A Look Into The Future What's The Machine Espresso Industry Look Like In 10 Years? > 자유게시판

How Does Machine Espresso Work?

The machine espresso uses precise pressure, as well as a filtering technology that is amazing to make the coffee you love. How exactly does it work?

In order to make espresso, hot water is pushed under pressure through finely ground coffee. The process is similar to making drip coffee, however the main difference lies in the pressure.

The Head of the Group

The group head is the portafilter you place in the espresso maker when making it. It disperses the water into the portafilter, and regulates the pressure of extraction. There are a variety of group heads each with distinct advantages and disadvantages. Some are designed to provide stability of temperature while others are specifically designed to handle pre-infusion. Others are built to control the lever. There are also some that include a mix of features, like the E61 one, which is the most popular choice among baristas due to its capacity to provide multiple benefits in a single package.

As you can see in the picture above the group head is fitted with several notches. The portafilter is placed in these notches and then twist the head to secure it. There is also a gasket of rubber which is located inside the notches and helps create an airtight seal after inserting your portafilter into the machine. The notches allow for precise placement of your portafilter. This is essential for a consistent extraction.

The group head does not just allow you to put in your portafilter easily, but it also maintains the same temperature. This is achieved by cycling hot water around the portafilter and through the brew-basket to ensure that the temperature is always at the right level to extract the coffee. This is crucial, since even a few degrees can make the difference between good and great retro espresso maker.

The Pump

In contrast to manual piston machines which rely on a lever that pressurize water, rotating espresso machines rely upon motorized pumps that provide the nine atmospheric bars of pressure that are required to extract espresso. The pressure is built by pumping water through a heat-exchanger and then through the ground coffee.

Pumps are generally less expensive than piston-driven machines, and they tend to last longer, although both types of machines could get damaged through overuse and lack of cleaning. They also increase the complexity of mechanical systems that can lead to an expensive price for even the most basic models.

Some espresso machines can eliminate the pump completely and use steam pressure to brew espresso. This could lead to over-extraction since the boiler that produces steam also heats the water until it comes to a boil. These machines also have to continuously rebuild their pressure between cups. This requires energy and time.

A majority of espresso machines utilize the rotary or vibration pump. A vibration model utilizes the vibrating disk to create pressure, while a rotary model pushes hot water through the ground at a fast speed. Both machines can make excellent espresso, however rotary machines are quieter, more durable and less likely to break.

The Boiler

The boiler is what is used to heat the water to the right temperature to extract. The steam created will eventually reach the portafilter, which is the container that holds the espresso coffee grounds. The steam is then channeled into the cup. During this process the steam creates enough pressure to push the grounds of coffee through. This creates a crema on top of the espresso. This is one of the hallmarks of a great espresso.

There are three kinds of espresso makers, which differ in the type of pump they use and how hot the brew is. There are many ways to control the brew as well as the size of cup that can be produced by the machine.

The first espresso machines were steam-type. The first espresso machines were steam types. This resulted in the coffee tasting burnt and bitter. The modern espresso machines home machine was created by the Milanese manufacturers Luigi Bezzerra & Desiderio Pavoni.

The most well-known buy espresso machines (More Help) machine is a semiautomatic with an electric pump. This is what people envision when they think of an espresso maker. Semi-automatic machines require you to grind and tamp the beans by yourself The pump, however, regulates the water flow and pressure. This is an excellent solution that combines human control with mechanised reliability.

The Filter

Espresso machines usually have filters that separate the grounds of the coffee from hot water. The filter is also an important component of the temperature control system since it helps prevent the machine from overheating.

It also enhances flavor, since a filter can allow for a longer bloom phase. This helps the beans release their nuances and gives the chance for better extraction.

It is important to remember that even the finest filter can produce a bad cup of coffee. The quality of the beans and the extraction process, remain vital.

This is where the magic happens, and it's what makes an espresso really taste good. The grouphead, often referred to as the brew head, is where the portafilter (the thing you put the ground coffee in) sits when you're making espresso.

Steam-driven espresso machines make use of hot water that is heated in an airtight vessel to create steam. The steam then pushes hot water through grounds of the coffee under pressure. These machines are less expensive and are easier for the user to maintain than pumps-driven models. However, they are limited in their capacity to create 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, compressed-air-pump-driven espresso machines have become more popular. They utilize an air compressor to force hot water through the ground and are more mobile than electric steam-driven retro espresso machine machines.