CN102949081B - Heating control method for electrical cooking appliance - Google Patents
Heating control method for electrical cooking appliance Download PDFInfo
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- CN102949081B CN102949081B CN201110243648.8A CN201110243648A CN102949081B CN 102949081 B CN102949081 B CN 102949081B CN 201110243648 A CN201110243648 A CN 201110243648A CN 102949081 B CN102949081 B CN 102949081B
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- 238000010411 cooking Methods 0.000 title claims abstract description 34
- 238000010438 heat treatment Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 18
- 235000013305 food Nutrition 0.000 claims abstract description 65
- 238000009835 boiling Methods 0.000 claims abstract description 24
- 230000008859 change Effects 0.000 claims description 11
- 230000006870 function Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 6
- 230000000052 comparative effect Effects 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
- 230000001351 cycling effect Effects 0.000 claims description 2
- 230000003252 repetitive effect Effects 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 7
- 235000013547 stew Nutrition 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention relates to a heating control method for electrical cooking equipment. The heating control method includes: continuously heating food, stopping heating til the food reaches to a first preset temperature; judging whether the heating stopping time reaches a first preset time or not; if yes, acquiring capacity of the food according to a current temperature value of the food and a preset capacity judging temperature value; heating the food and retiming after the capacity of the food is acquired, and in a preset periodic time, judging whether the food is boiling or not according to the current temperature value of the food, a periodic bottom temperature and a preset boiling judging temperature value. The electrical cooking equipment is provided with a fuzzy reasoning functional program capable of accurately controlling heating thermal power.
Description
Technical field
The present invention relates to cooking appliance, particularly relate to a kind of method for heating and controlling of cooking appliance.
Background technology
The heating cooking electrical equipment such as existing computerized electric cooker are generally with upper cover sensor, and ubiquitous upper cover sensor easily damages, and judge inaccurate to the capacity of food, easily cause overflowing, the burnt end, the problem such as not yet done; And whether it seethes with excitement for responding to food in pot, to judge to stew the capacity of interior food from the time that normal temperature is heated to boiling according to food, the time is longer, and capacity is more.
The heating cooking electrical equipment such as existing computerized electric cooker are when control temperature, and generally the simple height according to temperature controls the input of power, and such as design temperature is 70 degrees Celsius time, and when temperature being detected lower than 70 degrees Celsius, total power exports; When temperature being detected higher than 70 degrees Celsius, zero energy exports.It is that control accuracy is low that simple temperature controls shortcoming, and temperature fluctuation is comparatively large, controls not in place under some abnormal conditions.
Summary of the invention
The object of this invention is to provide a kind of method for heating and controlling of cooking appliance, when on reducing when cover sensor, can utilize bottom sensor judge to stew interior food amount of capacity and whether seethe with excitement; And utilize FUZZY ALGORITHMS FOR CONTROL to control, substantially increase control accuracy.
