CN208424830U - A kind of device, control circuit and electric appliance inhibiting electromagnetic coupling - Google Patents
A kind of device, control circuit and electric appliance inhibiting electromagnetic coupling Download PDFInfo
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- CN208424830U CN208424830U CN201821167715.6U CN201821167715U CN208424830U CN 208424830 U CN208424830 U CN 208424830U CN 201821167715 U CN201821167715 U CN 201821167715U CN 208424830 U CN208424830 U CN 208424830U
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Abstract
The utility model relates to a kind of device, control circuit and electric appliances for inhibiting electromagnetic coupling.The device includes at least two branches, each branch includes resonance circuit and electric power driving module, the electric power driving module is connected with the resonance circuit, and wherein at least one branch further includes switch module, and the switch module is arranged on the resonance circuit of the branch.The electromagnetic coupling that the utility model can flexibly inhibit resonance circuit mutual solves the problem of that the superposition due to electromagnetic coupling energy increases the failure risk of electric power driving module.
Description
Technical field
The utility model belongs to appliance field, and in particular to a kind of device, control circuit and electric appliance for inhibiting electromagnetic coupling.
Background technique
With the development of science and technology, the household electrical appliance needed in people's daily life are more and more, many household electrical appliance are all
Using electromagnetic heating, the mode generallyd use has following several: by the multiple independent resonance electricity of single electric power driving module control
Road, or multiple independent resonance circuits are controlled respectively by multiple electric power driving modules, wherein resonance circuit is added for providing
The module of heat, so can achieve the local locations such as the bottom to cookware, side wall or top and carries out concentration heating, to cooking property
Computer heating control required for energy brings greater flexibility, and its control precisely, it is homogeneous heating, more efficient.
But in use, the mutual electromagnetic field couples of multiple resonance circuits are not inhibited effectively, phase
Since structure space is limited between adjacent coil panel, the degree of coupling that frequently can lead between coil panel is significantly increased, local heating
Energy is distributed to the other positions of cookware by way of coupling by energy, is lost multiple electric power driving module controlling parties
The advantage of case concentration local heating.Simultaneously when a surge arises, surge voltage is added to the voltage after rectifying and wave-filtering, entire circuit
Voltage raise, on the basis of there are electromagnetic coupling, but be superimposed coupling energy, lead to the power drives mould not in working condition
The drain-source voltage of block increases extremely, increases electric power driving module failure risk.
In the scheme that electromagnetic heating in the prior art is controlled, phase is taken without the electromagnetic coupling between resonance circuit
The technological means answered is inhibited.
Utility model content
In view of this, the utility model in view of the deficiency of the prior art, provides a kind of dress for inhibiting electromagnetic coupling
It sets, control circuit and electric appliance, the electromagnetic coupling that can flexibly inhibit resonance circuit mutual are solved due to electromagnetic coupling energy
Superposition, the problem of increasing the failure risk of electric power driving module.
The utility model provides a kind of device for inhibiting electromagnetic coupling, which includes at least two branches, Mei Gesuo
Stating branch includes resonance circuit and electric power driving module, and the electric power driving module is connected with the resonance circuit, wherein at least
One branch further includes switch module, and the switch module is arranged on the resonance circuit of the branch.
Preferably, the resonance circuit includes inductive branch and capacitive branch, and resonance electricity is provided on the inductive branch
Feel, resonant capacitance is provided on the capacitive branch, the switch module is arranged in the inductive branch and/or capacitive branch
On.
Preferably, the switch module includes relay and the triode that is connected with the relay.
Preferably, the electric power driving module includes insulated gate bipolar transistor IGBT or metal-oxide half field effect transistor
MOSFET。
Preferably, at least two branch includes the first branch and second branch, and the first branch includes first humorous
Vibration circuit, the first electric power driving module for being connected with first resonance circuit and it is arranged on first resonance circuit
First switch module, the second branch include the second resonance circuit, the second source being connected with second resonance circuit drive
Dynamic model block and the second switch module being arranged on second resonance circuit.
The utility model also provides a kind of control circuit, which includes the device of the inhibition electromagnetic coupling.
The utility model also provides a kind of electric appliance comprising the control circuit.
Preferably, the electric appliance includes cooking apparatus, and the cooking apparatus includes heating device, and the heating device includes
At least two heating parts of the different location of the cooking apparatus are located at, each heating part includes the control circuit
In a branch.
