Intelligent electric ceramic stove

Abstract

This utility model discloses an intelligent electric ceramic stove, comprising: a cookware water level detection device for detecting the placement of the cookware at the heating position and the water level inside the cookware, and outputting a capacitance value detection signal; an infrared temperature measurement module for detecting the temperature of the cookware and outputting a temperature signal; a heating component for converting electrical energy into heat energy; a fan cooling component for dissipating heat inside the electric ceramic stove; and a water filling component for adding water to the cookware. The infrared temperature measurement module is positioned above the ceramic stove's crystal plate and next to the cookware. The infrared temperature measurement module transmits the detected cookware temperature information to the intelligent main control module, enabling intelligent control of the water temperature inside the cookware. The cookware water level detection device transmits the detected information to the intelligent main control module. Through the cookware detection function, it can detect in real time whether there is a cookware at the heating position of the electric ceramic stove. When there is no cookware or when heating is underway, heating is stopped after the cookware is removed, preventing the risk of fire caused by the high temperature radiated outwards by the electric ceramic stove when there is no cookware.

Description

Technical Field

[0001] This utility model belongs to the field of smart home appliance technology, specifically relating to a smart electric ceramic stove. Background Technology

[0002] An electric ceramic cooktop is a household appliance that converts electrical energy into heat energy using the heating effect of electric current. The heat generated by the heating plate is first conducted to the microcrystalline plate, and then to the cookware. When the electric ceramic cooktop is heating, the surface temperature of the microcrystalline plate usually exceeds 500°C. Current technology does not test whether there is cookware on the cooktop surface. It can heat up even without cookware on the cooktop surface. There is a possibility that the high temperature of the cooktop surface will radiate heat to flammable materials around the electric ceramic cooktop, thereby igniting flammable materials and causing a fire.

[0003] Electric ceramic stoves are not picky about cookware. Users can use glass or ceramic cookware to boil water, brew tea, make soup, or decoct medicine. However, existing electric ceramic stoves on the market do not have a water level detection function. When there is no water in the cookware, the water has boiled dry, or the water has been poured out by the user, the stove continues to heat, causing the cookware to burn dry, which can easily damage the cookware or cause a fire hazard.

[0004] The heating mode of an electric ceramic cooktop involves first heating the microcrystalline plate, and then transferring the heat to the cookware through the microcrystalline plate. There is no electrical connection between the electric ceramic cooktop and the cookware, so a temperature sensor cannot be directly attached to the cookware to detect its temperature. Therefore, electric ceramic cooktops on the market do not detect the temperature of the cookware and cannot intelligently control the temperature of the cookware. They simply use a timed heating method, initially operating at high power for a period of time, and then switching to low power or stopping heating after the set time is up. Because the amount of water being heated in the cookware is uncertain, heating may stop prematurely before the set temperature is reached when there is a lot of water, or continue heating at high power after the set temperature is reached when there is a little water, causing the water to boil over or dry-boil. Utility Model Content

[0005] The purpose of this invention is to provide an intelligent electric ceramic stove to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an intelligent electric ceramic stove, comprising:

[0007] The cookware water level detection device is used to detect the placement of the cookware at the heating position and the water level inside the cookware, and outputs a capacitance value detection signal;

[0008] Infrared temperature measurement module is used to detect the temperature of the cookware and output a temperature signal;

[0009] The key control module is used for user input and display of working status;

[0010] The intelligent main control module is connected to the cookware water level detection device, infrared temperature measurement module and display key control module. It is used to receive capacitance value and temperature signal and control heating, heat dissipation and water replenishment actions.

[0011] The heating component is used to convert electrical energy into heat energy and is controlled by the intelligent main control module;

[0012] The fan cooling component is used for heat dissipation inside the electric ceramic cooker and is controlled by the intelligent main control module;

[0013] The water filling component is used to add water to the pot and is controlled by the intelligent main control module.

[0014] Preferably, the infrared temperature measurement module is installed on the ceramic cooker plate next to the cookware. The infrared temperature measurement module transmits the detected cookware temperature information to the intelligent main control module for intelligent control of the water temperature inside the pot.

[0015] Preferably, the heating assembly includes a metal housing that serves as a capacitive sensor for the cookware water level detection device and a heating element. The metal housing is connected to the cookware and water level detection port of the intelligent main control module to detect cookware and water level information.

