CN206993438U - A kind of sensing heating synchronization multi-frequency output circuit - Google Patents
A kind of sensing heating synchronization multi-frequency output circuit Download PDFInfo
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- CN206993438U CN206993438U CN201720552129.2U CN201720552129U CN206993438U CN 206993438 U CN206993438 U CN 206993438U CN 201720552129 U CN201720552129 U CN 201720552129U CN 206993438 U CN206993438 U CN 206993438U
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Abstract
It the utility model is related to induction heating technique field, a kind of disclosed sensing heating synchronization multi-frequency output circuit, including：Phase control rectifier circuit, parallel inverter circuit, high-frequency band pass resonance circuit HF, intermediate frequency band logical resonance circuit MF, low frequency band logical resonance circuit LF, rectification A, rectification B, the rectification C of three parallel inverter bridges of phase control rectifier circuit lead to three high-frequency inversion bridges in parallel, medium frequency inverter bridge, low frequency inverter bridge and high-frequency band pass resonance circuit HF, intermediate frequency band logical resonance circuit MF, low frequency band logical resonance circuit LF and are connected to multifrequency composite transformer and load output circuit respectively.The utility model can make induction heating power load resonant output circuit according to processed part process demand while export the combination of multi-frequency or the one or more different frequencies of across frequency range output, to reach the optimum efficiency of process requirements.
Description
Technical field
It the utility model is related to induction heating technique field, more particularly to a kind of sensing heating synchronization multi-frequency output electricity
Road.
Background technology
Induction heating power has that the efficiency of heating surface is high, speed is fast using electromagnetic inductive heating principle, and controllability is good and is easy to
Realize mechanization, automation the advantages that, and as metal industry heat new and high technology and basic technology, melting, casting,
The industries such as bend pipe, hot forging, welding and Surface heat-treatent are widely used.
But in process of production due to processing part category it is various, part dimension it is different, it is necessary to impedance and frequency
Rate change is very greatly, it is necessary to frequently adjust load matched, and the layer that some many same sections needs of irregular part are different
It is deep, that is, need different frequencies to heat, the same inductor of equipment can only export a kind of frequency simultaneously at present, so mainly
Process requirements are met using heating for multiple times, heating for multiple times adds equipment entirety energy consumption, nor can reach technological design
Optimum efficiency, if technological requirement equipment when different frequency sections work, it is necessary to adjust load matched to complete across frequency range need
Ask, complex operation, influence the operating efficiency of equipment.
The content of the invention
The utility model is to solve above-mentioned traditional induction heating power load resonant output circuit while can only export one
Kind of frequency and across band operation needs adjustment the problem of, proposes a kind of sensing heating synchronization multi-frequency output circuit, adds sensing
Thermoelectric generator load resonant output circuit exports multi-frequency simultaneously according to processed part process demand or across frequency range output is a kind of
Or the combination of a variety of different frequencies, to reach the optimum efficiency of process requirements.
The utility model is as follows to complete foregoing invention purpose solution：
A kind of sensing heating synchronization multi-frequency output circuit, including：Phase control rectifier circuit, parallel inverter circuit, high frequency band
Logical resonance circuit HF, intermediate frequency band logical resonance circuit MF, low frequency band logical resonance circuit LF, multifrequency composite transformer and load output electricity
Road, connection three-phase alternating current A, B, C phase control rectifier circuit are made up of three parallel inverter bridges, three parallel inverter bridges it is controllable
Rectifier bridge rectification A, rectification B, rectification C, respectively by cable and three parallel inverter bridge high-frequency inversion bridges, medium frequency inverter bridge, low
Frequency inverter bridge is connected；The high-frequency inversion bridge output end is connected to high-frequency band pass resonance circuit HF, the medium frequency inverter bridge output
End is connected to intermediate frequency band logical resonance circuit MF, and the low frequency inverter bridge output end is connected to low frequency band logical resonance circuit LF, described
High-frequency band pass resonance circuit HF output ends are in parallel with intermediate frequency band logical resonance circuit MF, then with low frequency band logical resonance circuit LF and being connected to
Multifrequency composite transformer and load output circuit.
A kind of sensing heating synchronization multi-frequency output circuit, three controllable rectifier bridges of the phase control rectifier circuit are by rectification
A, rectification B, rectification C are formed, but are not limited to three, or individually to adjust the watt level rectifier bridge of each road different frequency output.
