A method for preventing an empty pot of a cooking utensil from burning dry and a related component

Abstract

The present invention discloses a method for preventing a cooking utensil from burning dry with an empty pot and related components, and relates to the field of cooking utensil control. First, a first time length required for the temperature of a pot bottom of the cooking utensil to rise to a preset low temperature range is determined. If the first time length is less than a preset first time length threshold, it is preliminarily determined that the cooking utensil may burn dry with an empty pot. To ensure the accuracy of the judgment, a second time length required for the temperature of the pot bottom to rise to a preset high temperature range is further determined. If the second time length is less than a preset second time length threshold, it is determined that the current state of the cooking utensil is burning dry with an empty pot. Therefore, a heating device is controlled to stop working until a preset protection time length has passed and then the heating device is restarted, thereby reducing the possibility of a fuse in the cooking utensil being burned out due to excessive temperature, and reducing the impact on the service life of the circuit board.

Description

Technical Field

[0001] The invention relates to the field of cooking utensils, in particular to a method for preventing an empty pot of a cooking utensil from being dry-burned and related components. Background Art

[0002] Commonly used cooking appliances such as electric pressure cookers usually have a variety of cooking modes, and users can choose different cooking modes according to different cooking needs. In actual use, there may be a situation where there is no food placed in the inner pot of the cooking appliance, but the user mistakenly starts the cooking appliance. It is also possible that the user selects an inappropriate cooking mode, causing the cooking appliance to burn the food in the inner pot dry, that is, the cooking appliance is dry-burned. The existing technology cannot judge whether there is food placed in the cooking appliance and the weight and volume of the food. Therefore, it is impossible to control the cooking appliance to stop working in time when the empty pot is dry-burned, which may burn the fuse in the cooking appliance and cause the circuit board in the cooking appliance to rise too high in temperature, reducing its life. Summary of the invention

[0003] The object of the present invention is to provide a method and related components for preventing an empty pot of a cooking utensil from being dry-burned, which can reduce the possibility of a fuse in the cooking utensil being burned out due to excessive temperature and reduce the impact on the service life of a circuit board.

[0004] In order to solve the above technical problems, the present invention provides a method for preventing an empty pot of a cooking utensil from being dry-burned, comprising:

[0005] Determining a first time required for the temperature of the bottom of the cooking utensil to rise to a preset low temperature range;

[0006] If the first time duration is less than a preset first time duration threshold, determining a second time duration required for the temperature of the bottom of the cooking utensil to rise to a preset high temperature range, wherein the lowest temperature included in the preset high temperature range is greater than the highest temperature included in the preset low temperature range;

[0007] If the second time duration is less than a preset second time duration threshold, the heating device in the cooking appliance is controlled to stop working until the heating device stops working for a preset protection time duration and then restarts the heating device.

[0008] Preferably, determining the first time required for the temperature of the bottom of the cooking utensil to rise to a preset low temperature range includes:

[0009] Controlling the heating device to start working at a first preset power;

[0010] The timing starts when the temperature of the bottom of the pot reaches a first low-temperature test value, and stops when the temperature of the bottom of the pot reaches a second low-temperature test value, and the time from the start of the timing to the end of the timing is taken as the first time, and the second low-temperature test value is greater than the first low-temperature test value.

[0011] Preferably, before controlling the heating device to start working at the first preset power, the method further comprises:

[0012] Obtaining the current cooking setting temperature of the cooking appliance;

[0013] determining whether the cooking setting temperature is less than a preset low temperature detection threshold, and the preset low temperature detection threshold is greater than the second low temperature test value;

[0014] If yes, the step of controlling the heating device to start working at a first preset power is entered;

[0015] If not, the heating device is controlled to start working according to a preset conventional cooking working mode, wherein the preset conventional cooking working mode is to adjust the working power of the heating device according to the current pot bottom temperature, and the current pot bottom temperature is negatively correlated with the working power.

[0016] Preferably, determining the second time required for the temperature of the bottom of the cooking utensil to rise to a preset high temperature range comprises:

[0017] Controlling the heating device to start working at a second preset power;

[0018] The timing starts when the temperature of the bottom of the pot reaches a first high temperature test value, and stops when the temperature of the bottom of the pot reaches a second high temperature test value, and the time from the start of the timing to the end of the timing is taken as the second time length, and the second high temperature test value is greater than the first high temperature test value.

