company news about Working principle of electric actuator

The electric actuator is fixed to the valve with a nut. When the indoor temperature reaches the preset temperature of the temperature controller, the positive thermistor in the electric actuator starts working, and the valve is closed by heating the thermal expansion device. When the indoor temperature drops, the thermostat senses the change and transmits a signal to the electric actuator to cool it down, and the valve switch opens.

How do electric actuators work – The working principle of electric actuated valves is based on converting electrical energy into mechanical motion. Electrical actuators are used to control the movement of various mechanisms in a wide range of applications.

There are several types of electrical actuators, but the most common ones work based on the principles of electromagnetism or piezoelectricity.

• Electromagnetic actuators consist of a wire coil wrapped around a magnetic core. When an electrical current is passed through the coil, it creates a magnetic field that interacts with the magnetic core, causing it to move. The amount and direction of the movement depend on the polarity and strength of the magnetic field, as well as the physical characteristics of the actuator.
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• Piezoelectric actuators use a material, such as quartz or ceramic, that generates an electric charge when it is subjected to mechanical stress. When a voltage is applied to the material, it causes it to expand or contract, generating mechanical motion. The amount and direction of the motion depend on the polarity and magnitude of the applied voltage, as well as the physical characteristics of the actuator.

In both types of electrical actuators, the motion generated can be used to control the movement of a mechanism. This is achieved by connecting the actuator to the mechanism using a mechanical linkage or coupling, which allows the motion of the actuator to be transmitted to the mechanism.