CN207962751U - Micro-wave oven - Google Patents
Micro-wave oven Download PDFInfo
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- CN207962751U CN207962751U CN201721929221.2U CN201721929221U CN207962751U CN 207962751 U CN207962751 U CN 207962751U CN 201721929221 U CN201721929221 U CN 201721929221U CN 207962751 U CN207962751 U CN 207962751U
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- wheel hub
- cooling fan
- micro
- wave oven
- magnetron
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Abstract
The utility model discloses a kind of micro-wave ovens, including wheel hub cooling fan (2) and it is axially spaced that the magnetron (7) and transformer (4) or frequency converter in the lower air port of wheel hub cooling fan is arranged, the outlet air end hub portion of wheel hub cooling fan is formed as flared, molded line (211) extends to the bottom end of magnetron on the flaring wheel hub of outlet air end hub portion, and the flaring wheel hub lower profile (212) of outlet air end hub portion extends to the top of transformer or frequency converter.In the micro-wave oven of the utility model, pass through the position relationship between reasonable Arrangement wheel hub cooling fan and magnetron and transformer or frequency converter so that the heat dissipation air quantity that wheel hub cooling fan obtains when working can be all utilized, and can not cause to waste again.In other words, the axial distance also to have furthered between cooling magnetron and transformer or frequency converter so that the internal structure of the micro-wave oven is more compact, in addition, the heat dissipation effect of the fan of the micro-wave oven is more preferable, improves the user satisfaction of product.
Description
Technical field
The utility model is related to household appliance technical fields, and in particular, to a kind of micro-wave oven.
Background technology
With the significantly promotion of living standard, people are also higher and higher for the demand of household electrical appliance.Currently, micro-wave oven
As the kitchen utensils of heating food, it has been widely used in people’s lives, use of microwave ovens performance, miniaturization are set
Meter requires to be become by the epoch and micro-wave oven noise problem has increasingly attracted attention, and directly affects the experience of user
Degree.
In existing micro-wave oven, magnetron heats the food in cavity for generating microwave.Transformer (or become
Frequency device) it is that magnetron is powered.Microwave oven internal mainly utilizes axial-flow cooling fan to the portions such as transformer or frequency converter and magnetron
Part radiates.Axial-flow cooling fan includes mainly fan (blade and wheel hub etc.), collecting cover, holder and motor etc..
As micro-wave oven miniaturization, the requirement of portable characteristics are higher and higher, magnetron and transformer (or frequency converter) etc. are big
The arrangement of power fever electricity piece is increasingly concentrated, and temperature is excessively high to be easy to burn out magnetron and transformer (or frequency converter), is caused
Micro-wave oven is stopped, or even generates even more serious consequence, therefore fan cooling efficiency is badly in need of being promoted.Therefore, in micro-wave oven
Limited space in, by the wind that fan is produced by boasting be sufficiently used for fever electricity piece heat dissipation be the key that improve radiating efficiency.
Utility model content
The purpose of this utility model is to provide a kind of compact-sized, good heat dissipation effect micro-wave oven.
To achieve the goals above, the utility model provides a kind of micro-wave oven, including between wheel hub cooling fan and axial direction
Every ground, the magnetron and transformer or frequency converter in the lower air port of the wheel hub cooling fan are set, the wheel hub cooling fan
Outlet air end hub portion is formed as flared, and molded line extends to the magnetron on the flaring wheel hub of the outlet air end hub portion
Bottom end, the flaring wheel hub lower profile of the outlet air end hub portion extends to the top of the transformer or frequency converter.
Preferably, the air intake hub portion of the wheel hub cooling fan is formed as taper reducing diameter part.
Preferably, the cone cylinder shape that the wheel hub of the wheel hub cooling fan is formed as one.
Preferably, the hub-shaped of the wheel hub cooling fan becomes bowl-type.
Preferably, the air outlet diameter of the wheel hub of the wheel hub cooling fan is not less than 1.5 with air inlet diameter ratio.
Preferably, ranging from the 2 of the air outlet diameter of the wheel hub of the wheel hub cooling fan and air inlet diameter ratio~
2.5。
Preferably, the axial spacing of the magnetron and the outlet air end hub portion is more than the blade profile section of blade most
Big chord length c；And/or the transformer or frequency converter are more than the leaf of the blade with the axial spacing of the outlet air end hub portion
The maximum chord length c in type section.
