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CN110056915B - Cooking utensil - Google Patents

Cooking utensil Download PDF

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Publication number
CN110056915B
CN110056915B CN201910293281.7A CN201910293281A CN110056915B CN 110056915 B CN110056915 B CN 110056915B CN 201910293281 A CN201910293281 A CN 201910293281A CN 110056915 B CN110056915 B CN 110056915B
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CN
China
Prior art keywords
microstrip antenna
cooking
cavity
antenna unit
cooking appliance
Prior art date
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Active
Application number
CN201910293281.7A
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Chinese (zh)
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CN110056915A (en
Inventor
陈宗龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Midea Group Co Ltd, Guangdong Midea Kitchen Appliances Manufacturing Co Ltd filed Critical Midea Group Co Ltd
Priority to CN201910293281.7A priority Critical patent/CN110056915B/en
Publication of CN110056915A publication Critical patent/CN110056915A/en
Priority to PCT/CN2019/120871 priority patent/WO2020207029A1/en
Application granted granted Critical
Publication of CN110056915B publication Critical patent/CN110056915B/en
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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
    • H05B6/642Cooling of the microwave components and related air circulation systems
    • 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
    • H05B6/72Radiators or antennas

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Electric Ovens (AREA)

Abstract

The invention discloses a cooking appliance, which comprises a box body, wherein a cooking cavity and a mounting cavity which are arranged at intervals are defined in the box body; the mounting cavity is positioned at the outer side of the cooking cavity, and the microwave generating device is arranged in the mounting cavity; the base plate is arranged in the mounting cavity, and the surface of one side of the base plate forms the inner wall of the cooking cavity; at least one microstrip antenna unit is arranged in the mounting cavity and connected with the microwave generating device to feed microwaves into the cooking cavity, and at least one part of the substrate is positioned between the microstrip antenna unit and the cooking cavity to separate the microstrip antenna unit from the cooking cavity. According to the cooking appliance provided by the embodiment of the invention, the microstrip antenna units are arranged on one side of the substrate, which is back to the cooking cavity, and microwaves are fed into the cooking cavity by utilizing the microstrip antenna units, so that the electromagnetic field in the cooking cavity is relatively uniformly distributed, the heating uniformity of food in the cooking cavity is further improved, the user experience is enhanced, and the integrated design structure is simple and easy to manufacture.