A method for heating and controlling for cooking appliance, be applied on the electric cooker product of conputer controlled, described computerized electric cooker comprises bottom sensor, heater, control device, operating means, circuit and suggestion device; Described heater comprises top heating wire, sidewall heating wire, bottom heat-generating disc; Described control device is single-chip microcomputer, comprises timer, master controller, temperature memory and time memory; Described operating means comprises button and detects and zero passage detection; Described circuit comprises power circuit, reset circuit and battery circuit; Described suggestion device comprises LED display and liquid crystal display; Wherein, the first preset temperature, the second preset temperature, the 3rd preset temperature, the 4th preset temperature and the bottom temperature difference is preset with in described temperature memory, be preset with the first Preset Time and predetermined period time in time memory, the comparative result of time parameter default in the time signal that the comparative result of the temperature parameter preset in the temperature signal that master controller exports according to bottom temp sensor and temperature memory, timer export and time memory controls the action of heater;
Comprise the following steps:
Heating one-phase, continue to heat foods, until described food temperature reach the first preset temperature time, stop heating;
Capacity judges the stage, judges whether the described stopping heat time reaching the first Preset Time, when being judged as YES, judges that temperature value obtains the capacity of described food according to the current temperature value of described food and default capacity; Described default capacity judges that temperature value comprises the second preset temperature and the 3rd preset temperature, if the current temperature value of described food is more than or equal to the second preset temperature, be judged as low capacity, if the current temperature value of described food is greater than the 3rd preset temperature and is less than the second preset temperature, be judged as middle capacity, if the current temperature value of described food is less than or equal to the 3rd preset temperature, be judged as Large Copacity;
The boiling judgement stage, after obtaining the capacity of described food, to heat foods and reclocking, within the predetermined period time, according to the current temperature value of described food, bottom the cycle temperature difference and default boiling judge that temperature value judges whether described food seethes with excitement; Described default boiling judges that temperature value comprises the 4th preset temperature and the bottom temperature difference, when the current temperature value of described food reaches the 4th preset temperature, judges that described food seethes with excitement, enters next control stage; Judge whether the described time reaches the predetermined period time, when being judged as YES, judge bottom the described cycle, whether the temperature difference is less than the bottom temperature difference, when being judged as YES, judge that described food seethes with excitement, enter next control stage, when being judged as NO, to start from scratch reclocking, and repetitive cycling above-mentioned steps is until boiling, enters next control stage;
In the boiling extent control stage, the susceptibility that the food temperature that described control device detects according to bottom temp sensor rises controls the boiling degree of food in pot.
More preferably, described first preset temperature, described first Preset Time, described default capacity judge that temperature value, described predetermined period time and described default boiling judge that temperature value is that cooking appliance prestores or user's setting.
More preferably, described cooking appliance add thermal output by the programme-control with fuzzy reasoning function, by the gap obfuscation of Current Temperatures and target temperature, and by rate of temperature change also obfuscation, become corresponding fuzzy variable, have the respective membership function of two input quantities and output quantity and control law in described cooking appliance, two input quantities are: target temperature difference and rate of temperature change, and an output quantity is: power output.
More preferably, the respective membership function of described two input quantities and output quantity and control law are: current temperature and the gap of target temperature are divided into three class; Rate of temperature change is divided into three class again; According to the position of Current Temperatures point, the mode of tabling look-up is used to obtain power output ratio.
More preferably, described first preset temperature is preferably 95 DEG C, and described second preset temperature is 93 DEG C, and described 3rd preset temperature is 90 DEG C, and described first Preset Time is 2 minutes.
More preferably, described 4th preset temperature is 120 DEG C, and the described bottom temperature difference is 2 DEG C, and the described predetermined period time is 1 minute.
Beneficial effect of the present invention is: adopt the present invention, cooking appliance can utilize while cover sensor on reducing bottom sensor judge to stew interior food amount of capacity and whether seethe with excitement, thus cover sensor can be avoided easily to damage, the capacity of food is judged inaccurate, easily causes overflowing, the burnt end, the problem such as not yet done; And utilize FUZZY ALGORITHMS FOR CONTROL to control, greatly can improve control accuracy, thus it is low to solve simple temperature controlled control accuracy, temperature fluctuation is comparatively large, under some abnormal conditions, control the problems such as not in place.
Accompanying drawing explanation
Fig. 1 is that each device of a kind of cooking appliance of the present invention connects block diagram;
Fig. 2 is the theory diagram of the control device of a kind of cooking appliance of the present invention;
Fig. 3 is the cooking control flow chart of a kind of cooking appliance of the present invention;
Fig. 4 is the computer heating control block diagram of a kind of cooking appliance of the present invention;
Fig. 5 is that the capacity of a kind of cooking appliance of the present invention judges stage control block diagram;
Fig. 6 is that the boiling of a kind of cooking appliance of the present invention judges stage control block diagram;
Fig. 7 is the bottom temp change schematic diagram of a kind of cooking appliance of the present invention;
Fig. 8 is variations in temperature and the target temperature relation schematic diagram of a kind of cooking appliance of the present invention;
Fig. 9 is the power stage parameter list of a kind of cooking appliance of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
The present invention is generally applied on the electric cooker product of conputer controlled, and as shown in Figure 1 and Figure 2, described computerized electric cooker comprises bottom sensor 1, heater 2, control device 3, operating means 4, circuit 5 and suggestion device 6 to its structural representation; Described heater 2 comprises top heating wire 21, sidewall heating wire 22, bottom heat-generating disc 23; Described control device 3 i.e. single-chip microcomputer comprises timer 31, master controller 32, temperature memory 33 and time memory 34; Described operating means 4 comprises button and detects 41 and zero passage detection 42; Described circuit 5 comprises power circuit 51, reset circuit 52 and battery circuit 53; Described suggestion device 6 comprises LED display 61 and liquid crystal display 62.
