CN104981038B - The control method and device of frequency converter in micro-wave oven - Google Patents
The control method and device of frequency converter in micro-wave oven Download PDFInfo
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- CN104981038B CN104981038B CN201510427527.7A CN201510427527A CN104981038B CN 104981038 B CN104981038 B CN 104981038B CN 201510427527 A CN201510427527 A CN 201510427527A CN 104981038 B CN104981038 B CN 104981038B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The invention discloses the control method and device of frequency converter in a kind of micro-wave oven, wherein, control method comprises the following steps：Frequency converter is communicated with host computer；Frequency converter detects the communication frequency of host computer；Frequency converter determines the rated voltage of micro-wave oven according to the communication frequency of host computer.The control method can improve the versatility of frequency converter in micro-wave oven, and reduce its exploitation and production cost.
Description
Technical field
The present invention relates to household electrical appliance technical field, the control method and dress of frequency converter in more particularly to a kind of micro-wave oven
Put.
Background technology
The culinary art effect that micro-wave oven protrudes by it, is accepted extensively by user already.With the continuous maturation of converter technique, mesh
Preceding positive user gradually popularizes frequency-conversion microwave oven.Frequency-conversion microwave oven has the characteristics of fuselage is light, noise is low, power consumption is low.
To prevent that power is excessive and electric current is exceeded, the frequency converter in frequency-conversion microwave oven can be according to the rated voltage control of micro-wave oven
Power output processed and operating current.However, for different areas, the voltage standard of power supply used may be different.For example, in day
This, the voltage of domestic power supply is commonly 100V, and is commonly 120V in the U.S., the voltage of domestic power supply, correspondingly, two areas
The rated voltage of frequency-conversion microwave oven be respectively 100V and 120V.To meet the needs of different regions, different voltage need to be directed to
Standard, different types of frequency converter is produced to control power and electric current.Therefore, the poor frequency converter of versatility largely effects at present
Product development cycle and production scale, while improve the cost of exploitation and production.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention
Control method of one purpose in the frequency converter in a kind of micro-wave oven is proposed, it is possible to increase the versatility of frequency converter in micro-wave oven,
And reduce its exploitation and production cost.
Control device of the second object of the present invention in the frequency converter in a kind of micro-wave oven is proposed.
According to a first aspect of the present invention in the micro-wave oven of embodiment frequency converter control method, comprise the following steps：Frequency conversion
Device is communicated with host computer；The frequency converter detects the communication frequency of the host computer；The frequency converter is according to described upper
The communication frequency of machine determines the rated voltage of the micro-wave oven.
The control method of frequency converter in micro-wave oven according to embodiments of the present invention, frequency converter can be communicated with host computer,
The communication frequency of detectable host computer simultaneously, and the rated voltage of micro-wave oven can be determined according to communication frequency, thus, can be by microwave
The rated voltage of stove is sent to frequency converter, so as to which frequency converter can control power output and work electricity according to the rated voltage of micro-wave oven
Stream, while safety and reliability is improved, also improves the versatility of frequency converter in micro-wave oven, avoids because of voltage standard
Difference and to frequency converter carry out classification development and production, so as to effectively reduce the construction cycle, expand the scale of production, together
When can reduce exploitation and production cost.
In addition, in micro-wave oven according to the above embodiment of the present invention frequency converter control method, can also have following additional
Technical characteristic：
In one embodiment of the invention, the control method of frequency converter also includes in described micro-wave oven：It is described upper
The state of machine testing hardware switch；Communication frequency with the frequency converter is determined according to the state of the hardware switch.
In one embodiment of the invention, corresponding rated voltage is 100V when the communication frequency is 100Hz, described
Corresponding rated voltage is 120V when communication frequency is 120Hz.
In one embodiment of the invention, the control method of frequency converter also includes in described micro-wave oven：Detect magnetic control
The anode current of pipe；And judge whether warm-up phase is completed according to the anode current of the magnetron, and in the preheating rank
Section controls the frequency converter to enter normal operating phase after completing.
In one embodiment of the invention, the communication frequency of the frequency converter detection host computer specifically includes：Institute
Width/the number for the high/low level that signal is received in frequency converter detection preset time is stated, according to the width of the high/low level
Degree/number detects the communication frequency.
