Classification of coffee equipment-classification and usage of coffee machines-what are the types of coffee machines

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In fact, any epoch-making invention will not be invented like that all of a sudden. So is the espresso machine, which has evolved in several different stages before today, which is almost a completed form. Today, Elephant ear will first introduce you to the history and types of Italian coffee machines!

In 1885, the Italian Angelo Moriondo designed the basic prototype of the espresso machine:

Of course, it can not be said to be born out of thin air, before this, countless coffee extraction equipment has been designed and invented. Some put forward concepts similar to mocha pots, others are similar to today's tea makers, and the concepts most valued by the espresso system may be steam and pressure.

Inventors at that time believed that steam was important for coffee extraction. Some people think that it is necessary to wet the coffee powder with steam before extraction; it is more generally believed that after hot water extraction, steam can extract the last drop of coffee essence. On the other hand, perhaps because steam can provide extra pressure on the boiler, slightly increase the water pressure of the extraction, can increase the speed of extraction.

Perhaps it was between the first and second industrial revolutions, when people had a passion and fascination with machinery, steam and efficiency. From our point of view today, the coffee of this period may be too exquisite to swallow.

Then, in 1901, Luigi Bezzera created the brewing handle.

Since then, the commercial value of commercial coffee machines has increased greatly. You can make one cup of coffee at a time in a more efficient way without any other wear and tear! This can be said to be an epoch-making invention at that time! Although the basic model of the built-in is almost exactly the same as the prototype of the Italian machine designed by Angelo Moriondo, and coffee is extracted by hot water and steam, the basic appearance features of the espresso machine as we know it are already in place by this time: brewing handles, pressure gauges, and steam for heating milk.

For nearly 50 years, until the birth of the Gaggia piston lever spring coffee machine in 1948, the espresso machine quietly evolved in an invisible place. Add pump, rotary piston to increase extraction pressure, add electronic heating equipment, improve boiler efficiency. Wait. Then, the piston lever spring coffee machine changed everything: ── Creama, the most important feature of Espresso, finally appeared!

Spring piston type Italian coffee mechanism

With the extra pressure provided by springs and pistons, the extraction water pressure of the espresso machine finally broke through the nine atmospheric pressure. Because the hot water is pressurized directly on the brewing head, the pressure in the boiler can be decoupled from the water pressure during brewing, and we can finally extract coffee with lower temperature and higher pressure! When the shining Creama flowed out of the machine designed by Gaggia, we can almost imagine the expression on his face, full of joy and surprise.

Application of heat exchanger

After finally being able to extract coffee under high pressure, the next question facing the espresso machine is how to supply high-quality coffee steadily and in large quantities. How to master and manipulate all the extraction variables? Among them, the greatest impact, but also the most difficulties to overcome is the extraction water temperature.

Since then to modern times, the coffee machine has developed double-boiler and multi-boiler models, with the same emphasis on the rapid and stable supply of large amounts of coffee. At this point, almost all the factors have been controlled, and the development of Italian coffee machine has reached maturity.

Model and construction of modern Italian coffee machine

Single boiler

The only single-boiler machine left may be a spring-piston coffee machine (probably not easy to buy). The biggest disadvantage of single boiler is that the water temperature is relatively unstable. When the hot water reaches the boiling head, it will cool down first, and if it comes out of the cup continuously, it will also cause the water temperature to drop.

In order to get a stable extraction, it is necessary to spend more time on drainage, warm boiling head, and then extract when the boiler water temperature and cooking head temperature are stable.

In particular, it should be noted that because it is a single boiler, if the hot water and steam in the boiler are cooled due to the continuous use of tea or steam, it will affect the water temperature of coffee extraction. Therefore, when continuous use of boiler hot water, it is necessary to wait for a period of time to reheat the boiler, and then extract coffee.

Double boilers and multiple boilers

In order to make the water temperature of coffee extraction more stable, the double boiler model is one boiler for extracting hot water for coffee and one boiler for steam and tea. On the other hand, multi-boiler machines have their own independent boilers for each coffee brewing head. Regardless of whether it is a double-boiler or multi-boiler model, because each boiler has an independent heater, the water temperature will be quite stable. The additional benefit of multiple boilers is that different boiling heads can set different water temperatures, or if each head is used in turn, the extraction temperature can be more stable.

No matter what kind of coffee machine you are using, you should know the tools you have and your understanding of coffee. This is the most important thing!

fully automatic coffee machine

Automatic coffee machine, as its name implies, is a kind of automatic coffee brewing machine that does not need to be operated by yourself. It is your best choice for those who like to drink coffee but are a little lazy. It can complete grinding, filling coffee and making coffee. It is equivalent to opening your own shop at home. However, with the development of the coffee machine market, the so-called "automatic coffee machine" is no longer limited to grinding, filling powder, pressing powder, filtering, cleaning one-click coffee machine, and it has developed many new functions according to the needs of users, such as grinding bean thickness adjustment, ESPRESSO and CAPPUCINNO coffee.

Automatic coffee machine structure is more complex, but convenient, fast, consistent quality, high efficiency, and a wide variety, but need good maintenance, maintenance costs are higher.

In addition, the current popular coffee charter and capsule coffee machine, also known as fully automatic coffee machine. However, the difference between these two coffee machines and traditional coffee machines is that the raw materials used are coffee bags and capsules such as coffee semi-finished products rather than coffee beans.

semi-automatic coffee machine

Semi-automatic coffee machine, is relative to the automatic coffee machine, it is a professional coffee machine. Because the semi-automatic coffee machine can not grind beans, can only use coffee powder, need the operator to fill the powder and press the powder, so the coffee maker's skill requirements are many, like to explore and specialize in research you will definitely like it.

Semi-automatic coffee machine is mainly produced in Italy, its structure is simple, easy to maintain, according to the correct method of use can produce high-quality Italian coffee.

Classic drip coffee maker

Drip coffee machines are a classic drip filter. Call it the lover of the coffee machine. Drip coffee machine also works on a simpler principle, it contains a funnel, used to pad filter paper and coffee powder, as well as filtering coffee device. However, to use this drip coffee machine, you need to buy a lot of filter paper.

High pressure steam coffee machine

The high-pressure steam coffee machine is a combination of pump pressure and steam. Through the pressure principle, when brewing coffee, the pressure of water is greater than one atmosphere, quickly extract the essence of coffee, and the brewed coffee will be more fragrant.

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