BACTERIAL MULTIPLICATION PREVENTING WATER PURIFYING DEVICE

PROBLEM TO BE SOLVED: To obtain a clean purified water since initial water without executing any priming by providing a by-pass detouring a water purifying device and circulating water stream into the inside of the water purifying device through the by-pass when the water stream in a clear water pipe is stopped. SOLUTION: The water stream is caused in a sterilizing device 3 and purification and sterilization are executed during the clear water is made to flow from a cock 7 by opening a stop cock 6. Then, when the cock 6 is closed, its signal is supplied to a controlling device 11, and power is supplied to a pump 9, and a blade 10 is begun rotation, and the water stream in a direction of an arrow (a) is caused in the by-pass 8, and since the pressure in the clear water pipe 5 is reduced, the water stream in the direction of the arrow (b) is caused in the water purifying device 4. That is, the circulation of the water is caused between the by-pass 8 and the water purifying device 4, the multiplication of bacteria is prevented by exhibiting a water purifying function and a sterilizing function as with at the time water is used by making a low flow-rate water stream in a water purifying tool 2 and a sterilizing device 3. The clear water minute in bacteria number is supplied since the initial water without executing any priming when the cock 6 is opened.