Heat exchanger assembly for a compressor

A heat exchanger assembly for a compressor comprising:

• an elongated shell having first and second flanged ends, a fluid inlet and fluid outlet providing passage of a first fluid into and out of said shell;
• a fixed tube sheet assembly positioned adjacent the first flanged end of said shell, said fixed tube sheet assembly having a fixed inner tube sheet member sealingly affixed to the first flanged end to close in the first end of the shell space and a fixed outer tube sheet member spaced from the fixed inner tube sheet member, the fixed inner and outer tube sheet members being separated by a plurality of spacers to create a substantially open first space therebetween in communication with the exterior of said heat exchanger assembly;
• a floating tube sheet assembly positioned adjacent the second flanged end of said shell, said floating tube sheet assembly having a floating inner tube sheet member sealingly abutting the second flanged end to close in that end of the shell space and a floating outer tube sheet member spaced from the floating inner tube sheet member, the floating inner and outer tube sheet members being separated by a plurality of spacers to create a substantially open second space therebetween in communication with the exterior of said heat exchanger assembly, the floating tube sheet assembly being allowed limited longitudinal movement with respect to the second flanged end of said shell without breaking the sealed abutment between the floating inner tube sheet member and said second flanged shell end;
• an elongated tube bundle assembly received within said shell, said bundle assembly having a plurality of elongated tubes extending generally longitudinally within said bundle assembly and being received through both of the inner and outer tube sheet members of the fixed and floating tube sheet assemblies, each of said tubes being securely affixed within the inner and outer tube sheet members of the fixed and floating tube sheet assemblies, respectively, to provide a press-fit sealed connection therebetween;
• a header assembly being affixed to each of the fixed and floating outer tube sheet members for providing passage of a second fluid to be communicated through the elongated tubes extending through said shell whereby if the first fluid leaks by the sealed connections between the tubes and inner tube sheet members or the second fluid leaks by the sealed connections between the tubes and outer tube sheet members, the escaping first or second fluids will pass into the first and second open spaces between the fixed and floating tube sheet asemblies, respectively, to be vented exteriorly of said heat exchanger assembly without intermixing the first and second fluids within the heat exchanger assembly;
• and
• a resilient retaining means positioned adjacent the floating header asembly for biasing the floating header assembly and floating tube sheet assembly towards the interior of said shell to counteract opposing internal shell pressure forces acting on the inside of the inner floating tube sheet member.