Method for cooking porridge in plateau environment using IH electromagnetic heating rice cooker

Abstract

The present invention provides a method for cooking porridge in a plateau environment with an IH electromagnetic heating rice cooker, which specifically includes the following steps: S1, setting a plateau boiling test; S2, identifying the plateau environment, judging different plateau heights, and converting them into corresponding parameters; S3, dividing into multiple levels according to the data of identifying the plateau stage, and setting different heating control ratios according to different levels. The present invention solves the problem of an IH electromagnetic heating rice cooker without an upper cover temperature sensor, and can use a bottom temperature sensor and logical judgment to identify the plateau, thereby improving the effect of cooking porridge in the plateau, thereby reducing the cost of the product and ensuring that the porridge cooking function of the product can have a good effect in different environments such as plateaus and plains.

Description

Technical Field

[0001] The present invention relates to a control circuit, and particularly to a method for cooking porridge in a plateau environment with an IH electromagnetic heating rice cooker. Background Art

[0002] In the various computerized rice cookers sold on the market currently, during the process of cooking porridge or soup, the working control process generally includes an initial temperature detection stage, a heating control stage, a stop control stage, and a boiling control stage; by the length of the working time in the heating control stage, the level of the amount of rice and water in the pot is judged, and then a fixed heating power corresponding to the rice amount level is set in the boiling control stage for continuous heating to maintain the porridge or soup in a boiling state until the end of the porridge cooking process.

[0003] Cooking porridge is a cooking function that is extremely prone to overflow. Without being able to judge boiling, excessive heating will cause overflow. And it is even easier to overflow when cooking porridge in a plateau cooking environment. In the design of existing IH electromagnetic heating rice cooker products, 2 temperature sensors are installed. The upper cover temperature sensor is used to detect the steam temperature when boiling, and the bottom pot sensor is used to detect the temperature of the bottom of the inner pot for heating. Because of the bottom temperature sensor, affected by the bottom heating power, only the top temperature sensor can be used to detect the steam temperature to obtain the state of the plateau environment. However, the installation of the top temperature sensor is complex, and it is prone to failure, with high production costs and material costs. If the top temperature sensor is removed, and because of the temperature of the bottom temperature sensor, affected by heating, the plateau state cannot be recognized. Therefore, when cooking porridge on the plateau, if the user is slightly inattentive and does not open the lid in time, it will overflow. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention proposes a method for cooking porridge in a plateau environment with an IH electromagnetic heating rice cooker, which can adapt to the effect of cooking porridge in a plateau environment without installing an upper cover temperature sensor, with good porridge cooking effect and no overflow.

[0005] To achieve the above technical solution, the present invention provides a method for cooking porridge in a plateau environment with an IH electromagnetic heating rice cooker, including the following steps:

[0006] S1. Setting of plateau boiling test,

[0007] Place the IH electromagnetic heating rice cooker in a plateau environment, and set temperature points TEMP1 and TEMP2, where TEMP1 is the plateau boiling temperature of the IH electromagnetic heating rice cooker in the plateau environment, and TEMP1 < TEMP2. When the temperature of the bottom sensor is lower than TEMP1, start heating, and keep heating until TEMP2 and stop. After stopping heating, when the temperature drops to TEMP1, then start heating again until TEMP2 and stop. Repeat the above process. Judge to exit the loop heating after the stop time reaches the set value T, and enter the working process of the next step;

[0008] S2. Identify the plateau environment, determine the height of different plateaus, and convert them into corresponding parameters.

[0009] Set a fixed low-power gap heating for 2 minutes, and then record the temperature rise amplitude TEMP_err of the bottom sensor within this fixed time, and identify the plateau height based on the amplitude value;

[0010] S3. Based on the data of the plateau stage, multiple levels are divided, and different heating control ratios are set according to different levels.

[0011] Preferably, in step S1, during the cyclic heating process, the temperature values ​​of TEMP1 and TEMP2 are repeatedly adjusted so that the water temperature boils slowly in a plateau environment.

