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:
Dec. 30, 2025
Filed:
Apr. 01, 2024
Bitzer Refrigeration Technology (China) Co., Ltd., Beijing, CN;
Qiang Zhang, Beijing, CN;
Zhipeng Wu, Beijing, CN;
Hongjin Yuan, Beijing, CN;
Chenhui Cui, Beijing, CN;
Junliang Pei, Beijing, CN;
BITZER REFRIGERATION TECHNOLOGY (CHINA) CO., LTD., Beijing, CN;
Abstract
A check valve and a scroll compressor are provided. The check valve includes a valve plate, a washer, a valve stem, and a valve stopper. The valve stem is fixedly arranged between the valve plate and the valve stop, and the valve plate is provided with a valve hole for fluid to flow through. Annular outer, middle and inner stopper edges are provided on a bottom surface of the valve stopper from the edge to the center. A reverse flow hole is provided between the outer and middle stopper edges, and a ventilation port is provided on the middle stopper edge. The ventilation port is configured to connect a gap between the outer and middle stopper edges with the gap between the middle and inner stopper edges if the washer is in contact with the outer, middle and inner stopper edges.