CN206176478U - Electromagnetic oven - Google Patents
Electromagnetic oven Download PDFInfo
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- CN206176478U CN206176478U CN201621223091.6U CN201621223091U CN206176478U CN 206176478 U CN206176478 U CN 206176478U CN 201621223091 U CN201621223091 U CN 201621223091U CN 206176478 U CN206176478 U CN 206176478U
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Abstract
The embodiment of the utility model provides an induction cooker, including resonant circuit, controller and power source, this resonant circuit's first end is connected with the controller, and resonant circuit's second end and power source are connected, and this induction cooker still includes: the synchronous circuit and the timing circuit are both connected with the controller, the synchronous circuit is further connected with a third end of the resonant circuit, the synchronous circuit is used for triggering the controller to control the resonant circuit to be started or stopped when the induction cooker is in a heating mode, and the timing circuit is used for triggering the controller to control the resonant circuit to be started or stopped when the induction cooker is in a charging mode. The technical scheme of the utility model, utilize synchronous circuit and timing circuit to trigger switching on or ending of controller control resonance circuit, make the electromagnetism stove produce different operating power, improved the availability factor of electric energy.
Description
Technical field
The utility model is related to household electrical appliance technical field, more particularly to a kind of electromagnetic oven.
Background technology
With the development of wireless technology, at this stage generally by the essence control device peace with temp sensing function and wireless transmitting function
On pot cover loaded on the pan used with matching electromagnetic oven, using the essence control device will detect pan in food temperature and by its
Electromagnetic oven is sent to, electromagnetic oven can be made to adjust working condition in time, improve the thermal efficiency of electromagnetic oven.
At present, in order to ensure essence control module normal work, immediate prior art is Application No.
A kind of 201420042041.2 electromagnetic oven with wireless charging, the electromagnetic oven includes electromagnetic oven body, coil, power supply unit
And circuit substrate, the circuit substrate includes microcontroller, resonance circuit, inverter and user interface, the user interface for
Family selects wireless charging pattern or Electromagnetic Heating pattern, so that the coil is in the presence of controller, resonance circuit and inverter
Wireless transmission electric wave or Electromagnetic Heating electric wave are produced respectively.
However, in above-mentioned electromagnetic oven, wireless charging pattern or Electromagnetic Heating pattern are triggered using controller, need
Want inverter to adjust the power supply output of power supply unit, it cannot provide the work consistent with charge power needed for charging equipment
Power, electric energy service efficiency is low.
Utility model content
For at least one problem for solving to be mentioned in background technology, the utility model provides a kind of electromagnetic oven, using same
Step circuit and timing circuit carry out the on or off that trigger controller controls resonance circuit, electromagnetic oven is produced different work work(
Rate, improves the service efficiency of electric energy.
The utility model provides a kind of electromagnetic oven, including：Resonance circuit, controller and power interface, the resonance electricity
The first end on road is connected with the controller, and the second end of the resonance circuit is connected with the power interface, further, should
Electromagnetic oven, also includes：Synchronous circuit and timing circuit；
The synchronous circuit and the timing circuit are connected with the controller, the synchronous circuit also with the resonance
The three-terminal link of circuit, the synchronous circuit is used to trigger the controller control when the electromagnetic oven is in heating mode
The resonance circuit is opened or ended, and the timing circuit is used to trigger the control when the electromagnetic oven is in charge mode
Device controls the resonance circuit to open or end.
In the utility model embodiment, using synchronous circuit trigger controller control when electromagnetic oven is in heating mode
Resonance circuit processed is opened or ended, and using timing circuit, when electromagnetic oven is in charge mode, trigger controller controls resonance circuit
Open or end, its can according to the mode of operation of electromagnetic oven using synchronous circuit or timing circuit come trigger controller, and then control
Electromagnetic oven processed produces different operating powers, can to greatest extent improve the service efficiency of electric energy.
In an embodiment of the present utility model, the electromagnetic oven also includes：Drive circuit；
The drive circuit is connected between the controller and the resonance circuit, and the controller is used for by control
The drive circuit path to control the resonance circuit to open, by controlling the drive circuit open circuit to control the resonance
Circuit ends.
