CN102525284B - Control method of rice cooking by adopting electric rice cooker with stainless-steel inner container - Google Patents
Control method of rice cooking by adopting electric rice cooker with stainless-steel inner container Download PDFInfo
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Abstract
The invention discloses a control method of rice cooking by adopting an electric rice cooker with a stainless-steel inner container, for reducing the cost of a stainless-steel electric rice cooker and cooking rice very well. The control method comprises the following steps: a microprocessor selects time required by rise range of temperature of the bottom of the stainless-steel inner container, calculates the temperature-rise speed, and divides the heating time into heating time sections at 5-20 gears; when the heating time is reached, the heating stops for a period of time; when the temperature falls to a second temperature point, heating is continuously carried out, the time-interval heating mode is adopted; and after the temperature reaches a third temperature point, the rice cooking process is finished. Compared with the prior art, the control method has the advantages that microprocessor is adopted for realizing control in stages, so that rice in the rice cooker can not be burnt or undercooked when the stainless-steel inner container is heated, the stainless-steel inner container can be accurately controlled, the methods for the electric rice cooker to control different inner containers are increased, and the control accuracy is improved.
Description
Technical field
The present invention relates to a kind of control method of rice cooking by adopting electric rice cooker, particularly a kind of control method of stainless-steel pan inner container electric rice cooker cooking rice.
Background technology
Electric cooker brings conveniently to the life of people, prior art controls the method for rice cooking by adopting electric rice cooker, adopt the temperature sensor in the circular hole be arranged in the middle of heat-generating disc, as magnet steel thermostat or negative temperature coefficient NTC thermistor, a fixing temperature value is set on the control circuitry, as 140 DEG C, in temperature sensor senses to when being more than or equal to this temperature value, after control circuit cuts off heating power supply, enter keeping warm mode, this control method is applicable to aluminum pot inner bag.Stainless steel chemistry good stability, the people of stainless-steel pan is used to get more and more, because stainless heat transfer rate and aluminum are not identical, cooking with stainless steel inner container is not that rice by pot burns, boil not yet done rice exactly, the inapplicable stainless-steel pan inner bag of control method of prior art rice cooking by adopting electric rice cooker.For this reason, have people at the bottom of stainless-steel pan, increase a composite base, with uniformly transfer heat, but this causes the cost of stainless steel electric cooker significantly to rise, and adds the expense using electric cooker.
Summary of the invention
The object of this invention is to provide a kind of control method of stainless-steel pan courage rice cooking by adopting electric rice cooker, the technical problem that solve reduces the cost of stainless steel electric cooker, cooked rice.
For solving the problem, present invention employs following technical scheme: a kind of control method of stainless-steel pan courage rice cooking by adopting electric rice cooker, comprise the following steps: one, start to cook, microprocessor sends call for heat to the heat-generating disc power supply of electric cooker, heat-generating disc heats stainless-steel pan inner bag, the temperature value in the temperature sensor Real-Time Monitoring stainless-steel pan inner bag the bottom of a pan; Two, the time needed for the temperature elevating range of stainless-steel pan inner bag cooking bottom temperature chosen by microprocessor, calculates programming rate, according to programming rate, is divided into the heat time section of 5-20 gear the heat time, and the heat time then stops heating a period of time; Three, when stainless-steel pan inner bag cooking bottom temperature is reduced to the second temperature spot, microprocessor sends continuation call for heat to heat-generating disc, and heat-generating disc power supply continues heating to stainless-steel pan inner bag after receiving call for heat, and mode of heating is heating interval time; Four, when stainless-steel pan inner bag cooking bottom temperature arrives the 3rd temperature spot, microprocessor sends stopping call for heat to heat-generating disc power supply, and heat-generating disc stops heating stainless-steel pan inner bag, and cooking rice terminates; Temperature at the end of described first temperature spot is the heat time section of 5-20 gear, the temperature of described second temperature spot is not more than 100 DEG C near 100 DEG C, the temperature of the 3rd temperature spot lower than the first temperature spot temperature and be greater than 100 DEG C; The diameter of described heat-generating disc is not less than the external diameter of stainless-steel pan inner bag.
Heat time, according to the heating-up time, is divided into the time period of 10 gears by method of the present invention.
