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:
May. 20, 2025
Filed:
Feb. 10, 2021
Applicant:
Lg Electronics Inc., Seoul, KR;
Inventors:
Assignee:
LG ELECTRONICS INC., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16C 17/24 (2006.01); F04D 27/00 (2006.01); F04D 29/051 (2006.01); F04D 29/056 (2006.01);
U.S. Cl.
CPC ...
F16C 17/246 (2013.01); F04D 27/001 (2013.01); F04D 27/004 (2013.01); F04D 27/008 (2013.01); F04D 27/009 (2013.01); F04D 29/051 (2013.01); F04D 29/056 (2013.01); F05D 2240/50 (2013.01); F05D 2270/30 (2013.01); F16C 2233/00 (2013.01);
Abstract
A compressor including one or more impellers configured to draw in a refrigerant in an axial direction and to compress the refrigerant in a centrifugal direction; a rotary shaft, to which the one or more impellers and a motor that rotates the one or more impellers are coupled; a thrust bearing that supports the rotary shaft; a bearing state sensor configured to detect a surface roughness of the thrust bearing; and a controller configured to control the motor based on the surface roughness of the thrust bearing.