CN1891115A - Temperature-controlled nutrient slow-stewing cook and its precision automatic temperature-controlling method - Google Patents
Temperature-controlled nutrient slow-stewing cook and its precision automatic temperature-controlling method Download PDFInfo
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- CN1891115A CN1891115A CN 200510079899 CN200510079899A CN1891115A CN 1891115 A CN1891115 A CN 1891115A CN 200510079899 CN200510079899 CN 200510079899 CN 200510079899 A CN200510079899 A CN 200510079899A CN 1891115 A CN1891115 A CN 1891115A
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Abstract
The present invention relates to a nutrient temperature control slowly-braising pan and its accurate automatic temperature control method. It includes the following several portions: pan body, internal enamel container in the pan body interior, control circuit board positioned on the pan body, enamel container sensor, chip microprocessor and automatic switching device. Said control method includes three stages: high-stage, low-stage and heat-insulating stage. Said invention also provides their concrete operation method and steps for implementing accurate temperature control.
Description
Technical field
The present invention relates to a kind of slow cooker, be meant the slow cooker of band attemperating unit especially.The invention still further relates to the accurate temperature automatically controlled method of slow cooker.
Background technology
At present, popular on the market slow cooker or electronics watt pot, the used power of high and low shelves all is fixed value, the insulation shelves adopt small-power to add temperature control or fix certain power.Though this pot is simple in structure, and following shortcoming is arranged:
A) since on the market popular slow cooker or an electronics watt pot top grade all fix with the high power heating, occur overflow or spill may with increase energy consumption, the temperature control that influences that is subject to environmental condition is forbidden.
B) since on the market popular slow cooker, electronics watt pot low grade all use and fixes certain power or with the fixedly power heating of make-to-break ratio, the time during 60 ℃ of its arrival is long, about about 3 hours, easy breed bacteria, the temperature control that influences that is subject to environmental condition is forbidden.
C) be incubated shelves and adopt a small-power to add temperature control or fix certain power, the time when it arrives 60 ℃ is long, and about about 6 hours, easy breed bacteria, the temperature control that influences that is subject to environmental condition is forbidden.
Summary of the invention
The objective of the invention is to propose a kind of nutrition temperature control slow cooker of carrying out dynamic heat according to the food temperature requirement.Purpose of the present invention also will propose a kind of accurate temperature automatically controlled method of nutrition temperature control slow cooker.
Technical scheme provided by the present invention is: it comprises the porcelain courage in a pot body, the pot body, the control circuit board on the pot body, it is characterized in that: also be provided with enamel container sensor, single-chip microcomputer, recloser, wherein, enamel container sensor is contained in porcelain courage bottom, it is connected with the input interface of single-chip microcomputer by sensor resistance, the output interface of single-chip microcomputer is connected with recloser, and recloser connects power supply.
The model of described single-chip microcomputer is HT46R47.
Described single-chip microcomputer comprises interior if peripheral sensor resistance voltage conversion circuit, this circuit comprises sensor thermistor, electric capacity, fixed resistance, wherein, thermistor is in parallel with electric capacity, connect with fixed resistance, its end is connected with power supply, and the other end is connected with the input interface of single-chip microcomputer by another resistance, electric capacity.
Described recloser comprises relay or SCR control circuit.
