18 is that fixedly inducer seals, and 41 is fan blade, and 42 is the oblique flow wind wheel, 43 is motor, and 44 is motor shaft, and 45 is wheel hub.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
The first embodiment
Referring to Fig. 1-Fig. 6, this air conditioner room unit comprises the blower fan and the heat exchanger (not shown) that are arranged in the housing 2, be provided with air inlet (not shown) and air outlet 3 on the housing 2, be provided with the air channel in the housing 2, blower fan is arranged in the air channel, and blower fan is diagonal flow fan 4.
In the present embodiment, in housing 2, be provided with the air channel of 3 circulations of air that are communicated with from the air inlet to the air outlet, in the air channel, be provided with diagonal flow fan 4.This diagonal flow fan 4 is called again flow-mixing blower fan, the air supply direction of diagonal flow fan 4 comprise along motor shaft to component, with along the component of the tangential direction of vane rotary direction.The air output of diagonal flow fan 4 is less than axial flow blower, and greater than centrifugal blower.The air-supply static pressure of diagonal flow fan 4 is greater than axial flow blower, and less than centrifugal blower.Diagonal flow fan 4 characteristics own have just determined, contrast existing employing axial flow blower type of drive, and higher air-supply static pressure is arranged, and farther air supplying distance.
In conjunction with Fig. 5 and Fig. 6, can find out that diagonal flow fan 4 comprises oblique flow wind wheel 42, motor 43 and motor shaft 44, drive the motor 43 that oblique flow wind wheel 42 rotates and is connected the motor shaft 44 of motor 43 and oblique flow wind wheel 42, motor 43 driving oblique flow wind wheels 42 10 are that the center of circle rotates take the axis.Wherein, oblique flow wind wheel 42 comprises that air approaching side diameter is less, the wheel hub 45 that Bas Discharged side diameter is larger, a plurality of fan blades 41 that arrange in the windward side of this wheel hub 45.When motor 43 drove 42 rotation of oblique flow wind wheel, fan blade 41 promoted air along upwards and along the tangential direction that fan blade rotates air being released.In the present embodiment, air conditioner room unit 1 is the type of the top four sides air-out of console mode, adopt diagonal flow fan 4, can improve the air-supply static pressure on the one hand, overcome the flow resistance in the air channel, certainly also comprise the flow resistance that air inlet, inlet air filter screen, heat exchanger, spiral case, air outlet and wind guide vane etc. are located, add long air channel, can also send distant distance; On the other hand, as shown in Figure 5, from the air-out in air port and non-perpendicular to air outlet, but along the direction that oblique flow wind wheel 42 rotates, the component of tangential direction is arranged, can further improve like this effect of four sides air-out, can there be the air-supply dead angle, improves the air-supply comfortableness.
The second embodiment
Referring to Fig. 7-Figure 12, the difference of the present embodiment and the first embodiment is, be provided with spiral case 5 on the internal face of the housing 2 of air conditioner room unit, as shown in Figure 7 and Figure 8, the internal face of the wheel hub 45 of diagonal flow fan 4 and fan blade 41 correspondences is provided with spiral case 5, and spiral case 5 is fixed on the internal face of housing 2 by spiral case connecting portion 17.Spiral case 5 itself has certain intensity, and the machining accuracy of the inner surface of spiral case 5 and surface flatness are higher, is beneficial to and the fan blade 41 that rotates cooperates, and can be beneficial to air and pass through, and reduces the resistance of air.
Amplify and to see by the part of Fig. 8, between spiral case 5 and housing 2 internal faces gapped 7, air stream after the cooling of process heat exchanger or the heating is when spiral case 5, outside heat transfer can be reduced in gap 7, particularly when cooling condition, reduce the condensation on housing 2 surfaces, reduce simultaneously the noise of motor and air-flow and outwards propagate.In order further to reduce the propagation of heat transfer and noise, the gap 7 between spiral case 5 and housing 2 internal faces can be adopted insulation or be inhaled the layer of making an uproar and fill.