Preferably, the radius of the blade of the wheel hub cooling fan is R, and the radius of the wheel hub is r, the magnetron with
Radial spacing between the transformer or frequency converter is not more than 0.2* (R-r).
Preferably, the radial consistency from top to bottom of the magnetron and the transformer or frequency converter along the wheel hub.
Preferably, the wheel hub cooling fan further includes being arranged circumferentially spaced multiple along the outer ring of the wheel hub
Blade, and the outer weekly interval of the blade is covered with cylindric collecting cover.
In the micro-wave oven of the utility model, pass through reasonable Arrangement wheel hub cooling fan and magnetron and transformer or frequency conversion
Position relationship between device so that when wheel hub cooling fan works, fan rolls up inspiratory flow and after the blowout of wheel hub outlet air end
Obtained heat dissipation air quantity can be completely used for cooling magnetron and transformer or frequency converter, can not cause the waste of heat dissipation air quantity again,
And it can almost accomplish original air quantity waste region being reduced to zero.In other words, also furthered cooling magnetron and transformer
Or the axial distance between frequency converter so that the internal structure of the micro-wave oven is more compact.In addition, the micro-wave oven of the utility model
Wheel hub cooling fan use the wheel hub with outlet air end gradually expanded form, air intake with respect to the wheel hub of outlet air end diameter smaller,
Therefore the wheel hub cooling fan is more advantageous to roll and suck more air quantity so that the heat dissipation air quantity bigger of fan, further
Ground 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 internal structure schematic diagram according to the micro-wave oven of specific embodiment of the present utility model；
Fig. 2 displayings are the installation site relationship of fan and magnetron and transformer or frequency converter in existing micro-wave oven；
Fig. 3 be according to the wheel hub cooling fan of the microwave oven internal of specific embodiment of the present utility model and magnetron and
The installation site relationship of transformer or frequency converter；
Fig. 4 illustrates the dimensional parameters of the wheel hub cooling fan in Fig. 3；
Fig. 5 is the explosive view of wheel hub cooling fan.
Reference sign
1 cavity, 2 fan
3 bottom plate, 4 transformer
5 power cord bifurcated, 6 back plate
7 magnetron, 21 wheel hub
22 blade, 24 collecting cover
25 holder, 26 motor
Molded line 212 is flared wheel hub lower profile on 211 flaring wheel hubs
D1 air inlet diameter D2 air outlet diameters
U gas flow directions
A air quantity wastes region
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.
If Fig. 1 illustrates the inner mounting structure of each component of micro-wave oven, the micro-wave oven include bottom plate 3, back plate 6,
Magnetron 7, transformer 4 or frequency converter, microwave oven heating cavity body 1, power cord bifurcated 5, high-voltage diode and fan 2.Usually become
Depressor 4 or frequency converter are used to power to magnetron 7, and magnetron 7 generates microwave and heated to the food in cavity 1, and fan 2 is right
Magnetron 7 and transformer 4 or frequency converter radiate.Wherein, cavity 1 and transformer 4 or frequency converter are fixed on bottom plate 3, magnetic
Keyholed back plate 7 is fixed on cavity 1, and microwave oven internal mainly utilizes axial-flow cooling fan to transformer 4 (or frequency converter) and magnetron 7
Equal major heat producing components radiate.
In as shown in Figure 2 a kind of existing conventional wheel hub cooling fan, transformer 4 (or frequency converter) and magnetron 7
Relative position relation in, due to the tubular wheel hub of the 21 generally-straight type molded line of wheel hub of fan, and for ensure product it is normal
Operating, the distance being arranged between common wheel hub cooling fan, transformer 4 (or frequency converter) and magnetron 7 are larger.When the wheel
When hub cooling fan rotary work, turbine drives gas flowing, along gas flow direction u, when radiating airflow flows through lower air port
When needing the component to radiate, there are certain air quantity to waste region A so that the radiating efficiency of fan is not high, and there are microwaves
The phenomenon that furnace interior space waste, and also it is unsatisfactory for the demand of product miniaturization.
