Multi-tube heat exchanger
AssigneeSanden Corporation
InventorTomonari Morita
Life of this patent
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Abstract
A multi-tube heat exchanger includes a pair of tanks and a plurality of heat transfer tubes fluidly interconnected between the tanks, wherein each heat transfer tube has an engaging portion only at a first end portion engaging a wall of a first tank of the pair of tanks and a relatively movable portion at a second end portion capable of moving in an axial direction of the tube relative to a wall of the second tank. Such a structure helps ensure proper tube positioning and spacing while bowing or deformation of the heat transfer tubes is appropriately prevented at the time of heating and brazing.
Claims7
A multi-tube heat exchanger assembled by brazing, comprising:
- a pair of tanks spaced from each other;
- a plurality of heat transfer tubes, fluidly interconnected between said pair of tanks, each of said plurality of heat transfer tubes having a first end portion and a second end portion and defining a longitudinal axis;
- said first end portion comprising an engaging portion operative to engage said first end portion with a first tank of said pair of tanks at a fixed insertion depth;
- said second end portion configured to permit relative motion in either direction along said longitudinal axis between said second end portion and a second tank of said pair of tanks when there is no solidification of any braze compound present between said second end portion and a wall of the second tank of said pair of tanks and when said pair of tanks are maintained in a fixed spatial relationship.
Dependencies are inferred from the claim text.