CN106322452A - Microwave oven no-load detection method and equipment and microwave oven - Google Patents
Microwave oven no-load detection method and equipment and microwave oven Download PDFInfo
- Publication number
- CN106322452A CN106322452A CN201610798165.7A CN201610798165A CN106322452A CN 106322452 A CN106322452 A CN 106322452A CN 201610798165 A CN201610798165 A CN 201610798165A CN 106322452 A CN106322452 A CN 106322452A
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- microwave oven
- microwave
- power
- unloaded
- threshold value
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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
- H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
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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
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electric Ovens (AREA)
Abstract
The embodiment of the invention provides a microwave oven no-load detection method and equipment and a microwave oven containing the microwave oven no-load detection equipment and belongs to the technical field of microwave. The microwave oven no-load detection method comprises the steps of detecting incident power of a microwave source of the microwave oven; detecting reflective power of the microwave source of the microwave oven; and according to the incident power and the reflective power, determining whether the microwave oven is in the no-load state or not. According to the microwave oven no-load detection method and equipment and the microwave oven, detection is directly conducted on incident and reflective microwave signals, the absorptive amount of the loaded microwave signals is judged according to the incident and reflective microwave signals, and thus a no-load detection result can be more precise.
Description
Technical field
The present invention relates to microwave technical field, in particular it relates to a kind of microwave oven zero load detection method, microwave oven zero load inspection
Measurement equipment and comprise this microwave oven zero load detection equipment microwave oven.
Background technology
Microwave is a kind of electromagnetic wave, and microwave oven is the modernization cooking kitchen range of a kind of microwave heating of food.Microwave oven by
The part composition such as power supply, magnetron, control circuit and cooking cavity.Power supply provides about 4000 volts of high pressure, magnetron to magnetron
Under power supply encourages, continuously generate microwave, then through Wave guide system, be coupled in cooking cavity.Near the import department of cooking cavity,
There is a rotatable agitator, because agitator is the metal of fan shape, after rotating, microwave is had all directions
Reflection, it is possible to microwave energy is evenly distributed in cooking cavity, thus add hot food.The power bracket one of microwave oven
As be 500～1000 watts.
The most existing microwave ovens is to be changed by the temperature in sensor test chamber, humidity or weight, then judges
Go out in cavity and whether have load.Such as, Chinese patent CN103542437B discloses a kind of preventing idle load microwave oven and detection side thereof
Method, preventing idle load microwave oven includes furnace chamber and is installed in the temperature-sensing device of furnace chamber inner top, and temperature-sensing device includes metal
Probe and the critesistor being located in metal probe.Microwave oven operation process is sentenced by the program by achieving based on temperature
Disconnected.
Present inventor finds during realizing the present invention, and the such scheme of prior art is only capable of to be sentenced indirectly
Breaking and whether have load in microwave oven, at some in particular cases, testing result is the most not accurate enough.
Summary of the invention
The purpose of the embodiment of the present invention be to provide a kind of microwave oven zero load detection method, microwave oven zero load detection equipment, with
And comprising the microwave oven of this microwave oven zero load detection equipment, microwave signal that is incident and that reflect directly can be detected, make by it
Obtain unloaded testing result more accurate.
To achieve these goals, the embodiment of the present invention provides a kind of microwave oven zero load detection method, and the method includes: inspection
Survey the incident power of the microwave source of described microwave oven；Detect the reflection power of the microwave source of described microwave oven；And according to described
Incident power and reflection power, determine that described microwave oven is the most unloaded.
Optionally, described microwave oven comprises one or more microwave source.
Optionally, the incident power at the one or more microwave source be all higher than incident power threshold value and one or
The reflection power sum of multiple microwave sources, more than in the case of reflection power threshold value, determines that described microwave oven is unloaded.
Optionally, in running order at described microwave oven and be unsatisfactory for the incident power of the one or more microwave source
In the case of being all higher than incident power threshold value, send the signal of microwave oven fault.
Optionally, the incident power at the one or more microwave source be all higher than incident power threshold value, one or
The reflection power sum of multiple microwave sources is more than more than reflection power threshold value and more than the persistent period of described reflection power threshold value
In the case of the scheduled time, determine that described microwave oven is unloaded.
Correspondingly, the present invention also provides for a kind of unloaded detection equipment for microwave oven, and this equipment includes: incident power is examined
Survey device, for detecting the incident power of the microwave source of described microwave oven；Reflection power detection device, is used for detecting described microwave
The reflection power of the microwave source of stove；And judgment means, for according to described incident power and reflection power, determine described microwave
Stove is the most unloaded.
