CN1528107A - Device for heating a material by microwave application - Google Patents
Device for heating a material by microwave application Download PDFInfo
- Publication number
- CN1528107A CN1528107A CNA018169066A CN01816906A CN1528107A CN 1528107 A CN1528107 A CN 1528107A CN A018169066 A CNA018169066 A CN A018169066A CN 01816906 A CN01816906 A CN 01816906A CN 1528107 A CN1528107 A CN 1528107A
- Authority
- CN
- China
- Prior art keywords
- antenna
- microwave
- transmission line
- heater
- microwave energy
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- 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
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- 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
- H05B6/72—Radiators or antennas
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Electric Ovens (AREA)
Abstract
The invention concerns a microwave heating device designed for use in an oven for cooking food. Said device comprises a microwave generator (1) and means for diffusing (2) said energy in a working zone (3). The invention is characterised in that at least a patch antenna (10) adapted to sense the microwaves is arranged in the working zone. Said antenna is connected to an electromagnetic wave propagating line (11) of length L to ensure propagation of the microwaves sensed by the antenna, and whereof the end (12) is adapted to reflect part of said waves towards the antenna. The antenna (10) then retransmits said reflected waves into the chamber (26) with a specific phase shift determined by the length L of the propagation line.
Description
Technical field
The invention reside in an application of microwave energy the device of material heating, a microwave generator and some are wherein arranged the device of microwave energy in the working region distribution.The present invention particularly in, but be not limited to, food is cooked the electromagnetic microwave stove of usefulness.
Background technology
The problem of using microwave energy heatable substance device to run into is the distribution of microwave energy intensity in the working region.In fact be difficult to obtain the even distribution of microwave energy.And the reflection of microwave has caused the formation standing wave; Have the zone of microwave energy weak strength and make thus to heat here and die down.First solution that is used for microwave oven is to place a mixer that is called " blender " in microwave field.The propeller that one rotation is arranged in traditional blender, its blade stir with at random mode and reflect ripple in the furnace chamber.Another kind of solution is exactly a method commonly used now, is that food is placed on the platform of a rotation, so that food constantly passes through the high energy district and the low energy district of microwave.
These two kinds of methods all can not be satisfied the demand fully, particularly can not obtain enough energy in the center of microwave cavity.Just must microwave better be distributed so actually and manufacture a pizza.These two kinds of methods can not change the distribution of microwave energy according to food type or in cooking the process of carrying out.And the manufacturing expense that motor and mechanical device caused of driven rotary dish is very important.
Summary of the invention
The objective of the invention is to compensate above-mentioned defective in the distribution of working region and the distribution of control standing wave with the controlled microwave energy.
According to the present invention, in the working region, place a plate type antenna that can obtain microwave at least, this antenna and length are
LThe electromagnetic transmission line link to each other, with the transmission of the microwave that guarantees antenna is obtained, and the termination of transmission line can be to the microwave of this antenna-reflected part.
So this antenna is just there to be definite phase difference to launch the microwave that is reflected by the transmission line termination again with respect to the incident microwave.This phase difference is the length by transmission line
LThe decision, can select this phase difference, make incident wave and again transmitted wave effectively superpose.Can strengthen selected microwave energy partly in the service area by means of this measure, can obtain more uniform integral energy especially and distribute.
According to a useful especially feature of the present invention, can the length of transmission line be existed by means of at least one final controlling element that changes the transmission line tip position
LArrive
L+
Δ LBetween change.This measure can change the microwave energy intensity in the given area according to the needs of heating.For example when heated food, can according to the character of food, shape, in the position of service area or the situation of cooking progress change the length of transmission line
LThis measure can make the position change of standing wave equally in heating process.
Description of drawings
To further find out characteristics of the present invention and superiority in the description with reference to the accompanying drawings in the back.The description of back be exemplary be not to be restrictive.Accompanying drawing is:
-Fig. 1 is the vertical cross section of a microwave oven, wherein the heater of with good grounds application of microwave energy of the invention process;
-Fig. 2 a and 2b are the top views that is used for implementing two kinds of plate aerials of the present invention;
-Fig. 3 is illustrated in every middle temperature altitude chart in 25 squares that are divided in the microwave oven according to prior art.
-Fig. 4 is illustrated in and adds the temperature altitude chart of realizing according to device of the present invention in the aforesaid microwave oven.
