| 摘要 |
PURPOSE: An underwater heater is provided to effectively utilize a space by removing a pump by heating the water using convection. CONSTITUTION: An underwater heater comprises a inner pipe(110), a core pipe(130), a first heater(140), and a cable(148). The inner tube is connected to a water tank(1) and is expanded in underwater. An end of the inner tube located in underwater is closed and a site of the inner tube connected to the tank is opened. The core pipe is located in the inside of the inner tube. The both ends of the core pipe are communicated with the inner tube. Water of the tank is flowed into one end of the core pipe and is exhausted to the different side of the end unit of the core pipe. The first heater covers the circumference of the core pipe. The cable is connected to the first heater, and is expanded outside of the inner tube. |
