CN104767402A - Inverter microwave oven power supply adopting multi-output bridge-type power converter - Google Patents
Inverter microwave oven power supply adopting multi-output bridge-type power converter Download PDFInfo
- Publication number
- CN104767402A CN104767402A CN201510188940.2A CN201510188940A CN104767402A CN 104767402 A CN104767402 A CN 104767402A CN 201510188940 A CN201510188940 A CN 201510188940A CN 104767402 A CN104767402 A CN 104767402A
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- China
- Prior art keywords
- power converter
- bridge
- microwave oven
- power supply
- anode
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- 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
- H05B6/664—Aspects related to the power supply of the microwave heating apparatus
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Abstract
The invention relates to an inverter microwave oven power supply adopting a multi-output bridge-type power converter. The inverter microwave oven power supply adopting the multiple output bridge-type power converter comprises a rectifying circuit and a bridge-type power converter, an input end of the rectifying circuit is connected with an electric supply, an output end of the rectifying circuit is connected with an input end of the bridge type power converter which carries two lines of outputs, one set of the outputs supplies electricity for a magnetron filament by adopting filament power supply winding through inductance; the other set of the outputs supplies electricity for a magnetron anode by adopting anode supply winding through an improved voltage doubling rectifying circuit. By means of the inverter microwave oven power supply adopting the multi-output bridge-type power converter, the independent adjustment of the filament voltage and the anode voltage can be achieved.
Description
Technical field
The present invention relates to a kind of frequency-conversion microwave oven power supply, particularly relate to a kind of frequency-conversion microwave oven power supply adopting multi output bridge power converter.
Background technology
In order to give the anode of magnetron and energize filaments, current common microwave oven supply power have employed two class supply power modes: one is independently-powered, and namely anode and filament are powered by independently power supply respectively; Two is that the power supply of an employing multi output is powered.The former advantage is that actualizing technology is comparatively ripe, and can provide multiple magnetron control model for microwave oven control system, shortcoming is that manufacturing cost is high, and brings new Insulation Problems to filament supply; The advantage of the latter is low cost of manufacture, compared with the supply power mode of traditional leakage transformer, does not increase new Insulation Problems, and its shortcoming is the change of filament supply voltage follow anode supply voltage, cannot realize the independent regulation of filament supply voltage.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of frequency-conversion microwave oven power supply adopting multi output bridge power converter, realizes filament voltage and anode voltage Independent adjustable.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of frequency-conversion microwave oven power supply adopting multi output bridge power converter, comprise rectification circuit and bridge power converter, the input of described rectification circuit is connected with civil power, output is connected with the input of bridge power converter, described bridge power converter exports with two-way, by filament supply winding, through inductance, power to magnetron heater for one group; Another group, is powered to anode of magnetron through modified model voltage doubling rectifing circuit by anode supply winding.
Described rectification circuit is bridge rectifier.
Described bridge power converter is full-bridge power converter or half-bridge power converter.
Beneficial effect
Owing to have employed above-mentioned technical scheme, the present invention compared with prior art, has following advantage and good effect: the present invention, on same bridge power converter, achieves the independent regulation of anode of magnetron voltage and filament voltage.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiments of the present invention relate to a kind of frequency-conversion microwave oven power supply adopting multi output bridge power converter, as shown in Figure 1, comprise rectification circuit 1 and bridge power converter 2, the input of described rectification circuit 1 is connected with civil power, output is connected with the input of bridge power converter 2, and described bridge power converter 2 exports with two-way, and one group by filament supply winding, through inductance 3, power to magnetron heater 4; Another group, is powered to anode of magnetron 6 through modified model voltage doubling rectifing circuit 5 by anode supply winding.By regulating the switch operating frequency of bridge power converter, regulating the inductance induction reactance of filament loop, regulating filament voltage, like this, just achieve the Independent adjustable of anode of magnetron voltage and filament voltage.
Be not difficult to find, the present invention is connected in series an inductance in heater chain, eliminate the direct-coupling of Filament Winding output voltage and filament voltage, and pass through the duty cycle of switching and the switching frequency that change bridge power converter, realize filament voltage and anode voltage Independent adjustable.
The present invention is further illustrated below with a specific embodiment.
In this embodiment, main circuit adopts main circuit to adopt full-bridge power converter topological structure, and rectification circuit adopts bridge rectifier.
Electric main after rectification circuit 1 rectification, for full-bridge power converter 2 is powered.The filament low pressure winding of high frequency transformer, after inductance 3, connects the filament 4 of magnetron.Modified model voltage doubling rectifing circuit 5 is connect, for the anode 6 of magnetron provides high voltage direct current after the anode supply high pressure winding of high frequency transformer.The anode supply voltage given for certain and filament supply voltage, the duty ratio of its Global Power converter and the operating frequency deterministic process of switch are: first according to anode supply voltage value, calculate Filament Winding magnitude of voltage, again according to the magnitude of voltage of filament, calculate inductance 3 pressure drop, and obtain the operating frequency of switch thus; By the input voltage of anode supply voltage value and full-bridge converter, determine the duty ratio of now full-bridge converter.
