CN206237299U - The control device and household electrical appliance of electromagnetic compatibility filter circuit, Electromagnetic Heating household electrical appliances - Google Patents
The control device and household electrical appliance of electromagnetic compatibility filter circuit, Electromagnetic Heating household electrical appliances Download PDFInfo
- Publication number
- CN206237299U CN206237299U CN201621364706.7U CN201621364706U CN206237299U CN 206237299 U CN206237299 U CN 206237299U CN 201621364706 U CN201621364706 U CN 201621364706U CN 206237299 U CN206237299 U CN 206237299U
- Authority
- CN
- China
- Prior art keywords
- mode inductance
- differential mode
- power
- electromagnetic compatibility
- filter circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Cookers (AREA)
Abstract
The utility model is related to electromagnetic compatibility technical field of filtering, disclose the control device and household electrical appliance of a kind of electromagnetic compatibility filter circuit, Electromagnetic Heating household electrical appliances, solve and differential mode inductance only is set in the live wire of AC power or zero line side, cause to be not provided with the problem of the conduction examination effect difference of the opposite side of the AC power of differential mode inductance.The circuit includes the first differential mode inductance and the second differential mode inductance, the first end of first differential mode inductance connects the first input end of AC power, the first end of second differential mode inductance connects the second input of the AC power, and load is adapted between the second end of second differential mode inductance and the second end of first differential mode inductance.The utility model embodiment is suitable for electromagnetic compatibility filtering.
Description
Technical field
The utility model is related to electromagnetic compatibility technical field of filtering, in particular it relates to a kind of electromagnetic compatibility filter circuit, electricity
Magnetic heats the control device and household electrical appliance of household electrical appliances.
Background technology
Electromagnetic compatibility (Electro Magnetic Compatibility, EMC) be to electronic product in terms of electromagnetic field
The Comprehensive Assessment of interference size and antijamming capability, is one of most important index of product quality.Electromagnetic compatibility test is divided into electricity
Magnetic harassing and wrecking test and electromagnetic immunity test, wherein electromagnetic disturbance test have EMC emission test and conducted emission test etc..
National regulation, electromagnetic oven must also is fulfilled for EMC requirements.Current electromagnetic oven in order to suppress conduction interference, as shown in figure 1, typically
One differential mode inductance can be set in the live wire side of AC power, or as shown in Fig. 2 be set in the zero line side of AC power
One differential mode inductance.The method for so individually setting differential mode inductance in the live wire of AC power or zero line side, can cause to set
The side conduction test effect of differential mode inductance is good, and is not provided with the problem of the side conduction test effect difference of differential mode inductance.
Utility model content
Embodiment of the present utility model be to provide a kind of electromagnetic compatibility filter circuit, the control device of Electromagnetic Heating household electrical appliances and
Household electrical appliance, solve and only set differential mode inductance in the live wire of AC power or zero line side, cause to be not provided with differential mode inductance
AC power opposite side conduction examination effect difference problem.
To achieve these goals, the utility model embodiment is adopted the following technical scheme that：
The utility model provides a kind of electromagnetic compatibility filter circuit, including the first differential mode inductance and the second differential mode inductance,
The first end of first differential mode inductance connects the first input end of AC power, the first end connection of second differential mode inductance
Second input of the AC power, the second end of the second end of second differential mode inductance and first differential mode inductance it
Between be adapted to load.
Optionally, in the first input end of the AC power and the second input is the live wire of AC power,
Another is the zero line of AC power.
Optionally, the circuit also includes common mode inductance, and the first input end of the common mode inductance connects the alternating current
The first input end in source, the second input of the common mode inductance connects the second input of the AC power, the common mode
First output end of inductance connects the first end of first differential mode inductance, and the second output end connection of the common mode inductance is described
The first end of the second differential mode inductance.
Optionally, the circuit also includes the first electric capacity, and first capacitance connection is first defeated the AC power
Enter between end and the second input.
Optionally, the circuit also includes the second electric capacity, second capacitance connection in first differential mode inductance the
Between the first end of one end and second differential mode inductance.
Optionally, the circuit also includes the 3rd electric capacity, the 3rd capacitance connection in second differential mode inductance the
Between second end of two ends and first differential mode inductance.
Optionally, first electric capacity, the second electric capacity and the 3rd electric capacity are nonpolar electric capacity.
The utility model also provides a kind of control device of Electromagnetic Heating household electrical appliances, comprising electromagnetic compatibility as described above filtering
Circuit, also comprising electrical control unit, the electrical control unit is used to control as the load of the electromagnetic compatibility filter circuit
Electromagnetic Heating processed.
