CN106507523A - A kind of constant current mode microwave oven supply power - Google Patents
A kind of constant current mode microwave oven supply power Download PDFInfo
- Publication number
- CN106507523A CN106507523A CN201610980107.6A CN201610980107A CN106507523A CN 106507523 A CN106507523 A CN 106507523A CN 201610980107 A CN201610980107 A CN 201610980107A CN 106507523 A CN106507523 A CN 106507523A
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- circuit
- input
- microwave oven
- outfan
- supply power
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
- H05B6/664—Aspects related to the power supply of the microwave heating apparatus
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Abstract
The present invention relates to microwave oven supply power technical field, especially a kind of constant current mode microwave oven supply power.Including rectification circuit, input current voltage sampling circuit, inverter circuit, protection and drive circuit, control unit, heater chain, voltage doubling rectifing circuit, anode current sample circuit, high frequency transformer is exported；The outfan of input current voltage sampling circuit, the outfan of anode current sample circuit is all connected with the input of control unit, output voltage doubling rectifing circuit outfan jointed anode circuit sampling circuit input end, the constant current mode microwave oven supply power is by applying anode circuit sample circuit, ensure that output voltage is raised and self adaptation with magnetron temperature, constant output current, voltage adapts to magnetron temperature change automatically, adapt to the operating characteristic of magnetron completely, the work of magnetron supercurrent is not resulted in, play a part of to protect magnetron, solve the problems, such as that conventional microwave oven magnetron spoilage is higher, safe and reliable, economical and practical.
Description
Technical field
The present invention relates to microwave oven supply power technical field, especially a kind of constant current mode microwave oven supply power.
Background technology
At present, existing microwave oven supply power is with convenient and swift, is industrially widely used the characteristics of efficiency high, but existing
Microwave oven supply power be constant power type microwave oven supply power, and magnetron can operationally assume negative resistance charactertistic, i.e. temperature and raise
When, equivalent resistance accordingly reduces, and on market, existing constant power type microwave oven supply power cannot adapt to this characteristic of magnetron, easily
Cause anode of magnetron supercurrent to work, so as to cause magnetron to damage, affect to use and cause very big potential safety hazard.
Content of the invention
For solving the technical deficiency existing for said apparatus, the invention provides a kind of constant current mode microwave oven supply power, the dress
Put constant output current, voltage and adapt to automatically magnetron temperature change, adapt to the operating characteristic of magnetron completely, do not result in magnetic
Keyholed back plate supercurrent works, and plays a part of to protect magnetron, solves the problems, such as that conventional microwave oven magnetron spoilage is higher, pacifies
Complete reliable, economical and practical.
The technical solution adopted for the present invention to solve the technical problems is that a kind of constant current mode microwave oven supply power, including rectification
Circuit, input current voltage sampling circuit, inverter circuit, protection and drive circuit, control unit, heater chain export multiplication of voltage
Rectification circuit, anode current sample circuit, high frequency transformer；The input connection electrical network of rectification circuit is single-phase, and rectification circuit is defeated
Go out to hold the input of connection inverter circuit and input current voltage sampling circuit, the outfan of input current voltage sampling circuit,
The outfan of anode current sample circuit is all connected with the input of control unit, and protection and the connection control of drive circuit input are single
Unit, protection and drive circuit outfan connect inverter circuit, and high frequency transformer is located between inverter circuit and heater chain, lamp
Silk circuit input end connection high frequency transformer, heater chain outfan connection bulb, the input connection of output voltage doubling rectifing circuit
High frequency transformer, exports voltage doubling rectifing circuit outfan jointed anode circuit sampling circuit input end；The input of rectification circuit
Electrical network can be connected also biphase；The input of rectification circuit can also connect electrical network three-phase.
