CN108167222B - A kind of cooking apparatus quiet fan - Google Patents
A kind of cooking apparatus quiet fan Download PDFInfo
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- CN108167222B CN108167222B CN201711272060.9A CN201711272060A CN108167222B CN 108167222 B CN108167222 B CN 108167222B CN 201711272060 A CN201711272060 A CN 201711272060A CN 108167222 B CN108167222 B CN 108167222B
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- flabellum
- side edge
- hub
- cooking apparatus
- revolution
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- 238000010411 cooking Methods 0.000 title claims abstract description 18
- 241000883990 Flabellum Species 0.000 claims abstract description 86
- 230000002787 reinforcement Effects 0.000 claims description 27
- 238000010408 sweeping Methods 0.000 abstract description 14
- 230000007423 decrease Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 206010044565 Tremor Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- 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
Landscapes
- 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 multiple flabellums being circumferentially distributed on the cylindrical outer surface of hub in the hub of fixed part；Flabellum includes the front side edge for being set to front and the back side edge for being set to rear relative to direction of rotation, 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 lower than inner end height, all flabellums the projected area on the surfaces of revolution and flabellum rotation back wall at ratio of the area between the projected area on the surfaces of revolution be 86-96%.To obtain bigger wind sweeping area accounting, 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 technique
Electromagnetic oven work when noise be difficult to avoid that, heating noise when noise is mainly from magnetic field intercepts, and heat dissipation
The noise that fan rotation issues.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, the effect is unsatisfactory.The vibration when noise of fan is rotated mainly due to fan generates,
And the size shaken is then related to rotation speed of the fan, revolving speed is higher, and vibration is 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 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.
Summary of the invention
The purpose of the present invention is to provide a kind of cooking apparatus quiet fans, to obtain bigger wind sweeping area accounting,
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 are rotatablely installed in the hub of fixed part, are 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 being 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 be 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 be lower than inner end height, all flabellums are on the surfaces of revolution
Projected area and flabellum rotation back wall at ratio of the area between the projected area on the surfaces of revolution be 86-96%.
The outer end height of flabellum front side edge of the present invention is extended lower than inner end height so that front side edge outer end tilts down
The length of outer side edges increases the wind sweeping area of fan.Projected area of all flabellums on the surfaces of revolution and flabellum rotate back wall
At ratio of the area between the projected area on the surfaces of revolution be 86-96%, further increase the wind sweeping area of fan.Separately
Outside, since fan blade area accounting is big, reduce fan due to flabellum bring eccentricity issues, thus reduce due to bias band
The vibration come.Since present invention obtains bigger wind sweeping areas, fan can be reduced in identical air output and is turned
Speed in addition, also reduces the eccentricity issues of electric fan to reduce noise, shakes under same rotational speed weaker, and noise is smaller.
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 lesser outer side edges and surfaces of revolution angle, increase the length of outer side edges, 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 reduce the sound of air-flow flowing so that the flowing of air draught air-flow is more smooth
Sound, and after windage reduction, the utilization rate of air-flow is high, air quantity is 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 axis 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, and can get bigger wind sweeping area can further decrease revolving speed, subtract in same air output
Few noise.Flabellum is unlikely to excessive again simultaneously leads to flabellum vibration 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, to reduce noise.In addition when flabellum quantity is less than 5, air volume adjustment unevenness
Increase, and when quantity is more than 11, the quantity of flabellum is on the high side, can not obtain the more gentle outer side edges in inclination angle, and cause windage to increase,
So as to cause noise increase.
In some of them embodiment of the invention, reinforcement part is equipped between the flabellum and hub.Reinforcement part increase flabellum and
Bonding strength between hub reduces noise to reduce the vibration of flabellum during the work time, furthermore, the reinforcement part is also
Fan blade area to obtain bigger provides stable support.
In some of them embodiment of the invention, the reinforcement part is formed in the flabellum upper surface towards direction of rotation, described
Reinforcement part, which is located between the front end and flabellum upper surface in front of direction of rotation, to be seamlessly transitted.The smooth transition 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, reinforcement part between the reinforcement part and flabellum upper surface
There is the second intersection between the cylindrical outer surface of hub, connected between first intersection and the second intersection by an even surface.
