CN104968061B - The startup control device of micro-wave oven and micro-wave oven variable-frequency power sources and method - Google Patents
The startup control device of micro-wave oven and micro-wave oven variable-frequency power sources and method Download PDFInfo
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- CN104968061B CN104968061B CN201510427507.XA CN201510427507A CN104968061B CN 104968061 B CN104968061 B CN 104968061B CN 201510427507 A CN201510427507 A CN 201510427507A CN 104968061 B CN104968061 B CN 104968061B
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Abstract
The invention discloses a kind of startup control device of micro-wave oven variable-frequency power sources, including：Variable-frequency power sources；Anode of magnetron current detection module, for detecting the anode current of magnetron；Control module, for controlling variable-frequency power sources to enter the soft start stage after electricity in variable-frequency power sources, and control variable-frequency power sources enters warm-up phase after the soft start stage completes, and judge whether warm-up phase completes according to the anode current of magnetron, and control variable-frequency power sources enters normal operating phase after warm-up phase is completed.By the anode current of the magnetron of detection, the device can accurately judge whether magnetron preheats completes, and enters normal operating phase so as to control variable-frequency power sources.The invention also discloses a kind of micro-wave oven and a kind of startup control method of micro-wave oven variable-frequency power sources.
Description
Technical field
The present invention relates to micro-wave oven technical field, more particularly to a kind of startup control device of micro-wave oven variable-frequency power sources,
Plant micro-wave oven and a kind of startup control method of micro-wave oven variable-frequency power sources.
Background technology
At present, frequency-conversion microwave oven because with fuselage is light, the low advantage of the low and power consumption of noise and be widely used.
When frequency-conversion microwave oven normally runs, the filament of magnetron is heated to 2100K or so through 3.3V power supply and starts transmitting
Electronics, the electronics of transmitting make wheel pendular motion in the presence of anode high voltage and magnetic circuit, produce 2450MHz's in anode cavity
Microwave, in launching to the heating cavity of micro-wave oven through energy follower.
But, when the variable-frequency power sources in frequency-conversion microwave oven just goes up electricity, the filament of magnetron is in cold conditions, does not possess transmitting
The ability of electronics.If filament is not fully warmed-up, and now the anode voltage of magnetron is too high, then can increase answering for magnetron
Power, consequently, it is possible to cause magnetron punch through damage.Meanwhile, when magnetron is instantaneously opened and is shaken, larger dash current can be produced and
Destroy the working condition of transformer primary side single tube LC or half-bridge resonance circuit.
In correlation technique, judge whether magnetron preheating completes by the primary current size of detection transformer, but
Due to the discreteness that there are a lot of elements between primary and secondary side so that the primary current of detection is inaccurate, therefore it is difficult to accurately
Judge that magnetron is default whether to complete.If judging that preheating terminates too early, anode voltage can be caused too high, so as to cause magnetic control
Pipe and the damage of other devices；If judging that preheating terminates too late, toggle speed can be caused excessively slow.Therefore, how accurately to sentence
Whether disconnected magnetron preheating completes, and becomes a problem demanding prompt solution.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
For this purpose, it is an object of the present invention to proposing a kind of startup control device of micro-wave oven variable-frequency power sources, Neng Goutong
Cross detection magnetron anode current come accurately judge magnetron preheating whether complete.
Second object of the present invention is to propose a kind of micro-wave oven.
Third object of the present invention is to propose a kind of startup control method of micro-wave oven variable-frequency power sources.
To achieve these goals, the startup control device of the micro-wave oven variable-frequency power sources of first aspect present invention embodiment,
Including：Variable-frequency power sources；Anode of magnetron current detection module, for detecting the anode current of magnetron；Control module, for
The variable-frequency power sources is controlled to enter the soft start stage in the variable-frequency power sources after electricity, and after the soft start stage completes
Control the variable-frequency power sources that warm-up phase is entered, and judge whether the warm-up phase is complete according to the anode current of the magnetron
Become, and after the warm-up phase is completed, control the variable-frequency power sources to enter normal operating phase.
