A double-protected fast heating electric kettle

By combining the heating plate and heating element with a double-layer protection device, the problem of slow heating speed and insufficient safety protection of electric kettles is solved, achieving rapid heating and multiple safety protections, thus improving the user experience.

CN224291685UActive Publication Date: 2026-05-29SHENZHEN QINGFENG INTELLIGENT TECH IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN QINGFENG INTELLIGENT TECH IND CO LTD
Filing Date
2025-05-13
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing electric kettles heat up slowly and lack adequate safety protection, failing to meet users' needs for rapid heating and multiple safety safeguards.

Method used

It adopts a combination design of heating plate and heating tube, combined with heat-conducting medium layer and high-temperature resistant wire to achieve rapid heating; the dual protection device includes mechanical protection and electronic protection, and achieves real-time monitoring and protection through temperature sensor, dry burning protector and overheat protector; the display module provides real-time information and control functions.

Benefits of technology

It features rapid heating and multiple safety protections, ensuring the safety and reliability of the electric kettle during use and improving the user experience.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224291685U_ABST
Patent Text Reader

Abstract

The utility model belongs to the technical field of electric kettle, specifically is a kind of quick heating electric kettle with double-layer protection, it includes kettle body, heating device, double-layer protection device and control circuit.The kettle body is composed of kettle body and kettle cover, kettle cover is connected in kettle body top by hinge, kettle body bottom is equipped with heating device, and heating device includes heating tray and heating pipe, heating tray is embedded in kettle body bottom, heating pipe is spirally wound below heating tray, and heat-conducting silicone grease is equipped between heating pipe and heating tray.Control circuit includes microprocessor, power module and display module, and microprocessor is connected with temperature sensor, dry burning protector, overheating protector, heating tray and heating pipe respectively.Double-layer protection device includes mechanical protection device and electronic protection device, and mechanical protection device includes kettle bottom limiter and kettle cover safety lock, and electronic protection device includes temperature sensor, dry burning protector and overheating protector.
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Description

Technical Field

[0001] This utility model belongs to the field of electric kettle technology, specifically a fast-heating electric kettle with double-layer protection. Background Technology

[0002] With the continuous development of the electric kettle industry, existing electric kettle products have become widely used. However, these products still have some problems in actual use. For example, existing electric kettles often suffer from slow heating speed and insufficient safety protection measures, leading to inefficiency and safety hazards for users. To address these issues, some attempts have been made, such as improving the design of the heating element and adding safety protection functions. Although these methods have improved aspects to some extent, they still have limitations.

[0003] Specifically, a search revealed an electric kettle with publication number CN107536467B, published on September 20, 2022. This design uses a lid button and locking mechanism for one-handed opening and closing, which improves ease of use. However, due to the relatively traditional design of its heating element, the heating speed is slow and cannot meet users' needs for rapid heating. Furthermore, this design relies solely on mechanical locking for safety protection, lacking electronic safety measures, which still poses certain safety hazards during use.

[0004] A search revealed an electric kettle with publication number CN111262109B, published on March 18, 2022. This product employs a conductive and insulating travel design to control the connection between the kettle body and the power base. While this avoids unintentional dry burning and reduces production costs, its heating speed remains relatively slow, failing to meet users' demands for rapid heating. Furthermore, this design lacks a multi-layered safety protection mechanism, relying solely on mechanical structures to prevent dry burning, which still poses safety hazards in complex usage environments.

