CN107567122A - Electromagnetic Heating cooking system and its heating control apparatus and control method - Google Patents
Electromagnetic Heating cooking system and its heating control apparatus and control method Download PDFInfo
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- CN107567122A CN107567122A CN201610520714.4A CN201610520714A CN107567122A CN 107567122 A CN107567122 A CN 107567122A CN 201610520714 A CN201610520714 A CN 201610520714A CN 107567122 A CN107567122 A CN 107567122A
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- heating
- half period
- heater
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
- H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
Abstract
The invention discloses a kind of method for heating and controlling of Electromagnetic Heating cooking system, comprise the following steps：The alternating current provided AC power is detected to obtain the exchange half period of alternating current；Heating cycle using continuous N number of exchange half period of alternating current as Electromagnetic Heating cooking system；In each heating cycle, the heater of Electromagnetic Heating cooking system is controlled to exchange half period continuous heating at continuous M, and stop heating in remaining (N M) individual sine wave period, it is adjusted with the heating power to heater, wherein, N is the integer more than or equal to 4, M is the positive integer less than N, so as to, realize that low-power heats and reduces transient heating power, simultaneously by increasing heating cycle, can be with the commutation time of increasing circuit, reduce the change of current waveform, so as to reduce harmonic current, improve the security performance of Electromagnetic Heating cooking system.The invention also discloses a kind of Electromagnetic Heating cooking system and its heating control apparatus.
Description
Technical field
The present invention relates to household electrical appliance technical field, more particularly to a kind of computer heating control side of Electromagnetic Heating cooking system
Method, a kind of control device of Electromagnetic Heating cooking system and a kind of Electromagnetic Heating cooking system with the device.
Background technology
Related Electromagnetic Heating cooking system typically carries out low-power heating using losing ripple mode, i.e., in predetermined period with
Certain dutycycle heating, so as to realize that low-power heats.In the related art, it is this to lose ripple mode typically with half-wave counting side
Formula carries out heating counting, if as shown in figure 1, all-wave heating power is 1200W, Electromagnetic Heating cooking system in power supply just
Half period heats, and stops heating in the negative half-cycle of power supply, to control heating power as 600W.But its shortcomings that existing
It is that the load current of power supply positive-negative half-cycle is uneven, and current waveform conversion frequency is fast, easily causes harmonic current test exceeded,
Electromagnetic Heating cooking system is even caused to damage.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is to propose a kind of method for heating and controlling of Electromagnetic Heating cooking system, and this method can reduce harmonic current.
It is another object of the present invention to propose a kind of heating control apparatus of Electromagnetic Heating cooking system.The present invention's
Another purpose is to propose a kind of Electromagnetic Heating cooking system.
To reach above-mentioned purpose, a kind of computer heating control for Electromagnetic Heating cooking system that one aspect of the present invention embodiment proposes
Method, comprise the following steps：The alternating current provided AC power is detected to obtain the exchange half period of the alternating current；
Heating cycle using continuous N number of exchange half period of the alternating current as the Electromagnetic Heating cooking system；Each described
In heating cycle, the heater of the Electromagnetic Heating cooking system is controlled to exchange half period continuous heating at continuous M, and
Stop heating in remaining (N-M) individual exchange half period, be adjusted with the heating power to the heater, wherein, N is
Integer more than or equal to 4, M are the positive integer less than N.
The method for heating and controlling of the Electromagnetic Heating cooking system proposed according to embodiments of the present invention, AC power is provided
Alternating current is detected to obtain the exchange half period of the alternating current, and using continuous N number of exchange half period of alternating current as
The heating cycle of Electromagnetic Heating cooking system, in each heating cycle, the heater of control Electromagnetic Heating cooking system exists
Continuous M exchange half period continuous heating, and stop heating in remaining (N-M) individual exchange half period, with to heater
Heating power be adjusted, wherein, N is integer more than or equal to 4, and M is the positive integer less than N, hereby it is achieved that low-power
Heat and reduce transient heating power, while by increasing heating cycle, current wave can be reduced with the commutation time of increasing circuit
The change of shape, so as to reduce harmonic current, improve the security performance of Electromagnetic Heating cooking system.
According to one embodiment of present invention, the alternating current provided AC power is detected to obtain the alternating current
The exchange half period, including：The zero crossing of the alternating current provided the AC power is detected to generate zero passage detection letter
Number；According to the exchange half period of alternating current described in the zero passage detection signal acquisition.
