Mute quick-boiling water boiling method

Abstract

The invention relates to the technical field of electric kettles, and provides a mute quick-boiling water boiling method which is applied to an electric kettle, the electric kettle comprises a kettle body, the electric kettle body is provided with an intelligent water boiling mode, and the method comprises the following steps that in the intelligent water boiling mode, water level detection is triggered, and heating logic is started; when no water exists in the kettle, the water pump is started to pump water, the flow meter detects water flow, the instant heating pipe performs full-power heating, and meanwhile, the water heated by the instant heating pipe starts to be heated to 100 DEG C in a full-power mode when the water in the kettle is detected to exist. Through heating logic control, water flow is primarily heated by the instant heating pipe, then enters the kettle and is continuously heated by the heating disc, and when the instant heating pipe heats the water flow to the temperature close to the set temperature, the water flow is continuously heated for the second time through the heating pipe, so that the violent generation and breakage of bubbles can be effectively inhibited, and the grunt sound or explosion sound is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric water boilers, in particular to a quiet and fast boiling water heating method. BACKGROUND

[0002] With the improvement of people's living standards and the enhancement of the awareness of healthy drinking water, household water heating equipment gradually develops towards intelligence, high efficiency and energy saving. The common water heating devices on the market mainly include two types: traditional electric water heaters and instant water heaters. The traditional electric water heater has simple structure and low cost, but has slow heating speed, high energy consumption, and is prone to generate loud noise during boiling process. Although the instant water heater has the advantage of fast hot water output, it has large power fluctuation at low temperature start, and the control is not fine enough, which affects the user experience.

[0003] The existing water heating method generally has problems such as loud noise during heating process, inaccurate temperature control, and low energy efficiency. Especially in the high-temperature boiling stage, the traditional electric water heater lacks a phased heating strategy, which leads to the generation and rupture of bubbles, producing obvious "gurgling" sound or explosion, affecting the user experience.

[0004] The purpose of the present application is to solve the problems of loud noise, slow boiling, inaccurate temperature control and inability to keep warm of the traditional water heating method. SUMMARY

[0005] The purpose of the present application is to solve the problems of loud noise, slow boiling, inaccurate temperature control and inability to keep warm of the traditional water heating method. The present application adopts the following technical solutions:

[0006] A quiet and fast boiling water heating method applied to an electric water heater, the electric water heater comprising a water kettle, the electric water heater being provided with an intelligent water heating mode, comprising the following steps:

[0007] In the intelligent water heating mode, water level detection is triggered, and heating logic is started.

[0008] When there is no water in the kettle, the bottom water detection detects no water, the water pump is started to pump water, the flow meter detects water flow, the instant tube is heated at full power, and at the same time, the water kettle detects water and starts to heat the water heated by the instant tube at full power to 100 DEG C.

[0009] The quiet and fast boiling water heating method described above comprises the following steps:

[0010] Step S1: the user triggers the start-up process through the power key;

[0011] Step S2: in the standby state, the intelligent water heating, temperature setting and kettle water filling mode are selected through the function keys, and the operation of each function key is accompanied by a buzzer prompt sound.

[0012] The above-described method for boiling water quietly and rapidly includes the following steps in its intelligent boiling mode:

[0013] When there is water in the kettle: the water detector at the bottom of the kettle detects the presence of water and immediately activates the kettle's heating element to heat at full power.

[0014] The intelligent water boiling mode of the quiet and rapid boiling water boiling method described above includes the following steps:

[0015] When there is no water in the kettle: the water sensor at the bottom of the kettle detects no water and starts the water pump to draw water. Once the water is successfully drawn, the heating element heats the water at full power. After the water enters the kettle, the heating element further heats the water in the kettle to 100°C before switching to heat preservation.

[0016] When there is no water in the kettle: The water sensor at the bottom of the kettle detects no water and the water pump fails to start, displaying E4. You can click any key or the power button to exit E4 and enter standby mode, or click the power button to return to the off state.