A kind of sensing heating synchronization multi-frequency output circuit, each inverter bridge of three parallel inverter circuits is by IGBT
Emitter stage and diode anode series connection form a H bridge for unit, high frequency parallel inverter bridge by four IGBT module Z1,
Z2, Z3, Z4 and diode D1, D2, D3, D4 composition, output end are connected to high-frequency band pass resonance circuit HF, intermediate frequency parallel inverter bridge
It is made up of four IGBT modules Z5, Z6, Z7, Z8 and diode D5, D6, D7, D8, output end is connected to intermediate frequency band logical resonance circuit
MF, low frequency parallel inverter bridge are made up of four IGBT modules Z9, Z10, Z11, Z12 and diode D9, D10, D11, D12, output
End is connected to low frequency band logical resonance circuit LF.
A kind of sensing heating synchronization multi-frequency output circuit, the high-frequency band pass resonance circuit HF is by high frequency parallel inverter bridge
Output end resonant capacitor C1 one end in parallel passes through bus series resonance capacitor C3 all the way and output coupling transformer of connecting
TX1 primary sides one end is connected, and the resonant capacitor C1 other ends pass through bus series resonance capacitor C2 all the way and output coupling of connecting
The transformer TX1 primary side other ends are connected.
A kind of sensing heating synchronization multi-frequency output circuit, the intermediate frequency band logical resonance circuit MF is by intermediate frequency parallel inverter bridge
Resonant inductance L1, the series resonance capacitor C5 that output end resonant capacitor C4 one end in parallel is connected by bus all the way and string
One end of connection output coupling transformer TX1 primary sides is connected, the resonance electricity that the resonant capacitor C4 other ends are connected by bus all the way
Sense L2, series resonance capacitor C6 are connected with the other end for output coupling transformer TX1 primary sides of connecting.
A kind of sensing heating synchronization multi-frequency output circuit, the low frequency band logical resonance circuit LF is by low frequency parallel inverter bridge
Output end resonant capacitor C7 one end in parallel passes through bus series resonance inductor L3 all the way and the output coupling transformer TX1 that connects
One end of primary side is connected, and the resonant capacitor C7 other ends in parallel pass through bus series resonance inductor L4 all the way and output coupling of connecting
The other end for closing transformer TX1 primary sides is connected.
A kind of sensing heating synchronization multi-frequency output circuit, the multifrequency composite transformer and load output circuit are by coupling
Transformer TX1 and load coil are formed.
Due to there is following superiority using technical scheme the utility model as described above：
A kind of sensing heating synchronization multi-frequency output circuit, can make induction heating power load resonant output circuit according to
Processed part process demand exports the combination of multi-frequency or the one or more different frequencies of across frequency range output simultaneously, to reach
The optimum efficiency of process requirements.
Brief description of the drawings
Fig. 1 is principle of the invention block diagram；
Fig. 2 is sensing heating synchronization multi-frequency output circuit figure of the present invention；
Fig. 3 is each frequency range waveform figure of multi-frequency output circuit before present invention coupling；
Fig. 4 is multi-frequency synchronism output composite wave-shape figure after present invention coupling.
Embodiment
Implement in order to illustrate more clearly of the purpose of this utility model and technical scheme, said below in conjunction with accompanying drawing
It is bright.
As shown in Figure 1,2,3, 4, a kind of sensing heating synchronization multi-frequency output circuit, including：Phase control rectifier circuit, parallel connection
Inverter circuit, high-frequency band pass resonance circuit HF, intermediate frequency band logical resonance circuit MF, low frequency band logical resonance circuit LF, the compound change of multifrequency
Depressor and load output circuit, connection three-phase alternating current A, B, C phase control rectifier circuit are made up of three parallel inverter bridges, three
Controllable rectifier bridge rectification A, rectification B, the rectification C of parallel inverter bridge, pass through cable and three parallel inverter bridge high-frequency inversions respectively
Bridge, medium frequency inverter bridge, low frequency inverter bridge are connected；The high-frequency inversion bridge output end is connected to high-frequency band pass resonance circuit HF, institute
State medium frequency inverter bridge output end and be connected to intermediate frequency band logical resonance circuit MF, the low frequency inverter bridge output end is connected to low frequency band logical
Resonance circuit LF, the high-frequency band pass resonance circuit HF output ends are in parallel with intermediate frequency band logical resonance circuit MF, then with low frequency band logical
Resonance circuit LF is simultaneously connected to multifrequency composite transformer and load output circuit.
