I have one similar and it does work, granted the ambient humidity is less than around 50% I live in the desert in northern nevada and we cool our house with a huge one and I have a small desk size one I use in my room. Most of the time our ambient humidity is in the mid teens here so they work rather well.
“Not to scale”
. .
Incase that is still a mystery to you, that means that the drawing is visually inconsistent with the finished part. That 180 degree ‘corner’ is effectively a straight line, if drawn to scale.