CN105357788A - Heating method and heating device - Google Patents
Heating method and heating device Download PDFInfo
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- CN105357788A CN105357788A CN201510847131.8A CN201510847131A CN105357788A CN 105357788 A CN105357788 A CN 105357788A CN 201510847131 A CN201510847131 A CN 201510847131A CN 105357788 A CN105357788 A CN 105357788A
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Abstract
The invention relates to the field of household electrical appliances, and discloses a heating method and a heating device. The heating method comprises the steps: heating a to-be-heated object; if hot points cover a preset percentage of the area occupied by the to-be-heated object, determining the frequency and the phase of a current heating source as a heating frequency and a heating phase, wherein the temperature difference among the hot points is within a preset range; and controlling the heating source to heat the to-be-heated object at the heating frequency and the heating phase so that a uniform heating purpose is achieved. In this way, the performance of the heating device is improved, and the user experience is improved.
Description
Technical field
The present invention relates to household appliance technical field, particularly, relate to a kind of heating means and heater.
Background technology
Along with greatly developing of science and technology, current mode of heating also gets more and more, such as microwave heating, optical wave heating etc.But heating uniformity is the characteristic very paid close attention in heating industry always, in especially microwave heating industry, from occurring that microwave heating till now, the problem of heating uniformity is a puzzlement engineer's difficult problem always.
Common situation is, when you heat the same food (such as cake), needs, by carrying out corresponding auxiliary movement by various auxiliary member (such as stirring piece, rotating disk), only to realize homogeneous heating possibly to make it.But change another kind of food (such as beef) under same state, due to the characteristic of food itself, be cannot copy before heating process to realize identical heating effect.
Summary of the invention
The object of this invention is to provide a kind of heating means and heater, these heating means can realize homogeneous heating for different materials to be heated.
To achieve these goals, the invention provides a kind of heating means, described heating means comprise: heat material to be heated; When focus covers the predetermined percentage in region shared by described material to be heated, the frequency of now heating source and phase place are defined as heating frequency and firing phase respectively, and the temperature difference between wherein said focus is in preset range; And control described heating source and heat with described heating frequency and described firing phase.
Preferably, determine that described heating frequency and described firing phase comprise: scanning covers the temperature of the focus in region shared by described material to be heated and determines the area of the focus covering region shared by described material to be heated; And change the frequency of heating source and phase place, until the difference between the temperature scanned is in described preset range and the area of described focus reaches the predetermined percentage of described material to be heated area occupied.
Preferably, described heating means also comprise following at least one: during determining described heating frequency and described firing phase, control described heating source and heat with default heating power; And after determining described heating frequency and described firing phase, control the heating power of described heating source according to the kind of described material to be heated and required degree of heat.
Preferably, described heating source is produced by same microwave signal generation module.
Preferably, when described material to be heated is multiple material to be heated, described heating means also comprise following in one: heated it by the focus covering described multiple material to be heated, a kind of material to be heated reaches the focus heating stopping covering this kind of material to be heated after institute's calorific requirement wherein simultaneously; For often kind of material to be heated, determine described heating frequency and described firing phase, heat according to the heating power needed for described heating frequency, described firing phase and this kind of material to be heated; And according to the focus area coverage of the high material to be heated of the institute's calorific requirement focus area coverage higher than the low material to be heated of institute's calorific requirement, determine described heating frequency and described firing phase, heat according to described heating frequency, described firing phase.
Preferably, described heating means also comprise: after the state of described material to be heated changes, and redefine heating frequency and firing phase.
Correspondingly, the present invention also provides a kind of heater, and described heater comprises: at least two heating sources; Controller, for: control described heating source and material to be heated is heated; When focus covers the predetermined percentage in region shared by described material to be heated, the frequency of now heating source and phase place are defined as heating frequency and firing phase respectively, and the temperature difference between wherein said focus is in preset range; And control described heating source and heat with described heating frequency and described firing phase.
Preferably, described heater also comprises: temperature scanning device, for scanning the temperature of the focus covering region shared by described material to be heated; And phase shifter, for changing the phase place of described heating source.
