| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve safety to clogging of a passage in a heat exchanger with a flow velocity accelerating means. SOLUTION: This heat exchanger having a cylindrical body 1, a heating means 2, a water inlet part 4 and a water outlet part 6, has the flow velocity accelerating means 8 in a passage 7 in the heat exchanger. The flow velocity accelerating means is movable in regard to the passage wall of the heat exchanger.</p> |
