| 摘要 |
A hot water supply device is provided to circulate hot water by the vapor pressure generated from a pipe by heating a local part of the pipe filled with water through the use of an electric heater. A hot water supply device comprises a hollow case(10) having one side with a supply port(11) and a return port(12); a water storage unit(20) arranged in an upper portion of the case and communicated to the return port; a supply pipe(30) having one end communicated to the water storage unit and the other end communicated to the supply port, and a local heating portion(40) which contacts an electric heater(50) and generates vapor pressure; and a first check valve(60a) and a second check valve(60b) arranged in front and rear supply pipes of the local heating portion, respectively, so as to prevent backflow of water. |