Preferably, described controller also performs following at least one: during determining described heating frequency and described firing phase, controls described heating source and heats with default heating frequency; And after determining described heating frequency and described firing phase, control the heating frequency of described heating source according to the kind of described material to be heated and required degree of heat.
Preferably, described heating source is produced by same microwave signal generation module.
Preferably, when described material to be heated is multiple material to be heated, described controller also perform following in one: heated it by the focus covering described multiple material to be heated, a kind of material to be heated reaches the focus heating stopping covering this kind of material to be heated after institute's calorific requirement wherein simultaneously; For often kind of material to be heated, determine described heating frequency and described firing phase, according to described heating frequency, described firing phase and the heating power needed for this kind of material to be heated heat; And according to the focus area coverage of the high material to be heated of the institute's calorific requirement focus area coverage higher than the low material to be heated of institute's calorific requirement, determine described heating frequency and described firing phase, heat according to described heating frequency, described firing phase.
Preferably, described heater also comprises for the feed-in mouth of described heating source to heater feed in energy analysis, and the isolation wherein between feed-in mouth is less than-15dB.
Preferably, described controller also for: after the state of described material to be heated changes, redefine heating frequency and firing phase.
Pass through technique scheme, frequency and the phase place of heating source when focus being covered the predetermined percentage in region shared by described material to be heated are defined as heating frequency and firing phase, now, temperature difference between focus is in preset range, determined heating frequency and firing phase is utilized to heat to control heating source material to be heated, to realize the object of homogeneous heating, thus the performance of heater can be improved and improve the experience sense of user.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the structured flowchart according to heater provided by the invention;
Fig. 2 is the cake heating schematic diagram according to one embodiment of the present invention;
Fig. 3 be for cake heating heating source different frequency and phase place time focus distribution schematic diagram;
Fig. 4 is the distribution schematic diagram for cake heating focus under the heating frequency and firing phase of the heating source determined;
Fig. 5 is the heating schematic diagram of frozen bread according to another execution mode of the present invention and milk; And
Fig. 6 is the flow chart according to heating means provided by the invention; And
Fig. 7 is the flow chart of the heating means according to one embodiment of the present invention.
Description of reference numerals
11 heating source 12 controllers
13 feed-in mouth 14 heating chambers
21 frozen bread 22 milk
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Fig. 1 is the structured flowchart according to heater provided by the invention.As shown in Figure 1, heater provided by the invention can comprise: at least two heating sources 11; Controller 12, for: control described heating source and material to be heated is heated; When focus covers the predetermined percentage in region shared by described material to be heated, the frequency of now heating source and phase place are defined as heating frequency and firing phase respectively, and the temperature difference between wherein said focus is in preset range; And control described heating source and heat with described heating frequency and described firing phase.
Each frequency, phase place form corresponding field distribution in heating chamber, each field distribution can form a series of region in heating chamber, and some region energies are low, and some regions even do not have energy, wherein, the region (energy is higher than particular value) that energy is high is called " focus ".The present invention is based on focus to control the heating frequency of heating source and firing phase, make in heating process, heat according to the heating frequency and firing phase class forming determined focus, so guarantee heating uniformity.
Described heater 11 can also comprise temperature scanning device, for scanning the temperature of the focus covering region shared by described material to be heated.Described temperature scanning device can be multipoint temperature sensor or thermal imaging apparatus, wherein, thermal imaging apparatus can detect easily and record the temperature in a certain region, multipoint temperature sensor, then need to add certain algorithm, making collected data according to the point of physical location record temperature close, is existing device about thermal imaging apparatus and multipoint temperature sensor, for succinct object, repeat no more in this.In addition, in order to realize the phase change of heating source, described heater 11 can also comprise phase shifter.
Wherein, determine that described heating frequency and described firing phase can comprise: such as utilize thermal imaging apparatus scan the temperature of the focus covering region shared by described material to be heated and determine the area of the focus covering region shared by described material to be heated; And change the frequency of heating source and phase place (such as passing through phase shifter), until the difference between the temperature scanned is in described preset range and the area of described focus reaches the predetermined percentage of described material to be heated area occupied.
