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US 2007/0163767 A1Published application
Brazed plate fin heat exchanger
OwnerPaul L. Mitchell, Michael E. Heidenreich +4inventors
InventorsPaul L. Mitchell, Michael E. Heidenreich, Roger A. Loomis, James R. Harris, David L. Davis, David E. Lollar
Life of this patent
Estimating the term…
Abstract
A fin collar having a shape that enhances flux application and brazing clad flow into the tube to fin joint to provide an improved thermal and structural bond.
Claims31
A heat exchanger, comprising:
- at least one plate fin having a first side, a second side, and at least one opening defined therein;
- at least one fin collar disposed on the plate fin around the at least one opening, the fin collar having an upstanding wall extending from the plate fin, the wall having a plurality of slits defined therein;
- and,
- at least one tube for conveying a pressurized fluid, the tube being disposed through the at least one opening in the plate fin.
1 more element
A heat exchanger, comprising:
- at least one plate fin having a first side, a second side and at least one opening defined therein;
- at least one fin collar disposed on the plate fin around the at least one opening, the fin collar having an upstanding wall extending from the plate fin, the wall having a plurality of slits defined therein;
- and,
- at least one tube for conveying a pressurized fluid, the tube being disposed through the opening in the plate fin and attached to the fin collar by brazing.
1 more element
A method of forming a plate fin heat exchanger, comprising:
- providing at least one plate fin having a first side, a second side, and at least one opening;
- at least one fin collar disposed on the plate fin around the at least one opening, the fin collar having an upstanding wall extending from the plate fin, the wall having a plurality of slits defined therein;
- and at least one tube for conveying a pressurized fluid, the tube being disposed through the at least one opening and attached to the fin collar by brazing;
- providing a cladding material for brazing the plate fin-to-tube joint;
- and,
- brazing the plate fin-to-tube joint in a controlled atmosphere brazing oven.
3 more elements
Dependencies are inferred from the claim text.