CN106968973A - Axial flow blower - Google Patents
Axial flow blower Download PDFInfo
- Publication number
- CN106968973A CN106968973A CN201710322216.3A CN201710322216A CN106968973A CN 106968973 A CN106968973 A CN 106968973A CN 201710322216 A CN201710322216 A CN 201710322216A CN 106968973 A CN106968973 A CN 106968973A
- Authority
- CN
- China
- Prior art keywords
- axial
- flow
- flow windwheel
- windwheel
- flabellum
- 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.)
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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
- 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
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
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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
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
- F04D29/386—Skewed blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Abstract
The invention discloses a kind of axial flow blower, including：First axial-flow windwheel, the first axial-flow windwheel is provided with the first flabellum；Second axial-flow windwheel, the second axial-flow windwheel is located at the air-out side of the first axial-flow windwheel, and the second axial-flow windwheel is provided with the second flabellum, and the bending direction of the first flabellum is opposite with the bending direction of the second flabellum；And drive component, drive component is connected to drive the first axial-flow windwheel and the second axial-flow windwheel to rotate respectively with the first axial-flow windwheel, the second axial-flow windwheel, first axial-flow windwheel is rotated around first direction, and the second axial-flow windwheel is rotated around second direction, and second direction is opposite with first direction.According to the axial flow blower of the present invention, working speed and noise can be greatly lowered, or improves air-supply air quantity, or reduces the physical dimensions such as flabellum diameter, the performance of axial flow blower is lifted.Meanwhile, reverse air-supply can be effectively realized, bidirectional reversible blower fan can be achieved.
Description
Technical field
The present invention relates to aeration technology field, more particularly, to a kind of axial flow blower.
Background technology
Current household electrical appliances market both at home and abroad, axial flow blower application is wider, such as air-conditioning, refrigerator, electric fan, micro-wave oven series production
Product, its air quantity and noise are the main performance index of blower fan/fan, especially require that air quantity is big and noise under certain conditions
It is low, the characteristics of some scenes also need to high wind speed and are uniformly distributed.The application of household electrical appliances market axial flow blower/fan is generally focused on
Flabellum diameter reduces chi in 70-900mm, rotating speed 500-3000r/min, air quantity 40-1200m3/h while air quantity is improved
Very little, reduction noise is always industry target.With fluid technique and software and hardware science and technology development, blower fan/fan is entered
Row design optimization turns into general technology to obtain the technologies such as optimal air quantity, reduction noise, but industry is to compact in size, blower fan
The pursuit of air quantity maximization is endless.Currently, the aerodynamic noise of low pressure axial-flow fan/fan is still made an uproar for the main of household appliances
Sound is originated, and it mainly constitutes the rotational noise caused by impeller rotation, and household electrical appliances noise level is further reduced as restriction industry
One of main bottleneck.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the present invention proposes a kind of axle
Flow fan, the axial flow blower has the advantages that performance is high.
Axial flow blower according to embodiments of the present invention, including：First axial-flow windwheel, first axial-flow windwheel is provided with the
One flabellum；Second axial-flow windwheel, second axial-flow windwheel is located at the air-out side of first axial-flow windwheel, second axle
Flow wind wheel and be provided with the second flabellum, the bending direction of first flabellum is opposite with the bending direction of second flabellum；And drive
Dynamic component, the drive component is connected to drive described first respectively with first axial-flow windwheel, second axial-flow windwheel
Axial-flow windwheel and second axial-flow windwheel are rotated, and first axial-flow windwheel is rotated around first direction, the second axle stream wind
Wheel is rotated around second direction, and the second direction is opposite to the first direction.
Axial flow blower according to embodiments of the present invention, by setting the second axle stream wind in the air-out side of the first axial-flow windwheel
Wheel, and make the second axial-flow windwheel the second flabellum and the first axial-flow windwheel the first flabellum bending direction on the contrary, while making first
The rotation direction of the rotation direction of axial-flow windwheel and the second axial-flow windwheel on the contrary, working speed and noise can be greatly lowered, or
Air-supply air quantity is improved, or reduces the physical dimensions such as flabellum diameter, the performance of axial flow blower is lifted.Meanwhile, can effectively it realize reversely
Air-supply, can be achieved bidirectional reversible blower fan.
