D - Textiles – Paper – 21 – G
Patent
D - Textiles, Paper
21
G
D21G 1/02 (2006.01)
Patent
CA 2516951
The invention relates to a temperature-controlled, rotating, rotational symmetric heat exchanger, particularly for the pressing mechanism, drying mechanism or smoothing mechanism of a machine for producing web-like products such as paper webs or plastic films. The heat exchanger can be temperature- controlled preferably with fluids or vaporous heat transfer media or with heating involving electrical means. The aim of the invention is to improve a heat exchanger of the aforementioned type as to achieve surface hardnesses of far greater than 400 - 450 HV and to minimize the chemical/mechanical corrosion even at heat transfer capacities > 80 kW/m. To this end, the heat exchanger is plamatized.
L'invention concerne un échangeur thermique à symétrie de rotation, rotatif, pouvant être tempéré, notamment destiné à l'unité de compression, de séchage ou de lissage d'une machine de fabrication de produits en bande, notamment de bandes de papier ou de plastique. Ledit échangeur peut de préférence être tempéré au moyen de fluides ou de caloporteurs vaporeux ou d'un chauffage éléctrique. L'invention vise à améliorer un tel échangeur thermique de manière à atteindre des duretés de surface nettement supérieures à 400-450 HV, et à réduire la corrosion chimique/mécanique même pour des puissances de transfert thermique > 80 KW/m. A cet effet, l'échangeur thermique selon l'invention est à plasma.
Fetherstonhaugh & Co.
Walzen Irle Gmbh
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