CN108167222A - A kind of cooking apparatus quiet fan - Google Patents
A kind of cooking apparatus quiet fan Download PDFInfo
- Publication number
- CN108167222A CN108167222A CN201711272060.9A CN201711272060A CN108167222A CN 108167222 A CN108167222 A CN 108167222A CN 201711272060 A CN201711272060 A CN 201711272060A CN 108167222 A CN108167222 A CN 108167222A
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- Prior art keywords
- flabellum
- side edge
- hub
- cooking apparatus
- revolution
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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
-
- 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
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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 present invention provides a kind of cooking apparatus quiet fan, including fixed part, is rotatablely installed the hub in fixed part, the multiple flabellums being circumferentially distributed on the cylindrical outer surface of hub；Flabellum includes the front side edge that front is set to relative to direction of rotation and the back side edge for being set to rear, and with hub connection inner side edge and the outer side edges opposite with inner side edge, back side edge is higher than front side edge and is connected by lower concave curved surface therebetween, the outer end height of front side edge is less than inner end height, projected area of all flabellums on the surfaces of revolution and flabellum rotate back wall into projected area of the area on the surfaces of revolution between ratio be 86 96%.To obtain the wind sweeping area accounting of bigger, rotation speed of the fan is reduced in identical air output, to reduce noise.
Description
Technical field
The present invention relates to kitchen appliance technical field more particularly to a kind of cooking apparatus quiet fans.
Background technology
Noise when electromagnetic oven works is difficult to avoid that, heating noise when noise is essentially from magnetic field intercepts and heat dissipation
The noise that fan rotation is sent out.In the prior art by changing coil transmissions frequency or being made an uproar using sound-absorbing cookware to reduce heating
Sound, but due to the presence of magnetic field intercepts, effect is unsatisfactory.The vibrations when noise of fan is rotated mainly due to fan generate,
And the size shaken is then related to rotation speed of the fan, rotating speed is higher, and vibrations are bigger, and noise is also bigger, also related to blade structure.
For electromagnetic oven, inner space is limited, and the whole height of fan is limited, and in the prior art, the wind sweeping area of fan accounts for
Than too small, therefore 2500 turns of the turn up of fan at present, sound is larger.
Thus, it is necessory to provide a kind of technical solution, to overcome the problems of the above-mentioned prior art.
Invention content
The purpose of the present invention is to provide a kind of cooking apparatus quiet fan, to obtain the wind sweeping area accounting of bigger,
Rotation speed of the fan is reduced in identical air output, to reduce noise.
In order to achieve the above object, technical scheme is as follows：
A kind of cooking apparatus quiet fan including fixed part, is rotatablely installed the hub in fixed part, is circumferentially distributed in hub
Multiple flabellums on cylindrical outer surface；Flabellum includes being set to the front side edge in front relative to direction of rotation and is set to rear
Back side edge and with the inner side edge of hub connection and the outer side edges opposite with inner side edge, back side edge higher than front side edge and the two it
Between connected by lower concave curved surface, it is characterised in that：The outer end height of front side edge is less than inner end height, and all flabellums are on the surfaces of revolution
Projected area and flabellum rotate back wall into projected area of the area on the surfaces of revolution between ratio be 86-96%.
The outer end height of flabellum front side edge of the present invention is less than inner end height so that front side edge outer end tilts down, and extends
The length of outer side edges increases the wind sweeping area of fan.Projected area of all flabellums on the surfaces of revolution rotates back wall with flabellum
Into projected area of the area on the surfaces of revolution between ratio be 86-96%, further increase the wind sweeping area of fan.Separately
Outside, since fan blade area accounting is big, the eccentricity issues that fan is brought due to flabellum are reduced, so as to reduce due to eccentric and band
The vibrations come.Since present invention obtains the wind sweeping areas of bigger, it can reduce fan in identical air output and turn
Speed to reduce noise, in addition, also reduces the eccentricity issues of electric fan, weaker, noise smaller is shaken under same rotational speed.