Claims (3)
1. one kind adopts the frequency-conversion microwave oven power supply of multi output bridge power converter, comprise rectification circuit (1) and bridge power converter (2), the input of described rectification circuit (1) is connected with civil power, output is connected with the input of bridge power converter (2), it is characterized in that, described bridge power converter (2) exports with two-way, one group by filament supply winding, through inductance (3), power to magnetron heater (4); Another group, is powered to anode of magnetron (6) through modified model voltage doubling rectifing circuit (5) by anode supply winding.
2. the frequency-conversion microwave oven power supply of employing multi output bridge power converter according to claim 1, is characterized in that, described rectification circuit (1) is bridge rectifier.
3. the frequency-conversion microwave oven power supply of employing multi output bridge power converter according to claim 1, is characterized in that, described bridge power converter (2) is full-bridge power converter or half-bridge power converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510188940.2A CN104767402A (en) | 2015-04-17 | 2015-04-17 | Inverter microwave oven power supply adopting multi-output bridge-type power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510188940.2A CN104767402A (en) | 2015-04-17 | 2015-04-17 | Inverter microwave oven power supply adopting multi-output bridge-type power converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104767402A true CN104767402A (en) | 2015-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510188940.2A Pending CN104767402A (en) | 2015-04-17 | 2015-04-17 | Inverter microwave oven power supply adopting multi-output bridge-type power converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104767402A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5146445A (en) * | 1974-10-18 | 1976-04-20 | Matsushita Electric Ind Co Ltd | Koshuhakanetsusochi |
| US4268779A (en) * | 1979-08-13 | 1981-05-19 | General Electric Company | Circuit for controlling current flow from an A.C. source to a load |
| CN2118926U (en) * | 1991-11-09 | 1992-10-14 | 北京海星电子有限公司 | Micro wave heater by low voltage dc power |
| CN1914955A (en) * | 2004-01-28 | 2007-02-14 | 阿塞里克股份有限公司 | High-frequency heating device |
| CN1960592A (en) * | 2005-10-31 | 2007-05-09 | Lg电子株式会社 | Plasma lighting system and driving control method thereof |
| CN201388308Y (en) * | 2008-12-31 | 2010-01-20 | 福州高奇晶圆电子科技有限公司 | Working power supply circuit for microwave oven |
| CN202750315U (en) * | 2012-08-28 | 2013-02-20 | 深圳麦格米特电气股份有限公司 | Magnetron filament power supply circuit |
| CN103716931A (en) * | 2012-10-05 | 2014-04-09 | 松下电器产业株式会社 | Power control apparatus for high-frequency dielectric heating |
| CN104754790A (en) * | 2015-04-03 | 2015-07-01 | 东华大学 | Frequency-conversion microwave oven power supply capable of being controlled in decoupling manner |
-
2015
- 2015-04-17 CN CN201510188940.2A patent/CN104767402A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5146445A (en) * | 1974-10-18 | 1976-04-20 | Matsushita Electric Ind Co Ltd | Koshuhakanetsusochi |
| US4268779A (en) * | 1979-08-13 | 1981-05-19 | General Electric Company | Circuit for controlling current flow from an A.C. source to a load |
| CN2118926U (en) * | 1991-11-09 | 1992-10-14 | 北京海星电子有限公司 | Micro wave heater by low voltage dc power |
| CN1914955A (en) * | 2004-01-28 | 2007-02-14 | 阿塞里克股份有限公司 | High-frequency heating device |
| CN1960592A (en) * | 2005-10-31 | 2007-05-09 | Lg电子株式会社 | Plasma lighting system and driving control method thereof |
| CN201388308Y (en) * | 2008-12-31 | 2010-01-20 | 福州高奇晶圆电子科技有限公司 | Working power supply circuit for microwave oven |
| CN202750315U (en) * | 2012-08-28 | 2013-02-20 | 深圳麦格米特电气股份有限公司 | Magnetron filament power supply circuit |
| CN103716931A (en) * | 2012-10-05 | 2014-04-09 | 松下电器产业株式会社 | Power control apparatus for high-frequency dielectric heating |
| CN104754790A (en) * | 2015-04-03 | 2015-07-01 | 东华大学 | Frequency-conversion microwave oven power supply capable of being controlled in decoupling manner |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150708 |
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| WD01 | Invention patent application deemed withdrawn after publication |