CN110081475B - Control method and system of microwave oven and microwave oven - Google Patents
Control method and system of microwave oven and microwave oven Download PDFInfo
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- CN110081475B CN110081475B CN201910365202.9A CN201910365202A CN110081475B CN 110081475 B CN110081475 B CN 110081475B CN 201910365202 A CN201910365202 A CN 201910365202A CN 110081475 B CN110081475 B CN 110081475B
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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
- H05B6/66—Circuits
- H05B6/68—Circuits for monitoring or control
- H05B6/687—Circuits for monitoring or control for cooking
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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
- H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
- H05B2206/04—Heating using microwaves
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Abstract
The application provides a control method and system of a microwave oven and the microwave oven. The control method of the microwave oven comprises the following steps: detecting the standing wave state of the microwave; determining a plurality of standing wave values corresponding to a plurality of angles in a one-to-one manner according to the standing wave state; and adjusting the residence time of the rotating to each angle according to a plurality of standing wave values which are in one-to-one correspondence with the plurality of angles. The utility model provides a microwave oven's control method can be according to the size of standing wave value, adjusts the dwell time under every angle, like this, can effectively reduce and heat food in the angle that reflected power is high, and more time stops to heat food in the angle that reflected power is low to can promote microwave oven's heating efficiency.
Description
Technical Field
The application relates to the technical field of kitchen appliances, in particular to a control method and a control system of a microwave oven and the microwave oven.
Background
In the related art microwave oven using the magnetron, as shown in fig. 7, microwave power emitted from the magnetron is conducted into a cavity of the microwave through a waveguide to heat food and the like. From the magnetron point of view, it is usually the case that a particular load (food) is close to a matched state, which is not matched under most load conditions, and the mismatch causes the formation of standing waves, i.e. the reflection of microwave power, which cannot be effectively used for heating, so the reflection of microwave power causes the heating efficiency to be reduced. In addition, for a general non-circularly symmetric load, in the process of rotating along with the turntable on the turntable, the impedance of the load changes along with the rotation from the view point of a magnetron, and the standing wave value and reflection also change. Similarly, in the case of a flat microwave oven using an antenna and a stirrer, in the rotation process of the antenna and the stirrer, the impedance changes with the rotation, the standing wave value and reflection also change, and the heating efficiency is low at certain angles, as viewed from the magnetron.
Disclosure of Invention
The present application is directed to solving at least one of the above problems.
To this end, an object of the present application is to provide a control method of a microwave oven. The method can adjust the stay time at each angle according to the size of the standing wave value, thus effectively reducing the heating of food at the angle with high reflected power, and staying more time at the angle with low reflected power to heat the food, thereby improving the heating efficiency of the microwave oven.
A second object of the present application is to provide a control system of a microwave oven.
A third object of the present application is to provide a microwave oven.
A fourth object of the present application is to propose a non-transitory computer-readable storage medium.
A fifth object of the present application is to propose a kitchen appliance.
In order to achieve the above object, a first aspect of the present application discloses a control method of a microwave oven, comprising the steps of: detecting the standing wave state of the microwave; determining a plurality of standing wave values corresponding to a plurality of angles in a one-to-one manner according to the standing wave state; and adjusting the residence time of the rotating to each angle according to a plurality of standing wave values which are in one-to-one correspondence with the plurality of angles.
According to the control method of the microwave oven, the stay time under each angle can be adjusted according to the size of the standing wave value, so that the food can be effectively heated at the angle with high reflected power, more time stays at the angle with low reflected power to heat the food, and the heating efficiency of the microwave oven can be improved.
In some examples, the adjusting the dwell time at each angle of rotation according to the plurality of standing wave values in one-to-one correspondence with the plurality of angles includes: the larger the standing wave value at the current angle, the shorter the dwell time for rotation to that angle.
In some examples, the detecting a standing wave state of the microwave includes: detecting the power of microwaves in the waveguide, wherein the power of the microwaves comprises forward power and reverse power; and determining the standing wave state of the microwave according to the power of the microwave.
A second aspect of the present application discloses a control system of a microwave oven, comprising: the detection module is used for detecting the standing wave state of the microwave; and the control module is used for determining a plurality of standing wave values which are in one-to-one correspondence with a plurality of angles according to the standing wave state, and adjusting the retention time when the rotating shaft rotates to each angle according to the plurality of standing wave values which are in one-to-one correspondence with the plurality of angles.
According to the control system of microwave oven of this application, can be according to the size of standing wave value, adjust the dwell time of every angle, like this, can effectively reduce and heat food in the angle that reflected power is high, more time stops to heat food in the angle that reflected power is low to can promote microwave oven's heating efficiency.
