CN207961058U - Fan and micro-wave oven - Google Patents
Fan and micro-wave oven Download PDFInfo
- Publication number
- CN207961058U CN207961058U CN201721928685.1U CN201721928685U CN207961058U CN 207961058 U CN207961058 U CN 207961058U CN 201721928685 U CN201721928685 U CN 201721928685U CN 207961058 U CN207961058 U CN 207961058U
- Authority
- CN
- China
- Prior art keywords
- fin
- fan
- area
- blade
- blade root
- 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.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of fan and micro-wave ovens, the fan includes wheel hub (21) and along the circumferentially spaced multiple blades (22) in the outer ring of the wheel hub (21), the suction surface (221) of the blade (22) is equipped with the radial parallel a plurality of fin (23) being intervally arranged along the wheel hub (21), and the fin (23) complies with airflow direction radially extending along the wheel hub (21).Compared to the fan of existing smooth surface blade, the fan of the utility model in the suction surface of blade due to having additional a plurality of fin complied on airflow direction, to restrained effectively blade surface flow separation, reduce energy loss, improve the heat dissipation performance of fan；Weaken the vortex system intensity that flow separation generates, reduces the turbulence noise of fan, improve the satisfaction of user.
Description
Technical field
The utility model is related to household appliance technical fields, and in particular, to a kind of fan and micro-wave oven.
Background technology
Currently, micro-wave oven has been widely used in people’s lives as the apparatus of heating food.Microwave is a kind of electromagnetism
Wave, micro-wave oven are made of power supply, magnetron, the part such as control circuit and cooking cavity.Microwave oven internal mainly utilizes axis stream wind
Fan component radiates to the components such as transformer or frequency converter and magnetron.Axial fan assembly mainly include flabellum, collecting cover,
Blower tray and motor.With high voltage, big flow large fan compared with, small axial flow fan is more focused on small impeller
Size generates sufficiently large flow, pressure, to adapt to the demand of heat dissipation.In addition, the master that small axial flow fan is also micro-wave oven makes an uproar
Sound source.Air quantity can be improved by improving motor speed, improves heat dissipation, but can make the noise bigger of fan, Er Qiezhuan simultaneously
The service life of fast higher fan or fan electromotor is also shorter, while reliability, safety decline.Therefore, a height is designed
Effect, big flow, low noise fan be with a wide range of applications.
In existing fan, since the blade of fan is usually the smooth blade in surface, air-flow is in the root for flowing through blade
Different degrees of flow separation can occur when portion, blade tip and trailing edge region, cause energy loss, performance to decline, segregation phenomenon
Fan can be made to enter rotating stall in advance when serious, seriously affect heat dissipation effect.In addition, the leading edge separation that flow separation generates
The vortex systems such as whirlpool, trailing edge Shedding Vortex blend in runner and aggravate the complexity of flowing so that the noise of fan can also be substantially improved.
Utility model content
The purpose of this utility model is to provide the fan that a kind of air quantity is big, noise is small.
To achieve the goals above, the utility model provides a kind of fan, including wheel hub and along the outer ring of wheel hub week
To spaced apart multiple blades, the suction surface of the blade be equipped with along the wheel hub it is radial parallel be intervally arranged it is a plurality of
Fin, the fin comply with airflow direction radially extending along the wheel hub.
Preferably, the fin is parallel to the leaf top edge of the blade and extends to trailing edge from blade inlet edge.
Preferably, the suction surface include the blade root fin area being sequentially distributed from the blade root of the blade to the directions Ye Ding,
Middle part fin area and Ye Ding fins area, the fin include be arranged blade root fin area blade root fin, be arranged described
The middle part fin in middle part fin area and leaf top fin in Ye Ding fins area is set, blade root fin area and leaf top are convex
The fin distribution density in rib area is all higher than the fin distribution density in middle part fin area.
Preferably, the blade root fin is identical with the outer profile of leaf top fin and overall size is respectively less than the middle part
The overall size of fin.
Preferably, the radius of the leaf top edge of the blade is R, and in blade root fin area, the blade root fin is most
Minor radius is r1 and maximum radius is r2, in Ye Ding fins area, the least radius of leaf top fin be r3 and maximum half
Diameter is r4, and the outer diameter of the wheel hub is r, is met：
Preferably, the cross section of the fin is isosceles triangle.
Preferably, in blade root fin area and Ye Ding fins area, the base width of the cross section of the fin is a1, phase
Spacing between the adjacent fin is b1, and the height of projection of the fin is h1, is met：
Preferably, in middle part fin area, the base width of the cross section of the middle part fin is a2, it is adjacent it is described in
Spacing between portion's fin is b2, and the height of projection of the middle part fin is h2, is met：
Preferably, between being between the blade root fin, between the middle part fin and between the fin of the leaf top etc.