Be below the effect of above-mentioned module:
Button detects 41: user can by the working method of button setup control device 3;
Zero passage detection 42: whether the zero cross signal detecting mains supply, also exist for detecting mains supply;
Bottom temp sensor 1: for detecting the temperature of food in cooking appliance pot, in order to judge the duty of cooking appliance;
Power circuit 51: for whole control device provides low-tension supply;
Reset circuit 52: when control device operating voltage is lower than single-chip microcomputer 3 acceptable magnitude of voltage, reset circuit provides reset signal to make single-chip microcomputer 3 reset, and protection single-chip microcomputer 3 normally works;
Battery circuit 53: when mains supply disconnects, provide power supply by battery circuit, so that relevant information preserved by single-chip microcomputer 3;
LED display 61, liquid crystal display 62: by the display mode of liquid crystal and LED, represent to user the duty that control device is current;
Bottom 23, top 21, sidewall heat driven 22: for cooking appliance provides heat, single-chip microcomputer 3, by controlling switch and the power of heat driven, reaches the effect of culinary art;
Single-chip microcomputer 3: the signal processor of control device, coordinates the work of each several part circuit.
The first preset temperature P2, the second preset temperature P31, the 3rd preset temperature P32, the 4th preset temperature P4 and bottom temperature difference Pt1 is preset with in said temperature memory 33, be preset with the first preset time T 1 and predetermined period time T2 in time memory 34, the comparative result of time parameter default in the time signal that the comparative result of the temperature parameter preset in the temperature signal that master controller 32 exports according to bottom temp sensor 1 and temperature memory 33, timer 31 export and time memory 34 controls the action of heater 2.
See Fig. 3-Fig. 7, be concrete cooking methods, this cooking methods comprises the following steps:
Heating one-phase S100: temperature when setting P1 point as starting, master controller 32 makes timer 31 start from scratch timing, and drive heater 2 to continue heat foods, master controller 32 accepts the food temperature signal P that bottom temp sensor 1 detects simultaneously, and by the heating action of following regular drive heater 2: when food temperature P equals the first preset temperature P2, heater 2 stops heating, and the capacity that enters judges the stage.In the present embodiment, the first preset temperature P2 is 95 DEG C.
Capacity judges stage S200: master controller 32 makes timer 31 start from scratch reclocking, master controller 32 accepts the food temperature signal P of bottom temp sensor 1 detection and the time signal T of timer 31 detection simultaneously, and by the heating action of following regular drive heater 2: when time signal T equals very first time T1, food temperature signal P equals P3, according to the comparison of P3 with the second preset temperature P31 and the 3rd preset temperature P32, judge to take the dish out of the pot the capacity of interior food, enter the boiling judgement stage.In the present embodiment, very first time T1 is 2 minutes, and the second preset temperature P31 is 93 DEG C, and the 3rd preset temperature P32 is 90 DEG C.After 2 minutes, if temperature is more than or equal to 93 DEG C, be judged as low capacity; If temperature is greater than 90 DEG C and is less than 93 DEG C, be judged as middle capacity; If temperature is less than or equal to 90 DEG C, be judged as Large Copacity.
