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. 15, 2016
Filed:
Jun. 26, 2012
Guohua Xu, Zhejiang Province, CN;
Ming LV, Zhejiang Province, CN;
Qingyong Wang, Zhejiang Province, CN;
Guohua Xu, Zhejiang Province, CN;
Ming Lv, Zhejiang Province, CN;
Qingyong Wang, Zhejiang Province, CN;
Zhejiang Sanhua Co., Ltd., Zhejiang, CN;
Abstract
A flow control valve comprises a valve seat () having a valve port () in its valve chamber and a valve rod () opening or closing the valve port (). A sleeve protrusion part () projects upward from the valve port () in an axial direction thereof. The valve rod () is tubular and is cylindrical at the lower end. An open slot () matching with a flow curve is provided in the circumferential side wall of one of the sleeve protrusion part () and the lower end of the valve rod (). One of the sleeve protrusion part () and the lower end of valve rod () is inserted into or extracted from the other to disconnect or connect the open slot () with the valve port (). The structural design of the flow control valve can balance the refrigerant pressure on the valve rod () in the axial direction while ensuring that the required flow curve can be obtained.