-Fig. 5 illustrates the another kind of execution mode of heater, a wherein schematically illustrated view of cooking the chamber base plate with planar antenna net.
Embodiment
The dissemination apparatus 2 that a microwave generator 1 and the microwave energy in service area 3 are arranged in the device that uses the microwave energy heatable substance as shown in Figure 1.Microwave generator 1 is a magnetron, and in waveguide 5, waveguide 5 spreads to microwave energy in the service area 3 by opening 6 its antenna 4 with microwave propagation.The current suppling circuit 7 of magnetic tube 1 and type known links to each other.Certainly, can use other type microwave generator, particularly solid-state generator and not exceed scope of the present invention.For being used for the calutron that food is cooked, the frequency of used microwave generator is 2.45GHz, but also the present invention can be used to be operated in the microwave generator on other frequency, especially for the commercial Application aspect of 915MHz.
Bright according to this, the plate aerial 10 that can obtain microwave energy to one of major general is placed in the service area 3, and this antenna and length are
LElectromagnetic transmission line 11 link to each other, the energy that antenna was obtained is transmitted guaranteeing, the termination 12 of this transmission line can be to antenna 10 reflection at least a portion microwaves.
Plate aerial, English is " patch antenna (patch antenna) ", be that people are familiar with, one or more radiant panels made from conductor material that are roughly the plane 13 are wherein generally arranged, this radiant panel 13 parallels with the conductor surface that links to each other with ground substantially, this conductor surface is called ground plane, and being called between the radiation flat board of antenna and the ground plane in formation can be with dielectric or air insulation.The most frequently used radiant panel is a rectangle, but the back will be seen and can use other shape.The size of radiant panel should be suitable for obtaining microwave in the service area.Preferably the longitudinal size of plate and lateral dimension all in λ/4 between the λ, λ is the wavelength of the microwave that scatters in the service area herein.Nature, this antenna that is suitable for obtaining microwave also can be launched the microwave of same wavelength.
A conductor 15 is arranged in the electromagnetic transmission line 11 usually, be positioned near the plane 16 of ground connection, the insulation between the two can realize with dielectric material or air.
The termination 12 of transmission line is suitable for the reflection that makes electromagnetic wave good.For this reason, termination 12 can be free end in air.Yet preferably allow this termination contact with face 17 perpendicular with transmission line and that link to each other with ground.This just can make big portion electromagnetic wave to antenna-reflected.This reflected wave is different with the electromagnetic wave that generates reflection on the wall 20 of cooking the chamber.In fact, do not have to mean under the situation of conductor and make that the phase place of reflection of electromagnetic and incident electromagnetic field is opposite cooking locular wall, cause energy loss.
So the antenna 10 that is in the service area obtains its surperficial incident microwave of arrival, and gives transmission line 11 with the microwave energy transfer of obtaining.In the termination 12 of transmission line with microwave to antenna-reflected, antenna 10 is just launched microwave to service area 3 again, again Fa She microwave with respect to the phase difference φ of incident wave by formula
ΔΦ=(4 π/λ) *
LProvide.λ is the wavelength of the microwave that scatters in the service area herein,
LBe the length of transmission line 11, promptly conductor 15 from the contact of it and radiant panel 13 to the length the transmission line termination 12.
So, to length
LSelection determined incident wave and the phase difference between transmitted wave again.If select
LMake then to obtain incident wave and this phase place of transmitted wave is opposite again the microwave superposition and disappear mutually, just make the microwave energy at antenna area weaken.On the contrary, if select
L, make incident wave and again the superposition of transmitted wave be mutually to strengthen, strengthen at the energy of antenna area microwave, just make the ability of high heatable substance.Certainly between both of these case to length
LVarious choosing all be fine.
Preferably the shape of plate aerial 10 is suitable for launching the circular polarization field, has the flat plane antenna of multiple shape to obtain this.This in general antenna is characterised in that its longitudinal size and lateral dimension equate substantially.As the inclined to one side antenna 10,10 of two kinds of circles shown in Fig. 2 a and the 2b '.Fig. 2 a illustrates first kind of shape 10 of antenna, for cutting the square at two diagonal angles 22,23.Fig. 2 b illustrate second kind of shape 10 of antenna ', for opposite two and half through on have two rectangle grooves 22 ', 23 ' circle.The field that such antenna is set up is rotated mobile, and can make microwave energy that good distribution is arranged in the service area.
