Patent ID: 9683785
Date: 2017-06-20
CPC Classifications: F28D,F28F

Claim:
1. A heat exchanger comprising: a housing; a fluid flow conduit located within a cavity formed in the housing, the fluid flow conduit including an outer tube located adjacent to an inner wall of the housing and an inner tube in fluid communication with the outer tube, the inner tube being located between the outer tube and a longitudinal axis of the housing, the outer tube defines a first helix extending generally co-axially with the longitudinal axis and the inner tube defines a second helix extending generally co-axially with the longitudinal axis; an inlet port located on the housing, the inlet port being in fluid communication with the cavity; an outlet port located on the housing, the outlet port being in fluid communication with the cavity; and a flow guide located between the inner tube and the longitudinal axis of the housing, the flow guide being adapted to agitate water flowing between the inlet port and the outlet port, wherein the housing includes a first section and a second section that are selectively detachable relative to each other, wherein the flow guide includes two stems which are located at opposing ends of the flow guide, each stem including a first engagement formation for engaging with a corresponding second engagement formation formed in the housing, and wherein the first and second engagement formations are corresponding male and female spline connections.