Patent ID: 11959561
Assignee: ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 24:
25. An electronic expansion valve, comprising:
a valve seat (10) provided with an inlet (11), an outlet (12) and a communication channel (13) in communication with the inlet (11) and the outlet (12);
an actuator (20) movably mounted in the valve seat (10), wherein the actuator (20) is provided with a first position to block the communication channel (13) and a second position to avoid the communication channel (13); and
a driving mechanism (30) connected to the actuator (20) to drive the actuator (20) to move between the first position and the second position, wherein the driving mechanism (30) comprises at least one noise reduction member to reduce noise of the electronic expansion valve, wherein the electronic expansion valve comprises:
a first connection pipe (4-2) sleeved an end of the valve seat (10); wherein
the end of the valve seat (10) is provided with an annular groove structure (4-12) and provided with a boss structure (4-11) connected to the annular groove structure (4-12);
a welding ring (4-3) clamped into a groove of the annular groove structure (4-12) and connected to an inner wall of the first connection pipe (4-2); and
the valve seat (10) is in clearance fit with the first connection pipe (4-2), and the welding ring (4-3) is in interference fit with the first connection pipe (4-2).