Different Models Of Espresso Machine

A type of coffee maker that specializes only in producing the Italian coffee known as espresso, the espresso machine has become quite popular with many consumers. Various types of espresso machines can be categorized based on their drive mechanisms as the variations of these can actually change the taste of espresso itself.

The making of espresso is so sensitively delicate that the combinations of temperature, pressure and texture of the grind can really change the taste of that one cup. The espresso coffee machines are a big help in trying to maintain a consistency in regulating these three factors in order to be sure that the results will always be the same. Some espresso machines go as far as having an attachment steam wand in order to be able to produce latte or cappuccino in the process.

Some espresso machines are steam driven and the concept behind this is when the water is actually forced through the coffee filter with the use of steam pressure. Most of the very first espresso machines were steam models as piping already hot, steaming water through several pipes could serve more cups of coffee at one time. This type of design still survives as a combination drip coffee machine that is sold as a lower cost appliance.

Pistons are also a way to deliver the water using a hand lever, and this allows for an operator to pass the water through the coffee grinds by manual pulling of this lever. The long lever and mechanism adds pressure to the manner in which the water is passed, and this produces that distinct flavor. The designs vary from manual piston design, where the operator determines the pressure placed into the pulling of the lever, and the spring piston design where there is a spring to help the operator in terms of keeping the pressure consistent with every cup.

A motor to pump pressure is also used in order to achieve the necessary pressure level, and this is the concept behind the pump driven espresso machines. Some commercial establishments use this type of machine as it can be directly attached to a water source, whereas some home versions of the appliance have containers for water to be poured into the machine.

Another type of espresso coffee machine is the air pump driven version that uses compressed air to force hot water through. For this version, the hot water can be added from a separate source such as a kettle, and the compressed air can be released by a hand pump, pressurized cartridges, or an electric compressor. The air pump driven machines are a much smaller version than the electric compressor type, giving them the option of portability.

There are also more sophisticated machines that run on automation, as they basically do much of the process on their own using a combination of pumps, valves, grinders, and sensors to make things easier on the operator. Usually this removes the manual aspect of delivering the water through the grinds, making it much easier to produce more cups in even portions.

These automated machines have three different versions, and many establishments have an option which type they wish to use depending upon their needs. There is the semi automatic version that uses a fully automated pump that brings the hot water through the grinds, and then a three way valve helps to release the brew pressure. Then there is the automatic machine version that has an extra inflow meter attachment to the three way valve which fully controls the amount of water that passes through, thereby regulating the brewing time for each cup.

Super automatic model usually can produce a few cups, but not high volume, and are considered inferior quality for many seasoned baristas. However, they are popular because even the unskilled can operate them as they provide consistent cups of espresso coffee.

Ken Wright has written super automatic espresso machine reviews for the models that he owned or tried. He shares much information on coffee making in his espresso machine reviews website including guides to choose the best espresso machine and coffee grinder.

Shopping for an Espresso Machine? Here's a selection at affordable prices:

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Tags: beverage, business, cafe, coffee, coffee bean, Drinks, espresso machine, foods, health, home, kitchen, lifestyle, shopping

September 01 2010 12:19 pm | coffee

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