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EP0819908A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Rolled section for the realization of heat exchangers and relevant production method

Assignee: Alcan Alluminio SpA
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Filing: 1997-07-04
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Granted: —
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Expires: 2017-07-04
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Abstract

Abstract A rolled section (1) for the production of heat exchangers, and in particular for the production of micro-fins (4) to be used in this kind of apparatus, that presents on one or both sides a series of scoring suitable to determine the same number of micro-fins (4) so as to increase the width of the corresponding exchange surface between rolled section and fluid.The process for the production of rolled sections is including the steps of: rolling a metallic sheet to obtain the required thickness rolling afterwards the sheet obtained in this way by means of a rolling-mill where at least one of these rolls presents on the surface a series of engraving suitable to engrave the corresponding surface of the rolled section in order to produce said micro-fins, the surface of said roll of the second rolling-mill being worked by means of photogravure techniques.

Inventors

  • 👤 Giuseppe De Santo

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 12:37
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; F28F3/04; F28F3/048; B; B21; B21B; B21B1/00; B21B1/22; B21B1/227; F28F1/00; F28F1/10; F28F13/00; F28F13/18; F28F13/185; B21B27/00; B21B27/005

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 50 words
Rolled sections for the realization of heat exchanger, characterized by the fact that they provide on at least one of the surfaces a series of scoring suitable to cause the same number of micro-fins so as to increase the width of the corresponding exchange surface between rolled section and fluid.
Claim 2
Dependent Claim 22 words
Rolled sections according to claim 1, characterized by the fact that said micro-fins have size (lenght and height) 9 to 200 micron.
Claim 3
Dependent Claim 27 words
Rolled sections according to claim 2, characterized by the fact that said micro-fins have a width 36 to 60 micron and an height 10 to 30 micron
Claim 4
Dependent Claim 48 words
Rolled sections according to claims 1 or 2, characterized by the fact that they are formed by a metallic sheet, on at least one of the surfaces of which a plurality of scoring are engraved, suitable to cause the same number of reliefs or micro-fins on said surface.
Claim 5
Dependent Claim 17 words
Use of rolled sections according to claims 1 to 4, for the production of heat exchanger devices.
Claim 6
Dependent Claim 22 words
Use of rolling sections according to claim 5, for the production of refrigerating little fins to be used in heat exchanger devices.
Claim 7
Dependent Claim 79 words
Process for the production of rolled sections according to one of the previous claims, characterized by the fact that it provides the following steps: rolling of a metallic sheet to obtain the required thickness further rolling of the sheet obtained in this way by means of a rolling-mill where at least one of the rolls presents on the surface a series of engraving suitable to engrave the corresponding surface of the rolled section in order to produce said micro-fins
Claim 8
Dependent Claim 27 words
Process according to claim 7 and 8, where the surface of said roll of the second rolling- mill is worked by means of the techniques of photogravure.

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