Method and device for determining maximum working temperature and electromagnetic heating appliance

Abstract

The invention provides a maximum working temperature determination method and device and an electromagnetic heating appliance. The method comprises the following steps: detecting an input voltage of the electromagnetic heating appliance and a PPG value of a programmable pulse generator; based on the detected target input voltage, a target PPG threshold value set is selected from a plurality of preset PPG threshold value sets, each PPG threshold value set comprises a preset number of different PPG threshold values, and the PPG threshold values in the different PPG threshold value sets are not completely the same; and comparing the detected target PPG value with PPG thresholds in the target PPG threshold set to determine the category of the cookware on the electromagnetic heating appliance, and setting the highest working temperature of the electromagnetic heating appliance according to the category of the cookware. Therefore, on the basis of ensuring the safety, the cookware made of each material can exert the optimal working performance of the cookware.

Description

Technical Field

[0001] The present application relates to home appliance technologies, and particularly to a method and apparatus for determining the maximum operating temperature and an electromagnetic heating appliance. Background Art

[0002] An electromagnetic heating appliance is a common household appliance. When the electromagnetic heating appliance is operating, it uses the high-frequency on-off of a transistor to generate high-frequency alternating current on a heating coil, and then performs resonance to heat a cookware.

[0003] In many usage scenarios, such as when the cookware is dry-heated or hot oil is used, the temperature of the panel of the electromagnetic heating appliance is likely to exceed its maximum heat resistance. In order to perform overheat protection, it is necessary to set the maximum operating temperature of the electromagnetic heating appliance. When the maximum operating temperature is reached, the electromagnetic heating appliance needs to reduce the heating power or stop heating.

[0004] When using cookwares made of different materials, the temperatures reached by the panel of the electromagnetic heating appliance may be different. In order to ensure safety when using any material of cookware, the maximum operating temperature of the electromagnetic heating appliance is set according to the most unfavorable cookware material conditions, and the value of the maximum operating temperature is relatively low, which causes many materials of cookwares not to fully exert their working performance. Summary of the Invention

[0005] The present application provides a method and apparatus for determining the maximum operating temperature and an electromagnetic heating appliance, which enable each material of cookware to exert its best working performance on the basis of ensuring safety.

[0006] In a first aspect, the present application provides a method for determining the maximum operating temperature, which is applied to an electromagnetic heating appliance and includes:

[0007] Detecting the input voltage and the programmable pulse generator (PPG) value of the electromagnetic heating appliance;

[0008] Based on the detected target input voltage, selecting a target PPG threshold set from a plurality of preset PPG threshold sets, where each PPG threshold set includes a preset number of different PPG thresholds, and the PPG thresholds in different PPG threshold sets are not completely the same;

[0009] Comparing the detected target PPG value with the PPG thresholds in the target PPG threshold set to determine the category of the cookware on the electromagnetic heating appliance, and setting the maximum operating temperature of the electromagnetic heating appliance according to the category of the cookware.

[0010] Determining the material category of the cookware based on the input voltage and the PPG value of the electromagnetic heating appliance, and setting the corresponding maximum operating temperature, which enables each material of cookware to exert its best working performance on the basis of ensuring the safety of the electromagnetic heating appliance.

[0011] In one implementation, detecting the input voltage and the programmable pulse generator (PPG) value of the electromagnetic heating appliance includes:

[0012] Detecting the input voltage and the programmable pulse generator (PPG) value of the electromagnetic heating appliance at a preset time interval;

[0013] The target input voltage and the target PPG value are the input voltage and the PPG value detected most recently; before selecting the target PPG threshold set from a preset plurality of PPG threshold sets based on the detected target input voltage, the method further includes:

[0014] Controlling the electromagnetic heating appliance to heat at a preset power for a preset duration.

[0015] Controlling the electromagnetic heating appliance to heat at a preset power for a period of time so that the PPG value of the electromagnetic heating appliance tends to be stable, and then determining the material category of the cookware based on the target input voltage and the target PPG value detected most recently, and setting the corresponding maximum operating temperature, so that each material of cookware can exert its best operating performance on the basis of ensuring the safety of the electromagnetic heating appliance.

