CN205430051U - Mixer and be used for electromagnetic interference suppressing circuit of mixer - Google Patents
Mixer and be used for electromagnetic interference suppressing circuit of mixer Download PDFInfo
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- CN205430051U CN205430051U CN201620213604.9U CN201620213604U CN205430051U CN 205430051 U CN205430051 U CN 205430051U CN 201620213604 U CN201620213604 U CN 201620213604U CN 205430051 U CN205430051 U CN 205430051U
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Abstract
The utility model discloses a mixer and be used for electromagnetic interference suppressing circuit of mixer, the circuit includes: the connection is at the alternating current power supply's of input zero line and first the suppressions unit between the live wire, and it is used for restraining the surge interference that comes from alternating current power supply, first wave filter, its first input end and second input connect in parallel at the both ends of first suppression unit, first wave filter through restrain differential mode interference and common mode interference with the suppression come from alternating current power supply to the interference of back level circuit with restrain the interference of back level circuit to alternating current power supply, wherein, a back grade circuit includes the motor, the second restraines the unit, and its first end links to each other with the first output of first wave filter, and its second end links to each other with the second output of first wave filter, and the second restraines the third termination ground wire of unit, and the second restraines the unit and is used for restraining common mode interference to restrain the interfering signal who predetermines the frequency channel in disturbance voltage test procedure, thus can to the mixer especially the electromagnetic interference that produces of broken wall machine carry out effectual suppression.
Description
Technical field
The utility model relates to living electric apparatus technical field, particularly to a kind of electromagnetic interference suppression circuit for mixer and a kind of mixer with device.
Background technology
Broken wall function utilizes high rotating speed to be broken by the cell membrane of plant food materials, with abundant releasing nutrients, is deeply liked by consumer.But, because the motor speed of wall-breaking machine is the highest, thus bring the problem that electromagnetic interference is the biggest.But, correlation technique is difficult to solve this problem.
Utility model content
One of technical problem that the utility model is intended to solve in correlation technique the most to a certain extent.To this end, a purpose of the present utility model is to propose a kind of electromagnetic interference suppression circuit for mixer, the electromagnetic interference of mixer can effectively be suppressed by this circuit.
Another purpose of the present utility model is to propose a kind of mixer.
For reaching above-mentioned purpose, on the one hand the utility model proposes a kind of electromagnetic interference suppression circuit for mixer, including: the first suppression unit, between zero line and the live wire of the AC power that described first suppression unit is connected to input, described first suppression unit is in order to suppress the surge from described AC power to disturb；First wave filter, the first input end of described first wave filter and the second input are connected in parallel on the two ends of described first suppression unit, and described first wave filter to the interference of late-class circuit and suppresses the interference to described AC power of the described late-class circuit from described AC power with suppression by suppression DM EMI and common mode disturbances；Second suppression unit, first end of described second suppression unit is connected with the first output of described first wave filter, second end of described second suppression unit is connected with the second output of described first wave filter, 3rd termination ground wire of described second suppression unit, described second suppression unit is in order to suppress described common mode disturbances, and suppresses the interference signal of default frequency range in disturbance voltage test process.
According to the electromagnetic interference suppression circuit for mixer that the utility model proposes, disturbed from the surge of AC power by the first suppression unit suppression, and to the interference of late-class circuit and suppress the late-class circuit interference to AC power with suppression AC power by the first wave filter suppression DM EMI and common mode disturbances, and by the second suppression unit suppression common mode disturbances, and suppress the interference signal of default frequency range in disturbance voltage test process, it is thus possible to the electromagnetic interference producing mixer particularly wall-breaking machine effectively suppresses.
Further, described first wave filter is pi type filter.
Specifically, described pi type filter includes: the first electric capacity, and described first electric capacity is connected in parallel on the two ends of described first suppression unit；First common mode inductance, the first end of described first common mode inductance is connected with one end of described first electric capacity, and the second end of described first common mode inductance is connected with the other end of described first electric capacity；Second electric capacity, one end of described second electric capacity is connected with the 3rd end of described first common mode inductance, and the other end of described second electric capacity is connected with the 4th end of described first common mode inductance.
Wherein, described first electric capacity and described second electric capacity are X electric capacity.
