| 摘要 |
A heat exchanger has an inner pipe inside of which a product travels, the inner pipe having a perforated lateral wall, an outer pipe surrounding the inner pipe and formed as a jacket, a plurality of flanges extending between the inner pipe and the outer pipe to form a plurality of segments, a plurality of supply passages each communicating with a segment of first group of segments for supplying a cooling liquid into a space between the outer pipe and the inner pipe, a plurality of discharge passage each communicating with one segment of a second group of the segments for discharging the cooling liquid from a space between the outer pipe and the inner pipe, each of the segments of the first group with which one of the supply passages is connected being located between two segments of the second group with which the discharge passages are connected.
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