Tubing element with fins for a heat exchanger

• US 9,733,024 B2
• Filed: 12/02/2013
• Issued: 08/15/2017
• Est. Priority Date: 11/30/2012
• Status: Active Grant

• Current Assignee: Carlos Quesada Saborio
• Original Assignee: Carlos Quesada Saborio
• Inventors: Quesada Saborio, Carlos
• Primary Examiner(s): Leo, Leonard R
• Application Number:
  US14/094,230
• Publication Number:
  US 20140151007A1
• Time in Patent Office: 1,352 Days
• Field of Search: 165125, 165177, 165183, 1651091, 165181
• CPC Class Codes: B23P 15/26 heat exchangers or the like making heat exchangers by methods covered by other subclasses B21D53/02
• CPC Class Codes: F28D 1/0473 the conduits having a non-circular cross-section
• CPC Class Codes: F28F 1/006 with variable shape, e.g. with modified tube ends, with different geometrical features F28F1/025, F28F1/06, F28F1/08, F28F9/16, F28F9/18 take precedence
• CPC Class Codes: F28F 1/022 with multiple channels
• CPC Class Codes: F28F 1/025 with variable shape, e.g. with modified tube ends, with different geometrical features F28F1/06, F28F1/08, F28F9/16, F28F9/18 take precedence
• CPC Class Codes: F28F 1/12 the means being only outside the tubular element
• CPC Class Codes: F28F 1/26 the means being integral with the element F28F1/32 takes precedence
• CPC Class Codes: F28F 1/34 and extending obliquely F28F1/38 takes precedence
• CPC Class Codes: F28F 17/005 Means for draining condensates from heat exchangers, e.g. from evaporators F28B9/08 takes precedence
• CPC Class Codes: F28F 2260/02 having microchannels
• CPC Class Codes: Y10T 29/4935 Heat exchanger or boiler making
• CPC Class Codes: Y10T 29/49391 Tube making or reforming

Abstract

A tubing element for a heat exchanger is at least partially a rigid elongated tubing having a first end, a second end, a first side wall and a second side wall. First and second side walls are substantially parallel to each other. The distance between first side wall and second side wall is considerably smaller than the width of first side wall and second side wall, resulting in a substantially overall flat tubing structure with connection walls on both sides. The tubing element has a plurality of fins on at least one of the outer surfaces of the first side wall and/or of the second side wall. Fins define an angle enclosed by the fins and a connection wall. A heat exchanger, use of a tubing element, use of a heat exchanger and method of manufacturing of a tubing element to manufacture at least partially a heat exchanger are included.

Claims

1. Finned tubing element (10, 10′

) for a heat exchanger (100, 100′

), the finned tubing element (10, 10′

) being at least partially a rigid elongated heat exchanger tubing having at least a first end (20) and at least a second end (30) and having a first side wall (40) and a second side wall (50), the first side wall (40) and the second side wall (50) being arranged substantially parallel to each other and the distance (d) between the first side wall (40) and the second side wall (50) being considerably smaller than the width (W) of the first side wall (40) and the second side wall (50) resulting in a substantially overall flat tubing structure with connection walls (45, 55) on both sides,

the finned tubing element (10, 10′

) having a plurality of fins (60, 60′

) on at least one of the outer surfaces (42, 52) of the first side wall (40) and/or of 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 the first angle (γ

) is an angle of the fins (60, 60′

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

) is the 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 finned tubing element (10, 10′

) is at least partially tilted, sloped, and at least partially helically wound and twisted so as to form at least a part of a helical structure, wherein the fins are twisted between endpoints of the fins along a flow direction and curved by an offset of a center part of a middle section of each fin with respect to the endpoints of each fin.

2. Finned tubing element (10, 10′

) according to claim 1, wherein the helical structure has an overall cylindrical structure and/or that the helical structure is formed in a cylindrical shape.

3. Finned tubing element (10, 10′

) according to claim 1, wherein the finned tubing element (10, 10′

) has a plurality of fins (60, 60′

) on both of the outer surfaces (42, 52) of the first side wall (40) and of the second side wall (50).

4. Heat exchanger (100, 100′

) according to claim 3, further comprising a draining plate (80) between each pair of adjacent finned tubing elements.

5. Finned tubing element (10, 10′

) according to claim 1, wherein the fins (60, 60′

) are monoblock angled fins (60, 60′

).

