ION REMOVING UNIT FOR WATER HEATING DEVICE AND SCALE-FREE BOILER SCALE-FREE WATER HEATING DEVICE AND PORTABLE ION REMOVING DEVICE COMPRISING THE SAME

摘要

A scale-free boiler according to the present invention comprises: a boiler case; a main flow path disposed within the boiler case, and communicating with a heating flow path disposed on the outside of the boiler case in order to provide heating; a heat source unit to heat water flowing along the main flow path; and a filter unit removing ionic substances contained in the water flowing along the main flow path and water to be supplied to the main flow path through an electric deionizing method in order to prevent a scale from being formed.