CN107949087A - The Poewr control method and power control device and electromagnetic oven of electromagnetic heater - Google Patents
The Poewr control method and power control device and electromagnetic oven of electromagnetic heater Download PDFInfo
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- CN107949087A CN107949087A CN201610891452.2A CN201610891452A CN107949087A CN 107949087 A CN107949087 A CN 107949087A CN 201610891452 A CN201610891452 A CN 201610891452A CN 107949087 A CN107949087 A CN 107949087A
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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
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Abstract
The present invention provides the Poewr control method and power control device and electromagnetic oven of a kind of electromagnetic heater.Wherein, after detecting cookware is heated, start timing, in the given time, measure the temperature of the power tube of electromagnetic heater；Calculate the change slope on any two time point of temperature in the given time；And by the change slope of temperature compared with default slope, and according to comparative result determine whether adjust electromagnetic heater power.Correspondingly, the power control device present invention also offers a kind of electromagnetic heater and the electromagnetic oven with the power control device.By technical scheme, the temperature change slope of real-time monitoring power tube can be passed through so that different performance numbers is assigned to different cookwares, is heated with optimal power, improves the service life of electromagnetic heater, ensure the reliability of electromagnetic heater.
Description
Technical field
The present invention relates to electromagnetic heating technique field, in particular to a kind of Power Control side of electromagnetic heater
Method and power control device, and electromagnetic oven.
Background technology
When electromagnetic heater from different pot accessories in use, existing electromagnetic heater power resonance LC parameters
Fixation is non-adjustable, and is uniformly heated with high-power, it is thus impossible to match all cookwares.When electromagnetic heater power
When being mismatched with cookware power, i.e., when power is excessive, calutron built-in component temperature can be caused excessive.Existing technology is,
When temperature is excessive, then go to stop heating or Power Regulation heating, the temperature rise of component is very high at this time, to product reliability and
Service life all has an impact.
The content of the invention
It is contemplated that at least solve one of technical problem present in the prior art or correlation technique.
For this reason, an object of the present invention is to provide a kind of Poewr control method of electromagnetic heater, Ke Yiyou
Effect ground solves the problems, such as that electromagnetic heater power and cookware power are unmatched, improves the service life of electromagnetic equipment, ensures that electromagnetism is set
Standby reliability.
It is another object of the present invention to the power control device for proposing a kind of electromagnetic heater and there is power
The electromagnetic oven of control device.
In view of this, according to an embodiment of the invention, there is provided a kind of Poewr control method of electromagnetic heater, bag
Include：After detecting cookware is heated, start timing, in the given time, measure the work(of the electromagnetic heater
The temperature of rate pipe；Calculate change slope of the temperature on any two time point within the scheduled time；And by institute
The change slope of temperature is stated compared with default slope, and is determined whether according to comparative result to adjust the electromagnetic heater
Power.
In the technical scheme, after electromagnetic heater heats cookware, the temperature of electromagnetic heater power tube
Degree can be just varied from, it is therefore desirable to confirm that electromagnetic heater starts timing after being heated to cookware.By calculating
The temperature change slope of the electromagnetic heater power tube at any two time point in the scheduled time is oblique according to this temperature change
Rate and the comparative result of default slope, it is determined whether adjust the power of the electromagnetic heater, in the given time, electromagnetism adds
The temperature of thermal is not stablized also, so in preset time, the temperature change slope of real-time monitoring power tube so that cookware
Heated with optimal power, it is possible to increase the service life of electromagnetic heater, ensures the reliability of electromagnetic heater.
In addition, the Poewr control method of electromagnetic heater according to the above embodiment of the present invention, can also have as follows
Additional technical characteristic：
In the above-mentioned technical solutions, it is preferable that when the change slope is more than the default slope, reduce the electromagnetism
The power of heating unit, otherwise, keeps the current power of the electromagnetic heater.
In the technical scheme, specifically, after being heated such as user using electromagnetic heater to cookware, electricity is worked as
When the power tube temperature change slope of magnetic heating unit is more than default slope, illustrate the power at this time needed for matching used cookware
It is relatively low, so the power of electromagnetic heater is reduced, conversely, the power needed for matching used cookware adds explanation with electromagnetism at this time
The output power matching of thermal is good, it is possible to keeps the current power of electromagnetic heater.Comparison in this way
Adjust, cookware can be caused to be endowed optimal power heating, so as to improve the service life of electromagnetic heater, ensure that electromagnetism adds
The reliability of thermal.