[0005] The aforementioned problems indicate that current electric kettles on the market are unable to effectively meet users' high demands for rapid heating and multiple safety protections. Therefore, this invention provides a rapid-heating electric kettle with double-layer protection to overcome these shortcomings and offer a more intelligent, efficient, and adaptable solution for changing environments. Utility Model Content

[0006] A fast-heating electric kettle with double-layer protection includes a kettle body, a heating device, a double-layer protection device, and a control circuit. The kettle body consists of a kettle body and a lid. The lid is hinged to the top of the kettle body. The heating device is located at the bottom of the kettle body and includes a heating plate and a heating tube. The heating plate is embedded in the bottom of the kettle body, and the heating tube is spirally wound around the heating plate. A heat-conducting medium layer, which is thermally conductive silicone grease, is provided between the heating tube and the heating plate. The heating plate and heating tube are connected to the control circuit via wires. The control circuit is mounted on a circuit board at the bottom of the kettle body. The circuit board includes a temperature sensor, a dry-boil protector, and an overheat protector. The temperature sensor and dry-boil protector are in contact with the heating plate, and the overheat protector is in contact with the heating tube. The double-layer protection device includes a mechanical protection device and an electronic protection device. The mechanical protection device includes a bottom limiter and a lid safety lock. The bottom limiter is located at the bottom of the kettle body and includes a limit block and a limit spring. The limit block is connected to the kettle body via the limit spring. The bottom of the kettle is connected, with the limiting block contacting the bottom of the kettle. The kettle lid safety lock is located at the connection between the kettle lid and the kettle body. The kettle lid safety lock includes a latch and a locking tongue. The latch is fixed to the kettle lid, and the locking tongue is fixed to the kettle body. The latch and the locking tongue are connected by magnetic force. The electronic protection device includes a temperature sensor, a dry-boil protector, an overheat protector, and a control circuit. The temperature sensor and the dry-boil protector are respectively in contact with the heating plate, and the overheat protector is in contact with the heating tube. The control circuit includes a microprocessor, a power module, and a display module. The microprocessor is connected to the temperature sensor, the dry-boil protector, the overheat protector, the heating plate, and the heating tube. The power module is connected to the microprocessor, and the display module is connected to the microprocessor. The display module is located on the outer wall of the kettle body and includes a display screen and operation buttons. The display screen is used to display water temperature, heating status, and fault information, and the operation buttons are used to control the heating and display functions.

[0007] A further preferred embodiment: The heating plate and heating tube are connected to the control circuit via wires, the wires being high-temperature resistant wires. The thermally conductive medium layer is thermally conductive silicone grease, which fills the gap between the heating plate and the heating tube. A heat insulation layer, made of ceramic fiber, is provided between the heating plate and the heating tube. The heating plate and heating tube are connected to the control circuit via wires, the wires passing through the heat insulation layer. An insulation layer, made of high-temperature insulating tape, is provided between the wires and the heat insulation layer, covering the wires. A waterproof connector is provided at the connection point between the wires and the control circuit, located at the bottom of the kettle body. A sealing ring, made of silicone rubber, is provided at the connection point between the waterproof connector and the wires. The heating plate and heating tube are connected to the control circuit via wires. The wires pass through a waterproof connector, and a waterproof adhesive is provided at the connection point between the wires and the waterproof connector. The waterproof adhesive is epoxy resin waterproof adhesive and covers the connection point between the wires and the waterproof connector. A waterproof connector is located at the bottom of the kettle body, and a sealing ring, made of silicone rubber, is provided at the connection point between the waterproof connector and the wires. The heating plate and heating tube are connected to the control circuit via wires. The wires pass through a waterproof connector, and a waterproof adhesive is provided at the connection point between the wires and the waterproof connector. The waterproof adhesive is epoxy resin waterproof adhesive and covers the connection point between the wires and the waterproof connector.