According to one embodiment of present invention, as N=4, in each heating cycle, if controlling the heater to exist
Continuous 2 exchange half period continuous heating and half periods stopping heating being exchanged at remaining 2, then the heater is with 2/4P
Heating power heated, wherein, P be the heater it is each exchange the half period heated when heating work(
Rate；If control the heater to exchange half period continuous heating at 1 and exchange half period stopping at remaining 3 to add
Heat, then the heater heated with 1/4P heating power；If the heater is controlled in continuous 3 exchanges half
Cycle continuous heating and remaining 1 exchange the half period stop heating, then the heater is entered with 3/4P heating power
Row heating.
According to another embodiment of the invention, as N=5, in each heating cycle, if controlling the heater
Half period continuous heating is exchanged at 1 and half period stopping heating being exchanged at remaining 4, then the heater is with 1/5P's
Heating power is heated, wherein, P is heating power of the heater when being heated each exchange half period；
If control the heater to exchange half period continuous heating at continuous 4 and exchange half period stopping at remaining 1 to add
Heat, then the heater heated with 4/5P heating power.
To reach above-mentioned purpose, a kind of heating control for Electromagnetic Heating cooking system that another aspect of the present invention embodiment proposes
Device processed, including：Detection module, the detection module are used to detect with described in acquisition the alternating current that AC power provides
Your exchange half period of hum bar；Control module, the control module are connected with the detection module, and the control module is used for
Heating cycle using continuous N number of exchange half period of the alternating current as the Electromagnetic Heating cooking system, and in each institute
In the heating cycle stated, the heater of the Electromagnetic Heating cooking system is controlled persistently to add in continuous M exchange half period
Heat, and stop heating in remaining (N-M) individual exchange half period, it is adjusted with the heating power to the heater, its
In, N is the integer more than or equal to 4, and M is the positive integer less than N.
The heating control apparatus of the Electromagnetic Heating cooking system proposed according to embodiments of the present invention, by detection module to handing over
The alternating current that stream power supply provides is detected to obtain your exchange half period of the hum bar, and control module is by the company of alternating current
Heating cycle of the continuous N number of exchange half period as Electromagnetic Heating cooking system, and in each heating cycle, control electromagnetism adds
The heater of heat cooking system exchanges half period continuous heating at continuous M, and in remaining (N-M) individual exchange half period
Stop heating, be adjusted with the heating power to heater, wherein, N is the integer more than or equal to 4, and M is less than N just
Integer is hereby it is achieved that low-power heats and reduces transient heating power, can be with increasing circuit while by increasing heating cycle
Commutation time, reduce the change of current waveform, so as to reduce the harmonic current in circuit, improve the peace of Electromagnetic Heating cooking system
Full performance.
According to one embodiment of present invention, the detection module further comprises：Zero passage detection unit, for described
The zero crossing for the alternating current that AC power provides is detected to generate zero passage detection signal；Acquiring unit, for according to
The exchange half period of alternating current described in zero passage detection signal acquisition.According to one embodiment of present invention, as N=4, each
Heating cycle, if the control module controls the heater to exchange half period continuous heating at continuous 2 and in residue
2 exchange half periods stop heating, then the heater is heated with 2/4P heating power, wherein, P to be described plus
Heating power of the thermal when being heated each exchange half period；If the control module controls the heater
Half period continuous heating is exchanged at 1 and half period stopping heating being exchanged at remaining 3, then the heater is with 1/4P's
Heating power is heated；If the control module controls the heater to exchange half period continuous heating at continuous 3
And half period stopping heating being exchanged at remaining 1, then the heater is heated with 3/4P heating power.
According to another embodiment of the invention, as N=5, in each heating cycle, if the control module controls
The heater exchanges half period continuous heating at 1 and half period stopping heating, the then heating is exchanged at remaining 4
Device is heated with 1/5P heating power, wherein, P is the heater when being heated each exchange half period
Heating power；If the control module controls the heater to exchange half period continuous heating at continuous 4 and surplus
1 remaining exchange half period stops heating, then the heater is heated with 4/5P heating power.
To reach above-mentioned purpose, a kind of Electromagnetic Heating cooking system that another aspect of the invention embodiment proposes, including institute
The heating control apparatus for the Electromagnetic Heating cooking system stated.
The Electromagnetic Heating cooking system proposed according to embodiments of the present invention, pass through adding for above-mentioned Electromagnetic Heating cooking system
Heat control device, realize that low-power heats and reduces transient heating power, while by increasing heating cycle, can be with increasing circuit
Commutation time, reduce the change of current waveform, so as to reduce the harmonic current in circuit, reduce potential safety hazard, lift user
Experience.