In some of them embodiment of the invention, the line of the highs and lows of the outer side edges and the angle of the surfaces of revolution
For 15-30 degree.By the smaller outer side edges and surfaces of revolution angle, increase the length of outer side edges, so as to further increase swing flap
Area can be further reduced rotation speed of the fan in identical air output, reduce noise.It is being fanned in addition, further improving air-flow
Mobility status on leaf, more slow flabellum upper surface so that the flowing of air draught air-flow is more smooth, reduces the sound of air-flow flowing
Sound, and after windage reduction, utilization rate height, the air quantity of air-flow are big.
In some of them embodiments of the invention, the outer side edges being projected as on the surfaces of revolution is arc-shaped, this is arc-shaped
The center of circle is located on the central shaft of hub, and the cylindrical outer surface diameter ratio of the arc-shaped diameter and hub is 2.5-3.5.The ratio
Under, fan blade area accounting is big, can obtain the wind sweeping area of bigger, in similary air output, can further reduce rotating speed, subtract
Few noise.Flabellum is unlikely to excessive again simultaneously leads to flabellum vibrations aggravation.
In some of them embodiment of the invention, the number of the flabellum is odd number, and quantity is between 5-11.Odd number
Flabellum can reduce the resonance between flabellum, so as to reduce noise.In addition when flabellum quantity is less than 5, air volume adjustment unevenness
Increase, and quantity be more than 11 when, the quantity of flabellum is on the high side, can not obtain the shallower outer side edges in inclination angle, and windage is caused to increase,
Increase so as to cause noise.
In some of them embodiment of the invention, rib is equipped between the flabellum and hub.Rib increase flabellum and
Bonding strength between hub so as to reduce the vibrations of flabellum during the work time, reduces noise, furthermore, the rib is also
Fan blade area to obtain bigger provides stable support.
In some of them embodiment of the invention, the rib is formed in the flabellum upper surface towards direction of rotation, described
Rib, which is located between the front end in front of direction of rotation and flabellum upper surface, to be seamlessly transitted.This, which seamlessly transits structure, reduces reinforcement
Portion, to the resistance of wind, improves intake in fan rotation process, the structure in addition seamlessly transitted reduce due to resistance and
Caused by noise.
In some of them embodiment of the invention, there is the first intersection, rib between the rib and flabellum upper surface
Between the cylindrical outer surface of hub there is the second intersection, connected between first intersection and the second intersection by an even surface.
The even surface connects flabellum upper surface and hub, so that each position can be seamlessly transitted, and further reduces rib to wind
Resistance.
In some of them embodiment of the invention, first intersection is in the arc of outward side protrusion, the both ends of the arc
It is connect with the both ends of the second intersection.First intersection is in the arc that outward side protrudes, and greatly reduces the first intersection and second and hands over
The windage at line both ends allows the flow to smoothly pass over rib, while the structure does not influence the stiffening effect of rib again.
In some of them embodiment of the invention, the height of the outer end of the front side edge is also less than the lower face 0.5- of the hub
5mm.The wind sweeping area of fan is further increased, increases intake.In addition, when the outer end height of front side edge is less than under hub
During end face, the center of gravity of fan rotatable parts is reduced, rotation is more stablized.
In some of them embodiment of the invention, the lower concave curved surface for forming flabellum includes first surface and the second curved surface,
First surface is located at the front of the second curved surface in a rotational direction, and the angle of first surface and the surfaces of revolution is less than the second curved surface and rotation
Turn the angle in face, wherein first surface wall thickness is equal, and the thickness of the second curved surface upper end is gradually reduced.Using with the small folder of the surfaces of revolution
The first surface at angle steadily receives air inlet air-flow, recycles the second curved surface with surfaces of revolution angle bigger to increase the wind of outlet air
Speed, so that the flowing of air-flow is more smooth, noise smaller.In rotation, front side edge need to cut separation air and therefore occur flabellum
The wall thickness such as the possibility of vibrations is big, and first surface uses avoid flabellum front end from making flabellum front end shakiness hair since wall thickness does not wait
Raw vibrations or deformation, the possibility of the second curved surface vibrations is then relatively small, and the thickness of the upper end is gradually reduced, can reduce material
Expect dosage, in addition, after upper end thickness reduces, the integral central of fan rotatable parts easily moves down, and increases fan rotation
Stability reduces vibrations, reduces noise.
