9 Things Your Parents Teach You About Machine Espresso > 자유게시판

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

How Does Machine commercial espresso machine Work?

Machine espresso makes use of precise pressure and mind-blowing filter technology to make the coffee we love. How 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 the pressure is the major difference.

The Group Head

The group head is the portafilter that you insert when brewing espresso. It is responsible for dispersing water into the portafilter before controlling the pressure that results from the extraction. There are many different types of group heads each with their own advantages and drawbacks. Some are designed for the stability of temperature while some are built to handle pre-infusion. Others are made to control the lever. There are even some that include a mix of features, such as the E61 that is the standard choice for many baristas due to its capacity to provide multiple benefits in a single package.

As you can see in the above photo the group head comes with several notches to place your portafilter and twist it by hand to secure it. A gasket made of rubber is positioned within the notches to make a seal when you insert your portafilter. The notches allow for precise placement of your portafilter. This is vital for a consistent extraction.

In addition to allowing you easily place your portafilter in, the group head is responsible for Machine espresso maintaining 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. This is crucial, since even a few degrees can make the difference between good and great espresso.

The Pump

The motorized pumps used in espresso coffee machine with milk frother machines that rotate provide the nine atmospheric bar pressure required for espresso extraction. This is different from manually operated piston machines that employ a lever. The pressure is created by pumping water through a heat exchanger and then through the ground coffee machines espresso.

Pumps tend to be less expensive and last for longer than piston-driven machines. However, both kinds of machines can degrade because of frequent use and inadequate cleaning. Pumps are also more complex mechanically, and can add to the price of even the most basic models.

Certain mini espresso maker machines utilize steam pressure instead of a pump for brewing espresso. This can cause over-extraction because the boiler that makes steam also heats the water to boil. The machines must also continually rebuild their pressure between cups. This requires energy and time.

Many espresso machines employ the rotary or vibration pump, which is a vibration model that uses a vibrating disc to create pressure and rotating models that push hot water through the grounds under high speed. Both types of machines can produce an excellent espresso, but the rotary pumps are quieter, and more durable than vibration pumps.

The Boiler

The boiler is what will heat the water to the right temperature to extract. The steam produced will eventually reach the portafilter, which contains the espresso coffee grounds. It is then funneled into the cup. During this process the steam generates enough pressure to push the grounds of the coffee through. This results in a crema on top of the espresso. This is one of the main characteristics of a great espresso.

There are three different types of espresso machines, each having a different type of pump and the temperature of the brew. There are various ways to control the brew and the size of cup that can be made by the machine.

The earliest espresso machines were steam type. They utilized one boiler to make both steam and brew but the pressure they could generate was low - only two bars of atmospheric pressure maximum. The coffee tasted bitter and burned. The modern espresso machine was invented by the Milanese producers Luigi Bezzerra & Desiderio Pavoni.

The most commonly used espresso coffee machine uk machine is a semiautomatic model with an electric pump. When people think of espresso machines, they picture these machines. If you have a semi-automatic machine you grind the beans and then tamp them by hand. However, the pump regulates the flow of water and pressure. This is a great solution that combines human control with mechanised consistency.

The Filter

Espresso machines typically have filters that separate the grounds of coffee from hot water. The filter is also an essential element of the machine's temperature control, since it stops overheating.

A filter also improves flavor because it allows for a longer flowering phase. This helps the beans release their nuances and gives the chance for better extraction.

However, it is important to keep in mind that even a great filter could result in a bad cup of coffee, because the quality of the beans and extraction is essential.

It's here that the magic takes place. This is what makes espresso taste so good. The grouphead (also called the brewhead) is where you put the portafilter, which is the thingy that you use to put the grounds of coffee into when making espresso.

In a steam-driven espresso machine, hot water is heated in an airtight tank to create steam. Steam is then pushed through the grounds at high pressure. These machines are less expensive and easier for the owner to maintain than pumps-driven models. They are however limited for creating the ideal brewing conditions as they only operate with 1-1.5 bar of pressure. The ideal shot requires 9-10 bars.

In recent years, compressed air pump-driven espresso machines have been gaining popularity. They make use of an air compressor to force hot water through the ground and are more mobile than steam-driven electric espresso machines.