The startup control device of micro-wave oven variable-frequency power sources according to embodiments of the present invention, by anode of magnetron current detecting
The anode current of module detection magnetron, after electricity in variable-frequency power sources, control variable-frequency power sources enters soft start rank to control module
Section, and control variable-frequency power sources enters warm-up phase after the soft start stage completes, and sentenced according to the anode current of magnetron
Whether disconnected warm-up phase completes, and control variable-frequency power sources enters normal operating phase after warm-up phase is completed.So as to the dress
Put and can accurately judge that by the anode current of detection magnetron magnetron preheating is after variable-frequency power sources enters warm-up phase
No complete, effectively prevent the damage because judging too early magnetron that warm-up phase completes and cause and other devices, improve
The reliability of product, meanwhile, effectively prevent slow because judging the toggle speed that warm-up phase completes and cause too late, meet quick
The requirement of heating, improves Consumer's Experience.
In addition, can also be with following additional skill according to the control device that starts of the above-mentioned micro-wave oven variable-frequency power sources of the present invention
Art feature：
In one embodiment of the invention, when the anode current of the magnetron is more than predetermined threshold value, judge described
Warm-up phase is completed.
In one embodiment of the invention, the anode of magnetron current detection module is specifically included：First resistor, institute
The one end for stating first resistor is connected with the anode of the magnetron；Second resistance, one end of the second resistance and described first
The other end of resistance is connected, the other end ground connection of the second resistance, wherein, has between the first resistor and second resistance
First node；3rd resistor, one end of the 3rd resistor are connected with the first node, and the other end of the 3rd resistor is
The output end of the anode of magnetron current detection module.
In one embodiment of the invention, the startup control device of above-mentioned micro-wave oven variable-frequency power sources, also includes：Upper
Machine, the host computer are connected with the anode of magnetron current detection module, and the host computer passes through order wire by the magnetic control
The anode current of pipe is sent to the control module.
In one embodiment of the invention, the startup control device of above-mentioned micro-wave oven variable-frequency power sources, also includes：Connection
Optocoupler between the anode of magnetron current detection module and the control module, the anode of magnetron current detecting mould
Block is sent the anode current of the magnetron to the control module by the optocoupler.
To achieve these goals, the micro-wave oven of second aspect present invention embodiment includes first aspect present invention embodiment
Micro-wave oven variable-frequency power sources startup control device.
Micro-wave oven according to embodiments of the present invention, after electricity in variable-frequency power sources, control variable-frequency power sources enters soft start rank
Section, and control variable-frequency power sources entrance warm-up phase the soft start stage completes after, and according to the anode current of magnetron come
Judge whether warm-up phase completes, and control variable-frequency power sources enters normal operating phase after warm-up phase is completed.So as to can
With after variable-frequency power sources enters warm-up phase, by detecting the anode current of magnetron accurately judging whether magnetron has preheated
Become, the damage being prevented effectively from because judging too early magnetron that warm-up phase completes and cause and other devices, reliability improve,
Meanwhile, the requirement of satisfaction quick heating slow because judging the toggle speed that warm-up phase is completed and caused too late is effectively prevent, is carried
High Consumer's Experience.
To achieve these goals, the startup control method of the micro-wave oven variable-frequency power sources of third aspect present invention embodiment,
Including：After electricity in variable-frequency power sources, the variable-frequency power sources is controlled to enter the soft start stage；It is completed in the soft start stage
Afterwards, the variable-frequency power sources is controlled to enter warm-up phase；Whether anode current according to the magnetron judges the warm-up phase
Complete；After judging that the warm-up phase is completed, the variable-frequency power sources is controlled to enter normal operating phase.
In addition, can also have following additional skill according to the startup control method of the above-mentioned micro-wave oven variable-frequency power sources of the present invention
Art feature：
In one embodiment of the invention, when the anode current of the magnetron is more than predetermined threshold value, judge described
Warm-up phase is completed.
In one embodiment of the invention, the anode current of the magnetron is fed back by host computer.
In one embodiment of the invention, by the anode current of magnetron described in opto-coupled feedback.
The startup control method of micro-wave oven variable-frequency power sources according to embodiments of the present invention, after electricity in variable-frequency power sources, control
Variable-frequency power sources processed enters the soft start stage, and control variable-frequency power sources enters warm-up phase after the soft start stage completes, and
Judge whether warm-up phase completes according to the anode current of magnetron, and control variable-frequency power sources is entered after warm-up phase is completed
Enter normal operating phase.So as to the method can be after variable-frequency power sources enters warm-up phase, by detecting the anode electricity of magnetron
Stream is completed accurately judging whether magnetron preheats, and effectively prevent because judging magnetron that warm-up phase is completed and caused too early
And the damage of other devices, the reliability of product is improve, meanwhile, effectively prevent and lead because judging warm-up phase to complete too late
The toggle speed of cause is slow, meets the requirement of quick heating, improves Consumer's Experience.