[0012] Preferably, in step S1, in the process of adjusting the temperature values ​​of TEMP1 and TEMP2, in the case of high-plateau boiling, the heating time is maintained at boiling for 30 seconds and then stopped, and after stopping, it is necessary to wait until the foam is completely digested before the next heating can be carried out.

[0013] Preferably, the temperature points TEMP1 and TEMP2 are set within a range of 83 degrees Celsius to 93 degrees Celsius.

[0014] Preferably, in step S2, the plateau height can be found out through the temperature rise amplitude TEMP_err and the corresponding barometer, and the smaller the TEMP_err, the higher the plateau environment.

[0015] Preferably, in step S3, the higher the altitude of the plateau, the lower the boiling point, and the smaller the boiling heating control ratio; conversely, the lower the altitude of the plateau, the higher the boiling point, and the larger the boiling heating control ratio.

[0016] The beneficial effect of the method for cooking porridge in a plateau environment of an IH electromagnetic heating rice cooker provided by the present invention is that: the present invention solves the problem of an IH electromagnetic heating rice cooker without an upper cover temperature sensor, and can use a bottom temperature sensor to identify the plateau by logical judgment, improve the effect of cooking porridge in the plateau, reduce the cost of the product, and ensure that the porridge cooking function of the product in different environments such as plateaus and plains can have good effects. The present invention does not use an upper cover temperature sensor to detect the plateau porridge cooking state, but uses a bottom temperature sensor. When the bottom temperature sensor reaches the set TEMP1 to TEMP2 interval, it is heated by a fixed interval of 2 minutes, and then the highest and lowest values ​​of the bottom temperature sensor are calculated. The difference between the highest and lowest values ​​of the temperature in this interval is used, and the difference between the plateau porridge cooking state and the plain porridge cooking state is distinguished by a logical judgment method (the basis and law of logical judgment: the higher the altitude of the plateau, the smaller the temperature difference in this interval), and the porridge cooking effect is good and will not overflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a logic flow chart of the present invention.

[0018] Figure 2 It is a schematic diagram of using Tstop to determine the exit of cyclic heating in an embodiment of the present invention.

[0019] Figure 3 This is the non-overflow warming curve at an altitude of 2,000 meters on the plateau.

[0020] Figure 4 This is the temperature rise curve of the bottom sensor TEMP_err under the condition of boiling without overflow in a standard atmospheric pressure environment.

[0021] Figure 5 The TEMP_err temperature rise curve of the bottom sensor at an altitude of 2 kilometers on the plateau without overflow. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary persons in the art without creative work are within the scope of protection of the present invention.

[0023] Embodiment: A method for cooking porridge in a plateau environment using an IH electromagnetic heating rice cooker.

[0024] Reference Figures 1 to 5 As shown, a method for cooking porridge in a plateau environment with an IH electromagnetic heating rice cooker is intended to solve the problem of an IH electromagnetic heating rice cooker without an upper cover temperature sensor. The bottom temperature sensor can be used to identify the plateau using logical judgment to improve the effect of cooking porridge in the plateau, thereby reducing the cost of the product and ensuring that the product can achieve good results when used in plateaus and plains. In order to realize the logic of cooking porridge in a plateau environment, the present invention is divided into three key stages: plateau boiling, identifying the plateau environment, and maintaining boiling. The method for cooking porridge in a plateau environment with an IH electromagnetic heating rice cooker of the present invention mainly includes the following steps:

[0025] S1. Setting of plateau boiling test. The goal of this stage is to achieve plateau boiling:

[0026] S11, placing the IH electromagnetic heating rice cooker in a plateau environment, setting temperature points TEMP1 and TEMP2, wherein TEMP1 is the plateau boiling temperature of the IH electromagnetic heating rice cooker in a plateau environment, and TEMP1 <TEMP2;

[0027] S12, when the bottom sensor temperature is lower than TEMP1, it starts heating and continues heating until TEMP2 stops;

[0028] S13, after stopping heating, the temperature drops to TEMP1, and heating is started again;

[0029] S14, cycle the heating process of S12 and S13, and calculate the time length Tstop from each heating stop to the next heating start, and set the time threshold T. If Tstop≥T, then exit the cycle heating and enter the next step of the working process; Figure 2 Said: the time threshold T is set to 75 seconds. During the cycle heating process, when Tstop≥75 seconds occurs, the cycle heating will be exited.