According to the specific embodiment of the present invention, the Electromagnetic Heating cooking system can be electromagnetic oven, electromagnetic rice cooker
Or prevention electromagnetic pressure cooker.
Brief description of the drawings
Fig. 1 is the waveform diagram of the low-power heating of Electromagnetic Heating cooking system in correlation technique, wherein, heating power
For the half of all-wave heating power；
Fig. 2 is the flow chart of the method for heating and controlling of Electromagnetic Heating cooking system according to embodiments of the present invention；
Fig. 3 a are the operation principles of the method for heating and controlling of Electromagnetic Heating cooking system according to an embodiment of the invention
Figure, wherein, N=4；
Fig. 3 b are that the work of the method for heating and controlling of Electromagnetic Heating cooking system in accordance with another embodiment of the present invention is former
Reason figure, wherein, N=4；
Fig. 3 c are the work originals according to the method for heating and controlling of the Electromagnetic Heating cooking system of another embodiment of the invention
Reason figure, wherein, N=4；
Fig. 4 a are the operation principles of the method for heating and controlling of Electromagnetic Heating cooking system according to an embodiment of the invention
Figure, wherein, N=5；
Fig. 4 b are that the work of the method for heating and controlling of Electromagnetic Heating cooking system in accordance with another embodiment of the present invention is former
Reason figure, wherein, N=5；
Fig. 5 a are the block diagrams of the heating control apparatus of the Electromagnetic Heating cooking system of the embodiment of the present invention；
Fig. 5 b are the square frame signals of the heating control apparatus of the Electromagnetic Heating cooking system of a specific embodiment of the invention
Figure；And
Fig. 6 is the circuit theory diagrams of the Electromagnetic Heating cooking system of the embodiment of the present invention.
Reference：
Detection module 1, control module 2, zero passage detection unit 3 and acquiring unit 4；
Heating control apparatus 10, EMC modules 3, rectification module 4, filtration module 5, resonance modules 6 and power switch pipe 7.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings come describe the embodiment of the present invention proposition Electromagnetic Heating cooking system and its heating control apparatus
And control method.
Fig. 2 is the flow chart of the method for heating and controlling of Electromagnetic Heating cooking system according to embodiments of the present invention.Such as Fig. 2 institutes
Show, the method for heating and controlling comprises the following steps：
S1：The alternating current provided AC power is detected to obtain the exchange half period of alternating current.
According to one embodiment of present invention, the alternating current provided AC power is detected to obtain the friendship of alternating current
The stream half period includes：The zero crossing of the alternating current provided AC power is detected to generate zero passage detection signal；According to mistake
Zero detection signal obtains the exchange half period of alternating current.
Specifically, the zero crossing of the alternating current provided AC power is detected to generate zero passage detection signal, is appointed
Anticipate between two adjacent zero passage detection signals as an exchange half period, for example, as shown in figs 3 a-3 c, zero crossing A and B it
Between for the first exchange half period I, be the second exchange half period II between zero crossing B and C, be the between zero crossing C and zero crossing D
Three exchange half periods III, it was the 4th exchange half period IV between zero crossing D and zero crossing E.
S2：Heating cycle using continuous N number of exchange half period of alternating current as Electromagnetic Heating cooking system.
Specifically, as shown in figs 3 a-3 c, if N=4, the first exchange half period I to the 4th is exchanged into the half period IV
Heating cycle as an Electromagnetic Heating cooking system；As shown in Fig. 4 a-4b, if N=5, half period I is exchanged by first
Heating cycle to the 5th exchange half period V as an Electromagnetic Heating cooking system.
S3：In each heating cycle, the heater of Electromagnetic Heating cooking system is controlled to exchange half cycle at continuous M
Phase continuous heating, and stop heating in remaining (N-M) individual sine wave period, adjusted with the heating power to heater
It is whole, wherein, N is the integer more than or equal to 4, and M is the positive integer less than N.
Further, in heating process, the heating power of control Electromagnetic Heating cooking system is less than or equal to default work(
Rate such as 1300W.
Specifically, if the heating cycle of heater is N number of exchange half period, controllable refrigerating/heating apparatus is continuous
M exchange half period continuous heating, and remaining (N-M) it is individual exchange half period stop heating, thus, by changing M and N
Numerical value be adjusted with the heating power to heater.For example, if the heater of Electromagnetic Heating cooking system
The heating power for carrying out all-wave heating is 1200W, and all-wave heating herein refers to that heater persistently enters in each exchange half period
Row heating, then exchange half period continuous heating and in remaining (N-M) individual exchange half cycle at continuous M in control heater
When phase stops heating, the heating power of heater is 1200*M/N, so as to different by changing M and N Numerical Implementation
Low-power heats.