The even surface connects flabellum upper surface and hub, seamlessly transit each position can, further decreases reinforcement part to wind
Resistance.
In some of them embodiment of the invention, first intersection is in outward side arc outstanding, the both ends of the arc
It is connect with the both ends of the second intersection.First intersection is in outward side arc outstanding, greatly reduces the first intersection and second and hands over
The windage at line both ends allows the flow to smoothly pass over reinforcement part, while the structure does not influence the reinforcing effect of reinforcement part 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 end surface 0.5- of the hub
5mm.The wind sweeping area of fan is further increased, intake is increased.In addition, when the outer end height of front side edge is lower than under hub
When end face, the center of gravity of fan rotatable parts is reduced, is rotated more stable.
In some of them embodiments 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 with the second bigger curved surface of surfaces of revolution angle and increases the wind of outlet air
Speed, so that the flowing of air-flow is more smooth, noise is smaller.In rotation, front side edge need to cut separation air and therefore occur flabellum
The wall thickness such as a possibility that vibration is big, and first surface uses avoid flabellum front end from sending out flabellum front end shakiness since wall thickness is not equal
A possibility that raw vibration or deformation, the second curved surface shakes, is then relatively small, and the thickness of the upper end is gradually reduced, material can be reduced
Expect dosage, in addition, the integral central of fan rotatable parts easily moves down after upper end thickness reduces, increases fan rotation
Stability reduces vibration, reduces noise.
Detailed description of the invention
Fig. 1 is the overlooking 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.
Appended drawing reference:
Outer end A, inner end B, spacing m, central axis X, diameter D1, diameter D2, front end C, angle theta, chord length d, Ye Gao b, leaf width
a；
Fixed part 10, hub 20, lower end surface 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, reinforcement part 6, the first intersection 61, the second intersection 62, even surface 63, flabellum upper surface
7。
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Figure 1 to Fig. 6, 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, rotational installation are circumferential uniformly distributed in the hub 20 of fixed part 10
In multiple flabellums 30 on the cylindrical outer surface of hub 20.Referring to Fig.1 and shown in 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 be higher than front side edge 1 and therebetween pass through lower concave curved surface 5 connect.
Referring to Fig.1 and shown in 3, the outer end A height of front side edge 1 is lower than inner end B height, so that 1 outer end of front side edge dips down
Tiltedly, the length for extending outer side edges 4 increases the wind sweeping area of fan.Referring to shown in Fig. 6, single flabellum 30 is on the surfaces of revolution
Projected area be S3, hub 20 the surfaces of revolution projected area S2, flabellum rotate back wall at 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 wherein the K of the present embodiment is between 86%-96%,
Since fan blade area accounting is big, reduce fan due to flabellum bring eccentricity issues, thus reduce brought due to bias
Vibration.
Specifically, the back side edge 2 of previous flabellum 30 and the front side edge 1 of latter flabellum 30 are between the projection on the surfaces of revolution
Spacing m is 2-8mm, 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
Revolving speed is fanned, to reduce noise.In addition, the eccentricity issues for reducing electric fan 30, shake weaker under same rotational speed, and noise is more
It is small.
Preferably, referring 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 rotation is fanned, face locating for the circle is the surfaces of revolution, each on rotary part due to rotating around same shaft
The spinning face of point is parallel, and the lower end surface 201 of the present embodiment hub 20 is plane and, the lower end surface of optional hub 20 vertical with shaft
201 as with reference to the surfaces of revolution.The present embodiment is the small angle of 15-30 degree by θ, increases the length of outer side edges 4, thus further
Increase wind sweeping area, rotation speed of the fan can be further reduced in identical air output, reduces 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, the utilization rate of air-flow is high, air quantity is big.
Referring to Figure 5, best, the height of the outer end A of front side edge 1 is also less than the height of the lower end surface 201 of the hub 20
Degree, difference in height D=0.5-5mm, preferably 0.5-2mm increase intake to further increase the wind sweeping area of fan.Separately
Outside, when the outer end A height of front side edge 1 is lower than the lower end surface 201 of hub 20, the center of gravity of fan rotatable parts is reduced, rotation is more
Add stabilization, alleviates vibration.
