HEAT EXCHANGER, METHOD OF MANUFACTURING A HEAT EXCHANGER, AND ROLLER TRAIN FOR MANUFACTURING HEAT EXHANGER TUBES

• Main Author: OPFERKUCH, FRANK
• Format: Patent
• Language: English; French
• Published: 28.08.2008
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; BLASTING; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; HEAT EXCHANGE IN GENERAL; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; LIGHTING; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL ENGINEERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WEAPONS; WORKING OR PROCESSING OF METAL WIRE

The invention relates to a heat exchanger network composed of flat tubes having two narrow sides and two broad sides and having fins arranged between the broad sides of adjacent flat tubes. A medium can flow through at least some of the successive flat tubes in parallel. Another medium can flow approximately transversely thereto as a result of the fins and the two broad sides of the flat tubes having shaped portions in order to influence the flowing in the flat tubes. The heat-exchanging surfaces are enlarged according to the invention by virtue of the fact that the shaped portions are embodied as corrugations, running in the longitudinal direction of the flat tubes, of the broad sides of the flat tubes, and that the corrugations bear at least predominantly against the fins. L'invention concerne un réseau d'échangeurs de chaleur composé de tubes plats ayant deux côtés étroits et deux côtés larges, et ayant des ailettes agencées entre les côtés larges des tubes plats adjacents. Un milieu peut s'écouler à travers au moins certains des tubes plats successifs en parallèle. Un autre milieu peut s'écouler de manière approximativement transversale vers ceux-ci en raison des ailettes et des deux côtés larges des tubes plats ayant des parties mises en forme afin d'influencer l'écoulement dans les tubes plats. Selon l'invention, les surfaces d'échange de chaleur sont agrandies en vertu du fait que les parties mises en forme sont sous la forme d'ondulations, s'étendant dans la direction longitudinale des tubes plats, des côtés larges des tubes plats, et que les ondulations s'appuient au moins de manière prédominante contre les ailettes.