Method microprocessor of the present invention is warming up to 95 DEG C of elapsed times according to the stainless-steel pan inner bag the bottom of a pan from 81 DEG C, calculates programming rate.
The method heat time of the present invention then stops heating a period of time for stopping heating 3 minutes.
Method of the present invention to be heated to be and to be energized 15 second time to heat-generating disc interval time, and the mode of 5 second time of power-off circulates.
On the lid of method electric cooker of the present invention or pot courage upper side the second temperature sensor is installed, microprocessor timing from stainless-steel pan inner bag upper temp 100 DEG C, by the gear heat time of correspondence then stop heating.
Method of the present invention is warming up to 95 DEG C of elapsed times from 81 DEG C: A is≤60 seconds, and the heat time is 170 seconds; B is 60 < B≤120 second, and the heat time is 200 seconds; C is 120 < C≤140 second, and the heat time is 210 seconds; D is 140 < D≤160 second, and the heat time is 220 seconds; E is 160 < E≤180 second, and the heat time is 230 seconds; F is 180 < F≤195 second, and the heat time is 240 seconds; G is 195 < G≤210 second, and the heat time is 250 seconds; H is 210 < H≤225 second, and the heat time is 260 seconds; I is 225 < I≤240 second, and the heat time is 270 seconds; J is > 240 seconds, and the heat time is 280 seconds.
Method microprocessor of the present invention timing from stainless-steel pan inner bag cooking bottom temperature 95 DEG C, then stops heating by the gear heat time of correspondence.
Method of the present invention is warming up to 95 DEG C of elapsed times from 81 DEG C: A is≤60 seconds, and the heat time is 180 seconds; B is 60 < B≤120 second, and the heat time is 250 seconds; C is 120 < C≤140 second, and the heat time is 280 seconds; D is 140 < D≤160 second, and the heat time is 300 seconds; E is 160 < E≤180 second, and the heat time is 320 seconds; F is 180 < F≤195 second, and the heat time is 340 seconds; G is 195 < G≤210 second, and the heat time is 360 seconds; H is 210 < H≤225 second, and the heat time is 380 seconds; I is 225 < I≤240 second, and the heat time is 400 seconds; J is > 240 seconds, and the heat time is 420 seconds.
Method of the present invention will be divided into two stages the heat time; According to upper temp setting time as the first sequential control mode, according to the stainless-steel pan inner bag the bottom of a pan setting time as the second sequential control mode.
The present invention compared with prior art, adopt microprocessor, realize control by stages, and the temperature spot that the first stage turns insulation turns the temperature spot of insulation higher than second stage, heat according to the amount stepping of cooking rice in the first stage, when arriving the heating setpoint time, the of short duration stopping heating of Microprocessor S3C44B0X heat-generating disc, when temperature is lower than 100 DEG C, at second stage Microprocessor S3C44B0X heat-generating disc, interval heating is carried out to pot courage, when temperature arrives design temperature point, electric cooker then enters keeping warm mode, pass through said method, make rice in pot to be burnt or boil not yet done when heating stainless-steel pan courage, can control stainless-steel pan courage accurately, increase electric cooker to the control method of different pot courage, improve accuracy rate.
Accompanying drawing explanation
Fig. 1 is the temperature profile in the electric rice cooker the bottom of a pan.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1, when electric cooker is cooked close to rated capacity by rated power, rated capacity or 90%, be arranged on the temperature in the temperature sensor senses the bottom of a pan in the circular hole in the middle of heat-generating disc.In beginning a period of time of cooking rice, when the grain of rice and water not boiling, because the grain of rice is deposited in the bottom of pot, form grain of rice layer, cause the heat-generating disc heat transfer under the water on grain of rice layer top and pot bottom to be obstructed, the temperature of pot upper water is lower than the temperature under the grain of rice layer of the bottom of a pan.The cooking bottom temperature that temperature sensor detects rises in time, after the grain of rice of pot bottom and water seethe with excitement, when temperature is greater than a point (as 120 DEG C) of 100 DEG C, the boiling aggravation of water, the water of boiling upwards breaks through grain of rice layer, pot upper temp and cooking bottom temperature are reached unanimity, and temperature sensor detects that cooking bottom temperature drops to the b point (as 97 DEG C) lower than 100 DEG C gradually.Heat-generating disc continues heating, and boiled dry gradually to the water in rice, temperature sensor detects that cooking bottom temperature rises again gradually.For convenience of controlling, prior art adopts cooking bottom temperature when d point (as 140 DEG C) higher than a point, and control circuit cuts off the heating power supply of heat-generating disc, enters keeping warm mode.Learnt by experiment, during electric rice cooker, the temperature curve in the bottom of a pan presents two crests, is respectively a point and d point, and the trough between a point and d point is b point.