[0016] Preferably, a relay, a capacitor, and a relay are connected in series at both ends of the heating element. When the two ends of the heating element are connected to the L and N terminals of the mains power, the equivalent capacitance is coupled to the pot water level detection device. This coupling capacitance value is large and variable. Therefore, when the pot and water level are detected before heating begins or during heating, when no pot is detected, when a pot is lifted, or when the pot and water level are detected after no water is detected, the relays connected in series at both ends of the heating element are in the open state.

[0017] Preferably, the intelligent main control module controls the heating components to regulate the pot temperature when there is a pot at the heating position of the electric ceramic stove and the water level in the pot is greater than the anti-dry-burning threshold, based on the pot information, water level information, and pot temperature information.

[0018] Preferably, when the user lifts the pot to pour water while the ceramic cooker is in heating mode and puts it back within a preset time, the ceramic cooker is still in heating mode, the infrared temperature measurement module detects the pot temperature, and the pot water level detection device simultaneously detects the pot and the water level inside the pot.

[0019] Preferably, when the pot temperature is lower than the set value and the water volume in the pot is greater than the anti-dry-burning threshold, the intelligent main control module controls the heating component to heat. The intelligent main control module comprehensively processes and analyzes the pot information, water volume information, and pot temperature information, and finally performs the operation through the intelligent main control module.

[0020] Compared with existing technologies, the technical effects and advantages of this utility model are as follows: This intelligent electric ceramic stove,

[0021] The infrared temperature measurement module is located above the ceramic cooktop and next to the cookware. The infrared temperature measurement module transmits the detected cookware temperature information to the intelligent main control module, which can realize intelligent control of the water temperature inside the pot; the cookware water level detection device transmits the detected information to the intelligent main control module.

[0022] The cookware detection function can detect in real time whether there is a cookware at the heating position of the ceramic cooker. If there is no cookware or the cookware is removed during heating, the heating will stop, preventing the risk of fire caused by the high temperature radiated outward from the ceramic cooker when there is no cookware.

[0023] The electric ceramic cooker uses a water level detection function to monitor the water level in the cookware. When there is no water in the cookware or the water has boiled dry, the cooker can reliably enter the water shortage protection program to prevent the cookware from dry burning, thus avoiding damage to the cookware or the risk of fire. The electric ceramic cooker is more intelligent and user-friendly, which not only improves product reliability but also enhances the user experience and strengthens the market competitiveness of the electric ceramic cooker. Attached Figure Description

[0024] Figure 1 This is a system block diagram of an intelligent electric ceramic stove according to this utility model.

[0025] Figure 2 This is a schematic diagram of the structure and wiring of Embodiment 1 of this utility model.

[0026] Figure 3 This is a schematic diagram of the structure and wiring of Embodiment 2 of this utility model.

[0027] Figure 4 This is a schematic diagram of the structure and wiring of Embodiment 3 of this utility model.

[0028] Figure 5 This is a flowchart of the intelligent electric ceramic stove control method according to Embodiment 1 of this utility model.

[0029] Figure 6 This is a flowchart of the intelligent electric ceramic stove control method according to Embodiment 2 of this utility model.

[0030] Figure 7 This is a flowchart of the intelligent electric ceramic stove control method of Embodiment 3 of this utility model.

[0031] In the diagram: 10. Intelligent main control module; 11. Cookware water level detection device; 12. Infrared temperature measurement module; 13. Heating component; 14. Fan cooling component; 15. Display key control module; 16. Water filling component; 131. Metal casing of heating component; 132. Heating element; 101. Relay; 102. Relay; 103. Thyristor. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1

[0034] Please see Figure 1-2 This utility model provides a technical solution: an intelligent electric ceramic stove, comprising:

[0035] The cookware water level detection device 11 is used to detect the placement of the cookware at the heating position and the water level inside the cookware, and outputs a capacitance value detection signal.

[0036] Infrared temperature measurement module 12 is used to detect the temperature of the cookware and output a temperature signal;

[0037] Display key control module 15 is used for user operation input and working status display;

[0038] The intelligent main control module 10 is connected to the cookware water level detection device 11, the infrared temperature measurement module 12 and the display key control module 15. It is used to receive capacitance value and temperature signal and control heating, heat dissipation and water replenishment actions.

