Importance

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Abstract

A heat exchanger (4) for cooling a machine, such as a mechanical gear or some other transmission component, hydraulic pump, motor or clutch, compressor, internal combustion engine or like machine, which comprises a housing (1) in which movable, mechanical elements (2), which are driven when the machine is working, are housed, and which encloses a liquid medium (3), such as a lubricating or hydraulic liquid. The heat exchanger is mounted in the outer wall (5) of the housing and comprises two chambers (6, 7) which are mutually separated by a liquid-impervous partition wall (8) which comprises part of the housing wall. The inwardly located chamber (7) is through-passed by the liquid medium (3) enclosed in the housing, while the outwardly located chamber (6) is through-passed by a cooling medium. The heat exchanger (4) is so positioned that a pressure difference is created between the inlet (13) and the outlet (16) of the inwardly located chamber (7) under the influence of movement of the movable mechanical elements (2) therewith obviating the need of a separate pump for driving the medium (3) to be cooled through the heat exchanger.

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First Claim