Boiling determination method, device, system, readable storage medium and electric rice cooker

Abstract

The application provides a boiling determination method and device, system, readable storage medium and electric rice cooker, wherein the boiling determination method comprises the following steps: obtaining a first slope of temperature rise of a cover body in a first time length; obtaining a second slope of temperature rise of the cover body in a second time length; and determining whether liquid in a container is boiling according to a relationship between the first slope and the second slope and a relationship between the second slope and a preset slope range. Compared with a traditional method of determining whether liquid is boiling by detecting water vapor temperature, the method used in the application avoids the problem of different boiling points caused by different altitudes, improves the accuracy of boiling state determination, can more accurately control the cooking process, improves the safety of the cooking utensil, and makes the food taste better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooking utensils, in particular to a boiling determination method, a boiling determination device, a boiling determination system, a readable storage medium and an electric rice cooker. BACKGROUND

[0002] The electric rice cooker in the prior art is usually determined to boil by detecting the temperature of water vapor, when the water vapor temperature reaches the boiling point temperature, but due to the different boiling points of water in different altitudes, this boiling point determination method will lead to inaccurate judgment of the boiling point. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art or related art.

[0004] To this end, the first object of the present application is to provide a boiling determination method.

[0005] The second object of the present application is to provide a boiling determination device.

[0006] The third object of the present application is to provide a boiling determination device.

[0007] The fourth object of the present application is to provide a boiling determination system.

[0008] The fifth object of the present application is to provide a readable storage medium.

[0009] The sixth object of the present application is to provide an electric rice cooker.

[0010] In order to achieve at least one of the above objects, according to the first aspect of the present application, a boiling determination method is provided for a cooking utensil, including a container and a cover body provided on the container, comprising: obtaining a first slope of temperature rise of the cover body within a first time length; obtaining a second slope of temperature rise of the cover body within a second time length; determining whether the liquid in the container is boiling according to the relationship between the first slope and the second slope, and the relationship between the second slope and a preset slope range.

[0011] The boiling determination method provided in the present application is used for a cooking utensil. Specifically, the cooking utensil includes a container for holding food materials to be cooked. The container is further provided with a cover body which is openably arranged above the container. In the state that the cooking utensil is not cooking, the cover body can be opened to put the food materials to be cooked into the container or take out the cooked food materials from the container. During the cooking process of the cooking utensil, the cover body is closed to seal the container. The cover body of the cooking utensil is provided with a temperature detection device which can detect the temperature of the cover body.

[0012] The food material to be cooked is a solid-liquid mixture. Understandably, during the cooking of the food material, the liquid is constantly converted into high-temperature steam as the food material is heated, thereby causing the temperature inside the container to constantly increase until the liquid boils. When the liquid is in a boiling state, the temperature of the liquid no longer increases after reaching the boiling point, and the rate of increase of the temperature inside the container slows down. Therefore, the boiling state of the liquid can be determined by the rate of increase of the temperature inside the pot over different time periods.

[0013] The cover is in contact with the high-temperature steam inside the container, and the rate of increase of the temperature of the cover tends to be consistent with the rate of increase of the temperature of the liquid inside the container. Therefore, the boiling state of the liquid can be determined by the rate of increase of the temperature of the cover.

[0014] Specifically, a first slope of the temperature increase of the cover over a first time period is first obtained.

[0015] Understandably, when the cooking appliance heats the food material inside the container, the temperature of the liquid constantly increases, thereby causing the temperature inside the container to correspondingly increase, and the rate of temperature increase of the cover tends to be the same as that of the liquid. In the first time period, a first slope of the temperature increase of the cover is obtained, wherein the first slope directly reflects the rate of temperature increase of the cover in the first time period, and further reflects the rate of temperature increase of the liquid inside the container in the first time period.

[0016] After obtaining the first slope, a second slope of the temperature increase of the cover over a second time period is obtained.

[0017] Specifically, after the first time period ends, the timing is restarted until the second time period is reached, and a second slope of the temperature increase of the cover over this time period is obtained.

[0018] Further, since the first slope and the second slope respectively reflect different rates of temperature increase of the cover over different time periods, the sum of the first slope and the correction coefficient is compared with the second slope, and the second slope is compared with a preset slope range, and the boiling state of the liquid can be determined according to the relationship between the above data.

[0019] The first slope and the second slope respectively reflect the rate of temperature increase of the cover in the first time period and the second time period, i.e., the rate of temperature increase of the liquid inside the container in the first time period and the second time period. Understandably, the greater the slope, the faster the rate of temperature increase, and in the state of boiling of the liquid, since the temperature of the liquid reaches the boiling point and no longer increases, at this time, the temperature of the cover also tends to remain stable, and the rate of temperature increase slows down. By comparing the sum of the first slope and the correction coefficient with the second slope, according to the size relationship between the sum of the first slope and the correction coefficient and the second slope, it can be determined whether the liquid inside the container is currently boiling.

[0020] The temperature detection device arranged in the cover body detects the temperature of the cover body, and the temperature of the cover body reflects the temperature of the liquid in the container. It can be understood that different cover body settings will have different effects on the detection result, therefore, a correction coefficient is needed to be added to the first slope to correct the first slope and improve the accuracy of the judgment. Specifically, different correction coefficients can be set according to different cooking devices.

[0021] Further, in the state that the liquid is close to boiling but not boiling, the temperature rising speed of the liquid has already begun to slow down, and as the temperature of the liquid rises to the boiling point, the temperature rising speed of the liquid continuously decreases until it remains stable. Therefore, the value range of the second slope needs to be limited to avoid judging the liquid close to boiling as boiling state and prevent misjudgment.

[0022] The application compares the slopes of the cover body temperature rising in different time periods, which can determine the temperature rising speed of the liquid in the container in different time periods through the slopes, and then determine whether the liquid in the container is boiling according to the comparison result of the two slopes and whether the second slope is in the preset slope range. Compared with the traditional way of determining whether the liquid is boiling by detecting the water vapor temperature, this way avoids the problem of different boiling points caused by different altitudes, improves the accuracy of determining the boiling state, can more accurately control the cooking process, improves the safety of the cooking utensil, and makes the taste of food better.

[0023] According to the boiling determination method described above, the following additional technical features can be provided:

[0024] In the above technical solution, further, according to the relationship between the first slope and the second slope, and the relationship between the two slopes and the preset slope range, it is determined whether the liquid in the container is boiling, comprising: based on the second slope being less than the sum of the first slope and the correction coefficient, and the second slope being in the preset slope range, it is determined that the liquid in the container is boiling.

[0025] In this technical solution, the size relationship between the first slope and the second slope is first determined. It can be understood that the slope reflects the temperature rising speed of the cover body in a period of time, and further reflects the temperature rising speed of the liquid in the container in a period of time. In a period of time, the greater the slope, the faster the temperature rising speed. In the case that the second slope is less than the sum of the first slope and the correction coefficient, it means that the temperature rising speed of the liquid in the container slows down in the second time period compared with the temperature rising speed of the liquid in the container in the first time period. At this time, the liquid is close to the boiling state.

[0026] In order to further determine whether the liquid is in a boiling state or a state close to boiling, on the basis of satisfying the condition that the second slope is less than the sum of the first slope and the correction coefficient, the second slope is compared with a preset slope range to determine whether the second slope is within the preset slope range. Specifically, the temperature rising speed of the liquid is different when the liquid is close to the boiling state and when the liquid is in the boiling state, and the slopes are also different. When the liquid is in the boiling state, the temperature rising slope of the cover is less than the temperature rising slope of the cover when the liquid is close to the boiling state. By limiting the second slope within the preset slope range, misjudgment of the boiling state can be avoided.

[0027] The second slope is compared with the sum of the first slope and the correction coefficient in the application, and the liquid in the container is determined to be boiling when the second slope is less than the sum of the first slope and the correction coefficient and the second slope is within the preset slope range. By reflecting the temperature rising speed of the liquid through the slope, the accuracy of determining the boiling state is improved.

[0028] In the above technical solution, further, the relationship between the first slope and the second slope, and the relationship between the second slope and the preset slope range are used to determine whether the liquid in the container is boiling, which further includes: based on the second slope being greater than or equal to the sum of the first slope and the correction coefficient, or based on the second slope being less than the sum of the first slope and the correction coefficient and the second slope being outside the preset slope range, it is determined that the liquid in the container is not boiling.

[0029] In this technical solution, first, the size relationship between the first slope and the second slope is judged. If the liquid in the container has not reached the boiling state, there are two cases. First, the liquid is in the initial and middle stages of heating, at which time the temperature rising speed of the liquid gradually increases. Second, the liquid is in the final stage of heating, at which time the liquid temperature is high and close to the boiling state, and the temperature rising speed of the liquid gradually decreases but still rises at a certain speed.

