Patent ID: 8327923

Claim:
A wound heat exchanger with a tube bundle of a plurality of tubes, which are wound in several concentric tube layers around a core tube, and with a container cover, which defines an external chamber around the tubes, wherein an anti-drumming wall is shaped like a cylinder cover or a cylinder cover segment and is arranged on an external side of a first layer of tubes, wherein an axial extension of the anti-drumming wall is less than an axial extension of the tube bundle, and wherein a tangential extension of the anti-drumming wall is less than 360°, wherein a first group of anti-drumming walls has said anti-drumming wall as one of at least two anti-drumming walls as first and second elements, wherein the first element of the first group is arranged between the first layer and a second layer of tubes and the second element of the first group is arranged between a third layer of tubes and a fourth layer of tubes adjacent to the third layer of tubes, wherein axial edges of the first and second elements of the first group lie on leg surfaces of a first cylinder segment with an angle α, wherein an axis of the first cylinder segment runs on a core tube axis, wherein within the first cylinder segment no anti-drumming wall is arranged between the second and the third layers of tubes, wherein a second group of anti-drumming walls has axial edges that lie on leg surfaces of a second cylinder segment with an angle β, wherein an axis of the second cylinder segment runs on the core tube axis, wherein the first and second cylinder segments are disjoint and have a common leg surface, and wherein a sum of said angles α and β is equal to a whole number that is a fractional amount of 360°.