Can change the distribution of microwave in the service area reliably with such device, or energy is strengthened, or energy is weakened.The household electrical appliance that the present invention can be used for multiple microwave heating equipment, particularly cook food, for example microwave oven.
In order to realize such microwave oven, as shown in Figure 1, with service area 3 and prevent that microwave from revealing cook chamber 26 separately, the wall 20 of cooking the chamber is connected with ground, have at least one to push up 27 and one in the described wall at the bottom of 28 and one (not drawing among the figure) with the food introducing.The functional programming device of addressing 29 of cooking chamber 26, microwave generator 1 and generator 1 all is positioned at the casing 30 that constitutes the stove case.
For programmer 29, various known devices can be used for this household electrical appliance.Can use simple timer, also can use can be according to the type of the food of cooking and the comparatively complicated program system that situation is come power controlling and running.In this case, programmer 29 will be connected with unillustrated touch key among a plurality of figure, be used for choosing suitable program.
According to desirable mode, antenna 10 is to use the baffle 31 of microwave and the food of cooking are separated, and this has just been avoided the sputter on the oriented antenna 10 of institute, and this sputter can be made a mess of antenna or change antenna characteristics.The baffle 31 here is with realizing with a glass plate of base plate 28 parallel placements.Certain the present invention also is not precluded within rotating platform of baffle 31 upper stratas use.
As shown in Figure 1, use the ground plate of the part 14 of the wall of cooking chamber 26, so both can reduce the volume of antenna 10 in cooking the chamber, also can reduce cost as antenna 10.
The insulation that radiant panel 13 and ground plate are 14 guarantees that with an air layer this both can carry big power, and also can do dielectric material has the long life-span.
The radiant panel 13 of antenna can use insulating support substrate with the part 14 that keeps and cook the wall of chamber 26 distance, d to be arranged, and in desirable execution mode, be only to use an electromagnetism neutral point 33 to extend to the conductor holder 32 of the part 14 of this wall from antenna, usually this electromagnetism neutral point is the geometric center corresponding to antenna, the label as shown in Fig. 2 a and 2b is 33 and 33 ' point.So just the installation of antenna is simplified.
The length of computer transmission line 11
L, make the superposition realization microwave of the microwave that the microwave that scatters in the chamber of cooking and antenna are launched again cook the even distribution in the chamber 26.
According to a particularly advantageous characteristics of the present invention, 12 positions, termination that change transmission line 11 by means of at least one final controlling element 35 exist the length of transmission line 11
LWith
L+
Δ LBetween change.Referring to shown in Figure 1, the termination 12 of transmission line can be from the position 36 carries out the transition to the position 37 that is shown in broken lines.By means of this device, can obtain microwave energy and cook indoor different distributions.
According to a kind of method easily, work device 35 links to each other with programmer 29.The storage device 38 of actuation means 39 that the work device arranged in the programmer 29 and the different length that is suitable for the different transmission lines of cooking program and representing.
For example, for thawing, can wish at the microwave energy at food center greatlyyer, and for cooking dessert, then the distribution of microwave energy is preferably wanted evenly.Can also be according to the distribution of shape of food and position change microwave energy.The program selected according to the user, programmer 29 is chosen the length that is applicable to this program in the length of being stored
L, this value uses control device 39 to be transferred to work device 35 as reference point.
Programmer 29 can also change the length of transmission line 11 with the mode of circulation in the heating operation process.This configuration can be moved and be cooked indoor standing wave, so can be without rotating platform.The algorithm of the certainly various controls that change for length of transmission line all is operable.
The needed length variations of microwave energy distributed architecture for topped various hope
Δ LBe to be less than or equal to 1/4th wavelength X, for example for the microwave that scatters in the chamber of cooking of 2.45GHz, this length is 3cm.
In a kind of desirable execution mode, transmission line 11 is coaxial lines of a kind of circular cross section, its conductor 15 and constitute by face 16 at least around tubular shielding between be with air-insulated.The termination 12 of transmission line is to realize with the ring-type electric conductor piston 41 in the space between the shielding 16 that is in center conductor 15 and transmission line.This piston 41 can move along axis 11 by the work device 35 of wire.The front surface 17 that is installed in the piston 41 in the transmission line 11 has like this constituted a face that links to each other with ground, has constituted the termination of transmission line, the reflection here of most electromagnetic wave.This device is beneficial especially, because this can change the length of transmission line continuously, and implements also quite simple.Can certainly use other method, for example use the coaxial line of telescope cartridge type, or use length to be
LTransmission line and length be
Δ LThe device that connects of transmission line section.