[0019] Preferably, before controlling the heating device to start working at the second preset power, the method further comprises:

[0020] Obtaining the current cooking setting temperature of the cooking appliance;

[0021] Determining whether the cooking setting temperature is less than a preset high temperature detection threshold, and the preset high temperature detection threshold is greater than the second high temperature test value;

[0022] If yes, the step of controlling the heating device to start working at a second preset power is entered;

[0023] If not, the heating device is controlled to start working according to a preset conventional cooking working mode, wherein the preset conventional cooking working mode is to adjust the working power of the heating device according to the current pot bottom temperature, and the current pot bottom temperature is negatively correlated with the working power.

[0024] Preferably, after restarting the heating device, the method further comprises:

[0025] Obtaining the current bottom temperature of the cooking utensil;

[0026] When the current pot bottom temperature is greater than the preset protection temperature, the preset conventional cooking working mode is entered. The preset conventional cooking working mode is to adjust the working power of the heating device according to the current pot bottom temperature, and the current pot bottom temperature is negatively correlated with the working power.

[0027] Preferably, after obtaining the current pot bottom temperature of the cooking utensil, the method further includes:

[0028] When the current pot bottom temperature is not greater than the preset protection temperature, determining whether the current pot bottom temperature is less than the lowest temperature in the preset high temperature range;

[0029] If the current pot bottom temperature is not less than the lowest temperature in the preset high temperature range, controlling the heating device to work at a third power, and entering the step of obtaining the current pot bottom temperature of the cooking utensil;

[0030] If the current bottom temperature of the pot is lower than the lowest temperature in the preset high temperature range, the heating device is controlled to operate at a fourth power, and if the second time duration is lower than the preset second time duration threshold, the step of controlling the heating device in the cooking appliance to stop working is entered, and the fourth power is higher than the third power.

[0031] The present application also provides a system for preventing an empty pot of a cooking utensil from being dry-burned, comprising:

[0032] A first time determination unit, used to determine a first time required for the temperature of the bottom of the cooking utensil to rise to a preset low temperature range;

[0033] A second time determination unit is used to determine a second time required for the temperature of the bottom of the cooking utensil to rise to a preset high temperature range if the first time is less than a preset first time threshold, wherein the lowest temperature included in the preset high temperature range is greater than the highest temperature included in the preset low temperature range;

[0034] The empty pot dry-burning protection unit is used to control the heating device in the cooking appliance to stop working when the second time length is less than a preset second time length threshold, and restart the heating device after the heating device stops working for a preset protection time length.

[0035] The present application also provides a device for preventing an empty pot of a cooking utensil from being dry-burned, comprising:

[0036] Memory for storing computer programs;

[0037] The processor is used to implement the steps of the above-mentioned method for preventing the cooking utensil from burning dry when the empty pot is burned when executing the computer program.

[0038] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned method for preventing an empty pot of a cooking utensil from drying out are implemented.

[0039] In summary, the present invention provides a method and related components for preventing a cooking utensil from burning dry with an empty pot. First, a first time duration required for the temperature of the bottom of the pot of the cooking utensil to rise to a preset low temperature range is determined. If the first time duration is less than the preset first time duration threshold, it is preliminarily determined that the cooking utensil may burn dry with an empty pot. To ensure the accuracy of the judgment, a second time duration required for the temperature of the bottom of the pot to rise to a preset high temperature range is further determined. If the second time duration is less than the preset second time duration threshold, it is determined that the current state of the cooking utensil is burning dry with an empty pot. Therefore, the heating device is controlled to stop working until the preset protection time duration has passed and then the heating device is restarted, thereby reducing the possibility of the fuse in the cooking utensil being burned out due to excessive temperature and reducing the impact on the service life of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the prior art and the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 A flow chart of a method for preventing an empty pot of a cooking utensil from burning dry provided by the present invention;

[0042] Figure 2 Another flow chart of a method for preventing a cooking utensil from burning dry when the pot is empty provided by the present invention;

[0043] Figure 3 A schematic diagram of the structure of a system for preventing an empty pot of a cooking utensil from being dry-burned provided by the present invention;

[0044] Figure 4 The present invention is a schematic structural diagram of a device for preventing an empty pot of a cooking utensil from drying out. DETAILED DESCRIPTION

[0045] The core of the present invention is to provide a method and related components for preventing an empty pot of a cooking utensil from being dry-burned, which can reduce the possibility of a fuse in the cooking utensil being burned out due to excessive temperature and reduce the impact on the service life of the circuit board.