In some examples, the control module is configured to rotate the stationary member to the current angle for a shorter dwell time as the stationary wave value at the angle is larger.
In some examples, the detection module is configured to detect power of microwaves within the waveguide, wherein the power of the microwaves includes forward power and reverse power, and determine a standing wave state of the microwaves according to the power of the microwaves.
A third aspect of the present application discloses a microwave oven including: a control system for a microwave oven according to the second aspect of the present invention.
A fourth aspect of the present application discloses a non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that a control program of a microwave oven is stored thereon, which when executed by a processor implements the control method of the microwave oven according to the first aspect described above.
An embodiment of a fifth aspect of the present application discloses a kitchen appliance, which includes a memory, a processor, and a control program of a microwave oven stored in the memory and operable on the processor, wherein the processor implements the control method of the microwave oven according to the first aspect when executing the control program of the microwave oven.
Additional aspects and advantages of the present application 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 present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application 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 flowchart of a control method of a microwave oven according to one embodiment of the present application;
FIG. 2 is a schematic view of a microwave oven according to one embodiment of the present application;
FIGS. 3-5 are graphs showing power reflection coefficients of the microwave oven at 0 to 360 degrees rotation angles under different loads, respectively;
fig. 6 is a block diagram of a control system of a microwave oven according to an embodiment of the present application;
fig. 7 is a schematic view of a related art microwave oven.
Detailed Description
Reference will now be made in detail to embodiments of the present application, 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 drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
A control method and system of a microwave oven and a microwave oven according to embodiments of the present application are described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a control method of a microwave oven according to an embodiment of the present application. As shown in fig. 1, a control method of a microwave oven according to one embodiment of the present application includes the steps of:
s101: and detecting the standing wave state of the microwave.
This can be achieved, for example, by: the method comprises the steps of firstly detecting the power of microwaves in a waveguide, wherein the power of the microwaves comprises forward power and reverse power, and then determining the standing wave state of the microwaves according to the power of the microwaves.
Specifically, as shown in fig. 2, for example, a flat-panel microwave oven, a magnetron 1 emits microwave power, and the microwave power is transmitted to a microwave oven case through a waveguide 2 to heat food (load, i.e., load), wherein the microwave oven of the embodiment of the present invention includes a motor 3 with a controllable rotation speed, such as a stepping motor, so as to adjust the rotation speed of a stirring blade 4, which may be an antenna.
In a specific example, the forward power and the reverse power of the microwave can be detected by a semiconductor directional coupler disposed on the waveguide, thereby determining the standing wave state.
S102: and determining a plurality of standing wave values which correspond to the plurality of angles in a one-to-one mode according to the standing wave state.
Namely: according to the forward power and the reverse power of the microwave, the power reflection of the microwave can be calculated, namely: magnitude of standing wave value. The larger the reflected power is, the larger the standing wave value is, and the smaller the reflected power is, the smaller the standing wave value is.
Because the load is usually asymmetric, due to the change of impedance, when the stirring blade and the like rotate to different angles in the rotating process, the reverse power of the microwave changes, namely: there is a fluctuation in the reflected power. Therefore, at different angles, there is a variation in the standing wave value. According to the embodiment of the application, a plurality of standing wave values corresponding to a plurality of angles in a one-to-one mode can be determined according to the standing wave state.
The plurality of angles may be changed by, for example, 1 degree as one angle, or may be changed by 2 degrees, 3 degrees, 4 degrees, 5 degrees, or the like as one angle.
S103: and adjusting the residence time of the rotating to each angle according to a plurality of standing wave values which are in one-to-one correspondence with the plurality of angles.
Since the larger the standing wave value is, namely: the greater the reflected power, which is not effectively used for heating the food, i.e. the angle at which the hotter efficiency is lower, and therefore the rotation can be made rapidly through this angle, i.e.: the dwell time is shorter at this angle, whereas the smaller the standing wave value, i.e.: the smaller the reflected power, the higher the heating efficiency.
Therefore, in the embodiment of the present application, adjusting the dwell time rotated to each angle according to a plurality of standing wave values in one-to-one correspondence with a plurality of angles includes: the larger the standing wave value at the current angle, the shorter the dwell time for rotation to that angle. Namely: the dwell time at angles where the reflected power is small is longer than at angles where the reflected power is large, for example: such as: the standing wave value VSWR1 corresponds to the stay time of T1, the standing wave value VSWR2 corresponds to the stay time of T2, and for any VSWR2 and VSWR1, the value is T2 and T1. Thus, the heating efficiency of the food can be effectively improved.