[0030] Based on the above situation, the application determines that the liquid in the container is not boiling when the following two states are detected. Specifically, in the case where the second slope is greater than or equal to the sum of the first slope and the correction coefficient, or in the case where the second slope is less than the sum of the first slope and the correction coefficient and the second slope is outside the preset slope range, it is determined that the liquid in the container is not boiling.

[0031] It can be understood that, in the case that the second slope is greater than or equal to the sum of the first slope and the correction coefficient, it indicates that the temperature rising speed of the liquid is still accelerating, at this time, the liquid is in the initial or middle stage of heating, and obviously, the liquid has not reached the boiling state. In the case that the second slope is less than the sum of the first slope and the correction coefficient, it indicates that the temperature rising speed of the liquid has begun to slow down, at this time, the liquid is in the final stage of heating or has reached the boiling stage. In order to further determine whether the liquid is boiling, the second slope needs to be compared with the preset slope range. The preset slope range is the slope range of the temperature rising of the liquid in the boiling state. If the second slope is outside the preset slope range, it indicates that at this time, the liquid has entered the final stage of heating, but has not reached the boiling state.

[0032] The present application compares the second slope with the sum of the first slope and the correction coefficient, and determines that the liquid in the container has not reached the boiling state in the case that the second slope is greater than or equal to the sum of the first slope and the correction coefficient, or in the case that the second slope is less than the sum of the first slope and the correction coefficient and the second slope is outside the preset slope range. By comparing the temperature rising slopes in different stages to determine whether the liquid has reached the boiling state, and further comparing the second slope with the preset slope range, the accuracy of determining the boiling state is improved.

[0033] In the above technical solution, further, the cooking appliance comprises a heating member, and before the first slope of the temperature rising of the cover body in the first time length is acquired, the heating member is further controlled to be turned on for a third time length.

[0034] In the technical solution, the cooking appliance further comprises a heating member for heating the food material in the container. Before the first slope of the temperature rising of the cover body in the first time length is acquired, the heating member is further controlled to be turned on for a third time length.

[0035] Specifically, after the cooking appliance is started, the heating member is started to heat the food material in the container. In the initial stage of starting the heating member, because the temperature of the food material and the temperature in the container are low, the temperature change of the cover body is small. At this time, if the temperature of the cover body is detected and the temperature rising slope in a period of time is determined according to the detection result, the obtained temperature rising slope value is small. Because the temperature measurement result is prone to have a certain error, the smaller the temperature rising slope value is, the greater the influence of the measurement error on the slope is. Therefore, if the temperature of the cover body is detected and the temperature rising slope is acquired at the beginning of heating, the obtained slope is prone to be inaccurate, which further affects the judgment result.

[0036] In order to avoid the above problems, after the cooking appliance is started, the heating member is controlled to be turned on for a third time length, the container is heated for a period of time, and then the temperature rising slope of the cover body is acquired, so as to reduce the detection error.

[0037] The application controls the heating element to be turned on for a third time length before obtaining the first slope of the temperature rise of the cover body in a first time length, and the container is heated for a period of time, and then the first slope is obtained. Through the above method, the temperature detection error can be reduced, and then the influence of the detection error on the first slope value is reduced, the accuracy of the obtained first slope is improved, and the control accuracy is improved.

[0038] In the above technical solution, further, the first slope of the temperature rise of the cover body in the first time length is obtained, and the second slope of the temperature rise of the cover body in the second time length is obtained, specifically comprising: obtaining the first temperature of the cover body; obtaining the second temperature of the cover body after the first time length; determining the first slope according to the quotient of the difference between the first temperature and the second temperature and the first time length; obtaining the third temperature of the cover body after the second time length; determining the second slope according to the quotient of the difference between the second temperature and the third temperature and the second time length.

[0039] In the above technical solution, further, the first slope of the temperature rise of the cover body in the first time length is obtained, and the second slope of the temperature rise of the cover body in the second time length is obtained, specifically comprising: obtaining the first temperature of the cover body; obtaining the second temperature of the cover body after the first time length; determining the first slope according to the quotient of the difference between the first temperature and the second temperature and the first time length; obtaining the third temperature of the cover body after the second time length; determining the second slope according to the quotient of the difference between the second temperature and the third temperature and the second time length.

[0040] Specifically, first, the temperature of the cover body is detected to obtain the first temperature T1 of the cover body, and then timing is started, and after the first time length t1, the temperature of the cover body is detected again to obtain the second temperature T2 of the cover body. After determining the first temperature T1, the second temperature T2 and the first time length t1, the first slope K1 can be determined by a slope calculation formula. Specifically, the first slope is determined according to the quotient of the difference between the first temperature and the second temperature and the first time length, that is, the first temperature T1, the second temperature T2 and the first time length t1 satisfy the following formula:

[0041] K1=(T2-T1) / t1

[0042] After determining the first slope, the third temperature of the cover body is obtained after the second time length, and the second slope is determined according to the quotient of the difference between the second temperature and the third temperature and the second time length.

[0043] Specifically, after determining the first slope, timing is started, and after the second time length t2, the temperature of the cover body is detected again to obtain the third temperature T3 of the cover body. The second slope K2 can be determined by a slope calculation formula according to the second temperature T2, the third temperature T3 and the second time length t2. Specifically, the second slope is determined according to the quotient of the difference between the second temperature and the third temperature and the second time length, that is, the second temperature T2, the third temperature T3 and the second time length t2 satisfy the following formula:

[0044] K2=(T3-T2) / t2

[0045] The temperature of the cover is measured at different time periods, and each temperature rising slope is determined according to a quotient of a temperature difference between different time points and a corresponding time length, and the temperature rising slope reflects a temperature change trend of the cover at different time periods, so that whether the liquid in the container is boiling is determined by comparing the temperature rising slopes at different time periods.

[0046] In the technical solution, after determining that the liquid in the container is not boiling, the boiling determination method further comprises: updating the second slope; and determining whether the liquid in the container is boiling according to a relationship between the first slope and the updated second slope and a relationship between the updated second slope and the preset slope range.

[0047] In the technical solution, after determining that the liquid in the container is not boiling, the temperature of the cover continues to be detected, and a new second slope is obtained to update the original second slope. It can be understood that, in the case of determining that the liquid is not boiling, the state of the liquid needs to be monitored continuously, so as to ensure that the liquid has boiled can be determined accurately and timely. In the case of determining that the original second slope does not meet the liquid boiling condition, a new second slope is obtained and the original second slope is updated, so as to realize continuous monitoring of the liquid in the container.

[0048] After updating the second slope, whether the liquid in the container is boiling is determined according to a relationship between the first slope and the updated second slope and a relationship between the updated second slope and the preset slope range.

[0049] Specifically, in the case that the updated second slope is less than a sum of the first slope and the correction coefficient and the updated second slope is within the preset slope range, it is determined that the liquid in the container is boiling. In the case that the updated second slope is greater than or equal to the sum of the first slope and the correction coefficient, or the updated second slope is less than the sum of the first slope and the correction coefficient and the updated second slope is outside the preset slope range, it is determined that the liquid in the container is not boiling.

[0050] By updating the second slope after determining that the liquid in the container is not boiling, and determining whether the liquid in the container is boiling again according to a relationship between the first slope and the updated second slope and a relationship between the updated second slope and the preset slope range, continuous monitoring of the liquid in the container is realized, so as to ensure that the liquid has boiled can be determined accurately and timely.

[0051] In the technical solution, further, the second slope is updated, specifically comprising: obtaining a fourth temperature of the cover after a second time length; and updating the second slope according to a quotient of a difference between the fourth temperature and the third temperature and the second time length.

[0052] In the technical solution, the method for updating the second slope is specifically as follows:

[0053] Firstly, a fourth temperature of the cover is obtained after a second time duration.

[0054] Specifically, after determining that the liquid in the container is not boiling, the temperature of the cover is detected again after a second time duration t2, and a fourth temperature T4 of the cover is obtained. A new second slope K2' can be determined according to the third temperature T3, the fourth temperature T4 and the second time duration t2 by a slope calculation formula. Specifically, the second slope is updated according to the quotient of the difference between the fourth temperature and the third temperature and the second time duration, that is, the fourth temperature T4, the third temperature T3 and the second time duration t2 satisfy the following formula:

[0055] K2' = (T4-T3) / t2

[0056] Further, this step can be repeatedly executed for multiple cycles until the liquid boils.

[0057] By re-detecting the temperature of the cover under the condition that it is determined that the liquid in the container is not boiling, and determining a new second slope according to the new detection temperature and the last detection temperature of the last stage, the continuous monitoring of the liquid is realized, so that the liquid has boiled can be accurately and timely determined.

[0058] The second aspect of the present application also provides a boiling determination device, comprising: a memory for storing programs or instructions; a processor for executing programs or instructions to realize the steps of the boiling determination method as proposed in the first aspect of the present application.