The utility model also provides a kind of household electrical appliance, and the household electrical appliance include electromagnetic compatibility filtered electrical as described above
Road.
Optionally, the household electrical appliance are electromagnetic oven, electric cooker, electric pressure cooking saucepan, electric cooking pot, soy bean milk making machine, coffee machine, laundry
Any one in machine, refrigerator, air-conditioning, smoke exhaust ventilator, electric heater, water dispenser, dust catcher or mixer.
By above-mentioned technical proposal, differential mode inductance is provided with the zero line of AC power and live wire both sides, it is ensured that
When carrying out conduction test, the test of AC power both sides works well.
Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is further understood to of the present utility model for providing, and constitutes a part for specification, and following
Specific embodiment be used to explain the utility model together, but do not constitute to limitation of the present utility model.In the accompanying drawings：
Fig. 1 is to set a circuit diagram for differential mode inductance in the live wire side of AC power in the prior art；
Fig. 2 is to set a circuit diagram for differential mode inductance in the zero line side of AC power in the prior art；
Fig. 3 is a kind of circuit diagram of electromagnetic compatibility filter circuit that the utility model embodiment is provided；
Fig. 4 is the circuit diagram of another electromagnetic compatibility filter circuit that the utility model embodiment is provided；
Fig. 5 is the circuit diagram of another electromagnetic compatibility filter circuit that the utility model embodiment is provided；
Fig. 6 is the circuit diagram of another electromagnetic compatibility filter circuit that the utility model embodiment is provided；
Fig. 7 is the circuit diagram of the yet a further electromagnetic compatibility filter circuit that the utility model embodiment is provided；
Fig. 8 is the circuit diagram of still another electromagnetic compatibility filter circuit that the utility model embodiment is provided；
Fig. 9 is a kind of schematic diagram of the control device of Electromagnetic Heating household electrical appliances that the utility model embodiment is provided.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein
Described specific embodiment is merely to illustrate and explains the utility model, is not limited to the utility model.
A kind of electromagnetic compatibility filter circuit that the utility model embodiment is provided, as shown in figure 3, including the first differential mode inductance
The first end of L2 and the second differential mode inductance L3, the first differential mode inductance L2 connects the first input end of AC power, and described the
The first end of two differential mode inductance L3 connects the second input of the AC power, second end of the second differential mode inductance L3 with
Load is adapted between second end of the first differential mode inductance L2.
By above-mentioned technical proposal, differential mode inductance is provided with the zero line of AC power and live wire both sides, it is ensured that
When carrying out conduction test, the test of AC power both sides works well.
Wherein, in the first input end of the AC power and the second input is the live wire of AC power, separately
One is the zero line of AC power.
As shown in figure 4, first input end connection of the circuit also including common mode inductance L1, the common mode inductance L1 is described
The first input end of AC power, second input of the common mode inductance L1 connects the second input of the AC power,
First output end of the common mode inductance L1 connects the first end of the first differential mode inductance L2, the second of the common mode inductance L1
Output end connects the first end of the second differential mode inductance L3, by the common mode disturbances in common mode inductance L1 filtering circuits.
As shown in Figure 5 or Figure 6, the circuit is also connected to the exchange including the first electric capacity C1, the first electric capacity C1
Between the first input end of power supply and the second input, the first electric capacity C1 is used to filter, and sets need according to circuit requirement
Seek the electric capacity of capacitance.The circuit can not include common mode inductance as shown in Figure 5, it is also possible to include common mode electricity as shown in Figure 6
Sense, does not limit here, can according to demand set circuit layout.
As shown in fig. 7, the circuit also includes that the second electric capacity C2, the second electric capacity C2 is connected to the first differential mode electricity
Between the first end of the first end of sense and second differential mode inductance.The second electric capacity C2 is also used to filter, and according to circuit
It is required that the electric capacity of setting demand capacitance.
As shown in figure 8, the circuit also includes the 3rd electric capacity C3, the 3rd capacitance connection is in second differential mode inductance
The second end and the second end of first differential mode inductance between.