Description of the drawings
Fig. 1 is the overlooking the structure diagram of one embodiment of the invention；
Fig. 2 is the side structure schematic view of one embodiment of the invention；
Fig. 3 is the side structure schematic view one of the hub and a flabellum in one embodiment of the invention；
Fig. 4 is the side structure schematic view two of the hub and a flabellum in one embodiment of the invention；
Fig. 5 is the side structure schematic view three of the hub and a flabellum in one embodiment of the invention；
Fig. 6 is the projected area reference view referred in one embodiment of the invention.
Reference numeral：
Outer end A, inner end B, spacing m, central shaft X, diameter D1, diameter D2, front end C, angle theta, chord length d, the high b of leaf, leaf width
a；
Fixed part 10, hub 20, lower face 201, flabellum 30, front side edge 1, back side edge 2, inner side edge 3, outer side edges 4, lower concave curved
Face 5, first surface 51, the second curved surface 52, rib 6, the first intersection 61, the second intersection 62, even surface 63, flabellum upper surface
7。
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 to Fig. 6 is referred to, for a kind of diagram of one embodiment of cooking apparatus quiet fan of the present invention.
A kind of cooking apparatus quiet fan including fixed part 10, is rotatablely installed the hub 20 in fixed part 10, circumferential uniformly distributed
In multiple flabellums 30 on the cylindrical outer surface of hub 20.With reference to shown in Fig. 1 and 2, flabellum 30 includes setting relative to direction of rotation
Be placed in the front side edge 1 in front and be set to the back side edge 2 at rear and the inner side edge 3 that connect with hub 20 and with inner side edge 3 relatively
Outer side edges 4, back side edge 2 by lower concave curved surface 5 higher than front side edge 1 and being connected therebetween.
With reference to shown in Fig. 1 and 3, the outer end A height of front side edge 1 is less than inner end B height so that 1 outer end of front side edge dips down
Tiltedly, the length of outer side edges 4 is extended, increases the wind sweeping area of fan.With reference to shown in Fig. 6, single flabellum 30 is on the surfaces of revolution
Projected area for S3, hub 20 the surfaces of revolution projected area S2, flabellum rotate back wall into projection of the area on the surfaces of revolution
For S1, flabellum 30 area accounting K=n*S3/S1, n are 30 quantity of flabellum, and the wherein K of the present embodiment is between 86%-96%,
Since fan blade area accounting is big, the eccentricity issues that fan is brought due to flabellum are reduced, are brought so as to reduce due to eccentric
Vibrations.
Specifically, between the projection of the back side edge 2 of previous flabellum 30 and the front side edge 1 of latter flabellum 30 on the surfaces of revolution
Spacing m is 2-8mm, and so as to obtain the accounting that K is between 86%-96%, the present embodiment m is preferably 2-5mm.
The present embodiment obtains the wind sweeping area of Qu Geng great by above structure, and wind can be reduced in identical air output
Rotating speed is fanned, to reduce noise.In addition, the eccentricity issues of electric fan 30 are reduced, are shaken under same rotational speed weaker, noise is more
It is small.