Description

Cooking utensil
Technical Field
The invention relates to the field of kitchen appliances, in particular to a cooking appliance.
Background
In a cooking appliance in the related art, for example, a microwave oven, microwaves are mainly emitted by a magnetron, and the microwaves are fed into a cooking cavity in a waveguide manner, because the feeding manner is single, electromagnetic field distribution in the cooking cavity is often uneven, which causes energy concentration in a partial region in the cooking cavity, and energy density in the partial region is low, thereby causing great difference in temperature of heated food, causing taste degradation of the food, and affecting user experience.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the present invention is to provide a cooking appliance that has a simple structure, is uniformly heated, and has a good user experience.
The cooking appliance comprises a box body, wherein a cooking cavity and a mounting cavity which are arranged at intervals are defined in the box body; the microwave generating device is arranged in the mounting cavity; the base plate is arranged in the mounting cavity, and the surface of one side of the base plate forms the inner wall of the cooking cavity; at least one microstrip antenna unit, at least one microstrip antenna unit locate the installation cavity and with microwave generating device links to each other in order to feed microwave into the cooking chamber, at least a part of base plate is located between microstrip antenna unit and the cooking chamber in order to keep apart microstrip antenna unit with the cooking chamber.
According to the cooking appliance provided by the embodiment of the invention, the microstrip antenna unit is arranged in the installation cavity, and microwaves are fed into the cooking cavity by the microstrip antenna unit, so that compared with a waveguide feeding mode adopted in the related technology, the electromagnetic field in the cooking cavity can be distributed relatively uniformly, the heating uniformity of food in the cooking cavity is further improved, the user experience is enhanced, the microstrip antenna unit is small in size, light in weight and easy to integrate, the uniformity can be improved, the structure is simple and easy to manufacture, in addition, the substrate is used for spacing the microstrip antenna unit from the cooking cavity, the microstrip antenna unit can be effectively protected, and the integral use reliability is improved.
According to some embodiments of the present invention, the at least one microstrip antenna unit is attached to a side of the substrate facing away from the cooking cavity, and a sum of cross-sectional areas of the at least one microstrip antenna unit is smaller than or equal to a cross-sectional area of the substrate.
According to some embodiments of the present invention, the at least one microstrip antenna element is integrated with the substrate in a unitary structure, and a sum of cross-sectional areas of the at least one microstrip antenna element is less than a cross-sectional area of the substrate.
According to some embodiments of the invention, the at least one microstrip antenna element is disposed inside the substrate.
According to some embodiments of the present invention, the number of the microstrip antenna units is plural, and the plural microstrip antenna units are disposed in the installation cavity and respectively connected to the microwave generating device to feed microwaves into the cooking cavity.
According to some embodiments of the invention, the microstrip antenna unit comprises: a microstrip dielectric substrate; and the antenna array elements are uniformly distributed on the microstrip medium substrate and are connected with the microwave generating device.
According to some examples of the invention, a plurality of the antenna elements are connected in parallel by a feeder, the feeder has a feed interface connected to the microwave generating device, and the distance between the feed interface and each antenna element is equal.
According to some examples of the invention, the antenna elements are two and the two antenna elements are symmetrically arranged, two ends of the feeder are respectively connected to the two antenna elements, and the feed interface is located at the midpoint of the feeder.
According to some examples of the present invention, the number of the antenna elements is four, the feeder includes a first feeder segment, a second feeder segment, and a common feeder segment, the first feeder segment and the second feeder segment have the same length, two ends of the common feeder segment are respectively connected to a midpoint of the first feeder segment and a midpoint of the second feeder segment, the feeder interface is located at the midpoint of the common feeder segment, and the four antenna elements are connected to two ends of the first feeder segment and two ends of the second feeder segment in a one-to-one correspondence manner.
According to some examples of the invention, the first feeder segment is arranged in parallel with the second feeder segment, the common feeder segment is disposed between the first feeder segment and the second feeder segment, and both ends of the common feeder segment are vertically connected to the first feeder segment and the second feeder segment, respectively.
According to some examples of the invention, a coaxial line backfeed is used between the microwave generating device and the feed interface.
According to some embodiments of the invention, the microwave generating device comprises a microwave generator and a power supply connected to the microwave generator, the microwave generator being connected to the microstrip antenna unit.
According to some examples of the invention, the cooking appliance further includes a control board provided to the case and connected to the microwave generator and the power supply, and a fan provided adjacent to the microwave generator and the power supply to dissipate heat of the microwave generator and the power supply.
According to some examples of the invention, at least one of the microstrip antenna elements is a tunable microstrip antenna element.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a cooking appliance according to some embodiments of the present invention;
