CN208918904U - A kind of axial-flow leaf component and air-conditioning - Google Patents
A kind of axial-flow leaf component and air-conditioning Download PDFInfo
- Publication number
- CN208918904U CN208918904U CN201821474795.XU CN201821474795U CN208918904U CN 208918904 U CN208918904 U CN 208918904U CN 201821474795 U CN201821474795 U CN 201821474795U CN 208918904 U CN208918904 U CN 208918904U
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- China
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- level
- axial
- flow leaf
- radome fairing
- fan blade
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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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
-
- 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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
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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 utility model provides a kind of axial-flow leaf component and air-conditioning, is related to field of air conditioning；The axial-flow leaf component includes: axial-flow leaf, and the axial-flow leaf includes the level-one fan blade and second level fan blade being fixedly secured to one another；Radome fairing, the radome fairing include the level-one radome fairing being fixedly connected with air-conditioning fuselage, second level radome fairing；Power device is suitable for driving the axial-flow leaf rotation；The level-one fan blade, the level-one radome fairing, the second level fan blade, the second level radome fairing are set in sequence along same axis；The blade rotation direction of the axial-flow leaf and the blade of the radome fairing are oppositely oriented.The air-conditioning includes above-mentioned axial-flow leaf component.Axial-flow leaf component described in the utility model includes two-stage axial-flow leaf and two-stage radome fairing, and air by accelerating twice, and after rectifying twice, wind speed is increased dramatically, and outlet air, closer to natural wind, user experience is good.
Description
Technical field
The utility model relates to air-conditioning technical field, in particular to a kind of axial-flow leaf component and air-conditioning.
Background technique
Air-conditioning fuselage is compact, and air duct fan blade is also all smaller, therefore air-conditioning mostly uses cross flow blower, axial fan at present
And centrifugal fan；Cross flow blower generally uses single tubular fan blade, but deficiency in draught, blows to be unidirectionally vortexed shape, to people
Body impact is big, and it is poor to experience；Centrifugal fan generally uses single centrifugation blade, but its noise is big, air outlet angle is limited, and outlet air side
To top air-out mode is limited to, preceding outlet air cannot achieve；Axial fan generally uses single axial stream fan blade, and noise is relatively small,
But air quantity is small, and refrigerating capacity is low.
Utility model content
In view of this, the utility model is directed to a kind of axial-flow leaf component and air-conditioning, to solve existing air conditioning exhausting
Air quantity is small, and outlet air is unnatural, the technical problem of user experience difference.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of axial-flow leaf component, the axial-flow leaf component include:
Axial-flow leaf, the axial-flow leaf include the level-one fan blade and second level fan blade being fixedly secured to one another；
Radome fairing, the radome fairing include the level-one radome fairing being fixedly connected with air-conditioning fuselage, second level radome fairing；
Power device is suitable for driving the axial-flow leaf rotation；
The level-one fan blade, the level-one radome fairing, the second level fan blade, the second level radome fairing along same axis sequentially
Setting；
The blade rotation direction of the axial-flow leaf and the blade of the radome fairing are oppositely oriented.
Further, the level-one radome fairing includes: the first outer ring, the first inner ring, first outer ring and described first
At least one first blade is provided between inner ring, first outer ring forms a necking end and a flared end.
Further, the level-one fan blade includes: the second outer ring, the second inner ring, second outer ring and the second inner ring it
Between be provided at least one second blade；
Rotation section, the rotation section and the first inner ring clearance fit and relative rotation；
First fixed part, is set to the inner ring surface of second inner ring, and is provided with an at least through-hole in the axial direction.
Further, the second level fan blade includes:
Third outer ring, third inner ring are provided at least one third leaf between the third outer ring and the third inner ring
Piece；
Second fixed part, suitable for being fixedly connected with first fixed part；
Centre bore is set to the second level blade shaft line direction, suitable for being fixedly connected with the output shaft of the power device.
Further, the second level radome fairing includes:
4th outer ring, the 4th inner ring are provided at least one quaterfoil between the 4th outer ring and the 4th inner ring；
Third fixed part, at least part of closing the 4th inner ring, suitable for being supported fixation to the power device.
Further, the outer surface of the power device is provided with the 4th fixed part, is provided on the 4th fixed part
One or more the second through-holes with blind hole cooperation.
Further, the adjacent blades spacing of the level-one fan blade is greater than the adjacent blades spacing of the second level fan blade.
Further, the fixed bit of second fixed part and first fixed part is setting in first inner ring
In ring.
Further, the adjacent blades spacing of the level-one radome fairing is greater than between the adjacent blades of the second level radome fairing
Away from.