[0016] In one implementation, the target PPG threshold set includes N PPG thresholds, which are the first PPG threshold, the second PPG threshold, and up to the Nth PPG threshold that increase in sequence;

[0017] Comparing the detected target PPG value with the PPG thresholds in the target PPG threshold set to determine the category of the cookware on the electromagnetic heating appliance, and setting the maximum operating temperature of the electromagnetic heating appliance according to the category of the cookware, includes:

[0018] If the target PPG value is less than or equal to the first PPG threshold, determining that the category of the cookware is the first category, and setting the maximum operating temperature of the electromagnetic heating appliance to the first temperature corresponding to the first category;

[0019] If the target PPG value is greater than the (n - 1)th PPG threshold and less than or equal to the nth threshold, determining that the category of the cookware is the nth category, and setting the maximum operating temperature of the electromagnetic heating appliance to the nth temperature corresponding to the nth category, where n is an integer between 2 and N;

[0020] If the target PPG value is greater than the Nth PPG threshold, setting the maximum operating temperature of the electromagnetic heating appliance to the Nth temperature, where the first temperature to the Nth temperature decrease in sequence.

[0021] In one implementation, the step of setting the maximum operating temperature of the electromagnetic heating appliance to the Nth temperature when the target PPG value is greater than the Nth PPG threshold includes:

[0022] If the target PPG value is greater than the Nth PPG threshold, and the time from when the electromagnetic heating appliance starts heating at a preset power for a preset duration to the current moment does not exceed the third preset duration, then repeatedly execute the steps of selecting a target PPG threshold set from a preset plurality of PPG threshold sets based on the detected target input voltage, and comparing the detected target PPG value with the PPG thresholds in the target PPG threshold set until the type of the cookware is determined, or until the third preset duration is exceeded, and then set the maximum operating temperature of the electromagnetic heating appliance to the Nth temperature.

[0023] In one implementation, the step of controlling the electromagnetic heating appliance to heat at a preset power for a preset duration includes:

[0024] After the electromagnetic heating appliance is started, if the detected PPG value is greater than or equal to a preset cookware detection PPG threshold, then control the electromagnetic heating appliance to heat at a preset power for a preset duration.

[0025] Checking for the presence of a cookware by using the PPG value of the electromagnetic heating appliance, and controlling the electromagnetic heating appliance to heat when it is determined that there is a cookware on the electromagnetic heating appliance, which ensures safety.

[0026] In one implementation, the step of controlling the electromagnetic heating appliance to heat at a preset power for a preset duration includes:

[0027] Control the electromagnetic heating appliance to heat at the maximum power of the electromagnetic heating appliance for a first preset duration, and then continue to control the electromagnetic heating appliance to heat at a first preset power less than the maximum power for a second preset duration.

[0028] Controlling the electromagnetic heating appliance to heat for a period of time at the maximum power and the first preset power respectively, so that the PPG value of the electromagnetic heating appliance tends to be stable, which improves the accuracy of the result.

[0029] In a second aspect, the present application provides a device for determining the maximum operating temperature, which is applied to an electromagnetic heating appliance and includes:

[0030] A detection module, configured to detect the input voltage and the programmable pulse generator (PPG) value of the electromagnetic heating appliance;

[0031] A selection module, configured to select a target PPG threshold set from a plurality of preset PPG threshold sets based on the detected target input voltage. Each PPG threshold set includes a preset number of different PPG thresholds, and the PPG thresholds in different PPG threshold sets are not exactly the same;

[0032] A determination module, configured to compare the detected target PPG value with the PPG thresholds in the target PPG threshold set to determine the category of the cookware on the electromagnetic heating appliance, and set the maximum operating temperature of the electromagnetic heating appliance according to the category of the cookware.

[0033] In one implementation, the detection module is configured to:

[0034] Detect the input voltage and the programmable pulse generator (PPG) value of the electromagnetic heating appliance at a preset time interval;

[0035] The target input voltage and the target PPG value are the most recently detected input voltage and PPG value; The apparatus further includes:

[0036] A control module, configured to control the electromagnetic heating appliance to heat at a preset power for a preset duration.