By setting drive circuit between resonance circuit and controller, drive circuit path or disconnected is controlled using controller
Road controls the unlatching or cut-off of resonance circuit, so can accurately control the unlatching or cut-off of resonance circuit, effectively control electricity
The operating power of magnetic stove.
In above-described embodiment of the present utility model, the drive circuit includes：The single-transistor of interconnection and driving
Protection location；
The single-transistor is connected with the resonance circuit, and the driving protection location is connected with the controller.
The present embodiment controls resonance circuit using single-transistor, and control circuit is simple, it is easy to accomplish.
In another embodiment of the present utility model, the controller includes the comparison circuit and the pulse-width controlled that are connected with each other
Unit, the comparison circuit is connected with the synchronous circuit；
The comparison circuit is used to be exported according to the two-way of the synchronous circuit when the electromagnetic oven is in heating mode
Voltage controls the pulse width control unit to export the first pulse signal, to control the drive circuit path or open circuit.
Comparison circuit is controlled when electromagnetic oven is in heating mode using synchronous circuit, and then controls pulse width control unit
The first pulse signal is exported, to control drive circuit path or open circuit, effectively controls what electromagnetic oven was produced in heating mode
Operating power.
In above-described embodiment of the present utility model, first pulse signal includes the first conducting duration and the first cut-off
Duration, the first conducting duration is determined that the first cut-off duration is by resonance electricity by the heating power of the electromagnetic oven
The resonant frequency on road determines.
Heating power according to electromagnetic oven determines the first conducting duration, and the resonant frequency according to resonance circuit determines first section
Only duration, can maximal efficiency using electromagnetic oven operating power, it is to avoid the wasting of resources.
In another embodiment of the present utility model, the timing circuit is connected with the pulse width control unit；
The timing circuit is used to being controlled when the electromagnetic oven is in charge mode pulse width control unit output the
Two pulse signals, to control the drive circuit path or open circuit.
Pulse width control unit is controlled to export the second pulse signal when electromagnetic oven is in charge mode using timing circuit,
To control drive circuit path or open circuit, the operating power that electromagnetic oven is produced in charge mode is effectively controlled.
In above-described embodiment of the present utility model, second pulse signal includes the second conducting duration and the second cut-off
Duration, the second conducting duration and the second cut-off duration are true by the charge power and charge efficiency of charging equipment
It is fixed.
Charge power and charge efficiency according to charging equipment determine the second conducting duration and the second cut-off duration so that
The operating power that electromagnetic oven is produced in charge mode absorbs by charging equipment to greatest extent, it is to avoid the wasting of resources.
In another embodiment of the present utility model, the timing circuit is integrated in one with the controller.
It is integrated on controller by by timing circuit, the circuit that can effectively shorten between timing circuit and controller is long
Degree, reduces timing circuit and takes up room.
In another embodiment of the present utility model, the resonance circuit is antiresonant circuit, the parallel resonance electricity
Road includes：The coil panel and resonant capacitance being connected in parallel.
Using the coil panel and resonance capacitance group into LC resonance circuits of electromagnetic oven, it has the function of frequency-selecting, can comform
Suitable frequency signal is selected in multi-frequency carries out resonance, electromagnetic oven is exported suitable operating power.
Construction of the present utility model and its other utility model purposes and beneficial effect will be by with reference to accompanying drawings
Description of preferred embodiments and it is more obvious understandable.
Brief description of the drawings
The structural representation of the electromagnetic oven embodiment one that Fig. 1 is provided for the utility model；
The structural representation of the electromagnetic oven embodiment two that Fig. 2 is provided for the utility model；
The circuit diagram of the electromagnetic oven embodiment that Fig. 3 is provided for the utility model；
Fig. 4 is the waveform diagram of the first pulse signal of pulse width control unit output in embodiment illustrated in fig. 3；
Fig. 5 is the waveform diagram of the second pulse signal of pulse width control unit output in embodiment illustrated in fig. 3.
