Stack plate device for humidifier and humidifier

A stack plate device for a humidifier, the stack plate device comprising:

• a plurality of stack plates stacked one on top of one another in a stacking direction, adjacent ones of the stack plates being alternately rotated around a central axis, with a top side of one stack plate facing a bottom side of an adjacent stack plate, each of the stack plates comprising a peripheral frame, the peripheral frame enclosing a through-opening and comprising an inflow region and an outflow region that are transverse to the stacking direction,
• wherein a first group and a second group of flow channels are disposed in the stacked stack plates transversely to one another;
• and
• a semi-permeable layer separating each pair of the first group and the second group of flow channels,
• wherein three alternately successive ones of the stack plates enclose two of the flow channels, the flow channels providing a cross flow arrangement for a first fluid and a second fluid,
• wherein each of the stack plates further comprises four pairwise opposing supply channels respectively for the first fluid and the second fluid, a first pair of the four pairwise opposing supply channels being in fluid connection with the through-opening on the top side, and a second pair of the four pairwise opposing supply channels being sealed against the through-opening on the bottom side, and
• wherein the peripheral frame of each of the stack plates comprises inner connecting elements and outer connecting elements, the outer connecting elements being arranged farther away from the through opening than the inner connecting elements, and the inner and outer connecting elements of the adjacent ones of the stack plates being arranged one on top of another in an interlocking manner.