CN101766439A - Electric cooker and rice-cooking heating control method - Google Patents

Electric cooker and rice-cooking heating control method Download PDF

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Publication number
CN101766439A
CN101766439A CN201010019219A CN201010019219A CN101766439A CN 101766439 A CN101766439 A CN 101766439A CN 201010019219 A CN201010019219 A CN 201010019219A CN 201010019219 A CN201010019219 A CN 201010019219A CN 101766439 A CN101766439 A CN 101766439A
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China
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heating
temp
stage
time
rice
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CN201010019219A
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Chinese (zh)
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CN101766439B (en
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何毅东
王健全
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美的集团有限公司
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Abstract

The invention relates to an electric cooker and a rice-cooking heating control method. The electric cooker comprises a cooker body, an inner container, an upper cover device, a heating device for heating the inner container and food; wherein the outside of the bottom of the inner container is provided with a bottom temperature detector for detecting temperature of the inner container, the upper cover device is provided with a cover temperature detector for detecting temperature of the upper cover and a control device for controlling rice cooking; the control device comprises a main controller and a timer and a memory respectively connected with the main controller; the output terminals of the bottom temperature detector and the cover temperature detector are connected with the input terminal of the main controller, the output terminal of the main controller is electrically connected with the heating device. The rice-cooking control method of the invention at least comprises a first heating phase, a second heating phase and a first boiling phase; wherein in the second heating phase, heating temperature and heating time of the first boiling phase is determined by heating time of the first heating phase, so that moisture of small amount of rice can be fully evaporated and overflow can be prevented; in addition, early termination of heating due to abnormal conditions at the bottom of the inner container in the case of large amount of rice can be avoided, thus ensuring enough heating to ripen the rice.

Description

A kind of electric cooker and rice-cooking heating control method thereof
Technical field
The present invention is a kind of electric cooker and rice-cooking heating control method thereof, belongs to the innovative technology of electric cooker and rice-cooking heating control method thereof.
Background technology
At present common on the market electric cooker generally all be the inner bag bottom outside and on cover and be respectively arranged with temperature inductor, its process of cooking is divided into following four steps: bottom temp is maintained continue heating about 5~10 minutes in 50~60 ℃ of scopes, meter coolant-temperature gage is remained on help in the temperature range of grain of rice suction to absorb water fully; 2, bottom temp is maintained and continue heating in 110~120 ℃ of scopes, reach about 70~80 ℃, judge that Mi Shui enters the rice water weight range that fluidized state is also accurately judged heating until the loam cake temperature; 3, to heat, reach about 125~135 ℃, finish boiling until bottom temp with corresponding suitable power of rice water weight range or Power Regulation ratio; 4, small-power or Power Regulation are kept bottom temp and are being cooked rice over a slow fire about 5~10 minutes near 95~105 ℃ than heating.
In said process, because the bottom control temperature in the step 2,3 is higher, boil a large amount of rice and the bottom control temperature of rice is the same in a small amount, often when boiling rice in a small amount, can occur overflowing or the phenomenon of steam port bubbling because of the temperature height.In addition, when step 3, tend to make this step finish in advance and can't guarantee enough heat time heating times, cause rice to have half-cooked phenomenon owing to overheating, particularly boil under the situation of a large amount of rice particularly important.
Summary of the invention
The objective of the invention is to consider the problems referred to above and a kind of transmission that can effectively control heat is provided, guarantee that millet water gaging part is fully evaporated, prevent spillover; The unusual problem that heats up and finish in advance in when effectively avoiding the rice amount again because bottom guarantees to have enough electric cookers that heat fully boils rice that adds.
Another object of the present invention is to provide a kind of control electric cooker porridge boiling heating control method simply and easily.
Technical scheme of the present invention is: electric cooker of the present invention, include pot body, place the inner bag that is used for food container in pot body, inner bag is carried out the capping device of capping, the heater that inner bag and food are heated, wherein the bottom outside of inner bag is provided with the end thermal detector that is used to detect the inner bag temperature, capping device is provided with the control device that is used to detect the lid thermal detector of loam cake temperature and controls the work of cooking, control device includes master controller and timer that is connected with master controller respectively and memory, end thermal detector is connected with the input of master controller with the output of lid thermal detector, and the output of master controller is electrically connected with heater.
Above-mentioned memory includes time memory and temperature memory.
Be preset with the first bottom temp Tb1, the second bottom temp Tb2, the 3rd bottom temp Tb3, the 4th bottom temp Tb4, the 5th bottom temp Tb5, the first loam cake temperature T t1 and the second loam cake temperature T t2 in the said temperature memory, be preset with very first time t1, the second time t2 and the 3rd time t3 in the time memory.