FIG. 2 is a partial assembly view of a cooking appliance according to some embodiments of the present invention;
fig. 3 is a schematic view of the installation of a base plate and a microstrip antenna unit of a cooking appliance according to some embodiments of the present invention;
fig. 4 is a schematic structural view of a microstrip antenna unit of a cooking appliance according to some embodiments of the present invention;
fig. 5 is a schematic view of a cooking appliance according to some embodiments of the present invention.
Reference numerals:
a cooking appliance 100;
a case 10; a cooking chamber 11; a mounting cavity 12;
a substrate 20;
a microstrip antenna unit 30; an antenna element 31; a microstrip dielectric substrate 32;
a feed line 33; a first feeder segment 331; a second feeder segment 332; a common feeder segment 333; a feed interface 34;
a power supply 41; a fan 42; a microwave generator 43; a control panel 44.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A cooking appliance 100 according to an embodiment of the present invention will be described with reference to fig. 1 to 5, and the cooking appliance 100 may be a microwave oven, a heating box, or the like.
The cooking appliance 100 according to the embodiment of the present invention includes a cabinet 10, a microwave generating device, a base plate 20, and at least one microstrip antenna unit 30.
A cooking chamber 11 and a mounting chamber 12 are defined in the cabinet 10, the cooking chamber 11 and the mounting chamber 12 are spaced apart from each other, and the mounting chamber 12 is located at an outer side of the cooking chamber 11, and a microwave generating device is provided in the mounting chamber 12 for generating microwaves to heat food in the cooking chamber 11, for example, as shown in fig. 1, the mounting chamber 12 may be located at a side portion and a bottom portion of the cooking chamber 11, thereby facilitating component arrangement and securing a cooking space.
The substrate 20 may be disposed in the installation cavity 12 located at the bottom of the cooking cavity 11, one side surface of the substrate 20 facing the inside of the cooking cavity 11 may be formed as an inner wall of the cooking cavity 11, and the substrate 20 may be a black crystal glass plate, so as to facilitate the microstrip antenna unit 30 to transmit the microwave into the cooking cavity 11 through the substrate 20, and also provide a certain protection effect for the microstrip antenna unit 30, thereby preventing the food from polluting the components such as the microstrip antenna unit 30.
At least one microstrip antenna unit 30 is disposed in the installation cavity 12, and at least a portion of the substrate 20 is located between the microstrip antenna unit 30 and the cooking cavity 11, so that the microstrip antenna unit 30 can be spaced apart from the cooking cavity 11, and the substrate 20 is used to protect the microstrip antenna unit 30, for example, the microstrip antenna unit 30 can be disposed at a distance from the substrate 20, or can be attached to the substrate 20 or located inside the substrate 20, the microstrip antenna unit 30 is connected to a microwave generating device, so that the microwave generating device feeds microwaves into the microstrip antenna unit 30 through a cable or a waveguide, and then feeds the microwaves into the cooking cavity 11 through the microstrip antenna unit 30, compared with the conventional waveguide feeding method in the related art, the microwave feeding point can be increased through the microstrip antenna unit 30, so that the thermoelectric distribution in the cooking cavity 11 is relatively uniform, further, the problem of large temperature difference caused by uneven distribution of electromagnetic fields in the cooking cavity 11 due to waveguide feeding is avoided, and user experience is effectively improved. Meanwhile, since the microstrip antenna unit 30 has a small volume, a light weight, and is easily integrated, the structure of the cooking appliance 100 can be simplified, and the manufacturing cost can be reduced.
Therefore, according to the cooking appliance 100 of the embodiment of the present invention, the microstrip antenna unit 30 is disposed in the installation cavity 12, and the microstrip antenna unit 30 feeds microwaves into the cooking cavity 11, so that, compared with a waveguide feeding manner adopted in the related art, electromagnetic field distribution in the cooking cavity 11 is relatively uniform, thereby improving heating uniformity of food in the cooking cavity 11, and enhancing user experience, and the microstrip antenna unit 30 has a small volume, a light weight, and is easy to integrate, and can ensure a simple structure and easy manufacture while improving uniformity, and in addition, the substrate 20 is used to separate the microstrip antenna unit 30 from the cooking cavity 11, so that the microstrip antenna unit 30 can be effectively protected, and overall use reliability is improved.
As shown in fig. 1 and 2, according to some embodiments of the present invention, the microstrip antenna unit 30 is attached to a surface of the substrate 20 on a side facing away from the cooking cavity 11, for example, the microstrip antenna unit 30 is attached to a bottom wall of the substrate 20, and a sum of cross-sectional areas of the microstrip antenna units 30 is smaller than or equal to a cross-sectional area of the substrate 20, so that on one hand, the substrate 20 can be used to shield the microstrip antenna unit 30, thereby providing a protection effect for the components such as the microstrip antenna unit 30, and on the other hand, microwave feed points of the microstrip antenna unit 30 can emit microwaves into the cooking cavity 11, thereby enhancing uniformity of electromagnetic field distribution in the cooking cavity 11.
As shown in fig. 3, according to other embodiments of the present invention, the microstrip antenna unit 30 and the substrate 20 may be integrated into a unitary structure, and optionally, for example, as shown in fig. 3, the microstrip antenna unit 30 is integrated inside the substrate 20, and the sum of the cross-sectional areas of the microstrip antenna unit 30 is less than or equal to the cross-sectional area of the substrate 20, thereby not only enhancing the protection effect of the substrate 20 on the microstrip antenna unit 30 and other components, but also further reducing the volume, simplifying the assembly process, and reducing the manufacturing cost due to the unitary structure of the two.
