Vacuum coffee maker

Vacuum coffee maker

A vacuum coffee maker brews coffee using two chambers where vapor pressure and vacuum produce coffee which is clean, crisp, rich and smooth compared to other brewing methods. This type of coffee maker is also known as "vac pot", "siphon" or "syphon coffee maker" and was invented by Loeff of Berlin in the 1830s. These devices have since been used for more than a century in many parts of the world. [ [http://baharris.org/coffee/History.htm Baharris: history] ] Design and composition of the vacuum coffee maker varies. The chamber material is pyrex, metal or plastic, and the filter can either be a glass rod, or a screen from cloth, paper or nylon. The Napier Vacuum Machine, presented in 1840, was an early example of this technique. [ [http://www.technotoad.com/the-napier-vacuum-coffee-maker.php The Napier Vacuum Machine] ] While vacuum coffee makers generally were excessively complex for everyday use, they were prized for producing a clear brew, and were quite popular until the middle of the twentieth century. The Bauhaus interpretation of this device can be seen in Gerhard Marcks’ Sintrax coffee maker of 1925. [ [http://imagesvr.library.upenn.edu/cgi/i/image/image-idx?type=detail&cc=fisher&entryid=X-n2005060542&viewid=1&sstrt=1&hits=1&q1=aaaJenaer%20Glaswerkaaa&cat1=All%20Categories&thsz=12&txsz=50&slsz=1&c=fisher Sintrax Coffee Maker, Jenaer Glaswerk] ] [ [http://home.planet.nl/~rjeroenv/brewing/vacpots/sintrax/Sintrax.html Sintrax Coffee Maker] ]

Workings

The principle of a vacuum coffee maker is to heat water in the lower vessel of the brewer until expansion forces the contents through a narrow tube into an upper vessel containing coffee grounds. When the lower vessel has more or less emptied itself and enough time has elapsed, the heat is removed and the resulting vacuum will draw the brewed coffee through a strainer back into the lower chamber from which it can be decanted. The device must usually be taken apart to pour out the coffee.

An early variation of this principle is called a balance siphon. This implementation has the two chambers arranged side by side on a balance-like device, with a counterweight attached to the heated chamber. Fact|date=March 2008 Once the vapor has forced the hot water out, the counterweight activates a spring-loaded snuffer which smothers the flame and allows the initial chamber to cool down thus creating a vacuum and causing the brewed coffee to seep in.

External links

* [http://baharris.org/coffee/History.htm Coffee Makers]
* [http://www.coffeekid.com/coffee/vacpots/vacpotfaq Vac Pot FAQ]

References


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • vacuum coffee maker — noun : a coffee maker consisting of an upper bowl that holds ground coffee and a filtering device and is fitted by a tight seal into a lower bowl that holds water which on boiling rises into the upper bowl from which it is drawn through the… …   Useful english dictionary

  • vacuum coffee maker — a coffee pot with upper and lower glass units, the upper for ground coffee and the lower for water that, when boiled, rises through the filter stoppered bottom of the upper unit and remains there until drawn back down to the lower unit as brewed… …   Universalium

  • Coffee service — is a catch all term for services related to the delivery of coffee to employees of a business at low or no cost to them. [1] Providing coffee to employees is popular among employers since employees will likely not leave the workplace to purchase… …   Wikipedia

  • Coffee roasting — machine Light roasted coffee beans …   Wikipedia

  • Coffee production in India — Coffee forests in India Coffee plantation in India …   Wikipedia

  • Coffee substitute — Coffee substitutes are non coffee products, usually without caffeine, that are used to imitate coffee. Coffee substitutes can be used for medical, economic and religious reasons, or simply because coffee is not readily available. Roasted grain… …   Wikipedia

  • Coffee milk — is a drink similar to chocolate milk; however, instead of chocolate syrup, coffee syrup is used. It is the official state drink of Rhode Island in the United States of America.[1] …   Wikipedia

  • Coffee production in Bolivia — Coffee plant in Yungas, Bolivia. Coffee production in Bolivia has had a long history in the country. Coffee is grown in regions of 800–2,300 metres (2,600–7,500 ft) above the sea level.[1] Hist …   Wikipedia

  • Coffee production in Haiti — Coffee has been a staple of the Caribbean nation of Haiti since its initial colonization by France in the 17th century. Alongside sugar and tobacco, it has long formed the backbone of Haiti s economy. Today, similar to many other Caribbean… …   Wikipedia

  • Coffee production in Nicaragua — Coffee farm in the highlands of Quilalí. Coffee production in Nicaragua has been an important part of its history and economy. It is one of the country s principal products. The areas most suitable for the cultivation of coffee have been Managua… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”