Preferably, at least two heating part includes that the bottom-heated portion of the bottom of the cooking apparatus is arranged in and sets
It sets in the side heating part of the side of the cooking apparatus.
Of the existing technology in order to solve the problems, such as, the utility model provides a kind of device for inhibiting electromagnetic coupling, this reality
It can include the following benefits with the technical solution that novel embodiment provides: will not be in work shape by control switch module
The resonant tank of the resonance circuit of state disconnects, and completely inhibits power dissipation caused by electromagnetic coupling, when it is applied to electric cooker
When equal cooking apparatus, concentrates most of energy to realize and the concentration of the local location of cooking apparatus is heated, realize to cooking apparatus
The independent heating of comprehensive formula.The failure risk for reducing electric power driving module, reduces whole failure rate.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can be used to limit the utility model.
Detailed description of the invention
Hereinafter reference will be made to the drawings is described preferred embodiment according to the present utility model.In figure:
Fig. 1 is the block diagram of the device shown according to an exemplary embodiment for inhibiting electromagnetic coupling.
Fig. 2 is the circuit diagram of the device shown according to an exemplary embodiment for inhibiting electromagnetic coupling.
Fig. 3 is the circuit diagram of the device of the inhibition electromagnetic coupling shown according to another exemplary embodiment.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the utility model.On the contrary, they be only with such as
The example of the consistent device and method of some aspects be described in detail in the appended claims, the utility model.
Before carrying out embodiment description, it should be noted that for convenience of description and embody, this group of embodiment needle
Pair be inhibit electromagnetic coupling devices and methods therefor, it is not limited to enumerating limited range in embodiment.
Electric power driving module in following exemplary embodiment is only exemplary description, has class with electric power driving module
It is equally applicable like the other equipment of attribute.
Fig. 1 is the block diagram of the device of inhibition electromagnetic coupling described in the utility model embodiment.As shown in Figure 1, the suppression
The device of electromagnetic coupling processed includes: Power Entry Module 1, the first branch and second branch, and the first branch includes the first resonance electricity
Road 2, first switch module 3, the first electric power driving module 4, second branch include the second resonance circuit 5, second switch module 6,
Second source drive module 7.Wherein, the Power Entry Module 1 provides circuit power supply, and selectable, the power supply is
Power supply after rectifying and wave-filtering.First resonance circuit 2 by resonant inductance and resonance capacitance group at.The second resonance electricity
Road 5 also by resonant inductance and resonance capacitance group at.The output end of the Power Entry Module 1 connects the first resonance circuit 2 respectively
The input terminal of input terminal and second resonance circuit 5.The first switch module 3 is arranged on the first resonance circuit 2, with energy
Enough resonant tanks for disconnecting and being connected to the first resonance circuit 2.The second switch module 6 is arranged on the second resonance circuit 5, with
The resonant tank that can be disconnected and be connected to the second resonance circuit 5.
Selectable, first electric power driving module 4 and the second source drive module 7 include at least insulated gate
Bipolar transistor IGBT or metal-oxide half field effect transistor MOSFET.
The suppression provided by the present embodiment is specifically introduced by taking the heating device of cooking apparatus such as electric cooker as an example below
The working principle of the device of electromagnetic coupling processed, heating device include bottom-heated portion and the setting for being located at the bottom of electric cooker
In the side heating part of the side of electric cooker, wherein side heating part includes the first branch, and bottom-heated portion includes second
Road, working principle are: when needing bottom-heated portion and side heating part while heating, i.e., using two resonance circuits simultaneously
When, the first switch module 3 and the second switch module 6 are closed, first resonance circuit 2 and the first power drives mould
Block 4 is started to work, meanwhile, second resonance circuit 5 and second source drive module 7 are started to work.
When only needing to carry out bottom-heated portion to be heated, the first switch module 3 is driven to disconnect, described at this time the
The resonant tank of one resonance circuit 2 disconnects, and first resonance circuit 2 can not work normally.At the same time, described second is driven
Switch module 6 is closed, and the resonant tank of second resonance circuit 5 is connected at this time, and second resonance circuit 5 can be second
It is worked normally under the driving of electric power driving module 7.