Shown in Figure 4 according in the another embodiment of the invention, cook and have one in the chamber 26 by n plate aerial A1, A2 ... the antenna networks 50 that An forms, each plate aerial A1, A2 ... An with length is respectively
L1,
L2
LThe transmission line 51,52 of n ... 65 link to each other.Under the situation shown in the figure, these antenna networks 50 are arranged according to square by 25 antennas and are formed.This net 50 can be arranged into each limit that is parallel to a wall 20 of cooking chamber 26.Can calculate the length of each transmission lines
L1,
L2
LN makes the microwave of emission again strengthen at one that cooks the chamber 1: 49 superposition that is called focus point, and the microwave energy that obtains there is strong especially.Preferably these antenna networks can constitute the base plate of little those stoves and be protected by for example screen to microwave.
Can be with aforesaid antenna A
1, A
2A
nLink to each other with previously described adjustable length transmission line, preferably can by means of final controlling element 71,72 ..., 85 change each transmission line 51,52 ... 65 length
L1,
L2
LN is to change the position of focus point 49 in cooking operating process, by means of scanning and guarantee to cook in the volume of this configuration to food evenly.
Claims (15)
1. utilize the device of microwave energy to material heating, comprising a microwave generator (1) is arranged and in service area (3) device (2) of dispersing microwave energy,
It is characterized in that placing at least in service area (3) planar antennas (10) that is suitable for obtaining microwave, antenna of addressing and length are
LElectromagnetic transmission line (11) connect, with the microwave transmission that antenna was obtained, the termination of this transmission lines (12) are suitable near small part electromagnetic wave and reflect to antenna (10).
2. according to the heater that utilizes microwave energy of claim 1, it is characterized in that the shape of the planar antennas addressed is suitable for launching the circular polarization electromagnetic field.
3. according to the heater that utilizes microwave energy of claim 1 or 2, it is characterized in that the termination (12) of transmission line (11) and a face (17) of ground connection contact.
4. according to each the heater that utilizes microwave energy in the claim 1 to 3, it is characterized in that its service area is to define with a chamber (26) of cooking with microwave seal, cook a wall (20) ground connection of chamber (26), cook have a top (27) in the chamber (26) at least, (28) and the door that food is put at the bottom of one, the programmer of addressing (29) of cooking chamber (26), microwave generator (1) and generator operation is all in the casing (30) that constitutes furnace shell.
5. according to the heater that utilizes microwave energy of claim 4, it is characterized in that antenna (10) wherein separates with the chamber of cooking by a baffle to microwave (31).
6. according to the heater that utilizes microwave energy of claim 4 or 5, the ground plate that it is characterized in that antenna (10) wherein is to use the part (14) of the wall of cooking chamber (26) to constitute.
7. according to each the heater that utilizes microwave energy in the claim 4 to 6, the radiant panel (13) that it is characterized in that antenna (10) wherein extends to an electric conductor holder (32) of cooking locular wall by an electromagnetism neutral point (33) from antenna, and to keep and cook the distance of the wall of chamber (26) be d.
8. according to each the heater that utilizes microwave energy in the claim 4 to 7, it is characterized in that calculating the length of transmission line
L, make the microwave of distribution in cooking chamber (26) and the microwave that antenna (10) is launched again superpose to be implemented in the even distribution of cooking indoor microwave.
9. according to each the heater that utilizes microwave in the claim 4 to 8, it is characterized in that the length of transmission line being existed by means of the final controlling element (35) of the position of a termination (12) that changes transmission line (11)
LArrive
L+
Δ LBetween change.
10. according to the heater that utilizes microwave energy of claim 9, it is characterized in that work device (35) wherein links to each other with a programmer (30), in this programmer, have the control device (39) of work device and storage to be suitable for difference and to cook the storage device of the different length of transmission line of program running (38).
11., it is characterized in that the variable quantity of length of transmission line wherein according to the heater that utilizes microwave energy of claim 9 or 10
Δ LBe less than or equal to 1/4th of the microwave wavelength in the service area, scattered.
