Electronic expansion valve

The utility model relates to an electronic expansion valve for variable frequency air conditioning systems, comprises a valve body, coils sleeved on the valve body, and a valve seat arranged in the valve body, and is characterized in that the valve body is a pipe with necks at two ends, coil positioning ring grooves are arranged on the external surface and a convex ring is arranged in the internal surface for the positioning of the valve seat. In the prior art, the electronic expansion valves with a cam structure need a secondary brazing process and a secondary argon welding process, which is difficult and inefficient with high cost, long production cycle, and unreliable quality. The utility model has the advantages that the structure is compact, the eccentric countersink pore and small bench are not required, the production process and machining staff are reduced, the cost is minimized, the machining is convenient with higher efficiency, the production cycle is short, the machining is easy due to the brass used as the material for the upper and lower seat of the valve, and the quality is guaranteed.