Workflow, when circuit starts normal work, the alternating current from electrical network after rectification circuit filter rectification,
AC conversion is unidirectional current, and input current voltage sampling circuit is in collection signal code signal herein, DC supply input inversion
After circuit, DC conversion is high-frequency alternating current, and high-frequency alternating current is converted through high frequency transformer again, is that heater chain is powered,
Electric current sets up high pressure through output voltage doubling rectifing circuit simultaneously, and output voltage doubling rectifing circuit high-tension current is exported to be adopted to anode current
Sample circuit, after anode current is through current sample, is fed signals to control unit, then is compared with given circuit, will be true
The output of high-voltage anode current constant is protected, is made machine system in constant current output pattern, is allowed magnetron to be always at optimum state work
Make.Protection and drive circuit input also Access Control unit, when there are abnormal conditions, control unit can rapidly switch off protection and
Drive circuit, prevents semiconductor device from damaging because of overvoltage, overcurrent or excess temperature, realizes the guarantor to circuit under abnormal condition
Shield.
The invention has the beneficial effects as follows, a kind of constant current mode microwave oven supply power, by applying anode circuit sample circuit, it is ensured that
Output voltage is raised and self adaptation with magnetron temperature, and constant output current, voltage adapt to magnetron temperature change automatically, completely
Adapt to the operating characteristic of magnetron, do not result in the work of magnetron supercurrent, play a part of to protect magnetron, solve tradition
The higher problem of microwave oven magnetic spoilage, safe and reliable, economical and practical.
Description of the drawings
Fig. 1 is the circuit theory diagrams of the present invention.
1. rectification circuit in figure, 2. input current voltage sampling circuit, 3. inverter circuit, 4. protection and drive circuit, 5.
Control unit, 6. heater chain, 7. exports voltage doubling rectifing circuit, 8. anode current sample circuit, 9. high frequency transformer.
Specific embodiment
Referring to the drawings, a kind of constant current mode microwave oven supply power, including rectification circuit 1, input current voltage sampling circuit 2 is inverse
Become circuit 3, protection and drive circuit 4, control unit 5, heater chain 6 export voltage doubling rectifing circuit 7, anode current sampling electricity
Road 8, high frequency transformer 9；The input connection electrical network single-phase, two-phase of rectification circuit 1 or three-phase, 1 outfan of rectification circuit connect
Inverter circuit 3 and the input of input current voltage sampling circuit 2, the outfan of input current voltage sampling circuit 2, anode electricity
The outfan of stream sample circuit 8 is all connected with the input of control unit 5, protection and 4 input of drive circuit connection control unit
5, protection and 4 outfan of drive circuit connect inverter circuit 3, high frequency transformer 9 positioned at inverter circuit 4 and heater chain 6 it
Between, 6 input of heater chain connects high frequency transformer 9, and 6 outfan connection bulb of heater chain, output voltage doubling rectifing circuit 7 are defeated
Enter end connection high frequency transformer 9,7 outfan jointed anode circuit sampling circuit of output voltage doubling rectifing circuit, 8 input.
When circuit starts normal work, after 1 filter rectification of rectification circuit, alternating current turns the alternating current from electrical network
Unidirectional current is turned to, input current voltage sampling circuit 2 gathers signal code signal herein, after DC supply input inverter circuit 3,
DC conversion is high-frequency alternating current, and high-frequency alternating current is converted through high frequency transformer 9 again, is that heater chain 5 is powered, while electric
Stream sets up high pressure through output voltage doubling rectifing circuit 7, and output 7 high-tension current of voltage doubling rectifing circuit is exported to anode current sampling electricity
Road 8, after anode current is through current sample, is fed signals to control unit 5, then is compared with given circuit, will be guaranteed
High-voltage anode current constant is exported, and makes machine system in constant current output pattern, allows magnetron to be always at optimum state work.
Protection and 4 input of drive circuit also Access Control unit 5, when there are abnormal conditions, control unit 5 can rapidly switch off protection and
Drive circuit 4, prevents semiconductor device from damaging because of overvoltage, overcurrent or excess temperature, realizes the guarantor to circuit under abnormal condition
Shield.
Claims (3)
1. a kind of constant current mode microwave oven supply power, including rectification circuit, input current voltage sampling circuit, inverter circuit, protection and
Drive circuit, control unit, heater chain export voltage doubling rectifing circuit, and anode current sample circuit, high frequency transformer, its are special
Levy and be, the input connection electrical network of the rectification circuit is single-phase, and the rectification circuit output end connects inverter circuit and input
The input of current-voltage sampling circuit, the outfan of the input current voltage sampling circuit, anode current sample circuit
Outfan is all connected with the input of control unit, the protection and drive circuit input connection control unit, the protection and
Drive circuit outfan connects inverter circuit, and the high frequency transformer is located between inverter circuit and heater chain, the lamp
Silk circuit input end connection high frequency transformer, the heater chain outfan connection bulb, the output voltage doubling rectifing circuit are defeated
Enter end connection high frequency transformer, the output voltage doubling rectifing circuit outfan jointed anode circuit sampling circuit input end.