Reference：
1：Resonance circuit； 2：Controller； 3：Power interface；
4：Synchronous circuit； 5：Timing circuit； 6：Drive circuit；
61：Single-transistor； 62：Drive protection location； 21：Comparison circuit；
22：Pulse width control unit； 11：Coil panel； 12：Resonant capacitance；
7：Filter circuit； 8：Fuse； 9：Piezo-resistance；
10：EMC circuits.
Specific embodiment
The structural representation of the electromagnetic oven embodiment one that Fig. 1 is provided for the utility model.As shown in figure 1, the present embodiment is carried
The electromagnetic oven of confession, including：Resonance circuit 1, controller 2 and power interface 3, first end and the controller 2 of the resonance circuit 1 connect
Connect, the second end of the resonance circuit 1 is connected with power interface 3.Further, the electromagnetic oven, also includes：Synchronous circuit 4 and fixed
When circuit 5.
Wherein, the synchronous circuit 4 and timing circuit 5 are connected with controller 2, the synchronous circuit 4 also with resonance circuit 1
Three-terminal link, the synchronous circuit 4 is used for the control of trigger controller 2 resonance circuit 1 when electromagnetic oven is in heating mode and opens
Or end, the timing circuit 5 is used for the control of trigger controller 2 resonance circuit 1 when electromagnetic oven is in charge mode and opens or cut
Only.
Optionally, the electromagnetic oven that the present embodiment is provided, also including human-computer interaction interface, user can be by man-machine interaction circle
Face selects the mode of operation of electromagnetic oven.In the present embodiment, electromagnetic oven at least includes heating mode and charge mode.Work as user
Pan to be heated is positioned on electromagnetic oven, and user by human-computer interaction interface select heating mode when, synchronous circuit 4 it is defeated
Go out voltage and act on controller 2, and trigger the controller 2 and send the first control signal, so control resonance circuit 1 unlatching or
Cut-off, so as to realize the normal heating process of electromagnetic oven.
When the heating process of electromagnetic oven terminate or pot cover on essence control module battery electric quantity it is not enough when, smart control will be provided with
The pot cover of module is positioned on electromagnetic oven, and when user selects charge mode by human-computer interaction interface, what timing circuit 5 was exported determines
When control signal function in controller 2, and trigger the controller 2 and send the second control signal, and then control opening for resonance circuit 1
Open or end, so as to realize to the purpose of essence control module wireless charging.
What deserves to be explained is, the electromagnetic oven that the present embodiment is provided, it is impossible in heating mode using the output of synchronous circuit 4
Voltage come trigger the controller 2 control resonance circuit 1 unlatching or cut-off, this is because the LC resonant frequencies of resonance circuit 1 are
Fixed, it can not produce less power to control the rechargeable battery in module to essence and carry out wireless charging.Generally, charge
The charge power of battery is several watts (such as 5W), and the electromagnetic heating power under heating mode can reach kilowatt (for example
21KW), so that when the control resonance circuit 1 of triggering pattern trigger controller 2 according to charge mode is opened, not only cause
Electromagnetic oven loss power is sent out very much, and causes charging energy waste, easily damages electromagnetic oven.
As another possible implementation, if having to using heating mode when synchronous circuit 4 control resonance circuit 1
Open, and then realize wireless charging, optionally, hardware circuit can only be increased, realize charge mode using the hardware circuit and add
Mutually switch between heat pattern.
And the present embodiment controls the charge power demand of rechargeable battery in module according to essence, what control timing circuit 5 sent determines
When control signal, make electromagnetic oven charge mode produce power it is accurately equal with charge power, improve the charging of rechargeable battery
Efficiency highest, reduces energy waste, it is not necessary to additionally increase hardware circuit, low cost.