The rice-cooking heating control method of electric cooker of the present invention, master controller are controlled the action of heater according to the comparative result of the time parameter of presetting in the time signal of the comparative result of temperature parameter default in the temperature signal of end thermal detector and lid thermal detector output and the temperature memory, timer output and the time memory.
The rice-cooking heating control method of electric cooker of the present invention comprised with the next stage:
Heat a stage: the timer timing t that starts from scratch, master controller with the bottom temp Tb that detects and the default second bottom temp Tb2 relatively: Tb is during more than or equal to Tb2, the heater stop heating; Tb is during less than Tb2, and heater begins heating; Until the loam cake temperature T t that detects more than or equal to the first default loam cake temperature T t1, with count one time in stage of heating t compare with one time in stage of the heating tz that is deposited with in the time memory 11, judge a rice amount grade N, and enter the heating two-stage;
The heating two-stage: master controller with the bottom temp Tb that detects with default, with corresponding the 3rd bottom temp Tb3 of rice amount grade N relatively: Tb is during more than or equal to Tb3, the heater stop heating; Tb is during less than Tb3, and heater begins heating; Until the loam cake temperature T t that detects more than or equal to default, with the corresponding second loam cake temperature T t2 of rice amount grade N, enter one stage of boiling;
Seethe with excitement a stage: the timer timing t that starts from scratch, master controller with the bottom temp Tb that detects with default, with corresponding the 3rd bottom temp Tb3 of rice amount grade N relatively: Tb is during more than or equal to Tb3, the heater stop heating; Tb is during less than Tb3, and heater begins heating; Until count time t equal to preset, with the corresponding second time t2 of rice amount grade N, the process of cooking finishes.
Above-mentioned the 3rd bottom temp Tb3 increases progressively and increases progressively with tz value grade, and scope is 90~120 ℃; The 4th bottom temp Tb4 increases progressively and increases progressively with tz value grade, and scope is 120~140 ℃.
The above-mentioned second loam cake temperature T t2 increases progressively and increases progressively with tz value grade, and scope is 60~85 ℃; The second time t2 increases progressively and increases progressively with tz value grade, and scope is 1~20 minute.
Above-mentioned one time in stage of heating tz is the total time in one stage of heating, or heats the total time that heater is opened in the stage.
Also include the suction stage before above-mentioned one stage of heating: the timer timing t that starts from scratch, master controller with the bottom temp Tb that detects and the default first bottom temp Tb1 relatively: Tb is during more than or equal to Tb1, the heater stop heating; Tb is during less than Tb1, and heater begins heating; Until count the time t very first time t1 that equals to preset, enter one stage of heating.
Also include the boiling two-stage after above-mentioned one stage of boiling: master controller with the bottom temp Tb that detects with default, with corresponding the 4th bottom temp Tb4 of rice amount grade N relatively: Tb is during more than or equal to Tb4, the heater stop heating, the process of cooking finishes.
Also include the stage of cooking rice over a slow fire after the above-mentioned boiling two-stage: the timer timing t that starts from scratch, master controller with bottom temp Tb and default the 5th bottom temp Tb5 relatively: Tb is during more than or equal to Tb5, the heater stop heating; Tb is during less than Tb5, and heater begins heating; Until count time t the 3rd time t3 that equals to preset, the process of cooking finishes.
The present invention can effectively control the transmission of heat owing to adopt by taking in heating two, in one stage of boiling and meter heating-up temperature that amount is complementary and the control method of time, guarantees that millet water gaging part is fully evaporated, and prevents spillover; The unusual problem that heats up and finish in advance in when effectively avoiding the rice amount again because bottom, guaranteeing has enough heats that adds that rice is fully boiled.。The present invention is that a kind of design is ingenious, and function admirable convenient and practical is with earth leakage protective combined socket and switch.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the theory diagram of control device of the present invention;
Fig. 3 is cook variations in temperature schematic diagram in the process of electric cooker of the present invention;
Fig. 4 is the cook control flow chart of process of electric cooker of the present invention;
Fig. 5 is the electric cooker of the present invention parameter list of process in each stage of cooking.