Boiling judgement stage S300: master controller 32 makes timer 31 start from scratch reclocking, and drive heater 2 to continue heat foods, master controller 32 accepts food temperature difference Pt in the food temperature signal P of bottom temp sensor 1 detection, the time signal T of timer 31 detection and predetermined period time T2 simultaneously, and by the heating action of following regular drive heater 2: when pot bottom temperature signal P equals the 4th preset temperature P4, judge that the food in pot seethes with excitement, enter next control stage; When time signal T equals predetermined period time T2, and in predetermined period time T2 bottom the cycle temperature difference Pt be less than bottom temperature difference Pt1, judge that the food in pot seethes with excitement, enter next control stage; When time signal T equals predetermined period time T2, and in predetermined period time T2 bottom the cycle temperature difference Pt be more than or equal to bottom temperature difference Pt1, heater 2 continues heating, master controller 32 makes timer 31 start from scratch reclocking, and the above-mentioned steps that circulates is until boiling, enters next control stage.In the present embodiment, predetermined period time T2 is 1 minute, and the 4th preset temperature P4 is 120 DEG C, and bottom temperature difference Pt1 is 2 DEG C.Current temperature is compared with the temperature before 1 minute, if when temperature difference Pt is less than 2 DEG C bottom the cycle, be then judged as fluidized state, if temperature reaches 120 DEG C still can not meet this condition, is also judged as fluidized state, enters next control stage.
More preferably, also comprise the boiling extent control stage, the susceptibility that the food temperature that described control device 3 detects according to bottom temp sensor 1 rises controls the boiling degree of food in pot.
In described control device 3, establishment has the program with fuzzy reasoning function, the respective membership function of two input quantities and output quantity and control law is had in described control device 3, two input quantities are: target temperature difference and rate of temperature change, and an output quantity is: power output.
It is the target temperature controlled see Fig. 8, Tset.Be divided into 4 quadrants according to the change curve of temperature, first quartile is lower than target temperature, and temperature is in rising; Second quadrant is higher than target temperature, and temperature is in rising; Third quadrant is higher than target temperature, and temperature is in decline; Fourth quadrant is lower than target temperature, and temperature is in decline.
In each quadrant, by the gap obfuscation of Current Temperatures and target temperature, and by rate of temperature change also obfuscation, become corresponding fuzzy variable.The method of tabling look-up according to these variable uses again or calculate draws the power ratio of heating, then controls heater 2 by control device 3 and export corresponding power.
In the present embodiment, at quadrant 1, current temperature and the gap of target temperature are divided into large, medium and small three class, and use △ P1, △ P2, △ P3 represent; Rate of temperature change is divided into soon again, in, slow three class, use △ Pt1, △ Pt2, △ Pt3 to represent; According to the position of Current Temperatures point, use the mode of tabling look-up just can obtain power ratio.As shown in Fig. 9 (a), if current temperature is at △ P2, △ Pt2 class, the power ratio obtained is on/off=50/10.
Other quadrant is consistent with quadrant 1 principle, and its power ratio is see Fig. 9 (b), 9 (c), 9 (d).
