HEAT EXCHANGER WITH INTEGRATED CO-AXIAL INLET/OUTLET TUBE

摘要

A multi-pass heat exchanger is provided wherein the heat exchanger is comprised of a plurality of stacked heat exchange plates defining a plurality of alternating first and second fluid channels interconnecting respective pairs of manifolds. At least one of the manifolds in the pairs of manifolds is in the form of an annular manifold structure which divides the heat exchanger into at least a first part and a second part thereby forming at least a two-pass flow path. The annular manifold structure is provided by a generally tubular manifold insert having one end embedded within the manifold. A first annular manifold flow passage communicates with one of the sets of fluid channels in the first part of the heat exchanger and a second, central manifold flow passage communicates with the corresponding set of fluid channels in the second part of the heat exchanger.

主权项

1. A heat exchanger, comprising:
a plurality of stacked heat exchanger plates defining a plurality of alternating first and second fluid channels therebetween forming a heat exchanger core; a pair of first fluid manifolds interconnected by the plurality of first fluid channels for inletting and discharging a first heat exchange fluid to and from the heat exchanger; a pair of second fluid manifolds interconnected by the plurality of second fluid channels for inletting and discharging a second heat exchanger fluid to and from the heat exchanger; wherein one of said manifolds of said pair of either first or second fluid manifolds is an annular manifold structure having:
an annular first manifold fluid passage extending through a portion of the one of said manifolds in fluid communication with a first set of said first or second fluid passages; anda second manifold fluid passage extending centrally through said annular first manifold fluid passage and fluidly isolated therefrom, the second manifold fluid passage being in fluid communication with a second set of said first or second fluid passages; the annular manifold structure therefore inletting and discharging the same heat exchange fluid to and from the heat exchanger core in a co-axial manner.