The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2025
Filed:
Aug. 30, 2022
Zhejiang Dunan Artificial Environment Co., Ltd., Zhejiang, CN;
Yuchen He, Zhejiang, CN;
Yonghao Chen, Zhejiang, CN;
Shaojun Zhan, Zhejiang, CN;
Kepeng Zhang, Zhejiang, CN;
Jinqiang Lou, Zhejiang, CN;
Jun Zhao, Zhejiang, CN;
Leqiang Liu, Zhejiang, CN;
ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO., LTD., Zhejiang, CN;
Abstract
Disclosed is an electronic expansion valve. The electronic expansion valve includes a valve seat provided with a valve cavity and a valve port, wherein the valve port is arranged at an end portion of the valve cavity; a guide sleeve fixedly arranged on the valve seat, the guide sleeve is provided with a first guide hole, and the first guide hole is in communication with the valve cavity; and a valve needle movably arranged in the guide sleeve, wherein a first end of the valve needle penetrates out of the first guide hole to be arranged corresponding to the valve port, the valve needle is in clearance fit with the first guide hole, the valve needle is configured to control the valve port to be opened or closed, and a swingable amplitude of the valve needle in the first guide hole ranges from 0.4° to 2.4°.