According to one embodiment of present invention, as shown in figs 3 a-3 c, as N=4, in each heating cycle, if control
Heater exchanges half period continuous heating at continuous 2 and half period stopping heating being exchanged at remaining 2, then heater
Heated with 2/4P heating power, wherein, P is heating work(of the heater when being heated each exchange half period
Rate is the heating power of all-wave heating；If heater is controlled to exchange half period continuous heating at 1 and in remaining 3 friendships
Half period stopping heating being flowed, then heater is heated with 1/4P heating power；If heater is controlled at continuous 3
Exchange half period continuous heating and half period stopping heating being exchanged at remaining 1, then heater is with 3/4P heating power
Heated.
Specifically, as shown in Figure 3 a, the heating cycle of heater is 4 exchange half periods, if control heating dress
Put and half period continuous heating is exchanged at continuous 2 and half period stopping heating being exchanged at remaining 2, that is, control heater to exist
First exchange half period I, the second exchange continuous heating of half period II, and heater is controlled in the 3rd exchange half period III and the
Four exchange half periods IV stopped heating, and now heating duty ratio is 2/4.Assuming that heater is carried out in each exchange half period
Heating power P during heating is 1200W, then when being heated according to heating duty ratio for 2/4 control heater, heating dress
The heating power put will be adjusted to.
As shown in Figure 3 b, the heating cycle of heater is 4 exchange half periods, if control heater is in 1 friendship
Flow half period continuous heating and half period stopping heating being exchanged at remaining 3, that is, control heater to exchange half cycle first
Phase I continuous heating, and control heater to exchange exchange half period half period the III, the 4th in the second exchange half period the II, the 3rd
IV stops heating, and now heating duty ratio is 1/4.Assuming that heating of the heater when being heated each exchange half period
Power P is 1200W, then when being heated according to heating duty ratio for 1/4 control heater, the heating power of heater
For 300W.
As shown in Figure 3 c, the heating cycle of heater is 4 exchange half periods, if control heater is continuous
3 exchange half period continuous heatings and half period stopping heating being exchanged at 1, that is, control heater in the first exchange half period
I, the second exchange half period II exchanged the continuous heating of half period III with the 3rd, and controlled heater to exchange the half period IV the 4th
Stop heating, now heating duty ratio is 3/4.Assuming that heating work(of the heater when being heated each exchange half period
Rate P is 1200W, then when being heated according to heating duty ratio for 3/4 control heater, the heating power of heater is
900W。
According to one embodiment of present invention, as shown in Fig. 4 a-4b, as N=5, in each heating cycle, if control
Heater exchanges half period continuous heating at 1 and half period stopping heating being exchanged at remaining 4, then heater is with 1/
5P heating power is heated, wherein, P is heating work(of the heater when being heated each exchange half period
Rate；If control heater to exchange half period continuous heating at continuous 4 and exchange half period stopping at remaining 1 to add
Heat, then heater heated with 4/5P heating power.
Specifically, as shown in fig. 4 a, the heating cycle of heater is 5 exchange half periods, if control heating dress
Put and half period continuous heating is exchanged at 1 and half period stopping heating being exchanged at remaining 4, that is, control heater first
Half period I continuous heating is exchanged, and controls heater to exchange the stopping of half period V in the second exchange half period II to the 5th and adds
Heat, now heating duty ratio is 1/5.Assuming that heating power P of the heater when being heated each exchange half period is
1200W, then when being heated according to heating duty ratio for 1/5 control heater, the heating power of heater is 240W.
As shown in Figure 4 b, the heating cycle of heater is 5 exchange half periods, if control heater is continuous
4 exchange half period continuous heatings and half period stopping heating being exchanged at remaining 1, that is, control heater to be exchanged first
Half period I to the 4th exchanges the continuous heating of half period IV, and controls heater to stop heating in the 5th exchange half period V, this
When heating duty ratio be 4/5.Assuming that heating power P of the heater when being heated each exchange half period is 1200W,
When so being heated according to heating duty ratio for 4/5 control heater, heating devices heat power is 960W.As above institute
State, in each heating cycle, control the heater of Electromagnetic Heating cooking system persistently to add in continuous M exchange half period
Heat, and stop heating in remaining (N-M) individual exchange half period, pass through the tune for changing M and N numerical value to realize to heating power
It is whole, and then realize different low-power heating.