The advantage of the aspect that the present invention is added will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Description of the drawings
Fig. 1 is the block diagram of the startup control device of micro-wave oven variable-frequency power sources according to an embodiment of the invention；
Fig. 2 is the circuit diagram of the startup control device of micro-wave oven variable-frequency power sources according to an embodiment of the invention；And
Fig. 3 is the flow chart of the startup control method of micro-wave oven variable-frequency power sources according to an embodiment of the invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Below with reference to the accompanying drawings startup control device and the method for micro-wave oven variable-frequency power sources according to embodiments of the present invention are described
And micro-wave oven.
In order to accurately judge whether the warm-up phase of magnetron completes, embodiments of the invention propose a kind of microwave
The startup control device of stove variable-frequency power sources.
Fig. 1 is that the square frame of the startup control device of micro-wave oven variable-frequency power sources according to an embodiment of the invention is intended to.Such as
Shown in Fig. 1, the startup control device of the micro-wave oven variable-frequency power sources includes：Anode of magnetron current detection module 100, control module
200 and variable-frequency power sources 300.
Specifically, anode of magnetron current detection module 100 is used for detecting the anode current of magnetron.
In one embodiment of the invention, as shown in Fig. 2 anode of magnetron current detection module 100 specifically may include：
First resistor R1, second resistance R2 and 3rd resistor R3, wherein, one end of first resistor R1 is connected with the anode of magnetron MGT,
One end of second resistance R2 is connected with the other end of first resistor R1, the other end ground connection GND of second resistance R2, wherein, first
With first node J1 between resistance R1 and second resistance R2, one end of 3rd resistor R3 is connected with first node J1, the 3rd electricity
The other end of resistance R3 is output end IB of anode of magnetron current detection module 100.
As shown in Fig. 2 a secondary windings of transformer T is connected to voltage-multiplying circuit, the high pressure after multiplication of voltage, one end connect
To the anode of magnetron MGT, the other end is connected with one end of second resistance R2, is connected to magnetron after second resistance R2
MGT.Can form certain voltage drop when the anode voltage (- 4000V) of magnetron MGT being supplied through second resistance R2, the voltage
The size of drop is proportional to the size of current for flowing through anode of magnetron, obtains by being sampled to the voltage drop by 3rd resistor R3
Obtain the anode current of magnetron MGT.
Control module 200 is used for controlling variable-frequency power sources 300 to enter the soft start stage in variable-frequency power sources 300 after electricity, and
After the soft start stage completes, control variable-frequency power sources 300 enters warm-up phase, and is judged according to the anode current of magnetron pre-
Whether the hot stage completes, and control variable-frequency power sources 300 enters normal operating phase after warm-up phase is completed.Wherein, soft open
The dynamic stage can be demarcated according to actual conditions, and for example, the soft start stage can be a civil power cycle.
In one embodiment of the invention, when the anode current of magnetron is more than predetermined threshold value, judge warm-up phase
Complete.Wherein, predetermined threshold value can be demarcated according to actual conditions.
It is understood that as in magnetron initial power-on, the filament of magnetron is in cold conditions, and magnetron is not opened
Shake, now the anode current of magnetron is zero, and after to the magnetron preheated one-section time, the anode current of magnetron gradually increases
Plus, when the anode current of magnetron reaches predetermined threshold value, judge that the warm-up phase of magnetron is completed.For example, shown in Fig. 2
In embodiment, when the corresponding voltage of the anode current of the magnetron of detection is more than 0.3V, show anode of magnetron current detecting
The anode current of the magnetron that module 100 is detected is more than predetermined threshold value, now judges that warm-up phase is completed.
In one embodiment of the invention, the startup control device of above-mentioned micro-wave oven variable-frequency power sources may also include upper
Machine, host computer are connected with anode of magnetron current detection module 100, and the anode current of magnetron is sent out by host computer by order wire
Deliver to control module 200.
