Understand what is Italian semi-automatic professional coffee machine | recommended by professional semi-automatic coffee machine

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Semi-automatic coffee machine, is a coffee shop town artifact, because only semi-automatic coffee machine produced coffee can have such a mellow aroma, rich taste conquered many coffee fans taste buds. Semi-automatic coffee machine is highly operational, very professional coffee tools, people without considerable experience are not able to make a cup of good coffee, although in the eyes of others to make a cup of coffee is so simple, but only experts can see the door.

semi-automatic coffee machine

Semi-automatic coffee machine is currently the most common coffee machine in the coffee machine market. It is also the first choice for professional Italian cafes. The semi-automatic coffee machine is equipped with a professional high-pressure water pump, which can exert 9 atmospheres of pressure on the coffee powder.

Espresso machines produce the high temperature and pressure water needed for espresso extraction. The core technology of Italian coffee machine lies in high pressure, hot water heating of exchanger, temperature maintenance, so that the extraction of coffee ingredients can be faster and more efficient, which is also the reason why Italian semi-automatic coffee machine has no substitute in commercial status.

This high pressure can completely extract the essence of coffee. There is also a professional large boiler, the current double-headed coffee machine boiler is generally about 11 liters, fully able to meet the continuous production of coffee and steam needs. What's more, some high-end semi-automatic coffee machines use dual boilers and multi-boiler systems.

The hot water for extraction and the steam for whipping milk are produced separately by two boilers, and the temperature is controlled by two systems, which is more suitable for high-quality coffee. Because the temperature of the hot water needed to produce enough steam to dry coffee is completely different.

Semi-automatic coffee machine can be divided into manual semi-automatic and electronic semi-automatic according to whether its internal control by the microcomputer, their basic functions are the same, the quality of coffee made is no different. But the electronic coffee machine has a lot of extra features. The main thing is that the computer can control the amount of coffee, which will not cause the problem of inconsistent cup amount when making coffee twice.

Some also have a display screen that can query related information, such as the number of cups to make coffee, automatic switching time, etc. Semi-automatic machines, whether electronically controlled or manually controlled, can be divided into single, double and multiple heads according to the size of the output. They are the same structure, but the boiler size, heating power, brewing head number is different.

Coffee machine recommended

1.Faema E61

Heat exchange principle: heating boiler water, cold water through the boiler coil is heated to extract coffee, boiler output milk steam.

Disadvantages: Because the heated water is still heated when it is not extracted, the water temperature in the coil is actually higher than the set temperature.(Experienced baristas will drain part of the water before extraction, and try not to use the hot water in the boiler, one is repeated heating is not healthy, and the other is that once the boiler enters the cold water due to insufficient water, the extraction water temperature may not be enough for a period of time); and because of structural reasons, it is difficult to stably control the extraction water temperature, and the optimal extraction water temperature required for coffee beans of different roasting degrees is different.

heat exchange structure

③ Double boiler, multi-boiler (and PID temperature control):

Double boiler refers to a coffee boiler with 1 steam boiler, multiple boilers are different brewing heads with independent coffee boilers, and most of the coffee machines with double (multiple) boilers will join PID temperature control system. In this way, it solves the problem that the water temperature of the primary and secondary boilers is uncontrollable, and of course the price is more expensive.

2.La Marzocco gs3

PID temperature control system:

PID full name Proportional integral derivative, literally translated as proportional integral derivative.

Traditional insulation is based on the temperature value as the trigger heating conditions, such as the temperature below 85℃ to start heating; there are also like the design of the mother boiler is simply through the air pressure to control the heating, which leads to heating delays, keep the temperature difference range is large (such as fluctuations between 88-95℃).

PID temperature control system measures not only real-time water temperature, but also calculates the rate of change of water temperature. When the set temperature is reached, the heating power will be changed in the form of pulses to maintain a relatively constant temperature (such as fluctuating between 93-93.8℃).

PS: The larger the boiler, the greater the relative constant temperature ability, and the stronger the continuous production ability. PID temperature control is practical and the price is ordinary, because the 600 yuan bonavita hand washing pot is also equipped with PID temperature control system.

Second, provide extraction espresso pressure pump, there are two main types: 1, vibration pump;2, rotary pump.

1, vibration pump: the principle is similar to the pump, many household machines marked "maximum 15bar or 20bar pressure" is for this reason.

Disadvantages: loud noise, unstable pressure.

Rotary pump: The principle is that the impeller rotates and the pressure is stable, and most commercial coffee machines on the market use this.

ps: Some high-end variable pressure coffee machines on the market still use rotary pumps, but the extraction process will change the extraction pressure directionally, instead of the conventional 9bar, which is completely different from the unstable pressure of the vibration pump.

3. Additional functions:

1. Set water yield;2. Set pre-soaking time;3. Display extraction time;4. Pressure swing extraction;5. Brewing ratio technology; etc.