According to some embodiments of the present invention, there may be a plurality of microstrip antenna units 30, and a plurality of microstrip antenna units 30 are disposed in the mounting cavity 12, for example, the plurality of microstrip antenna units 30 are uniformly distributed on a side of the substrate 20 facing away from the cooking cavity 11 and spaced apart from the substrate 20, and may also be uniformly and directly attached to the bottom wall of the substrate 20, or uniformly disposed inside the substrate 20, so that by disposing a plurality of microstrip antenna units 30 uniformly arranged in the substrate 20, a microwave feeding point may be further increased, and uniformity of electromagnetic field distribution in the cooking cavity 11 may be further improved.
As shown in fig. 4, according to some embodiments of the present invention, the microstrip antenna unit 30 mainly includes a microstrip dielectric substrate 32 and a plurality of antenna elements 31, the plurality of antenna elements 31 are uniformly distributed on the microstrip dielectric substrate 32, and the plurality of antenna elements 31 are connected to the microwave generating device, for example, in the example shown in fig. 4, the plurality of antenna elements 31 may be uniformly distributed on the microstrip dielectric substrate 32 in an array, so as to ensure that the microstrip antenna unit 30 has a plurality of uniformly distributed microwave feeding points, improve uniformity of hot spot distribution in the cooking cavity 11, and improve reliability of the cooking appliance 100, thereby preventing the cooking appliance 100 from failing to work when one of the antenna elements 31 fails.
As shown in fig. 4, in a further example of the present invention, in order to simplify the structure of the feeding network and improve the reliability of the microstrip antenna unit 30, the plurality of antenna elements 31 are connected by the feeding line 33 and fed in parallel, so that when one of the antenna elements 31 fails, it can be ensured that the remaining antenna elements 31 can still work normally, thereby improving the reliability of the cooking appliance 100, and meanwhile, the feeding line 33 among the plurality of antenna elements is provided with the feeding interface 34, and the feeding interface 34 can be connected to the microwave generating device to feed the antenna elements 31.
Furthermore, in order to ensure that the antenna elements can obtain in-phase excitation, so that the input power of the feeding interface 34 can be equally distributed to the antenna elements 31 to improve the electromagnetic field distribution uniformity in the cooking cavity 11, the lengths of the feeding lines 33 between the feeding interface 34 and each antenna element 31 are equal.
In some examples of the present invention, there are two antenna elements 31, the two antenna elements 31 are symmetrically arranged, two ends of the feeder 33 are respectively connected to the center lines of two opposite edges of the two antenna elements 31, and the feeding interface 34 is located at the middle point of the feeder 33, so that the distances from the feeding interface 34 to any one of the antenna elements 31 are equal, thereby ensuring that each antenna element 31 can obtain an average input power.
As shown in fig. 4, in other examples of the present invention, the antenna elements 31 are four and are arranged in a matrix, the feed line 33 mainly includes a first feed line segment 331, a second feed line segment 332, and a common feed line segment 333, the lengths of the first feed line segment 331 and the second feed line segment 332 are substantially equal, the four antenna elements 31 are disposed at two ends of the first feed line segment 331 and two ends of the second feed line segment 332 in a one-to-one correspondence manner, and two ends of the common feed line segment 333 are respectively connected to a midpoint of the first feed line segment 331 and a midpoint of the second feed line segment 332, so as to ensure that distances from the feed interface 34 located at the midpoint of the common feed line segment 333 to any one of the antenna elements 31 are equal, and thus the input power of the feed interface 34 can be evenly distributed to each antenna element 31 to improve the uniformity of the electromagnetic field distribution in the cooking cavity 11.
In a further example of the invention, as shown in fig. 4, the first feed section 331 and the second feed section 332 are arranged in parallel, and the common feed section 333 is provided between the first feed section 331 and the second feed section 332 and is connected perpendicularly to the first feed section 331 and the second feed section 332, thereby making the entire feed line 33 substantially i-shaped, which facilitates the feeding network.
In some examples of the present invention, a coaxial line is used for back feeding between the microwave generating device and the feeding interface 34, so that the feeding network structure can be further simplified and the electromagnetic field distribution uniformity in the cooking cavity 11 can be improved.
As shown in fig. 1, in some embodiments of the present invention, the microwave generating device mainly comprises a microwave generator 43 and a power supply 41, the power supply 41 is connected to the microwave generator 43, and the microwave generator 43 and the microstrip antenna unit 30 can be connected by a waveguide or a cable, so that the microwaves generated by the microstrip generator are fed into the cooking cavity 11 through the microstrip antenna unit 30, thereby improving the distribution uniformity of the electromagnetic waves in the cooking cavity 11.
As shown in fig. 1, in a further example of the present invention, the microwave generating apparatus further includes a control board 44 and a fan 42, the control board 44 is disposed on the case 10, and the control board 44 is connected to the microwave generator 43 and the power supply 41 to control the microwave generator 43, and the fan 42 is disposed adjacent to the microwave generator 43 and the power supply 41, so that heat can be dissipated from the microwave generator 43 and the power supply 41, thereby improving safety and reliability of the cooking appliance 100.