The present invention includes following steps:
One, start to cook, MCU sends call for heat to the heat-generating disc power supply of electric cooker, and heat-generating disc heats stainless-steel pan inner bag, and the temperature in the stainless-steel pan inner bag the bottom of a pan rises, and temperature sensor starts the temperature value in the Real-Time Monitoring stainless-steel pan inner bag the bottom of a pan.
Two, when the temperature in the stainless-steel pan inner bag the bottom of a pan reaches 100 DEG C, the water boiling of pot bottom, starts cooking rice.Because the heating power of electric cooker, inner bag volume are fixed, the amount of cooking rice is variable with not being both of the number of having a meal, to identical heating power, inner bag volume, if when boiling less rice, first temperature spot a, the second temperature spot b and the 3rd temperature spot c are close, and temperature curve is tending towards smooth.In order to adapt to volume change of cooking, controlling cooked rice, can adopt following methods, this temperature curve is divided into two stages: with b point for boundary, is the first stage before b point, is second stage after b point.In the first stage, choose the warming temperature scope of stainless-steel pan inner bag cooking bottom temperature, as 81-95 DEG C, in seconds, microprocessor is warming up to 95 DEG C of elapsed times according to from 81 DEG C, calculates programming rate, thus indirectly judges cooking rice amount.According to programming rate, is divided into the different time periods (gear) heat time, as marked off 5-20 in advance, the best is 10 gears, corresponding different gears, timing from stainless-steel pan inner bag cooking bottom temperature 95 DEG C, the corresponding heat time then stops heating.Further, according to corresponding gear, microprocessor utilizes upper temperature control to detect stainless-steel pan inner bag top boiling situation, when seething with excitement in top, upper temp is 100 DEG C, timing from stainless-steel pan inner bag upper temp 100 DEG C, and the corresponding gear heat time then stops heating.
Learn through experiment, when control stainless-steel pan inner bag upper temp, can accurately control rice to boil, therefore the time upper temperature control set is as the first sequential control mode, the time of end temperature control setting, as the second sequential control mode, namely pays the utmost attention to the control time of temperature control setting.
Electric cooker stops heating 2-4 minute, and the best is 3 minutes, and stainless-steel pan inner bag cooking bottom temperature starts to decline.After heat-generating disc stops heating stainless-steel pan inner bag, due to the continuation heat effect of heat-generating disc waste heat, in the process being cooled to b point, the grain of rice and water (thin rice gruel) constantly boiling: continue cooking rice, in this process, the grain of rice starts deliquescing with the increase of the time of cooking, because heat-generating disc is not heated, boiling degree progressively reduces (in other words water is by reaching greatly little opening) by large, and the grain of rice avoiding deliquescing is bloomed and popped, and makes the rice grain that boils full, the more saturating heart of rice, mouthfeel is good, effectively can also save electric energy, but also does not have thin rice gruel to overflow.
Three, when stainless-steel pan inner bag cooking bottom temperature is reduced to the second temperature spot b, MCU sends continuation call for heat to heat-generating disc, heat-generating disc power supply continues heating to stainless-steel pan inner bag after receiving call for heat, mode of heating is heating interval time, namely to the 15 second time of jug with heating disk, stops the 5 second time of heating, heat 15 second time again, ..., continue cooking rice, temperature sensor continues the real-time temperature values adopting the stainless-steel pan inner bag the bottom of a pan.
Four, when stainless-steel pan inner bag cooking bottom temperature arrives the 3rd temperature spot c, MCU sends stopping call for heat to heat-generating disc power supply, heat-generating disc stops heating stainless-steel pan inner bag, MCU sends insulation order to electric cooker simultaneously, electric cooker enters keeping warm mode, cooking rice terminates, and the superfluous water steam in rice is progressively evaporated, and the temperature of stainless-steel pan inner bag starts to decline.
