Electric water heater with protection against electric leakage
By installing a leakage protection device on the outlet pipe of the electric water heater, and using an electromagnet to drive the moving iron core and sealing gasket to close the outlet pipe, the risk of electric shock when the electric water heater leaks is eliminated, and safety and reliability are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN YUANSHANGQUAN ELECTRIC CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-19
AI Technical Summary
Electric water heaters pose a high risk of electric shock, especially when the body is wet during showering. Current can easily flow through the water or metal parts into the body, causing fatal electric shock accidents. Existing leakage protection devices are easily overlooked or removed, and cannot provide effective protection.
Install leakage protection components on the outlet pipe of the electric water heater, including a leakage detector, an electromagnet, and a one-way valve. When leakage is detected, the electromagnet drives the moving iron core and the sealing gasket to close the outlet pipe, preventing water from flowing in and directly cutting off the power supply to protect the user.
It effectively prevents water from flowing through the human body in case of leakage, avoids electric shock accidents, improves the safety and reliability of electric water heaters, and reduces the risk of leakage protection devices being ignored or removed.
Smart Images

Figure CN224381787U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a water heater, specifically an electric water heater with leakage protection, and belongs to the field of water heater technology. Background Technology
[0002] A water heater is a device that heats cold water into hot water. It is widely used in homes and public places for bathing, cleaning, and other daily needs. Based on the heating energy source, water heaters are mainly divided into electric water heaters, gas water heaters, and solar water heaters. Among them, electric water heaters use electricity as a heating source and have advantages such as easy installation, safe use, and stable heating. They are divided into storage type and instantaneous type, suitable for various household environments, and are one of the most common types of water heaters currently available.
[0003] Electric water heaters pose a high risk of electric shock, especially when the body is wet during showering, which reduces resistance and makes it easy for current to flow through the water or metal parts, potentially causing fatal electric shock accidents.
[0004] In existing technologies, leakage protection is often achieved by installing a residual current device (RCD). The RCD detects the current difference between the live and neutral wires. If leakage occurs, such as current flowing to the ground wire or a human body, it automatically cuts off the power. However, if the grounding system itself fails, the RCD will not function effectively. Furthermore, RCDs are externally installed, relying on user maintenance and are easily overlooked or removed. Therefore, this paper proposes an electric water heater with leakage protection. Utility Model Content
[0005] This utility model proposes an electric water heater with leakage protection, which can directly shut off the water outlet pipe when the electric water heater leaks electricity, thereby solving the problem of water flowing through the human body and causing fatal electric shock accidents.
[0006] This utility model is achieved through the following technical solution: an electric water heater with leakage protection, including an electric water heater, the electric water heater including an outlet pipe, the electric water heater also including a tank and an inlet pipe, the tank being composed of an outer shell, an inner tank and an insulation layer, the inlet pipe and the outlet pipe being installed at the bottom of the tank, and the inlet pipe and the outlet pipe being connected to the inside of the tank.
[0007] Both the inlet and outlet pipes are equipped with one-way valves. A heating rod is installed inside the tank. A control component is installed on the outside of the tank. The control component is used to adjust the working status of each component in the tank's water pipes, such as setting the temperature, controlling the heating time, and displaying operating parameters.
[0008] An anode protection magnesium rod is installed at the bottom of the tank, extending into the interior of the tank. The anode protection magnesium rod protects the interior of the tank from ion corrosion in the water through its own electrochemical corrosion. Magnesium is more reactive than iron. This extends the service life of the tank.
[0009] It also includes a leakage protection component, which is installed on the water outlet pipe. The leakage protection component includes a pipe body, and a valve body is connected to the pipe body. A valve cover and a drive component are installed inside the valve body, and a sealing gasket is fixed on the valve cover.
[0010] The pipe body is equipped with a baffle and a sealing ring. The baffle is also installed inside the pipe body via a driving component. The valve cover is used to control the communication state between the pipe body and the valve body. Figure 3 When the valve is in the leakage protection state, the pipe body and valve body are not connected, and water cannot enter the outlet pipe.
[0011] The driving component includes a leakage current monitor, which is installed on the tank body. The driving component also includes an electromagnet, which is fixed to the inner wall of the valve body. A moving iron core is slidably arranged inside the valve body, and the left end of the moving iron core is fixed to the valve cover.