[0059] The boiling determination device proposed in the present application comprises a memory and a processor. The memory is used to store programs or instructions, and the processor calls the programs or instructions stored in the memory and executes the corresponding programs or instructions to realize the steps of the boiling determination method proposed in the first aspect of the present application, thereby realizing the control of the cooking utensil.

[0060] The boiling determination device provided in the second aspect of the present application can realize all the steps of the boiling determination method proposed in the first aspect of the present application, and therefore has all the beneficial effects of the boiling determination method.

[0061] The third aspect of the present application also provides a boiling determination device, comprising: an acquisition module for acquiring a first slope of temperature rise of the cover within a first time duration and a second slope of temperature rise of the cover within a second time duration; a determination module for determining whether to boil according to the relationship between the first slope and the second slope, and the relationship between the second slope and a preset slope range.

[0062] The boiling determination device proposed in the present application comprises an acquisition module and a determination module. The acquisition module is used to acquire a first slope of temperature rise of the cover within a first time duration and a second slope of temperature rise of the cover within a second time duration.

[0063] Specifically, when the cooking utensil heats the food material in the container, the temperature of the liquid is constantly rising, so that the temperature in the container is correspondingly increased, and the temperature rising speed of the cover tends to be the same as that of the liquid. The first slope of the temperature rise of the cover in the first time length directly reflects the temperature rising speed of the cover in the first time length, and further reflects the temperature rising speed of the liquid in the container in the first time length. In the second time length after the end of the first time length, the temperature of the cover continues to rise, and after the end of the first time length, the timing is restarted until the second time length is reached, and the second slope of the temperature rise of the cover in the second time length is obtained.

[0064] After obtaining the first slope and the second slope of the temperature rise of the cover in the two different time periods, it can be determined whether the liquid in the container is boiling according to the relationship between the first slope and the second slope. Specifically, the determination module in the boiling determination device is configured to determine whether boiling occurs according to the relationship between the first slope and the second slope, and the relationship between the second slope and the preset slope range.

[0065] The first slope and the second slope respectively reflect the temperature rising speed of the cover in the first time length and the second time length, i.e., the temperature rising speed of the liquid in the container in the first time length and the second time length. It can be understood that the greater the slope, the faster the temperature rising speed, and in the state of boiling, the temperature of the liquid reaches the boiling point and no longer rises, at this time, the temperature of the cover tends to be stable, and the temperature rising speed slows down. By comparing the sum of the first slope and the correction coefficient with the second slope, according to the size relationship between the sum of the first slope and the correction coefficient and the second slope, it can be determined whether the liquid in the container is currently boiling.

[0066] The present application detects the temperature of the cover through the temperature detection device arranged in the cover, and reflects the temperature of the liquid in the container through the temperature of the cover. It can be understood that different cover settings will have different effects on the detection results, therefore, it is necessary to set a correction coefficient, add the correction coefficient to the first slope, and correct the first slope to improve the accuracy of the judgment. Specifically, different correction coefficients can be set according to different cooking devices.

[0067] Further, in the state that the liquid is close to boiling but not boiling, the temperature rising speed of the liquid has already begun to slow down, and as the temperature of the liquid rises to the boiling point, the temperature rising speed of the liquid continuously decreases until it remains stable. Therefore, it is necessary to limit the value range of the second slope to avoid judging the liquid close to boiling as boiling state, and prevent misjudgment.

[0068] The application can obtain the first slope and the second slope of the temperature rise of the cover in different time periods through the setting of the obtaining module and the determining module in the boiling determination device, and determine whether boiling occurs according to the relationship between the first slope and the second slope and the relationship between the second slope and the preset slope range. Compared with the traditional method of determining whether the liquid boils by detecting the water vapor temperature, the boiling determination device provided by the application avoids the problem of different boiling points caused by different altitudes, improves the accuracy of the boiling state determination, can more accurately control the cooking process, improves the safety of the cooking utensil, and makes the food taste better.

[0069] The boiling determination device provided by the application can further have the following additional technical features.

[0070] In the above technical solution, further, the determining module is further configured to determine that the liquid in the container is boiling based on that the second slope is less than the sum of the first slope and the correction coefficient and the second slope is within the preset slope range.

[0071] In the technical solution, the determining module is further configured to perform the following functions. First, the size relationship between the first slope and the second slope is determined. It can be understood that the slope reflects the temperature rise speed of the cover in a period of time, and further reflects the temperature rise speed of the liquid in the container in a period of time. In a period of time, the greater the slope, the faster the temperature rise speed. In the case that the second slope is less than the sum of the first slope and the correction coefficient, it is indicated that the temperature rise speed of the liquid in the container in the second time period is slower than that in the first time period, and at this time, the liquid is close to the boiling state.

[0072] In order to further determine whether the liquid is in the boiling state or is about to boil, on the basis of meeting the condition that the second slope is less than the sum of the first slope and the correction coefficient, the second slope is compared with the preset slope range to determine whether the second slope is within the preset slope range. Specifically, the temperature rise speeds of the liquid in the close-to-boiling state and the liquid in the boiling state are different, and the slopes are also different. When the liquid is in the boiling state, the temperature rise slope of the cover is less than that in the close-to-boiling state. By limiting the second slope within the preset slope range, the misjudgment of the boiling state can be avoided.

[0073] By making the determining module compare the size of the second slope with the sum of the first slope and the correction coefficient, and determining that the liquid in the container is boiling when the second slope is less than the sum of the first slope and the correction coefficient and the second slope is within the preset slope range, the temperature rise speed of the liquid is reflected by the slope, and the accuracy of the boiling state determination is improved.

[0074] In the technical solution, the determining module is further configured to determine that the liquid in the container is not boiling based on that the second slope is greater than or equal to the sum of the first slope and the correction coefficient, or based on that the second slope is less than the sum of the first slope and the correction coefficient and the second slope is outside the preset slope range.

[0075] In the technical solution, the determining module is further configured to perform the following functions. First, the size relationship between the first slope and the second slope is determined. If the liquid in the container does not reach the boiling state, there are two cases. First, the liquid is in the initial and middle stages of heating, and the temperature rising speed of the liquid gradually increases. Second, the liquid is in the final stage of heating, and the temperature of the liquid is relatively high and close to the boiling state, and the temperature rising speed of the liquid gradually decreases but still increases at a certain speed.

[0076] Based on the above cases, the application determines that the liquid in the container is not boiling when the following two states are detected. Specifically, in the case where the second slope is greater than or equal to the sum of the first slope and the correction coefficient, or in the case where the second slope is less than the sum of the first slope and the correction coefficient and the second slope is outside the preset slope range, it can be determined that the liquid in the container is not boiling.

[0077] It can be understood that, in the case where the second slope is greater than or equal to the sum of the first slope and the correction coefficient, it indicates that the temperature rising speed of the liquid is still increasing, and the liquid is in the initial or middle stage of heating, and obviously the liquid does not reach the boiling state. In the case where the second slope is less than the sum of the first slope and the correction coefficient, it indicates that the temperature rising speed of the liquid has begun to slow down, and the liquid is in the final stage of heating or has reached the boiling stage. To further determine whether the liquid is boiling, the second slope needs to be compared with the preset slope range. The preset slope range is the slope range of the temperature rising of the liquid in the boiling state. If the second slope is outside the preset slope range, it indicates that the liquid has entered the final stage of heating but has not reached the boiling state.

[0078] The determining module in the application compares the second slope with the sum of the first slope and the correction coefficient, and determines that the liquid in the container does not reach the boiling state in the case where the second slope is greater than or equal to the sum of the first slope and the correction coefficient, or in the case where the second slope is less than the sum of the first slope and the correction coefficient and the second slope is outside the preset slope range. By comparing the temperature rising slopes in different stages to determine whether the liquid reaches the boiling state, and further comparing the second slope with the preset slope range, the accuracy of determining the boiling state is improved.

[0079] In the technical solution, the acquisition module is further configured to: acquire a first temperature of the cover body; acquire a second temperature of the cover body after a first time duration; determine a first slope according to a quotient of a difference between the first temperature and the second temperature and the first time duration; acquire a third temperature of the cover body after a second time duration; and determine a second slope according to a quotient of a difference between the second temperature and the third temperature and the second time duration.

[0080] In the technical solution, the acquisition module is further configured to: acquire a first temperature of the cover body; acquire a second temperature of the cover body after a first time duration; determine a first slope according to a quotient of a difference between the first temperature and the second temperature and the first time duration; acquire a third temperature of the cover body after a second time duration; and determine a second slope according to a quotient of a difference between the second temperature and the third temperature and the second time duration.

