Humidifying device having channel plates and channel plate for humidifying device

A humidifying device comprising:

• a plate stack comprising channel plates sequentially following each other in a stacking direction in the plate stack, the channel plates each comprising a longitudinal axis perpendicular to the stacking direction,
• wherein one or more of the channel plates comprising a first channel partial plate and a second channel partial plate that are arranged on each other in the stacking direction,
• wherein each of the first channel partial plate and the second channel partial plate comprises a circumferentially extending frame and stays arranged between two opposite sides of the circumferentially extending frame, the stays extending at a slant to the longitudinal axis, and the stays of the first channel partial plate and the stays of the second channel partial plate cross each other when viewed in the stacking direction,
• wherein the plate stack further comprises semipermeable layers separating at least a first group of flow channels and a second group of flow channels from each other in the plate stack,
• wherein flow channels of the first group of flow channels alternate with flow channels of the second group of flow channels in the stacking direction, and
• wherein the first group of flow channels or the second group of flow channels extends along the longitudinal axis.