Heat exchange device
AssigneeBorgwarner Emissions Systems Spain, S.L.U.
InventorsJosé Antonio Grande Fernández, Germán Troncoso
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Abstract
A heat exchange device of a floating core type, having a special configuration which allows increasing its durability as it increases its thermal fatigue resistance. The device is characterized by a configuration having high thermal fatigue resistance due to the special configuration of the end where the floating side of the core is located since stagnation regions that are usually produced in the baffle of the floating end are eliminated by the combination of the shape of the shell and of a deflector. This configuration furthermore results in a low-cost exchanger.
Claims16
A heat exchange device adapted for cooling a hot gas by a coolant liquid, comprising:
- a bundle of heat exchange tubes extending in a longitudinal direction of the device between a first fixed baffle and a second floating baffle for passage of the hot gas to be cooled;
- and
- a shell housing the bundle such that a space between the shell and the bundle allows passage of the coolant liquid, where:
- the shell is closed at one end by the first fixed baffle and comprises at an opposite end a chamber formed by an extension of a shell segment having a larger section closed with a third baffle;
- and
- a first coolant liquid inlet/outlet is located at a point of the shell on a side of the first baffle and a second coolant liquid inlet/outlet is established in the shell segment having a larger section,
- wherein the second floating baffle has a manifold in a first fluid connection with inlets of the heat exchange tubes, and the manifold is in a second fluid connection with an inlet for the hot gas arranged in the third baffle, where the second fluid connection is by a conduit that is elastically deformable in at least the longitudinal direction;
- wherein an assembly of the second floating baffle and the manifold is housed in the chamber formed by the extension of the shell segment and is separated from the shell segment along a perimeter of the assembly to allow passage of the coolant liquid;
- and the second coolant liquid inlet/outlet is located longitudinally between the assembly and the third baffle,
- and wherein, in a perimetral separation space between the assembly and the shell segment having a larger section, there is a deflector closing the separation space along at least a portion of the separation space, and
- wherein the deflector comprises a perimetral band, which is supported on a surface of the second floating baffle.
Dependencies are inferred from the claim text.