CN101513325B - Electric cooking appliance and heating control method thereof - Google Patents
Electric cooking appliance and heating control method thereof Download PDFInfo
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- CN101513325B CN101513325B CN2009100382768A CN200910038276A CN101513325B CN 101513325 B CN101513325 B CN 101513325B CN 2009100382768 A CN2009100382768 A CN 2009100382768A CN 200910038276 A CN200910038276 A CN 200910038276A CN 101513325 B CN101513325 B CN 101513325B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 42
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- 238000009835 boiling Methods 0.000 claims abstract description 35
- 230000000630 rising effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
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- 239000004927 clay Substances 0.000 abstract 1
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Abstract
The invention belongs to the field of household appliances, and relates to an electric cooker and a heating control method thereof, wherein a control part and a temperature sensor are arranged in a pot body of the electric cooker; the control part comprises a main controller, a first timer, a second timer, a time increment memory and a total working time memory, wherein the main controller is respectively electrically connected with the heater, the temperature sensor, the first timer, the second timer, the time increment memory and the total working time memory; the heating control method comprises a preheating stage A and a heating temperature-rising stage B, wherein in the heating temperature-rising stage B, the main controller controls the heater to continue heating or the heating temperature-rising stage B is finished according to the time increment delta t measured by the second timer and the preset time increment in the time increment storage, the total working time t measured by the first timer and the preset total working time in the total working time storage. The invention can accurately judge the quantity and the boiling state of food, has simple control and low cost, and is suitable for various electric stewpots and purple clay pots.
Description
Technical field
The invention belongs to household appliance technical field, particularly can accurately detect the electric cooking appliance of food temperature and fluidized state, the invention still further relates to the method for heating and controlling of this electric cooking appliance.
Background technology
The computermatic electric cooking appliance that existing market is sold as boccaro pot, electric cooker etc., generally all is that the temperature detector by bottom of pot body comes the perception cooking bottom temperature whether to reach preset temperature value, thereby judges the fluidized state of food indirectly.All there be the situation higher than the boiling point of water in the said temperature preset value, when the deal of cooking has difference, as boils aliquot amount food, and when the perception cooking bottom temperature reached preset temperature value, food often seethed with excitement out in the pot, was difficult to avoid the phenomenon of overflowing; As when boiling big deal food, when the perception cooking bottom temperature has reached preset temperature value, but a food temperature may be still lower in the pot.For pot in the boccaro, above-mentioned situation is more serious especially.
In the prior art, disclose a kind of temperature detector and sender unit that on pot cover, is provided with electrical connection as Chinese patent ZL200420044253.0 " a kind of accurate electric food warmer that detects pot courage temperature ", on the pot body, be provided with the thermometry of wireless signal receiving system.Though can accurately judge fluidized state, it is many to relate to parts, complex structure, cost height.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of electric cooking appliance and method for heating and controlling thereof are provided, it can judge accurately whether food seethes with excitement, and need not increase new parts, and simple in structure, cost is low.
In order to realize the foregoing invention purpose, the present invention includes following technical scheme: a kind of electric cooking appliance, comprise a pot body, pot cover, interior pot and be arranged in heater under the pot; Be provided with the temperature sensor of pot temperature in control assembly, the detection in the pot body; Control assembly comprises master controller, calculates first timer of net cycle time t; Master controller is electrically connected with heater, temperature sensor, first timer respectively, and described control assembly also comprises second timer that is used to calculate a unit value Δ T required time increment Delta t of interior pot temperature rising; The pot temperature incremental time memory of a unit value Δ T required time that raises in when being preset with the boiling of N food servings grade; Be preset with the net cycle time memory of required time from beginning to seething with excitement of N food servings grade; Described master controller is electrically connected with second timer, incremental time memory, net cycle time memory respectively.
Further, in order to measure interior pot temperature, described temperature sensor is located at interior pot down, and contacts with the interior the bottom of a pan.
The invention still further relates to a kind of electric cooking appliance method for heating and controlling, comprise warm-up phase A and heat temperature raising stage B; Described heat temperature raising stage B comprises the steps:
B1: master controller drives heater with the heating of high-power or big Power Regulation ratio, controls first timer and calculates net cycle time t;
B2: the incremental time Δ t of a unit value Δ T of pot temperature rising in second timer calculates; Master controller according under corresponding N default in this incremental time Δ t and the incremental time memory food servings grade during boiling in the raise incremental time of a unit value Δ T required time of pot temperature, control heater continues heating or the end of heat temperature raising stage B.