[0039] Heating component 16 is used to convert electrical energy into heat energy and is controlled by intelligent main control module 10;

[0040] The fan heat dissipation component 14 is used for heat dissipation inside the electric ceramic stove and is controlled by the intelligent main control module 10.

[0041] The water filling component 16 is used to add water to the pot and is controlled by the intelligent main control module 10.

[0042] The infrared temperature measurement module 12 is set on the ceramic cooker plate next to the cookware. The infrared temperature measurement module 12 transmits the detected temperature information of the cookware to the intelligent main control module 10 for intelligent control of the water temperature in the pot.

[0043] The heating assembly 16 includes a metal housing 131, which serves as a capacitive sensor for the cookware water level detection device 11, and a heating element 132. The metal housing 131 is connected to the cookware and water level detection port of the intelligent main control module 10 to detect cookware and water level information.

[0044] Relays 101 and 102, and a capacitor are connected in series at both ends of the heating element 132. When the heating element 132 is connected to the L and N terminals of the mains power, the equivalent capacitance is coupled to the pot water level detection device 11. This coupling capacitance is large and variable. Therefore, when the pot and water level are detected before heating begins or during heating, when no pot is detected, when a pot is lifted, or when the pot and water level are detected after no water is detected, the relays 101 and 102 connected in series at both ends of the heating element 132 are in the off state.

[0045] Based on the cookware information, water volume information, and cookware temperature information, when there is a cookware at the heating position of the electric ceramic stove and the water volume in the cookware is greater than the anti-dry-burning threshold, the intelligent main control module 10 controls the heating component 13 to heat and regulate the cookware temperature.

[0046] When the user lifts the pot to pour water while it is in the heating state of the electric ceramic stove, and puts it back within a preset time, the electric ceramic stove is still in the heating state. The infrared temperature measurement module 12 detects the temperature of the pot, and the pot water level detection device 11 simultaneously detects the pot and the water level inside the pot.

[0047] When the temperature of the cookware is lower than the set value and the amount of water in the cookware is greater than the anti-dry-burning threshold, the intelligent main control module 10 controls the heating component 13 to heat. The intelligent main control module 10 comprehensively processes and analyzes the cookware information, water volume information and cookware temperature information, and finally performs the operation through the intelligent main control module 10.

[0048] Specifically, the work steps include the following:

[0049] When powered on, the user turns on the device by operating the power button on the display and key control module 15 and starts the heating function. At this time, relays 101 and 102 are disconnected, and the intelligent main control module 10 controls the fan cooling component 14 to start dissipating heat.

[0050] The cookware water level detection device 11 starts detecting whether there is a cookware at the heating position of the electric ceramic stove. If there is no cookware, the display and key control module 15 displays a "no cookware" code, reminding the user to put in the cookware. Once the cooking time is determined to be up, the stove is turned off.

[0051] When there is a pot, the pot water level detection device 11 starts to detect the water level in the pot. When the water level in the pot is less than the allowable anti-dry-boil threshold, the display screen on the key control module 15 displays a water shortage code to remind the user to add water to the pot. The device then shuts off when the water level reaches the set time and returns to step S2.

[0052] When there is water in the pot, relays 101 and 102 begin to close.

[0053] The cookware water level detection device 11 starts to detect whether there is a cookware at the heating position of the electric ceramic stove. If there is no cookware, relays 101 and 102 are disconnected, and the process returns to step S2.

[0054] The cookware water level detection device 11 starts detecting the water level in the cookware. If there is no water, relays 101 and 102 are disconnected, and the process returns to step S2.

[0055] When there is a pot and water, heating stops when the infrared temperature measurement module 12 detects that the pot temperature has reached the set temperature; heating continues when the set temperature has not been reached.

[0056] Determine if the heating function is complete; if it is, shut down the machine; then return to step S2 and repeat the process.

[0057] When the device is powered on, the user can operate the water replenishment button on the display and key control module 15 to control the water filling component 16 to add water to the pot through the intelligent main control module 10.

