| 摘要 |
A shell-and-tube heat exchanger including a casing tube and at least one inner tube for treating liquid food products, optionally also with a product/product flow guidance, and having at least one thermal-expansion compensating device for the casing and/or inner tube, with the compensating device having a surface which can be contacted by the product to be treated, where the surface is provided on a bellows integrated into the casing and/or inner tube, with a plurality of relatively wide folds which extend around the tube axis and are of rounded cross-section, with the respective fold being configured with a radial depth and an axial width with a ratio of B:T of about 1 or more and to be cleanable on the product side in a hygienically irreproachable way.
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