Abstract: A water cooling device for water purifiers is disclosed. In the above cooling device, the hot junction of a thermoelement compositely dissipate heat due to both latent heat of vaporization generated by water vaporization and air current blown by a blower fan, thereby cooling the purified water contained in the cold water tank more rapidly. The above thermoelement absorbs heat from the cold water tank at its cold junction and dissipates the heat to atmosphere at its hot junction. The above hot junction has a plurality of radiating fins which is covered with a zigzagged cooling water absorbing member saturated with cooling water. The cooling water is heated and vaporized by the heat of the hot junction thereby cooling the hot junction. The above radiating fins and zigzagged water absorbing member are clipped together by a clip unit in order to be brought into close contact with each other.

Abstract: An improved heat dissipating device for water purifier's thermoelement is disclosed. The device selectively uses either the fresh water or waste water of a membrane as refrigerant to absorb and dissipate heat of the thermoelement's hot junction. The above device is connected to a waste water drain conduit of the membrane and to a fresh water bypass conduit, thereby being selectively supplied with either the waste water of the membrane or the fresh water as the refrigerant. The waste water drain conduit has a flow control valve for controlling the amount of waste water to be supplied for the heat dissipating device. The fresh water bypass conduit has a solenoid valve for making the fresh water be directly supplied for the heat dissipating device when the fresh water is not supplied for the water purifying system as the purified water tank has been filled with the purified water.