| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an expanded water draining mechanism for a main stop system electric water heater where the air is hardly released from a spout in discharging the water, the expanded water can be properly drained to a draining apparatus side in boiling-up of the electric water heater during water stop, and further chlorine in the water stored inside is hardly emitted. <P>SOLUTION: An aspirator 5 is disposed on a hot water supply pipe 6 connecting the main stop system electric water heater 4 comprising a water supply valve 2 and a water faucet 7, a branch pipe conduit 8 branched from the aspirator 5 is connected to the draining apparatus 9, a first check valve 7b is disposed on the water faucet 7, and a second check valve 55 for preventing intrusion of air or drainage water from a draining apparatus 9 side is disposed at a branch conduit pipe 8 side. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