[0012] The moving iron core is slidably disposed in the tube body through an elastic component, which includes a first compression spring and a second compression spring. The second compression spring is fixed between the right end of the moving iron core and the valve body, and the first compression spring is fixed between the right side of the valve cover and the cross plate. The elastic force of the first compression spring and the second compression spring can drive the moving iron core to reset.
[0013] The valve body has a horizontal plate, and the moving iron core is slidably disposed in the valve body through the horizontal plate. A guide sleeve is fixed on the horizontal plate, and the moving iron core is slidably connected in the guide sleeve. The horizontal plate and the guide sleeve can guide the moving iron core.
[0014] This utility model provides an electric water heater with leakage protection, which has the following beneficial effects:
[0015] 1. When a leakage current occurs in this electric water heater with leakage protection, the leakage current detector will detect the leakage information and energize the electromagnet. The electromagnet's magnetism will drive the moving iron core, valve cover, and sealing gasket to move. The valve cover and sealing gasket will then press against the sealing ring and baffle, preventing water from entering the outlet pipe. This device can directly shut off the outlet pipe when a leakage occurs in the tank, thus solving the problem of water flowing through the human body and causing fatal electric shock accidents. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic diagram of the internal structure of the tank of this utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of the pipe body and valve body of this utility model;
[0019] Figure 4 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.
[0020] Explanation of reference numerals in the attached figures
[0021] 1. Electric water heater; 101. Tank; 102. Inlet pipe; 103. Outlet pipe; 104. Anode protection magnesium rod; 105. Control components; 106. Heating rod;
[0022] 2. Leakage protection components; 201. Pipe body; 202. Valve body; 203. Valve cover; 204. Baffle; 205. Sealing ring; 206. Electromagnet; 207. Moving iron core; 208. First compression spring; 209. Second compression spring; 210. Guide sleeve; 211. Horizontal plate; 212. Sealing gasket; 213. Leakage monitoring instrument. Detailed Implementation
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.
[0024] Please see Figures 1-4 The present invention proposes the following implementation scheme: an electric water heater with leakage protection, including an electric water heater 1, an electric water heater 1 including a water outlet pipe 103, an electric water heater 1 also including a tank body 101 and a water inlet pipe 102, the tank body 101 is composed of an outer shell, an inner tank and an insulation layer, the water inlet pipe 102 and the water outlet pipe 103 are both installed at the bottom of the tank body 101, and the water inlet pipe 102 and the water outlet pipe 103 are connected to the inside of the tank body 101.
[0025] Please refer to this carefully. Figure 1 and Figure 2 One-way valves are installed in both the inlet pipe 102 and the outlet pipe 103. A heating rod 106 is installed inside the tank 101. A control component 105 is installed on the outside of the tank 101. The control component 105 is used to adjust the working status of each component in the water pipe of the tank 101, such as setting the temperature, controlling the heating time, and displaying the operating parameters.
[0026] An anode protection magnesium rod 104 is installed at the bottom of the tank 101. The anode protection magnesium rod 104 extends into the interior of the tank 101. The anode protection magnesium rod 104 protects the interior of the tank 101 from ion corrosion in the water through its own electrochemical corrosion. Magnesium is more reactive than iron. This extends the service life of the tank.
[0027] Please refer to this carefully. Figure 3 and Figure 4It also includes a leakage protection component 2, which is installed on the water outlet pipe 103. The leakage protection component 2 includes a pipe body 201, a valve body 202 connected to the pipe body 201, a valve cover 203 and a drive component are installed inside the valve body 202, and a sealing gasket 212 is fixed on the valve cover 203.
[0028] A baffle 204 and a sealing ring 205 are provided inside the pipe body 201. The baffle 204 is provided inside the pipe body 201 via a driving component. The valve cover 203 is used to control the communication state between the pipe body 201 and the valve body 202. Figure 3 When the system is in leakage protection mode, there is no connection between pipe body 201 and valve body 202, and water cannot enter the outlet pipe 103.