In order to realize the accurately automatically control of slow cooker temperature, accurate temperature automatically controlled method of the present invention comprises top grade, low grade, insulation shelves is set, and the steps include:
A, on top grade, set the required cooking time when starting working, the time countdown;
1) the saucepan heating with full power simultaneously the temperature of detecting sensor be then with the small-power heating whether more than or equal to T1, as not being then to continue heating with full power;
2) when the temperature of sensor be during more than or equal to T1, whether the saucepan small-power heating temperature of detecting sensor simultaneously is then to stop heating more than or equal to T2, as not being then to continue the small-power heating;
3) when the temperature of sensor be during more than or equal to T2, whether saucepan stops to heat the temperature of while detecting sensor smaller or equal to T3, as be not continue to stop the heating, whether the temperature that is then heating with full power while detecting sensor is more than or equal to T2, so circulation, stop heating during more than or equal to T2, heating with full power during smaller or equal to T3;
4) when the set cooking time covers, saucepan enters the insulation shelves automatically;
B, on low grade, set the required cooking time when starting working, the time countdown;
1) whether the temperature of saucepan heating with full power while detecting sensor is then to heat with small-power more than or equal to T4, is not to continue total power;
2) when the temperature of sensor be during more than or equal to T4, whether the saucepan small-power heating temperature of detecting sensor simultaneously is then to stop heating more than or equal to T5, as not being then to continue the small-power heating;
3) when the temperature of sensor be during more than or equal to T5, whether saucepan stops to heat the temperature of while detecting sensor smaller or equal to T6, as be not continue to stop the heating, whether the temperature that is then heating with full power while detecting sensor is more than or equal to T5, so circulation, stop heating during more than or equal to T5, heating with full power during smaller or equal to T6;
4) when the set cooking time covers, saucepan enters the insulation shelves automatically;
C, on insulation shelves, when setting required temperature retention time and starting working or the high and low set cooking time of shelves cover when entering insulation the time countdown;
1) whether the temperature of saucepan heating with full power while detecting sensor is then to stop heating more than or equal to T7, is not to continue total power;
2) when the temperature of sensor be during more than or equal to T7, whether saucepan stops to heat the temperature of while detecting sensor smaller or equal to T8, be then heating with full power and simultaneously the detecting sensor temperature whether more than or equal to T7, so circulation, stop heating during more than or equal to T7, heating with full power during smaller or equal to T8;
3) when set temperature retention time is covered, saucepan stops insulation automatically, replys holding state.
Described sensor temperature T8＜T7＜T4＜T6＜T5＜T1＜T3＜T2, wherein, T1 is 97 ℃, and T2 is 101 ℃, and T3 is 98 ℃, and T4 is 80 ℃, and T5 is 92 ℃, and T6 is 90 ℃, and T7 is 72 ℃, T8 is 70 ℃.
The present invention has following advantage: is using when high-grade (1), owing to boil when preceding at enamel container sensor perception food temperature, recloser is carried out break-make control and reduce power, therefore, can reduce food and boil over, and simultaneously, can cut down the consumption of energy.(2) when using low grade, because the temperature that the safe temperature (temperature that most of bacterium can not survive) of enamel container sensor energy perception food and most of albumen all solidify, and control heating intensity, therefore, reduce the possibility of food breed bacteria, simultaneously, elongated the time of protein coagulation, it fully is dissolved in the soup, and can guarantees the delicate flavour of soup.(3) owing to be provided with accurate temperature automatically controlled method, and the process test shows, the present invention can be from the food nutrition angle, according to the conversion of safe temperature, protein coagulation temperature, the preceding temperature control heating power that boils, with best nutritional effect and the delicious effect that reaches food.(4) simple in structure, make easily.
Description of drawings
Fig. 1 is the invention structural representation;
Fig. 2 is an operation principle block diagram of the present invention;
Fig. 3 is a sensor resistance voltage conversion circuit schematic diagram;
Fig. 4 is the power-temperature oscillogram of the high-grade heating of the present invention;
Fig. 5 is the power-temperature oscillogram of the low-grade heating of the present invention;
Fig. 6 is power-temperature oscillogram that the present invention is incubated the shelves heating;
Fig. 7 is the flow chart of the accurate temperature automatically controlled method of the present invention;
Fig. 8 is the high-grade oily temperature time plot of the present invention;
Fig. 9 is the high-grade water temperature time plot of the present invention;
Figure 10 is the low-grade water temperature time plot of the present invention.
