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Whirlpool Corporation is an American multinational manufacturer and marketer of home appliances headquartered in Benton Charter Township, Michigan, United States. [2] In 2023, the Fortune 500 company had an annual revenue of approximately $19 billion in sales, around 59,000 employees, and more than 55 manufacturing and technology research centers globally.
The refrigerator replaced the icebox, which had been a common household appliance for almost a century and a half. The United States Food and Drug Administration recommends that the refrigerator be kept at or below 4 °C (40 °F) and that the freezer be regulated at −18 °C (0 °F). [5] The first cooling systems for food involved ice. [6]
The brand first appeared on a four-drawer drop feed sewing machine sold from 1913 to 1919. [5] The first Kenmore washing machine was introduced in 1927. [6] The first Kenmore vacuum cleaners were introduced in 1932.
In New York City, ice consumption increased from 12,000 tons in 1843 to 100,000 tons in 1856. Boston's consumption leapt from 6,000 tons to 85,000 tons during that same period. Ice harvesting created a "cooling culture" as majority of people used ice and iceboxes to store their dairy products, fish, meat, and even fruits and vegetables.
The Einstein–Szilard or Einstein refrigerator is an absorption refrigerator which has no moving parts, operates at constant pressure, and requires only a heat source to operate. It was jointly invented in 1926 by Albert Einstein and his former student Leó Szilárd , who patented it in the U.S. on November 11, 1930 ( U.S. patent 1,781,541 ).
Using ice for cooling and preservation was not new at that time; the ice house was an introductory model for the modern icebox. [4] The traditional kitchen icebox dates back to the days of ice harvesting , which was commonly used from the mid-19th century until the introduction of the refrigerator for home use in the 1930s.
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