CN205987435U - Low radiation electromagnetic heating device - Google Patents
Low radiation electromagnetic heating device Download PDFInfo
- Publication number
- CN205987435U CN205987435U CN201620944949.1U CN201620944949U CN205987435U CN 205987435 U CN205987435 U CN 205987435U CN 201620944949 U CN201620944949 U CN 201620944949U CN 205987435 U CN205987435 U CN 205987435U
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- CN
- China
- Prior art keywords
- common mode
- mode inductance
- low emissivity
- electromagnetic heater
- heater according
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 10
- 230000005855 radiation Effects 0.000 title abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 20
- 230000001681 protective effect Effects 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 7
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 13
- 239000000463 material Substances 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
The utility model discloses a low radiation electromagnetic heating device. Including electromagnetic heating main part and automatically controlled mainboard, automatically controlled mainboard includes filter circuit, and filter circuit includes power line connecting port, common mode inductance and X filter capacitance, common mode inductance establish ties in after the power line connecting port, X filter capacitance just connects in parallel between the zero line and live wire of power access end mouth after being located common mode inductance, and filter circuit sets up on circuit board. Through the utility model discloses above -mentioned common mode inductance's setting means just can reach the purpose of controlling the EMC performance, simple and practical, safe and reliable.
Description
Technical field
This utility model is related to Electromagnetic Heating field, particularly to Low emissivity electromagnetic heater.
Background technology
Electromagnetic heater generally has stronger electromagnetic interference, and electromagnetic interference has Conduction Interference and two kinds of radiation interference, passes
Lead interference to refer to by conductive carrier, the signal on one network be interfered with other network.Radiation interference refers to that interference source leads to
Cross space outerpace to interfere with signal in other network.For these interference, derive many filtering methods, for Conduction Interference
Acting on strong method can lead to radiation interference to strengthen, and is directed to the strong method of radiation interference effect and Conduction Interference can be led to strengthen.
For both the above interference, prior art mainly carries out the weakening to interference, the such as patent application of EMC filter by wave filter
Code 2006101317404 described in, Electromagnetic Heating filter circuit as described in patent application code 2015204068713, these filtered electrical
Road form obtains within the specific limits in electromagnetic heater.But, because the feature of electromagnetic heater, accordingly show
Shortcoming be：Limited filter capacity leads to its poor universality, for example, it may be possible to occur dominant frequency, 300KHz frequency range, 3MHz frequency range,
A certain exceeded in radiation, at this moment need the configuration of high cost could pass through EMC standard.And certain being closer to this utility model
House journal, if number of patent application is that as described in 2015206575568, its first described magnet ring is the magnetic of circuit board external hanging type
Ring although on the surface shell provide position of sound production, but essence its magnetic core on power supply winding position do not fix, can lead to
Radiation effect does not know, and especially conducting effect does not more know so as to product effect does not know, the good difference poor with effect of effect
Away from larger, or even do not meet national standard.This utility model is improved to its position, the layout again to magnet ring riding position
To meet the requirement of EMC.
Utility model content
The purpose of this utility model is to provide one kind.
For achieving the above object, this utility model adopts the following technical scheme that, Low emissivity electromagnetic heater, including electromagnetism
Heating body and automatically controlled mainboard, automatically controlled mainboard includes filter circuit, filter circuit include power line access interface, common mode inductance and
X filter capacitor, after common mode inductance is series at described power line access interface, after X filter capacitor is located at common mode inductance and simultaneously
It is coupled between zero line and the live wire of plant-grid connection port, filter circuit is arranged on circuit main board.Above-mentioned by this utility model
The setting means of common mode inductance, just can reach the purpose controlling EMC performance, simple and practical, safe and reliable.
In some embodiments, also include protective tube, protective tube is connected with filter circuit.Setting protective tube, ensures electricity
Road safety.
In some embodiments, common mode inductance is series between protective tube and X filter capacitor.Common mode inductance is series at guarantor
Between danger pipe and described X filter capacitor, improve Conduction Interference and the effect of radiation interference is ideal.
In some embodiments, common mode inductance is series between power input port and protective tube.Common mode inductance is connected
Between power input port and protective tube, improve Conduction Interference and the effect of radiation interference is ideal.