Further, the default pairing food servings grade of incremental time comprises N different deal grade in the described incremental time memory, and step B2 comprises the steps:
B21: master controller with the pairing incremental time Δ of minimum food servings t1 in incremental time Δ t and the incremental time memory relatively, as Δ t during less than Δ t1, master controller is judged food not boiling as yet in the pot, drive heater and continue heating, the second timer reclocking Δ t, and continuation and incremental time Δ t1 comparison;
B22: when Δ t is not less than Δ t1, the master controller circulation will respectively be organized adjacent m grade deal successively in incremental time Δ t and the incremental time memory, the pairing incremental time Δ of m+1 grade deal tm, Δ t (m+1) relatively, when Δ t is not less than Δ tm, and during less than Δ t (m+1), master controller will this moment in the net cycle time t that gets of the first timer meter and the net cycle time memory the default pairing net cycle time tzm of m grade deal compare: as if t less than tzm, master controller judges that food does not reach boiling as yet in the pot, drive heater and continue heating, second timer restarts timing, and enters step B21; If t is not less than tzm, master controller judges that food is m grade deal in the pot, and has reached boiling, and the heat temperature raising stage B finishes;
B23: in Δ t and incremental time memory the pairing incremental time Δ of maximum food servings tN relatively, and Δ t is when being not less than Δ tN, master controller judges that food is the maximum deal of N grade in the pot, and has reached boiling, the heat temperature raising stage B finishes.
Another kind of situation is: only default incremental time Δ tb in the described incremental time memory, during its corresponding fixing food servings grade, step B2 comprises the steps: as Δ t during less than Δ tb, master controller is judged food not boiling as yet in the pot, second timer restarts timing, waits for that next time Δ t and Δ tb compare; If Δ t is not less than Δ tb, master controller judges that food has reached boiling in the pot, and the heat temperature raising stage B finishes.
For full and uniform being heated of pot in making, guarantee the fluidized state accuracy of judgement, described warm-up phase A comprises the steps: main controller controls first timer designated firing duration t that starts from scratch, and driving heater with small-power or the heating of ditty merit ratio, the time t that gets until the first timer meter reaches preset time t 1.
Be provided with after the described heat temperature raising stage B and keep boiling stage C.
The present invention compared with prior art has following beneficial effect: electric cooking appliance of the present invention does not need to increase extra parts, but by predefined incremental time in incremental time Δ t and the incremental time memory, judge whether food has reached boiling in the pot, and control heater continues heating or the heat temperature raising stage B finishes.Can accurately judge the deal and the fluidized state of pot interior food like this, control is simple, and cost is low, is applicable to electric cooking pot that all kinds of loam cakes separate, boccaro pot etc.
Description of drawings
Fig. 1 is an embodiment of the invention boccaro Cooker structure schematic diagram;
Fig. 2 is an embodiment of the invention boccaro pot circuit module schematic diagram;
Fig. 3 is the relation curve schematic diagram of temperature, time and the heating power of embodiment of the invention boccaro pot when work;
Fig. 4 is temperature, the time relation curve synoptic diagram of each food servings of embodiment of the invention boccaro pot;
Fig. 5 is the flow chart that embodiment of the invention boccaro pot is judged food boiling in the pot.
The specific embodiment
Below in conjunction with Figure of description, embodiments of the invention are elaborated.
As shown in Figure 1, 2, a kind of embodiment of the present invention is the boccaro pot, comprising: a kind of electric cooking appliance comprises pot body 1, pot cover 2, interior pot 3 and is arranged on 3 times internal pot 3 heaters that heat 4 of interior pot; Pot be provided with control assembly 11 in the body 1 and be located in pot 3 times contact the temperature sensor 5 of pot 3 bottom temps in being used to detect with 3 ends of interior pot; Wherein control assembly 11 comprises master controller 8, net cycle time t is carried out first timer 6 of timing, second timer 7 that pairing incremental time Δ t carried out timing when the interior pot temperature that temperature sensor 5 is detected raise a unit value Δ T, incremental time memory 9 and net cycle time memory 10; Master controller 8 is electrically connected with heater 4, temperature sensor 5, first timer 6, second timer 7, incremental time memory 9 and net cycle time memory 10 respectively.
