CN114051296A - Auxiliary heating plate and microwave oven - Google Patents

Auxiliary heating plate and microwave oven Download PDF

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Publication number
CN114051296A
CN114051296A CN202111546257.3A CN202111546257A CN114051296A CN 114051296 A CN114051296 A CN 114051296A CN 202111546257 A CN202111546257 A CN 202111546257A CN 114051296 A CN114051296 A CN 114051296A
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China
Prior art keywords
auxiliary heating
heating plate
layer
microwave
pan
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CN202111546257.3A
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Chinese (zh)
Inventor
尹生
刘磊
彭学刚
明鹏
于帅
杨建军
何惊华
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Aerospace Science And Industry Wuhan Magnetism Electron Co ltd
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Aerospace Science And Industry Wuhan Magnetism Electron Co ltd
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/64Heating using microwaves
    • H05B6/6408Supports or covers specially adapted for use in microwave heating apparatus

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)
  • Cookers (AREA)

Abstract

The invention discloses an auxiliary heating plate and a microwave oven, wherein the auxiliary heating plate is arranged in a microwave environment and comprises a plate body and a functional layer, the functional layer is arranged on at least one side of the plate body in the thickness direction and used for converting electromagnetic energy into heat energy and carrying out auxiliary heating on an object carried on the plate body. The heating layer is arranged, so that partial microwave energy is converted into heat, multiple heating is formed through self heat radiation and heat conduction with the heated object, and the heating efficiency can be improved.

