Washing tub unit and washing machine

摘要

A washing tub unit for a washing machine comprising
a) a washing tub (2) having a tub interior (9) and housing a rotatable drum (3) for receiving goods to be washed,
b) a draining sump (10) arranged in a lower region of the washing tub (2) for draining washing liquid from the tub interior (9), the draining sump (10) having a sump inlet (18) and a sump outlet (15),
c) wherein an air channel (16) is arranged in fluid communication with the sump (10) at a first end (16A) and with the tub interior (9) at a second end (16B),
d) the air channel (16) serving for releasing at least a part of air bubbles (AB) out of the washing liquid (L) which is contained in or flows through the sump (10) into the tub interior (9).