Patent ID: 9067216
Filing Date: 2015-06-30
Classification: B01D,B03C,C02F,G01F,H02J,H02M

Abstract:
1. An apparatus to remove ions, the apparatus comprising: an inlet to let water in the apparatus; an outlet to let water out of the apparatus; a capacitor; a spacer to separate a first and a second electrode of the capacitor and to allow water to flow in between the electrodes; and a power converter configured to convert a supply voltage of a power source to a charging voltage to charge the capacitor during an ion removal mode, and the power converter is constructed and arranged to recover energy from the capacitor by converting the voltage on the capacitor to supply voltage of the power source in a first electrode regeneration mode, and the power converter is constructed and arranged to switch the supply voltage between the first and the second electrodes in order to change the polarity of the electrodes with respect to the ion removal mode in a second electrode regeneration mode in which ions remaining on the electrodes are released into the water in between the electrodes by charging the electrodes with a charge at opposite polarity compared to the ion removal mode.