The specific embodiment
Embodiment:
Structural representation of the present invention such as Fig. 1, shown in Figure 2, include pot body 1, place the inner bag 2 that is used for food container in pot body 1, inner bag 2 is carried out the capping device 3 of capping, the heater 4 that inner bag and food are heated, be arranged on the end thermal detector 5 that the inner bag bottom outside is used to detect the inner bag temperature, be arranged on the control device 7 that is used to detect the lid thermal detector 6 of loam cake temperature in the capping device and controls the work of cooking, control device 7 includes integrated master controller 8, timer 9, temperature memory 10 and time memory 11, timer 9, temperature memory 10, time memory 11 is connected with master controller 8 respectively, end thermal detector 5 is connected with the input of master controller 8 with the output of lid thermal detector 6, and the output of master controller 8 is electrically connected with heater 8.
Be preset with the first bottom temp Tb1 in the said temperature memory 10, the second bottom temp Tb2, the 3rd bottom temp Tb3, the 4th bottom temp Tb4, the 5th bottom temp Tb5, the first loam cake temperature T t1 and the second loam cake temperature T t2, be preset with very first time t1 in the time memory 11, the second time t2 and the 3rd time t3, master controller 8 is according to the comparative result of the temperature parameter of presetting in the temperature signal of end thermal detector 5 and 6 outputs of lid thermal detector and the temperature memory 10, the comparative result of default time parameter is controlled the action of heater 4 in the time signal of timer 9 outputs and the time memory 11.
As shown in Figure 3, Figure 4, the cooking control method of electric cooker of the present invention comprises following six stages:
1. absorb water the stage: the timer 9 timing t that starts from scratch, master controller 8 drive heaters 4 to be continued bottom temp signal Tb is accepted in the food heating simultaneously, and bottom temp Tb is during more than or equal to the default first bottom temp Tb1, and heater 4 stops heating; Bottom temp Tb is during less than the default first bottom temp Tb1, and heater 4 begins heating; Otherwise next bottom temp signal Tb is carried out above-mentioned comparison, circulate repeatedly until timer 9 the time t very first time t1 that equals to preset, enter the next stage.In the present embodiment, Tb1 is 60 ℃, and t1 is 10min.Keep bottom temp about 50~65 ℃ in this stage, continue 5~10 minutes, purpose is to make the grain of rice to absorb water better, and the starch that is beneficial to the follow-up phase mesogranule transforms.
2. heat a stage: the timer 9 timing t that starts from scratch, master controller 8 is accepted bottom temp signal Tb and loam cake temperature signal Tt, and bottom temp Tb is during more than or equal to the default second bottom temp Tb2, and heater 4 stops heating; Bottom temp Tb is during less than the default second bottom temp Tb2, and heater 4 begins heating; Otherwise next bottom temp signal Tb is carried out above-mentioned comparison, circulate repeatedly until loam cake temperature T t more than or equal to the first default loam cake temperature T t1, with timer 9 time t compare with one time in stage of the heating t z that is deposited with in the time memory 11, judge rice amount grade N (showing), and enter the next stage as Fig. 5 a.In the present embodiment, Tb2 is 120 ℃, and Tt1 is 50 ℃.This stage is provided with the bottom holding temperature higher, and purpose is to make heat can upload to fast in the middle of rice and the water.
In addition, the time tz of this heating two-stage can be the total time in this stage, also can be this stage heater service time add up and, its purpose is to utilize the length of this time to distinguish different rice amount grades, so that the control in follow-up each stage is handled.
3. heat the two-stage: master controller 8 is accepted bottom temp signal Tb and loam cake temperature signal Tt, bottom temp Tb more than or equal to default, during with corresponding the 3rd bottom temp Tb3 of rice amount grade N, heater 4 stops heating; Bottom temp Tb less than default, during with corresponding the 3rd bottom temp Tb3 of rice amount grade N, heater 4 begins heating; Otherwise next bottom temp signal Tb is carried out above-mentioned comparison, circulate repeatedly until detected loam cake temperature signal Tt more than or equal to default, with the corresponding second loam cake temperature T t2 of rice amount grade N, enter the next stage.In the present embodiment, Tt2, Tb3 are provided with different values according to different rice weight ranges, and be corresponding with the time tz value in one stage of heating, shown in Fig. 5 a.
The second loam cake temperature T t2 increases progressively by grade with tz and increases progressively by grade in 60~85 ℃ scope; The 3rd bottom temp Tb3 increases progressively by grade with tz and increases progressively by grade in 90~120 ℃ scope.Purpose is, regulates different rice amounts in the heat time heating time in this stage by the second different loam cake temperature T t2 is set on the one hand, guarantees that different rice amounts have the suitable heat that adds in this stage.Satisfy according under the different rice amount situations by the value of regulating the 3rd bottom temp Tb3 on the other hand, heater and be heated suitable temperature difference is arranged between the food, thereby effectively control the heat transfer rate, make that rice does not overflow in a small amount, a large amount of rice have enough heat transmission.
