Electronic expansion valve and methods for calibrating an electronic expansion valve

An electronic expansion valve comprising:

• an inlet, an outlet, an armature, a stop member, a biasing member and a solenoid coil,
• wherein the armature directly or indirectly rests against the stop member in the closed position of the valve,
• wherein the biasing member provides a biasing force on the armature towards a closing direction to stop a fluid flow from the inlet to the outlet,
• wherein the solenoid coil provides a magnetic force on the armature towards an opening direction to allow a fluid flow from the inlet to the outlet if the solenoid coil is provided with an electric current,
• wherein a pressure difference between the inlet pressure and the outlet pressure provides a differential pressure force on the armature towards an opening direction to allow a fluid flow from the inlet to the outlet,
• wherein the armature is displaced away from the stop member to allow a fluid flow from the inlet to the outlet at the sum of the magnetic force and the differential pressure force on the armature exceeds the biasing force, and
• wherein, a throttling element is arranged between the armature and the stop member.

An electronic expansion valve comprising:

• an inlet, an outlet, an armature, a stop member, a biasing member and a solenoid coil,
• wherein the armature directly or indirectly rests against the stop member in the closed position of the valve,
• wherein the biasing member provides a biasing force on the armature towards a closing direction to stop a fluid flow from the inlet to the outlet,
• wherein the solenoid coil provides a magnetic force on the armature towards an opening direction to allow a fluid flow from the inlet to the outlet if the solenoid coil is provided with an electric current,
• wherein a pressure difference between the inlet pressure and the outlet pressure provides a differential pressure force on the armature towards an opening direction to allow a fluid flow from the inlet to the outlet,
• wherein the armature is displaced away from the stop member to allow a fluid flow from the inlet to the outlet at the sum of the magnetic force and the differential pressure force on the armature exceeds the biasing force, and
• wherein the stop member comprises an orifice with a valve seat as well as an orifice channel, wherein the orifice channel is arranged between the inlet and the orifice in the direction of fluid flow.