Three controllable rectifier bridges of the phase control rectifier circuit are made up of rectification A, rectification B, rectification C, but are not limited to three,
Or individually to adjust the watt level rectifier bridge of each road different frequency output.
Each inverter bridge of three parallel inverter circuits is a list by IGBT emitter stages and diode anode series connection
Member forms a H bridge, and high frequency parallel inverter bridge is made up of four IGBT modules Z1, Z2, Z3, Z4 and diode D1, D2, D3, D4,
Output end is connected to high-frequency band pass resonance circuit HF, and intermediate frequency parallel inverter bridge is by four IGBT modules Z5, Z6, Z7, Z8 and two poles
Pipe D5, D6, D7, D8 are formed, and output end is connected to intermediate frequency band logical resonance circuit MF, and low frequency parallel inverter bridge is by four IGBT modules
Z9, Z10, Z11, Z12 and diode D9, D10, D11, D12 composition, output end are connected to low frequency band logical resonance circuit LF.
Sensing heating synchronization multi-frequency output circuit block diagram is as shown in figure 1, three-phase alternating current A, B, C input three inputs
Controllable rectifier bridge rectification A, rectification B, the rectification C of parallel connection, three independent direct currents after three rectifier bridge rectifications input three respectively
Parallel inverter bridge, high-frequency inversion bridge, medium frequency inverter bridge, low frequency inverter bridge, the high-frequency inversion bridge are output to high-frequency band pass resonance
Circuit HF, the medium frequency inverter bridge are output to intermediate frequency band logical resonance circuit MF, and it is humorous that the low frequency inverter bridge is output to low frequency band logical
Shake circuit LF, and the high-frequency band pass resonance circuit HF outputs are in parallel with intermediate frequency band logical resonance circuit MF electric with low frequency band logical resonance again
Road LF is simultaneously connected to multifrequency composite transformer and load output circuit, is finally reached the purpose of synchronous multi-frequency output.
The sensing heating synchronization multi-frequency output circuit is high by phase control rectifier circuit, parallel inverter circuit as shown in Figure 2
Frequency band leads to resonance circuit HF, intermediate frequency band logical resonance circuit MF, low frequency band logical resonance circuit LF, and multifrequency composite transformer and load are defeated
Go out circuit composition.
The phase control rectifier circuit as shown in Figure 2 by three controllable rectifier bridge rectification A, rectification B, rectification C, form can be independent
Adjust the watt level of every group of rectification output.
The parallel inverter circuit is inverse by three high-frequency inversion bridge, medium frequency inverter bridge, low frequency inverter bridge parallel connections as shown in Figure 2
Become bridge to form, the colelctor electrode of rectification A output cathodes connection IGBT module Z1, Z2, Z1 emitter stage series diode D1 anode,
D1 negative electrode is connected to IGBT module Z3 colelctor electrode, Z3 emitter stage series diode D3 anode, and D3 negative electrode is connected to
Rectification A output negative poles, Z2 emitter stage series diode D2 anode, D2 negative electrode are connected to IGBT module Z4 colelctor electrode,
Z4 emitter stage series diode D4 anode, D4 negative electrode are connected to rectification A output negative poles, and the common port of the D1 and Z3 are defeated
Go out one end to high-frequency band pass resonance circuit HF, the common port of the D2 and Z4 are output to the another of high-frequency band pass resonance circuit HF
End, by controlling Z1, Z2, Z3, Z4's to turn on and off output ac high frequency to high-frequency band pass resonance circuit HF, described Z1, Z4
Shut-off is opened simultaneously, described Z2, Z3 open shut-off simultaneously；Rectification B output cathodes connect the colelctor electrode of IGBT module Z5, Z6, Z5
Emitter stage series diode D5 anode, D5 negative electrode is connected to IGBT module Z7 colelctor electrode, Z7 emitter stage series connection two
Pole pipe D7 anode, D7 negative electrode are connected to rectification B output negative poles, Z6 emitter stage series diode D6 anode, D6 the moon
Pole is connected to IGBT module Z8 colelctor electrode, Z8 emitter stage series diode D8 anode, and it is defeated that D8 negative electrode is connected to rectification B