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Please refer to Figure 1 , Figure 1 A flow chart of a method for preventing an empty pot of a cooking utensil from burning dry provided by the present invention, the method comprising:

[0048] S1: Determine a first time required for the temperature of the bottom of the cooking utensil to rise to a preset low temperature range;

[0049] S2: if the first time duration is less than the preset first time duration threshold, determining a second time duration required for the temperature of the bottom of the cooking utensil to rise to a preset high temperature range, wherein the lowest temperature included in the preset high temperature range is greater than the highest temperature included in the preset low temperature range;

[0050] S3: If the second time duration is less than the preset second time duration threshold, the heating device in the cooking appliance is controlled to stop working until the heating device stops working for a preset protection time duration and then restarts the heating device.

[0051] In actual applications, there may be a situation where there is no food in the inner pot of the cooking utensil, but the user mistakenly starts the cooking utensil. There is also a situation where the user selects an inappropriate cooking mode, causing the cooking utensil to burn the food in the inner pot dry, i.e., the cooking utensil is dry-burned. Since it is difficult to detect whether there is food in the cooking utensil and the state of the food, the present application avoids the risk of the cooking utensil being dry-burned to the greatest extent by changing the working mode of the cooking utensil, and can protect the safety of the cooking utensil to the greatest extent even if there is no food in the cooking utensil or the food is burnt dry.

[0052] Considering that the temperature of the bottom of the pot of the cooking utensil will rise faster when the amount of food in the cooking utensil is small, a preset first time threshold and a preset second time threshold are pre-set in this embodiment. The duration of the temperature rise of the bottom of the pot determines whether there is a risk of the empty pot burning dry. In order to improve the accuracy of the judgment, the present application detects the temperature rise of the bottom of the pot in the low temperature range and the high temperature range respectively. In the present application, it specifically means that if the duration of the temperature rise of the bottom of the pot is less than the preset first time threshold and the preset second time threshold, it proves that the temperature rise of the bottom of the pot is fast, which belongs to the situation where the amount of food in the cooking utensil is small, so it is considered that there may be a risk of the empty pot burning dry. It should also be noted that the preset first time threshold and the preset second time threshold in the present application are pre-set, and unless they need to be modified, they do not need to be reset each time the above steps are executed.

[0053] Specifically, first determine the first time required for the temperature of the bottom of the pot of the cooking utensil to rise to a preset low temperature range. If the first time is less than the preset first time threshold, it is preliminarily considered that the cooking utensil does not contain food or the food placed is small. Therefore, further determine the second time required for the temperature of the bottom of the pot of the cooking utensil to rise to a preset high temperature range. If the second time is less than the preset second time threshold, it is determined that the cooking utensil does not contain food or the food placed is small, so there is a risk of an empty pot burning dry. Therefore, the present application controls the heating device in the cooking utensil to stop working, so that the fuse and circuit board in the cooking utensil can dissipate heat in time to avoid the problem of the fuse being burned and the circuit board life being reduced. In addition, considering that the food still needs to be cooked normally when there is less food placed in the cooking utensil, the heating device is restarted when the time the heating device stops working reaches the preset protection time. Among them, the preset protection time is pre-set, and the present application does not specifically limit its specific value, for example, it is set to 240 seconds.

[0054] In summary, the present invention provides a method for preventing a cooking utensil from burning dry with an empty pot. First, a first time period required for the temperature of the bottom of the pot of the cooking utensil to rise to a preset low temperature range is determined. If the first time period is less than the preset first time period threshold, it is preliminarily determined that the cooking utensil may burn dry with an empty pot. To ensure the accuracy of the judgment, a second time period required for the temperature of the bottom of the pot to rise to a preset high temperature range is further determined. If the second time period is less than the preset second time period threshold, it is determined that the current state of the cooking utensil is burning dry with an empty pot. Therefore, the heating device is controlled to stop working until the preset protection time period has passed and then the heating device is restarted, thereby reducing the possibility of the fuse in the cooking utensil being burned out due to excessive temperature and reducing the impact on the service life of the circuit board.