4. seethe with excitement a stage: the timer 9 timing t that starts from scratch, master controller 8 is accepted bottom temp signal Tb, bottom temp Tb more than or equal to default, during with corresponding the 3rd bottom temp Tb3 of rice amount grade N, heater 4 stops heating; Bottom temp Tb less than default, during with corresponding the 3rd bottom temp Tb3 of rice amount grade N, heater 4 begins heating; Otherwise next bottom temp signal Tb is carried out above-mentioned comparison, circulate repeatedly until timer 9 time t equal to preset, with the corresponding second time t2 of rice amount grade N, enter the next stage.In the present embodiment, t2 is 7 minutes to 13 minutes, and is corresponding with the time tz value in one stage of heating, and according to different rice weight ranges different values is set, shown in Fig. 5 b.
Consider the difference of product structure, the second time t2 can be arranged in 1~20 minute.Purpose is that continuing to keep heater on the one hand and being heated has suitable temperature difference between the food, effectively control the heat uploading rate; On the other hand, guarantee by different boiling time t2 is set: under the situation of a small amount of rice, moisture content is fully absorbed and is evaporated the condition of overflowing generation with reduction; Under the situation of a large amount of rice, effectively avoid because the unusual intensification in bottom finishes this stage in advance and can't guarantee enough heats that adds.
5. seethe with excitement the two-stage: master controller 8 is accepted bottom temp signal Tb, and drives heater 4 and continue the food heating, until bottom temp Tb more than or equal to default, with corresponding the 4th bottom temp Tb4 of rice amount grade N, enter the next stage.In the present embodiment, the 4th bottom temp Tb4 is provided with different values according to different rice weight ranges, and is promptly corresponding with the time tz value in one stage of heating, shown in Fig. 5 c.
The 4th bottom temp Tb4 increases progressively by grade with tz and increases progressively by grade in 120~140 ℃ scope.
6. cook rice over a slow fire the stage: the timer 9 timing t that starts from scratch, master controller 8 is accepted bottom temp signal Tb, and bottom temp Tb is during more than or equal to default the 5th bottom temp Tb5, and heater 4 stops heating, bottom temp Tb is during less than default the 5th bottom temp Tb5, and heater 4 begins heating; Otherwise next bottom temp signal Tb is carried out above-mentioned comparison, circulate repeatedly until timer 9 time t the 3rd time t3 that equals to preset, finish whole heating process.In the present embodiment, Tb5 is 100 ℃, and t3 is 10min.
In the present embodiment, the first bottom temp Tb1, the second bottom temp Tb2, the 3rd bottom temp Tb3, the 5th bottom temp Tb5 are monodrome, it is a kind of value of comparatively perfect condition, consider product life problems in actual use, above temperature also can be set to certain scope, as the first bottom temp Tb1 is 58~62 ℃, peak Tb1max is 62 ℃, minimum Tb1min is 58 ℃, accordingly, in the suction stage, bottom temp Tb is during greater than Tb1max, and heater 4 stops heating; Bottom temp Tb is during less than Tb1min, and heater 4 begins heating.
Particular content according to mentality of designing of the present invention and the foregoing description, remove individual stage or all stages in suction stage, the two-stage of boiling and the stage of cooking rice over a slow fire, and keep one stage of heating, heating two-stage and the stage of seething with excitement, control parameter by in these three processes of suitable adjusting can have the effect of well cooking equally.In addition, heating two-stage and boiling can be merged into a stage in one stage, judged that by heating amount that a stage obtains the time of deciding after the merging in stage finishes whole heating process.

Claims (11)

1. electric cooker, include pot body (1), place the inner bag (2) that is used for food container in pot body (1), inner bag (2) is carried out the capping device (3) of capping, the heater (4) that inner bag (2) and food are heated, it is characterized in that inner bag (2) bottom outside is provided with the end thermal detector (5) that is used to detect the inner bag temperature, capping device (3) is provided with the control device (7) that is used to detect the lid thermal detector (6) of loam cake temperature and controls the work of cooking, control device (7) includes master controller (8) and the timer (9) and the memory that are connected with master controller (8) respectively, end thermal detector (5) is connected with the input of master controller (8) with the output of lid thermal detector (6), and the output of master controller (8) is electrically connected with heater (8).