Description

Auxiliary heating plate and microwave oven
Technical Field
The invention relates to the technical field of microwave energy conversion devices, in particular to an auxiliary heating plate and a microwave oven.
Background
With the development of modern science and technology, various novel technologies are innovatively applied in military and civil fields, and the market has more and more urgent requirements on products for serving life and improving the living comfort. The tray in the microwave heating stove of present mainstream only plays the bearing effect, and food heating efficiency mainly depends on heating power, and is restricted by microwave transmission distance and loss, and heating efficiency is lower, is difficult to satisfy to the demand that needs quick large capacity heating.
Chinese patent document No. CN202613522U discloses a microwave oven with a water storage box in 12/19/2012, which can generate steam to enter the inner space of the hood after water in the lower water storage box is heated when heating food, and can supplement heating and keep moisture, but this method is not suitable for heating fragile objects and has low heating efficiency.
Disclosure of Invention
The invention mainly aims to provide an auxiliary heating plate and a microwave oven, aims to make up for the inherent technical defects of the existing microwave heating, provides the auxiliary heating plate for the microwave, and improves the heating efficiency of food in the microwave oven.
In order to achieve the above purpose, the present invention provides an auxiliary heating plate, where the auxiliary heating plate includes a plate body and a functional layer, where the functional layer is disposed on at least one side of the plate body in a thickness direction, and the functional layer is used to convert electromagnetic energy into heat energy to assist in heating an object carried on the plate body.
Optionally, the material of which the functional layer is made comprises an electrically or magnetically lossy material.
Optionally, the electrically lossy material comprises at least one of carbonyl iron powder, ferrosilicon-aluminum alloy, ferrite, polycrystalline iron fiber, and silicon carbide.
Optionally, the magnetically lossy material comprises at least one of conductive carbon black, graphene, carbon nanotubes, polyaniline, indium tin oxide, and fluorine doped tin oxide.
Optionally, there are two of the functional layers, and the two functional layers include a first layer and a second layer that are respectively provided on two opposite sides in a thickness direction of the tray body.
Optionally, the first layer has a thickness of T1, 0.0001mm ≦ T1 ≦ 1 mm; the thickness of the second layer is T2, and T2 is more than or equal to 0.0001mm and less than or equal to 1 mm.
Optionally, the material of the tray body comprises ceramic or glass.
Optionally, the thickness of the tray body is T0, and T0 is more than or equal to 1mm and less than or equal to 12 mm.
Optionally, the relative dielectric constant of the material of the tray body is epsilon 1, and epsilon 1 is more than or equal to 1.1 and less than or equal to 10.
The invention also provides a microwave oven, which comprises a cavity, a microwave source and the auxiliary heating plate, wherein the microwave source and the auxiliary heating plate are both arranged in the cavity, the emission end of the microwave source faces the auxiliary heating plate, and the microwave source is used for carrying out microwave heating on an object on the auxiliary heating plate.
In the technical scheme of the invention, the functional layer converts electromagnetic energy into heat energy in a microwave environment through the disc body and the functional layer arranged on at least one side of the disc body, the disc body and the functional layer jointly form an electromagnetic resonance wave-absorbing structure, and the strong resonance of electromagnetic waves with working frequency in the microwave oven enables part of the energy of the electromagnetic waves to be absorbed by the auxiliary heating disc and generate heat, so that the heating efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a side view of one embodiment of an auxiliary heating plate provided by the present invention;
FIG. 2 is a top view of one embodiment of the auxiliary heating disk provided in FIG. 1;
FIG. 3 is a schematic diagram of the structure of the first layer provided in FIG. 1;
FIG. 4 is a top view of another embodiment of an auxiliary heating disk provided in accordance with the present invention;
fig. 5 is a data graph of the reflection curve of the auxiliary heating plate provided by the invention for the microwaves with vertical incidence.
The reference numbers illustrate:
Figure BDA0003414782270000021
Figure BDA0003414782270000031
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments.
It should be noted that those whose specific conditions are not specified in the examples were performed according to the conventional conditions or the conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
With the development of modern science and technology, various novel technologies are innovatively applied in military and civil fields, and the market has more and more urgent requirements on products for serving life and improving the living comfort. The tray in the microwave heating stove of present mainstream only plays the bearing effect, and food heating efficiency mainly depends on heating power, and is restricted by microwave transmission distance and loss, and heating efficiency is lower, is difficult to satisfy to the demand that needs quick large capacity heating. In view of this, the present invention provides an auxiliary heating tray, which aims to improve the efficiency of heating food in a microwave oven.
Referring to fig. 1 to 2, the auxiliary heating plate 100 provided in a microwave environment includes a plate body 1 and a functional layer 2, the functional layer 2 is disposed on at least one side of the plate body 1 in a thickness direction, and the functional layer 2 is configured to convert electromagnetic energy into heat energy to assist in heating an object carried on the plate body 1.
Through the disk body 1 and the functional layer 2 arranged on at least one side of the disk body 1, under a microwave environment, the functional layer 2 converts electromagnetic energy into heat energy, the disk body 1 and the functional layer 2 jointly form an electromagnetic resonance wave-absorbing structure, strong resonance is generated on electromagnetic waves with working frequency in a microwave oven, partial energy of the electromagnetic waves is absorbed by the auxiliary heating plate 100 and generates heat, and heating efficiency is improved. The auxiliary heating plate 100 can convert part of microwave energy into heat, and further form multiple heating through self heat radiation and heat conduction with the heated object, and can improve heating efficiency, and its appearance structure is similar to that of a common tray, and can be one of a circle, a rectangle, a fan, a triangle, a hexagon or their deformation. It should be noted that the auxiliary heating plate 100 is independently operated, does not need to be mechanically fixed inside the microwave oven, and can be conveniently stored and taken out as a general tray.