According to a second aspect of the present invention in the micro-wave oven of embodiment frequency converter control device, including：Host computer；Frequency conversion
Device, the frequency converter are communicated with the host computer, and detect the communication frequency of the host computer, and according to the host computer
Communication frequency determine the rated voltage of the micro-wave oven.
The control device of frequency converter in micro-wave oven according to embodiments of the present invention, frequency converter can be communicated with host computer,
The communication frequency of detectable host computer simultaneously, and the rated voltage of micro-wave oven can be determined according to communication frequency, thus, can be by microwave
The rated voltage of stove is sent to frequency converter, so as to which frequency converter can control power output and work electricity according to the rated voltage of micro-wave oven
Stream, while safety and reliability is improved, also improves the versatility of frequency converter in micro-wave oven, avoids because of voltage standard
Difference and to frequency converter carry out classification development and production, so as to effectively reduce the construction cycle, expand the scale of production, together
When can reduce exploitation and production cost.
In addition, in micro-wave oven according to the above embodiment of the present invention frequency converter control device, can also have following additional
Technical characteristic：
In one embodiment of the invention, the host computer is used for：The state of hardware switch is detected, and according to described hard
The state of part switch determines the communication frequency with the frequency converter.
In one embodiment of the invention, corresponding rated voltage is 100V when the communication frequency is 100Hz, described
Corresponding rated voltage is 120V when communication frequency is 120Hz.
In one embodiment of the invention, the host computer is additionally operable to：The anode current of magnetron is detected, and according to institute
The anode current for stating magnetron judges whether warm-up phase is completed, and controls the frequency converter after the warm-up phase is completed
Into normal operating phase.
In one embodiment of the invention, the frequency converter is specifically used for：The frequency converter detection preset time is inscribed
Width/number of the high/low level of signal is received, the communication frequency is detected according to the width of the high/low level/number.
Brief description of the drawings
Fig. 1 is the flow chart of the control method of frequency converter in the micro-wave oven according to one embodiment of the invention；
Fig. 2 is the circuit diagram according to the frequency-conversion microwave oven of one embodiment of the invention；
Fig. 3 is the structured flowchart of the control device of frequency converter in the micro-wave oven according to one embodiment of the invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
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 is not considered as limiting the invention.
Fig. 1 is the flow chart of the control method of frequency converter in the micro-wave oven according to one embodiment of the invention.
As shown in figure 1, in the micro-wave oven of the embodiment of the present invention frequency converter control method, comprise the following steps：
S101, frequency converter are communicated with host computer.
Wherein, host computer can be built in micro-wave oven, communicated by order wire with frequency converter；Or remote control or
The control devices such as mobile terminal, communicated by bluetooth, infrared or wireless network with frequency converter.
S102, frequency converter detect the communication frequency of host computer.
In one embodiment of the invention, host computer can detect the state of hardware switch, and according to the shape of hardware switch
State determines the communication frequency with frequency converter.Specifically, the hardware switch of the host computer institute in the state of on and off can be pre-set
Communication frequency corresponding to respectively.For example, hardware switch is in the on state, communication frequency 100Hz, and in the off state,
Communication frequency is 120Hz.So as to which host computer can determine the communication frequency with frequency converter by the state of its hardware switch.
Fig. 2 is the circuit diagram according to the frequency-conversion microwave oven of one embodiment of the invention.Specifically, as shown in Fig. 2 host computer
Signal of communication can be sent into the MCU of frequency converter (Micro Control Unit, micro-control unit).Frequency converter is receiving
After signal of communication from host computer, width/number of the high/low level of signal, and root are received in detectable preset time
According to width/number detection communication frequency of high/low level.It should be appreciated that the average high/low level per second received of frequency converter
Number, or the inverse of 2 times of high/low level overall widths is communication frequency.If for example, have received 100 low levels in 1S,
Then communication frequency is 100Hz, if the width of high level is 5mS, communication frequency 100Hz.
S103, frequency converter determine the rated voltage of micro-wave oven according to the communication frequency of host computer.
In one embodiment of the invention, corresponding rated voltage is 100V when communication frequency is 100Hz, communication frequency
For 120Hz when corresponding rated voltage be 120V.