[0055] Based on the above embodiments:

[0056] As a preferred embodiment, determining the first time required for the temperature of the bottom of the cooking utensil to rise to a preset low temperature range includes:

[0057] Controlling the heating device to start working at a first preset power;

[0058] The timing starts when the temperature at the bottom of the pot reaches a first low-temperature test value, and stops when the temperature at the bottom of the pot reaches a second low-temperature test value. The time between the start and end of the timing is taken as the first time, and the second low-temperature test value is greater than the first low-temperature test value.

[0059] Please refer to Figure 2 , Figure 2 Another flow chart of a method for preventing an empty pot from burning dry in a cooking utensil provided by the present invention. In this embodiment, the first time required for the temperature of the pot bottom of the cooking utensil to rise to a preset low temperature range is specifically to control the heating device to start working at a first preset power. The present application does not specifically limit the value of the first preset power, for example, it is set to more than 80% of the rated power of the cooking utensil, thereby accelerating the speed of obtaining the first time. When the temperature of the pot bottom reaches the first low temperature test value, the temperature of the pot bottom is detected in real time or periodically and timing is started, and the timing is ended when the temperature of the pot bottom rises to the second low temperature test value, and the first time from the start timing to the end timing is obtained. The first low temperature test value and the second low temperature test value are the values ​​of the two endpoints of the preset low temperature range. The present application does not specifically limit the specific values ​​of the first low temperature test value and the second low temperature test value. For example, the first low temperature test value is set between 60 degrees Celsius and 100 degrees Celsius, the second low temperature test value is greater than the first low temperature test value and less than 110 degrees Celsius, and the preset first time threshold is set to within 120 seconds.

[0060] In summary, the steps in this embodiment can be used to make a preliminary judgment on whether there is no food placed in the cooking utensil or whether the amount of food is too little, thereby providing a basis for dry-burn protection of the cooking utensil.

[0061] As a preferred embodiment, before controlling the heating device to start working at the first preset power, the method further includes:

[0062] Get the current cooking setting temperature of the cooking appliance;

[0063] Determine whether the cooking setting temperature is less than a preset low temperature detection threshold, and the preset low temperature detection threshold is greater than a second low temperature test value;

[0064] If yes, the step of controlling the heating device to start working at a first preset power is entered;

[0065] If not, the heating device is controlled to start working according to a preset conventional cooking working mode. The preset conventional cooking working mode is to adjust the working power of the heating device according to the current pot bottom temperature, and the current pot bottom temperature is negatively correlated with the working power.

[0066] Please refer to Figure 2 , Figure 2 Another flow chart of a method for preventing a cooking utensil from burning dry with an empty pot provided by the present invention. In this embodiment, before controlling the heating device to start working at a first preset power, first obtain the current cooking setting temperature of the cooking utensil, wherein the cooking setting temperature is the temperature set by the user when using the cooking utensil. Determine whether the cooking setting temperature is less than a preset low temperature detection threshold, and the low temperature detection threshold is greater than a second low temperature test value, which is the maximum value in the preset low temperature range. If the cooking setting temperature is less than the preset low temperature detection threshold, it is meaningful to perform the above-mentioned low temperature detection process, otherwise the heating device is controlled to start working according to a preset conventional cooking working mode, and the preset conventional cooking working mode is a working mode pre-set in the cooking utensil, and the working power of the heating device can be adjusted according to the temperature of the bottom of the pot, and the bottom temperature of the pot is negatively correlated with the working power, so the risk of the cooking utensil burning dry with an empty pot can be avoided to a certain extent.

[0067] It should be noted that in actual applications, the preset low temperature detection threshold can be set relatively high, for example, set to between 120 degrees Celsius and the maximum temperature that the cooking appliance can withstand, and the first preset power can be set to more than 80% of the rated power.

[0068] As a preferred embodiment, determining the second time required for the temperature of the bottom of the cooking utensil to rise to a preset high temperature range includes:

[0069] Controlling the heating device to start working at a second preset power;

[0070] The timing starts when the temperature of the bottom of the pot reaches the first high temperature test value, and stops when the temperature of the bottom of the pot reaches the second high temperature test value. The time between the start and the end of the timing is taken as the second time, and the second high temperature test value is greater than the first high temperature test value.