Specifically, the material of the functional layer 2 includes an electrically or magnetically lossy material. The electric loss material or the magnetic loss material can effectively lose and absorb high-power microwaves in the microwave oven, and convert electromagnetic energy into heat energy to heat food.
More specifically, the electrically lossy material comprises at least one of carbonyl iron powder, iron silicon aluminum alloy, ferrite, polycrystalline iron fibers, and silicon carbide. The electrically lossy material may be selected from one of the above materials, or a mixture of several materials for better results.
More specifically, the magnetic loss material includes at least one of conductive carbon black, graphene, carbon nanotubes, polyaniline, indium tin oxide, and fluorine-doped tin oxide. When selecting the magnetic loss material, the material depends on high magnetic permeability and high magnetic loss near the microwave working frequency band, and has a proper dielectric constant, so that a good impedance matching can be formed to enable the microwave to enter the inside of the disc body 1. The magnetic loss material may be selected from one of the above materials, or a mixture of several materials for the purpose of obtaining a better effect.
Referring to fig. 1 and 4, the functional layers 2 are provided in two, and the two functional layers 2 include a first layer 21 and a second layer 22 that are respectively provided on two opposite sides in the thickness direction of the disk body 1. In order to improve the heating efficiency, the functional layer 2 is provided with two layers, the functional layer 2 may be a complete film or a periodic or non-periodic structure obtained by patterning the functional film, and the etched portion of the periodic or non-periodic structure may be one of a square ring, a circular ring, a split ring, a square piece, a circular piece, a rectangular piece, or a variation thereof, and is not limited in detail herein.
Specifically, the thickness of the first layer 21 is T1, and T1 is more than or equal to 0.0001mm and less than or equal to 1 mm; the thickness of the second layer 22 is T2, and T2 is more than or equal to 0.0001mm and less than or equal to 1 mm. The thicknesses of the first layer 21 and the second layer 22 may be the same or different, and are specifically adjusted according to the actual situation.
Referring to fig. 1, the tray 1 is made of a material including ceramic or glass. Glass and ceramic materials are excellent in heat resistance and do not generate substances harmful to the human body at high temperatures.
Specifically, the thickness of the tray body 1 is T0, and T0 is more than or equal to 1mm and less than or equal to 12 mm. The thickness of the disc 1 needs to be controlled within a certain range so as not to affect the operation of the functional layer 2.
More specifically, the relative dielectric constant of the material of the tray body 1 is epsilon 1, and epsilon 1 is more than or equal to 1.1 and less than or equal to 10. The disc body 1 and the functional layer 2 form an electromagnetic resonance wave-absorbing structure together, so that strong resonance of electromagnetic waves with working frequency in the microwave oven is realized, and partial energy of the electromagnetic waves is absorbed by the auxiliary heating plate 100 and generates heat.
The invention also provides a microwave oven, which comprises a cavity, a microwave source and the auxiliary heating plate 100, wherein the microwave source and the auxiliary heating plate 100 are both arranged in the cavity, the emission end of the microwave source faces the auxiliary heating plate 100, and the microwave source is used for carrying out microwave heating on an object on the auxiliary heating plate 100. The auxiliary heating plate 100 is particularly applied to a microwave oven, and the microwave source is over against the auxiliary heating plate 100 to realize rapid heating of food.
The technical solutions of the present invention are further described in detail below with reference to specific examples and drawings, it should be understood that the following examples are merely illustrative of the present invention and are not intended to limit the present invention.
Example 1
The disk body 1 is made of ceramic; the functional layers 2 are made of iron-based alloy powder with good temperature resistance as a magnetic loss material, are uniformly dispersed in a temperature-resistant coating, and are attached to the upper surface and the lower surface of the tray body 1 in a spraying or transfer printing mode to form a first layer 21 and a second layer 22 respectively, wherein the thickness T1 of the first layer 21 is 0.2mm, and the thickness T2 of the second layer 22 is 0.4 mm. The thickness T0 of the used tray body 1 is 5mm, and the tray body has better strength and heat resistance. The functional layer 2 converts electromagnetic energy into heat energy by means of loss of high-power microwaves in the microwave oven, generates self-heating and carries out auxiliary heating on the objects in the disc
Example 2
The disk 1 is made of high boron glass, the functional layer 2 is made of an electrically lossy material, in particular ITO, and the first layer 21 and the second layer 22 have a partial structure with a period of 4 x 4 (see fig. 4). The thickness of the disc 1 is 5.2mm and its dielectric constant is 4.8. The first layer 21 and the second layer 22 are arranged on the upper surface and the lower surface of the tray body 1 at intervals, the first layer 21 is an ITO conductive film with a square sheet-shaped periodic structure, the periodic unit structure is 20mm, the size of the structure in the unit is 18.5mm, the conductivity is 20 omega/sq, and the thickness T1 of the first layer 21 is 0.00012 mm; the second layer 22 was made of an ITO continuous conductive film having a conductivity of 10. omega./sq and a material thickness T2 of 0.00016 mm. The reflection curve of the auxiliary heating plate designed for the microwave with vertical incidence is shown in figure 5.
Example 3
The difference from embodiment 2 is that the disk body 1 is made of ceramic, the functional layer 2 is made of carbon film made of chopped carbon fiber, and the appearance layer is black, and the thickness of the functional layer 2 is different due to different materials, the disk body 1 made of ceramic material has a thickness T0 of 5.2mm, a thickness T1 of 0.08mm for the first layer 21 and a thickness T2 of 0.12mm for the second layer 22, and the conductivity and period are consistent with embodiment 2.
The above is only a preferred embodiment of the present invention, and it is not intended to limit the scope of the invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall be included in the scope of the present invention.