In this computerized electric cooker product, owing to not having top cover sensor, computer controller only judges the state of food in pot by the signal of bottom sensor, thus carrys out the work of control heater.Because interior pot is movable with contacting of bottom heat-generating disc, and sensor is positioned at the outside of pot, directly can not sense the temperature of food in pot, the state of the interior food that is therefore difficult to judge accurately to take the dish out of the pot.And use the present invention, then can improve the degree of accuracy that in pot, food judges greatly, make electric cooker product complete cooking function well to reach, take refuge and occur overflowing, boiling the bad phenomenon such as not yet done.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (6)
1. the method for heating and controlling of a cooking appliance, it is characterized in that, described method for heating and controlling is applied on the electric cooker product of conputer controlled, and described computerized electric cooker comprises bottom sensor, heater, control device, operating means, circuit and suggestion device; Described heater comprises top heating wire, sidewall heating wire, bottom heat-generating disc; Described control device is single-chip microcomputer, comprises timer, master controller, temperature memory and time memory; Described operating means comprises button and detects and zero passage detection; Described circuit comprises power circuit, reset circuit and battery circuit; Described suggestion device comprises LED display and liquid crystal display; Wherein, the first preset temperature, the second preset temperature, the 3rd preset temperature, the 4th preset temperature and the bottom temperature difference is preset with in described temperature memory, be preset with the first Preset Time and predetermined period time in time memory, the comparative result of time parameter default in the time signal that the comparative result of the temperature parameter preset in the temperature signal that master controller exports according to bottom temp sensor and temperature memory, timer export and time memory controls the action of heater;
Comprise the following steps:
Heating one-phase, continue to heat foods, until described food temperature reach the first preset temperature time, stop heating;
Capacity judges the stage, judges whether the described stopping heat time reaching the first Preset Time, when being judged as YES, judges that temperature value obtains the capacity of described food according to the current temperature value of described food and default capacity; Described default capacity judges that temperature value comprises the second preset temperature and the 3rd preset temperature, if the current temperature value of described food is more than or equal to the second preset temperature, be judged as low capacity, if the current temperature value of described food is greater than the 3rd preset temperature and is less than the second preset temperature, be judged as middle capacity, if the current temperature value of described food is less than or equal to the 3rd preset temperature, be judged as Large Copacity; The boiling judgement stage, after obtaining the capacity of described food, to heat foods and reclocking, within the predetermined period time, according to the current temperature value of described food, bottom the cycle temperature difference and default boiling judge that temperature value judges whether described food seethes with excitement; Described default boiling judges that temperature value comprises the 4th preset temperature and the bottom temperature difference, when the current temperature value of described food reaches the 4th preset temperature, judges that described food seethes with excitement, enters next control stage; Judge whether the described time reaches the predetermined period time, when being judged as YES, judge bottom the described cycle, whether the temperature difference is less than the bottom temperature difference, when being judged as YES, judge that described food seethes with excitement, enter next control stage, when being judged as NO, to start from scratch reclocking, and repetitive cycling above-mentioned steps is until boiling, enters next control stage;
In the boiling extent control stage, the susceptibility that the food temperature that described control device detects according to bottom temp sensor rises controls the boiling degree of food in pot.
2. control method according to claim 1, is characterized in that:
Described first preset temperature, described first Preset Time, described default capacity judge that temperature value, described predetermined period time and described default boiling judge that temperature value is that cooking appliance prestores or user's setting.
3. control method according to claim 1 and 2, is characterized in that:
Described cooking appliance add thermal output by the programme-control with fuzzy reasoning function, by the gap obfuscation of Current Temperatures and target temperature, and by rate of temperature change also obfuscation, become corresponding fuzzy variable, the respective membership function of two input quantities and output quantity and control law is had in described cooking appliance, two input quantities are: target temperature difference and rate of temperature change, and an output quantity is: power output.
4. control method according to claim 3, is characterized in that:
The respective membership function of described two input quantities and output quantity and control law are: current temperature and the gap of target temperature are divided into three class; Rate of temperature change is divided into three class again; According to the position of Current Temperatures point, the mode of tabling look-up is used to obtain power output ratio.
5. control method according to claim 1 and 2, is characterized in that: described first preset temperature is preferably 95 DEG C, and described second preset temperature is 93 DEG C, and described 3rd preset temperature is 90 DEG C, and described first Preset Time is 2 minutes.
6. control method according to claim 1 and 2, is characterized in that:
Described 4th preset temperature is 120 DEG C, and the described bottom temperature difference is 2 DEG C, and the described predetermined period time is 1 minute.