In this regard, the utility model provides a kind of novel compact microwave oven, shown in Fig. 1 and Fig. 3, the micro-wave oven
Including wheel hub cooling fan 2 and it is axially spaced that the magnetron 7 and transformer 4 in the lower air port of wheel hub cooling fan 2 is arranged
Or frequency converter, the outlet air end hub portion of wheel hub cooling fan 2 are formed as flared, on the flaring wheel hub of outlet air end hub portion
Molded line 211 extends to the bottom end of magnetron 7, and the flaring wheel hub lower profile 212 of outlet air end hub portion extends to transformer 4 or becomes
The top of frequency device.
As it can be seen that in the micro-wave oven of the utility model, pass through reasonable Arrangement wheel hub cooling fan 2 and magnetron 7 and transformation
Position relationship between device 4 or frequency converter so that when wheel hub cooling fan 2 works, fan rolls up inspiratory flow and from wheel hub outlet air
Obtained heat dissipation air quantity after the blowout of end can be completely used for cooling magnetron 7 and transformer 4 or frequency converter, can not cause to dissipate again
The waste of hot blast rate, and can almost accomplish original air quantity waste region A being reduced to zero.In other words, also furthered cooling
Axial distance between magnetron 7 and transformer 4 (or frequency converter) so that the internal structure of the micro-wave oven is more compact.In addition,
The wheel hub cooling fan 2 of the micro-wave oven of the utility model uses the wheel hub 21 with outlet air end gradually expanded form, and air intake goes out relatively
The diameter smaller of the wheel hub 21 at wind end, therefore be more advantageous to the wheel hub cooling fan 2 and roll and suck more air quantity so that wind
The heat dissipation air quantity bigger of fan, further increases the satisfaction of user.
As shown in Figure 3 and Figure 4, the air intake hub portion of wheel hub cooling fan 2 is preferably formed to taper reducing diameter part, from
And it is in gradually expanded form cone cylinder structure to make the wheel hub 21 of entire wheel hub cooling fan 2 be along gas flow direction u, so that wheel hub
21 volume inhales surface area bigger, and the volume for being conducive to be promoted air quantity inhales effect
Preferably, the cone cylinder shape that the wheel hub 21 of wheel hub cooling fan 2 is formed as one, it is easy to process manufacture, reduce at
This.
Further, as shown in Figure 3 and Figure 4, specifically, the wheel hub 21 of wheel hub cooling fan 2 is formed as bowl-type.
To ensure the heat dissipation air quantity bigger of wheel hub cooling fan 2, the air outlet diameter D2 of the wheel hub 21 of wheel hub cooling fan 2
It is not less than 1.5 with the ratio between air inlet diameter D1.
Further, the model of the ratio between air outlet diameter D2 of the wheel hub 21 of wheel hub cooling fan 2 and air inlet diameter D1
Enclose preferably 2~2.5.
In such as Fig. 3, the axial spacing of magnetron 7 and outlet air end hub portion is more than the maximum in the blade profile section of blade 22
Chord length c；And/or transformer 4 or the axial spacing of frequency converter and outlet air end hub portion are more than the maximum in the blade profile section of blade
Chord length c, it is ensured that wheel hub cooling fan 2 and the shortest distance of the radiating piece in lower air port are existing with the interference for preventing tail resonance
As.It should be noted that for axial spacing referred to herein is both with respect to the axial direction of wheel hub 21, you can for gas in figure
Direction shown in the u of body flow direction；The maximum chord length c in the blade profile section of blade 22 is usually the chord length of leaf top edge；In addition blade
Blade profile section refers to the cross section for the arbitrary a piece of blade 22 that the concentric circles for wheel hub 21 intercepts.
Further, magnetron 7 can consistency from top to bottom along the radial direction of wheel hub 21 with transformer 4 or frequency converter.
Magnetron 7, transformer 4 or frequency converter and wheel hub cooling fan 2 in the radial direction, wheel hub cooling fan 2
The radius of blade 22 is R, and the radius of wheel hub 21 is r, and the radial spacing between magnetron 7 and transformer 4 or frequency converter is not more than
0.2* (R-r), wherein (R-r) it can be appreciated that the leaf of blade 22 is high, prevents mutual heat radiation from interfering, and may insure space
Make full use of.