[0008] A further preferred embodiment: the temperature sensor and the dry-burn protector are respectively in contact with the heating plate, the overheat protector is in contact with the heating element, the temperature sensor and the dry-burn protector are respectively connected to the microprocessor via wires, the overheat protector is also connected to the microprocessor via wires, the temperature sensor and the dry-burn protector are respectively located on the heating plate, the overheat protector is located on the heating element, the temperature sensor and the dry-burn protector are respectively connected to the microprocessor via wires, the overheat protector is also connected to the microprocessor via wires, the temperature sensor and the dry-burn protector are respectively located on the heating plate, the overheat protector is located on the heating element. The temperature sensor and the dry-burn protector are respectively connected to the microprocessor via wires. The overheat protector is also connected to the microprocessor via wires. The temperature sensor and the dry-burn protector are respectively located on the heating plate. The overheat protector is located on the heating tube. The temperature sensor and the dry-burn protector are respectively connected to the microprocessor via wires. The overheat protector is also connected to the microprocessor via wires. The temperature sensor and the dry-burn protector are respectively located on the heating plate. The overheat protector is located on the heating tube. The temperature sensor and the dry-burn protector are respectively connected to the microprocessor via wires. The overheat protector is also connected to the microprocessor via wires.

[0009] A further preferred embodiment: The bottom limiter is located at the bottom of the kettle body. The bottom limiter includes a limit block and a limit spring. The limit block is connected to the bottom of the kettle body via the limit spring. The limit block contacts the bottom of the kettle. The limit block is a metal block and is located at the bottom of the kettle body. The limit spring is a helical spring and is located between the limit block and the bottom of the kettle body. The limit block contacts the bottom of the kettle. The limit block is a metal block and is located at the bottom of the kettle body. The limit spring is a helical spring and is located between the limit block and the bottom of the kettle body. The limiting block contacts the bottom of the kettle. The limiting block is a metal block and is located at the bottom of the kettle body. The limiting spring is a helical spring and is located between the limiting block and the bottom of the kettle body.

[0010] A further preferred embodiment: The safety lock for the kettle lid is located at the connection between the kettle lid and the kettle body. The safety lock for the kettle lid includes a latch and a bolt. The latch is fixed to the kettle lid, and the bolt is fixed to the kettle body. The latch and the bolt are connected by magnetic force. The latch is a magnetic metal sheet, and the bolt is a magnetic metal sheet. The latch and the bolt are connected by magnetic force.

[0011] A further preferred embodiment: The control circuit includes a microprocessor, a power supply module, and a display module. The microprocessor is connected to a temperature sensor, a dry-boil protector, an overheat protector, a heating plate, and a heating element. The power supply module is connected to the microprocessor, and the display module is also connected to the microprocessor. The display module is located on the outer wall of the kettle body and includes a display screen and operation buttons. The display screen displays water temperature, heating status, and fault information. The operation buttons control the heating and display functions. The microprocessor is a microcontroller, the power supply module is a switching power supply, the display module is an LCD screen, and the operation buttons are touch buttons. The kettle body includes a display screen and operation buttons. The microprocessor is connected to a temperature sensor, a dry-boil protector, an overheat protector, a heating plate, and a heating element. The power module is connected to the microprocessor, and the display module is also connected to the microprocessor. The display module is located on the outer wall of the kettle body. The display module includes a display screen and operation buttons. The display screen shows water temperature, heating status, and fault information. The operation buttons control the heating and display functions. The microprocessor is a microcontroller, the power module is a switching power supply, and the display module is an LCD screen. The operation buttons are touch buttons.

[0012] The structure and working principle of this utility model are as follows: This utility model achieves rapid heating through a combination design of a heating plate and a heating tube. The heating plate is embedded in the bottom of the kettle body, and the heating tube is spirally wound below the heating plate. A heat-conducting medium layer, which is thermally conductive silicone grease, is provided between the heating tube and the heating plate. The thermally conductive silicone grease fills the gap between the heating plate and the heating tube, improving heat conduction efficiency and making heating more uniform and rapid. The heating plate and the heating tube are connected to the control circuit via wires. The wires are high-temperature resistant wires and pass through the heat insulation layer and waterproof connectors to ensure the safety and stability of the circuit. The control circuit includes a microprocessor, a power module, and a display module. The microprocessor is connected to the temperature sensor, the dry-burn protector, the overheat protector, the heating plate, and the heating tube. The temperature sensor and the dry-burn protector are in contact with the heating plate, and the overheat protector is in contact with the heating tube. Through these sensors and protectors, real-time monitoring and protection of water temperature and heating status are achieved. A bottom limiter is located at the bottom of the kettle body. The limiter block is connected to the bottom of the kettle body via a limit spring, and the limiter block contacts the bottom of the kettle body to prevent the kettle body from shifting due to vibration during heating. A lid safety lock is located at the connection between the lid and the kettle body. The lock buckle is fixed to the lid, and the locking tongue is fixed to the kettle body. The lock buckle and locking tongue are magnetically connected to ensure the lid closes safely during heating. The display module is located on the outer wall of the kettle body and includes a display screen and operation buttons. The display screen shows the water temperature, heating status, and fault information, while the operation buttons control the heating and display functions, allowing users to easily operate and monitor the electric kettle's working status.

