Wound heat exchanger, in particular for heat pumps or refrigerating plants

摘要

The invention relates to a wound heat exchanger, in particular for condensation and/or evaporation in heat pumps or refrigerating plants. The heat exchanger consists of a jacket tube (1) consisting of at least one externally finned internal tube (2) arranged therein and having fins (3) running round in the shape of a helix, and of fittings (9) arranged at the end face and provided with openings (10, 11). In order to improve output and the degree of compactness while maintaining the previous advantages with regard to erosion and corrosion, according to the invention the heat exchanger is constructed in such a way that the fins (3) of the internal tube (2) run round in a T-shape which remains constant in the fin cross-section, the smooth ends (6) of the fins (3) being situated on an imaginary cylindrical face coaxial with the central axis of the tube, and the ends (6) approaching one another accompanied by the formation of narrow grooves (7). IMAGE