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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.:

US 9383027 B1

PDFFull Text
Date of Patent:
Jul. 05, 2016

Filed:

Jun. 26, 2012

Electronic expansion valve

Applicants:

Ming LV, Zhejiang Province, CN;

Yuzhong Chen, Zhejiang Province, CN;

Inventors:

Ming Lv, Zhejiang Province, CN;

Yuzhong Chen, Zhejiang Province, CN;

Assignee:

Zhejiang Sanhua Co., Ltd., Zhejiang, CN;

Attorney:

Wolf, Greenfield & Sacks, P.C.

Primary Examiner:

Marina Tietjen

Assistant Examiner:

Seth W Mackay-Smith

Int. Cl.
CPC ...
F16K 31/04 (2006.01); F16K 25/00 (2006.01); F16K 1/02 (2006.01); F16K 1/42 (2006.01); F16K 37/00 (2006.01); F16K 3/24 (2006.01); F16K 3/34 (2006.01); F25B 41/06 (2006.01);
U.S. Cl.
CPC ...
F16K 31/047 (2013.01); F16K 3/246 (2013.01); F16K 3/34 (2013.01); F16K 25/005 (2013.01); F16K 31/04 (2013.01); F16K 37/0058 (2013.01); F25B 41/062 (2013.01); F25B 2341/0653 (2013.01); Y02B 30/72 (2013.01);
Abstract

Disclosed in the present invention is an electronic expansion valve, which comprises a valve seat assembly () and a valve housing assembly () connected to the valve seat assembly (). A valve stem assembly () and a valve port () are disposed in the chamber of the valve seat assembly (), and an electrical motor () is situated in the chamber of the valve housing assembly (). The electrical motor () drives the valve stem assembly () to move along an axial direction through a gear system () so as to adjust the flow rate of the fluid flowing through the valve port (). The valve seat assembly () has a split structure, which comprises a valve seat () and a cover () connected to the valve seat () and to the valve housing assembly (). A mounting surface () is formed on the outer side of the valve seat () and a sight glass () is connected thereon. The structure of the expansion valve enables the sight glass () to be easily attached to the valve seat assembly ().

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