[0030] As the water temperature rises, the time of each heating becomes shorter and shorter, and the stop time becomes longer and longer. Because this step is aimed at plateau boiling, it is necessary to repeatedly adjust the TEMP1 and TEMP2 temperature values ​​so that the water temperature boils slowly in a plateau environment, and to facilitate defoaming during the heating to stop process. Defoaming means adjusting the temperature difference between TEMP1 and TEMP2 so that in the case of plateau boiling, the heating time is maintained at boiling for 10-60 seconds and then stops. When stopping, it is necessary to wait for the foam to be completely digested before the next heating. The heating time of 10-60 seconds to maintain boiling is not fixed, and it is related to the speed of water temperature rise. The slower the water temperature rises, the longer the heating time. The faster the water temperature rises, the shorter the heating time. For example, heating starts when the sensor temperature is ≤TEMP1 and stops when it reaches TEMP2; as the water temperature rises, the heating speed also increases, and the heating time becomes shorter each time;

[0031] S15, in the above cycle process, after judging that the stop time reaches the set value T, the cycle heating is exited and the working process of the next step is entered. At this time, the porridge in the plateau environment has boiled, but it has not boiled in the standard atmospheric pressure environment. The experimental curve of this stage is as follows Figure 2 As shown. Figure 2 It can be seen that in order to maintain a non-overflow boiling state at an altitude of 2 kilometers on the plateau, the temperature points TEMP1 and TEMP2 should be set within the range of 83 degrees Celsius to 93 degrees Celsius. In actual operation, parameters will also be adjusted according to different sensor structures. For example, if there is a negative deviation in the structure, it will be set in the range of 85℃-95℃.

[0032] S2, identify the plateau environment. This stage is to determine the height of different plateaus and convert them into corresponding parameters:

[0033] S21. We sorted out the data and found that there is a characteristic of cooking porridge: when heating at a fixed low power, the sensor temperature changes very little when boiling; but when it has not yet boiled, there is still room for the temperature to rise, and the corresponding sensor temperature will also rise significantly;

[0034] S22. Based on this feature, set a fixed low-power gap heating for 2 minutes, and then record the temperature rise amplitude TEMP_err of the bottom sensor within this fixed time. According to this amplitude value, the plateau can be identified. The height of the plateau can be found through the temperature rise amplitude TEMP_err and the corresponding barometer. The smaller the TEMP_err, the higher the plateau environment. For example: Figure 3 The ambient temperature under standard atmospheric pressure rises from 83 degrees to 89 degrees, a temperature rise of 6 degrees. The TEMP_err value is 6. Figure 4 At 2 km on the plateau, the temperature rises from 86 degrees to 87 degrees, a 1 degree rise. The TEMP_err value is 1. So the program can set a level table based on this difference:

[0035] grade 1 2 3 4 5 6 7 8 9 10 TEMP_err 0 1 2 3 4 5 6 7 8 9

[0036] The above-mentioned TEMP_err value of 2 kilometers on the plateau is 1, corresponding to level 2; the TEMP_err value of the standard atmospheric pressure environment is 6, corresponding to level 7.

[0037] The temperature rise curve of the bottom sensor TEMP_err in the standard atmospheric pressure environment without overflow is as follows: Figure 4 As shown in the figure, the temperature rise curve of the bottom sensor TEMP_err at an altitude of 2 km without overflow is as follows: Figure 5 As shown in the figure above, the comparison of the two figures shows that after the plateau reaches boiling, the sensor temperature changes very little under the action of fixed low-power heating for 2 minutes. In the non-plateau case, because it is far from boiling, its temperature continues to rise. Therefore, the smaller the temperature difference, the higher the plateau environment it is in.