[0081] Specifically, the first temperature T1 of the cover body is detected first, and then the timing is started. After the first time duration t1, the second temperature T2 of the cover body is detected again. After the first temperature T1, the second temperature T2 and the first time duration t1 are determined, the first slope K1 can be determined according to a slope calculation formula. Specifically, the first slope is determined according to a quotient of a difference between the first temperature and the second temperature and the first time duration, that is, the first temperature T1, the second temperature T2 and the first time duration t1 satisfy the following formula:

[0082] K1=(T2-T1) / t1

[0083] After the first slope is determined, the third temperature of the cover body is acquired after a second time duration, and the second slope is determined according to a quotient of a difference between the second temperature and the third temperature and the second time duration.

[0084] Specifically, after the first slope is determined, the timing is started. After the second time duration t2, the third temperature T3 of the cover body is detected again. The second slope K2 can be determined according to the second temperature T2, the third temperature T3 and the second time duration t2 through the slope calculation formula. Specifically, the second slope is determined according to a quotient of a difference between the second temperature and the third temperature and the second time duration, that is, the second temperature T2, the third temperature T3 and the second time duration t2 satisfy the following formula:

[0085] K2=(T3-T2) / t2

[0086] The acquisition module measures the temperature of the cover body at different time periods, and determines each temperature rise slope according to a quotient of a temperature difference between different time points and a corresponding time duration. The temperature rise slope reflects the temperature change trend of the cover body at different time periods, so as to determine whether the liquid in the container is boiling by comparing the temperature rise slopes at different time periods.

[0087] In the technical solution, further, the obtaining module is further configured to update the second slope; and the determining module is further configured to determine whether the liquid in the container is boiling according to a relationship between the first slope and the updated second slope and a relationship between the updated second slope and the preset slope range.

[0088] In the technical solution, after determining that the liquid in the container is not boiling, the temperature of the cover body is continuously detected, and a new second slope is obtained to update the original second slope. It can be understood that, in the case of determining that the liquid is not boiling, the state of the liquid needs to be monitored continuously to ensure that the liquid is determined to have boiled accurately and timely. In the case of determining that the original second slope does not meet the liquid boiling condition, a new second slope is obtained to update the original second slope, thereby realizing continuous monitoring of the liquid in the container. Therefore, the obtaining module in the application is further configured to update the second slope.

[0089] Further, the determining module is further configured to realize the following functions. After updating the second slope, whether the liquid in the container is boiling is determined according to a relationship between the first slope and the updated second slope and a relationship between the updated second slope and the preset slope range.

[0090] Specifically, in the case that the updated second slope is less than a sum of the first slope and the correction coefficient and the updated second slope is within the preset slope range, it is determined that the liquid in the container is boiling. In the case that the updated second slope is greater than or equal to the sum of the first slope and the correction coefficient or the updated second slope is less than the sum of the first slope and the correction coefficient and the updated second slope is outside the preset slope range, it is determined that the liquid in the container is not boiling.

[0091] By updating the second slope after determining that the liquid in the container is not boiling and determining whether the liquid in the container is boiling according to a relationship between the first slope and the updated second slope and a relationship between the updated second slope and the preset slope range, continuous monitoring of the liquid in the container is realized, thereby ensuring that the liquid is determined to have boiled accurately and timely.

[0092] In the technical solution, further, the obtaining module is further configured to, after the second time length, obtain a fourth temperature of the cover body; and update the second slope according to a quotient of a difference between the fourth temperature and the third temperature and the second time length.

[0093] In the technical solution, the obtaining module is further configured to realize the following functions. After the second time length, a fourth temperature of the cover body is obtained.

[0094] Specifically, after determining that the liquid in the container is not boiling, the temperature of the cover is detected again to obtain a fourth temperature T4 of the cover. A new second slope K2' can be determined according to the third temperature T3, the fourth temperature T4 and the second time length t2 through a slope calculation formula. Specifically, the second slope is updated according to the quotient of the difference between the fourth temperature and the third temperature and the second time length, that is, the fourth temperature T4, the third temperature T3 and the second time length t2 satisfy the following formula:

[0095] K2' = (T4-T3) / t2

[0096] Further, the acquisition module can repeatedly update the second slope until the liquid boils.

[0097] By re-detecting the temperature of the cover under the condition that it is determined that the liquid in the container is not boiling, and determining a new second slope according to the new detection temperature and the last detection temperature of the previous stage, continuous monitoring of the liquid is realized, so that the liquid has boiled can be accurately and timely determined.

[0098] The fourth aspect of the present application also provides a boiling determination system, which comprises the boiling determination device according to the second aspect or the third aspect of the present application; an interactive system for receiving control input; and a power supply system for supplying power to the boiling determination device and the interactive system.

[0099] The boiling determination system provided by the present application comprises a boiling determination device, an interactive system and a power supply system. The interactive system is used for receiving control input, and a user can input control instructions through the interactive system. Specifically, the interactive system can be an operation panel arranged on a cooking appliance, or a system in communication connection with a user terminal. The user can input control instructions through the operation panel arranged on the cooking appliance, or control the cooking appliance through a remote control system in a mobile terminal such as a mobile phone or a tablet computer. The power supply system is used for supplying power to the boiling determination device and the interactive system.

[0100] The boiling determination system provided by the fourth aspect of the present application has all the beneficial effects of the boiling determination device according to the second aspect or the third aspect of the present application.

[0101] The readable storage medium provided by the fifth aspect of the present application can realize the steps of the boiling determination method according to the first aspect of the present application, and therefore has all the beneficial effects of the boiling determination method.

[0102] The sixth aspect of the present application also provides an electric rice cooker, which comprises the boiling determination device according to the second aspect or the third aspect of the present application; and / or the boiling determination system according to the fourth aspect of the present application; and / or the readable storage medium according to the fifth aspect of the present application.

[0103] The electric rice cooker provided by the sixth aspect of the present application has all the advantages of the boiling determination device, the boiling determination system and the readable storage medium.

[0104] Additional aspects and advantages of the present application will be apparent from the following description of the embodiments, taken together with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0105] The above and / or additional aspects and advantages of the present application will become apparent and be more readily understood from the following description, taken together with the accompanying drawings, in which:

[0106] Figure 1 A schematic flow chart of the boiling control method in the first embodiment of the present application is shown;

[0107] Figure 2 A schematic flow chart of the boiling control method in the second embodiment of the present application is shown;

[0108] Figure 3 A schematic flow chart of the boiling control method in the fifth embodiment of the present application is shown;

[0109] Figure 4 A schematic flow chart of the boiling control method in the sixth embodiment of the present application is shown;

[0110] Figure 5 A schematic block diagram of the boiling control device in the seventh embodiment of the present application is shown;

[0111] Figure 6 A schematic block diagram of the boiling control device in the eighth embodiment of the present application is shown;

[0112] Figure 7 A schematic block diagram of the boiling control system in the fourteenth embodiment of the present application is shown;

[0113] Figure 8 A schematic block diagram of the boiling control system in the fourteenth embodiment of the present application is shown;

[0114] Wherein, Figures 5 to 8 The correspondence between the reference signs and the component names in the accompanying drawings is as follows:

[0115] 100 boiling determination device, 110 memory, 120 processor,

[0116] 200 boiling determination device, 210 acquisition module, 220 determination module,

[0117] 300 boiling determination system, 310 interaction system, 320 power supply system. DETAILED DESCRIPTION

[0118] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the following further describes the present application with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0119] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and therefore the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0120] The following refers to Figures 1 to 8 The boiling determination method, the boiling determination device 100, the boiling determination device 200, the boiling determination system 300, the readable storage medium and the electric rice cooker according to some embodiments of the present application are described.

[0121] Embodiment 1:

[0122] The embodiments of the first aspect of the present application propose a boiling determination method for a cooking appliance. Specifically, the cooking appliance includes a container for holding food materials to be cooked. The container is further provided with a cover which is openably arranged above the container. In the state that the cooking appliance is not cooking, the cover can be opened to put the food materials to be cooked into the container or take out the cooked food materials from the container. During the cooking process of the cooking appliance, the cover is buckled to close the container. The cover of the cooking appliance is provided with a temperature detection device which can detect the temperature of the cover.

[0123] The food materials to be cooked are a solid-liquid mixture. Understandably, during the cooking process of the food materials, the food materials are heated, and the liquid is constantly converted into high-temperature steam, so that the temperature in the container is constantly increased until the liquid is boiled. When the liquid is in a boiling state, the temperature of the liquid does not increase after reaching the boiling point, and the increasing speed of the temperature in the container slows down. Therefore, the boiling state of the liquid can be determined by the increasing speed of the temperature in the pot body in different time periods.

[0124] The cover is in contact with the high-temperature steam in the container, and the increasing speed of the temperature of the cover tends to be consistent with the increasing speed of the temperature of the liquid in the container, so that whether the liquid is boiled can be determined by the increasing speed of the temperature of the cover.