[0058] This invention features an added cookware detection function that can monitor the presence of a cookware at the heating position of the ceramic cooktop in real time. Heating stops when no cookware is present or when the cookware is removed during heating, preventing the risk of fire caused by the high temperatures radiated from the cooktop when no cookware is present. A water level detection function monitors the water level in the cookware. When the cookware is dry or the water has boiled away, the ceramic cooktop reliably enters a water shortage protection program to prevent the cookware from drying out and avoid damage or fire hazards. Simultaneously, the added infrared temperature measurement function monitors the cookware temperature in real time, enabling intelligent control of the water temperature inside the cookware. This makes the ceramic cooktop more intelligent and user-friendly, improving product reliability and enhancing the user experience.

[0059] It should be noted that when the two ends of the heating element 132 are connected to the L and N terminals of the mains power, an equivalent capacitance is coupled to the cookware and water level detection device. This coupling capacitance value is large and varies. Therefore, in this embodiment, when the cookware and water level are detected before heating begins, or when the cookware and water level are further detected after detecting no cookware, a lifting action, or no water during heating, the relays 101 and 102 connected in series with the two ends of the heating element 132 are disconnected. The two ends of the heating element 132 are not connected to the L and N terminals of the mains power in any circuit. During the detection process, the detection result will not be affected by the change in the coupling capacitance value, making the detection more accurate and reliable.

[0060] When the user turns on the power and starts the heating function via the key control module, the pot water level detection device 11 begins to detect the pot and the water level inside the pot:

[0061] When the detected capacitance value is less than the threshold for a pot, the heating element 13 does not heat up, and the display key module 15 displays a no-pot prompt. After a period of time, if no pot is detected, the electric ceramic stove turns off the selected heating function and enters the power-off state.

[0062] When a pot is detected, but the detected capacitance value is less than the anti-dry-burning threshold, the heating element 13 does not heat up, and the display key control module 15 displays a water shortage warning. After a period of time, if no water is detected, the electric ceramic stove turns off the selected heating function and enters the shutdown state.

[0063] When a pot is detected and the detected capacitance value is greater than the anti-dry-burning threshold, it is determined that the water level in the pot meets the requirements. The intelligent main control module 10 then starts to control the heating component 13 to heat the pot, and the fan cooling component 14 starts to run.

[0064] During the heating process of the electric ceramic stove, the pot water level detection device 11 continuously monitors the capacitance value of the pot and water level in real time and saves the detected capacitance value.

[0065] When the detected capacitance value is compared with the previously detected capacitance value, if the capacitance value suddenly decreases and the change is greater than the threshold for lifting the pot, it is determined that the pot has been removed. The heating component 13 stops heating, and the display key module 15 displays a no-pot prompt. After a period of time, if no pot is detected, the electric ceramic stove turns off the selected heating function and enters the power-off state.

[0066] During the heating process, as the water in the pot evaporates, the water volume will gradually decrease, and the detected capacitance value will also decrease. When the capacitance value is less than the anti-dry-burning threshold, the heating component 13 stops heating, and the display key control module 15 displays a water shortage warning. After a period of time, if no water is detected, the electric ceramic stove will turn off the selected heating function and enter the shutdown state.

[0067] During the water heating process, the infrared temperature measurement module 12 transmits the detected pot temperature to the intelligent main control module 10, which then controls the heating component 13 to heat the pot and control the water temperature inside.

[0068] Heating is activated when the detected water temperature is lower than the set temperature.

[0069] Heating stops when the detected water temperature reaches the set temperature;

[0070] The cookware water level detection device 11 includes one or more capacitive sensors. One end of the capacitive sensor is connected to the metal housing 131 of the heating component 11, and the other end of the capacitive sensor is connected in series with a capacitor or a resistor or directly to the processor. The capacitive sensor compares the detected capacitance value with the set capacitance value.

[0071] If the capacitance value detected by the sensor is greater than or equal to the set capacitance value for a pot, it is determined that there is a pot at the heating position of the electric ceramic stove; otherwise, it is determined that there is no pot.

[0072] If the capacitance value detected by the sensor is greater than or equal to the set anti-dry-burning height threshold, it is determined that there is water in the pot.

[0073] If the capacitance value detected by the sensor is less than the set anti-dry-burning height threshold, it is determined that there is no water in the pot.