The electromagnetic oven that the utility model embodiment is provided, including resonance circuit, controller and power interface, resonance electricity
The first end on road is connected with controller, and the second end of the resonance circuit is connected with power interface, and the electromagnetic oven is also included synchronously
Circuit and timing circuit, are connected by by synchronous circuit and timing circuit with controller, synchronous circuit also with resonance circuit
Three-terminal link, using the synchronous circuit, when electromagnetic oven is in heating mode, trigger controller control resonance circuit is opened or cut
Only, using timing circuit, when electromagnetic oven is in charge mode, trigger controller control resonance circuit is opened or ended, and it can root
According to the mode of operation of electromagnetic oven using synchronous circuit or timing circuit come trigger controller, and then it is different to control electromagnetic oven to produce
Operating power, can to greatest extent improve the service efficiency of electric energy.
Further, on the basis of above-described embodiment, the knot of the electromagnetic oven embodiment two that Fig. 2 is provided for the utility model
Structure schematic diagram.As shown in Fig. 2 the electromagnetic oven that embodiment of the present utility model is provided, also includes：Drive circuit 6.
The drive circuit 6 is connected between controller 2 and resonance circuit 1, and the controller 2 is used for by controlling driving electricity
The path of road 6 controls resonance circuit 1 to end to control resonance circuit 1 to open by controlling the open circuit of drive circuit 6.
In the present embodiment, as shown in Fig. 2 the drive circuit 6 includes：The single-transistor 61 of interconnection and driving are protected
Unit 62.
The single-transistor 61 is connected with resonance circuit 1, and the driving protection location 62 is connected with controller 2.
Used as a kind of example, in the present embodiment, single-transistor 61 is insulated gate bipolar transistor (Insulated
Gate Bipolar Transistor, abbreviation IGBT), it is IGBT Drive Protecting Circuits, driving protection to drive protection location 62
Unit 62 is used to drive IGBT on or off, and protects the IGBT without damage.
The present embodiment controls resonance circuit using single-transistor, and control circuit is simple, it is easy to accomplish.
What deserves to be explained is, IGBT switching frequencies are determined by itself, the IGBT of different model its operating frequency range
May be different.When being worked using single-transistor 61 in electromagnetic oven, it is contemplated that the operating power of household electrical appliance is different, by practice
Prove, in the switching frequency range of the general work 16k of the single-transistor 61~40kHZ used in the present embodiment.Optionally, herein
During scope, the operating power of electromagnetic oven is best to the heating effect of irony pan.
In the present embodiment, by setting drive circuit between resonance circuit and controller, control to drive using controller
Move circuit pathways or open circuit to control the unlatching or cut-off of resonance circuit, so can accurately control the unlatching of resonance circuit or cut
Only, the operating power of electromagnetic oven is effectively controlled.
Further, on the basis of embodiment as shown in Figure 2, the electromagnetic oven embodiment that Fig. 3 is provided for the utility model
Circuit diagram.As shown in figure 3, in the electromagnetic oven that the present embodiment is provided, controller noted above 2 includes the comparison circuit being connected with each other
21 and pulse width control unit 22, the comparison circuit 21 is connected with above-mentioned synchronous circuit 4.
The comparison circuit 21 is used to be controlled according to the two output voltage of synchronous circuit 4 when electromagnetic oven is in heating mode
Pulse width control unit 22 exports the first pulse signal, to control the path of drive circuit 6 or open circuit.
Specifically, comparison circuit 21 can be realized using example, in hardware such as comparators, it would however also be possible to employ software form realization, this
What embodiment did not limit comparison circuit 21 implements form, as long as can realize that the implementation of comparing function belongs to this
The protection domain of embodiment.
Comparison circuit is controlled when electromagnetic oven is in heating mode using synchronous circuit, and then controls pulse width control unit
The first pulse signal is exported, to control drive circuit path or open circuit, the operating power of electromagnetic oven generation is effectively controlled.
Shown in reference picture 3, comparison circuit 21 has two inputs and an output end B, and two inputs are respectively same
Phase input A1 and inverting input A2, in-phase input end A1 and inverting input A2 are connected respectively to the node of synchronous circuit 4
On P1 and node P2, that is, the two output voltage of synchronous circuit 4 is drawn from the node P1 and node P2 of synchronous circuit 4 respectively
Go out.
