CN206313657U - EMC filter circuit and electromagnetism stove - Google Patents
EMC filter circuit and electromagnetism stove Download PDFInfo
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- CN206313657U CN206313657U CN201621173535.XU CN201621173535U CN206313657U CN 206313657 U CN206313657 U CN 206313657U CN 201621173535 U CN201621173535 U CN 201621173535U CN 206313657 U CN206313657 U CN 206313657U
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- mode inductance
- emc filter
- filter circuit
- electric capacity
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- 239000002707 nanocrystalline material Substances 0.000 claims abstract description 9
- 239000000696 magnetic material Substances 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- 239000002178 crystalline material Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 12
- 238000001914 filtration Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- 239000003990 capacitor Substances 0.000 abstract 3
- 238000005516 engineering process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
The utility model provides an EMC filter circuit (10) and electromagnetism stove. The EMC filter circuit (10) includes: a first capacitor (11), a common mode inductor (12) and a differential mode inductor (13); a first input end of the common mode inductor (12) is connected with a first end of the first capacitor (11), a second input end of the common mode inductor (12) is connected with a second end of the first capacitor (11), and a first output end of the common mode inductor (12) is connected with one end of the differential mode inductor (13); a first input end and a second input end of the common mode inductor (12) are used as input ends of the EMC filter circuit (10) for connecting a mains supply; the second output end of the common mode inductor (12) and the other end of the differential mode inductor (13) are used as the output end of the EMC filter circuit (10) for outputting filtered mains supply; the magnetic core of the differential mode inductor (13) is made of amorphous materials or nanocrystalline materials, and the filtering effect is improved.
Description
Technical field
The utility model is related to circuit structure technical field, more particularly to a kind of EMC filter circuit and electromagnetic oven.
Background technology
Electro Magnetic Compatibility (Electro Magnetic Compatibility, abbreviation EMC) refers in same electromagnetic environment
In, equipment can not be because of the interference effect normal work of other equipment, while also not producing the dry of influence work on other equipment
Disturb.With the fast development of information technology, the electronic equipment in subscriber household is more and more, and the EMC requirements to electronic equipment are healed
Come higher.There is strict standard in every country or area for the EMC of electronics and IT products.
To filter the external electromagnetic electromagnetic interference introduced from power line, being made an uproar while avoiding this electronic equipment from being sent to outside
Acoustic jamming influences the work of other electronic equipments under same electromagnetic environment, and meets the national standard about EMC, it is necessary to be electricity
Sub- equipment increases EMC filter circuit.Common EMC filter circuit be by increased magnet ring on power line, it is increased on wiring board
X2 suppresses the compositions such as powered electromagnetic interference electricity container, the common mode inductance of ferrite material, differential mode inductance, existing EMC filtering
Circuit filtering element is more, stand-by power consumption is than larger and cost is also high.
Utility model content
For at least one problem for solving to be mentioned in background technology, the utility model provide a kind of EMC filter circuit and
Electromagnetic oven, improves filter effect.
On the one hand the utility model provides a kind of EMC filter circuit, including：First electric capacity, common mode inductance and differential mode inductance；
Wherein,
The first input end of the common mode inductance is connected with the first end of first electric capacity, and the second of the common mode inductance
Input is connected with the second end of first electric capacity, the first output end of the common mode inductance and one end of the differential mode inductance
Connection；
The first input end of the common mode inductance and the second input are used as the input of the EMC filter circuit (10)
In connection mains supply；
Second output end of the common mode inductance and the other end of the differential mode inductance are used as the defeated of the EMC filter circuit
Go out end for exporting filtered mains supply；
The magnetic core of the differential mode inductance is made up of non-crystalline material or nanocrystalline material.
Because the magnetic core of the differential mode inductance in EMC filter circuit is made by by non-crystalline material or nanocrystalline material, improve
Magnetic conductivity, and then the filter effect of differential mode inductance is improve, while can be by using the first relatively low electric capacity of capacitance, it is possible to decrease
The stand-by power consumption of EMC filter circuit, therefore, the EMC filter circuit that the utility model is provided can improve filter effect, reduce standby
Power consumption.
