CN201878361U - Control circuit of microwave generator - Google Patents
Control circuit of microwave generator Download PDFInfo
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- CN201878361U CN201878361U CN2011200314462U CN201120031446U CN201878361U CN 201878361 U CN201878361 U CN 201878361U CN 2011200314462 U CN2011200314462 U CN 2011200314462U CN 201120031446 U CN201120031446 U CN 201120031446U CN 201878361 U CN201878361 U CN 201878361U
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- supply module
- module
- power supply
- microwave generator
- control circuit
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Abstract
The utility model discloses a control circuit of a microwave generator, comprising a programmable logic controller (PLC) programmable control module, a magnetron, an anode power supply module, a filament power supply module and a magnetic field power supply module. The control circuit of the microwave generator is characterized in that the secondary level of a high-voltage transformer T4 in the anode power supply module is provided with three-grade output of high, middle and low, and an MJYD-JL-20/380 type thyristor constant-current and constant-voltage control module is adopted by a voltage regulation module U7 in the magnetic field power supply module. The structure form of the three-grade output of high, middle and low is adopted by the anode power supply module so that when the power grid voltage of users is changed, a microwave generator can select suitable voltage so as to ensure the stable working performance of the microwave generator. Since an MJYD-JL-20/380 type voltage module is adopted in the filament power supply module, the cathode heating power can be regulated and reduced according to the regulation, the phenomenon that the cathode is serious too overheated to be burnt is avoided, and the service life of the microwave generator is prolonged.
Description
Technical field
The utility model relates to a kind of vulcanization of rubber heater, specifically is a kind of control circuit of microwave generator.
Background technology
Microwave energy is produced by microwave generator, and microwave generator comprises microwave tube and two parts of microwave tube power supply.Wherein the effect of microwave tube power supply (be called for short power supply or microwave source) is that an AC energy commonly used is become direct current energy, for the work of microwave tube creates conditions.Microwave tube is the core of microwave generator, and it is transformed into microwave energy with direct current energy.Microwave tube has microwave transistor and microwave tube two big classes.The microwave transistor power output is less, generally is used for fields such as measurement and communication.The microwave tube kind is a lot, and commonly used have magnetron, klystron, a travelling wave tube etc.Their operation principle difference, structure difference, performance are different, and in radar, navigation, communication, electronic countermeasures and heating, aspects such as scientific research all are widely used.Since magnetron simple in structure, efficient is high, operating voltage is low, power supply is simple and the ability of adaptation load variations is strong, thereby is specially adapted to other application of microwave heating and microwave energy.Magnetron is because the difference of operating state can be divided into pulsed magnetron and continuous wave magnetron two classes.Microwave heating equipment operates mainly in the continuous wave state, so use continuous wave magnetron more.Magnetron is a kind of electron tube that is used for producing microwave energy.Come down to a diode that places the stationary magnetic field.Electronics interacts with the electromagnetic field of high frequency under the control of orthogonal stationary magnetic field and steady electric field in the pipe, is transformed into microwave energy obtain energy from steady electric field, thereby reaches the purpose that produces microwave energy.
The problem that the microwave current generator exists is: after the magnetron starting of oscillation, be in superheat state owing to unfavorable electron back bombardment negative electrode raises cathode temperature, negative electrode is overheated will to make material evaporation aggravation, and the lost of life will burn out negative electrode when serious; In addition, filament underheat causes that emission is not enough, can not provide pi-mode oscillation required pipe electric current, can cause that moding of a magnetron and negative electrode are overheated; Because when user's line voltage changed, microwave generator can not be selected suitable voltage, can make the service behaviour of microwave generator stable inadequately, thereby influence the operate as normal of microwave generator.
Summary of the invention
In order to overcome above-mentioned deficiency, the utility model purpose is to provide a kind of control circuit that guarantees the microwave generator of microwave generator stable work in work and long service life.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of control circuit of microwave generator, include PLC programmable control module, magnetron, anode supply module, filament supply module and magnetic field power supply module, described anode supply module, filament supply module and magnetic field power supply module are respectively magnetron provides power supply, and is connected with the PLC programmable control module respectively by the electric weight isolation sensor, it is characterized in that: the high-tension transformer T4 in the described anode supply module secondary is provided with high, normal, basic third gear and exports; Voltage regulating module U7 in the described magnetic field power supply module adopts MJYD-JL-20/380 type thyristor constant current constant voltage control module.
Be connected to high-voltage fuse in the anode loop of described anode supply module in order to protection magnetron and high voltage silicon stack.
Voltage regulating module TY1 in the described filament supply module adopts MJYD-JL-20/380 type voltage regulating module.
Described PLC programmable control module is connected with touching display screen.
Mains switch SA1 in the described control circuit is a key switch.
The beneficial effects of the utility model: owing to the version that the anode supply module is adopted high, normal, basic third gear output, when user's line voltage changed, microwave generator can be selected suitable voltage, thereby the service behaviour of assurance microwave generator is stable; Owing to adopt MJYD-JL-20/380 type voltage regulating module in the filament supply module, can adjust in accordance with regulations and reduce the negative electrode heating power, thereby avoid negative electrode overheated, will burn out the phenomenon of negative electrode when serious, thereby prolong the useful life of microwave generator.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is an electric theory diagram of the present utility model;
Fig. 2 is the electrical schematic diagram of anode supply module shown in Figure 1;
Fig. 3 is the electrical schematic diagram of filament supply module shown in Figure 1;
Fig. 4 is the electrical schematic diagram of magnetic field power supply module shown in Figure 1;
Fig. 5 is the circuit connection diagram of PLC programmable control module in control circuit shown in Figure 1.