Go out negative pole, the common port of the D5 and Z7 are output to intermediate frequency band logical resonance circuit MF one end, and the common port of the D6 and Z8 are defeated
Go out the other end to intermediate frequency band logical resonance circuit MF, by controlling Z5, Z6, Z7, Z8 the output exchange intermediate frequency that turns on and off to arrive
Intermediate frequency band logical resonance circuit MF, described Z5, Z8 open shut-off simultaneously, and described Z6, Z7 open shut-off simultaneously；Rectification C output cathodes
The colelctor electrode of IGBT module Z9, Z10, Z9 emitter stage series diode D9 anode are connected, D9 negative electrode is connected to IGBT moulds
Block Z11 colelctor electrode, Z11 emitter stage series diode D11 anode, D11 negative electrode are connected to rectification C output negative poles, Z10
Emitter stage series diode D10 anode, D10 negative electrode is connected to IGBT module Z12 colelctor electrode, Z12 emitter stage string
Di- pole pipe D12 anode, D12 negative electrode are connected to rectification C output negative poles, and the common port of the D9 and Z11 are output to low frequency
Band logical resonance circuit LF one end, the common port of the D10 and Z12 are output to the low frequency band logical resonance circuit LF other end, lead to
Cross control Z9, Z10, Z11, Z12 turn on and off output alternating low frequency it is same to low frequency band logical resonance circuit LF, described Z9, Z12
Shi Kaitong is turned off, and described Z10, Z11 open shut-off simultaneously.
The high-frequency band pass resonance circuit HF connects resonant capacitor C1, high-frequency electrical by high frequency parallel inverter bridge output-parallel
Flow through bus series resonance capacitor C2 all the way and then to output coupling transformer TX1 primary sides one end through the transformer TX1 other ends
Resonant capacitor C3 is output to, outflowing back to C1 other ends composition high-frequency resonant loop from C3 eventually passes back to bus another way, defeated
Go out waveform such as Fig. 3 V (C1:1) shown in, high frequency waveforms are exported, described C1, C2 form high-frequency band logical loop by other frequency bands
Output isolation.
The intermediate frequency band logical resonance circuit MF connects resonant capacitor C4, medium frequency electric by intermediate frequency parallel inverter bridge output-parallel
Resonant capacitor C5 is again passed through after flowing through bus series resonance inductor L1 all the way and then arrives output coupling transformer TX1 primary sides one end
Resonant capacitor C6 is output to through the transformer TX1 other ends, is flowed through another to C4 after resonant inductance L2 again after resonant capacitor C6
One end forms intermediate frequency resonant tank and eventually passes back to bus another way, output waveform such as Fig. 3 V (V5:+) shown in, export intermediate wave
Shape, described L1, L2, C5, C6, which form intermediate frequency band logical loop, isolates the output of other frequency bands.
The low frequency band logical resonance circuit LF connects resonant capacitor C7, low-frequency electrical by low frequency parallel inverter bridge output-parallel
Bus series resonance inductor L3 all the way and then output coupling transformer TX1 primary sides one end is flowed through to export through the transformer TX1 other ends
To resonant inductance L4, outflow back to C7 other ends composition low-frequency resonant loop from L4 and eventually pass back to bus another way, output waveform
Such as Fig. 3 V (C4:2) shown in, output low frequency waveform, above-mentioned L3, L4 form low frequency band logical loop by the output of other frequency bands every
From.
V (the R2 of the multifrequency composite transformer and load output circuit output waveform such as Fig. 4:1) shown in, multi-frequency waves are exported
Shape, Fig. 4 V (C2:1) low frequency waveform, Fig. 4 V (C5 are shown:+) show intermediate frequency waveform, the multifrequency composite transformer and
Load output circuit is made up of coupling transformer TX1 and load coil, and TX1 secondary multifrequency electric current is through sense after TX1 is compound
Answer heating coil to export the combination of any one or a variety of different frequencies of synchronism output across frequency range, realize that sensing heating is synchronously defeated
Go out the purpose of multifrequency.