For example, can be by adjusting the state of hardware switch when supply voltage used in user is 100V, control
The communication frequency of host computer and frequency converter is 100Hz, and frequency converter judges micro-wave oven after 100Hz communication frequency is received
Rated voltage be 100V.Thus, during the normal use of micro-wave oven, when input voltage is more than 100V, frequency converter can
So that with constant power work, when input voltage is less than 100V, frequency converter can be with constant current work.So as to prevent
Electric current it is exceeded or because power is excessive and to circuit caused by damage.
In one embodiment of the invention, frequency converter can also determine normal heating phases according to the communication frequency of host computer
Power output.Specifically, the power output that frequency converter can be set is corresponding with the communication frequency of host computer.For example, host computer
Communication frequency when being 1200Hz, the power output of corresponding frequency converter is 1200W.
In addition, in one embodiment of the invention, can be normal to save electric energy and improving the service life of magnetron
The magnetron of micro-wave oven is preheated before heating.Therefore, the control method of frequency converter is also in the micro-wave oven of the embodiment of the present invention
It may include：The anode current of magnetron is detected, and judges whether warm-up phase is completed according to the anode current of magnetron, and pre-
Control frequency converter enters normal operating phase after the hot stage completes.
Specifically, when micro-wave oven is heated, warm-up phase can be introduced into, i.e. frequency converter is transported with relatively low power output
OK.When the anode current for detecting magnetron is more than preset value (for example, can be 15A), judge that warm-up phase is completed, and enter
Normal heating phases, now, host computer are communicated with the communication frequency and frequency converter of normal heating phases, to control frequency converter
Run with the power output of the normal heating phases of setting.Wherein, as shown in Fig. 2 the anode current of magnetron can pass through first
The detection circuit of resistance R1, second resistance R2 and 3rd resistor R3 compositions detects.
It should be appreciated that for frequency converter voltage and power output, except the communication frequency by host computer in above-described embodiment
Outside being controlled, it can also be controlled by other means.For example, voltage that can be by overall pulse numerical control frequency converter and output
Power.Specific control mode should not turn into limitation of the present invention.
The control method of frequency converter in micro-wave oven according to embodiments of the present invention, frequency converter can be communicated with host computer,
The communication frequency of host computer is detected simultaneously, and the rated voltage of frequency converter can be determined according to communication frequency, thus, can be by micro-wave oven
Rated voltage be sent to frequency converter, so as to frequency converter can according to the rated voltage of micro-wave oven control power output and work electricity
Stream, while safety and reliability is improved, also improves the versatility of frequency converter in micro-wave oven, avoids in exploitation and life
Classification development and production are carried out to frequency converter because of the difference of voltage standard during production, can effectively reduce the construction cycle, expand
Big production scale, while exploitation and production cost can be reduced.
To realize the control method of frequency converter in the micro-wave oven of above-described embodiment, the present invention also proposes to become in a kind of micro-wave oven
The control device of frequency device.
Fig. 3 is the structured flowchart of the control device of frequency converter in the micro-wave oven according to one embodiment of the invention.Such as Fig. 3 institutes
Show, the control device of frequency converter in the micro-wave oven of the embodiment of the present invention, including：Host computer 10 and frequency converter 20.
Wherein, frequency converter 20 can be communicated with host computer 10, and the communication frequency of detectable host computer 10, and can basis
The communication frequency of host computer 10 determines the rated voltage of micro-wave oven.
Wherein, host computer 10 can be built in micro-wave oven, communicated by order wire with frequency converter 20；Or remote control
The control device such as device or mobile terminal, communicated by bluetooth, infrared or wireless network with frequency converter.
In one embodiment of the invention, host computer 10 can detect the state of hardware switch, and according to hardware switch
State determines the communication frequency with frequency converter.Specifically, state of the hardware switch on and off of host computer 10 can be pre-set
It is lower distinguish corresponding to communication frequency.For example, hardware switch is in the on state, communication frequency 100Hz, and in the state of pass
Under, communication frequency 120Hz.So as to which host computer 10 can determine the communication frequency with frequency converter by the state of its hardware switch.
