Flat tube and production method
AssigneeModine Manufacturing Company
InventorIngo Daut
Life of this patent
Estimating the term…
Abstract
A flat tube for use with a heat exchanger. The flat tube including wide sides, narrow sides, an inner insert, a wall that at least partially forms the wide sides and the narrow sides, and the wall is configured to be produced from a punched-out blank. The flat tube further includes an introduction bevel in order to facilitate introduction of the inner insert. The introduction bevel includes at least two bent-down projections at an end of the flat tube. The at least two projections extend over portions of at least one of the wide sides and the narrow sides, and it being possible for the at least two projections to be separated off after the introduction of the inner insert.
Claims13
-11. (canceled)
A flat tube for use with a heat exchanger, the flat tube comprising:
- a wide side;
- a narrow side;
- an inner insert;
- a wall that at least partially forms the wide side and the narrow side, the wall configured to be produced from a punched-out blank;
- and
- an introduction bevel in order to facilitate introduction of the inner insert, the introduction bevel including at least two bent-down projections at an end of the flat tube, the at least two projections extending over portions of at least one of the wide side and the narrow side, it being possible for the at least two projections to be separated off after the introduction of the inner insert.
A method for producing a flat tube with an inner insert for use in a heat exchanger, the method comprising:
- producing a blank from a sheet metal strip, the blank forming a wall of the flat tube;
- generating at least two projections in the blank;
- reshaping the blank into the flat tube having narrow sides, wide sides, and connected in a seam;
- bending the at least two projections down and outward so that introduction bevels are provided for inserting the inner insert into the flat tube;
- and
- separating off the at least two projections after inserting the inner insert.
A sheet metal reshaping installation for producing flat tubes for heat exchangers from an endless sheet metal strip, into which inner inserts can later be inserted, the sheet metal reshaping installation comprising:
- a punching tool configured to produce a wall of the flat tube as a blank with at least two projections;
- a tool configured to produce the shape of the flat tube from the blank;
- and
- a device that is used to bend down the at least two projections arranged at at least one flat tube end.
Dependencies are inferred from the claim text.