EMC filter circuit as described above, the differential mode inductance includes coiled wire-wound coil and magnetic material, the coiled wire-wound coil
It is fixed on inside the magnetic material, the differential mode inductance is integrally formed.
Integrally formed differential mode inductance can by Machine automated processing, so as to reduce the manufacturing cost of differential mode inductance,
The precision of differential mode inductance can be improved.
EMC filter circuit as described above, also includes：Second electric capacity；
The output end of the EMC filter circuit is used to be connected with the ac input end of rectification circuit, and second electric capacity is used
In the two ends of the DC output end for being connected in parallel on the rectification circuit.
Filter effect is further increased by increasing by the second electric capacity.
On the other hand the utility model provides a kind of electromagnetic oven, including EMC filter circuit as described above, rectification circuit,
Resonance circuit, on-off circuit；Wherein,
First electric capacity is connected in parallel on mains supply two ends, the output end of the EMC filter circuit and the friendship of rectification circuit
Stream input connection, second electric capacity is connected in parallel on the two ends of the DC output end of the rectification circuit, the rectification circuit
DC output end is sequentially connected with the on-off circuit, the resonance circuit, forms current supply circuit.
Because EMC filter circuit has preferable filter circuit, stand-by power consumption relatively low, therefore, filtered using EMC as described above
The electromagnetic oven of wave circuit has preferable working effect, reduces electromagnetic interference of the electromagnetic oven to surrounding environment, has saved electric energy.
Electromagnetic oven as described above, also includes：Protective tube, guarantor is connected between the mains supply and first electric capacity
Danger pipe.
Because protective tube can fuse when electric current is larger, so as to stop mains supply being powered to electromagnetic oven, cause electromagnetic oven
It is stopped, can plays a part of to protect electromagnetic oven.
Electromagnetic oven as described above, also includes：Control circuit, the on-off circuit includes IGBT circuits；
The collector and emitter of the IGBT circuits is connected in the current supply circuit；
The control circuit is connected with the base stage of the IGBT circuits, conducting or pass for controlling the IGBT circuits
It is disconnected.
Construction of the present utility model and its other utility model purposes and beneficial effect will be by with reference to accompanying drawings
Description of preferred embodiments and it is more obvious understandable.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, below will be to being wanted needed for embodiment description
The accompanying drawing for using is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present utility model,
For those of ordinary skill in the art, without having to pay creative labor, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
The structural representation one of the EMC filter circuit that Fig. 1 is provided for the utility model；
The structural representation two of the EMC filter circuit that Fig. 2 is provided for the utility model；
The structural representation three of the EMC filter circuit that Fig. 3 is provided for the utility model；
The structural representation one of the electromagnetic oven that Fig. 4 is provided for the utility model；
The structural representation two of the electromagnetic oven that Fig. 5 is provided for the utility model；
The structural representation three of the electromagnetic oven that Fig. 6 is provided for the utility model.
Reference：
10-EMC filter circuit；11-the first electric capacity；12-common mode inductance；
13-differential mode inductance；14-coiled wire-wound coil；15-magnetic material；
16-the second electric capacity；20-rectification circuit；30-resonance circuit；
40-on-off circuit；41-IGBT circuits；50-protective tube；
60-control circuit.
Specific embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, is clearly and completely described, it is clear that retouched to the technical scheme in the utility model embodiment
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
The structural representation one of the EMC filter circuit that Fig. 1 is provided for the utility model.Referring to Fig. 1, the EMC filter circuit
10, including：First electric capacity 11, common mode inductance 12 and differential mode inductance 13；Wherein,
The first input end of common mode inductance 12 is connected with the first end of the first electric capacity 11, the second input of common mode inductance 12
The second end with the first electric capacity 11 is connected, and the first output end of common mode inductance 12 is connected with one end of differential mode inductance 13；
The first input end of common mode inductance 12 and the second input are used to connect city as the input of EMC filter circuit 10
Power supply；
Second output end of common mode inductance 12 and the other end of differential mode inductance 13 are used as the output end of EMC filter circuit 10
In the filtered mains supply of output；
The magnetic core of differential mode inductance 13 is made up of non-crystalline material or nanocrystalline material.
Specifically, the EMC filter circuit that the utility model is provided is widely used in electromagnetic oven, insulating pot, air-conditioning, TV etc.