[0074] Heating can proceed if a pot is present and contains water; otherwise, heating is not permitted.

[0075] The cookware water level detection device 11 includes one or more capacitive sensors. One end of the capacitive sensor is connected to the heating element of the heating component, and the other end of the capacitive sensor is connected to the processor via a capacitor or resistor. The capacitive sensor compares the detected capacitance value with the set capacitance value.

[0076] If the capacitance value detected by the sensor is greater than or equal to the set capacitance value for a pot, it is determined that there is a pot at the heating position of the electric ceramic stove; otherwise, it is determined that there is no pot.

[0077] If the capacitance value detected by the sensor is greater than or equal to the set anti-dry-burning height threshold, it is determined that there is water in the pot.

[0078] If the capacitance value detected by the sensor is less than the set anti-dry-burning height threshold, it is determined that there is no water in the pot.

[0079] Heating can proceed if a pot is present and contains water; otherwise, heating is not permitted.

[0080] The heating element 132 of the heating assembly 13 is connected in series with the output terminal of a relay or electronic switch at both ends;

[0081] When the cookware and water level are first detected, the relay or electronic switch controls the heating element of the heating assembly 13 to disconnect from the mains power.

[0082] When a pot is detected and there is water in the pot, the relay or electronic switch controls the heating element 132 of the heating component to connect to the mains power.

[0083] The intelligent main control module 11 sets the water replenishment function through the display key control module 15 and controls the water filling component 16 to add water to the pot.

[0084] Example 2

[0085] A smart electric ceramic stove, comprising:

[0086] The cookware water level detection device 11 is used to detect the placement of the cookware at the heating position and the water level inside the cookware, and outputs a capacitance value detection signal.

[0087] Infrared temperature measurement module 12 is used to detect the temperature of the cookware and output a temperature signal;

[0088] Display key control module 15 is used for user operation input and working status display;

[0089] The intelligent main control module 10 is connected to the cookware water level detection device 11, the infrared temperature measurement module 12 and the display key control module 15. It is used to receive capacitance value and temperature signal and control heating, heat dissipation and water replenishment actions.

[0090] Heating component 16 is used to convert electrical energy into heat energy and is controlled by intelligent main control module 10;

[0091] The fan heat dissipation component 14 is used for heat dissipation inside the electric ceramic stove and is controlled by the intelligent main control module 10.

[0092] The water filling component 16 is used to add water to the pot and is controlled by the intelligent main control module 10.

[0093] The infrared temperature measurement module 12 is set on the ceramic cooker plate next to the cookware. The infrared temperature measurement module 12 transmits the detected temperature information of the cookware to the intelligent main control module 10 for intelligent control of the water temperature in the pot.

[0094] The heating assembly 16 includes a metal housing 131, which serves as a capacitive sensor for the cookware water level detection device 11, and a heating element 132. The metal housing 131 is connected to the cookware and water level detection port of the intelligent main control module 10 to detect cookware and water level information.

[0095] Relays 101 and 102, and a capacitor are connected in series at both ends of the heating element 132. When the heating element 132 is connected to the L and N terminals of the mains power, the equivalent capacitance is coupled to the pot water level detection device 11. This coupling capacitance is large and variable. Therefore, when the pot and water level are detected before heating begins or during heating, when no pot is detected, when a pot is lifted, or when the pot and water level are detected after no water is detected, the relays 101 and 102 connected in series at both ends of the heating element 132 are in the off state.

[0096] like Figure 3 As shown, the heating element 132 is used as the capacitive sensor of the detection device. A capacitor is connected in series to the pot and water level detection port of the main control module 10 to detect the pot and water level information. At the same time, the detected pot and water level information is processed by the intelligent main control module 10. It can determine whether there is a pot and detect the amount of water in the pot based on the different capacitance values ​​of whether there is a pot and whether there is water.

[0097] Based on the cookware information, water volume information, and cookware temperature information, when there is a cookware at the heating position of the electric ceramic stove and the water volume in the cookware is greater than the anti-dry-burning threshold, the intelligent main control module 10 controls the heating component 13 to heat and regulate the cookware temperature.

