High pressure heat exchanger

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

Patent

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Details

F28D 7/00 (2006.01) F28F 1/02 (2006.01)

Patent

CA 2494692

A heat exchanger including inlet and outlet header (72, 76) portions for a refrigerant (such as CO2), serpentine multiport tubes (62) each with a plurality of aligned tube runs (64, 66), and at least three plate assembly (84, 86, 88, 90) fluid paths. Each plate assembly (84, 86, 88, 90) fluid path includes a pair of spaced plates secured together at their edges to define an enclosed space with a fluid inlet and fluid outlet on opposite sides of the space. One plate of one fluid path (84) is positioned against first aligned tube runs (64, 66), one plate of a second (90) of the fluid paths (84, 86, 88, 90) is positioned against second aligned tube runs (64, 66), and third fluid path (86, 88) is positioned between the first and second aligned tube runs (64, 66). The plates may be substantially identical to one another.

L'invention concerne un échangeur thermique comportant des parties collecteur entrée et sortie (72, 76) pour un agent réfrigérant (tel que CO¿2?), des tubes (62) multivoies de serpentins, tous dotés d'une pluralité de tronçons tubulaires alignés (64, 66), et au moins trois passages de fluides (84, 86, 88, 90) sous forme d'ensembles plaques. Chaque passage de fluide (84, 86, 88, 90) sous forme d'ensemble plaque comprend deux plaques espacées fixées ensemble sur leurs bords pour délimiter un espace fermé, une entrée de fluide et une sortie de fluide étant disposées sur des faces opposées de l'espace. Une plaque d'un passage de fluide (84) est placée contre des premiers tronçons tubulaires alignés (64, 66), une plaque d'un deuxième (90) passage de fluide (84, 86, 88, 90) se trouve contre des deuxièmes tronçons tubulaires alignés (64, 66), et une troisième passage de fluide (86, 88) est positionné entre le premier et le deuxième tronçon tubulaire aligné (64, 66). Les plaques peuvent être sensiblement identiques.

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