CN206922432U - A kind of EMC filter circuit with metal shell Electromagnetic Heating product - Google Patents
A kind of EMC filter circuit with metal shell Electromagnetic Heating product Download PDFInfo
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- CN206922432U CN206922432U CN201720792723.9U CN201720792723U CN206922432U CN 206922432 U CN206922432 U CN 206922432U CN 201720792723 U CN201720792723 U CN 201720792723U CN 206922432 U CN206922432 U CN 206922432U
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- Prior art keywords
- capacitance
- electromagnetic heating
- metal shell
- electric capacity
- filter circuit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Control Of High-Frequency Heating Circuits (AREA)
- Control Of Resistance Heating (AREA)
- Filters And Equalizers (AREA)
Abstract
The utility model discloses a kind of EMC filter circuit with metal shell Electromagnetic Heating product, for high-power metallic shell electromagnetic heating apparatus, including the first Y capacitance and the second Y capacitance, the first end of first Y capacitance and the second Y capacitance connects the two-phase power supply line to the power supply of Electromagnetic Heating main circuit respectively, first Y capacitance connects the metal shell of electromagnetic oven with the second end of the second Y capacitance, and metal shell via the first inductance with connecing power supply.The utility model can solve the problems, such as that the common-mode noise of the electromagnetic heating apparatus such as electromagnetic oven is big, reach EMC requirement, and cost is relatively low.
Description
Technical field
Daily electronics field is the utility model is related to, more particularly to one kind is used for high-power metallic shell Electromagnetic Heating
The EMC filter circuit of product.
Background technology
The electromagnetic heating apparatus such as electromagnetic oven, micro-wave oven and other electromagnetic heaters on the market at present, with power, frequency
The increase of rate, common-mode noise increase is a lot, causes EMC exceeded.To ensure electromagnetic heating apparatus normal work, it usually needs set
EMC (electromagnetic compatibility) circuit, to filter out the external electromagnetic interference introduced from power line, together
When avoid product from sending noise jamming to outside in itself influenceing the normal work of other electronic equipments under same electromagnetic environment.
Now conventional EMC circuits such as Fig. 1, in figure, L2, C1, C4 form common mode filtering circuit, and suppression is played to common mode interference signal
Only act on, L1, C2, C3 form differential mode filter circuit, play supression to difference mode signal.C1, C4 are safety electric capacity, and one terminates
Shell, safety electric capacity can not be excessive, can not be solved so common mode is exceeded by increasing C1, C4 capacity merely, Fig. 1 is unable to reach institute
The EMC needed requirement.And the component involved by the EMC circuits of other requirements that can reach required EMC is more, cost compared with
It is high.
Utility model content
The technical problems to be solved in the utility model is, for the drawbacks described above of prior art, there is provided one kind is used for big
The EMC filter circuit of power metal shell electromagnetic heating apparatus.
Technical scheme is used by the utility model solves its technical problem：A kind of band metal shell Electromagnetic Heating of construction
The EMC filter circuit of product, for high-power metallic shell electromagnetic heating apparatus, including the first Y capacitance and the second Y capacitance,
The first end of one Y capacitance and the second Y capacitance connects the two-phase power supply line to the power supply of Electromagnetic Heating main circuit, the first Y capacitance respectively
Connect the metal shell of electromagnetic oven with the second end of the second Y capacitance, and metal shell via the first inductance with connecing power supply.
Wherein, the circuit also includes the second inductance and the first electric capacity, and one end of first electric capacity is via described second
The first end of first Y capacitance described in inductance connection, the other end of first electric capacity connect the first end company of second Y capacitance
Connect, two power inputs that the both ends of first electric capacity power as the Electromagnetic Heating main circuit.
Wherein, the circuit also includes common mode choke, and the input connection live wire of the common mode choke is described
Another input connection zero line of common mode choke, two output ends of the common mode choke respectively with the first Y capacitance and the
The first end of two Y capacitances is connected, and the second electric capacity is connected between two inputs of the common mode choke.
Implement the EMC filter circuit of the present utility model with metal shell Electromagnetic Heating product, have the advantages that：
The utility model for the common-mode noise of the electromagnetic heating apparatus such as electromagnetic oven it is big the problem of, the earth terminal of Y capacitance is connected into electromagnetism
The metal shell of stove, and by metal shell by inductance with connecing power supply, reached EMC requirement, and cost is relatively low.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to the accompanying drawing of offer：
Fig. 1 is the structural representation of EMC filter circuit in the prior art；
Fig. 2 is the structural representation of the EMC filter circuit in preferred embodiment of the present utility model.
Embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.Exemplary embodiments of the present utility model are given in accompanying drawing.But the utility model can come in fact in many different forms
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model
Open content more thorough and comprehensive.
It should be noted that word " connected " or " connection ", not only include two entities being joined directly together, also include logical
Cross and be indirectly connected with other entities beneficial to improvement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model
The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include
The arbitrary and all combination of one or more related Listed Items.
The term comprising ordinal number such as " first " that is used in this specification, " second " can be used for illustrating various inscapes,
But these inscapes are not limited by these terms.It is only that using the purpose of these terms and distinguishes an inscape
In other inscapes.For example, on the premise of the interest field of the present invention is not departed from, the first inscape can be named as the
Two inscapes, similarly, the second inscape can also be named as the first inscape.