[0013] The beneficial effects of this utility model are as follows: 1. The combined design of the heating plate and heating tube achieves rapid heating. The heating plate is embedded in the bottom of the kettle body, and the heating tube is spirally wound below the heating plate. A heat-conducting medium layer, which is thermally conductive silicone grease, is provided between the heating tube and the heating plate. The thermally conductive silicone grease fills the gap between the heating plate and the heating tube, improving heat conduction efficiency and making heating more uniform and rapid. 2. Through a double-layer protection device, including a mechanical protection device and an electronic protection device, the mechanical protection device includes a bottom limiter and a lid safety lock. The electronic protection device includes a temperature sensor, a dry-boil protector, an overheat protector, and a control circuit, enabling real-time monitoring and protection of water temperature and heating status, ensuring the safety and reliability of the electric kettle during use. 3. The display module includes a display screen and operation buttons. The display screen shows water temperature, heating status, and fault information, while the operation buttons control the heating and display functions, allowing users to easily operate and monitor the working status of the electric kettle, improving the user experience. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0015] Figure 2This is a schematic diagram of the heating device of this utility model;

[0016] Figure 3 This is a schematic diagram of the double-layer protection device of this utility model;

[0017] Figure 4 This is a schematic diagram of the bottom limiter of the kettle according to this utility model;

[0018] Figure 5 This is a schematic diagram of the safety lock for the kettle lid of this utility model;

[0019] Figure 6 This is a schematic diagram of the control circuit board of this utility model.

[0020] The attached diagram is labeled as follows: 1. Kettle body; 2. Kettle lid; 3. Hinge; 4. Heating plate; 5. Heating tube; 6. Heat-conducting medium layer; 7. Wire; 8. Heat insulation layer; 9. Insulation layer; 10. Waterproof connector; 11. Sealing ring; 12. Waterproof adhesive; 13. Temperature sensor; 14. Dry-boil protector; 15. Overheat protector; 16. Microprocessor; 17. Power module; 18. Display module; 19. Display screen; 20. Operation button; 21. Limit block; 22. Limit spring; 23. Lock; 24. Locking tongue; 25. Circuit board; 26. Kettle bottom; 27. Magnetic metal sheet. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 This utility model provides a fast-heating electric kettle with double-layer protection, including a kettle body 1, a kettle lid 2, a hinge 3, a heating device, a double-layer protection device, and a control circuit. The kettle lid 2 is connected to the top of the kettle body 1 via the hinge 3. The heating device is located at the bottom of the kettle body 1, and the heating device includes a heating plate 4 and a heating tube 5. The heating plate 4 is embedded in the bottom of the kettle body 1, and the heating tube 5 is spirally wound around the heating plate 4. A heat-conducting medium layer 6, which is thermally conductive silicone grease, is provided between the heating tube 5 and the heating plate 4.