Accordingly, as shown in figure 3, synchronous circuit 4 is made up of multiple resistance, the two ends of synchronous circuit 4 are connected respectively to humorous
Shake the two ends of circuit 1.The first end of synchronous circuit 4 is connected in series with resistance R1, resistance R2 and resistance R3, wherein, resistance R1 connects
Ground, resistance R3 is connected to the second end of resonance circuit 1, and node P1 is located between resistance R1 and resistance R2；The second of synchronous circuit 4
End is connected in series with resistance R11, resistance R12, resistance R13 and resistance R14, wherein, resistance R14 ground connection, resistance R11 is connected to humorous
Shake the first end of circuit 1, node P2 is located between resistance R13 and resistance R14.
Specifically, when comparator inverting input A2 voltages are higher than in-phase input end A1 voltages, comparator output terminal B is defeated
The level upset for going out, control pulse width control unit 22 exports the first pulse signal, controls to drive electricity by first pulse signal
The path of road 6 or open circuit.
In the present embodiment, Fig. 4 is the waveform of the first pulse signal of pulse width control unit output in embodiment illustrated in fig. 3
Schematic diagram.As shown in figure 4, the first pulse signal includes the first conducting duration T1 and the first cut-off duration T2, the first conducting duration
T1 is determined that the first cut-off duration T2 is determined by the resonant frequency of resonance circuit 1 by the heating power of electromagnetic oven.
Specifically, the heating power of electromagnetic oven is bigger, the first conducting duration T1 is then more long.Specifically, the basis of controller 2
The heating power of electromagnetic oven calculates the first conducting duration T1, and the resonant frequency of resonance circuit 1 is by constituting the electricity of the circuit
Sense and electric capacity determine, it is relevant with the frequency input signal of resonance circuit 1, i.e., resonance when, frequency input signal be equal to resonance frequently
During rate, there is resonance in resonance circuit 1, and the impedance in resistance is in maximum rating, flows through the signal code of whole resonance circuit 1 most
It is small, and when frequency input signal is higher or lower than resonant frequency, resonance circuit 1 is in off resonance state, circuit impedance compares resonance
When it is small, that is, first cut-off duration T2 it is relevant with the frequency input signal and resonant frequency of resonance circuit 1.
As shown in figure 3, when the first conducting duration T1 of the first pulse signal acts on pulse width control unit 22, IGBT's
Grid G voltage is higher than the voltage of emitter E, now IGBT conductings, the resonance of resonance circuit 1, and electromagnetic oven is in heating mode, and this
When IGBT colelctor electrode C voltage be zero, it is possible to achieve the conducting of the no-voltage of IGBT, reduce the turn-on consumption of IGBT, prevent
IGBT is overheated.
Further, as shown in figure 3, above-mentioned timing circuit 5 is connected with the pulse width control unit 22 of controller 2.
The timing circuit 5 is used for the control pulse width control unit 22 when electromagnetic oven is in charge mode and exports the second pulse letter
Number, to control the path of drive circuit 6 or open circuit.
Specifically, timing circuit 5 can utilize component to be realized by designing the form of hardware circuit, it would however also be possible to employ in control
Application program is set in device processed 2 and realizes that implement form of the present embodiment also not to timing circuit 5 is carried out by software form
Limit, as long as can realize that the implementation of timing function belongs to the protection domain of the present embodiment.
In the present embodiment, Fig. 5 is the waveform of the second pulse signal of pulse width control unit output in embodiment illustrated in fig. 3
Schematic diagram.As shown in figure 5, the second pulse signal includes the second conducting duration T3 and the second cut-off duration T4, during second conducting
The cut-off duration T4 of T3 long and second determine by the charge power and charge efficiency of charging equipment.
