Heat exchanger

摘要

A heat exchanger comprising substantially square (rectangle) conduits featuring a screw like turbulator designed for square conduits. The tubes are designed for reclaiming heat from waste fluids. The tubes are substantially parallel to the flow direction of the waste fluid, thus resulting in a simple and cost effective construction.

主权项

1. A heat exchanger comprising:
a first elongated conduit in fluid communication with a first inlet at one end thereof and with a first outlet at an opposed end thereof, the first conduit including a bottom wall; and a plurality of second elongated conduits extending along and parallel to the first conduit, each of the second conduits having a square cross-section, each of the second conduits having a conduit inlet directly connected with a second inlet at one end thereof, and having a conduit outlet directly connected with a second outlet at an opposed end of said second conduit, each of the second conduits including a top wall having a shape complementary to that of the bottom wall of the first conduit, each of the second conduits being retained against the first conduit with the top wall of the second conduits adjacent to the bottom wall of the first conduit and disposed in heat exchange relationship therewith, each of the second conduits having a turbulator therein defining at least two alternating flow paths having a length greater than that of the second conduit, the turbulator having a core extending along a longitudinal direction of the second conduit and a plurality of side wall pairings, the side walls in each side wall pairing being longitudinally offset and extending in opposite directions from the core transversely and perpendicularly to the longitudinal direction, the side wall pairings being in contact with a corresponding one of inner wall surfaces of the second conduit, adjacent side wall pairings being spaced apart along the longitudinal direction and defining a chamber therebetween, the turbulator having a plurality of in-line walls, each of the in-line walls extending longitudinally between the side walls of a corresponding side wall pairing, the in-line walls extending from the core along the longitudinal direction and being transverse to the side walls, the in-line walls being in contact with a corresponding one of the inner wall surfaces of the second conduit, for each of the at least two distinct flow paths, adjacent chambers being in fluid communication with one another through gaps defined in each of the side-wall pairings.