In the above-mentioned technical solutions, it is preferable that the power for reducing the electromagnetic heater is by reducing the electromagnetism
The power gear of heating unit is realized.
, can be by directly dropping when in the technical scheme, specifically, if desired for the power for reducing electromagnetic heater
The power gear of low electromagnetic heater, mode in this way, can easily adjust the output power of electromagnetic heater.
In the above-mentioned technical solutions, it is preferable that when detecting that cookware is replaced, restart timing.
In the technical scheme, specifically, if user is when using electromagnetic heater, it will usually match difference
Cookware, when user needs replacing cookware, timing can be restarted.In this way, when detecting that cookware is replaced, by again
Start timing to restart to be calculated.So that different cookwares is endowed different performance numbers, and then make different
Cookware can be heated with optimal power, improve the service life of electromagnetic heater, ensure the reliability of electromagnetic heater, together
When improve usage experience of the user to electromagnetic heater.
In the above-mentioned technical solutions, it is preferable that when electromagnetic heater starts to heat cookware or in heating process
During middle replacement cookware, automatically by the power adjustment of the electromagnetic heater to predetermined power.
In the technical scheme, specifically, for example, when electromagnetic heater starts to heat a certain cookware, or
Person user is during electromagnetic heater heats a certain cookware, decreased electromagnetic heating within the predetermined time
The power of device is to match current a certain cookware, and when user updates cookware at this moment, it may appear that cookware after replacement with
The unmatched situation of electromagnetic heater through being lowered power, the i.e. too low situation of electromagnetic heater power, need at this time
Automatically by the power adjustment of the electromagnetic heater to predetermined power, prevent the underpower of electromagnetic heater and influence
To the heating effect of the cookware, usage experience of the user to electromagnetic heater is improved.
In the above-mentioned technical solutions, it is preferable that the first time point in described two time points is m seconds after beginning timing,
And second time point be △ t seconds after the first time point, wherein, 0s≤m≤5s, 10s≤△ t≤60s.
In the technical scheme, specifically, the first time point in two time points for start timing after m seconds, institute
Started with selection after timing m seconds, be to avoid the unstable feelings of temperature when electromagnetic heater is just started to work in several seconds
Condition.Second time point was △ t seconds after first time point, and interval range is provided with to first time point and the second time point, its
The value range of middle 0s≤m≤5s, 10s≤△ t≤60s, △ t are the power tube temperature change most active periods, at this
Beyond period, when just beginning to warm up, temperature is not sufficiently stable, and after a period of time has passed, temperature change is highly stable.
By the value of these times, can the quick immediately temperature change slope of monitoring power tube, ensure cookware as early as possible with optimal
Power heats, and improves the service life of electromagnetic heater.
In the above-mentioned technical solutions, it is preferable that the calculation of the change slope K is that k=△ T/ △ t, wherein △ T are
The absolute value of the temperature of first time point and the temperature difference at the second time point.
In the technical scheme, specifically, change slope K can be calculated exactly, easy to change slope K with presetting
The comparison of slope.
According to an embodiment of the invention, it is proposed that a kind of power control device of electromagnetic heater, including：Temperature survey
Unit, for after detecting cookware is heated, starting timing, in the given time, measures the electromagnetic heating dress
The temperature for the power tube put；Computing unit, for calculating any two time point of the temperature within the scheduled time
Change slope；And processing unit, for by the change slope of the temperature compared with default slope, and according to comparing
As a result determine whether to adjust the power of the electromagnetic heater.
In the technical scheme, after electromagnetic heater heats cookware, the temperature of electromagnetic heater power tube
Degree can be just varied from, it is therefore desirable to confirm that electromagnetic heater starts timing after being heated to cookware.By calculating
The temperature change slope of the electromagnetic heater power tube at any two time point in the scheduled time is oblique according to this temperature change
Rate and the comparative result of default slope, it is determined whether adjust the power of the electromagnetic heater, in the given time, electromagnetism adds
The temperature of thermal is not stablized also, so in preset time, the temperature change slope of real-time monitoring power tube so that cookware
Heated with optimal power, it is possible to increase the service life of electromagnetic heater, ensures the reliability of electromagnetic heater.
In addition, the power control device of electromagnetic heater according to the above embodiment of the present invention, can also have as follows
Additional technical characteristic：
In the above-mentioned technical solutions, it is preferable that the processing unit is used for when the change slope is default oblique more than described
During rate, the power of the electromagnetic heater is reduced, otherwise, keeps the current power of the electromagnetic heater.
