Abstract: Provided in the present invention are a valve needle component and a flow regulating valve. The valve needle component includes: a screw, wherein the screw comprises a first rod section, a second rod section and a third rod section which are connected in sequence, the outer diameter of the first rod section is greater than the outer diameter of the second rod section, and the outer diameter of the second rod section is greater than the outer diameter of the third rod section; a bearing sleeved on the second rod section; and a bushing sleeved on the third rod section, wherein the bushing is welded to the third rod section, and two end surfaces of an inner ring of the bearing respectively abut against an end surface of the first rod section and an end surface of the bushing.

Abstract: The present disclosure provides an electronic expansion valve, which includes: a valve body having an accommodating cavity and a valve port, and the valve port communicates with the accommodating cavity; a guide sleeve, which is disposed in the accommodating cavity; a valve head, which is movably disposed in the guide sleeve and configured for blocking or opening the valve port, and a balance channel is disposed in the valve head so as to enable two ends of the valve head to be communicated; the valve head has a first end and a second end which are oppositely disposed, the first end is configured for blocking the valve port, a refrigerant medium and the first end have a first stress area S1, the refrigerant medium and the second end have a second stress area S2, and ?1.3 mm2?S1?S2?1.3 mm2.

Abstract: An electronic expansion valve, including a valve body, the valve body having an accommodating cavity and a valve port, and the accommodating cavity being in communication with the valve port; a rotor arranged in the accommodating cavity; a stator assembly; a screw rod assembly arranged in the accommodating cavity, the screw rod assembly including a screw rod and a nut sleeve, the rotor being fixedly connected to an end of the screw rod away from the valve port; and a valve sleeve, the screw rod being in driving connection with the valve sleeve, where when the valve port is in a fully open state, the number of pulses is A, and when a central line of the stator assembly coincides with a central line of the rotor, the corresponding number of pulses is B, where 0.3*A?B?0.7*A.

Abstract: Disclosed are a valve needle and an electronic expansion valve having the valve needle. The valve needle is provided with a connecting end and a blocking end that are arranged opposite to each other; the blocking end includes a blocking segment, a first opening segment, and a second opening segment that are sequentially connected in an axial direction; the blocking segment cooperates with a valve port to block the valve port; a cross sectional area of the blocking segment close to the connecting end is greater than a cross sectional area of the blocking segment distant from the connecting end; a cross sectional area of the second opening segment close to the connecting end is greater than a cross sectional area of the second opening segment distant from the connecting end; and a cross sectional area of the first opening segment remains unchanged.

Abstract: Disclosed is a flow regulating valve. The flow regulating valve includes: a valve body structure, where the valve body structure includes a main body and a sealing seat connected with the main body, the sealing seat is provided with a valve port, and the sealing seat is made of a nonmetallic material; and a valve head movably arranged in a cavity of the main body to close or open the valve port, where the valve head is made of a metal material, and a hardness of the sealing seat is less than a hardness of the valve head.

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: Disclosed is a flow regulating valve. The flow regulating valve includes: a valve body, wherein the valve body is provided with a valve port, and an inner wall of the valve port is provided with a first conical surface; and a valve head, wherein an end of the valve head is provided with a fillet, the valve head is movably arranged in the valve body, to close or open the valve port, and when the valve port is closed, the fillet abuts against the first conical surface. The inner wall of the valve port is further provided with a second conical surface, and an end with a smaller diameter of the second conical surface is connected with an end with a larger diameter of the first conical surface.