Company Logo

• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

How Does Machine Espresso Work?

Machine espresso makes use of precise pressure and amazing filter technology to make the coffee we love. What exactly does it work?

In order to make espresso, hot water is forced under high pressure through finely ground coffee. The process is similar to making drip coffee. However it is the pressure that makes the main difference.

The Head of the Group

The group head is the portafilter you put in when making espresso. It disperses water in the portafilter, and then regulates the pressure during the extraction. There are many different types of group heads each with their own advantages and drawbacks. Some are designed to provide stability of temperature while others are built to handle pre-infusion. Some are designed to control the lever. Some come with a combination of both, like the E61. This is a preferred choice for baristas since it provides multiple advantages in a single package.

As you can see in the above photo The group head features numerous notches that you can place your portafilter before twisting it with your hands to secure it. There is also a rubber gasket that resides inside the notches to help create an airtight seal after inserting your portafilter into the machine. The notches on the head permit an exact placement of the portafilter, which is crucial for an efficient extraction.

In addition to allowing you to easily insert your portafilter, the group head is also responsible to maintain an even temperature. It does this by circulating hot water through the brew basket and around the portafilter, ensuring that it is always at the correct temperature for extraction. It is important to remember that even a tiny differences can make the distinction between a good and a excellent italian espresso machines.

The Pump

The motorized pumps used in espresso machines that rotate provide the nine atmospheric bar pressure required for espresso extraction. This is different from manual piston machines that rely on a lever. This pressure is built up by pumping water through a heat-exchanger and then through the ground coffee.

Pumps tend to be more affordable and last longer than piston-driven machines. However, both types of machines can degrade due to excessive use and inadequate cleaning. They also add mechanical complexity that can lead to costly prices for even the simplest models.

Certain espresso machines eliminate the pump entirely and employ steam pressure to create espresso. The downside is that the boiler that produces steam also increases the temperature of water to boiling and can result in over-extraction. Additionally the machines often have to rebuild their pressure between cups, which takes time and energy.

A large majority of espresso machines employ an rotary or a vibration pump. A vibration model uses a vibrating disk to generate pressure, Espressomachines; Madebyai.Io, whereas the rotating model pushes hot water through the ground at a rapid speed. Both machines produce great espresso, but rotary machines are quieter, more durable and less likely to break down.

The Boiler

The boiler is used to heat the water to the ideal temperature for extraction. The resulting steam is then transferred to the portafilter containing the ground espresso and gets funnelled down into the cup. The steam is able to create enough pressure to push the coffee grounds through. This results in a whipped-up the top of the espresso. This is one of the main characteristics of a great espresso.

There are three types of espresso makers. They differ in the kind of pump they use and the degree of heat that the brew is. There are a variety of ways to control the amount of brew, as well as the size of cup that can be produced by the machine.

The first espresso machines were steam types. They used one boiler to make steam and brew, however the pressure they were able to create was minimal - two bars of atmospheric pressure maximum. This resulted in the coffee tasting burnt and bitter. This is the reason why Milanese producers Luigi Bezzerra and Desiderio Pavoni invented the modern espresso machine.

The most well-known espresso maker is a semiautomatic machine with an electric pump. These are the images people have when they think of an espresso machine with grinder machine. With a semi-automatic espresso machine, you grind the beans and tamp them by hand. The pump regulates the flow of water and pressure. This is a perfect combination of human control and mechanised accuracy.

The Filter

espresso machine sale machines usually have a filter that separates the grounds of coffee from hot water. The filter is also a vital element of the machine's temperature control, since it helps to prevent overheating.

A filter can also help with flavor, as it permits a longer flowering phase. This helps the beans release their flavor and gives an opportunity for a better extraction.

It is important to remember that even the best filter can result in a bad cup of coffee. The quality of the beans, and the extraction process, are still very important.

This is where the magic happens, it's what makes espresso machine with milk frother taste great. The grouphead (also called the brewhead) is where you put the portafilter, the thingy that you use to put the coffee grounds into, while making espresso.

Steam-driven espresso machines make use of hot water that is heated inside an airtight container to create steam. The steam then pushes hot water into the grounds of coffee at high pressure. These types of machines are generally less expensive and simpler to maintain than pump-driven models. However, they are limited in their ability to produce the ideal conditions for brewing because they operate at 1-1.5 bars of pressure, while the perfect shot requires 9-10 bars.

In recent years, espresso machines driven by compressed air-pump are becoming increasingly popular. They use an air compressor to force hot water into the grounds and are much more portable than steam-driven electric machines.