ION REMOVAL UNIT FOR WATER HEATER, AND SCALE-FREE BOILER, SCALE-FREE WATER HEATER, AND PORTABLE ION REMOVER INCLUDING THE SAME

摘要

A scale-free boiler of the present disclosure includes a boiler case, a main flow path disposed inside the boiler case and in communication with a heating flow path disposed outside the boiler case to provide heating, a heat source for heating water flowing along the main flow path, and a filter for removing, based on an electrical force, an ionic material contained in the water flowing along the main flow path or water to be supplied to the main flow path to prevent occurrence of scale.