Among the figure: 1, PLC programmable control module; 2, magnetron; 3, anode supply module; 4, filament supply module; 5, magnetic field power supply module; 6, electric weight isolation sensor; 7, touching display screen.
Embodiment
As shown in Figure 1, a kind of control circuit of microwave generator, include PLC programmable control module 1, magnetron 2, anode supply module 3, filament supply module 4 and magnetic field power supply module 5, described anode supply module 3, filament supply module 4 and magnetic field power supply module 5 are respectively magnetron 2 power supply are provided, and be connected with PLC programmable control module 1 respectively by electric weight isolation sensor 6, PLC programmable control module 1 is connected with touching display screen 7.
As shown in Figure 2, the high-tension transformer T4 in the anode supply module secondary is provided with high, normal, basic third gear output.When user's line voltage changes, select suitable shelves effect.The anode of anode supply through the part winding of electromagnetic wire bag receive magnetron anode ().The negative pole of anode supply is received the negative electrode (filament) of magnetron.Be connected to high-voltage fuse FU4 and anode current table PA3 in the anode loop, high-voltage fuse FU4 is used to protect magnetron and high voltage silicon stack.
As shown in Figure 4, the voltage regulating module U7 in the described magnetic field power supply module adopts MJYD-JL-20/380 type thyristor constant current constant voltage control module.The single phase bridge type rectifier circu that rectification module in the magnetic field power supply module 5 is made of diode V1～4.Before the transformation rectification, carry out pressure regulation with voltage regulating module U7 earlier, rectification produces the needed magnetic field intensity of magnetron after capacitor C2 filtering is added to electromagnetism iron wire bag L1.Be provided with field supply table PA2 in field circuit, it has reacted the size of the magnetic field intensity that electromagnet produced.
As shown in Figure 3, filament supply module 4 includes voltage regulating module and filament transformer T1, and voltage regulating module TY1 adopts MJYD-JL-20/380 type voltage regulating module; The first polar curve circle of filament transformer T1 is connected to heater current table PA1, and this table indirect reaction goes out the heater current of magnetron.Utilize voltage regulating module to adjust in accordance with regulations and reduce the negative electrode heating power, thereby avoided the overheated material that will make of negative electrode to evaporate aggravation, the lost of life, the phenomenon that will burn out negative electrode when serious takes place.
As shown in Figure 5, the mains switch SA1 in the control circuit is a key switch.
Though described execution mode of the present utility model in conjunction with the accompanying drawings; but those skilled in the art can make various distortion or modification within the scope of the appended claims; as long as be no more than the described protection range of claim of the present utility model, all should be within protection range of the present utility model.
Claims (5)
1. the control circuit of a microwave generator, include PLC programmable control module (1), magnetron (2), anode supply module (3), filament supply module (4) and magnetic field power supply module (5), described anode supply module (3), filament supply module (4) and magnetic field power supply module (5) are respectively magnetron (2) power supply are provided, and is connected with PLC programmable control module (1) respectively by electric weight isolation sensor (6), it is characterized in that: the high-tension transformer (T4) in the described anode supply module (3) secondary is provided with high, normal, basic third gear and exports; Voltage regulating module (U7) in the described magnetic field power supply module adopts MJYD-JL-20/380 type thyristor constant current constant voltage control module.
2. the control circuit of microwave generator according to claim 1 is characterized in that: be connected to high-voltage fuse (FU4) in the anode loop of described anode supply module (3).
3. the control circuit of microwave generator according to claim 1 is characterized in that: voltage regulating module (TY1) the employing MJYD-JL-20/380 type voltage regulating module in the described filament supply module (4).
4. the control circuit of microwave generator according to claim 1, it is characterized in that: described PLC programmable control module (1) is connected with touching display screen (7).
5. the control circuit of microwave generator according to claim 1, it is characterized in that: the mains switch in the described control circuit (SA1) is a key switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200314462U CN201878361U (en) | 2011-01-30 | 2011-01-30 | Control circuit of microwave generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200314462U CN201878361U (en) | 2011-01-30 | 2011-01-30 | Control circuit of microwave generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201878361U true CN201878361U (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200314462U Expired - Fee Related CN201878361U (en) | 2011-01-30 | 2011-01-30 | Control circuit of microwave generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN201878361U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105101502A (en) * | 2014-05-08 | 2015-11-25 | 南京三乐微波技术发展有限公司 | Microwave energy generator of high power and low ripple factor |
| CN105430784A (en) * | 2014-08-29 | 2016-03-23 | 南京三乐微波技术发展有限公司 | Large-power high-frequency-stability microwave energy generator |
| CN111521638A (en) * | 2020-06-10 | 2020-08-11 | 长江重庆航道工程局 | Water content detection method and device suitable for various solid substances |
-
2011
- 2011-01-30 CN CN2011200314462U patent/CN201878361U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105101502A (en) * | 2014-05-08 | 2015-11-25 | 南京三乐微波技术发展有限公司 | Microwave energy generator of high power and low ripple factor |
| CN105430784A (en) * | 2014-08-29 | 2016-03-23 | 南京三乐微波技术发展有限公司 | Large-power high-frequency-stability microwave energy generator |
| CN111521638A (en) * | 2020-06-10 | 2020-08-11 | 长江重庆航道工程局 | Water content detection method and device suitable for various solid substances |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20120130 |