Optionally, described microwave oven comprises one or more microwave source.
Optionally, the incident power at the one or more microwave source be all higher than incident power threshold value and one or
The reflection power sum of multiple microwave sources, more than in the case of reflection power threshold value, determines that described microwave oven is unloaded.
Optionally, this zero load detection equipment also comprises: alarm device, in running order and not at described microwave oven
Meet in the case of the incident power of the one or more microwave source is all higher than incident power threshold value, send microwave oven fault
Signal.
Optionally, this zero load detection equipment also comprises: timer, for reflection power sum is more than described reflection power
The persistent period of threshold value carries out timing；
Described judgment means is all higher than incident power threshold value, institute for the incident power at the one or more microwave source
State the reflection power sum of one or more microwave source more than reflection power threshold value and continuing more than described reflection power threshold value
Time, more than in the case of the scheduled time, determines that described microwave oven is unloaded.
Correspondingly, the present invention also provides for a kind of microwave oven, and this microwave oven comprises above-mentioned unloaded detection equipment.
By technique scheme, after microwave oven starts, can constantly carry out microwave source incident power and reflection power
Detection, can judge there are how many microwave powers by the load absorption in microwave oven according to incident power and reflection power.
If most power is all reflected back in microwave source, then can determine that as microwave oven unloaded；And if reflect micro-
Wave power is the least, then illustrate that most microwave power has been supported absorption, then there is load in can determine that microwave oven.The present invention
It is the most unloaded that direct basis microwave source incident power and reflection power detect microwave oven, and unloaded testing result can be made the most accurate
Really.
Further feature and the advantage of the embodiment of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide and is further appreciated by the embodiment of the present invention, and constitutes a part for description, with under
The detailed description of the invention in face is used for explaining the embodiment of the present invention together, but is not intended that the restriction to the embodiment of the present invention.Attached
In figure:
The flow chart of the microwave oven zero load detection method that Fig. 1 provides for one embodiment of the invention；
The flow chart of the microwave oven zero load detection method that Fig. 2 provides for another embodiment of the present invention；
The flow chart of the microwave oven zero load detection method that Fig. 3 provides for yet another embodiment of the invention；
The structural representation of the microwave oven zero load detection equipment that Fig. 4 provides for one embodiment of the invention；
The structural representation of the microwave oven zero load detection equipment that Fig. 5 provides for another embodiment of the present invention；
The structural representation of the microwave oven zero load detection equipment that Fig. 6 provides for yet another embodiment of the invention；And
The structural representation of the microwave oven that Fig. 7 provides for one embodiment of the invention.
Description of reference numerals
10 incident power detection device 20 reflection power detection devices
30 judgment means 40 alarm sets
50 timer 100 microwave detection equipments
110 control centre 120 microwave sources
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the embodiment of the present invention is described in detail.It should be appreciated that this
Detailed description of the invention described by place is merely to illustrate and explains the embodiment of the present invention, is not limited to the embodiment of the present invention.
The flow chart of the microwave oven zero load detection method that Fig. 1 provides for one embodiment of the invention.As it is shown in figure 1, the present invention
One embodiment provides a kind of microwave oven zero load detection method, and the method includes:
Step S110, detects the incident power of the microwave source of described microwave oven；
Step S120, detects the reflection power of the microwave source of described microwave oven；And
Step S130, according to described incident power and reflection power, determines that described microwave oven is the most unloaded.
Specifically, after microwave oven starts, can constantly carry out the detection of microwave source incident power and reflection power, can
Judge there are how many microwave powers by the load absorption in microwave oven according to incident power and reflection power.If it is most of
Power be all reflected back in microwave source (a small amount of microwave power may be absorbed by cavity and air), then can determine that as microwave
Stove is unloaded；And if the microwave power that reflects is the least, then illustrating that most microwave power has been supported absorption, then can sentence
Load is there is in determining microwave oven.
The flow chart of the microwave oven zero load detection method that Fig. 2 provides for another embodiment of the present invention.As in figure 2 it is shown, this is another
The microwave oven zero load detection method that one embodiment provides includes:
Step S210, detects the incident power of the microwave source of described microwave oven；
Step S220, it is judged that whether the incident power of microwave source is more than incident power threshold value；When detecting that incident power is big
After default incident threshold value, i.e. explanation has certain microwave power to enter in cavity, can continue executing with step S230.For
For microwave oven, it can have one or more microwave source and produce the microwave signal between 2.4GHz～2.5GHz, this step
The judgement of S220 for each microwave source, can i.e. judge whether the incident power of each microwave source can be more than incident power threshold
Value, in the case of only the incident power at each microwave source all can be more than incident power threshold value, just explanation microwave source work
Normally, otherwise explanation microwave source cannot normally work.