[0017] The silent and rapid boiling water boiling method described above includes, in its intelligent water boiling mode heating logic, any one of the following procedures:

[0018] Program 1: The default setting is to heat to 100℃ and cycle 3 times. This means that the heating element at full power (2100W) and the kettle heating element at 600W will heat to 100℃ simultaneously, then stop heating and beep 3 times. When the water temperature is below 90℃, the kettle heating element at 600W will heat to 100℃. After cycling 3 times, the program will enter standby mode.

[0019] Program 2: Default heating time is 30 minutes. It heats at full power (600W) to 100℃, then beeps three times before switching to 300W for continuous heating until finished. If the water temperature drops below 98℃ during 300W continuous heating, it will switch back to full power to 100℃ and then switch to 300W again. The hidden program can be adjusted from 10 to 60 minutes.

[0020] Program 3: Default heating time is 30 minutes. It heats at full power (600W) to 100℃, then beeps three times before switching to 300W for intermittent heating until finished. If the water temperature is detected to be below 98℃ during continuous 300W heating, it will switch back to full power heating to 100℃ and then switch to 300W for continuous heating again. The hidden program can be adjusted from 10 to 60 minutes.

[0021] The water boiling method described above, which involves quiet and rapid boiling, includes the following steps in the temperature setting key:

[0022] When the device is powered on, a single touch of the temperature setting button will activate the setting. The display will show the current set temperature, which is 25℃ by default. A single touch of the temperature setting button will increase the temperature setting by one step. A long press of the temperature setting button will continuously increase the set temperature. If there is no operation for 2 seconds, the set temperature will be automatically confirmed.

[0023] When there is water in the kettle, the heating element adjusts the intermittent power of heating according to the set temperature to heat the water to the set temperature as quickly as possible. When there is no water in the kettle, the water pump starts to pump water (default 60 seconds). After the flow meter detects the water flow, the heating element starts working. The heating element and the kettle heating element heat the water in the kettle to the set temperature. After heating to the preset temperature, the buzzer sounds 3 times and enters the heat preservation state.

[0024] If the water pump fails to pump water and displays E4, you can press any key or the power button to exit E4 and enter standby mode, or press the power button to return to the off state.

[0025] The above-described method for boiling water quietly and rapidly includes the following steps in the kettle's water-adding button:

[0026] In standby / working mode, double-click the kettle water filling function button to start the water pump. The flow meter detects the water flow and activates the instant heating element to heat at full power. When the water in the kettle reaches the upper water limit, the water pump will beep 3 times to stop filling.

[0027] If no water is pumped after pumping is completed and an E4 error is reported, you can press any key or the power button to exit E4 and enter standby mode, or press the power button to return to the off state.

[0028] Implementing the embodiments of the present invention has the following beneficial effects:

[0029] 1. This invention provides a quiet and rapid boiling method for electric kettles. By setting an intelligent boiling mode and heating logic control, water is initially heated by the instant heating element before entering the kettle and being further heated by the heating plate, achieving simultaneous and efficient heating and significantly improving heating efficiency. Simultaneously, when the instant heating element heats the water to near the set temperature, it undergoes a second, continuous heating process through the heating element, effectively suppressing the violent formation and bursting of bubbles, thus avoiding gurgling or popping sounds and improving the user experience. This second, continuous heating through the heating element avoids the problem of inaccurate temperature control found in instant water heaters.

[0030] In summary, this invention solves the problems of loud noise, slow boiling, and inaccurate temperature control and inability to maintain temperature in traditional water heating methods. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a flowchart illustrating the steps of a silent and rapid boiling method for water according to the present invention.