According to some embodiments of the present invention, the extension line of the pivotal axis of second axial-flow windwheel and the first axle stream
The extension line of the pivotal axis of wind wheel is overlapped.
According to some embodiments of the present invention, the shape of first flabellum is identical with the shape of second flabellum.
According to some embodiments of the present invention, the size of first flabellum is identical with the size of second flabellum.
According to some embodiments of the present invention, on the axis direction of the pivotal axis of first axial-flow windwheel, described
Minimum range between one flabellum and second flabellum is L, and the L is met：L≥5mm.
According to some embodiments of the present invention, the drive component includes a motor, first axial-flow windwheel
It is directly connected to one in second axial-flow windwheel with the motor, another passes through transmission with the motor
Component is connected.
According to some embodiments of the present invention, the drive component includes two motors, one of them described driving
Motor is connected with first axial-flow windwheel, and another described motor is connected with second axial-flow windwheel.
In some embodiments of the invention, two motors are located at first axial-flow windwheel and described second
Between axial-flow windwheel.
In some embodiments of the invention, first axial-flow windwheel and second axial-flow windwheel are located at described in two
Between motor.
In some embodiments of the invention, one in two motors be located at first axial-flow windwheel and
Between second axial-flow windwheel.
In some embodiments of the invention, two motors are respectively positioned on the remote institute of first axial-flow windwheel
State the side of the side of the second axial-flow windwheel or remote first axial-flow windwheel of second axial-flow windwheel.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the structural representation of axial flow blower according to embodiments of the present invention；
Fig. 2 is the structural representation of axial flow blower in accordance with another embodiment of the present invention；
Fig. 3 is the structural representation of the axial flow blower according to further embodiment of the present invention；
Fig. 4 is the structural representation of the axial flow blower according to another embodiment of the invention.
Reference：
Axial flow blower 100,
First axial-flow windwheel 1, the first flabellum 11,
Second axial-flow windwheel 2, the second flabellum 21,
Motor 3, support 4.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " interior ", " outer ", " clockwise ", " counterclockwise ",
The orientation or position relationship of instructions such as " axial directions " are, based on orientation shown in the drawings or position relationship, to be for only for ease of description originally
Invention and simplified description, rather than instruction or the signified device of hint or element must be with specific orientation, with specific square
Position construction and operation, therefore be not considered as limiting the invention.In addition, define " first ", the feature of " second " can be with
Express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Axial flow blower 100 according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 4.
As Figure 1-Figure 4, axial flow blower 100 according to embodiments of the present invention, including the first axial-flow windwheel 1, the second axle
Flow wind wheel 2 and drive component.
Specifically, the first axial-flow windwheel 1 is provided with the first flabellum 11, and the second axial-flow windwheel 2 is located at the first axial-flow windwheel 1
Air-out side, the second axial-flow windwheel 2 is provided with the second flabellum 21, and the bending direction of the first flabellum 11 is curved with the second flabellum 21
It is bent in opposite direction.Drive component be connected respectively with the first axial-flow windwheel 1, the second axial-flow windwheel 2 with drive the first axial-flow windwheel 1 and
Second axial-flow windwheel 2 is rotated, and the first axial-flow windwheel 1 is rotated around first direction, and the second axial-flow windwheel 2 is rotated around second direction, the
Two directions are opposite with first direction.
As shown in figure 1, the first axial-flow windwheel 1 can be along rotating clockwise, the second axial-flow windwheel 2 can turn along counterclockwise
Dynamic, wind can enter from the side of the first axial-flow windwheel 1, and from the blowout of the side of the second axial-flow windwheel 2, this kind of structure greatly improves axle stream wind
The performance of machine 100, in the case of size, rotating speed identical, can greatly increase air quantity, zero static pressure maximum quantity of wind can increase by 60% with
On；In the case of size, air quantity identical, rotating speed can be substantially reduced, highest can reduce by more than 50%；In air quantity, rotating speed phase
With in the case of, physical dimension can be reduced, maximum can reduce more than 35%；Under the premise of the performance of primitive axis flow fan 100 is kept,
Using rotating speed, physical dimension change noise highest can be made to reduce by more than 10 decibels.
