Dual mode heat exchanger assembly

(19)

(11)

EP 1 895 255 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	26.11.2008 Bulletin 2008/48

(43)	Date of publication A2:
	05.03.2008 Bulletin 2008/10

(21)	Application number: 07075538.4

(22)	Date of filing: 29.06.2007

(51)

International Patent Classification (IPC):

F28D 1/04^(2006.01)
F28D 1/053^(2006.01)

F28F 27/02^(2006.01)
F28F 9/02^(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:

25.07.2006 US 492476

(71)	Applicant: Delphi Technologies, Inc.
	Troy, Michigan 48007 (US)

(72)	Inventors:
	Beamer, Henry E. Middleport, NY 14105 (US) Runk, Robert M. Lockport, NY 14094 (US)

(74)	Representative: Robert, Vincent et al
	Delphi European Headquarters 64, Avenue de la Plaine de France Paris Nord II BP 65059 Tremblay-en-France 95972 Roissy Charles de Gaulle Cedex 95972 Roissy Charles de Gaulle Cedex (FR)

(54)	Dual mode heat exchanger assembly

(57) A dual mode heat exchanger (20) has a first and second manifold (22, 24) with a plurality of flow tubes (28) fluidly connecting the manifolds (22, 24) for passing refrigerant between the manifolds (22, 24). The first manifold (22) is divided into at least two chambers (40, 42). The second manifold (24) defines a single cavity (27) but can form more than one chamber. Separators divide the cavities (26, 27) and are offset from each other creating groups of flow tubes (28) that connect one chamber in each manifold. At least one port (28) in each chamber of one of the manifolds (22, 24) is in the open position for controlling refrigerant circulation. All of the ports (30) are opened in one of the manifolds (22, 24) to permit refrigerant to pass through all of the plurality of tubes (28) in at least one pass in evaporator mode (34). At least one of the ports (30) is closed to permit refrigerant to pass through all of the plurality of flow tubes (28) in at least two passes in condenser mode (36).

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