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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 12706510 B1

PDFFull Text
Date of Patent:
Aug. 11, 2026

Filed:

Nov. 08, 2023

Magnetic levitation motor sealing-cooling apparatus for refrigeration system and method therefor

Applicant:

Shanghai Marine Diesel Engine Research Institute, Shanghai, CN;

Inventors:

Yan Zhang, Shanghai, CN;

Qiye Jin, Shanghai, CN;

Jingya Feng, Shanghai, CN;

Pingting Wang, Shanghai, CN;

Yu Bao, Shanghai, CN;

Xiaobo Li, Shanghai, CN;

Yue Li, Shanghai, CN;

Shien Tu, Shanghai, CN;

Qingpeng Ji, Shanghai, CN;

Wei Chen, Shanghai, CN;

Assignee:

SHANGHAI MARINE DIESEL ENGINE RESEARCH INSTITUTE, Shanghai, CN;

Attorneys:

NKL Law

Allen Xue

Primary Examiner:

Tulsidas C Patel

Assistant Examiner:

Mohammed Ahmed Qureshi

Int. Cl.
CPC ...
H02K 9/10 (2006.01); F25B 41/20 (2021.01); F25B 41/30 (2021.01); F25B 41/40 (2021.01); H02K 5/12 (2006.01); H02K 9/19 (2006.01);
U.S. Cl.
CPC ...
H02K 9/10 (2013.01); F25B 41/20 (2021.01); F25B 41/30 (2021.01); F25B 41/40 (2021.01); H02K 5/12 (2013.01); H02K 9/19 (2013.01);
Abstract

In a magnetic levitation motor sealing-cooling apparatus for a refrigeration system motors of a first-stage compressor () and a second-stage compressor () are cooled by combining air cooling and water cooling. The cooling gas of second-stage compressor () is taken from a working medium cooled at an outlet of the first-stage compressor (). The cooling gas of the first-stage compressor () is taken from cooling gas at an outlet of a motor cavity of the second-stage compressor (); and motor housings of the first-stage compressor () and the second-stage compressor () are provided with cooling water loops. The first-stage compressor (), the second-stage compressor (), and an expander () are separately provided with an impeller back sealing structure and a shaft sealing structure; and a part of the working medium at an outlet of the second-stage compressor () is led into the expander () to serve as sealing gas.

Find Patent Forward Citations

Zhang, Yan. (2026). Magnetic levitation motor sealing-cooling apparatus for refrigeration system and method therefor (U.S. Patent No. 12706510). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12706510

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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