[0029] Please refer to this carefully. Figure 3 and Figure 4 The driving component includes a leakage current monitor 213, which is installed on the tank 101. The driving component also includes an electromagnet 206, which is fixed to the inner wall of the valve body 202. A moving iron core 207 is slidably arranged inside the valve body 202, and the left end of the moving iron core 207 is fixed to the valve cover 203.
[0030] The moving iron core 207 is slidably disposed inside the tube body 201 through an elastic component. The elastic component includes a first compression spring 208 and a second compression spring 209. The second compression spring 209 is fixed between the right end of the moving iron core 207 and the valve body 202, and the first compression spring 208 is fixed between the right side of the valve cover 203 and the cross plate 211. The elastic force of the first compression spring 208 and the second compression spring 209 can drive the moving iron core 207 to reset.
[0031] The valve body 202 has a horizontal plate 211 inside. The moving iron core 207 is slidably disposed inside the valve body 202 through the horizontal plate 211. A guide sleeve 210 is fixed on the horizontal plate 211. The moving iron core 207 is slidably connected inside the guide sleeve 210. The horizontal plate 211 and the guide sleeve 210 can guide the moving iron core 207.
[0032] Working principle: When leakage occurs inside the tank 101, the leakage detector 213 will detect the leakage information. At this time, the electromagnet 206 is energized. The magnetism of the electromagnet 206 can drive the moving iron core 207 to move. In turn, the moving iron core 207 drives the valve cover 203 and the sealing gasket 212 to move. The valve cover 203 and the sealing gasket 212 abut against the sealing ring 205 and the baffle 204, so that water cannot enter the water outlet pipe 103. This device can directly shut off the water outlet pipe 103 when leakage occurs in the tank 101, so as to solve the problem of water flowing through the human body and causing fatal electric shock accidents.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An electric water heater with leakage protection, comprising an electric water heater (1), said electric water heater (1) including a water outlet pipe (103), characterized in that: It also includes a leakage protection component (2), which is installed on the water outlet pipe (103); The leakage protection component (2) includes a tube body (201), a valve body (202) is connected to the tube body (201), a valve cover (203) and a driving component are provided inside the valve body (202), a baffle (204) and a sealing ring (205) are provided inside the tube body (201), and a baffle (204) is provided inside the tube body (201) through the driving component. The valve cover (203) is used to control the connection state between the tube body (201) and the valve body (202).
2. The electric water heater with leakage protection according to claim 1, characterized in that: The electric water heater (1) also includes a tank (101) and an inlet pipe (102). The inlet pipe (102) and the outlet pipe (103) are both installed at the bottom of the tank (101) and are connected to the inside of the tank (101). A one-way valve is installed in both the inlet pipe (102) and the outlet pipe (103). A heating rod (106) is installed inside the tank (101), and a control component (105) is installed on the outside of the tank (101).
3. The electric water heater with protection against electric leakage according to claim 2, characterized in that: An anode protection magnesium rod (104) is installed at the bottom of the tank (101), and the anode protection magnesium rod (104) extends into the interior of the tank (101).
4. The electric water heater with protection against electric leakage according to claim 1, characterized in that: A sealing gasket (212) is fixed on the valve cover (203).
5. The electric water heater with leakage protection according to claim 1, characterized in that: The driving component includes a leakage current monitor (213), which is installed on the tank (101). The driving component also includes an electromagnet (206), which is fixed to the inner wall of the valve body (202). A moving iron core (207) is slidably arranged inside the valve body (202). The left end of the moving iron core (207) is fixed to the valve cover (203). The moving iron core (207) is slidably arranged inside the pipe body (201) through an elastic component.
6. The electric water heater with protection against electric leakage according to claim 5, characterized in that: The valve body (202) has a horizontal plate (211) inside. The moving iron core (207) is slidably disposed inside the valve body (202) through the horizontal plate (211). A guide sleeve (210) is fixed on the horizontal plate (211), and the moving iron core (207) is slidably connected inside the guide sleeve (210).
7. The electric water heater with protection against electric leakage according to claim 6, characterized in that: The elastic component includes a first compression spring (208) and a second compression spring (209). The second compression spring (209) is fixed between the right end of the moving iron core (207) and the valve body (202), and the first compression spring (208) is fixed between the right side of the valve cover (203) and the cross plate (211).