Abstract: A valve needle assembly and an electronic expansion valve having same. The valve needle assembly includes: a valve sleeve, the valve sleeve having a cavity, and the valve sleeve having a first end and a second end arranged opposite each other; a bushing movably arranged in the cavity, the bushing being in limiting fit with the first end of the valve sleeve, and the bushing being used for driving the valve sleeve to move; a spring arranged in the cavity, wherein one end of the spring is connected with the bushing, and the other end of the spring is connected with the second end of the valve sleeve; and a sealing member fixedly arranged at the second end of the valve sleeve, the sealing member being configured for closing a valve port.

Abstract: An electronic expansion valve (1-100) is provided. The electronic expansion valve (1-100) includes: a screw (1-31), a valve needle (1-22), and an elastic member (1-25). One end of the elastic member (1-25) acts on the screw (1-31) and the other end acts on the valve needle (1-22). A bearing (1-23) is arranged between the screw (1-31) and the valve needle (1-22). The bearing (1-23) has an inner ring and an outer ring. One of the screw (1-31) and the valve needle (1-22) is fixed with the inner ring of the bearing (1-23), and the other acts on the outer ring of the bearing (1-23) through the elastic member (1-25). An air conditioning system using the electronic expansion valve (1-100) is provided. In the electronic expansion valve (1-100), the bearing (1-23) is arranged between the valve needle (1-22) and the screw (1-31).

Abstract: An electronic expansion valve (1-100) is provided. The electronic expansion valve (1-100) includes: a screw (1-31), a valve needle (1-22), and an elastic member (1-25). One end of the elastic member (1-25) acts on the screw (1-31) and the other end acts on the valve needle (1-22). A bearing (1-23) is arranged between the screw (1-31) and the valve needle (1-22). The bearing (1-23) has an inner ring and an outer ring. One of the screw (1-31) and the valve needle (1-22) is fixed with the inner ring of the bearing (1-23), and the other acts on the outer ring of the bearing (1-23) through the elastic member (1-25). An air conditioning system using the electronic expansion valve (1-100) is provided. In the electronic expansion valve (1-100), the bearing (1-23) is arranged between the valve needle (1-22) and the screw (1-31).