| 摘要 |
The invention relates to a brush element (1), which is formed by two caps (3) and, clamped in between, a twisted wire (5) with attached material (6), the cleaning effect on the tubes (2) of a heat exchanger to be cleaned being improved by the caps having swirl elements (7), which help impart torsion to the brush element about its longitudinal centre axis (X) when the caps are subjected to the flow of a medium, for example coolant. <IMAGE>
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