Meanwhile, by the direction of rotation for changing the first axial-flow windwheel 1 and the second axial-flow windwheel 2, it is possible to achieve effective anti-
To air-supply, and inverted ventilation air quantity generally forward air quantity 65%, high person is up to 70~80%, and inverted ventilation blast is Positive work blast
50%, the reverse air output of common ventilation machine is only 30~40%.In addition, carrying out spy to the second flabellum 21 according to air-flow angle
Different design, can both realize positive air-supply, can also realize reverse exhausting, and the performance of two kinds of situations is substantially suitable, such as reverse flow
Amount and blast are of substantially equal with rotating forward flow and blast.
In correlation technique, to meet the demands such as household electrical appliance radiating, ventilation, electric fan/fan is used to meet certain
In the case of air quantity, it is difficult to reach reduction working speed, reduce physical dimension to realize the target of reduction noise and miniaturization；
Under certain working speed, it is difficult to reach diminution physical dimension, increase air quantity to realize ventilation, radiating requirements and the mesh of miniaturization
Mark；In the case of certain physical dimension, it is difficult to realize the target of Wind Volume and the slow-speed of revolution；In a word, slow-speed of revolution low noise, small size
Wind Volume turns into the principal contradiction and bottleneck of conventional axial flow blower/fan performance lifting.
Axial flow blower 100 according to embodiments of the present invention, by setting the second axle in the air-out side of the first axial-flow windwheel 1
Flow wind wheel 2, and make the second flabellum 21 of the second axial-flow windwheel 2 and the bending direction of the first flabellum 11 of the first axial-flow windwheel 1 on the contrary,
Make the rotation direction of the first axial-flow windwheel 1 simultaneously with the rotation direction of the second axial-flow windwheel 2 and turn on the contrary, work can be greatly lowered
Speed and noise, or air-supply air quantity is improved, or reduce the physical dimensions such as flabellum diameter, lift the performance of axial flow blower 100.Meanwhile,
Reverse air-supply can be effectively realized, bidirectional reversible blower fan can be achieved.
In some embodiments of the invention, as Figure 1-Figure 4, the extension line of the pivotal axis of the second axial-flow windwheel 2 with
The extension line of the pivotal axis of first axial-flow windwheel 1 is overlapped.Thus, it is possible to preferably reduce the size of axial flow blower 100, axle is reduced
The noise and rotating speed of flow fan 100, improve the air quantity of axial flow blower 100, lift the performance of axial flow blower 100.
In some embodiments of the invention, as Figure 1-Figure 4, the shape of the first flabellum 11 and the shape of the second flabellum 21
Shape is identical.Thus, it can not only simplify the structure of axial flow blower 100, save the production cycle, reduce production cost, can also be more
Reduce the size of axial flow blower 100 well, reduce the noise and rotating speed of axial-flow windwheel, improve the air quantity of axial flow blower 100, lifting
The performance of axial flow blower 100.
Certainly, as Figure 1-Figure 4, the size of the first flabellum 11 is identical with the size of the second flabellum 21.Not only can letter
Change the structure of axial flow blower 100, save the production cycle, reduce production cost, can also preferably reduce the chi of axial flow blower 100
It is very little, the noise and rotating speed of axial-flow windwheel are reduced, the air quantity of axial flow blower 100 is improved, the performance of axial flow blower 100 is lifted.
In some embodiments of the invention, on the axis direction of the pivotal axis of the first axial-flow windwheel 1, the first flabellum 11
And the second minimum range between flabellum 21 is L, L is met：L≥5mm.Thus, in the first axial-flow windwheel 1 and the second axial-flow windwheel
During 2 rotate, it can prevent the first flabellum 11 and the second flabellum 21 from colliding, be worked so as to improve axial flow blower 100
Reliability.
In some embodiments of the invention, drive component includes a motor 3, the first axial-flow windwheel 1 and second
One in axial-flow windwheel 2 is directly connected to motor 3, and another passes through transmission component such as gear train with motor 3
Part etc. is connected.Thus, it is possible to reduce the cost of motor 3.
