| 摘要 |
A hot water pipe structure is provided to prevent damage of a hot water pipe by receiving pressure in accordance with the variation of pressure in the hot water pipe. A hot water pipe(12) has an interior filled with hot water, and is inserted with an electric heating wire(14) for heating the hot water. The hot water pipe has an end closed by a sealing unit(20) for preventing outlet of the hot water. The sealing unit has one side where a pressure receiving unit(40) is arranged so that the pressure receiving unit contracts and expands in accordance with the variation of pressure in the hot water pipe. The pressure receiving unit includes a case(42), an elastic member(46), and a movable member(48). The case has an interior with a space, and one side opened to be connected to a connecting member of the sealing unit and the other side with an air outlet port(44). The elastic member is inserted within the case so as to provide elastic forces. The movable member is arranged at an inlet side of the case, and elastically supported at an end of the elastic member so that the movable member slides by receiving the pressure of the hot water pipe. |