Compared with the existing technology, axial-flow leaf component described in the utility model has the advantage that
(1) axial-flow leaf component described in the utility model includes two-stage axial-flow leaf and two-stage radome fairing, and air passes through
Accelerate twice, wind speed is increased dramatically, and in the case where same power device driving, air quantity increases；And in same wind
In the case where amount, the power device can be controlled in low-speed running, saves electricity consumption, reduces loss.In addition, wind is rectified by two-stage
The effect for covering rectification, air-flow is broken up, so that outlet air, closer to natural wind, user experience is good.
(2) axial-flow leaf modular construction described in the utility model is compact, and Wind Volume can be obtained in the case where small size
The another object of the utility model is to propose that a kind of air-conditioning, the air-conditioning include above-mentioned axial-flow leaf component.
Possessed advantage is identical compared with the existing technology with above-mentioned axial-flow leaf component for the air-conditioning, no longer superfluous herein
It states.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is the side view of axial-flow leaf component described in the utility model embodiment；
Fig. 2 is that axial-flow leaf component described in the utility model embodiment operates schematic diagram；
Fig. 3 is the structure chart of level-one radome fairing described in the utility model embodiment；
Fig. 4 is the structure chart of level-one fan blade described in the utility model embodiment；
Fig. 5 is schematic diagram of the second level fan blade in conjunction with power device described in the utility model embodiment；
Fig. 6 is the structure chart of second level radome fairing described in the utility model embodiment.
Description of symbols:
1- level-one radome fairing, 2- level-one fan blade, 3- second level fan blade, 4- second level radome fairing, 5- power device, outside 11- first
Circle, the first inner ring of 12-, the first blade of 13-, the second outer ring 21-, the second inner ring of 22-, the second blade of 23-, the rotation section 24-, 25-
First fixed part, 26- through-hole, 31- third outer ring, 32- third inner ring, 33- third blade, the second fixed part of 34-, 41- the 4th
Outer ring, the 4th inner ring of 42-, 43- quaterfoil, 44- third fixed part, 45- protective layer, the 4th fixed part of 51-, 52- second are logical
Hole.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment one
Referring to figs. 1 and 2, Fig. 1 is the side view of the utility model axial-flow leaf component, and Fig. 2 is the utility model
Axial-flow leaf component operates schematic diagram.The utility model discloses a kind of axial-flow leaf components, which is characterized in that the axis stream wind
Leaf component includes: axial-flow leaf, and the axial-flow leaf includes the level-one fan blade 2 and second level fan blade 3 being fixedly secured to one another；Rectification
Cover, the radome fairing includes the level-one radome fairing 1 being fixedly connected with air-conditioning fuselage, second level radome fairing 4；Power device 5 is suitable for driving
Move the axial-flow leaf rotation；The level-one fan blade 2, the level-one radome fairing 1, the second level fan blade 3, the second level radome fairing
4 are set in sequence along same axis；The blade rotation direction of the axial-flow leaf and the blade of the radome fairing are oppositely oriented.
Wherein, the level-one fan blade 2 is identical as the blade rotation direction of the second level fan blade 3, the level-one radome fairing 1 and second level
The blade rotation direction of radome fairing 4 is identical, and the blade rotation direction of the axial-flow leaf and the blade of the radome fairing are oppositely oriented.
When the power device 5 starts, air first passes through the level-one fan blade 2, is once accelerated, and is formed along described one
The wind that grade fan blade 2 axially flows；It subsequently enters the level-one radome fairing 1 and carries out first time rectification, due to the level-one radome fairing 1
Blade and the blade of the level-one fan blade 2 it is oppositely oriented, wind direction is disturbed；Air after rectifying for the first time is via described two
Grade fan blade 3, carries out secondary acceleration, forms the wind flowed along the 3 axis stream of second level fan blade, and wind speed is substantially improved；Last air warp
The second level radome fairing 4 rectifies, diverging blowout.
Wherein, by accelerating twice, wind speed is increased dramatically air, the case where the same power device 5 drives
Under, air quantity increases；And in the case where same air quantity, the power device 5 can be controlled in low-speed running, saves electricity consumption, reduces
Loss.In addition, wind passes through the effect of two-stage radome fairing rectification, air-flow is broken up, so that outlet air is closer to natural wind, user experience
It is good.
Preferably, the power device 5 can be motor.
The utility model is compact-sized, and a large amount of wind are obtained in the case where small size, realizes outlet air before air-conditioning, product body
The advantage tested.
