5 Laws That'll Help The Machine Espresso Industry > 자유게시판

How Does Machine Espresso Work?

Machine espresso makes use of precise pressure and mind-blowing filter technology to create the delicious coffee we enjoy. How exactly does it work?

To make an espresso, hot water is pushed under pressure through finely ground coffee. The process is similar to making drip coffee, but the major difference is in the pressure.

The Head of the Group

The name implies, the group head is the place you place your portafilter while making mini espresso machine. It distributes water into the portafilter and controls the pressure of the extraction. There are many different kinds of group head, each with their particular advantages and drawbacks. Some are designed for stability of temperature while others are built to handle pre-infusion. Others are made to control the lever. There are also some that come with a range of features, such as the E61, which is the most popular choice among baristas due to its capacity to offer multiple perks in a single package.

As you can see from the photo above, the group head is fitted with several notches. You can place your portafilter inside these notches, and then twist the head to lock it. A gasket made of rubber is placed inside the notches, which helps make a seal when you insert your portafilter. The notches allow for the precise placement of the portafilter. This is crucial for an even extraction.

In addition to allowing you effortlessly insert your portafilter the group head is responsible for maintaining a consistent temperature. This is achieved by cycling hot water around the portafilter, and through the brew-basket, ensuring the temperature is always right for extraction. It is crucial to keep in mind that even a tiny variation can mean the difference between a good and a excellent espresso.

The Pump

Unlike manual piston machines, that use a lever to pressurize water, the rotary espresso machines use motorized pumps to provide the nine atmospheric bars of pressure necessary for buy espresso makers extraction. The pressure is created by removing tap water from a reservoir and pumping it through a heat exchanger prior being pushed through the ground coffee inside the group head.

Pumps are generally less expensive than piston-driven models, and they tend to last longer, but both types of machines may be damaged by excessive use and inadequate cleaning. They also add mechanical complexity, which can result in the cost of even the most basic models.

Some espresso machines use steam pressure instead of a pump for brewing espresso. The drawback of this is that the same dual boiler espresso machine that produces steam also increases the temperature of water to the point of boiling and can result in over-extraction. They also have to constantly rebuild their pressure between cups. This takes energy and time.

Many espresso machines make use of the rotary or vibration pump. A vibration model utilizes a rotating disk to generate pressure, whereas a rotary model pushes hot water through the ground at a rapid speed. Both machines can make excellent espresso but rotary machines are quieter, more durable and less likely to break.

The Boiler

The boiler is the element that heats water to an optimal temperature to extract. The resulting steam reaches the portafilter containing the ground espresso coffee and is then funneled down into the cup. The steam generates enough pressure to push the grounds of the coffee through. This creates a layer crema on top. This is one of the main characteristics of a good espresso.

There are three kinds of espresso makers, which differ in the type of pump they use and the degree of heat that the espresso is. There are different ways that the brew may be controlled, as well as the dimensions of the cup the machine is capable of making.

The first espresso machines were steam-types. They employed only one boiler to make both steam and brew but the pressure they could produce was not very high end espresso machine (simply click the up coming site) - two bars of atmospheric pressure maximum. This resulted in the coffee tasting bitter and burnt. The modern espresso machine was invented by the Milanese makers Luigi Bezzerra & Desiderio Pavoni.

The most popular espresso maker is a semi-automatic device that has an electric pump. These are what people imagine when they imagine an espresso machine. If you have a semi-automatic machine you have to grind the beans and tamp them yourself but the pump provides regulated water flow and pressure. This is a great solution that combines human control with mechanised reliability.

The Filter

Typically, espresso machines use filters to separate the grounds of coffee as they move through the hot water. The filter is also an essential component of the machine's temp control, since it helps to prevent overheating.

It also aids in flavor, as a filter allows for a longer bloom time. This allows the beans to release their flavors, and allows for a better extraction.

However, it is important to remember that even a great filter can result in a poor cup of coffee as the quality of the beans and extraction is essential.

This is where the magic happens, and it's what makes espresso taste good. The grouphead (also known as the brewhead) is where you put the portafilter, the device used to place the coffee grounds into, when making espresso.

In the steam-driven espresso machine hot water is heated in an airtight container to produce steam, which then pushes the hot water through the grounds at high pressure. These kinds of machines are generally less expensive and simpler to maintain than pumps-driven models. However, they are not as efficient in their ability to produce the perfect brewing conditions as they only operate at 1-1.5 bars of pressure, while the perfect shot requires 9-10 bar.

In recent years, espresso machines powered by a compressed air pump have become increasingly popular. They utilize an air compressor to push hot water through the grounds, and are far more portable than electric steam-driven machines.