F - Mech Eng,Light,Heat,Weapons – 28 – D
Patent
F - Mech Eng,Light,Heat,Weapons
28
D
F28D 9/00 (2006.01) F28F 3/02 (2006.01) F28F 3/08 (2006.01)
Patent
CA 2718978
A plate heat exchanger comprises a plurality of heat exchanger plates (1). The plates are provided beside each other and permanently joined to each other to form a plate package having first plate interspaces and second plate interspaces. Each plate has a heat transfer area (20) and four porthole areas (21-24) defined by a porthole edge (25). Each of the porthole areas comprises an annular flat area (31) located at one of a primary and secondary level, and a set of inner portions (32) on the annular flat area at the other of the primary and secondary level. Each inner portion has an inner part adjoining the porthole edge and an outer segment adjoining the inner part and having an angular extension of at least 180°. The outer segment has a continuous contour and a radius R, which is allowed to vary within the range 0,8R <= R <= 1,2R.
Échangeur de chaleur à plaques comprenant une pluralité de plaques (1) déchangeur de chaleur. Les plaques sont placées côte à côte et jointes les unes aux autres de façon permanente pour former un bloc de plaques comportant des premiers espaces inter-plaques et des deuxièmes espaces inter-plaques. Chaque plaque comporte une zone (20) de transfert de chaleur et quatre zones (21-24) de perforation définies par un bord (25) de perforation. Chaque zone de perforation comprend une zone annulaire plate (31) située à un niveau primaire ou à un niveau secondaire, et un ensemble de parties intérieures (32) situées sur la zone annulaire plate à lautre des niveaux primaire et secondaire. Chaque partie intérieure comprend un segment intérieur jouxtant le bord de la perforation et un segment extérieur jouxtant le segment intérieur et couvrant une étendue angulaire dau moins 180°. Le segment extérieur présente un contour continu et un rayon R qui peut varier dans la plage 0,8 R = R = 1,2 R.
Andreasson Fredrik
Bermhult Rolf
Christensen Rolf
Larsson Haakan
Svensson Magnus
Alfa Laval Corporate Ab
Borden Ladner Gervais Llp
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