| 摘要 |
PURPOSE:To obtain desired hot water instantaneously by a construction wherein a preheating tube body and a high-pressure chamber provided in the vicinity of a hot-water cock are controlled to be opened and closed by a pressure shut-off valve according to the detection by a water quantity sensor. CONSTITUTION:When hot water passes through a hot-water supply pipe 5, the quantity of water is detected by a water quantity sensor 11, and a pressure shut-off valve 13 is opened on the basis of the detection. A high-pressure chamber of a preheating tube body 14 stores hydrogen under high pressure, and when it is made to communicate with a preheating chamber containing a heat-absorbing pipe 12, pressure and temperature fall to generate a reaction of H2+M MH2+ heat. Thereby MH2 is produced and a heat is generated, while the heat- absorbing pipe 12 absorbs the heat. The temperature of water in the heat-absorbing pipe can be set at a desired value according to the quantity of MH and the shut-off level of the pressure. When the water heated by a heat exchanger 3 begins to reach the preheating chamber 12, part of hot water supplying capacity is consumed by a reaction of MH2 H2+M+heat absorption in the preheating tube body 14, and MH2 in the preheating chamber 14a releases H2, which is stored in the high pressure chamber 14b. The closure of a hot-water supply cock 10 is detected by the water quantity sensor 11, and thereby the pressure shut-off valve 13 is closed. By the repetition of this operation, the instantaneous supply of hot water is enabled. |
