Device for removing ions from water

Abstract

Device for removing ions from water based on the principle of capacitive deionization, wherein the device comprises a housing (1) having a water inlet (2) through which water to be deionized can flow into the device and a water outlet (3) through which deionized water can flow out of the device, wherein inside the housing (1) there is a stack (4) of several active layers (5), each active layer (5) having at least • a first electrode (6a), • a second electrode (6b) and • a water-permeable spacer layer (7) arranged between the first and the second electrode, comprising, wherein the first electrodes (6a) can be connected to an electrical source via a first electrically conductive contact rod (8a) and the second electrodes (6b) can be connected via a second electrically conductive contact rod (8b), wherein electrically conductive spacer elements (9) are arranged between successive first electrodes (6a) in the region of the first contact rod (8a) and between successive second electrodes (6b) in the region of the second contact rod (8b), which connect two successive electrodes (6a;6b) keep at a distance from each other, characterized in that the spacer elements (9) arranged in the area of ​​the first contact rod (8a) are electrically contacted with the first contact rod (8a) via first clamping discs (10a) arranged on the first contact rod (8a), wherein the first clamping discs (10a) are force-fit connected to the contact rod (8a), and that the spacer elements (9) arranged in the area of ​​the second contact rod (8b) are electrically contacted with the second contact rod (8b) via second clamping discs (10b) arranged on the second contact rod (8b), wherein the second clamping discs (10b) are force-fit connected to the contact rod (8b) and the spacer elements (9) do not bear force-fit against the first contact rod (8a) or the second contact rod (8b).

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