[0125] As shown in Figure 1 The boiling determination method proposed by the present application specifically includes:

[0126] S102: Obtain a first slope of the temperature rise of the cover in a first time period.

[0127] It can be understood that when the cooking utensil heats the food material in the container, the temperature of the liquid is constantly rising, thereby the temperature in the container is correspondingly increased, and the temperature rising speed of the cover body tends to be the same as that of the liquid. In the first time length, the first slope of the temperature rising of the cover body directly reflects the temperature rising speed of the cover body in the first time length, and further reflects the temperature rising speed of the liquid in the container in the first time length.

[0128] S104: Obtain a second slope of the temperature rising of the cover body in the second time length.

[0129] Specifically, after the first time length ends, the timing is restarted until the second time length is reached, and the second slope of the temperature rising of the cover body in the time period is obtained.

[0130] S106: Determine whether the liquid in the container is boiling according to the relationship between the first slope and the second slope, and the relationship between the second slope and the preset slope range.

[0131] Further, since the first slope and the second slope respectively reflect different speeds of the temperature rising of the cover body in different time periods, comparing the sum of the first slope and the correction coefficient with the second slope, and comparing the second slope with the preset slope range, the boiling state of the liquid can be determined according to the relationship between the above data.

[0132] The first slope and the second slope respectively reflect the temperature rising speed of the cover body in the first time length and the second time length, i.e. the temperature rising speed of the liquid in the container in the first time length and the second time length. It can be understood that the greater the slope, the faster the temperature rising speed, and in the state of boiling of the liquid, since the temperature of the liquid reaches the boiling point and no longer rises, at this time, the temperature of the cover body also tends to be stable, and the temperature rising speed slows down. By adding the first slope and the correction coefficient to obtain the sum thereof, and comparing the sum with the second slope, according to the size relationship between the sum of the first slope and the correction coefficient and the second slope, it can be determined whether the liquid in the container is currently boiling.

[0133] The present application detects the temperature of the cover body through the temperature detection device arranged in the cover body, and reflects the temperature of the liquid in the container through the temperature of the cover body. It can be understood that different cover body settings will have different effects on the detection result, therefore, it is necessary to set a correction coefficient, add the correction coefficient to the first slope, thereby correcting the first slope, and improving the accuracy of the judgment. Specifically, different correction coefficients can be set according to different cooking devices.

[0134] Furthermore, when a liquid is nearing boiling but not yet boiling, the rate of temperature rise begins to slow down. As the liquid temperature rises to the boiling point, the rate of temperature rise continuously decreases until it stabilizes. Therefore, it is necessary to limit the range of values ​​for the second slope to avoid misjudging a liquid nearing boiling as boiling, thus preventing misdiagnosis.

[0135] This application compares the slope of the lid temperature rise over different time periods. The slope can be used to determine the rate of temperature increase of the liquid inside the container during different time periods. Furthermore, based on the comparison of the two slopes and the relationship between the second slope and a preset slope range, the boiling state of the liquid can be determined. Compared to the traditional method of determining whether a liquid is boiling by detecting water vapor temperature, this method avoids the problem of different boiling points due to altitude, improves the accuracy of determining the boiling state, allows for more precise control of the cooking process, improves the safety of cooking utensils, and enhances the taste of food.

[0136] Example 2:

[0137] like Figure 2 As shown, based on Embodiment 1, Embodiment 2 provides a fan operation control method, wherein step S106 includes:

[0138] S106a: Confirm whether the second slope is less than the sum of the first slope and the correction factor;

[0139] S106b: Confirm whether the second slope is within the preset slope range.

[0140] Understandably, the slope reflects the rate of temperature rise of the lid over a period of time, and thus the rate of temperature rise of the liquid inside the container over that period. A larger slope indicates a faster rate of temperature rise over a given time period. If the sum of the first slope and the correction factor is greater than the second slope, it means that relative to the rate of temperature rise of the liquid inside the container during the first time period, the rate of temperature rise slows down during the second time period; at this point, the liquid is close to boiling. By comparing the magnitude of the second slope with the sum of the first slope and the correction factor, a preliminary judgment can be made as to whether the liquid is in a boiling state.

[0141] To further determine whether the liquid is in a boiling state or a state close to boiling, on the basis of satisfying the condition that the second slope is less than the sum of the first slope and the correction coefficient, the second slope is compared with a preset slope range to determine whether the second slope is within the preset slope range. Specifically, the temperature rising speed of the liquid is different when the liquid is close to a boiling state and when the liquid is already in a boiling state, and the slopes are also different. When the liquid is in a boiling state, the temperature rising slope of the cover is less than the temperature rising slope of the cover when the liquid is close to a boiling state. By limiting the second slope within the preset slope range, misjudgment of the boiling state can be avoided.

[0142] In the case where the second slope is less than the sum of the first slope and the correction coefficient, and the second slope is within the preset slope range, the method comprises the following step S106c:

[0143] S106c: determining that the liquid in the container is boiling.

[0144] Specifically, in the case where the second slope is less than the sum of the first slope and the correction coefficient, it indicates that the state of the liquid at this time is boiling or has approached boiling. Further, in the case where the second slope is within the preset slope range, it can further indicate that the liquid is already in a boiling state.

[0145] The application determines the second slope and the sum of the first slope and the correction coefficient, and determines the relationship between the two. In the case where the sum of the first slope and the correction coefficient is greater than the second slope, and the second slope is within the preset slope range, it is determined that the liquid in the container is boiling. By reflecting the temperature rising speed of the liquid through the slope, the accuracy of determining the boiling state is improved.

[0146] Further, if the liquid in the container has not reached a boiling state, there are two cases. First, the liquid is in the initial and middle stages of heating, at which time the temperature rising speed of the liquid gradually increases. Second, the liquid is in the final stage of heating, at which time the liquid temperature is high and close to a boiling state, and the temperature rising speed of the liquid gradually decreases but still rises at a certain speed.

[0147] Based on the above situation, the application determines that the liquid in the container is in a non-boiling state when the following two states are detected. Specifically, in the case where the sum of the first slope and the correction coefficient is less than or equal to the second slope, or in the case where the sum of the first slope and the correction coefficient is greater than the second slope, and the second slope is not within the preset slope range, the method comprises the following step S106d:

[0148] S106d: determining that the liquid in the container is not boiling.

[0149] It can be understood that, in the case that the sum of the first slope and the correction coefficient is less than or equal to the second slope, it indicates that the temperature rising speed of the liquid is still accelerating, at this time, the liquid is in the initial or middle stage of heating, and obviously the liquid has not reached the boiling state. In the case that the sum of the first slope and the correction coefficient is greater than the second slope, it indicates that the temperature rising speed of the liquid has begun to slow down, at this time, the liquid is in the final stage of heating or has reached the boiling stage. In order to further determine whether the liquid is boiling, the second slope needs to be compared with a preset slope range. The preset slope range is the slope range of the temperature rising of the liquid in the boiling state. If the second slope is outside the preset slope range, it indicates that at this time, the liquid has entered the final stage of heating, but has not reached the boiling state.

[0150] The present application obtains the second slope and the sum of the first slope and the correction coefficient, and compares the two, determines that the liquid in the container has not reached the boiling state according to the comparison result, judges whether the liquid has reached the boiling state by comparing the temperature rising slopes in different stages, and further compares the second slope with the preset slope range, thereby improving the accuracy of the determination of the boiling state.

[0151] Embodiment 3:

[0152] On the basis of any of the above embodiments, embodiment 3 provides a boiling determination method, wherein in order to heat the food material in the container, the cooking appliance further comprises a heating member, and before obtaining the first slope, the method further comprises:

[0153] S101: controlling the heating member to be turned on for a third time length.

[0154] Specifically, after the cooking appliance is started, the heating member is started to heat the food material in the container. In the initial stage of starting the heating member, because the temperature of the food material and the temperature in the container are low, the temperature change of the cover body is small. At this time, if the temperature of the cover body is detected and the temperature rising slope in a period of time is determined according to the detection result, the obtained temperature rising slope value is small. Since the temperature measurement result is prone to have a certain error, the smaller the temperature rising slope value is, the greater the influence of the measurement error on the slope is. Therefore, if the temperature of the cover body is detected and the temperature rising slope is obtained at the beginning of heating, the obtained slope is prone to be inaccurate, thereby affecting the judgment result.

[0155] In order to avoid the above problems, after the cooking appliance is started, the heating member is first controlled to start working, and when the running time of the heating member reaches the third time length, the temperature rising slope of the cover body is then obtained, thereby reducing the detection error.

[0156] The first slope is obtained after the heating member is started and the heating member is turned on for a third time length. The temperature detection error is reduced, the influence of the detection error on the first slope value is reduced, the accuracy of the obtained first slope is improved, and the control accuracy is improved.

