Patent ID: 7347253
Filing Date: 2008-03-25
Classification: F28D,F28F

Abstract:
1. A heat exchanger with a plate structure, comprising: a stack of plates inside which a first heat transfer medium is allowed to flow, the stack of plates including an end plate at each end of the stack, a housing unit inside which a second heat transfer medium is allowed to flow, the housing unit including ends supporting the stack of plates and a primarily cylindrical housing surrounding the stack of plates, wherein an end space is left between the end plate of the stack of plates and the end of the housing unit, inlet and outlet passages for the first heat transfer medium, penetrating through the end of the housing unit and extending from the outside of the housing to the inside of the stack of plates, inlet and outlet passages for the second heat transfer medium, extending from the outside of the housing unit to the inside of the housing unit, and at least one flow channel for the second heat transfer medium, arranged between the cylindrical housing and the stack of plates and arranged to convey the second heat transfer medium from the end space along at least a distance into the space between the housing and the stack of plates, wherein in at least one end of the heat exchanger, the end of the housing unit is arranged to be penetrated by an inlet and/or outlet passage for the second heat transfer medium, opening into the end space, a flow guide plate is provided in the end space, which flow guide plate has a recess into which the inlet and/or outlet passage for the heat transfer medium opens, which recess is formed to extend from the edge of the flow guide plate along a distance towards the centre of the guide plate, to guide the stream of the second heat transfer medium between said recess and the flow channel between the housing and the stack of plates, the end of the housing unit is arranged to be penetrated by an inlet and/or out-let passage for the first heat transfer medium, and the flow guide plate is provided with an opening to guide the first heat transfer medium through the guide plate.