| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an atmospheric-opened hot-water supply device causing no failure nor reverse flow. <P>SOLUTION: This atmospheric-opened hot-water supply device is provided with a hot-water storage can body 1 for storing hot water heated by a heating means 2, and is so structured that a water-supply pipe 7 having two check valves 8 and 9, a backwater release valve 10 and a water-supply solenoid valve 11 communicates with the hot-water storage can body 1; a certain water level is always kept by opening and closing the water-supply solenoid valve 11 in response to a water level by a water level detection means 14 for detecting the water level in the hot-water storage can body 1; an atmospheric-opened chamber 16 is formed in an upper part of the hot-water storage can body 1; thereby a negative pressure state is released by opening the backwater release valve 10 in negative pressure due to a water failure or the like; a back flow is surely prevented by the two check valves 8 and 9; the inside of the hot-water storage can body 1 can be kept in an atmospheric-released state by opening/closing control of the water-supply solenoid valve 11 by the water level detection means 14. The hot-water supply device can be always surely used with an easy mind and without worrying about malfunction and can be easily installed in a small space without occupying much installation space by forming the shape of the hot-water storage can body 1 into a flat form. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