It is understood that if the heating efficiency is improved to the maximum, the heating efficiency can be maximized by fixing the angle at which the standing wave value is minimized.
As shown in fig. 3-5, is a graph of power reflection coefficient at antenna rotation angles of 0 to 360 degrees.
Wherein fig. 3 shows the power reflection coefficient-f of the microwave oven at the rotation angle of 0 to 360 degrees being 2.458GHz, wherein the load is 150g of water. Fig. 4 shows the power reflection coefficient-f of 2.458GHz at 0 to 360 degree rotation of the microwave oven, loaded with 100g of water. Fig. 5 shows the power reflection coefficient-f at 2.458GHz at 0 to 360 degree rotation of the microwave oven, loaded with 500g of frozen meat.
According to the control method of the microwave oven, the stay time of rotating to each angle can be adjusted according to the size of the standing wave value, so that the food can be effectively heated at the angle with high reflected power, more time stays at the angle with low reflected power to heat the food, and the heating efficiency of the microwave oven can be improved.
Naturally, the smaller the reflected power, the higher the heating efficiency, but to avoid that the effective heating power is too high and causes the food to burn, so in other examples of the application, it is also possible to switch over quickly if the reflected power is too small, although the smaller the reflected power, the higher the heating efficiency, but to avoid possible burning, so it is also possible to pass through the angle quickly.
Specifically, the heating is performed for a relatively long time at an angle with a proper standing wave value, so that the heating efficiency of the microwave oven can be effectively improved, and the food scorching caused by too high heating efficiency can be avoided. Namely: more time stay and heat food at the moderate angle of standing wave value size to can improve the heating homogeneity of food, when guaranteeing heating efficiency to a certain extent, avoid food to burn.
Fig. 6 is a block diagram of a control system of a microwave oven according to an embodiment of the present application. As shown in fig. 6 in conjunction with fig. 2, a control system 600 of a microwave oven according to an embodiment of the present application includes: a detection module 610 and a control module 620.
The detecting module 610 is used for detecting a standing wave state of the microwave. The control module 6230 is configured to determine a plurality of standing wave values corresponding to a plurality of angles according to the standing wave state, and adjust the staying time when the rotating object rotates to each angle according to the plurality of standing wave values corresponding to the plurality of angles.
In one embodiment of the present application, the control module 620 is configured to rotate to a shorter dwell time at a current angle when the standing wave value at the angle is larger.
According to the control system of microwave oven of this application embodiment, can be according to the size of standing wave value, adjust and rotate to the dwell time that every angle is little, like this, can effectively reduce and heat food in the angle that reflected power is high, more time dwell heat food in the angle that reflected power is low to can promote microwave oven's heating efficiency.
According to the embodiment of the invention, the food can be heated at an angle with a moderate standing wave value for more time, so that the heating uniformity of the food can be improved, the heating efficiency is ensured to a certain extent, and the food is prevented from being burnt.
In one embodiment of the present application, the detecting module 610 is configured to detect power of a microwave in a waveguide, wherein the power of the microwave includes a forward power and a reverse power, and determine a standing wave state of the microwave according to the power of the microwave.
It should be noted that a specific implementation manner of the control system of the microwave oven in the embodiment of the present application is similar to a specific implementation manner of the control method of the microwave oven in the embodiment of the present application, and please refer to the description of the method part specifically, and no further description is given for reducing redundancy.
Further, an embodiment of the present application discloses a microwave oven including: a control system of a microwave oven according to any one of the above embodiments. This microwave oven can be according to the size of standing wave value, adjusts the rotational speed when rotatory to every angle, like this, can effectively reduce and heat food on the angle that reflected power is high, and more time stops to heat food on the angle that reflected power is low to can promote microwave oven's heating efficiency.
Further, an embodiment of the present application discloses a non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program is stored thereon, and when executed by a processor, the control program of the microwave oven implements the control method of the microwave oven according to the first aspect.
Further, an embodiment of the present application discloses a kitchen appliance, which includes a memory, a processor, and a control program of a microwave oven stored in the memory and operable on the processor, wherein the processor implements the control method of the microwave oven according to the first aspect when executing the control program of the microwave oven. Kitchen appliance is microwave oven for example, and this microwave oven can be according to the size of standing wave value, adjusts the rotational speed when rotatory to every angle, like this, can effectively reduce and heat food on the angle that reflected power is high, and more time stops to heat food on the angle that reflected power is low to can promote microwave oven's heating efficiency.
