Flat heat exchange tube, heat exchanger, and construction machine

Abstract

The present invention relates to a flat heat exchange tube. The flat heat exchange tube comprises: planar wall portions extending in length and width directions of the heat exchange tube and spaced apart from each other in a thickness direction of the heat exchange tube, and side wall portions extending in length and thickness directions of the heat exchange tube across side edges of the planar wall portions, wherein at least one planar wall portion of the flat heat exchange tube is provided, in an area adjacent to its mounting position, with a stress relieving portion for relieving stress of a tube wall, the stress relieving portion comprising one or more elongated corrugated sections formed by local arching or recessing of the planar wall portion, and a longitudinal direction of the corrugated section being substantially identical with the width direction of the heat exchange tube. The present invention also relates to a heat exchanger comprising said flat heat exchange tube and a construction machine comprising said heat exchanger.

Dependencies are inferred from the claim text.