[0071] Please refer to Figure 2 , Figure 2Another flow chart of a method for preventing an empty pot of a cooking utensil from drying out provided by the present invention. In this embodiment, the second time required for the temperature of the pot bottom of the cooking utensil to rise to a preset high temperature range is determined by first controlling the heating device to start working at a second preset power. The present application does not specifically limit the specific value of the second preset power. The second preset power can be slightly less than the first preset power, thereby reducing the heating power in advance to prevent the components in the cooking utensil from being damaged due to excessive temperature. When the temperature of the pot bottom reaches the first high temperature test value, the temperature of the pot bottom is detected in real time or periodically and timing begins, and the timing ends when the temperature of the pot bottom rises to the second high temperature test value, and the second time from the start timing to the end timing is obtained.

[0072] The first high temperature test value and the second high temperature test value are the values ​​of the two endpoints of the preset high temperature range. The present application does not specifically limit the specific values ​​of the first high temperature test value and the second high temperature test value, and can be set according to actual conditions. For example, the first high temperature test value is set to a value between the second low temperature test value and 130 degrees, and the second high temperature test value is between the first high temperature test value and the maximum temperature that the cooking utensil can withstand minus 30 degrees. The second duration can also be set to within 120 seconds.

[0073] In summary, the steps in this embodiment can be used to make a final judgment on whether there is no food placed in the cooking utensil or whether the amount of food is too little, thereby providing a basis for dry-burn protection of the cooking utensil.

[0074] As a preferred embodiment, before controlling the heating device to start working at the second preset power, the method further includes:

[0075] Get the current cooking setting temperature of the cooking appliance;

[0076] Determine whether the cooking setting temperature is less than a preset high temperature detection threshold, and the preset high temperature detection threshold is greater than a second high temperature test value;

[0077] If yes, the step of controlling the heating device to start working at a second preset power is entered;

[0078] If not, the heating device is controlled to start working according to a preset conventional cooking working mode. The preset conventional cooking working mode is to adjust the working power of the heating device according to the current pot bottom temperature, and the current pot bottom temperature is negatively correlated with the working power.

[0079] Please refer to Figure 2 , Figure 2Another flow chart of a method for preventing a cooking utensil from burning dry with an empty pot provided by the present invention. In this embodiment, before controlling the heating device to start working at the second preset power, first obtain the current cooking setting temperature of the cooking utensil, wherein the cooking setting temperature is the temperature set by the user when using the cooking utensil. Determine whether the cooking setting temperature is less than the preset high temperature detection threshold, the high temperature detection threshold is greater than the second high temperature test value, which is the maximum value in the preset high temperature range. If the cooking setting temperature is less than the preset high temperature detection threshold, it is meaningful to perform the above-mentioned high temperature detection process, otherwise control the heating device to start working according to the preset conventional cooking working mode, the preset conventional cooking working mode is a working mode pre-set in the cooking utensil, and the working power of the heating device can be adjusted according to the temperature of the bottom of the pot, and the bottom temperature of the pot is negatively correlated with the working power, so the risk of the cooking utensil burning dry with an empty pot can be avoided to a certain extent.

[0080] It should be noted that in actual applications, the preset high temperature detection threshold may be set relatively high, for example, to a maximum temperature that the cooking appliance can withstand.

[0081] As a preferred embodiment, after restarting the heating device, the method further comprises:

[0082] Get the current pot bottom temperature of the cooking utensil;

[0083] When the current pot bottom temperature is greater than the preset protection temperature, the preset conventional cooking working mode is entered. The preset conventional cooking working mode is to adjust the working power of the heating device according to the current pot bottom temperature, and the current pot bottom temperature is negatively correlated with the working power.

[0084] Please refer to Figure 2 , Figure 2 Another flow chart of a method for preventing an empty pot from burning dry in a cooking utensil provided by the present invention. In this embodiment, when it is determined that there is no food or very little food in the cooking utensil, in addition to controlling the heating device to stop working for a preset protection time to achieve empty pot burning dry protection for the cooking utensil, in order to achieve normal cooking of food, the current pot bottom temperature of the cooking utensil is also obtained, and when the current pot bottom temperature is greater than the preset protection temperature, the heating device is controlled to work according to a preset conventional cooking mode, which is a pre-set working mode in the cooking utensil, and the working power of the heating device can be adjusted according to the pot bottom temperature, and the pot bottom temperature is negatively correlated with the working power, so the risk of empty pot burning dry in the cooking utensil can be avoided to a certain extent.