1, set the water output: you can set the automatic gear extraction water (ml), if you keep the same amount of grinding powder each time, equivalent to keeping the water powder ratio (volume/weight) of each cup of espresso relatively, practical, for the production efficiency quality is greatly improved, the technical price is ordinary (common in the digital newer models).

2, set the pre-soak time: pre-soak refers to the extraction of coffee powder wet with a lower pressure (1~3bar) less water, coffee powder water expansion, extraction space is filled with powder, reduce the channel effect brought about by the extraction of uneven; There is also a benefit is similar to hand-brewed coffee, release carbon dioxide, improve extraction efficiency, reduce coffee beans too fresh brought about by insufficient extraction. Mid-utility, technical price is average (still common in newer models that are digital).

3, display extraction time: practical, very useful for coffee quality control, technical price is very low (still common in digital newer models).

Astoria plus 4 you

4, pressure swing extraction: extraction break through the traditional 9bar extraction, change the extraction pressure. For example, synesso hydra's "extraction pressure curve", for example, first extract with 2 bar for a few seconds, then extract with 5bar, 9bar, and finally extract with 5bar, can do longo one minute still not extract. High technology content, high technology price.

synesso

5, brewing ratio technology: different from the set amount of water, brewing ratio technology, coffee machine internal scale can weigh the weight of coffee powder, external scale can also weigh the weight of espresso, keep the powder water ratio consistent (weight/weight). Practicality, high technical content, high technical price.

6, other such as Kees speedster brewing head screw-free design, Modbar space-saving fashion appearance, Slayer 0-12bar transformer, Sanremo opera Bluetooth mobile phone control, etc., are some high-end expensive brand machines have specific functions, practicality varies from person to person, but the price, um, only local tyrants can enjoy it.

Modbar

Summary:

① Boiler and rotary pump is the professional and non-professional division of coffee machine

② The size of the boiler and the size of the boiler determine the basic grade of the coffee machine.

③ Other functions bring more benefits to coffee production efficiency and quality improvement.

1. Huijia KD-210s Reference Price: 3500 Yuan

Features: Double heating block, double vibration pump (simultaneous extraction and milk beating), standard 58mm powder bowl, simple pre-soaking

2. Rocket R58 rocket head reference price: 22500 yuan

Features: double boiler, rotary pump, PID temperature control, boiler size: steam 1.7L, coffee 0.6L, water tank can be connected to water pipe, 3-stage pressure swing extraction

3, ECM synchronika reference price: 22000 yuan

Features: double boiler, rotary pump, PID temperature control, boiler size: steam 2L, coffee 0.75L, display extraction time.

4. Casadio single head reference price: 12000

Features: mother and son boiler, boiler size: 5.9L, external water pipe,(ps: this type of 3-hole steam head, 4-hole best use, 2-hole also OK, 3-hole uncomfortable, 5-hole can be used are great gods)

Next up are commercial models with sunrise cups up to 200:

5. La Marzocco gs3 MP Reference Price: 48000 yuan

Features: double boiler, rotary pump, boiler size: 3.5L steam, 1.5L coffee, 3-stage extraction pressure transformer, highly digital display (all digital functions), display pressed powder pressure during extraction (general coffee machine is pump pressure), unique progressive preheating system (steam boiler hot water preheating output to coffee boiler, improve rewarming efficiency)

Ps: really ang (gui)

6. Nuova Appia double head reference price: 18000

Characteristics: master boiler, boiler size: 11L, external water pipe.

(ps: durable operation is affordable, with the same price, such as Kimberly, the performance-to-price ratio is similar, they are all son-mother boilers, there is nothing to struggle with. There are 340,000 coffee makers, but I think the performance-to-price ratio is really low, so I won't list it. )

Next, it is suitable for cafes with more than 200 sunrise cups (all external water pipes, rotary pumps):

7. Astoria plus 4 you double head reference price: 53000 yuan

Features: three boilers, boiler size: steam 8L, coffee 1.2L × 2, highly digital

8. Nuova T3 double head (former WBC competition model) reference price: 58000 yuan

Features: three boilers, steam 14L, coffee 0.7x2, highly digital, T3 steam boiler, coffee boiler, brewing head three heavy PID temperature control.

9. Kees speedster speedster reference price: 75000 yuan

Features: the function is similar to la marzocco gs3, the boiler is larger, steam 3.5L, coffee 2.1L, special is the metal demon shell.

10. Synesso transformer curve series

Reference price: 100000 + per head

Characteristics: maximum selling point, preservation of variable pressure extraction curve, other will not repeat.

11. Modbar reference price: varies from market to market

Features: with variable pressure coffee machine function, and on this basis to save a lot of space, the sale is a bright spot, the price is expensive.

Have you learned why the espresso machine is professional? Because as the most important tool in a coffee shop, there is no productivity without a coffee machine. after all, the coffee machine provides stable production conditions, and it is respectful to customers that they can quickly make a cup of coffee after they have ordered. Of course, the price of such a professional coffee machine is also high and low, which depends on how to choose.

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