[0033] Figure 2 This is a schematic diagram of the electric kettle of the present invention, its internal structure, and its working principle. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figure 1 As shown, this invention proposes a quiet and rapid boiling method for an electric kettle, which includes a kettle and a rear kettle. The kettle is used for boiling water, and the rear kettle is used for steaming or brewing tea or sterilizing. The electric kettle integrates multiple load devices, including a DC 12V water pump, two heating elements of different power (2100W and 600W), and an NTC sensor for temperature detection. It also includes a water detection probe and a temperature control connector. The control panel of the electric kettle includes a power button, a display screen, and function keys. The function keys include intelligent boiling, temperature setting, sterilization / brewing, adding water to the kettle, and steaming / brewing tea.

[0036] An electric kettle includes the following process modules:

[0037] Startup and shutdown procedures.

[0038] Power On: When AC / 220V power is connected, the buzzer will sound one beep, and all LEDs and the display screen will light up for one second. This indicates that the system has completed the initial power test and is ready to proceed to the next step. Default Shutdown: After a brief display, all lights except the power on / off indicator will automatically turn off, and the system will enter shutdown mode. At this time, the device is in the lowest power consumption mode, awaiting further user operation. The user needs to double-click the power button to activate the device. Each touch of the power button will be accompanied by a buzzer (twice in total) to confirm the button action. After activation, the device enters standby mode. At this time, the display screen will show the current water temperature, the runway light will also light up, and only the power indicator light among the function keys will light up, indicating that the device is ready to receive commands. In standby mode, the user can perform specific tasks by clicking or long-pressing different function keys. If no operation is performed within 3 minutes, the device will automatically return to shutdown mode. In standby mode, the user can turn off the device by clicking the power button again.

[0039] Intelligent water boiling process.

[0040] In standby mode, click the smart water boiling button (a beep will sound when touched). At this time, the smart water boiling indicator light will stay on, the water boiling symbol on the display screen will also light up, and all the runway lights will be on.

[0041] The operating path is determined by the water level in the kettle: If there is water in the kettle: When the bottom water sensor detects sufficient water, the kettle will automatically start full-power (600W) heating. During heating, the indicator lights will dynamically change in a stacked display to visually show the heating progress. If there is no water in the kettle: If the bottom water sensor fails to detect water, the system will start the water pump to pump water according to the preset pumping time (default 60 seconds). During pumping, the water-filling icon on the display will light up. Users can manually stop or continue the water-filling process. Once the bottom water sensor detects water entering the kettle, the kettle immediately starts heating at full power (600W), and the instant heating element will operate at full power (2100W). During heating, the indicator lights will also reflect the heating progress in a stacked display. It should be noted that the instant heating element will only start when the water pump is working and the flow meter detects water flow.

[0042] Users can cancel the ongoing smart boiling function by clicking the smart boiling button again, which will return the device to standby mode; or they can directly click the power button to completely turn off the device and return it to the off state. If not enough water is pumped after the pumping is finished, the system will report an error E4. At this time, users can exit the E4 error state and return to standby mode by clicking any button, or completely turn off the device by clicking the power button.

[0043] In the intelligent water boiling mode, the system offers three different preset programs for users to choose from, with program 1 being the default.

[0044] Program 1: The instant heating element 2100W and the kettle heating element 600W work together to heat to 100℃, then stop heating and beep 3 times. When the water temperature drops below 90℃, only the kettle heating element 600W is used to reheat to 100℃. After the cycle is repeated 3 times, it enters standby mode.

[0045] 2 Programs: The default heating time is 30 minutes. The instant heating element is 2100W and the kettle heating element is 600W. After heating to 100℃, there will be 3 beeps and the power will be reduced to 300W for continuous heating until the end. If the water temperature is detected to be lower than 98℃ during the 300W continuous heating process, the full power heating will be activated to 100℃ and then the power will be reduced to 300W for continuous heating again. The hidden program can be adjusted from 10 to 60 minutes.

