TUBE ATTACHMENT IN COIL HEAT EXCHANGERS Russian patent published in 2022 - IPC F28D7/02 F28F9/13 

FIELD: heat engineering.

SUBSTANCE: invention relates to heat exchanger (1) including: tube bundle (3) containing at least tube (30) for reception of liquid medium (M), wherein at least one tube (30) is wound on central tube (300), which is located along longitudinal axis (z), wherein at least one tube (30) with its first tubular section (31) is adjacent to at least one rib (10), which is located along central tube (300); and at least one first yoke element (41) for attachment of first tubular section (31) to at least one rib (10), wherein at least one first yoke element (41) with its lower side (41a) facing first tubular section (31) is adjacent to first tubular section (31). In accordance with the invention, it is provided that at least one first yoke element (41) contains at least one first fixing zone (411), which forms bulge (400) on upper side (41b) of at least one first yoke element (41), opposite to lower side (41a), and which forms recess (401) on lower side (41a) of at least one first yoke element (41). In addition, the invention relates to an attachment system and a method.

EFFECT: prevention of melting and connection of a yoke element with a fixed tube, when making a welded connection.

15 cl, 6 dwg