A direct water chiller having a high temperature sterilization function is disclosed. According to an embodiment of the present invention, there is provided a cold / hot water system in which a water tank is combined and cold water and hot water are provided, comprising: a water receiving member to which an inlet is connected A water receiving member connected to a water outlet formed at a lower portion of the water receiving member A water supply pipe to the road, a drain valve formed at the end and being turned on and off The drain valve is connected to the water supply pipe by the road. The drain valve is connected to the first water pipe through the first tee. A cooling module for cooling the cold water reservoir by the road Cold water reservoir by road It is a cold export water pipe which is connected to the water outlet and a cold water outlet valve which is installed on the cold water export pipe by the road and controls the on / off. A hot water tank connected to the hot water hose by way of the road and storing and heating the hot water A heating module for heating the hot water tank with the road It is equipped with on-export water pipes connected to the hot water tank by the road and hot water outlet pipes installed on the roadway. It has a hot water outlet valve which controls on / off A branch pipe connected to the water supply pipe by way of a road to be branched from the check valve, a high temperature sterilization valve formed in the branch pipe by the road to control opening and closing thereof, A controller having a switch for selectively controlling hot water outflow, cold water outflow, and high temperature sterilization, and the like.고온멸균 기능이 있는 직수냉온수기가 개시된다. 본 발명의 일 실시예는 생수통이 결합되며 냉수,온수가 제공되는 냉온수기에 있어서, 생수통의 입구가 결합되는 물 수용부재 상기 물 수용부재의 하부에 형성된 출수공에 연결되는 급수관 상기 급수관의 단부에 형성되며 온오프되는 드레인밸브 상기 급수관에 연결되며 상기 드레인밸브의 앞쪽에 형성되어 분기시키는 제1티이와, 상기 제1티이로부터 분기되어 생수를 냉각시키는 냉수저장통 상기 냉수저장통을 냉각시키는 냉각모듈 상기 냉수저장통의 출수부에 연결되는 냉수출수관과, 상기 냉수출수관에 장착되어 냉수 출수의 온오프를 제어하는 냉수출