Figure number explanation: 1 pot of body, 2 porcelain courages, 3 control circuit boards, A relay, B sensor resistance voltage conversion circuit, C single-chip microcomputer, 6 relay contacts, V power supply, C
1Electric capacity, R
6Fixed resistance ,+E power supply, 5 enamel container sensors (thermistor), R
7Resistance, C
2Electric capacity, P power, t temperature, P
1Low-power, P
2Make-to-break ratio power, Pmax total power, t
1Near boiling temperature, t
2The temperature of boiling, t
3Safe temperature (temperature that most of bacterium can not survive), t
4The temperature that most of albumen all solidifies, T1, T2, T3, T4, T5, T6, T7, T8 sensor temperature, the high-grade oily temperature time graph of A1 nutrition temperature control slow cooker, the high-grade oily temperature time graph of the common slow cooker of B1, the high-grade water temperature time graph of A2 nutrition temperature control slow cooker, the high-grade water temperature time graph of the common slow cooker of B2, the low-grade water temperature time graph of A3 nutrition temperature control slow cooker, the low-grade water temperature time graph of the common slow cooker of B3, the warm small-power hot spot of C oil, the warm constant starting point of D oil, E water temperature small-power hot spot, t
OThe oil temperature, t
WWater temperature, the S time.
The specific embodiment
Below in conjunction with description of drawings the specific embodiment of the present invention.
As Fig. 1, Fig. 2, shown in Figure 3, porcelain courage 2 is contained in pot body 1, and enamel container sensor 5 is in porcelain courage 2 bottoms, and enamel container sensor 5 adopts the NTC thermistor, and when variations in temperature, its resistance is also with the temperature respective change; In sensor resistance voltage conversion circuit B, power supply+E voltage directly arrives ground through R6 and NTC thermistor, when enamel container sensor (thermistor) 5 change in resistance, and R
6The voltage at two ends is respective change also, and this voltage is through R
7Deliver to single-chip microcomputer C, single-chip microcomputer C judges food temperature according to built-in voltage/temperature data storehouse, control relay A, and by relay contact 6 break-make power supply V, thereby, change heating intensity..
As Fig. 2, Fig. 4, Fig. 5, shown in Figure 6, top grade of the present invention, low-grade any one heating process all is by total power Pmax, subtract power, three bringing-up sections of temperature maintenance constitute, and the conversion of different capacity is according to food security temperature (temperature that most of bacterium can not survive) t
3, the protein coagulation temperature t
4With the approaching warm t that boils
1Decide, promptly power P becomes with temperature t.Its accurate temperature automatically controlled method is as follows:
As shown in Figure 7:
1, top grade is provided with top grade and sets the required cooking time when starting working, the time countdown;
1) whether the temperature of saucepan heating with full power while detecting sensor is more than or equal to T1, be then to heat with small-power, as be not then continue heating with full power (when sensor temperature arrives T1 in the pot food temperature about 95 ℃, this moment relay being carried out break-make controls and reduces power, food temperature slowly is increased to boil, can reduce like this and boil over and cut down the consumption of energy, this grade is suitable for the many food infusions of bone quasi-mineral);
2) when the temperature of sensor be during more than or equal to T1, whether the temperature of saucepan small-power heating while detecting sensor is more than or equal to T2, be then to stop heating, as be not then continue small-power heating (when sensor temperature just arrives T2 in the pot food temperature temperature is looked the moisture ratio with oil content of food in the pot this moment about 105 ℃, sensor temperature can not arrive T2 when stewing soup generally speaking, and promptly food temperature can not raise in the time of 100 ℃ again in the pot);
3) when the temperature of sensor be during more than or equal to T2, whether saucepan stops to heat the temperature of while detecting sensor smaller or equal to T3, as be not continue to stop the heating, whether the temperature that is then heating with full power while detecting sensor is more than or equal to T2, so circulation, stop heating during more than or equal to T2, (this situation is just to occur when saucepan is used for the few cooking method of big water content of oil content such as fried, You is baked to heating with full power during smaller or equal to T3, food temperature is constant about 120 ℃, can reduce oil gasification like this, and prevent oil and food carbonization).
4) when the set cooking time covers, saucepan enters the insulation shelves automatically.
2, low grade is provided with low grade and sets the required cooking time when starting working, the time countdown;
1) whether the temperature of saucepan heating with full power while detecting sensor is then to heat with small-power more than or equal to T4, is not to continue total power; (when whether the temperature of sensor equals T4, food temperature is about 70 ℃ in this moment pot, and most bacterium can not survive under this temperature, and our small household appliances food insulation all is to maintain this temperature).