Frequency converter 20 receives signal after the signal of communication from host computer 10 is received in detectable preset time
Width/number of high/low level, and communication frequency is detected according to width/number of high/low level.It should be appreciated that frequency converter 20
The number of the average high/low level per second received, or the inverse of 2 times of high/low level overall widths is communication frequency.For example,
If have received 100 low levels in 1S, communication frequency 100Hz, if the width of high level is 5mS, communication frequency
For 100Hz.
In one embodiment of the invention, corresponding rated voltage is 100V when communication frequency is 100Hz, communication frequency
For 120Hz when corresponding rated voltage be 120V.
For example, can be by adjusting the state of hardware switch when supply voltage used in user is 100V, control
The communication frequency of host computer 10 and frequency converter 20 is 100Hz, and frequency converter 20 is judged after 100Hz communication frequency is received
The rated voltage of micro-wave oven is 100V.Thus, during the normal use of micro-wave oven, when input voltage is more than 100V, become
Frequency device 20 can be worked with constant power, and when input voltage is less than 100V, frequency converter 20 can be with constant current work.
So as to prevent electric current exceeded or because power is excessive and to circuit caused by damage.
In one embodiment of the invention, frequency converter 20 can also determine normal heating according to the communication frequency of host computer 10
The power output in stage.Specifically, the power output that frequency converter 20 can be set is corresponding with the communication frequency of host computer 10.Example
Such as, when the communication frequency of host computer 10 is 1200Hz, the power output of corresponding frequency converter 20 is 1200W.
In addition, in one embodiment of the invention, can be normal to save electric energy and improving the service life of magnetron
The magnetron of micro-wave oven is preheated before heating.Therefore, in embodiments of the present invention, host computer 10 can be additionally used in：Detection magnetic
The anode current of keyholed back plate, and judge whether warm-up phase is completed according to the anode current of magnetron, and complete it in warm-up phase
Control frequency converter 20 enters normal operating phase afterwards.
Specifically, when micro-wave oven is heated, warm-up phase can be introduced into, i.e., frequency converter 20 is with relatively low power output
Operation.When host computer 10 detects that the anode current of magnetron is more than preset value (for example, can be 15A), warm-up phase is judged
Complete, and enter normal heating phases, now, host computer 10 is led to the communication frequency of normal heating phases and frequency converter 20
Letter, to control frequency converter 20 to be run with the power output of the normal heating phases of setting.Wherein, as shown in Fig. 2 the sun of magnetron
Electrode current can be detected by the detection circuit that first resistor R1, second resistance R2 and 3rd resistor R3 are formed.
It should be appreciated that for the voltage and power output of frequency converter 20, except the communication by host computer in above-described embodiment
Frequency can be also controlled by other means outside being controlled.For example, the voltage of overall pulse numerical control frequency converter 20 can be passed through
And power output.Specific control mode should not turn into limitation of the present invention.
The control device of frequency converter in micro-wave oven according to embodiments of the present invention, frequency converter can be communicated with host computer,
The communication frequency of host computer is detected simultaneously, and the rated voltage of frequency converter can be determined according to communication frequency, thus, can be by micro-wave oven
Rated voltage be sent to frequency converter, so as to frequency converter can according to the rated voltage of micro-wave oven control power output and work electricity
Stream, while safety and reliability is improved, also improves the versatility of frequency converter in micro-wave oven, avoids in exploitation and life
Classification development and production are carried out to frequency converter because of the difference of voltage standard during production, can effectively reduce the construction cycle, expand
Big production scale, while exploitation and production cost can be reduced.