When only needing to carry out side heating part to be heated, the first switch module 3 is driven to be closed, described at this time the
The resonant tank of one resonance circuit 2 is connected, and first resonance circuit 2 can be under the driving of the first electric power driving module 4 just
Often work.At the same time, the second switch module 6 is driven to disconnect, the resonant tank of second resonance circuit 5 is disconnected at this time
It opens, second resonance circuit 5 can not work normally.
Described first by the first switch module 3 and the second switch module 6 disconnection not in working condition is humorous
The resonant tank of vibration circuit 2 or the second resonance circuit 5, completely inhibits electromagnetic coupling on physical layer.
Meanwhile the embodiments of the present invention are by concentrating most of energy to realize the concentration to the local location of electric cooker
Heating realizes that the independent heating comprehensive to electric cooker reduces whole event to reduce the failure risk of electric power driving module
Barrier rate.
It is, of course, understood that the quantity of branch can be not limited to be two, it is also possible to three or more,
It can not be all branch roads and be respectively provided with switch module, can not also be set on needing to be chronically at the road working condition Xia Zhi
Set switch module.In addition, switch module can also be separately positioned on the inductive branch and capacitive branch of same resonance circuit.
The present embodiment also provides a kind of electricity corresponding to the specific inhibition electromagnetic coupling for inhibiting electromagnetic coupling device
Lu Tu, as shown in Figure 2.INPUT is Power Entry Module, usually input alternating current, and carries out rectification filter to the alternating current of input
Wave.
First resonance circuit includes the first inductance L1 and first capacitor C1, and in the present embodiment, the first inductance L1 connects
The first switch module is connect, selectable, the first switch module includes the first relay K1, as shown in Fig. 2, described the
Branch (i.e. the first resonance circuit where the first inductance L1 is arranged in one relay K1 connecting triode Q1, the first relay K1
Inductive branch) on, selectable, first electric power driving module can choose the first IGBT1.
Second resonance circuit includes the second inductance L2 and the second capacitor C2, and in the present embodiment, the second inductance L2 connects
The second switch module is connect, selectable, the second switch module includes the second relay K2, as shown in Fig. 2, described the
Two relay K2 connecting triode Q2, the second relay K2 setting branch where the second inductance L2 (i.e. the second resonance circuit
Inductive branch) on, selectable, the second source drive module can choose the 2nd IGBT2.
The working principle of the circuit for inhibiting electromagnetic coupling is as follows:
INPUT is the filtered voltage in commercial power rectification, and when needing first resonance circuit work, it is enabled first to control EN1
Signal exports high level, triode Q1 conducting, and the first relay K1 be in closed state, the first inductance L1 with
The first capacitor C1 constitutes closed circuit；EN2 enable signal output low level, the triode Q2 cut-off, institute are controlled simultaneously
The second relay K2 is stated to be in an off state, the second inductance L2 and the second capacitor C2 can not constitute circuit, further according to
The demand of control logic, controls the turn-on and turn-off of the first IGBT1, and first resonance circuit is worked normally.
When needing the work of the second resonance circuit, first controlling EN2 enable signal and export high level, the triode Q2 is connected,
The second relay K2 is in closed state, and the second inductance L2 and the second capacitor C2 constitute closed circuit；Simultaneously
It controls EN1 enable signal and exports low level, the triode Q1 cut-off, the first relay K1 is in an off state, described
First inductance L1 and the second capacitor C1 can not constitute circuit, further according to the demand of control logic, control the 2nd IGBT2
Turn-on and turn-off, second resonance circuit worked normally.
By control mode as above, can disconnect not in the resonant tank of the resonance circuit of working condition, in physical layer
On the problem of being fully solved electromagnetic coupling.
The present embodiment also provides another specific inhibition electromagnetic coupling for corresponding to the inhibition electromagnetic coupling device
Circuit diagram, as shown in Figure 3.INPUT is Power Entry Module, usually input alternating current, and is rectified to the alternating current of input
Filtering.
First resonance circuit includes the first inductance L1 and first capacitor C1, and in the present embodiment, the first capacitor C1 connects
The first switch module is connect, selectable, the first switch module includes the first relay K1, as shown in figure 3, described the
Branch (i.e. the first resonance circuit where first capacitor C1 is arranged in one relay K1 connecting triode Q1, the first relay K1
Capacitive branch) on, selectable, first electric power driving module can choose the first IGBT1.