It should be appreciated that the main circuit of Electromagnetic Heating cooking system is inductive circuit, the heating cycle of low-power heating
Longer, the change of current waveform is slower, and the value of caused higher harmonic current is smaller, meanwhile, wink during heating can be controlled
Between power be less than or equal to 1300W, electric current is suitably reduced.So, the commutation time in whole circuit lengthens, and the electricity in circuit
Stream is smaller, and current waveform change is slow, can reach the purpose for suppressing harmonic current.
To sum up, the method for heating and controlling of the Electromagnetic Heating cooking system proposed according to embodiments of the present invention, to AC power
The alternating current of offer is detected to obtain the exchange half period of the alternating current, and by continuous N number of exchange half cycle of alternating current
Heating cycle of the phase as Electromagnetic Heating cooking system, in each heating cycle, control the heating of Electromagnetic Heating cooking system
Device exchanges half period continuous heating at continuous M, and stops heating in remaining (N-M) individual exchange half period, adds with Dui
The heating power of thermal is adjusted, wherein, N is the integer more than or equal to 4, and M is the positive integer less than N, hereby it is achieved that low
Power heats and reduces transient heating power, while by increasing heating cycle, can reduce electricity with the commutation time of increasing circuit
The change of waveform is flowed, so as to reduce harmonic current, improves the security performance of Electromagnetic Heating cooking system.
The invention also provides a kind of heating control apparatus of Electromagnetic Heating cooking system.
Fig. 5 a are the block diagrams of the heating control apparatus of Electromagnetic Heating cooking system according to embodiments of the present invention.Such as
Shown in Fig. 5 a, the heating control apparatus 10 includes：Detection module 1 and control module 2.
Wherein, detection module 1 is used to detect the alternating current that AC power provides to obtain the exchange of alternating current half
Cycle；Control module 2 is connected with detection module 1, and control module 2 is used for continuous N number of exchange half period using alternating current as electricity
The heating cycle of magnetic heating cooking system, and in each heating cycle, control the heater of Electromagnetic Heating cooking system
Half period continuous heating is exchanged at continuous M, and stops heating in remaining (N-M) individual exchange half period, to be filled to heating
The heating power put is adjusted, wherein, N is the integer more than or equal to 4, and M is the positive integer less than N.
Further, in heating process, control module 2 controls the heating power of Electromagnetic Heating cooking system to be less than or wait
In predetermined power such as 1300W.
If the heating cycle of heater is N number of exchange half period, 2 controllable refrigerating/heating apparatus of control module is continuous
M exchange half period continuous heating, and remaining (N-M) it is individual exchange half period stop heating, thus, by changing M and N
Numerical value be adjusted with the heating power to heater.For example, if the heater of Electromagnetic Heating cooking system
The heating power for carrying out all-wave heating is 1200W, and all-wave heating herein refers to that heater continues within each exchange half period
Heated, control module 2 controls heater in continuous M ac cycle continuous heating and in remaining (N-M) individual friendship
Flowing the half period stops heating, then the heating power of heater be 1200*M/N, so that control module 2 is by changing M and N number
Value realizes different power heating.
As shown in Figure 5 b, detection module 1 further comprises：Zero passage detection unit 3 and acquiring unit 4, wherein, zero passage detection
The zero crossing for the alternating current that unit 3 is used to provide AC power is detected to generate zero passage detection signal；Acquiring unit 4 is used
In the exchange half period according to zero passage detection signal acquisition alternating current.Specifically, zero passage detection unit 3 is provided AC power
The zero crossing of alternating current detected to generate zero passage detection signal, be one between the adjacent zero passage detection signal of any two
The individual exchange half period, for example, as shown in figs 3 a-3 c, between zero crossing A and B for the first exchange half period I, zero crossing B and C it
Between for the second exchange half period II, be the 3rd exchange half period III, zero crossing D and zero crossing E between zero crossing C and zero crossing D
Between for the 4th exchange the half period IV.
According to one embodiment of present invention, as shown in figs 3 a-3 c, as N=4, in each heating cycle, if control
Module 2 controls heater to exchange half period continuous heating at continuous 2 and half period stopping heating being exchanged at remaining 2,
Then heater is heated with 2/4P heating power, wherein, P is that the heater is carried out in each exchange half period
Heating power during heating；If control module 2 controls heater to exchange half period continuous heating at 1 and remaining 3
The individual exchange half period stops heating, then the heater is heated with 1/4P heating power；If control module 2 controls
Heater exchanges half period continuous heating at continuous 3 and half period stopping heating, the then heating is exchanged at remaining 1
Device is heated with 3/4P heating power.
