| 摘要 |
PURPOSE:To heat the liquid in a pressure tank evenly by providing a jetport and an inlet port in the tangent-line direction at the lower end of a sealed tube containing a heater within the pressure tank. CONSTITUTION:Inside a pressure tank 1 in which a water-supply pipe 2 and a flowing-out pipe 3 are communicated to each other a sealed tube 5 is fixed to a socket 6 located at the bottom of the tank. The top of the sealed tube 5, in which a heater 8 is built, is shut with an escape valve 14 provided, while in the lower end part thereof plural number of jet pipes 12 is projected in the radius direction, with a tapering jet port 12a at the tip opened somewhat downward in the tangent- line direction and also with an inlet port 13 made in the place lower than the jet port 12a. On the outer periphery of the sealed tube 5 a spiral fin 11 is provided. And the liquid in the pressure tank 1 is churned by a jet stream from the jet port 12a. |