In the technical scheme, specifically, after being heated such as user using electromagnetic heater to cookware, electricity is worked as
When the power tube temperature change slope of magnetic heating unit is more than default slope, illustrate the power at this time needed for matching used cookware
It is relatively low, so the power of electromagnetic heater is reduced, conversely, the power needed for matching used cookware adds explanation with electromagnetism at this time
The output power matching of thermal is good, it is possible to keeps the current power of electromagnetic heater.Comparison in this way
Adjust, cookware can be caused to be endowed optimal power heating, so as to improve the service life of electromagnetic heater, ensure that electromagnetism adds
The reliability of thermal.
In the above-mentioned technical solutions, it is preferable that the relatively determination unit is by reducing the work(of the electromagnetic heater
Rate gear reduces the power of the electromagnetic heater.
, can be by directly dropping when in the technical scheme, specifically, if desired for the power for reducing electromagnetic heater
The power gear of low electromagnetic heater, mode in this way, can easily adjust the output power of electromagnetic heater.
In the above-mentioned technical solutions, it is preferable that the temperature measurement unit is additionally operable to：When detecting that cookware is replaced,
Restart timing.
In the technical scheme, specifically, if user is when using electromagnetic heater, it will usually match difference
Cookware, when user needs replacing cookware, timing can be restarted.In this way, when detecting that cookware is replaced, by again
Start timing to restart to be calculated.So that different cookwares is endowed different performance numbers, and then make different
Cookware can be heated with optimal power, improve the service life of electromagnetic heater, ensure the reliability of electromagnetic heater, together
When improve usage experience of the user to electromagnetic heater.
In the above-mentioned technical solutions, it is preferable that the processing unit is additionally operable to：When electromagnetic heater start to cookware into
When row heats or cookware is replaced in heating process, automatically by the power adjustment of the electromagnetic heater to predetermined power.
In the technical scheme, specifically, for example, when electromagnetic heater starts to heat a certain cookware, or
Person user is during electromagnetic heater heats a certain cookware, decreased electromagnetic heating within the predetermined time
The power of device matches currently used cookware, and when user updates cookware at this moment, it may appear that cookware and electricity after replacement
The unmatched situation of output power of magnetic heating unit, automatically can arrive the power adjustment of the electromagnetic heater at this time
Predetermined power, restarts to adjust the matched process of power progress.
In the above-mentioned technical solutions, it is preferable that the first time point in described two time points is m seconds after beginning timing,
And second time point be △ t seconds after the first time point, wherein, 0s≤m≤5s, 10s≤△ t≤60s.
In the technical scheme, specifically, the first time point in two time points for start timing after m seconds, institute
Started with selection after timing m seconds, be to avoid the unstable feelings of temperature when electromagnetic heater is just started to work in several seconds
Condition.Second time point was △ t seconds after first time point, and interval range is provided with to first time point and the second time point, its
The value range of middle 0s≤m≤5s, 10s≤△ t≤60s, △ t are the power tube temperature change most active periods, at this
Beyond period, when just beginning to warm up, temperature is not sufficiently stable, and after a period of time has passed, temperature change is highly stable.
By the value of these times, can the quick immediately temperature change slope of monitoring power tube, ensure cookware as early as possible with optimal
Power heats, and improves the service life of electromagnetic heater.
In the above-mentioned technical solutions, it is preferable that the calculation of the change slope K is that K=△ T/ △ t, wherein △ T are
The absolute value of the temperature of first time point and the temperature difference at the second time point.
In the technical scheme, specifically, change slope K can be calculated exactly, easy to change slope K with presetting
The comparison of slope.
According to an embodiment of the invention, it is proposed that a kind of electromagnetic oven, including such as any technical solution of the embodiment of the present invention
The power control device of the electromagnetic heater.
The additional aspect and advantage of the present invention will provide in following description section, will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 shows the flow signal of the Poewr control method of electromagnetic heater according to an embodiment of the invention
Figure；
Fig. 2 shows the specific of the Poewr control method for realizing electromagnetic heater according to still another embodiment of the invention
Flow diagram；
Fig. 3 shows the specific of the Poewr control method for realizing electromagnetic heater according to still another embodiment of the invention
Flow diagram；
Fig. 4 shows the schematic block of the power control device of electromagnetic heater according to an embodiment of the invention
Figure；
Fig. 5 shows the electromagnetic oven according to an embodiment of the invention with power control device.
Embodiment
It is to better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real
Mode is applied the present invention is further described in detail.It should be noted that in the case where there is no conflict, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be implemented using other different from other modes described here, therefore, protection scope of the present invention is not limited to following public affairs
The limitation for the specific embodiment opened.
