Blood warming apparatus

F - Mech Eng,Light,Heat,Weapons – 24 – H

Patent

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Details

F24H 1/12 (2006.01) A61M 1/36 (2006.01) A61M 5/44 (2006.01) F24H 9/20 (2006.01)

Patent

CA 2237179

An apparatus (10) for the controlled heating of fluid is provided. The apparatus (10) has a general elongated heating core (16) with an exterior surface (36) formed of a material having a high thermal conductivity and frustoconically shaped to slidingly receive an assembly (14) so that the assembly envelops the surface along at least a portion of the length of the core. The assembly (14) forms a sealed passageway (46) for generally unidirectional sheet like flow upward along the core (16). A control system (20) selectively operates the heating core (16) so that the fluid, under varying flow rates, is warmed to a desired temperature without overheating, before the fluid flows from the passageway (46).

L'invention concerne un appareil (10) permettant le réchauffement régulé d'un fluide. L'appareil (10) comporte une partie centrale (16) chauffante de forme générale allongée comprenant une surface extérieure (36) formée d'une matière présentant une conductivité thermique élevée et en forme tronconique pour recevoir de manière coulissante un ensemble (14) de telle sorte que l'ensemble recouvre la surface sur au moins une partie de la longueur de la partie centrale. L'ensemble (14) forme un passage hermétique (46) permettant un écoulement en forme de feuille généralement unidirectionnel dirigé vers le haut le long de la partie centrale (16). Un système de régulation (20) fait fonctionner sélectivement la partie centrale chauffante (16) de telle sorte que le fluide, à des vitesses d'écoulement variées, est chauffé à une température voulue sans excès de chauffage, avant que le fluide ne s'écoule du passage (46).

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