Preferably, with reference to shown in Fig. 4, line (also known as chord length d) and the surfaces of revolution of the highs and lows of outer side edges 4
Angle theta is 15-30 degree.Wherein, the surfaces of revolution is any point taken on fan rotatable parts (predominantly hub and flabellum), in wind
The circle formed after fan rotation, the face residing for the circle is the surfaces of revolution, each on rotary part due to being rotated around same shaft
The spinning face of point is parallel, and the lower face 201 of the present embodiment hub 20 is plane and, the lower face of optional hub 20 vertical with shaft
201 as with reference to the surfaces of revolution.The present embodiment increases the length of outer side edges 4, so as to further by the small angle that θ is 15-30 degree
Increase wind sweeping area, can be further reduced rotation speed of the fan in identical air output, reduce noise.Wherein angle is preferred
18-22 degree.The structure further improves mobility status of the air-flow on flabellum, more slow 30 upper surface of flabellum so that air draught gas
After stream flowing is more smooth, reduces the sound of air-flow flowing, and windage reduces, utilization rate height, the air quantity of air-flow are big.
With reference to shown in Fig. 5, best, the height of the outer end A of front side edge 1 is also less than the height of the lower face 201 of the hub 20
Degree, difference in height D=0.5-5mm, preferably 0.5-2mm to further increase the wind sweeping area of fan, increase intake.Separately
Outside, when the outer end A height of front side edge 1 is less than the lower face 201 of hub 20, the center of gravity of fan rotatable parts is reduced, rotation is more
Add stabilization, alleviate vibrations.
Best, the number of flabellum 30 is odd number, and odd number flabellum 30 can reduce the resonance between flabellum 30, so as to
Reduce noise.Quantity is preferably ranged between 5-11, because when 30 quantity of flabellum is less than 5, air volume adjustment unevenness increases, and
Since the mutual counteracting of each 30 unbalance stress of flabellum will be weakened, the vibrations of fan are big.And quantity be more than 11 when, flabellum 30
Quantity it is on the high side, the smaller gentle outer side edges 4 of θ can not be obtained, windage is caused to increase, so as to cause noise increase.Flabellum 30
Quantity is best with 7 or 9.
Wherein, with reference to shown in Fig. 1 and 6, outer side edges 4 are projected as arc-shaped, the arc-shaped center of circle position on the surfaces of revolution
In on the central shaft X of hub 20.It is arc-shaped to ensure in similary space, 30 area of flabellum of bigger is obtained, so as to obtain maximum
Intake.
Preferably, the cylindrical outer surface diameter D2 ratios of the arc-shaped diameter D1 and hub 20 are 2.5-3.5.The ratio
Under, 30 area accounting of flabellum is big, can obtain the wind sweeping area of bigger, in similary air output, can further reduce rotating speed,
Reduce noise.Flabellum 30 is unlikely to excessive again simultaneously, and leads to the vibrations aggravation of flabellum 30.
With reference to shown in Fig. 4, when flabellum 30 selects 7, when fan diameter is between 110-125mm, chord length d may be selected
40-50mm, the high b selected as 10.3-25mm of difference in height, that is, leaf of 4 the highest point and the lowest point of outer side edges, and leaf width a is then in 34.6-
Between 48.3mm.
When flabellum 30 increases, the stress of single fan blade 30 increases, and declines with the connective stability of hub 20, easily occurs
Vibrations, so as to influence air output and muting function.It is equipped with and strengthens with reference to shown in Fig. 1 and 2, between the present embodiment flabellum 30 and hub 20
Portion 6 increases the bonding strength between flabellum 30 and hub 20 by rib 6, so as to reduce flabellum 30 during the work time
Vibrations reduce noise, in addition, rib 6 also provides stable support to obtain 30 wind sweeping area of flabellum of bigger.
Preferably, rib 6 is formed in the flabellum upper surface 7 towards direction of rotation, the rib 6 is located at direction of rotation
It is seamlessly transitted between the front end C in front and flabellum upper surface 7, to reduce rib 6 in fan rotation process to the resistance of wind,
Intake is improved, reduces noise.
