(19)
(11) EP 1 921 400 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.06.2015 Bulletin 2015/23

(43) Date of publication A2:
14.05.2008 Bulletin 2008/20

(21) Application number: 07252278.2

(22) Date of filing: 06.06.2007
(51) International Patent Classification (IPC): 
F25B 13/00(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 MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 19.10.2006 KR 20060101754

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

(72) Inventor:
  • Kim, Ju Sang
    Buk-ku Busan-si 616-130 (KR)

(74) Representative: Boult Wade Tennant 
Verulam Gardens 70 Gray's Inn Road
London WC1X 8BT
London WC1X 8BT (GB)

   


(54) Simultaneous cooling-heating multiple type air conditioner


(57) A simultaneous cooling-heating multiple type air conditioner includes a plurality of cooling-heating combined-use indoor units controlled in an operation domain divided into a plurality of operation zones based on a refrigerant suction pressure and a refrigerant discharge pressure of a compressor. The operation domain includes three operation zones. In the first operation zone, a cooling-initiative simultaneous cooling and heating operation mode is switched to a heating-initiative simultaneous cooling and heating operation mode. In the second operation zone, the cooling-initiative simultaneous cooling and heating operation mode or the heating-initiative simultaneous cooling and heating operation mode, does not switch to different modes. In the third operation zone, the heating-initiative simultaneous cooling and heating operation mode is switched to the cooling-initiative simultaneous cooling and heating operation mode.







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