Hand blender
A hand-held blender , stick blender , blender or blender is an electrical device for use in domestic and commercial use. A powerful electric motor with a high speed (approx. 10,000 to 12,000 / min, sometimes up to 20,000 / min) is housed in the handle of the device . This motor drives a rotating knife at the bottom of the device.
Blending sticks are suitable for blending fruit and vegetables, for mixing with liquids, for whipping egg white and dairy products and for chopping meat.
history
In 1950, the Swiss Roger Perrinjaquet applied for a patent for an “appareil ménager portatif” (portable kitchen appliance), which was used to describe the world's first hand blender. The company ESGE, founded in 1953 - named after the first letters of its founders Spingler and Gschwend ("Es" and "Ge") from Neuffen - acquired the patent in 1954 and in the following year launched the first hand blender under the name "ESGE magic wand of the housewife" German market, from the beginning of the 1960s the device was called "ESGE magic wand". In Switzerland the device was sold under the name "Bamix". Its name is derived from the French words battre et mixer (to beat and mix / mix). The product is still sold in a slightly different presentation and in several versions, depending on the country, under the name "ESGE Zauberstab" or "bamix". a. in Switzerland (in Mettlen, Bussnang municipality ) produced by ESGE AG, with 90 percent of the 400,000 hand blenders produced annually in Mettlen being exported.
variants
To make cleaning a hand blender easier, there are products with a removable blender foot. The bell on the mixing foot, in which the rotating knife is located, can be provided with side openings. Devices without openings are easier to clean and, according to the manufacturer, less splashes should occur. Simple devices only have one switching stage. However, in order to be able to produce the finest possible food pulp, many products have two to three stages.
The connected load of hand blenders for household use is between 50 and 600 watts. There are also wireless products with built-in batteries and chargers, including lithium-ion technology. Since it is an electrical device, the handle should only be cleaned with a damp sponge, a removable foot is usually dishwasher-safe.
Higher quality devices allow the use of additional parts. Some devices have different attachments with which the hand blender can be used for whipping cream, stirring dough, etc. Ä. Can be used. There is also an additional universal chopper for chopping herbs, onions, nuts, cheese, meat and the like. Ä. Or additional devices for grinding seeds or coffee beans. With some products, the motor can even be used as a vacuum pump for food preservation.
Hand blenders are also available as accessories (attachments) for electric hand mixers .
In chemical laboratories , a dispersing stirrer (IKA-Ultra-Turrax) is usually used for homogenization in sample preparation and for the production of emulsions, nanosuspensions or extracts . In such homogenizers efficient acting shear forces and cavitation swirkungen (u. A. Ultrasonic ) in a narrow gap between a rotor and a stator .
Web links
Individual evidence
- ↑ Bamix company history. Esge AG, accessed on July 30, 2017 .
- ↑ The «housewife's wand»: hand blender put to the test - info box "Who invented it?" , Kassensturz , September 25, 2019