Under being operated in same frequency to make heating source, at least two heating sources 11 can be produced by same microwave signal generation module, and heating source 11 can be microwave source.
Heater 11 can also comprise for the feed-in mouth of described heating source to heater feed in energy analysis, and at least two feed-in mouths are arranged on the wall of heating chamber, and its quantity can be consistent with the quantity of heating source; Need between feed-in mouth to ensure good isolation, such as, when heater is semiconductor microwave firing equipment, the isolation between feed-in mouth can be less than-15dB.
When determining heating frequency and firing phase, due to object and do not lie in treat heating thing heat, therefore controller 12 can control described heating source and heats, with energy savings with lower default heating power (such as gross power is less than 100W); After determining described heating frequency and described firing phase, controller 12 can control the heating power of described heating source according to the kind of described material to be heated and required degree of heat, can be heated to make material to be heated with more suitable heating process.
Heater provided by the invention can also realize directed heating.When described material to be heated is multiple material to be heated, described controller 12 can perform following in one realize directed heating: heated it by the focus covering described multiple material to be heated, a kind of material to be heated stops the focus heating covering this kind of material to be heated after reaching institute's calorific requirement wherein simultaneously; For often kind of material to be heated, determine described heating frequency and described firing phase, according to described heating frequency, described firing phase and the heating power needed for this kind of material to be heated heat; And according to the focus area coverage of the high material to be heated of the institute's calorific requirement focus area coverage higher than the low material to be heated of institute's calorific requirement, determine described heating frequency and described firing phase, heat according to described heating frequency, described firing phase.
In addition, in the process (particularly long-time heating) of heating, the state (molecular composition) of material to be heated may change, now, determined heating frequency and firing phase will not be suitable for homogeneous heating before, need to redefine heating frequency and firing phase.
Below will describe the present invention in detail by embodiment, but the present invention is not restricted to this.
Fig. 2 is the cake heating schematic diagram according to one embodiment of the present invention.As shown in Figure 2, put into a dish cake in the heating chamber 14 of heater, this heater has 4 feed-in mouths, and corresponding four microwave sources of difference.After heating chamber put into by cake, first can control microwave source and start with small-power (gross power is less than 100W), then carry out hot spot scanning and analysis.In this course, need the frequency and the phase place that ceaselessly change microwave source, focus simultaneously in conjunction with cake changes, and determines to cover the focus combination of whole or most cake comprehensively, using frequency now and phase place as the heating frequency of microwave source and firing phase.
In heating frequency and firing phase deterministic process, the frequency screened and phase combination are as shown in Figure 3, as can be seen from Figure 3, each frequency different hotspot's distribution figure corresponding to phase combination, shows in Fig. 3 in six and combines (in fact can also have a lot of other compound mode).Once hotspot's distribution figure can be made to superpose the heating region of rear covering 80% (as shown in Figure 4, namely different hotspot's distributions is obtained by the combination of frequency in same time, phase place, 80% of overall area shared by cake can be accounted for) after the superposition of hot spot region, then stop scanning, using the frequency of now microwave source and phase place as heating frequency and firing phase.
Based on determined heating frequency and firing phase, HIGH-POWERED MICROWAVES is used to heat.Heating power is determined according to the microwave energy needed for cake, such as, cook cake and can select full power (being greater than 600W).Material to be heated for other kind can select corresponding heating power, and for other function, such as, thaws and the power being less than 400W can be adopted to heat.The design temperature adding material to be heated can be set, heating can be stopped when material to be heated reaches design temperature.
Fig. 5 is the heating schematic diagram of frozen bread according to another execution mode of the present invention and milk.Steamed bun 21 and milk 22 belong to common breakfast type, and the initial temperature of frozen bread 21 is generally below-5 DEG C, and cooking temp needs to reach more than 80 DEG C, and normal temperature milk 22 is generally about 20 DEG C, and cooking temp needs to reach 50 DEG C to 60 DEG C.Single from temperature, steamed bun 21 needs more energy; In addition, because steamed bun 21 water content is few, milk 22 water content is high, and the food that microwave easier heating aqueous amount is high, comprehensively known, in heating process, if needs complete the heating of frozen bread 21 and normal temperature milk 22 with the time, then to be supplied to the more energy of frozen bread 21, the energy that milk is less.Now, need to consider directed heating, to complete the heating to the two.