[0157] Embodiment 4:

[0158] Embodiment 4 provides a boiling determination method based on any of the above embodiments, wherein the first slope is obtained, and the second slope is obtained, specifically comprising:

[0159] S102a: obtaining a first temperature of the cover body;

[0160] S102b: obtaining a second temperature of the cover body after a first time length;

[0161] S102c: determining a first slope according to a quotient of a difference between the first temperature and the second temperature and the first time length.

[0162] Specifically, the temperature of the cover body is detected first to obtain a first temperature T1 of the cover body, and then timing is started. After a first time length t1, the temperature of the cover body is detected again to obtain a second temperature T2 of the cover body. After the first temperature T1, the second temperature T2, and the first time length t1 are determined, the first slope K1 can be determined by a slope calculation formula. Specifically, the first temperature is subtracted from the second temperature, and then the quotient of the difference and the first time length is obtained, to obtain the first slope. That is, the first temperature T1, the second temperature T2, and the first time length t1 satisfy the following formula:

[0163] K1=(T2-T1) / t1

[0164] After the first slope is obtained, the following steps are further included:

[0165] S104a: obtaining a third temperature of the cover body after a second time length;

[0166] S104b: determining a second slope according to a quotient of a difference between the second temperature and the third temperature and the second time length.

[0167] Specifically, after the first slope is determined, timing is started. After a second time length t2, the temperature of the cover body is detected again to obtain a third temperature T3 of the cover body. The second slope K2 can be determined according to the second temperature T2, the third temperature T3, and the second time length t2 by a slope calculation formula. Specifically, the second temperature is subtracted from the third temperature, and then the quotient of the difference and the second time length is obtained, to obtain the second slope. That is, the second temperature T2, the third temperature T3, and the second time length t2 satisfy the following formula:

[0168] K2=(T3-T2) / t2

[0169] By measuring the temperature of the lid at different time periods and determining the temperature rise slope based on the quotient of the temperature difference between different time points and the corresponding time duration, the temperature rise slope reflects the temperature change trend of the lid at different time periods. Thus, the boiling state of the liquid can be obtained by comparing the temperature rise slope at different time periods.

[0170] Example 5:

[0171] like Figure 3 As shown, based on any of the above embodiments, Embodiment 5 provides a method for determining boiling, wherein, after determining that the liquid has not boiled, the method further includes:

[0172] S107: Update the second slope.

[0173] Specifically, after determining that the liquid is not boiling, it is necessary to continue monitoring the temperature of the lid and obtain a new second slope to update the original second slope. Understandably, when it is determined that the liquid is not boiling, the state of the liquid needs to be continuously monitored to ensure accurate and timely determination that the liquid has boiled. If it is determined that the original second slope does not meet the conditions for boiling, a new second slope is obtained and the original second slope is updated, thereby achieving continuous monitoring of the liquid inside the container.

[0174] S108: Determine whether the liquid in the container is boiling based on the relationship between the first slope and the updated second slope, and the relationship between the updated second slope and the preset slope range.

[0175] Specifically, if the sum of the first slope and the correction coefficient is greater than the updated second slope, and the updated second slope is within a preset slope range, the liquid is determined to be boiling. If the sum of the updated first slope and the correction coefficient is less than or equal to the updated second slope, or if the sum of the first slope and the correction coefficient is greater than the updated second slope, and the updated second slope is outside the preset slope range, the liquid in the container is determined not to be boiling.

[0176] By updating the second slope after determining that the liquid is boiling, and then determining whether the liquid in the container is boiling again based on the relationship between the first slope and the updated second slope, as well as the relationship between the updated second slope and the preset slope range, continuous monitoring of the liquid in the container is achieved, thereby ensuring that the liquid can be accurately and timely determined to have boiled.

[0177] Example 6:

[0178] like Figure 4As shown, based on any of the above embodiments, Embodiment 6 provides a method for determining boiling, wherein updating the second slope specifically includes:

[0179] S107a: After the second duration, obtain the fourth temperature of the cover;

[0180] S107b: Update the second slope based on the quotient of the difference between the fourth and third temperatures and the second duration.

[0181] Specifically, after confirming that the liquid in the container has not boiled, timing begins and after a second time interval t2, the temperature of the lid is measured again to obtain the fourth temperature T4 of the lid. The new second slope K2′ can be determined using the slope calculation formula based on the third temperature T3, the fourth temperature T4, and the second time interval t2. Specifically, the difference between the fourth temperature and the third temperature is taken, and this difference is divided by the second time interval to obtain the updated second slope. That is, the fourth temperature T4, the third temperature T3, and the second time interval t2 satisfy the following formula:

[0182] K2′=(T4-T3) / t2

[0183] Furthermore, this step can be repeated multiple times until the liquid boils.

[0184] By re-detecting the temperature of the lid when the liquid is determined to be in a non-boiling state, and determining a new second slope based on the new detection temperature and the last detection temperature of the previous stage, continuous monitoring of the liquid can be achieved, thereby ensuring accurate and timely determination that the liquid has boiled.

[0185] Example 7:

[0186] like Figure 5 As shown, a second aspect of the present invention also provides a boiling determination apparatus 100, comprising: a memory 110 and a processor 120. The memory 110 is used to store programs or instructions; the processor 120 is used to execute the programs or instructions to implement the steps of the boiling determination method as proposed in the first aspect of the present invention.

[0187] The boiling determination apparatus 100 provided in the second aspect of the present invention can realize all the steps of the boiling determination method proposed in the first aspect of the present invention, and therefore has all the beneficial effects of the boiling determination method.

[0188] Example 8:

[0189] like Figure 6As shown, the third aspect of the present application also proposes a boiling determination device 200, comprising: an acquisition module 210, configured to acquire a first slope of temperature rise of the cover in a first time period and a second slope of temperature rise of the cover in a second time period; and a determination module 220, configured to determine whether boiling occurs according to a relationship between the first slope and the second slope and a relationship between the second slope and a preset slope range.

[0190] The boiling determination device 200 proposed in the present application comprises the acquisition module 210 and the determination module 220. The acquisition module 210 is configured to acquire the first slope and the second slope.

[0191] Specifically, when the cooking utensil heats the food material in the container, the temperature of the liquid rises, thereby causing the temperature in the container to rise accordingly, and the temperature rise speed of the cover tends to be the same as that of the liquid. The first slope of temperature rise of the cover in the first time period directly reflects the temperature rise speed of the cover in the first time period, and further reflects the temperature rise speed of the liquid in the container in the first time period. In the second time period after the first time period, the temperature of the cover continues to rise, and the timing is restarted after the end of the first time period until the second time period is reached, and the second slope of temperature rise of the cover in the second time period is obtained.

[0192] After the first slope and the second slope of temperature rise of the cover in two different time periods are acquired, the boiling state of the liquid can be confirmed according to the relationship between the first slope and the second slope. Specifically, the determination module 220 in the boiling determination device 200 can determine whether the liquid is boiling, and specifically, the boiling state of the liquid is related to the relationship between the first slope and the second slope and the relationship between the second slope and the preset slope range.

[0193] The first slope and the second slope respectively reflect the temperature rise speed of the cover in the first time period and the second time period, i.e., the temperature rise speed of the liquid in the container in the first time period and the second time period. It can be understood that the greater the slope, the faster the temperature rise speed, and in the state of boiling of the liquid, the temperature of the liquid reaches the boiling point and no longer rises, at this time, the temperature of the cover tends to be stable, and the temperature rise speed slows down. By comparing the sum of the first slope and the correction coefficient with the second slope, according to the size relationship between the sum of the first slope and the correction coefficient and the second slope, it can be determined whether the liquid in the container is currently boiling.

[0194] The present application detects the temperature of the cover through the temperature detection device arranged in the cover, and reflects the temperature of the liquid in the container through the temperature of the cover. It can be understood that different cover settings will have different effects on the detection result, therefore, it is necessary to set a correction coefficient, add the correction coefficient to the first slope, and thereby correct the first slope to improve the accuracy of the judgment. Specifically, different correction coefficients can be set according to different cooking devices.

[0195] Further, when the liquid is close to the boiling state without boiling, the temperature rising speed of the liquid has already begun to slow down, and as the temperature of the liquid rises to the boiling point, the temperature rising speed of the liquid continuously decreases until it remains stable. Therefore, the value range of the second slope needs to be limited to avoid judging the liquid close to the boiling state as the boiling state and prevent misjudgment.

[0196] The application can obtain the first slope and the second slope of the temperature rise of the cover in different time periods through the setting of the obtaining module 210 and the determining module 220 in the boiling determination device 200, and determine whether it is boiling according to the relationship between the first slope and the second slope and the relationship between the second slope and the preset slope range. Compared with the traditional way of determining whether the liquid is boiling by detecting the water vapor temperature, the boiling determination device 200 proposed in the application avoids the problem of different boiling points caused by different altitudes, improves the accuracy of determining the boiling state, can more accurately control the cooking process, improves the safety of the cooking utensil, and makes the food taste better.

