Multi-unit air conditioner and method for controlling the same

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(11)

EP 1 643 195 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	07.06.2006 Bulletin 2006/23

(43)	Date of publication A2:
	05.04.2006 Bulletin 2006/14

(21)	Application number: 05103533.5

(22)	Date of filing: 28.04.2005

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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 MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR LV MK YU

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Priority:

02.10.2004 KR 2004078564

(71)	Applicant: SAMSUNG ELECTRONICS CO., LTD.
	Suwon-si, Gyeonggi-Do 442-742 (KR)

(72)	Inventors:
	Jung, Gyoo Ha Suwon-Si, Gyeonggi-do (KR) Park, Moon Soo Anyang-Si, Gyeonggi-Do (KR) Song, Myung Seob Gyeonggi-Do (KR) Kim, Woo Hyun Seoul (KR)

(74)	Representative: Geary, Stuart Lloyd et al
	Venner Shipley LLP 20 Little Britain London EC1A 7DH London EC1A 7DH (GB)

(54)	Multi-unit air conditioner and method for controlling the same

(57) Disclosed herein is a simultaneous cooling and heating operation controlling method of a multi air conditioner system comprising a plurality of indoor units connected in parallel to an outdoor unit. The simultaneous cooling and heating operation controlling method comprises differently setting a cooling and heating reference range to decide main operation mode of the multi air conditioner system based on outdoor temperature, measuring the outdoor temperature to select the cooling and heating reference range based on the outdoor temperature, summing capacities of the indoor units where a cooling or heating operation is set to calculate cooling and heating ratio, and identifying part of the cooling and heating reference range corresponding to the cooling and heating ratio to decide the main operation mode of the multi air conditioner system.

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