Under normal circumstances, the second pulse signal being made up of the second conducting duration T3 and the second cut-off duration T4 is mainly used in
The unlatching or cut-off of resonance circuit 1 are controlled, and then obtains the charge power of electromagnetic oven, that is, the wireless charging power of electromagnetic oven
Determined by the second conducting duration T3 and the second cut-off duration T4, specifically, the second conducting duration T3 is bigger, the second cut-off duration T4
Smaller, the wireless charging power of electromagnetic oven is bigger.
And when setting second and turning on the cut-off duration T4 of duration T3 and second, can according to the charge power of charging equipment and
Charge efficiency determines that charge efficiency and charge power demand according to charging equipment set suitable second conducting duration
The cut-off duration T4 of T3 and second, make the wireless charging power of electromagnetic oven be slightly larger than or equal to the charge power of charging equipment, energy
Enough lower the additional waste of the energy, improve charge efficiency, specifically, the wireless charging power is calculated by controller 2, by arteries and veins
Control unit wide 22 is exported by the second conducting duration T3 and the second cut-off duration T4.
What deserves to be explained is, the second conducting duration T3 is bigger, and the ON time of IGBT is more long, the electric energy conversion electricity of electromagnetic oven
The ability of magnetic field magnetic energy is stronger, and electromagnetic noise is bigger.Generally, electromagnetic noise higher, also referred to as electromagnetism is uttered long and high-pitched sounds, low frequency
Refer to because frequency is less than 20K, the frequency range that human ear can be heard.
Specifically, when electromagnetic oven is in charge mode, the second conducting duration T3 is bigger, the second cut-off duration T4 is smaller,
The charge power of electromagnetic oven is bigger, and the second conducting duration T3 is smaller, and the second cut-off duration T4 is bigger, and the charge power of electromagnetic oven is got over
It is small.
In actual applications, the second cut-off duration T4 should be much larger than the second conducting duration T3, T4>>T3.Second conducting duration
T3 is bigger, and electromagnetic noise is bigger, produces vibration stronger under this low frequency magnetic field, stronger so as to cause surrounding air to resonate, so
Noise is bigger, as long as T3 sizes are suitable, human ear can't hear noise substantially.So electromagnetic oven is under charge mode, according to charging work(
Rate size, selects suitable T3 and T4 sizes, can meet power demand, makes charge efficiency highest, will not also produce noise.
Because electromagnetic oven is under charge mode, in below 5K, and in its heating mode, IGBT's opens the switching frequency of IGBT
It is 16K to 40K, power maximum 21KW to close frequency, accordingly, it would be desirable to using different triggering modes is come trigger controller 2 and then controls
The unlatching or cut-off of resonance circuit processed 1.
As a kind of possible implementation, in the electromagnetic oven, timing circuit 5 can be integrated in one with controller 2.
When timing circuit 5 is realized using hardware, timing circuit 5 is integrated on controller 2, can effectively shorten timing electricity
Line length between road 5 and controller 2, reduces timing circuit 5 and takes up room.When timing circuit 5 is using forms such as softwares
When realizing, the timing function of timing circuit 5 is integrated on controller 2, pulse signal can be realized using same controller 2
Generation and control, without component, reduce circuit complexity, low cost.
Further, as described in Figure 3, in the electromagnetic oven that the present embodiment is provided, above-mentioned resonance circuit 1 is parallel resonance electricity
Road, the antiresonant circuit includes：The coil panel 11 and resonant capacitance 12 being connected in parallel.
Using coil panel 11 and resonant capacitance 12 composition the LC resonance circuits 1 of electromagnetic oven, it has the function of frequency-selecting, can
Comforming suitable frequency signal of select in multi-frequency carries out resonance, electromagnetic oven is exported suitable operating power.
Further, as shown in figure 3, the electromagnetic oven also includes filter circuit 7, the filter circuit 7 is connected to power interface 3
Between resonance circuit 1, the filter circuit 7 includes that inductance L1 and electric capacity C1, inductance L1 are used to filter city's electrical interference and prevent
To outward leakage, electric capacity C1 is used to filter civil power noise signal the high-frequency signal of electromagnetic oven.