[0046] 3 Programs: The default heating time is 30 minutes. The instant heating element is 2100W and the kettle heating element is 600W. After heating to 100℃, there will be 3 beeps. The power will then switch to 200W for intermittent heating until the end. If the water temperature is detected to be below 98℃ during the 300W continuous heating process, the power will be switched to full power to 100℃ and then switch back to 300W for continuous heating. The hidden program can be adjusted from 10 to 60 minutes.

[0047] It is worth noting that all three programs use the presence or absence of water in the kettle as the criterion for distinguishing between 2100+600W and just 600W heating.

[0048] Temperature setting process.

[0049] In standby mode, clicking the temperature setting button will illuminate the constant temperature indicator light and the track light, indicating that the system is ready to set the temperature. The default preset temperature is 25℃, and the display will show the current set temperature. A single touch of the constant temperature setting button will jump the temperature directly from the default 25℃ to 45℃. Subsequent single touches will increase the temperature by 5℃ each time (i.e., 45℃→50℃→55℃...) until the maximum set temperature of 100℃ is reached. To continuously increase the temperature, press and hold the constant temperature setting button; the temperature will increase by 5℃ per second until the button is released or the maximum value of 100℃ is reached. If no further operation is performed within 2 seconds, the system will automatically save the current settings and exit edit mode.

[0050] The system operates based on the water level in the kettle: If there is water in the kettle: When the bottom water sensor detects sufficient water, the system automatically adjusts the heating power according to the set temperature to reach the target temperature as quickly as possible and maintain optimal heat retention. During heating, the indicator lights show the heating progress. If there is no water in the kettle: If the bottom water sensor fails to detect water, the system starts the water pump to draw water after a preset time (default 60 seconds). During the water pumping process, the water-adding icon on the display will light up, and the user can manually stop or continue the water-adding process. Once the bottom water sensor detects water entering the kettle, the system immediately begins adjusting the intermittent heating power of the instant heating element and the kettle's heating element according to the set temperature to achieve the fastest heating speed and best heat retention. During heating, the indicator lights also show the heating progress in a stacked display manner. After reaching the set temperature, the system will emit three beeps and enter heat retention mode, with the current temperature displayed on the screen in real time. In heat preservation mode, if the water temperature drops below the set temperature by 1°C, the system will automatically start low-power heating to restore the set temperature. The heat preservation time is 12 hours, during which the constant temperature indicator light will remain on. If not enough water is extracted after the pumping is completed, the system will report an error E4. At this time, the user can exit the E4 error state and return to standby mode by clicking any button, or completely turn off the device by clicking the power button.

[0051] Water filling process for a kettle.

[0052] In standby or working mode, double-click the "Add Water to Kettle" button to start the water filling program. After starting, the system will begin a 60-second automatic water filling countdown, which will be displayed on the screen. During the filling process, the system will continuously monitor the water level. Once the upper water sensor detects that the water level has reached the upper limit, indicating that the kettle is full, the system will emit three beeps and stop filling. If sufficient water is not added within the set filling time, the system will report an error E4, indicating that the water filling operation has not been successfully completed. Users can stop or continue filling at any time during the process. If water pumping ends but not enough water is pumped, resulting in an E4 error, users can exit the E4 error state by clicking the "Add Water to Kettle" button or the power button. Clicking the "Add Water to Kettle" button will return the device to standby mode, while clicking the power button will completely shut down the device, returning it to the off state.

[0053] Sterilization and boiling process.

[0054] In standby mode, press the "Sterilize and Boil Cup" button. The sterilization and boiling cup indicator light will flash for two seconds. If no further operation is performed within these two seconds, the indicator light will turn solid, indicating that the sterilization and boiling cup function is ready to start. During this time, the user can adjust the working time by pressing the "Sterilize and Boil Cup" button again. The default time is 8 minutes, and the adjustable range is 5 to 30 minutes, increasing in 1-minute increments.