In other embodiments of the present invention, as Figure 1-Figure 4, drive component includes two motors 3, wherein
One motor 3 is connected with the first axial-flow windwheel 1, and another motor 3 is connected with the second axial-flow windwheel 2.Thus it is easy to
Realize the independent control to the first axial-flow windwheel 1 and the second axial-flow windwheel 2.
In some examples of the present invention, as shown in Fig. 2 two motors 3 are located at the first axial-flow windwheel 1 and the second axle
Between stream wind wheel 2.In other examples of the present invention, as shown in figure 1, the first axial-flow windwheel 1 and the second axial-flow windwheel 2 are located at
Between two motors 3.In the other example of the present invention, as shown in figure 4, one in two motors 3 is located at
Between first axial-flow windwheel 1 and the second axial-flow windwheel 2.In still other example of the present invention, as shown in figure 3, two driving electricity
Machine 3 is respectively positioned on side or the remote first axle stream of the second axial-flow windwheel 2 of remote second axial-flow windwheel 2 of the first axial-flow windwheel 1
The side of wind wheel 1.
It should be noted that the position of the axial-flow windwheel 1 of motor 3 and first and the second axial-flow windwheel 2 can according to
Family needs to be designed.
In some embodiments of the invention, more multigroup axial-flow windwheel can also be used, as long as to every group of axial-flow windwheel
The bending direction of flabellum and the rotation direction of axial-flow windwheel rationally designed, it is ensured that realize miniaturization, slow-speed of revolution low noise
Sound, Wind Volume.
Other compositions of axial-flow windwheel according to embodiments of the present invention can be using conventional electric fan such as nut, pin
Part.
The axial flow blower 100 according to four specific embodiments of the invention is described below with reference to Fig. 1-Fig. 4, is worth what is understood
It is, it is described below simply exemplary, it is intended to for explaining the present invention, and to be not considered as limiting the invention.
Embodiment one
As shown in figure 1, axial flow blower 100 of the present invention mainly includes the first axial-flow windwheel 1, the and of the second axial-flow windwheel 2
Two motors 3, two motors 3 are connected by support 4 with other structures such as housing respectively, the first axial-flow windwheel 1
And second axial-flow windwheel 2 be located between two motors 3.First axial-flow windwheel 1 is provided with the first flabellum 11, the second axle stream wind
Wheel 2 is provided with the second flabellum 21, and the first flabellum 11 is using shaft end nut and pin with being matched somebody with somebody close to its motor 3 by gap
Conjunction is connected and fixed, and direction of rotation is clockwise, and the second flabellum 21 is using shaft end nut and pin with leading to close to its motor 3
Cross gap cooperation to be connected and fixed, direction of rotation is counterclockwise, the bending side of the bending direction of the first flabellum 11 and the second flabellum 21
To on the contrary, on the axis direction of the pivotal axis of the first axial-flow windwheel 1, the most narrow spacing between the first flabellum 11 and the second flabellum 21
Met from for L, L：L≥5mm.
Wherein, the extension line weight of the pivotal axis of the extension line of the pivotal axis of the first axial-flow windwheel 1 and the second axial-flow windwheel 2
Close, the size and shape all same of the first flabellum 11 and the second flabellum 21.
In the case of size, rotating speed identical, air quantity can be greatly increased, zero static pressure maximum quantity of wind can increase by 60% with
On；In the case of size, air quantity identical, rotating speed can be substantially reduced, highest can reduce by more than 50%；In air quantity, rotating speed phase
With in the case of, physical dimension can be reduced, maximum can reduce more than 35%；Under the premise of the performance of primitive axis flow fan 100 is kept,
Using rotating speed, physical dimension change noise highest can be made to reduce by more than 10 decibels.
According to the axial flow blower 100 of the present invention, reverse air-supply can be effectively realized, the performance of axial flow blower 100 is greatly improved：
Working speed and noise can be greatly lowered, or increases substantially air-supply air quantity, or significantly reduces the dimensionings such as flabellum diameter
It is very little.