Claims (7)
- A kind of 1. sensing heating synchronization multi-frequency output circuit, it is characterised in that including：Phase control rectifier circuit, parallel inverter electricity Road, high-frequency band pass resonance circuit HF, intermediate frequency band logical resonance circuit MF, low frequency band logical resonance circuit LF, multifrequency composite transformer and Load output circuit, connection three-phase alternating current A, B, C phase control rectifier circuit are made up of three parallel inverter bridges, and three parallel connections are inverse Become controllable rectifier bridge rectification A, rectification B, the rectification C of bridge, pass through cable and three parallel inverter bridge high-frequency inversion bridges, intermediate frequencies respectively Inverter bridge, low frequency inverter bridge are connected；The high-frequency inversion bridge output end is connected to high-frequency band pass resonance circuit HF, and the intermediate frequency is inverse Become bridge output end and be connected to intermediate frequency band logical resonance circuit MF, the low frequency inverter bridge output end is connected to low frequency band logical resonance circuit LF, the high-frequency band pass resonance circuit HF output ends are in parallel with intermediate frequency band logical resonance circuit MF, then with low frequency band logical resonance circuit LF is simultaneously connected to multifrequency composite transformer and load output circuit.
- 2. a kind of sensing heating synchronization multi-frequency output circuit according to claim 1, it is characterised in that described phased whole Three controllable rectifier bridges of current circuit are made up of rectification A, rectification B, rectification C, but are not limited to three, or individually to adjust each road not The watt level rectifier bridge of same frequency output.
- 3. a kind of sensing heating synchronization multi-frequency output circuit according to claim 1, it is characterised in that described three simultaneously The each inverter bridge for joining inverter circuit forms a H bridge, high frequency by IGBT emitter stages and diode anode series connection for a unit Parallel inverter bridge is made up of four IGBT modules Z1, Z2, Z3, Z4 and diode D1, D2, D3, D4, and output end is connected to high frequency band Logical resonance circuit HF, intermediate frequency parallel inverter bridge are made up of four IGBT modules Z5, Z6, Z7, Z8 and diode D5, D6, D7, D8, Output end is connected to intermediate frequency band logical resonance circuit MF, and low frequency parallel inverter bridge is by four IGBT modules Z9, Z10, Z11, Z12 and two Pole pipe D9, D10, D11, D12 are formed, and output end is connected to low frequency band logical resonance circuit LF.
- A kind of 4. sensing heating synchronization multi-frequency output circuit according to claim 1, it is characterised in that the high frequency band Logical resonance circuit HF passes through bus series resonance all the way by high frequency parallel inverter bridge output end resonant capacitor C1 one end in parallel Capacitor C3 is connected with series connection output coupling transformer TX1 primary sides one end, and the resonant capacitor C1 other ends pass through bus string all the way Connection resonant capacitor C2 is connected with the series connection output coupling transformer TX1 primary side other ends.
- A kind of 5. sensing heating synchronization multi-frequency output circuit according to claim 1, it is characterised in that the midband Logical resonance circuit MF is connected humorous by intermediate frequency parallel inverter bridge output end resonant capacitor C4 one end in parallel by bus all the way Shake inductance L1, series resonance capacitor C5 with connect output coupling transformer TX1 primary sides one end be connected, resonant capacitor C4 is another Resonant inductance L2, the series resonance capacitor C6 that one end is connected by bus all the way and output coupling transformer TX1 primary sides of connecting The other end be connected.
- A kind of 6. sensing heating synchronization multi-frequency output circuit according to claim 1, it is characterised in that the low-frequency band Logical resonance circuit LF passes through bus series resonance all the way by low frequency parallel inverter bridge output end resonant capacitor C7 one end in parallel Inductance L3 is connected with the one end for output coupling transformer TX1 primary sides of connecting, and the resonant capacitor C7 other ends in parallel pass through all the way Bus series resonance inductor L4 is connected with the other end for output coupling transformer TX1 primary sides of connecting.
- 7. a kind of sensing heating synchronization multi-frequency output circuit according to claim 1, it is characterised in that the multifrequency is answered Close transformer and load output circuit is made up of coupling transformer TX1 and load coil.
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| CN201720552129.2U CN206993438U (en) | 2017-05-17 | 2017-05-17 | A kind of sensing heating synchronization multi-frequency output circuit |
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| CN201720552129.2U CN206993438U (en) | 2017-05-17 | 2017-05-17 | A kind of sensing heating synchronization multi-frequency output circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106973447B (en) * | 2017-05-17 | 2023-11-14 | 洛阳科诺工业设备有限公司 | Induction heating synchronous multi-frequency output circuit |
-
2017
- 2017-05-17 CN CN201720552129.2U patent/CN206993438U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106973447B (en) * | 2017-05-17 | 2023-11-14 | 洛阳科诺工业设备有限公司 | Induction heating synchronous multi-frequency output circuit |
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