Specifically, as shown in Figure 3 a, the heating cycle of heater is 4 exchange half periods, if control module 2 is controlled
Refrigerating/heating apparatus exchanges half period continuous heating at continuous 2 and half period stopping heating being exchanged at remaining 2, that is, controls mould
Block 2 controls heater to exchange half period I, the second exchange continuous heating of half period II first, and controls heater the
Three exchange half periods III exchanged the stopping heating of half period IV with the 4th, and now heating duty ratio is 2/4.Assuming that heater is every
Heating power P when the individual exchange half period is heated is 1200W, then control module 2 is 2/4 control according to heating duty ratio
When refrigerating/heating apparatus is heated, the heating power of heater is 600W.
As shown in Figure 3 b, the heating cycle of heater is 4 exchange half periods, if the control heating dress of control module 2
Put and half period continuous heating is exchanged at 1 and half period stopping heating being exchanged at remaining 3, be i.e. control module 2 controls heating
Device exchanges half period I continuous heating first, and controls heater to exchange the half period in the second exchange half period the II, the 3rd
IIIth, the 4th exchange half period IV stopped heating, and now heating duty ratio is 1/4.Assuming that heater is in each exchange half period
Heating power P when being heated is 1200W, then when being heated according to heating duty ratio for 1/4 control heater,
The heating power of heater is 300W.
As shown in Figure 3 c, the heating cycle of heater is 4 exchange half periods, if the control heating dress of control module 2
Put and half period continuous heating is exchanged at continuous 3 and half period stopping heating being exchanged at 1, be i.e. control module 2 controls heating
Device exchanges the continuous heating of half period III with the 3rd, and controls heating to fill in the first exchange half period I, the second exchange half period II
Put and stop heating in the 4th exchange half period IV, now heating duty ratio is 3/4.Assuming that heater is in each exchange half period
Heating power P when being heated is 1200W, then when being heated according to heating duty ratio for 3/4 control heater,
The heating power of heater is 900W.
According to another embodiment of the invention, as shown in Fig. 4 a-4b, as N=5, in each heating cycle, if control
Molding block 2 controls heater to exchange half period continuous heating at 1 and half period stopping heating being exchanged at remaining 4, then
Heater is heated with 1/5P heating power, wherein, P is heater when being heated each exchange half period
Heating power；If control module 2 controls heater to exchange half period continuous heating at continuous 4 and at remaining 1
Half period stopping heating being exchanged, then heater is heated with 4/5P heating power.
Specifically, as shown in fig. 4 a, the heating cycle of heater is 5 exchange half periods, if control module 2 is controlled
Refrigerating/heating apparatus exchanges half period continuous heating at 1 and half period stopping heating, i.e. control module 2 is exchanged at remaining 4
Control heater to exchange half period I continuous heating first, and control heater to exchange the half period II to the 5th second
The stopping heating of half period V is exchanged, now heating duty ratio is 1/5.Assuming that heater is added in each exchange half period
Heating power P when hot is 1200W, then when being heated according to heating duty ratio for 1/5 control heater, heater
Heating power be 240W.
As shown in Figure 4 b, the heating cycle of heater is 5 exchange half periods, if the control heating dress of control module 2
Put and half period continuous heating is exchanged at continuous 4 and half period stopping heating being exchanged at remaining 1, i.e., control module 2 is controlled
Refrigerating/heating apparatus exchanges the continuous heating of half period IV in the first exchange half period I to the 4th, and controls heater to be handed over the 5th
The stopping heating of half period V is flowed, now heating duty ratio is 4/5.Assuming that heater is heated in each exchange half period
When heating power P be 1200W, then according to heating duty ratio be 4/5 control heater heated when, heater adds
Thermal power is 960W.
As described above, in each heating cycle, control module 2 controls the heater of Electromagnetic Heating cooking system even
M continuous exchange half period continuous heating, and stop heating in remaining (N-M) individual exchange half period, by changing M's and N
Numerical value realizes different low-power heating to realize the adjustment to power heating.
It should be appreciated that the main circuit of Electromagnetic Heating cooking system is inductive circuit, the heating cycle of low-power heating
Longer, the change of current waveform is slower, and the value of caused higher harmonic current is smaller, meanwhile, wink during heating can be controlled
Between power be less than or equal to 1300W, electric current is suitably reduced.So, the commutation time in whole circuit lengthens, and the electricity in circuit
Stream is smaller, and current waveform change is slow, can reach the purpose for suppressing harmonic current.
