Scroll compressor with bypass ports driven by a line fed permanent magnet sychronous type motor.

(19)

(11)

EP 2 149 708 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	29.06.2011 Bulletin 2011/26

(43)	Date of publication A2:
	03.02.2010 Bulletin 2010/05

(21)	Application number: 09251430.6

(22)	Date of filing: 28.05.2009

(51)

International Patent Classification (IPC):

F04C 18/02^(2006.01)

F04C 29/00^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA RS

(30)

Priority:

31.07.2008 US 183149

(71)	Applicant: Scroll Technologies
	Arkadelphia, AR 71923 (US)

(72)	Inventor:
	Hahn, Gergory W. Arkadelphia Arkansas 71923 (US)

(74)	Representative: Shanks, Andrew et al
	Marks & Clerk LLP Aurora 120 Bothwell Street Glasgow G2 7JS Glasgow G2 7JS (GB)

(54)	Scroll compressor with bypass ports driven by a line fed permanent magnet sychronous type motor.

(57) A scroll compressor is provided with some capacity reduction technique such as a bypass port. The electric motor for driving the scroll compressor is not an induction motor, but rather a line fed permanent magnet synchronous motor is utilized. Such motors have a higher overall efficiency, and thus will be more efficient at reduced capacity operation.

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