Every distribution.
In addition, the utility model additionally provides a kind of micro-wave oven, the micro-wave oven includes fan described above.
Through the above technical solutions, compared to the fan of existing smooth surface blade, the fan of the utility model, due to
The a plurality of fin complied on airflow direction is had additional in the suction surface of blade, to restrained effectively blade surface flowing
Separation reduces energy loss, improves the heat dissipation performance of fan；Weaken the vortex system intensity that flow separation generates, reduces the rapids of fan
Flow noise improves the satisfaction of user.
Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is to be used to provide a further understanding of the present invention, an and part for constitution instruction, and following
Specific implementation mode be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings：
Fig. 1 is the stereogram of the fan of the prior art；
Fig. 2 is the stereogram according to the fan of specific embodiment of the present utility model；
The vertical view that the part-structure that Fig. 3 is Fig. 2 is shown；
Fig. 4 illustrates the correlativity of the parameters of fin；
Fig. 5 is the internal structure schematic diagram according to the micro-wave oven of specific embodiment of the present utility model；
Fig. 6 is the explosive view of fan component.
Reference sign
1 cavity, 2 fan component
3 bottom plate, 4 transformer
5 power cord bifurcated, 6 back plate
7 magnetrons
20 fan, 21 wheel hub
22 blade, 23 fin
24 collecting cover, 25 holder
26 motors
221 suction surface, 222 pressure face
224 blade inlet edge, 225 trailing edge
220 leaf top edge, 233 blade root fin
231 leaf top fin, 232 middle part fin
The base width of the cross section of a fins
Spacing between the adjacent fins of b
The height of projection of h fins
Specific implementation mode
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific implementation mode is only used for describing and explaining the present invention, and is not intended to limit the utility model.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually
Be for direction shown in the drawings either for it is vertical, vertically or on gravity direction for each component mutual alignment
Relationship description word.
In the conventional fan with smooth blades as shown in Figure 1, blade 22 in high-speed rotation process, blade 22
The part such as root, blade tip, trailing edge a degree of flow separation phenomenon can occur, for example, import incoming and blade root leading edge
Collision forms horse shoe vortex, and leakage vortex is will produce between leaf top and collecting cover, will produce tip vortex etc. at blade tip.For asking above
Topic, the utility model provide a kind of novel fan, as shown in Fig. 2, the fan 20 is including wheel hub 21 and along the outer of wheel hub 21
Enclose circumferentially spaced multiple blades 22, blade 22 includes suction surface 221 and pressure face 222, on the suction surface 221 of blade 22
Equipped with the radial parallel a plurality of fin 23 being intervally arranged along wheel hub 21, fin 23 complies with radial direction of the airflow direction along wheel hub 21
Extend.
Compared to the fan of existing smooth surface blade 22 as shown in Figure 1, the fan 20 of the utility model due to
The suction surface 221 of blade 22 has additional a plurality of fin 23 complied on airflow direction, to restrained effectively the table of blade 22
The flow separation in face reduces energy loss, improves the heat dissipation performance of fan 20；Weaken the vortex system intensity that flow separation generates, drop
The turbulence noise of low fan 20 improves the satisfaction of user.
As shown in Figures 2 and 3, fin 23 is parallel to the leaf top edge 220 of blade 22 and extends to leaf from blade inlet edge 224
Piece rear 225.So that each corner on the suction surface 221 of blade 22 is all laid with fin 23.
Suction surface 221 includes the blade root fin area being sequentially distributed from the blade root of blade 22 to the directions Ye Ding, middle part fin area
With Ye Ding fins area, fin 23 include be arranged blade root fin area blade root fin 233, that middle part in middle part fin area is arranged is convex
Rib 232 and leaf top fin 231 in Ye Ding fins area is set, the fin distribution density in blade root fin area and Ye Ding fins area is equal
More than the fin distribution density in intermediate fin area.Fin 23 i.e. on suction surface 221 is distributed as 3 areas, and main purpose is separation
The horse shoe vortex of blade root, the leakage vortex on leaf top, therefore the fin distribution density in blade root fin area and Ye Ding fins area is all higher than middle part
The fin distribution density in fin area.
At the same time, blade root fin 233 is identical with the outer profile of leaf top fin 231 and overall size is respectively less than middle part fin
232 overall size, to further inhibit the flow separation phenomenon of the horse shoe vortex of blade root, the leakage vortex on leaf top.