Best, the number of flabellum 30 is odd number, and odd number flabellum 30 can reduce the resonance between flabellum 30, thus
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 vibration of fan is big.And quantity is when being more than 11, flabellum 30
Quantity it is on the high side, the lesser 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, referring to Fig.1 and shown in 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 axis X of hub 20.It is arc-shaped to can guarantee in same space, bigger 30 area of flabellum is obtained, to obtain maximum
Intake.
Preferably, the cylindrical outer surface diameter D2 ratio of the arc-shaped diameter D1 and hub 20 is 2.5-3.5.The ratio
Under, 30 area accounting of flabellum is big, and can get bigger wind sweeping area can further decrease revolving speed in same air output,
Reduce noise.Flabellum 30 is unlikely to excessive again simultaneously, and leads to the vibration aggravation of flabellum 30.
Referring to shown in Fig. 4, when flabellum 30 selects 7, when fan diameter is between 110-125mm, chord length d be may be selected
The high b of difference in height, that is, leaf of 40-50mm, 4 the highest point and the lowest point of outer side edges are selected as 10.3-25mm, 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, is easy to happen
Vibration, to influence air output and muting function.Referring to Fig.1 and shown in 2, it is equipped with and reinforces between the present embodiment flabellum 30 and hub 20
Portion 6 increases the bonding strength between flabellum 30 and hub 20 by reinforcement part 6, to reduce flabellum 30 during the work time
Vibration reduces noise, in addition, reinforcement part 6 also provides stable support to obtain bigger 30 wind sweeping area of flabellum.
Preferably, reinforcement part 6 is formed in the flabellum upper surface 7 towards direction of rotation, the reinforcement part 6 is located at direction of rotation
It is seamlessly transitted between the front end C and flabellum upper surface 7 in front, to reduce reinforcement part 6 in fan rotation process to the resistance of wind,
Intake is improved, noise is reduced.
Referring to shown in Fig. 2, there is the first intersection 61, the circle of reinforcement part 6 and hub 20 between reinforcement part 6 and flabellum upper surface 7
There is the second intersection 62 between outer surface of column, connected between first intersection 61 and the second intersection 62 by an even surface 63.
The present embodiment not only seamlessly transits between the front end C and flabellum upper surface 7 that reinforcement part 6 is located in front of direction of rotation, also passes through
The even surface 63 seamlessly transit each position of connection flabellum upper surface 7 and hub 20 can, make resistance of the reinforcement part 6 to wind
Power is smaller.
In conjunction with shown in Fig. 1, best, first intersection 61 is in the arc outstanding 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 outstanding of outward side 4, greatly reduces first
The windage at 62 both ends of intersection 61 and the second intersection allows the flow to smoothly pass over reinforcement part 6, while the structure does not influence to add again
The reinforcing effect in strong portion 6.Wherein, the both ends of the first intersection 61 can be as close as possible to the upper and lower ends of 30 inner side edge 3 of flabellum, thus to the greatest extent
Amount eliminates the angle connection between flabellum 30 and hub 20, reduces turbulent flow, improves intake.
Referring to Fig.1 and shown in 2, the lower concave curved surface 5 of composition flabellum 30 includes first surface 51 and the second curved surface 52,
First surface 51 is located at the front of the second curved surface 52 on direction of rotation, and the angle of first surface 51 and the surfaces of revolution is 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
The first surface 51 of the small angle of the surfaces of revolution steadily receives air inlet air-flow, recycles and the second bigger curved surface of surfaces of revolution angle
52 increase the wind speed of outlet air, and by the two so that the flowing of air-flow is more smooth, noise is smaller.Flabellum 30 is preceding in rotation
The wall thickness such as a 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 vibration or deformation occur since wall thickness does not wait.A possibility that second curved surface 52 shakes 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 vibration, reduce noise.
