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. 29, 2005
Filed:
Mar. 04, 2003
Min Ho SO, Seoul-si, KR;
Won Hee Lee, Seoul-si, KR;
Chang Min Choi, Seoul, KR;
Yoon Jei Hwang, Seoul, KR;
Deok Huh, Buchun-si, KR;
Cheol Min Kim, Kwangmyung-si, KR;
Min Ho So, Seoul-si, KR;
Won Hee Lee, Seoul-si, KR;
Chang Min Choi, Seoul, KR;
Yoon Jei Hwang, Seoul, KR;
Deok Huh, Buchun-si, KR;
Cheol Min Kim, Kwangmyung-si, KR;
LG Electronics Inc., Seoul, KR;
Abstract
Disclosed are compressor-controlling device and method for an air conditioner comprising a plurality of compressors. In case several compressors selected from the plural compressors are stopped for a long period of time according to cooling or heating load, the refrigerant contained in a higher-pressure state inside of the stopped compressors moves toward a refrigerant pipe of a lower-pressure inlet port, and oil used to operate the compressors leaks toward the inlet port, thus lowering the oil level within the stopped compressors. Since the stopped compressors are operated during a second designated time when stopped time of the stopped compressors exceeds a first designated time, the stopped compressors are protected from damage due to poor lubrication.