HOT AND COLD WATER SUPPLY SYSTEM THAT CAN UTILIZE RESIDUAL WATER

摘要

A hot and cold water supply system capable of utilizing residual water according to the present invention has an advantage of reducing waste of water as residual water is not discarded by supplying the residual water stored in a residual water tank to a toilet low tank. In addition, provided are advantages that additional installation to the existing equipment is conveniently executed, and the installation is very simple and the cost is reduced as a large-scale construction for embedding the residual water tank in a wall or a floor of a bathroom does not have to be conducted, by installing the residual water tank inside a lower basin storage closet installed in a lower part of a basin. Furthermore, the appearance can be improved as the residual water tank is not exposed to the outside and is hidden by the lower basin storage closet. The hot and cold water supply system capable of utilizing residual water of the present invention comprises: a mixed water pipe; a residual water removal pipe; a residual water removal valve; a residual water tank; a residual water supply pipe; a check valve; a wash water supply pipe; a wash water supply valve; a control unit; a residual water water-level sensor; and a toilet water-level sensor.