Dishwasher - Navo

• A dishwasher is a mechanical device for cleaning dishes and eating utensils.
• The first reliable (hand-powered) dishwasher was invented in 1887 by Josephine Cochrane and unveiled at the 1893 Chicago World's Fair.
• In England, William Howard Livens invented a small dishwasher suitable for domestic use in 1924. It was the first modern dishwasher, and incorporated most of the design elements .
• The mechanical dishwasher cleans by spraying hot water, typically between 55 and 75 °C (130 and 170 °F) at the dishes, with lower temperatures used for delicate items. A mix of water and detergent is circulated by a pump. Water is pumped to one or more rotating spray arms, which blast the dishes with the cleaning mixture.
• By the 1970s dishwashers had become commonplace in domestic residences in North America and Western Europe. By 2012, over 75 percent of homes in the US and Germany had dishwashers.