Description of the structure of the coil and the heating of the coil

Depending on the overall size, coil volume, rated voltage and rated power, the thickness and number of turns of the wires used to make the coil are different. In order to improve efficiency, the existing volume should be fully utilized. Therefore, in the case where the total size is the same, the difference between the coils is only the thickness and the number of turns of the wires. However, electromagnetic coils that can be used with several voltages are rare.
The power of the coil is all turned into thermal energy. Therefore, in the case of continuous operation, the coil becomes very hot. The maximum power of the coil is related to the maximum temperature the coil can withstand and the way the coil operates (continuous operation or short-term operation). Maximizing the quality of the material and expanding the surface area of the coil ensure timely heat dissipation.
In addition to its own heat, the following factors also affect the temperature of the coil:
■ Ambient temperature
■ Medium temperature
■ Media type (liquid or gas)
■ Thermal radiation capability of the coil
■ Heat flow inside the coil and heat transferred from the solenoid valve to the medium
■ Continuous operation or intermittent operation
In the case of continuous operation and an ambient temperature of 20 ° C, the temperature of the coil surface can reach 80-90 ° C or higher.
The maximum limits (ambient temperature, medium temperature, etc.) have been indicated in the "Technical Data" of the valve. If two or more working parameters appear as limit values in practical applications, the user should consult with us in time to ensure the service life of the valve.