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:
Nov. 07, 2006
Filed:
Jun. 30, 2004
IL Kwon OH, Seoul, KR;
Min Sub Shim, Gunpo-si, KR;
Jin Seob Song, Gunpo-si, KR;
SE Dong Chang, Gwangmyeong-si, KR;
Bong Soo Park, Dongjak-gu, KR;
DO Yong Ha, Gwangmyeong-si, KR;
Seung Yong Chang, Yangcheon-gu, KR;
Il Kwon Oh, Seoul, KR;
Min Sub Shim, Gunpo-si, KR;
Jin Seob Song, Gunpo-si, KR;
Se Dong Chang, Gwangmyeong-si, KR;
Bong Soo Park, Dongjak-gu, KR;
Do Yong Ha, Gwangmyeong-si, KR;
Seung Yong Chang, Yangcheon-gu, KR;
LG Electronics Inc., Seoul, KR;
Abstract
Method for controlling a multi-type air conditioner having a plurality of indoor units each with an expansion valve, an indoor heat exchanger, and an indoor fan, some of which heat rooms, and rest of which are turned off, including the steps of (S) defining a saturation temperature of refrigerant by using a heating cycle of the refrigerant, and Mollier chart, (S) measuring a temperature of the refrigerant stagnant at the turned off indoor units, (S) determining if a temperature difference of the refrigerant temperature and the saturation temperature is within a temperature range preset at a control part, (S) opening the expansion valves of the turned off indoor units, if the temperature difference is within the temperature range preset at the control part, and (S) closing the expansion valve of the turned off indoor units, if the temperature difference is not within the temperature range preset at the control part, whereby minimizing stagnation of refrigerant at turned off indoor units during some of the indoor units are in operation for heating rooms, and reduce noise occurred when the stagnant refrigerant is removed.