The diameter of the heat-generating disc that the present invention adopts is not less than the external diameter of stainless-steel pan inner bag.
The first temperature sensor (end temperature control) arranged in the circular hole in the middle of heat-generating disc, measures stainless-steel pan inner bag cooking bottom temperature.On the lid of electric cooker or pot courage upper side the second temperature sensor (upper temperature control) is installed, measure the temperature on electric cooker top, accurately control rice cooking by adopting electric rice cooker for measuring further, described first temperature sensor and the second temperature sensor adopt negative temperature coefficient NTC thermistor.
Embodiment: heating power is 900W, 5L, will be divided into 10 gears the first stage, the corresponding heating-up time of 10 grades, according to the heat time of the heat time of end temperature control temperature setting, the setting of upper temperature control temperature, as shown in table 1.First stage stops heating (turning insulation) temperature to be set to 130 DEG C, heat time arrives, stop heating 3 minutes temperature control temperature on earth 99 DEG C, first stage terminates, and enters second stage, heats 15 seconds, stop heating 5 seconds, circulate with this, turn insulation to when being more than or equal to end temperature control temperature 102 DEG C, second stage terminates.
Table 1: gear control time
Claims (10)
1. the control method of a stainless-steel pan courage rice cooking by adopting electric rice cooker, comprise the following steps: one, start to cook, microprocessor sends call for heat to the heat-generating disc power supply of electric cooker, heat-generating disc heats stainless-steel pan inner bag, the temperature value in the temperature sensor Real-Time Monitoring stainless-steel pan inner bag the bottom of a pan; Two, the time needed for the temperature elevating range of stainless-steel pan inner bag cooking bottom temperature chosen by microprocessor, calculates programming rate, according to programming rate, is divided into the heat time section of 5-20 gear the heat time, and the heat time then stops heating a period of time; Three, when stainless-steel pan inner bag cooking bottom temperature is reduced to the second temperature spot, microprocessor sends continuation call for heat to heat-generating disc, and heat-generating disc power supply continues heating to stainless-steel pan inner bag after receiving call for heat, and mode of heating is heating interval time; Four, when stainless-steel pan inner bag cooking bottom temperature arrives the 3rd temperature spot, microprocessor sends stopping call for heat to heat-generating disc power supply, and heat-generating disc stops heating stainless-steel pan inner bag, and cooking rice terminates; Temperature at the end of first temperature spot is the heat time section of 5-20 gear, the temperature of described second temperature spot is not more than 100 DEG C near 100 DEG C, the temperature of the 3rd temperature spot lower than the first temperature spot temperature and be greater than 100 DEG C; The diameter of described heat-generating disc is not less than the external diameter of stainless-steel pan inner bag; On the lid of described electric cooker or pot courage upper side the second temperature sensor is installed, microprocessor timing from stainless-steel pan inner bag upper temp 100 DEG C, by the gear heat time of correspondence then stop heating.
2. the control method of stainless-steel pan courage rice cooking by adopting electric rice cooker according to claim 1, is characterized in that: according to the heating-up time, is divided into the time period of 10 gears the heat time.
3. the control method of stainless-steel pan courage rice cooking by adopting electric rice cooker according to claim 2, is characterized in that: described microprocessor is warming up to 95 DEG C of elapsed times according to the stainless-steel pan inner bag the bottom of a pan from 81 DEG C, calculates programming rate.
4. the control method of stainless-steel pan courage rice cooking by adopting electric rice cooker according to claim 3, is characterized in that: the described heat time then stops heating a period of time for stopping heating 3 minutes.
5. the control method of stainless-steel pan courage rice cooking by adopting electric rice cooker according to claim 4, it is characterized in that: be heated to be described interval time and be energized 15 second time to heat-generating disc, the mode of 5 second time of power-off circulates.
