×

Heat exchangers

  • US 9,874,408 B2
  • Filed: 12/02/2013
  • Issued: 01/23/2018
  • Est. Priority Date: 11/30/2012
  • Status: Active Grant
First Claim
Patent Images

1. Heat exchanger apparatus (100) comprisingone or more substantially flat and rigid elongated finned tubing elements (10, 10

  • ) having a first side wall (40) and a second side wall (50) being arranged substantially parallel to each other, whereby the one or more finned tubing elements (10, 10

    ) form a substantially overall cylindrical structure having a central longitudinal axis (X) and that the one or more finned tubing elements (10, 10

    ) are curved around the central longitudinal axis (X),whereby the one or more finned tubing elements (10, 10

    ) have a plurality of fins (60, 60

    ) on at least one of outer surfaces (42, 52) of a first side wall (40) and/or of a second side wall (50) and whereby the fins (60, 60

    ) are angled and not perpendicular with respect to lengths of the one or more finned tubing elements (10, 10

    ) to direct flow across the sidewalls (40, 50), connection walls (45, 55) on both sides between the first side wall (40) and the second side wall (50),wherein the fins (60, 60

    ) are angled with respect to the finned tubing element by two defining angles (γ

    , δ

    ), wherein one angle (γ

    ) of the two defining angles is an angle of the fins (60, 60

    ) with respect to the connection walls (45, 55) of the finned tubing element, wherein another angle (δ

    ) of the two defining angles is an angle of the fins (60,60

    ) with respect to the outer surfaces (42, 52) of the first side wall (40) or the second side wall (50),wherein the fins are covered by a covering wall (70, 80), whereby the one or more finned tubing elements (10, 10

    ) are at least partially tilted, sloped, and helically wound and twisted so as to form at least a part of a helical structure, whereby the helical structure has an overall cylindrical structure and that the helical structure is formed in a cylindrical shape, wherein each of the fins is twisted between opposite endpoints of each fin and curved by an offset of a center part of a middle section of each fin with respect to the endpoints of each fin.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×