The dishwasher is a mechanical device used to wash dishes. It works by spraying hot water on the dishes. Detergent is added to this water. Afterward the dishes are sprayed with clean water to remove any residue. The whole process is mechanical, hence strong detergent can be used. Josephine Cochrane, a wealthy woman from the USA, is credited with its invention.
Dishwashers come in standard sizes and can be fitted in kitchen cabinets. They are rated as wash plates per hour. Let us now take a careful look into the dishwasher’s cleaning compartment.
A typical dishwasher has a tub inside, made of either plastic or stainless steel. It is believed that the latter is more resistant to hard water and provides better sound dampening. Some dishwashers have garbage disposals units installed inside them. These units help in collecting food residue. However, it is advisable to empty utensils of their food contents before loading them into the dishwasher.
The dishwashers available in the market today have micro-processor controlled wash cycles. This helps the dishwasher to adjust its wash duration to the quantity of dirt in the rinse water. The dishwasher has an in-built capacity to sense this chemically.
A typical dishwasher directs water from the bottom up through a conical structure to an upper wash room to spray water on the dish rack placed above. Some models have a tube attached to the rack that connects to a water source. This fundamental principle lies behind the working of every dishwasher.