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:
Mar. 29, 2016
Filed:
Aug. 10, 2012
Caiyi Zhan, Zhejiang Province, CN;
Caiyi Zhan, Zhejiang Province, CN;
Zhejiang Sanhua Co., Ltd., Zhejiang, CN;
Abstract
An electronic expansion valve includes a drive component including a screw rod which reciprocates axially and a nut which cooperates with the screw rod by screw threads, and a lower end of the screw rod forms the valve needle component. A sleeve is fixed in the main valve cavity, an upper portion of the sleeve cooperates with the nut, and a lower end of the sleeve is supported by the valve seat and surrounds the main valve port. The valve core seat is axially movably arranged in the sleeve, and the lower end of the screw rod extends into the sleeve to open and close the valve core valve port. The structural design of the electronic expansion valve prevents an excessive impact on a valve core seat caused by the refrigerant with high pressure when the refrigerant flows forward, thereby preventing the eccentricity of the valve core seat.