Step S230, the reflection power of detection microwave source；
Step S240, it is judged that whether the reflection power of microwave source is more than reflection power threshold value；In reflection power more than reflection
In the case of power threshold, illustrate that microwave power is absorbed seldom, may be non-loaded in microwave oven, then can perform step
S250, it is determined that microwave oven is unloaded.For when comprising multiple microwave source in microwave oven, this step S240 can be for judging
Whether having the reflection power sum of microwave source more than reflection power threshold value, the reflection power sum at all microwave sources is more than reflection
In the case of power threshold, step S250 can be performed, it is determined that microwave oven is unloaded.
Step S250, it is determined that microwave oven is unloaded.
It should be noted that the scheme described by the above-mentioned situation for microwave oven with multiple microwave source is not necessary
, in some cases, in microwave oven, the heats of different loads (such as, bread, milk) is needed, possible each
The microwave power that microwave source is radiated is different, and the most all of microwave source all must send out more than described incidence
The microwave of power threshold, less than incident power threshold value, the microwave power that the most a certain microwave source is launched just shows that it occurs
Fault, can make some according to practical situation and adjust.
The flow chart of the microwave oven zero load detection method that Fig. 3 provides for yet another embodiment of the invention.As it is shown on figure 3, this
The microwave oven zero load detection method that bright another embodiment provides includes:
Step S310, the incident power of all microwave sources of detection microwave oven and reflection power.
Step S320, it may be judged whether the incident power of all microwave sources is all higher than incident power threshold value Pthfwd；All micro-
The incident power of wave source is all higher than incident power threshold value PthfwdIn the case of, illustrate that all microwave sources are working properly, have certain
Microwave power enters in microwave oven cavity, performs next step S330, otherwise illustrates that some microwave sources may normal work
Make, perform step S321, point out fault.
Step S321, points out microwave oven fault.
Step S330, it may be judged whether the reflection power sum of all microwave sources is more than reflection power threshold value Pthrev；All
The reflection power sum of microwave source is more than reflection power threshold value PthrevIn the case of, illustrate that microwave power is absorbed seldom, micro-
May be non-loaded in ripple stove, then can perform step S340；If the reflection power sum of all microwave sources is not more than reflection power
Threshold value Pthrev, then explanation microwave power is absorbed, and is likely to have load, can perform step S351 in microwave oven.
Step S340, starts timer and starts timing, t=t+1；The time t that this timer is remembered is all microwave sources
Reflection power sum more than reflection power threshold value PthrevPersistent period.
Step S350, it is judged that whether the time that described timer is remembered is more than time threshold Tth；If it is, execution step
S360, it is determined that described microwave oven is unloaded, otherwise continues executing with above-mentioned steps S310-S330.
Step S351, timer resets, t=0；
Step S360, determines that microwave oven is unloaded.
The structural representation of the microwave oven zero load detection equipment that Fig. 4 provides for one embodiment of the invention.As shown in Figure 4, originally
The microwave oven zero load detection equipment that inventing an embodiment provides includes: incident power detection device 10, is used for detecting described microwave
The incident power of the microwave source of stove；Reflection power detection device 20, for detecting the reflection power of the microwave source of described microwave oven；
And judgment means 30, for according to described incident power and reflection power, determine that described microwave oven is the most unloaded.Wherein said
Incident power detection device 10 and reflection power detection device 20 can be by devices such as the detector diodes that is installed on microwave source
Realize.
Wherein, described microwave oven can comprise one or more microwave source.Incident merit at the one or more microwave source
Rate is all higher than the reflection power sum feelings more than reflection power threshold value of incident power threshold value and the one or more microwave source
Under condition, determine that described microwave oven is unloaded.
The structural representation of the microwave oven zero load detection equipment that Fig. 5 provides for another embodiment of the present invention.As it is shown in figure 5,
Being with the difference of embodiment illustrated in fig. 4, the microwave oven zero load detection equipment that another embodiment of the present invention provides also includes
Also comprise: alarm device 40, be used in running order at described microwave oven and be unsatisfactory for the one or more microwave source
In the case of incident power is all higher than incident power threshold value, send the signal of microwave oven fault.
