CN104902601B - A kind of Novel variable-frequency heating system - Google Patents
A kind of Novel variable-frequency heating system Download PDFInfo
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- CN104902601B CN104902601B CN201510239662.9A CN201510239662A CN104902601B CN 104902601 B CN104902601 B CN 104902601B CN 201510239662 A CN201510239662 A CN 201510239662A CN 104902601 B CN104902601 B CN 104902601B
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- resistance
- microprocessor
- power switch
- switch pipe
- frequency heating
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 31
- 238000005070 sampling Methods 0.000 claims abstract description 24
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 239000004065 semiconductor Substances 0.000 claims description 14
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The present invention relates to heating system technical field, particularly a kind of Novel variable-frequency heating system, including heater and microprocessor, also include rectification filtering unit, described rectification filtering unit input is connected with alternating current power supply, described rectification filtering unit forms series loop by power switch pipe with heater, described series loop is provided with current sampling resistor, described current sampling resistor is connected with microprocessor by current sampling unit, and described microprocessor is connected with power switch pipe by PWM control unit.After using said structure, the present invention is by the electric current in current sampling unit collection heating series loop, and then microprocessor output PWM ripple exports to power switch pipe to PWM control unit adjustment PWM waveform, thus realizes the variable-frequency heating to heating series loop.The present invention controls variable-frequency heating in real time, saves electric energy, controls effective.
Description
Technical field
The present invention relates to heating system technical field, particularly a kind of Novel variable-frequency heating system.
Background technology
The progress of science and technology leads society to move towards intelligent, energy-saving, nowadays increasing new science and technology innovative product
Gradually change our world, bring new change to life and production.In the commercial production of modernization,
The consumption of electric energy is the one that in production, all energy resource consumptions are maximum, so to reduce power consumption as far as possible,
Allowing limited electric energy is that we create more value.
Chinese utility model patent CN 203757830 U discloses a kind of varible-frequency electromagnetic heater, including heating
Tank, electric control box and converter, heating tank includes the elbow that steel pipe and steel pipe two ends connect, heating tank
Outer felt is wound with coil, and electric control box is connected with coil by converter；One section is also had in described steel pipe
Auxiliary adds heat pipe, and auxiliary adds heat pipe and is connected with steel pipe upper end.Although this patent application can avoid heat waste significantly
Consumption, it is ensured that heating effect；But converter technique aspect is not improved.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of Novel variable-frequency by PWM control realization variable-frequency heating
Heating system.
For solving above-mentioned technical problem, a kind of Novel variable-frequency heating system of the present invention includes heater and Wei Chu
Reason device, also includes that rectification filtering unit, described rectification filtering unit input are connected with alternating current power supply, institute
State rectification filtering unit and form series loop by power switch pipe with heater, described series loop is arranged
Current sampling resistor, described current sampling resistor is had to be connected with microprocessor by current sampling unit, institute
State microprocessor to be connected with power switch pipe by PWM control unit.
Further, described heater being provided with temperature sensor, described temperature sensor is changed by A/D
Device is connected with microprocessor.
Further, described PWM control unit includes metal-oxide-semiconductor J1, and the drain electrode of described metal-oxide-semiconductor J1 is by electricity
Resistance R7 ground connection, the source electrode of described metal-oxide-semiconductor J1 is connected with power switch pipe；The grid of described metal-oxide-semiconductor J1
And it is parallel with diode D1 and resistance R4 between source electrode；The grid of described metal-oxide-semiconductor J1 passes through resistance R5 and three
The colelctor electrode of pole pipe Q1 is connected, the grounded emitter of described audion Q1, the base of described audion Q1
Pole is connected with audion Q2 emitter stage, and being connected between described audion Q2 base stage and emitter stage has diode
D2, the base stage of described audion Q2 is connected with microprocessor by resistance R6.
Further, it is connected between described microprocessor and power switch pipe and has sampling unit, described sampling list
Unit includes that series resistance R1 and R2, the described resistance R1 other end are connected with microprocessor, described resistance R2
The other end is connected with power switch pipe, and the intermediate connection point of described resistance R1 and resistance R2 passes through resistance R3
Ground connection.
Further, described current sampling unit includes being sequentially connected in series rectification circuit, filter circuit, dividing potential drop electricity
Road and amplifying circuit.
Further, described rectification circuit is the full bridge rectifier that diode D3, D4, D5 and D6 are formed,
Described filter circuit is C4, and described bleeder circuit is the series connection bleeder circuit of resistance R9 and R10, described amplification
Circuit is amplifier U1, and the intermediate connection point of described resistance R9 and R10 is by resistance R11 and amplifier U1
Electrode input end is connected, and described amplifier U1 negative input passes through resistance R12 ground connection, described amplifier
U1 outfan is connected with microprocessor.
