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  • Method for producing a cooling channel in a winding for a welding transformer and winding comprising a cooling channel for a welding transformer = Verfahren zur Herstellung eines Kühlkanals in einer Wicklung für einen Schweisstransformator und Wicklung mit einem Kühlkanal für einen Schweisstransformator = Procédé de production d'un canal de refroidissement dans un enroulement d'un transformateur de soudage et enroulement comprenant un canal de refroidissement pour un transformateur de soudage : European patent specification, EP 4 270 426 B1, 2025-01-01
    Logar, Andraž, strojnik ; Černivec, Gregor, elektrotehnik, 1979- ; Klobčar, Damjan
    There is provided a method for producing a cooling channel in a winding (35) for a welding transformer (30) and a winding (35) for a welding transformer (30). In particular, the winding is (35) a ... secondary winding for the welding transformer (30). In the method, a holder (70) holds a winding module (35A; 35B) which comprises a first winding element (351), a second winding element (352) and a base element (353; 353B), wherein each one of the first and second winding elements (351; 352) protrudes from the base element (353; 353B) and wherein the first and second winding elements (351; 352) are positioned spaced to each other at the base element (353; 353B) so that the winding module (35A; 35B) has a t-cross-section, wherein the first winding element (351) comprises at least one window (3511; 3512) for accommodating a part of a core (37) of the welding transformer (30), wherein the second winding element (352) comprises at least one window (3521; 3522) for accommodating a part of a core (37) of the welding transformer (30), and wherein the base element (353; 353B) comprises grooves (3534, 3535) separating the base element (353; 353B) into sections (3531, 3532, 3533) such that at least one of the sections (3531, 3532, 3533) is connected to the first and second winding elements (351; 352) and such that at least one of the sections (3531, 3532, 3533) is connected to only one of the first and second winding elements (351; 352), and a plug (60; GOA, GOB, 60C) is sealed into a first hole (355) of a cooling channel (45), which first hole (355) is open to the outside of one of the elements (351, 352, 353), by controlling a movement of the plug (60; GOA, GOB, 60C) relative to the first hole (355) so that a solid-state welding joint (600; 601; 602) is produced by material of the plug (60; GOA, GOB, 60C) and material of the winding module (35A; 35B), in which the first hole (355) is positioned, wherein the holder (70) holds the winding module (35A; 35B) such that a movement between the winding module (35A; 35B) and the holder (70) is prevented while the step of sealing is performed.
    Type of material - patent ; adult, serious
    Publication and manufacture - Munich : European Patent Office, 2025
    Language - english
    COBISS.SI-ID - 227815939

    Link(s):

    https://worldwide.espacenet.com/patent/search/family/081387137/publication/EP4270426B1?q=pn%3DEP4270426B1

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