With reference to shown in Fig. 2, there is the first intersection 61, the circle of rib 6 and hub 20 between rib 6 and flabellum upper surface 7
Between outer surface of column there is the second intersection 62, connected between 61 and second intersection 62 of the first intersection by an even surface 63.
It seamlessly transits between front end C that the present embodiment is not only located in rib 6 in front of direction of rotation and flabellum upper surface 7, also passes through
The even surface 63 causes each position of connection flabellum upper surface 7 and hub 20 that can seamlessly transit, and makes resistance of the rib 6 to wind
Power smaller.
In conjunction with shown in Fig. 1, best, first intersection 61 is in the arc of the protrusion of outward side 4, the both ends of the arc
It is connect with the both ends of the second intersection 62.The first intersection of the present embodiment 61 is in the arc that outward side 4 protrudes, and greatly reduces first
The windage at 61 and second intersection of intersection, 62 both ends allows the flow to smoothly pass over rib 6, while the structure does not influence to add again
The stiffening effect in strong portion 6.Wherein, the both ends of the first intersection 61 can be close proximity to the upper and lower ends of 30 inner side edge 3 of flabellum, so as to the greatest extent
Amount eliminates the angle connection between flabellum 30 and hub 20, reduces turbulent flow, improves intake.
With reference to shown in Fig. 1 and 2, the lower concave curved surface 5 of composition flabellum 30 includes 51 and second curved surface 52 of first surface,
First surface 51 is located at the front of the second curved surface 52 on direction of rotation, and first surface 51 and the angle of the surfaces of revolution are less than the second curved surface
52 with the angle of the surfaces of revolution, wherein 51 wall thickness of first surface is equal, and the thickness of 52 upper end of the second curved surface is gradually reduced.Using with
Steady the second curved surface for receiving air inlet air-flow, recycling with surfaces of revolution angle bigger of the first surface 51 of the small angle of the surfaces of revolution
52 increase the wind speed of outlet air, by the two so that the flowing of air-flow is more smooth, noise smaller.Flabellum 30 is preceding in rotation
The wall thickness such as the possibility that side 1 need to cut separation air therefore shake is big, and first surface 51 uses, before avoiding flabellum 30
End makes 30 front end shakiness of flabellum that vibrations or deformation occur since wall thickness does not wait.The possibility of second curved surface 52 vibrations is then opposite
It is smaller, the thickness of the upper end is gradually reduced, material utilization amount can be reduced, in addition, after upper end thickness reduces, fan rotatable parts
Integral central easily moves down, and increases the stability of fan rotation, reduces vibrations, reduce noise.
When the present embodiment is applied on electromagnetic oven, rotation speed of the fan can be less than 2000rpm or even can be down to 1500rpm
It can reach good heat dissipation effect, rotating speed 500rpm at least low than conventional fan；Fan noise control is in 45dB hereinafter, comparing
In at least low 5dB of conventional fan.
Unless the context clearly dictates otherwise and limit, such as there are term " " center ", " transverse direction ", " thickness ", " on ",
" under ", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " radial direction ", the orientation of the instructions such as " circumferential direction " or position relationship be
It is the present invention and simplified description for ease of description, without referring to because being interpreted as based on orientation shown in the drawings or position relationship
Show or imply that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, therefore cannot manage
It solves as limitation of the present invention.
In addition, there are terms " first ", " second " etc. by Wen Zhongru, then its be only used for description purpose, and it is not intended that
Indicate or imply relative importance or the implicit quantity for indicating indicated technical characteristic." first ", " are defined as a result,
One or more this feature can be expressed or be implicitly included to two " etc. feature.As there are " multiple ", then its meaning
It is two or more, is limited unless clearly specific.
It unless the context clearly dictates otherwise and limits, Wen Zhongru has " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be direct
It is connected, can also be indirectly connected by intermediary, can is connection inside two elements or the interaction of two elements
Relationship.For the ordinary skill in the art, the tool of above-mentioned term in the present invention can be understood as the case may be
Body meaning.