The total thinking of the utility model is：The earth terminal of Y capacitance connects to the metal shell of electromagnetic oven, and by metal shell
By inductance with connecing power supply, so as to reaching EMC requirement.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
State technical scheme to be described in detail, it should be understood that the specific features in the utility model embodiment and embodiment are to this
Apply for the detailed description of technical scheme, rather than the restriction to technical scheme, in the case where not conflicting, this practicality
Technical characteristic in new embodiment and embodiment can be mutually combined.
It is the EMC filtered electricals with metal shell Electromagnetic Heating product in preferred embodiment of the present utility model with reference to figure 2
The structural representation on road.
In preferred embodiment, the EMC filter circuit with metal shell Electromagnetic Heating product includes：First Y capacitance C5, second
Y capacitance C8, the first inductance L5, the second inductance L3, the first electric capacity C6, common mode choke L4, the second electric capacity C7.
Wherein, the input connection live wire AC/L2 of the common mode choke L4, the common mode choke L4's is another
Individual input connects zero line AC/N2, and the second electric capacity C7 is connected between common mode choke L4 two inputs, described common
First end of mould choke coil L4 two output ends respectively with the first Y capacitance C5 and the second Y capacitance C8 is connected, the first Y capacitance C5 and
Second Y capacitance C8 the second end connection electromagnetic oven metal shell, and metal shell via the first inductance L5 with connecing power supply.It is described
First electric capacity C6 one end is via the first end of the second inductance L3 connections the first Y capacitance C5, the first electric capacity C6
The other end connect the first end connection of the second Y capacitance C8, the both ends of the first electric capacity C6 are as the Electromagnetic Heating
Two power inputs of main circuit power supply, in two power inputs and figure between common mode choke L4 two output ends
Circuit be the two-phase power supply line that is previously mentioned.
Wherein, common mode choke L4, the first Y capacitance C5, the second Y capacitance C8 form common mode filtering circuit, to common mode disturbances
Signal plays supression, and the second inductance L3, the first electric capacity C6, the second electric capacity C7 form differential mode filter circuit, difference mode signal risen
Supression acts on.Because Y capacitance is required by safety, it is impossible to which excessive, the utility model by the earth terminal of Y capacitance by connecting electromagnetic oven
Metal shell, and by metal shell by inductance with connecing power supply, reached EMC requirement, and cost is relatively low.
In summary, implement the EMC filter circuit of the present utility model with metal shell Electromagnetic Heating product, have following
Beneficial effect：The utility model for the common-mode noise of the electromagnetic heating apparatus such as electromagnetic oven it is big the problem of, by the earth terminal of Y capacitance
Connect the metal shell of electromagnetic oven, and by metal shell by inductance with connecing power supply, reached EMI requirement, and cost compared with
It is low.
Embodiment of the present utility model is described above in conjunction with accompanying drawing, but the utility model is not limited to
The embodiment stated, above-mentioned embodiment is only schematical, rather than restricted, this area it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under enlightenment of the present utility model
Under, many forms can be also made, these are belonged within protection of the present utility model.
Claims (4)
1. a kind of EMC filter circuit with metal shell Electromagnetic Heating product, for high-power metallic shell electromagnetic heating apparatus,
Including the first Y capacitance and the second Y capacitance, the first end of the first Y capacitance and the second Y capacitance connects respectively gives Electromagnetic Heating main circuit
The two-phase power supply line of power supply, it is characterised in that the first Y capacitance connects the metal shell of electromagnetic oven with the second end of the second Y capacitance,
And metal shell via the first inductance with connecing power supply.
2. the EMC filter circuit according to claim 1 with metal shell Electromagnetic Heating product, it is characterised in that described
Circuit also includes the second inductance and the first electric capacity, and one end of first electric capacity is via the first Y described in second inductance connection
The first end of electric capacity, the other end of first electric capacity connect the first end connection of second Y capacitance, first electric capacity
Two power inputs that both ends power as the Electromagnetic Heating main circuit.
3. the EMC filter circuit according to claim 1 with metal shell Electromagnetic Heating product, it is characterised in that described
Circuit also includes common mode choke, the input connection live wire of the common mode choke, the common mode choke it is another
Individual input connects zero line, and two output ends of the common mode choke connect with the first end of the first Y capacitance and the second Y capacitance respectively
Connect.
4. the EMC filter circuit according to claim 3 with metal shell Electromagnetic Heating product, it is characterised in that described
The second electric capacity is connected between two inputs of common mode choke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720792723.9U CN206922432U (en) | 2017-07-03 | 2017-07-03 | A kind of EMC filter circuit with metal shell Electromagnetic Heating product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720792723.9U CN206922432U (en) | 2017-07-03 | 2017-07-03 | A kind of EMC filter circuit with metal shell Electromagnetic Heating product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206922432U true CN206922432U (en) | 2018-01-23 |
Family
ID=61335536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720792723.9U Active CN206922432U (en) | 2017-07-03 | 2017-07-03 | A kind of EMC filter circuit with metal shell Electromagnetic Heating product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206922432U (en) |
-
2017
- 2017-07-03 CN CN201720792723.9U patent/CN206922432U/en active Active
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