That is, after the anode current that anode of magnetron current detection module 100 detects current magnetron, ought
The anode current of front magnetron is sent to host computer, and host computer is sent the anode current of current magnetron to control by order wire
Molding block 200, is judged by the anode current of 200 pairs of current magnetrons of control module, to obtain the work at present of magnetron
State, and variable-frequency power sources is controlled according to the current operating state of magnetron, so as to realize the accurate control to magnetron,
Such as reduce the power output of magnetron or control magnetron quits work.
It is understood that receiving the current magnetron of the transmission of anode of magnetron current detection module 100 in host computer
Anode current after, the anode current that host computer can be first to current magnetron judges, to obtain the current work of magnetron
Make state, and when needing magnetron to quit work, by controlling control module 200 so that magnetron quits work.
In another embodiment of the present invention, the startup control device of above-mentioned micro-wave oven variable-frequency power sources may also include：
The optocoupler being connected between anode of magnetron current detection module 100 and control module 200, anode of magnetron current detection module
100 are sent the anode current of magnetron to control module 200 by optocoupler.
That is, after the anode current that anode of magnetron current detection module 100 detects current magnetron, passing through
Optocoupler is sent to control module 200, control module 200 by judging to the anode current of magnetron, to obtain magnetron
Current operating state, and variable-frequency power sources is controlled according to the current operating state of magnetron, so as to realize to magnetron
Accurate control, such as reduce the power output of magnetron or control magnetron quit work.
In embodiments of the present invention, either host computer or optocoupler, are all responsible for sending the anode current of magnetron
To control module 200, can accurately judge whether magnetron preheating completes so as to control module 200, be prevented effectively from because sentencing too early
Magnetron and the damage of other devices that disconnected warm-up phase is completed and caused, improve product reliability, meanwhile, be prevented effectively from because
Judge the slow problem of toggle speed that warm-up phase is completed and caused too late, meet the requirement of quick heating, improve user's body
Test.
According to a specific example of the present invention, in frequency-conversion microwave oven initial power-on, control module 200 controls variable-frequency electric
Source 300 enters the soft start stage, and such as control variable-frequency power sources 300 is started working with fixing frequency, also, in variable-frequency power sources 300
Switching tube dutycycle be less than 10%, after the completion of the 300 soft start stage of variable-frequency power sources, control module 200 control variable-frequency electric
Source 300 enters warm-up phase, and now, control module 200 is stepped up the dutycycle of switching tube, to improve the anode electricity of magnetron
Pressure, and the maximum duty cycle of switching tube is calculated according to transformer primary side supply voltage, account for when the dutycycle of switching tube reaches maximum
Empty than when, control module 200 maintains the maximum duty cycle.Anode of magnetron current detection module 100 detects the anode of magnetron
Electric current, and sent to control module 200 by host computer or optocoupler, control module 200 is receiving the anode current of magnetron
After judged, when magnetron anode current more than predetermined threshold value when, control module 200 judges that the filament pre-heating of magnetron is complete
Become, control module 200 controls frequency-conversion microwave oven to enter the normal power operation phase.
The startup control device of micro-wave oven variable-frequency power sources according to embodiments of the present invention, by anode of magnetron current detecting
The anode current of module detection magnetron, after electricity in variable-frequency power sources, control variable-frequency power sources enters soft start rank to control module
Section, and control variable-frequency power sources enters warm-up phase after the soft start stage completes, and sentenced according to the anode current of magnetron
Whether disconnected warm-up phase completes, and control variable-frequency power sources enters normal operating phase after warm-up phase is completed.So as to the dress
Put and can accurately judge that by the anode current of detection magnetron magnetron preheating is after variable-frequency power sources enters warm-up phase
No complete, effectively prevent the damage because judging too early magnetron that warm-up phase completes and cause and other devices, improve
The reliability of product, meanwhile, effectively prevent slow because judging the toggle speed that warm-up phase completes and cause too late, meet quick
The requirement of heating, improves Consumer's Experience.Additionally, also effectively prevent magnetron shaking and producing larger impact electricity because instantaneously opening
The working condition of stream impact resonance circuit.
In order to realize above-described embodiment, the present invention also proposes a kind of micro-wave oven.
The micro-wave oven of the embodiment of the present invention includes the startup control of the micro-wave oven variable-frequency power sources of any of the above-described embodiment of the present invention
Device processed.