[0055] Heating process: The system starts at full power (600W) to heat to 98℃, then switches to low power (300W) until it reaches 100℃. Once the target temperature is reached, the system will use intermittent heating (e.g., 10 seconds of heating, 10 seconds of stopping) and maintain low power (200W) heating until the countdown ends. During the entire heating process, if the water temperature is detected to be below 98℃, full power heating will restart to restore it to 98℃.

[0056] Steaming and boiling tea process.

[0057] In standby mode, click the "Steam Tea / Break Tea" button. The "Steam Tea / Break Tea" indicator light will flash for two seconds. If no further operation is performed within these two seconds, the indicator light will turn solid, indicating that the "Steam Tea / Break Tea" function is ready to start. During this time, the user can adjust the working time by clicking the "Steam Tea / Break Tea" button again. The default time is 10 minutes, and the adjustable range is 5 to 30 minutes, increasing in 1-minute increments.

[0058] Heating process: The system starts at full power (600W) to heat to 98℃, then switches to low power (300W) until it reaches 100℃. Once the target temperature is reached, the system will use intermittent heating (e.g., 10 seconds of heating, 10 seconds of stopping) and maintain low power (200W) heating until the countdown ends. During the entire heating process, if the water temperature is detected to be below 98℃, full power heating will restart to restore it to 98℃.

[0059] Hidden program flow.

[0060] Within one minute of powering on the device, and while it is powered off, press and hold the power button for 5 seconds to enter the hidden program setting mode. The default setting is program 01, and a long beep will confirm entry into this mode. Switching hidden programs: Click the "Add Water to Kettle" button to cycle through six hidden programs (01 to 06). When switching to program 01, a long beep will sound; switching to other programs will produce short beeps.

[0061] Program 01: Water detection sensitivity on the kettle. Increase the value by clicking or pressing and holding the "Disinfecting and Boiling Cup" button. Each click increases the value by 1, and a long press increases it continuously. The adjustment range is 1-255, and the default value is 195.

[0062] Program 02: Water detection sensitivity under the kettle. This can also be adjusted using the "Disinfecting and Boiling Cup" button. The adjustment range is 1-255, with a default value of 165.

[0063] Program 03: Heating Time Adjustment. The adjustable range is 5-60 minutes, with a default setting of 30 minutes. This directly affects the actual running time of functions such as intelligent water boiling.

[0064] Program 04: Intelligent Water Heating Mode. Use the "Sterilize Cup" button to switch between heating modes 1, 2, and 3; mode 1 is selected by default. Each heating mode corresponds to a different power output strategy and temperature control logic.

[0065] Program 05: Kettle Boiling Point Adjustment. The adjustable range is 80℃ to 100℃, with a default value of 93℃. This setting is crucial for boiling point calibration at different altitudes.

[0066] Program 06: Water filling time adjustment. The adjustable range is 40 to 120 seconds, with the default setting being 60 seconds.

[0067] Example 1:

[0068] Objective: To heat water quickly and efficiently by using both instant heating elements and kettle heating elements simultaneously, while ensuring precise temperature control and reducing noise.

[0069] Workflow

[0070] Activate the device and select a mode:

[0071] The user double-clicks the power button to activate standby mode and selects the "Smart Boiling Water" function. At this time, the smart boiling water indicator light stays on, the boiling water symbol on the display screen also lights up, and all the running lights illuminate.

[0072] Initial testing and hydration:

[0073] The system first uses a water level sensor to detect the water level. If the kettle is found to be empty, a 60-second (default) automatic water filling program will be initiated. If the user wishes to intervene manually, they can stop or resume water filling at any time during the process.

[0074] Synchronous heating start-up:

[0075] When the water sensor inside the kettle detects water, the system simultaneously activates the 220V / 2100W instant heating element and the 220V / 600W kettle heating element. The water flows through the instant heating element and is preheated to near boiling point (80℃), then enters the kettle. In the kettle, it is further heated to the target temperature (100℃), then heating stops and a buzzer sounds three times. When the water temperature drops below 90℃, only the 600W kettle heating element is used to reheat it to 100℃. This cycle repeats three times before entering standby mode.