Fig. 1 shows the schematic flow diagram of the Poewr control method of electromagnetic heater according to an embodiment of the invention.
A kind of as shown in Figure 1, embodiment according to the first aspect of the invention, there is provided the power control of electromagnetic heater
Method processed, including：Step 102, after detecting cookware is heated, timing is started, in the given time, described in measurement
The temperature of the power tube of electromagnetic heater；Step 104, any two time of the temperature within the scheduled time is calculated
Change slope on point；And step 106, by the change slope of the temperature compared with default slope, and according to comparing
As a result determine whether to adjust the power of the electromagnetic heater.
In this embodiment, after electromagnetic heater heats cookware, the temperature of electromagnetic heater power tube
It can just be varied from, it is therefore desirable to confirm that electromagnetic heater starts timing after being heated to cookware.By calculating pre-
The temperature change slope of the electromagnetic heater power tube at any two time point in fixing time, according to this temperature change slope
With the comparative result of default slope, it is determined whether adjust the power of the electromagnetic heater, in the given time, electromagnetic heating
The temperature of device is not stablized also, so in preset time, the temperature change slope of real-time monitoring power tube so that cookware with
Optimal power heats, it is possible to increase the service life of electromagnetic heater, ensures the reliability of electromagnetic heater.
In one embodiment of the invention, it is preferable that step 106 specifically includes：Described in being more than when the change slope
During default slope, the power of the electromagnetic heater is reduced, otherwise, keeps the current power of the electromagnetic heater.
In this embodiment, specifically, after being heated such as user using electromagnetic heater to cookware, electromagnetism is worked as
When the power tube temperature change slope of heating unit is more than default slope, illustrate that the power at this time needed for matching used cookware is inclined
It is low, so the power of electromagnetic heater is reduced, conversely, illustrating the power and electromagnetic heating needed for matching used cookware at this time
The output power matching of device is good, it is possible to keeps the current power of electromagnetic heater.Comparison tune in this way
Section, can cause cookware to be endowed optimal power heating, so as to improve the service life of electromagnetic heater, ensure electromagnetic heating
The reliability of device.
In one embodiment of the invention, it is preferable that the power for reducing the electromagnetic heater is by reducing
The power gear of electromagnetic heater is stated to realize.
, can be by directly reducing when in this embodiment, specifically, if desired for the power for reducing electromagnetic heater
The power gear of electromagnetic heater, mode in this way, can easily adjust the output power of electromagnetic heater.Example
Such as, the power gear of electromagnetic heater can be divided into 1000W, 1500W and 2000W totally 3 gears, when electromagnetic heater exists
When being run on the gear of 2000W, by judging, it is necessary to reduce power, electromagnetic heater can reduce by 1 gear automatically, reduce
Continue to run with to the gear of 1500W, then judged again, if it is judged that still to need to reduce power gear, that
Electromagnetic heater continues to run with after being reduced to the gear of 1000W, keeps existing power to continue to heat.
In one embodiment of the invention, it is preferable that when detecting that cookware is replaced, restart timing.
In this embodiment, specifically, if user is when using electromagnetic heater, it will usually match different
Cookware, when user needs replacing cookware, can restart timing.In this way, when detecting that cookware is replaced, by opening again
Beginning timing restarts to be calculated.So that different cookwares is endowed different performance numbers, and then make different pots
Tool can be heated with optimal power, improved the service life of electromagnetic heater, ensured the reliability of electromagnetic heater, at the same time
Improve usage experience of the user to electromagnetic heater.For example, user is during culinary art, first using slaughterhouse Baoshang, when
After the completion of, when replacing frying pan cooking, electromagnetic heater detects that cookware is changed into frying pan from slaughterhouse, starts reclocking, again
Start the process of mesh power.
In one embodiment of the invention, it is preferable that when electromagnetic heater starts to heat cookware or is adding
When cookware is replaced in thermal process, automatically by the power adjustment of electromagnetic heater to predetermined power.
In one embodiment of the invention, it is preferable that the first time point in described two time points is beginning timing
M seconds afterwards, and the second time point was △ t seconds after the first time point, wherein, 0s≤m≤5s, 10s≤△ t≤60s.
In this embodiment, specifically, the first time point in two time points is m seconds after beginning timing why
Selection starts after timing m seconds, is to avoid the unstable situation of temperature when electromagnetic heater is just started to work in several seconds.