2) when the temperature of sensor be during more than or equal to T4, whether the saucepan small-power heating temperature of detecting sensor simultaneously is then to stop heating more than or equal to T5, as not being then to continue the small-power heating; (when the food temperature is 70 ℃ of left and right sides when the temperature of sensor arrives T4, reduce the power heating elongate food arrive degree more than 90 the time chien shih pot in food major part protein before solidifying, fully be dissolved in the soup)
3) when the temperature of sensor be during more than or equal to T5, whether saucepan stops to heat the temperature of while detecting sensor smaller or equal to T6, as be not continue to stop the heating, whether the temperature that is then heating with full power while detecting sensor is more than or equal to T5, so circulation, stop heating during more than or equal to T5, heating with full power during smaller or equal to T6.(when sensor temperature is circulated in T5, T6 repeatedly, food temperature tends to balance and maintains about 94 ℃ this moment temperature and look the moisture ratio with oil content of pot interior food in the pot, this temperature that maintains food can reduce in the food also coagulated protein not continue solidify, it is dissolved in the soup, guarantees the delicate flavour and the nutritive value of soup).
4) when the set cooking time covers, saucepan enters the insulation shelves automatically.
3, insulation shelves are provided with low grade and set required temperature retention time when starting working or the high and low set cooking time of shelves is covered when entering insulation the time countdown;
1) whether the temperature of saucepan heating with full power while detecting sensor is then to stop heating more than or equal to T7, is not to continue total power;
2) when the temperature of sensor be during more than or equal to T7, whether saucepan stops to heat the temperature of while detecting sensor smaller or equal to T8, be then heating with full power and simultaneously the detecting sensor temperature whether more than or equal to T7, so circulation, stop heating during more than or equal to T7, heating with full power during smaller or equal to T8.(when sensor temperature is circulated in T7, T8 repeatedly, food temperature tends to balance and maintains about 70 ℃ this moment temperature and look the moisture ratio with oil content of pot interior food in the pot, most bacterium can not survive under this temperature, and our small household appliances food insulation all is to maintain this temperature)
3) when set temperature retention time is covered, saucepan stops insulation automatically, replys holding state.It below is the contrast test of nutrition temperature control slow cooker and common slow cooker.
One, as shown in Figure 8, high-grade 2 liters of peanut oil contrast test (A
1Be the high-grade oily temperature time graph of nutrition temperature control slow cooker, B
1For the high-grade oily temperature time graph of common slow cooker-its mode of heating is a heating with full power always).
| A1 | B1 | |
| Time | Temperature ℃ | Temperature ℃ |
| 0:00 | 25 | 25 |
| 0:35 | 50 | 49.5 |
| 0:55 | 72 | 71 |
| 1:15 | 89 | 89 |
| 1:25 | 96 | 96 |
| 1;35 | 101 | 104 |
| 1:45 | 106 | 111 |
| 1:50 | 109 | 114 |
| 1:55 | 111 | 117 |
| 2:00 | 113 | 120 |
| 2:05 | 115 | 122 |
| 2:10 | 117 | 123 |
| 2:15 | 119 | 125 |
| 2:20 | 120.1 | 127 |
| 2:25 | 121 | 129 |
| 2:30 | 120 | 130 |
| 2:35 | 122 | 131 |
| 2:40 | 122.3 | 132 |
| 2:50 | 121 | 135 |
| 3:00 | 123 | 137 |
| 3:20 | 122 | 142 |
| 3:40 | 123 | 145 |
| 4:00 | 122 | 147 |
| 5:00 | 122 | 150 |
Among Fig. 8, be T1, heat with small-power at C point place's nutrition temperature control slow cooker sensor temperature; Circulate between T2 and T3 at D point back nutrition temperature control slow cooker sensor temperature, the control heater break-make makes the oil temperature constant.