[0037] In one implementation, the target PPG threshold set includes N PPG thresholds, which are respectively the first PPG threshold, the second PPG threshold, up to the Nth PPG threshold that increase in sequence;

[0038] The determination module is configured to:

[0039] If the target PPG value is less than or equal to the first PPG threshold, determine that the category of the cookware is the first category, and set the maximum operating temperature of the electromagnetic heating appliance to the first temperature corresponding to the first category;

[0040] If the target PPG value is greater than the (n - 1)th PPG threshold and less than or equal to the nth threshold, determine that the category of the cookware is the nth category, and set the maximum operating temperature of the electromagnetic heating appliance to the nth temperature corresponding to the nth category, where n is an integer between 2 and N;

[0041] If the target PPG value is greater than the Nth PPG threshold, set the maximum operating temperature of the electromagnetic heating appliance to the Nth temperature, where the first temperature to the Nth temperature decrease in sequence.

[0042] In one implementation, the determination module is configured to:

[0043] If the target PPG value is greater than the Nth PPG threshold, and the time from when the electromagnetic heating appliance starts heating at a preset power for a preset duration to the current moment does not exceed the third preset duration, then repeat the steps of selecting a target PPG threshold set from a preset plurality of PPG threshold sets based on the detected target input voltage, and comparing the detected target PPG value with the PPG thresholds in the target PPG threshold set until the type of cookware is determined, or until after exceeding the third preset duration, set the maximum operating temperature of the electromagnetic heating appliance to the Nth temperature.

[0044] In one implementation, the control module is configured to:

[0045] After the electromagnetic heating appliance is started, if the detected PPG value is greater than or equal to a preset cookware detection PPG threshold, then control the electromagnetic heating appliance to heat at a preset power for a preset duration.

[0046] In one implementation, the control module is configured to:

[0047] Control the electromagnetic heating appliance to heat at the maximum power of the electromagnetic heating appliance for a first preset duration, and then continue to control the electromagnetic heating appliance to heat at a first preset power less than the maximum power for a second preset duration.

[0048] In a third aspect, the present application provides an electromagnetic heating appliance, including a memory and a processor, the memory and the processor are connected;

[0049] The memory is used to store a computer program;

[0050] The processor is configured to implement the method as described in the first aspect when the computer program is executed.

[0051] In a fourth aspect, the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method as described in the first aspect above is implemented.

[0052] In a fifth aspect, the present application provides a computer program product, including a computer program, and when the computer program is executed by a processor, the method as described in the first aspect is implemented.

[0053] The present application provides a method, device and electromagnetic heating appliance for determining the maximum operating temperature. This method identifies cookware of different materials based on the input voltage and PPG value of the electromagnetic heating appliance, and then can set the corresponding maximum operating temperature for the electromagnetic heating appliance according to the type of cookware. On the basis of ensuring safety, each type of cookware can exert its best working performance. Description of the Drawings

[0054] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0055] Figure 1 Flow schematic of a method for determining the maximum operating temperature provided by an embodiment of the present application Figure 1 ;

[0056] Figure 2 Flow schematic of a method for determining the maximum operating temperature provided by an embodiment of the present application Figure 2 ;

[0057] Figure 3 Structural schematic diagram of a device for determining the maximum operating temperature provided by an embodiment of the present application;

[0058] Figure 4 Structural schematic diagram of an electromagnetic heating appliance provided by an embodiment of the present application. Detailed implementation manners

[0059] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0060] Taking an electromagnetic heating appliance as an induction cooker, and using a stainless steel pot, an iron pot, and an aluminum composite bottom pot to heat on the induction cooker respectively as an example, the temperature of the induction cooker panel is the highest when the stainless steel pot is dry burned and hot oiled. To ensure safety, the maximum operating temperature of the induction cooker is set according to the stainless steel pot, which results in the underutilization of the performance of pots such as iron pots and aluminum composite bottom pots. That is to say, the maximum operating temperature of the electromagnetic heating appliance is set according to the most unfavorable pot material conditions, resulting in the underutilization of the working performance of pots made of other materials.

[0061] To this end, in the embodiments of the present application, it is considered that when the input voltage of the electromagnetic heating appliance is constant, the Program Pulse Generator (PPG) values of cookware made of different materials will be different, and for cookware made of the same material, the PPG values are also different under different input voltages. Therefore, the input voltage of the electromagnetic heating appliance and the PPG value can be combined to identify cookware made of different materials, and then the corresponding maximum operating temperature can be set for the electromagnetic heating appliance according to the type of cookware, so that each type of cookware can exert its best operating performance.