The structural representation of the microwave oven zero load detection equipment that Fig. 6 provides for yet another embodiment of the invention.As shown in Figure 6,
Being with the difference of embodiment illustrated in fig. 5, the microwave oven zero load detection equipment that yet another embodiment of the invention provides also includes:
Timer 50, for carrying out timing to reflection power sum more than the persistent period of described reflection power threshold value.Described judgement dress
Put 30 for being all higher than incident power threshold value, the one or more microwave in the incident power of the one or more microwave source
The reflection power sum in source is more than the scheduled time more than reflection power threshold value and more than the persistent period of described reflection power threshold value
In the case of, determine that described microwave oven is unloaded.
The detail of microwave oven zero load for the present invention detection equipment and benefit, see above-mentioned empty for microwave oven
Carry the description of detection method, repeat no more in this.
The structural representation of the microwave oven that Fig. 7 provides for one embodiment of the invention.As described in Figure 7, one embodiment of the invention
The microwave oven provided comprises: control centre 110, microwave source 120 and above-mentioned unloaded detection equipment 110.
After microwave oven starts, first control centre 110 output order control microwave source 120 works together, unloaded detection
Incident power and the reflection power of microwave source is constantly detected by equipment 100, and to incident power, the detection number of reflection power
According to judging, in a period of time, after detecting that incident power is more than default incident threshold value, i.e. explanation has certain microwave
Power enters in cavity.Then reflection power data are judged, when the reflection power sum of all microwave sources is anti-more than preset
When penetrating threshold value, i.e. illustrate that entering into the microwave energy overwhelming majority in cavity reflects back into again (small part microwave energy in microwave source
Amount is absorbed by cavity and air), it is defeated that this situation can be judged as that zero load, control centre 110 can control to turn off microwave source 120
Go out；When reflection power data are the least, it is load.
By the solution of the present invention, unloaded damage microwave heating equipment can be avoided；Reduce what user was caused by unloaded operation
Danger, such as radiation increase etc.；Avoid unloaded waste electric energy.
The optional embodiment of example of the present invention is described in detail above in association with accompanying drawing, but, the embodiment of the present invention does not limit
Detail in above-mentioned embodiment, in the technology concept of the embodiment of the present invention, can be to the embodiment of the present invention
Technical scheme carry out multiple simple variant, these simple variant belong to the protection domain of the embodiment of the present invention.
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention, at not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the embodiment of the present invention pair
Various possible compound modes illustrate the most separately.
It will be appreciated by those skilled in the art that all or part of step realizing in above-described embodiment method can be by
Program instructs relevant hardware and completes, and this program is stored in a storage medium, including some instructions with so that one
Individual (can be single-chip microcomputer, chip etc.) or processor (processor) perform the whole of method described in each embodiment of the application
Or part steps.And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
Additionally, combination in any can also be carried out between the various different embodiment of the embodiment of the present invention, as long as it is not
Running counter to the thought of the embodiment of the present invention, it should be considered as embodiment of the present invention disclosure of that equally.
Claims (11)
1. a microwave oven zero load detection method, it is characterised in that the method includes:
Detect the incident power of the microwave source of described microwave oven；
Detect the reflection power of the microwave source of described microwave oven；And
According to described incident power and reflection power, determine that described microwave oven is the most unloaded.
Unloaded detection method the most according to claim 1, it is characterised in that described microwave oven comprises one or more microwave
Source.
Unloaded detection method the most according to claim 2, it is characterised in that in the incidence of the one or more microwave source
Power is all higher than the reflection power sum of incident power threshold value and the one or more microwave source more than reflection power threshold value
In the case of, determine that described microwave oven is unloaded.
Unloaded detection method the most according to claim 2, it is characterised in that in running order at described microwave oven and not
Meet in the case of the incident power of the one or more microwave source is all higher than incident power threshold value, send microwave oven fault
Signal.
Unloaded detection method the most according to claim 2, it is characterised in that in the incidence of the one or more microwave source
Power be all higher than incident power threshold value, the one or more microwave source reflection power sum more than reflection power threshold value and
In the case of being more than the scheduled time more than the persistent period of described reflection power threshold value, determine that described microwave oven is unloaded.
6. the unloaded detection equipment for microwave oven, it is characterised in that this equipment includes:
Incident power detection device, for detecting the incident power of the microwave source of described microwave oven；
Reflection power detection device, for detecting the reflection power of the microwave source of described microwave oven；And
Judgment means, for according to described incident power and reflection power, determines that described microwave oven is the most unloaded.
Unloaded detection equipment the most according to claim 6, it is characterised in that described microwave oven comprises one or more microwave
Source.
Unloaded detection equipment the most according to claim 7, it is characterised in that in the incidence of the one or more microwave source
Power is all higher than the reflection power sum of incident power threshold value and the one or more microwave source more than reflection power threshold value
In the case of, determine that described microwave oven is unloaded.
