Connection of tubes using thermally curable adhesives

Details Connection of tubes using thermally curable adhesives Connection of tubes using thermally curable adhesives

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 13/10 (2006.01)

Patent

CA 2724217

The invention relates to a method for connecting a first tube to a second tube, the tubes being interconnected in an overlapping region by means of an adhesive that fills a gap in the overlapping region between the tubes. Said method is characterised in that: a) adhesive is applied to the overlapping region of at least one of the tubes and the adhesive is selected in such a way that it is solid at temperatures of below 30 °C after application to the overlapping region and prior to the connection of the tubes, and cannot be cured without thermal activation; b) the tube having the adhesive in the overlapping region is pushed onto or inside the other tube; c) the tubes are fixed in relation to one another in the overlapping region by a heatable clamp, said clamp being designed in such a way that it can heat the tubes in said region; c) the adhesive is thermally activated by heating the overlapping region with the aid of the heatable clamp, whereby the adhesive cures and connects the two tubes in the overlapping region; and d) the heatable clamp is removed once the adhesive has cured. The invention also relates to a method for produ-cing a refrigerator and to a refrigerator comprising corre-spondingly joined tube sections.

L'invention concerne le raccordement d'un premier tuyau à un second tuyau, les tuyaux étant raccordés l'un à l'autre dans une zone de chevauchement à l'aide d'un adhésif qui remplit un espace situé dans la zone de chevauchement entre les tuyaux. L'invention est caractérisée en ce que: a) l'adhésif est appliqué sur la zone de chevauchement d'au moins l'un des tuyaux et l'adhésif est sélectionné de sorte qu'il est solide à des températures inférieure à 30 °C, après son application sur ladite zone de chevauchement, et avant le raccordement des tuyaux et qu'il ne peut pas durcir sans activation thermique, b) le tuyau présentant l'adhésif dans la zone de chevauchement est emboîté sur l'autre tuyau ou inséré dans ce dernier, c) les tuyaux sont fixés l'un contre l'autre à l'aide d'une pince chauffante qui est conçue de manière à pouvoir chauffer les tuyaux dans la zone de chevauchement, c) l'adhésif est thermiquement activé par chauffage de la zone de chevauchement au moyen de la pince chauffante, de sorte qu'il durcit et raccorde les deux tuyaux dans la zone de chevauchement, et d) après durcissement de l'adhésif, la pince est retirée. L'invention concerne également un procédé pour produire un réfrigérateur, et un réfrigérateur qui comprend des parties de tuyau assemblées selon ledit procédé.

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