(19)
(11) EP 1 677 058 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.01.2012 Bulletin 2012/02

(43) Date of publication A2:
05.07.2006 Bulletin 2006/27

(21) Application number: 05028036.1

(22) Date of filing: 21.12.2005
(51) International Patent Classification (IPC): 
F25B 49/02(2006.01)
 F24F 11/00(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 28.12.2004 KR 2004113566

(71) Applicant: LG Electronics, Inc.
Seoul 150-010 (KR)

(72) Inventors:
  • Lee, Won Hee
    Seodaemun-ku Seoul 120-080 (KR)
  • Hyun, Seung Youp
    Guro-ku Seoul 152-056 (KR)
  • Sim, Jae Hoon
    Seoul 152-082 (KR)
  • Hwang, Yoon Jei
    Seoul 140-031 (KR)

(74) Representative: Vossius & Partner 
Siebertstrasse 4
81675 München
81675 München (DE)

   


(54) Method of controlling over-load cooling operation of air conditioner


(57) A method of controlling an over-load cooling operation of an air conditioner includes over-load operation mode in which, when an outdoor pipe temperature and an outdoor temperature exceeds reference temperatures, respectively, the operation capacity is changed to a low-level operation capacity, which is lower than the current operation capacity, the low-level operation capacity being one of plural operation capacities set according to the operation capacities of compressors (51, 52), and the operation is performed, and normal operation mode in which the outdoor pipe temperature is measured every predetermined period of time after the operation is performed in the over-load operation mode, and, when the measured outdoor pipe temperature is below the reference temperature, the operation is performed according to a signal from a thermostat (70). The continuous cooling operation is possible even under the over-load condition during the cooling operation of the air conditioner, and the air conditioner system is protected through the variable-capacity operation. Consequently, the present invention has the effect of improving user comfort and improving operational reliability of the air conditioner.







Search report