In general, as shown in figure 5, wheel hub cooling fan 2 further includes being arranged circumferentially spaced along the outer ring of wheel hub 21
Multiple blades 22, and the outer weekly interval of blade 22 is covered with cylindric collecting cover 24, collecting cover 24 has drainage, can collect
The heat dissipation air quantity of wheel hub cooling fan 2 is blown on the components such as the magnetron 7 in lower air port, transformer 4 (or frequency converter) middlely.
In addition, wheel hub cooling fan 2 further includes holder 25 and motor 26, holder 25 is fixed by screws in back plate 6, electricity
Machine 26 is fixed on the holder 25, and the shaft of motor 26 passes through the shaft mounting portion of wheel hub 21.
When experiment, table 1 shows the temperature rise test result for improving each electricity piece in front and back micro-wave oven.It can be with from table 1
Find out, the micro-wave oven of the utility model is by adjusting the position between magnetron 7, transformer 4 or frequency converter and wheel hub cooling fan 2
Set relationship and using the cooling fan of cone hub after, in micro-wave oven magnetron 7 and transformer 4 or frequency converter into the hand-manipulating of needle
It radiates to property, while also enhancing the heat-sinking capability to piece electrical part in micro-wave oven.
1 main heat sink electricity piece temperature of table rises test result
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 micro-wave oven, including wheel hub cooling fan (2) and it is axially spaced to be arranged in the wheel hub cooling fan (2)
The magnetron (7) and transformer (4) or frequency converter in lower air port, which is characterized in that the outlet air end wheel of the wheel hub cooling fan (2)
Hub portion is formed as flared, and molded line (211) extends to the magnetron (7) on the flaring wheel hub of the outlet air end hub portion
Bottom end, the flaring wheel hub lower profile (212) of the outlet air end hub portion extends to the top of the transformer (4) or frequency converter
End.
2. micro-wave oven according to claim 1, which is characterized in that the air intake hub portion of the wheel hub cooling fan (2)
Divide and is formed as taper reducing diameter part.
3. micro-wave oven according to claim 2, which is characterized in that wheel hub (21) formation of the wheel hub cooling fan (2)
The cone cylinder shape being integrated.
4. micro-wave oven according to claim 2, which is characterized in that wheel hub (21) formation of the wheel hub cooling fan (2)
For bowl-type.
5. micro-wave oven according to claim 2, which is characterized in that wheel hub (21) of the wheel hub cooling fan (2) go out
The ratio between tuyere diameter (D2) and air inlet diameter (D1) are not less than 1.5.
6. micro-wave oven according to claim 5, which is characterized in that wheel hub (21) of the wheel hub cooling fan (2) go out
Ranging from the 2~2.5 of the ratio between tuyere diameter (D2) and air inlet diameter (D1).
7. micro-wave oven according to claim 1, which is characterized in that the magnetron (7) and the outlet air end hub portion
Axial spacing be more than blade (22) blade profile section maximum chord length c；And/or the transformer (4) or frequency converter with it is described
The axial spacing of outlet air end hub portion is more than the maximum chord length c in the blade profile section of the blade.
8. micro-wave oven according to claim 7, which is characterized in that the magnetron (7) and the transformer (4) or frequency conversion
Radial consistency from top to bottom of the device along the wheel hub (21).
9. micro-wave oven according to claim 1, which is characterized in that the half of the blade (22) of the wheel hub cooling fan (2)
Diameter is R, and the radius of the wheel hub (21) is r, between the radial direction between the magnetron (7) and the transformer (4) or frequency converter
Away from no more than 0.2* (R-r).
10. micro-wave oven according to claim 1, which is characterized in that the wheel hub cooling fan (2) further includes being arranged on edge
The circumferentially spaced multiple blades (22) in outer ring of the wheel hub (21), and the outer weekly interval of the blade (22) is covered with circle
The collecting cover (24) of tubular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721929221.2U CN207962751U (en) | 2017-12-30 | 2017-12-30 | Micro-wave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721929221.2U CN207962751U (en) | 2017-12-30 | 2017-12-30 | Micro-wave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207962751U true CN207962751U (en) | 2018-10-12 |
Family
ID=63731752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721929221.2U Active CN207962751U (en) | 2017-12-30 | 2017-12-30 | Micro-wave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207962751U (en) |
-
2017
- 2017-12-30 CN CN201721929221.2U patent/CN207962751U/en active Active
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| GR01 | Patent grant |