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| CN201110243648.8A CN102949081B (en) | 2011-08-24 | 2011-08-24 | Heating control method for electrical cooking appliance |
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| CN201110243648.8A CN102949081B (en) | 2011-08-24 | 2011-08-24 | Heating control method for electrical cooking appliance |
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| CN104414485B (en) * | 2013-09-03 | 2017-02-15 | 美的集团股份有限公司 | Liquid heating device and control method thereof |
| CN104456654B (en) * | 2013-09-13 | 2017-01-11 | 美的集团股份有限公司 | Induction cooker and control method thereof |
| CN104503504B (en) * | 2014-11-22 | 2017-05-17 | 蚌埠依爱电子科技有限责任公司 | Heating control method for reducing temperature fluctuation of breeding house |
| CN105877463B (en) * | 2015-01-26 | 2018-02-06 | 佛山市顺德区美的电热电器制造有限公司 | The food blanching control method and device of cooking apparatus and cooking apparatus |
| CN106289431A (en) * | 2015-05-28 | 2017-01-04 | 佛山市顺德区美的电热电器制造有限公司 | Identify method and the electricity cooking pot of meter Shui Liang in electricity cooking pot cooking process |
| CN104957966B (en) * | 2015-07-24 | 2017-11-07 | 广东美的厨房电器制造有限公司 | A kind of cooking apparatus and its control method |
| CN107198454A (en) * | 2016-06-21 | 2017-09-26 | 九阳股份有限公司 | A kind of cooking apparatus and its method for heating and controlling |
| CN106377166B (en) * | 2016-08-26 | 2018-12-04 | 珠海格力电器股份有限公司 | Heating control method and system of electronic cooking appliance |
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| CN106598102B (en) * | 2016-12-07 | 2018-10-02 | 宁波方太厨具有限公司 | A kind of heating cooking apparatus and its Baoshang control method |
| CN108958315B (en) * | 2017-05-22 | 2020-11-06 | 佛山市顺德区美的电热电器制造有限公司 | Method and device for controlling cooking and heating of electric cooker |
| CN107692853B (en) * | 2017-07-14 | 2023-04-07 | 浙江绍兴苏泊尔生活电器有限公司 | Control method of cooking appliance |
| CN109953653B (en) * | 2017-12-14 | 2021-08-27 | 佛山市顺德区美的电热电器制造有限公司 | Cooking method, cooking appliance, and computer-readable storage medium |
| 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 |
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| CN111713957B (en) * | 2019-03-19 | 2022-10-14 | 佛山市顺德区美的电热电器制造有限公司 | Cooking method, cooking equipment and computer readable storage medium |
| CN111053440B (en) * | 2019-09-18 | 2021-12-14 | 浙江苏泊尔家电制造有限公司 | Cooking control method and device and electric stewpan |
| CN114515116B (en) * | 2020-11-20 | 2023-07-14 | 杭州九阳小家电有限公司 | Slurry overflow preventing method and food processor |
| CN115542809B (en) * | 2022-09-30 | 2024-02-20 | 佛山食神网络智能科技有限公司 | Universal controller |
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| JPH0685731B2 (en) * | 1986-12-27 | 1994-11-02 | タイガー魔法瓶株式会社 | Cooking method |
| JP2907530B2 (en) * | 1990-11-27 | 1999-06-21 | 東芝ホームテクノ株式会社 | Rice cooker heating control method |
| JP3329119B2 (en) * | 1995-02-17 | 2002-09-30 | 東芝ホームテクノ株式会社 | rice cooker |
| CN2246477Y (en) * | 1995-03-02 | 1997-02-05 | 北京爱普亚太电子有限公司 | Computer controller for fuzzy controlling electric rice cooker |
| CN101766439B (en) * | 2010-01-05 | 2012-06-27 | 美的集团有限公司 | Electric cooker and cooking heating control method thereof |
| CN102090840B (en) * | 2010-11-29 | 2012-11-21 | 九阳股份有限公司 | Pressure electric cooker and rice cooking method thereof |
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Effective date of registration: 20170120 Address after: 528000 Guangdong, Chancheng, south of the Five Ridges District, North Avenue, No. 131, room three, one of the 2606 Patentee after: Foshan chef Network Technology Co. Ltd. Address before: 528137 Guangdong city in Foshan Province, Leping Town, Sanshui District, West Road No. 13 East high-tech business center Patentee before: He Yizhi Patentee before: You Xiaoyong |