Embodiment two
In conjunction with shown in Fig. 1, Fig. 2 and Fig. 3, Fig. 3 is the structure chart of the utility model level-one radome fairing.Axis as described above
Fan blade component is flowed, the present embodiment is different from place and is that the level-one radome fairing 1 includes: the first outer ring 11, the first inner ring
12, at least one first blade 13, first outer ring shape are provided between first outer ring 11 and first inner ring 12
11 at a necking end and a flared end.
After the power device 5 starts, after air accelerates via the level-one fan blade 2, the level-one rectification is passed sequentially through
The flared end of cover 1 and the necking end, the level-one radome fairing 1 carry out first time rectification to air, the air after rectification
It again speeds up via the second level fan blade 3, is most rectified afterwards through the second level radome fairing 4 again, diverging blowout.
The design of the flared end and the necking end, to be promoted air-flow forward end using fluid force.
Preferably, first blade 13 is multiple.
Embodiment three
In conjunction with shown in Fig. 1, Fig. 2 and Fig. 4, Fig. 4 is the structure chart of the utility model level-one fan blade.Axis stream as described above
Fan blade component, the present embodiment are different from place and are that the level-one fan blade 2 includes: the second outer ring 21, the second inner ring 22, institute
It states and is provided at least one second blade 23 between the second outer ring 21 and the second inner ring 22；Rotation section 24 is provided projectingly on described
Second inner ring, 22 end face, the rotation section 24 and 22 clearance fit of the first inner ring and relative rotation；First fixed part 25, if
It is placed in the inner ring surface of second inner ring 21, and is provided with an at least through-hole 26 in the axial direction.
When the axial-flow leaf component is installed, first rotation section 24 may pass through first inner ring 12, with described two
Grade fan blade 3 is fixedly connected.
When the level-one fan blade 2 rotates, surrounding air passes through because the generation of negative pressure is inhaled into the axial-flow leaf component
It crosses the level-one fan blade 2 to accelerate, forms the wind axially flowed along the level-one fan blade 2.
Preferably, second blade 23 is multiple.
Preferably, the through-hole 26 is multiple.
Example IV
In conjunction with shown in Fig. 1, Fig. 2 and Fig. 5, schematic diagram of the utility model second level fan blade in conjunction with power device when Fig. 5.Such as
Above-mentioned axial-flow leaf component, the present embodiment are different from place and are that the second level fan blade 3 includes: third outer ring 31, third
Inner ring 32 is provided at least one third blade 33 between the third outer ring 31 and the third inner ring 32；Second fixed part
34, suitable for being fixedly connected with first fixed part 25；Centre bore is set to 3 axial location of second level fan blade, is suitable for and institute
The output shaft for stating power device 5 is fixedly connected.
When the axial-flow leaf component is installed, the rotation section 24 passes through first inner ring 12, first fixed part
25 are fixedly connected with second fixed part 34 by the through-hole 26, second fixed part 34 and first fixed part 25
Fixed bit setting in the inner ring of first inner ring 12.The output shaft and the centre bore of the power device 5 are fixed to be connected
It connects, the power device starting, the output shaft drives the second level fan blade 3 to rotate, and the second level fan blade 3 drives the level-one
Fan blade 2 rotates.
Air successively through flowing the level-one fan blade 2, is once accelerated；The level-one radome fairing 1, is once rectified；
The second level fan blade 3, carries out secondary acceleration；The second level radome fairing 4, carries out secondary rectification.The level-one fan blade 2 and described two
The cooperation of grade fan blade 3 carries out two-stage acceleration to air, and wind speed is increased dramatically, in the feelings that the same power device 5 drives
Under condition, air quantity increases.
Preferably, the third blade 33 is multiple.
Embodiment five
In conjunction with shown in Fig. 1, Fig. 2 and Fig. 6, Fig. 6 is the structure chart of the present embodiment second level radome fairing.Such as above-mentioned axial-flow leaf
Component, the present embodiment are different from place and are, the second level radome fairing 4 includes: the 4th outer ring 41, the 4th inner ring 42, described
At least one quaterfoil 43 is provided between 4th outer ring 41 and the 4th inner ring 42；Third fixed part 44, at least part of envelope
The 4th inner ring 42 is closed, suitable for being supported fixation to the power device 5；Wherein, the third fixed part 44 is towards institute
The one side for stating second level fan blade 3 is equipped with blind hole, and the blind hole is one or more.
When the axial-flow leaf component is installed, the power device 5 passes through the third fixed part 44, solid with the third
The blind hole determined in portion 44 is fixedly connected, and the second level radome fairing 4 carries out secondary rectification to via the air of two grade blade 3,
Air-flow is broken up into blowout, so that outlet air, closer to natural wind, user experience is good.