[0098] When the user lifts the pot to pour water while it is in the heating state of the electric ceramic stove, and puts it back within a preset time, the electric ceramic stove is still in the heating state. The infrared temperature measurement module 12 detects the temperature of the pot, and the pot water level detection device 11 simultaneously detects the pot and the water level inside the pot.

[0099] When the temperature of the cookware is lower than the set value and the amount of water in the cookware is greater than the anti-dry-burning threshold, the intelligent main control module 10 controls the heating component 13 to heat. The intelligent main control module 10 comprehensively processes and analyzes the cookware information, water volume information and cookware temperature information, and finally performs the operation through the intelligent main control module 10.

[0100] See Figure 6 The flowchart shown is a control method for an intelligent electric ceramic stove according to Embodiment 2 of this utility model. The control process is exactly the same as that in Embodiment 1, and will not be repeated here.

[0101] It should be noted that when using the heating element 132 as a capacitive sensor in the detection device, during the heating process, after relays 101 and 102 are closed, the AC signal from the mains power will be coupled to the cookware and water level detection ports of the intelligent main control module 10 through capacitor C111. This AC signal acts as an interference source here, causing the capacitance value of the tested cookware and water level to change periodically. Therefore, when performing cookware and water level detection, the measured capacitance value must be filtered before the cookware and water level can be determined. However, when relays 101 and 102 are open, the cookware and water level detection results will not be affected by the change in the coupling capacitance value, making the detection more accurate and reliable.

[0102] Example 3

[0103] A smart electric ceramic stove, comprising:

[0104] The cookware water level detection device 11 is used to detect the placement of the cookware at the heating position and the water level inside the cookware, and outputs a capacitance value detection signal.

[0105] Infrared temperature measurement module 12 is used to detect the temperature of the cookware and output a temperature signal;

[0106] Display key control module 15 is used for user operation input and working status display;

[0107] The intelligent main control module 10 is connected to the cookware water level detection device 11, the infrared temperature measurement module 12 and the display key control module 15. It is used to receive capacitance value and temperature signal and control heating, heat dissipation and water replenishment actions.

[0108] Heating component 16 is used to convert electrical energy into heat energy and is controlled by intelligent main control module 10;

[0109] The fan heat dissipation component 14 is used for heat dissipation inside the electric ceramic stove and is controlled by the intelligent main control module 10.

[0110] The water filling component 16 is used to add water to the pot and is controlled by the intelligent main control module 10.

[0111] The infrared temperature measurement module 12 is set on the ceramic cooker plate next to the cookware. The infrared temperature measurement module 12 transmits the detected temperature information of the cookware to the intelligent main control module 10 for intelligent control of the water temperature in the pot.

[0112] The heating assembly 16 includes a metal housing 131, which serves as a capacitive sensor for the cookware water level detection device 11, and a heating element 132. The metal housing 131 is connected to the cookware and water level detection port of the intelligent main control module 10 to detect cookware and water level information.

[0113] Relays 101 and 102, and a capacitor are connected in series at both ends of the heating element 132. When the heating element 132 is connected to the L and N terminals of the mains power, the equivalent capacitance is coupled to the pot water level detection device 11. This coupling capacitance is large and variable. Therefore, when the pot and water level are detected before heating begins or during heating, when no pot is detected, when a pot is lifted, or when the pot and water level are detected after no water is detected, the relays 101 and 102 connected in series at both ends of the heating element 132 are in the off state.

[0114] like Figure 4 As shown, there are no relays connected in series at either end of the heating element 132. One end of the heating element 132 is directly connected to the AC-L mains power, and the other end is connected to the AC-N mains power through the thyristor 103 when heating.

[0115] It should be noted that when the two ends of the heating element 132 are connected to the L and N terminals of the mains power, an equivalent capacitance will be coupled to the cookware water level detection device 11. This coupling capacitance value is large and varies. In this embodiment 3, no relay is connected in series at the two ends of the heating element 132. The capacitance value tested in this example needs to be filtered before the cookware and water level are judged.

[0116] Based on the cookware information, water volume information, and cookware temperature information, when there is a cookware at the heating position of the electric ceramic stove and the water volume in the cookware is greater than the anti-dry-burning threshold, the intelligent main control module 10 controls the heating component 13 to heat and regulate the cookware temperature.