[0062] The following uses specific embodiments to illustrate in detail the method for determining the maximum operating temperature provided by the present application. It can be understood that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0063] Figure 1 Flow diagram of a method for determining the maximum operating temperature provided by an embodiment of the present application Figure 1 The execution subject of this method is a device for determining the maximum operating temperature. This device can be implemented by software and / or hardware. For example, this device can be a controller of an electromagnetic heating appliance. As Figure 1 shown, this method includes:

[0064] S101. Detect the input voltage and PPG value of the electromagnetic heating appliance.

[0065] The input voltage of the electromagnetic heating appliance refers to the mains voltage input to the electromagnetic heating appliance. For example, the range of the input voltage is between AC187V and AC 253V. The PPG value is used to control the conduction width of the Insulate-Gate Bipolar Transistor (IGBT) of the electromagnetic heating appliance to achieve power control. For example, when the actual power is less than the target power, the PPG value is increased, and when the actual power is greater than the target power, the PPG value is decreased.

[0066] S102. Based on the detected target input voltage, select a target PPG threshold set from a plurality of preset PPG threshold sets. Each PPG threshold set includes a preset number of different PPG thresholds, and the PPG thresholds in different PPG threshold sets are not completely the same.

[0067] Since the Programmable Pulse Generator (PPG) values of cookware made of different materials vary when the input voltage is constant, and for cookware of the same material, the PPG values also differ under different input voltages, the preset multiple PPG threshold sets are for different input voltages. For example, as shown in Table 1 below, Cookware 1, Cookware 2 up to Cookware N represent cookware made of different materials. Under different input voltages VCC, each type of cookware has corresponding PPG thresholds. The multiple PPG thresholds under one input voltage VCC form a PPG threshold set. For example, the threshold set [VCC1_FZ1, VCC1_FZ2, …, VCC1_FZN] corresponding to the input voltage VCC1, and the threshold set [VCCm_FZ1, VCCm_FZ2, …, VCCm_FZN] corresponding to the input voltage VCCm. It should be noted that for VCC1, VCC2 up to VCCm, each VCC can represent either a voltage value or a voltage value range.

[0068] Table 1

[0069] Voltage PPG Threshold of Cookware 1 PPG Threshold of Cookware 2 … PPG Threshold of Cookware N VCC1 VCC1_FZ1 VCC1_FZ2 … VCC1_FZN VCC2 VCC2_FZ1 VCC2_FZ2 … VCC2_FZN … … … … … VCCm VCCm_FZ1 VCCm_FZ2 … VCCm_FZN

[0070] The preset multiple PPG threshold sets can be obtained through pre-tests. For the detected target input voltage, it is matched with the input voltages corresponding to the preset multiple PPG threshold sets respectively, so as to select the target PPG threshold set from the multiple PPG threshold sets. For example, if the target input voltage is the same as VCC or the target input voltage is within the input voltage range represented by VCC, then the threshold set [VCC_FZ1, VCC_FZ2, …, VCC_FZN] corresponding to VCC is determined as the target PPG threshold set.

[0071] S103. Compare the detected target PPG value with the PPG thresholds in the target PPG threshold set to determine the type of cookware on the electromagnetic heating appliance, and set the maximum operating temperature of the electromagnetic heating appliance according to the type of cookware.

[0072] Compare the detected target PPG value with the PPG thresholds in the target PPG threshold set. Based on the magnitude relationship between the target PPG value and the PPG thresholds, determine which material the cookware on the electromagnetic heating appliance belongs to, that is, determine the type of cookware. Then, based on the material of the cookware, set the maximum operating temperature of the electromagnetic heating appliance. For example, if the material of the cookware is stainless steel, set the maximum operating temperature of the electromagnetic heating appliance to a relatively low value; if the material of the cookware is iron, set the maximum operating temperature of the electromagnetic heating appliance to a relatively high value.

[0073] The method provided by the embodiment of the present application identifies cookware of different materials based on the input voltage and PPG value of the electromagnetic heating appliance, and then can set the corresponding maximum operating temperature for the electromagnetic heating appliance according to the type of cookware. On the basis of ensuring safety, the cookware of each material can exert its best operating performance.