First above-mentioned hot spot scanning and analysis is adopted, unlike, in this embodiment, need to find out respectively and the common focus combination covering frozen bread 21 and milk 22, and record.
Then can realize the capacity volume variance of frozen bread 21 and milk 22 in the following ways: first adopt the focus jointly covering frozen bread 21 and milk 22 to combine and realize heating while the two, then adopt separately the focus covering frozen bread 21 to combine and heat; Adopt the focus combined heated covering frozen bread 21 or milk 22 respectively, adopt high-power carrying out to heat (as 500W) when focus major part covers frozen bread 21, adopt small-power to carry out heating (as 300W) when focus major part covers milk 22; Determine that the area coverage of the focus combination covering frozen bread 21 is 2 times of the area coverage of the focus combination covering milk 22, then adopt same power to heat.
Fig. 6 is the flow chart according to heating means provided by the invention.As shown in Figure 6, in step S60 place, material to be heated is heated; When step S61 be in focus cover the predetermined percentage in region shared by described material to be heated, the frequency of now heating source and phase place are defined as heating frequency and firing phase respectively, and the temperature difference between wherein said focus is in preset range; And in step S62 place, control described heating source and heat with described heating frequency and described firing phase.Control the heating frequency of heating source and firing phase based on focus, make in heating process, heat according to the heating frequency and firing phase class forming determined focus, so guarantee heating uniformity.
Describe heating means provided by the invention in detail below with reference to Fig. 7, but it should be noted that the present invention is not restricted to this.
As shown in Figure 7, in step 71 place, control described heating source to heat with default heating power (small-power), change the frequency of heating source and phase place, scanning covers the temperature of the focus in region shared by described material to be heated and determines the area of the focus covering region shared by described material to be heated; In step 72 place, the difference between the temperature scanned is in described preset range and the area of described focus reaches the predetermined percentage (such as 80%) of described material to be heated area occupied; If do not meet above-mentioned condition, then be back to step 71 place, if meet above-mentioned condition, then in step 73 place, control the heating power of described heating source according to the kind of described material to be heated and required degree of heat, and heat according to the heating frequency determined and firing phase; In step 74 place, judge whether described material to be heated reaches preset temperature; If reach preset temperature, then stop heating; If do not reach preset temperature, then go to step 73.
In addition, when described material to be heated is multiple material to be heated, described heating means also comprise following in one: heated it by the focus covering described multiple material to be heated, a kind of material to be heated reaches the focus heating stopping covering this kind of material to be heated after institute's calorific requirement wherein simultaneously; For often kind of material to be heated, determine described heating frequency and described firing phase, heat according to the heating power needed for described heating frequency, described firing phase and this kind of material to be heated; And according to the focus area coverage of the high material to be heated of the institute's calorific requirement focus area coverage higher than the low material to be heated of institute's calorific requirement, determine described heating frequency and described firing phase, heat according to described heating frequency, described firing phase.
And, after the state of described material to be heated changes, heating frequency and firing phase can be redefined.
Other detail of associated heater method and benefit identical with the above-mentioned details for heater and benefit, repeat no more in this.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned execution mode; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different execution mode of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (13)
1. heating means, is characterized in that, described heating means comprise:
Material to be heated is heated;
When focus covers the predetermined percentage in region shared by described material to be heated, the frequency of now heating source and phase place are defined as heating frequency and firing phase respectively, and the temperature difference between wherein said focus is in preset range; And
Control described heating source to heat with described heating frequency and described firing phase.
2. heating means according to claim 1, is characterized in that, determine that described heating frequency and described firing phase comprise:
Scanning covers the temperature of the focus in region shared by described material to be heated and determines the area of the focus covering region shared by described material to be heated; And
Change the frequency of heating source and phase place, until the difference between the temperature scanned is in described preset range and the area of described focus reaches the predetermined percentage of described material to be heated area occupied.