Preferably, the quaterfoil 43 is multiple.
Embodiment six
In conjunction with shown in Fig. 1 and Fig. 6, such as above-mentioned axial-flow leaf component, the present embodiment is different from place and is, and described the
Four outer rings 42 axially extend to form protective layer 45, and when the axial-flow leaf component is installed, the second level fan blade 3 is installed on described
In protective layer 45, when the axial-flow leaf component operates, the second level fan blade 3 is directly entered institute after carrying out secondary acceleration to air-flow
It states in second level radome fairing 4, the protective layer 45 effectively prevents from altering outside air-flow, while making the structure of the axial-flow leaf component
It is more compact, air quantity big as far as possible can be obtained in the case where small size.
Embodiment seven
Referring to figure 1 and figure 5, such as above-mentioned axial-flow leaf component, the present embodiment is different from place and is, described dynamic
The outer surface of power device 5 is provided with the 4th fixed part 51, and the with blind hole cooperation is provided on the 4th fixed part 51
Two through-holes 52, second through-hole are one or more.
When the axial-flow leaf component is installed, the power device 5 passes through the inner ring of the third fixed part 44, passes through institute
The second through-hole 52 is stated to be fixedly connected with the cooperation of the blind hole.The power device 5 drives the second level fan blade 3 to rotate, described
Second level fan blade 3 drives the level-one fan blade 2 to rotate, and by accelerating twice, wind speed is increased dramatically air.Preferably, described
Second through-hole 52 is screw hole, and the blind hole is equipped with disposed thread, and second through-hole is connected by screw to the blind hole.
Preferably, second through-hole 52 is connect with the blind hole by pin.
Preferably, the power device 5 is motor, accelerated by the second level that two-stage fan blade can be realized in single motor.
Preferably, wind speed is increased dramatically in air by accelerating twice, the feelings that the same power device 5 drives
Under condition, air quantity increases；And in the case where same air quantity, the power device 5 can be controlled in low-speed running, saves electricity consumption, drop
Low-loss reduces noise.
Embodiment eight
In conjunction with shown in Fig. 4 and Fig. 6, such as above-mentioned axial-flow leaf component, the present embodiment is different from place and is, and described one
The adjacent blades spacing of grade fan blade 2 is greater than the adjacent blades spacing of the second level fan blade 3.
The adjacent blades spacing of second blade 23 be greater than the third blade 33 adjacent blades spacing, described second
The big spaced blades of blade 23 can produce the air quantity of high flow, and the adjacent blades spacing of the third blade 33 is smaller,
The number of blade is more, can be the more uniform of airflow stirring, and noise is smaller.
Embodiment nine
In conjunction with shown in Fig. 1 and Fig. 6, such as above-mentioned axial-flow leaf component, the present embodiment is different from place and is, and described one
The adjacent blades spacing of grade radome fairing 1 is greater than the adjacent blades spacing of the second level radome fairing 6.
The adjacent blades spacing of the quaterfoil 43 is less than the adjacent blades spacing of first blade 13, i.e., and described the
The number of blade of quaterfoil 43 is more than the number of blade of first blade 12, and the effect of the more number of blade, air-supply is better, can be
Wind cuts to obtain more fritter, keeps outlet air softer, user experience is more preferable.
Embodiment ten
The utility model discloses a kind of air-conditioning, the air-conditioning includes above-mentioned axial-flow leaf component.
The air-conditioning utilizes above-mentioned axial-flow leaf component, realizes and wind speed and blowing range is substantially improved, outlet air is closer
Natural wind, the good effect of user experience.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of axial-flow leaf component, which is characterized in that the axial-flow leaf component includes:
Axial-flow leaf, the axial-flow leaf include the level-one fan blade (2) and second level fan blade (3) being fixedly secured to one another；
Radome fairing, the radome fairing include the level-one radome fairing (1) being fixedly connected with air-conditioning fuselage, second level radome fairing (4)；
Power device (5) is suitable for driving the axial-flow leaf rotation；
The level-one fan blade (2), the level-one radome fairing (1), the second level fan blade (3), the second level radome fairing (4) are along same
Axis is set in sequence；
The blade rotation direction of the axial-flow leaf and the blade of the radome fairing are oppositely oriented.
2. axial-flow leaf component according to claim 1, which is characterized in that the level-one radome fairing (1) includes: outside first
Enclose (11), the first inner ring (12), be provided between first outer ring (11) and first inner ring (12) at least one first
Blade (13), first outer ring (11) form a necking end and a flared end.