In each electric appliances.According to the different of application apparatus and the difference of the interference for filtering, EMC filter circuit 10 is exemplary, can wrap
Include the first electric capacity 11, common mode inductance 12 and differential mode inductance 13.
Wherein, common mode inductance 12 is used to suppress the common mode interference signal on power line.The first input end of common mode inductance 12
It is used to connect mains supply as the input of EMC filter circuit 10 with the second input, the first electric capacity 11 is connected in parallel on civil power electricity
Source two ends.That is, the first input end of common mode inductance 12 is connected with the first end of the first electric capacity 11, the second input of common mode inductance 12
End is connected with the second end of the first electric capacity 11.
First output end of common mode inductance 12 is connected with one end of differential mode inductance 13, the second output end of common mode inductance 12 and
The other end of differential mode inductance 13 is used to export filtered mains supply, EMC filtered electricals as the output end of EMC filter circuit 10
Operating circuit of the output end on road 10 generally with the electronic equipment for installing the EMC filter circuit 10 is connected, and is provided to operating circuit
Filtered mains supply.Optionally, it is contemplated that most electronic device works under direct-current working volts, EMC filtered electricals
The output end on road 10 is generally connected with alternating current-direct current rectification circuit.
Further, the magnetic core of differential mode inductance 13 is made up of non-crystalline material or nanocrystalline material, compared to using conventional iron,
The magnetic core that the metal materials such as nickel, copper, aluminium are made, the magnetic being made up of non-crystalline material or nanocrystalline material that the utility model is provided
Core, magnetic conductivity is improved, and then improves the filter effect of differential mode inductance 13, due to differential mode inductance 13 filtering performance compared with
It is good, therefore, can be using the first electric capacity 11 with relatively low capacitance, the capacitance reduction of the first electric capacity 11, it is possible to decrease EMC is filtered
The stand-by power consumption of circuit 10.
The EMC filter circuit that the utility model is provided includes：First electric capacity, common mode inductance and differential mode inductance；Wherein, first
Electric capacity is connected in parallel on common mode inductance input, and the output end of common mode inductance is connected with differential mode inductance, wherein the magnetic core of differential mode inductance by
Non-crystalline material or nanocrystalline material are made.The magnetic core of the differential mode inductance in the EMC filter circuit that the utility model is provided is by by non-
Brilliant material or nanocrystalline material are made, and improve magnetic conductivity, and then improve the filter effect of differential mode inductance, while can be by adopting
With the first relatively low electric capacity of capacitance, it is possible to decrease the stand-by power consumption of EMC filter circuit, therefore, the EMC filters that the utility model is provided
Wave circuit can improve filter effect, reduce stand-by power consumption.
On the basis of embodiment illustrated in fig. 1, the structural representation of the EMC filter circuit that Fig. 2 is provided for the utility model
Two, as shown in Fig. 2 differential mode inductance 13 includes coiled wire-wound coil 14 and magnetic material 15, coiled wire-wound coil 14 is fixed on magnetic material 15
Inside, differential mode inductance 13 is integrally formed.
Specifically, differential mode inductance 13 is die casting inductance, the coiled wire-wound coil 14 of differential mode inductance 13 is arranged in magnetic material 15
Portion, coiled wire-wound coil 14 and differential mode inductance 13 can by Machine automated processing, so as to reduce the manufacturing cost of differential mode inductance 13,
Also improve the precision of differential mode inductance 13.
On the basis of Fig. 1 or embodiment illustrated in fig. 2, Fig. 3 shows for the structure of the EMC filter circuit that the utility model is provided
It is intended to three, as shown in figure 3, EMC filter circuit 10 also includes：Second electric capacity 16；
The output end of EMC filter circuit 10 is used to be connected with the ac input end of rectification circuit 20, and the second electric capacity 16 is used for
It is connected in parallel on the two ends of the DC output end of rectification circuit 20.
Exemplary, as shown in figure 3, in actual application, when the output end of EMC filter circuit 10 connects rectified current
During the ac input end on road 20, the second electric capacity 16 can be arranged in parallel in the DC output end of rectification circuit 20, to improve EMC filtering
The filter effect of circuit 10.