[0074] On the basis of the above embodiment, in order to more accurately judge the type of cookware, after the electromagnetic heating appliance has been stably heated for a period of time, the type of cookware can be determined based on the detected input voltage and PPG value.

[0075] Optionally, after the electromagnetic heating appliance starts the function, the input voltage and PPG value of the electromagnetic heating appliance are detected at preset time intervals. And after starting the function, the electromagnetic heating appliance is controlled to heat at a preset power for a preset duration. Then, based on the detected target input voltage, a target PPG threshold set is selected from a plurality of preset PPG threshold sets, and the detected target PPG value is compared with the PPG thresholds in the target PPG threshold set to determine the type of cookware on the electromagnetic heating appliance.

[0076] Optionally, controlling the electromagnetic heating appliance to heat at a preset power for a preset duration includes: controlling the electromagnetic heating appliance to heat at the maximum power of the electromagnetic heating appliance for a first preset duration, and then continuing to control the electromagnetic heating appliance to heat at a first preset power less than the maximum power for a second preset duration, that is, the preset duration includes the first preset duration and the second preset duration. Controlling the electromagnetic heating appliance to heat in the above manner can make the PPG value of the electromagnetic heating appliance reach a relatively stable value as soon as possible.

[0077] It should be noted that the plurality of preset PPG threshold sets are obtained by controlling the heating under the same conditions as above. That is to say, when testing to obtain a plurality of PPG threshold sets, the electromagnetic heating appliance is also controlled to heat at a preset power for a preset duration after starting the function. For example, controlling the electromagnetic heating appliance to heat at the maximum power of the electromagnetic heating appliance for a first preset duration, and then continuing to control the electromagnetic heating appliance to heat at a first preset power less than the maximum power for a second preset duration to obtain the PPG thresholds.

[0078] It can be understood that after this preset duration, the electromagnetic heating appliance continues to heat at the first preset power.

[0079] Since the comparison of the target input voltage and the target PPG value is only performed after the electromagnetic heating appliance has heated for a preset duration at a preset power, the target input voltage and the target PPG value are the input voltage and the PPG value detected most recently. That is to say, the electromagnetic heating appliance continuously detects the input voltage and the PPG value at preset time intervals, and each time these two values are needed, the most recently detected values are obtained.

[0080] For example, the target PPG threshold set includes N PPG thresholds, which are the first PPG threshold, the second PPG threshold, and so on up to the Nth PPG threshold in increasing order. The following describes how to determine the type of cookware based on the target PPG value and the target PPG threshold set, and set the maximum operating temperature of the electromagnetic heating appliance according to the type of cookware.

[0081] If the target PPG value is less than or equal to the first PPG threshold, it is determined that the type of cookware is the first type, and the maximum operating temperature of the electromagnetic heating appliance is set to the first temperature corresponding to the first type.

[0082] If the target PPG value is greater than the (n - 1)th PPG threshold and less than or equal to the nth threshold, it is determined that the type of cookware is the nth type, and the maximum operating temperature of the electromagnetic heating appliance is set to the nth temperature corresponding to the nth type, where n is an integer between 2 and N.

[0083] If the target PPG value is greater than the Nth PPG threshold, the maximum operating temperature of the electromagnetic heating appliance is set to the Nth temperature, where the first temperature to the Nth temperature decrease in sequence.

[0084] It can be seen from the above embodiments that the type of cookware can be determined based on the range where the target PPG value is located. However, there may also be a situation where the type of cookware cannot be determined when the target PPG value is too large. In this case, according to the most unfavorable cookware material conditions, the maximum operating temperature of the electromagnetic heating appliance is set to the lowest maximum operating temperature. On this basis, optionally, in order to fully detect the type of cookware, a certain duration can be set, and within this duration, the detection and judgment can be repeated multiple times. If the type of cookware still cannot be determined after exceeding this duration, then according to the most unfavorable cookware material conditions, the maximum operating temperature of the electromagnetic heating appliance is set to the lowest maximum operating temperature.

[0085] Optionally, if the target PPG value is greater than the Nth PPG threshold, and the time from when the electromagnetic heating appliance starts heating at a preset power for a preset duration to the current moment does not exceed the third preset duration, then repeat the steps of selecting a target PPG threshold set from a preset plurality of PPG threshold sets based on the detected target input voltage, and comparing the detected target PPG value with the PPG thresholds in the target PPG threshold set until the type of cookware is determined, or until after exceeding the third preset duration, set the maximum operating temperature of the electromagnetic heating appliance to the Nth temperature.