When the present embodiment is applied on electromagnetic oven, rotation speed of the fan can be lower than 2000rpm, or even can be down to 1500rpm
It can reach good heat dissipation effect, revolving 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 exist term " center ", " transverse direction ", " thickness ", "upper",
The orientation or positional relationship of the instructions such as "lower", "vertical", "horizontal", "top", "bottom", "inner", "outside", " radial direction ", " circumferential direction " is
It is based on the orientation or positional relationship shown in the drawings, is for the convenience of describing the present invention and simplifying the description, without referring to because being interpreted as
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is limitation of the present invention.
In addition, Wen Zhongru then it is used for description purposes only, and should not be understood as there are term " first ", " second " etc.
Indication or suggestion relative importance or the quantity for implicitly indicating indicated technical characteristic." first ", " are defined as a result,
Two " etc. feature can explicitly or implicitly include one or more of the features.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 shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be directly
It is connected, the connection inside two elements or the interaction of two elements can also be can be indirectly connected through an intermediary
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.
Unless the context clearly dictates otherwise and limit, Wen Zhongru there are fisrt feature in the second feature " on " or " down "
Description, it can be understood as be that the first and second features directly contact or the first and second features pass through intermediary mediate contact.
Moreover, fisrt feature can be above the second feature " above ", " above " and " above " fisrt feature right above second feature or tiltedly
Top, or first feature horizontal height is merely representative of higher than second feature.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
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 are rotatablely installed in the hub of fixed part, are circumferentially distributed in the circle of hub
Multiple flabellums on outer surface of column；Flabellum includes along direction of rotation and after being set to the front side edge in front and being set to rear
Side, 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 logical therebetween
Cross down concave curved surface connection, it is characterised in that: the outer end height of front side edge is lower than inner end height, throwing of all flabellums on the surfaces of revolution
Shadow area and flabellum rotation back wall at ratio of the area between the projected area on the surfaces of revolution be 86-96%.
2. a kind of cooking apparatus quiet fan as described in claim 1, it is characterised in that: the highest point 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 axis 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 surprise
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: be equipped between the flabellum and hub
Reinforcement part.
6. a kind of cooking apparatus quiet fan as claimed in claim 5, it is characterised in that: the reinforcement part is formed in direction
The flabellum upper surface of direction of rotation, the reinforcement part are located at smoothed between the front end and flabellum upper surface in front of direction of rotation
It crosses.
7. a kind of cooking apparatus quiet fan as claimed in claim 5, it is characterised in that: table on the reinforcement part and flabellum
There is the first intersection between face, there is the second intersection, first intersection and second between reinforcement part 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
Side arc outstanding, 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 end surface 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 with
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.
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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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
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| CN108167222A CN108167222A (en) | 2018-06-15 |
| CN108167222B true CN108167222B (en) | 2019-10-22 |
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ID=62525207
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2382867Y (en) * | 1999-07-05 | 2000-06-14 | 江苏华鹏变压器厂 | Low noise fan for transformer |
| US6514036B2 (en) * | 2001-04-27 | 2003-02-04 | Black & Decker Inc. | Radial flow fan with impeller having blade configuration for noise reduction |
| KR20060122549A (en) * | 2005-05-27 | 2006-11-30 | 삼성전자주식회사 | Blowing fan |
| JP2008267176A (en) * | 2007-04-17 | 2008-11-06 | Sony Corp | Axial flow fan device, housing, and electronic equipment |
| US20090148294A1 (en) * | 2007-12-10 | 2009-06-11 | Minebea Co., Ltd. | Houseless fan with rotating tip ring as silencer |
| CN103835992B (en) * | 2014-02-24 | 2016-06-22 | 广东美的厨房电器制造有限公司 | Diffusion bleed type flabellum and blade rack |
| CN104806538B (en) * | 2015-04-02 | 2017-11-28 | 佛山市南海九洲普惠风机有限公司 | A kind of axial-flow type smoke exhaust fan |
| CN205154746U (en) * | 2015-10-22 | 2016-04-13 | 艾美特电器（深圳）有限公司 | Silent fan |
| CN114810661A (en) * | 2015-12-11 | 2022-07-29 | 台达电子工业股份有限公司 | Impeller and fan |
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2017
- 2017-12-06 CN CN201711272060.9A patent/CN108167222B/en active Active
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