Second time point was △ t seconds after first time point, and interval range, wherein 0s are provided with to first time point and the second time point
The value range of≤m≤5s, 10s≤△ t≤60s, △ t are the power tube temperature change most active periods, in this time
Beyond section, when just beginning to warm up, temperature is not sufficiently stable, and after a period of time has passed, temperature change is highly stable.Pass through
The value of these times, can the quick immediately temperature change slope of monitoring power tube, ensure cookware as early as possible with optimal power
Heating, improves the service life of electromagnetic heater.In specific embodiment, when user uses electromagnetic heater, starting
3s after timing, power tube temperature is stable at this time, and when starting to detect and being recorded in 3s, the temperature of power tube is 22.3 DEG C,
In 40s, power tube is 23.5 DEG C, passes through recorded time and temperature and calculates change slope, and will change slope with
Predetermined slope compares, and the power of electromagnetic heater is adjusted according to comparative result.
In one embodiment of the invention, it is preferable that the calculation for changing slope K is K=△ T/ △ t, wherein △ T
For the temperature of first time point and the absolute value of the temperature difference at the second time point.
In this embodiment, specifically, change slope K can be accurately calculated, it is oblique with presetting easy to change slope K
The comparison of rate.
Fig. 2 shows the idiographic flow signal of the Poewr control method of electromagnetic heater according to an embodiment of the invention
Figure.
As shown in Fig. 2, the idiographic flow bag of the Poewr control method of electromagnetic heater according to an embodiment of the invention
Include：
Step 202, after by confirming that calutron heats cookware, timing is started, such as timing time is 300
Second.
Step 214, judge whether to reach the scheduled time, if do not reached, proceed to step 204, otherwise terminate this
Flow.
Step 204, in first time point t0Detect the temperature T of calutron power tube0, first time point t0To start to count
When after any instant after m seconds, wherein, 0s≤m≤5s.
Step 206, in the second time point t1Detect the temperature T of calutron power tube1, the second time point was described first
△ t seconds after time point, wherein, 10s≤△ t≤60s.
Step 208, temperature change slope K=△ T/ △ t=(T are calculated1-T0)/(t1-t0), wherein △ T are first
The absolute value of the temperature at time point and the temperature difference at the second time point, by temperature change slope K and default slope k0It is compared.
Step 210, when temperature change slope k is more than default slope k0When, reduce electromagnetic heater power, return to step
214, continue to determine whether to reach the scheduled time, conversely, proceeding to step 212.
Step 212, the current power of electromagnetic heater is kept.
Step 212, back to step 214, repeat the above steps, until timing time arrives.
Fig. 3 shows the another idiographic flow of the Poewr control method of electromagnetic heater according to an embodiment of the invention
Schematic diagram.
As shown in figure 3, the another specific stream of the Poewr control method of electromagnetic heater according to an embodiment of the invention
Journey includes：
Step 302, after by confirming that calutron heats cookware, timing is started, such as timing time is
300s。
Step 318, judge whether to reach scheduled time 300s, such as not up to, then proceed to step 304, otherwise terminate this
Flow.
Step 304, confirm whether cookware is replaced, as confirmed to be replaced, then proceed to step 306, otherwise proceed to step
Rapid 308.For example, user is during culinary art, first using slaughterhouse Baoshang, after the completion of, when replacing frying pan cooking, electromagnetic heating
Device detects that cookware is changed into frying pan from slaughterhouse, starts reclocking.
Step 306, automatically by electromagnetic heater power adjustment to predetermined power, for example, user first uses electromagnetic heating
Device carries out Baoshang, and during Baoshang, electromagnetic heater is reduced to optimal heating power by judging, most preferably
Heating power is 700W, and Baoshang is completed, and replaces frying pan and carries out cooking, heating power is adjusted to by electromagnetic heater automatically
2000W (predetermined power of frying pan),
Step 308, in first time point t0Detect the temperature T of calutron power tube0, first time point t0To start to count
When after any instant after m seconds, wherein, 0s≤m≤5s.
Step 310, in the second time point t1Detect the temperature T of calutron power tube1, the second time point was described first
△ t seconds after time point, wherein, 10s≤△ t≤60s.
Step 312, temperature change slope k=△ T/ △ t=(T are calculated1-T0)/(t1-t0), wherein △ T are first
The absolute value of the temperature at time point and the temperature difference at the second time point, by temperature change slope k and default slope k0It is compared.
Step 314, when temperature change slope k is more than default slope k0When, proceed to step 316, otherwise, keep electromagnetism to add
The current power of thermal, and return to step 318.