[0038] S3, maintain boiling

[0039] S31. According to the data of the plateau stage, multiple levels are divided, and different heating control ratios are set according to different levels. In actual operation, based on the level table obtained in step S2, corresponding heating control ratios can be set according to different levels, as follows:

[0040]

[0041] The heating control ratio can be adjusted according to different rice cooker structures and cooking effects.

[0042] S32. The higher the plateau, the lower the boiling point, and the smaller the boiling heating control ratio; conversely, the lower the plateau, the higher the boiling point, and the larger the boiling heating control ratio.

[0043] The key point of the present invention is that the IH electromagnetic heating rice cooker does not use an upper cover temperature sensor to detect the plateau porridge cooking state, but uses a bottom temperature sensor. When the bottom temperature sensor reaches the set TEMP1 to TEMP2 interval, it is heated at a fixed interval of 2 minutes, and then the highest value and the lowest value of the bottom temperature sensor are calculated. The difference between the highest value and the lowest value of the temperature in this interval is used to distinguish the difference between the plateau porridge cooking state and the plain porridge cooking state through a logical judgment method (the basis and rule of logical judgment: the higher the altitude of the plateau, the smaller the temperature difference in this interval). There is no need to install an upper cover temperature sensor, and the porridge cooking effect can be adapted to the plateau environment. The porridge cooking effect is good and will not overflow. The product structure can be simplified and the product cost can be reduced without affecting the product performance.

[0044] The above description is only a preferred embodiment of the present invention, but the present invention should not be limited to the contents disclosed in the embodiment and the drawings, so any equivalent or modification completed without departing from the spirit disclosed in the present invention shall fall within the scope of protection of the present invention.

Claims

1. A method for cooking porridge in a plateau environment using an IH electromagnetic heating rice cooker, characterized in that The steps are as follows: S1. Setting for plateau boiling test Place the IH electromagnetic heating rice cooker in a plateau environment, and set temperature points TEMP1 and TEMP2, where TEMP1 is the plateau boiling temperature of the IH electromagnetic heating rice cooker in the plateau environment, and TEMP1 < TEMP2. Start heating when the temperature of the bottom sensor is lower than TEMP1, and keep heating until TEMP2, then stop. After stopping heating, the temperature drops to TEMP1, and then start heating again until TEMP2 and then stop. Repeat the above process, and calculate the time length Tstop from each stop of heating to the next start of heating. Set a time threshold T. If Tstop ≥ T, then exit the cycle heating and enter the working process of the next step; S2. Identifying the plateau environment, judging different plateau heights, and converting them into corresponding parameters Set a fixed low-power intermittent heating for 2 minutes, and then record the amplitude value TEMP_err of the temperature rise of the bottom sensor within this fixed time. Identify the plateau height according to this amplitude value; S3. Divide into multiple levels according to the data in the plateau identification stage, and set different heating regulation ratios according to different levels. The higher the plateau altitude, the lower the boiling point, and the smaller the heating regulation ratio for maintaining boiling; on the contrary, the lower the plateau altitude, the higher the boiling point, and the larger the heating regulation ratio for maintaining boiling.

2. The method for cooking porridge in a plateau environment using an IH electromagnetic heating rice cooker as claimed in claim 1, characterized in that: In the step S1, during the cycle heating process, repeatedly adjust the temperature values of TEMP1 and TEMP2 to make the water boil slowly in the plateau environment.

3. The method for cooking porridge in a plateau environment using an IH electromagnetic heating rice cooker as claimed in claim 2, characterized in that: In the step S1, during the process of adjusting the temperature values of TEMP1 and TEMP2, when boiling on the plateau, stop heating after maintaining boiling for 10 - 60 seconds, and wait until the foam is completely digested before the next heating.

4. The method for cooking porridge in a plateau environment using an IH electromagnetic heating rice cooker as claimed in claim 1, characterized in that: The temperature points TEMP1 and TEMP2 are set within the range of 83 °C to 93 °C.

5. The method for cooking porridge in a plateau environment using an IH electromagnetic heating rice cooker as claimed in claim 1, characterized in that: In the step S2, the plateau height can be found through the amplitude value TEMP_err of the temperature rise and the corresponding barometer. The smaller TEMP_err is, the higher the plateau is.

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