US Patent 11703258 Electronic expansion valve

An electronic expansion valve includes a valve component and a stator component; the valve component includes a valve body assembly, a valve core, a threaded transmission assembly and a rotor; the valve body assembly is provided with a valve port, and the valve core is driven by the threaded transmission assembly to control an opening of the valve port; a wear-resistant coating is arranged on a contact surface of at least one of components having relative movement of the electronic expansion valve, the wear-resistant coating is applied by spraying, and the wear-resistant coating has a thickness of 5 to 8 microns; and the material of the wear-resistant coating includes a molybdenum disulfide material and a polytetrafluoroethylene material.