| 摘要 |
PURPOSE:To preferentially heat up high-temperature water in a short time all the time by storing hot waters of a high temperature and an intermediate temperature in a hot water storage tank by a method in which high-temperature water is stored in the upper part of the hot water storage tank, and intermediate temperature water is stored in the lower part of the hot water storage tank through a three-way valve- switching water supply circuit and the first water discharge circuit. CONSTITUTION:High-temperature hot water coming from the second water discharge circuit 16 in an one-cycle heating-up circuit is orderly supplied to the upper part of a hot water storage tank 1. A frequency converter 12 is set up to a maximum frequency by the signal of a heating-up sensor 19, and the revolving number of a compressor 6 is maximized. When hot water stored orderly is stored up to near the middle from the upper part of the tank 1, a three-way valve 14 is switched by the sensor 19, and hot water at the outlet of a heat exchanger 3 for hot water is flowed to the first water discharge circuit 15 and flowed into the lower part of the tank 1 through the circuit 15. By such a multi-cycle heating-up circuit, intermediate-temperature water is uniformly stored from the middle to the lower part of the tank 1. In this case, the converter 12 is set up to a rating frequency by the signal of the sensor 19, and the compressor 6 is operated with usual revolving number. |