[0197] Embodiment 9:

[0198] On the basis of embodiment 8, embodiment 9 provides a boiling determination device 200, wherein the determining module 220 is further configured to determine that the liquid in the container is boiling based on that the second slope is less than the sum of the first slope and the correction coefficient and the second slope is within the preset slope range.

[0199] In the technical solution, the determining module 220 is further configured to perform the following functions. First, the size relationship between the first slope and the second slope is determined. Understandably, the slope reflects the temperature rising speed of the cover in a period of time, and further reflects the temperature rising speed of the liquid in the container in a period of time. In a period of time, the greater the slope, the faster the temperature rising speed. In the case that the sum of the first slope and the correction coefficient is greater than the second slope, it is indicated that the temperature rising speed of the liquid in the container in the second time period is slower than that in the first time period, and at this time, the liquid is close to the boiling state.

[0200] In order to further determine whether the liquid is in the boiling state or is about to be in the boiling state, further comparison between the second slope and the preset slope range is needed to determine whether the second slope is within the preset slope range. Specifically, the temperature rising speeds of the liquid in the boiling state and the liquid close to the boiling state are different, and the slopes are also different. When the liquid is in the boiling state, the temperature rising slope of the cover is less than the temperature rising slope of the cover when the liquid is close to the boiling state. By limiting the second slope within the preset slope range, misjudgment of the boiling state can be avoided.

[0201] By making the determining module 220 determine the second slope and the sum of the first slope and the correction coefficient, and determining the relationship between the two, the liquid in the container is determined to be boiling when the sum of the first slope and the correction coefficient is greater than the second slope, and the second slope is within the preset slope range. By reflecting the temperature rise speed of the liquid through the slope, the accuracy of the boiling state determination is improved.

[0202] Embodiment 10:

[0203] On the basis of Embodiment 8 or 9, Embodiment 10 provides a boiling determination apparatus 200, wherein the determining module 220 is further configured to determine that the liquid in the container is not boiling based on that the second slope is greater than or equal to the sum of the first slope and the correction coefficient, or based on that the second slope is less than the sum of the first slope and the correction coefficient, and the second slope is outside the preset slope range.

[0204] In this technical solution, the determining module 220 is further configured to perform the following functions. First, the size relationship between the first slope and the second slope is judged. If the liquid in the container has not reached the boiling state, there are two cases. First, the liquid is in the initial and middle stages of heating, at which time the temperature rise speed of the liquid gradually accelerates. Second, the liquid is in the final stage of heating, at which time the liquid temperature is high and has approached the boiling state, the temperature rise speed of the liquid gradually slows down, but still rises at a certain speed.

[0205] Based on the above cases, the present application determines that the liquid in the container is in a non-boiling state when the following two states are detected. Specifically, in the case where the sum of the first slope and the correction coefficient is less than or equal to the second slope, or in the case where the sum of the first slope and the correction coefficient is greater than the second slope, and the second slope is outside the preset slope range, it can be determined that the liquid is in a non-boiling state.

[0206] It can be understood that, in the case where the second slope is greater than or equal to the sum of the first slope and the correction coefficient, it indicates that the temperature rise speed of the liquid is still accelerating, at which time the liquid is in the initial or middle stage of heating, and obviously the liquid has not reached the boiling state. In the case where the second slope is less than the sum of the first slope and the correction coefficient, it indicates that the temperature rise speed of the liquid has begun to slow down, at which time the liquid is in the final stage of heating or has reached the boiling stage. In order to further determine whether the liquid is boiling, the second slope needs to be compared with the preset slope range. The preset slope range is the slope range of the temperature rise of the liquid in the boiling state. If the second slope is outside the preset slope range, it indicates that at this time the liquid has entered the final stage of heating, but has not yet reached the boiling state.

[0207] In the case of obtaining the second slope, and the sum of the first slope and the correction coefficient, the determination module 220 compares the two, and in the case that the sum of the first slope and the correction coefficient is less than or equal to the second slope, or in the case that the sum of the first slope and the correction coefficient is greater than the second slope, and the second slope is outside the preset slope range, it is determined that the liquid in the container has not reached the boiling state. By comparing the temperature rising slopes in different stages, it is determined whether the liquid has reached the boiling state, and further, the second slope is compared with the preset slope range, thereby improving the accuracy of the boiling state determination.

[0208] Embodiment 11:

[0209] On the basis of Embodiment 9 or 10, Embodiment 11 provides a boiling determination device 200, wherein the obtaining module 210 is further configured to: obtain a first temperature of the cover; obtain a second temperature of the cover after a first time length; determine a first slope according to a quotient of a difference between the first temperature and the second temperature and the first time length; obtain a third temperature of the cover after a second time length; and determine a second slope according to a quotient of a difference between the second temperature and the third temperature and the second time length.

[0210] In this technical solution, the obtaining module 210 is further configured to: obtain a first temperature of the cover; obtain a second temperature of the cover after a first time length; and determine a first slope according to a quotient of a difference between the first temperature and the second temperature and the first time length.

[0211] Specifically, the temperature of the cover is first detected to obtain a first temperature T1 of the cover, and then timing is started. After a first time length t1, the temperature of the cover is detected again to obtain a second temperature T2 of the cover. After the first temperature T1, the second temperature T2, and the first time length t1 are determined, the first slope K1 can be determined according to a slope calculation formula. Specifically, the first temperature and the second temperature are subtracted to obtain a difference, and a quotient of the difference and the first time length is obtained to obtain the first slope, that is, the first temperature T1, the second temperature T2, and the first time length t1 satisfy the following formula:

[0212] K1=(T2-T1) / t1

[0213] After the first slope is determined, the second slope of the next stage is further confirmed.

[0214] Specifically, after the first slope is determined, timing is started, and after a second time length t2, the temperature of the cover is detected again to obtain a third temperature T3 of the cover. The second slope K2 can be determined according to a slope calculation formula according to the second temperature T2, the third temperature T3, and the second time length t2. Specifically, the second temperature and the third temperature are subtracted to obtain a difference, and a quotient of the difference and the second time length is obtained to obtain the second slope, that is, the second temperature T2, the third temperature T3, and the second time length t2 satisfy the following formula:

[0215] K2 = (T3 - T2) / t2

[0216] The temperature of the cover in different time periods is measured by the temperature acquisition module 210, and each temperature rise slope is determined according to the quotient of the temperature difference between different time points and the corresponding time length. The temperature rise slope reflects the temperature change trend of the cover in different time periods, so as to determine whether the liquid is in a boiling state by comparing the temperature rise slopes in different time periods.

[0217] Embodiment 12:

[0218] On the basis of Embodiment 11, Embodiment 12 provides a boiling determination device 200, wherein the acquisition module 210 is further configured to update the second slope; and the determination module 220 is further configured to determine whether the liquid in the container is boiling according to the relationship between the first slope and the updated second slope, and the relationship between the updated second slope and the preset slope range.

[0219] In this technical solution, after it is determined that the liquid in the container is not boiling, the temperature of the cover continues to be detected, and a new second slope is acquired to update the original second slope. Understandably, in the case where it is determined that the liquid is not boiling, the state of the liquid needs to be monitored continuously, so as to ensure that the liquid can be determined to have boiled accurately and timely. In the case where it is determined that the original second slope does not meet the boiling condition of the liquid, a new second slope is acquired again and the original second slope is updated, so as to realize continuous monitoring of the liquid in the container. Therefore, the acquisition module 210 in the present application is further configured to update the second slope.

[0220] Further, the determination module 220 is further configured to realize the following functions. After the second slope is updated, whether the liquid in the container is boiling is determined according to the relationship between the first slope and the updated second slope, and the relationship between the updated second slope and the preset slope range.

[0221] Specifically, in the case where the sum of the first slope and the correction coefficient is greater than the updated second slope, and the updated second slope is within the preset slope range, it is determined that the liquid is in a boiling state. In the case where the sum of the first slope and the correction coefficient is less than or equal to the updated second slope, or the sum of the first slope and the correction coefficient is greater than the updated second slope, and the updated second slope is outside the preset slope range, it is determined that the liquid in the container is not boiling.

[0222] By updating the second slope after it is determined that the liquid in the container is not boiling, and determining again whether the liquid in the container is boiling according to the relationship between the first slope and the updated second slope, and the relationship between the updated second slope and the preset slope range, continuous monitoring of the liquid in the container is realized, so as to ensure that the liquid can be determined to have boiled accurately and timely.

[0223] Embodiment 13

[0224] On the basis of Embodiment 12, Embodiment 13 provides a boiling determination apparatus 200, wherein the obtaining module 210 is further configured to: obtain a fourth temperature of the cover body after a second time duration; and update the second slope according to a quotient of a difference between the fourth temperature and the third temperature and the second time duration.

