Heat exchanger for EGR-gas
AssigneeVolvo Lastvagnar AB
InventorHans-Gunnar Qvist
Life of this patent
Estimating the term…
Abstract
A heat exchanger for a first and a second medium flow includes flat tubes which have internal fins formed from zigzag-shaped sheet metal plate. The tubes have a thermally conductive connection to at least one duct for the one medium flow. Each fin is fixed only to the one longitudinal side of each tube. Furthermore, there is a gap between the fins fixed to the one longitudinal side and the opposite longitudinal side of the tube.
Claims10
A heat exchanger for a first and a second medium flow, comprising flat tubes which have internal fins formed from zigzag-shaped sheet metal plate, the tubes having a thermally conductive connection to at least one duct for the first medium flow, wherein each fin is fixed only to one longitudinal side of each tube, and wherein there is a gap between the fins fixed to the one longitudinal side and an opposite longitudinal side of the tube, and at least one of the tubes is provided with fins on both of the longitudinal sides, wherein, in the at least one of the tubes, a first plate forms fins on and is fixed to only a first longitudinal side of the at least one of the tubes, and a second plate forms fins on and is fixed to only a second longitudinal side of the at least one of the tubes.
Dependencies are inferred from the claim text.