| 摘要 |
PURPOSE: A flow path switching device for cleaning a heat exchanger tube is provided to reduce production costs by simplifying the structure of the device and to facilitate maintenance work. CONSTITUTION: A flow path switching device for cleaning a heat exchanger tube comprises first and second bodies(110,120), a drive unit, a pipe-shaped supply switching path(130), and a pipe-shaped discharge switching path(140). The first body has a first switching hole, a supply water inlet(112), and a supply water outlet(113). The second body has a second switching hole, a discharge water outlet(123), and a discharge water inlet(122). The drive unit rotates the first and second switching holes. The supply switching path is connected to the first switching hole and the second body between the second switching hole and the discharge water inlet. The discharge switching path is connected to the second switching hole and the first body between the first switching hole and the supply water outlet. |