In some embodiments, common mode inductance forms for multiple inductor combination.Multiple common mode inductances combining change
The effect of kind Conduction Interference and radiation interference is ideal.
In some embodiments, common mode inductance is ferrite bead.Ferrite bead improves Conduction Interference and radiation is dry
The effect disturbed is ideal.
In some embodiments, common mode inductance sensibility reciprocal is 1～20uH.Inductance in the range of 1～20uH inductance sensibility reciprocal,
Improve Conduction Interference and the effect of radiation interference is ideal.
In some embodiments, common mode inductance winding turns are 2～3 circles.The inductance that the winding turns of 2～3 circles are made,
Improve Conduction Interference and the effect of radiation interference is ideal.
The beneficial effects of the utility model are：This utility model Low emissivity electromagnetic heater is reasonable in design, using effect
Good, substantially increase filtering performance and the anti-electromagnetic interference capability of electromagnetic heater, and effectively control EMC signal,
Reduce on the basis of adding electromagnetic oven mainboard cost as far as possible, accomplish to improve EMC signal, structure is simple, safe and reliable, easy for installation,
Also there is certain mark action simultaneously.
Brief description
Fig. 1 is the electrical block diagram of this utility model Low emissivity electromagnetic heater；
Fig. 2 is the electrical block diagram of this utility model embodiment 2；
Fig. 3 is the electrical block diagram of this utility model embodiment 3.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in further detail.
Embodiment 1
As shown in figure 1, Low emissivity electromagnetic heater, including power input port (L, N), common mode inductance L3, X filtered electrical
Hold C2, in addition, follow-up circuit key component also should include common mode inductance L2, commutator DB1, differential mode inductance L1, X
Filter capacitor C1, and whole Electromagnetic Heating main body a1.
Fig. 1 illustrates partial circuit connection figure, and L, N are respectively two input terminals of power input port, common mode inductance L3
It is series between power input port and X filter capacitor C2.1 foot of common mode inductance L3 input is connected with input terminal N, common mode
2 feet of inductance L3 outfan are connected with second end (electric capacity lower end as shown in Figure 1) of X filter capacitor C2, and common mode inductance L3 exports
End 3 feet be connected with the first end (electric capacity upper end as shown in Figure 1) of X filter capacitor C2,4 feet of common mode inductance L3 input with defeated
Enter terminal L to be connected.After common mode inductance L2 is connected on X filter capacitor C2 successively, equally it is series between zero line and live wire.Common mode electricity
Feel outfan 2 foot of L2 and 3 feet (as shown in Figure 1) are connected to the input of commutator DB1 respectively.X filter capacitor C1 is parallel to whole
The outfan of stream device DB1, and differential mode inductance L1 is then placed between commutator DB1 and X filter capacitor C1, is connect in the form of connecting
Enter between commutator DB1 mono- outfan and the first end (electric capacity upper end as shown in Figure 1) of X filter capacitor C1, access thereafter whole
Electromagnetic Heating main body a1.
The winding turns of common mode inductance L3 should be 2 circles.Within this range, obtained test result is more satisfied.
The sensibility reciprocal of common mode inductance L3 should be 1H.
The magnet ring material of common mode inductance L3 is made up of nickel-zinc ferrite etc..These materials to be mainly characterized by resistivity long-range
In metallicl magnetic material, this can suppress the generation being vortexed.
Embodiment 2
As shown in Fig. 2 protective tube F1 is series in the circuit after input terminal L, the one of input terminal L and protective tube F1
End is connected.In turn, common mode inductance L3 is series between protective tube F1 and X filter capacitor C2.And, common mode inductance L3 input
1 foot be connected with input terminal N, the second end (electric capacity as shown in Figure 2 of 2 feet of common mode inductance L3 outfan and X filter capacitor C2
Lower end) it is connected, 3 feet of common mode inductance L3 outfan are connected with the first end (electric capacity upper end as shown in Figure 2) of X filter capacitor C2,
4 feet of common mode inductance L3 input are connected with the other end of protective tube F1.In the middle of embodiment 2 as shown in Figure 2, make EMC signal
Relatively stable.
The winding turns of common mode inductance L3 should be 3 circles.Within this range, obtained test result is more satisfied.
The sensibility reciprocal of common mode inductance L3 should be 20H.