Further, described second suppression unit includes: the 3rd electric capacity of series connection and the 4th electric capacity, has first node between the 3rd electric capacity and the 4th electric capacity of described series connection；Second common mode inductance, the first end of described second common mode inductance and the second end are connected with described first node after being connected, and the 3rd end of described second common mode inductance and the 4th end are connected with described ground wire after being connected.
Wherein, described 3rd electric capacity and described 4th electric capacity are Y capacitance.
Further, described first suppression unit is piezo-resistance.
Further, described default frequency range is 150KHz-30MHz.
Further, described electromagnetic interference suppression circuit is arranged on the power line port of described mixer.
Further, the electromagnetic interference of described mixer is produced by the switch power module in described late-class circuit, silicon controlled module and motor.
For reaching above-mentioned purpose, on the other hand the utility model proposes a kind of mixer, including the described electromagnetic interference suppression circuit for mixer.
According to the mixer that the utility model proposes, by the above-mentioned electromagnetic interference suppression circuit for mixer, the surge from AC power can be suppressed to disturb, and suppress AC power to the interference of late-class circuit and the suppression late-class circuit interference to AC power, and suppression common mode disturbances, and suppress the interference signal of default frequency range in disturbance voltage test process, it is thus possible to the electromagnetic interference producing mixer particularly wall-breaking machine effectively suppresses.
Accompanying drawing explanation
Fig. 1 is the block diagram of the electromagnetic interference suppression circuit for mixer according to the utility model embodiment；
Fig. 2 is the circuit theory diagrams of the electromagnetic interference suppression circuit for mixer according to one embodiment of the utility model；
Fig. 3 is the block diagram of the mixer according to one embodiment of the utility model；And
Fig. 4 is the block diagram of the mixer according to another embodiment of the utility model.
Reference:
For the electromagnetic interference suppression circuit 100 of mixer, AC power AC, the first suppression unit the 10, first wave filter 20 and the second suppression unit 30；
Piezo-resistance ZNR, the first electric capacity C1, the first common mode inductance TR1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4 and the second common mode inductance TR2；
The silicon controlled module 700 of motor 200, silicon controlled module 300, switch power module 400, control chip 500, heater circuit 600 and heater circuit.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, and the most same or similar label represents same or similar element or has the element of same or like function.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to be used for explaining the utility model, and it is not intended that to restriction of the present utility model.
Below with reference to the accompanying drawings the electromagnetic interference suppression circuit for mixer that the utility model embodiment proposes and the mixer with it are described.According to an embodiment of the present utility model, mixer is preferably wall-breaking machine.
Fig. 1 is the block diagram of the electromagnetic interference suppression circuit for mixer according to the utility model embodiment.As it is shown in figure 1, this electromagnetic interference suppression circuit 100 being used for mixer includes: the first suppression unit the 10, first wave filter 20 and the second suppression unit 30.
Wherein, between the zero line N and live wire L of the AC power AC such as civil power that the first suppression unit 10 is connected to input, the first suppression unit 10 disturbs in order to suppress the surge from AC power AC；The first input end of the first wave filter 20 and the second input are connected in parallel on the two ends of the first suppression unit 10, and the first wave filter 20 to the interference of late-class circuit and suppresses the late-class circuit interference to AC power AC from AC power AC with suppression by suppression DM EMI and common mode disturbances；First end of the second suppression unit 30 and the first output of the first wave filter 20 are connected, second end of the second suppression unit 30 and the second output of the first wave filter 20 are connected, 3rd termination ground wire of the second suppression unit 30, second suppression unit 30 is in order to suppress common mode disturbances, and suppresses the interference signal of default frequency range in disturbance voltage test process.
Further, the first end of the second suppression unit 30 is as the second output OUT2 of electromagnetic interference suppression circuit 100, and the second end of the second suppression unit 30 is as the first output OUT1 of electromagnetic interference suppression circuit 100.
According to an embodiment of the present utility model, as in figure 2 it is shown, the first suppression unit 10 can be piezo-resistance ZNR, i.e. saying, one end of piezo-resistance ZNR is connected with the zero line N of AC power AC, and the other end of piezo-resistance ZNR is connected with the live wire L of AC power AC.Wherein, piezo-resistance ZNR is disturbed from the lightning surge of AC power AC such as civil power for suppression, effectively protects late-class circuit.
According to a concrete example of the present utility model, the nominal voltage scope of piezo-resistance ZNR can be 270V～560V, and preferred value is 560V.