Two, as shown in Figure 9, (A2 is the high-grade water temperature time graph of nutrition temperature control slow cooker, B to the water contrast test of high-grade 80% capacity
2For the high-grade water temperature time graph of common slow cooker-its mode of heating is a heating with full power always).
| A2 | B2 | |
| Time | Temperature ℃ | Temperature ℃ |
| 0:00 | 25 | 25 |
| 1:30 | 67 | 66 |
| 2:00 | 77 | 76 |
| 2:30 | 85 | 84.5 |
| 2:50 | 89.5 | 88.5 |
| 3:00 | 92 | 91.5 |
| 3:10 | 93.5 | 93.5 |
| 3:20 | 95 | 95 |
| 3:30 | 96 | 96 |
| 3:40 | 96.5 | 97 |
| 3:50 | 97 | 98 |
| 4:00 | 97.5 | 98.5 |
| 4:10 | 97.5 | 99 |
| 4:20 | 98 | 99.5 |
| 4:30 | 98 | 100 |
| 4:40 | 98.5 | 100 |
| 4:50 | 99 | 100 |
| 5:00 | 99 | 100 |
| 5:10 | 99.5 | 100 |
| 5:20 | 99.5 | 100 |
| 5:30 | 100 | 100 |
| 5:40 | 100 | 100 |
| 5:50 | 100 | 100 |
| 6:00 | 100 | 100 |
Among Fig. 9, be T1,, elongated 95 and spent that it is also energy-conservation to reduce the possibility of boiling over to the time of 100 degree with the small-power heating at E point place's nutrition temperature control slow cooker sensor temperature.
Three, as shown in figure 10, (A3 is the low-grade water temperature time graph of nutrition temperature control slow cooker, B to the water contrast test of low-grade 80% capacity
3For the low-grade water temperature time graph of common slow cooker-its mode of heating is to heat with fixing low-power always).
| A3 | B3 | |
| Time | Temperature ℃ | Temperature ℃ |
| 0:00 | 25 | 25 |
| 1:30 | 65 | 53 |
| 2:00 | 75 | 61 |
| 2:10 | 78.5 | 63.5 |
| 2:20 | 81 | 66 |
| 2:30 | 83.5 | 68 |
| 2:40 | 85 | 70 |
| 2:50 | 86.5 | 72 |
| 3:00 | 87.5 | 74 |
| 3:10 | 88.5 | 76 |
| 3:20 | 89.5 | 77.5 |
| 3:30 | 90.5 | 79 |
| 3:40 | 91 | 80.4 |
| 3:50 | 91.5 | 82 |
| 4:00 | 92 | 83 |
| 4:10 | 92.5 | 84 |
| 4:20 | 93 | 85.5 |
| 4:30 | 93.5 | 86.5 |
| 5:00 | 94 | 89 |
| 5:30 | 94.5 | 91 |
| 6:00 | 94 | 92 |
| 6:30 | 95 | 93 |
| 7:00 | 94 | 94 |
| 7:30 | 95 | 94.5 |
Claims (6)
1, nutrition temperature control slow cooker, it comprises the porcelain courage in a pot body, the pot body, the control circuit board on the pot body, it is characterized in that: also be provided with enamel container sensor, single-chip microcomputer, recloser, wherein, enamel container sensor is contained in porcelain courage bottom, it is connected with the input interface of single-chip microcomputer by sensor resistance, and the output interface of single-chip microcomputer is connected with recloser, and recloser connects power supply.
2, nutrition temperature control slow cooker according to claim 1, it is characterized in that: the model of described single-chip microcomputer is HT46R47.
3, nutrition temperature control slow cooker according to claim 1, it is characterized in that: described single-chip microcomputer comprises interior if peripheral sensor resistance voltage conversion circuit, this circuit comprises sensor thermistor, electric capacity, fixed resistance, wherein, thermistor is in parallel with electric capacity, connect with fixed resistance, its end is connected with power supply, and the other end is connected with the input interface of single-chip microcomputer by another resistance, electric capacity.
4, nutrition temperature control slow cooker according to claim 1, it is characterized in that: described recloser comprises relay or SCR control circuit.