The magnet ring material of common mode inductance L3 is made up of nickel-zinc ferrite etc..These materials to be mainly characterized by resistivity long-range
In metallicl magnetic material, this can suppress the generation being vortexed.
Embodiment 3
As shown in figure 3, common mode inductance L3 is series between power input port and protective tube F1.Common mode inductance L3 input
1 foot be connected with input terminal N, the second end (electric capacity as shown in Figure 3 of 2 feet of common mode inductance L3 outfan and X filter capacitor C2
Lower end) it is connected, 3 feet of common mode inductance L3 outfan are connected with one end of protective tube F1, the other end of protective tube F1 and X filtered electrical
The first end (electric capacity upper end as shown in Figure 3) holding C2 is connected, and 4 feet of common mode inductance L3 input are connected with input terminal L.This becomes
The EMC signal that type example is tested is equally relatively stable.
The winding turns of common mode inductance L3 should be 2 circles.Within this range, obtained test result is more satisfied.
The sensibility reciprocal of common mode inductance L3 should be 10H.
The magnet ring material of common mode inductance L3 is made up of nickel-zinc ferrite etc..These materials to be mainly characterized by resistivity long-range
In metallicl magnetic material, this can suppress the generation being vortexed.
The Low emissivity electromagnetic heater of three embodiments according to Fig. 1, Fig. 2, Fig. 3, can suppression common mode effectively
Signal, to reach test request.If only one of which common mode inductance L2 in circuit diagram, its filtering common mode signal capabilities limited it is impossible to
Reach test request.And the other end in its X filter capacitor C2 adds a common mode inductance L3, and do not need too many around the number of turns
The purpose of filtering common mode signal just can be reached.
This utility model Low emissivity electromagnetic heater is reasonable in design, and using effect is good, substantially increases Electromagnetic Heating dress
The filtering performance put and anti-electromagnetic interference capability, and effectively control EMC signal, add electromagnetic oven mainboard cost reducing as far as possible
On the basis of, accomplish to improve EMC signal, structure is simple, safe and reliable, easy for installation, also has certain mark action simultaneously
Above-described is only some embodiments of the present utility model.For the person of ordinary skill of the art,
On the premise of creating design without departing from this utility model, some deformation can also be made and improve, these broadly fall into this practicality
New protection domain.
Claims (8)
1. Low emissivity electromagnetic heater, including Electromagnetic Heating main body and automatically controlled mainboard, described automatically controlled mainboard includes filter circuit,
Described filter circuit includes power line access interface, common mode inductance and X filter capacitor it is characterised in that described common mode inductance string
After being coupled to power line access interface, described X filter capacitor and is parallel to the zero of plant-grid connection port after common mode inductance
Between line and live wire, described filter circuit is arranged on circuit main board.
2. Low emissivity electromagnetic heater according to claim 1 is it is characterised in that also include protective tube, described insurance
Pipe is connected with filter circuit.
3. Low emissivity electromagnetic heater according to claim 2 is it is characterised in that described common mode inductance is series at insurance
Between pipe and X filter capacitor.
4. Low emissivity electromagnetic heater according to claim 2 is it is characterised in that described common mode inductance is series at power supply
Between input port and protective tube.
5. Low emissivity electromagnetic heater according to claim 1 is it is characterised in that described common mode inductance is multiple inductance
Combine.
6. Low emissivity electromagnetic heater according to claim 1 is it is characterised in that described common mode inductance is ferrite magnetic
Ring.
7. Low emissivity electromagnetic heater according to claim 1 it is characterised in that described common mode inductance sensibility reciprocal be 1～
20uH.
8. Low emissivity electromagnetic heater according to claim 1 is it is characterised in that described common mode inductance winding turns are
2～3 circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620944949.1U CN205987435U (en) | 2016-08-25 | 2016-08-25 | Low radiation electromagnetic heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620944949.1U CN205987435U (en) | 2016-08-25 | 2016-08-25 | Low radiation electromagnetic heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205987435U true CN205987435U (en) | 2017-02-22 |
Family
ID=58035457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620944949.1U Expired - Fee Related CN205987435U (en) | 2016-08-25 | 2016-08-25 | Low radiation electromagnetic heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205987435U (en) |
-
2016
- 2016-08-25 CN CN201620944949.1U patent/CN205987435U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 |