To sum up, the heating control apparatus of the Electromagnetic Heating cooking system proposed according to embodiments of the present invention, by detecting mould
The alternating current that block is provided AC power is detected to obtain your exchange half period of the hum bar, and control module will exchange
Heating cycle of the continuous N number of exchange half period of electricity as Electromagnetic Heating cooking system, and in each heating cycle, control
The heater of Electromagnetic Heating cooking system exchanges half period continuous heating at continuous M, and in remaining (N-M) individual exchange
Half period stops heating, is adjusted with the heating power to heater, wherein, N is integer more than or equal to 4, M be less than
N positive integer is hereby it is achieved that low-power heats and reduces transient heating power, while by increasing heating cycle, can increase
The commutation time of circuit, reduce the change of current waveform, so as to reduce the harmonic current in circuit, improve Electromagnetic Heating culinary art
The security performance of system.
The invention also provides a kind of Electromagnetic Heating cooking system.
Fig. 6 is the circuit theory diagrams of Electromagnetic Heating cooking system according to embodiments of the present invention.As shown in fig. 6, the electromagnetism
Heating cooking system includes heating control apparatus 10.
As shown in fig. 6, Electromagnetic Heating cooking system also includes EMC (Electro Magnetic Compatibility, electricity
Magnetic compatibility) module 3, rectification module 4, filtration module 5, resonance modules 6 and power switch pipe 7.
Wherein, the first input end of EMC modules 3 is connected with one end L of AC power, the second input of EMC modules 3 with
The other end N of AC power is connected, the High-frequency Interference or thunderbolt interference that EMC modules 3 are used to avoid in AC power；Rectification module
4 first input end and the second input are connected with the first output end of EMC modules 3 and the second output end respectively, rectification module 4
Alternating current for AC power to be provided is converted to direct current；Filtration module 5 includes filter inductance L0 and filter capacitor C0, filter
Ripple inductance L0 one end is connected with the output end of rectification module 4；Resonance modules 6 include resonant capacitance C1 and resonant inductance in parallel
L1, resonant capacitance C1 in parallel and resonant inductance L1 one end are connected with the filter inductance L0 other end, resonant capacitance in parallel
C1 and resonant inductance the L1 other end are connected with the colelctor electrode of power switch pipe 7, and resonance modules 6 are used to add pan progress resonance
Heat；The grid of power switch pipe 7 is connected with heating control apparatus 10.
According to the specific embodiment of the present invention, Electromagnetic Heating cooking system can be electromagnetic oven, electromagnetic rice cooker or electricity
Magnetic pressure pot.
To sum up, the Electromagnetic Heating cooking system proposed according to embodiments of the present invention, passes through the Electromagnetic Heating of above-described embodiment
The heating control apparatus of cooking system, the current balance of power supply positive-negative half-cycle can be made within whole heating cycle, so as to drop
Harmonic current in low circuit, reduces potential safety hazard, improves Consumer's Experience.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
1. a kind of method for heating and controlling of Electromagnetic Heating cooking system, it is characterised in that comprise the following steps：
The alternating current provided AC power is detected to obtain the exchange half period of the alternating current；
Heating cycle using continuous N number of exchange half period of the alternating current as the Electromagnetic Heating cooking system；
In each heating cycle, the heater of the Electromagnetic Heating cooking system is controlled in continuous M exchange half
Cycle continuous heating, and stop heating in remaining (N-M) individual exchange half period, entered with the heating power to the heater
Row adjustment, wherein, N is the integer more than or equal to 4, and M is the positive integer less than N.
2. the method for heating and controlling of Electromagnetic Heating cooking system according to claim 1, it is characterised in that to AC power
The alternating current of offer is detected to obtain the exchange half period of the alternating current, including：
The zero crossing of the alternating current provided the AC power is detected to generate zero passage detection signal；
According to the exchange half period of alternating current described in the zero passage detection signal acquisition.
3. the method for heating and controlling of Electromagnetic Heating cooking system according to claim 1, it is characterised in that as N=4,
In each heating cycle,
If the heater is controlled to exchange half period continuous heating at continuous 2 and stop in remaining 2 exchange half periods
Only heating, then the heater is heated with 2/4P heating power, wherein, P is the heater in each exchange
Heating power when half period is heated；
If control the heater to exchange half period continuous heating at 1 and exchange half period stopping at remaining 3 to add
Heat, then the heater heated with 1/4P heating power；
If the heater is controlled to exchange half period continuous heating at continuous 3 and stop in remaining 1 exchange half period
Only heat, then the heater is heated with 3/4P heating power.
4. the method for heating and controlling of Electromagnetic Heating cooking system according to claim 1, it is characterised in that as N=5,
In each heating cycle,
If control the heater to exchange half period continuous heating at 1 and exchange half period stopping at remaining 4 to add
Heat, then the heater heated with 1/5P heating power, wherein, P be the heater in each exchange half cycle
Heating power when phase is heated；
If the heater is controlled to exchange half period continuous heating at continuous 4 and stop in remaining 1 exchange half period
Only heat, then the heater is heated with 4/5P heating power.