In addition, first electric capacity, the second electric capacity and the 3rd electric capacity are the X-type safety electric capacity in nonpolar electric capacity.Institute
It is that after capacitor failure, will not cause electric shock to state safety electric capacity, and the capacitor of personal safety is not jeopardized.The X-type electric capacity is
The electric capacity between AC power live wire and AC power zero line is connected across, suppresses DM EMI.In electronic circuit, capacitor is used
To intercept direct current by exchange, also for storing and discharging electric charge to serve as wave filter, output ripple signal is smoothed.Capacitor
In AC power, capacitor continuously charges, discharges, and will pass through consistent with alternating current Changing Pattern in circuit, and phase is not
Same charging current and discharge current.The capacitance of capacitor is bigger, and impedance is smaller, and the frequency for passing through is also higher.If electric capacity
The capacitance of device is infinitely great, then capacitor is equivalent to path, if the capacitance of capacitor is infinitely small, capacitor is equivalent to
Open circuit.In filter circuit, the effect of capacitor is exactly to intercept low frequency by high frequency.The bigger low frequency of capacitance of capacitor is more not
Easily by above-mentioned first electric capacity, the second electric capacity and the 3rd electric capacity can set the electric capacity of demand capacitance according to circuit requirement.
Further, since safety requirement, as shown in figure 8, connecting current insurance pipe FUSE on the live wire of AC power.It is described
Current insurance pipe FUSE is that safety requirement is arranged on the live wire of the AC power.When current insurance pipe is powered, turned by electric energy
The heat for changing rises the temperature of fusable links.When running current or the overload current of permission pass through, the heat of generation passes through
Fusable links, shell body are progressivelyed reach to ambient radiation by the modes such as convection current, the conduction heat for distributing and the heat for producing
Balance.If the heat for producing is more than the heat for distributing, unnecessary heat is just gradually accumulated in fusable links, makes fusible temperature
Rise, when temperature reaches and exceeds the fusing point of fusable links, will melt fusable links, fuse and cut off electric current, serve peace
The effect of full protection circuit.
As shown in figure 9, embodiment of the present utility model also provides a kind of control device 90 of Electromagnetic Heating household electrical appliances, comprising such as
Upper described electromagnetic compatibility filter circuit 91, also including electrical control unit 92, the electrical control unit is used as the electromagnetism
The load of compatible filter circuit is used to control Electromagnetic Heating.
Embodiment of the present utility model also provides a kind of household electrical appliance, and the household electrical appliance are simultaneous comprising electromagnetism as described above
Capacitor filter circuit.
The household electrical appliance are electromagnetic oven, electric cooker, electric pressure cooking saucepan, electric cooking pot, soy bean milk making machine, coffee machine, washing machine, ice
Any one in case, air-conditioning, smoke exhaust ventilator, electric heater, water dispenser, dust catcher or mixer.
Preferred embodiment of the present utility model is described in detail above in association with accompanying drawing, but, the utility model is not limited
Detail in above-mentioned implementation method, in range of the technology design of the present utility model, can be to skill of the present utility model
Art scheme carries out various simple variants, and these simple variants belong to protection domain of the present utility model.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the utility model is to each
Possible combination is planted no longer separately to illustrate.
Additionally, can also be combined between a variety of implementation methods of the present utility model, as long as it is not disobeyed
Thought of the present utility model is carried on the back, it should equally be considered as content disclosed in the utility model.
Claims (10)
1. a kind of electromagnetic compatibility filter circuit, it is characterised in that including the first differential mode inductance and the second differential mode inductance, described first
The first end of differential mode inductance connects the first input end of AC power, and the first end of second differential mode inductance connects the exchange
It is suitable to connect between second end of the second input of power supply, the second end of second differential mode inductance and first differential mode inductance
Connect load.
2. electromagnetic compatibility filter circuit according to claim 1, it is characterised in that the first input end of the AC power
It is the live wire of AC power with the second input, another is the zero line of AC power.
3. electromagnetic compatibility filter circuit according to claim 2, it is characterised in that the circuit also includes common mode inductance,
The first input end of the common mode inductance connects the first input end of the AC power, the second input of the common mode inductance
Connect the second input of the AC power, the first output end of the common mode inductance connects the of first differential mode inductance
One end, the second output end of the common mode inductance connects the first end of second differential mode inductance.
4. electromagnetic compatibility filter circuit according to claim 2, it is characterised in that the circuit also includes the first electric capacity,
First capacitance connection is between the first input end and the second input of the AC power.
5. electromagnetic compatibility filter circuit according to claim 4, it is characterised in that the circuit also includes the second electric capacity,
Second capacitance connection is between the first end of first differential mode inductance and the first end of second differential mode inductance.
6. electromagnetic compatibility filter circuit according to claim 5, it is characterised in that the circuit also includes the 3rd electric capacity,
3rd capacitance connection is between the second end of the second end of second differential mode inductance and first differential mode inductance.
7. electromagnetic compatibility filter circuit according to claim 6, it is characterised in that first electric capacity, second electricity
Hold and the 3rd electric capacity is nonpolar electric capacity.
