Washing machine with a bubble generator

A washing machine which comprises:

• a stationary tube capable of containing a level of washing fluid;
• a rotary drum rotatably and horizontally mounted on said stationary tube with a portion thereof submerged under the washing fluid, said drum having a plurality of through-holes distributed to allow the washing fluid to flow into or out of said drum;
• means for causing said drum to rotate in a forward or reverse direction;
• and
• means for supplying predetermined amount of air bubbles into said drum on a batchwise manner at such a time interval as to allow said amount of air bubbles supplied in given batch to be substantially collapsed before a next supply thereof commences, wherein said bubble supply means includes an air pump for producing a volume of pressurized air, a bubble generator associated with said air pump for converting the pressurized air into said air bubbles, and means for controlling the operation of said air pump so that no air bubbles may be supplied until said amount of air bubbles supplied in a preceding batch is substantially collapsed.