Compression roller, apparatus for manufacturing heat exchanger tube having the same and heat exchanger tube

Abstract

An apparatus for manufacturing a heat exchanger tube includes an extruding means for extruding an aluminum preform in the shape of a tube; and a pair of compression rollers, each provided above and below the aluminum tube for compressing a central portion of the aluminum tube in the lengthwise direction of the aluminum tube, and having a disc-like shape. The present invention can process a heat exchanger tube without changing the shape of a die of the extruding means. As a result, excessive stress that may be applied to the die is prevented, and a heat exchanger tube is manufactured safely. And, an integrated two parallel-row tube with a connection portion according to the present invention provides simple assembly of a heat exchanger and a larger heat radiation area to increase a heat radiation efficiency.

Dependencies are inferred from the claim text.