12. according to each the heater that utilizes microwave energy in the claim 9 to 11, it is characterized in that electromagnetic transmission line (11) wherein is a coaxial line, its termination (12) is to realize that by the ring-type electric conductor piston (41) in the space that is between central conductor (15) and the shielding on every side (16) this piston can move along axis direction by linear actuating means (35).
13., it is characterized in that wherein antenna is installed in the central area of base plate (28) according to each the heater that utilizes microwave energy in the claim 4 to 12.
14. according to each the heater that utilizes microwave energy in the claim 4 to 12, it is characterized in that cooking and have in the chamber (26) wherein by n plate aerial (A1, A2 ... An) antenna networks of Zu Chenging (50), each plate aerial (A1, A2 ... An) with length be respectively
L1,
L2
LThe transmission line of n (51,52 ... 65) link to each other, calculate the length of these transmission lines, make the microwave of emission again cook indoor point (a 49) superposition enhancing that is called focus point.
15. according to the heater that utilizes microwave energy of claim 14, it is characterized in that can by means of change transmission line (51,52 ... the final controlling element of termination 65) (71,72 ..., 85), change the length of transmission line
L1,
L2
LN cooks the focus point (49) of operating process with change.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0013425A FR2815512B1 (en) | 2000-10-18 | 2000-10-18 | DEVICE FOR HEATING A MATERIAL BY APPLYING MICROWAVES |
| FR0013425 | 2000-10-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1528107A true CN1528107A (en) | 2004-09-08 |
| CN100411494C CN100411494C (en) | 2008-08-13 |
Family
ID=8855537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB018169066A Expired - Fee Related CN100411494C (en) | 2000-10-18 | 2001-10-15 | Device for heating a material by microwave application |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1329135A1 (en) |
| KR (1) | KR20030072340A (en) |
| CN (1) | CN100411494C (en) |
| FR (1) | FR2815512B1 (en) |
| WO (1) | WO2002034013A1 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103039123A (en) * | 2010-05-03 | 2013-04-10 | 高知有限公司 | Spatially controlled energy delivery |
| CN103153814A (en) * | 2010-10-12 | 2013-06-12 | 高知有限公司 | Device and method for applying electromagnetic energy to a container |
| CN103994480A (en) * | 2013-02-18 | 2014-08-20 | 广东美的厨房电器制造有限公司 | Microwave oven |
| CN104115234A (en) * | 2012-02-14 | 2014-10-22 | 高知有限公司 | A device for applying rf energy to a cavity |
| CN105357790A (en) * | 2015-12-21 | 2016-02-24 | 电子科技大学 | Double-tube microwave oven adopting circularly polarized helical antennae as radiators |
| CN105392227A (en) * | 2015-12-21 | 2016-03-09 | 电子科技大学 | Microwave oven using circularly polarized helical antenna as radiator |
| CN105509108A (en) * | 2015-12-21 | 2016-04-20 | 电子科技大学 | Microwave oven adopting cylindrical oven chamber and taking helical antenna as radiator |
| CN106329054A (en) * | 2016-08-29 | 2017-01-11 | 广东美的厨房电器制造有限公司 | Coupling device and microwave heating device |
| CN106858270A (en) * | 2017-02-27 | 2017-06-20 | 成都沃特塞恩电子技术有限公司 | Microwave thawing cavity and device |
| CN108567111A (en) * | 2017-03-14 | 2018-09-25 | 德国福维克控股公司 | The system for cooking at least one food |
| WO2023071686A1 (en) * | 2021-10-25 | 2023-05-04 | 青岛海尔电冰箱有限公司 | Heating apparatus |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2822337B1 (en) * | 2001-03-13 | 2003-10-17 | Moulinex Sa | MICROWAVE HEATING OVEN |
| GB2391154A (en) * | 2002-07-22 | 2004-01-28 | Antenova Ltd | Dielectric resonator antennas for use as microwave heating applicators |
| WO2016001260A1 (en) | 2014-06-30 | 2016-01-07 | Goji Limited | Heating of objects by microwave energy |
