Flat plate heat exchanger coil and method of operating the same

F - Mech Eng,Light,Heat,Weapons – 28 – F

Patent

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Details

F28F 3/12 (2006.01) F28D 9/00 (2006.01) F28G 7/00 (2006.01) F28G 9/00 (2006.01)

Patent

CA 2494425

A flat plat plate heat exchanger coil typically used in a bulk material heat exchanger is provided. The flat plate heat exchanger coil is designed to operate under a negative internal pressure to eliminate depressions or dimples that are typically formed into the sides of these types of heat exchanger coils during the manufacture process. With the removal of the depressions or dimples the tendency for bulk material to accumulate to the exterior surface of the coil is reduced, thereby increasing the service period of the coil. The flat plate is also provided with methods of automated cleaning of the plate coil, such as applying a low positive internal pressure in a cyclic manner to dislodge material accumulated on the coil, bumping the coil to causing a shock wave through the coil or providing means to create a shearing effect between adjacent coils to dislodge material accumulated on the exterior of the coil.

L'invention concerne un échangeur thermique à serpentin à plaques plates habituellement utilisé dans un échangeur de chaleur de matériau en vrac. L'échangeur thermique à serpentin à plaques plates est conçu pour fonctionner sous une pression interne négative afin d'éliminer les abaissements ou les fossettes qui se forment habituellement sur les côtés de ces types de serpentin échangeur durant le processus de fabrication. Grâce à l'élimination des abaissements ou des fossettes, on réduit la tendance du matériau en vrac à s'accumuler sur la surface extérieure du serpentin, augmentant ainsi la durée de service de celui-ci. La plaque plate est également prévue avec des méthodes de nettoyage automatisé du serpentin à plaques, qui consiste notamment à exercer une faible pression interne positive de manière cyclique pour décoller le matériau accumulé sur le serpentin, à déloger le serpentin pour causer une onde de choc à travers le serpentin ou à fournir un moyen de créer un effet tranchant entre les serpentins adjacents pour déloger le matériau accumulé sur l'extérieur du serpentin.

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