Heat exchange – With agitating or stirring structure
Patent
1988-02-18
1989-04-25
Scott, Samuel
Heat exchange
With agitating or stirring structure
138 38, F28F 140, F28F 1312
Patent
active
048238651
ABSTRACT:
A turbulator construction for a heat exchanger. The turbulator is fabricated from a single sheet of flat metal which is bent in the form of a double helix. When disposed in a heat exchanger tube, the turbulator defines a pair of helical passages. The upstream end of the turbulator is flat and extends diametrically across the tube to divide the tube into a pair of inlet passages of substantially equal area. Each inlet passage communicates with one of the helical passages. In one form of the invention, the turbulator is formed from an elongated rectangular sheet of metal and in the bent condition, the peripheral edges of the helix are spaced from the tube to provide gaps therebetween. In a second form of the invention, the helix is formed from an elongated sheet with the side edges formed of a series of interconnected convex edge portions. In the bent condition, the curved edge portions conform to the inner surface of the tube, so that there is no appreciable gap between the helix and the tube.
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patent: 4577681 (1986-03-01), Hughes
A. O. Smith Corporation
Flanigan Allen J.
Scott Samuel
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