2. a kind of constant current mode microwave oven supply power according to claims 1, it is characterised in that the input of the rectification circuit
It is biphase that end can also connect electrical network.
3. a kind of constant current mode microwave oven supply power according to claims 1, it is characterised in that the input of the rectification circuit
End can also connect electrical network three-phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610980107.6A CN106507523A (en) | 2016-11-08 | 2016-11-08 | A kind of constant current mode microwave oven supply power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610980107.6A CN106507523A (en) | 2016-11-08 | 2016-11-08 | A kind of constant current mode microwave oven supply power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106507523A true CN106507523A (en) | 2017-03-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610980107.6A Pending CN106507523A (en) | 2016-11-08 | 2016-11-08 | A kind of constant current mode microwave oven supply power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106507523A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988638A (en) * | 2017-06-01 | 2018-12-11 | 关英怀 | The anti-mode hopping anode supply of microwave therapy apparatus magnetron controllable constant-current |
| CN113873704A (en) * | 2021-09-27 | 2021-12-31 | 深圳麦格米特电气股份有限公司 | Starting method of magnetron and variable frequency power supply |
| CN117082663A (en) * | 2023-08-31 | 2023-11-17 | 烟台长青微波科技有限公司 | Control device and method for keeping high voltage constant of magnetron microwave generation source |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1707928A (en) * | 2004-06-09 | 2005-12-14 | 海尔集团公司 | Microwave oven magnetron working electric power source |
| CN201319677Y (en) * | 2008-12-02 | 2009-09-30 | 佛山市顺德区瑞德电子实业有限公司 | Switch power supply for microwave oven magnetron |
| CN204013267U (en) * | 2014-06-23 | 2014-12-10 | 厦门翰普电子有限公司 | A kind of control circuit of thermatron |
| CN104616950A (en) * | 2014-12-27 | 2015-05-13 | 芜湖国睿兆伏电子有限公司 | Preheating circuit of magnetron filament |
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2016
- 2016-11-08 CN CN201610980107.6A patent/CN106507523A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1707928A (en) * | 2004-06-09 | 2005-12-14 | 海尔集团公司 | Microwave oven magnetron working electric power source |
| CN201319677Y (en) * | 2008-12-02 | 2009-09-30 | 佛山市顺德区瑞德电子实业有限公司 | Switch power supply for microwave oven magnetron |
| CN204013267U (en) * | 2014-06-23 | 2014-12-10 | 厦门翰普电子有限公司 | A kind of control circuit of thermatron |
| CN104616950A (en) * | 2014-12-27 | 2015-05-13 | 芜湖国睿兆伏电子有限公司 | Preheating circuit of magnetron filament |
Non-Patent Citations (1)
| Title |
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| 杨威 等: ""工业微波磁控管开关电源系统设计"", 《真空电子技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988638A (en) * | 2017-06-01 | 2018-12-11 | 关英怀 | The anti-mode hopping anode supply of microwave therapy apparatus magnetron controllable constant-current |
| CN113873704A (en) * | 2021-09-27 | 2021-12-31 | 深圳麦格米特电气股份有限公司 | Starting method of magnetron and variable frequency power supply |
| CN113873704B (en) * | 2021-09-27 | 2024-03-12 | 深圳麦格米特电气股份有限公司 | Magnetron starting method and variable frequency power supply |
| CN117082663A (en) * | 2023-08-31 | 2023-11-17 | 烟台长青微波科技有限公司 | Control device and method for keeping high voltage constant of magnetron microwave generation source |
| CN117082663B (en) * | 2023-08-31 | 2024-03-19 | 烟台长青微波科技有限公司 | Control device and method for keeping high voltage constant of magnetron microwave generation source |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170315 |
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| RJ01 | Rejection of invention patent application after publication |