Efficient ventilating device comprising a centrifugal fan

(19)

(11)

EP 2 080 911 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	14.12.2011 Bulletin 2011/50

(43)	Date of publication A2:
	22.07.2009 Bulletin 2009/30

(21)	Application number: 09000411.0

(22)	Date of filing: 14.01.2009

(51)

International Patent Classification (IPC):

F04D 29/42^(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:

18.01.2008 NL 1034927

(71)	Applicant: Holland Conditioning Parkeersystemen B.V.
	5141 MT Waalwick (NL)

(72)	Inventor:
	Speulman, Johannes Antonius Maria 2665 DP Bleiswijk (NL)

(74)	Representative: Baeten, Ernest
	Algemeen Octrooi- en Merkenbureau P.O. Box 645 5600 AP Eindhoven 5600 AP Eindhoven (NL)

(54)	Efficient ventilating device comprising a centrifugal fan

(57) The present invention relates to a ventilating device comprising a centrifugal fan having a radius and a width, measured in the direction parallel to the axis of rotation of the centrifugal fan, and a housing having an at least substantially rectangular upper and lower wall extending at least substantially perpendicular to the axis of rotation on either side of the centrifugal fan and two side walls extending between said upper wall and said lower wall, and at the front side at least one outlet opening for an air flow to be generated by the centrifugal fan, which is at least substantially symmetrical relative to the perpendicular projection of the axis of rotation on the front side of the housing, wherein the side walls extend at least partially in an outwardly curved line between the upper wall and the lower wall.

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