| CN112556294B (en) * | 2019-09-25 | 2023-12-22 | 博西华电器（江苏）有限公司 | Heating device and refrigerator comprising same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3971909A (en) * | 1975-03-31 | 1976-07-27 | Wallick William L | Microwave oven antenna |
| US4596915A (en) * | 1985-05-07 | 1986-06-24 | Amana Refrigeration, Inc. | Microwave oven having resonant antenna |
| DE4240104A1 (en) * | 1992-11-28 | 1994-06-01 | Battelle Institut E V | Microwave heating and drying device - has flat patch antenna arrangement with dimensions selected according to radiating medium |
| US5558800A (en) * | 1995-06-19 | 1996-09-24 | Northrop Grumman | Microwave power radiator for microwave heating applications |
| KR100218444B1 (en) * | 1996-07-31 | 1999-09-01 | 구자홍 | Uniform heating device of a microwave oven |
-
2000
- 2000-10-18 FR FR0013425A patent/FR2815512B1/en not_active Expired - Fee Related
-
2001
- 2001-10-15 WO PCT/IB2001/001945 patent/WO2002034013A1/en not_active Application Discontinuation
- 2001-10-15 EP EP01978704A patent/EP1329135A1/en not_active Withdrawn
- 2001-10-15 CN CNB018169066A patent/CN100411494C/en not_active Expired - Fee Related
- 2001-10-15 KR KR10-2003-7005452A patent/KR20030072340A/en not_active Application Discontinuation
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103039123B (en) * | 2010-05-03 | 2015-09-30 | 高知有限公司 | Space controlled energy is sent |
| CN103039123A (en) * | 2010-05-03 | 2013-04-10 | 高知有限公司 | Spatially controlled energy delivery |
| US9351347B2 (en) | 2010-10-12 | 2016-05-24 | Goji Limited | Device and method for applying electromagnetic energy to a container |
| CN103153814A (en) * | 2010-10-12 | 2013-06-12 | 高知有限公司 | Device and method for applying electromagnetic energy to a container |
| CN103153814B (en) * | 2010-10-12 | 2016-08-03 | 高知有限公司 | For applying the apparatus and method of electromagnetic energy to container |
| CN104115234A (en) * | 2012-02-14 | 2014-10-22 | 高知有限公司 | A device for applying rf energy to a cavity |
| CN103994480A (en) * | 2013-02-18 | 2014-08-20 | 广东美的厨房电器制造有限公司 | Microwave oven |
| CN105392227A (en) * | 2015-12-21 | 2016-03-09 | 电子科技大学 | Microwave oven using circularly polarized helical antenna as radiator |
| CN105509108A (en) * | 2015-12-21 | 2016-04-20 | 电子科技大学 | Microwave oven adopting cylindrical oven chamber and taking helical antenna as radiator |
| CN105357790A (en) * | 2015-12-21 | 2016-02-24 | 电子科技大学 | Double-tube microwave oven adopting circularly polarized helical antennae as radiators |
| CN105392227B (en) * | 2015-12-21 | 2017-12-15 | 电子科技大学 | It is a kind of using micro-wave oven of the spiral antenna with circular polarization as radiator |
| CN105357790B (en) * | 2015-12-21 | 2018-01-12 | 电子科技大学 | A kind of two-tube micro-wave oven for making radiator using spiral antenna with circular polarization |
| CN105509108B (en) * | 2015-12-21 | 2018-01-12 | 电子科技大学 | A kind of micro-wave oven for using cylindrical chamber and making radiator with helical antenna |
| CN106329054A (en) * | 2016-08-29 | 2017-01-11 | 广东美的厨房电器制造有限公司 | Coupling device and microwave heating device |
| CN106329054B (en) * | 2016-08-29 | 2019-01-22 | 广东美的厨房电器制造有限公司 | Coupling device and microwave heating equipment |
| CN106858270A (en) * | 2017-02-27 | 2017-06-20 | 成都沃特塞恩电子技术有限公司 | Microwave thawing cavity and device |
| CN108567111A (en) * | 2017-03-14 | 2018-09-25 | 德国福维克控股公司 | The system for cooking at least one food |
| WO2023071686A1 (en) * | 2021-10-25 | 2023-05-04 | 青岛海尔电冰箱有限公司 | Heating apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002034013A1 (en) | 2002-04-25 |
| FR2815512A1 (en) | 2002-04-19 |
| FR2815512B1 (en) | 2008-06-06 |
| EP1329135A1 (en) | 2003-07-23 |
| CN100411494C (en) | 2008-08-13 |
| KR20030072340A (en) | 2003-09-13 |
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