CN108477972A - Micro-wave oven rice cooker based on microwave Meta Materials - Google Patents
Micro-wave oven rice cooker based on microwave Meta Materials Download PDFInfo
- Publication number
- CN108477972A CN108477972A CN201810320309.7A CN201810320309A CN108477972A CN 108477972 A CN108477972 A CN 108477972A CN 201810320309 A CN201810320309 A CN 201810320309A CN 108477972 A CN108477972 A CN 108477972A
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- China
- Prior art keywords
- micro
- rice cooker
- microwave
- wave oven
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/004—Cooking-vessels with integral electrical heating means
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/24—Warming devices
- A47J36/2483—Warming devices with electrical heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/02—Stoves or ranges heated by electric energy using microwaves
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/76—Prevention of microwave leakage, e.g. door sealings
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cookers (AREA)
Abstract
It is uneven limited with heat penetration mainly to solve the problems, such as that existing micro-wave oven directly heats food for the micro-wave oven rice cooker based on Meta Materials that the present invention provides a kind of.It includes the container (1) and lid (2) of nonmetal medium, the inner wall of container (1), the fire-resistant nontoxic stable metal material face (12) that one layer of fusing point is more than 500 DEG C is coated with below interior bottom and lid (2), the outer wall of container (1), outer bottom and lid (2) applied atop have the dry split-ring resonator of period equally distributed promise (14), and the resonant frequency of each resonant ring is 2.45GHz.Metal covering constitutes absorbing meta-material structure with dielectric layer, split ring resonator layer, which absorbs microwave energy, and is translated into thermal energy, and each resonant ring in split ring resonator layer is a heat source, then passes through metal faced heating food (11).The present invention has homogeneous heating, and the advantages of not will produce electric arc, can be used for cooking.
Description
Technical field
The invention belongs to microwave heating technique fields, and in particular to a kind of micro-wave oven rice cooker, the electricity that micro-wave oven is discharged
Magnetic energy is converted into thermal energy, can be used for food heating.
Background technology
With the continuous improvement of people's living standards, people have gradually broken away to the demand of amount of substance and have switched to chasing after for confrontation
It asks, and one piece that diet is exactly valued in people's daily life the most.Rice is as the leading role in the diet of Chinese
One of, how by good and fast cooked of rice, always come the problem of exploration since being China's thousands of years.
The present higher means of cooking of popularization degree have electric cooker boiling and micro-wave oven to directly heat.Micro-wave oven rice cooker is
Container for microwave stove heat rice.Common micro-wave oven rice cooker is generally nonmetallic by plastics, ceramics and glass etc. on the market
Material makes, and the microwave that micro-wave oven generates can heat food directly through nonmetallic materials.Due to microwave penetration
Thickness is limited, so the rice quantity of a common performance of micro-wave oven rice cooker heating is therefore limited, can only often be heated
The rice of two to three person-portions, and heat rice using common micro-wave oven rice cooker, can cause rice heating uneven, and rice compared with
For drying, internal moisture is insufficient, the strong disadvantage of rice mouthfeel starch sense, and the heating of prolonged use plastic containers can be to people
Body generates harm.
Invention content
It is an object of the invention to the deficiencies for above-mentioned existing microwave rice cooker, provide a kind of based on the micro- of microwave Meta Materials
Wave stove rice cooker is kept the moisture inside rice, avoided to be evenly heated to rice using the suction wave principle of microwave Meta Materials
Plastic containers heating can generate harm to human body.
The technical proposal of the invention is realized in this way：
One, technical principles
The present invention is to allow liner pot to generate heat by multiple induction loop by currently popular IH electric cookers, is equivalent to more
A heat source simultaneously heats rice, quick heating, and the efficiency of heating surface is high, and food is heated evenly, and advantage in good taste, passes through painting
It covers Meta Materials surface and makes and can be evenly heated in micro-wave oven realization, that is, achieve the effect that multiple heat sources while heating, ensure food
The effect of IH electric cookers can be met or exceeded, and is avoided that the rice cooker of electric arc.