In conjunction with Fig. 9 and Figure 10, oblique flow fan blade 41 outsides also have the wind wheel lid 8 that links together with each fan blade, and the wind wheel lid 8 that surrounds fan blade is namely arranged between the end face of each fan blade 41.This wind wheel lid 8 can be strengthened the structural strength of each fan blade 41 on the one hand, can make on the other hand the air-flow that enters diagonal flow fan air inlet 15 that the effect of conflux is arranged, and wind wheel covers the less diameter entrance in 8 bottoms increases the speed of intake air.In addition, the respective outer side edges that the structure that the little top, bottom of wind wheel lid 8 is large and the little top, bottom of wheel hub 45 are large has formed the air channel that fan blade 41 promotes the air rotating boosting.Diagonal flow fan air inlet 15 is the air approaching side of wheel hub 45 namely.
In conjunction with Fig. 9 and Figure 11, air inlet 15 places of diagonal flow fan are provided with inlet guide solar or lunar halo 12, and the air-flow of process inlet guide solar or lunar halo 12 water conservancy diversion enters by the air channel between wind wheel lid 8 and the wheel hub 45 again.Inlet guide solar or lunar halo 12 diminishes the area in air channel, improves the wind speed of import department, and the internal diameter with wind wheel lid 8 cooperates simultaneously, reduces the different eddy current that form of the negative pressure that produces owing to diagonal flow fan 4, noise reduction.
All the other are not stated part and see the first embodiment, repeat no more.
The 3rd embodiment
Referring to Figure 13-Figure 15, the difference of the present embodiment and the first embodiment is, be provided with the diffusion cone 11 coaxial with wheel hub 45 at the air outlet 16 of diagonal flow fan 4, be that the larger diameter side of wheel hub 45 is provided with the diffusion cone 11 coaxial with wheel hub 45, diffusion cone 11 is that air intake side diameter is large, the truncated cone-shaped structure that Bas Discharged side diameter is little.Diffusion cone 11 is fixed on the electric machine support 6, forms the air channel between the inner surface (also can be the inner surface of spiral case 5) of the outer surface of diffusion cone 11 and the housing 2 of indoor set, and this air channel is that a bottom area is little, the cirque structure that the top area is large.Diffusion is effectively carried out to air in the large air channel that becomes gradually that forms like this, reduces air wind speed and flow losses, improves static pressure and the air supplying distance of air.
Further, in the present embodiment as shown in figure 15, tilt to indoor unit casing 2 at the inner surface of spiral case 5, thereby the air channel at this place is further increased, the spiral case 5 of namely boring 11 correspondences at diffusion has the structure that the air channel is enlarged.Can further carry out diffusion to air.
All the other are not stated part and see the first embodiment, repeat no more.
The 4th embodiment
Referring to Figure 16-Figure 19, the difference of the present embodiment and each embodiment of front is, the air outlet of indoor unit of floor type air conditioner is positioned at the top front face of housing 2, the medium static pressure that diagonal flow fan 4 produces and all be conducive to positive remote air-supply than the advantage of Wind Volume, but the component of the wind speed direction of rotation in the air channel then is unfavorable for positive air-supply.As shown in figure 18, be provided with in the present embodiment fixedly inducer 13, fixedly inducer 13 is fixedly connected on the internal face of air-conditioner housing 2, air direction of rotation in the air channel in the present embodiment is for turning clockwise, and the incline direction of the fixedly wind guide vane 14 that fixedly arranges on the inducer 13 stops the air of clockwise wind direction, also namely be provided with fixedly inducer 13 at the downwind side of diagonal flow fan 4, fixedly be provided with the fixedly wind guide vane 14 that hinders the air rotation direction on the inducer 13, be provided with fixedly inducer envelope 18 at fixing inducer 13 middle parts, can reduce the area by air, make all air all carry out the choked flow supercharging by fixing wind guide vane 14.Reduce on the one hand the rotary speed of air, can carry out diffusion to air on the other hand, improve the static pressure of air-supply.