It unless the context clearly dictates otherwise and limits, Wen Zhongru is there are fisrt feature "above" or "below" second feature
Description, it can be understood as be that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.
Moreover, fisrt feature second feature " on ", " top " and " above " but fisrt feature right over second feature or tiltedly
Top is merely representative of fisrt feature level height higher than second feature.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, all should by the change or replacement that can be readily occurred in
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of cooking apparatus quiet fan including fixed part, is rotatablely installed the hub in fixed part, is circumferentially distributed in the circle of hub
Multiple flabellums on outer surface of column；Flabellum includes being set to the front side edge in front relative to direction of rotation and is set to rear
Back side edge and with the inner side edge of hub connection and the outer side edges opposite with inner side edge, back side edge is higher than front side edge and therebetween
It is connected by lower concave curved surface, it is characterised in that：The outer end height of front side edge is less than inner end height, and all flabellums are on the surfaces of revolution
Projected area and flabellum rotate back wall into projected area of the area on the surfaces of revolution between ratio be 86-96%.
2. a kind of cooking apparatus quiet fan as described in claim 1, it is characterised in that：The peak of the outer side edges and
The line of minimum point and the angle of the surfaces of revolution are 15-30 degree.
3. a kind of cooking apparatus quiet fan as described in claim 1, it is characterised in that：The outer side edges are on the surfaces of revolution
Be projected as arc-shaped, which is located on the central shaft of hub, the cylindrical outer surface of the arc-shaped diameter and hub
Diameter ratio is 2.5-3.5.
4. a kind of cooking apparatus quiet fan as described in claim 1, it is characterised in that：The number of the flabellum is strange
Number, and quantity is between 5-11.
5. a kind of cooking apparatus quiet fan as described in claim 1, it is characterised in that：It is equipped between the flabellum and hub
Rib.
6. a kind of cooking apparatus quiet fan as claimed in claim 5, it is characterised in that：The rib is formed in direction
The flabellum upper surface of direction of rotation, the rib are located at smoothed between the front end in front of direction of rotation and flabellum upper surface
It crosses.
7. a kind of cooking apparatus quiet fan as claimed in claim 5, it is characterised in that：The rib and flabellum upper table
Between face there is the first intersection, there is the second intersection, first intersection and second between rib and the cylindrical outer surface of hub
It is connected between intersection by an even surface.
8. a kind of cooking apparatus quiet fan as claimed in claim 7, it is characterised in that：First intersection is in outward
The arc that side protrudes, the both ends of the arc are connect with the both ends of the second intersection.
9. a kind of cooking apparatus quiet fan as described in claim 1, it is characterised in that：The height of the outer end of the front side edge
Degree is also less than the lower face 0.5-5mm of the hub.
10. a kind of cooking apparatus quiet fan as described in claim 1, it is characterised in that：Form the described recessed of flabellum
Curved surface includes first surface and the second curved surface, and first surface is located at the front of the second curved surface in a rotational direction, first surface and
The angle of the surfaces of revolution is less than the angle of the second curved surface and the surfaces of revolution, and wherein first surface wall thickness is equal, and the second curved surface upper end
Thickness is gradually reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711272060.9A CN108167222B (en) | 2017-12-06 | 2017-12-06 | A kind of cooking apparatus quiet fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711272060.9A CN108167222B (en) | 2017-12-06 | 2017-12-06 | A kind of cooking apparatus quiet fan |
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| Publication Number | Publication Date |
|---|---|
| CN108167222A true CN108167222A (en) | 2018-06-15 |
| CN108167222B CN108167222B (en) | 2019-10-22 |
Family
ID=62525207
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| CN106870451A (en) * | 2015-12-11 | 2017-06-20 | 台达电子工业股份有限公司 | Impeller and fan |
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| CN108167222B (en) | 2019-10-22 |
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