| 摘要 |
<p>PURPOSE:To obtain a safe and economical hot water supplier free from no water burning of the hot water supplier, which is detected by a water level detecting means and at the same time energizing to a heater is stopped, resulting in preventing no water burning from occurring and the request for water supply is informed. CONSTITUTION:A hot water storage tank 1 is heated by a heater 2. At the same time, a water level detecting means detects the water level in the hot water storage tank 1 and, if the water level is below a prefixed value, issues a signal to put a display means 6 into actuation. In addition, a heating stopping means 4 stops energizing to the heater 2 by means of the water level detecting means 5. Concretely, when the amount of water stored in the hot water storage tank 1 becomes scarce, energizing to the heater 1 is cut off and at the same time lamps or the like in the display means 6 informs a user for no-water burning protection, resulting in preventing the fire hazard due to no water burning from occurring and the decrease of the durability of a hot water supplier from developing and at the same time eliminating the waste electric power consumption and further realizing a simple and low cost structure.</p> |
