018F6701 BE230AS 220VAC EVR Refrigeration Solenoid Valve Coil

018F6701 BE230AS 220VAC EVR Refrigeration Solenoid Valve Coil

EVR series refrigeration solenoid valve coil is suitable for various kinds of high humidity, frequent temperature fluctuations, and long-life sealed coils.The solenoid coil replaces the ordinary wire with a wire coated with an insulating varnish. The wire is wound into a spiral shape, and a real solenoid coil is formed by the magnetic field existing around the wire. The replacement of the wire saves space, and therefore, the solenoid coil can The minimum magnetic field is used to form the highest magnetic field strength. Simply put, the formation of the solenoid coil is the process of electromagnetism, and the solenoid forming has an important influence on the forming properties of the light alloy.Therefore, the selection of the coil should be determined according to the needs of the deformation part of the workpiece.

Technical parameter of EVR series refrigeration solenoid valve coils:

Mian dimension of EVR Freezing And Cooling System Solenoid Valve Coils:

Deconstruction diagram of EVR refrigeraiton electromagnetic valve coils:

Production display of AC220V/DC24V solenoid valve coils for freezer cooling system:

The temperature of the solenoid coil is too high, causing burnout:

The movable iron core in the coil of the solenoid valve is attracted by the coil when the valve is energized, and drives the spool to move, thereby changing the conduction state of the valve; the so-called dry or wet only refers to the working environment of the coil, and for the valve action, Great difference.

However, we know that the inductance of an air-core coil is different from the inductance of the iron core in the coil. The former is small and the latter is large. When the coil is connected to alternating current, the impedance generated by the coil is not Similarly, for the same coil, when the same frequency of alternating current is applied, the inductance will change with the position of the core, that is, its impedance changes with the position of the core. When the impedance is small, the current flowing through the coil will increase;

When the coil of the solenoid valve is in the working state (energized), the iron core is sucked to form a closed magnetic circuit, that is, when the inductance is at the maximum state, the heat is normal, but the iron core cannot be smoothly sucked when energized. The inductance of the coil is reduced, the impedance is reduced, and the current is correspondingly increased. This causes the coil current to be too large and the life is affected. Therefore, the oil stains hinder the movement of the iron core, and the action is slow when energized, and even cannot be completely fully absorbed, so that the coil is energized frequently. In a state where the impedance is less than normal, it may be a factor that the coil is often overheated.

For a DC electromagnet, the increase in the temperature of the energized coil is mainly due to the energy consumed by the resistance of the coil being converted into heat, causing the temperature of the wire to rise;

For the AC electromagnet, in addition to the heating temperature rise caused by the resistance of the coil itself, there is another reason, that is, the heating of the iron core, the alternating magnetic field generates an induced current in the iron core, and the current consumes part of the electric energy, causing the iron core to heat up. (Induction cooker is to use this principle to increase the temperature of the iron bottom of the pot), because the coil is wound around the iron core, heat is transferred to the coil, so that the coil temperature rises, in order to reduce the induced current (eddy current) loss of the iron core, AC electromagnets, like transformers, should be insulated with a silicon steel sheet as the core to reduce the loss and reduce the temperature rise.

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