According to an embodiment of the present utility model, as in figure 2 it is shown, the first wave filter 20 is pi type filter.Specifically, as in figure 2 it is shown, pi type filter includes: the first electric capacity C1, the first common mode inductance TR1 and the second electric capacity C2.
Wherein, the first electric capacity C1 is connected in parallel on the two ends of the first suppression unit 10, i.e. says, one end of the first electric capacity C1 is connected with one end of piezo-resistance ZNR, and the other end of the first electric capacity C1 is connected with the other end of piezo-resistance ZNR；First end of the first common mode inductance TR1 and one end of the first electric capacity C1 are connected, and second end of the first common mode inductance TR1 and the other end of the first electric capacity C1 are connected；One end of second electric capacity C2 is connected with the 3rd end of the first common mode inductance TR1, and the other end of the second electric capacity C2 and the 4th end of the first common mode inductance TR1 are connected.
That is, pi type filter is formed by the first electric capacity C1, the first common mode inductance TR1 and the second electric capacity C2, first electric capacity C1 and the second electric capacity C2 is mainly used in suppressing DM EMI, first common mode inductance TR1 is mainly used in suppressing common mode disturbances, and, pi type filter may also suppress the interference to late-class circuit of the AC power AC such as civil power, may also suppress the late-class circuit interference to AC power AC such as civil power simultaneously.
It is X electric capacity according to a concrete example of the present utility model, the first electric capacity C1 and the second electric capacity C2.More specifically, the capacitance scope of the first electric capacity C1 and the second electric capacity C2 can be 0.1uF～2uF, preferred value is 1uF.
According to an embodiment of the present utility model, as in figure 2 it is shown, the second suppression unit 30 includes: the 3rd electric capacity C3, the 4th electric capacity C4 and the second common mode inductance TR2.
Wherein, 3rd electric capacity C3 and the 4th electric capacity C4 series connection, one end of 3rd electric capacity C3 is connected with one end of the second electric capacity C2, the other end of the 3rd electric capacity C3 and one end of the 4th electric capacity C4 are connected, the other end of the 4th electric capacity C4 and the other end of the second electric capacity C2 are connected, and have first node between the 3rd electric capacity C3 and the 4th electric capacity C4 of series connection；First end of the second common mode inductance TR2 and the second end are connected with first node after being connected, and the 3rd end of the second common mode inductance TR2 and the 4th end are connected with ground wire G after being connected.
That is, 3rd electric capacity C3, the 4th electric capacity C4 and the second common mode inductance TR2 common mode disturbances in suppression circuit, and by connecting the second common mode inductance TR2 at the first node between the 3rd electric capacity C3 and the 4th electric capacity C4, the default frequency range in disturbance voltage test experiments can there be is extraordinary inhibition.
In an embodiment of the present utility model, default frequency range can be 150KHz-30MHz.
According to a concrete example of the present utility model, the 3rd electric capacity C3 and the 4th electric capacity C4 is Y capacitance.More specifically, the capacitance scope of the 3rd electric capacity C3 and the 4th electric capacity C4 can be 100nF～4.7mF, preferred value is 470nF.The sensibility reciprocal scope of the first common mode inductance TR1 and the second common mode inductance TR2 can be 1mH～20mH, and preferred value is 10mH.
As mentioned above, first piezo-resistance ZNR is concatenated between zero line N and live wire L, thus lightning surge can be suppressed to disturb, components and parts in protection late-class circuit, secondly, concatenate first X electric capacity C1 again, first common mode inductance TR1 and second X electric capacity C2, C1, TR1 and C2 forms pi type filter, it is thus possible to effectively filter out the interference from civil power and mixer interference to external world itself, last the most respectively from zero line N and live wire L first Y capacitance C3 of concatenation, second Y capacitance C4 and the second common mode inductance TR2 to ground wire G, it is thus possible to the common mode disturbances in effective filter circuit.
Further, according to an embodiment of the present utility model, electromagnetic interference suppression circuit 100 may be provided at the power line port of mixer.
Specifically, as shown in Figure 3 and Figure 4, mixer comprises the steps that electromagnetic interference suppression circuit 100, motor 200, silicon controlled module 300, switch power module 400 and control chip 500.