Step 316, electromagnetic heater power is reduced, back to step 318, is repeated the above steps, until timing time
Arrive.
In this embodiment, specifically, when electromagnetic heater starts to heat a certain cookware, or user exists
During electromagnetic heater heats a certain cookware, the work(of adjusted electromagnetic heater within the predetermined time
Rate can restart timing to match currently used cookware, and when user updates cookware at this moment, in this way, when detecting pot
During the replacement of tool, restart to be calculated by restarting timing, and occur that the cookware after replacing adds with electromagnetism
The unmatched situation of the existing output power of thermal, at this time can be automatically by the power adjustment of the electromagnetic heater
To predetermined power, restart the adjusting process of the output power of electromagnetic heater, improve user to electromagnetic heater
Usage experience so that different cookwares is invested different performance numbers, and then make different cookwares can be with optimal work(
Rate heats, and improves the service life of electromagnetic heater, ensures the reliability of electromagnetic heater.
Fig. 4 shows the schematic block diagram of the power control device of electromagnetic heater according to an embodiment of the invention.
A kind of as shown in figure 4, embodiment according to a second aspect of the present invention, it is proposed that Power Control of electromagnetic heater
Device 400, including：
Temperature measurement unit 402, for after detecting cookware is heated, starting timing, in the given time,
Measure the temperature of the power tube of the electromagnetic heater；
Computing unit 404, for calculating change of the temperature on any two time point within the scheduled time
Slope；And
Processing unit 406, for by the change slope of the temperature compared with default slope, and according to comparative result
Determine whether to adjust the power of the electromagnetic heater.
In this embodiment, after electromagnetic heater heats cookware, the temperature of electromagnetic heater power tube
It can just be varied from, it is therefore desirable to confirm that electromagnetic heater starts timing after being heated to cookware.By calculating pre-
The temperature change slope of the electromagnetic heater power tube at any two time point in fixing time, according to this temperature change slope
With the comparative result of default slope, it is determined whether adjust the power of the electromagnetic heater, in the given time, electromagnetic heating
The temperature of device is not stablized also, so in preset time, the temperature change slope of real-time monitoring power tube so that cookware with
Optimal power heats, it is possible to increase the service life of electromagnetic heater, ensures the reliability of electromagnetic heater.
In one embodiment of the invention, it is preferable that the processing unit 406 is used for when the change slope is more than institute
When stating default slope, the power of the electromagnetic heater is reduced, otherwise, keeps the current power of the electromagnetic heater.
In this embodiment, specifically, after being heated such as user using electromagnetic heater to cookware, electromagnetism is worked as
When the power tube temperature change slope of heating unit is more than default slope, illustrate that the power at this time needed for matching used cookware is inclined
It is low, so the power of electromagnetic heater is reduced, conversely, illustrating the power and electromagnetic heating needed for matching used cookware at this time
The output power matching of device is good, it is possible to keeps the current power of electromagnetic heater.Comparison tune in this way
Section, can cause cookware to be endowed optimal power heating, so as to improve the service life of electromagnetic heater, ensure electromagnetic heating
The reliability of device.
In one embodiment of the invention, it is preferable that the relatively determination unit 4060 is added by reducing the electromagnetism
The power gear of thermal reduces the power of the electromagnetic heater.
, can be by directly reducing when in this embodiment, specifically, if desired for the power for reducing electromagnetic heater
The power gear of electromagnetic heater, mode in this way, can easily adjust the output power of electromagnetic heater.Example
Such as, the power gear of electromagnetic heater is divided into 500W, 700W, 1000W, 1500W and 2000W totally 5 gears, works as electromagnetic heating
For device when being run on the gear of 2000W, by judging, it is necessary to reduce power, electromagnetic heater can reduce by 1 shelves automatically
Position, is reduced on the gear of 1500W and continues to run with, then judged again, if it is judged that being still to need to reduce power
Gear, then electromagnetic heater continues to run with after being reduced to the gear of 1000W, and is judged again, until judging knot
Fruit is optimum Working, keeps existing power to continue to heat.
In one embodiment of the invention, it is preferable that the temperature measurement unit is additionally operable to：Detecting cookware by more
When changing, restart timing.
