| 摘要 |
The present invention relates to a residence time chamber (8). In particular the invention relates to a residence time chamber (8) for improving the action of the biocide in water purification. It is another aspect of the present invention to incorporate the residence time chamber (8) in water purification devices, particularly to gravity-fed water purification devices that operate without electricity and pressurised water, but the invention may also be applicable to devices using electricity and pressurized water. It has been found that a residence time chamber having a simple actuator device consisting of a fill cup (5) connected to a plunger and a resilience mechanism (7) provides a mechanical technique to automatically operate the controlled flow of fluid to give sufficient residence time for the action of biocide. |