Optionally, it is located on electromagnetic oven in charging equipment, when during wireless charging, on electromagnetic oven and pan
Essence control device need to keep wireless communication state, the wireless messages that electromagnetic oven can be sent according to essence control device to adjust electromagnetic oven
Charge power size, can so make charging equipment meet charge power demand, and charge efficiency highest can be made again.When to be charged
At the end of the charging of equipment, the information that essence control device sends charging complete notifies electromagnetic oven, electromagnetic oven is stopped power output, electricity
Magnetic stove automatic shutdown.
Further, as shown in figure 3, the line voltage that the power interface 3 of electromagnetic oven is constituted with live wire and zero line is connected, profit
It is that electromagnetic oven is powered with civil power.
Optionally, fuse 8 is connected with the live wire of power supply, the fuse 8 is excessive in the electric current for flowing through supply lines
When, cut-out live wire and the path of electromagnetic oven, protect the safety of electromagnetic oven and user in time.
Optionally, piezo-resistance 9 is also associated between the live wire and zero line of power supply, the piezo-resistance 9 has high pressure
The effect of protection, for when the voltage of supply lines is higher than limit value, the short circuit of piezo-resistance 9 to make voltage lower, and protection is follow-up
Circuit.
Further, electromagnetism dual-purpose (Electro Magnetic are also associated between the live wire and zero line of power supply
Compatibility, abbreviation EMC) circuit 10, the EMC circuits 10 are used to preventing electromagnetic oven from disturbing outside utility grid, and with
When outside utility grid has interference, the interference is filtered.
Rectifier bridge BG1 is additionally provided between the EMC circuits 10 and resonance circuit 1, rectifier bridge BG1 is used to turn in alternating current
Turn to direct current.
The electromagnetic oven that the utility model embodiment is provided, when electromagnetic oven is in heating mode, is touched using synchronous circuit
Hair controller controls the unlatching or cut-off of resonance circuit, and when electromagnetic oven is in charge mode, is triggered using timing circuit
Controller controls the unlatching or cut-off of resonance circuit, and electromagnetic oven can be controlled to produce different operating powers, can be to greatest extent
Improve the service efficiency of electric energy, it is to avoid the wasting of resources.
Finally it should be noted that：Various embodiments above is only used to illustrate the technical solution of the utility model, rather than it is limited
System；Although being described in detail to the utility model with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (9)
1. a kind of electromagnetic oven, including：Resonance circuit (1), controller (2) and power interface (3), the resonance circuit (1)
First end is connected with the controller (2), and the second end of the resonance circuit (1) is connected with the power interface (3), its feature
It is also to include：Synchronous circuit (4) and timing circuit (5)；
The synchronous circuit (4) and the timing circuit (5) are connected with the controller (2), the synchronous circuit (4) also with
The three-terminal link of the resonance circuit (1), the synchronous circuit (4) when the electromagnetic oven is in heating mode for triggering
The controller (2) controls the resonance circuit (1) to open or end, and the timing circuit (5) is at the electromagnetic oven
The controller (2) is triggered when charge mode controls the resonance circuit (1) to open or end.
2. electromagnetic oven according to claim 1, it is characterised in that also include：Drive circuit (6)；
The drive circuit (6) is connected between the controller (2) and the resonance circuit (1), and the controller (2) is used for
The resonance circuit (1) is controlled to open by controlling the drive circuit (6) path, by controlling the drive circuit (6)
Open circuit is ended with controlling the resonance circuit (1).
3. electromagnetic oven according to claim 2, it is characterised in that the drive circuit (6) includes：The monocrystalline of interconnection
Body pipe (61) and driving protection location (62)；
The single-transistor (61) is connected with the resonance circuit (1), described to drive protection location (62) and the controller (2)
Connection.
4. electromagnetic oven according to claim 2, it is characterised in that the controller (2) is electric including the comparing being connected with each other
Road (21) and pulse width control unit (22), the comparison circuit (21) are connected with the synchronous circuit (4)；
The comparison circuit (21) is for defeated according to the two-way of the synchronous circuit (4) when the electromagnetic oven is in heating mode
Going out voltage controls the pulse width control unit (22) to export the first pulse signal, to control the drive circuit (6) path or disconnected
Road.