In embodiment 1, institute's incremental time one to one when the food temperature that temperature sensor 5 detects when reaching boiling that is preset with N the different deal grades from minimum deal to maximum deal in the incremental time memory 9 raises a unit value Δ T (as 1 ℃): Δ t1, Δ t2, Δ t3 ..., Δ tN, wherein Δ t1 is minimum deal time corresponding increment, Δ tN is maximum deal time corresponding increment, food servings is big more, and pairing incremental time value is big more; The food that is preset with other the different deal grades except that maximum deal in the net cycle time memory 10 from begin to reach boiling need the net cycle time that expends one by one: tz1, tz2, tz3 ..., tz (N-1), wherein tz1 is the net cycle time of minimum deal correspondence, food servings is big more, and pairing net cycle time value is big more.Above-mentioned each default parameter value all is to obtain according to a large amount of experiments repeatedly.
Present embodiment is clear simple for what explain, only food servings is made as 3 deal grades such as little deal, middle deal, big deal, default incremental time is followed successively by Δ t1=15 second, Δ t2=20 second, Δ t3=25 second in the incremental time memory 9, and net cycle time default in the net cycle time memory 10 is followed successively by tz1=20 branch, tz2=30 branch.
As Fig. 3, Fig. 4, shown in Figure 5, judge during the work of present embodiment boccaro pot that the method for food boiling comprises warm-up phase A and heat temperature raising stage B:
Warm-up phase A: the first timer 6 timing t that starts from scratch, master controller 8 drives heater 4 with less Power Regulation ratio heating, as heated 60 seconds, do not heat 60 seconds, circulation is carried out, until first timer 6 time t reach preset time t 1, as 3 minutes, warm-up phase A finishes, and enters the heat temperature raising stage B.
The purpose of warm-up phase A is full and uniform being heated of pot in making, especially for pot in pottery, the boccaro class material, low-power add heat energy make heat fully be delivered in the various piece of pot, the interior pot that pot local heating causes in avoiding problem such as break prolongs service life of product.In addition, pot had a more stable temperature rise trend at heating t1 in the preset time t 1 of warm-up phase A can guarantee after the time, was convenient to the accurate judgement of parameter in the heat temperature raising stage B.
The heat temperature raising stage B: first timer 6 continues timing, second timer 7 temperature signal that calculates temperature sensor 5 outputs that master controller 8 the receives pairing incremental time Δ t when having raise a unit value Δ T (as 1 ℃) that starts from scratch, master controller 8 drives heater 4 with bigger Power Regulation ratio heating, as uninterrupted lasting heating.Master controller 8 receive second timer 7 incremental time Δ t, and,, carry out following comparison as 15 seconds with the pairing incremental time Δ of the little deal t1 that presets in Δ t and the incremental time memory 9:
If Δ t is less than Δ t1 (15 seconds), master controller 8 is judged food not boiling as yet in the pot, drives heater 4 and continues heating, and second timer 7 restarts timing simultaneously, waits for that next time Δ t and Δ t1 compare.
If Δ t is not less than Δ t1 (15 seconds), master controller 8 carries out following comparison with the pairing incremental time Δ of middle deal t2 (20 seconds) default in Δ t and the incremental time memory 9:
If Δ t is less than Δ t2 (20 seconds), master controller 8 receive counting of first timer 6 net cycle time t, and the pairing net cycle time tz1 of little deal (20 minutes) default in t and the net cycle time memory 10 compared: if t is less than tz1 (20 minutes), master controller 8 judges that food is not little deal in the pot, and do not reach boiling as yet, drive heater 4 and continue heating, second timer 7 restarts timing simultaneously, waits for that next time Δ t and Δ t2 (20 seconds) compare; If t is not less than tz1 (20 minutes), master controller 8 judges that food is little deal in the pot, and has reached boiling, and the heat temperature raising stage B finishes.
If Δ t is not less than Δ t2 (20 seconds), master controller 8 carries out the as above described comparison of step with the pairing incremental time Δ of big deal t3 (25 seconds) default in Δ t and the incremental time memory 9: if Δ t is less than Δ t3 (25 seconds), master controller 8 receive counting of first timer 6 net cycle time t, and the pairing net cycle time tz2 of middle deal (30 minutes) default in t and the net cycle time memory 10 compared: if t is less than tz2 (30 minutes), master controller 8 judges that food is not middle deal in the pot, and do not reach boiling as yet, drive heater 4 and continue heating, second timer 7 restarts timing simultaneously, waits for that next time Δ t and Δ t3 (25 seconds) compare; If t is not less than tz2 (30 minutes), master controller 8 judges that food is middle deal in the pot, and has reached boiling, and the heat temperature raising stage B finishes.
If Δ t is not less than Δ t3 (25 seconds), master controller 8 judges that food is big deal in the pot, and has reached boiling, and the heat temperature raising stage B finishes.