Micro-wave oven according to embodiments of the present invention, after electricity in variable-frequency power sources, control variable-frequency power sources enters soft start rank
Section, and control variable-frequency power sources entrance warm-up phase the soft start stage completes after, and according to the anode current of magnetron come
Judge whether warm-up phase completes, and control variable-frequency power sources enters normal operating phase after warm-up phase is completed.So as to can
With after variable-frequency power sources enters warm-up phase, whether complete accurately to judge that magnetron is preheated by the anode current for detecting magnetron
Become, the damage being prevented effectively from because judging too early magnetron that warm-up phase completes and cause and other devices, reliability improve,
Meanwhile, the requirement of satisfaction quick heating slow because judging the toggle speed that warm-up phase is completed and caused too late is effectively prevent, is carried
High Consumer's Experience.Additionally, also effectively prevent magnetron shaking and producing larger dash current impact resonance electricity because instantaneously opening
The working condition on road.
In order to realize above-described embodiment, the present invention also proposes a kind of startup control method of micro-wave oven variable-frequency power sources.
Fig. 3 is the flow chart of the startup control method according to one micro-wave oven variable-frequency power sources of the present invention.As shown in figure 3, should
The startup control method of micro-wave oven variable-frequency power sources includes：
S101, after electricity in variable-frequency power sources, control variable-frequency power sources enters the soft start stage.For example, in the soft start stage,
Variable-frequency power sources can be controlled to start working with fixing frequency, and control the dutycycle of variable-frequency power sources breaker in middle pipe less than 10%,
Wherein, the soft start stage can be a civil power cycle.
S102, after the soft start stage completes, control variable-frequency power sources enters warm-up phase.For example, it is possible to by progressively
Increase the dutycycle of switching tube, to improve the anode voltage of magnetron, when the dutycycle of switching tube reaches maximum duty cycle,
Maintain the maximum duty cycle operation.
S103, the anode current according to magnetron judge whether warm-up phase completes.
S104, after judging that warm-up phase is completed, control variable-frequency power sources enters normal operating phase.
According to a specific example of the present invention, as shown in Fig. 2 a secondary windings of transformer T is connected to a times piezoelectricity
Road, the high pressure after multiplication of voltage, one end are connected to the anode of magnetron MGT, and the other end is connected with one end of second resistance R2, through
Magnetron MGT is connected to after two resistance R2.The meeting when the anode voltage (- 4000V) of magnetron MGT is supplied through second resistance R2
Certain voltage drop is formed, the size of the voltage drop is proportional to the size of current for flowing through anode of magnetron, by 3rd resistor R3
The anode current of magnetron MGT is obtained to the voltage drop by being sampled.Thus, it is possible to accurately judge the preheating rank of magnetron
Whether section completes.
In one embodiment of the invention, when the anode current of magnetron is more than predetermined threshold value, judge warm-up phase
Complete.Wherein, predetermined threshold value can be demarcated according to actual conditions.
It is understood that as in magnetron initial power-on, the filament of magnetron is in cold conditions, and magnetron is not opened
Shake, now the anode current of magnetron is zero, and after to the magnetron preheated one-section time, the anode current of magnetron gradually increases
Plus, when the anode current of magnetron reaches predetermined threshold value, judge that the warm-up phase of magnetron is completed.For example, shown in Fig. 2
In embodiment, when the corresponding voltage of the anode current of the magnetron of detection is more than 0.3V, show that the anode current of magnetron is big
In predetermined threshold value, now judge that warm-up phase is completed.
In one embodiment of the invention, the anode current of magnetron is fed back by host computer.
Specifically, the anode current of magnetron can be detected by the anode of magnetron current detection module shown in Fig. 2,
After the anode current for detecting current magnetron, the anode current of current magnetron is sent to host computer, host computer is permissible
The anode current of current magnetron is sent to control module by order wire, by anode electricity of the control module to current magnetron
Stream is judged, to obtain the current operating state of magnetron, and variable-frequency power sources is entered according to the current operating state of magnetron
Row control, so as to realize the accurate control to magnetron, such as reduces the power output of magnetron or control magnetron quits work.
It is understood that receiving the sun of the current magnetron of anode of magnetron current detection module transmission in host computer
After electrode current, the anode current that host computer can be first to current magnetron judges, to obtain the work at present shape of magnetron
State, and when needing magnetron to quit work, by controlling control module so that magnetron quits work.
