Does anyone has a certitude about why the washing machine front “windows” are concave?
I thought that it may be a water pressure question but considering the limited amount of water and therefore of pressure I don’t think it is the right answer anymore…
And no, I am NOT rich…
the “concavity” is kinda cone shaped and the periphery of the windwon is “flat”.
As the clothe are rotating in the “I-don’t-know-the-english-word-for-that-part-of-the-machine” the inertia tend to push them toward the “exterior” and therefore the clothe rarelly ever contact the window at the most concave part…
I can’t believe I am actually thinking about such things!!
Nononono, you’re missing the point; the door seal is a rubber ring, like the neck of a bottle, the “concavity” is kinda cone shaped (to quote you) - like a cork.
A flat door would leak because the water splashes around inside then machineand would force it’s way through a flat sealed door, if you examine the rubber door seal, you’ll see that it’s turned back in on itself, this means that any water splashing against it tightens the seal against the glass ‘stopper’, like this [sub](hope this works)[/sub]:
-\ ===== <Door seal
\ | <Water pressing here closes the seal more tightly
/ | <Water pressing here closes the seal more tightly
That’s not to say that this is the only way it could be done; I’m sure there are ways of getting a flat door to seal properly, or other methods entirely, like loading the machine through the top, but I’m pretty sure that the reason that the door is concave on most washing machines is to ensure an effective seal.
The window is there to give your cat something to watch.
The window’s concave* so that the axial length of the wash cavity at the center is no more than that at the drum’s maximum diameter, otherwise the clothes will tend to spread out and collect in the center, reducing washing efficiency. The more the clothes are tossed and splashed around, the better they are cleaned.
(actually, it’s a cone with the top cut off. Class, who knows what that’s called? That’s right, it’s a frustrum of a cone)
actually, it’s a cone with the top cut off. Class, who knows what that’s called
the name for that kind of geometric figure is (in french) “cone tronqué” wich would give in english truncated cone, well I think
We have a lot of convincing “theories” but I kinda hoped a washing machine specialist would give us the definitive answer
A frustrum of a cone is formed when the top and bottom surfaces (or planes) are parallel to each other and normal (perpindicular) to the axis of the cone. The intersection of each plane and the cone forms a circle.
A truncated cone (cone tronqué?) is a more general case, in which the top plane may be at any angle - from normal to the cone’s axis, up to but not including the slope of the cone. The shape formed by the intersection of the plane and the cone in this case is an ellipse.
If the angle of the top plane is between parallel to the cone axis and the slope of the cone, the plane doesn’t cut the top of the cone off, it cuts the side off. In this case, the shape formed by the intersection of the plane and the cone is an hyperbola, or a parabola if the plane is exactly parallel to the cone axis.
Here ends the geometry lesson for today.
As for your plea for a “washing machine specialist”, how do you know one of us isn’t a Maytag repairman?
The same way a square is a special rectangle but a rectangle anyway the frustrum of a cone is a special truncated cone but a truncated cone anyway. Hence I am right
<<<<As for your plea for a “washing machine specialist”, how do you know one of us isn’t a Maytag repairman?>>>
for the extensive trolling I did here before my first post I know that when a doper as a background relevant to the fact discussed in a thread he announce it.
As no one announced he was a washing machine repairman/designer/specialist the logical conclusion is quite obvious, my dear watson