Present embodiment boccaro pot is judged the fluidized state and the deal grade of food in the pot according to the aforementioned heat temperature raising stage, so just can take suitable heating Power Regulation ratio to heat as keeping boiling stage C at follow-up working stage, promptly guarantee the culinary art effect, avoid spillover.
The specified heating power of heater is 500W in the present embodiment.
Each heating Power Regulation in the present embodiment in stage than also can be Power Regulation than corresponding power, be 250W as the heating power of warm-up phase A; The heating power of heat temperature raising stage B is 500W.
Another one embodiment of the present invention is: the present invention only is applicable to the fixing food of a deal boccaro pot of cooking.As the boccaro pot that Baoshang is used, interior pot is gone up sign waterline, and the user needs to add water near waterline during each Baoshang.This boccaro pot and aforementioned branch have the boccaro pot of N food servings grade different be: incremental time default in the incremental time memory 9 has only 1, it is Δ tb=15 second, then do not need default net cycle time parameter in the net cycle time memory 10, accordingly, in the heat temperature raising stage B, master controller 8 drives heater 4 high-power heating, pairing incremental time Δ t when the temperature signal that the real-time detected temperatures sensors 5 of second timer 7 detect has raise a unit value Δ T (as 1 ℃), and the incremental time Δ tb (15 seconds) that presets in this incremental time Δ t and the incremental time memory 9 compared:
If Δ t is less than Δ tb (15 seconds), master controller 8 is judged food not boiling as yet in the pot, and second timer 7 restarts timing, waits for that next time Δ t and Δ tb compare;
If Δ t is not less than Δ tb (15 seconds), master controller 8 judges that food has reached boiling in the pot, and the heat temperature raising stage B finishes.
The present invention can judge the deal and the fluidized state of pot interior food accurately, and control is simple, and cost is low, is applicable to electric cooking appliances such as electric cooking pot that all kinds of pot covers separate, boccaro pot, electric cooker.
Claims (7)
1. electric cooking appliance comprises a pot body (1), pot cover (2), interior pot (3) and is arranged on heater (4) under interior pot (3); Be provided with the temperature sensor (5) of pot temperature in control assembly (11), the detection in the pot body (1); Control assembly (11) comprises master controller (8), calculates first timer (6) of net cycle time t; Master controller (8) is electrically connected with heater (4), temperature sensor (5), first timer (6) respectively, it is characterized in that: described control assembly (11) also comprises second timer (7) that is used to calculate a unit value Δ T required time increment Delta t of interior pot (3) temperature rising; Pot (3) temperature incremental time memory (9) of a unit value Δ T required time that raises in when being preset with the boiling of N food servings grade; Be preset with the net cycle time memory (10) of required time from beginning to seething with excitement of N food servings grade; Described master controller (8) is electrically connected with second timer (7), incremental time memory (9), net cycle time memory (10) respectively.
2. electric cooking appliance according to claim 1 is characterized in that: described temperature sensor (5) is located under the interior pot (3), and contacts with interior pot (3) end.
3. an electric cooking appliance method for heating and controlling comprises warm-up phase A and heat temperature raising stage B; It is characterized in that: described heat temperature raising stage B comprises the steps:
B1: master controller (8) drives heater (4) with the heating of high-power or big Power Regulation ratio, controls first timer (6) and calculates net cycle time t;
B2: master controller (8) control second timer (7) accounting temperature sensor (5) records the incremental time Δ t of a unit value Δ T of interior pot (3) temperature rising; Master controller (8) according under corresponding N default in this incremental time Δ t and the incremental time memory (9) the food servings grade during boiling in the raise incremental time of a unit value Δ T required time of pot (3) temperature, control heater (4) continues heating or the end of heat temperature raising stage B.
4. electric cooking appliance method for heating and controlling according to claim 3 is characterized in that: the default pairing food servings grade of incremental time comprises N different deal grade in the described incremental time memory (9), and step B2 comprises the steps:
B21: master controller (8) with the pairing incremental time Δ of minimum food servings t1 in incremental time Δ t and the incremental time memory (9) relatively, as Δ t during less than Δ t1, master controller (8) is judged food not boiling as yet in the pot, drive heater (4) and continue heating, master controller (8) control second timer (7) reclocking Δ t, and continue Δ t and incremental time Δ t1 are compared;
B22: when Δ t is not less than Δ t1, master controller (8) circulation will respectively be organized adjacent m grade deal in incremental time Δ t and the incremental time memory (9) successively, the pairing incremental time Δ of m+1 grade deal tm, Δ t (m+1) relatively, when Δ t is not less than Δ tm, and during less than Δ t (m+1), master controller (8) will first timer this moment (6) count net cycle time t and net cycle time memory (10) in the default pairing net cycle time tzm of m grade deal compare: as if t less than tzm, master controller (8) judges that food does not reach boiling as yet in the pot, drive heater (4) and continue heating, second timer (7) restarts timing, and enters step B21; If t is not less than tzm, master controller (8) judges that food is m grade deal in the pot, and has reached boiling, and the heat temperature raising stage B finishes;
B23: the pairing incremental time Δ of maximum food servings tN relatively in Δ t and incremental time memory (9), and when Δ t is not less than Δ tN, master controller (8) judges that food is the maximum deal of N grade in the pot, and has reached boiling, and the heat temperature raising stage B finishes.