[0086] The following is an example description with reference to Figure 2 the flowchart shown.

[0087] As Figure 2 shown, after the electromagnetic heating appliance selection function starts, the input voltage VCC and the PPG value are detected at a preset time interval ΔT. If the detected PPG value is greater than or equal to the preset cookware detection PPG threshold NUM, then control the electromagnetic heating appliance to heat at a preset power for a preset duration. Among them, the detected PPG value being greater than or equal to the preset cookware detection PPG threshold NUM means that there is a cookware placed on the electromagnetic heating appliance. In the case of detecting a cookware, the electromagnetic heating appliance continues to execute the subsequent steps. Optionally, 20 < NUM < 80.

[0088] Within the first preset duration, that is, the t1 stage, the electromagnetic heating appliance heats at the maximum power POWER_MAX. After that, within the second preset duration, that is, the t2 stage, the electromagnetic heating appliance heats at the first preset power POWER_X. Optionally, 6s < t1 < 12s, 10s < t2 < 15s, 1000W < POWER_X < 1500W.

[0089] After that, within the third preset duration, i.e., the t3 stage, the electromagnetic heating appliance still heats at the first preset power, and determines the type of cookware based on the most recently detected target input voltage and target PPG value. Specifically, it includes selecting a target threshold set based on the target input voltage. For example, [VCC_FZ1, VCC_FZ2, …, VCC_FZN], comparing the target PPG value with the PPG thresholds in the target threshold set in sequence, and making judgments in ascending order of the PPG thresholds. If the target PPG value is less than or equal to VCC_FZ1, it is identified as cookware 1, and the maximum operating temperature is set to the first temperature WORKTEMP_MAX1. If the target PPG value is greater than VCC_FZ1 and less than or equal to VCC_FZ2, it is identified as cookware 2, and the maximum operating temperature is set to the second temperature WORKTEMP_MAX2. If the target PPG value is greater than VCC_FZ2 and less than or equal to VCC_FZN, it is identified as cookware n, and the maximum operating temperature is set to the Nth temperature WORKTEMP_MAXN. If the target PPG value is greater than VCC_FZN, it is determined whether the third preset duration has elapsed, i.e., whether the t3 stage has ended. If not, the type of cookware is determined again based on the newly detected most recent target input voltage and target PPG value, and this is repeated until the type of cookware is determined and the corresponding maximum operating temperature is set, or until the third preset duration has elapsed, i.e., the t3 stage has ended. At this time, the maximum operating temperature is set to the Nth temperature WORKTEMP_MAXN according to the worst cookware material conditions. Exemplarily, 8s < t3 < 12s.

[0090] The method provided by the embodiment of the present application detects the cookware through the PPG value of the electromagnetic heating appliance. When it is determined that there is a cookware placed on the electromagnetic heating appliance, the electromagnetic heating appliance is controlled to heat at the maximum power and the first preset power for a period of time respectively, so that the PPG value of the electromagnetic heating appliance tends to be stable. Then, based on the most recently detected target input voltage and target PPG value, the material type of the cookware is determined, and the corresponding maximum operating temperature is set. On the basis of ensuring the safety of the electromagnetic heating appliance, each type of cookware can exert its best working performance.

[0091] Figure 3 It is a structural schematic diagram of a device for determining the maximum operating temperature provided by the embodiment of the present application. As Figure 3 shown, the device 300 for determining the maximum operating temperature includes:

[0092] A detection module 301, configured to detect the input voltage and the programmable pulse generator PPG value of the electromagnetic heating appliance;

[0093] A selection module 302, configured to select a target PPG threshold set from a plurality of preset PPG threshold sets based on the detected target input voltage. Each PPG threshold set includes a preset number of different PPG thresholds, and the PPG thresholds in different PPG threshold sets are not exactly the same.

[0094] A determination module 303, configured to compare the detected target PPG value with the PPG thresholds in the target PPG threshold set to determine the category of the cookware on the electromagnetic heating appliance, and set the maximum operating temperature of the electromagnetic heating appliance according to the category of the cookware.