5, the accurate temperature automatically controlled method that is used for the described nutrition temperature control of claim 1 slow cooker, it comprises top grade, low grade, insulation shelves is set, and it is characterized in that, also has following steps:
A, on top grade, set the required cooking time when starting working, the time countdown;
1) the saucepan heating with full power simultaneously the temperature of detecting sensor be then with the small-power heating whether more than or equal to T1, as not being then to continue heating with full power;
2) when the temperature of sensor be during more than or equal to T1, whether the saucepan small-power heating temperature of detecting sensor simultaneously is then to stop heating more than or equal to T2, as not being then to continue the small-power heating;
3) when the temperature of sensor be during more than or equal to T2, whether saucepan stops to heat the temperature of while detecting sensor smaller or equal to T3, as be not continue to stop the heating, whether the temperature that is then heating with full power while detecting sensor is more than or equal to T2, so circulation, stop heating during more than or equal to T2, heating with full power during smaller or equal to T3;
4) when the set cooking time covers, saucepan enters the insulation shelves automatically;
B, on low grade, set the required cooking time when starting working, the time countdown;
1) whether the temperature of saucepan heating with full power while detecting sensor is then to heat with small-power more than or equal to T4, is not to continue total power;
2) when the temperature of sensor be during more than or equal to T4, whether the saucepan small-power heating temperature of detecting sensor simultaneously is then to stop heating more than or equal to T5, as not being then to continue the small-power heating;
3) when the temperature of sensor be during more than or equal to T5, whether saucepan stops to heat the temperature of while detecting sensor smaller or equal to T6, as be not continue to stop the heating, whether the temperature that is then heating with full power while detecting sensor is more than or equal to T5, so circulation, stop heating during more than or equal to T5, heating with full power during smaller or equal to T6;
4) when the set cooking time covers, saucepan enters the insulation shelves automatically;
C, on insulation shelves, when setting required temperature retention time and starting working or the high and low set cooking time of shelves cover when entering insulation the time countdown;
1) whether the temperature of saucepan heating with full power while detecting sensor is then to stop heating more than or equal to T7, is not to continue total power;
2) when the temperature of sensor be during more than or equal to T7, whether saucepan stops to heat the temperature of while detecting sensor smaller or equal to T8, be then heating with full power and simultaneously the detecting sensor temperature whether more than or equal to T7, so circulation, stop heating during more than or equal to T7, heating with full power during smaller or equal to T8;
3) when set temperature retention time is covered, saucepan stops insulation automatically, replys holding state.
6, the accurate temperature automatically controlled method of nutrition temperature control slow cooker according to claim 1, it is characterized in that: described sensor temperature T8＜T7＜T4＜T6＜T5＜T1＜T3＜T2, wherein, T1 is 97 ℃, and T2 is 101 ℃, T3 is 98 ℃, T4 is 80 ℃, and T5 is 92 ℃, and T6 is 90 ℃, T7 is 72 ℃, and T8 is 70 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510079899 CN1891115A (en) | 2005-07-01 | 2005-07-01 | Temperature-controlled nutrient slow-stewing cook and its precision automatic temperature-controlling method |
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|---|---|---|---|
| CN 200510079899 CN1891115A (en) | 2005-07-01 | 2005-07-01 | Temperature-controlled nutrient slow-stewing cook and its precision automatic temperature-controlling method |
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| CN102048446B (en) * | 2010-09-10 | 2013-04-10 | 宁波福凯电子科技有限公司 | Slow cooker |
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| CN108291723A (en) * | 2015-11-16 | 2018-07-17 | 三星电子株式会社 | Cooking equipment and its control method |
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| CN107232964A (en) * | 2016-03-29 | 2017-10-10 | 九阳股份有限公司 | A kind of cooking apparatus with Analysis of Nutritive Composition function |
| CN107440470A (en) * | 2016-05-30 | 2017-12-08 | 佛山市顺德区美的电热电器制造有限公司 | A kind of cooking control method and device of domestic animal bone soup |
| CN107536482A (en) * | 2017-05-19 | 2018-01-05 | 浙江苏泊尔家电制造有限公司 | Method, cooking apparatus and the computer-readable storage medium of culinary art |
| CN107536482B (en) * | 2017-05-19 | 2020-08-25 | 浙江苏泊尔家电制造有限公司 | Cooking method, cooking appliance and computer storage medium |
| CN109549447A (en) * | 2017-09-25 | 2019-04-02 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooking pot and its slowly stewed control method, control device |
| CN109549447B (en) * | 2017-09-25 | 2021-01-19 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooker and slow stewing control method and control device thereof |
| CN108307553A (en) * | 2017-12-28 | 2018-07-20 | 浙江绍兴苏泊尔生活电器有限公司 | Heating control method and device, electric heating assembly and electric heating appliance |
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