3. axial-flow leaf component according to claim 2, which is characterized in that the level-one fan blade (2) includes: the second outer ring
(21), the second inner ring (22) are provided at least one second blade between second outer ring (21) and the second inner ring (22)
(23)；
Rotation section (24), the rotation section (24) and the first inner ring (12) clearance fit and relative rotation；
First fixed part (25), is set to the inner ring surface of second inner ring (22), and it is logical to be provided at least one in the axial direction
Hole (26).
4. axial-flow leaf component according to claim 3, which is characterized in that the second level fan blade (3) includes:
Third outer ring (31), third inner ring (32), be provided between the third outer ring (31) and the third inner ring (32) to
A few third blade (33)；
Second fixed part (34) is suitable for being fixedly connected with first fixed part (25)；
Centre bore is set to second level fan blade (3) axial location, is suitable for and the fixed company of the output shaft of the power device (5)
It connects.
5. axial-flow leaf component according to claim 1, which is characterized in that the second level radome fairing (4) includes:
4th outer ring (41), the 4th inner ring (42) are provided at least one between the 4th outer ring (41) and the 4th inner ring (42)
A quaterfoil (43)；
Third fixed part (44), at least part of closing the 4th inner ring (42), is suitable for propping up the power device (5)
Support is fixed.
6. axial-flow leaf component according to claim 5, which is characterized in that the outer surface of the power device (5) is arranged
There is the 4th fixed part (51), the second through-hole (52) with blind hole cooperation is provided on the 4th fixed part (51).
7. axial-flow leaf component according to claim 3, which is characterized in that between the adjacent blades of the level-one fan blade (2)
Away from the adjacent blades spacing for being greater than the second level fan blade (3).
8. axial-flow leaf component according to claim 4, which is characterized in that second fixed part (34) and described first
The fixed bit of fixed part (25) is setting in the inner ring of first inner ring (12).
9. axial-flow leaf component according to claim 5, which is characterized in that the adjacent blades of the level-one radome fairing (1)
Spacing is greater than the adjacent blades spacing of the second level radome fairing (4).
10. a kind of air-conditioning, which is characterized in that the air-conditioning includes the axial-flow leaf group of any claim in claim 1-9
Part.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821474795.XU CN208918904U (en) | 2018-09-10 | 2018-09-10 | A kind of axial-flow leaf component and air-conditioning |
| PCT/CN2019/093825 WO2020052320A1 (en) | 2018-09-10 | 2019-06-28 | Axial-flow fan assembly and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821474795.XU CN208918904U (en) | 2018-09-10 | 2018-09-10 | A kind of axial-flow leaf component and air-conditioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208918904U true CN208918904U (en) | 2019-05-31 |
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ID=66703585
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821474795.XU Active CN208918904U (en) | 2018-09-10 | 2018-09-10 | A kind of axial-flow leaf component and air-conditioning |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN208918904U (en) |
| WO (1) | WO2020052320A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020052320A1 (en) * | 2018-09-10 | 2020-03-19 | 宁波奥克斯电气股份有限公司 | Axial-flow fan assembly and air conditioner |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB676371A (en) * | 1948-07-13 | 1952-07-23 | Macard Screws Ltd | Improvements in multi-stage cased screw-propeller fans, compressors, pumps and the like |
| TW200905083A (en) * | 2007-07-31 | 2009-02-01 | Delta Electronics Inc | Serial fan and frame structure thereof |
| JP2012026291A (en) * | 2010-07-20 | 2012-02-09 | Hitachi Ltd | Axial fan |
| CN103835971A (en) * | 2014-03-17 | 2014-06-04 | 胡小全 | Novel counter-rotating fan |
| CN204900286U (en) * | 2015-07-24 | 2015-12-23 | 广东美的制冷设备有限公司 | Axial fan and air conditioner who has it |
| CN205779782U (en) * | 2016-05-25 | 2016-12-07 | 佛冈明阳机械有限公司 | A kind of double fan blade axial flow fan device |
| CN208918904U (en) * | 2018-09-10 | 2019-05-31 | 奥克斯空调股份有限公司 | A kind of axial-flow leaf component and air-conditioning |
-
2018
- 2018-09-10 CN CN201821474795.XU patent/CN208918904U/en active Active
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2019
- 2019-06-28 WO PCT/CN2019/093825 patent/WO2020052320A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020052320A1 (en) * | 2018-09-10 | 2020-03-19 | 宁波奥克斯电气股份有限公司 | Axial-flow fan assembly and air conditioner |
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| WO2020052320A1 (en) | 2020-03-19 |
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