The non-transitory computer readable storage medium described above may take any combination of one or more computer readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read Only Memory (ROM), an Erasable Programmable Read Only Memory (EPROM) or flash Memory, an optical fiber, a portable compact disc Read Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of Network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
While embodiments of the present application 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 application, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A control method of a microwave oven comprises the steps of detecting the standing wave state of microwave, and is characterized by also comprising the following steps:
determining a plurality of standing wave values corresponding to a plurality of angles in a one-to-one manner according to the standing wave state;
and adjusting the residence time of the rotating to each angle according to a plurality of standing wave values which are in one-to-one correspondence with the plurality of angles.
2. The method of claim 1, wherein the adjusting the staying time at each angle of rotation according to the standing wave values in one-to-one correspondence to the angles comprises:
the larger the standing wave value at the current angle, the shorter the dwell time for rotation to that angle.
3. The method of claim 1 or 2, wherein the detecting the standing wave state of the microwave includes:
detecting the power of microwaves in the waveguide, wherein the power of the microwaves comprises forward power and reverse power;
and determining the standing wave state of the microwave according to the power of the microwave.
4. A control system of a microwave oven includes a detection module for detecting a standing wave state of a microwave, and is characterized by further comprising:
and the control module is used for determining a plurality of standing wave values which are in one-to-one correspondence with a plurality of angles according to the standing wave state, and adjusting the retention time when the rotating shaft rotates to each angle according to the plurality of standing wave values which are in one-to-one correspondence with the plurality of angles.
5. The control system of claim 4, wherein the control module is configured to rotate to a shorter dwell time at a current angle when the standing wave value at the angle is larger.
6. The control system of claim 4 or 5, wherein the detection module is configured to detect the power of the microwave in the waveguide, wherein the power of the microwave includes a forward power and a reverse power, and determine the standing wave state of the microwave according to the power of the microwave.
7. A microwave oven, comprising: a control system of a microwave oven as claimed in any one of claims 4 to 6.
8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that a control program of a microwave oven is stored thereon, which when executed by a processor implements the control method of the microwave oven according to any one of claims 1 to 3.
9. A kitchen appliance comprising a memory, a processor and a control program for a microwave oven stored in the memory and operable on the processor, the processor implementing the control method of the microwave oven according to any one of claims 1 to 3 when executing the control program for the microwave oven.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910365202.9A CN110081475B (en) | 2019-04-30 | 2019-04-30 | Control method and system of microwave oven and microwave oven |
| PCT/CN2019/122020 WO2020220668A1 (en) | 2019-04-30 | 2019-11-29 | Microwave oven control method and system, and microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910365202.9A CN110081475B (en) | 2019-04-30 | 2019-04-30 | Control method and system of microwave oven and microwave oven |
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| CN110081475A CN110081475A (en) | 2019-08-02 |
| CN110081475B true CN110081475B (en) | 2020-09-01 |
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| CN110081475B (en) * | 2019-04-30 | 2020-09-01 | 广东美的厨房电器制造有限公司 | Control method and system of microwave oven and microwave oven |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4507530A (en) * | 1983-08-15 | 1985-03-26 | General Electric Company | Automatic defrost sensing arrangement for microwave oven |
| CA1333194C (en) * | 1988-06-14 | 1994-11-22 | Taisuke Morino | High-frequency heating apparatus |
| EP1096833B1 (en) * | 1998-07-08 | 2013-04-17 | Panasonic Corporation | Variable-impedance unit, microwave device using the unit, and microwave heater |
| JP6273598B2 (en) * | 2012-08-01 | 2018-02-07 | パナソニックＩｐマネジメント株式会社 | Microwave heating device |
| JP2014072117A (en) * | 2012-10-01 | 2014-04-21 | Panasonic Corp | Microwave heating device |
| JP2016213099A (en) * | 2015-05-12 | 2016-12-15 | 日立アプライアンス株式会社 | Heating cooker |
| CN105114993B (en) * | 2015-08-06 | 2017-07-28 | 广东美的厨房电器制造有限公司 | Microwave heating equipment and method for heating and controlling |
| JP6874756B2 (en) * | 2016-02-17 | 2021-05-19 | パナソニック株式会社 | Microwave heating device |
| CN106322453B (en) * | 2016-09-12 | 2018-06-08 | 广东美的厨房电器制造有限公司 | For the method for heating and controlling, heating control devices and micro-wave oven of micro-wave oven |
| CN110081475B (en) * | 2019-04-30 | 2020-09-01 | 广东美的厨房电器制造有限公司 | Control method and system of microwave oven and microwave oven |
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| WO2020220668A1 (en) | 2020-11-05 |
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