[0076] After entering the device, the water first undergoes a rapid initial heating process via a high-power instant heating element (220V / 2100W), and then enters the kettle where it is further heated by a secondary heating element (220V / 600W). This synergistic operation significantly improves overall heating efficiency. Simultaneously, when the instant heating element heats the water to near the set temperature (75℃), the secondary heating by the secondary heating element effectively suppresses the violent formation and bursting of bubbles, thus avoiding gurgling or popping sounds and improving the user experience. Specifically, the instant heating element has a high power of 2100W, enabling it to quickly raise the water temperature to near boiling point. This rapid heating avoids prolonged exposure to the temperature range (between 70℃ and 90℃) that generates a large number of bubbles, thereby reducing noise caused by bubble formation and bursting. Subsequently, the heating element (220V / 600W) inside the kettle continues heating at a lower power, ensuring a stable temperature rise and preventing additional noise caused by drastic temperature changes. This coordinated high and low power heating further enhances the quietness of the electric kettle during the boiling process. Using a combination of an instant heating element and a kettle heating element can achieve a more uniform heating effect. The instant heating element initially heats the water flow, ensuring a relatively even temperature of the water entering the kettle; while the kettle heating element further ensures that the entire water reaches the required temperature. This reduces the presence of localized high-temperature areas, thereby minimizing the violent formation and bursting of large bubbles caused by localized overheating. Finally, the water, preheated by the instant heating element, enters the kettle already at a higher temperature, meaning less additional heat is needed during subsequent heating, reducing overall heating time and the potential for violent boiling.

[0077] Example 2:

[0078] Objective: To achieve rapid heating while ensuring quiet operation, suitable for homes or offices requiring a quiet environment.

[0079] Workflow

[0080] Activate the device and select a mode:

[0081] The user activates standby mode and selects the "Temperature Setting" function. The default temperature is 25℃. A single touch increases the set temperature until the desired temperature (e.g., 85℃) is reached. A long press continuously increases the temperature value.

[0082] Initial testing and hydration:

[0083] The system first uses a water level sensor to check if the water level is sufficient. If the water level is insufficient, an automatic water filling program will be initiated for 60 seconds (default). Users can manually intervene during this period.

[0084] Synchronous heating start-up:

[0085] When the water level meets the requirements, the system simultaneously activates the 220V / 2100W instant heating element and the 220V / 600W kettle heating element. The intermittent heating power of the instant heating element and the kettle heating element is adjusted according to the set temperature to achieve the fastest heating speed and best heat retention. Water flows through the instant heating element and is preheated to near the set temperature (e.g., 80℃), then enters the kettle, where it is further heated to the target temperature (e.g., 85℃).

[0086] Gradual heating and noise suppression:

[0087] Intermittent heating is used to prevent noise caused by excessive bubble formation.

[0088] Completion and Insulation:

[0089] Once the target temperature is reached, the system will emit three beeps and enter heat preservation mode. During heat preservation mode, if the water temperature drops below the set temperature by 1°C, the system will automatically activate low-power (200W) heating to restore the set temperature.

[0090] In summary, this invention solves the problems of excessive noise, slow boiling, and inaccurate temperature control in instant water heaters.

[0091] It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0092] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A quiet and rapid boiling method for water, applied to an electric kettle, the electric kettle comprising a kettle, the electric kettle being equipped with an intelligent boiling mode, characterized in that, Includes the following steps: In intelligent water heating mode, water level detection is triggered, and the heating logic is started; When there is no water in the kettle: the water sensor at the bottom of the kettle detects no water, starts the water pump to pump water, the flow meter detects the water flow, and the heat pipe heats at full power. At the same time, the water sensor at the bottom of the kettle detects water and starts to heat the water that has been heated by the heat pipe to 100°C at full power.