Optionally, what the capacity of the first electric capacity and the second electric capacity was exemplary can be 2 microfarads, the first electric capacity and the second electric capacity
Capacity and without departing from 5 microfarads.First electric capacity is arranged on common mode inductance front end, the filter effect to low-frequency range is relatively good, right
For electromagnetic oven, the filter effect of the frequency range of below 500k is obvious.
On the other hand the utility model provides a kind of electromagnetic oven, and the utility model is provided using specific embodiment below
Electromagnetic oven is described in detail.On the basis of any of the above-described embodiment, the structure of the electromagnetic oven that Fig. 4 is provided for the utility model
Schematic diagram one, as shown in figure 4, electromagnetic oven is included such as the EMC filter circuit 10 in above-mentioned any embodiment, and rectification circuit
20th, resonance circuit 30 and on-off circuit 40；Wherein,
First electric capacity 11 is connected in parallel on mains supply two ends, the output end of EMC filter circuit 10 and exchanging for rectification circuit 20
Input is connected, and the second electric capacity 16 is connected in parallel on the two ends of the DC output end of rectification circuit 20, the direct current output of rectification circuit 20
End is sequentially connected with on-off circuit 40, resonance circuit 30, forms current supply circuit.
Exemplary, as shown in figure 4, electromagnetic oven includes the EMC filter circuit 10, the rectification circuit 20, resonance that are sequentially connected
Circuit 30 and on-off circuit 40.Specifically, the input of EMC filter circuit 10 is connected with mains supply, in EMC filter circuit 10
The first electric capacity 11 be connected in parallel on mains supply two ends, the output end of EMC filter circuit 10 and the ac input end of rectification circuit 20
Connection, the second electric capacity 16 is connected in parallel on the two ends of the DC output end of rectification circuit 20, the DC output end of rectification circuit 20 with open
Powered-down road 40, resonance circuit 30 are sequentially connected, and form current supply circuit.
The EMC filter circuit set in the electromagnetic oven that the utility model is provided has preferable filter circuit, stand-by power consumption
It is relatively low, therefore so that electromagnetic oven has preferable working effect, reduces electromagnetic interference of the electromagnetic oven to surrounding environment, saves
Electric energy.
On the basis of embodiment illustrated in fig. 4, the structural representation two of the electromagnetic oven that Fig. 5 is provided for the utility model.Such as
Shown in Fig. 5, electromagnetic oven also includes：Protective tube 50, protective tube 50 is connected between mains supply and the first electric capacity 11.
Specifically, to avoid electromagnetic oven from working at higher currents, or avoid dash current inflow electromagnetic oven higher from leading
Cause electromagnetic oven to burn out, protective tube 50 can be set between mains supply and the first electric capacity 11, protective tube 50 can be when electric current be larger
Fusing, so as to stop mains supply being powered to electromagnetic oven, causes electromagnetic oven to be stopped, and protects electromagnetic oven.
On the basis of Fig. 4 or embodiment illustrated in fig. 5, the structural representation of the electromagnetic oven that Fig. 6 is provided for the utility model
Three.As shown in fig. 6, electromagnetic oven also includes：Control circuit 60, on-off circuit 40 includes IGBT circuits 41；
The collector and emitter of IGBT circuits 41 is connected in current supply circuit；
Control circuit 60 is connected with the base stage of IGBT circuits 41, the on or off for controlling IGBT circuits 41.
Exemplary, on-off circuit 40 is specifically as follows insulated gate bipolar transistor (Insulated Gate
Bipolar Transistor, abbreviation IGBT) circuit, transistor circuit etc..When on-off circuit 40 includes IGBT circuits 41,
The collector and emitter of IGBT circuits 41 is connected to rectification circuit 20 and is in turn connected to form with on-off circuit 40, resonance circuit 30
Current supply circuit in.The control circuit 60 of electromagnetic oven is connected with the base stage of IGBT circuits 41, for controlling leading for IGBT circuits 41
Logical or shut-off.
Optionally, resonance circuit 30 includes inductance and electric capacity in parallel.