[0085] As a preferred embodiment, after obtaining the current pot bottom temperature of the cooking utensil, the method further includes:

[0086] When the current pot bottom temperature is not greater than the preset protection temperature, determining whether the current pot bottom temperature is less than the lowest temperature in the preset high temperature range;

[0087] If the current pot bottom temperature is not less than the lowest temperature in the preset high temperature range, the heating device is controlled to work at a third power, and the step of obtaining the current pot bottom temperature of the cooking utensil is entered;

[0088] If the current bottom temperature of the pot is lower than the lowest temperature in the preset high temperature range, the heating device is controlled to operate at the fourth power, and if the second time duration is lower than the preset second time duration threshold, the step of controlling the heating device in the cooking appliance to stop working is entered, and the fourth power is greater than the third power.

[0089] Please refer to Figure 2 , Figure 2 Another flow chart of a method for preventing an empty pot from burning dry in a cooking utensil provided by the present invention. After the present embodiment determines that there may be a risk of an empty pot burning dry, if the current pot bottom temperature is not greater than the preset protection temperature, it is further determined whether the current pot bottom temperature is less than the lowest temperature in the preset high temperature range. If the current pot bottom temperature is not less than the lowest temperature in the preset high temperature range, it proves that the temperature is still very high, so the heating device is controlled to work at the third power; if the current pot bottom temperature is less than the lowest temperature in the preset high temperature range, it proves that the temperature is low, so the heating device is controlled to work at the fourth power, that is, to increase the firepower of the cooking utensil, so it is necessary to ensure that the fourth power is greater than the third power when setting. In addition, the fourth power can also be set to a value less than or equal to the second power, and the preset protection temperature can be set to the difference between the cooking setting temperature and the temperature value between 10 degrees and 20 degrees, wherein the cooking setting temperature is the temperature set by the user when using the cooking utensil.

[0090] Please refer to Figure 3 , Figure 3 A schematic diagram of a system for preventing an empty pot from burning out a cooking utensil is provided by the present invention, the system comprising:

[0091] A first time determination unit 11 is used to determine a first time required for the temperature of the bottom of the cooking utensil to rise to a preset low temperature range;

[0092] A second time determination unit 12 is used to determine a second time required for the temperature of the bottom of the cooking utensil to rise to a preset high temperature range if the first time is less than a preset first time threshold, wherein the lowest temperature included in the preset high temperature range is greater than the highest temperature included in the preset low temperature range;

[0093] The empty pot dry-burning protection unit 13 is used to control the heating device in the cooking appliance to stop working when the second time length is less than a preset second time length threshold, and restart the heating device after the heating device stops working for a preset protection time length.

[0094] For the relevant introduction of a system for preventing a cooking utensil from burning dry with an empty pot provided in the present application, please refer to the above-mentioned embodiment of the method for preventing a cooking utensil from burning dry with an empty pot, and the present application will not elaborate on it here.

[0095] Based on the above embodiments:

[0096] As a preferred embodiment, the first duration determining unit 11 includes:

[0097] A first control unit, used for controlling the heating device to start working at a first preset power;

[0098] The first duration determination subunit is used to start timing when the temperature of the bottom of the pot reaches a first low-temperature test value, stop timing when the temperature of the bottom of the pot reaches a second low-temperature test value, and use the time between the start and end of timing as the first duration, and the second low-temperature test value is greater than the first low-temperature test value.

[0099] As a preferred embodiment, it also includes:

[0100] A first cooking setting temperature acquisition unit, used for acquiring a current cooking setting temperature of the cooking appliance before controlling the heating device to start working at a first preset power;

[0101] A first judgment unit is used to judge whether the cooking setting temperature is less than a preset low temperature detection threshold, and the preset low temperature detection threshold is greater than a second low temperature test value; if so, the first control unit is triggered; if not, the first conventional cooking unit is triggered;

[0102] The first conventional cooking unit is used to control the heating device to start working according to a preset conventional cooking working mode. The preset conventional cooking working mode is to adjust the working power of the heating device according to the current pot bottom temperature, and the current pot bottom temperature is negatively correlated with the working power.