In conjunction with Figure 16 and Figure 19, Figure 19 be indoor set D-D to cutaway view Amplified image, the shell that can find out indoor set is to have straightway L jointly to consist of with the arc S that is connected this straightway L, also be that the diagonal flow fan that the utility model discloses is the indoor apparatus of air conditioner that can be used for non-circular other shapes, and as can see from Figure 19, the air channel of diagonal flow fan utilizes the space of indoor set enclosure fully, in the present embodiment, the area that area in the spiral case accounts for the indoor set shell surpasses 89%, in other words, indoor set for same sectional area, adopt diagonal flow fan can effectively utilize the space of indoor set enclosure, and then reduce air supply velocity, reduce the Air Flow noise.
Fixedly inducer 13 is positioned on the position of downwind side of diagonal flow fan, sees Figure 17, thereby realizes hindering tangential rotational component, has increased the effect of diffusion.
All the other are not stated part and see the first embodiment, repeat no more.
The 5th embodiment
Referring to Figure 20-Figure 22, the air outlet 3 of the indoor unit of floor type air conditioner in the present embodiment is positioned at the top front face of housing, the shell of indoor set be cylindrical and bottom by top from cylindrical excessively to quadrangle, be the installation diagram of diagonal flow fan associated component such as Figure 21, be the blast expanded view of diagonal flow fan associated component such as Figure 22, can find out in conjunction with two figure, the present embodiment has increased again fixedly inducer 13 on the basis of the 3rd embodiment, and the top of diffusion cone 11 is in fixedly in the inducer 13, be combined with the fixing inner circle of inducer 13 in the periphery of diffusion cone 11, airtight from fixing inducer 13 centers to the fixing position of inducer envelope, like this so that the air channel area reducing, improved local wind speed, and effectively utilized the space, and all air all need to pass through from the fixedly wind guide vane 14 that oppositely arranges with direction of rotation of fixing inducer 13, can subdue significantly the wind speed of direction of rotation on the one hand, further diffusion improves air supplying distance thereby improve the air-supply static pressure on the other hand.Namely at the downwind side of diagonal flow fan air outlet 16, be provided with and the coaxial diffusion cone 11 of wheel hub 45 and fixing inducer 13, this diffusion cone 11 is that air intake side diameter is large, the truncated cone-shaped structure that Bas Discharged side diameter is little.Fixedly be provided with the fixedly wind guide vane 14 that hinders the air rotation direction on the inducer 13.Such combination can farthest adapt to the demand of cabinet-type air conditioner Wind Volume, remote air-supply, the form of particularly blowing for existing housing front upper, can bore 11 by diffusion once increases, by fixing wind guide vane 14 secondary boosters, in the situation that the power of motor increase is little, reach the requirement of the remote air-supply of Wind Volume.
All the other are not stated part and see the first embodiment, repeat no more.
Claims (10)
1. air conditioner room unit, comprise the blower fan and the heat exchanger that are arranged in the housing (2), be provided with air inlet and air outlet (3) on the housing (2), it is characterized in that being provided with the air channel in the housing (2), blower fan is arranged in the air channel, and blower fan is diagonal flow fan (4).
2. air conditioner room unit according to claim 1, it is characterized in that described diagonal flow fan (4) comprises wheel hub (45), fan blade (41) and drives diagonal flow fan (4) motor (43) that rotates and the driving shaft that is connected motor (43) and wheel hub (45), the air approaching side diameter of wheel hub (45) is less, the Bas Discharged side diameter of wheel hub (45) is larger, and a plurality of fan blades (41) are arranged on the windward side of wheel hub (45).
3. air conditioner room unit according to claim 2, the wheel hub (45) and internal face corresponding to fan blade (41) that it is characterized in that described diagonal flow fan (4) are provided with spiral case (5), and spiral case (5) is fixed on the inwall of housing (2).
4. air conditioner room unit according to claim 3 is characterized in that being provided with gap (7) between the inwall of described spiral case (5) and housing (2); Perhaps, be provided with gap (7) between the inwall of described spiral case (5) and housing (2), gap (7) are filled with heat-insulation layer or the suction layer of making an uproar.
5. air conditioner room unit according to claim 2 is characterized in that having between described fan blade (41) end face wind wheel of encirclement fan blade (41) to cover (8), and this wind wheel lid little top, (8) bottom is large.