8. a kind of control device of Electromagnetic Heating household electrical appliances, it is characterised in that comprising the electromagnetic compatibility according to claim 1-7
Filter circuit, also comprising electrical control unit, the electrical control unit is used as the load of the electromagnetic compatibility filter circuit
In control Electromagnetic Heating.
9. a kind of household electrical appliance, it is characterised in that the household electrical appliance include the electromagnetic compatibility filter according to claim 1-7
Wave circuit.
10. household electrical appliance according to claim 9, it is characterised in that the household electrical appliance are electromagnetic oven, electric cooker, electricity
Pressure cooker, electric cooking pot, soy bean milk making machine, coffee machine, washing machine, refrigerator, air-conditioning, smoke exhaust ventilator, electric heater, water dispenser, dust catcher
Or any one in mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364706.7U CN206237299U (en) | 2016-12-13 | 2016-12-13 | The control device and household electrical appliance of electromagnetic compatibility filter circuit, Electromagnetic Heating household electrical appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364706.7U CN206237299U (en) | 2016-12-13 | 2016-12-13 | The control device and household electrical appliance of electromagnetic compatibility filter circuit, Electromagnetic Heating household electrical appliances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206237299U true CN206237299U (en) | 2017-06-09 |
Family
ID=58991932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621364706.7U Expired - Fee Related CN206237299U (en) | 2016-12-13 | 2016-12-13 | The control device and household electrical appliance of electromagnetic compatibility filter circuit, Electromagnetic Heating household electrical appliances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206237299U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212752A (en) * | 2019-05-30 | 2019-09-06 | 上海航键航空设备有限公司 | A kind of noise reduction filtering circuit |
-
2016
- 2016-12-13 CN CN201621364706.7U patent/CN206237299U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212752A (en) * | 2019-05-30 | 2019-09-06 | 上海航键航空设备有限公司 | A kind of noise reduction filtering circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205657861U (en) | Electromagnetic heating cooks device and drive circuit thereof | |
| CN206226275U (en) | Switching Power Supply output filter unit, filter circuit and household electrical appliance | |
| CN206237299U (en) | The control device and household electrical appliance of electromagnetic compatibility filter circuit, Electromagnetic Heating household electrical appliances | |
| CN206379725U (en) | Filter circuit, Electromagnetic Heating Household appliance control circuit and household electrical appliance | |
| CN106136843B (en) | Cooking apparatus and electric heater unit for cooking apparatus | |
| CN207801880U (en) | Electromagnetic interference EMI suppression circuits, DC power supply and electrical heating utensil | |
| CN108075637A (en) | EMC filter circuit, electromagnetic heating Household appliance control circuit and household electrical appliance | |
| CN203785025U (en) | Wide-voltage constant-power electromagnetic oven | |
| CN206302337U (en) | EMC filter circuit, Electromagnetic Heating Household appliance control circuit and household electrical appliance | |
| CN208158423U (en) | Electromagnetic interference EMI suppression circuit, DC power supply and electric heating utensil | |
| CN208571917U (en) | High-voltage large-capacity charging circuit and air conditioner | |
| CN208174531U (en) | Electromagnetic compatibility filter circuit, DC power supply and household electrical appliance | |
| CN208174532U (en) | Electromagnetic compatibility filter circuit, DC power supply and electric heating utensil | |
| CN206834982U (en) | Filter circuit, electromagnetic heating circuit and household electrical appliance | |
| CN208128133U (en) | Electromagnetic interference EMI suppression circuit, DC power supply and electric heating utensil | |
| CN208227365U (en) | Electromagnetic interference EMI suppression circuit, DC power supply and electric heating utensil | |
| CN208272851U (en) | Electromagnetic compatibility filter circuit, DC power supply and electric heating utensil | |
| CN208209815U (en) | Electromagnetic interference EMI suppression circuit, DC power supply and electric heating utensil | |
| CN206542589U (en) | Detection is by the circuit and electromagnetic heating apparatus and household electrical appliance of heater | |
| CN203273975U (en) | Commercial electromagnetic oven having refrigeration system | |
| CN206251364U (en) | The power supply input circuit and household electrical appliance of household electrical appliance | |
| CN206595891U (en) | Household electrical appliance and its electromagnetic interference suppression circuit | |
| CN206310551U (en) | Anti-interference Electromagnetic Heating electrical equipment | |
| CN216650039U (en) | Electromagnetic induction heating circuit and electromagnetic heating equipment | |
| CN208128134U (en) | Electromagnetic interference EMI suppression circuit, DC power supply and electric heating utensil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170609 Termination date: 20211213 |