6. the control method of stainless-steel pan courage rice cooking by adopting electric rice cooker according to claim 3, is characterized in that: be describedly warming up to 95 DEG C of elapsed times from 81 DEG C and be: A is≤60 seconds, and the heat time is 170 seconds; B is 60 < B≤120 second, and the heat time is 200 seconds; C is 120 < C≤140 second, and the heat time is 210 seconds; D is 140 < D≤160 second, and the heat time is 220 seconds; E is 160 < E≤180 second, and the heat time is 230 seconds; F is 180 < F≤195 second, and the heat time is 240 seconds; G is 195 < G≤210 second, and the heat time is 250 seconds; H is 210 < H≤225 second, and the heat time is 260 seconds; I is 225 < I≤240 second, and the heat time is 270 seconds; J is > 240 seconds, and the heat time is 280 seconds.
7. the control method of a stainless-steel pan courage rice cooking by adopting electric rice cooker, comprise the following steps: one, start to cook, microprocessor sends call for heat to the heat-generating disc power supply of electric cooker, heat-generating disc heats stainless-steel pan inner bag, the temperature value in the temperature sensor Real-Time Monitoring stainless-steel pan inner bag the bottom of a pan; Two, the time needed for the temperature elevating range of stainless-steel pan inner bag cooking bottom temperature chosen by microprocessor, calculates programming rate, according to programming rate, is divided into the heat time section of 5-20 gear the heat time, and the heat time then stops heating a period of time; Three, when stainless-steel pan inner bag cooking bottom temperature is reduced to the second temperature spot, microprocessor sends continuation call for heat to heat-generating disc, and heat-generating disc power supply continues heating to stainless-steel pan inner bag after receiving call for heat, and mode of heating is heating interval time; Four, when stainless-steel pan inner bag cooking bottom temperature arrives the 3rd temperature spot, microprocessor sends stopping call for heat to heat-generating disc power supply, and heat-generating disc stops heating stainless-steel pan inner bag, and cooking rice terminates; Temperature at the end of first temperature spot is the heat time section of 5-20 gear, the temperature of described second temperature spot is not more than 100 DEG C near 100 DEG C, the temperature of the 3rd temperature spot lower than the first temperature spot temperature and be greater than 100 DEG C; The diameter of described heat-generating disc is not less than the external diameter of stainless-steel pan inner bag; The timing from stainless-steel pan inner bag cooking bottom temperature 95 DEG C of described microprocessor, then stops heating by the gear heat time of correspondence.
8. the control method of stainless-steel pan courage rice cooking by adopting electric rice cooker according to claim 7, is characterized in that: described microprocessor is warming up to 95 DEG C of elapsed times according to the stainless-steel pan inner bag the bottom of a pan from 81 DEG C, calculates programming rate.
9. the control method of stainless-steel pan courage rice cooking by adopting electric rice cooker according to claim 8, is characterized in that: be describedly warming up to 95 DEG C of elapsed times from 81 DEG C and be: A is≤60 seconds, and the heat time is 180 seconds; B is 60 < B≤120 second, and the heat time is 250 seconds; C is 120 < C≤140 second, and the heat time is 280 seconds; D is 140 < D≤160 second, and the heat time is 300 seconds; E is 160 < E≤180 second, and the heat time is 320 seconds; F is 180 < F≤195 second, and the heat time is 340 seconds; G is 195 < G≤210 second, and the heat time is 360 seconds; H is 210 < H≤225 second, and the heat time is 380 seconds; I is 225 < I≤240 second, and the heat time is 400 seconds; J is > 240 seconds, and the heat time is 420 seconds.
10. the control method of the stainless-steel pan courage rice cooking by adopting electric rice cooker according to claim 1 or 7, is characterized in that: then stopped the heat time of heating to be divided into two stages described gear heat time by correspondence; According to stainless-steel pan inner bag upper temp setting time as the first sequential control mode, according to the stainless-steel pan inner bag the bottom of a pan setting time as the second sequential control mode.
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| CN104257268B (en) * | 2014-09-03 | 2019-05-21 | 九阳股份有限公司 | Rice cooker and its control method |
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| 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 |
| CN110115521A (en) * | 2018-02-06 | 2019-08-13 | 佛山市顺德区美的电热电器制造有限公司 | Control method, device, storage medium and the food cooking machine of food cooking machine |
| 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 |
| CN112859963B (en) * | 2019-11-27 | 2022-10-14 | 佛山市顺德区美的电热电器制造有限公司 | Control method, device, equipment and storage medium |
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