5. electromagnetic oven according to claim 4, it is characterised in that first pulse signal includes the first conducting duration
(T1) and the first cut-off duration (T2), first conducting duration (T1) determines by the heating power of the electromagnetic oven, described the
One cut-off duration (T2) is determined by the resonant frequency of the resonance circuit (1).
6. electromagnetic oven according to claim 4, it is characterised in that the timing circuit (5) and the pulse width control unit
(22) connect；
The timing circuit (5) exports for controlling the pulse width control unit (22) when the electromagnetic oven is in charge mode
Second pulse signal, to control the drive circuit (6) path or open circuit.
7. electromagnetic oven according to claim 6, it is characterised in that second pulse signal includes the second conducting duration
(T3) and second cut-off duration (T4), it is described second conducting duration (T3) and it is described second end duration (T4) set by be charged
Standby charge power and charge efficiency determine.
8. the electromagnetic oven according to any one of claim 1~7, it is characterised in that the timing circuit (5) and the control
Device (2) is integrated in one.
9. electromagnetic oven according to claim 1, it is characterised in that the resonance circuit (1) is antiresonant circuit, described
Antiresonant circuit includes：The coil panel (11) and resonant capacitance (12) being connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621223091.6U CN206176478U (en) | 2016-11-14 | 2016-11-14 | Electromagnetic oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621223091.6U CN206176478U (en) | 2016-11-14 | 2016-11-14 | Electromagnetic oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206176478U true CN206176478U (en) | 2017-05-17 |
Family
ID=58683776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621223091.6U Expired - Fee Related CN206176478U (en) | 2016-11-14 | 2016-11-14 | Electromagnetic oven |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358537A (en) * | 2018-09-30 | 2019-02-19 | 珠海格力电器股份有限公司 | Control system and control method for reducing noise of electromagnetic cooking appliance and cooking appliance |
| CN112398234A (en) * | 2019-08-19 | 2021-02-23 | 广东美的白色家电技术创新中心有限公司 | Output control device, method and storage medium |
| CN114062779A (en) * | 2020-07-31 | 2022-02-18 | 浙江绍兴苏泊尔生活电器有限公司 | Heating frequency detection method, device, equipment and storage medium |
-
2016
- 2016-11-14 CN CN201621223091.6U patent/CN206176478U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358537A (en) * | 2018-09-30 | 2019-02-19 | 珠海格力电器股份有限公司 | Control system and control method for reducing noise of electromagnetic cooking appliance and cooking appliance |
| CN112398234A (en) * | 2019-08-19 | 2021-02-23 | 广东美的白色家电技术创新中心有限公司 | Output control device, method and storage medium |
| WO2021031450A1 (en) * | 2019-08-19 | 2021-02-25 | 广东美的白色家电技术创新中心有限公司 | Output control device and method, and storage medium |
| JP2022545004A (en) * | 2019-08-19 | 2022-10-24 | ▲広▼▲東▼美的白色家▲電▼技▲術▼▲創▼新中心有限公司 | Output control device, method and storage medium |
| US11791660B2 (en) | 2019-08-19 | 2023-10-17 | Guangdong Midea White Home Appliance Technology Innovation Center Co., Inc. | Output control device for controlling an operation mode of a coil |
| JP7409751B2 (en) | 2019-08-19 | 2024-01-09 | ▲広▼▲東▼美的白色家▲電▼技▲術▼▲創▼新中心有限公司 | Output control device, method and storage medium |
| CN114062779A (en) * | 2020-07-31 | 2022-02-18 | 浙江绍兴苏泊尔生活电器有限公司 | Heating frequency detection method, device, equipment and storage medium |
| CN114062779B (en) * | 2020-07-31 | 2023-06-27 | 浙江绍兴苏泊尔生活电器有限公司 | Heating frequency detection method, device, equipment and storage medium |
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Granted publication date: 20170517 |