2. electric cooker according to claim 1 is characterized in that above-mentioned memory includes time memory (11) and temperature memory (10).
3. electric cooker according to claim 2, it is characterized in that being preset with in the said temperature memory (10) the first bottom temp Tb1, the second bottom temp Tb2, the 3rd bottom temp Tb3, the 4th bottom temp Tb4, the 5th bottom temp Tb5, the first loam cake temperature T t1 and the second loam cake temperature T t2, be preset with very first time t1, the second time t2 and the 3rd time t3 in the time memory (11).
4. rice-cooking heating control method according to the described electric cooker of claim 2 is characterized in that master controller (8) controls the action of heater (4) according to the comparative result of the time parameter of presetting in the time signal of the comparative result of temperature parameter default in the temperature signal of end thermal detector (5) and lid thermal detector (6) output and the temperature memory (10), timer (9) output and the time memory (11).
5. the rice-cooking heating control method of electric cooker according to claim 4 is characterized in that comprising with the next stage:
Heat a stage: the timer timing t that starts from scratch, master controller with the bottom temp Tb that detects and the default second bottom temp Tb2 relatively: Tb is during more than or equal to Tb2, the heater stop heating; Tb is during less than Tb2, and heater begins heating; Until the loam cake temperature T t that detects more than or equal to the first default loam cake temperature T t1, with count one time in stage of heating t compare with one time in stage of the heating tz that is deposited with in the time memory 11, judge a rice amount grade N, and enter the heating two-stage;
The heating two-stage: master controller with the bottom temp Tb that detects with default, with corresponding the 3rd bottom temp Tb3 of rice amount grade N relatively: Tb is during more than or equal to Tb3, the heater stop heating; Tb is during less than Tb3, and heater begins heating; Until the loam cake temperature T t that detects more than or equal to default, with the corresponding second loam cake temperature T t2 of rice amount grade N, enter one stage of boiling;
Seethe with excitement a stage: the timer timing t that starts from scratch, master controller with the bottom temp Tb that detects with default, with corresponding the 3rd bottom temp Tb3 of rice amount grade N relatively: Tb is during more than or equal to Tb3, the heater stop heating; Tb is during less than Tb3, and heater begins heating; Until count time t equal to preset, with the corresponding second time t2 of rice amount grade N, the process of cooking finishes.
6. according to the rice-cooking heating control method of the described electric cooker of claim 5, it is characterized in that above-mentioned the 3rd bottom temp Tb3 with the increasing progressively and increase progressively of tz value grade, scope is 90~120 ℃; The 4th bottom temp Tb4 increases progressively and increases progressively with tz value grade, and scope is 120~140 ℃.
7. according to the rice-cooking heating control method of the described electric cooker of claim 5, it is characterized in that the above-mentioned second loam cake temperature T t2 with the increasing progressively and increase progressively of tz value grade, scope is 60~85 ℃; The second time t2 increases progressively and increases progressively with tz value grade, and scope is 1~20 minute.
8. according to the rice-cooking heating control method of the described electric cooker of claim 5, it is characterized in that above-mentioned one time in stage of heating tz is the total time in one stage of heating, or heat the total time that heater is opened in the stage.
9. the rice-cooking heating control method of described electric cooker according to Claim 8, it is characterized in that also including the suction stage before above-mentioned one stage of heating: the timer timing t that starts from scratch, master controller is with the bottom temp Tb that detects and the default first bottom temp Tb1 relatively: Tb is during more than or equal to Tb1, the heater stop heating; Tb is during less than Tb1, and heater begins heating; Until count the time t very first time t1 that equals to preset, enter one stage of heating.
10. according to the rice-cooking heating control method of the described electric cooker of claim 9, it is characterized in that also including the boiling two-stage after above-mentioned one stage of boiling: master controller with the bottom temp Tb that detects with default, with corresponding the 4th bottom temp Tb4 of rice amount grade N relatively: Tb is during more than or equal to Tb4, the heater stop heating, the process of cooking finishes.
11. rice-cooking heating control method according to the described electric cooker of claim 10, it is characterized in that also including the stage of cooking rice over a slow fire after the above-mentioned boiling two-stage: the timer timing t that starts from scratch, master controller is with bottom temp Tb and default the 5th bottom temp Tb5 relatively: Tb is during more than or equal to Tb5, the heater stop heating; Tb is during less than Tb5, and heater begins heating; Until count time t the 3rd time t3 that equals to preset, the process of cooking finishes.
CN2010100192198A 2010-01-05 2010-01-05 Electric cooker and rice-cooking heating control method CN101766439B (en)

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