Finally it should be noted that：Various embodiments above is only used to illustrate the technical solution of the utility model, rather than it is limited
System；Although being described in detail to the utility model with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (6)
1. a kind of EMC filter circuit (10), it is characterised in that including：First electric capacity (11), common mode inductance (12) and differential mode inductance
(13)；Wherein,
The first input end of the common mode inductance (12) is connected with the first end of first electric capacity (11), the common mode inductance
(12) the second input is connected with the second end of first electric capacity (11), the first output end of the common mode inductance (12) with
One end connection of the differential mode inductance (13)；
The first input end and the second input of the common mode inductance (12) are used as the input of the EMC filter circuit (10)
In connection mains supply；
Second output end of the common mode inductance (12) and the other end of the differential mode inductance (13) are used as the EMC filter circuit
(10) output end is used to export filtered mains supply；
The magnetic core of the differential mode inductance (13) is made up of non-crystalline material or nanocrystalline material.
2. EMC filter circuit according to claim 1, it is characterised in that the differential mode inductance (13) is including coiled wire-wound coil
(14) and magnetic material (15), the coiled wire-wound coil (14) internal, the differential mode inductance that is fixed on the magnetic material (15)
(13) it is integrally formed.
3. EMC filter circuit according to claim 2, it is characterised in that also include：Second electric capacity (16)；
The output end of the EMC filter circuit (10) is used to be connected with the ac input end of rectification circuit (20), second electricity
Hold (16) for being connected in parallel on the two ends of the DC output end of the rectification circuit (20).
4. a kind of electromagnetic oven, it is characterised in that including EMC filter circuit as claimed in claim 3 (10), rectification circuit
(20), resonance circuit (30), on-off circuit (40)；Wherein,
First electric capacity (11) is connected in parallel on mains supply two ends, the output end and rectification circuit of the EMC filter circuit (10)
(20) ac input end connection, second electric capacity (16) is connected in parallel on the two of the DC output end of the rectification circuit (20)
End, DC output end and the on-off circuit (40), the resonance circuit (30) of the rectification circuit (20) are sequentially connected, shape
Into current supply circuit.
5. electromagnetic oven according to claim 4, it is characterised in that also include：Protective tube (50), the mains supply and institute
State and be connected with protective tube (50) between the first electric capacity (11).
6. electromagnetic oven according to claim 5, it is characterised in that also include：Control circuit (60), the on-off circuit
(40) including IGBT circuits (41)；
The collector and emitter of the IGBT circuits (41) is connected in the current supply circuit；
Control circuit (60) is connected with the base stage of the IGBT circuits (41), for controlling leading for IGBT circuits (41)
Logical or shut-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621173535.XU CN206313657U (en) | 2016-11-02 | 2016-11-02 | EMC filter circuit and electromagnetism stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621173535.XU CN206313657U (en) | 2016-11-02 | 2016-11-02 | EMC filter circuit and electromagnetism stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206313657U true CN206313657U (en) | 2017-07-07 |
Family
ID=59243630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621173535.XU Expired - Fee Related CN206313657U (en) | 2016-11-02 | 2016-11-02 | EMC filter circuit and electromagnetism stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206313657U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3478026A1 (en) * | 2017-10-25 | 2019-05-01 | Electrolux Appliances Aktiebolag | Induction hob comprising an electromagnetic interference filter |
| CN111108812A (en) * | 2017-10-25 | 2020-05-05 | 伊莱克斯家用电器股份公司 | Induction hob comprising an electromagnetic interference filter |
-
2016
- 2016-11-02 CN CN201621173535.XU patent/CN206313657U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3478026A1 (en) * | 2017-10-25 | 2019-05-01 | Electrolux Appliances Aktiebolag | Induction hob comprising an electromagnetic interference filter |
| WO2019081189A1 (en) * | 2017-10-25 | 2019-05-02 | Electrolux Appliances Aktiebolag | Induction hob comprising an electromagnetic interference filter |
| CN111108812A (en) * | 2017-10-25 | 2020-05-05 | 伊莱克斯家用电器股份公司 | Induction hob comprising an electromagnetic interference filter |
| US20200253002A1 (en) * | 2017-10-25 | 2020-08-06 | Electrolux Appliances Aktiebolag | Induction hob comprising an electromagnetic interference filter |
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