Claims (10)

1. The utility model provides an auxiliary heating plate, is used in microwave oven, its characterized in that, auxiliary heating plate includes disk body and functional layer, at least one side on the thickness direction of disk body is equipped with the functional layer, the functional layer is used for turning into electromagnetic energy heat energy, and is right the object that bears on the disk body carries out auxiliary heating.
2. An auxiliary heating plate as claimed in claim 1, wherein the functional layer is made of a material comprising an electrically lossy material or a magnetically lossy material.
3. The auxiliary heating pan of claim 2, wherein the electrically lossy material comprises at least one of carbonyl iron powder, iron silicon aluminum alloy, ferrite, polycrystalline iron fiber, and silicon carbide.
4. The auxiliary heating disk of claim 2, wherein the magnetically lossy material comprises at least one of conductive carbon black, graphene, carbon nanotubes, polyaniline, indium tin oxide, and fluorine-doped tin oxide.
5. The auxiliary heating pan as claimed in claim 1, wherein there are two of the functional layers, and the two functional layers include a first layer and a second layer which are provided on two opposite sides in a thickness direction of the pan body.
6. The auxiliary heating plate of claim 5, wherein the thickness of the first layer is T1, 0.0001mm ≦ T1 ≦ 1 mm; the thickness of the second layer is T2, and T2 is more than or equal to 0.0001mm and less than or equal to 1 mm.
7. The auxiliary heating pan of claim 1, wherein the material of which the pan body is made comprises ceramic or glass.
8. The auxiliary heating plate as claimed in claim 1, wherein the thickness of the plate body is T0, T0 is 1mm or more and 12mm or less.
9. The auxiliary heating pan as claimed in claim 2, wherein the relative dielectric constant of the material of which said pan body is made is e 1, e 1 is 1.1 ≦ e 1 ≦ 10.
10. A microwave oven, comprising a cavity, a microwave source and the auxiliary heating plate of any one of claims 1 to 9, wherein the microwave source and the auxiliary heating plate are both disposed in the cavity, the emitting end of the microwave source faces the auxiliary heating plate, and the microwave source is used for performing microwave heating on an object on the auxiliary heating plate.
CN202111546257.3A 2021-12-16 2021-12-16 Auxiliary heating plate and microwave oven Pending CN114051296A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001128847A (en) * 1999-11-04 2001-05-15 Totu:Kk Heat generating tray for microwave oven and heating medium material of heat generating tray for microwave oven as well as method for manufacturing heat generating tray for microwave oven
CN201641676U (en) * 2010-04-02 2010-11-24 邱凤阳 Frying and baking ceramic ware of microwave oven
CN201779719U (en) * 2009-12-24 2011-03-30 海尔集团公司 Dual-cavity compound-heating multifunctional microwave oven
CN103086717A (en) * 2011-10-28 2013-05-08 井手和幸 Ovenware for microwave oven
CN207355968U (en) * 2014-07-24 2018-05-15 布瑞威利私人有限公司 Barbecuing plate for micro-wave oven

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001128847A (en) * 1999-11-04 2001-05-15 Totu:Kk Heat generating tray for microwave oven and heating medium material of heat generating tray for microwave oven as well as method for manufacturing heat generating tray for microwave oven
CN201779719U (en) * 2009-12-24 2011-03-30 海尔集团公司 Dual-cavity compound-heating multifunctional microwave oven
CN201641676U (en) * 2010-04-02 2010-11-24 邱凤阳 Frying and baking ceramic ware of microwave oven
CN103086717A (en) * 2011-10-28 2013-05-08 井手和幸 Ovenware for microwave oven
CN207355968U (en) * 2014-07-24 2018-05-15 布瑞威利私人有限公司 Barbecuing plate for micro-wave oven

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