[0225] In this technical solution, the obtaining module 210 is further configured to perform the following functions. The fourth temperature of the cover body is obtained after a second time duration.

[0226] Specifically, after determining that the liquid in the container is not boiling, the timing is started and the temperature of the cover body is detected again after a second time duration t2 to obtain a fourth temperature T4 of the cover body. A new second slope K2' can be determined according to the third temperature T3, the fourth temperature T4 and the second time duration t2 through a slope calculation formula. Specifically, the second slope is updated according to a quotient of a difference between the fourth temperature and the third temperature and the second time duration, i.e., the fourth temperature T4, the third temperature T3 and the second time duration t2 satisfy the following formula:

[0227] K2' = (T4-T3) / t2

[0228] Further, the obtaining module 210 can repeatedly update the second slope until the liquid boils.

[0229] By re-detecting the temperature of the cover body under the condition that it is determined that the liquid in the container is not boiling, and determining a new second slope according to the new detection temperature and the last detection temperature at the end of the previous stage, continuous monitoring of the liquid is realized, so that the liquid can be accurately and timely determined to have boiled.

[0230] Embodiment 14

[0231] As shown in Figure 7 and Figure 8 A fourth aspect of the present application further provides a boiling determination system 300, comprising the boiling determination apparatus 100 according to the second aspect of the present application or the boiling determination apparatus 200 according to the third aspect of the present application; an interactive system 310 configured to receive a control input; and a power supply system 320 configured to supply power to the boiling determination apparatus and the interactive system.

[0232] The boiling determination system 300 provided in the present application comprises the boiling determination device 100 or the boiling determination device 200, an interactive system 310 and a power supply system 320. The interactive system 310 is configured to receive a control input, and a user can input a control instruction through the interactive system. Specifically, the interactive system 310 can be an operation panel arranged on the cooking appliance, or a system in communication connection with a user terminal. The user can input a control instruction through the operation panel arranged on the cooking appliance, or control the cooking appliance through a remote control system in a mobile terminal such as a mobile phone or a tablet computer. The power supply system 320 is configured to supply power to the boiling determination device 100 or the boiling determination device 200 and the interactive system 310.

[0233] The boiling determination system 300 provided in the fourth aspect of the present application comprises the boiling determination device 100 provided in the second aspect of the present application or the boiling determination device 200 provided in the third aspect of the present application, and thus has all the beneficial effects of the boiling determination device 100 or the boiling determination device 200.

[0234] Embodiment 15

[0235] The readable storage medium provided in the fifth aspect of the present application can realize the steps of the boiling determination method provided in the first aspect of the present application, and thus has all the beneficial effects of the boiling determination method.

[0236] Embodiment 16

[0237] The sixth aspect of the present application further provides an electric rice cooker comprising the boiling determination device 100 provided in the second aspect of the present application or the boiling determination device 200 provided in the third aspect of the present application; and / or the boiling determination system 300 provided in the fourth aspect of the present application; and / or the readable storage medium provided in the fifth aspect of the present application.

[0238] The electric rice cooker provided in the sixth aspect of the present application comprises the boiling determination device 100 provided in the second aspect of the present application or the boiling determination device 200 provided in the third aspect of the present application; and / or the boiling determination system 300 provided in the fourth aspect of the present application; and / or the readable storage medium provided in the fifth aspect of the present application, and thus has all the beneficial effects of the boiling determination device 100 or the boiling determination device 200 and / or the boiling determination system 300 and / or the readable storage medium.

[0239] In the present application, the term “plurality” refers to two or more, unless otherwise explicitly limited. The terms “mounting”, “connecting”, “connecting”, “fixing” and the like should be understood in a broad sense, for example, “connecting” can be fixed connection, or detachable connection, or integrally connected; “connecting” can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0240] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "certain embodiments", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner.

[0241] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A boiling determination method characterized by, A cooking appliance, comprising a container and a cover body arranged on the container, comprising: obtaining a first slope of temperature rise of the cover body within a first time length; obtaining a second slope of temperature rise of the cover body within a second time length; determining whether the liquid in the container is boiling according to a relationship between the first slope and the second slope, and a relationship between the second slope and a preset slope range; wherein different correction parameters are set according to different cooking appliances; the determining whether the liquid in the container is boiling according to the relationship between the first slope and the second slope, and the relationship between the second slope and the preset slope range, comprises: determining that the liquid in the container is boiling based on that the second slope is less than a sum of the first slope and a correction coefficient, and the second slope is within the preset slope range; the determining whether the liquid in the container is boiling according to the relationship between the first slope and the second slope, and the relationship between the second slope and the preset slope range, further comprises: determining that the liquid in the container is not boiling based on that the second slope is greater than or equal to the sum of the first slope and the correction coefficient, or determining that the liquid in the container is not boiling based on that the second slope is less than the sum of the first slope and the correction coefficient, and the second slope is outside the preset slope range.

2. The boiling determination method according to claim 1, characterized by, The cooking appliance comprises a heating member, and before the obtaining of the first slope of temperature rise of the cover body within the first time length, the cooking appliance further comprises: controlling the heating member to be turned on for a third time length.

3. The boiling determination method according to claim 1, characterized by, The obtaining of the first slope of temperature rise of the cover body within the first time length, and the obtaining of the second slope of temperature rise of the cover body within the second time length, specifically comprises: obtaining a first temperature of the cover body; after the first time length, obtaining a second temperature of the cover body; determining the first slope according to a quotient of a difference between the first temperature and the second temperature and the first time length; after the second time length, obtaining a third temperature of the cover body; determining the second slope according to a quotient of a difference between the second temperature and the third temperature and the second time length.

4. The boiling determination method according to claim 3, characterized by, After the determining that the liquid in the container is not boiling, the boiling determination method further comprises: updating the second slope; determining whether the liquid in the container is boiling according to a relationship between the first slope and the updated second slope, and a relationship between the updated second slope and the preset slope range.

5. The boiling determination method according to claim 4, characterized by, The updating of the second slope specifically comprises: after the second time length, obtaining a fourth temperature of the cover body; updating the second slope according to a quotient of a difference between the fourth temperature and the third temperature and the second time length.

6. A boiling determination device, characterized by comprising: comprising: a memory for storing programs or instructions; a processor for executing the programs or the instructions to implement the steps of the boiling determination method according to any one of claims 1 to 5.

7. A boiling determination device provided in a cooking appliance including a container and a cover provided on the container, characterized in that, comprising: an obtaining module for obtaining a first slope of temperature rise of the cover body within a first time length and a second slope of temperature rise of the cover body within a second time length; a determining module for determining whether to boil according to a relationship between the first slope and the second slope, and a relationship between the second slope and a preset slope range; The different correction parameters are set according to different cooking utensils. The determination module is further configured to determine that the liquid in the container is boiling based on the second slope being less than a sum of the first slope and a correction coefficient and the second slope being within the preset slope range. The determination module is further configured to determine that the liquid in the container is boiling based on the second slope being greater than or equal to the sum of the first slope and the correction coefficient, or The determination module is further configured to determine that the liquid in the container is not boiling based on the second slope being less than the sum of the first slope and the correction coefficient and the second slope being outside the preset slope range.

8. The boiling determination apparatus according to claim 7, characterized by The acquisition module is further configured to: acquire a first temperature of the cover; acquire a second temperature of the cover after the first time length; determine the first slope according to a quotient of a difference between the first temperature and the second temperature and the first time length; acquire a third temperature of the cover after the second time length; determine the second slope according to a quotient of a difference between the second temperature and the third temperature and the second time length.

9. The boiling determination apparatus according to claim 8, wherein The acquisition module is further configured to update the second slope: The determination module is further configured to determine whether the liquid in the container is boiling according to a relationship between the first slope and the updated second slope and a relationship between the updated second slope and the preset slope range.

10. The boiling determination apparatus according to claim 9, characterized by The acquisition module is further configured to: acquire a fourth temperature of the cover after the second time length; update the second slope according to a quotient of a difference between the fourth temperature and the third temperature and the second time length.

11. A boiling determination system, characterized by comprising: the boiling determination apparatus according to claim 6, or the boiling determination apparatus according to any one of claims 7 to 10; an interaction system configured to receive a control input; a power supply system configured to supply power to the boiling determination apparatus and the interaction system.

12. A readable storage medium, characterized by, a readable storage medium having stored thereon a program or instructions, which, when executed by a processor, implement the steps of the boiling determination method according to any one of claims 1 to 5.

13. An electric rice cooker, characterized by comprising: comprising: the boiling determination apparatus according to claim 6; or the boiling determination apparatus according to any one of claims 7 to 10; and / or the boiling determination system according to claim 11; and / or the readable storage medium according to claim 12.

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