6. Finned tubing element (10, 10′

) according to claim 1, wherein the angled fins (60, 60′

) are substantially perpendicularly arranged on at least one of the outer surfaces (42, 52) of the first side wall (40) and/or of the second side wall (50).

7. Finned tubing element (10, 10′

) according to claim 1, wherein the fins (60, 60′

) are inclined arranged on the at least one of the outer surfaces (42, 52) of the first side wall (40) and/or of the second side wall (50), whereby the second angle (δ

) between the fins (60, 60′

) and the outer surface (42, 52) is chosen within a range of approximately 15°

to 85°

, and that the fins (60, 60′

) and at least one of the connection walls (45, 55) are arranged such that they enclose the first angle (γ

).

8. Finned tubing element (10, 10′

) according to claim 1, wherein the fins (60) merely extend along the whole width (W) of at least one of the outer surfaces (42, 52) of the first side wall (40) and/or of the second side wall (50).

9. Finned tubing element (10, 10′

) according to claim 1, wherein the fins (60, 60′

) are arranged along a curve extending along the whole width (W) of at least one of the outer surfaces (42, 52) of the first side wall (40) and/or of the second side wall (50), whereby between the fins (60, 60′

) is a pitch and the angled fins (60, 60′

) are arranged in a plurality of substantially parallel rows along at least a part of the length of the finned tubing element (10′

).

10. The use of a finned tubing element (10, 10′

) according to claim 1 to manufacture at least partially a heat exchanger (100, 100′

) by tilting, sloping and at least partially helically winding and twisting the finned tubing element (10, 10′

) so as to form at least a part of a helical structure.

11. Method of manufacturing of a finned tubing element (10, 10′

) according to claim 1, whereby the finned tubing element (10, 10′

) is received by using an extrusion process of a heat transfer material, whereby the extrusion process is a single extrusion process and/or whereby preferably the heat transfer material is at least partially aluminium or copper or an alloy thereof.

12. Finned tubing element (10, 10′

) according to claim 1, wherein the tilted, sloped and twisted finned tubing element has curved connection walls (45, 55) and surfaces (42, 52), whereby all surfaces of the finned tubing element and of the fins are curved.

13. Finned tubing element (10, 10′

) according to claim 1, wherein a first distance (a) between two adjacent fins is larger than a second distance (b) between the adjacent fins and wherein the first distance (a) is at an entry section of gaps between the fins.

14. Finned tubing element (10, 10′

) according to claim 1, further comprising collecting elements (25, 35) and tubular connectors (27, 37) at the first and second ends (20, 30) of the finned tubing elements (10, 10′

).

15. Finned tubing element (10, 10′

) according to claim 1, wherein the width (W) of the first side wall (40) and the second side wall (50) is approximately at least 10 times larger than the distance (d) between the first side wall (40) and the second side wall (50) and/or that the first side wall (40) and second side wall (50) are connected respectively on both sides by a rounded connection wall (45, 55).

16. Finned tubing element (10′

) according to claim 1, wherein the fins (60′

) are segmented with gaps (62).

17. Heat exchanger (100, 100′

) having at least one finned tubing element (10, 10′

), the finned tubing element (10, 10′

) being at least partially a rigid elongated heat exchanger tubing having at least a first end (20) and at least a second end (30) and having a first side wall (40) and a second side wall (50), the first side wall (40) and the second side wall (50) being arranged substantially parallel to each other and the distance (d) between the first side wall (40) and the second side wall (50) being considerably smaller than the width (W) of the first side wall (40) and the second side wall (50) resulting in a substantially overall flat tubing structure with connection walls (45, 55) on both sides,

the finned tubing element (10, 10′

) having a plurality of angled fins (60, 60′

) on at least one of the outer surfaces (42, 52) of the first side wall (40) and/or of 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 the first angle (γ

) is an angle of the fins (60, 60′

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

) is the 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 finned tubing element (10, 10′

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

18. Heat exchanger (100, 100′

) according to claim 17, further comprising several finned tubing elements (10, 10′

) forming an overall substantially cylindrical structure having a central longitudinal axis (X), and wherein the finned tubing elements (10, 10′

) are spirally curved around the central longitudinal axis (X) and interleaved in the structure.

19. Heat exchanger (100, 100′

) according to claim 17, wherein the heat exchanger (100, 100′

) is a condenser or an evaporator or a radiator or a cooler.

20. The use of a heat exchanger (100, 100′

) according to claim 17 to exchange heat and to use the heat exchanger (100, 100′

) as a radiator or as a cooler as a condenser or as an evaporator.