[0023] Please see Figure 2The heating plate 4 and the heating tube 5 are connected to the control circuit via wire 7. Wire 7 is a high-temperature resistant wire. The thermally conductive medium layer 6 is thermally conductive silicone grease. The thermally conductive silicone grease fills the gap between the heating plate 4 and the heating tube 5. A heat insulation layer 8 is provided between the heating plate 4 and the heating tube 5. The heat insulation layer 8 is a ceramic fiber heat insulation layer. The heat insulation layer 8 is provided between the heating plate 4 and the heating tube 5. Wire 7 passes through the heat insulation layer 8. An insulation layer 9 is provided between the wire 7 and the heat insulation layer 8. The insulation layer 9 is a high-temperature insulating tape. The insulation layer 9 covers the wire 7.

[0024] Please see Figure 3 The double-layer protection device includes a mechanical protection device and an electronic protection device. The mechanical protection device includes a bottom limiter and a lid safety lock. The bottom limiter is located at the bottom of the kettle body 1 and includes a limit block 21 and a limit spring 22. The limit block 21 is connected to the bottom of the kettle body 1 through the limit spring 22 and contacts the bottom 26 of the kettle. The lid safety lock is located at the connection between the lid 2 and the kettle body 1. The lid safety lock includes a latch 23 and a latch 24. The latch 23 is fixed to the lid 2, and the latch 24 is fixed to the kettle body 1. The latch 23 and the latch 24 are connected by magnetic force.

[0025] Please see Figure 4 A bottom limiter is located at the bottom of the kettle body 1. A limit block 21 is connected to the bottom of the kettle body 1 via a limit spring 22. The limit block 21 contacts the bottom of the kettle body 26. The limit block 21 is a metal block located at the bottom of the kettle body 1, and the limit spring 22 is a helical spring located between the limit block 21 and the bottom of the kettle body 1. When the electric kettle shifts due to vibration during heating, the limit block 21 remains in contact with the bottom of the kettle body 26 through the elastic action of the limit spring 22, preventing the kettle body from shifting due to vibration during heating.

[0026] Please see Figure 5 The safety lock for the kettle lid is located at the connection between the lid 2 and the kettle body 1. The latch 23 is fixed to the lid 2, and the latch 24 is fixed to the kettle body 1. The latch 23 and the latch 24 are magnetically connected; both are magnetic metal pieces. When the lid 2 is closed, the latch 23 and the latch 24 are magnetically connected, ensuring the lid 2 is safely closed during heating and preventing hot water from splashing out or the lid 2 from accidentally opening.

[0027] Please see Figure 6The control circuit includes a microprocessor 16, a power supply module 17, and a display module 18. The microprocessor 16 is connected to the temperature sensor 13, the dry-boil protector 14, the overheat protector 15, the heating plate 4, and the heating tube 5. The power supply module 17 is connected to the microprocessor 16, and the display module 18 is also connected to the microprocessor 16. The display module 18 is located on the outer wall of the kettle body 1 and includes a display screen 19 and operation buttons 20. The display screen 19 is used to display water temperature, heating status, and fault information, while the operation buttons 20 are used to control the heating and display functions. The microprocessor 16 is a microcontroller, the power supply module 17 is a switching power supply, the display module 18 is an LCD screen, and the operation buttons 20 are touch buttons.

[0028] Specifically, the microprocessor 16 receives detection signals from the temperature sensor 13, the dry-burn protector 14, and the overheat protector 15. Through these sensors and protectors, real-time monitoring and protection of the water temperature and heating status are achieved. When the temperature sensor 13 detects that the water temperature has reached the preset value, the microprocessor 16 controls the heating plate 4 and the heating element 5 to stop heating. When the dry-burn protector 14 detects that the water level is too low or that the kettle is dry-burning, the microprocessor 16 immediately cuts off the power to prevent a dry-burning accident. When the overheat protector 15 detects that the temperature of the heating element 5 is too high, the microprocessor 16 also cuts off the power to prevent an overheating accident. The display screen 19 displays the water temperature, heating status, and fault information in real time. The operation buttons 20 are used to control the heating and display functions, allowing users to easily operate and monitor the working status of the electric kettle.