[0095] In one implementation, the detection module 301 is configured to:

[0096] Detect the input voltage and the programmable pulse generator (PPG) value of the electromagnetic heating appliance at a preset time interval.

[0097] The target input voltage and the target PPG value are the most recently detected input voltage and PPG value. The apparatus further includes:

[0098] A control module, configured to control the electromagnetic heating appliance to heat at a preset power for a preset duration.

[0099] In one implementation, the target PPG threshold set includes N PPG thresholds, which are respectively the first PPG threshold, the second PPG threshold, and up to the Nth PPG threshold that increase in sequence.

[0100] The determination module 303 is configured to:

[0101] If the target PPG value is less than or equal to the first PPG threshold, determine that the category of the cookware is the first category, and set the maximum operating temperature of the electromagnetic heating appliance to the first temperature corresponding to the first category.

[0102] If the target PPG value is greater than the (n - 1)th PPG threshold and less than or equal to the nth threshold, determine that the category of the cookware is the nth category, and set the maximum operating temperature of the electromagnetic heating appliance to the nth temperature corresponding to the nth category, where n is an integer between 2 and N.

[0103] If the target PPG value is greater than the Nth PPG threshold, set the maximum operating temperature of the electromagnetic heating appliance to the Nth temperature, where the first temperature to the Nth temperature decrease in sequence.

[0104] In one implementation, the determination module 303 is configured to:

[0105] If the target PPG value is greater than the Nth PPG threshold, and the time from when the electromagnetic heating appliance starts heating at a preset power for a preset duration until the current moment does not exceed the third preset duration, then repeat the steps of selecting a target PPG threshold set from a preset plurality of PPG threshold sets based on the detected target input voltage, and comparing the detected target PPG value with the PPG thresholds in the target PPG threshold set until the type of cookware is determined, or until after exceeding the third preset duration, set the maximum operating temperature of the electromagnetic heating appliance to the Nth temperature.

[0106] In one implementation, the control module is configured to:

[0107] After the electromagnetic heating appliance is started, if the detected PPG value is greater than or equal to the preset cookware detection PPG threshold, then control the electromagnetic heating appliance to heat at a preset power for a preset duration.

[0108] In one implementation, the control module is configured to:

[0109] Control the electromagnetic heating appliance to heat at the maximum power of the electromagnetic heating appliance for a first preset duration, and then continue to control the electromagnetic heating appliance to heat at a first preset power less than the maximum power for a second preset duration.

[0110] The device in the embodiments of the present application can be used to implement the method for determining the maximum operating temperature in any of the foregoing embodiments. The implementation principle and technical effects are similar, and will not be elaborated here.

[0111] Figure 4 It is a schematic structural diagram of an electromagnetic heating appliance provided by an embodiment of the present application. As Figure 4 shown, the electromagnetic heating appliance 400 includes a memory 401 and a processor 402, and the memory 401 and the processor 402 are connected through a bus 403.

[0112] The memory 401 is used to store computer programs.

[0113] The processor 402 is configured to implement the method for determining the maximum operating temperature in any of the foregoing embodiments when the computer program is executed.

[0114] The embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method for determining the maximum operating temperature in any of the foregoing embodiments is implemented.

[0115] The embodiments of the present application further provide a computer program product, including a computer program. When the computer program is executed by a processor, the method for determining the maximum operating temperature in any of the foregoing embodiments is implemented.

[0116] Optionally, the foregoing processor may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps in the method embodiments disclosed in conjunction with the present application may be directly embodied as being executed and completed by a hardware processor, or may be executed and completed by a combination of hardware and software modules in the processor.

[0117] Those of ordinary skill in the art can understand that all or part of the steps for implementing the foregoing method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the foregoing method embodiments; and the foregoing storage medium includes: various media such as ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0118] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for determining the maximum operating temperature, characterized in that, applied to an electromagnetic heating appliance, including: detecting the input voltage and the programmable pulse generator (PPG) value of the electromagnetic heating appliance; based on the detected target input voltage, selecting a target PPG threshold set from a plurality of preset PPG threshold sets, each PPG threshold set includes a preset number of different PPG thresholds, and the PPG thresholds in different PPG threshold sets are not completely the same; comparing the detected target PPG value with the PPG thresholds in the target PPG threshold set to determine the type of cookware on the electromagnetic heating appliance, and setting the maximum operating temperature of the electromagnetic heating appliance according to the type of cookware.

