Heat exchanger

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

Patent

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Details

F28F 3/08 (2006.01) B01J 19/24 (2006.01)

Patent

CA 2390900

A stacked assembly (10) of plates is provided, a first portion (11) of the length of the assembly (20) being formed of one or more first perforated plates (22, 52), with a central open region (29, 59A) enclosed by an inner annulus (24, 54) and limbs (25, 55) from the outer diameter of the inner annulus (24, 54) to the inner diameter of an outer peripheral annulus (23, 53), whereby the first plate (22, 52) has a central passageway (29, 59A) for the first fluid inside the inner annulus (24, 54) and a plurality of outer frusto-annular passageways (26, 56) for the second fluid, and, at one end of the first portion (11, 51), a second portion (16, 17, 56, 57) of the length of the assembly (10) formed of one or more second perforated plates (32, 62) of similar construction to the first plates (22, 52), each second plate (32, 62) differing from the first plate (22, 54) in that its outer peripheral annulus (33, 63) has one or more discontinuities (40, 70) to provide an inlet or an outlet into the outer frusto-annular passageways (36, 66) of the second portion,(16, 17).

L'invention porte sur un ensemble (10) de plaques empilées dont une première section (11) de sa longueur est constituée d'une ou plusieurs premières plaques (22, 52) perforées, la région (29, 59A) centrale, ouverte, de chaque plaque étant entourée d'un anneau (24, 54) intérieur et de segments (25, 55), du diamètre externe de l'anneau (24, 54) intérieur au diamètre interne de l'anneau (23, 53) périphérique extérieur. La première plaque (22, 52) comporte un passage (29, 59A) central où le premier fluide s'écoule dans l'anneau intérieur (24, 54) et une pluralité de passages (26, 56) tronco-annulaires extérieurs où s'écoule le second fluide. A une extrémité de la première section (11, 51), une seconde section (16, 17, 56, 57) de la longueur de l'ensemble (10) est constituée d'une ou plusieurs plaques (32, 63) de structure similaire à celle des premières plaques (22, 52), chaque seconde plaque (32, 62) se différenciant de chaque première plaque (22, 54) par son anneau (33, 63) périphérique externe qui comporte une ou plusieurs parties discontinues (40, 70) de façon à former un orifice d'admission ou un orifice d'évacuation dans les passages (36, 66) tronco-annulaires externes de la seconde section (16, 17).

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