Wherein, the first input end of electromagnetic interference suppression circuit 100 is connected with the zero line N of AC power AC, second input of electromagnetic interference suppression circuit 100 is connected with the live wire L of AC power AC, and the two ends of piezo-resistance ZNR correspond to first input end and second input of electromagnetic interference suppression circuit 100；One end of motor 200 is connected with the second output OUT2 of electromagnetic interference suppression circuit 100, and the second output OUT2 that one end is electromagnetic interference suppression circuit 100 of the 3rd electric capacity C3；First end of silicon controlled module 300 is connected with the other end of motor 200, second end of silicon controlled module 300 is connected with the first output OUT1 of electromagnetic interference suppression circuit 100, and the first output OUT1 that the other end is electromagnetic interference suppression circuit 100 of the 4th electric capacity C4；Control chip 500 is connected with the control end of silicon controlled module 300, and control chip 500 controls motor 200 by silicon controlled module 300；The first input end of switch power module 400 is connected with one end of motor 200 and the second output OUT2 of electromagnetic interference suppression circuit 100 respectively, second input of switch power module 400 is connected with the second end of silicon controlled module 300 and the first output OUT1 of electromagnetic interference suppression circuit 100 respectively, and the output of switch power module 400 is connected with control chip 500.
So, the alternating current that AC power AC provides is after the electromagnetic interference of electromagnetic interference suppression circuit 100 suppresses, it is supplied to motor 200, silicon controlled module 300 and switch power module 400 and thinks that it is powered, further, the convert alternating current after electromagnetic interference is suppressed by switch power module 400 is that predetermined DC power supply thinks that control chip 500 is powered.
As shown in Figure 4, mixer may also include that the silicon controlled module 700 of heater circuit 600 and heater circuit.Wherein, one end of heater circuit 600 is connected with the second output OUT2 of electromagnetic interference suppression circuit 100；One end of the silicon controlled module 700 of heater circuit is connected with the other end of heater circuit 600, the other end of the silicon controlled module 700 of heater circuit is connected with the first output OUT1 of electromagnetic interference suppression circuit 100, and control chip 500 also control end with the silicon controlled module 700 of heater circuit is connected, control chip 500 controls heater circuit 600 by the silicon controlled module 700 of heater circuit.
According to an embodiment of the present utility model, the electromagnetic interference of mixer is produced by the switch power module 400 in late-class circuit, silicon controlled module 300 and motor 200.The electromagnetic interference of mixer also can be produced by the silicon controlled module 700 of the heater circuit 600 in late-class circuit and heater circuit.
Specifically, the electromagnetic interference of mixer occurs mainly with switch power module 400, silicon controlled module 300 (with 700) and motor 200, the interference that wherein motor 200 produces is the most serious, so electromagnetic interference suppression circuit 100 is arranged on power line port, can realize effectively suppressing.
To sum up, the electromagnetic interference suppression circuit for mixer proposed according to the utility model embodiment, the surge from AC power is suppressed to disturb by the first suppression unit 10, and suppress DM EMI and common mode disturbances to the interference of late-class circuit and to suppress the late-class circuit interference to AC power with suppression AC power by the first wave filter 20, and suppress common mode disturbances by the second suppression unit 30, and in disturbance voltage test process, the interference signal of default frequency range is suppressed, it is thus possible to the electromagnetic interference producing mixer particularly wall-breaking machine effectively suppresses.
Finally, the utility model embodiment also proposed a kind of mixer, including the above-mentioned electromagnetic interference suppression circuit for mixer.
The mixer proposed according to the utility model embodiment, by the above-mentioned electromagnetic interference suppression circuit for mixer, the surge from AC power can be suppressed to disturb, and suppress AC power to the interference of late-class circuit and the suppression late-class circuit interference to AC power, and suppression common mode disturbances, and suppress the interference signal of default frequency range in disturbance voltage test process, it is thus possible to the electromagnetic interference producing mixer particularly wall-breaking machine effectively suppresses.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", on " ", D score, " front ", " afterwards ", " left ", " right ", " vertically ", " level ", " push up ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of the instruction such as " circumferential " are based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection ", the term such as " fixing " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means that the specific features, structure, material or the feature that combine this embodiment or example description are contained at least one embodiment of the present utility model or example.In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be to combine in one or more embodiments in office or example in an appropriate manner.Additionally, in the case of the most conflicting, the feature of the different embodiments described in this specification or example and different embodiment or example can be combined and combine by those skilled in the art.
Although above it has been shown and described that embodiment of the present utility model, it is understandable that, above-described embodiment is exemplary, it is not intended that to restriction of the present utility model, above-described embodiment can be changed in the range of the utility model, revises, replace and modification by those of ordinary skill in the art.