[0117] When the user lifts the pot to pour water while it is in the heating state of the electric ceramic stove, and puts it back within a preset time, the electric ceramic stove is still in the heating state. The infrared temperature measurement module 12 detects the temperature of the pot, and the pot water level detection device 11 simultaneously detects the pot and the water level inside the pot.

[0118] When the temperature of the cookware is lower than the set value and the amount of water in the cookware is greater than the anti-dry-burning threshold, the intelligent main control module 10 controls the heating component 13 to heat. The intelligent main control module 10 comprehensively processes and analyzes the cookware information, water volume information and cookware temperature information, and finally performs the operation through the intelligent main control module 10.

[0119] See Figure 7 The flowchart shown is for the intelligent electric ceramic stove control according to Embodiment 3 of this utility model. The specific steps are as follows:

[0120] Upon power-on, the user turns on the device via the power button on the operation display and key control module 15 and starts the heating function. The intelligent main control module 10 controls the fan cooling component 14 to begin heat dissipation.

[0121] The cookware water level detection device 11 starts detecting whether there is a cookware at the heating position of the electric ceramic stove. If there is no cookware, the display screen on the display and key control module 15 displays a "no cookware" code, reminding the user to put in the cookware, turning off the silicon controlled rectifier 103, and stopping heating. If the cookware detection time has been reached, the machine is turned off; otherwise, it continues to detect the cookware.

[0122] When a pot is in use, the pot water level detection device 11 starts detecting the water level inside the pot. If the water level in the pot is lower than the allowable dry-boil prevention threshold, the display screen on the display and key control module 15 displays a water shortage code, reminding the user to add water to the pot, turning off the silicon controlled rectifier 103, and stopping heating. If the water level determination time has been reached, the device is turned off; otherwise, it returns to step S2.

[0123] When there is a pot and water, the heating stops when the infrared temperature measurement module 12 detects that the pot temperature has reached the set temperature; otherwise, heating continues.

[0124] Determine if the heating function is complete. If it is, turn off the machine; otherwise, return to step S2 and repeat the process.

[0125] When the device is powered on, the user can operate the water replenishment button on the display and key control module 15 to control the water filling component 16 to add water to the pot through the intelligent main control module 10.

[0126] Compared with Example 1, Example 3 eliminates relays 101 and 102 and their control circuits, which is more cost-effective than Example 1. It can fully realize the detection of cookware and waterlessness. However, the accuracy of the detected water level capacitance value will be affected to some extent because of the addition of the equivalent capacitance of the mains power. It will be limited in some special applications. For example, when using an electric ceramic stove to cook Chinese medicine, it is required to stop heating when the water volume is reduced by half. This Example 3 is not applicable.

[0127] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An intelligent electric ceramic stove, characterized in that, include: The cookware water level detection device is used to detect the placement of the cookware at the heating position and the water level inside the cookware, and outputs a capacitance value detection signal; Infrared temperature measurement module is used to detect the temperature of the cookware and output a temperature signal; The key control module is used for user input and display of working status. The intelligent main control module is connected to the cookware water level detection device, infrared temperature measurement module and display key control module. It is used to receive capacitance value and temperature signal and control heating, heat dissipation and water replenishment actions. The heating component is used to convert electrical energy into heat energy and is controlled by the intelligent main control module; The fan cooling component is used for heat dissipation inside the electric ceramic cooker and is controlled by the intelligent main control module; The water filling component is used to add water to the pot and is controlled by the intelligent main control module.

2. The intelligent electric ceramic stove according to claim 1, characterized in that: The infrared temperature measurement module is installed on the ceramic cooktop plate next to the cookware. The infrared temperature measurement module transmits the detected temperature information of the cookware to the intelligent main control module for intelligent control of the water temperature inside the cookware.

3. The intelligent electric ceramic stove according to claim 1, characterized in that: The heating assembly includes a metal housing that serves as a capacitive sensor for detecting the water level in the cookware and a heating element. The metal housing is connected to the cookware and water level detection port of the intelligent main control module to detect cookware and water level information.

4. The intelligent electric ceramic stove according to claim 3, characterized in that: A relay, a capacitor, and a relay are connected in series at both ends of the heating element. When the two ends of the heating element are connected to the L and N terminals of the mains power, the equivalent capacitance is coupled to the cookware water level detection device.

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