In another embodiment of the present invention, by the anode current of opto-coupled feedback magnetron.
Specifically, after the anode current that anode of magnetron current detection module detects current magnetron, by light
Coupling is sent to control module, control module by judging to the anode current of magnetron, to obtain the current work of magnetron
Make state, and variable-frequency power sources is controlled according to the current operating state of magnetron, so as to realize the accurate control to magnetron
System, such as reduces the power output of magnetron or control magnetron quits work.
In embodiments of the present invention, either host computer or optocoupler, are all responsible for sending the anode current of magnetron
To control module, can accurately judge whether magnetron preheating completes so as to control module, be prevented effectively from because judging too early to preheat
Magnetron and the damage of other devices that stage completes and causes, improve product reliability, meanwhile, it is prevented effectively from because sentencing too late
The slow problem of toggle speed that disconnected warm-up phase is completed and caused, meets the requirement of quick heating, improves Consumer's Experience.
According to a specific example of the present invention, in frequency-conversion microwave oven initial power-on, control module controls variable-frequency power sources
The soft start stage is entered, such as control variable-frequency power sources is started working with fixing frequency, also, the accounting for of the switching tube in variable-frequency power sources
It is empty that than being less than 10%, after the completion of the variable-frequency power sources soft start stage, control module control variable-frequency power sources enters warm-up phase, this
When, control module is stepped up the dutycycle of switching tube, to improve the anode voltage of magnetron, and is powered according to transformer primary side
Voltage calculates the maximum duty cycle of switching tube, and when the dutycycle of switching tube reaches maximum duty cycle, control module maintains this most
Big space rate.Anode of magnetron current detection module detection magnetron anode current, and by host computer or optocoupler send to
Control module, control module are judged after the anode current for receiving magnetron, when the anode current of magnetron is more than pre-
If during threshold value, control module judges that the filament pre-heating of magnetron is completed, and control module control frequency-conversion microwave oven enters normal power
Operation phase.
The startup control method of micro-wave oven variable-frequency power sources according to embodiments of the present invention, after electricity in variable-frequency power sources, control
Variable-frequency power sources processed enters the soft start stage, and control variable-frequency power sources enters warm-up phase after the soft start stage completes, and
Judge whether warm-up phase completes according to the anode current of magnetron, and control variable-frequency power sources is entered after warm-up phase is completed
Enter normal operating phase.So as to the method can be after variable-frequency power sources enters warm-up phase, by detecting the anode electricity of magnetron
Stream is completed accurately judging whether magnetron preheats, and effectively prevent because judging magnetron that warm-up phase is completed and caused too early
And the damage of other devices, the reliability of product is improve, meanwhile, effectively prevent and lead because judging warm-up phase to complete too late
The toggle speed of cause is slow, meets the requirement of quick heating, improves Consumer's Experience.Additionally, also effectively prevent magnetron because of wink
Shi Qi shakes and producing larger dash current affects the working condition of resonance circuit.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy described with reference to the embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
Combined in one or more embodiments or example in an appropriate manner.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiments or example can be tied by art personnel
Close and combine.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three
Individual etc., unless otherwise expressly limited specifically.
In flow chart or here any process described otherwise above or method description are construed as, expression includes
One or more for realizing specific logical function or process the step of the module of code of executable instruction, fragment or portion
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not be by the suitable of shown or discussion
Sequence, including according to involved function by basic and meanwhile in the way of or in the opposite order, carry out perform function, this should be by the present invention
Embodiment person of ordinary skill in the field understood.
Represent in flow charts or here logic described otherwise above and/or step, for example, it is possible to be considered as to use
In the order list of the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, include the system of processor or other can hold from instruction
Row system, device or equipment instruction fetch the system of execute instruction) use, or with reference to these instruction execution systems, device or set
Standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
The dress that defeated program is used for instruction execution system, device or equipment or with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wirings
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program thereon or other are suitable
Medium, because edlin, interpretation can then be entered or if necessary with which for example by carrying out optical scanner to paper or other media
His suitable method is processed to electronically obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, the software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realizing.For example, if realized with hardware, and in another embodiment, can be with well known in the art
Any one of row technology or their combination are realizing：The logic gates having for realizing logic function to data-signal
Discrete logic, the special IC with suitable combinational logic gate circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step of above-described embodiment method carrying
Suddenly the hardware that can be by program to instruct correlation is completed, and described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
Additionally, each functional unit in each embodiment of the present invention can be integrated in a processing module, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a module.Above-mentioned integrated mould
Block both can be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.The integrated module is such as
Fruit using in the form of software function module realize and as independent production marketing or use when, it is also possible to be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..Although having shown that above and retouching
Embodiments of the invention are stated, it is to be understood that above-described embodiment is exemplary, it is impossible to be interpreted as the limit to the present invention
System, one of ordinary skill in the art can be changed to above-described embodiment, change, replace and become within the scope of the invention
Type.