Second resonance circuit includes the second inductance L2 and the second capacitor C2, and in the present embodiment, the second capacitor C2 connects
The second switch module is connect, selectable, the second switch module includes the second relay K2, as shown in figure 3, described the
Branch (i.e. the second resonance circuit where the second capacitor C2 is arranged in two relay K2 connecting triode Q2, the second relay K2
Capacitive branch) on, selectable, the second source drive module can choose the 2nd IGBT2.
The working principle of the circuit for inhibiting electromagnetic coupling is as follows:
INPUT is the filtered voltage in commercial power rectification, and when needing first resonance circuit work, it is enabled first to control EN1
Signal exports high level, triode Q1 conducting, and the first relay K1 be in closed state, the first inductance L1 with
The first capacitor C1 constitutes closed circuit；EN2 enable signal output low level, the triode Q2 cut-off, institute are controlled simultaneously
The second relay K2 is stated to be in an off state, the second inductance L2 and the second capacitor C2 can not constitute circuit, further according to
The demand of control logic, controls the turn-on and turn-off of the first IGBT1, and first resonance circuit is worked normally.
When needing the work of the second resonance circuit, first controlling EN2 enable signal and export high level, the triode Q2 is connected,
The second relay K2 is in closed state, and the second inductance L2 and the second capacitor C2 constitute closed circuit；Simultaneously
It controls EN1 enable signal and exports low level, the triode Q1 cut-off, the first relay K1 is in an off state, described
First inductance L1 and the second capacitor C1 can not constitute circuit, further according to the demand of control logic, control the 2nd IGBT2
Turn-on and turn-off, second resonance circuit worked normally.
By control mode as above, can disconnect not in the resonant tank of the resonance circuit of working condition, in physical layer
On the problem of being fully solved electromagnetic coupling.
Illustratively, when a surge arises, surge voltage is added to the voltage after rectifying and wave-filtering, the voltage lift of entire circuit
Height disconnects the resonant tank of the first resonance circuit, a side when needing the work of the second resonance circuit by first switch module at this time
Face can inhibit electromagnetic coupling, while again can be to avoid not in the drain-source voltage of the electric power driving module of working condition liter extremely
Height, to reduce by the first electric power driving module failure risk.Similarly, when needing the work of the first resonance circuit, pass through second at this time
Switch module disconnects the resonant tank of the second resonance circuit, on the one hand can inhibit electromagnetic coupling, while again can be to avoid not existing
The drain-source voltage of the electric power driving module of working condition increases extremely, to reduce second source drive module failure risk.
The utility model also provides a kind of control circuit, which includes the device of the inhibition electromagnetic coupling.
The working principle of the device for the inhibition electromagnetic coupling that the control circuit includes is same as the previously described embodiments, herein not
It repeats again.
The utility model also provides a kind of electric appliance comprising the control circuit, the electric appliance are, for example, to pass through heating in fact
The cooking apparatus of existing cooking process.Cooking apparatus is, for example, that electric cooker, micropressure pot, electric pressure cooking saucepan etc. were cooked by heating realization
The utensil of journey, the cooking apparatus include heating device, and heating device includes being located at the different location of cooking apparatus at least
Two heating parts, each heating part include a branch in control circuit, for example, at least two heating parts include that setting is being cooked
Prepare food utensil bottom bottom-heated portion and be arranged in cooking apparatus side side heating part, it is, of course, also possible to include set
Set other heating parts such as the corner heating part at the bottom of cooking apparatus and side intersection location.In order to facilitate control, preferably
Ground, each road are provided with switch module.
Its control method includes:
When a part of heating part at least two heating part is at off working state and another part heating part
When working condition, switch module of the control in the heating part under off working state is disconnected, so that being in inoperative shape
The resonance circuit in heating part under state can not work normally, and the switch module in heating part under control is in running order closes
It closes, the resonance circuit in running order lower heating part can be under the driving of coupled electric power driving module normally
Work.
By taking side heating part and bottom-heated portion as an example, side heating part includes the first branch, and bottom-heated portion includes the
Two branches, when needing bottom-heated portion and side heating part while heating, i.e., when using two resonance circuits simultaneously, described the
One switch module 3 and the second switch module 6 closure, first resonance circuit 2 and the first electric power driving module 4 start
Work, meanwhile, second resonance circuit 5 and second source drive module 7 are started to work.