In some embodiments of the present invention, in order to further improve the adjustability of the cooking appliance 100, at least one of the microstrip antenna units 30 may be a tunable microstrip antenna unit 30, so that the uniformity of distribution of hot spots in the cooking cavity 11 may be improved by feeding the microstrip antenna unit 30, and meanwhile, frequency-selective heating may be performed on corresponding food, so as to achieve different effects of centralized heating or distributed heating, and enhance user experience.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more.
In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
Other configurations and operations of the cooking appliance 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A cooking appliance, comprising:
the cooking device comprises a box body, a cooking cavity and a mounting cavity, wherein the cooking cavity and the mounting cavity are arranged in the box body at intervals;
the microwave generating device is arranged in the mounting cavity;
the base plate is arranged in the mounting cavity, and the surface of one side of the base plate forms the inner wall of the cooking cavity;
at least one microstrip antenna unit, which is arranged in the installation cavity and connected with the microwave generating device to feed microwaves into the cooking cavity, wherein at least one part of the substrate is positioned between the microstrip antenna unit and the cooking cavity to separate the microstrip antenna unit from the cooking cavity;
the microstrip antenna unit is attached to one side of the substrate, which faces away from the cooking cavity, and the sum of the cross sectional areas of the microstrip antenna units is smaller than or equal to that of the substrate.
2. The cooking appliance of claim 1, wherein the at least one microstrip antenna unit is integrated with the substrate as a unitary structure, and a sum of cross-sectional areas of the at least one microstrip antenna unit is equal to or less than a cross-sectional area of the substrate.
3. The cooking appliance of claim 2, wherein the at least one microstrip antenna element is disposed inside the base plate.
4. The cooking appliance according to claim 1, wherein the number of the microstrip antenna units is plural, and the plural microstrip antenna units are disposed in the installation cavity and respectively connected to the microwave generating device to feed microwaves into the cooking cavity.
5. The cooking appliance according to any one of claims 1 to 4, wherein the microstrip antenna unit comprises:
a microstrip dielectric substrate;
and the antenna array elements are uniformly distributed on the microstrip medium substrate and are connected with the microwave generating device.
6. The cooking appliance according to claim 5, wherein a plurality of the antenna elements are connected in parallel by a feeder line, the feeder line has a feeding interface connected to the microwave generating device, and the distance between the feeding interface and each microstrip antenna element is equal.
7. The cooking appliance according to claim 6, wherein the number of the antenna elements is two, and the two antenna elements are symmetrically arranged, two ends of the feeder line are respectively connected with the two antenna elements, and the feeding interface is located at a midpoint of the feeder line.
8. The cooking appliance of claim 6, wherein the number of microstrip antenna elements is four, the feed line comprises a first feed line segment, a second feed line segment, and a common feed line segment, the first feed line segment and the second feed line segment have equal lengths, two ends of the common feed line segment are respectively connected to a midpoint of the first feed line segment and a midpoint of the second feed line segment, the feed interface is located at the midpoint of the common feed line segment, and four antenna elements are connected to two ends of the first feed line segment and two ends of the second feed line segment in a one-to-one correspondence.
9. The cooking appliance of claim 8, wherein the first feeder segment is arranged in parallel with the second feeder segment, the common feeder segment is disposed between the first feeder segment and the second feeder segment, and both ends of the common feeder segment are perpendicularly connected to the first feeder segment and the second feeder segment, respectively.
10. The cooking appliance according to claim 6, wherein a coaxial line feedback feed is used between the microwave generating device and the feed interface.
11. The cooking appliance of claim 1, wherein the microwave generating means comprises a microwave generator and a power supply connected to the microwave generator, the microwave generator being connected to the microstrip antenna unit.
12. The cooking appliance of claim 11, further comprising a control board disposed in the housing and connected to the microwave generator and the power source, and a fan disposed adjacent to the microwave generator and the power source for dissipating heat from the microwave generator and the power source.
13. The cooking appliance of claim 1, wherein at least one of the microstrip antenna units is a tunable microstrip antenna unit.
CN201910293281.7A 2019-04-12 2019-04-12 Cooking utensil Active CN110056915B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201910293281.7A CN110056915B (en) 2019-04-12 2019-04-12 Cooking utensil
PCT/CN2019/120871 WO2020207029A1 (en) 2019-04-12 2019-11-26 Cooking appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910293281.7A CN110056915B (en) 2019-04-12 2019-04-12 Cooking utensil

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CN110056915A CN110056915A (en) 2019-07-26
CN110056915B true CN110056915B (en) 2021-03-19

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CN110056915B (en) * 2019-04-12 2021-03-19 广东美的厨房电器制造有限公司 Cooking utensil
CN111031620B (en) * 2019-11-12 2021-03-23 四川大学 Method and device for realizing microwave zone heating by using single solid-state source frequency modulation
CN114302525B (en) * 2021-12-22 2024-12-06 广东美的白色家电技术创新中心有限公司 A microwave oven

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WO2020207029A1 (en) 2020-10-15

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