Heat exchanger with a fluid flow tube and protection against micrometeorites
AssigneeLiebherr-Aerospace Toulouse SAS
InventorsJulien Robert, Stéphane Meunier, Arnaud Ramousse
Life of this patent
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Abstract
A heat exchanger includes a fluid flow tube configured to allow an exchange of heat between the fluid flowing in the tube and an enclosure surrounding the tube. The enclosure is formed from two profiled bars configured to surround the tube over at least one part of its length. Each of the bars includes a recess adapted to receive the tube, and a joint surface configured to form a joint with the other profiled bar. The joint surfaces of the profiled bars form a gap therebetween. As well, the joint surfaces of the profiled bars are arranged in different planes such that the gap forms at least one baffle on each side of the tube.
Claims11
A heat exchanger comprising a fluid flow tube configured to allow an exchange of heat between the fluid flowing in the tube and an enclosure surrounding the tube, wherein the enclosure is formed of two profiled bars configured to surround the tube over at least one part of its length, each of the bars comprising:
- a recess adapted to receive the tube, the inner surface of the recess being a portion of a cylinder,
- a joint surface distributed on either side of the recess and configured to form a joint with an other one of the bars following soldering of the profiled bars,
- wherein the joint surfaces of the profiled bars are complementary in shape so as to form a gap therebetween, at least one soldering element being arranged in at least one part of said gap, and the joint surfaces of the profiled bars are arranged in different planes such that said gap forms at least one baffle on each side of the tube.
A method of manufacturing a heat exchanger comprising:
- placing at least one soldering strip on at least one part of a joint surface of at least one profiled bar amongst two profiled bars defining an enclosure of a fluid flow tube of a heat exchanger, each of the bars comprising a recess adapted to receive the tube, the inner surface of the recess being a portion of a cylinder, and a joint surface distributed on either side of the recess,
- inserting the fluid flow tube in the recess of one of the profiled bars,
- joining the two profiled bars around the tube,
- hard soldering the heat exchanger in a soldering furnace at a temperature greater than 450° C., such that each soldering strip produced by the hard soldering forms a permanent assembly between the profiled bars and the fluid flow tube, so that each joint surface is configured to form a joint with an other one of the bars following soldering of the profiled bars, the joint surfaces of the profiled bars being complementary in shape so as to form a gap therebetween and being arranged in different planes such that said gap forms at least one baffle on each side of the tube.
Dependencies are inferred from the claim text.