After using said structure, the present invention is by the electric current in current sampling unit collection heating series loop, so
Rear microprocessor output PWM ripple adjusts PWM waveform to PWM control unit and exports to power switch pipe, thus
Realize the variable-frequency heating to heating series loop.The present invention controls variable-frequency heating in real time, saves electric energy, controls
Effective.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the structured flowchart of the present invention a kind of Novel variable-frequency heating system.
Fig. 2 is the circuit theory diagrams of PWM control unit of the present invention.
Fig. 3 is the circuit theory diagrams of current sampling unit of the present invention.
In figure: 1 is microprocessor, 2 is power switch pipe, and 3 is heater, and 4 is rectification filtering unit, 5
For temperature sensor, 6 is current sampling unit, and 7 is A/D converter, and 8 is PWM control unit
Detailed description of the invention
As it is shown in figure 1, a kind of Novel variable-frequency heating system of the present invention includes heater 3 and microprocessor 1,
Also including rectification filtering unit 4, described rectification filtering unit 4 input is connected with alternating current power supply, the most logical
Heater 3 is heated by over commutation filter unit 4 by after alternating current power supply rectification.Described rectification filtering unit 4
Form series loop by power switch pipe 2 and heater 3, described series loop is provided with current sample
Resistance R8, described current sampling resistor R8 are connected with microprocessor 1 by current sampling unit 6, described
Microprocessor 1 is connected with power switch pipe 2 by PWM control unit 8.The present invention passes through current sample
Electric current in unit collection heating series loop, then microprocessor output PWM ripple is adjusted to PWM control unit
Whole PWM waveform exports to power switch pipe, thus realizes the variable-frequency heating to heating series loop.
In order to preferably control PWM waveform, described heater 3 is provided with temperature sensor 5, described temperature
Sensor is connected with microprocessor 1 by A/D converter 7.
As in figure 2 it is shown, the PWM control unit 8 of present embodiment includes metal-oxide-semiconductor J1, described metal-oxide-semiconductor J1
Drain electrode be connected with power switch pipe by resistance R7 ground connection, the source electrode of described metal-oxide-semiconductor J1；Described MOS
Diode D1 and resistance R4 it is parallel with between grid and the source electrode of pipe J1；The grid of described metal-oxide-semiconductor J1 passes through
Resistance R5 is connected with the colelctor electrode of audion Q1, the grounded emitter of described audion Q1, and described three
The base stage of pole pipe Q1 is connected with audion Q2 emitter stage, connects between described audion Q2 base stage and emitter stage
Being connected to diode D2, the base stage of described audion Q2 is connected with microprocessor by resistance R6.
In order to preferably realize PWM waveform control, it is connected between described microprocessor 1 and power switch pipe 2 and has
Sampling unit, described sampling unit includes series resistance R1 and R2, the described resistance R1 other end and micro-process
Device is connected, and the described resistance R2 other end is connected with power switch pipe, described resistance R1's and resistance R2
Intermediate connection point passes through resistance R3 ground connection.The output waveform of power switch pipe 2 is so gathered by sampling unit
Being transferred to microprocessor 1, microprocessor 1 adjusts accordingly, it is ensured that the output waveform of power switch pipe 2 is
Required frequency conversion adjusts waveform
As it is shown on figure 3, described current sampling unit include being sequentially connected in series rectification circuit, filter circuit, dividing potential drop
Circuit and amplifying circuit.Described rectification circuit is the full-bridge rectification electricity that diode D3, D4, D5 and D6 are formed
Road, described filter circuit is C4, and described bleeder circuit is the series connection bleeder circuit of resistance R9 and R10, described
Amplifying circuit is amplifier U1, and the intermediate connection point of described resistance R9 and R10 passes through resistance R11 and amplifier
U1 electrode input end is connected, and described amplifier U1 negative input passes through resistance R12 ground connection, described amplification
Device U1 outfan is connected with microprocessor.
Although the foregoing describing the detailed description of the invention of the present invention, but those skilled in the art should managing
Solving, these are merely illustrative of, and present embodiment can be made various changes or modifications, without departing from sending out
Bright principle and essence, protection scope of the present invention is only limited by the claims that follow.
