What are solenoid valve coils?

Solenoid valve coils are components that control the opening and closing of solenoid valves in steam valve applications. They feature a distinctive ribbed coil design and convert electrical energy into linear motion to control the opening and closing of solenoid valves. These coils are ideal for use in supermarket refrigeration and air conditioning systems.

How much energy does a solenoid valve need?

So an ideal solenoid valve should have just enough initial electromagnetic lifting force to counter both the spring tension and the hydraulic forces. But once flow starts and hydraulic force has diminished, the valve needs to consume only enough energy to compress the spring.

What is the future of solenoid valves?

The challenge for the future lies in a sustainable and energy-saving solenoid valve solution. Valves with electromagnetic coil systems are widespread in order to automatically control gaseous and liquid media. Their energy efficiency, lower noise emissions and associated long maintenance intervals are becoming more and more important today.

Should a solenoid coil be AC or DC?

Exciting a simple solenoid coil with AC rather than DC power, for example, can provide higher forces in opening a poppet valve and thus may help counter higher differential pressures of the fluid at start up, but DC power may provide other advantages, such as ease of wiring and reduced shock hazard.

How long does a solenoid coil last?

If the current switching system mentioned above can reduce the output of conventional 11-watt solenoid coil by 2 watts, it would reduce coil temperature by about 40 degrees C, resulting in a lifetime increase of 2^(40/10), or 16, meaning that you could extend the service life of a solenoid coil from 5 years to 80 years.

What happens when a solenoid valve opens?

As the solenoid valve opens, the air gap quickly narrows. The core accelerates as the magnetic circuit becomes more efficient, increasing the coil’s inductance, and thus the impedance, dramatically. The increased impedance resulting from this initial inrush decreases the current.