[0103] As a preferred embodiment, the second duration determining unit 12 includes:

[0104] A second control unit, used for controlling the heating device to start working at a second preset power;

[0105] The second time determination subunit is used to start timing when the temperature of the bottom of the pot reaches the first high temperature test value, stop timing when the temperature of the bottom of the pot reaches the second high temperature test value, and use the time between the start timing and the end timing as the second time, and the second high temperature test is greater than the first high temperature test value.

[0106] As a preferred embodiment, it also includes:

[0107] A second cooking setting temperature acquisition unit, used for acquiring a current cooking setting temperature of the cooking appliance before controlling the heating device to start working at a second preset power;

[0108] A second judgment unit is used to judge whether the cooking setting temperature is less than a preset high temperature detection threshold, and the preset high temperature detection threshold is greater than a second high temperature test value; if so, triggering the second control unit; if not, triggering the second conventional cooking unit;

[0109] The second conventional cooking unit is used to control the heating device to start working according to a preset conventional cooking working mode. The preset conventional cooking working mode is to adjust the working power of the heating device according to the current bottom temperature of the pot, and the current bottom temperature of the pot is negatively correlated with the working power.

[0110] As a preferred embodiment, it also includes:

[0111] A current pot bottom temperature acquisition unit, used to acquire the current pot bottom temperature of the cooking utensil after the heating device is restarted;

[0112] The third conventional cooking control unit is used to enter a preset conventional cooking working mode when the current bottom temperature of the pot is greater than the preset protection temperature. The preset conventional cooking working mode is to adjust the working power of the heating device according to the current bottom temperature of the pot, and the current bottom temperature of the pot is negatively correlated with the working power.

[0113] As a preferred embodiment, it also includes:

[0114] A third judgment unit is used to, after obtaining the current pot bottom temperature of the cooking utensil, determine whether the current pot bottom temperature is lower than the lowest temperature in the preset high temperature range when the current pot bottom temperature is not higher than the preset protection temperature; if so, trigger the first working unit; if not, trigger the second working unit;

[0115] The second working unit is used to control the heating device to work at a third power and trigger the current pot bottom temperature acquisition unit;

[0116] The first working unit is used to control the heating device to work at a fourth power and trigger the empty pot dry burning protection unit, and the fourth power is greater than the third power.

[0117] Please refer to Figure 4 , Figure 4 A schematic diagram of a device for preventing an empty pot of a cooking utensil from being dry-burned provided by the present invention, the device comprising:

[0118] A memory 21, used for storing computer programs;

[0119] The processor 22 is used to implement the steps of the above-mentioned method for preventing the cooking utensil from drying out when the cooking utensil is empty when executing the computer program.

[0120] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned method for preventing an empty pot of a cooking utensil from drying out are implemented.

[0121] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0122] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0123] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0124] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for preventing an empty pot of a cooking utensil from drying out, characterized in that: include: Determining a first time required for the temperature of the bottom of the cooking utensil to rise to a preset low temperature range; If the first time duration is less than a preset first time duration threshold, determining a second time duration required for the temperature of the bottom of the cooking utensil to rise to a preset high temperature range, wherein the lowest temperature included in the preset high temperature range is greater than the highest temperature included in the preset low temperature range; If the second time duration is less than a preset second time duration threshold, the heating device in the cooking appliance is controlled to stop working until the heating device stops working for a preset protection time duration, and then the heating device is restarted; In the process of determining the first time length required for the temperature of the bottom of the cooking utensil to rise to the preset low temperature range, the process further includes: controlling the heating device to start working at a first preset power; The process of determining the second time required for the bottom temperature of the cooking utensil to rise to a preset high temperature range also includes: controlling the heating device to start working at a second preset power; wherein the second preset power is greater than the first preset power.

2. The method for preventing an empty pot from burning out a cooking utensil as claimed in claim 1, characterized in that: Determining the first time required for the temperature of the bottom of the cooking appliance to rise to a preset low temperature range includes: The timing starts when the temperature of the bottom of the pot reaches a first low-temperature test value, and stops when the temperature of the bottom of the pot reaches a second low-temperature test value, and the time from the start of the timing to the end of the timing is taken as the first time, and the second low-temperature test value is greater than the first low-temperature test value.

