FLOW DEFLECTOR

摘要

The present invention relates to a device for deflecting coolant fluid flow in a heat exchanger, particularly a heat exchanger of an EGR (Exhaust Gas Recirculation) system, better cooling of the fluid to be cooled and flowing through the bundle of tubes of said heat exchanger being obtained.

主权项

1. A flow deflector adapted for being installed in heat exchangers of the type comprising a shell with an inner chamber through which a first coolant fluid circulates and where said shell houses at least a bundle of tubes through which a second fluid to be cooled circulates, where between the bundle of tubes and the wall of the inner chamber of the shell there is a perimetral gap in at least one section of the length of the bundle of tubes, where said deflector comprises:
a tubular body adapted for surrounding at least one section of the length of the bundle of tubes, a first expansion section arranged at one end of the tubular body such that the tubular body is extended longitudinally by means of the first expansion section where: the first expansion section covers a larger perimeter than the perimeter covered by the tubular body to reduce the perimetral gap between the bundle of tubes and the wall of the inner chamber of the shell; and, between the first expansion section and the tubular body there is a transition such that a first coolant fluid flow passage restriction is established for restricting it to the space between the tubes of the bundle of tubes.