2. The method for boiling water silently and rapidly according to claim 1, characterized in that, Includes the following steps: Step S1: The user triggers the power-on process using the power button; Step S2: In standby mode, use the function keys to select intelligent boiling, temperature setting, and kettle water filling mode. Each function key operation is accompanied by a buzzer prompt.

3. The method for boiling water silently and rapidly according to claim 1, characterized in that, The intelligent water boiling mode includes the following steps: When there is water in the kettle: the water detector at the bottom of the kettle detects the presence of water and immediately activates the kettle's heating element to heat at full power.

4. The method for boiling water silently and rapidly according to claim 3, characterized in that, The intelligent water boiling mode includes the following steps: When there is no water in the kettle: the water sensor at the bottom of the kettle detects no water and starts the water pump to draw water. Once the water is successfully drawn, the heating element heats the water at full power. After the water enters the kettle, the heating element further heats the water in the kettle to 100°C before switching to heat preservation. When there is no water in the kettle: The water sensor at the bottom of the kettle detects no water and the water pump fails to start, displaying E4. You can click any key or the power button to exit E4 and enter standby mode, or click the power button to return to the off state.

5. The method for boiling water silently and rapidly according to claim 1, characterized in that, The heating logic of the intelligent water boiling mode includes any one of the following programs: Program 1: The default setting is to heat to 100℃ and cycle 3 times. This means that the heating element at full power (2100W) and the kettle heating element at 600W will heat to 100℃ simultaneously, then stop heating and beep 3 times. When the water temperature is below 90℃, the kettle heating element at 600W will heat to 100℃. After cycling 3 times, the program will enter standby mode. Program 2: Default heating time is 30 minutes. After heating to 100℃ at full power (600W), the system will beep 3 times and then switch to 300W for continuous heating until the end. If the water temperature is detected to be below 98℃ during the 200W continuous heating process, the system will start full power heating to 100℃ and then switch back to 300W for continuous heating. The hidden program can be set to run for 10-60 minutes. Program 3: Default heating time is 30 minutes. After heating to 100℃ at full power (600W), the system beeps 3 times and then intermittently heats at 300W until the end. If the water temperature is detected to be below 98℃ during the continuous 300W heating process, the system will start full power heating to 100℃ and then switch back to continuous 300W heating. The hidden program can be set to run for 10-60 minutes.

6. The method for boiling water silently and rapidly according to claim 2, characterized in that, The temperature setting key includes the following steps: When the device is powered on, a single touch of the temperature setting button will activate the setting. The display will show the current set temperature, which is 25℃ by default. A single touch of the temperature setting button will increase the temperature setting by one step. A long press of the temperature setting button will continuously increase the set temperature. If there is no operation for 2 seconds, the set temperature will be automatically confirmed. When there is water in the kettle, the heating element adjusts the intermittent power of heating according to the set temperature to heat the water to the set temperature as quickly as possible. When there is no water in the kettle, the water pump starts to pump water (default 60 seconds). After the flow meter detects the water flow, the heating element starts working. The heating element and the kettle heating element heat the water in the kettle to the set temperature. After heating to the preset temperature, the buzzer sounds 3 times and enters the heat preservation state. If the water pump fails to pump water and displays E4, you can press any key or the power button to exit E4 and enter standby mode, or press the power button to return to the off state.

7. A method for boiling water silently and rapidly according to claim 2, characterized in that, The water filling button for the kettle includes the following steps: In standby / working mode, double-click the kettle water filling function button to start the water pump. The flow meter detects the water flow and activates the instant heating element to heat at full power. When the water in the kettle reaches the upper water limit, the water pump will beep 3 times to stop filling. If no water is pumped after pumping is completed and an E4 error is reported, you can press any key or the power button to exit E4 and enter standby mode, or press the power button to return to the off state.

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