Claims (11)
1. the electromagnetic interference suppression circuit for mixer, it is characterised in that including:
First suppression unit, between zero line and the live wire of the AC power that described first suppression unit is connected to input, described first suppression unit is in order to suppress the surge from described AC power to disturb；
First wave filter, the first input end of described first wave filter and the second input are connected in parallel on the two ends of described first suppression unit, described first wave filter to the interference of late-class circuit and suppresses the interference to described AC power of the described late-class circuit with the described AC power of suppression by suppression DM EMI and common mode disturbances, wherein, described late-class circuit includes motor；
Second suppression unit, first end of described second suppression unit is connected with the first output of described first wave filter, second end of described second suppression unit is connected with the second output of described first wave filter, 3rd termination ground wire of described second suppression unit, described second suppression unit is in order to suppress described common mode disturbances, and suppresses the interference signal of default frequency range in disturbance voltage test process.
2. the electromagnetic interference suppression circuit for mixer as claimed in claim 1, it is characterised in that described first wave filter is pi type filter.
3. the electromagnetic interference suppression circuit for mixer as claimed in claim 2, it is characterised in that described pi type filter includes:
First electric capacity, described first electric capacity is connected in parallel on the two ends of described first suppression unit；
First common mode inductance, the first end of described first common mode inductance is connected with one end of described first electric capacity, and the second end of described first common mode inductance is connected with the other end of described first electric capacity；
Second electric capacity, one end of described second electric capacity is connected with the 3rd end of described first common mode inductance, and the other end of described second electric capacity is connected with the 4th end of described first common mode inductance.
4. the electromagnetic interference suppression circuit for mixer as claimed in claim 3, it is characterised in that described first electric capacity and described second electric capacity are X electric capacity.
5. the electromagnetic interference suppression circuit for mixer as according to any one of claim 1-4, it is characterised in that described second suppression unit includes:
3rd electric capacity of series connection and the 4th electric capacity, have first node between the 3rd electric capacity and the 4th electric capacity of described series connection；
Second common mode inductance, the first end of described second common mode inductance and the second end are connected with described first node after being connected, and the 3rd end of described second common mode inductance and the 4th end are connected with described ground wire after being connected.
6. the electromagnetic interference suppression circuit for mixer as claimed in claim 5, it is characterised in that described 3rd electric capacity and described 4th electric capacity are Y capacitance.
7. the electromagnetic interference suppression circuit for mixer as claimed in claim 1, it is characterised in that described first suppression unit is piezo-resistance.
8. the electromagnetic interference suppression circuit for mixer as claimed in claim 1, it is characterised in that described default frequency range is 150KHz-30MHz.
9. the electromagnetic interference suppression circuit for mixer as claimed in claim 1, it is characterised in that described electromagnetic interference suppression circuit is arranged on the power line port of described mixer.
10. the electromagnetic interference suppression circuit for mixer as claimed in claim 1, it is characterised in that the electromagnetic interference of described mixer is produced by the switch power module in described late-class circuit, silicon controlled module and motor.
11. 1 kinds of mixers, it is characterised in that include the electromagnetic interference suppression circuit for mixer as according to any one of claim 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620213604.9U CN205430051U (en) | 2016-03-18 | 2016-03-18 | Mixer and be used for electromagnetic interference suppressing circuit of mixer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620213604.9U CN205430051U (en) | 2016-03-18 | 2016-03-18 | Mixer and be used for electromagnetic interference suppressing circuit of mixer |
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| CN205430051U true CN205430051U (en) | 2016-08-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204704A (en) * | 2016-03-18 | 2017-09-26 | 广东美的生活电器制造有限公司 | Mixer and the electromagnetic interference suppression circuit for mixer |
| CN107800287A (en) * | 2016-09-05 | 2018-03-13 | 广东美的生活电器制造有限公司 | Household electrical appliance and its EMC circuits |
-
2016
- 2016-03-18 CN CN201620213604.9U patent/CN205430051U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204704A (en) * | 2016-03-18 | 2017-09-26 | 广东美的生活电器制造有限公司 | Mixer and the electromagnetic interference suppression circuit for mixer |
| CN107800287A (en) * | 2016-09-05 | 2018-03-13 | 广东美的生活电器制造有限公司 | Household electrical appliance and its EMC circuits |
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