Electric heating water tank with built-in electric heating element protection device

This utility model relates to a built-in protection device for the electric heating element in an electric water tank. To prevent damage to the heating element due to user error and dry burning, a water storage box containing the heating element and other components is installed inside the water tank, and temperature sensing devices are installed inside and outside the tank. This completely solves a major problem in the practical application of electric water tanks. This utility model is ingeniously conceived, simple in design, low in cost, and provides effective protection.

Instruction Manual for Built-in Electric Heating Element Protection Device in Electric Water Tanks

This utility model relates to the field of electric heating technology.

As is well known, drop-down electric water tanks are convenient to use, allow for on-demand water access, and have low pressure requirements, making them popular with consumers and widely used in daily life. However, certain problems exist in the actual use of these water tanks. Specifically, due to improper user operation, heating the water tank before the water level reaches the heating element can cause it to dry-burn and be damaged. Various methods have been used to solve this problem, with varying results and costs.

The purpose of this utility model is to provide a built-in electric heating element protection device for electric water tanks to solve the aforementioned problems.

This utility model is implemented as follows: A water storage box with an open upper surface is installed at the location of the built-in electric heating element in the water tank, housing the electric heating element, the main thermostat sensing tube, and the anode rod. One end of the water storage box is fixed to the water tank wall. The main thermostat and the overheat protection thermostat are located outside the water tank and mounted on the electric heating element socket. The main temperature sensor is inserted into the sensing tube.

This utility model, based on practical application, completely solves the problem of electric heating element dry-burning damage through a simple and ingenious design. Even after the water tank is emptied, water can still be stored in the storage box. Even if the user accidentally heats the empty tank, the abnormally rapid rise in the water temperature in the storage box will cause the main thermostat to disconnect in time, effectively protecting the electric heating element from damage. In the event of failure of the main thermostat, the overheat protection thermostat can also reliably operate during the boiling of the water in the storage box, providing power-off protection.

The attached diagram shows a schematic of the built-in heating element protection device in an electrically heated water tank.

Example: As shown in the attached diagram, inside the water tank, there is a water storage box 1 with an open upper surface that encloses the heating element 4, the main thermostat temperature sensing tube 3, and the anode rod 2. One end of the water storage box 1 is fixed to the water tank wall 6. The main thermostat 8 and the overheat protection thermostat 9 are located outside the water tank 6 and are mounted on the heating element socket 7. The main temperature sensor 10 is inserted into the temperature sensing tube 3.