Wherein, as shown in figure 3, the radius of the leaf top edge of blade 22 is R, in blade root fin area, blade root fin 233 is most
Minor radius is r1 and maximum radius is r2, and the least radius in Ye Ding fins area, leaf top fin 231 is r3 and maximum radius is
The outer diameter of r4, wheel hub 21 are r, are met：
By the restriction of above-mentioned formula (1), to advanced optimize each blade root fin area, middle part fin area and Ye Ding
The area distributions of the corresponding fin in fin area 23.
Wherein, the cross section of fin 23 is both preferably isosceles triangle.That is the fin 23 of the fan 20 of the utility model is
Triangle fin.
Further, with reference to shown in Fig. 4, wherein a is the base width of the cross section of fin, and b is between adjacent fin
Spacing, h are the height of projection of fin.
In blade root fin area and Ye Ding fins area, the base width of the cross section of fin 23 is a1, between adjacent fin 23
Spacing be b1, the height of projection of fin 23 is h1, is met：
Above-mentioned formula (2) is used to limit the preferred size of the triangle fin in blade root fin area and Ye Ding fins area.
Meanwhile in middle part fin area, the base width of the cross section of middle part fin 232 is a2, adjacent middle part fin 232 it
Between spacing be b2, the height of projection of middle part fin 232 is h2, is met：
Above-mentioned formula (3) is used to limit the size of the triangle fin in middle part fin area.
The phenomenon that inhibition flow separation to make the fan 20, is more preferable and obtained wind is more soft, blade root fin
Between 233, between middle part fin 232 and leaf top fin 231 be to be spacedly distributed.In addition, being uniformly distributed at equal intervals
The overall appearance of fan 20 can also be made more aesthetically pleasing.
In addition, the utility model additionally provides a kind of micro-wave oven, as shown in figure 4, micro-wave oven is equipped with fan described above
20.Therefore the micro-wave oven also contains all advantages of the fan 20 of the utility model, no longer repeats one by one.
The micro-wave oven includes bottom plate 3, back plate 6, magnetron 7, transformer 4 or frequency converter, microwave oven heating cavity body 1, power supply
Line bifurcated 5, high-voltage diode and fan component 2.As shown in figure 5, fan component 2 includes fan 20, collecting cover 24, holder 25
With motor 26.Usual transformer 4 or frequency converter are used to power to magnetron 7, and magnetron 7 generates microwave to the food in cavity 1
It is heated, fan component 2 radiates to magnetron 7 and transformer 4 or frequency converter.Wherein, cavity 1 and transformer 4 or change
Frequency device is fixed on bottom plate 3, and magnetron 7 is fixed on cavity 1, and holder 25 is fixed by screws in back plate 6, and motor 26 is fixed
On the holder 25, the shaft of motor 26 passes through the shaft mounting portion of fan 20.
When experiment, using the utility model such as fan 20 of Fig. 2 and the existing conventional Ian such as Fig. 1 carry out sound work(respectively
Rate grade is tested, and the fan 20 of the utility model all plays apparent improve to the heat dissipation effect and noise reduction of micro-wave oven and makees
With.Table 1 gives the data that microwave oven internal critical piece temperature rises test.
Table 1
Table 2 gives the test data of 20 acoustic power level of fan of existing fan and the utility model under different voltages.From
In table 2 as can be seen that the utility model fan 20 acoustical behavior it is more excellent, compared to existing fan under different voltages sound
The power stage range of decrease is in 2dB or so.
Table 2
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail above in association with attached drawing
Detail in the above embodiment can be to the skill of the utility model in the range of the technology design of the utility model
Art scheme carries out a variety of simple variants, these simple variants belong to the scope of protection of the utility model.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the utility model is to each
The possible combination of kind no longer separately illustrates.
In addition, arbitrary combination can also be carried out between a variety of different embodiments of the utility model, as long as it is not disobeyed
The thought for carrying on the back the utility model, equally should be considered as content disclosed in the utility model.
Claims (10)
1. a kind of fan, including wheel hub (21) and along the circumferentially spaced multiple blades (22) in the outer ring of the wheel hub (21),
It is intervally arranged along the radial parallel of the wheel hub (21) it is characterized in that, the suction surface (221) of the blade (22) is equipped with
A plurality of fin (23), the fin (23) comply with airflow direction radially extending along the wheel hub (21).
2. fan according to claim 1, which is characterized in that the fin (23) is parallel to the leaf top of the blade (22)
Along (220) and extend to trailing edge (225) from blade inlet edge (224).