Two, technical solutions
According to above-mentioned principle, the present invention uses the container and lid of nonmetallic cylindrical shape, it is characterised in that：
The inner wall of container and inner wall bottom are coated with the fire-resistant nontoxic stable metal material that one layer of fusing point is more than 500 DEG C
Face, the outer wall layer of container and outer wall bottom are coated with the split-ring resonator that resonant frequency is 2.45GHz, metal covering and medium
Layer, resonant ring constitute absorbing meta-material, for absorbing microwave energy, and are translated into thermal energy, then pass through metal faced heating
Food；
The upper and lower part of lid is coated with the circular open metal resonant ring that resonant frequency is 2.45GHz respectively and one layer molten
Fire-resistant nontoxic metal material charge level of the point more than 500 DEG C, forms closed system, for stopping that microwave is directly entered together with container
Inside container, microwave is avoided to play the danger for generating electromagnetic induction on the metal covering of rice cooker inner wall and causing, while from absorbing microwave
Energy is simultaneously translated into thermal energy, then by metal faced heating food, rice cooker is made to be heated from different directions to food,
Heating is more uniform.
Preferably, being characterized in that, the metal covering selects iron material.
Preferably, being characterized in that, the metal resonant ring selects the heat safe copper or iron that fusing point is more than 500 DEG C.
Preferably, be characterized in that, the container material be ceramics of fusing point of the dielectric constant more than 4 more than 500 DEG C or
Glass material.
Preferably, being characterized in that, the split ring resonator is notched circular metal ring.
Preferably, being characterized in that, split ring resonator internal diameter, outer diameter, openings of sizes and the period pass through finite difference
Calculation of group dividing is simultaneously obtained by electromagnetic simulation software simulation optimization.
The invention has the advantages that：
1. the present invention by metal covering, dielectric layer and split ring resonator layer due to forming absorbing meta-material, thus energy will be micro-
Wave energy switchs to thermal energy, recycles thermal energy to heat food, solves the problems, such as that micro-wave oven heat penetration is limited, therefore adds
The amount of hot food can be more than common rice cooker.
2. the present invention collectively forms full-closed structure by container and lid, it is not only able to blocking microwave and is directly entered in container
Portion avoids microwave from playing the danger for generating electromagnetic induction on the metal covering of rice cooker inner wall and causing, while enabling rice cooker omnidirection
Food is heated, heating it is more uniform.
3. the present invention entire rice cooker outside, each unit split ring resonator since unit split ring resonator is evenly distributed on
For heat source, it can accomplish a large amount of heat sources simultaneously and comprehensive heating food, therefore efficiency of heating surface height and homogeneous heating, making
Food mouthfeel is splendid.
4. material of the present invention selects fusing point to be more than 500 DEG C of non-toxic stable material, can be used for a long time and harmless.
5. the working frequency of the present invention is chosen to be 2.45GHz, which is the working frequency range of micro-wave oven, selects the frequency range can
Rice cooker is set to work in market all micro-wave ovens on sale.
6. the dielectric layer material of the present invention is the high dielectric constant material that dielectric constant is more than 4, rice cooker thickness can be substantially
It reduces, under 2.45GHz frequencies, between the thickness of rice cooker can accomplish 2~4 millimeters, metal faced thickness is 1~2 millimeter
Between, between the thickness of split ring resonator layer is 0.1~0.5 millimeter, therefore this rice cooker integral thickness and quality and common rice cooker
It is too many compared to that will not differ.
7. the present invention realizes conversion of the microwave energy to thermal energy due to the use of Meta Materials, and is supplied by micro-wave oven
Can, there is no need to which circuit, power supply is additionally arranged, enormously simplify design process and processing program.
Description of the drawings
Fig. 1 is the tomograph of the present invention；
Fig. 2 is the use state cross-sectional view of the present invention；
Fig. 3 is the flow diagram that the present invention is converted by microwave heating food energy；
Fig. 4 is the split ring resonator layer schematic diagram in the present invention；
Fig. 5 is absorption curve figure of the Meta Materials in the present invention to microwave.
Specific implementation method
The specific implementation method of the present invention is illustrated with reference to legend and word, scheme provided by the invention is only
Preferred version is not limited only to similar scheme.
Referring to Figures 1 and 2, the present invention includes 2 two parts of container 1 and lid.Container 1 is to be more than 500 DEG C by fusing point
The hollow cylinder that wall thickness is 2~4 millimeters made of nontoxic ceramics or glass medium material 13 are moulding, by taking silicon nitride as an example,
Dielectric constant is 4.5, there is high thermal stability and Burning corrosion resistance, is a kind of current popular ceramic material.Lid 2 is
The disc for being 2~4 millimeters by fusing point thickness made of moulding more than 500 DEG C of nontoxic nonmetal medium material.The diameter of container 1
And height thinks that the diameter of the diameter and container 1 of lid 2 is consistent according to use demand.
