Patent ID: 9080815
Filing Date: 2015-07-14
Classification: F28D,F28F

Abstract:
1. Conversion set for a tube bundle heat exchanger having a cylindrical housing, which housing has an inner diameter and is configured to receive therein a tube bundle unit, the conversion set comprising at least one plate heat exchanger unit for replacing such tube bundle unit, the plate heat exchanger unit having an outer diameter configured to fit within the inner diameter of the cylindrical housing and comprising at least the following components: (a) a plate packet having at least two heat exchanger plates, each comprising at least one through hole and welded to each other in pairs along the periphery thereof or along the periphery of the through holes, (b) a cage comprised of two essentially circular mounting plates joined to at least one tension means flow director which extends in the longitudinal direction between the two mounting plates, the tension means flow director comprising a single structure which is configured to extend at least partially around the periphery of the plate packet and serves both to secure the two mounting plates to each other and to prevent bypass flow of a heat exchange medium past the plate packet, wherein an inner side of the at least one tension means flow director is located on the external diameter of the plate packet and an outer side of the at least one tension means flow director terminates along the outer diameter of the mounting plates, the two mounting plates each having at least one through hole and a recess in the shape of a ring segment at its edge for diverting the flow of a heat transfer medium flowing through the housing of the tube bundle heat exchanger, wherein the recess extends over an angle of approx. 90°, and wherein in each case one of the mounting plates is arranged at each end of the plate packet and is connected to each outermost heat exchanger plate of the plate packet, wherein the at least one tension means flow director is located on either side of the recess, and wherein the cage is disposed about the plate packet and is by itself capable of absorbing the forces arising in the plate packet in the operating state of the plate heat exchanger unit to thereby preclude such forces from forcing apart the heat exchanger plates.