Embodiment two
As shown in Fig. 2 the present embodiment is roughly the same with the structure of embodiment one, wherein identical part is attached using identical
Icon is remembered, the difference is that only that two motors 3 are located between the first axial-flow windwheel 1 and the second axial-flow windwheel 2.
Embodiment three
As shown in figure 3, the present embodiment is roughly the same with the structure of embodiment one, wherein identical part is attached using identical
Icon is remembered, the difference is that only that two motors 3 are respectively positioned on one away from the second axial-flow windwheel 2 of the first axial-flow windwheel 1
Side.
Example IV
As shown in figure 4, the present embodiment is roughly the same with the structure of embodiment one, wherein identical part is attached using identical
Icon is remembered, the difference is that only that the motor 3 that the second axial-flow windwheel 2 of driving is rotated is located at the first axial-flow windwheel 1 and second
Between axial-flow windwheel 2, the motor 3 that the first axial-flow windwheel 1 of driving is rotated is located at the remote second axle stream of the first axial-flow windwheel 1
The side of wind wheel 2.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described
Structure, material or feature are contained at least one embodiment of the present invention or example.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can in an appropriate manner be combined in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (11)
1. a kind of axial flow blower, it is characterised in that including：
First axial-flow windwheel, first axial-flow windwheel is provided with the first flabellum；
Second axial-flow windwheel, second axial-flow windwheel is located at the air-out side of first axial-flow windwheel, the second axle stream
Wind wheel is provided with the second flabellum, and the bending direction of first flabellum is opposite with the bending direction of second flabellum；With
Drive component, the drive component is connected to drive respectively with first axial-flow windwheel, second axial-flow windwheel
State the first axial-flow windwheel and second axial-flow windwheel is rotated, first axial-flow windwheel is rotated around first direction, described second
Axial-flow windwheel is rotated around second direction, and the second direction is opposite to the first direction.
2. axial flow blower according to claim 1, it is characterised in that the extension line of the pivotal axis of second axial-flow windwheel
Overlapped with the extension line of the pivotal axis of first axial-flow windwheel.
3. axial flow blower according to claim 1, it is characterised in that the shape of first flabellum and second flabellum
Shape it is identical.
4. axial flow blower according to claim 1, it is characterised in that the size of first flabellum and second flabellum
Size it is identical.
5. axial flow blower according to claim 1, it is characterised in that in the axis of the pivotal axis of first axial-flow windwheel
On direction, the minimum range between first flabellum and second flabellum is L, and the L is met：L≥5mm.
6. axial flow blower according to claim 1, it is characterised in that the drive component includes a motor, institute
One stated in the first axial-flow windwheel and second axial-flow windwheel is directly connected to the motor, and another drives with described
Dynamic motor is connected by transmission component.
7. axial flow blower according to claim 1, it is characterised in that the drive component includes two motors, its
In a motor be connected with first axial-flow windwheel, another described motor and second axial-flow windwheel
Connection.
8. axial flow blower according to claim 7, it is characterised in that two motors are located at the first axle stream
Between wind wheel and second axial-flow windwheel.
9. axial flow blower according to claim 7, it is characterised in that first axial-flow windwheel and the second axle stream wind
Wheel is located between two motors.
10. axial flow blower according to claim 7, it is characterised in that one in two motors is located at institute
State between the first axial-flow windwheel and second axial-flow windwheel.
11. axial flow blower according to claim 7, it is characterised in that two motors are respectively positioned on described first
The side of remote second axial-flow windwheel of axial-flow windwheel or remote first axial-flow windwheel of second axial-flow windwheel
Side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710322216.3A CN106968973A (en) | 2017-05-09 | 2017-05-09 | Axial flow blower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710322216.3A CN106968973A (en) | 2017-05-09 | 2017-05-09 | Axial flow blower |
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| Publication Number | Publication Date |
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| CN106968973A true CN106968973A (en) | 2017-07-21 |
Family
ID=59331687
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710322216.3A Pending CN106968973A (en) | 2017-05-09 | 2017-05-09 | Axial flow blower |
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Application publication date: 20170721 |