The inner wall of container 1 and interior primary coat be covered with a layer thickness be 1~2 millimeter, fusing point it is steady more than 500 DEG C of fire-resistant nontoxic
Metallic material face 12, the outer wall layer and outer bottom of media Containers 1 are coated with promise and do period equally distributed split-ring resonator
Layer 14, as shown in figure 4, the resonant frequency of each ring is 2.45GHz, thickness is 0.1~0.5 millimeter.Split ring resonator layer 14 with
And metal faced 12 metal material selects the gold that the higher iron of thermal stability, copper or other nontoxic fusing points are more than 500 DEG C
Belong to, this example selects iron as metal material.
The lower part of lid 2 coats the fire-resistant nontoxic stable metal material that a layer thickness is more than 500 DEG C for 1~2 millimeter, fusing point
Charge level 12, the top of lid 2 are coated with promise and do period equally distributed split-ring resonator layer 14, the resonant frequency of each ring
It is 2.45GHz, thickness is 0.1~0.5 millimeter, and the metal material of split ring resonator layer 14 and metal faced 12 selects heat
Iron, copper or other nontoxic fusing points of high stability are more than 500 DEG C of metal.Metal faced, dielectric layer and opening resonance
Circular layer constitutes a kind of absorbing meta-material structure, which can will radiate in the microwave energy absorption of resonance ring surface, and will be micro-
Wave energy is converted into thermal energy, and each resonant ring in split ring resonator layer is heat source, is equivalent to multiple heat sources simultaneously to food
It is heated, the heating of uniform high-efficiency can be carried out to food 11, ensured that the taste for making food is better than common rice cooker, such as scheme
Shown in 3.
Lid 2 is covered in 1 upper end of container, forms enclosed construction, the absorption microwave which can not only be comprehensive
The microwave energy on rice cooker surface is radiated in stove, moreover it is possible to which barrier microwave energy completely is directly entered inside rice cooker.Under normal circumstances,
It when metal is put into micro-wave oven, redistributes the charge of metal surface due to the electromagnetic field in micro-wave oven, generates potential difference,
Breakdown arc is formed, and radiation in the microwave energy absorption of resonance ring surface and can be switched to heat by the metamaterial structure in the present invention
Can, prevent the danger that metal is put into micro-wave oven initiation.
The split ring resonator is designed by electromagnetic field design software HFSS or CST, is obtained using the software
Accurate result.The design parameter of split ring resonator layer 14 includes：Period, interior outer radius and opening bore, are determining dielectric layer
After 13 dielectric constant and thickness, the available finite difference calculus of these parameters calculates, and is emulated by electromagnetic simulation software excellent
Change obtains.It is 4.5 that this example, which selects dielectric constant, dielectric layer 13 of the silicon nitride that thickness is 4 millimeters as container 1, metal covering
12 thickness of layer are 1.5 millimeters, and 14 thickness of split ring resonator layer is 0.1 millimeter, by simulation optimization, determines the interior of split ring resonator
Diameter is 8 millimeters, and outer diameter is 9.6 millimeters, a length of 1.3 millimeters of aperture slots, between each resonant ring between be divided into 4 millimeters.
The working frequency of rice cooker described above is that 2.45GHz is according to various countries in industry, science and medical common frequency band
Depending on, application of the frequency range for industry, scientific research etc..Therefore the actual operating frequency of the micro-wave oven of market all exists
2.45GHz can allow rice cooker suitable for all micro-wave ovens of market using the frequency as absorption frequency.
The present invention's can be further illustrated by following tests result.
The absorbing meta-material structure of the present invention is emulated by electromagnetic simulation software, obtains Meta Materials to 2.45GHz
Microwave energy reflectivity, as shown in figure 5, from figure 5 it can be seen that microwave reflection rate of the present invention in 2.45GHz can reach -30dB
Hereinafter, 99.9% or more absorption can be carried out to microwave, show that the present invention can be fully absorbed and be converted to microwave energy.
The foregoing is merely the preferred embodiments of this rice cooker, not limiting this rice cooker, all essences in this rice cooker
With within principle, any modification, equivalent substitution, improvement and etc. done should be included within the scope of protection of the invention god.