[0029] The working principle is as follows:

[0030] Heating process: When the user presses the operation button 20 to start the electric kettle, the microprocessor 16 controls the heating plate 4 and the heating tube 5 to start heating. The heating plate 4 is embedded in the bottom of the kettle body 1, and the heating tube 5 is spirally wound under the heating plate 4. A heat-conducting medium layer 6 is provided between the heating tube 5 and the heating plate 4. The heat-conducting medium layer 6 is thermal grease, which improves the heat conduction efficiency and makes the heating more uniform and faster.

[0031] Temperature monitoring and protection: Temperature sensor 13 and dry-burn protector 14 are in contact with heating plate 4, and overheat protector 15 is in contact with heating element 5. Temperature sensor 13 monitors the water temperature in real time. When the water temperature reaches the preset value, microprocessor 16 controls heating plate 4 and heating element 5 to stop heating. Dry-burn protector 14 detects the water level. When the water level is too low or dry-burning occurs, microprocessor 16 immediately cuts off the power. Overheat protector 15 detects the temperature of heating element 5. When the temperature is too high, microprocessor 16 also cuts off the power.

[0032] Mechanical protection: A bottom limiter is located at the bottom of the kettle body 1. The limiter block 21 is connected to the bottom of the kettle body 1 via a limiter spring 22. The limiter block 21 contacts the bottom 26 of the kettle to prevent the kettle body from shifting due to vibration during heating. A safety lock for the lid is located at the connection between the lid 2 and the kettle body 1. The latch 23 and the locking tongue 24 are magnetically connected to ensure the safe closure of the lid 2 during heating, preventing hot water from splashing out or the lid 2 from opening accidentally.

[0033] Display and control: The display screen 19 displays the water temperature, heating status and fault information in real time, and the operation buttons 20 are used to control the heating and display functions, so that users can easily operate and monitor the working status of the electric kettle.

[0034] The specific application scenarios for this utility are as follows:

[0035] In the home or office, users can start the electric kettle and control the heating process via operation button 20. Temperature sensor 13 monitors the water temperature in real time. When the water temperature reaches the preset value, microprocessor 16 controls the heating plate 4 and heating element 5 to stop heating, ensuring the water temperature reaches the desired level. Dry-boil protector 14 detects the water level to prevent dry-boil accidents; overheat protector 15 detects the temperature of heating element 5 to prevent overheating accidents. Bottom limiters and lid safety locks ensure the safety and reliability of the electric kettle during the heating process. The display screen 19 and operation buttons 20 allow users to easily operate and monitor the kettle's operating status, improving the user experience.

Claims

1. A fast-heating electric kettle with double-layer protection, comprising a kettle body, a heating device, a double-layer protection device, and a control circuit, characterized in that: The kettle body consists of a kettle body (1) and a kettle lid (2). The kettle lid (2) is connected to the top of the kettle body (1) by a hinge (3). A heating device is provided at the bottom of the kettle body (1). The heating device includes a heating plate (4) and a heating tube (5). The heating plate (4) is embedded in the bottom of the kettle body (1). The heating tube (5) is spirally wound around the heating plate (4). A heat-conducting medium layer (6) is provided between the heating tube (5) and the heating plate (4). The heating plate (4) and the heating tube (5) are connected by a heat-conducting medium layer (6). The control circuit is connected via a wire (7) and is mounted on a circuit board (25) at the bottom of the kettle body (1). The circuit board (25) is equipped with a temperature sensor (13), a dry-burn protector (14), and an overheat protector (15). The temperature sensor (13) and the dry-burn protector (14) are in contact with the heating plate (4), and the overheat protector (15) is in contact with the heating tube (5). The double-layer protection device includes a mechanical protection device and an electronic protection device. The mechanical protection device... The device includes a bottom limiter and a lid safety lock. The bottom limiter is located at the bottom of the body (1) and includes a limit block (21) and a limit spring (22). The lid safety lock is located at the connection between the lid (2) and the body (1) and includes a latch (23) and a tongue (24). The electronic protection device includes a temperature sensor (13), a dry-burn protector (14), an overheat protector (15), and a control circuit. The control circuit includes a microprocessor (16) and a power supply. The microprocessor (16) is connected to the temperature sensor (13), the dry burn protector (14), the overheat protector (15), the heating plate (4), and the heating tube (5), respectively. The power module (17) is connected to the microprocessor (16), and the display module (18) is connected to the microprocessor (16). The display module (18) is located on the outer wall of the kettle body (1). The display module (18) includes a display screen (19) and operation buttons (20).