In this embodiment, specifically, if user is when using electromagnetic heater, it will usually match different
Cookware, when user needs replacing cookware, can restart timing.In this way, when detecting that cookware is replaced, by opening again
Beginning timing restarts to be calculated.So that different cookwares is endowed different performance numbers, and then make different pots
Tool can be heated with optimal power, improved the service life of electromagnetic heater, ensured the reliability of electromagnetic heater, at the same time
Improve usage experience of the user to electromagnetic heater
In one embodiment of the invention, it is preferable that the processing unit is additionally operable to：When electromagnetic heater starts pair
Cookware heated or in heating process replace cookware when, automatically by the power adjustment of the electromagnetic heater to preset
Power.
In this embodiment, specifically, when electromagnetic heater starts to heat a certain cookware, or user exists
During electromagnetic heater heats a certain cookware, the work(of decreased electromagnetic heater within the predetermined time
Rate is to match current a certain cookware, and when user updates cookware at this moment, it may appear that the cookware after replacement is with having been decreased by
The unmatched situation of electromagnetic heater of power, the i.e. too low situation of electromagnetic heater power, need institute automatically at this time
The power adjustment for the electromagnetic heater stated prevents the underpower of electromagnetic heater and influences to the pot to predetermined power
The heating effect of tool, improves usage experience of the user to electromagnetic heater.In specific embodiment, user is first added using electromagnetism
Thermal carries out Baoshang, and during Baoshang, electromagnetic heater is reduced to optimal heating power by judging, most
Good heating power is 700W, and Baoshang is completed, and replaces frying pan and carries out cooking, heating power is adjusted to by electromagnetic heater automatically
2000W (predetermined power of frying pan), then again by judging, until electromagnetic heater reaches optimum Working again.
In one embodiment of the invention, it is preferable that the first time point in described two time points is beginning timing
M seconds afterwards, and the second time point was △ t seconds after the first time point, wherein, 0s≤m≤5s, 10s≤△ t≤60s.
In this embodiment, specifically, the first time point in two time points is m seconds after beginning timing why
Selection starts after timing m seconds, is to avoid the unstable situation of temperature when electromagnetic heater is just started to work in several seconds.
Second time point was △ t seconds after first time point, and interval range, wherein 0s are provided with to first time point and the second time point
The value range of≤m≤5s, 10s≤△ t≤60s, △ t are the power tube temperature change most active periods, in this time
Beyond section, when just beginning to warm up, temperature is not sufficiently stable, and after a period of time has passed, temperature change is highly stable.Pass through
The value of these times, can the quick immediately temperature change slope of monitoring power tube, ensure cookware as early as possible with optimal power
Heating, improves the service life of electromagnetic heater.In specific embodiment, when user uses electromagnetic heater, starting
3s after timing, power tube temperature is stable at this time, and when starting to detect and being recorded in 3s, the temperature of power tube is 22.3 DEG C,
In 40s, power tube is 23.5 DEG C, passes through recorded time and temperature and calculates change slope, and will change slope with
Predetermined slope compares, and the power of electromagnetic heater is adjusted according to comparative result.
In one embodiment of the invention, it is preferable that the calculation of the change slope k is k=△ T/ △ t, its
Middle △ T are the temperature of first time point and the absolute value of the temperature difference at the second time point.
In this embodiment, specifically, change slope K can be accurately calculated, it is oblique with presetting easy to change slope k
The comparison of rate.
Fig. 5 shows the electromagnetic oven according to an embodiment of the invention with power control device.
As shown in figure 5, according to an embodiment of the invention, it is proposed that a kind of electromagnetic oven 500, including such as any of the above-described technical side
The power control device 502 of electromagnetic heater described in case.
Technical scheme is described in detail above in association with attached drawing, the temperature change for being capable of monitoring power tube in real time is oblique
Rate so that cookware is heated with optimal power in the given time, improves the service life of electromagnetic heater, ensures electromagnetic heating
The reliability of device, improves usage experience of the user to electromagnetic heater.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (15)
- A kind of 1. Poewr control method of electromagnetic heater, it is characterised in that including：After detecting cookware is heated, start timing, in the given time, measure the work(of the electromagnetic heater The temperature of rate pipe；Calculate change slope of the temperature on any two time point within the scheduled time；AndBy the change slope of the temperature compared with default slope, and determined whether according to comparative result to adjust the electromagnetism The power of heating unit.
- 2. Poewr control method according to claim 1, it is characterised in thatThe change slope by the temperature is compared with default slope, and according to comparative result determines whether adjusting The power of electromagnetic heater, specifically includes：When the change slope is more than the default slope, the power of the electromagnetic heater is reduced, otherwise, described in holding The current power of electromagnetic heater.
- 3. Poewr control method according to claim 2, the power for reducing the electromagnetic heater is to pass through drop The power gear of the low electromagnetic heater is realized.
