ELECTRICAL HOT WATER HEATER

• Main Authors: KAKEYA NOBUKAZU, HIRATA KUNIO, MINAMI TAKAYUKI
• Format: Patent
• Language: English
• Published: 01.06.1992
• Subjects: BLASTING; FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

PURPOSE:To reduce a limitation of an amount of use of hot water and reduce an electrical power fee by a method wherein a set temperature for starting heating of hot water within a main body of a hot water heater by a day-time electrical power is a lower temperature than a set temperature when the hot water is heated by a night-time electrical power. CONSTITUTION:At first, if a night-time electrical power supplying time is set by a control means, a night-time additional boiling starting set temperature is compared with that of the hot water, a sensor detects a temperature lower than a heating starting temperature, an electrical heater is turned on to start a heating of the hot water within a main body of the hot water heater. After the temperature of the hot water is increased up to a heating completion temperature of night time, the electrical heater is turned off and the operation is returned back to its original state. If the additional boiling is allowed except the night-time electrical power time and the temperature is decreased down to the additional boiling starting temperature of day-time, the electrical heater is turned on to start a heating of the hot water within the main body of the hot water heater. Then after the temperature of the hot water is increased up to the heating completion temperature of day-time, the electrical heater is turned off and the operation is returned back to its initial state.