3. fan according to claim 1, which is characterized in that the suction surface (221) includes from the blade (22)
Blade root fin area, middle part fin area and the Ye Ding fins area that blade root is sequentially distributed to the directions Ye Ding, the fin (23) include setting
Set blade root fin area blade root fin (233), be arranged middle part fin area middle part fin (232) and setting
The fin distribution density in the leaf top fin (231) in Ye Ding fins area, blade root fin area and Ye Ding fins area is big
Fin distribution density in middle part fin area.
4. fan according to claim 3, which is characterized in that the blade root fin (233) and leaf top fin (231)
Outer profile is identical and overall size is respectively less than the overall size of the middle part fin (232).
5. fan according to claim 4, which is characterized in that the radius of the leaf top edge of the blade (22) is R, described
In blade root fin area, the least radius of the blade root fin (233) is r1 and maximum radius is r2, in Ye Ding fins area,
The least radius of leaf top fin (231) is r3 and maximum radius is r4, and the outer diameter of the wheel hub (21) is r, is met：
6. fan according to claim 5, which is characterized in that the cross section of the fin (23) is isosceles triangle.
7. fan according to claim 6, which is characterized in that described convex in blade root fin area and Ye Ding fins area
The base width of the cross section of rib (23) is a1, and the spacing between the adjacent fin (23) is b1, the fin (23) it is convex
It is h1 to play height, is met：
8. fan according to claim 6, which is characterized in that in middle part fin area, the middle part fin (232)
The base width of cross section is a2, and the spacing between the adjacent middle part fin (232) is b2, the middle part fin (232)
Height of projection is h2, is met：
9. fan according to claim 3, which is characterized in that between the blade root fin (233), the middle part fin
(232) it is to be spacedly distributed between and leaf top fin (231).
10. a kind of micro-wave oven, which is characterized in that the micro-wave oven includes according to fan as described in any one of claim 1 to 9
(20)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721928685.1U CN207961058U (en) | 2017-12-30 | 2017-12-30 | Fan and micro-wave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721928685.1U CN207961058U (en) | 2017-12-30 | 2017-12-30 | Fan and micro-wave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207961058U true CN207961058U (en) | 2018-10-12 |
Family
ID=63731852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721928685.1U Active CN207961058U (en) | 2017-12-30 | 2017-12-30 | Fan and micro-wave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207961058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109918A (en) * | 2021-11-26 | 2022-03-01 | 中国民航大学 | Compressor stator blade cascade with small oblique ribs on suction surface |
-
2017
- 2017-12-30 CN CN201721928685.1U patent/CN207961058U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109918A (en) * | 2021-11-26 | 2022-03-01 | 中国民航大学 | Compressor stator blade cascade with small oblique ribs on suction surface |
| CN114109918B (en) * | 2021-11-26 | 2024-01-23 | 中国民航大学 | Compressor stator blade grid with small inclined ribs on suction surface |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104214139A (en) | Fan | |
| CN208831287U (en) | Fan and micro-wave oven | |
| CN207961059U (en) | Fan and micro-wave oven | |
| CN108087333A (en) | Axial-flow windwheel and air conditioner | |
| CN206145734U (en) | Adopt radiating electromagnetism stove of novel turbine | |
| CN207961058U (en) | Fan and micro-wave oven | |
| CN208025573U (en) | Micro-wave oven | |
| CN109062380A (en) | A kind of big data server heat sink | |
| CN207961050U (en) | Fan and micro-wave oven | |
| CN107956716A (en) | A kind of electric fan flabellum | |
| CN207961055U (en) | Fan and micro-wave oven | |
| CN108180169A (en) | Fan and micro-wave oven | |
| CN207961053U (en) | Fan and micro-wave oven | |
| CN207420962U (en) | A kind of aerofoil fan and air-conditioner outdoor unit for air-conditioner outdoor unit | |
| CN103835992B (en) | Diffusion bleed type flabellum and blade rack | |
| CN208831320U (en) | Fan and micro-wave oven | |
| CN208203610U (en) | Fan and micro-wave oven | |
| JP2013113246A (en) | Electric fan | |
| CN106594815B (en) | Micro-wave oven | |
| CN207960997U (en) | Fan and micro-wave oven | |
| CN207960998U (en) | Fan and micro-wave oven | |
| CN205937237U (en) | High -efficient radiator unit and high -efficient heat dissipation cooking utensil | |
| CN208831286U (en) | Fan and micro-wave oven | |
| CN207961060U (en) | Fan and micro-wave oven | |
| CN208907406U (en) | Fan and micro-wave oven |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |