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DE-102024133153-A1 - Baffle plate segment and baffle plate arrangement for a heat exchanger, method for manufacturing a baffle plate arrangement

DE102024133153A1DE 102024133153 A1DE102024133153 A1DE 102024133153A1DE-102024133153-A1

Abstract

The invention relates to a guide plate segment (1a, 1b) for a heat exchanger. The guide plate segment (1a, 1b) is helically shaped and has at least one end face a receiving section (3a, 3b, 4a, 4b) for a further guide plate segment (1a, 1b). The invention further relates to a guide plate arrangement (100) and a method (400) for manufacturing a guide plate arrangement.

Inventors

  • Daniel Utsch

Assignees

  • ZILONIS GmbH

Dates

Publication Date
20260513
Application Date
20241113

Claims (9)

  1. Guide plate segment (1a, 1b) for a heat exchanger, wherein the guide plate segment (1a, 1b) is helically shaped and has at least one end face a receiving section (3a, 3b, 4b, 4b) for a further guide plate segment (1a', 1b').
  2. Guide plate segment (1a, 1b) according to Claim 1 , wherein the receiving section (3a, 3b) is designed for a positive locking connection.
  3. Guide plate segment (1a, 1b) according to Claim 2 , where the positive-locking connection is a tongue and groove joint.
  4. Guide plate segment (1a, 1b) according to Claim 1 , wherein the recording section (3a, 3b, 4a, 4b) is designed as a recording paragraph.
  5. Guide plate segment (1a, 1b) according to one of the preceding claims, wherein the guide plate segment (1a, 1b) is formed from a material comprising a stainless steel or a temperature-resistant plastic.
  6. Guide plate arrangement (100) for a heat exchanger, comprising several guide plate segments (1a, 1b) according to one of the Claims 1 until 5 comprises those arranged in a row and connected to each other at the ends.
  7. Guide plate arrangement (100) according to Claim 6 , wherein end-face abutting guide plate segments (1a, 1b) of the several guide plate segments (1a, 1b) are materially bonded to each other.
  8. Method (400) for manufacturing a guide vane assembly (100) for a heat exchanger, the method comprising: - (401) additive manufacturing of several guide vane segments (1a, 1b) according to one of the Claims 1 until 5 , - (403) Arranging the guide plate segments (1a, 1b) so that the receiving sections (3a, 3b, 4a, 4b) of two guide plate segments (1a, 1b) are abutting; and - (405) joining the guide plate segments (1a, 1b) in the area of the receiving sections (3a, 3b, 4a, 4b).
  9. Procedure (400) according to Claim 8 , wherein the material-bonded joining includes welding, in particular tack welding.

Description

AREA OF INVENTION The present invention relates generally to a heat exchanger and in particular to a guide plate or guide plate arrangement of a tube bundle heat exchanger and to a method for manufacturing a guide plate arrangement. BACKGROUND OF THE INVENTION Tube bundle heat exchangers are commonly known to include baffles (or "deflection plates") to guide the fluid flow within the heat exchanger. For example, continuous helical baffles can be used, which enable lower pressure loss, reduced bypass flow, an increased heat transfer coefficient, etc., for the fluid flow within the heat exchanger. One challenge in manufacturing such continuous helical baffles lies in creating the holes for the heat exchanger tube bundle. If the holes are drilled into a flat sheet, they deform into elliptical holes when the sheet is stretched to form the helical shape, making them unsuitable for the tubes. Therefore, a drilling template has traditionally been used to manufacture continuous helical baffles. The template holds the sheet in the desired helical shape, allowing the holes to be drilled. Using a drilling template requires its prior fabrication. This process is time-consuming and costly. Furthermore, using a drilling template increases the number of work steps. The object of the present invention is to provide an improved guide plate segment, an improved guide plate arrangement and an improved method for manufacturing a guide plate arrangement that overcomes the aforementioned disadvantages. This problem is solved by a guide plate segment according to claim 1, a guide plate arrangement according to claim 6 and a method according to claim 8. SUMMARY OF THE INVENTION According to a first aspect, the present invention provides a guide plate segment for a heat exchanger according to claim 1. The guide plate segment is helically shaped and has at least one end face a receiving section for a further guide plate segment. The heat exchanger is designed as a shell and tube heat exchanger, and the baffle segment is part of a baffle plate intended to guide a fluid flow within the heat exchanger. This means that several baffle segments can be connected to form the baffle plate or a baffle plate assembly. The guide vane segment is helically shaped. This means that the guide vane segment (or its longitudinal axis) follows a helical or screw-like path. In some examples, "helical shape" can also mean that the guide vane segment has fewer than one complete turn. The pitch or angle of the helix can range from 15° to 50°, for example. In some examples, the angle of pitch can be between 20° and 45°. Furthermore, the guide plate segment includes mounting holes for a tube bundle of the heat exchanger. In a conventional heat exchanger with segmented baffles, flow paths vary, particularly between longitudinal and transverse flows to the tubes of the tube bundle. The longitudinal flow in the heat exchanger leads to increased pressure losses with relatively low heat transfer. With a helical baffle segment, the flow is essentially uniform along the entire flow path. The end faces of the guide plate segment correspond to the two ends of the (imaginary) longitudinal axes of the guide plate segment. To connect the guide plate segment to another guide plate segment, a receiving section is provided at least at one end face of the guide plate segment. The second guide plate segment also has a further receiving section, which is designed accordingly to the receiving section of the first guide plate. The receiving section and the further receiving section together form the positive-locking connection. The receiving section allows for easy arrangement and alignment of the guide plate segment with the other guide plate segment. In some embodiments, the receiving section can be designed for a positive-locking connection. Consequently, the further The guide plate segment includes a suitably designed receiving section for forming the positive-locking connection. In some examples, the positive-locking connection may be designed to be detachable. The positive-locking connection is designed to prevent relative movement between the guide plate segment and the next guide plate segment in a direction tangential to the centerline of the connected guide plate segments. In some embodiments, the positive-locking connection can be designed as a tongue and groove joint or a tongue-and-groove joint. These types of connections are relatively easy to manufacture. In some embodiments, the receiving section (of the guide plate segment) is designed as a receiving shoulder. This receiving shoulder is configured to receive the correspondingly designed receiving shoulder of the next guide plate segment. These receiving shoulders allow the guide plate segments to be arranged end-to-end relatively easily. In some embodiments, the guide plate segment can be made of a material comprising stainless steel or a temperature-resistant plastic. In some examples, the material is used in a