Claims (5)
1. a Novel variable-frequency heating system, including heater and microprocessor, it is characterised in that:
Also including rectification filtering unit, described rectification filtering unit input is connected with alternating current power supply, described
Rectification filtering unit forms series loop by power switch pipe with heater, is provided with in described series loop
Current sampling resistor, described current sampling resistor is connected with microprocessor by current sampling unit, described
Microprocessor is connected with power switch pipe by PWM control unit；
Described PWM control unit includes metal-oxide-semiconductor J1, the drain electrode of described metal-oxide-semiconductor J1 by resistance R7 ground connection,
The source electrode of described metal-oxide-semiconductor J1 is connected with power switch pipe；Between grid and the source electrode of described metal-oxide-semiconductor J1
It is parallel with diode D1 and resistance R4；The grid of described metal-oxide-semiconductor J1 is by resistance R5 and audion Q1's
Colelctor electrode is connected, the grounded emitter of described audion Q1, the base stage of described audion Q1 and audion
Q2 emitter stage is connected, and being connected between described audion Q2 base stage and emitter stage has diode D2, and described three
The base stage of pole pipe Q2 is connected with microprocessor by resistance R6.
2. according to a kind of Novel variable-frequency heating system described in claim 1, it is characterised in that: on described heater
Being provided with temperature sensor, described temperature sensor is connected with microprocessor by A/D converter.
3. according to a kind of Novel variable-frequency heating system described in claim 1, it is characterised in that: described microprocessor
Being connected with between power switch pipe and have sampling unit, described sampling unit includes series resistance R1 and R2, described
The resistance R1 other end is connected with microprocessor, and the described resistance R2 other end is connected with power switch pipe,
The intermediate connection point of described resistance R1 and resistance R2 passes through resistance R3 ground connection.
4. according to a kind of Novel variable-frequency heating system described in claim 1, it is characterised in that: described current sample
Unit includes rectification circuit, filter circuit, bleeder circuit and the amplifying circuit being sequentially connected in series.
5. according to a kind of Novel variable-frequency heating system described in claim 4, it is characterised in that: described rectification circuit
The full bridge rectifier formed for diode D3, D4, D5 and D6, described filter circuit is C4, described point
Volt circuit is the series connection bleeder circuit of resistance R9 and R10, and described amplifying circuit is amplifier U1, described resistance
The intermediate connection point of R9 with R10 is connected with amplifier U1 electrode input end by resistance R11, described amplification
Device U1 negative input passes through resistance R12 ground connection, and described amplifier U1 outfan is connected with microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510239662.9A CN104902601B (en) | 2015-05-12 | 2015-05-12 | A kind of Novel variable-frequency heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510239662.9A CN104902601B (en) | 2015-05-12 | 2015-05-12 | A kind of Novel variable-frequency heating system |
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| Publication Number | Publication Date |
|---|---|
| CN104902601A CN104902601A (en) | 2015-09-09 |
| CN104902601B true CN104902601B (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510239662.9A Expired - Fee Related CN104902601B (en) | 2015-05-12 | 2015-05-12 | A kind of Novel variable-frequency heating system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105323875B (en) * | 2015-11-25 | 2018-01-30 | 王志成 | The electric rice cooker heated circuit of 12V~24V DC-voltage supplies |
| CN105307293B (en) * | 2015-11-25 | 2018-01-30 | 王志成 | The electric rice cooker heated circuit of 220V AC voltage power supply |
| CN108548893B (en) * | 2018-03-12 | 2021-03-30 | 宁波安创电子科技有限公司 | Variable-frequency heating method for nitrogen-oxygen sensor |
| CN108925040A (en) * | 2018-08-06 | 2018-11-30 | 芜湖莫森泰克汽车科技股份有限公司 | A kind of PCB circuit board structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008135321A (en) * | 2006-11-29 | 2008-06-12 | Matsushita Electric Ind Co Ltd | Induction heating device |
| CN201841654U (en) * | 2010-08-20 | 2011-05-25 | 雷中喜 | Electricity-saving appliance of electromagnetic induction heating and injection molding device |
| CN104359752B (en) * | 2014-12-03 | 2017-10-13 | 北京东航科仪仪器有限公司 | Electric heating clears up instrument |
| CN204244499U (en) * | 2014-12-19 | 2015-04-01 | 邢台竹源电子科技有限公司 | Invariable power varible-frequency electromagnetic heater |
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| CN104902601A (en) | 2015-09-09 |
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| CB03 | Change of inventor or designer information |
Inventor after: Nie Qi Inventor after: Zou Jianbin Inventor after: Sun Ganlin Inventor after: Zou Yanhui Inventor after: Li Hui Inventor after: Nie Xiaofei Inventor before: Liu Jinding |
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Effective date of registration: 20160909 Address after: No. 19 Jinchuan road 331399 Ji'an city of Jiangxi Province in Xingan County Applicant after: State Grid Electric Power Company of Jiangxi province Xingan County power supply company Applicant after: State Grid Corporation of China Applicant after: GANXI POWER SUPPLY BRANCH, STATE GRID JIANGXI ELECTRIC POWER CO., LTD. Address before: 410000 Hunan Province, Changsha high tech Development Zone, No. 39 pointed Road, software park headquarters building A598 Applicant before: Changsha Jin Ding Information Technology Co., Ltd |
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