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 for combining the embodiment or example description
Point is contained at least one embodiment or 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.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
Any process or method described otherwise above description in flow chart or herein is construed as, and represents to include
Module, fragment or the portion of the code of the executable instruction of one or more the step of being used to realize specific logical function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for 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 including the system of processor or other can be held from instruction
The system of row system, device or equipment instruction fetch and execute instruction) use, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress used 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 wiring
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, which can even is that, to print the paper of described program thereon or other are suitable
Medium, because can then enter edlin, interpretation or if necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to 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, software that multiple steps or method can be performed in memory and by suitable instruction execution system with storage
Or firmware is realized.If, and in another embodiment, can be with well known in the art for example, realized with hardware
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, have suitable combinational logic gate circuit application specific integrated 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 that above-described embodiment method carries
Suddenly it is that by program the hardware of correlation can be instructed to complete, 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.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..Although have been shown and retouch above
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 (8)
- A kind of 1. control method of frequency converter in micro-wave oven, it is characterised in that including：Frequency converter is communicated with host computer, wherein, the state of the upper computer detection hardware switch, and opened according to the hardware The state of pass determines the communication frequency with the frequency converter；The frequency converter detects the communication frequency of the host computer；The frequency converter determines the rated voltage of the micro-wave oven according to the communication frequency of the host computer.
- 2. the control method of frequency converter in micro-wave oven as claimed in claim 1, it is characterised in that the communication frequency is Corresponding rated voltage is 100V during 100Hz, the communication frequency when being 120Hz corresponding rated voltage be 120V.
- 3. the control method of frequency converter in micro-wave oven as claimed in claim 1, it is characterised in that also include：Detect the anode current of magnetron；AndJudge whether warm-up phase is completed according to the anode current of the magnetron, and controlled after the warm-up phase is completed The frequency converter enters normal operating phase.
- 4. the control method of frequency converter in micro-wave oven as claimed in claim 1, the frequency converter detects the logical of the host computer Letter frequency specifically includes：Width/number of the high/low level of signal is received in the frequency converter detection preset time, according to the high/low electricity Flat width/number detects the communication frequency.
- A kind of 5. control device of frequency converter in micro-wave oven, it is characterised in that including：Host computer, the host computer are used for the state for detecting hardware switch, and according to the determination of the state of the hardware switch and institute State the communication frequency of frequency converter；Frequency converter, the frequency converter are communicated with the host computer, and detect the communication frequency of the host computer, and according to institute The communication frequency for stating host computer determines the rated voltage of the micro-wave oven.
- 6. the control device of frequency converter in micro-wave oven as claimed in claim 5, it is characterised in that the communication frequency is Corresponding rated voltage is 100V during 100Hz, the communication frequency when being 120Hz corresponding rated voltage be 120V.
- 7. the control device of frequency converter in micro-wave oven as claimed in claim 5, it is characterised in that the host computer is additionally operable to：The anode current of magnetron is detected, and judges whether warm-up phase is completed according to the anode current of the magnetron, and The warm-up phase controls the frequency converter to enter normal operating phase after completing.
- 8. the control device of frequency converter in micro-wave oven as claimed in claim 5, it is characterised in that the frequency conversion implement body is used In：Width/number of the high/low level of signal is received in the frequency converter detection preset time, according to the high/low electricity Flat width/number detects the communication frequency.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427527.7A CN104981038B (en) | 2015-07-20 | 2015-07-20 | The control method and device of frequency converter in micro-wave oven |
| 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427527.7A CN104981038B (en) | 2015-07-20 | 2015-07-20 | The control method and device of frequency converter in micro-wave oven |
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| CN104981038A CN104981038A (en) | 2015-10-14 |
| CN104981038B true CN104981038B (en) | 2017-11-14 |
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| CN201510427527.7A Active CN104981038B (en) | 2015-07-20 | 2015-07-20 | The control method and device of frequency converter in micro-wave oven |
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Families Citing this family (1)
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002319946A (en) * | 2001-04-23 | 2002-10-31 | Toshiba Corp | Radio communication apparatus |
| KR20040068748A (en) * | 2003-01-27 | 2004-08-02 | 엘지전자 주식회사 | Frequency Variable Inverter Microwave Oven and Controlling Method for the Same |
| CN2822093Y (en) * | 2005-03-16 | 2006-09-27 | 深圳市拓邦电子科技股份有限公司 | Frequency converter for microwave heating |
| CN101944855B (en) * | 2009-07-07 | 2012-11-28 | 深圳市鑫汇科科技有限公司 | Digital control power supply converter for kitchen range |
| CN102647818B (en) * | 2012-01-13 | 2014-01-29 | 深圳麦格米特电气股份有限公司 | Starting method for variable-frequency power source of microwave oven and variable-frequency power circuit of microwave oven |
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