When only needing to carry out bottom-heated portion to be heated, the first switch module 3 is driven to disconnect, described at this time the
The resonant tank of one resonance circuit 2 disconnects, and first resonance circuit 2 can not work normally.At the same time, described second is driven
Switch module 6 is closed, and the resonant tank of second resonance circuit 5 is connected at this time, and second resonance circuit 5 can be second
It is worked normally under the driving of electric power driving module 7.
When only needing to carry out side heating part to be heated, the first switch module 3 is driven to be closed, described at this time the
The resonant tank of one resonance circuit 2 is connected, and first resonance circuit 2 can be under the driving of the first electric power driving module 4 just
Often work.At the same time, the second switch module 6 is driven to disconnect, the resonant tank of second resonance circuit 5 is disconnected at this time
It opens, second resonance circuit 5 can not work normally.
Those skilled in the art will readily occur to this after considering specification and practicing utility model content disclosed herein
Other embodiments of utility model.This application is intended to cover any variations, uses, or adaptations of the utility model,
These variations, uses, or adaptations follow the general principle of the utility model and undocumented including the utility model
Common knowledge or conventional techniques in the art.The description and examples are only to be considered as illustrative.
It should be understood that the utility model is not limited to the accurate knot for being described above and being shown in the accompanying drawings
Structure, and various modifications and changes may be made without departing from the scope thereof.The scope of the utility model is only wanted by appended right
It asks to limit.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (9)
1. a kind of device for inhibiting electromagnetic coupling, which is characterized in that the device includes at least two branches, each branch packet
Resonance circuit and electric power driving module are included, the electric power driving module is connected with the resonance circuit, wherein at least one branch
It further include switch module, the switch module is arranged on the resonance circuit of the branch.
2. the apparatus according to claim 1, which is characterized in that the resonance circuit includes inductive branch and capacitive branch,
It is provided with resonant inductance on the inductive branch, resonant capacitance is provided on the capacitive branch, the switch module setting exists
On the inductive branch and/or capacitive branch.
3. the apparatus according to claim 1, which is characterized in that the switch module include relay and with the relay
Connected triode.
4. the apparatus according to claim 1, which is characterized in that the electric power driving module includes insulated gate bipolar crystal
Pipe IGBT or metal-oxide half field effect transistor MOSFET.
5. according to claim 1 to device described in one of 4, which is characterized in that at least two branch includes the first branch
And second branch, the first branch includes the first resonance circuit, the first power drives for being connected with first resonance circuit
Module and the first switch module being arranged on first resonance circuit, the second branch include the second resonance circuit,
The second source drive module being connected with second resonance circuit and what is be arranged on second resonance circuit second open
Close module.
6. a kind of control circuit, which is characterized in that the device including the inhibition electromagnetic coupling as described in one of claim 1 to 5.
7. a kind of electric appliance, it is characterised in that: including control circuit as claimed in claim 6.
8. electric appliance according to claim 7, which is characterized in that the electric appliance includes cooking apparatus, the cooking apparatus packet
Heating device is included, the heating device includes at least two heating parts for being located at the different location of the cooking apparatus, often
A heating part includes a branch in the control circuit.
9. electric appliance according to claim 8, which is characterized in that at least two heating part includes being arranged in the culinary art
The side heating part in the bottom-heated portion of the bottom of utensil and the side that the cooking apparatus is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821167715.6U CN208424830U (en) | 2018-07-23 | 2018-07-23 | A kind of device, control circuit and electric appliance inhibiting electromagnetic coupling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821167715.6U CN208424830U (en) | 2018-07-23 | 2018-07-23 | A kind of device, control circuit and electric appliance inhibiting electromagnetic coupling |
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| CN208424830U true CN208424830U (en) | 2019-01-22 |
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| CN201821167715.6U Active CN208424830U (en) | 2018-07-23 | 2018-07-23 | A kind of device, control circuit and electric appliance inhibiting electromagnetic coupling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108966398A (en) * | 2018-07-23 | 2018-12-07 | 珠海格力电器股份有限公司 | A kind of device, control circuit, electric appliance and its control method inhibiting electromagnetic coupling |
-
2018
- 2018-07-23 CN CN201821167715.6U patent/CN208424830U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108966398A (en) * | 2018-07-23 | 2018-12-07 | 珠海格力电器股份有限公司 | A kind of device, control circuit, electric appliance and its control method inhibiting electromagnetic coupling |
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