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

Claim 19:
20. The electronic expansion valve according to claim 19, wherein in a direction from a position close to the inlet (11) to a position away from the inlet (11), the second channel sequentially comprises a first sub-channel section (3-401), a second sub-channel section (3-402) and a third sub-channel section (3-403), a diameter of the first sub-channel section (3-401) being larger than a diameter of the second sub-channel section (3-402), and the diameter of the second sub-channel section (3-402) being larger than a diameter of the third sub-channel section (3-403), an outer diameter of the actuator (20) matches the third sub-channel section (3-403), wherein the first pressing block (3-42) sequentially comprises a first step section and a second step section in a direction from a position away from the inlet (11) to a position close to the inlet (11), the first step section is nested in the first sub-channel section (3-401), and the fifth noise reduction member (3-33) is arranged in a space defined by an end face of the first step section, the second channel section (3-402) and the actuator (20); or
the guide sleeve (3-40) further comprises a pressing block groove provided between the first channel and the second channel and coaxial with the first channel and the second channel, wherein a first mounting groove is provided in a wall surface of a side, close to the first channel, of the second channel; a side surface, close to the connection sleeve assembly (3-35), of the first mounting groove is in communication with the pressing block groove, the fifth noise reduction member (3-33) is arranged in the first mounting groove, and the first pressing block (3-42) is fixed in the pressing block groove, so as to prevent the fifth noise reduction member (3-33) from moving close to the connection sleeve assembly (3-35); or
an annular groove is provided in a side, away from the connection sleeve assembly (3-35), of the guide sleeve body (3-41), the annular groove is connected with the first channel, the first pressing block (3-42) is mounted in the annular groove, the actuator (20) at least partially penetrates the first channel, the first channel is in clearance fit with the actuator (20), the first mounting groove is provided in the wall surface of the second channel, and the fifth noise reduction member (3-33) is at least partially mounted in the first mounting groove.