- 4. Poewr control method according to any one of claim 1-3, it is characterised in that further include：Detecting pot When tool is replaced, restart timing.
- 5. Poewr control method according to claim 4, it is characterised in that when electromagnetic heater starts to carry out cookware When heating or cookware is replaced in heating process, automatically by the power adjustment of the electromagnetic heater to predetermined power.
- 6. Poewr control method according to claim 4 or 5, it is characterised in that in described two time points first when Between point to start after timing m second, and the second time point was △ after first time point t seconds, wherein, 0≤m≤5,10≤ △t≤60。
- 7. the control method of electromagnetic heater according to claim 6, it is characterised in that the meter of the change slope K Calculation mode is K=△ T/ △ t, and wherein △ T are the temperature of first time point and the absolute value of the temperature difference at the second time point.
- A kind of 8. power control device of electromagnetic heater, it is characterised in that including：Temperature measurement unit, for after detecting cookware is heated, starting timing, in the given time, measures institute State the temperature of the power tube of electromagnetic heater；Computing unit, for calculating change slope of the temperature on any two time point within the scheduled time；With AndProcessing unit, for by the change slope of the temperature compared with default slope, and determined according to comparative result be The no power for adjusting the electromagnetic heater.
- 9. power control device according to claim 8, it is characterised in that the processing unit is used for when the change is oblique When rate is more than the default slope, the power of the electromagnetic heater is reduced, otherwise, is kept for working as the electromagnetic heater Preceding power.
- 10. power control device according to claim 9, it is characterised in that the relatively determination unit is by reducing The power gear of electromagnetic heater is stated to reduce the power of the electromagnetic heater.
- 11. according to the power control device any one of claim 8-10, it is characterised in thatThe temperature measurement unit is additionally operable to：When detecting that cookware is replaced, restart timing.
- 12. power control device according to claim 11, it is characterised in thatThe processing unit is additionally operable to：When electromagnetic heater starts to heat cookware or replace in heating process cookware When, automatically by the power adjustment of the electromagnetic heater to predetermined power.
- 13. the power control device according to claim 11 or 12, it is characterised in that first in described two time points Time point is starts after timing m second, and the second time point was △ after first time point t seconds, wherein, 0≤m≤5,10 ≤△t≤60。
- 14. power control device according to claim 13, it is characterised in that the calculation of the change slope K is k =△ T/ △ t, wherein △ T are the temperature of first time point and the absolute value of the temperature difference at the second time point.
- 15. a kind of electromagnetic oven, it is characterised in that including the electromagnetic heater as any one of claim 8 to 14 Power control device.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109121240A (en) * | 2018-09-30 | 2019-01-01 | 珠海格力电器股份有限公司 | Cookware self-adaptive electromagnetic heating system, electromagnetic heater, method for heating and controlling |
| CN109730526A (en) * | 2018-11-27 | 2019-05-10 | 华帝股份有限公司 | Constant temperature control method of electric steam box |
| CN110275559A (en) * | 2019-07-10 | 2019-09-24 | 深圳市中远通电源技术开发有限公司 | A kind of method and device of heating intelligent control |
| TWI827146B (en) * | 2022-07-18 | 2023-12-21 | 台灣松下電器股份有限公司 | Induction cooker with empty burning status detection function |
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| CN102821501A (en) * | 2012-08-20 | 2012-12-12 | 九阳股份有限公司 | Induction cooker control circuit suitable for cookers of different materials and power control method |
| CN104269823A (en) * | 2014-10-16 | 2015-01-07 | 重庆长安汽车股份有限公司 | Over-temperature protection method and device |
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| CN102821501A (en) * | 2012-08-20 | 2012-12-12 | 九阳股份有限公司 | Induction cooker control circuit suitable for cookers of different materials and power control method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109121240A (en) * | 2018-09-30 | 2019-01-01 | 珠海格力电器股份有限公司 | Cookware self-adaptive electromagnetic heating system, electromagnetic heater, method for heating and controlling |
| CN109730526A (en) * | 2018-11-27 | 2019-05-10 | 华帝股份有限公司 | Constant temperature control method of electric steam box |
| CN110275559A (en) * | 2019-07-10 | 2019-09-24 | 深圳市中远通电源技术开发有限公司 | A kind of method and device of heating intelligent control |
| TWI827146B (en) * | 2022-07-18 | 2023-12-21 | 台灣松下電器股份有限公司 | Induction cooker with empty burning status detection function |
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| CN107949087B (en) | 2021-04-23 |
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