2. The method according to claim 1, characterized in that, the detecting the input voltage and the programmable pulse generator (PPG) value of the electromagnetic heating appliance includes: detecting the input voltage and the programmable pulse generator (PPG) value of the electromagnetic heating appliance at a preset time interval; the target input voltage and the target PPG value are the most recently detected input voltage and PPG value; before selecting the target PPG threshold set from a plurality of preset PPG threshold sets based on the detected target input voltage, the method further includes: controlling the electromagnetic heating appliance to heat at a preset power for a preset duration.

3. The method according to claim 2, characterized in that, the target PPG threshold set includes N PPG thresholds, which are the first PPG threshold, the second PPG threshold, and up to the Nth PPG threshold that increase in sequence; the comparing the detected target PPG value with the PPG thresholds in the target PPG threshold set to determine the type of cookware on the electromagnetic heating appliance, and setting the maximum operating temperature of the electromagnetic heating appliance according to the type of cookware includes: if the target PPG value is less than or equal to the first PPG threshold, determining that the type of cookware is the first type, and setting the maximum operating temperature of the electromagnetic heating appliance to the first temperature corresponding to the first type; if the target PPG value is greater than the (n - 1)th PPG threshold and less than or equal to the nth threshold, determining that the type of cookware is the nth type, and setting the maximum operating temperature of the electromagnetic heating appliance to the nth temperature corresponding to the nth type, where n is an integer between 2 and N; if the target PPG value is greater than the Nth PPG threshold, setting the maximum operating temperature of the electromagnetic heating appliance to the Nth temperature, where the first temperature to the Nth temperature decrease in sequence.

4. The method according to claim 3, characterized in that, the if the target PPG value is greater than the Nth PPG threshold, setting the maximum operating temperature of the electromagnetic heating appliance to the Nth temperature includes: If the target PPG value is greater than the Nth PPG threshold, and the time from when the electromagnetic heating appliance starts heating at a preset power for a preset duration to the current moment does not exceed a third preset duration, then repeat the steps of selecting a target PPG threshold set from a preset plurality of PPG threshold sets based on the detected target input voltage, and comparing the detected target PPG value with the PPG thresholds in the target PPG threshold set until the type of cookware is determined, or until after exceeding the third preset duration, set the maximum operating temperature of the electromagnetic heating appliance to the Nth temperature.

5. The method according to any one of claims 2-4, wherein, the controlling the electromagnetic heating appliance to heat at a preset power for a preset duration includes: after the electromagnetic heating appliance is started, if the detected PPG value is greater than or equal to a preset pan detection PPG threshold, then control the electromagnetic heating appliance to heat at a preset power for a preset duration.

6. The method according to any one of claims 2-4, wherein, the controlling the electromagnetic heating appliance to heat at a preset power for a preset duration includes: controlling the electromagnetic heating appliance to heat at the maximum power of the electromagnetic heating appliance for a first preset duration, and then continuing to control the electromagnetic heating appliance to heat at a first preset power less than the maximum power for a second preset duration.

7. A device for determining the maximum operating temperature, wherein, applied to an electromagnetic heating appliance, includes: a detection module, configured to detect the input voltage and the programmable pulse generator (PPG) value of the electromagnetic heating appliance; a selection module, configured to select a target PPG threshold set from a preset plurality of PPG threshold sets based on the detected target input voltage, each PPG threshold set includes a preset number of different PPG thresholds, and the PPG thresholds in different PPG threshold sets are not completely the same; a determination module, configured to compare the detected target PPG value with the PPG thresholds in the target PPG threshold set to determine the type of cookware on the electromagnetic heating appliance, and set the maximum operating temperature of the electromagnetic heating appliance according to the type of cookware.

8. An electromagnetic heating appliance, wherein, includes a memory and a processor, and the memory is connected to the processor; the memory is used to store a computer program; the processor is configured to, when the computer program is executed, implement the method according to any one of claims 1-6.

9. A computer-readable storage medium, on which a computer program is stored, wherein, when the computer program is executed by a processor, it implements the method according to any one of claims 1-6.

10. A computer program product, wherein, includes a computer program, and when the computer program is executed by a processor, it implements the method according to any one of claims 1-6.

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