Floating bypass seal for rotary regenerative heat exchangers

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

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F28D 19/04 (2006.01)

Patent

CA 2338371

The gas flow bypass around the heating elements (40) in a regenerative air preheater is reduced by the use of floating bypass seals (46, 50, 56) which are placed in the rotor compartments (28) between stacked heating elements (40). The seals (46, 50, 56) comprise a frame (58) with an open center with the peripheral frame portion bridging the gaps between the heating elements (40) and the sides of the compartments (28). The seals (46, 50, 56) may be adjustable and may include a deformable edge seal (60) to actually contact and seal against the sides.

D'après cette invention, la dérivation d'un flux de gaz autour des éléments de chauffage (40) d'une unité de préchauffage d'air régénérative peut être réduite à l'aide de joints de dérivation flottants (46, 50, 56) qui sont disposés dans les compartiments rotor (28) entre les éléments de chauffage empilés (40). Ces joints (46, 50, 56) comprennent un cadre (58) comportant un centre ouvert, la partie périphérique du cadre chevauchant les jours entre les éléments de chauffage (40) et les côtés des compartiments (28). Ces joints (46, 50, 56) peuvent être ajustables et peuvent comprendre un joint marginal déformable (60) qui entre véritablement en contact contre les côtés et assure l'étanchéité.

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