A kind of 5. heating control apparatus of Electromagnetic Heating cooking system, it is characterised in that including：
Detection module, the detection module are used to detect to obtain the alternating current alternating current that AC power provides
Exchange the half period；
Control module, the control module are connected with the detection module, and the control module is used for the company of the alternating current
Heating cycle of the continuous N number of exchange half period as the Electromagnetic Heating cooking system, and in each described heating cycle, control
The heater for making the Electromagnetic Heating cooking system exchanges half period continuous heating at continuous M, and at remaining (N-M)
The individual exchange half period stops heating, is adjusted with the heating power to the heater, wherein, N is whole more than or equal to 4
Number, M are the positive integer less than N.
6. the heating control apparatus of Electromagnetic Heating cooking system according to claim 5, it is characterised in that the detection mould
Block further comprises：
Zero passage detection unit, the zero crossing of the alternating current for providing the AC power are detected to generate zero passage detection
Signal；
Acquiring unit, the exchange half period for the alternating current according to the zero passage detection signal acquisition.
7. the heating control apparatus of Electromagnetic Heating cooking system according to claim 5, it is characterised in that as N=4,
In each heating cycle,
If the control module controls the heater to exchange half period continuous heating at continuous 2 and at remaining 2
Exchanging half period stopping heating, then the heater is heated with 2/4P heating power, wherein, P fills for the heating
Put the heating power when being heated each exchange half period；
If the control module controls the heater to exchange half period continuous heating at 1 and in remaining 3 exchanges
Half period stops heating, then the heater is heated with 1/4P heating power；
If the control module controls the heater to exchange half period continuous heating at continuous 3 and at remaining 1
Half period stopping heating being exchanged, then the heater is heated with 3/4P heating power.
8. the heating control apparatus of Electromagnetic Heating cooking system according to claim 5, it is characterised in that as N=5,
In each heating cycle,
If the control module controls the heater to exchange half period continuous heating at 1 and in remaining 4 exchanges
Half period stops heating, then the heater is heated with 1/5P heating power, wherein, P is that the heater exists
Heating power when each exchange half period is heated；
If the control module controls the heater to exchange half period continuous heating at continuous 4 and at remaining 1
Half period stopping heating being exchanged, then the heater is heated with 4/5P heating power.
9. a kind of Electromagnetic Heating cooking system, it is characterised in that add including the electromagnetism according to any one of claim 5-8
The heating control apparatus of heat cooking system.
10. Electromagnetic Heating cooking system according to claim 9, it is characterised in that the Electromagnetic Heating cooking system is
Electromagnetic oven, electromagnetic rice cooker or prevention electromagnetic pressure cooker.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610520714.4A CN107567122B (en) | 2016-07-01 | 2016-07-01 | Electromagnetic heating cooking system and heating control device and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610520714.4A CN107567122B (en) | 2016-07-01 | 2016-07-01 | Electromagnetic heating cooking system and heating control device and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107302809A (en) * | 2016-08-18 | 2017-10-27 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic Heating cooking system and its heating control apparatus and control method |
| CN110941204A (en) * | 2019-11-19 | 2020-03-31 | 中山市精体电子科技有限公司 | Cooking machine control system with two-dimensional code scanning function |
| CN115494894A (en) * | 2022-07-20 | 2022-12-20 | 烯旺新材料科技股份有限公司 | Temperature control method of electric heating assembly |
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| US3651753A (en) * | 1969-09-17 | 1972-03-28 | Intertrade Warenverkehrsgesell | Electric cooker with automatic current control |
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| CN107302809A (en) * | 2016-08-18 | 2017-10-27 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic Heating cooking system and its heating control apparatus and control method |
| CN107302809B (en) * | 2016-08-18 | 2020-12-22 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating cooking system and heating control device and control method thereof |
| CN110941204A (en) * | 2019-11-19 | 2020-03-31 | 中山市精体电子科技有限公司 | Cooking machine control system with two-dimensional code scanning function |
| CN115494894A (en) * | 2022-07-20 | 2022-12-20 | 烯旺新材料科技股份有限公司 | Temperature control method of electric heating assembly |
| CN115494894B (en) * | 2022-07-20 | 2024-01-16 | 烯旺新材料科技股份有限公司 | Temperature control method of electric heating assembly |
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|---|---|
| CN107567122B (en) | 2020-12-22 |
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