3. The method for preventing an empty pot from burning out a cooking utensil as claimed in claim 2, characterized in that: Before controlling the heating device to start working at the first preset power, the method further comprises: Obtaining the current cooking setting temperature of the cooking appliance; determining whether the cooking setting temperature is less than a preset low temperature detection threshold, and the preset low temperature detection threshold is greater than the second low temperature test value; If yes, the step of controlling the heating device to start working at a first preset power is entered; If not, the heating device is controlled to start working according to a preset conventional cooking working mode, wherein the preset conventional cooking working mode is to adjust the working power of the heating device according to the current pot bottom temperature, and the current pot bottom temperature is negatively correlated with the working power.

4. The method for preventing an empty pot from burning out a cooking utensil as claimed in claim 1, characterized in that: Determining a second time required for the temperature of the bottom of the cooking utensil to rise to a preset high temperature range comprises: Controlling the heating device to start working at a second preset power; The timing starts when the temperature of the bottom of the pot reaches a first high temperature test value, and stops when the temperature of the bottom of the pot reaches a second high temperature test value, and the time from the start of the timing to the end of the timing is taken as the second time length, and the second high temperature test value is greater than the first high temperature test value.

5. The method for preventing an empty pot from burning out a cooking utensil as claimed in claim 4, characterized in that: Before controlling the heating device to start working at the second preset power, the method further comprises: Obtaining the current cooking setting temperature of the cooking appliance; Determining whether the cooking setting temperature is less than a preset high temperature detection threshold, and the preset high temperature detection threshold is greater than the second high temperature test value; If yes, the step of controlling the heating device to start working at a second preset power is entered; If not, the heating device is controlled to start working according to a preset conventional cooking working mode, wherein the preset conventional cooking working mode is to adjust the working power of the heating device according to the current pot bottom temperature, and the current pot bottom temperature is negatively correlated with the working power.

6. The method for preventing a cooking utensil from burning dry when the pot is empty according to any one of claims 1 to 5, characterized in that: After restarting the heating device, the method further comprises: Obtaining the current bottom temperature of the cooking utensil; When the current pot bottom temperature is greater than the preset protection temperature, the preset conventional cooking working mode is entered. The preset conventional cooking working mode is to adjust the working power of the heating device according to the current pot bottom temperature, and the current pot bottom temperature is negatively correlated with the working power.

7. The method for preventing a cooking utensil from burning dry when the pot is empty as claimed in claim 6, characterized in that: After obtaining the current pot bottom temperature of the cooking utensil, the method further includes: When the current pot bottom temperature is not greater than the preset protection temperature, determining whether the current pot bottom temperature is less than the lowest temperature in the preset high temperature range; If the current pot bottom temperature is not less than the lowest temperature in the preset high temperature range, controlling the heating device to work at a third power, and entering the step of obtaining the current pot bottom temperature of the cooking utensil; If the current bottom temperature of the pot is lower than the lowest temperature in the preset high temperature range, the heating device is controlled to operate at a fourth power, and if the second time duration is lower than the preset second time duration threshold, the step of controlling the heating device in the cooking appliance to stop working is entered, and the fourth power is higher than the third power.

8. A system for preventing an empty pot from burning out a cooking utensil, characterized in that: include: A first time determination unit, used to determine a first time required for the temperature of the bottom of the cooking utensil to rise to a preset low temperature range; A second time determination unit is used to determine a second time required for the temperature of the bottom of the cooking utensil to rise to a preset high temperature range if the first time is less than a preset first time threshold, wherein the lowest temperature included in the preset high temperature range is greater than the highest temperature included in the preset low temperature range; an empty pot dry-burning protection unit, used to control the heating device in the cooking appliance to stop working when the second time length is less than a preset second time length threshold, and restart the heating device after the heating device stops working for a preset protection time length; The first duration determination unit is specifically used to control the heating device to start working at a first preset power; The second duration determination unit is specifically used to control the heating device to start working at a second preset power; wherein the second preset power is greater than the first preset power.

9. A device for preventing an empty pot from burning out a cooking utensil, characterized in that: include: Memory for storing computer programs; A processor is used to implement the steps of the method for preventing a cooking utensil from burning dry when the cooking utensil is empty when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for preventing an empty pot of a cooking utensil from drying out are implemented as claimed in any one of claims 1 to 7.

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