| 摘要 |
An electronic expansion valve comprises a valve seat (1), a nut (2) disposed on the valve seat (1), and a lead screw (4) in screw thread fit with the nut (2). With rotation of a magnetic rotor (5), the lead screw (4) drives a valve needle (3) to adjust a valve port flow of the electronic expansion valve. The nut (2) is provided with a nut guiding section (22). The lead screw (4) is provided with a lead screw guiding section (42) that fits the nut guiding section (22). An end portion of the nut (2) close to the nut guiding section (22) is provided with a noise reduction component (8), which is fastened by using a sleeve ring (9). The noise reduction component is disposed above the nut and is fastened by using the sleeve ring, so that the impact strength of the screw thread fit between the lead screw and the nut can be reduced, and the noise produced in operation can be reduced. |
