Abstract: Some embodiments of the present invention provide an electronic expansion valve and assembling method of electronic expansion valve, the electronic expansion valve includes: a housing; a guide sleeve; a screw; a rotor being drivingly connected with the screw; and a valve needle assembly movably disposed in the housing, one end of the screw being connected with the valve needle assembly so as to drive the valve needle assembly to move axially by means of the screw. A guide segment and a press-fit segment which are in communication with each other are disposed between an inner wall of the housing and an outer wall of the guide sleeve, a spacing between the guide sleeve and the housing located on the guide segment is greater than a spacing between the guide sleeve and the housing located on the press-fit segment.

Abstract: The present disclosure provides an electronic expansion valve and an air conditioning system using the same. The electronic expansion valve includes a valve body, a valve needle component, and a guide sleeve. The guide sleeve is installed in the valve body and configured to guide a movement of the valve needle component, the valve needle component is arranged on the guide sleeve, the valve needle component includes a valve needle and a screw rod installed in the valve needle, a sealing groove configured to accommodate a sealing ring is provided in an outer side wall of the valve needle, and an oil storage groove is located between the guide sleeve and the valve needle.