6. air conditioner room unit according to claim 4 is characterized in that the air inlet (15) of described diagonal flow fan (4) locates to be provided with inlet guide solar or lunar halo (12).
7. air conditioner room unit according to claim 6 is characterized in that the air outlet (16) of described diagonal flow fan (4) is provided with the diffusion cone (11) coaxial with wheel hub (45); This diffusion cone (11) is that air intake side diameter is large, the truncated cone-shaped structure that Bas Discharged side diameter is little.
8. air conditioner room unit according to claim 7 is characterized in that spiral case (5) corresponding to described diffusion cone (11) has the structure that the air channel is enlarged.
9. according to claim 2 to 8 arbitrary described air conditioner room units, the air outlet (16) that it is characterized in that described diagonal flow fan (4) is provided with fixedly inducer (13), and this fixedly is provided with the fixedly wind guide vane (14) that hinders the air rotation direction on the inducer (13).
10. air conditioner room unit according to claim 9 is characterized in that the middle part of described fixedly inducer (13) is provided be used to the fixedly inducer envelope (18) that reduces circulation area.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268483 CN202734057U (en) | 2012-06-07 | 2012-06-07 | Air conditioner indoor unit |
| KR1020177002453A KR101783177B1 (en) | 2012-06-07 | 2012-11-28 | Oblique flow fan, oblique flow blower and console type air conditioner having same |
| PCT/CN2012/085406 WO2013181904A1 (en) | 2012-06-07 | 2012-11-28 | Oblique flow fan, oblique flow blower and air conditioning indoor unit having same |
| KR20157000183A KR20150030697A (en) | 2012-06-07 | 2012-11-28 | Oblique flow fan, oblique flow blower and air conditioning indoor unit having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268483 CN202734057U (en) | 2012-06-07 | 2012-06-07 | Air conditioner indoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202734057U true CN202734057U (en) | 2013-02-13 |
Family
ID=47659752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220268483 Expired - Lifetime CN202734057U (en) | 2012-06-07 | 2012-06-07 | Air conditioner indoor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202734057U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964340A (en) * | 2015-05-26 | 2015-10-07 | 广东美的制冷设备有限公司 | Air conditioner |
| WO2016061747A1 (en) * | 2014-10-22 | 2016-04-28 | 广东泛仕达机电有限公司 | Diagonal flow fan |
| CN105736474A (en) * | 2016-03-31 | 2016-07-06 | 广东美的制冷设备有限公司 | Static blade of axial flow cabinet machine, guide component and axial flow cabinet machine |
| CN108167228A (en) * | 2018-03-09 | 2018-06-15 | 郏松筠 | A kind of wind turbine of Wind Volume low-power consumption |
| WO2021197080A1 (en) * | 2020-04-03 | 2021-10-07 | 杰马科技（中山）有限公司 | Bladeless cooling fan |
-
2012
- 2012-06-07 CN CN 201220268483 patent/CN202734057U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016061747A1 (en) * | 2014-10-22 | 2016-04-28 | 广东泛仕达机电有限公司 | Diagonal flow fan |
| CN104964340A (en) * | 2015-05-26 | 2015-10-07 | 广东美的制冷设备有限公司 | Air conditioner |
| CN105736474A (en) * | 2016-03-31 | 2016-07-06 | 广东美的制冷设备有限公司 | Static blade of axial flow cabinet machine, guide component and axial flow cabinet machine |
| CN105736474B (en) * | 2016-03-31 | 2019-08-16 | 广东美的制冷设备有限公司 | Stator blade, guiding subassembly and the axis stream cabinet-type air conditioner of axis stream cabinet-type air conditioner |
| CN108167228A (en) * | 2018-03-09 | 2018-06-15 | 郏松筠 | A kind of wind turbine of Wind Volume low-power consumption |
| WO2021197080A1 (en) * | 2020-04-03 | 2021-10-07 | 杰马科技（中山）有限公司 | Bladeless cooling fan |
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Granted publication date: 20130213 |
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