2. The rapid heating electric kettle with double-layer protection according to claim 1, characterized in that: The conductor (7) is a high-temperature resistant conductor, the thermally conductive medium layer (6) is thermally conductive silicone grease, the thermally conductive silicone grease fills the gap between the heating plate (4) and the heating tube (5), a heat insulation layer (8) is provided between the heating plate (4) and the heating tube (5), the heat insulation layer (8) is a ceramic fiber heat insulation layer, the heat insulation layer (8) is provided between the heating plate (4) and the heating tube (5), the conductor (7) passes through the heat insulation layer (8), an insulation layer (9) is provided between the conductor (7) and the heat insulation layer (8), the insulation layer (9) is a high-temperature insulating tape, the insulation layer (9) covers the conductor (7).

3. The rapid heating electric kettle with double-layer protection according to claim 1, characterized in that: A waterproof connector (10) is provided at the connection between the wire (7) and the control circuit. The waterproof connector (10) is located at the bottom of the body (1). A sealing ring (11) is provided at the connection between the waterproof connector (10) and the wire (7). The sealing ring (11) is a silicone rubber sealing ring. The sealing ring (11) is located at the connection between the waterproof connector (10) and the wire (7). A waterproof adhesive (12) is provided at the connection between the wire (7) and the waterproof connector (10). The waterproof adhesive (12) is an epoxy resin waterproof adhesive. The waterproof adhesive (12) covers the connection between the wire (7) and the waterproof connector (10).

4. A rapid-heating electric kettle with double-layer protection according to claim 1, characterized in that: The temperature sensor (13) and the dry-burn protector (14) are respectively connected to the microprocessor (16) via wires. The overheat protector (15) is connected to the microprocessor (16) via wires. The temperature sensor (13) and the dry-burn protector (14) are respectively located on the heating plate (4). The overheat protector (15) is located on the heating tube (5).

5. A rapid-heating electric kettle with double-layer protection according to claim 1, characterized in that: The limiting block (21) is connected to the bottom of the pot body (1) through the limiting spring (22). The limiting block (21) is in contact with the bottom of the pot (26). The limiting block (21) is a metal block located at the bottom of the pot body (1). The limiting spring (22) is a helical spring located between the limiting block (21) and the bottom of the pot body (1).

6. A rapid heating electric kettle with double-layer protection according to claim 1, characterized in that: The buckle (23) is fixed on the lid (2), and the latch (24) is fixed on the body (1). The buckle (23) and the latch (24) are connected by magnetic force. The buckle (23) is a magnetic metal sheet, and the latch (24) is a magnetic metal sheet.

7. A rapid heating electric kettle with double-layer protection according to claim 1, characterized in that: The microprocessor (16) is a single-chip microcomputer, the power module (17) is a switching power supply, the display module (18) is a liquid crystal display screen, and the operation button (20) is a touch button.

8. A rapid heating electric kettle with double-layer protection according to claim 1, characterized in that: The display screen (19) is used to display water temperature, heating status and fault information, and the operation button (20) is used to control the heating and display functions.

9. A rapid heating electric kettle with double-layer protection according to claim 1, characterized in that: The wire (7) passes through the waterproof connector (10), and a waterproof adhesive (12) is provided at the connection between the wire (7) and the waterproof connector (10). The waterproof adhesive (12) is an epoxy resin waterproof adhesive, and the waterproof adhesive (12) covers the connection between the wire (7) and the waterproof connector (10).