Unloaded detection equipment the most according to claim 7, it is characterised in that this zero load detection equipment also comprises:
Alarm device, is used for incident merit that is in running order at described microwave oven and that be unsatisfactory for the one or more microwave source
In the case of rate is all higher than incident power threshold value, send the signal of microwave oven fault.
Unloaded detection equipment the most according to claim 7, it is characterised in that this zero load detection equipment also comprises:
Timer, for carrying out timing to reflection power sum more than the persistent period of described reflection power threshold value；
Described judgment means for the incident power of the one or more microwave source be all higher than incident power threshold value, described one
The reflection power sum of individual or multiple microwave source is more than reflection power threshold value and more than persistent period of described reflection power threshold value
In the case of the scheduled time, determine that described microwave oven is unloaded.
11. 1 kinds of microwave ovens, it is characterised in that this microwave oven comprises according to described in claim any one of claim 6-10
Unloaded detection equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798165.7A CN106322452B (en) | 2016-08-31 | 2016-08-31 | Micro-wave oven zero load detection method, equipment and micro-wave oven |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798165.7A CN106322452B (en) | 2016-08-31 | 2016-08-31 | Micro-wave oven zero load detection method, equipment and micro-wave oven |
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| CN106322452A true CN106322452A (en) | 2017-01-11 |
| CN106322452B CN106322452B (en) | 2019-09-06 |
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| CN201610798165.7A Active CN106322452B (en) | 2016-08-31 | 2016-08-31 | Micro-wave oven zero load detection method, equipment and micro-wave oven |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559903A (en) * | 2017-09-21 | 2018-01-09 | 广东美的厨房电器制造有限公司 | Judge unloaded method, system, computer equipment, storage medium and micro-wave oven |
| CN107703803A (en) * | 2017-10-02 | 2018-02-16 | 广东美的厨房电器制造有限公司 | Load detection method, device and computer-readable recording medium |
| CN108333585A (en) * | 2018-01-31 | 2018-07-27 | 广东美的厨房电器制造有限公司 | Radio frequency detection device, detection method and micro-wave oven |
| CN108709204A (en) * | 2018-06-12 | 2018-10-26 | 上海纯米电子科技有限公司 | A kind of empty pot detection method of electromagnetic oven |
| CN111237823A (en) * | 2018-11-28 | 2020-06-05 | 九阳股份有限公司 | Heating control method of microwave oven and microwave oven |
| CN111836418A (en) * | 2019-04-23 | 2020-10-27 | 九阳股份有限公司 | Heating control method of semiconductor microwave cooking equipment and cooking equipment |
| CN113124429A (en) * | 2019-12-31 | 2021-07-16 | 广东美的白色家电技术创新中心有限公司 | Microwave oven and method for detecting load information in microwave oven |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107559903A (en) * | 2017-09-21 | 2018-01-09 | 广东美的厨房电器制造有限公司 | Judge unloaded method, system, computer equipment, storage medium and micro-wave oven |
| CN107559903B (en) * | 2017-09-21 | 2019-10-01 | 广东美的厨房电器制造有限公司 | Judge unloaded method, system, computer equipment, storage medium and micro-wave oven |
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| CN108333585A (en) * | 2018-01-31 | 2018-07-27 | 广东美的厨房电器制造有限公司 | Radio frequency detection device, detection method and micro-wave oven |
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| CN108709204A (en) * | 2018-06-12 | 2018-10-26 | 上海纯米电子科技有限公司 | A kind of empty pot detection method of electromagnetic oven |
| CN111237823B (en) * | 2018-11-28 | 2022-04-05 | 九阳股份有限公司 | Heating control method of microwave oven and microwave oven |
| CN111237823A (en) * | 2018-11-28 | 2020-06-05 | 九阳股份有限公司 | Heating control method of microwave oven and microwave oven |
| CN111836418A (en) * | 2019-04-23 | 2020-10-27 | 九阳股份有限公司 | Heating control method of semiconductor microwave cooking equipment and cooking equipment |
| CN111836418B (en) * | 2019-04-23 | 2023-02-21 | 九阳股份有限公司 | Heating control method of semiconductor microwave cooking equipment and cooking equipment |
| CN113124429A (en) * | 2019-12-31 | 2021-07-16 | 广东美的白色家电技术创新中心有限公司 | Microwave oven and method for detecting load information in microwave oven |
| CN113124429B (en) * | 2019-12-31 | 2023-10-31 | 广东美的白色家电技术创新中心有限公司 | Microwave oven and method for detecting load information in microwave oven |
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