Claims (9)
1. a kind of micro-wave oven rice cooker based on microwave Meta Materials, special using the container 1 and lid 2 of nonmetallic cylindrical shape
Sign is：
The inner wall of container 1 and inner wall bottom are coated with the fire-resistant nontoxic stable metal material face 11 that one layer of fusing point is more than 500 DEG C,
The outer wall layer of container 1 and outer wall bottom are coated with the split-ring resonator 12 that resonant frequency is 2.45GHz, metal covering and medium
Layer, resonant ring constitute absorbing meta-material, for absorbing microwave energy, and are translated into thermal energy, then pass through metal faced heating
Food；
The upper and lower part of lid 2 is coated with the circular open metal resonant ring 12 and one layer of fusing point that resonant frequency is 2.45GHz respectively
Fire-resistant nontoxic metal material charge level 11 more than 500 DEG C, closed system is formed with container 1 together, for stop microwave directly into
Enter inside container, avoids microwave from playing the danger for generating electromagnetic induction on the metal covering of rice cooker inner wall and causing, while absorbing micro-
Wave energy is simultaneously translated into thermal energy, then by metal faced heating food, rice cooker is made to add from different directions to food
Heat, heating are more uniform.
2. the micro-wave oven rice cooker according to claim 1 based on microwave Meta Materials, which is characterized in that metal covering 11 selects iron
Material.
3. the micro-wave oven rice cooker according to claim 1 based on microwave Meta Materials, which is characterized in that metal resonant ring 12 selects
It is more than 500 DEG C of heat safe copper or iron with fusing point.
4. the micro-wave oven rice cooker according to claim 1 based on microwave Meta Materials, which is characterized in that 1 material of container is to be situated between
Fusing point of the electric constant more than 4 is more than 500 DEG C of ceramics or glass material.
5. the micro-wave oven rice cooker according to claim 1 based on microwave Meta Materials, which is characterized in that the opening resonance
Ring is notched circular metal ring.
6. the micro-wave oven rice cooker according to claim 1 based on microwave Meta Materials, which is characterized in that the opening resonance
Ring internal diameter, outer diameter, openings of sizes and period are calculated by finite difference calculus and are obtained by electromagnetic simulation software simulation optimization.
7. the micro-wave oven rice cooker according to claim 1 based on microwave Meta Materials, which is characterized in that the thickness of metal covering 12
It is 1-2 millimeters.
8. the micro-wave oven rice cooker according to claim 1 based on microwave Meta Materials, which is characterized in that split ring resonator layer 14
Thickness be 0.1-0.5 millimeters.
9. the micro-wave oven rice cooker according to claim 1 based on microwave Meta Materials, which is characterized in that the thickness of dielectric layer 13
It is 2-4 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320309.7A CN108477972A (en) | 2018-04-11 | 2018-04-11 | Micro-wave oven rice cooker based on microwave Meta Materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320309.7A CN108477972A (en) | 2018-04-11 | 2018-04-11 | Micro-wave oven rice cooker based on microwave Meta Materials |
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| Publication Number | Publication Date |
|---|---|
| CN108477972A true CN108477972A (en) | 2018-09-04 |
Family
ID=63315420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810320309.7A Pending CN108477972A (en) | 2018-04-11 | 2018-04-11 | Micro-wave oven rice cooker based on microwave Meta Materials |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395899A (en) * | 2002-08-09 | 2003-02-12 | 董含斌 | Microwave pan |
| CN101156744A (en) * | 2007-10-18 | 2008-04-09 | 美的集团有限公司 | Microwave cooking appliance |
| CN101772231A (en) * | 2010-02-03 | 2010-07-07 | 电子科技大学 | Microwave heating device with metamaterials |
| JP2013133958A (en) * | 2011-12-26 | 2013-07-08 | Toppan Printing Co Ltd | Microwave oven heat generator |
| CN106192712A (en) * | 2016-07-22 | 2016-12-07 | 西安电子科技大学 | Bituminous paving microwave heating means on the spot based on electromagnetism Meta Materials |
-
2018
- 2018-04-11 CN CN201810320309.7A patent/CN108477972A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395899A (en) * | 2002-08-09 | 2003-02-12 | 董含斌 | Microwave pan |
| CN101156744A (en) * | 2007-10-18 | 2008-04-09 | 美的集团有限公司 | Microwave cooking appliance |
| CN101772231A (en) * | 2010-02-03 | 2010-07-07 | 电子科技大学 | Microwave heating device with metamaterials |
| JP2013133958A (en) * | 2011-12-26 | 2013-07-08 | Toppan Printing Co Ltd | Microwave oven heat generator |
| CN106192712A (en) * | 2016-07-22 | 2016-12-07 | 西安电子科技大学 | Bituminous paving microwave heating means on the spot based on electromagnetism Meta Materials |
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Application publication date: 20180904 |
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