3. heating means according to claim 1, is characterized in that, described heating means also comprise following at least one:
During determining described heating frequency and described firing phase, control described heating source and heat with default heating power; And
After determining described heating frequency and described firing phase, control the heating power of described heating source according to the kind of described material to be heated and required degree of heat.
4. heating means according to claim 1, is characterized in that, described heating source is produced by same microwave signal generation module.
5. heating means according to claim 1, is characterized in that, when described material to be heated is multiple material to be heated, described heating means also comprise following in one:
Heated it by the focus covering described multiple material to be heated, a kind of material to be heated stops the focus heating covering this kind of material to be heated after reaching institute's calorific requirement wherein simultaneously;
For often kind of material to be heated, determine described heating frequency and described firing phase, heat according to the heating power needed for described heating frequency, described firing phase and this kind of material to be heated; And
According to the focus area coverage of the high material to be heated of the institute's calorific requirement focus area coverage higher than the low material to be heated of institute's calorific requirement, determine described heating frequency and described firing phase, heat according to described heating frequency, described firing phase.
6. heating means according to any one of claim 1 to 5, is characterized in that, described heating means also comprise: after the state of described material to be heated changes, and redefine heating frequency and firing phase.
7. a heater, is characterized in that, described heater comprises:
At least two heating sources;
Controller, for:
Control described heating source to heat material to be heated;
When focus covers the predetermined percentage in region shared by described material to be heated, the frequency of now heating source and phase place are defined as heating frequency and firing phase respectively, and the temperature difference between wherein said focus is in preset range; And
Control described heating source to heat with described heating frequency and described firing phase.
8. heater according to claim 7, is characterized in that, described heater also comprises:
Temperature scanning device, for scanning the temperature of the focus covering region shared by described material to be heated; And
Phase shifter, for changing the phase place of described heating source.
9. heater according to claim 7, is characterized in that, described controller also performs following at least one:
During determining described heating frequency and described firing phase, control described heating source and heat with default heating frequency; And
After determining described heating frequency and described firing phase, control the heating frequency of described heating source according to the kind of described material to be heated and required degree of heat.
10. heating means according to claim 7, is characterized in that, described heating source is produced by same microwave signal generation module.
11. heaters according to claim 7, is characterized in that, when described material to be heated is multiple material to be heated, described controller also perform following in one:
Heated it by the focus covering described multiple material to be heated, a kind of material to be heated stops the focus heating covering this kind of material to be heated after reaching institute's calorific requirement wherein simultaneously;
For often kind of material to be heated, determine described heating frequency and described firing phase, according to described heating frequency, described firing phase and the heating power needed for this kind of material to be heated heat; And
According to the focus area coverage of the high material to be heated of the institute's calorific requirement focus area coverage higher than the low material to be heated of institute's calorific requirement, determine described heating frequency and described firing phase, heat according to described heating frequency, described firing phase.
12. heaters according to claim 7, is characterized in that, described heater also comprises for the feed-in mouth of described heating source to heater feed in energy analysis, and the isolation wherein between feed-in mouth is less than-15dB.
13. heaters according to any one of claim 7 to 12, is characterized in that, described controller also for: after the state of described material to be heated changes, redefine heating frequency and firing phase.
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| CN108573568A (en) * | 2018-04-17 | 2018-09-25 | 合肥美的智能科技有限公司 | Vending machine, door handle heating method, and door handle heating system |
| CN109156052A (en) * | 2016-04-01 | 2019-01-04 | 伊利诺斯工具制品有限公司 | Microwave heating equipment and method for operating microwave heating equipment |
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| US11166352B2 (en) | 2018-12-19 | 2021-11-02 | Nxp Usa, Inc. | Method for performing a defrosting operation using a defrosting apparatus |
| US11039511B2 (en) | 2018-12-21 | 2021-06-15 | Nxp Usa, Inc. | Defrosting apparatus with two-factor mass estimation and methods of operation thereof |
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