Claims (5)
1. a kind of startup control device of micro-wave oven variable-frequency power sources, it is characterised in that include：
Variable-frequency power sources；
Anode of magnetron current detection module, for detecting the anode current of magnetron, wherein, the anode of magnetron electric current inspection
Survey module to specifically include：First resistor, one end of the first resistor are connected with the anode of the magnetron；Second resistance, institute
The one end for stating second resistance is connected with the other end of the first resistor, the other end ground connection of the second resistance, wherein, described
With first node between first resistor and second resistance；3rd resistor, one end of the 3rd resistor and the first node
It is connected, the other end of the 3rd resistor is the output end of the anode of magnetron current detection module；
Control module, for controlling the variable-frequency power sources to enter the soft start stage, and in institute after electricity in the variable-frequency power sources
State the soft start stage complete after control the variable-frequency power sources to enter warm-up phase, and sentenced according to the anode current of the magnetron
Whether the warm-up phase that breaks completes, and after the warm-up phase is completed, control the variable-frequency power sources to enter normal operation rank
Section.
2. the startup control device of micro-wave oven variable-frequency power sources as claimed in claim 1, it is characterised in that when the magnetron
When anode current is more than predetermined threshold value, judge that the warm-up phase is completed.
3. the startup control device of micro-wave oven variable-frequency power sources as claimed in claim 1, it is characterised in that also include：
Host computer, the host computer are connected with the anode of magnetron current detection module, and the host computer will by order wire
The anode current of the magnetron is sent to the control module.
4. the startup control device of micro-wave oven variable-frequency power sources as claimed in claim 1, it is characterised in that also include：
The optocoupler being connected between the anode of magnetron current detection module and the control module, the anode of magnetron electricity
Stream detection module is sent the anode current of the magnetron to the control module by the optocoupler.
5. a kind of micro-wave oven, it is characterised in that include the startup of the micro-wave oven variable-frequency power sources as described in any one of claim 1-4
Control device.
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| CN201510427507.XA CN104968061B (en) | 2015-07-20 | 2015-07-20 | The startup control device of micro-wave oven and micro-wave oven variable-frequency power sources and method |
| PCT/CN2016/073925 WO2017012338A1 (en) | 2015-07-20 | 2016-02-17 | Microwave oven, and starting control device and method for variable-frequency power supply of microwave oven |
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| CN201510427507.XA CN104968061B (en) | 2015-07-20 | 2015-07-20 | The startup control device of micro-wave oven and micro-wave oven variable-frequency power sources and method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017012338A1 (en) * | 2015-07-20 | 2017-01-26 | 广东美的厨房电器制造有限公司 | Microwave oven, and starting control device and method for variable-frequency power supply of microwave oven |
| JP6720314B2 (en) * | 2015-12-29 | 2020-07-08 | 広東美的厨房電器制造有限公司 | Microwave oven circuit, control method of microwave oven circuit, control device and microwave oven |
| CN107592694B (en) * | 2017-08-16 | 2020-06-16 | 深圳麦格米特电气股份有限公司 | Magnetron temperature adjusting method, device and system, variable frequency power supply and microwave equipment |
| CN107896393B (en) * | 2017-10-30 | 2020-01-03 | 深圳麦格米特电气股份有限公司 | Magnetron temperature adjusting method, device and system, variable frequency power supply and microwave equipment |
| CN108362987A (en) * | 2018-02-01 | 2018-08-03 | 珠海市拓杰科技有限公司 | A kind of working state detection device and method of magnetron |
| CN110739842B (en) * | 2019-12-05 | 2021-11-23 | 苏州易德龙科技股份有限公司 | Soft start method of digital current source |
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