5. electric cooking appliance method for heating and controlling according to claim 3, it is characterized in that: only default incremental time Δ tb in the described incremental time memory (9), during its corresponding fixing food servings grade, step B2 comprises the steps: as Δ t during less than Δ tb, master controller (8) is judged food not boiling as yet in the pot, second timer (7) restarts timing, waits for that next time Δ t and Δ tb compare; If Δ t is not less than Δ tb, master controller (8) judges that food has reached boiling in the pot, and the heat temperature raising stage B finishes.
6. according to each described electric cooking appliance method for heating and controlling of claim 3～5, it is characterized in that: described warm-up phase A comprises the steps: master controller (8) control first timer (6) the designated firing duration t that starts from scratch, and drive heater with small-power or ditty merit than heating, until first timer (6) count time t reach preset time t 1.
7. electric cooking appliance method for heating and controlling according to claim 6 is characterized in that: be provided with after the described heat temperature raising stage B and keep boiling stage C.
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| CN2009100382768A CN101513325B (en) | 2009-03-27 | 2009-03-27 | Electric cooking appliance and heating control method thereof |
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| CN2009100382768A CN101513325B (en) | 2009-03-27 | 2009-03-27 | Electric cooking appliance and heating control method thereof |
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| CN101513325B true CN101513325B (en) | 2011-07-20 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102727102B (en) * | 2012-06-27 | 2015-05-27 | 美的集团股份有限公司 | Water boiling judgment control method for heater |
| CN104007775A (en) * | 2013-02-25 | 2014-08-27 | 美的集团股份有限公司 | Electrothermal equipment and voltage detection method |
| CN103263224B (en) * | 2013-05-10 | 2016-08-24 | 浙江绍兴苏泊尔生活电器有限公司 | Electric heating device, electric cooker and wireless temperature control method |
| CN105361645B (en) * | 2014-08-29 | 2018-07-13 | 佛山市顺德区美的电热电器制造有限公司 | The control method of the control device of electric cooking apparatus and electric cooking apparatus |
| CN104697615A (en) * | 2015-03-26 | 2015-06-10 | 广东美的厨房电器制造有限公司 | Method and device for detecting food quantity |
| CN107219781B (en) * | 2016-08-29 | 2019-05-21 | 广东万和热能科技有限公司 | The control method boiled for article in the detection container of cooker |
| CN108420322B (en) * | 2018-05-22 | 2021-06-18 | 广东美的厨房电器制造有限公司 | Control method of cooking equipment and cooking equipment |
| CN109062277B (en) * | 2018-08-23 | 2019-08-16 | 珠海格力电器股份有限公司 | Food heating method and device, storage medium and processor |
| CN110856612B (en) * | 2018-08-24 | 2022-03-18 | 佛山市顺德区美的电热电器制造有限公司 | Control method and device of cooking equipment, cooking equipment and storage medium |
| CN109965679B (en) * | 2018-10-17 | 2021-05-14 | 广东美的厨房电器制造有限公司 | Cooking apparatus, method of controlling the same, and computer-readable storage medium |
| CN109717724B (en) * | 2018-12-29 | 2022-06-28 | 珠海优特智厨科技有限公司 | Food material weight detection method, cooking method and equipment |
| CN113384158A (en) * | 2020-03-12 | 2021-09-14 | 广东美的白色家电技术创新中心有限公司 | Control method, cooking utensil and storage medium |
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Application publication date: 20090826 Assignee: FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MANUFACTURING Co.,Ltd. Assignor: Midea Group Contract record no.: 2012440000563 Denomination of invention: Electric cooker and heating control method thereof Granted publication date: 20110720 License type: Exclusive License Record date: 20120917 |
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Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311 Foshan, Shunde District, Beijiao Town, Penglai Road, the United States Industrial City Patentee before: Midea Group |